WorldWideScience

Sample records for cluster-based universal control

  1. A cluster-based randomized controlled trial promoting community participation in arsenic mitigation efforts in Bangladesh

    OpenAIRE

    George, Christine Marie; van Geen, Alexander; Slavkovich, Vesna; Singha, Ashit; Levy, Diane; Islam, Tariqul; Ahmed, Kazi Matin; Moon-Howard, Joyce; Tarozzi, Alessandro; Liu, Xinhua; Factor-Litvak, Pam; Graziano, Joseph

    2012-01-01

    Abstract Objective To reduce arsenic (As) exposure, we evaluated the effectiveness of training community members to perform water arsenic (WAs) testing and provide As education compared to sending representatives from outside communities to conduct these tasks. Methods We conducted a cluster based randomized controlled trial of 20 villages in Singair, Bangladesh. Fifty eligible respondents were randomly selected in each village. In 10 villages, a community member provided As education and WAs...

  2. Cluster-based control of a separating flow over a smoothly contoured ramp

    Science.gov (United States)

    Kaiser, Eurika; Noack, Bernd R.; Spohn, Andreas; Cattafesta, Louis N.; Morzyński, Marek

    2017-12-01

    The ability to manipulate and control fluid flows is of great importance in many scientific and engineering applications. The proposed closed-loop control framework addresses a key issue of model-based control: The actuation effect often results from slow dynamics of strongly nonlinear interactions which the flow reveals at timescales much longer than the prediction horizon of any model. Hence, we employ a probabilistic approach based on a cluster-based discretization of the Liouville equation for the evolution of the probability distribution. The proposed methodology frames high-dimensional, nonlinear dynamics into low-dimensional, probabilistic, linear dynamics which considerably simplifies the optimal control problem while preserving nonlinear actuation mechanisms. The data-driven approach builds upon a state space discretization using a clustering algorithm which groups kinematically similar flow states into a low number of clusters. The temporal evolution of the probability distribution on this set of clusters is then described by a control-dependent Markov model. This Markov model can be used as predictor for the ergodic probability distribution for a particular control law. This probability distribution approximates the long-term behavior of the original system on which basis the optimal control law is determined. We examine how the approach can be used to improve the open-loop actuation in a separating flow dominated by Kelvin-Helmholtz shedding. For this purpose, the feature space, in which the model is learned, and the admissible control inputs are tailored to strongly oscillatory flows.

  3. Cluster-based adaptive power control protocol using Hidden Markov Model for Wireless Sensor Networks

    Science.gov (United States)

    Vinutha, C. B.; Nalini, N.; Nagaraja, M.

    2017-06-01

    This paper presents strategies for an efficient and dynamic transmission power control technique, in order to reduce packet drop and hence energy consumption of power-hungry sensor nodes operated in highly non-linear channel conditions of Wireless Sensor Networks. Besides, we also focus to prolong network lifetime and scalability by designing cluster-based network structure. Specifically we consider weight-based clustering approach wherein, minimum significant node is chosen as Cluster Head (CH) which is computed stemmed from the factors distance, remaining residual battery power and received signal strength (RSS). Further, transmission power control schemes to fit into dynamic channel conditions are meticulously implemented using Hidden Markov Model (HMM) where probability transition matrix is formulated based on the observed RSS measurements. Typically, CH estimates initial transmission power of its cluster members (CMs) from RSS using HMM and broadcast this value to its CMs for initialising their power value. Further, if CH finds that there are variations in link quality and RSS of the CMs, it again re-computes and optimises the transmission power level of the nodes using HMM to avoid packet loss due noise interference. We have demonstrated our simulation results to prove that our technique efficiently controls the power levels of sensing nodes to save significant quantity of energy for different sized network.

  4. A cluster-based randomized controlled trial promoting community participation in arsenic mitigation efforts in Bangladesh.

    Science.gov (United States)

    George, Christine Marie; van Geen, Alexander; Slavkovich, Vesna; Singha, Ashit; Levy, Diane; Islam, Tariqul; Ahmed, Kazi Matin; Moon-Howard, Joyce; Tarozzi, Alessandro; Liu, Xinhua; Factor-Litvak, Pam; Graziano, Joseph

    2012-06-19

    To reduce arsenic (As) exposure, we evaluated the effectiveness of training community members to perform water arsenic (WAs) testing and provide As education compared to sending representatives from outside communities to conduct these tasks. We conducted a cluster based randomized controlled trial of 20 villages in Singair, Bangladesh. Fifty eligible respondents were randomly selected in each village. In 10 villages, a community member provided As education and WAs testing. In a second set of 10 villages an outside representative performed these tasks. Overall, 53% of respondents using As contaminated wells, relative to the Bangladesh As standard of 50 μg/L, at baseline switched after receiving the intervention. Further, when there was less than 60% arsenic contaminated wells in a village, the classification used by the Bangladeshi and UNICEF, 74% of study households in the community tester villages, and 72% of households in the outside tester villages reported switching to an As safe drinking water source. Switching was more common in the outside-tester (63%) versus community-tester villages (44%). However, after adjusting for the availability of arsenic safe drinking water sources, well switching did not differ significantly by type of As tester (Odds ratio = 0.86[95% confidence interval 0.42-1.77). At follow-up, among those using As contaminated wells who switched to safe wells, average urinary As concentrations significantly decreased. The overall intervention was effective in reducing As exposure provided there were As-safe drinking water sources available. However, there was not a significant difference observed in the ability of the community and outside testers to encourage study households to use As-safe water sources. The findings of this study suggest that As education and WAs testing programs provided by As testers, irrespective of their residence, could be used as an effective, low cost approach to reduce As exposure in many As-affected areas of

  5. A cluster-based randomized controlled trial promoting community participation in arsenic mitigation efforts in Bangladesh

    Directory of Open Access Journals (Sweden)

    George Christine

    2012-06-01

    Full Text Available Abstract Objective To reduce arsenic (As exposure, we evaluated the effectiveness of training community members to perform water arsenic (WAs testing and provide As education compared to sending representatives from outside communities to conduct these tasks. Methods We conducted a cluster based randomized controlled trial of 20 villages in Singair, Bangladesh. Fifty eligible respondents were randomly selected in each village. In 10 villages, a community member provided As education and WAs testing. In a second set of 10 villages an outside representative performed these tasks. Results Overall, 53% of respondents using As contaminated wells, relative to the Bangladesh As standard of 50 μg/L, at baseline switched after receiving the intervention. Further, when there was less than 60% arsenic contaminated wells in a village, the classification used by the Bangladeshi and UNICEF, 74% of study households in the community tester villages, and 72% of households in the outside tester villages reported switching to an As safe drinking water source . Switching was more common in the outside-tester (63% versus community-tester villages (44%. However, after adjusting for the availability of arsenic safe drinking water sources, well switching did not differ significantly by type of As tester (Odds ratio =0.86[95% confidence interval 0.42-1.77. At follow-up, among those using As contaminated wells who switched to safe wells, average urinary As concentrations significantly decreased. Conclusion The overall intervention was effective in reducing As exposure provided there were As-safe drinking water sources available. However, there was not a significant difference observed in the ability of the community and outside testers to encourage study households to use As-safe water sources. The findings of this study suggest that As education and WAs testing programs provided by As testers, irrespective of their residence, could be used as an effective, low cost

  6. Performance Analysis of Quality-of-Service Controls in a Cell-Cluster-Based Wireless ATM Network

    Energy Technology Data Exchange (ETDEWEB)

    Cho, Young Jong [Ajou University, Suwon (Korea, Republic of)

    1997-04-01

    In this paper, an efficient cell-cluster-based call control scheme with guaranteed quality-of-service(QoS) provision ing is presented for next generation wireless ATM networks and its performance is mathematically analyzed using the open queuing network. With the cell-cluster-based call control, at the time a mobile connection is admitted to the network, a virtual cell is constructed by choosing a group of neighboring base stations to which the call may probabilistic ally hand over and by assigning to the call a collection of virtual paths between the base stations. Within a micro cell/pico cell environment, it is seen that the cell-cluster-based call control can support effectively a very high rate of handovers, provides very high system capacity, and guarantees a high degree of frequency reuse over the same geographical region without requiring the intervention of the network call control processor each time a handover occurs. But since mobiles, once admitted, are free to roam within the virtual cell, congestion condition occurs in which the number of calls to be handled by one base station exceeds the cell sites` capacity of radio channel and consequently a predefined QoS provision cannot be guaranteed. So, there must be a call admission control function to limit the number of calls existing in a cell-cluster such that required QoS objectives are met. As call acceptance criteria for constant-bit-rate or realtime variable-bit-rate ATM connections, we define four mobile QoS metrics: new-call blocking probability, wireless channel utilization efficiency, congestion probability and normalized average congestion duration. In addition, for QoS provision ing to available-bit-rate, unspecified-bit-rate or non-realtime variable-bit-rate connections, we further define another QoS metric, the minimum threshold breaking probability. By using the open network queuing model, we derive closed form expressions for the five QoS metrics defined above and show that they can be

  7. CoCMA: Energy-Efficient Coverage Control in Cluster-Based Wireless Sensor Networks Using a Memetic Algorithm

    Directory of Open Access Journals (Sweden)

    Yung-Chung Wang

    2009-06-01

    Full Text Available Deployment of wireless sensor networks (WSNs has drawn much attention in recent years. Given the limited energy for sensor nodes, it is critical to implement WSNs with energy efficiency designs. Sensing coverage in networks, on the other hand, may degrade gradually over time after WSNs are activated. For mission-critical applications, therefore, energy-efficient coverage control should be taken into consideration to support the quality of service (QoS of WSNs. Usually, coverage-controlling strategies present some challenging problems: (1 resolving the conflicts while determining which nodes should be turned off to conserve energy; (2 designing an optimal wake-up scheme that avoids awakening more nodes than necessary. In this paper, we implement an energy-efficient coverage control in cluster-based WSNs using a Memetic Algorithm (MA-based approach, entitled CoCMA, to resolve the challenging problems. The CoCMA contains two optimization strategies: a MA-based schedule for sensor nodes and a wake-up scheme, which are responsible to prolong the network lifetime while maintaining coverage preservation. The MA-based schedule is applied to a given WSN to avoid unnecessary energy consumption caused by the redundant nodes. During the network operation, the wake-up scheme awakens sleeping sensor nodes to recover coverage hole caused by dead nodes. The performance evaluation of the proposed CoCMA was conducted on a cluster-based WSN (CWSN under either a random or a uniform deployment of sensor nodes. Simulation results show that the performance yielded by the combination of MA and wake-up scheme is better than that in some existing approaches. Furthermore, CoCMA is able to activate fewer sensor nodes to monitor the required sensing area.

  8. A Clustering Based Approach for Observability and Controllability Analysis for Optimal Placement of PMU

    Science.gov (United States)

    Murthy, Ch; MIEEE; Mohanta, D. K.; SMIEE; Meher, Mahendra

    2017-08-01

    Continuous monitoring and control of the power system is essential for its healthy operation. This can be achieved by making the system observable as well as controllable. Many efforts have been made by several researchers to make the system observable by placing the Phasor Measurement Units (PMUs) at the optimal locations. But so far the idea of controllability with PMUs is not considered. This paper contributes how to check whether the system is controllable or not, if not then how make it controllable using a clustering approach. IEEE 14 bus system is considered to illustrate the concept of controllability.

  9. A Cluster-Based Dual-Adaptive Topology Control Approach in Wireless Sensor Networks

    Science.gov (United States)

    Gui, Jinsong; Zhou, Kai; Xiong, Naixue

    2016-01-01

    Multi-Input Multi-Output (MIMO) can improve wireless network performance. Sensors are usually single-antenna devices due to the high hardware complexity and cost, so several sensors are used to form virtual MIMO array, which is a desirable approach to efficiently take advantage of MIMO gains. Also, in large Wireless Sensor Networks (WSNs), clustering can improve the network scalability, which is an effective topology control approach. The existing virtual MIMO-based clustering schemes do not either fully explore the benefits of MIMO or adaptively determine the clustering ranges. Also, clustering mechanism needs to be further improved to enhance the cluster structure life. In this paper, we propose an improved clustering scheme for virtual MIMO-based topology construction (ICV-MIMO), which can determine adaptively not only the inter-cluster transmission modes but also the clustering ranges. Through the rational division of cluster head function and the optimization of cluster head selection criteria and information exchange process, the ICV-MIMO scheme effectively reduces the network energy consumption and improves the lifetime of the cluster structure when compared with the existing typical virtual MIMO-based scheme. Moreover, the message overhead and time complexity are still in the same order of magnitude. PMID:27681731

  10. A Cluster-Based Dual-Adaptive Topology Control Approach in Wireless Sensor Networks

    Directory of Open Access Journals (Sweden)

    Jinsong Gui

    2016-09-01

    Full Text Available Multi-Input Multi-Output (MIMO can improve wireless network performance. Sensors are usually single-antenna devices due to the high hardware complexity and cost, so several sensors are used to form virtual MIMO array, which is a desirable approach to efficiently take advantage of MIMO gains. Also, in large Wireless Sensor Networks (WSNs, clustering can improve the network scalability, which is an effective topology control approach. The existing virtual MIMO-based clustering schemes do not either fully explore the benefits of MIMO or adaptively determine the clustering ranges. Also, clustering mechanism needs to be further improved to enhance the cluster structure life. In this paper, we propose an improved clustering scheme for virtual MIMO-based topology construction (ICV-MIMO, which can determine adaptively not only the inter-cluster transmission modes but also the clustering ranges. Through the rational division of cluster head function and the optimization of cluster head selection criteria and information exchange process, the ICV-MIMO scheme effectively reduces the network energy consumption and improves the lifetime of the cluster structure when compared with the existing typical virtual MIMO-based scheme. Moreover, the message overhead and time complexity are still in the same order of magnitude.

  11. A Cluster-Based Dual-Adaptive Topology Control Approach in Wireless Sensor Networks.

    Science.gov (United States)

    Gui, Jinsong; Zhou, Kai; Xiong, Naixue

    2016-09-25

    Multi-Input Multi-Output (MIMO) can improve wireless network performance. Sensors are usually single-antenna devices due to the high hardware complexity and cost, so several sensors are used to form virtual MIMO array, which is a desirable approach to efficiently take advantage of MIMO gains. Also, in large Wireless Sensor Networks (WSNs), clustering can improve the network scalability, which is an effective topology control approach. The existing virtual MIMO-based clustering schemes do not either fully explore the benefits of MIMO or adaptively determine the clustering ranges. Also, clustering mechanism needs to be further improved to enhance the cluster structure life. In this paper, we propose an improved clustering scheme for virtual MIMO-based topology construction (ICV-MIMO), which can determine adaptively not only the inter-cluster transmission modes but also the clustering ranges. Through the rational division of cluster head function and the optimization of cluster head selection criteria and information exchange process, the ICV-MIMO scheme effectively reduces the network energy consumption and improves the lifetime of the cluster structure when compared with the existing typical virtual MIMO-based scheme. Moreover, the message overhead and time complexity are still in the same order of magnitude.

  12. Control of single-phase islanded PV/battery streetlight cluster based on power-line signaling

    DEFF Research Database (Denmark)

    Quintana, Pablo; Garcia, Jorge; Guerrero, Josep M.

    2013-01-01

    . The whole system is explained ahead and finally, simulation results obtained in Simulink are presented to validate the proposed control strategy. On the other hand, the proposed loads are several electromagnetic ballast driving high pressure sodium (HPS) lamps. Although this kind of ballast...

  13. Man, Controller of the Universe

    Science.gov (United States)

    Olowin, R. P.

    2011-06-01

    The Man, Controller of the Universe painted by the renowned Mexican artist Diego Rivera in the gigantic mural of the Palace of Fine Arts in Mexico City is overlooked by a telescope. We acknowledge this instrument as the Plaskett Telescope at the Dominion Astrophysical Observatory in Victoria, Canada.

  14. Cluster Based Text Classification Model

    DEFF Research Database (Denmark)

    Nizamani, Sarwat; Memon, Nasrullah; Wiil, Uffe Kock

    2011-01-01

    We propose a cluster based classification model for suspicious email detection and other text classification tasks. The text classification tasks comprise many training examples that require a complex classification model. Using clusters for classification makes the model simpler and increases...... the accuracy at the same time. The test example is classified using simpler and smaller model. The training examples in a particular cluster share the common vocabulary. At the time of clustering, we do not take into account the labels of the training examples. After the clusters have been created......, the classifier is trained on each cluster having reduced dimensionality and less number of examples. The experimental results show that the proposed model outperforms the existing classification models for the task of suspicious email detection and topic categorization on the Reuters-21578 and 20 Newsgroups...

  15. A Cluster- Based Secure Active Network Environment

    Institute of Scientific and Technical Information of China (English)

    CHEN Xiao-lin; ZHOU Jing-yang; DAI Han; LU Sang-lu; CHEN Gui-hai

    2005-01-01

    We introduce a cluster-based secure active network environment (CSANE) which separates the processing of IP packets from that of active packets in active routers. In this environment, the active code authorized or trusted by privileged users is executed in the secure execution environment (EE) of the active router, while others are executed in the secure EE of the nodes in the distributed shared memory (DSM) cluster. With the supports of a multi-process Java virtual machine and KeyNote, untrusted active packets are controlled to securely consume resource. The DSM consistency management makes that active packets can be parallelly processed in the DSM cluster as if they were processed one by one in ANTS (Active Network Transport System). We demonstrate that CSANE has good security and scalability, but imposing little changes on traditional routers.

  16. Universal Programmable Logic Controller Software

    International Nuclear Information System (INIS)

    Mohd Arif Hamzah; Azhar Shamsudin; Fadil Ismail; Muhammad Nor Atan; Anwar Abdul Rahman

    2013-01-01

    Programmable Logic Controller (PLC) is an electronic hardware which is widely used in manufacturing or processing industries. It is also serve as the main control system hardware to run the production and manufacturing process. There are more than ten (10) well known company producing PLC hardware, with their own specialties, including the method of programming and language used. Malaysia Nuclear Agency have various plant and equipment, runs and control by PLC, such as Mintex Sinagama Plant, Alurtron Plant, and few laboratory equipment. Since all the equipment and plant are equipped with various brand or different manufacture of PLC, it creates difficulties to the supporting staff to master the control program. The same problems occur for new application of this hardware, since there no policies to purchase only one specific brand of PLC. (author)

  17. Cluster Based Hierarchical Routing Protocol for Wireless Sensor Network

    OpenAIRE

    Rashed, Md. Golam; Kabir, M. Hasnat; Rahim, Muhammad Sajjadur; Ullah, Shaikh Enayet

    2012-01-01

    The efficient use of energy source in a sensor node is most desirable criteria for prolong the life time of wireless sensor network. In this paper, we propose a two layer hierarchical routing protocol called Cluster Based Hierarchical Routing Protocol (CBHRP). We introduce a new concept called head-set, consists of one active cluster head and some other associate cluster heads within a cluster. The head-set members are responsible for control and management of the network. Results show that t...

  18. Classical Music Clustering Based on Acoustic Features

    OpenAIRE

    Wang, Xindi; Haque, Syed Arefinul

    2017-01-01

    In this paper we cluster 330 classical music pieces collected from MusicNet database based on their musical note sequence. We use shingling and chord trajectory matrices to create signature for each music piece and performed spectral clustering to find the clusters. Based on different resolution, the output clusters distinctively indicate composition from different classical music era and different composing style of the musicians.

  19. A Cluster Based Group Signature Mechanism For Secure Vanet Communication

    Directory of Open Access Journals (Sweden)

    Navjot Kaur

    2015-08-01

    Full Text Available Vehicular adhoc network is one of the recent area of research to administer safety to human lives controlling of messages and in disposal of messages to users and passengers. VANETs allows communication of moving vehicular nodes. Movement of nodes leads in changing network size and scenario. Whenever a new node joins the network there is a threat of malicious node attack. So we need an environment that is secure and trust worthy. Therefore a new cluster based secure technique is proposed where cluster head is responsible for providing communication between the vehicular nodes. Performance parameters used in this paper are message drop ratio packet delay ratio and verification time.

  20. Universal dephasing control during quantum computation

    International Nuclear Information System (INIS)

    Gordon, Goren; Kurizki, Gershon

    2007-01-01

    Dephasing is a ubiquitous phenomenon that leads to the loss of coherence in quantum systems and the corruption of quantum information. We present a universal dynamical control approach to combat dephasing during all stages of quantum computation, namely, storage and single- and two-qubit operators. We show that (a) tailoring multifrequency gate pulses to the dephasing dynamics can increase fidelity; (b) cross-dephasing, introduced by entanglement, can be eliminated by appropriate control fields; (c) counterintuitively and contrary to previous schemes, one can increase the gate duration, while simultaneously increasing the total gate fidelity

  1. Cosmological constraints with clustering-based redshifts

    Science.gov (United States)

    Kovetz, Ely D.; Raccanelli, Alvise; Rahman, Mubdi

    2017-07-01

    We demonstrate that observations lacking reliable redshift information, such as photometric and radio continuum surveys, can produce robust measurements of cosmological parameters when empowered by clustering-based redshift estimation. This method infers the redshift distribution based on the spatial clustering of sources, using cross-correlation with a reference data set with known redshifts. Applying this method to the existing Sloan Digital Sky Survey (SDSS) photometric galaxies, and projecting to future radio continuum surveys, we show that sources can be efficiently divided into several redshift bins, increasing their ability to constrain cosmological parameters. We forecast constraints on the dark-energy equation of state and on local non-Gaussianity parameters. We explore several pertinent issues, including the trade-off between including more sources and minimizing the overlap between bins, the shot-noise limitations on binning and the predicted performance of the method at high redshifts, and most importantly pay special attention to possible degeneracies with the galaxy bias. Remarkably, we find that once this technique is implemented, constraints on dynamical dark energy from the SDSS imaging catalogue can be competitive with, or better than, those from the spectroscopic BOSS survey and even future planned experiments. Further, constraints on primordial non-Gaussianity from future large-sky radio-continuum surveys can outperform those from the Planck cosmic microwave background experiment and rival those from future spectroscopic galaxy surveys. The application of this method thus holds tremendous promise for cosmology.

  2. Academic Quality Control in Nigerian Universities: Exploring Lecturers' Perceptions

    Science.gov (United States)

    Obiekezie, E. O.; Ejemot-Nwadiaro, R. I.; Essien, M. I.; Timothy, A. Essien

    2014-01-01

    The level of job performance, international comparability and competitiveness of Nigerian university graduates are burning issues. Consequently, the academic quality of Nigerian universities has come under severe criticism. Since university lecturers are key players in quality control in universities, this study explored their perceptions of…

  3. CBHRP: A Cluster Based Routing Protocol for Wireless Sensor Network

    OpenAIRE

    Rashed, M. G.; Kabir, M. Hasnat; Rahim, M. Sajjadur; Ullah, Sk. Enayet

    2012-01-01

    A new two layer hierarchical routing protocol called Cluster Based Hierarchical Routing Protocol (CBHRP) is proposed in this paper. It is an extension of LEACH routing protocol. We introduce cluster head-set idea for cluster-based routing where several clusters are formed with the deployed sensors to collect information from target field. On rotation basis, a head-set member receives data from the neighbor nodes and transmits the aggregated results to the distance base station. This protocol ...

  4. Energy Aware Cluster Based Routing Scheme For Wireless Sensor Network

    Directory of Open Access Journals (Sweden)

    Roy Sohini

    2015-09-01

    Full Text Available Wireless Sensor Network (WSN has emerged as an important supplement to the modern wireless communication systems due to its wide range of applications. The recent researches are facing the various challenges of the sensor network more gracefully. However, energy efficiency has still remained a matter of concern for the researches. Meeting the countless security needs, timely data delivery and taking a quick action, efficient route selection and multi-path routing etc. can only be achieved at the cost of energy. Hierarchical routing is more useful in this regard. The proposed algorithm Energy Aware Cluster Based Routing Scheme (EACBRS aims at conserving energy with the help of hierarchical routing by calculating the optimum number of cluster heads for the network, selecting energy-efficient route to the sink and by offering congestion control. Simulation results prove that EACBRS performs better than existing hierarchical routing algorithms like Distributed Energy-Efficient Clustering (DEEC algorithm for heterogeneous wireless sensor networks and Energy Efficient Heterogeneous Clustered scheme for Wireless Sensor Network (EEHC.

  5. Cluster-based DBMS Management Tool with High-Availability

    Directory of Open Access Journals (Sweden)

    Jae-Woo Chang

    2005-02-01

    Full Text Available A management tool which is needed for monitoring and managing cluster-based DBMSs has been little studied. So, we design and implement a cluster-based DBMS management tool with high-availability that monitors the status of nodes in a cluster system as well as the status of DBMS instances in a node. The tool enables users to recognize a single virtual system image and provides them with the status of all the nodes and resources in the system by using a graphic user interface (GUI. By using a load balancer, our management tool can increase the performance of a cluster-based DBMS as well as can overcome the limitation of the existing parallel DBMSs.

  6. Outsourcing University Degrees: Implications for Quality Control

    Science.gov (United States)

    Edwards, Julie; Crosling, Glenda; Edwards, Ron

    2010-01-01

    Education institutions worldwide have and continue to seek opportunities to spread their offerings abroad. While the provision of courses to students located overseas through partner institutions has many advantages, it raises questions about quality control that are not as applicable to other forms of international education. This paper uses a…

  7. New Design Concept for Universal CCD Controller

    Directory of Open Access Journals (Sweden)

    Wonyong Han

    1994-06-01

    Full Text Available Currently, the CCDs are widely used in astronomical observations either in direct imaging use or spectroscopic mode. However according to the recent technical advances, new large format CCDs are rapidly developed which have better performances with higher quantum efficiency and sensitivity. In many cases, some microprocessors have been adopted to deal with necessary digital logic for a CCD imaging system. This could often lack the flexibility of a system for a user to upgrade with new devices, especially of it is a commercial product. A new design concept has been explored which could provide the opportunity to deal with any format of devices from ant manufactures effectively for astronomical purposes. Recently available PLD (Programmable Logic Devices technology makes it possible to develop such digital circuit design, which can be integrated into a single component, instead of using microprocessors. The design concept could dramatically increase the efficiency and flexibility of a CCD imaging system, particularly when new or large format devices are available and to upgrade the performance of a system. Some variable system control parameters can be selected by a user with a wider range of choice. The software can support such functional requirements very conveniently. This approach can be applied not only to astronomical purpose, but also to some related fields, such as remote sensing and industrial applications.

  8. A micro-controlled universal message multiplexer

    International Nuclear Information System (INIS)

    Fontaine, G.; Guglielmi, L.; Jaeger, J.J.; Szafran, S.

    1981-01-01

    Based on the Motorola 6800, this multiplexer is designed to provide a microprocessor development tool in the specific environment of a high energy physics laboratory. The basic philosophy of this device is to allow communication of a target (prototype) processor with a host computer under control of a human operator. The host can be an experimental on-line computer or any remote machine with a time-sharing network. It is thus possible to speed up design and debugging of a physics application program by taking advantage of the sophisticated resources usually available in a computer centre (powerful editor, large disk space, source management via ''Patchy'' etc...). In addition to the classical cross-macroassembler, a loader is available on the host for down-line loading binary code, via the multiplexer, into the prototype memory. Such a scheme is easiextended to the communication of any host interactive processing program with a data acquisition microprocessor, and provides the latter with a convenient and easily portable extension of its computing power. A typical application of this mode is described in a separate paper

  9. Automated Water Chemistry Control at University of Virginia Pools.

    Science.gov (United States)

    Krone, Dan

    1997-01-01

    Describes the technologically advanced aquatic and fitness center at the University of Virginia. Discusses the imprecise water chemistry control at the former facility and its intensive monitoring requirements. Details the new chemistry control standards initiated in the new center, which ensure constant chlorine and pH levels. (RJM)

  10. Cluster-based global firms' use of local capabilities

    DEFF Research Database (Denmark)

    Andersen, Poul Houman; Bøllingtoft, Anne

    2011-01-01

    Purpose – Despite growing interest in clusters role for the global competitiveness of firms, there has been little research into how globalization affects cluster-based firms’ (CBFs) use of local knowledge resources and the combination of local and global knowledge used. Using the cluster......’s knowledge base as a mediating variable, the purpose of this paper is to examine how globalization affected the studied firms’ use of local cluster-based knowledge, integration of local and global knowledge, and networking capabilities. Design/methodology/approach – Qualitative case studies of nine firms...... in three clusters strongly affected by increasing global division of labour. Findings – The paper suggests that globalization has affected how firms use local resources and combine local and global knowledge. Unexpectedly, clustered firms with explicit procedures and established global fora for exchanging...

  11. Cluster-based localization and tracking in ubiquitous computing systems

    CERN Document Server

    Martínez-de Dios, José Ramiro; Torres-González, Arturo; Ollero, Anibal

    2017-01-01

    Localization and tracking are key functionalities in ubiquitous computing systems and techniques. In recent years a very high variety of approaches, sensors and techniques for indoor and GPS-denied environments have been developed. This book briefly summarizes the current state of the art in localization and tracking in ubiquitous computing systems focusing on cluster-based schemes. Additionally, existing techniques for measurement integration, node inclusion/exclusion and cluster head selection are also described in this book.

  12. Seminal Quality Prediction Using Clustering-Based Decision Forests

    Directory of Open Access Journals (Sweden)

    Hong Wang

    2014-08-01

    Full Text Available Prediction of seminal quality with statistical learning tools is an emerging methodology in decision support systems in biomedical engineering and is very useful in early diagnosis of seminal patients and selection of semen donors candidates. However, as is common in medical diagnosis, seminal quality prediction faces the class imbalance problem. In this paper, we propose a novel supervised ensemble learning approach, namely Clustering-Based Decision Forests, to tackle unbalanced class learning problem in seminal quality prediction. Experiment results on real fertility diagnosis dataset have shown that Clustering-Based Decision Forests outperforms decision tree, Support Vector Machines, random forests, multilayer perceptron neural networks and logistic regression by a noticeable margin. Clustering-Based Decision Forests can also be used to evaluate variables’ importance and the top five important factors that may affect semen concentration obtained in this study are age, serious trauma, sitting time, the season when the semen sample is produced, and high fevers in the last year. The findings could be helpful in explaining seminal concentration problems in infertile males or pre-screening semen donor candidates.

  13. Universal CNC platform motion control technology for industrial CT

    International Nuclear Information System (INIS)

    Cheng Senlin; Wang Yang

    2011-01-01

    According to the more scanning methods and the higher speed of industrial CT, the higher precision of the motion location and the data collection sync-control is required at present, a new motion control technology was proposed, which was established based on the universal CNC system with high precision of multi-axis control. Aiming at the second and the third generation of CT scanning motion, a control method was researched, and achieved the demands of the changeable parameters and network control, Through the simulation of the second and the third generation of CT scanning motion process, the control precision of the rotation axis reached 0.001° and the linear axis reached 0.002 mm, Practical tests showed this system can meet the requirements of the multi-axis motion integration and the sync signal control, it also have advantages in the control precision and the performance. (authors)

  14. Self-control and alcohol consumption among university students in ...

    African Journals Online (AJOL)

    The study explored the relationship between self-control and alcohol consumption among students at the University of Botswana, and was entrenched within the socialcognitive theory of self-regulation. Data were collected from 135 undergraduate students (42.2% female, 57.8% male) with a mean age of 21.22 years (SD ...

  15. Modeling, Identification and Control at Telemark University College

    Directory of Open Access Journals (Sweden)

    Bernt Lie

    2009-07-01

    Full Text Available Master studies in process automation started in 1989 at what soon became Telemark University College, and the 20 year anniversary marks the start of our own PhD degree in Process, Energy and Automation Engineering. The paper gives an overview of research activities related to control engineering at Department of Electrical Engineering, Information Technology and Cybernetics.

  16. The Design of Universal Soft Control for Advanced Power Reactor

    International Nuclear Information System (INIS)

    Ye, Song Hae; Shin, Yeong Cheol; Kang, Sung Kon; Lyou, Joon

    2011-01-01

    Highly-Integrated Control Room (HICR) has been adopted for APR+. APR+ is being developed as the evolutionary improvement of APR1400. In HICR, the traditional control panels, with their assorted gauges, indicating lights, control switches, annunciators, etc., are replaced by computer-driven consolidated operator workstations. Soft control plays a key role in consolidating control in the workstation. Universal Soft Control (USC) has the ability to control plant functions and components in multiple divisions of safety systems and non-safety systems from a single operator workstation. The USC further contribute to the level of consolidation in the workstation and provide better human machine interface with reduced operational burden. However, the implementation of USC poses challenges to the independence among safety divisions and between safety system and non-safety system. This paper presents design features and approach to prevent adverse affects of the safety systems and to minimize the potential for spurious actuations by USC

  17. The Design of Universal Soft Control for Advanced Power Reactor

    Energy Technology Data Exchange (ETDEWEB)

    Ye, Song Hae; Shin, Yeong Cheol; Kang, Sung Kon [Korea Hydro and Nuclear Power Co., Daejeon (Korea, Republic of); Lyou, Joon [Chungnam National University, Daejeon (Korea, Republic of)

    2011-08-15

    Highly-Integrated Control Room (HICR) has been adopted for APR+. APR+ is being developed as the evolutionary improvement of APR1400. In HICR, the traditional control panels, with their assorted gauges, indicating lights, control switches, annunciators, etc., are replaced by computer-driven consolidated operator workstations. Soft control plays a key role in consolidating control in the workstation. Universal Soft Control (USC) has the ability to control plant functions and components in multiple divisions of safety systems and non-safety systems from a single operator workstation. The USC further contribute to the level of consolidation in the workstation and provide better human machine interface with reduced operational burden. However, the implementation of USC poses challenges to the independence among safety divisions and between safety system and non-safety system. This paper presents design features and approach to prevent adverse affects of the safety systems and to minimize the potential for spurious actuations by USC.

  18. Use of university research reactors to teach control engineering

    International Nuclear Information System (INIS)

    Bernard, J.A.

    1991-01-01

    University research reactors (URRs) have provided generations of students with the opportunity to receive instruction and do hands-on work in reactor dynamics, neutron scattering, health physics, and neutron activation analysis. Given that many URRs are currently converting to programmable control systems, the opportunity now exists to provide a similar learning experience to those studying systems control engineering. That possibility is examined here with emphasis on the need for the inclusion of experiment in control engineering curricula, the type of activities that could be performed, and safety considerations

  19. Fuzzy Universal Model Approximator for Distributed Solar Collector Field Control

    KAUST Repository

    Elmetennani, Shahrazed

    2014-07-01

    This paper deals with the control of concentrating parabolic solar collectors by forcing the outlet oil temperature to track a set reference. A fuzzy universal approximate model is introduced in order to accurately reproduce the behavior of the system dynamics. The proposed model is a low order state space representation derived from the partial differential equation describing the oil temperature evolution using fuzzy transform theory. The resulting set of ordinary differential equations simplifies the system analysis and the control law design and is suitable for real time control implementation. Simulation results show good performance of the proposed model.

  20. Reliability analysis of cluster-based ad-hoc networks

    International Nuclear Information System (INIS)

    Cook, Jason L.; Ramirez-Marquez, Jose Emmanuel

    2008-01-01

    The mobile ad-hoc wireless network (MAWN) is a new and emerging network scheme that is being employed in a variety of applications. The MAWN varies from traditional networks because it is a self-forming and dynamic network. The MAWN is free of infrastructure and, as such, only the mobile nodes comprise the network. Pairs of nodes communicate either directly or through other nodes. To do so, each node acts, in turn, as a source, destination, and relay of messages. The virtue of a MAWN is the flexibility this provides; however, the challenge for reliability analyses is also brought about by this unique feature. The variability and volatility of the MAWN configuration makes typical reliability methods (e.g. reliability block diagram) inappropriate because no single structure or configuration represents all manifestations of a MAWN. For this reason, new methods are being developed to analyze the reliability of this new networking technology. New published methods adapt to this feature by treating the configuration probabilistically or by inclusion of embedded mobility models. This paper joins both methods together and expands upon these works by modifying the problem formulation to address the reliability analysis of a cluster-based MAWN. The cluster-based MAWN is deployed in applications with constraints on networking resources such as bandwidth and energy. This paper presents the problem's formulation, a discussion of applicable reliability metrics for the MAWN, and illustration of a Monte Carlo simulation method through the analysis of several example networks

  1. Clustering-based analysis for residential district heating data

    DEFF Research Database (Denmark)

    Gianniou, Panagiota; Liu, Xiufeng; Heller, Alfred

    2018-01-01

    The wide use of smart meters enables collection of a large amount of fine-granular time series, which can be used to improve the understanding of consumption behavior and used for consumption optimization. This paper presents a clustering-based knowledge discovery in databases method to analyze r....... These findings will be valuable for district heating utilities and energy planners to optimize their operations, design demand-side management strategies, and develop targeting energy-efficiency programs or policies.......The wide use of smart meters enables collection of a large amount of fine-granular time series, which can be used to improve the understanding of consumption behavior and used for consumption optimization. This paper presents a clustering-based knowledge discovery in databases method to analyze...... residential heating consumption data and evaluate information included in national building databases. The proposed method uses the K-means algorithm to segment consumption groups based on consumption intensity and representative patterns and ranks the groups according to daily consumption. This paper also...

  2. Depression in university students: associations with impulse control disorders.

    Science.gov (United States)

    Leppink, Eric W; Lust, Katherine; Grant, Jon E

    2016-09-01

    The purpose of this study was to assess the implications of depression in a sample of university students, particularly relating to impulse control disorders. While previous studies have shown high rates of depression among university students, no study to date has assessed whether levels of depression show associations with the incidence of impulse control disorders in this population. In all, 6000 students participated in the College Student Computer Use Survey. A total of 1717 students completed the scales of interest for this analysis. Participants were assigned to groups based on depression scores: severe (N = 75), mild/moderate (N = 647) and none (N = 995). The three groups were assessed using analysis of variance (ANOVA) or chi-square test. A multinomial logistic regression analysis was used to elucidate associations between depression and impulse control disorder diagnoses. Groups differed across demographic, health and academic variables. The severe depression group reported higher rates of skin-picking disorder, compulsive sexual behaviour and compulsive buying. Results suggest a significant association between depression and impulse control disorders. One possibility is that a facet of impulsivity contributes to both problems, which could be important information for clinicians. Future studies will need to clarify the exact nature of the relationship between depression and impulse control disorders.

  3. The challenge of tobacco control at a university hospital

    Directory of Open Access Journals (Sweden)

    Natália Ferreira Cruz

    Full Text Available Objective: To identify the actions taken by the Commission of Tobacco Control (CTC to control smoking in the hospital environment.Methods: Descriptive and exploratory retrospective documentary research conducted at a university hospital in southern Brazil, in 2014. The content of the minutes of CTC meetings was used to create a database, and the rounds reports were descriptively analyzed. We sought to identify the most relevant actions from 2005 to 2014.Results: The CTC implemented the Tobacco-Free Environment programme restricted cigarette smoking to designated areas and subsequently deactivated these areas. The only remaining outdoor smoking area in 2014 was deactivated.Conclusion: CTC actions have contributed to tobacco control in the hospital environment. This study will hopefully serve as a model to encourage other institutions to implement similar actions.

  4. Microgrid central controller development and hierarchical control implemetation in the intelligent microgrid lab of Aalborg University

    OpenAIRE

    Meng, Lexuan; Savaghebi, Mehdi; Andrade, Fabio; Vasquez Quintero, Juan Carlos; Guerrero, Josep M.; Graells Sobré, Moisès

    2015-01-01

    This paper presents the development of a microgrid central controller in an inverter-based intelligent microgrid (iMG) lab in Aalborg University, Denmark. The iMG lab aims to provide a flexible experimental platform for comprehensive studies of microgrids. The complete control system applied in this lab is based on the hierarchical control scheme for microgrids and includes primary, secondary and tertiary control. The structure of the lab, including the lab facilities, configurations and comm...

  5. A universal calculation model for the controlled electric transmission line

    International Nuclear Information System (INIS)

    Zivzivadze, O.; Zivzivadze, L.

    2009-01-01

    Difficulties associated with the development of calculation models are analyzed, and the ways of resolution of these problems are given. A version of the equivalent circuit as a six-pole network, the parameters of which do not depend on the angle of shift Θ between the voltage vectors of circuits is offered. The interrelation between the parameters of the equivalent circuit and the transmission constants of the line was determined. A universal calculation model for the controlled electric transmission line was elaborated. The model allows calculating the stationary modes of lines of such classes at any angle of shift Θ between the circuits. (author)

  6. Cluster-based analysis of multi-model climate ensembles

    Science.gov (United States)

    Hyde, Richard; Hossaini, Ryan; Leeson, Amber A.

    2018-06-01

    Clustering - the automated grouping of similar data - can provide powerful and unique insight into large and complex data sets, in a fast and computationally efficient manner. While clustering has been used in a variety of fields (from medical image processing to economics), its application within atmospheric science has been fairly limited to date, and the potential benefits of the application of advanced clustering techniques to climate data (both model output and observations) has yet to be fully realised. In this paper, we explore the specific application of clustering to a multi-model climate ensemble. We hypothesise that clustering techniques can provide (a) a flexible, data-driven method of testing model-observation agreement and (b) a mechanism with which to identify model development priorities. We focus our analysis on chemistry-climate model (CCM) output of tropospheric ozone - an important greenhouse gas - from the recent Atmospheric Chemistry and Climate Model Intercomparison Project (ACCMIP). Tropospheric column ozone from the ACCMIP ensemble was clustered using the Data Density based Clustering (DDC) algorithm. We find that a multi-model mean (MMM) calculated using members of the most-populous cluster identified at each location offers a reduction of up to ˜ 20 % in the global absolute mean bias between the MMM and an observed satellite-based tropospheric ozone climatology, with respect to a simple, all-model MMM. On a spatial basis, the bias is reduced at ˜ 62 % of all locations, with the largest bias reductions occurring in the Northern Hemisphere - where ozone concentrations are relatively large. However, the bias is unchanged at 9 % of all locations and increases at 29 %, particularly in the Southern Hemisphere. The latter demonstrates that although cluster-based subsampling acts to remove outlier model data, such data may in fact be closer to observed values in some locations. We further demonstrate that clustering can provide a viable and

  7. The universal read-out controller for CBM at FAIR

    Energy Technology Data Exchange (ETDEWEB)

    Manz, Sebastian; Abel, Norbert; Gebelein, Jano [Kirchhoff-Institut fuer Physik, Heidelberg (Germany); Collaboration: CBM-Collaboration

    2011-07-01

    Since 2007 we design and develop the firmware for the read-out controller (ROC) for data acquisition of the CBM detector at FAIR. While our first implementation solely focused on the nXYTER chip, today we are also designing and implementing readout logic for the GET4 chip which is supposed to be part of the time of flight (TOF) detector. Furthermore, we fully support both Ethernet and Optical transport as two transparent solutions. This addresses the different requirements of a laboratory setup and the final detector setup respectively. The usage of a strict modularization of the Read Out Controller firmware enables us to provide an Universal ROC where front-end specific logic and transport logic can be combined in a very flexible way. Fault tolerance techniques are only required for some of those modules and hence are only implemented there.

  8. A Secure Cluster-Based Multipath Routing Protocol for WMSNs

    Directory of Open Access Journals (Sweden)

    Jamal N. Al-Karaki

    2011-04-01

    Full Text Available The new characteristics of Wireless Multimedia Sensor Network (WMSN and its design issues brought by handling different traffic classes of multimedia content (video streams, audio, and still images as well as scalar data over the network, make the proposed routing protocols for typical WSNs not directly applicable for WMSNs. Handling real-time multimedia data requires both energy efficiency and QoS assurance in order to ensure efficient utility of different capabilities of sensor resources and correct delivery of collected information. In this paper, we propose a Secure Cluster-based Multipath Routing protocol for WMSNs, SCMR, to satisfy the requirements of delivering different data types and support high data rate multimedia traffic. SCMR exploits the hierarchical structure of powerful cluster heads and the optimized multiple paths to support timeliness and reliable high data rate multimedia communication with minimum energy dissipation. Also, we present a light-weight distributed security mechanism of key management in order to secure the communication between sensor nodes and protect the network against different types of attacks. Performance evaluation from simulation results demonstrates a significant performance improvement comparing with existing protocols (which do not even provide any kind of security feature in terms of average end-to-end delay, network throughput, packet delivery ratio, and energy consumption.

  9. Development of environmentally friendly universal controller. Data and materials; 1998 nendo kankyo taio universal controller no kaihatsu seika hokokusho. Shiryohen

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-05-01

    Research and development was carried out for an 'environmentally friendly universal controller (UC)' which would be 'user-friendly and energy-saving' when used with electrical home appliances, and data and materials on them were compiled into this volume. It covers the specifications (Versions 0.6 and 0.51) of a newly developed two-way controller protocol, the specification (Version 0.1) of two-way remote control IrDA-C communication unit hardware, an infrared communication protocol IrDa Control, and the like. It also accommodates information collected through surveys of technological trends as reflected in technical literature, Internet home pages, catalogs, and the like, concerning the user-friendliness of electrical home appliances, remote control, domestic consumption of electric power, and the like. Also covered is the result of surveys of patents involving environmentally friendly UC related technologies, namely, Japanese patents (from applications made in 1979 through disclosures made in 1998) and U.S. patents (registrations made in 1982 and thereafter). Furthermore, it contains the result of surveys of actualities of domestic use conducted for the purpose of clarifying the effect of environmentally friendly UC introduction, how such UCs are being accepted by the public, and the conditions that should be satisfied for their popularization. (NEDO)

  10. Development of environmentally friendly universal controller. Data and materials; 1998 nendo kankyo taio universal controller no kaihatsu seika hokokusho. Shiryohen

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-05-01

    Research and development was carried out for an 'environmentally friendly universal controller (UC)' which would be 'user-friendly and energy-saving' when used with electrical home appliances, and data and materials on them were compiled into this volume. It covers the specifications (Versions 0.6 and 0.51) of a newly developed two-way controller protocol, the specification (Version 0.1) of two-way remote control IrDA-C communication unit hardware, an infrared communication protocol IrDa Control, and the like. It also accommodates information collected through surveys of technological trends as reflected in technical literature, Internet home pages, catalogs, and the like, concerning the user-friendliness of electrical home appliances, remote control, domestic consumption of electric power, and the like. Also covered is the result of surveys of patents involving environmentally friendly UC related technologies, namely, Japanese patents (from applications made in 1979 through disclosures made in 1998) and U.S. patents (registrations made in 1982 and thereafter). Furthermore, it contains the result of surveys of actualities of domestic use conducted for the purpose of clarifying the effect of environmentally friendly UC introduction, how such UCs are being accepted by the public, and the conditions that should be satisfied for their popularization. (NEDO)

  11. Two Tier Cluster Based Data Aggregation (TTCDA) in Wireless Sensor Network

    DEFF Research Database (Denmark)

    Dnyaneshwar, Mantri; Prasad, Neeli R.; Prasad, Ramjee

    2012-01-01

    Wireless Sensor Network (WSN) often used for monitoring and control applications where sensor nodes collect data and send it to the sink. Most of the nodes consume their energy in transmission of data packets without aggregation to sink, which may be located at single or multi hop distance....... The direct transmission of data packets to the sink from nodes in the network causes increased communication costs in terms of energy, average delay and network lifetime. In this context, the data aggregation techniques minimize the communication cost with efficient bandwidth utilization by decreasing...... the packet count reached at the sink. Here, we propose Two Tier Cluster based Data Aggregation (TTCDA) algorithm for the randomly distributed nodes to minimize computation and communication cost. The TTCDA is energy and bandwidth efficient since it reduces the transmission of the number of packets...

  12. A universal bilateral manual controller utilizing a unique parallel architecture

    International Nuclear Information System (INIS)

    Bevill, P.J.; Lovett, J.T.

    1990-01-01

    Since 1987, the Advanced Technology Division of the US Department of Energy has sponsored a team composed of four universities and Oak Ridge National Laboratory to pursue research leading to the development and deployment of an advanced robotic system. The tasks to be performed by this system will be those tasks that are hazardous to humans, that generate significant occupational radiation exposure, and those which can be performed more rapidly and more accurately by an automated system. An essential component of the program plan is the annual technology demonstration performed at the Center for Engineering Systems Advanced Research (CESAR) at Oak Ridge National Laboratory. The scenario selected for the 1989 technology demonstration involved the cleanup of a spill of a simulated hazardous material. The demonstration utilized the seven-degrees-of-freedom CESARm manipulator, which is mounted aboard the HERMIES III transporter. The transporter traveled to the site of the simulated spill through an obstacle-strewn environment both under direct human control and autonomously, navigating by reference to the computer-stored world model. After arriving at the site of the spill, the vision system scanned and located the spill, thus determining its position in local and global coordinate frames. This information was used to generate a manipulator sweep pattern that resulted in the removal of the spilled material by a vacuum device

  13. Improvement by the Life Cycle Control System of University Production With Use of CALS-Tehnology

    Directory of Open Access Journals (Sweden)

    Yuriy I. Dreizis

    2013-01-01

    Full Text Available The mechanism of management by life cycle of production of university with use of CALS technologies is described. Tasks of service of marketing and the quality management department, connected with university product quality control are defined

  14. An Energy Centric Cluster-Based Routing Protocol for Wireless Sensor Networks.

    Science.gov (United States)

    Hosen, A S M Sanwar; Cho, Gi Hwan

    2018-05-11

    Clustering is an effective way to prolong the lifetime of a wireless sensor network (WSN). The common approach is to elect cluster heads to take routing and controlling duty, and to periodically rotate each cluster head's role to distribute energy consumption among nodes. However, a significant amount of energy dissipates due to control messages overhead, which results in a shorter network lifetime. This paper proposes an energy-centric cluster-based routing mechanism in WSNs. To begin with, cluster heads are elected based on the higher ranks of the nodes. The rank is defined by residual energy and average distance from the member nodes. With the role of data aggregation and data forwarding, a cluster head acts as a caretaker for cluster-head election in the next round, where the ranks' information are piggybacked along with the local data sending during intra-cluster communication. This reduces the number of control messages for the cluster-head election as well as the cluster formation in detail. Simulation results show that our proposed protocol saves the energy consumption among nodes and achieves a significant improvement in the network lifetime.

  15. Tobacco control programmes for universities: a feasibility study.

    Science.gov (United States)

    Willcox, M L

    1997-03-01

    University may be a good time for smoking cessation, because younger, lighter smokers are more successful at stopping. An initial survey of 4141 students at Cambridge and Anglia Polytechnic universities identified the prevalence of smoking; questionnaires were given to smokers asking about desire to stop. Some respondents were invited to a discussion, but very few came. Those wanting to quit were sent a second questionnaire about what help they wanted. On National No Smoking Day, 101 students were interviewed about "stop smoking' advertisements, and those wanting to stop smoking were offered different forms of help. Lastly, student union welfare officers at 54 universities in the United Kingdom were interviewed over the telephone, about what motivation and support they provide for students to stop smoking, and what more they would consider providing. Prevalence of smoking varied according to university, subject studied and sex. Desire to quit varied with subject studied, duration of habit and amount smoked. Some "stop smoking' TV adverts were widely remembered, but their motivational impact remains unclear. Most of those wanting to stop found it difficult, but few requested help unless approached directly. Only books were widely used, and innovative ones seemed most popular. Few student unions provided effective encouragement or help for students to stop smoking. Most said they would consider doing more. There is a need for smoking cessation programmes at universities. More research is needed on ways of motivating those who do not want to stop. "Direct marketing' of books seems the best way of reaching those who want to stop. The effectiveness of different books needs to be evaluated. There is great potential for improving the quality, quantity and availability of cessation aids through student unions.

  16. MCBT: Multi-Hop Cluster Based Stable Backbone Trees for Data Collection and Dissemination in WSNs

    Directory of Open Access Journals (Sweden)

    Tae-Jin Lee

    2009-07-01

    Full Text Available We propose a stable backbone tree construction algorithm using multi-hop clusters for wireless sensor networks (WSNs. The hierarchical cluster structure has advantages in data fusion and aggregation. Energy consumption can be decreased by managing nodes with cluster heads. Backbone nodes, which are responsible for performing and managing multi-hop communication, can reduce the communication overhead such as control traffic and minimize the number of active nodes. Previous backbone construction algorithms, such as Hierarchical Cluster-based Data Dissemination (HCDD and Multicluster, Mobile, Multimedia radio network (MMM, consume energy quickly. They are designed without regard to appropriate factors such as residual energy and degree (the number of connections or edges to other nodes of a node for WSNs. Thus, the network is quickly disconnected or has to reconstruct a backbone. We propose a distributed algorithm to create a stable backbone by selecting the nodes with higher energy or degree as the cluster heads. This increases the overall network lifetime. Moreover, the proposed method balances energy consumption by distributing the traffic load among nodes around the cluster head. In the simulation, the proposed scheme outperforms previous clustering schemes in terms of the average and the standard deviation of residual energy or degree of backbone nodes, the average residual energy of backbone nodes after disseminating the sensed data, and the network lifetime.

  17. Effective Social Relationship Measurement and Cluster Based Routing in Mobile Opportunistic Networks †

    Science.gov (United States)

    Zeng, Feng; Zhao, Nan; Li, Wenjia

    2017-01-01

    In mobile opportunistic networks, the social relationship among nodes has an important impact on data transmission efficiency. Motivated by the strong share ability of “circles of friends” in communication networks such as Facebook, Twitter, Wechat and so on, we take a real-life example to show that social relationships among nodes consist of explicit and implicit parts. The explicit part comes from direct contact among nodes, and the implicit part can be measured through the “circles of friends”. We present the definitions of explicit and implicit social relationships between two nodes, adaptive weights of explicit and implicit parts are given according to the contact feature of nodes, and the distributed mechanism is designed to construct the “circles of friends” of nodes, which is used for the calculation of the implicit part of social relationship between nodes. Based on effective measurement of social relationships, we propose a social-based clustering and routing scheme, in which each node selects the nodes with close social relationships to form a local cluster, and the self-control method is used to keep all cluster members always having close relationships with each other. A cluster-based message forwarding mechanism is designed for opportunistic routing, in which each node only forwards the copy of the message to nodes with the destination node as a member of the local cluster. Simulation results show that the proposed social-based clustering and routing outperforms the other classic routing algorithms. PMID:28498309

  18. Effective Social Relationship Measurement and Cluster Based Routing in Mobile Opportunistic Networks.

    Science.gov (United States)

    Zeng, Feng; Zhao, Nan; Li, Wenjia

    2017-05-12

    In mobile opportunistic networks, the social relationship among nodes has an important impact on data transmission efficiency. Motivated by the strong share ability of "circles of friends" in communication networks such as Facebook, Twitter, Wechat and so on, we take a real-life example to show that social relationships among nodes consist of explicit and implicit parts. The explicit part comes from direct contact among nodes, and the implicit part can be measured through the "circles of friends". We present the definitions of explicit and implicit social relationships between two nodes, adaptive weights of explicit and implicit parts are given according to the contact feature of nodes, and the distributed mechanism is designed to construct the "circles of friends" of nodes, which is used for the calculation of the implicit part of social relationship between nodes. Based on effective measurement of social relationships, we propose a social-based clustering and routing scheme, in which each node selects the nodes with close social relationships to form a local cluster, and the self-control method is used to keep all cluster members always having close relationships with each other. A cluster-based message forwarding mechanism is designed for opportunistic routing, in which each node only forwards the copy of the message to nodes with the destination node as a member of the local cluster. Simulation results show that the proposed social-based clustering and routing outperforms the other classic routing algorithms.

  19. Image quality control in radiodiagnostic in an University Hospital

    International Nuclear Information System (INIS)

    Almeida, Claudio Domingues de; Mota, Helvecio C.; Almeida, Carlos Eduardo de

    1996-01-01

    The image quality criteria proposed for European Union (UE) has been used to evaluate the chest x-ray examinations in a typical Department of Radiology of an University Hospital in Rio de Janeiro. The study includes information on x-ray beam parameters, film-screen combination, doses to the patients, film processing and image quality. Lateral and PA chest examinations of 63 patients were investigated. Only 10% of the patients presented entrance doses greater than the reference level proposed for UE and adopted by International Atomic Energy Agency and World Health Organization. The image quality has been approved for 87% of the examinations. (author)

  20. Evaluation of information technology impact on effective internal control in the University system

    Energy Technology Data Exchange (ETDEWEB)

    Sanusi Fasilat, A., E-mail: Fasilat17@gmail.com; Hassan, Haslinda, E-mail: lynn@uum.edu.my [School of Accountancy, College of Business, Universiti Utara Malaysia, Sintok, Kedah (Malaysia)

    2015-12-11

    Information Technology (IT) plays a key role in internal control system in various organizations in terms of maintaining records and other internal services. Internal control system is defined as an efficient control procedures set up by firm to safeguard resources and to assure the reliability and accuracy of both financial and non-financial records in line with applicable governance and procedure to acquire the established goal and objectives. This paper focuses on the impact of IT on internal control system in the Nigerian universities. Data are collected from three different universities via questionnaire. Descriptive statistics is used to analyze the data; Chi-square is performed to test the hypothesis. The results of the hypothesis showed that IT has a positive relationship with the effective internal control activities in the University system. It is concluded that the adoption of IT will significantly improve the effectiveness of the internal control system operations in the University in terms of quality service delivery.

  1. Evaluation of information technology impact on effective internal control in the University system

    International Nuclear Information System (INIS)

    Sanusi Fasilat, A.; Hassan, Haslinda

    2015-01-01

    Information Technology (IT) plays a key role in internal control system in various organizations in terms of maintaining records and other internal services. Internal control system is defined as an efficient control procedures set up by firm to safeguard resources and to assure the reliability and accuracy of both financial and non-financial records in line with applicable governance and procedure to acquire the established goal and objectives. This paper focuses on the impact of IT on internal control system in the Nigerian universities. Data are collected from three different universities via questionnaire. Descriptive statistics is used to analyze the data; Chi-square is performed to test the hypothesis. The results of the hypothesis showed that IT has a positive relationship with the effective internal control activities in the University system. It is concluded that the adoption of IT will significantly improve the effectiveness of the internal control system operations in the University in terms of quality service delivery

  2. Evaluation of information technology impact on effective internal control in the University system

    Science.gov (United States)

    Sanusi Fasilat, A.; Hassan, Haslinda

    2015-12-01

    Information Technology (IT) plays a key role in internal control system in various organizations in terms of maintaining records and other internal services. Internal control system is defined as an efficient control procedures set up by firm to safeguard resources and to assure the reliability and accuracy of both financial and non-financial records in line with applicable governance and procedure to acquire the established goal and objectives. This paper focuses on the impact of IT on internal control system in the Nigerian universities. Data are collected from three different universities via questionnaire. Descriptive statistics is used to analyze the data; Chi-square is performed to test the hypothesis. The results of the hypothesis showed that IT has a positive relationship with the effective internal control activities in the University system. It is concluded that the adoption of IT will significantly improve the effectiveness of the internal control system operations in the University in terms of quality service delivery.

  3. An improvement of speed control performances of a two-mass system using a universal approximator

    DEFF Research Database (Denmark)

    Lee, Kyo Beum; Blåbjerg, Frede

    2007-01-01

    A new control scheme using a universal approximator based on a radial basis ti.tnction network (RBFN) is proposed and investigated for improving the control characteristics of the high-performance motion control system. This control method presents better performance in the corresponding speed vi...

  4. Universal controller for concentration-diffusion of messages

    International Nuclear Information System (INIS)

    Yon, Gerard

    1970-01-01

    This research thesis reports the development of a line controller with memory (CLM) designed for data transmission in information processing systems, in this case a THAC 4020 computer, by ensuring power, flexibility and safety of data transmission in noticeable economic conditions. This controller relies on two essential characteristics: message processing at the bit level, and direct storage of messages in a ferrite-torus-based memory without intervention of the computer and even without slowing down its activity. After a recall of issues and techniques related to data transmission, the author defines and discusses the functional specifications of the controller [fr

  5. Control module and module for priority set-up for the CAMAC universal branch driver

    International Nuclear Information System (INIS)

    Nguen Fuk; Smirnov, V.A.

    1976-01-01

    Control module of BKD-871 universal branch driver operates as a controller in the control crate. This module performs synchronous data transmission to (from) the computer and shapes time signals for A-type controllers. The following regimes of data block transmission may be organized with the help of the control module: address scanning regime; repeated reference regime; stop regime. A priority driving module is required for organization of simultaneous operation from several control sources

  6. Universe

    CERN Document Server

    2009-01-01

    The Universe, is one book in the Britannica Illustrated Science Library Series that is correlated to the science curriculum in grades 5-8. The Britannica Illustrated Science Library is a visually compelling set that covers earth science, life science, and physical science in 16 volumes.  Created for ages 10 and up, each volume provides an overview on a subject and thoroughly explains it through detailed and powerful graphics-more than 1,000 per volume-that turn complex subjects into information that students can grasp.  Each volume contains a glossary with full definitions for vocabulary help and an index.

  7. Personality, Academic Self-Efficacy, Academic Locus of Control and Academic Procrastination Among University Students

    OpenAIRE

    Yazıcı, Hikmet; Albayrak, Elif; Reisoğlu, Serpil

    2016-01-01

    There are several variables to determine academic procrastination behavior among university students. The main aim of the present study was to investigate the relationships among big five personality, academic self-efficacy, academic locus of control and academic procrastination. Research group consisted of 885 university students (Female=496, Male=389) in 2012/2013 academic year in Karadeniz Technical University. Results from study indicated that responsibility and amenability subscales of b...

  8. A computer program for controlling a university radioactive material inventory: From confusion to computer to control

    International Nuclear Information System (INIS)

    Robb, D.B.; Riches, C.G.; O'Brian, M.J.; Riordan, F.J.

    1984-01-01

    The University of Washington is a large user of radioactive material. Over 250 authorized programs are working in over 600 labs with nearly 3500 orders of radioactive material per year. The state license sets limits on the total amount of material on campus. There are also limits on sewer disposal. To meet these needs it is necessary to know the amount of material on campus at any time. A computer program was developed which covered many aspects of the radiation safety record needs including inventory control. Inventory is now managed by tracking each order from purchase to disposal. A screen menu as part of the interactive program allows immediate and detailed information about the inventory at time of purchase approval and delivery. Because of this system our knowledge and control of radionuclide work on campus has increased dramatically. A description of how this system is used during ordering, delivery and disposal will be given. Details on the methods to check limits are included along with a summary of the reports made possible by the current data files

  9. Automated Book Order and Circulation Control Procedures at the Oakland University Library

    Directory of Open Access Journals (Sweden)

    Lawrence Auld

    1968-05-01

    Full Text Available Automated systems of book order and circulation control using an IBM 1620 Computer are described as developed at Oakland University. Relative degrees of success and failure are discussed briefly.

  10. Using the Pebb Universal Controller to Modify Control Algorithms for DC-To-DC Converters and Implement Closed-Loop Control of ARCP Inverters

    National Research Council Canada - National Science Library

    Floodeen, David

    1998-01-01

    The objective of this thesis is two-fold. The first goal is to expand the operational capabilities of the Ship's Service Converter Module control algorithm for a DC-to-DC converter using the Universal Controller...

  11. The Effect of Cluster-Based Instruction on Mathematic Achievement in Inclusive Schools

    Science.gov (United States)

    Gunarhadi, Sunardi; Anwar, Mohammad; Andayani, Tri Rejeki; Shaari, Abdull Sukor

    2016-01-01

    The research aimed to investigate the effect of Cluster-Based Instruction (CBI) on the academic achievement of Mathematics in inclusive schools. The sample was 68 students in two intact classes, including those with learning disabilities, selected using a cluster random technique among 17 inclusive schools in the regency of Surakarta. The two…

  12. Achievement report for fiscal 1998 in developing environment corresponding universal controller (Individual report edition); 1998 nendo kankyo taio universal controller no kaihatsu seika hokokusho. Kobetsu hokokuhen

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-05-01

    Research and development has been performed on an 'environment corresponding universal controller (UC)' that realizes 'easiness of use and energy conservation' in correspondence with household electric appliances. This paper summarizes the reports by themes. The summarized development themes include: 'development of a bi-directional controller and TV interface', 'development of a bi-directional remote controller, an infrared ray to radio converter, and an air conditioner corresponding to the bi-directional remote controller', 'development of a UC corresponding air conditioner, and electric power cable transporting gateway', 'development of a universal controller and a control box', and 'development of an energy saving wiring system for the UC remote controller'. This paper also summarizes the works done by research participating departments of each corporation, such as development of UC corresponding video and TV sets (Sanyo Electric), development of UC corresponding TV sets (Toshiba), development of a UC corresponding DVD player (Japan Victor and Victor Techno-brain), and development of a UC relay box and a control box for the existing HA system (PANA R and D). (NEDO)

  13. The relationship between motivational structure, sense of control, intrinsic motivation and university students' alcohol consumption.

    Science.gov (United States)

    Shamloo, Zohreh Sepehri; Cox, W Miles

    2010-02-01

    The aim of this study was to determine how sense of control and intrinsic motivation are related to university students' motivational structure and alcohol consumption. Participants were 94 university students who completed the Personal Concerns Inventory, Shapiro Control Inventory, Helplessness Questionnaire, Intrinsic-Extrinsic Aspirations Scale, and Alcohol Use Questionnaire. Results showed that sense of control and intrinsic motivation were positively correlated with adaptive motivation and negatively correlated with alcohol consumption. Mediational analyses indicated that adaptive motivation fully mediated the relationship between sense of control/intrinsic motivation and alcohol consumption.

  14. Universality in exact quantum state population dynamics and control

    International Nuclear Information System (INIS)

    Wu, Lian-Ao; Segal, Dvira; Brumer, Paul; Egusquiza, Inigo L.

    2010-01-01

    We consider an exact population transition, defined as the probability of finding a state at a final time that is exactly equal to the probability of another state at the initial time. We prove that, given a Hamiltonian, there always exists a complete set of orthogonal states that can be employed as time-zero states for which this exact population transition occurs. The result is general: It holds for arbitrary systems, arbitrary pairs of initial and final states, and for any time interval. The proposition is illustrated with several analytic models. In particular, we demonstrate that in some cases, by tuning the control parameters, a complete transition might occur, where a target state, vacant at t=0, is fully populated at time τ.

  15. Quality Control of Radiotherapy in University Hospital Rijeka

    International Nuclear Information System (INIS)

    Smilovic Radojcic, Dj.; Svabic, M.; Diklic, A.; Jurkovic, S.

    2011-01-01

    The goal of radiotherapy is to irradiate up high doses tumor volume and safety zone around it. Additional demand is to spare healthy tissues as much as possible. In UH Rijeka there is equipment using which that demands could be satisfied. Beside linear accelerators with multileaf collimators, CT simulators, 3D treatment planning system and record and verify system we use advanced dosymetry systems, tools for quality control as well as different ''geometrical'' and antrophomorfic phantoms. Clinicaly good plan could be accomplished using CT simulator for the images aquisition of volume of interest. This must be followed by precise countouring of different anatomical structures and tretment planning on treatment planning system. At this point this plan is still virtual. It is further neccessary that real to the patient delivered dose distribution accomodate the calculated one as accurate as possible. That could be the case only if mechanical and radiation parameters of machines used lie deep into the specified tolerances. Additionaly, it is necessary to verify dosimetricaly whether characteristics of radiation beams are inside the limits specified in time of beam modelling. At the end, before clinical utilization, dose distribution measurements in atrophomorphic phantoms are required. Therefore, in case that measured dose distribution accomodate planned one, virtual plan becames real. (author)

  16. Macroeconomic impacts of Universal Health Coverage : Synthetic control evidence from Thailand

    NARCIS (Netherlands)

    M. Rieger (Matthias); N. Wagner (Natascha); A.S. Bedi (Arjun Singh)

    2015-01-01

    textabstractWe study the impact of Universal Health Coverage (UHC) on various macroeconomic outcomes in Thailand using synthetic control methods. Thailand is compared to a weighted average of control countries in terms of aggregate health and economic performance over the period 1995 to 2012. Our

  17. Development of Universal Controller Architecture for SiC Based Power Electronic Building Blocks

    Science.gov (United States)

    2017-10-30

    SiC Based Power Electronic Building Blocks Award Number Title of Research 30 October 2017 SUBMITTED BY D R. HERBERT L. G INN, Pl DEPT. OF...Naval Research , Philadelphia PA, Aug. 2017. • Ginn, H.L. Bakos J., "Development of Universal Controller Architecture for SiC Based Power Electronic...Controller Implementation for MMC Converters", Workshop on Control Architectures for Modular Power Conversion Systems, Office of Naval Research , Arlington VA

  18. A universal portable appliance for stellarator W7-X power supply controlling

    International Nuclear Information System (INIS)

    Xu Weihua

    2001-01-01

    In the project Wendelstein 7-X (W7-X), the popular field bus Profibus has been determined as a uniform connection between the central control system and all the subordinate systems. A universal embedded control system has been developed for W7-X power supply controlling. Siemens 80C167CR micro-controller is used as the central control unit of the system. With a user-defined printed circuit board (PCB) several control buses, i.e., Profibus, CAN, IEEE 488, RS485 and RS232 have been connected to the micro-controller. The corresponding hardware interfaces for the control buses have been designed. A graphic liquid crystal display (LCD) and a user-defined keyboard are used as user interface. The control software will be developed with a C-like language, i.e., C166 for the controller

  19. Analyzing the factors affecting network lifetime cluster-based wireless sensor network

    International Nuclear Information System (INIS)

    Malik, A.S.; Qureshi, A.

    2010-01-01

    Cluster-based wireless sensor networks enable the efficient utilization of the limited energy resources of the deployed sensor nodes and hence prolong the node as well as network lifetime. Low Energy Adaptive Clustering Hierarchy (Leach) is one of the most promising clustering protocol proposed for wireless sensor networks. This paper provides the energy utilization and lifetime analysis for cluster-based wireless sensor networks based upon LEACH protocol. Simulation results identify some important factors that induce unbalanced energy utilization between the sensor nodes and hence affect the network lifetime in these types of networks. These results highlight the need for a standardized, adaptive and distributed clustering technique that can increase the network lifetime by further balancing the energy utilization among sensor nodes. (author)

  20. K-means-clustering-based fiber nonlinearity equalization techniques for 64-QAM coherent optical communication system.

    Science.gov (United States)

    Zhang, Junfeng; Chen, Wei; Gao, Mingyi; Shen, Gangxiang

    2017-10-30

    In this work, we proposed two k-means-clustering-based algorithms to mitigate the fiber nonlinearity for 64-quadrature amplitude modulation (64-QAM) signal, the training-sequence assisted k-means algorithm and the blind k-means algorithm. We experimentally demonstrated the proposed k-means-clustering-based fiber nonlinearity mitigation techniques in 75-Gb/s 64-QAM coherent optical communication system. The proposed algorithms have reduced clustering complexity and low data redundancy and they are able to quickly find appropriate initial centroids and select correctly the centroids of the clusters to obtain the global optimal solutions for large k value. We measured the bit-error-ratio (BER) performance of 64-QAM signal with different launched powers into the 50-km single mode fiber and the proposed techniques can greatly mitigate the signal impairments caused by the amplified spontaneous emission noise and the fiber Kerr nonlinearity and improve the BER performance.

  1. A Gloss Composition and Context Clustering Based Distributed Word Sense Representation Model

    Directory of Open Access Journals (Sweden)

    Tao Chen

    2015-08-01

    Full Text Available In recent years, there has been an increasing interest in learning a distributed representation of word sense. Traditional context clustering based models usually require careful tuning of model parameters, and typically perform worse on infrequent word senses. This paper presents a novel approach which addresses these limitations by first initializing the word sense embeddings through learning sentence-level embeddings from WordNet glosses using a convolutional neural networks. The initialized word sense embeddings are used by a context clustering based model to generate the distributed representations of word senses. Our learned representations outperform the publicly available embeddings on half of the metrics in the word similarity task, 6 out of 13 sub tasks in the analogical reasoning task, and gives the best overall accuracy in the word sense effect classification task, which shows the effectiveness of our proposed distributed distribution learning model.

  2. A Cluster-Based Framework for the Security of Medical Sensor Environments

    Science.gov (United States)

    Klaoudatou, Eleni; Konstantinou, Elisavet; Kambourakis, Georgios; Gritzalis, Stefanos

    The adoption of Wireless Sensor Networks (WSNs) in the healthcare sector poses many security issues, mainly because medical information is considered particularly sensitive. The security mechanisms employed are expected to be more efficient in terms of energy consumption and scalability in order to cope with the constrained capabilities of WSNs and patients’ mobility. Towards this goal, cluster-based medical WSNs can substantially improve efficiency and scalability. In this context, we have proposed a general framework for cluster-based medical environments on top of which security mechanisms can rely. This framework fully covers the varying needs of both in-hospital environments and environments formed ad hoc for medical emergencies. In this paper, we further elaborate on the security of our proposed solution. We specifically focus on key establishment mechanisms and investigate the group key agreement protocols that can best fit in our framework.

  3. Design, synthesis and photochemical properties of the first examples of iminosugar clusters based on fluorescent cores

    Directory of Open Access Journals (Sweden)

    Mathieu L. Lepage

    2015-05-01

    Full Text Available The synthesis and photophysical properties of the first examples of iminosugar clusters based on a BODIPY or a pyrene core are reported. The tri- and tetravalent systems designed as molecular probes and synthesized by way of Cu(I-catalysed azide–alkyne cycloadditions are fluorescent analogues of potent pharmacological chaperones/correctors recently reported in the field of Gaucher disease and cystic fibrosis, two rare genetic diseases caused by protein misfolding.

  4. Trend analysis using non-stationary time series clustering based on the finite element method

    OpenAIRE

    Gorji Sefidmazgi, M.; Sayemuzzaman, M.; Homaifar, A.; Jha, M. K.; Liess, S.

    2014-01-01

    In order to analyze low-frequency variability of climate, it is useful to model the climatic time series with multiple linear trends and locate the times of significant changes. In this paper, we have used non-stationary time series clustering to find change points in the trends. Clustering in a multi-dimensional non-stationary time series is challenging, since the problem is mathematically ill-posed. Clustering based on the finite element method (FEM) is one of the methods ...

  5. Energy-Efficient Cluster Based Routing Protocol in Mobile Ad Hoc Networks Using Network Coding

    OpenAIRE

    Srinivas Kanakala; Venugopal Reddy Ananthula; Prashanthi Vempaty

    2014-01-01

    In mobile ad hoc networks, all nodes are energy constrained. In such situations, it is important to reduce energy consumption. In this paper, we consider the issues of energy efficient communication in MANETs using network coding. Network coding is an effective method to improve the performance of wireless networks. COPE protocol implements network coding concept to reduce number of transmissions by mixing the packets at intermediate nodes. We incorporate COPE into cluster based routing proto...

  6. Impaired theory of mind in first-episode schizophrenia: comparison with community, university and depressed controls.

    Science.gov (United States)

    Kettle, Jonathan W L; O'Brien-Simpson, Laurie; Allen, Nicholas B

    2008-02-01

    First order theory of mind, as measured by the 'Reading the Mind in the Eyes Test' Revised, is impaired in schizophrenia. However, no study has investigated whether this occurs in first-episode schizophrenia. Also, it is unclear whether such a deficit is specific to schizophrenia, and whether convenience control samples, particularly undergraduate university students, represent valid comparison groups. This study investigated theory of mind ability, measured by the 'Reading the Mind in the Eyes Test' Revised, in a group of first-episode schizophrenia outpatients (n=13) and three control groups: outpatients with non-psychotic major depression (n=14), individuals from the general community (n=16) and from an undergraduate university course (n=27). The schizophrenia group exhibited significant theory of mind impairments compared to both non-psychiatric control groups but not the depression group. Unexpectedly, the depression group was not significantly impaired compared to the community control group, and the university control group exhibited superior theory of mind ability relative to all three groups. The findings indicate theory of mind deficits in first episode schizophrenia and support the implementation of theory of mind interventions in first-episode schizophrenia treatment programs. Results also indicate that community rather than university control groups represent more valid comparison groups in first-episode schizophrenia research.

  7. A Survey on the Taxonomy of Cluster-Based Routing Protocols for Homogeneous Wireless Sensor Networks

    Science.gov (United States)

    Naeimi, Soroush; Ghafghazi, Hamidreza; Chow, Chee-Onn; Ishii, Hiroshi

    2012-01-01

    The past few years have witnessed increased interest among researchers in cluster-based protocols for homogeneous networks because of their better scalability and higher energy efficiency than other routing protocols. Given the limited capabilities of sensor nodes in terms of energy resources, processing and communication range, the cluster-based protocols should be compatible with these constraints in either the setup state or steady data transmission state. With focus on these constraints, we classify routing protocols according to their objectives and methods towards addressing the shortcomings of clustering process on each stage of cluster head selection, cluster formation, data aggregation and data communication. We summarize the techniques and methods used in these categories, while the weakness and strength of each protocol is pointed out in details. Furthermore, taxonomy of the protocols in each phase is given to provide a deeper understanding of current clustering approaches. Ultimately based on the existing research, a summary of the issues and solutions of the attributes and characteristics of clustering approaches and some open research areas in cluster-based routing protocols that can be further pursued are provided. PMID:22969350

  8. Energy-Efficient Cluster Based Routing Protocol in Mobile Ad Hoc Networks Using Network Coding

    Directory of Open Access Journals (Sweden)

    Srinivas Kanakala

    2014-01-01

    Full Text Available In mobile ad hoc networks, all nodes are energy constrained. In such situations, it is important to reduce energy consumption. In this paper, we consider the issues of energy efficient communication in MANETs using network coding. Network coding is an effective method to improve the performance of wireless networks. COPE protocol implements network coding concept to reduce number of transmissions by mixing the packets at intermediate nodes. We incorporate COPE into cluster based routing protocol to further reduce the energy consumption. The proposed energy-efficient coding-aware cluster based routing protocol (ECCRP scheme applies network coding at cluster heads to reduce number of transmissions. We also modify the queue management procedure of COPE protocol to further improve coding opportunities. We also use an energy efficient scheme while selecting the cluster head. It helps to increase the life time of the network. We evaluate the performance of proposed energy efficient cluster based protocol using simulation. Simulation results show that the proposed ECCRP algorithm reduces energy consumption and increases life time of the network.

  9. Microgrid Central Controller Development and Hierarchical Control Implementation in the Intelligent MicroGrid Lab of Aalborg University

    DEFF Research Database (Denmark)

    Meng, Lexuan; Savaghebi, Mehdi; Andrade, Fabio

    2015-01-01

    This paper presents the development of a microgrid central controller in an inverter-based intelligent microgrid (iMG) lab in Aalborg University, Denmark. The iMG lab aims to provide a flexible experimental platform for comprehensive studies of microgrids. The complete control system applied...... in this lab is based on the hierarchical control scheme for microgrids and includes primary, secondary and tertiary control. The structure of the lab, including the lab facilities, configurations and communication network, is first introduced. Primary control loops are developed in MATLAB....../Simulink and compiled to dSPACEs for local control purposes. In order to realize system supervision and proper secondary and tertiary management, a LabVIEW-based microgrid central controller is also developed. The software and hardware schemes are described. An example case is introduced and tested in the iMG lab...

  10. Obesity, Body Image, Depression, and Weight-control Behaviour Among Female University Students in Korea

    OpenAIRE

    Jun, Eun Mi; Choi, Seung Bae

    2014-01-01

    Background: Obesity has become epidemic worldwide and 31.0% of Korean adults are obese. Obesity is the main cause of chronic diseases, such as diabetes, hypertension, cardiac disease, and cancer. The purpose of the study was to examine obesity, body image, depression, and weight-control behaviour among Korean female university students and investigate the differences in body image, depression, and weight-control behaviour with respect to obesity. Methods: This study examined obesity, body ima...

  11. How Universities Can Map Their Way to Smarter Risk and Cost Control

    Science.gov (United States)

    Dickerson, Jane

    2016-01-01

    Faced with operational complexities on par with those of a city, larger colleges and universities have long understood the value of taking a strategic approach to understanding and managing enterprise risks. Personnel dedicated to risk analysis and control at these institutions are tasked with taking a holistic view of the exposures, liabilities…

  12. Food Control and a Citizen Science Approach for Improving Teaching of Genetics in Universities

    Science.gov (United States)

    Borrell, Y. J.; Muñoz-Colmenero, A. M.; Dopico, E.; Miralles, L.; Garcia-Vazquez, E.

    2016-01-01

    A Citizen Science approach was implemented in the laboratory practices of Genetics at the University of Oviedo, related with the engaging topic of Food Control. Real samples of food products consumed by students at home ("students as samplers") were employed as teaching material in three different courses of Genetics during the academic…

  13. Flexible System Integration and Advanced Hierarchical Control Architectures in the Microgrid Research Laboratory of Aalborg University

    DEFF Research Database (Denmark)

    Meng, Lexuan; Hernández, Adriana Carolina Luna; Diaz, Enrique Rodriguez

    2016-01-01

    This paper presents the system integration and hierarchical control implementation in an inverter-based microgrid research laboratory (MGRL) in Aalborg University, Denmark. MGRL aims to provide a flexible experimental platform for comprehensive studies of microgrids. The structure of the laborato...

  14. State University of New York Research Foundation: Controls over Direct Costs. Report 93-S-64.

    Science.gov (United States)

    New York State Office of the Comptroller, Albany. Div. of Management Audit.

    An evaluation was done of the State University of New York (SUNY) Research Foundation's controls over direct expenditures for research and sponsored activities. The Foundation is a private, non-profit educational corporation established to expand the educational mission of SUNY through fund raising, administration of gifts and grants, and…

  15. Achievement report for fiscal 1998. Development of environmentally friendly universal controller; 1998 nendo kankyo taio universal controller no kaihatsu seika hokokusho

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-05-01

    Research and development was carried out for an 'environmentally friendly universal controller (UC)' which would be 'user-friendly and energy-saving' when used with electrical home appliances. An environmentally friendly UC is a remote controller which utilizes an infrared two-way communication function and becomes capable of dealing with any appliance upon downloading remote control information from the appliance involved. Studies were conducted for the development of controller hardware and software therefor and for the development of electrical home appliances to correspond to their specifications. In relation with energy conservation, studies centered about reduction in power consumption while on standby and unnecessary power consumption. As the result, an environmentally friendly UC protocol was newly developed and, based on the protocol, plural numbers of controllers, appliances, and network gateways were tentatively fabricated, and were examined for their function, behavior, and operational interchangeability. Systems aiming at reducing power consumption while on standby and unnecessary power consumption were built by way of experiment, and were checked for performance. It was then concluded that a reduction of several billion kWh might be achieved. (NEDO)

  16. Intervention for hazardous alcohol use and high level of stress in university freshmen: a comparison between an intervention and a control university.

    Science.gov (United States)

    Andersson, Claes; Johnsson, Kent O; Berglund, Mats; Ojehagen, Agneta

    2009-12-11

    The first year of university studies is associated with increased levels of alcohol drinking and stress. This study examines the one-year outcome of both primary and secondary interventions of one alcohol programme and one stress intervention programme at an intervention university in comparison with a control university. At the intervention university all freshmen were offered a primary prevention programme for hazardous alcohol use and stress management and, in addition, those who had high ratings for stress and/or hazardous alcohol use were offered a secondary intervention programme for alcohol consumption and/or stress management. Freshmen still attending the two universities one year later responded to follow-up questionnaires. The primary alcohol and stress interventions were associated with lower alcohol expectancies and mental symptoms, but no differences in AUDIT scores (-0.2, CI 95% -0.5 to 0.1), estimated blood alcohol concentrations or stress in comparison to freshmen at the control university. The secondary alcohol interventions were associated with decreased AUDIT (-1.1, CI 95% -2.0 to -0.2) as well as alcohol expectancies, blood alcohol concentrations, stress and mental symptoms in comparison to high-risk freshmen at the control university. The secondary stress interventions were associated with decreased mental symptoms and alcohol expectancies, but not stress, AUDIT scores (-0.6, CI 95% -1.4 to 0.2) and blood alcohol concentrations in comparison to high-risk freshmen at the control university. This study suggests that both primary and secondary alcohol and stress interventions have 1-year effects in university freshmen and could be implemented in university settings.

  17. Management of Energy Consumption on Cluster Based Routing Protocol for MANET

    Science.gov (United States)

    Hosseini-Seno, Seyed-Amin; Wan, Tat-Chee; Budiarto, Rahmat; Yamada, Masashi

    The usage of light-weight mobile devices is increasing rapidly, leading to demand for more telecommunication services. Consequently, mobile ad hoc networks and their applications have become feasible with the proliferation of light-weight mobile devices. Many protocols have been developed to handle service discovery and routing in ad hoc networks. However, the majority of them did not consider one critical aspect of this type of network, which is the limited of available energy in each node. Cluster Based Routing Protocol (CBRP) is a robust/scalable routing protocol for Mobile Ad hoc Networks (MANETs) and superior to existing protocols such as Ad hoc On-demand Distance Vector (AODV) in terms of throughput and overhead. Therefore, based on this strength, methods to increase the efficiency of energy usage are incorporated into CBRP in this work. In order to increase the stability (in term of life-time) of the network and to decrease the energy consumption of inter-cluster gateway nodes, an Enhanced Gateway Cluster Based Routing Protocol (EGCBRP) is proposed. Three methods have been introduced by EGCBRP as enhancements to the CBRP: improving the election of cluster Heads (CHs) in CBRP which is based on the maximum available energy level, implementing load balancing for inter-cluster traffic using multiple gateways, and implementing sleep state for gateway nodes to further save the energy. Furthermore, we propose an Energy Efficient Cluster Based Routing Protocol (EECBRP) which extends the EGCBRP sleep state concept into all idle member nodes, excluding the active nodes in all clusters. The experiment results show that the EGCBRP decreases the overall energy consumption of the gateway nodes up to 10% and the EECBRP reduces the energy consumption of the member nodes up to 60%, both of which in turn contribute to stabilizing the network.

  18. An Integrated Intrusion Detection Model of Cluster-Based Wireless Sensor Network.

    Science.gov (United States)

    Sun, Xuemei; Yan, Bo; Zhang, Xinzhong; Rong, Chuitian

    2015-01-01

    Considering wireless sensor network characteristics, this paper combines anomaly and mis-use detection and proposes an integrated detection model of cluster-based wireless sensor network, aiming at enhancing detection rate and reducing false rate. Adaboost algorithm with hierarchical structures is used for anomaly detection of sensor nodes, cluster-head nodes and Sink nodes. Cultural-Algorithm and Artificial-Fish-Swarm-Algorithm optimized Back Propagation is applied to mis-use detection of Sink node. Plenty of simulation demonstrates that this integrated model has a strong performance of intrusion detection.

  19. Construction and application of Red5 cluster based on OpenStack

    Science.gov (United States)

    Wang, Jiaqing; Song, Jianxin

    2017-08-01

    With the application and development of cloud computing technology in various fields, the resource utilization rate of the data center has been improved obviously, and the system based on cloud computing platform has also improved the expansibility and stability. In the traditional way, Red5 cluster resource utilization is low and the system stability is poor. This paper uses cloud computing to efficiently calculate the resource allocation ability, and builds a Red5 server cluster based on OpenStack. Multimedia applications can be published to the Red5 cloud server cluster. The system achieves the flexible construction of computing resources, but also greatly improves the stability of the cluster and service efficiency.

  20. A Novel Efficient Cluster-Based MLSE Equalizer for Satellite Communication Channels with -QAM Signaling

    Directory of Open Access Journals (Sweden)

    Dalakas Vassilis

    2006-01-01

    Full Text Available In satellites, nonlinear amplifiers used near saturation severely distort the transmitted signal and cause difficulties in its reception. Nevertheless, the nonlinearities introduced by memoryless bandpass amplifiers preserve the symmetries of the -ary quadrature amplitude modulation ( -QAM constellation. In this paper, a cluster-based sequence equalizer (CBSE that takes advantage of these symmetries is presented. The proposed equalizer exhibits enhanced performance compared to other techniques, including the conventional linear transversal equalizer, Volterra equalizers, and RBF network equalizers. Moreover, this gain in performance is obtained at a substantially lower computational cost.

  1. Cluster based on sequence comparison of homologous proteins of 95 organism species - Gclust Server | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available List Contact us Gclust Server Cluster based on sequence comparison of homologous proteins of 95 organism spe...cies Data detail Data name Cluster based on sequence comparison of homologous proteins of 95 organism specie...istory of This Database Site Policy | Contact Us Cluster based on sequence compariso

  2. A survey of energy conservation mechanisms for dynamic cluster based wireless sensor networks

    International Nuclear Information System (INIS)

    Enam, R.N.; Tahir, M.; Ahmed, S.; Qureshi, R.

    2018-01-01

    WSN (Wireless Sensor Network) is an emerging technology that has unlimited potential for numerous application areas including military, crisis management, environmental, transportation, medical, home/ city automations and smart spaces. But energy constrained nature of WSNs necessitates that their architecture and communicating protocols to be designed in an energy aware manner. Sensor data collection through clustering mechanisms has become a common strategy in WSN. This paper presents a survey report on the major perspectives with which energy conservation mechanisms has been proposed in dynamic cluster based WSNs so far. All the solutions discussed in this paper focus on the cluster based protocols only.We have covered a vast scale of existing energy efficient protocols and have categorized them in six categories. In the beginning of this paper the fundamentals of the energy constraint issues of WSNs have been discussed and an overview of the causes of energy consumptions at all layers of WSN has been given. Later in this paper several previously proposed energy efficient protocols of WSNs are presented. (author)

  3. Developing a Clustering-Based Empirical Bayes Analysis Method for Hotspot Identification

    Directory of Open Access Journals (Sweden)

    Yajie Zou

    2017-01-01

    Full Text Available Hotspot identification (HSID is a critical part of network-wide safety evaluations. Typical methods for ranking sites are often rooted in using the Empirical Bayes (EB method to estimate safety from both observed crash records and predicted crash frequency based on similar sites. The performance of the EB method is highly related to the selection of a reference group of sites (i.e., roadway segments or intersections similar to the target site from which safety performance functions (SPF used to predict crash frequency will be developed. As crash data often contain underlying heterogeneity that, in essence, can make them appear to be generated from distinct subpopulations, methods are needed to select similar sites in a principled manner. To overcome this possible heterogeneity problem, EB-based HSID methods that use common clustering methodologies (e.g., mixture models, K-means, and hierarchical clustering to select “similar” sites for building SPFs are developed. Performance of the clustering-based EB methods is then compared using real crash data. Here, HSID results, when computed on Texas undivided rural highway cash data, suggest that all three clustering-based EB analysis methods are preferred over the conventional statistical methods. Thus, properly classifying the road segments for heterogeneous crash data can further improve HSID accuracy.

  4. Improving cluster-based missing value estimation of DNA microarray data.

    Science.gov (United States)

    Brás, Lígia P; Menezes, José C

    2007-06-01

    We present a modification of the weighted K-nearest neighbours imputation method (KNNimpute) for missing values (MVs) estimation in microarray data based on the reuse of estimated data. The method was called iterative KNN imputation (IKNNimpute) as the estimation is performed iteratively using the recently estimated values. The estimation efficiency of IKNNimpute was assessed under different conditions (data type, fraction and structure of missing data) by the normalized root mean squared error (NRMSE) and the correlation coefficients between estimated and true values, and compared with that of other cluster-based estimation methods (KNNimpute and sequential KNN). We further investigated the influence of imputation on the detection of differentially expressed genes using SAM by examining the differentially expressed genes that are lost after MV estimation. The performance measures give consistent results, indicating that the iterative procedure of IKNNimpute can enhance the prediction ability of cluster-based methods in the presence of high missing rates, in non-time series experiments and in data sets comprising both time series and non-time series data, because the information of the genes having MVs is used more efficiently and the iterative procedure allows refining the MV estimates. More importantly, IKNN has a smaller detrimental effect on the detection of differentially expressed genes.

  5. Improving local clustering based top-L link prediction methods via asymmetric link clustering information

    Science.gov (United States)

    Wu, Zhihao; Lin, Youfang; Zhao, Yiji; Yan, Hongyan

    2018-02-01

    Networks can represent a wide range of complex systems, such as social, biological and technological systems. Link prediction is one of the most important problems in network analysis, and has attracted much research interest recently. Many link prediction methods have been proposed to solve this problem with various techniques. We can note that clustering information plays an important role in solving the link prediction problem. In previous literatures, we find node clustering coefficient appears frequently in many link prediction methods. However, node clustering coefficient is limited to describe the role of a common-neighbor in different local networks, because it cannot distinguish different clustering abilities of a node to different node pairs. In this paper, we shift our focus from nodes to links, and propose the concept of asymmetric link clustering (ALC) coefficient. Further, we improve three node clustering based link prediction methods via the concept of ALC. The experimental results demonstrate that ALC-based methods outperform node clustering based methods, especially achieving remarkable improvements on food web, hamster friendship and Internet networks. Besides, comparing with other methods, the performance of ALC-based methods are very stable in both globalized and personalized top-L link prediction tasks.

  6. A Survey of Energy Conservation Mechanisms for Dynamic Cluster Based Wireless Sensor Networks

    Directory of Open Access Journals (Sweden)

    Rabia Noor Enam

    2018-04-01

    Full Text Available WSN (Wireless Sensor Network is an emerging technology that has unlimited potential for numerous application areas including military, crisis management, environmental, transportation, medical, home/ city automations and smart spaces. But energy constrained nature of WSNs necessitates that their architecture and communicating protocols to be designed in an energy aware manner. Sensor data collection through clustering mechanisms has become a common strategy in WSN. This paper presents a survey report on the major perspectives with which energy conservation mechanisms has been proposed in dynamic cluster based WSNs so far. All the solutions discussed in this paper focus on the cluster based protocols only.We have covered a vast scale of existing energy efficient protocols and have categorized them in six categories. In the beginning of this paper the fundamentals of the energy constraint issues of WSNs have been discussed and an overview of the causes of energy consumptions at all layers of WSN has been given. Later in this paper several previously proposed energy efficient protocols of WSNs are presented.

  7. Cluster-based Data Gathering in Long-Strip Wireless Sensor Networks

    Directory of Open Access Journals (Sweden)

    FANG, W.

    2012-02-01

    Full Text Available This paper investigates a special class of wireless sensor networks that are different from traditional ones in that the sensor nodes in this class of networks are deployed along narrowly elongated geographical areas and form a long-strip topology. According to hardware capabilities of current sensor nodes, a cluster-based protocol for reliable and efficient data gathering in long-strip wireless sensor networks (LSWSN is proposed. A well-distributed cluster-based architecture is first formed in the whole network through contention-based cluster head election. Cluster heads are responsible for coordination among the nodes within their clusters and aggregation of their sensory data, as well as transmission the data to the sink node on behalf of their own clusters. The intra-cluster coordination is based on the traditional TDMA schedule, in which the inter-cluster interference caused by the border nodes is solved by the multi-channel communication technique. The cluster reporting is based on the CSMA contention, in which a connected overlay network is formed by relay nodes to forward the data from the cluster heads through multi-hops to the sink node. The relay nodes are non-uniformly deployed to resolve the energy-hole problem which is extremely serious in the LSWSN. Extensive simulation results illuminate the distinguished performance of the proposed protocol.

  8. New control and safety rod unit for the training reactor of the Dresden Technical University

    International Nuclear Information System (INIS)

    Adam, E.; Schab, J.; Knorr, J.

    1983-01-01

    The extension of the experimental training of students at the training reactor AKR of the Dresden Technical University requires the reconstruction of the reactor with a new control and safety rod unit. The specific conditions at the AKR led to a new variant. Results of preliminary experiments, design and mode of operation of the first unit as well as hitherto gained operation experiences are presented. (author)

  9. ASSESSMENT OF PROFESSIONAL SKILLS OF STUDENTS IN IT-BASED CONTROLLED EDUCATIONAL ENVIRONMENT OF A UNIVERSITY

    Directory of Open Access Journals (Sweden)

    Evgeiy Nikolaevich Boyarov

    2013-08-01

    Full Text Available The article looks at the problem of estimating professional skills of students, the process of their building and assessing their level in IT-based controlled educational environment of a university. The author presents research findings of professional skills level of future educational professionals in the field of Life Safety[1] based on their academic results.Goal: to develop and show by experiments efficiency of building professional skills of students in IT-based controlled educational environment of a university.Results: increasing the level of professional skills in IT-based controlled educational environment of a university.Scope of application of results: field of higher professional education.DOI: http://dx.doi.org/10.12731/2218-7405-2013-7-1[1] Life Safety or Fundamentals of Health and Safety is a secondary school subject, which involves teaching basic rules of how to act in dangerous situations in everyday life (natural disasters, fires, terrorist attacks, etc., provide first aid, etc.

  10. Opportunism of University Lecturers As a Way to Adaptate the External Control Activities Strengthening

    Directory of Open Access Journals (Sweden)

    Margarita V. Kurbatova

    2016-09-01

    Full Text Available At the present the Russian government is undertaking a higher education system reform actively introducing management tools of new public management. Implementation of these instruments is accompanied by the transformation of universities in the customer-oriented organizations and lecturers into the employees. There is a substitution of incentives based on the existing informal norms of academic standards and reputation mechanisms of control to the incentives based on the quasi-market conditions artificially generated by the state and corresponding to the mechanisms of external assessment and monitoring. Practices changing used by lecturers to follow their interests is the inevitable result and more widespread form is opportunism. The purpose of the paper is to characterize the forms of manifestation of opportunistic behavior of university lecturers emerging as a result of changes in the nature of lecturers’ contract in the conditions of university governance managerisation. The main forms of lecturers’ opportunism and assesses of its degree based on data analysis of the two waves of the expert survey on the problems of assessing the impact of implementation mechanisms of external evaluation of their activities and the questionnaire survey of lecturers more than 40 Russian universities of different status are described as well as lecturers’ strategy of behavior, which are presented as a combination of different severity practices used by opportunistic behavior is highlighted. It shows the relation between the non-observance of academic freedom and the choice of lecturers’ strategies conduct. It is proved that the lecturers of Russian universities depending on the accumulated stocks of human and social capital as well as the resource capacity of separate universities are choosing different strategies to follow their own interests, which differ in the level of shirking in different areas of activity. All this is accompanied by

  11. Universally applicable design concept of stably controlling an HTGR-hydrogen production system

    International Nuclear Information System (INIS)

    Hada, Kazuhiko; Shibata, Taiju; Nishihara, Tetsuo; Shiozawa, Shusaku

    1996-01-01

    An HTGR-hydrogen production system should be designed to have stable controllability because of a large difference in thermal dynamics between reactor and hydrogen production system and such a control design concept should be universally applicable to a variety of hydrogen production processes by the use of nuclear heat from HTGR. A transient response analysis of an HTGR-steam reforming hydrogen production system showed that a steam generator installed in a helium circuit for cooling the nuclear reactor provides stable controllability of the total system, resulting in avoiding a reactor scram. A survey of control design-related characteristics among several hydrogen production processes revealed the similarity of endothermic chemical reactions by the use of high temperature heat and that steam is required as a reactant of the endothermic reaction or for preheating a reactant. Based on these findings, a system design concept with stable controllability and universal applicability was proposed to install a steam generator as a downstream cooler of an endothermic reactor in the helium circuit of an HTGR-hydrogen production system. (author)

  12. Appraisal and control of sexual and non-sexual intrusive thoughts in university students.

    Science.gov (United States)

    Clark, D A; Purdon, C; Byers, E S

    2000-05-01

    This study examined differences in the appraisal and thought control strategies associated with the perceived control of unwanted sexual and non-sexual intrusive thoughts. Eleven appraisal dimensions, subjective physiological arousal and 10 thought control strategies were measured in 171 university students who were administered the Revised Obsessive Intrusions Inventory-Sex Version, a self-report measure of unwanted intrusive thoughts. Thought-action fusion (TAF) likelihood was a significant unique predictor of the perceived controllability of respondents' most upsetting sexual and non-sexual intrusive thought. Moreover greater subjective physiological arousal was a significant predictor of reduced control over sexual intrusions, whereas worry that one might act on an intrusive thought and greater effort to control the intrusion were significant unique predictors of the control of non-sexual intrusive thoughts. Various thought control strategies were more often used in response to non-sexual than sexual cognitions. The results are discussed in terms of the differential role of various appraisal processes in the control of unwanted sexual and non-sexual thoughts.

  13. Development and implementation of an automatic control algorithm for the University of Utah nuclear reactor

    International Nuclear Information System (INIS)

    Crawford, Kevan C.; Sandquist, Gary M.

    1990-01-01

    The emphasis of this work is the development and implementation of an automatic control philosophy which uses the classical operational philosophies as a foundation. Three control algorithms were derived based on various simplifying assumptions. Two of the algorithms were tested in computer simulations. After realizing the insensitivity of the system to the simplifications, the most reduced form of the algorithms was implemented on the computer control system at the University of Utah (UNEL). Since the operational philosophies have a higher priority than automatic control, they determine when automatic control may be utilized. Unlike the operational philosophies, automatic control is not concerned with component failures. The object of this philosophy is the movement of absorber rods to produce a requested power. When the current power level is compared to the requested power level, an error may be detected which will require the movement of a control rod to correct the error. The automatic control philosophy adds another dimension to the classical operational philosophies. Using this philosophy, normal operator interactions with the computer would be limited only to run parameters such as power, period, and run time. This eliminates subjective judgements, objective judgements under pressure, and distractions to the operator and insures the reactor will be operated in a safe and controlled manner as well as providing reproducible operations

  14. Combining a Multi-Agent System and Communication Middleware for Smart Home Control: A Universal Control Platform Architecture

    Science.gov (United States)

    Zheng, Song; Zhang, Qi; Zheng, Rong; Huang, Bi-Qin; Song, Yi-Lin; Chen, Xin-Chu

    2017-01-01

    In recent years, the smart home field has gained wide attention for its broad application prospects. However, families using smart home systems must usually adopt various heterogeneous smart devices, including sensors and devices, which makes it more difficult to manage and control their home system. How to design a unified control platform to deal with the collaborative control problem of heterogeneous smart devices is one of the greatest challenges in the current smart home field. The main contribution of this paper is to propose a universal smart home control platform architecture (IAPhome) based on a multi-agent system and communication middleware, which shows significant adaptability and advantages in many aspects, including heterogeneous devices connectivity, collaborative control, human-computer interaction and user self-management. The communication middleware is an important foundation to design and implement this architecture which makes it possible to integrate heterogeneous smart devices in a flexible way. A concrete method of applying the multi-agent software technique to solve the integrated control problem of the smart home system is also presented. The proposed platform architecture has been tested in a real smart home environment, and the results indicate that the effectiveness of our approach for solving the collaborative control problem of different smart devices. PMID:28926957

  15. Combining a Multi-Agent System and Communication Middleware for Smart Home Control: A Universal Control Platform Architecture.

    Science.gov (United States)

    Zheng, Song; Zhang, Qi; Zheng, Rong; Huang, Bi-Qin; Song, Yi-Lin; Chen, Xin-Chu

    2017-09-16

    In recent years, the smart home field has gained wide attention for its broad application prospects. However, families using smart home systems must usually adopt various heterogeneous smart devices, including sensors and devices, which makes it more difficult to manage and control their home system. How to design a unified control platform to deal with the collaborative control problem of heterogeneous smart devices is one of the greatest challenges in the current smart home field. The main contribution of this paper is to propose a universal smart home control platform architecture (IAPhome) based on a multi-agent system and communication middleware, which shows significant adaptability and advantages in many aspects, including heterogeneous devices connectivity, collaborative control, human-computer interaction and user self-management. The communication middleware is an important foundation to design and implement this architecture which makes it possible to integrate heterogeneous smart devices in a flexible way. A concrete method of applying the multi-agent software technique to solve the integrated control problem of the smart home system is also presented. The proposed platform architecture has been tested in a real smart home environment, and the results indicate that the effectiveness of our approach for solving the collaborative control problem of different smart devices.

  16. Combining a Multi-Agent System and Communication Middleware for Smart Home Control: A Universal Control Platform Architecture

    Directory of Open Access Journals (Sweden)

    Song Zheng

    2017-09-01

    Full Text Available In recent years, the smart home field has gained wide attention for its broad application prospects. However, families using smart home systems must usually adopt various heterogeneous smart devices, including sensors and devices, which makes it more difficult to manage and control their home system. How to design a unified control platform to deal with the collaborative control problem of heterogeneous smart devices is one of the greatest challenges in the current smart home field. The main contribution of this paper is to propose a universal smart home control platform architecture (IAPhome based on a multi-agent system and communication middleware, which shows significant adaptability and advantages in many aspects, including heterogeneous devices connectivity, collaborative control, human-computer interaction and user self-management. The communication middleware is an important foundation to design and implement this architecture which makes it possible to integrate heterogeneous smart devices in a flexible way. A concrete method of applying the multi-agent software technique to solve the integrated control problem of the smart home system is also presented. The proposed platform architecture has been tested in a real smart home environment, and the results indicate that the effectiveness of our approach for solving the collaborative control problem of different smart devices.

  17. Staff perceptions on pigeon control strategies on the University of South Africa’s Muckleneuk campus

    Directory of Open Access Journals (Sweden)

    Emma Harris

    2017-04-01

    Full Text Available Pigeons are often considered a nuisance in urban environments, leading to the attempted control or eradication of their populations. This study explored the perceptions of 246 staff members employed on the University of South Africa’s Muckleneuk campus to ascertain the extent and nature of the perceived pigeon problem, suggested control methodologies and their anticipated results. The study found that the majority of staff do not consider the pigeons to pose a problem on the campus and that, should control be imposed, humane, non-lethal measures were preferred over eradication. The isolated pigeon-related complaints revealed that the management’s negative perceptions of the pigeons were not representative of staff members in general. The study concludes that a comprehensive public participation process is a necessary and integral part of the development and implementation of a sustainable and efficient pigeon control plan.

  18. Maximization of the Supportable Number of Sensors in QoS-Aware Cluster-Based Underwater Acoustic Sensor Networks

    Directory of Open Access Journals (Sweden)

    Thi-Tham Nguyen

    2014-03-01

    Full Text Available This paper proposes a practical low-complexity MAC (medium access control scheme for quality of service (QoS-aware and cluster-based underwater acoustic sensor networks (UASN, in which the provision of differentiated QoS is required. In such a network, underwater sensors (U-sensor in a cluster are divided into several classes, each of which has a different QoS requirement. The major problem considered in this paper is the maximization of the number of nodes that a cluster can accommodate while still providing the required QoS for each class in terms of the PDR (packet delivery ratio. In order to address the problem, we first estimate the packet delivery probability (PDP and use it to formulate an optimization problem to determine the optimal value of the maximum packet retransmissions for each QoS class. The custom greedy and interior-point algorithms are used to find the optimal solutions, which are verified by extensive simulations. The simulation results show that, by solving the proposed optimization problem, the supportable number of underwater sensor nodes can be maximized while satisfying the QoS requirements for each class.

  19. FUZZY CLUSTERING BASED BAYESIAN FRAMEWORK TO PREDICT MENTAL HEALTH PROBLEMS AMONG CHILDREN

    Directory of Open Access Journals (Sweden)

    M R Sumathi

    2017-04-01

    Full Text Available According to World Health Organization, 10-20% of children and adolescents all over the world are experiencing mental disorders. Correct diagnosis of mental disorders at an early stage improves the quality of life of children and avoids complicated problems. Various expert systems using artificial intelligence techniques have been developed for diagnosing mental disorders like Schizophrenia, Depression, Dementia, etc. This study focuses on predicting basic mental health problems of children, like Attention problem, Anxiety problem, Developmental delay, Attention Deficit Hyperactivity Disorder (ADHD, Pervasive Developmental Disorder(PDD, etc. using the machine learning techniques, Bayesian Networks and Fuzzy clustering. The focus of the article is on learning the Bayesian network structure using a novel Fuzzy Clustering Based Bayesian network structure learning framework. The performance of the proposed framework was compared with the other existing algorithms and the experimental results have shown that the proposed framework performs better than the earlier algorithms.

  20. Application of a clustering-based peak alignment algorithm to analyze various DNA fingerprinting data.

    Science.gov (United States)

    Ishii, Satoshi; Kadota, Koji; Senoo, Keishi

    2009-09-01

    DNA fingerprinting analysis such as amplified ribosomal DNA restriction analysis (ARDRA), repetitive extragenic palindromic PCR (rep-PCR), ribosomal intergenic spacer analysis (RISA), and denaturing gradient gel electrophoresis (DGGE) are frequently used in various fields of microbiology. The major difficulty in DNA fingerprinting data analysis is the alignment of multiple peak sets. We report here an R program for a clustering-based peak alignment algorithm, and its application to analyze various DNA fingerprinting data, such as ARDRA, rep-PCR, RISA, and DGGE data. The results obtained by our clustering algorithm and by BioNumerics software showed high similarity. Since several R packages have been established to statistically analyze various biological data, the distance matrix obtained by our R program can be used for subsequent statistical analyses, some of which were not previously performed but are useful in DNA fingerprinting studies.

  1. Cluster-Based Adaptation Using Density Forest for HMM Phone Recognition

    DEFF Research Database (Denmark)

    Abou-Zleikha, Mohamed; Tan, Zheng-Hua; Christensen, Mads Græsbøll

    2014-01-01

    The dissimilarity between the training and test data in speech recognition systems is known to have a considerable effect on the recognition accuracy. To solve this problem, we use density forest to cluster the data and use maximum a posteriori (MAP) method to build a cluster-based adapted Gaussian...... mixture models (GMMs) in HMM speech recognition. Specifically, a set of bagged versions of the training data for each state in the HMM is generated, and each of these versions is used to generate one GMM and one tree in the density forest. Thereafter, an acoustic model forest is built by replacing...... the data of each leaf (cluster) in each tree with the corresponding GMM adapted by the leaf data using the MAP method. The results show that the proposed approach achieves 3:8% (absolute) lower phone error rate compared with the standard HMM/GMM and 0:8% (absolute) lower PER compared with bagged HMM/GMM....

  2. A Distributed Algorithm for the Cluster-Based Outlier Detection Using Unsupervised Extreme Learning Machines

    Directory of Open Access Journals (Sweden)

    Xite Wang

    2017-01-01

    Full Text Available Outlier detection is an important data mining task, whose target is to find the abnormal or atypical objects from a given dataset. The techniques for detecting outliers have a lot of applications, such as credit card fraud detection and environment monitoring. Our previous work proposed the Cluster-Based (CB outlier and gave a centralized method using unsupervised extreme learning machines to compute CB outliers. In this paper, we propose a new distributed algorithm for the CB outlier detection (DACB. On the master node, we collect a small number of points from the slave nodes to obtain a threshold. On each slave node, we design a new filtering method that can use the threshold to efficiently speed up the computation. Furthermore, we also propose a ranking method to optimize the order of cluster scanning. At last, the effectiveness and efficiency of the proposed approaches are verified through a plenty of simulation experiments.

  3. Researches on the Security of Cluster-based Communication Protocol for Wireless Sensor Networks

    Directory of Open Access Journals (Sweden)

    Yanhong Sun

    2014-08-01

    Full Text Available Along with the in-depth application of sensor networks, the security issues have gradually become the bottleneck of wireless sensor applications. To provide a solution for security scheme is a common concern not only of researchers but also of providers, integrators and users of wireless sensor networks. Based on this demand, this paper focuses on the research of strengthening the security of cluster-based wireless sensor networks. Based on the systematic analysis of the clustering protocol and its security enhancement scheme, the paper introduces the broadcast authentication scheme, and proposes an SA-LEACH network security enhancement protocol. The performance analysis and simulation experiments prove that the protocol consumes less energy with the same security requirements, and when the base station is comparatively far from the network deployment area, it is more advantageous in terms of energy consumption and t more suitable for wireless sensor networks.

  4. Cluster-Based Multipolling Sequencing Algorithm for Collecting RFID Data in Wireless LANs

    Science.gov (United States)

    Choi, Woo-Yong; Chatterjee, Mainak

    2015-03-01

    With the growing use of RFID (Radio Frequency Identification), it is becoming important to devise ways to read RFID tags in real time. Access points (APs) of IEEE 802.11-based wireless Local Area Networks (LANs) are being integrated with RFID networks that can efficiently collect real-time RFID data. Several schemes, such as multipolling methods based on the dynamic search algorithm and random sequencing, have been proposed. However, as the number of RFID readers associated with an AP increases, it becomes difficult for the dynamic search algorithm to derive the multipolling sequence in real time. Though multipolling methods can eliminate the polling overhead, we still need to enhance the performance of the multipolling methods based on random sequencing. To that extent, we propose a real-time cluster-based multipolling sequencing algorithm that drastically eliminates more than 90% of the polling overhead, particularly so when the dynamic search algorithm fails to derive the multipolling sequence in real time.

  5. Cluster-based spectrum sensing for cognitive radios with imperfect channel to cluster-head

    KAUST Repository

    Ben Ghorbel, Mahdi

    2012-04-01

    Spectrum sensing is considered as the first and main step for cognitive radio systems to achieve an efficient use of spectrum. Cooperation and clustering among cognitive radio users are two techniques that can be employed with spectrum sensing in order to improve the sensing performance by reducing miss-detection and false alarm. In this paper, within the framework of a clustering-based cooperative spectrum sensing scheme, we study the effect of errors in transmitting the local decisions from the secondary users to the cluster heads (or the fusion center), while considering non-identical channel conditions between the secondary users. Closed-form expressions for the global probabilities of detection and false alarm at the cluster head are derived. © 2012 IEEE.

  6. Cluster-based spectrum sensing for cognitive radios with imperfect channel to cluster-head

    KAUST Repository

    Ben Ghorbel, Mahdi; Nam, Haewoon; Alouini, Mohamed-Slim

    2012-01-01

    Spectrum sensing is considered as the first and main step for cognitive radio systems to achieve an efficient use of spectrum. Cooperation and clustering among cognitive radio users are two techniques that can be employed with spectrum sensing in order to improve the sensing performance by reducing miss-detection and false alarm. In this paper, within the framework of a clustering-based cooperative spectrum sensing scheme, we study the effect of errors in transmitting the local decisions from the secondary users to the cluster heads (or the fusion center), while considering non-identical channel conditions between the secondary users. Closed-form expressions for the global probabilities of detection and false alarm at the cluster head are derived. © 2012 IEEE.

  7. A small Internet controllable observatory for research and education at the University of North Dakota

    Science.gov (United States)

    Hardersen, P. S.; de Silva, S.; Reddy, V.; Cui, P.; Kumar, S.; Gaffey, M. J.

    2006-06-01

    One of the challenges in astronomy education today is to introduce college students to the real-world practice and science of observational astronomy. Along with a good theoretical background, college students can gain an earlier, deeper understanding of the astronomy profession through direct observational and data reduction experience. However, building and managing a modest observatory is still too costly for many colleges and universities. Fortunately, advances in commercial astronomical hardware and software now allow universities to build and operate small Internet controllable observatories for a modest investment. The advantages of an Internet observatory include: 1) remote operation from a comfortable location, 2) immediate data access, 3) telescope control via a web browser, and 4) allowing both on-campus and distance education students the ability to conduct a variety of observing projects. Internet capabilities vastly expand the number of students who will be able to use the observatory, thus exposing them to astronomy as a science and as a potential career. In September 2005, the University of North Dakota (UND) Department of Space Studies began operating a small, recently renovated Internet controllable observatory. Housed within a roll-off roof 10 miles west of UND, the observatory includes a Meade 16-inch, f/10 Schmidt-Cassegrain telescope, an SBIG STL-6303e CCD with broadband filters, ACP observatory control software, focuser, and associated equipment. The observatory cost \\25,000 to build in 1996; 2005 renovation costs total \\28,000. An observatory operator prepares the telescope for use each night. Through remote operation, the roof is opened and the telescope/CCD power is turned on. The telescope is then aligned and focused before allowing students to access the observatory. Students communicate with the observatory operator via an online chat room and via telephone, if necessary, to answer questions and resolve any problems. Additional

  8. Multiscale deep drawing analysis of dual-phase steels using grain cluster-based RGC scheme

    International Nuclear Information System (INIS)

    Tjahjanto, D D; Eisenlohr, P; Roters, F

    2015-01-01

    Multiscale modelling and simulation play an important role in sheet metal forming analysis, since the overall material responses at macroscopic engineering scales, e.g. formability and anisotropy, are strongly influenced by microstructural properties, such as grain size and crystal orientations (texture). In the present report, multiscale analysis on deep drawing of dual-phase steels is performed using an efficient grain cluster-based homogenization scheme.The homogenization scheme, called relaxed grain cluster (RGC), is based on a generalization of the grain cluster concept, where a (representative) volume element consists of p  ×  q  ×  r (hexahedral) grains. In this scheme, variation of the strain or deformation of individual grains is taken into account through the, so-called, interface relaxation, which is formulated within an energy minimization framework. An interfacial penalty term is introduced into the energy minimization framework in order to account for the effects of grain boundaries.The grain cluster-based homogenization scheme has been implemented and incorporated into the advanced material simulation platform DAMASK, which purposes to bridge the macroscale boundary value problems associated with deep drawing analysis to the micromechanical constitutive law, e.g. crystal plasticity model. Standard Lankford anisotropy tests are performed to validate the model parameters prior to the deep drawing analysis. Model predictions for the deep drawing simulations are analyzed and compared to the corresponding experimental data. The result shows that the predictions of the model are in a very good agreement with the experimental measurement. (paper)

  9. Optimal design of cluster-based ad-hoc networks using probabilistic solution discovery

    International Nuclear Information System (INIS)

    Cook, Jason L.; Ramirez-Marquez, Jose Emmanuel

    2009-01-01

    The reliability of ad-hoc networks is gaining popularity in two areas: as a topic of academic interest and as a key performance parameter for defense systems employing this type of network. The ad-hoc network is dynamic and scalable and these descriptions are what attract its users. However, these descriptions are also synonymous for undefined and unpredictable when considering the impacts to the reliability of the system. The configuration of an ad-hoc network changes continuously and this fact implies that no single mathematical expression or graphical depiction can describe the system reliability-wise. Previous research has used mobility and stochastic models to address this challenge successfully. In this paper, the authors leverage the stochastic approach and build upon it a probabilistic solution discovery (PSD) algorithm to optimize the topology for a cluster-based mobile ad-hoc wireless network (MAWN). Specifically, the membership of nodes within the back-bone network or networks will be assigned in such as way as to maximize reliability subject to a constraint on cost. The constraint may also be considered as a non-monetary cost, such as weight, volume, power, or the like. When a cost is assigned to each component, a maximum cost threshold is assigned to the network, and the method is run; the result is an optimized allocation of the radios enabling back-bone network(s) to provide the most reliable network possible without exceeding the allowable cost. The method is intended for use directly as part of the architectural design process of a cluster-based MAWN to efficiently determine an optimal or near-optimal design solution. It is capable of optimizing the topology based upon all-terminal reliability (ATR), all-operating terminal reliability (AoTR), or two-terminal reliability (2TR)

  10. Life expectancy for the University of Utah beagle colony and selection of a control group

    International Nuclear Information System (INIS)

    Atherton, D.R.; Stevens, W.; Bruenger, F.W.; Woodbury, L.; Stover, B.J.; Smith, J.M.; Wrenn, M.E.

    1986-01-01

    In the internal-emitters toxicity program at the University of Utah Radiobiology Laboratory, each experimental group carries its own specific control cohort, which is the same size as most of the individual experimental cohorts. Variations in average lifetime are observed among individual control cohorts. This may be due to external causes, genetic variances such as the occurrence of epileptic syndromes, or changes such as those that result from improved medical core or husbandry. The Stover-Eyring method was used to eliminate from control and experimental cohorts those dogs with specific diseases such as epilepsy - dogs that were at risk for too short a time for a later pathological response to occur. By the use of conventional statistical techniques, it ws shown to be reasonable to pool individual control cohorts into a much larger selected cohort that provided greater precision in the estimate of control survival and thus a more sensitive basis for the estimation of the relative life shortening in the experimental groups. The analysis suggested that control groups could be combined, and a control population of 114 beagles was proposed. Their average lifespan was 4926 +- 849 days, and the time when half the animals had died was 5000 days. 3 refs., 2 figs., 5 tabs

  11. Prolonged outbreak of Serratia marcescens in Tartu University Hospital: a case-control study.

    Science.gov (United States)

    Adamson, Vivika; Mitt, Piret; Pisarev, Heti; Metsvaht, Tuuli; Telling, Kaidi; Naaber, Paul; Maimets, Matti

    2012-10-31

    The aim of our study was to investigate and control an outbreak and identify risk factors for colonization and infection with Serratia marcescens in two departments in Tartu University Hospital. The retrospective case-control study was conducted from July 2005 to December 2006. Molecular typing by pulsed field gel electrophoresis was used to confirm the relatedness of Serratia marcescens strains. Samples from the environment and from the hands of personnel were cultured. The outbreak involved 210 patients, 61 (29%) developed an infection, among them 16 were invasive infections. Multivariate analysis identified gestational age, arterial catheter use and antibiotic treatment as independent risk factors for colonization and infection with Serratia marcescens. Molecular typing was performed on 83 Serratia marcescens strains, 81 of them were identical and 2 strains were different. Given the occasionally severe consequences of Serratia marcescens in infants, early implementation of aggressive infection control measures involving patients and mothers as well as the personnel is of utmost importance.

  12. Moscow University race-track microtron control system: ideas and development

    International Nuclear Information System (INIS)

    Chepurnov, A.S.; Gribov, I.V.; Morozov, S.Yu.; Shumakov, A.V.; Zinoviev, S.V.

    1992-01-01

    Moscow University race-track microtron (RTM) control system is a star-shape network of LSI-11 compatible microcomputers. Each of them is connected with RTM systems via CAMAC; optical fiber coupling is also used. Control system software is designed on Pascal-1, supplemented with real time modules and Macro. A unified real time technique and reenterable data acquisition drivers allow to simplify development of control drivers and algorithms. Among the latter three main types are used: DDC methods, those, based on optimization technique and algorithms, applying models of microtron's systems. Man-machine interface is based on concept of the 'world of accelerator'. It supports means to design, within hardware possibilities, various computer images of the RTM. (author)

  13. Food control and a citizen science approach for improving teaching of Genetics in universities.

    Science.gov (United States)

    Borrell, Y J; Muñoz-Colmenero, A M; Dopico, E; Miralles, L; Garcia-Vazquez, E

    2016-09-10

    A Citizen Science approach was implemented in the laboratory practices of Genetics at the University of Oviedo, related with the engaging topic of Food Control. Real samples of food products consumed by students at home (students as samplers) were employed as teaching material in three different courses of Genetics during the academic year 2014-2015: Experimental Methods in Food Production (MBTA) (Master level), and Applied Molecular Biology (BMA) and Conservation Genetics and Breeding (COMGE) (Bachelor/Degree level). Molecular genetics based on PCR amplification of DNA markers was employed for species identification of 22 seafood products in COMGE and MBTA, and for detection of genetically modified (GM) maize from nine products in BMA. In total six seafood products incorrectly labeled (27%), and two undeclared GM maize (22%) were found. A post-Laboratory survey was applied for assessing the efficacy of the approach for improving motivation in the Laboratory Practices of Genetics. Results confirmed that students that worked on their own samples from local markets were significantly more motivated and better evaluated their Genetic laboratory practices than control students (χ(2)  = 12.11 p = 0.033). Our results suggest that citizen science approaches could not be only useful for improving teaching of Genetics in universities but also to incorporate students and citizens as active agents in food control. © 2016 by The International Union of Biochemistry and Molecular Biology, 44(5):450-462, 2016. © 2016 The International Union of Biochemistry and Molecular Biology.

  14. Tobacco use among black South African university students: attitudes, risk awareness and health locus of control

    Directory of Open Access Journals (Sweden)

    K Peltzer

    2001-09-01

    Full Text Available Objectives: To provide data on African/black South African university students’ tobacco use status, belief in the benefits to health of not smoking, risk awareness in terms of knowledge of the links between smoking and disease, health locus of control, value for health, subjective health status and well-being. Design: Cross sectional. Setting: University of the North Subjects: 793 Black University students from non-health courses chosen by random sampling, of these 370 (46.7% were males and 423 (53.3% were females in the age range of 18 to 25 years (M age 21.0 years, SD=3.48. Main Outcome Measures: A measure of smoking, the Multidimensional Health Locus of Control Scale, the Health as a Value Scale, and a measure for subjective health and subjective well-being. Results: The average prevalence of current tobacco use was 15% in men and 1% in women. The proportion of tobacco users who were classified as light users (1-10 per day averaged 10% in men and 1% in women. Age and being male were significantly positively associated with status and frequency of tobacco use. Awareness of the link between smoking and lung cancer was high (93%, but awareness of the role of smoking in heart disease was very low (16%. The importance to health of not smoking was associated with smoking status (non-smoking versus smoking. Overall, 75% of the current smokers stated that they would like to reduce the amount they smoked. Poor subjective health status and low subjective well-being was associated with smoking status. No significant differences were found among non-tobacco users and tobacco users in relation to the three subscales of the Health Locus of Control (Internal, Chance, and Powerful others and Value for health. Conclusion: For about 9% of the male students investigated, a high risk exists to become regular tobacco users for the next 30 years.

  15. Psychological demand and control of the work process of public university servants.

    Science.gov (United States)

    Moura, Denise Cristina Alves de; Greco, Rosangela Maria; Paschoalin, Heloisa Campos; Portela, Luciana Fernandes; Arreguy-Sena, Cristina; Chaoubah, Alfredo

    2018-02-01

    This cross-sectional research aimed to analyze the psychological demand and work control self-reported by the Education Administrative Technicians of a public university. This is a complete sample selection consisting of 833 Education Administrative Technicians who self-completed a questionnaire with questions structured in 2013/2014. A descriptive bivariate analysis was performed with the calculation of psychosocial stress at work, using the Demand-Control Model quadrants categorized as: low-demand work (low-demand and high-control), reference group, passive work (low-demand and low-control), active work (high-demand and high-control), high-demand (high-demand and low-control) - group with the highest exposure. The study complies with all ethical and legal research requirements involving human beings. There was a predominance of the category of workers performing passive work (n = 319, 39.7%), low work demand (n = 274, 34.1%), high work demand (n = 116, 14.4%) and active work (n = 95, 11.8%). There were contributions from the investigation on the health of these workers insofar as they provided a diagnosis of the category. There is a recommendation for such data to support interventions to empower them and retailor jobs.

  16. Evaluation of the COPING parent online universal programme: study protocol for a pilot randomised controlled trial.

    Science.gov (United States)

    Owen, Dawn Adele; Griffith, Nia; Hutchings, Judy

    2017-04-26

    Bangor University, Brigantia Building, College Road, Bangor, LL57 2AS, UK INTRODUCTION: The COPING parent online universal programme is a web-based parenting intervention for parents of children aged 3-8 years with an interest in positive parenting. The programme focuses on strengthening parent-child relationships and encouraging positive child behaviour. This trial will evaluate whether the intervention is effective in increasing the use of positive parenting strategies outlined in the programme using parent report and blind observation measures. This is a pilot randomised controlled trial with intervention and wait-list control conditions. The intervention is a 10-week online parenting programme to promote positive parent-child relations by teaching core social learning theory principles that encourage positive child behaviour, primarily through the use of praise and rewards. Health visitors and school nurses will circulate a recruitment poster to parents of children aged 3-8 years on their current caseloads. Recruitment posters will also be distributed via local primary schools and nurseries. Parents recruited to the trial will be randomised on a 2:1 ratio to intervention or wait-list control conditions (stratified according to child gender and age). The primary outcome measure is positive parenting as measured by a behavioural observation of parent-child interactions using the Dyadic Parent-Child Interaction Coding System. Secondary outcomes include parent report of child behaviour, and self-reported parental sense of competence, parenting behaviour and parental mental health. Data will be collected at baseline and 3 months later (postintervention) for all participants and 6 months postbaseline for the intervention group only. Analysis of covariance will be the main statistical method used. The trial has received ethical approval from the NHS Betsi Cadwaladr University Health Board Ethics Committee (REC) and the School of Psychology, Bangor University REC (15

  17. Radio-Frequency-Controlled Cold Collisions and Universal Properties of Unitary Bose Gases

    Science.gov (United States)

    Ding, Yijue

    This thesis investigates two topics: ultracold atomic collisions in a radio-frequency field and universal properties of a degenerate unitary Bose gas. One interesting point of the unitary Bose gas is that the system has only one length scale, that is, the average interparticle distance. This single parameter determines all properties of the gas, which is called the universality of the system. We first introduce a renormalized contact interaction to extend the validity of the zero-range interaction to large scattering lengths. Then this renormalized interaction is applied to many-body theories to determined those universal relations of the system. From the few-body perspective, we discuss the scattering between atoms in a single-color radio-frequency field. Our motivation is proposing the radio-frequency field as an effective tool to control interactions between cold atoms. Such a technique may be useful in future experiments such as creating phase transitions in spinor condensates. We also discuss the formation of ultracold molecules using radio-freqency fields from a time-dependent approach.

  18. Mobile phone brief intervention applications for risky alcohol use among university students: a randomized controlled study.

    Science.gov (United States)

    Gajecki, Mikael; Berman, Anne H; Sinadinovic, Kristina; Rosendahl, Ingvar; Andersson, Claes

    2014-07-02

    Brief interventions via the internet have been shown to reduce university students' alcohol intake. This study tested two smartphone applications (apps) targeting drinking choices on party occasions, with the goal of reducing problematic alcohol intake among Swedish university students. Students were recruited via e-mails sent to student union members at two universities. Those who gave informed consent, had a smartphone, and showed risky alcohol consumption according to the Alcohol Use Disorders Identification Test (AUDIT) were randomized into three groups. Group 1 had access to the Swedish government alcohol monopoly's app, Promillekoll, offering real-time estimated blood alcohol concentration (eBAC) calculation; Group 2 had access to a web-based app, PartyPlanner, developed by the research group, offering real-time eBAC calculation with planning and follow-up functions; and Group 3 participants were controls. Follow-up was conducted at 7 weeks. Among 28574 students offered participation, 4823 agreed to join; 415 were excluded due to incomplete data, and 1932 fulfilled eligibility criteria for randomization. Attrition was 22.7-39.3 percent, higher among heavier drinkers and highest in Group 2. Self-reported app use was higher in Group 1 (74%) compared to Group 2 (41%). Per-protocol analyses revealed only one significant time-by-group interaction, where Group 1 participants increased the frequency of their drinking occasions compared to controls (p = 0.001). Secondary analyses by gender showed a significant difference among men in Group 1 for frequency of drinking occasions per week (p = 0.001), but not among women. Among all participants, 29 percent showed high-risk drinking, over the recommended weekly drinking levels of 9 (women) and 14 (men) standard glasses. Smartphone apps can make brief interventions available to large numbers of university students. The apps studied using eBAC calculation did not, however, seem to affect alcohol consumption among

  19. The Adoption of Internal Audit as a Governance Control Mechanism in Australian Public Universities--Views from the CEOs

    Science.gov (United States)

    Christopher, Joe

    2012-01-01

    This study draws on the multi-theoretical approach to governance and the views of university chief executive officers (CEOs) to examine the extent to which internal auditing as a control mechanism is adopted in Australian public universities under an environment of change management. The findings highlight negative consequences of change and their…

  20. Standardization of the Self Control and Self-Management Skills Scale (SCMS) on the Student of University of Najran

    Science.gov (United States)

    Al-Smadi, Marwan Saleh; Bani-Abduh, Yahya Mohammed

    2017-01-01

    This study aimed to standardize self-control and self-management skills (SCMS), Mezo 2009 , on students in the university of Najran And to identify the psychometric properties of the scale in the Arab Environment the society of Najran University student by taking a number of Procedures (Validity and reliability of the Scale ) and to get the Arabic…

  1. Universal block diagram based modeling and simulation schemes for fractional-order control systems.

    Science.gov (United States)

    Bai, Lu; Xue, Dingyü

    2017-05-08

    Universal block diagram based schemes are proposed for modeling and simulating the fractional-order control systems in this paper. A fractional operator block in Simulink is designed to evaluate the fractional-order derivative and integral. Based on the block, the fractional-order control systems with zero initial conditions can be modeled conveniently. For modeling the system with nonzero initial conditions, the auxiliary signal is constructed in the compensation scheme. Since the compensation scheme is very complicated, therefore the integrator chain scheme is further proposed to simplify the modeling procedures. The accuracy and effectiveness of the schemes are assessed in the examples, the computation results testify the block diagram scheme is efficient for all Caputo fractional-order ordinary differential equations (FODEs) of any complexity, including the implicit Caputo FODEs. Copyright © 2017 ISA. Published by Elsevier Ltd. All rights reserved.

  2. Controlling cost escalation of healthcare: making universal health coverage sustainable in China

    Science.gov (United States)

    2012-01-01

    An increasingly number of low- and middle-income countries have developed and implemented a national policy towards universal coverage of healthcare for their citizens over the past decade. Among them is China which has expanded its population coverage by health insurance from around 29.7% in 2003 to over 90% at the end of 2010. While both central and local governments in China have significantly increased financial inputs into the two newly established health insurance schemes: new cooperative medical scheme (NCMS) for the rural population, and urban resident basic health insurance (URBMI), the cost of healthcare in China has also been rising rapidly at the annual rate of 17.0%% over the period of the past two decades years. The total health expenditure increased from 74.7 billion Chinese yuan in 1990 to 1998 billion Chinese yuan in 2010, while average health expenditure per capital reached the level of 1490.1 Chinese yuan per person in 2010, rising from 65.4 Chinese yuan per person in 1990. The repaid increased population coverage by government supported health insurance schemes has stimulated a rising use of healthcare, and thus given rise to more pressure on cost control in China. There are many effective measures of supply-side and demand-side cost control in healthcare available. Over the past three decades China had introduced many measures to control demand for health care, via a series of co-payment mechanisms. The paper introduces and discusses new initiatives and measures employed to control cost escalation of healthcare in China, including alternative provider payment methods, reforming drug procurement systems, and strengthening the application of standard clinical paths in treating patients at hospitals, and analyses the impacts of these initiatives and measures. The paper finally proposes ways forward to make universal health coverage in China more sustainable. PMID:22992484

  3. Association between problematic Internet use and impulse control disorders among Iranian university students.

    Science.gov (United States)

    Mazhari, Shahrzad

    2012-05-01

    Previous studies have examined the relationship between problematic Internet use (PIU) with pathological gambling and impulsivity. However, few studies have investigated the association between PIU and other impulse control disorders. This study aimed to assess whether PIU is related to compulsive buying, kleptomania, trichotillomania, intermittent explosive disorder, and pyromania, among a sample of Iranian university students. A cross-sectional study design was used among a random sample of (n=950) university students. Self-reported questionnaires, including demographic, Problematic Internet Use Questionnaire (PIUQ) and Minnesota Impulse Disorders Interview were utilized. The prevalence of PIU was 21.2 percent. Students with diagnosis of either compulsive buying, or intermittent explosive disorder, or pyromania had significantly higher scores on PIUQ compared to the students without the diagnosis. Multivariate regression analyses indicated that in the male gender, the diagnosis of either compulsive buying or intermittent explosive disorder were significant predictors of the risk of the PIU. The results support the proposal that PIU should be considered as a spectrum of impulse control disorder.

  4. Quality Control Review of the PricewaterhouseCoopers LLP FY 2014 Single Audit of Carnegie Mellon University

    Science.gov (United States)

    2015-12-17

    No. DODIG-2016-034 D E C E M B E R 1 7 , 2 0 1 5 Quality Control Review of the PricewaterhouseCoopers LLP FY 2014 Single Audit of Carnegie ...ALEXANDRIA, VIRGINIA 22350-1500 December 17, 2015 Audit Partner PricewaterhouseCoopers LLP Board of Trustees Carnegie Mellon University Director, Sponsored...Projects Accounting Carnegie Mellon University SUBJECT: Quality Control Review of the PricewaterhouseCoopers LLP FY 2014 Single Audit of Carnegie

  5. Knowledge and attitudes of infection prevention and control among health sciences students at University of Namibia.

    Science.gov (United States)

    Ojulong, J; Mitonga, K H; Iipinge, S N

    2013-12-01

    Health Sciences students are exposed early to hospitals and to activities which increase their risk of acquiring infections. Infection control practices are geared towards reduction of occurrence and transmission of infectious diseases. To evaluate knowledge and attitudes of infection prevention and control among Health Science students at University of Namibia. To assess students' knowledge and attitudes regarding infection prevention and control and their sources of information, a self-administered questionnaire was used to look at standard precautions especially hands hygiene. One hundred sixty two students participated in this study of which 31 were medical, 17 were radiography and 114 were nursing students. Medical students had better overall scores (73%) compared to nursing students (66%) and radiology students (61%). There was no significant difference in scores between sexes or location of the high school being either in rural or urban setting. Serious efforts are needed to improve or review curriculum so that health sciences students' knowledge on infection prevention and control is imparted early before they are introduced to the wards.

  6. Analysis and Controller Design of a Universal Bidirectional DC-DC Converter

    Directory of Open Access Journals (Sweden)

    Kou-Bin Liu

    2016-06-01

    Full Text Available In this paper, first the operating principles of a non-isolated universal bidirectional DC-DC converter are studied and analyzed. The presented power converter is capable of operating in all power transferring directions in buck/boost modes. Zero voltage switching can be achieved for all the power switches through proper modulation strategy design, therefore, the presented converter can achieve high efficiency. To further improve the efficiency, the relationship between the phase-shift angle and the overall system efficiency is analyzed in detail, an adaptive phase-shift (APS control method which determines the phase-shift value between gating signals according to the load level is then proposed. As the modulation strategy is a software-based solution, there is no requirement for additional circuits, therefore, it can be implemented easily and instability and noise susceptibility problems can be reduced. To validate the correctness and the effectiveness of the proposed method, a 300 W prototyping circuit is implemented and tested. A low cost dsPIC33FJ16GS502 digital signal controller is adopted in this paper to realize the power flow control, DC-bus voltage regulation and APS control. According to the experimental results, a 12.2% efficiency improvement at light load and 4.0% efficiency improvement at half load can be achieved.

  7. Export Controls: Export-Controlled Technology at Contractor, University, and Federally Funded Research and Development Center Facilities (D-2004-061)

    National Research Council Canada - National Science Library

    2004-01-01

    .... The report discusses the steps DoD needs to take to identify unclassified export-controlled technology and to ensure that DoD contractors, universities, and Federally Funded Research and Development...

  8. Population clustering based on copy number variations detected from next generation sequencing data.

    Science.gov (United States)

    Duan, Junbo; Zhang, Ji-Gang; Wan, Mingxi; Deng, Hong-Wen; Wang, Yu-Ping

    2014-08-01

    Copy number variations (CNVs) can be used as significant bio-markers and next generation sequencing (NGS) provides a high resolution detection of these CNVs. But how to extract features from CNVs and further apply them to genomic studies such as population clustering have become a big challenge. In this paper, we propose a novel method for population clustering based on CNVs from NGS. First, CNVs are extracted from each sample to form a feature matrix. Then, this feature matrix is decomposed into the source matrix and weight matrix with non-negative matrix factorization (NMF). The source matrix consists of common CNVs that are shared by all the samples from the same group, and the weight matrix indicates the corresponding level of CNVs from each sample. Therefore, using NMF of CNVs one can differentiate samples from different ethnic groups, i.e. population clustering. To validate the approach, we applied it to the analysis of both simulation data and two real data set from the 1000 Genomes Project. The results on simulation data demonstrate that the proposed method can recover the true common CNVs with high quality. The results on the first real data analysis show that the proposed method can cluster two family trio with different ancestries into two ethnic groups and the results on the second real data analysis show that the proposed method can be applied to the whole-genome with large sample size consisting of multiple groups. Both results demonstrate the potential of the proposed method for population clustering.

  9. Predictor-Year Subspace Clustering Based Ensemble Prediction of Indian Summer Monsoon

    Directory of Open Access Journals (Sweden)

    Moumita Saha

    2016-01-01

    Full Text Available Forecasting the Indian summer monsoon is a challenging task due to its complex and nonlinear behavior. A large number of global climatic variables with varying interaction patterns over years influence monsoon. Various statistical and neural prediction models have been proposed for forecasting monsoon, but many of them fail to capture variability over years. The skill of predictor variables of monsoon also evolves over time. In this article, we propose a joint-clustering of monsoon years and predictors for understanding and predicting the monsoon. This is achieved by subspace clustering algorithm. It groups the years based on prevailing global climatic condition using statistical clustering technique and subsequently for each such group it identifies significant climatic predictor variables which assist in better prediction. Prediction model is designed to frame individual cluster using random forest of regression tree. Prediction of aggregate and regional monsoon is attempted. Mean absolute error of 5.2% is obtained for forecasting aggregate Indian summer monsoon. Errors in predicting the regional monsoons are also comparable in comparison to the high variation of regional precipitation. Proposed joint-clustering based ensemble model is observed to be superior to existing monsoon prediction models and it also surpasses general nonclustering based prediction models.

  10. Energy Efficient Clustering Based Network Protocol Stack for 3D Airborne Monitoring System

    Directory of Open Access Journals (Sweden)

    Abhishek Joshi

    2017-01-01

    Full Text Available Wireless Sensor Network consists of large number of nodes densely deployed in ad hoc manner. Usually, most of the application areas of WSNs require two-dimensional (2D topology. Various emerging application areas such as airborne networks and underwater wireless sensor networks are usually deployed using three-dimensional (3D network topology. In this paper, a static 3D cluster-based network topology has been proposed for airborne networks. A network protocol stack consisting of various protocols such as TDMA MAC and dynamic routing along with services such as time synchronization, Cluster Head rotation, and power level management has been proposed for this airborne network. The proposed protocol stack has been implemented on the hardware platform consisting of number of TelosB nodes. This 3D airborne network architecture can be used to measure Air Quality Index (AQI in an area. Various parameters of network such as energy consumption, Cluster Head rotation, time synchronization, and Packet Delivery Ratio (PDR have been analyzed. Detailed description of the implementation of the protocol stack along with results of implementation has been provided in this paper.

  11. A Cluster-Based Fuzzy Fusion Algorithm for Event Detection in Heterogeneous Wireless Sensor Networks

    Directory of Open Access Journals (Sweden)

    ZiQi Hao

    2015-01-01

    Full Text Available As limited energy is one of the tough challenges in wireless sensor networks (WSN, energy saving becomes important in increasing the lifecycle of the network. Data fusion enables combining information from several sources thus to provide a unified scenario, which can significantly save sensor energy and enhance sensing data accuracy. In this paper, we propose a cluster-based data fusion algorithm for event detection. We use k-means algorithm to form the nodes into clusters, which can significantly reduce the energy consumption of intracluster communication. Distances between cluster heads and event and energy of clusters are fuzzified, thus to use a fuzzy logic to select the clusters that will participate in data uploading and fusion. Fuzzy logic method is also used by cluster heads for local decision, and then the local decision results are sent to the base station. Decision-level fusion for final decision of event is performed by base station according to the uploaded local decisions and fusion support degree of clusters calculated by fuzzy logic method. The effectiveness of this algorithm is demonstrated by simulation results.

  12. Virtual screening by a new Clustering-based Weighted Similarity Extreme Learning Machine approach.

    Science.gov (United States)

    Pasupa, Kitsuchart; Kudisthalert, Wasu

    2018-01-01

    Machine learning techniques are becoming popular in virtual screening tasks. One of the powerful machine learning algorithms is Extreme Learning Machine (ELM) which has been applied to many applications and has recently been applied to virtual screening. We propose the Weighted Similarity ELM (WS-ELM) which is based on a single layer feed-forward neural network in a conjunction of 16 different similarity coefficients as activation function in the hidden layer. It is known that the performance of conventional ELM is not robust due to random weight selection in the hidden layer. Thus, we propose a Clustering-based WS-ELM (CWS-ELM) that deterministically assigns weights by utilising clustering algorithms i.e. k-means clustering and support vector clustering. The experiments were conducted on one of the most challenging datasets-Maximum Unbiased Validation Dataset-which contains 17 activity classes carefully selected from PubChem. The proposed algorithms were then compared with other machine learning techniques such as support vector machine, random forest, and similarity searching. The results show that CWS-ELM in conjunction with support vector clustering yields the best performance when utilised together with Sokal/Sneath(1) coefficient. Furthermore, ECFP_6 fingerprint presents the best results in our framework compared to the other types of fingerprints, namely ECFP_4, FCFP_4, and FCFP_6.

  13. Towards automating the discovery of certain innovative design principles through a clustering-based optimization technique

    Science.gov (United States)

    Bandaru, Sunith; Deb, Kalyanmoy

    2011-09-01

    In this article, a methodology is proposed for automatically extracting innovative design principles which make a system or process (subject to conflicting objectives) optimal using its Pareto-optimal dataset. Such 'higher knowledge' would not only help designers to execute the system better, but also enable them to predict how changes in one variable would affect other variables if the system has to retain its optimal behaviour. This in turn would help solve other similar systems with different parameter settings easily without the need to perform a fresh optimization task. The proposed methodology uses a clustering-based optimization technique and is capable of discovering hidden functional relationships between the variables, objective and constraint functions and any other function that the designer wishes to include as a 'basis function'. A number of engineering design problems are considered for which the mathematical structure of these explicit relationships exists and has been revealed by a previous study. A comparison with the multivariate adaptive regression splines (MARS) approach reveals the practicality of the proposed approach due to its ability to find meaningful design principles. The success of this procedure for automated innovization is highly encouraging and indicates its suitability for further development in tackling more complex design scenarios.

  14. A framework using cluster-based hybrid network architecture for collaborative virtual surgery.

    Science.gov (United States)

    Qin, Jing; Choi, Kup-Sze; Poon, Wai-Sang; Heng, Pheng-Ann

    2009-12-01

    Research on collaborative virtual environments (CVEs) opens the opportunity for simulating the cooperative work in surgical operations. It is however a challenging task to implement a high performance collaborative surgical simulation system because of the difficulty in maintaining state consistency with minimum network latencies, especially when sophisticated deformable models and haptics are involved. In this paper, an integrated framework using cluster-based hybrid network architecture is proposed to support collaborative virtual surgery. Multicast transmission is employed to transmit updated information among participants in order to reduce network latencies, while system consistency is maintained by an administrative server. Reliable multicast is implemented using distributed message acknowledgment based on cluster cooperation and sliding window technique. The robustness of the framework is guaranteed by the failure detection chain which enables smooth transition when participants join and leave the collaboration, including normal and involuntary leaving. Communication overhead is further reduced by implementing a number of management approaches such as computational policies and collaborative mechanisms. The feasibility of the proposed framework is demonstrated by successfully extending an existing standalone orthopedic surgery trainer into a collaborative simulation system. A series of experiments have been conducted to evaluate the system performance. The results demonstrate that the proposed framework is capable of supporting collaborative surgical simulation.

  15. Trend analysis using non-stationary time series clustering based on the finite element method

    Science.gov (United States)

    Gorji Sefidmazgi, M.; Sayemuzzaman, M.; Homaifar, A.; Jha, M. K.; Liess, S.

    2014-05-01

    In order to analyze low-frequency variability of climate, it is useful to model the climatic time series with multiple linear trends and locate the times of significant changes. In this paper, we have used non-stationary time series clustering to find change points in the trends. Clustering in a multi-dimensional non-stationary time series is challenging, since the problem is mathematically ill-posed. Clustering based on the finite element method (FEM) is one of the methods that can analyze multidimensional time series. One important attribute of this method is that it is not dependent on any statistical assumption and does not need local stationarity in the time series. In this paper, it is shown how the FEM-clustering method can be used to locate change points in the trend of temperature time series from in situ observations. This method is applied to the temperature time series of North Carolina (NC) and the results represent region-specific climate variability despite higher frequency harmonics in climatic time series. Next, we investigated the relationship between the climatic indices with the clusters/trends detected based on this clustering method. It appears that the natural variability of climate change in NC during 1950-2009 can be explained mostly by AMO and solar activity.

  16. Object Tracking Using Adaptive Covariance Descriptor and Clustering-Based Model Updating for Visual Surveillance

    Directory of Open Access Journals (Sweden)

    Lei Qin

    2014-05-01

    Full Text Available We propose a novel approach for tracking an arbitrary object in video sequences for visual surveillance. The first contribution of this work is an automatic feature extraction method that is able to extract compact discriminative features from a feature pool before computing the region covariance descriptor. As the feature extraction method is adaptive to a specific object of interest, we refer to the region covariance descriptor computed using the extracted features as the adaptive covariance descriptor. The second contribution is to propose a weakly supervised method for updating the object appearance model during tracking. The method performs a mean-shift clustering procedure among the tracking result samples accumulated during a period of time and selects a group of reliable samples for updating the object appearance model. As such, the object appearance model is kept up-to-date and is prevented from contamination even in case of tracking mistakes. We conducted comparing experiments on real-world video sequences, which confirmed the effectiveness of the proposed approaches. The tracking system that integrates the adaptive covariance descriptor and the clustering-based model updating method accomplished stable object tracking on challenging video sequences.

  17. An Energy-Efficient Cluster-Based Vehicle Detection on Road Network Using Intention Numeration Method

    Directory of Open Access Journals (Sweden)

    Deepa Devasenapathy

    2015-01-01

    Full Text Available The traffic in the road network is progressively increasing at a greater extent. Good knowledge of network traffic can minimize congestions using information pertaining to road network obtained with the aid of communal callers, pavement detectors, and so on. Using these methods, low featured information is generated with respect to the user in the road network. Although the existing schemes obtain urban traffic information, they fail to calculate the energy drain rate of nodes and to locate equilibrium between the overhead and quality of the routing protocol that renders a great challenge. Thus, an energy-efficient cluster-based vehicle detection in road network using the intention numeration method (CVDRN-IN is developed. Initially, sensor nodes that detect a vehicle are grouped into separate clusters. Further, we approximate the strength of the node drain rate for a cluster using polynomial regression function. In addition, the total node energy is estimated by taking the integral over the area. Finally, enhanced data aggregation is performed to reduce the amount of data transmission using digital signature tree. The experimental performance is evaluated with Dodgers loop sensor data set from UCI repository and the performance evaluation outperforms existing work on energy consumption, clustering efficiency, and node drain rate.

  18. An energy-efficient cluster-based vehicle detection on road network using intention numeration method.

    Science.gov (United States)

    Devasenapathy, Deepa; Kannan, Kathiravan

    2015-01-01

    The traffic in the road network is progressively increasing at a greater extent. Good knowledge of network traffic can minimize congestions using information pertaining to road network obtained with the aid of communal callers, pavement detectors, and so on. Using these methods, low featured information is generated with respect to the user in the road network. Although the existing schemes obtain urban traffic information, they fail to calculate the energy drain rate of nodes and to locate equilibrium between the overhead and quality of the routing protocol that renders a great challenge. Thus, an energy-efficient cluster-based vehicle detection in road network using the intention numeration method (CVDRN-IN) is developed. Initially, sensor nodes that detect a vehicle are grouped into separate clusters. Further, we approximate the strength of the node drain rate for a cluster using polynomial regression function. In addition, the total node energy is estimated by taking the integral over the area. Finally, enhanced data aggregation is performed to reduce the amount of data transmission using digital signature tree. The experimental performance is evaluated with Dodgers loop sensor data set from UCI repository and the performance evaluation outperforms existing work on energy consumption, clustering efficiency, and node drain rate.

  19. Fuzzy Weight Cluster-Based Routing Algorithm for Wireless Sensor Networks

    Directory of Open Access Journals (Sweden)

    Teng Gao

    2015-01-01

    Full Text Available Cluster-based protocol is a kind of important routing in wireless sensor networks. However, due to the uneven distribution of cluster heads in classical clustering algorithm, some nodes may run out of energy too early, which is not suitable for large-scale wireless sensor networks. In this paper, a distributed clustering algorithm based on fuzzy weighted attributes is put forward to ensure both energy efficiency and extensibility. On the premise of a comprehensive consideration of all attributes, the corresponding weight of each parameter is assigned by using the direct method of fuzzy engineering theory. Then, each node works out property value. These property values will be mapped to the time axis and be triggered by a timer to broadcast cluster headers. At the same time, the radio coverage method is adopted, in order to avoid collisions and to ensure the symmetrical distribution of cluster heads. The aggregated data are forwarded to the sink node in the form of multihop. The simulation results demonstrate that clustering algorithm based on fuzzy weighted attributes has a longer life expectancy and better extensibility than LEACH-like algorithms.

  20. Cluster-based Dynamic Energy Management for Collaborative Target Tracking in Wireless Sensor Networks

    Directory of Open Access Journals (Sweden)

    Dao-Wei Bi

    2007-07-01

    Full Text Available A primary criterion of wireless sensor network is energy efficiency. Focused onthe energy problem of target tracking in wireless sensor networks, this paper proposes acluster-based dynamic energy management mechanism. Target tracking problem isformulated by the multi-sensor detection model as well as energy consumption model. Adistributed adaptive clustering approach is investigated to form a reasonable routingframework which has uniform cluster head distribution. Dijkstra’s algorithm is utilized toobtain optimal intra-cluster routing. Target position is predicted by particle filter. Thepredicted target position is adopted to estimate the idle interval of sensor nodes. Hence,dynamic awakening approach is exploited to prolong sleep time of sensor nodes so that theoperation energy consumption of wireless sensor network can be reduced. The sensornodes around the target wake up on time and act as sensing candidates. With the candidatesensor nodes and predicted target position, the optimal sensor node selection is considered.Binary particle swarm optimization is proposed to minimize the total energy consumptionduring collaborative sensing and data reporting. Experimental results verify that theproposed clustering approach establishes a low-energy communication structure while theenergy efficiency of wireless sensor networks is enhanced by cluster-based dynamic energymanagement.

  1. Membership determination of open clusters based on a spectral clustering method

    Science.gov (United States)

    Gao, Xin-Hua

    2018-06-01

    We present a spectral clustering (SC) method aimed at segregating reliable members of open clusters in multi-dimensional space. The SC method is a non-parametric clustering technique that performs cluster division using eigenvectors of the similarity matrix; no prior knowledge of the clusters is required. This method is more flexible in dealing with multi-dimensional data compared to other methods of membership determination. We use this method to segregate the cluster members of five open clusters (Hyades, Coma Ber, Pleiades, Praesepe, and NGC 188) in five-dimensional space; fairly clean cluster members are obtained. We find that the SC method can capture a small number of cluster members (weak signal) from a large number of field stars (heavy noise). Based on these cluster members, we compute the mean proper motions and distances for the Hyades, Coma Ber, Pleiades, and Praesepe clusters, and our results are in general quite consistent with the results derived by other authors. The test results indicate that the SC method is highly suitable for segregating cluster members of open clusters based on high-precision multi-dimensional astrometric data such as Gaia data.

  2. EXAMINING UNIVERSITY STUDENTS’ COGNITIVE ABSORPTION LEVELS REGARDING TO WEB AND ITS RELATIONSHIP WITH THE LOCUS OF CONTROL

    Directory of Open Access Journals (Sweden)

    Cem CUHADAR

    2013-07-01

    Full Text Available The current study investigated university students’ cognitive absorption levels according to several variables, and presented the relationship between cognitive absorption and locus of control. This study resorted to a descriptive model. Participants were 374 undergraduate students. The Cognitive Absorption Scale and Locus of Control Scale were used to collect the data. Independent samples t-test, one-way between-groups ANOVA, correlation and regression analyses were used to analyze data. Findings suggested that university students had above average cognitive absorption. Moreover, the higher the general internal control/personal control was, the lesser the cognitive absorption level. It was plausible to infer that information and communication technologies served as sources of pleasure and curiosity for university students. However, for students with a higher internal locus of control, levels of pleasure and curiosity dropped.

  3. Effect of exercise on depression in university students: a meta-analysis of randomized controlled trials.

    Science.gov (United States)

    Yan, Shi; Jin, YinZhe; Oh, YongSeok; Choi, YoungJun

    2016-06-01

    The aim of this study was to assess the effect of exercise on depression in university students. A systematic literature search was conducted in PubMed, EMBASE and the Cochrane library from their inception through December 10, 2014 to identify relevant articles. The heterogeneity across studies was examined by Cochran's Q statistic and the I2 statistic. Standardized mean difference (SMD) and 95% confidence interval (CI) were pooled to evaluate the effect of exercise on depression. Then, sensitivity and subgroup analyses were performed. In addition, publication bias was assessed by drawing a funnel plot. A total of 352 participants (154 cases and 182 controls) from eight included trials were included. Our pooled result showed a significant alleviative depression after exercise (SMD=-0.50, 95% CI: -0.97 to -0.03, P=0.04) with significant heterogeneity (P=0.003, I2=67%). Sensitivity analyses showed that the pooled result may be unstable. Subgroup analysis indicated that sample size may be a source of heterogeneity. Moreover, no publication bias was observed in this study. Exercise may be an effective therapy for treating depression in university students. However, further clinical studies with strict design and large samples focused on this specific population should be warranted in the future.

  4. An I/O subnet for the APS control system - The BITBUS Universal Gateway

    International Nuclear Information System (INIS)

    Nawrocki, G.J.; Arnold, N.D.; Hoffberg, M.G.; Winans, J.R.; Benes, S.J.

    1993-01-01

    The Advanced Photon Source (APS) control system is based on a distributed topology of microprocessor-based Input/Output Controllers (IOCs). Since the cost effectiveness of placing an IOC near every point where an interface to the control system is required may be prohibitive, I/O subnets implemented via message passing network protocols are utilized. For greatest flexibility, such a subnet must support connections to equipment via discrete I/O points, connections to standard interfaces such as GPIB and RS232, and be a practical network for custom-designed interfaces to intelligent equipment. This paper describes the BITBUS Universal Gateway (BUG), a device which supports the different interfaces mentioned above with a connection to a single BITBUS distributed subnet. The BUG utilizes an interchangeable set of circuit boards, which allow for a commonality among interface points, and the ability to use commercially-available modules for I/O. This approach also circumvents several limitations of GPIB and RS232, which restrict their use in industrial, electrically harsh environments, via an implementation of the BITBUS protocol over optical fibers

  5. Self-control and academic performance: Two field studies on university citizenship behavior and counterproductive academic behavior

    DEFF Research Database (Denmark)

    Zettler, Ingo

    2011-01-01

    Self-control affects, among other things, individuals' performance and criminal or deviant behavior. Herein, the construct of self-control is linked to rather specific criteria in an academic context, as derived from findings in the area of organizational psychology. Specifically, it is assumed...... that students' self-control impacts university citizenship behavior positively and counterproductive academic behavior negatively. Two correlative field studies, at which one is predictive, using different questionnaires to assess self-control support both hypotheses....

  6. Clustering-based classification of road traffic accidents using hierarchical clustering and artificial neural networks.

    Science.gov (United States)

    Taamneh, Madhar; Taamneh, Salah; Alkheder, Sharaf

    2017-09-01

    Artificial neural networks (ANNs) have been widely used in predicting the severity of road traffic crashes. All available information about previously occurred accidents is typically used for building a single prediction model (i.e., classifier). Too little attention has been paid to the differences between these accidents, leading, in most cases, to build less accurate predictors. Hierarchical clustering is a well-known clustering method that seeks to group data by creating a hierarchy of clusters. Using hierarchical clustering and ANNs, a clustering-based classification approach for predicting the injury severity of road traffic accidents was proposed. About 6000 road accidents occurred over a six-year period from 2008 to 2013 in Abu Dhabi were used throughout this study. In order to reduce the amount of variation in data, hierarchical clustering was applied on the data set to organize it into six different forms, each with different number of clusters (i.e., clusters from 1 to 6). Two ANN models were subsequently built for each cluster of accidents in each generated form. The first model was built and validated using all accidents (training set), whereas only 66% of the accidents were used to build the second model, and the remaining 34% were used to test it (percentage split). Finally, the weighted average accuracy was computed for each type of models in each from of data. The results show that when testing the models using the training set, clustering prior to classification achieves (11%-16%) more accuracy than without using clustering, while the percentage split achieves (2%-5%) more accuracy. The results also suggest that partitioning the accidents into six clusters achieves the best accuracy if both types of models are taken into account.

  7. UBO Detector - A cluster-based, fully automated pipeline for extracting white matter hyperintensities.

    Science.gov (United States)

    Jiang, Jiyang; Liu, Tao; Zhu, Wanlin; Koncz, Rebecca; Liu, Hao; Lee, Teresa; Sachdev, Perminder S; Wen, Wei

    2018-07-01

    We present 'UBO Detector', a cluster-based, fully automated pipeline for extracting and calculating variables for regions of white matter hyperintensities (WMH) (available for download at https://cheba.unsw.edu.au/group/neuroimaging-pipeline). It takes T1-weighted and fluid attenuated inversion recovery (FLAIR) scans as input, and SPM12 and FSL functions are utilised for pre-processing. The candidate clusters are then generated by FMRIB's Automated Segmentation Tool (FAST). A supervised machine learning algorithm, k-nearest neighbor (k-NN), is applied to determine whether the candidate clusters are WMH or non-WMH. UBO Detector generates both image and text (volumes and the number of WMH clusters) outputs for whole brain, periventricular, deep, and lobar WMH, as well as WMH in arterial territories. The computation time for each brain is approximately 15 min. We validated the performance of UBO Detector by showing a) high segmentation (similarity index (SI) = 0.848) and volumetric (intraclass correlation coefficient (ICC) = 0.985) agreement between the UBO Detector-derived and manually traced WMH; b) highly correlated (r 2  > 0.9) and a steady increase of WMH volumes over time; and c) significant associations of periventricular (t = 22.591, p deep (t = 14.523, p < 0.001) WMH volumes generated by UBO Detector with Fazekas rating scores. With parallel computing enabled in UBO Detector, the processing can take advantage of multi-core CPU's that are commonly available on workstations. In conclusion, UBO Detector is a reliable, efficient and fully automated WMH segmentation pipeline. Copyright © 2018 Elsevier Inc. All rights reserved.

  8. Cross-layer cluster-based energy-efficient protocol for wireless sensor networks.

    Science.gov (United States)

    Mammu, Aboobeker Sidhik Koyamparambil; Hernandez-Jayo, Unai; Sainz, Nekane; de la Iglesia, Idoia

    2015-04-09

    Recent developments in electronics and wireless communications have enabled the improvement of low-power and low-cost wireless sensors networks (WSNs). One of the most important challenges in WSNs is to increase the network lifetime due to the limited energy capacity of the network nodes. Another major challenge in WSNs is the hot spots that emerge as locations under heavy traffic load. Nodes in such areas quickly drain energy resources, leading to disconnection in network services. In such an environment, cross-layer cluster-based energy-efficient algorithms (CCBE) can prolong the network lifetime and energy efficiency. CCBE is based on clustering the nodes to different hexagonal structures. A hexagonal cluster consists of cluster members (CMs) and a cluster head (CH). The CHs are selected from the CMs based on nodes near the optimal CH distance and the residual energy of the nodes. Additionally, the optimal CH distance that links to optimal energy consumption is derived. To balance the energy consumption and the traffic load in the network, the CHs are rotated among all CMs. In WSNs, energy is mostly consumed during transmission and reception. Transmission collisions can further decrease the energy efficiency. These collisions can be avoided by using a contention-free protocol during the transmission period. Additionally, the CH allocates slots to the CMs based on their residual energy to increase sleep time. Furthermore, the energy consumption of CH can be further reduced by data aggregation. In this paper, we propose a data aggregation level based on the residual energy of CH and a cost-aware decision scheme for the fusion of data. Performance results show that the CCBE scheme performs better in terms of network lifetime, energy consumption and throughput compared to low-energy adaptive clustering hierarchy (LEACH) and hybrid energy-efficient distributed clustering (HEED).

  9. Direct Reconstruction of CT-based Attenuation Correction Images for PET with Cluster-Based Penalties

    Science.gov (United States)

    Kim, Soo Mee; Alessio, Adam M.; De Man, Bruno; Asma, Evren; Kinahan, Paul E.

    2015-01-01

    Extremely low-dose CT acquisitions for the purpose of PET attenuation correction will have a high level of noise and biasing artifacts due to factors such as photon starvation. This work explores a priori knowledge appropriate for CT iterative image reconstruction for PET attenuation correction. We investigate the maximum a posteriori (MAP) framework with cluster-based, multinomial priors for the direct reconstruction of the PET attenuation map. The objective function for direct iterative attenuation map reconstruction was modeled as a Poisson log-likelihood with prior terms consisting of quadratic (Q) and mixture (M) distributions. The attenuation map is assumed to have values in 4 clusters: air+background, lung, soft tissue, and bone. Under this assumption, the MP was a mixture probability density function consisting of one exponential and three Gaussian distributions. The relative proportion of each cluster was jointly estimated during each voxel update of direct iterative coordinate decent (dICD) method. Noise-free data were generated from NCAT phantom and Poisson noise was added. Reconstruction with FBP (ramp filter) was performed on the noise-free (ground truth) and noisy data. For the noisy data, dICD reconstruction was performed with the combination of different prior strength parameters (β and γ) of Q- and M-penalties. The combined quadratic and mixture penalties reduces the RMSE by 18.7% compared to post-smoothed iterative reconstruction and only 0.7% compared to quadratic alone. For direct PET attenuation map reconstruction from ultra-low dose CT acquisitions, the combination of quadratic and mixture priors offers regularization of both variance and bias and is a potential method to derive attenuation maps with negligible patient dose. However, the small improvement in quantitative accuracy relative to the substantial increase in algorithm complexity does not currently justify the use of mixture-based PET attenuation priors for reconstruction of CT

  10. Cross-Layer Cluster-Based Energy-Efficient Protocol for Wireless Sensor Networks

    Directory of Open Access Journals (Sweden)

    Aboobeker Sidhik Koyamparambil Mammu

    2015-04-01

    Full Text Available Recent developments in electronics and wireless communications have enabled the improvement of low-power and low-cost wireless sensors networks (WSNs. One of the most important challenges in WSNs is to increase the network lifetime due to the limited energy capacity of the network nodes. Another major challenge in WSNs is the hot spots that emerge as locations under heavy traffic load. Nodes in such areas quickly drain energy resources, leading to disconnection in network services. In such an environment, cross-layer cluster-based energy-efficient algorithms (CCBE can prolong the network lifetime and energy efficiency. CCBE is based on clustering the nodes to different hexagonal structures. A hexagonal cluster consists of cluster members (CMs and a cluster head (CH. The CHs are selected from the CMs based on nodes near the optimal CH distance and the residual energy of the nodes. Additionally, the optimal CH distance that links to optimal energy consumption is derived. To balance the energy consumption and the traffic load in the network, the CHs are rotated among all CMs. In WSNs, energy is mostly consumed during transmission and reception. Transmission collisions can further decrease the energy efficiency. These collisions can be avoided by using a contention-free protocol during the transmission period. Additionally, the CH allocates slots to the CMs based on their residual energy to increase sleep time. Furthermore, the energy consumption of CH can be further reduced by data aggregation. In this paper, we propose a data aggregation level based on the residual energy of CH and a cost-aware decision scheme for the fusion of data. Performance results show that the CCBE scheme performs better in terms of network lifetime, energy consumption and throughput compared to low-energy adaptive clustering hierarchy (LEACH and hybrid energy-efficient distributed clustering (HEED.

  11. Universal health coverage at the macro level: Synthetic control evidence from Thailand.

    Science.gov (United States)

    Rieger, Matthias; Wagner, Natascha; Bedi, Arjun S

    2017-01-01

    As more and more countries are moving towards Universal Health Coverage (UHC), it is important to understand the macro level or aggregate impacts of such a policy. We use synthetic control methods to study the impact of UHC, introduced in Thailand in 2001, on various macroeconomic and health outcomes. Thailand is compared to a weighted average of control countries in terms of aggregate health financing indicators, aggregate health outcomes and economic performance, over the period 1995 to 2012. Our results suggest that UHC helps alleviate the financial consequences of illnesses. The estimated treatment effect of UHC on out-of-pocket payments as a percentage of overall health expenditures is negative 13 percentage points and its effect on annual government per capita health spending is US$ 79. We detect a smaller effect of US$ 60.8 on total health spending per capita which appears with a lag. We document positive health effects as captured by reductions in infant and child mortality. We do not find any effect on GDP and the share of the government budget devoted to health. Overall, our results complement micro evidence based on within country variation. The counterfactual design implemented here may be used to inform other countries on the macro level repercussions of UHC. Copyright © 2016. Published by Elsevier Ltd.

  12. Skills Training via Smartphone App for University Students with Excessive Alcohol Consumption: a Randomized Controlled Trial.

    Science.gov (United States)

    Gajecki, Mikael; Andersson, Claes; Rosendahl, Ingvar; Sinadinovic, Kristina; Fredriksson, Morgan; Berman, Anne H

    2017-10-01

    University students in a study on estimated blood alcohol concentration (eBAC) feedback apps were offered participation in a second study, if reporting continued excessive consumption at 6-week follow-up. This study evaluated the effects on excessive alcohol consumption of offering access to an additional skills training app. A total of 186 students with excessive alcohol consumption were randomized to an intervention group or a wait list group. Both groups completed online follow-ups regarding alcohol consumption after 6 and 12 weeks. Wait list participants were given access to the intervention at 6-week follow-up. Assessment-only controls (n = 144) with excessive alcohol consumption from the ongoing study were used for comparison. The proportion of participants with excessive alcohol consumption declined in both intervention and wait list groups compared to controls at first (p effects of app use from emailed feedback on excessive alcohol consumption and study participation. NCT02064998.

  13. Optimal control of universal quantum gates in a double quantum dot

    Science.gov (United States)

    Castelano, Leonardo K.; de Lima, Emanuel F.; Madureira, Justino R.; Degani, Marcos H.; Maialle, Marcelo Z.

    2018-06-01

    We theoretically investigate electron spin operations driven by applied electric fields in a semiconductor double quantum dot (DQD) formed in a nanowire with longitudinal potential modulated by local gating. We develop a model that describes the process of loading and unloading the DQD taking into account the overlap between the electron wave function and the leads. Such a model considers the spatial occupation and the spin Pauli blockade in a time-dependent fashion due to the highly mixed states driven by the external electric field. Moreover, we present a road map based on the quantum optimal control theory (QOCT) to find a specific electric field that performs two-qubit quantum gates on a faster timescale and with higher possible fidelity. By employing the QOCT, we demonstrate the possibility of performing within high efficiency a universal set of quantum gates {cnot, H, and T } , where cnot is the controlled-not gate, H is the Hadamard gate, and T is the π /8 gate, even in the presence of the loading/unloading process and charge noise effects. Furthermore, by varying the intensity of the applied magnetic field B , the optimized fidelity of the gates oscillates with a period inversely proportional to the gate operation time tf. This behavior can be useful to attain higher fidelity for fast gate operations (>1 GHz) by appropriately choosing B and tf to produce a maximum of the oscillation.

  14. [Inspection by infection control team of the University Hospital, Faculty of Dentistry, Tokyo Medical and Dental University].

    Science.gov (United States)

    Sunakawa, Mitsuhiro; Matsumoto, Hiroyuki; Harasawa, Hideki; Tsukikawa, Wakana; Takagi, Yuzo; Suda, Hideaki

    2006-06-01

    Factors affecting infection are the existence of infectious microorganisms, sensitivity of hosts, number of microorganisms, and infectious routes. Efforts to prevent infection focus on not allowing these factors to reach the threshold level. Inspection by an infection control team (ICT) of a hospital is one countermeasure for preventing nosocomial infection. We summarize here the problems for complete prevention of nosocomial infection based on the results of inspection by our ICT, so that staff working in the hospital can recognize the importance of preventing nosocomial infection. The following were commonly observed problems in our clinics found by the ICT : (1) incomplete practice of standard precautions and/or isolation precautions, (2) noncompliance with guidelines for the prevention of cross-infection, and (3) inappropriate management of medical rejectamenta. Infection control can be accomplished by strictly observing the standard precautions and isolation precautions. The ICT inspection round in the hospital could be an effective metaff working in the hod to clarify and overcome the problems involved in infection.

  15. Dietary compliance and its association with glycemic control among poorly controlled type 2 diabetic outpatients in Hospital Universiti Sains Malaysia.

    Science.gov (United States)

    Tan, S L; Juliana, S; Sakinah, H

    2011-12-01

    Compliance with medical nutrition therapy is important to improve patient outcomes. The purpose of this study was to determine dietary compliance and its association with glycemic control among outpatients with poorly controlled type 2 diabetes mellitus (T2DM) in Hospital Universiti Sains Malaysia (HUSM). In this cross-sectional study, patients who had a glycosylated hemoglobin (HbA1c) level of at least 6.5%, after attending a diet counseling session at the Outpatient Dietetic Clinic, HUSM, were enrolled. Out of 150 diabetic patients reviewed between 2006 and 2008, 61 adults (32 men and 29 women) agreed to participate in this study. A questionnaire-based interview was used to collect socio-demographic, clinical and diabetes self-care data. The patient's dietary compliance rate was determined by the Summary of Diabetes Self-Care Activities (SDSCA) measure. Anthropometric and biological measurements were also taken. Only 16.4% of the respondents adhered to the dietary regimen provided by dietitians. Among the 7 dietary self-care behaviours, item number 6 (eat lots of food high in dietary fibre such as vegetable or oats) had the highest compliant rate (54.1%); whereas item number 3 (eat five or more servings of fruits and vegetables per day) had the lowest compliant rate (23.0%). There was a significant association between gender (p = 0.037) and fasting blood sugar (FBS) (p = 0.007) with the compliance status. Dietary non-compliance is still common among T2DM patients. Dietitians need to improve their skills and use more effective intervention approaches in providing dietary counseling to patients.

  16. In search of financial sufficiency in the Spanish public university: From financing to the cost control and cost management

    Directory of Open Access Journals (Sweden)

    Santiago Aguilà

    2016-02-01

    Full Text Available Purpose: The current socio-economic context characterized by restrictive budgetary policies in the countries of the European Union has led to a reduction in public funding in the Spanish public university raising the deficit in many universities. That is why, while they are completing the implementation of a cost accounting model (Modelo Canoa to quantify their real financial needs, are also increasing academic rates with the limits established in the Decree-Law 14/2012 of 20 April as practically the only resource. This fact may ultimately affect demand. It is urgent to find therefore new sources of private funding as well as implementing techniques to control and reduce costs justified by the extreme financial situations of some universities. Design/methodology: These new sources of private funding as well as the specific techniques of control and cost management that are used in public universities outside of Spain are described. It has also made a poll to the managers of the Spanish public universities considering the diversification of funding sources and the feasibility of adopting specific techniques of control and cost management to help the achievement of financial sufficiency. Findings: Especially in the US universities, financing is more diversified and not depend so much of the increase in public rates. Specific techniques of control and cost management are also used and they are applicable to the Spanish case according to the opinion of the managers. Research limitations/implications: 82% of managers have completed the proposed poll. Originality/value: Identifying sources of private funding and specific techniques of control and cost management applicable to the Spanish public universities.

  17. Policy of Innovation Clustering Based on the Public-Private Partnership in Contemporary Russia

    Directory of Open Access Journals (Sweden)

    Oleg Vasilyevich Inshakov

    2016-10-01

    Full Text Available The article presents an analysis of trends in organizational, industrial and infrastructural development of innovative territorial clusters (ITC in the Russian Federation. Parameters and characteristics of subsidies allocated from various sources for these purposes in 2013-2015 are disclosed. The study of the conducted ITC’s support policies reflects the concentration of clusters’ control levers by the regional authorities, that causes certain risks of clustering processes containment in general. The spatial and temporal unevenness of clusters’ organizational development process, the instability of their financial support and strengthening the vertical channels of influence that could give rise to corruption, stagnation and ignoring the views of cluster participants when making strategic decisions are revealed. The authors reveal the necessity of conceptual enrichment of the methods and tools of formation and implementation of ITC’s strategies aimed at achieving high feasibility and concretization of their goals and means, providing strong link between tactical measures and ongoing projects, and balancing the interests of stakeholders. It is proved in the article that the urgent task of enhancing the state of clustering policy in Russia has become a framework to improve the quality of ITC’s projects initiated and creating an adequate system for monitoring the effectiveness of their implementation. While assessing the ITC projects it is proposed to take into account the investment effectiveness, associated with the home region development strategy, sectoral strategies, profile programs of companies’ innovative development on the public-private partnership basis, regional universities development programs, as well as the similar projects implemented in other regions of Russia.

  18. The information system of learning quality control in higher education institutions: achievements and problems of European universities

    Directory of Open Access Journals (Sweden)

    Orekhova Elena

    2016-01-01

    Full Text Available The article deals with the main trends in the development of the system of learning quality control connected with the European integration of higher education and the democratization of education. The authors analyze the state of information systems of learning quality control existing in European higher education and identify their strong and weak points. The authors show that in the learning process universities actively use innovative analytic methods as well as modern means of collecting, storing and transferring information that ensure the successful management of such a complex object as the university of the 21st century.

  19. ADAPTIVE CLUSTER BASED ROUTING PROTOCOL WITH ANT COLONY OPTIMIZATION FOR MOBILE AD-HOC NETWORK IN DISASTER AREA

    Directory of Open Access Journals (Sweden)

    Enrico Budianto

    2012-07-01

    Full Text Available In post-disaster rehabilitation efforts, the availability of telecommunication facilities takes important role. However, the process to improve telecommunication facilities in disaster area is risky if it is done by humans. Therefore, a network method that can work efficiently, effectively, and capable to reach the widest possible area is needed. This research introduces a cluster-based routing protocol named Adaptive Cluster Based Routing Protocol (ACBRP equipped by Ant Colony Optimization method, and its implementation in a simulator developed by author. After data analysis and statistical tests, it can be concluded that routing protocol ACBRP performs better than AODV and DSR routing protocol. Pada upaya rehabilitasi pascabencana, ketersediaan fasilitas telekomunikasi memiliki peranan yang sangat penting. Namun, proses untuk memperbaiki fasilitas telekomunikasi di daerah bencana memiliki resiko jika dilakukan oleh manusia. Oleh karena itu, metode jaringan yang dapat bekerja secara efisien, efektif, dan mampu mencapai area seluas mungkin diperlukan. Penelitian ini memperkenalkan sebuah protokol routing berbasis klaster bernama Adaptive Cluster Based Routing Protocol (ACBRP, yang dilengkapi dengan metode Ant Colony Optimization, dan diimplementasikan pada simulator yang dikembangkan penulis. Setelah data dianalisis dan dilakukan uji statistik, disimpulkan bahwa protokol routing ACBRP beroperasi lebih baik daripada protokol routing AODV maupun DSR.

  20. A Universal Communication Framework and Navigation Control Software for Mobile Prototyping Platforms

    Directory of Open Access Journals (Sweden)

    Andreas Mitschele-Thiel

    2010-09-01

    Full Text Available In our contribution we would like to describe two new aspects of our low-cost mobile prototyping platform concept: a new hardware communication framework as well as new software features for navigation and control of our mobile platform. The paper is an extension of the ideas proposed in REV2009 [1] and is based on the therein used hardware platform and the monitoring and management software. This platform is based on the Quadrocopter concept – autonomous flying helicopter-style robots – and includes additional off-the-shelf parts. This leads to a universal mobile prototyping platform for communication tasks providing both mobile phone and WiFi access. However, the platform can provide these functions far more quickly than a technician on the ground might be able to. We will show that with our concept we can easily adapt the platform to the individual needs of the user, which leads to a very flexible and semi-autonomous system.

  1. Integrating E-Learning and Classroom Learning for Engineering Quality Control unit - Curtin University Experience

    Directory of Open Access Journals (Sweden)

    Ali M. Darabi Golshani

    2011-08-01

    Full Text Available Engineering employers expect engineering graduates to possess a wide range of skills that goes beyond their technical knowledge. It is vital that graduates have skills which demonstrate that they are responsible for their own development and careers. Some of these skills include; communication abilities, organizational skills, self-promotion, the ability to work as part of a team, be an effective problem solver, be a critical thinker, have good negotiation skills, have the ability to be a leader and being able to network effectively. Department of Civil Engineering at Curtin University of Technology in Perth, Australia offers a Master of Engineering Management degree for Engineers from various disciplines. One of the units taught in this Master degree program is Engineering Quality Control. It was decided to incorporate these non-technical skills in this unit by using an e-learning platform (Blackboard together with an adaptation of the Seven Principles of Good Practice and Dr Meredith Belbin’s team role theory to divide participants into groups. At the end of the unit, most of the participants were showing improvements in their non-technical skills.

  2. Auditors of the Managerial University: Neo-Liberal Business Advisers or Paternal Controllers?

    Science.gov (United States)

    Reid, Ian C.

    2009-01-01

    Universities are increasingly being seen as commercial enterprises, and are represented as particular types of business entities in manuals provided to university managers. Critical discourse analysis is employed in this paper to construct an analytical framework for the study of managerial advice, which is then used to examine the manual provided…

  3. Examining University Students’ Cognitive Absorption Levels Regarding To Web And Its Relationship With The Locus Of Control

    OpenAIRE

    CUHADAR, Cem

    2015-01-01

    The current study investigated university students’ cognitive absorption levels according to several variables, and presented the relationship between cognitive absorption and locus of control. This study resorted to a descriptive model. Participants were 374 undergraduate students. The Cognitive Absorption Scale and Locus of Control Scale were used to collect the data. Independent samples t-test, one-way between-groups ANOVA, correlation and regression analyses were used to analyze data....

  4. Screening and contact precautions – A survey on infection control measures for multidrug-resistant bacteria in German university hospitals

    Directory of Open Access Journals (Sweden)

    Lena M. Biehl

    2017-04-01

    Full Text Available Abstract To assess the scope of infection control measures for multidrug-resistant bacteria in high-risk settings, a survey among university hospitals was conducted. Fourteen professionals from 8 sites participated. Reported policies varied largely with respect to the types of wards conducting screening, sample types used for screening and implementation of contact precautions. This variability among sites highlights the need for an evidence-based consensus of current infection control policies.

  5. The Interrelationship of Social Anxiety with Anxiety, Depression, Locus of Control, Ways of Coping and Ego Strength amongst University Students

    Science.gov (United States)

    Shepherd, Robin-Marie; Edelman, Robert J.

    2009-01-01

    This is the first study to investigate the interrelationship of social anxiety with the variables anxiety, depression, locus of control, ego strength and ways of coping in a sample of university students. There were high scores of social anxiety which were related to high scores on measures of anxiety and depression, low ego strength, external…

  6. Examination of Socialization Level of University Students Engaged in Sports Activities According to Their Locus of Control

    Science.gov (United States)

    Inan, Mehmet; Karagözoglu, Cengiz; Dervent, Fatih; Arslantas, Bülent

    2015-01-01

    In this study, the university students who participate in sports have been examined in terms of their socialization relative to the participation in sport activities and the locus of control. Students are thought to be engaged in many activities in addition to their lessons during their student tenure at higher education institutions. Their…

  7. Locus of Control, Self-Efficacy, and Task Value as Predictors of Learning Outcome in an Online University Context

    Science.gov (United States)

    Joo, Young Ju; Lim, Kyu Yon; Kim, Jiyeon

    2013-01-01

    This study investigates the predictors of learner satisfaction, achievement and persistence in an online university located in South Korea. The specific predictors were learners' locus of control, self-efficacy, and task value, and the mediating effects of learner satisfaction and achievement were also tested. Structural equation modeling (SEM)…

  8. Sensation Seeking and Locus of Control in University Students in the Context of Regular Exercise Participation and Gender

    Science.gov (United States)

    Tekin, Ali; Tekin, Gülcan; Çalisir, Melih

    2017-01-01

    The aim of this study is to determine the locus of control (LC) and sensation seeking (SS) levels of university female students according to regular exercise participation (REP) and gender (G). This descriptive study was initiated in 2016 and finished in 2017. A total of 623 students, 306 females and 317 males, from different academic departments…

  9. Evaluating a Web-Based Social Anxiety Intervention Among University Students: Randomized Controlled Trial.

    Science.gov (United States)

    McCall, Hugh Cameron; Richardson, Chris G; Helgadottir, Fjola Dogg; Chen, Frances S

    2018-03-21

    Treatment rates for social anxiety, a prevalent and potentially debilitating condition, remain among the lowest of all major mental disorders today. Although computer-delivered interventions are well poised to surmount key barriers to the treatment of social anxiety, most are only marginally effective when delivered as stand-alone treatments. A new, Web-based cognitive behavioral therapy (CBT) intervention called Overcome Social Anxiety was recently created to address the limitations of prior computer-delivered interventions. Users of Overcome Social Anxiety are self-directed through various CBT modules incorporating cognitive restructuring and behavioral experiments. The intervention is personalized to each user's symptoms, and automatic email reminders and time limits are used to encourage adherence. The purpose of this study was to conduct a randomized controlled trial to investigate the effectiveness of Overcome Social Anxiety in reducing social anxiety symptoms in a nonclinical sample of university students. As a secondary aim, we also investigated whether Overcome Social Anxiety would increase life satisfaction in this sample. Following eligibility screening, participants were randomly assigned to a treatment condition or a wait-list control condition. Only those assigned to the treatment condition were given access to Overcome Social Anxiety; they were asked to complete the program within 4 months. The social interaction anxiety scale (SIAS), the fear of negative evaluation scale (FNE), and the quality of life enjoyment and satisfaction questionnaire-short form (Q-LES-Q-SF) were administered to participants from both conditions during baseline and 4-month follow-up lab visits. Over the course of the study, participants assigned to the treatment condition experienced a significant reduction in social anxiety (SIAS: Psocial anxiety in the 2 conditions over the course of the study showed that those assigned to the treatment condition experienced significantly

  10. Health-related locus of control and health behaviour among university students in North Rhine Westphalia, Germany

    Directory of Open Access Journals (Sweden)

    Helmer Stefanie M

    2012-12-01

    Full Text Available Abstract Background Health control beliefs were postulated to be associated with health behaviour. However, the results of studies assessing these associations suggest that they might not be universal. Among young adults associations have been reported, but the evidence is limited. The objective of this analysis was to re-examine these associations in a sample of university students in Germany. Findings Data from a multicentre cross-sectional study among university students in North Rhine-Westphalia, Germany was used (N=3,306. The Multidimensional Health Locus of Control Scale with three dimensions (one internal and two external and six aspects of health behaviour (smoking habits, alcohol use, drug consumption, being over-/ or underweight, physical activity, and importance of healthy nutrition were evaluated. Students with stronger internal locus of control paid more attention to healthy nutrition and displayed a higher level of physical activity. Individuals with a stronger belief in health professionals were less likely to use drugs and paid more attention to healthy nutrition. Furthermore, higher scores in the second external locus of control dimension (beliefs in luck or chance were associated with a higher likelihood of current smoking, lower physical activity and less attention to healthy nutrition. Conclusions Students engaged more strongly in unhealthy behaviour if they believed that luck determines health. In contrast, believing in having control over one’s own health was associated with more healthy behaviour. These findings support the need to consider health control beliefs while designing preventive strategies in this specific population.

  11. Health-related locus of control and health behaviour among university students in North Rhine Westphalia, Germany.

    Science.gov (United States)

    Helmer, Stefanie M; Krämer, Alexander; Mikolajczyk, Rafael T

    2012-12-29

    Health control beliefs were postulated to be associated with health behaviour. However, the results of studies assessing these associations suggest that they might not be universal. Among young adults associations have been reported, but the evidence is limited. The objective of this analysis was to re-examine these associations in a sample of university students in Germany. Data from a multicentre cross-sectional study among university students in North Rhine-Westphalia, Germany was used (N=3,306). The Multidimensional Health Locus of Control Scale with three dimensions (one internal and two external) and six aspects of health behaviour (smoking habits, alcohol use, drug consumption, being over-/ or underweight, physical activity, and importance of healthy nutrition) were evaluated. Students with stronger internal locus of control paid more attention to healthy nutrition and displayed a higher level of physical activity. Individuals with a stronger belief in health professionals were less likely to use drugs and paid more attention to healthy nutrition. Furthermore, higher scores in the second external locus of control dimension (beliefs in luck or chance) were associated with a higher likelihood of current smoking, lower physical activity and less attention to healthy nutrition. Students engaged more strongly in unhealthy behaviour if they believed that luck determines health. In contrast, believing in having control over one's own health was associated with more healthy behaviour. These findings support the need to consider health control beliefs while designing preventive strategies in this specific population.

  12. Risk factors for prostate cancer in Universiti Kebangsaan Malaysia Medical Centre: a case-control study.

    Science.gov (United States)

    Subahir, Mohd Nizam; Shah, Shamsul Azhar; Zainuddin, Zulkifli Md

    2009-01-01

    In Malaysia, prostate cancer is ranked 6th among male cancer and expected to increase in the future. Several factors have shown to be related to prostate cancer such as sociodemographic, lifestyle, diet, occupational exposure, medical and health status. This is the first time a similar study was conducted in Malaysia to recognize the risk factors for prostate cancer patients who came for treatment at University Kebangsaan Malaysia Medical Centre (UKMMC). Prostate cancer cases diagnosed between 2003 and 2008 which met with the inclusion criteria were included in the study. One hundred and twelfth (112) pairs of cases and controls matched by age and ethnicity were analysed. McNemar Odds Ratios (OR(M)) were calculated using McNemar Calculator software for univariate analysis while conditional logistic regression was used for multivariate analysis, both using SPSS version 12.0. Most of the prostate cancer patients (68.8%) that came for treatment in UKMMC were above 70 years old. The majority were Chinese (50.0%) followed by Malay (46.4%) and Indian (3.6%). Multivariate analysis showed cases were more likely to have a first-degree relative with a history of cancer (OR= 3.77, 95% CI= 1.19-11.85), to have been exposed to pesticides (OR= 5.57, 95% CI= 1.75-17.78) and consumed more meat (OR= 12.23, 95% CI= 3.89-39.01). Significantly reduced risks of prostate cancer were noted among those consuming more vegetables (OR= 0.12, 95% CI= 0.02-0.84), more tomatoes (OR= 0.35, 95% CI= 0.13-0.93) and those who had frequent sexual intercourse (OR= 0.44, 95% CI= 0.19-0.96). Some lifestyle and occupation factors are strong predictors of the occurrence of prostate cancer among patients in UKMMC. More importantly, with the identification of the potentially modifiable risk factors, proper public health intervention can be improved.

  13. Overestimation of own body weights in female university students: associations with lifestyles, weight control behaviors and depression

    OpenAIRE

    Kim, Miso; Lee, Hongmie

    2010-01-01

    The study aimed to analyze the lifestyles, weight control behavior, dietary habits, and depression of female university students. The subjects were 532 students from 8 universities located in 4 provinces in Korea. According to percent ideal body weight, 33 (6.4%), 181 (34.0%), 283 (53.2%), 22 (4.1%) and 13 (2.5%) were severely underweight, underweight, normal, overweight and obese, respectively, based on self-reported height and weight. As much as 64.1% and only 2.4%, respectively, overestima...

  14. Risk Perception of HIV/AIDS and Low Self-Control Trait: Explaining Preventative Behaviors Among Iranian University Students

    Science.gov (United States)

    Esmaeilzadeh, Safooreh; Allahverdipour, Hamid; Fathi, Behrouz; Shirzadi, Shayesteh

    2016-01-01

    Background: In spite of developed countries there are progressive trend about HIV/AIDS and its’ aspects of transmission in the low socio-economic societies. The aim of this was to explain the youth's behavior in adopting HIV/AIDS related preventive behaviors in a sample of Iranian university students by emphasizing on fear appeals approaches alongside examining the role of self-control trait for explaining adoption on danger or fear control processes based on Extended Parallel Process Model (EPPM). Methods: A sample of 156 randomly selected university students in Jolfa, Iran was recruited in a predictive cross-sectional study by application of a researcher-designed questionnaire through self-report data collection manner. Sexual high risk behaviors, the EPPM variables, self-control trait, and general self-efficacy were measured as theoretical framework. Results: Findings indicated that 31.3% of participants were in the fear control process versus 68.7% in danger control about HIV/AIDS and also the presence of multi-sex partners and amphetamine consumption amongst the participants. Low self-control trait and low perceived susceptibility significantly were related to having a history of multi-sex partners while high level of self-efficacy significantly increased the probability of condom use. Conclusion: Findings of the study were indicative of the protective role of high level of self-control, perceived susceptibility and self-efficacy factors on youth's high-risk behaviors and their preventative skills as well. PMID:26573026

  15. Parent-child relationships and self‑control in male university students' desire to play video games.

    Science.gov (United States)

    Karbasizadeh, Sina; Jani, Masih; Keshvari, Mahtab

    2018-06-12

    To determine the relationship between the parent-child relationship, self-control and demographic characteristics and the desire to play video games among male university students at one university in Iran. This was a correlational, descriptive, applied study. A total of 103 male students were selected randomly as a study sample from the population of male students at Isfahan University in Iran. Data collection tools used were the Video Games Questionnaire, Tanji's Self-Control Scale, Parent-Child Relationship Questionnaire, and Demographic Questionnaire. Data were analysed using stepwise regression analysis. This study found several factors increased male students' desire to play video games. Demographic characteristics associated with increased tendency to play video games among male students in Iran are older age, larger number of family members, lower parental level of education and higher socio-economic class, while other significant factors are a lower level of self‑control and a poorer parent-child relationship. PARTICIPANTS': higher socio-economic class, lower level of self-control and older age explained 8.2%, 5.2% and 5.9% of their desire to play video games, respectively. These three variables together accounted for significantly 16.9% of a male student's desire to play video games in this study ( P video games in Iran. Moreover, lower levels of self-control and a poorer parent-child relationship were found to be accompanied by a greater desire to play video games among male university students. © 2018 RCN Publishing Company Ltd. All rights reserved. Not to be copied, transmitted or recorded in any way, in whole or part, without prior permission of the publishers.

  16. A 10-Week Multimodal Nutrition Education Intervention Improves Dietary Intake among University Students: Cluster Randomised Controlled Trial

    Directory of Open Access Journals (Sweden)

    Mohd Razif Shahril

    2013-01-01

    Full Text Available The aim of the study was to evaluate the effectiveness of implementing multimodal nutrition education intervention (NEI to improve dietary intake among university students. The design of study used was cluster randomised controlled design at four public universities in East Coast of Malaysia. A total of 417 university students participated in the study. They were randomly selected and assigned into two arms, that is, intervention group (IG or control group (CG according to their cluster. The IG received 10-week multimodal intervention using three modes (conventional lecture, brochures, and text messages while CG did not receive any intervention. Dietary intake was assessed before and after intervention and outcomes reported as nutrient intakes as well as average daily servings of food intake. Analysis of covariance (ANCOVA and adjusted effect size were used to determine difference in dietary changes between groups and time. Results showed that, compared to CG, participants in IG significantly improved their dietary intake by increasing their energy intake, carbohydrate, calcium, vitamin C and thiamine, fruits and 100% fruit juice, fish, egg, milk, and dairy products while at the same time significantly decreased their processed food intake. In conclusion, multimodal NEI focusing on healthy eating promotion is an effective approach to improve dietary intakes among university students.

  17. Relationship between healthy lifestyle behaviors and health locus of control and health-specific self-efficacy in university students.

    Science.gov (United States)

    Açıkgöz Çepni, Serap; Kitiş, Yeter

    2017-07-01

    To investigate the relationship between the healthy lifestyle behaviors and the health locus of control and health-specific self-efficacy in university students. The study included 572 undergraduate students of a university in the central Anatolia region of Turkey. The data were collected with the General Characteristics Form, the Health-Promoting Lifestyle Profile II, the Multidimensional Health Locus of Control Scale, and the Perceived Health Competence Scale and investigated with the structural equation model. Health-specific self-efficacy was an important predictor of healthy lifestyle behaviors. The Internal health locus of control influenced the healthy lifestyle behaviors through health-specific self-efficacy. The other dimension was the Powerful Others health locus of control that affected healthy lifestyle behaviors, both directly and indirectly, through health-specific self-efficacy. There was a chance that the health locus of control had a negative effect on healthy lifestyle behaviors through self-efficacy. Health-specific self-efficacy is an important prerequisite for changes in healthy lifestyle behaviors, which supports Pender's model. The subscales of the health locus of control vary in their effects on healthy lifestyle behaviors, which partly supports Pender's model. Nurses, by using this model, can examine ways of improving these cognitive-perceptual factors and implement health education programs that are directed towards improving them in young persons. © 2016 Japan Academy of Nursing Science.

  18. Perceived Academic Control and Academic Emotions Predict Undergraduate University Student Success: Examining Effects on Dropout Intention and Achievement.

    Science.gov (United States)

    Respondek, Lisa; Seufert, Tina; Stupnisky, Robert; Nett, Ulrike E

    2017-01-01

    The present study addressed concerns over the high risk of university students' academic failure. It examined how perceived academic control and academic emotions predict undergraduate students' academic success, conceptualized as both low dropout intention and high achievement (indicated by GPA). A cross-sectional survey was administered to 883 undergraduate students across all disciplines of a German STEM orientated university. The study additionally compared freshman students ( N = 597) vs. second-year students ( N = 286). Using structural equation modeling, for the overall sample of undergraduate students we found that perceived academic control positively predicted enjoyment and achievement, as well as negatively predicted boredom and anxiety. The prediction of dropout intention by perceived academic control was fully mediated via anxiety. When taking perceived academic control into account, we found no specific impact of enjoyment or boredom on the intention to dropout and no specific impact of all three academic emotions on achievement. The multi-group analysis showed, however, that perceived academic control, enjoyment, and boredom among second-year students had a direct relationship with dropout intention. A major contribution of the present study was demonstrating the important roles of perceived academic control and anxiety in undergraduate students' academic success. Concerning corresponding institutional support and future research, the results suggested distinguishing incoming from advanced undergraduate students.

  19. The Effects of Locus of Control on University Students' Mobile Learning Adoption

    Science.gov (United States)

    Hsia, Jung-Wen

    2016-01-01

    Since mobile devices have become cheaper, easily accessible, powerful, and popular and the cost of wireless access has declined gradually, mobile learning (m-learning) has begun to spread rapidly. To further improve the effectiveness and efficiency of m-learning for university students, it is critical to understand whether they use m-learning.…

  20. Universal microcomputer ABM 80 for data processing and measurement devices control

    International Nuclear Information System (INIS)

    Jagiello, S.; Kozminski, A.; Plominski, M.; Rzymkowski, K.

    1983-01-01

    The main features of the universal microcomputer ABM-80 with microprocessor INTEL 8080 are described. ABM-80 works with the measurer AZAR and the register ERD-102 or with other equipment with similar input/output parameters. Monitor program is an integral part of the microcomputer. (author)

  1. “Shifting in” migration control. Universalism and immigration in Costa Rica

    NARCIS (Netherlands)

    K. Voorend (Koen)

    2013-01-01

    textabstractWhen the Caja Costarricense de Seguro Social (CCSS), the flagship institution of Costa Rica’s ‘exceptional’ -solidary and universal- social policy regime, entered in financial crisis in 2011, the already difficult social integration of Nicaraguan immigrants in Costa Rica became even more

  2. Development and pilot evaluation of an online psychoeducational program for suicide prevention among university students: A randomised controlled trial

    Directory of Open Access Journals (Sweden)

    Jin Han

    2018-06-01

    Full Text Available Introduction: Suicide is the second leading cause of death for the university aged population globally. A significant proportion of students with suicidal ideation or behaviours do not seek professional help. Few primary suicide prevention programs have specifically targeted help seeking for suicidal ideation or behaviours among university students. Methods: This study reported the development and pilot test of a brief, two-module online psychoeducational program (ProHelp that aimed to encourage help seeking for suicidal ideation and behaviours among university students. The program consists of two five-minute modules that address the risk factors and warning signs of suicide, stigmatising attitudes, and perceived barriers to help seeking. 156 Chinese university students and 101 Australian university students were recruited to evaluate the effectiveness of this program at post-test and one-month follow-up. Participants were randomly assigned to the psychoeducational program or an attention control program. Results: Of the Chinese and Australian students who were randomised into the study, around 50% completed the two­day post­test survey, and 30% completed the one-month follow­up survey. Although no significant difference was found between the control and experimental group on professional help-seeking beliefs and intentions, both groups' help-seeking attitudes increased during the study (p=0.003 for the post­test survey, and p=0.008 for the follow­up survey. The experimental group in both countries demonstrated a significant improvement in suicide literacy at the post-test survey (p=0.015 compared to control. Qualitative feedback indicated that the ProHelp program was user-friendly, clear, and helpful. Conclusions: This study provides initial evidence that a brief online psychoeducational program could enhance university students' suicide literacy in both China and Australia. It also suggests that increasing suicide literacy might not be

  3. Combining a Multi-Agent System and Communication Middleware for Smart Home Control: A Universal Control Platform Architecture

    OpenAIRE

    Song Zheng; Qi Zhang; Rong Zheng; Bi-Qin Huang; Yi-Lin Song; Xin-Chu Chen

    2017-01-01

    In recent years, the smart home field has gained wide attention for its broad application prospects. However, families using smart home systems must usually adopt various heterogeneous smart devices, including sensors and devices, which makes it more difficult to manage and control their home system. How to design a unified control platform to deal with the collaborative control problem of heterogeneous smart devices is one of the greatest challenges in the current smart home field. The main ...

  4. Prevention programs for body image and eating disorders on University campuses: a review of large, controlled interventions.

    Science.gov (United States)

    Yager, Zali; O'Dea, Jennifer A

    2008-06-01

    Body dissatisfaction, dieting, eating disorders and exercise disorders are prevalent among male and female university students worldwide. Male students are also increasingly adopting health-damaging, body-image-related behaviors such as excessive weight lifting, body building and steroid abuse. Given the severity and difficulty of treating eating disorders, prevention of these problems is a recognized public health goal. Health promotion and health education programs have been conducted in the university setting since the mid 1980s, but few have achieved significant improvements in target health attitudes and behaviors. In this paper, 27 large, randomized and controlled health promotion and health education programs to improve body dissatisfaction, dieting and disordered eating and exercise behaviors of male and female college students are reviewed. In general, health education programs to improve body image and prevent eating disorders in the university setting have been limited by small sample sizes and the exclusion of male students. The majority of studies were conducted among either female undergraduate psychology students or women that were recruited using on-campus advertising. The latter reduces the ability to generalize results to the whole university population, or the general community. In addition, there has been a paucity of longitudinal studies that are methodologically sound, as only 82% (22/27) of interventions included in the review used random assignment of groups, and only 52% (n = 14) included follow-up testing. Information-based, cognitive behavioral and psycho-educational approaches have been the least effective at improving body image and eating problems among university students. Successful elements for future initiatives are identified as taking a media literacy- and dissonance-based educational approach, incorporating health education activities that build self-esteem, and using computers and the internet as a delivery medium. A newly

  5. Universal control and measuring system for modern classic and amorphous magnetic materials single/on-line strip testers

    Science.gov (United States)

    Zemánek, Ivan; Havlíček, Václav

    2006-09-01

    A new universal control and measuring system for classic and amorphous soft magnetic materials single/on-line strip testing has been developed at the Czech Technical University in Prague. The measuring system allows to measure magnetization characteristic and specific power losses of different tested materials (strips) at AC magnetization of arbitrary magnetic flux density waveform at wide range of frequencies 20 Hz-20 kHz. The measuring system can be used for both single strip testing in laboratories and on-line strip testing during the production process. The measuring system is controlled by two-stage master-slave control system consisting of the external PC (master) completed by three special A/D measuring plug-in boards, and local executing control unit (slave) with one-chip microprocessor 8051, connected with PC by the RS232 serial line. The "user friendly" powerful control software implemented on the PC and the effective program code for the microprocessor give possibility for full automatic measurement with high measuring power and high measuring accuracy.

  6. A synthetic computational environment: To control the spread of respiratory infections in a virtual university

    Science.gov (United States)

    Ge, Yuanzheng; Chen, Bin; liu, Liang; Qiu, Xiaogang; Song, Hongbin; Wang, Yong

    2018-02-01

    Individual-based computational environment provides an effective solution to study complex social events by reconstructing scenarios. Challenges remain in reconstructing the virtual scenarios and reproducing the complex evolution. In this paper, we propose a framework to reconstruct a synthetic computational environment, reproduce the epidemic outbreak, and evaluate management interventions in a virtual university. The reconstructed computational environment includes 4 fundamental components: the synthetic population, behavior algorithms, multiple social networks, and geographic campus environment. In the virtual university, influenza H1N1 transmission experiments are conducted, and gradually enhanced interventions are evaluated and compared quantitatively. The experiment results indicate that the reconstructed virtual environment provides a solution to reproduce complex emergencies and evaluate policies to be executed in the real world.

  7. The United Nations Global Compact Progress Reports as Management Control Instruments for Social Responsibility at Spanish Universities

    Directory of Open Access Journals (Sweden)

    Amber Wigmore-Álvarez

    2014-04-01

    Full Text Available Sustainability and social responsibility (SR have emerged as a new way of managing all types of organizations. It is necessary that the resulting policy be integrated transversely in the control processes. The environment is especially demanding of higher education institutions (HEIs and universities when it comes to behaving in a socially responsible manner due to their great influence in society. Many universities have adhered to the United Nations Global Compact (UNGC principles to prove their commitment and gain legitimacy. The Communication on Progress (COP is a management tool that helps to understand the level of implementation of the principles. Furthermore, COP analysis aids in establishing a process of continuous improvement in the management of the impacts that institutions have on their stakeholders. The aim of this study was to analyze the Spanish universities that have joined the Global Compact. Through a descriptive methodology, we identified the aspects that reflect this commitment and how this is integrated into their operational and educational processes. The results have shown that it is necessary to promote the integration of different international initiatives to guide the SR of universities. There are deficiencies in their SR management systems that prevent them from being more transparent, and it was found that in some cases, they are not aware of the implications the commitment can have in developed countries.

  8. Hybrid clustering based fuzzy structure for vibration control - Part 1: A novel algorithm for building neuro-fuzzy system

    Science.gov (United States)

    Nguyen, Sy Dzung; Nguyen, Quoc Hung; Choi, Seung-Bok

    2015-01-01

    This paper presents a new algorithm for building an adaptive neuro-fuzzy inference system (ANFIS) from a training data set called B-ANFIS. In order to increase accuracy of the model, the following issues are executed. Firstly, a data merging rule is proposed to build and perform a data-clustering strategy. Subsequently, a combination of clustering processes in the input data space and in the joint input-output data space is presented. Crucial reason of this task is to overcome problems related to initialization and contradictory fuzzy rules, which usually happen when building ANFIS. The clustering process in the input data space is accomplished based on a proposed merging-possibilistic clustering (MPC) algorithm. The effectiveness of this process is evaluated to resume a clustering process in the joint input-output data space. The optimal parameters obtained after completion of the clustering process are used to build ANFIS. Simulations based on a numerical data, 'Daily Data of Stock A', and measured data sets of a smart damper are performed to analyze and estimate accuracy. In addition, convergence and robustness of the proposed algorithm are investigated based on both theoretical and testing approaches.

  9. A universal setup for active control of a single-photon detector

    International Nuclear Information System (INIS)

    Liu, Qin; Skaar, Johannes; Lamas-Linares, Antía; Kurtsiefer, Christian; Makarov, Vadim; Gerhardt, Ilja

    2014-01-01

    The influence of bright light on a single-photon detector has been described in a number of recent publications. The impact on quantum key distribution (QKD) is important, and several hacking experiments have been tailored to fully control single-photon detectors. Special attention has been given to avoid introducing further errors into a QKD system. We describe the design and technical details of an apparatus which allows to attack a quantum-cryptographic connection. This device is capable of controlling free-space and fiber-based systems and of minimizing unwanted clicks in the system. With different control diagrams, we are able to achieve a different level of control. The control was initially targeted to the systems using BB84 protocol, with polarization encoding and basis switching using beamsplitters, but could be extended to other types of systems. We further outline how to characterize the quality of active control of single-photon detectors

  10. A universal setup for active control of a single-photon detector

    Energy Technology Data Exchange (ETDEWEB)

    Liu, Qin; Skaar, Johannes [Department of Electronics and Telecommunications, Norwegian University of Science and Technology, NO-7491 Trondheim (Norway); Lamas-Linares, Antía; Kurtsiefer, Christian [Centre for Quantum Technologies and Department of Physics, National University of Singapore, 3 Science Drive 2, Singapore 117543 (Singapore); Makarov, Vadim, E-mail: makarov@vad1.com [Institute for Quantum Computing and Department of Physics and Astronomy, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1 (Canada); Gerhardt, Ilja, E-mail: ilja@quantumlah.org [Max Planck Institute for Solid State Research, Heisenbergstraße 1, D-70569 Stuttgart (Germany)

    2014-01-15

    The influence of bright light on a single-photon detector has been described in a number of recent publications. The impact on quantum key distribution (QKD) is important, and several hacking experiments have been tailored to fully control single-photon detectors. Special attention has been given to avoid introducing further errors into a QKD system. We describe the design and technical details of an apparatus which allows to attack a quantum-cryptographic connection. This device is capable of controlling free-space and fiber-based systems and of minimizing unwanted clicks in the system. With different control diagrams, we are able to achieve a different level of control. The control was initially targeted to the systems using BB84 protocol, with polarization encoding and basis switching using beamsplitters, but could be extended to other types of systems. We further outline how to characterize the quality of active control of single-photon detectors.

  11. Cost-Effective Control Systems for Colleges and Universities: A New Paradigm.

    Science.gov (United States)

    Hubbell, Loren Loomis; Dougherty, Jennifer Dowling

    This report addresses the issue of maintaining adequate controls within a streamlined or restructured financial affairs environment at an institution of higher education. It presents a new paradigm for control structures designed to more effectively meet administrators' needs--both in terms of cost and risk management. The first section: (1)…

  12. Interactive Virtual Reactor and Control Room for Education and Training at Universities and Nuclear Power Plants

    International Nuclear Information System (INIS)

    Satoh, Yoshinori; Li, Ye; Zhu, Xuefeng; Rizwan, Uddin

    2014-01-01

    Efficient and effective education and training of nuclear engineering students and nuclear workers are critical for the safe operation and maintenance of nuclear power plants. With an eye toward this need, we have focused on the development of 3D models of virtual labs for education, training as well as to conduct virtual experiments. These virtual labs, that are expected to supplement currently available resources, and have the potential to reduce the cost of education and training, are most easily developed on game-engine platforms. We report some recent extensions to the virtual model of the University of Illinois TRIGA reactor

  13. Interactive Virtual Reactor and Control Room for Education and Training at Universities and Nuclear Power Plants

    Energy Technology Data Exchange (ETDEWEB)

    Satoh, Yoshinori; Li, Ye; Zhu, Xuefeng; Rizwan, Uddin [University of Illinois, Urbana (United States)

    2014-08-15

    Efficient and effective education and training of nuclear engineering students and nuclear workers are critical for the safe operation and maintenance of nuclear power plants. With an eye toward this need, we have focused on the development of 3D models of virtual labs for education, training as well as to conduct virtual experiments. These virtual labs, that are expected to supplement currently available resources, and have the potential to reduce the cost of education and training, are most easily developed on game-engine platforms. We report some recent extensions to the virtual model of the University of Illinois TRIGA reactor.

  14. Knowledge discovery about quality of life changes of spinal cord injury patients: clustering based on rules by states.

    Science.gov (United States)

    Gibert, Karina; García-Rudolph, Alejandro; Curcoll, Lluïsa; Soler, Dolors; Pla, Laura; Tormos, José María

    2009-01-01

    In this paper, an integral Knowledge Discovery Methodology, named Clustering based on rules by States, which incorporates artificial intelligence (AI) and statistical methods as well as interpretation-oriented tools, is used for extracting knowledge patterns about the evolution over time of the Quality of Life (QoL) of patients with Spinal Cord Injury. The methodology incorporates the interaction with experts as a crucial element with the clustering methodology to guarantee usefulness of the results. Four typical patterns are discovered by taking into account prior expert knowledge. Several hypotheses are elaborated about the reasons for psychological distress or decreases in QoL of patients over time. The knowledge discovery from data (KDD) approach turns out, once again, to be a suitable formal framework for handling multidimensional complexity of the health domains.

  15. A Centralized Detection of Sinkhole Attacks Based on Energy Level of the Nodes on Cluster-Based Wireless Sensor Networks

    Directory of Open Access Journals (Sweden)

    Merve Nilay Aydın

    2017-10-01

    Full Text Available Wireless Sensor Networks is consist of thousands of small and low-cost devices, which communicate over wireless medium. Due to locating in harsh environment and having limited resources, WSN is prone to various attacks. One of the most dangerous attacks threatening WSN is the sinkhole attack. In this paper, sinkhole attack is modelled on a cluster-based WSN, and a centralized detection algorithm based on the remaining energies of the nodes is proposed. The simulations were run for different values of energy thresholds and various numbers of nodes. The performance of the system was investigated over total energy consumption in the system, the number of packets arrived at base station and true detection rate of the sinkhole node(s. The results showed that the proposed method is energy-efficient and detects the malicious nodes with a 100% accuracy for all number of nodes.

  16. Effectiveness of rotavirus pentavalent vaccine under a universal immunization programme in Israel, 2011-2015: a case-control study.

    Science.gov (United States)

    Muhsen, K; Anis, E; Rubinstein, U; Kassem, E; Goren, S; Shulman, L M; Ephros, M; Cohen, D

    2018-01-01

    The use of rotavirus pentavalent vaccine (RotaTeq ® ) as a sole vaccine within rotavirus universal immunization programmes remains limited. We examined the effectiveness of RotaTeq in preventing rotavirus gastroenteritis (RVGE) hospitalization in Israel, after the introduction of universal immunization against the disease. A test-negative case-control study included age-eligible children for universal RotaTeq immunization (aged 2-59 months, born in 2011-2015). Cases (n = 98) were patients who tested positive for rotavirus by immunochromatography; those who tested negative (n = 628) comprised the control group. Information on rotavirus immunization history was obtained through linkage with a national immunization registry. Vaccination status was compared between cases and controls, adjusted odds ratios (aORs) were obtained from logistic regression models, and vaccine effectiveness calculated as (1 - aOR)*100. Immunization with RotaTeq was less frequent in RVGE cases (73.5%) than in controls (90.1%), p < 0.001; this association persisted after controlling for potential confounders. Effectiveness of the complete vaccine series was estimated at 77% (95% confidence interval (CI): 49-90) in children aged 6-59 months, and 86% (95% CI: 65-94) in children aged 6-23 months; whereas for the incomplete series, the respective estimates were 72% (95% CI: 28-89) and 75% (95% CI: 30-91). Vaccine effectiveness was estimated at 79% (95% CI: 45-92) against G1P[8]-associated RVGE hospitalizations and 69% (95% CI: 11-89) against other genotype-RVGE hospitalizations. High effectiveness of RotaTeq as the sole rotavirus vaccine in a universal immunization programme was demonstrated in a high-income country. Although partial vaccination conferred protection, completing the vaccine series is warranted to maximize the benefit. Copyright © 2017 European Society of Clinical Microbiology and Infectious Diseases. Published by Elsevier Ltd. All rights reserved.

  17. Universal adaptive torque control for PM motors for field-weakening region operation

    Science.gov (United States)

    Royak, Semyon [Beachwood, OH; Harbaugh, Mark M [Richfield, OH; Breitzmann, Robert J [South Russel, OH; Nondahl, Thomas A [Wauwatosa, WI; Schmidt, Peter B [Franklin, WI; Liu, Jingbo [Milwaukee, WI

    2011-03-29

    The invention includes a motor controller and method for controlling a permanent magnet motor. In accordance with one aspect of the present technique, a permanent magnet motor is controlled by, among other things, receiving a torque command, determining a normalized torque command by normalizing the torque command to a characteristic current of the motor, determining a normalized maximum available voltage, determining an inductance ratio of the motor, and determining a direct-axis current based upon the normalized torque command, the normalized maximum available voltage, and the inductance ratio of the motor.

  18. Device and method to enhance availability of cluster-based processing systems

    Science.gov (United States)

    Lupia, David J. (Inventor); Ramos, Jeremy (Inventor); Samson, Jr., John R. (Inventor)

    2010-01-01

    An electronic computing device including at least one processing unit that implements a specific fault signal upon experiencing an associated fault, a control unit that generates a specific recovery signal upon receiving the fault signal from the at least one processing unit, and at least one input memory unit. The recovery signal initiates specific recovery processes in the at least one processing unit. The input memory buffers input data signals input to the at least one processing unit that experienced the fault during the recovery period.

  19. Trends and causes of maternal mortality in Jimma University Specialized Hospital, southwest Ethiopia: a matched case–control study

    Directory of Open Access Journals (Sweden)

    Legesse T

    2017-05-01

    Full Text Available Tegene Legesse,1 Misra Abdulahi,2 Anteneh Dirar2 1Department of Public Health, Collage of Health Science, Mizan-Tepi University, Mizan Teferi, Ethiopia; 2Department of Population and Family Health, College of Health Sciences, Jimma University, Jimma, Oromia Regional State, Ethiopia Introduction: Measures of maternal death are fundamental to a country’s health and development status. In developing countries, it remains a daunting and largely unmet public health challenge. There were two studies completed over 10 years ago in Jimma University Specialized Hospital to identify trends, but recently there have been many changes in Ethiopia to reduce maternal death. Therefore, it is important to track the achievements made in Ethiopia in the context of Jimma University Specialized Hospital. No study undertaken in the country has quantified deaths of women from specific causes after controlling confounders.Objective: To assess trends and causes of maternal death in Jimma University Specialized Hospital, southwest Ethiopia.Methods: A time-matched case–control study was conducted on 600 (120 cases and 480 controls females who utilized obstetrics and gynecology services from January 2010 to December 2014. To observe trends in maternal death, maternal mortality ratio was calculated for each year. Stata version 13 was used to analyze causal inference using propensity score matching method.Results: Maternal mortality ratio was 857/100,000 and had a decreasing trend from it’s highest in 2010 of 1,873/100,000 to it’s lowest of 350/100,000 in 2014. The leading cause of maternal death was hemorrhage (54% (β=0.477, 95% confidence interval [CI]: 0.307, 0.647, followed by pregnancy-induced hypertension (20% (β=0.232, 95% CI: 0.046, 0.419, and anemia (12% (β=0.110, 95% CI: 0.017, 0.204.Conclusion: There is a decreasing trend of maternal death. Hemorrhage was the major cause of death identified in each year of study. Keywords: maternal death, maternal

  20. Performance Analysis of a Cluster-Based MAC Protocol for Wireless Ad Hoc Networks

    Directory of Open Access Journals (Sweden)

    Jesús Alonso-Zárate

    2010-01-01

    Full Text Available An analytical model to evaluate the non-saturated performance of the Distributed Queuing Medium Access Control Protocol for Ad Hoc Networks (DQMANs in single-hop networks is presented in this paper. DQMAN is comprised of a spontaneous, temporary, and dynamic clustering mechanism integrated with a near-optimum distributed queuing Medium Access Control (MAC protocol. Clustering is executed in a distributed manner using a mechanism inspired by the Distributed Coordination Function (DCF of the IEEE 802.11. Once a station seizes the channel, it becomes the temporary clusterhead of a spontaneous cluster and it coordinates the peer-to-peer communications between the clustermembers. Within each cluster, a near-optimum distributed queuing MAC protocol is executed. The theoretical performance analysis of DQMAN in single-hop networks under non-saturation conditions is presented in this paper. The approach integrates the analysis of the clustering mechanism into the MAC layer model. Up to the knowledge of the authors, this approach is novel in the literature. In addition, the performance of an ad hoc network using DQMAN is compared to that obtained when using the DCF of the IEEE 802.11, as a benchmark reference.

  1. The Motion Path Study of Measuring Robot Based on Variable Universe Fuzzy Control

    Directory of Open Access Journals (Sweden)

    Ma Guoqing

    2017-01-01

    Full Text Available For the problem of measuring robot requires a higher positioning, firstly learning about the error overview of the system, analysised the influence of attitude, speed and other factors on systematic errors. Then collected and analyzed the systematic error curve in the track to complete the planning process. The last adding fuzzy control in both cases, by comparing with the original system, can found that the method based on fuzzy control system can significantly reduce the error during the motion.

  2. Mental health promotion of Iranian university students: the effect of self-esteem and health locus of control.

    Science.gov (United States)

    Moshki, M; Amiri, M; Khosravan, S

    2012-10-01

    The purpose of this study was to investigate the effect of self-esteem and health control belief on promoting students' mental health. In so doing, 144 students from two medical universities in the north-east of Iran were recruited into study. They were pair-matched and randomly assigned to case and control groups. The data were collected through Goldberg's General Health Questionnaire-28, Multidimensional Health Locus of Control and Rosenberg's Self-Esteem Scales. The results showed that there were significant differences between the groups before and after the intervention. The external components of health locus of control (chance and powerful others) showed a significant decrease but the internal health locus of control and self-esteem revealed a significant increase after the intervention (P mental health had a significant increase after 3 months of intervention (P control beliefs, self-esteem and mental health promotion of the students. This will require additional monitoring and uninterrupted attempts to be effective. © 2011 Blackwell Publishing.

  3. Study of a new automatic reactor power control for the TRIGA Mark II reactor at University of Pavia

    Energy Technology Data Exchange (ETDEWEB)

    Borio Di Tigliole, A.; Magrotti, G. [Laboratorio Energia Nucleare Applicata (L.E.N.A.), University of Pavia, Via Aselli 41, 27100 (Italy); Cammi, A.; Memoli, V. [Politecnico di Milano, Department of Energy, Nuclear Engineering Division (CeSNEF), Via Ponzio 34/3, 20133 Milano (Italy); Gadan, M. A. [Instrumentation and Control Department, National Atomic Energy Comission of Argentina, University of Pavia (Italy)

    2009-07-01

    The installation of a new Instrumentation and Control (IC) system for the TRIGA Mark-II reactor at University of Pavia has recently been completed in order to assure a safe and continuous reactor operation for the future. The intervention involved nearly the whole IC system and required a channel-by-channel component substitution. One of the most sensitive part of the intervention concerned the Automatic Reactor Power Controller (ARPC) which permits to keep the reactor at an operator-selected power level acting on the control rod devoted to the fine regulation of system reactivity. This controller installed can be set up using different control logics: currently the system is working in relay mode. The main goal of the work presented in this paper is to set up a Proportional-Integral-Derivative (PID) configuration of the new controller installed on the TRIGA reactor of Pavia so as to optimize the response to system perturbations. The analysis have shown that a continuous PID offers generally better results than the relay mode which causes power oscillations with an amplitude of 3% of the nominal power

  4. Effectiveness of a universal health-promoting parenting program: a randomized waitlist-controlled trial of All Children in Focus.

    Science.gov (United States)

    Ulfsdotter, Malin; Enebrink, Pia; Lindberg, Lene

    2014-10-18

    Parenting programs have been highlighted as a way of supporting and empowering parents. As programs designed to promote children's health and well-being are scarce, a new health-promotion program, All Children in Focus, has been developed. The purpose of this trial was to evaluate the potential effectiveness of the program in promoting parental self-efficacy and child health and development, as well as to investigate possible moderators of these outcomes. A multicenter randomized waitlist-controlled trial was conducted. The trial included 621 parents with children aged 3-12 years. Parents were randomized to receive the intervention directly or to join a waitlist control group. Parents completed questionnaires at baseline, 2 weeks after the intervention, and 6 months post-baseline. To evaluate potential effects of the program, as well as any moderating variables, multilevel modeling with a repeated-measures design was applied. Parents in the intervention group reported that their self-efficacy (p parents in the control group. One variable was found to moderate both outcomes: parents' positive mental health. Furthermore, parents' educational level and number of children moderated parental self-efficacy, while the children's age moderated child health and development. Having a poor positive mental health, a university-level education, more than one child in the family, and older children, made the families benefit more. In the first randomized controlled trial of All Children in Focus, we found that the program appears to promote both parental self-efficacy and children's health and development in a general population. Additionally, we found that families may benefit differently depending on their baseline characteristics. This contributes to an existing understanding of the advantages of offering universal parenting programs as a public health approach to strengthening families. However, further research is needed to investigate long-term effects and mediating

  5. The Role of Internal Control as a Part of Internal Audit in Implementation as the Legal Service Agency (Case Study in Haluoleo University, Indonesia)

    OpenAIRE

    Nitri Mirosea; Hasbudin

    2012-01-01

    The report analyses the role of internal control as a part of the internal audit function in Haluoleo University. The aim behind this study is to give conclusion and recommendations to improve the performance of internal audit unit in order to support the good governance of the university. The recommendation if delivered can be a strong contribution of strength for the university to add value and for the responsibility to the stakeholders. The research was delivered through questionnaires, in...

  6. Mental health first aid training for nursing students: a protocol for a pragmatic randomised controlled trial in a large university.

    Science.gov (United States)

    Crawford, Gemma; Burns, Sharyn K; Chih, Hui Jun; Hunt, Kristen; Tilley, P J Matt; Hallett, Jonathan; Coleman, Kim; Smith, Sonya

    2015-02-19

    The impact of mental health problems and disorders in Australia is significant. Mental health problems often start early and disproportionately affect young people. Poor adolescent mental health can predict educational achievement at school and educational and occupational attainment in adulthood. Many young people attend higher education and have been found to experience a range of mental health issues. The university setting therefore presents a unique opportunity to trial interventions to reduce the burden of mental health problems. Mental Health First Aid (MHFA) aims to train participants to recognise symptoms of mental health problems and assist an individual who may be experiencing a mental health crisis. Training nursing students in MHFA may increase mental health literacy and decrease stigma in the student population. This paper presents a protocol for a trial to examine the efficacy of the MHFA training for students studying nursing at a large university in Perth, Western Australia. This randomised controlled trial will follow the CONSORT guidelines. Participants will be randomly allocated to the intervention group (receiving a MHFA training course comprising two face to face 6.5 hour sessions run over two days during the intervention period) or a waitlisted control group (not receiving MHFA training during the study). The source population will be undergraduate nursing students at a large university located in Perth, Western Australia. Efficacy of the MHFA training will be assessed by following the intention-to-treat principle and repeated measures analysis. Given the known burden of mental health disorders among student populations, it is important universities consider effective strategies to address mental health issues. Providing MHFA training to students offers the advantage of increasing mental health literacy, among the student population. Further, students trained in MHFA are likely to utilise these skills in the broader community, when they

  7. Universal mechanisms of sound production and control in birds and mammals

    DEFF Research Database (Denmark)

    Elemans, Coen; Rasmussen, Jeppe Have; Herbst, Christian T.

    2015-01-01

    As animals vocalize, their vocal organ transforms motor commands into vocalizations for social communication. In birds, the physical mechanisms by which vocalizations are produced and controlled remain unresolved because of the extreme difficulty in obtaining in vivo measurements. Here, we...... learning and is common to MEAD sound production across birds and mammals, including humans....

  8. A universal gyroscope driving circuit with 70dB amplitude control range

    KAUST Repository

    Abdelghany, Mohamed A.

    2010-08-01

    A CMOS variable gain driving circuit with output signal amplitude control for gyroscopes with wide range of quality factors is presented. The driving circuit can be used for gyroscopes with Q values higher than 500. The circuit uses a current-commutating switching mixer to control the gyroscope driving signal level. Conventional driving circuits use automatic gain control (AGC) which suffers from limited linear range and the need for an off-chip capacitor for the peak detector and loop filter. Two stage variable gain amplifier is used in the proposed design to ensure enough gain for oscillation for such a wide range of quality factors. Analog and digital amplitude control methods are used to cover wide range of driving signal amplitude with enough accuracy to hit the maximum driving signal level without sacrificing gyroscope linearity. Due to the high DC gain of the amplifier chain, DC offset resulting from mismatches might saturate the amplifier output. DC offset correction is employed using a secondary negative feedback loop. The proposed driving circuit is being fabricated in 0.6μm CMOS technology. © 2010 IEEE.

  9. Comparisons of Belief-Based Personality Constructs in Polish and American University Students: Paranormal Beliefs, Locus of Control, Irrational Beliefs, and Social Interest.

    Science.gov (United States)

    Tobacyk, Jerome J.; Tobacyk, Zofia Socha

    1992-01-01

    Uses Social Learning Theory to compare 149 university students from Poland with 136 university students from the southern United States for belief-based personality constructs and personality correlates of paranormal beliefs. As hypothesized, Poles reported a more external locus of control and significantly greater endorsement of irrational…

  10. Towards a Universal Approach Based on Omics Technologies for the Quality Control of Food.

    Science.gov (United States)

    Ferri, Emanuele; Galimberti, Andrea; Casiraghi, Maurizio; Airoldi, Cristina; Ciaramelli, Carlotta; Palmioli, Alessandro; Mezzasalma, Valerio; Bruni, Ilaria; Labra, Massimo

    2015-01-01

    In the last decades, food science has greatly developed, turning from the consideration of food as mere source of energy to a growing awareness on its importance for health and particularly in reducing the risk of diseases. Such vision led to an increasing attention towards the origin and quality of raw materials as well as their derived food products. The continuous advance in molecular biology allowed setting up efficient and universal omics tools to unequivocally identify the origin of food items and their traceability. In this review, we considered the application of a genomics approach known as DNA barcoding in characterizing the composition of foodstuffs and its traceability along the food supply chain. Moreover, metabolomics analytical strategies based on Nuclear Magnetic Resonance (NMR) and Mass Spectroscopy (MS) were discussed as they also work well in evaluating food quality. The combination of both approaches allows us to define a sort of molecular labelling of food that is easily understandable by the operators involved in the food sector: producers, distributors, and consumers. Current technologies based on digital information systems such as web platforms and smartphone apps can facilitate the adoption of such molecular labelling.

  11. Towards a Universal Approach Based on Omics Technologies for the Quality Control of Food

    Directory of Open Access Journals (Sweden)

    Emanuele Ferri

    2015-01-01

    Full Text Available In the last decades, food science has greatly developed, turning from the consideration of food as mere source of energy to a growing awareness on its importance for health and particularly in reducing the risk of diseases. Such vision led to an increasing attention towards the origin and quality of raw materials as well as their derived food products. The continuous advance in molecular biology allowed setting up efficient and universal omics tools to unequivocally identify the origin of food items and their traceability. In this review, we considered the application of a genomics approach known as DNA barcoding in characterizing the composition of foodstuffs and its traceability along the food supply chain. Moreover, metabolomics analytical strategies based on Nuclear Magnetic Resonance (NMR and Mass Spectroscopy (MS were discussed as they also work well in evaluating food quality. The combination of both approaches allows us to define a sort of molecular labelling of food that is easily understandable by the operators involved in the food sector: producers, distributors, and consumers. Current technologies based on digital information systems such as web platforms and smartphone apps can facilitate the adoption of such molecular labelling.

  12. Towards a Universal Approach Based on Omics Technologies for the Quality Control of Food

    Science.gov (United States)

    Ferri, Emanuele; Airoldi, Cristina; Ciaramelli, Carlotta; Palmioli, Alessandro; Bruni, Ilaria

    2015-01-01

    In the last decades, food science has greatly developed, turning from the consideration of food as mere source of energy to a growing awareness on its importance for health and particularly in reducing the risk of diseases. Such vision led to an increasing attention towards the origin and quality of raw materials as well as their derived food products. The continuous advance in molecular biology allowed setting up efficient and universal omics tools to unequivocally identify the origin of food items and their traceability. In this review, we considered the application of a genomics approach known as DNA barcoding in characterizing the composition of foodstuffs and its traceability along the food supply chain. Moreover, metabolomics analytical strategies based on Nuclear Magnetic Resonance (NMR) and Mass Spectroscopy (MS) were discussed as they also work well in evaluating food quality. The combination of both approaches allows us to define a sort of molecular labelling of food that is easily understandable by the operators involved in the food sector: producers, distributors, and consumers. Current technologies based on digital information systems such as web platforms and smartphone apps can facilitate the adoption of such molecular labelling. PMID:26783518

  13. Reactivity worth measurement of the control blades of the University of Florida training reactor

    International Nuclear Information System (INIS)

    Quintero-Leyva, Barbaro

    1997-01-01

    A series of experiments were carried out in order to measure the reactivity worth of the safety and regulating blades of the University of Florida Training Reactor (UFTR) using the Inverse Kinetics, the Inverse Kinetics-Rod Drop method and the Power Ratio. The reactor's own instrumentation (compensated ion chamber) and an independent counting system (fission chamber) were used. A very smooth exponential decay of the flux was observed after 6s of the beginning of the transients using the reading of the reactor detector. The results of the measurements of the reactivity using both detectors were consistent and in good agreement. The compensated ion chamber showed a very smooth exponential behavior; this suggests that if we could record the power for a small sample time, say 0.1 s from the beginning of the transient, several additional research projects could be accomplished. First, precise intercomparison of the methods could be achieved if the statistics level is acceptable. Second, a precise description of the bouncing of the blades and its effects on the reactivity could be achieved. Finally, the design of a reactivity-meter could be based on such study. (author)

  14. [Stages of change related to fruit and vegetables consumption, physical activity, and weight control in Chilean university students].

    Science.gov (United States)

    Mardones H, María Angélica; Olivares C, Sonia; Araneda F, Jacqueline; Gómez F, Nelly

    2009-09-01

    In order to design effective health promotion interventions, nutritional status and the stages of change related to the consumption of fruit and vegetables, physical activity, and weight control were determined in 955 students of both genders at the University of Bio-Bio, Chile. The sample was randomly selected by campus, faculty, and career, with a level of confidence of 95% and a maximum error of 3%. Beside the descriptive analysis, to evaluate the association among nutritional status, fruit and vegetables consumption, physical activity and weight control, Chi2 test was applied. Nutritional status was determined by Body Mass Index and WHO reference standards for adults. A questionnaire previously validated by INTA was applied to evaluate the stages of change. The prevalence of overweight and obesity reached 48.2% in men and 25.5% in women (pphysical activity regularly (pphysical activity.

  15. Mindfulness-Based Stress Release Program for University Employees: A Pilot, Waitlist-Controlled Trial and Implementation Replication.

    Science.gov (United States)

    Koncz, Rebecca; Wolfenden, Fiona; Hassed, Craig; Chambers, Richard; Cohen, Julia; Glozier, Nicholas

    2016-10-01

    The aim of this study was to evaluate the effectiveness of a 6-week mindfulness-based stress release program (SRP) on stress and work engagement in fulltime university employees. Perceived stress, workplace wellbeing, and engagement were measured at baseline and within 1 week of the SRP completion, and contemporaneously 6 weeks apart for a waitlist control group. A second program was implemented to examine reproducibility of results. Fifty participants undertook the SRPs, and 29 participants were waitlisted. A significant improvement in distress, workplace wellbeing, and vigor was observed within the first SRP group, when compared with the control group. The improvement in distress and wellbeing was reproduced in the second SRP group. This study adds to the growing body of research that mindfulness may be an effective method for reducing workplace stress, improving employee wellbeing, and enhancing work engagement.

  16. Effect of Simulation on the Confidence of University Nursing Students in Applying Cardiopulmonary Assessment Skills: A Randomized Controlled Trial.

    Science.gov (United States)

    Tawalbeh, Loai I

    2017-08-01

    Simulation is an effective teaching strategy. However, no study in Jordan has examined the effect of simulation on the confidence of university nursing students in applying heart and lung physical examination skills. The current study aimed to test the effect of simulation on the confidence of university nursing students in applying heart and lung physical examination skills. A randomized controlled trial design was applied. The researcher introduced the simulation scenario regarding cardiopulmonary examination skills. This scenario included a 1-hour PowerPoint presentation and video for the experimental group (n= 35) and a PowerPoint presentation and a video showing a traditional demonstration in the laboratory for the control group (n = 34). Confidence in applying cardiopulmonary physical examination skills was measured for both groups at baseline and at 1 day and 3 months posttest. A paired t test showed that confidence was significantly higher in the posttest than in the pretest for both groups. An independent t test showed a statistically significant difference (t(67) = -42.95, p skills. Both simulation and traditional training in the laboratory significantly improved the confidence of participants in applying cardiopulmonary assessment skills. However, the simulation training had a more significant effect than usual training in enhancing the confidence of nursing students in applying physical examination skills.

  17. Short message service (SMS)-based intervention targeting alcohol consumption among university students: study protocol of a randomized controlled trial.

    Science.gov (United States)

    Thomas, Kristin; Bendtsen, Marcus; Linderoth, Catharina; Karlsson, Nadine; Bendtsen, Preben; Müssener, Ulrika

    2017-04-04

    Despite significant health risks, heavy drinking of alcohol among university students is a widespread problem; excessive drinking is part of the social norm. A growing number of studies indicate that short message service (SMS)-based interventions are cost-effective, accessible, require limited effort by users, and can enable continuous, real-time, brief support in real-world settings. Although there is emerging evidence for the effect of SMS-based interventions in reducing alcohol consumption, more research is needed. This study aims to test the effectiveness of a newly developed SMS-based intervention targeting excessive alcohol consumption among university and college students in Sweden. The study is a two-arm randomized controlled trial with an intervention (SMS programme) and a control (treatment as usual) group. Outcome measures will be investigated at baseline and at 3-month follow up. The primary outcome is total weekly alcohol consumption. Secondary outcomes are frequency of heavy episodic drinking, highest estimated blood alcohol concentration and number of negative consequences due to excessive drinking. This study contributes knowledge on the effect of automatized SMS support to reduce excessive drinking among students compared with existing support such as Student Health Centres. ISRCTN.com, ISRCTN95054707 . Registered on 31 August 2016.

  18. Arbitrary quantum control of qubits in the presence of universal noise

    CSIR Research Space (South Africa)

    Green, TJ

    2013-09-01

    Full Text Available treatment of decoherence: the error vector and control matrix . . . . 7 2.4. Magnus expansion of the error vector . . . . . . . . . . . . . . . . . . . . . . 7 3. Operational fidelity 9 3.1. Moving to the Fourier domain... . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 5.4. The full filter functions: dynamical decoupling+DCG . . . . . . . . . . . . . . 17 6. Limits of approximation 19 6.1. Convergence of the Magnus expansion . . . . . . . . . . . . . . . . . . . . . . 19 6.2. Numerical simulations and the first...

  19. 6 June 2008 - Chancellor F. Tomàs Vert, University of Valencia, visiting ATLAS control room and experimental area with Collaboration Spokesperson P. Jenni.

    CERN Multimedia

    Mona Schweizer

    2008-01-01

    6 June 2008 - Chancellor F. Tomàs Vert, University of Valencia, visiting ATLAS control room and experimental area with Collaboration Spokesperson P. Jenni. Other participants: Prof. Francisco José Botella, Director, Instituto de Fisica Corpuscular, University of València and CSIC Prof. José Peñarrocha, Dean, Faculty of Physics Prof. Antonio Ferrer, Instituto de Fisica Corpuscular, University of València and CSIC Prof. Antonio Pich, University of València, Member of IFIC (CSIC - Univ. València), Coordinator of CPAN, Spanish National Centre for Particle, Astroparticle and Nuclear Physics.

  20. Projections of Temperature-Attributable Premature Deaths in 209 U.S. Cities Using a Cluster-Based Poisson Approach

    Science.gov (United States)

    Schwartz, Joel D.; Lee, Mihye; Kinney, Patrick L.; Yang, Suijia; Mills, David; Sarofim, Marcus C.; Jones, Russell; Streeter, Richard; St. Juliana, Alexis; Peers, Jennifer; hide

    2015-01-01

    Background: A warming climate will affect future temperature-attributable premature deaths. This analysis is the first to project these deaths at a near national scale for the United States using city and month-specific temperature-mortality relationships. Methods: We used Poisson regressions to model temperature-attributable premature mortality as a function of daily average temperature in 209 U.S. cities by month. We used climate data to group cities into clusters and applied an Empirical Bayes adjustment to improve model stability and calculate cluster-based month-specific temperature-mortality functions. Using data from two climate models, we calculated future daily average temperatures in each city under Representative Concentration Pathway 6.0. Holding population constant at 2010 levels, we combined the temperature data and cluster-based temperature-mortality functions to project city-specific temperature-attributable premature deaths for multiple future years which correspond to a single reporting year. Results within the reporting periods are then averaged to account for potential climate variability and reported as a change from a 1990 baseline in the future reporting years of 2030, 2050 and 2100. Results: We found temperature-mortality relationships that vary by location and time of year. In general, the largest mortality response during hotter months (April - September) was in July in cities with cooler average conditions. The largest mortality response during colder months (October-March) was at the beginning (October) and end (March) of the period. Using data from two global climate models, we projected a net increase in premature deaths, aggregated across all 209 cities, in all future periods compared to 1990. However, the magnitude and sign of the change varied by cluster and city. Conclusions: We found increasing future premature deaths across the 209 modeled U.S. cities using two climate model projections, based on constant temperature

  1. Infection prevention and control and the refugee population: Experiences from the University of Louisville Global Health Center.

    Science.gov (United States)

    Carrico, Ruth M; Goss, Linda; Wiemken, Timothy L; Bosson, Rahel S; Peyrani, Paula; Mattingly, William A; Pauly, Allison; Ford, Rebecca A; Kotey, Stanley; Ramirez, Julio A

    2017-06-01

    During 2016, approximately 140,000 individuals entered the United States as part of the federal government refugee resettlement program and established themselves in communities in virtually every state. No national database regarding refugee health currently exists; therefore, little is known about existing infectious diseases, conditions, and cultural practices that impact successful acculturation. The objective of this report is to identify what is currently known about refugees and circumstances important to infection prevention and control with respect to their roles as new community members, employees, and consumers of health care. Using data from the University of Louisville Global Health Center's Newly Arriving Refugee Surveillance System, health issues affecting refugees from the perspective of a community member, an employee, and a patient were explored. Lack of immunity to vaccine-preventable diseases is the most widespread issue impacting almost every adult, adolescent, and child refugee resettled in Kentucky. Health issues of concern from an infection prevention and control perspective include latent tuberculosis infection, HIV, hepatitis B, hepatitis C, syphilis, and parasites. Other health conditions that may also be important include anemia, obesity, oral health, diabetes, and cardiovascular disease. Refugee resettlement provides motivation for collaborative work among those responsible for infection prevention and control in all settings, their public health partners, and those responsible for and interested in community workforce concerns. Copyright © 2017 Association for Professionals in Infection Control and Epidemiology, Inc. Published by Elsevier Inc. All rights reserved.

  2. Mobile Phone Apps for University Students With Hazardous Alcohol Use: Study Protocol for Two Consecutive Randomized Controlled Trials.

    Science.gov (United States)

    Berman, Anne H; Gajecki, Mikael; Fredriksson, Morgan; Sinadinovic, Kristina; Andersson, Claes

    2015-12-22

    About 50% of university students overconsume alcohol, and drinking habits in later adulthood are to some extent established during higher educational studies. Several studies have demonstrated that Internet-based interventions have positive effects on drinking habits among university students. Our recent study evaluated two mobile phone apps targeting drinking choices at party occasions via personalized feedback on estimated blood alcohol concentration (eBAC) for students with hazardous drinking. No changes in drinking parameters were found over a seven-week period apart from an increase in number of drinking occasions among men for one of the apps tested. Up to 30% of the study participants drank at potentially harmful levels: higher than the national recommended number of standard drinks per week (a maximum of 9 for women and 14 for men) in Sweden. (1) To evaluate improved versions of the two mobile phone apps tested in our prior trial, in a new, 3-armed randomized controlled trial among university students with at least hazardous drinking habits according to the Alcohol Use Disorders Identifications Test (AUDIT; Study 1). (2) After 6 weeks, to target study participants showing alcohol consumption higher than the national recommended levels for standard drinks per week by offering them participation in a second, 2-armed randomized trial evaluating an additional mobile phone app with skill enhancement tasks (Study 2). (3) To follow participants at 6, 12 and 18 weeks after recruitment to Study 1 and at 6 and 12 weeks after recruitment to Study 2. Two randomized controlled trials are conducted. Study 1: Students are recruited at four Swedish universities, via direct e-mail and advertisements on Facebook and student union web sites. Those who provide informed consent, have a mobile phone, and show at least hazardous alcohol consumption according to the AUDIT (≥6 for women; ≥8 points for men) are randomized into three groups. Group 1 has access to the Swedish

  3. Intelligent Universe

    Energy Technology Data Exchange (ETDEWEB)

    Hoyle, F

    1983-01-01

    The subject is covered in chapters, entitled: chance and the universe (synthesis of proteins; the primordial soup); the gospel according to Darwin (discussion of Darwin theory of evolution); life did not originate on earth (fossils from space; life in space); the interstellar connection (living dust between the stars; bacteria in space falling to the earth; interplanetary dust); evolution by cosmic control (microorganisms; genetics); why aren't the others here (a cosmic origin of life); after the big bang (big bang and steady state); the information rich universe; what is intelligence up to; the intelligent universe.

  4. Monitoring and Control Research Using a University Reactor and SBWR Test-Loop

    International Nuclear Information System (INIS)

    Edwards, Robert M.

    2003-01-01

    The existing hybrid simulation capability of the Penn State Breazeale nuclear reactor was expanded to conduct research for monitoring, operations and control. Hybrid simulation in this context refers to the use of the physical time response of the research reactor as an input signal to a real-time simulation of power-reactor thermal-hydraulics which in-turn provides a feedback signal to the reactor through positioning of an experimental changeable reactivity device. An ECRD is an aluminum tube containing an absorber material that is positioned in the central themble of the reactor kinetics were used to expand the hybrid reactor simulation (HRS) capability to include out-of-phase stability characteristics observed in operating BWRs

  5. DEVELOPING UNIVERSAL INSTALLATION WITH AUTOMATIC MONITORING AND CONTROL PROCESS OF MIXING, WHIPPING AND MOLDING BISCUIT DOUGH

    Directory of Open Access Journals (Sweden)

    E. I. Ponomareva

    2013-01-01

    Full Text Available As products of high nutritional value can be used bakery products from a mixture of rye and wheat flour with the application of a grain of rye. Use whole grains assumes control of its quality according to organoleptic, physico-chemical and hygienic indices. Method of determining the color characteristics of grain scanner-metric method us-ing tablet scanner HP ScanJet 3570C with application of computer processing of images in RGB color mode is proposed. Application of the method to determine the color characteristics showed that rye, prepared in different ways, has different intensity of coloring, and the maximum intensity of the color components is observed at native grain.

  6. Malignant melanoma and radiotherapy: past myths, excellent local control in 146 studied lesions at Georgetown University, and improving future management

    International Nuclear Information System (INIS)

    Jahanshahi, Pooya; Nasr, Nadim; Unger, Keith; Batouli, Ali; Gagnon, Gregory J.

    2012-01-01

    Introduction: Once thought to be radioresistant, emerging cellular and clinical evidence now suggests melanoma can respond to large radiation doses per fraction. Materials and Methods: We conducted a retrospective study of all patients treated with stereotactic radiosurgery and stereotactic body radiotherapy at Georgetown University Hospital from May 2002 through November 2008 and studied the classic extrapolated total dose corrected for volume (ETD vol ) model for predicting melanoma tumor response. Region-specific tumor outcomes were categorized by RECIST criteria and local control curves were estimated and analyzed when stratified by ETD vol thresholds by use of the Kaplan–Meier method. Results: Follow-up information was available for 78 lesions (49 intracranial, 8 spinal, and 21 body) with mean follow-up period of 9.2 (range, 2–36) months. 1-year local control rates for intracranial, spinal, and body tumors were 84, 100, and 72%, respectively. Treatments in general were well-tolerated. Increased ETD vol (p < 0.001) among intracranial sites resulted from larger (p < 0.001) doses per fraction combined with smaller (p < 0.001) tumor diameters. Intracranial 6-, 12-, and 24-month local control rates when treated above ETD vol threshold of 230 Gy were all 90 vs. 89, 80, and 53% below this threshold. Body 6- and 12-month local control rates when treated above ETD vol threshold of 100 Gy were 100 and 80% vs. 74 and 59% below this threshold. Discussion: By tailoring to melanoma’s unique radiobiology with large radiation doses per fraction, favorable local control was safely achieved. The ETD vol model combines the important factor of dose per fraction in melanoma treatment with a volume correction factor to predict tumor response. Although limited sample size may have prevented reaching statistical significance for local control improvements using ETD vol thresholds, optimal thresholds may exist to improve future tumor responses and further research is required.

  7. Synergy-Based Bilateral Port: A Universal Control Module for Tele-Manipulation Frameworks Using Asymmetric Master-Slave Systems.

    Science.gov (United States)

    Brygo, Anais; Sarakoglou, Ioannis; Grioli, Giorgio; Tsagarakis, Nikos

    2017-01-01

    Endowing tele-manipulation frameworks with the capability to accommodate a variety of robotic hands is key to achieving high performances through permitting to flexibly interchange the end-effector according to the task considered. This requires the development of control policies that not only cope with asymmetric master-slave systems but also whose high-level components are designed in a unified space in abstraction from the devices specifics. To address this dual challenge, a novel synergy port is developed that resolves the kinematic, sensing, and actuation asymmetries of the considered system through generating motion and force feedback references in the hardware-independent hand postural synergy space. It builds upon the concept of the Cartesian-based synergy matrix, which is introduced as a tool mapping the fingertips Cartesian space to the directions oriented along the grasp principal components. To assess the effectiveness of the proposed approach, the synergy port has been integrated into the control system of a highly asymmetric tele-manipulation framework, in which the 3-finger hand exoskeleton HEXOTRAC is used as a master device to control the SoftHand, a robotic hand whose transmission system relies on a single motor to drive all joints along a soft synergistic path. The platform is further enriched with the vision-based motion capture system Optitrack to monitor the 6D trajectory of the user's wrist, which is used to control the robotic arm on which the SoftHand is mounted. Experiments have been conducted with the humanoid robot COMAN and the KUKA LWR robotic manipulator. Results indicate that this bilateral interface is highly intuitive and allows users with no prior experience to reach, grasp, and transport a variety of objects exhibiting very different shapes and impedances. In addition, the hardware and control solutions proved capable of accommodating users with different hand kinematics. Finally, the proposed control framework offers a

  8. Improving cluster-based methods for investigating potential for insect pest species establishment: region-specific risk factors

    Directory of Open Access Journals (Sweden)

    Michael J. Watts

    2011-09-01

    Full Text Available Existing cluster-based methods for investigating insect species assemblages or profiles of a region to indicate the risk of new insect pest invasion have a major limitation in that they assign the same species risk factors to each region in a cluster. Clearly regions assigned to the same cluster have different degrees of similarity with respect to their species profile or assemblage. This study addresses this concern by applying weighting factors to the cluster elements used to calculate regional risk factors, thereby producing region-specific risk factors. Using a database of the global distribution of crop insect pest species, we found that we were able to produce highly differentiated region-specific risk factors for insect pests. We did this by weighting cluster elements by their Euclidean distance from the target region. Using this approach meant that risk weightings were derived that were more realistic, as they were specific to the pest profile or species assemblage of each region. This weighting method provides an improved tool for estimating the potential invasion risk posed by exotic species given that they have an opportunity to establish in a target region.

  9. Cluster-based Reduced-order Modelling of Flow in the Wake of a Seal-vibrissa-shaped Cylinder

    Science.gov (United States)

    Wei, Zheng; Li, Qiliang; Yang, Zhigang; Xia, Chao; Shanghai Automotive Wind Tunnel Center Team

    2017-11-01

    The flow around a seal-vibrissa-shaped cylinder is numerically calculated using large eddy simulation (LES) at the Reynolds number of 20000, along with a smooth and a twisted cylinder for comparison. The mean drag coefficient of the seal-vibrissa-shaped cylinder is lower than that of the smooth and twisted cylinders, respectively. The fluctuating lift coefficient of the seal-vibrissa-shaped cylinder shows a substantial decrease compared with the smooth cylinder. The seal-vibrissa-shaped surface leads to more stable wake, longer vortex formation length, higher base pressure and three-dimensional separation. In addition, cluster-based reduced-order modelling (CROM) is performed to analyze phase-dependent variations of the wake flow, which discloses the complex unsteady behavior in different cross sections. Meanwhile, two flow regimes, anti-phased and in-phase-dominated vortex shedding, generated by the twisted cylinder and the seal-vibrissa-shaped cylinder are distinguished and extracted, their interrelationship are evaluated, and the question how forces are affected is answered. Supported by the National Key Research and Development Program of China (2016YFB1200503-04) and the Shanghai Automotive Wind Tunnel Technical Service Platform (16DZ2290400).

  10. Spin-canting magnetization in an unusual Co4 cluster-based layer compound from a 2,3-dihydroxyquinoxaline ligand.

    Science.gov (United States)

    Yang, Chen-I; Chuang, Po-Hsiang; Lee, Gene-Hsiang; Peng, Shie-Ming; Lu, Kuang-Lieh

    2012-01-16

    The self-assembly of Co(O(2)CPh)(2) with a 2,3-dihydroxyquinoxaline (H(2)dhq) linker has revealed a new two-dimensional cluster-based compound, [Co(4)(OMe)(2)(O(2)CPh)(2)(dhq)(2)(MeOH)(2)](n), which shows spin-canted magnetization and a definite magnetic hysteresis loop.

  11. Feasibility study of the university of Utah TRIGA reactor power upgrade - Part I: Neutronics-based study in respect to control rod system requirements and design

    Directory of Open Access Journals (Sweden)

    Ćutić Avdo

    2013-01-01

    Full Text Available We present a summary of extensive studies in determining the highest achievable power level of the current University of Utah TRIGA core configuration in respect to control rod requirements. Although the currently licensed University of Utah TRIGA power of 100 kW provides an excellent setting for a wide range of experiments, we investigate the possibility of increasing the power with the existing fuel elements and core structure. Thus, we have developed numerical models in combination with experimental procedures so as to assess the potential maximum University of Utah TRIGA power with the currently available control rod system and have created feasibility studies for assessing new core configurations that could provide higher core power levels. For the maximum determined power of a new University of Utah TRIGA core arrangement, a new control rod system was proposed.

  12. M.U.M.M. - a micro-controlled universal message multiplexer

    International Nuclear Information System (INIS)

    Fontaine, G.; Guglielmi, L.; Jaeger, J.J.; Szafran, S.

    1981-01-01

    Based on the Motorola 6800, this multiplexer is designed to provide a microprocessor development tool in the specific environment of a high energy physics laboratory. The basic philosophy of this device is to allow communication of a target (prototype) processor with a host computer under control of a human operator. The host can be an experimental on-line computer or any remote machine with a time-sharing network. It is thus possible to speed up design and debugging of a physics application program by taking advantage of the sophisticated resources usually available in a computer centre (powerful editor, large disk space, source management via 'Patchy' etc...). In addition to the classical cross-macroassembler, a loader is available on the host for down-line loading binary code, via the multiplexer, into the prototype memory. Such a scheme is easily extended to the communication of any host interactive processing program with a data acquisition microprocessor, and provides the latter with a convenient and easily portable extension of its computing power. A typical application of this mode is described in a separate paper. (orig.)

  13. M.U.M.M. - a micro-controlled universal message multiplexer

    CERN Document Server

    Fontaine, G; Jaeger, J J; Szafran, S

    1981-01-01

    Based on the Motorola 6800, this multiplexer is designed to provide a microprocessor development tool in the specific environment of a high- energy physics laboratory. The basic philosophy of this device is to allow communication of a target (prototype) processor with a host computer under control of a human operator. The host can be an experimental online computer or any remote machine with a time-sharing network. It is thus possible to speed up design and debugging of a physics application program by taking advantage of the sophisticated resources usually available in a computer centre (powerful editor, large disk space, source management via 'Patchy', etc.). In addition to the classical cross-macroassembler, a loader is available on the host for down-line loading binary code, via the multiplexer, into the prototype memory. Such a scheme is easily extended to the communication of any host interactive processing program with a data acquisition microprocessor, and provides the latter with a convenient and eas...

  14. Gravitational clustering in the expanding universe - Controlled high-resolution studies in two dimensions

    Science.gov (United States)

    Beacom, John Francis; Dominik, Kurt G.; Melott, Adrian L.; Perkins, Sam P.; Shandarin, Sergei F.

    1991-01-01

    Results are presented from a series of gravitational clustering simulations in two dimensions. These simulations are a significant departure from previous work, since in two dimensions one can have large dynamic range in both length scale and mass using present computer technology. Controlled experiments were conducted by varying the slope of power-law initial density fluctuation spectra and varying cutoffs at large k, while holding constant the phases of individual Fourier components and the scale of nonlinearity. Filaments are found in many different simulations, even with pure power-law initial conditions. By direct comparison, filaments, called 'second-generation pancakes' are shown to arise as a consequence of mild nonlinearity on scales much larger than the correlation length and are not relics of an initial lattice or due to sparse sampling of the Fourier components. Bumps of low amplitude in the two-point correlation are found to be generic but usually only statistical fluctuations. Power spectra are much easier to relate to initial conditions, and seem to follow a simple triangular shape (on log-log plot) in the nonlinear regime. The rms density fluctuation with Gaussian smoothing is the most stable indicator of nonlinearity.

  15. Single cyanide-bridged Mo(W)/S/Cu cluster-based coordination polymers: Reactant- and stoichiometry-dependent syntheses, effective photocatalytic properties

    International Nuclear Information System (INIS)

    Zhang, Jinfang; Wang, Chao; Wang, Yinlin; Chen, Weitao; Cifuentes, Marie P.; Humphrey, Mark G.; Zhang, Chi

    2015-01-01

    The systematic study on the reaction variables affecting single cyanide-bridged Mo(W)/S/Cu cluster-based coordination polymers (CPs) is firstly demonstrated. Five anionic single cyanide-bridged Mo(W)/S/Cu cluster-based CPs {[Pr_4N][WS_4Cu_3(CN)_2]}_n (1), {[Pr_4N][WS_4Cu_4(CN)_3]}_n (2), {[Pr_4N][WOS_3Cu_3(CN)_2]}_n (3), {[Bu_4N][WOS_3Cu_3(CN)_2]}_n (4) and {[Bu_4N][MoOS_3Cu_3(CN)_2]}_n (5) were prepared by varying the molar ratios of the starting materials, and the specific cations, cluster building blocks and central metal atoms in the cluster building blocks. 1 possesses an anionic 3D diamondoid framework constructed from 4-connected T-shaped clusters [WS_4Cu_3]"+ and single CN"− bridges. 2 is fabricated from 6-connected planar ‘open’ clusters [WS_4Cu_4]"2"+ and single CN"− bridges, forming an anionic 3D architecture with an “ACS” topology. 3 and 4 exhibit novel anionic 2-D double-layer networks, both constructed from nest-shaped clusters [WOS_3Cu_3]"+ linked by single CN"− bridges, but containing the different cations [Pr_4N]"+ and [Bu_4N]"+, respectively. 5 is constructed from nest-shaped clusters [MoOS_3Cu_3]"+ and single CN"− bridges, with an anionic 3D diamondoid framework. The anionic frameworks of 1-5, all sustained by single CN"− bridges, are non-interpenetrating and exhibit huge potential void volumes. Employing differing molar ratios of the reactants and varying the cluster building blocks resulted in differing single cyanide-bridged Mo(W)/S/Cu cluster-based CPs, while replacing the cation ([Pr_4N]"+ vs. [Bu_4N]"+) was found to have negligible impact on the nature of the architecture. Unexpectedly, replacement of the central metal atom (W vs. Mo) in the cluster building blocks had a pronounced effect on the framework. Furthermore, the photocatalytic activities of heterothiometallic cluster-based CPs were firstly explored by monitoring the photodegradation of methylene blue (MB) under visible light irradiation, which reveals that 2

  16. Personalised normative feedback for preventing alcohol misuse in university students: Solomon three-group randomised controlled trial.

    Directory of Open Access Journals (Sweden)

    Maria T Moreira

    Full Text Available Young people tend to over-estimate peer group drinking levels. Personalised normative feedback (PNF aims to correct this misperception by providing information about personal drinking levels and patterns compared with norms in similar aged peer groups. PNF is intended to raise motivation for behaviour change and has been highlighted for alcohol misuse prevention by the British Government Behavioural Insight Team. The objective of the trial was to assess the effectiveness of PNF with college students for the prevention of alcohol misuse.Solomon three-group randomised controlled trial. 1751 students, from 22 British Universities, allocated to a PNF group, a normal control group, or a delayed measurement control group to allow assessment of any measurement effects. PNF was provided by email. Participants completed online questionnaires at baseline, 6- and 12-months (only 12-months for the delayed measurement controls. Drinking behaviour measures were (i alcohol disorders; (ii frequency; (iii typical quantity, (iv weekly consumption; (v alcohol-related problems; (vi perceived drinking norms; and (vii positive alcohol expectancies. Analyses focused on high-risk drinkers, as well as all students, because of research evidence for the prevention paradox in student drinkers.Follow-up rates were low, with only 50% and 40% responding at 6- and 12-months, respectively, though comparable to similar European studies. We found no evidence for any systematic attrition bias. Overall, statistical analyses with the high risk sub-sample, and for all students, showed no significant effects of the intervention, at either time-point, in a completed case analysis and a multiple imputation analysis.We found no evidence for the effectiveness of PNF for the prevention of alcohol misuse and alcohol-related problems in a UK student population.Controlled-Trials.com ISRCTN30784467.

  17. Universal real-time control framework and Internet of Things for fast-paced research and development based production environments

    KAUST Repository

    Chaoui, Hicham

    2017-05-13

    This paper introduces a universal real-time control platform for complex research and development (R&D) based products design. The inherent complexity in R&D projects makes products development a difficult task to undertake. The use of state of the art development tools for modeling, simulation, and hardware-in-the-loop (HIL) validation contributes to a complexity reduction. However, R&D projects still require significant development time since many design iterations are usually necessary before final solution, which increases the cost. In most R&D processes, these tools are not used beyond rapid prototyping since development for mass production is usually performed in another environment, using different tools. This paper presents a fast and cost effective way of R&D-based products development, speeding-up time to market.

  18. Universal real-time control framework and Internet of Things for fast-paced research and development based production environments

    KAUST Repository

    Chaoui, Hicham; Aljarboua, Abdullah Abdulaziz; Miah, Suruz

    2017-01-01

    This paper introduces a universal real-time control platform for complex research and development (R&D) based products design. The inherent complexity in R&D projects makes products development a difficult task to undertake. The use of state of the art development tools for modeling, simulation, and hardware-in-the-loop (HIL) validation contributes to a complexity reduction. However, R&D projects still require significant development time since many design iterations are usually necessary before final solution, which increases the cost. In most R&D processes, these tools are not used beyond rapid prototyping since development for mass production is usually performed in another environment, using different tools. This paper presents a fast and cost effective way of R&D-based products development, speeding-up time to market.

  19. Standard precautions and infection control, medical students' knowledge and behavior at a Saudi university: the need for change.

    Science.gov (United States)

    Amin, Tarek Tawfik; Al Noaim, Khalid Ibrahim; Bu Saad, Mohammed Ahmed; Al Malhm, Turki Ahmed; Al Mulhim, Abdullah Abdulaziz; Al Awas, Marwah Abdulaziz

    2013-04-21

    No previous studies have reported the knowledge of Saudi medical students about Standard Precautions (SPs) and infection control. The objectives of this study were to assess medical students' knowledge in clinical years at King Faisal University, Saudi Arabia about SPs' and to explore their attitudes toward the current curricular/training in providing them with effective knowledge and necessary skills with regard to SPs. This cross sectional study targeted students in clinical stage at College of Medicine, King Faisal University, Saudi Arabia. A pre-tested anonymous self administered data collection form was used. Inquires about students' characteristics, general concepts of infection control/SPs, hand hygiene, personal protective equipment, sharp injuries and disposal, and care of health providers were included. The main source of information for each domain was also inquired. The second part dedicated to explore the attitudes toward the curricular and teaching relevant to SPs. A total of 251 students were included. Knowledge scores in all domains were considerably low, 67 (26.7%) students scored ? 24 (out of 41points) which was considered as an acceptable level of knowledge, 22.2% in 4th year, 20.5% in 5th year and 36.8% in 6th year. Sharp injuries, personal protective equipment and health care of the providers showed the least knowledge scores. The main sources of knowledge were self learning, and informal bed side practices The majority of students' believed that the current teaching and training are insufficient in providing them with the necessary knowledge and skills regarding SPs. The overall knowledge scores for SPs were low especially in the domains of hand hygiene, sharp management, and personal protective equipment reflecting insufficient and ineffective instructions received by medical students through the current curriculum posing them vulnerable to health facilities related infections. Proper curricular reform and training are required to protect

  20. Successful control of resistance in Pseudomonas aeruginosa using antibiotic stewardship and infection control programs at a Chinese university hospital: a 6-year prospective study

    Directory of Open Access Journals (Sweden)

    Liu L

    2018-05-01

    Full Text Available Lei Liu,1 Bin Liu,1 Yu Li,2 Wei Zhang1 1Department of Respiratory Medicine, The First Affiliated Hospital of Harbin Medical University, 2Department of Respiratory Medicine, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, People’s Republic of China Objective: Pseudomonas aeruginosa is emerging as a highly multidrug-resistant (MDR nosocomial pathogen. Data on the efficacy of infection control measures in endemic situations are lacking. We investigated the effect of antimicrobial stewardship (AMS and infection control programs (ICPs in controlling the resistance of P. aeruginosa at a tertiary hospital center.Methods: Susceptibility and resistance were investigated using broth microdilution, as per the guidelines of the Clinical and Laboratory Standards Institute. Antibiotic use was restricted through AMS, which included a classification management system for antibiotic use. The ICPs included environmental cleaning and disinfection, hand hygiene, active surveillance of P. aeruginosa, and education about infection control.Results: A total of 2,241 P. aeruginosa isolates were evaluated between 2012 and 2017. Sensitivity and resistance of the isolates to the antipseudomonal antimicrobials colistin and tigecycline were stable. The sensitivity and resistance to other antipseudomonal antimicrobials improved after 2014, after the AMS and ICPs were implemented in 2013. The use of alcohol-based hand gel significantly increased from 0.6 to 10.9 L per 1,000 patient-days (PD during the study period (P=0.005. The incidence rates of extensively drug-resistant (XDR and MDR P. aeruginosa showed a sustained decrease from 2013 (4.9 and 22% to 2017 (1 and 15%, respectively. The yearly consumption of antimicrobial agents also showed a sustained and significant decrease from 45 defined daily doses (DDDs per 1,000 PD to 38.15 DDDs per 1,000 PD (P=0.04. A significant correlation was found between the incidence rate of MDR P. aeruginosa and the

  1. Personal Continuity of Care in a University-Based Primary Care Practice: Impact on Blood Pressure Control.

    Directory of Open Access Journals (Sweden)

    Nik Sherina Hanafi

    Full Text Available Continuity of care is an important quality outcome of patient care. This study aimed to investigate the relationship between personal continuity and blood pressure (BP control among the patients with hypertension in an academic primary care centre. Between January and May 2012, we conducted a retrospective review of medical records of patients with hypertension who had been followed up for at least 1 year in the Primary Care Clinic, University of Malaya Medical Centre, Malaysia. In this setting, doctors who provided care for hypertension included postgraduate family medicine trainees, non-trainee doctors and academic staff. Systematic random sampling (1:4 was used for patient selection. BP control was defined as less than 130/80 mm Hg for patients with diabetes mellitus, proteinuria and chronic kidney disease and less than 140/90 mm Hg for all other patients. Continuity of care was assessed using the usual provider continuity index (UPCI, which is the ratio of patient visits to the usual provider to the total number of visits to all providers in 1 year. A UPC index of zero denotes no continuity while an index of one reflects perfect continuity with only the usual provider. We reviewed a total of 1060 medical records. The patients' mean age was 62.0 years (SD 10.4. The majority was women (59.2% and married (85.7%. The mean number of visits in a year was 3.85 (SD 1.36. A total of 72 doctors had provided consultations (55 postgraduate family medicine trainees, 8 non-trainee doctors and 9 academic staff. The mean UPCI was 0.43 (SD 0.34. Target BP was achieved in 42% of the patients. There was no significant relationship between BP control and personal continuity after adjustment for total number of visits. Continuity of care was not associated with BP control in our centre. Further studies are needed to explore the reasons for this.

  2. Home-made refurbishment of the instrumentation and control system of the TRIGA reactor of the University of Pavia

    International Nuclear Information System (INIS)

    Borio di Tigliole, A.; Cagnazzo, M.; Magrotti, G.; Manera, S.; Salvini, A.; Musitelli, G.; Nardo, R.

    2008-01-01

    The Instrumentation and Control (I and C) System of the TRIGA reactor of the University of Pavia was dated and, in order to grant a safe and continuous reactor operation for the future, it became necessary to substitute or to upgrade the system. Since the substitution of the I and C system with a new-made one was very difficult to be performed due to long authorization procedures, an home-made refurbishment was planned. Using commercial components of high quality, almost a complete substitution, channel-by-channel, of the I and C system was realized without changing the operating and safety logics. The system includes: - the Reactor Linear Power Channel and Chart Recorder; - the Reactor Percent Power Safety Channel; - the High Voltage and Low Voltage Power Supply; - the Automatic Reactor Power Control; - the Fuel Elements and Cooling-Water Temperatures Measuring Channels; - the Water Conductivity Measuring Channel. The refurbished I and C system shows a very good operational behavior and reliability and will assure a continuous operation of the reactor for the future

  3. Effect of a universal anxiety prevention programme (FRIENDS) on children's academic performance: results from a randomised controlled trial.

    Science.gov (United States)

    Skryabina, Elena; Taylor, Gordon; Stallard, Paul

    2016-11-01

    Evaluations of school-based anxiety prevention programmes have reported improvements in psychological functioning although little is known about their effect upon educational outcomes. One thousand three hundred and sixty-two children from 40 primary schools in England took part in the randomised controlled trial, Preventing Anxiety in Children through Education in Schools. The trial investigated the effectiveness of a universal school-based cognitive behaviour therapy prevention programme, FRIENDS, delivered by health care staff or school staff compared with usual personal, social, health and education (PSHE) lessons. Self-report psychological outcomes and educational attainment on national standardised attainment tests in reading, writing and maths were collected 12 months postintervention. Analysis was performed at individual level using multivariable mixed effect models controlling for gender, type of intervention and school effect. Registered trial: ISRCTN: 23563048. At 12 months, anxiety reduced in the health-led FRIENDS group compared to school-led FRIENDS and PSHE. There were no between-group differences in academic performance regardless of gender, deprivation, ethnicity and additional educational needs. School-based mental health interventions should assess psychological and educational outcomes. Further research should directly compare the effects of interventions led by health and school staff. © 2016 The Authors. Journal of Child Psychology and Psychiatry published by John Wiley & Sons Ltd on behalf of Association for Child and Adolescent Mental Health.

  4. Valleytronics in merging Dirac cones: All-electric-controlled valley filter, valve, and universal reversible logic gate

    Science.gov (United States)

    Ang, Yee Sin; Yang, Shengyuan A.; Zhang, C.; Ma, Zhongshui; Ang, L. K.

    2017-12-01

    Despite much anticipation of valleytronics as a candidate to replace the aging complementary metal-oxide-semiconductor (CMOS) based information processing, its progress is severely hindered by the lack of practical ways to manipulate valley polarization all electrically in an electrostatic setting. Here, we propose a class of all-electric-controlled valley filter, valve, and logic gate based on the valley-contrasting transport in a merging Dirac cones system. The central mechanism of these devices lies on the pseudospin-assisted quantum tunneling which effectively quenches the transport of one valley when its pseudospin configuration mismatches that of a gate-controlled scattering region. The valley polarization can be abruptly switched into different states and remains stable over semi-infinite gate-voltage windows. Colossal tunneling valley-pseudomagnetoresistance ratio of over 10 000 % can be achieved in a valley-valve setup. We further propose a valleytronic-based logic gate capable of covering all 16 types of two-input Boolean logics. Remarkably, the valley degree of freedom can be harnessed to resurrect logical reversibility in two-input universal Boolean gate. The (2 +1 ) polarization states (two distinct valleys plus a null polarization) reestablish one-to-one input-to-output mapping, a crucial requirement for logical reversibility, and significantly reduce the complexity of reversible circuits. Our results suggest that the synergy of valleytronics and digital logics may provide new paradigms for valleytronic-based information processing and reversible computing.

  5. Overestimation of own body weights in female university students: associations with lifestyles, weight control behaviors and depression.

    Science.gov (United States)

    Kim, Miso; Lee, Hongmie

    2010-12-01

    The study aimed to analyze the lifestyles, weight control behavior, dietary habits, and depression of female university students. The subjects were 532 students from 8 universities located in 4 provinces in Korea. According to percent ideal body weight, 33 (6.4%), 181 (34.0%), 283 (53.2%), 22 (4.1%) and 13 (2.5%) were severely underweight, underweight, normal, overweight and obese, respectively, based on self-reported height and weight. As much as 64.1% and only 2.4%, respectively, overestimated and underestimated their body weight status. Six overweight subjects were excluded from overestimation group for the purpose of this study, resulting in overestimation group consisting of only underweight and normal weight subjects. Compared to those from the normal perception group, significantly more subjects from the overestimation group were currently smoking (P = 0.017) and drank more often than once a week (P = 0.015), without any significant differences in dietary habits. Despite similar BMIs, subjects who overestimated their own weight statuses had significantly higher weight dissatisfaction (P = 0.000), obesity stress (P = 0.000), obsession to lose weight (P = 0.007) and depression (P = 0.018). Also, more of them wanted to lose weight (P = 0.000), checked their body weights more often than once a week (P = 0.025) and had dieting experiences using 'reducing meal size' (P = 0.012), 'reducing snacks' (P = 0.042) and 'taking prescribed pills' (P = 0.032), and presented 'for a wider range of clothes selection' as the reason for weight loss (P = 0.039), although none was actually overweight or obese. Unlike the case with overestimating one's own weight, being overweight was associated with less drinking (P = 0.035) and exercising more often (P = 0.001) and for longer (P = 0.001) and healthier reasons for weight control (P = 0.002), despite no differences in frequency of weighing and depression. The results showed that weight overestimation, independent of weight status

  6. Synergy-Based Bilateral Port: A Universal Control Module for Tele-Manipulation Frameworks Using Asymmetric Master–Slave Systems

    Science.gov (United States)

    Brygo, Anais; Sarakoglou, Ioannis; Grioli, Giorgio; Tsagarakis, Nikos

    2017-01-01

    Endowing tele-manipulation frameworks with the capability to accommodate a variety of robotic hands is key to achieving high performances through permitting to flexibly interchange the end-effector according to the task considered. This requires the development of control policies that not only cope with asymmetric master–slave systems but also whose high-level components are designed in a unified space in abstraction from the devices specifics. To address this dual challenge, a novel synergy port is developed that resolves the kinematic, sensing, and actuation asymmetries of the considered system through generating motion and force feedback references in the hardware-independent hand postural synergy space. It builds upon the concept of the Cartesian-based synergy matrix, which is introduced as a tool mapping the fingertips Cartesian space to the directions oriented along the grasp principal components. To assess the effectiveness of the proposed approach, the synergy port has been integrated into the control system of a highly asymmetric tele-manipulation framework, in which the 3-finger hand exoskeleton HEXOTRAC is used as a master device to control the SoftHand, a robotic hand whose transmission system relies on a single motor to drive all joints along a soft synergistic path. The platform is further enriched with the vision-based motion capture system Optitrack to monitor the 6D trajectory of the user’s wrist, which is used to control the robotic arm on which the SoftHand is mounted. Experiments have been conducted with the humanoid robot COMAN and the KUKA LWR robotic manipulator. Results indicate that this bilateral interface is highly intuitive and allows users with no prior experience to reach, grasp, and transport a variety of objects exhibiting very different shapes and impedances. In addition, the hardware and control solutions proved capable of accommodating users with different hand kinematics. Finally, the proposed control framework offers a

  7. Universal interface on Zynq"® SoC with CAN, RS-232, Ethernet and AXI GPIO for instrumentation & control

    International Nuclear Information System (INIS)

    Kumar, Abhijeet; Rajpal, Rachana; Pujara, Harshad; Mandaliya, Hitesh; Edappala, Praveenalal

    2016-01-01

    Highlights: • We have designed Universal Interface on Zynq"® SoC with CAN, RS-232, Ethernet and AXI GPIO for Instrumentation & Control. This project is based on Zynq"®-7000 family xc7z020clg484-1 chip. • We explored the full design flow starting from the hardware development in Vivado to software development in SDK using APIs in C language and then interfacing the host application developed in LabVIEW. • We also explored how to make custom IP with AXI bus interface in Vivado. • Useful for those who wants to make custom hardware on Zynq"® SoC. - Abstract: This paper describes an application developed on the latest Zynq"®-7000 All Programmable SoC (AP SoC) [1] devices which integrate the software programmability of an ARM"®-based processor with the hardware programmability of an FPGA, on a single device. In this paper we have implemented application which uses various interfaces like CAN, RS-232, Ethernet and AXI GPIO, so that our host application running on PC in LabVIEW can communicates with any hardware which has at least any one of the available interface. Zynq-7000 All Programmable SoCs (System On Chip) infuse customizable intelligence into today’s embedded systems to suit your unique application requirements. This family of FPGA is meant for high end application because it has huge resources on single chip. It offers you to make your own custom hardware IP, in fact we have made our custom IP called myIP in our design. The beauty of this chip is that it can write drivers for your custom IP which has AXI bus layer attached. After exporting the hardware information to the Software Development Kit (SDK), the tool is able to write drivers for your custom IP. This simplifies your development to a great extent. In a way this application provides the universal interfacing option to user. User can also write the digital data on the GPIO (General Purpose Input Output) through LabVIEW Test application GUI. This project can be used for remote control and

  8. Screening and Brief Interventions for Hazardous and Harmful Alcohol Use among University Students in South Africa: Results from a Randomized Controlled Trial

    Directory of Open Access Journals (Sweden)

    Hendry van der Heever

    2013-05-01

    Full Text Available The aim of this study was to assess the effectiveness of Screening and Brief Intervention (SBI for alcohol problems among university students in South Africa. The study design for this efficacy study is a randomized controlled trial with 6- and 12-month follow-ups to examine the effects of a brief alcohol intervention to reduce alcohol use by hazardous and harmful drinkers in a university setting. The unit of randomization is the individual university student identified as a hazardous or harmful drinker attending public recruitment venues in a university campus. University students were screened for alcohol problems, and those identified as hazardous or harmful drinkers were randomized into an experimental or control group. The experimental group received one brief counseling session on alcohol risk reduction, while the control group received a health education leaflet. Results indicate that of the 722 screened for alcohol and who agreed to participate in the trial 152 (21.1% tested positive for the Alcohol Use Disorder Identification Test (AUDIT (score 8 or more. Among the 147 (96.7% university students who also attended the 12-month follow-up session, the intervention effect on the AUDIT score was −1.5, which was statistically significant (P = 0.009. Further, the depression scores marginally significantly decreased over time across treatment groups, while other substance use (tobacco and cannabis use, self-rated health status and Posttraumatic Stress Disorder (PTSD scores did not change over time across treatment groups. The study provides evidence of effective brief intervention by assistant nurses with hazardous and harmful drinkers in a university setting in South Africa. The short duration of the brief intervention makes it a realistic candidate for use in a university setting.

  9. Cluster-Based Analysis on State Industrialisation Development:Strenghts, Challenges and the Strategic Action Agenda for the State Government of Perak

    OpenAIRE

    Mohd Nurzid, Mohd Nur Azlan

    2003-01-01

    This study presents the findings on the current status and performance of the Perak State Industrialisation drive. Industrial Cluster Analysis by way of applying the Porter’s Diamond Model to determine the suitability of a particular industry to the nation or region’s competitive advantage has been gaining popularity since its introduction in the 1990’s. The Second Malaysia Industrial Masterplan 1996-2005 (IMP2) has embraced this Cluster-Based Industrial Development framework by promoting the...

  10. Erosion control technology: a user's guide to the use of the Universal Soil Loss Equation at waste burial facilities

    International Nuclear Information System (INIS)

    Nyhan, J.W.; Lane, L.J.

    1986-05-01

    The Universal Soil Loss Equation (USLE) enables the operators of shallow land burial sites to predict the average rate of soil erosion for each feasible alternative combination of plant cover and land management practices in association with a specified soil type, rainfall pattern, and topography. The equation groups the numerous parameters that influence erosion rate under six major factors, whose site-specific values can be expressed numerically. Over a half century of erosion research in the agricultural community has supplied information from which approximate USLE factor values can be obtained for shallow land burial sites throughout the United States. Tables and charts presented in this report make this information readily available for field use. Extensions and limitations of the USLE to shallow land burial systems in the West are discussed, followed by a detailed description of the erosion plot research performed by the nuclear waste management community at Los Alamos, New Mexico. Example applications of the USLE at shallow land burial sites are described, and recommendations for applications of these erosion control technologies are discussed

  11. Three-year randomized controlled clinical study of a one step universal adhesive and a two-step self-etch adhesive in Class II resin composite restorations

    DEFF Research Database (Denmark)

    van Dijken, Jan WV; Pallesen, Ulla

    2017-01-01

    Purpose: To evaluate in a randomized clinical evaluation the 3-year clinical durability of a one-step universal adhesive bonding system and compare it intraindividually with a 2-step self-etch adhesive in Class II restorations. Materials and Methods: Each of 57 participants (mean age 58.3 yr......) received at least two, as similar as possible, extended Class II restorations. The cavities in each of the 60 individual pairs of cavities were randomly distributed to the 1-step universal adhesive (All Bond Universal: AU) and the control 2-step self-etch adhesive (Optibond XTR: OX). A low shrinkage resin......) success rates (p>0.05). Annual failure rates were 1.8% and 2.6%, respectively.The main reason for failure was resin composite fracture. Conclusion: Class II resin composite restorations placed with a one-step universal adhesive showed good short time effectiveness....

  12. Single cyanide-bridged Mo(W)/S/Cu cluster-based coordination polymers: Reactant- and stoichiometry-dependent syntheses, effective photocatalytic properties

    Energy Technology Data Exchange (ETDEWEB)

    Zhang, Jinfang, E-mail: zjf260@jiangnan.edu.cn [China-Australia Joint Research Center for Functional Molecular Materials, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122 (China); Wang, Chao [China-Australia Joint Research Center for Functional Molecular Materials, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122 (China); Wang, Yinlin; Chen, Weitao [China-Australia Joint Research Center for Functional Molecular Materials, Scientific Research Academy, Jiangsu University, Zhenjiang 212013 (China); Cifuentes, Marie P.; Humphrey, Mark G. [Research School of Chemistry, Australian National University, Canberra ACT 0200 (Australia); Zhang, Chi, E-mail: chizhang@jiangnan.edu.cn [China-Australia Joint Research Center for Functional Molecular Materials, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122 (China)

    2015-11-15

    The systematic study on the reaction variables affecting single cyanide-bridged Mo(W)/S/Cu cluster-based coordination polymers (CPs) is firstly demonstrated. Five anionic single cyanide-bridged Mo(W)/S/Cu cluster-based CPs {[Pr_4N][WS_4Cu_3(CN)_2]}{sub n} (1), {[Pr_4N][WS_4Cu_4(CN)_3]}{sub n} (2), {[Pr_4N][WOS_3Cu_3(CN)_2]}{sub n} (3), {[Bu_4N][WOS_3Cu_3(CN)_2]}{sub n} (4) and {[Bu_4N][MoOS_3Cu_3(CN)_2]}{sub n} (5) were prepared by varying the molar ratios of the starting materials, and the specific cations, cluster building blocks and central metal atoms in the cluster building blocks. 1 possesses an anionic 3D diamondoid framework constructed from 4-connected T-shaped clusters [WS{sub 4}Cu{sub 3}]{sup +} and single CN{sup −} bridges. 2 is fabricated from 6-connected planar ‘open’ clusters [WS{sub 4}Cu{sub 4}]{sup 2+} and single CN{sup −} bridges, forming an anionic 3D architecture with an “ACS” topology. 3 and 4 exhibit novel anionic 2-D double-layer networks, both constructed from nest-shaped clusters [WOS{sub 3}Cu{sub 3}]{sup +} linked by single CN{sup −} bridges, but containing the different cations [Pr{sub 4}N]{sup +} and [Bu{sub 4}N]{sup +}, respectively. 5 is constructed from nest-shaped clusters [MoOS{sub 3}Cu{sub 3}]{sup +} and single CN{sup −} bridges, with an anionic 3D diamondoid framework. The anionic frameworks of 1-5, all sustained by single CN{sup −} bridges, are non-interpenetrating and exhibit huge potential void volumes. Employing differing molar ratios of the reactants and varying the cluster building blocks resulted in differing single cyanide-bridged Mo(W)/S/Cu cluster-based CPs, while replacing the cation ([Pr{sub 4}N]{sup +} vs. [Bu{sub 4}N]{sup +}) was found to have negligible impact on the nature of the architecture. Unexpectedly, replacement of the central metal atom (W vs. Mo) in the cluster building blocks had a pronounced effect on the framework. Furthermore, the photocatalytic activities of heterothiometallic

  13. Implementation of the Ohio College Library Center's Proposed Serials Control Subsystem at the University of South Florida Library: Some Preliminary Considerations.

    Science.gov (United States)

    Twitchell, Anne; Sprehn, Mary

    An evaluation of the Ohio College Library Center's (OCLC) proposed Serials Control Subsystem was undertaken to determine what effect the system would have on the operation of the Serials Department at the University of South Florida (USF) Library. The system would consist of three components: 1) claiming--identifying missing issues and generating…

  14. A universal harm-minimisation approach to preventing psychostimulant and cannabis use in adolescents: a cluster randomised controlled trial.

    Science.gov (United States)

    Vogl, Laura Elise; Newton, Nicola Clare; Champion, Katrina Elizabeth; Teesson, Maree

    2014-06-18

    Psychostimulants and cannabis are two of the three most commonly used illicit drugs by young Australians. As such, it is important to deliver prevention for these substances to prevent their misuse and to reduce associated harms. The present study aims to evaluate the feasibility and effectiveness of the universal computer-based Climate Schools: Psychostimulant and Cannabis Module. A cluster randomised controlled trial was conducted with 1734 Year 10 students (mean age = 15.44 years; SD = 0.41) from 21 secondary schools in Australia. Schools were randomised to receive either the six lesson computer-based Climate Schools program or their usual health classes, including drug education, over the year. The Climate Schools program was shown to increase knowledge of cannabis and psychostimulants and decrease pro-drug attitudes. In the short-term the program was effective in subduing the uptake and plateauing the frequency of ecstasy use, however there were no changes in meth/amphetamine use. In addition, females who received the program used cannabis significantly less frequently than students who received drug education as usual. Finally, the Climate Schools program was related to decreasing students' intentions to use meth/amphetamine and ecstasy in the future, however these effects did not last over time. These findings provide support for the use of a harm-minimisation approach and computer technology as an innovative platform for the delivery of prevention education for illicit drugs in schools. The current study indicated that teachers and students enjoyed the program and that it is feasible to extend the successful Climate Schools model to the prevention of other drugs, namely cannabis and psychostimulants. Australian and New Zealand Clinical Trials Registry ACTRN12613000492752.

  15. A Self-Directed Mobile Intervention (WaznApp) to Promote Weight Control Among Employees at a Lebanese University: Protocol for a Feasibility Pilot Randomized Controlled Trial.

    Science.gov (United States)

    Bardus, Marco; Hamadeh, Ghassan; Hayek, Bouchra; Al Kherfan, Rawan

    2018-05-16

    Overweight and obesity have become major health problems globally with more than 1.9 billion overweight adults. In Lebanon, the prevalence of obesity and overweight is 65.4% combined. Risk factors of obesity and overweight are preventable and can be addressed by modifications in the environment and in an individual's lifestyle. Mobile technologies are increasingly used in behavioral, self-directed weight management interventions, providing users with additional opportunities to attain weight control (weight loss, weight gain prevention, etc). Mobile apps may allow for the delivery of Just-in-Time Adaptive Interventions (JITAIs), which provide support through skill building, emotional support, and instrumental support, following the participants' progress. A few commercially available apps offer JITAI features, but no studies have tested their efficacy. The primary objective of this study is to examine the feasibility of a self-directed weight loss intervention, targeting employees of an academic institution, using a virtual coaching app with JITAI features (Lark) and a self-help calorie-counting app (MyFitnessPal). The secondary objective is to estimate the effects of the intervention on main study outcomes. This study is a single-center, parallel, randomized controlled trial with 2 study arms (intervention and control). Participants will be randomly allocated in equal proportions to the intervention (Lark) and control groups (MyFitnessPal). To be eligible for this study, participants must be employed full- or part-time at the university or its medical center, able to read English, have a smartphone, and be interested in controlling their weight. Recruitment strategies entail email invitations, printed posters, and social media postings. We will assess quantitative rates of recruitment, adherence, and retention, self-reported app quality using the user version of the Mobile App Rating Scale. We will also assess changes in weight-related outcomes (absolute weight

  16. Effectiveness of peer-led education on knowledge, attitude and risk behavior practices related to HIV among students at a Malaysian public university--a randomized controlled trial.

    Science.gov (United States)

    Ibrahim, Normala; Rampal, Lekhraj; Jamil, Zubaidah; Zain, Azhar Mohd

    2012-11-01

    Develop, implement and evaluate the effectiveness of a peer-led education program related to HIV/AIDS among university students. randomized controlled trial with 276 university students at Faculty of Medicine and Health Sciences University Putra Malaysia (UPM), Serdang in 2011. A peer-led education program on HIV prevention by university students. differences in knowledge, attitude and risk behavior practices related to HIV between baselines, immediate follow-up after intervention and after three months. Significant improvement in sound knowledge in the intervention group as compared to the control group (Odds ratio, 1.75; 95% CI 1.01, 3.00; p=0.04) and improvement in good attitude related to HIV (Odds ratio 2.22; 95% CI 1.37, 3.61; p=0.01). The odds of high substance risk behavior was significantly reduced in the intervention group as compared to the control group (Odds ratio 0.07; 95% CI 0.02, 0.34; p=0.01). The association between good knowledge and intervention was modified by the different time points (baseline, immediately after intervention and 3 months after intervention), ethnicity and gender. Peer-led education program in HIV prevention improves knowledge, attitude and substance risk behavior. Changes in sexual risk behavior may require a longer follow-up. Copyright © 2012 Elsevier Inc. All rights reserved.

  17. Predictive Current Control of a 7-level AC-DC back-to-back Converter for Universal and Flexible Power Management System

    DEFF Research Database (Denmark)

    Bifaretti, Steffano; Zanchetta, Pericle; Iov, Florin

    2008-01-01

    The paper proposes a novel power conversion system for Universal and Flexible Power Management (UNIFLEX-PM) in Future Electricity Network. Its structure is based on a back-to-back three-phase AC-DC 7-level converter; each AC side is connected to a different PCC, representing the main grid and....../or various distributed generation systems. Effective and accurate power flow control is demonstrated through simulation in Matlab- Simulink environment on a model based on a two-port structure and using a Predictive Control technique. Control of different Power flow profiles has been successfully tested...

  18. Investigating the usefulness of a cluster-based trend analysis to detect visual field progression in patients with open-angle glaucoma.

    Science.gov (United States)

    Aoki, Shuichiro; Murata, Hiroshi; Fujino, Yuri; Matsuura, Masato; Miki, Atsuya; Tanito, Masaki; Mizoue, Shiro; Mori, Kazuhiko; Suzuki, Katsuyoshi; Yamashita, Takehiro; Kashiwagi, Kenji; Hirasawa, Kazunori; Shoji, Nobuyuki; Asaoka, Ryo

    2017-12-01

    To investigate the usefulness of the Octopus (Haag-Streit) EyeSuite's cluster trend analysis in glaucoma. Ten visual fields (VFs) with the Humphrey Field Analyzer (Carl Zeiss Meditec), spanning 7.7 years on average were obtained from 728 eyes of 475 primary open angle glaucoma patients. Mean total deviation (mTD) trend analysis and EyeSuite's cluster trend analysis were performed on various series of VFs (from 1st to 10th: VF1-10 to 6th to 10th: VF6-10). The results of the cluster-based trend analysis, based on different lengths of VF series, were compared against mTD trend analysis. Cluster-based trend analysis and mTD trend analysis results were significantly associated in all clusters and with all lengths of VF series. Between 21.2% and 45.9% (depending on VF series length and location) of clusters were deemed to progress when the mTD trend analysis suggested no progression. On the other hand, 4.8% of eyes were observed to progress using the mTD trend analysis when cluster trend analysis suggested no progression in any two (or more) clusters. Whole field trend analysis can miss local VF progression. Cluster trend analysis appears as robust as mTD trend analysis and useful to assess both sectorial and whole field progression. Cluster-based trend analyses, in particular the definition of two or more progressing cluster, may help clinicians to detect glaucomatous progression in a timelier manner than using a whole field trend analysis, without significantly compromising specificity. © Article author(s) (or their employer(s) unless otherwise stated in the text of the article) 2017. All rights reserved. No commercial use is permitted unless otherwise expressly granted.

  19. Developing Support Systems for Supporting Entrepreneurs and Small Business in Agrotechnology in Kluang, Johor : A Proposal Using the Cluster Based Approach

    OpenAIRE

    Chieng, Ngee Yew Clifford

    2013-01-01

    The aim of this report is to conduct a study on a proposal to develop support systems for entrepreneurs and small businesses in agrotechnology (“Proposal”). The study of the Proposal will include the use of a cluster-based approach to evaluate and guide the planned development of three pieces of land (“Proposed Land”) with a total combined area of approximately 60 acres in the district of Kluang, Johor, Malaysia. This report will begin with an overview and an analysis of the agriculture secto...

  20. Control, Trust, and Rethinking Traditional Roles: Critical Elements in Creating a Mutually Beneficial University-School Partnership.

    Science.gov (United States)

    Lewison, Mitzi; Holliday, Sue

    1997-01-01

    Describes a partnership between a university graduate student and the principal and teachers of a traditional elementary school who collaborated to engage in study group sessions, keep professional journals, and read and discuss research articles on writing instruction. The paper addresses issues of building trust, equalizing power, and…

  1. Universal health coverage and intersectoral action for health: key messages from Disease Control Priorities, 3rd edition

    Science.gov (United States)

    Jamison, Dean T; Adeyi, Olusoji; Anand, Shuchi; Atun, Rifat; Bertozzi, Stefano; Bhutta, Zulfiqar; Binagwaho, Agnes; Black, Robert; Blecher, Mark; Bloom, Barry R; Brouwer, Elizabeth; Bundy, Donald A P; Chisholm, Dan; Cieza, Alarcos; Cullen, Mark; Danforth, Kristen; de Silva, Nilanthi; Debas, Haile T; Donkor, Peter; Dua, Tarun; Fleming, Kenneth A; Gallivan, Mark; Garcia, Patricia J; Gawande, Atul; Gaziano, Thomas; Gelband, Hellen; Glass, Roger; Glassman, Amanda; Gray, Glenda; Habte, Demissie; Holmes, King K; Horton, Susan; Hutton, Guy; Jha, Prabhat; Knaul, Felicia M; Kobusingye, Olive; Krakauer, Eric L; Kruk, Margaret E; Lachmann, Peter; Laxminarayan, Ramanan; Levin, Carol; Looi, Lai Meng; Madhav, Nita; Mahmoud, Adel; Mbanya, Jean Claude; Measham, Anthony; Medina-Mora, María Elena; Medlin, Carol; Mills, Anne; Mills, Jody-Anne; Montoya, Jaime; Norheim, Ole; Olson, Zachary; Omokhodion, Folashade; Oppenheim, Ben; Ord, Toby; Patel, Vikram; Patton, George C; Peabody, John; Prabhakaran, Dorairaj; Qi, Jinyuan; Reynolds, Teri; Ruacan, Sevket; Sankaranarayanan, Rengaswamy; Sepúlveda, Jaime; Skolnik, Richard; Smith, Kirk R; Temmerman, Marleen; Tollman, Stephen; Verguet, Stéphane; Walker, Damian G; Walker, Neff; Wu, Yangfeng; Zhao, Kun

    2018-01-01

    The World Bank is publishing nine volumes of Disease Control Priorities, 3rd edition (DCP3) between 2015 and 2018. Volume 9, Improving Health and Reducing Poverty, summarises the main messages from all the volumes and contains cross-cutting analyses. This Review draws on all nine volumes to convey conclusions. The analysis in DCP3 is built around 21 essential packages that were developed in the nine volumes. Each essential package addresses the concerns of a major professional community (eg, child health or surgery) and contains a mix of intersectoral policies and health-sector interventions. 71 intersectoral prevention policies were identified in total, 29 of which are priorities for early introduction. Interventions within the health sector were grouped onto five platforms (population based, community level, health centre, first-level hospital, and referral hospital). DCP3 defines a model concept of essential universal health coverage (EUHC) with 218 interventions that provides a starting point for country-specific analysis of priorities. Assuming steady-state implementation by 2030, EUHC in lower-middle-income countries would reduce premature deaths by an estimated 4·2 million per year. Estimated total costs prove substantial: about 9·1% of (current) gross national income (GNI) in low-income countries and 5·2% of GNI in lower-middle-income countries. Financing provision of continuing intervention against chronic conditions accounts for about half of estimated incremental costs. For lower-middle-income countries, the mortality reduction from implementing the EUHC can only reach about half the mortality reduction in non-communicable diseases called for by the Sustainable Development Goals. Full achievement will require increased investment or sustained intersectoral action, and actions by finance ministries to tax smoking and polluting emissions and to reduce or eliminate (often large) subsidies on fossil fuels appear of central importance. DCP3 is intended to

  2. Universal health coverage and intersectoral action for health: key messages from Disease Control Priorities, 3rd edition.

    Science.gov (United States)

    Jamison, Dean T; Alwan, Ala; Mock, Charles N; Nugent, Rachel; Watkins, David; Adeyi, Olusoji; Anand, Shuchi; Atun, Rifat; Bertozzi, Stefano; Bhutta, Zulfiqar; Binagwaho, Agnes; Black, Robert; Blecher, Mark; Bloom, Barry R; Brouwer, Elizabeth; Bundy, Donald A P; Chisholm, Dan; Cieza, Alarcos; Cullen, Mark; Danforth, Kristen; de Silva, Nilanthi; Debas, Haile T; Donkor, Peter; Dua, Tarun; Fleming, Kenneth A; Gallivan, Mark; Garcia, Patricia J; Gawande, Atul; Gaziano, Thomas; Gelband, Hellen; Glass, Roger; Glassman, Amanda; Gray, Glenda; Habte, Demissie; Holmes, King K; Horton, Susan; Hutton, Guy; Jha, Prabhat; Knaul, Felicia M; Kobusingye, Olive; Krakauer, Eric L; Kruk, Margaret E; Lachmann, Peter; Laxminarayan, Ramanan; Levin, Carol; Looi, Lai Meng; Madhav, Nita; Mahmoud, Adel; Mbanya, Jean Claude; Measham, Anthony; Medina-Mora, María Elena; Medlin, Carol; Mills, Anne; Mills, Jody-Anne; Montoya, Jaime; Norheim, Ole; Olson, Zachary; Omokhodion, Folashade; Oppenheim, Ben; Ord, Toby; Patel, Vikram; Patton, George C; Peabody, John; Prabhakaran, Dorairaj; Qi, Jinyuan; Reynolds, Teri; Ruacan, Sevket; Sankaranarayanan, Rengaswamy; Sepúlveda, Jaime; Skolnik, Richard; Smith, Kirk R; Temmerman, Marleen; Tollman, Stephen; Verguet, Stéphane; Walker, Damian G; Walker, Neff; Wu, Yangfeng; Zhao, Kun

    2018-03-17

    The World Bank is publishing nine volumes of Disease Control Priorities, 3rd edition (DCP3) between 2015 and 2018. Volume 9, Improving Health and Reducing Poverty, summarises the main messages from all the volumes and contains cross-cutting analyses. This Review draws on all nine volumes to convey conclusions. The analysis in DCP3 is built around 21 essential packages that were developed in the nine volumes. Each essential package addresses the concerns of a major professional community (eg, child health or surgery) and contains a mix of intersectoral policies and health-sector interventions. 71 intersectoral prevention policies were identified in total, 29 of which are priorities for early introduction. Interventions within the health sector were grouped onto five platforms (population based, community level, health centre, first-level hospital, and referral hospital). DCP3 defines a model concept of essential universal health coverage (EUHC) with 218 interventions that provides a starting point for country-specific analysis of priorities. Assuming steady-state implementation by 2030, EUHC in lower-middle-income countries would reduce premature deaths by an estimated 4·2 million per year. Estimated total costs prove substantial: about 9·1% of (current) gross national income (GNI) in low-income countries and 5·2% of GNI in lower-middle-income countries. Financing provision of continuing intervention against chronic conditions accounts for about half of estimated incremental costs. For lower-middle-income countries, the mortality reduction from implementing the EUHC can only reach about half the mortality reduction in non-communicable diseases called for by the Sustainable Development Goals. Full achievement will require increased investment or sustained intersectoral action, and actions by finance ministries to tax smoking and polluting emissions and to reduce or eliminate (often large) subsidies on fossil fuels appear of central importance. DCP3 is intended to

  3. Association between Health Locus of Control and Health Promotion Behaviors among Employees’ Bushehr University of Medical Sciences in 2013-14

    Directory of Open Access Journals (Sweden)

    Roqayeh Chenary

    2016-11-01

    Full Text Available Background: Work is an important source for establishing livelihoods and social occasions; however, it can also damage on person's health. The aim of the present study was to study of association between health locus of control and health promoting behaviors among employees of Bushehr University of Medical Sciences. Materials and Methods: This cross-sectional study was conducted on 208 employees of Bushehr University of Medical Sciences by using convenience sampling method. Data were collected by using standard questionnaires of health-promoting lifestyle and multidimensional health locus of control. Data analysis done by SPSS software version 20. Descriptive indicators and linear regression test was used. Results: Among regression models which related to health promoting behavior and its six dimensions, only there was a significant association between total behavior, physical activity and interpersonal relationship dimensions. Between demographic factors and health locus of control only internal health locus of control explained the health promoting behavior and it explained health promoting behavior changes  within 3.2% (R2=3.2%. None of the three health locus of control explained physical activity dimensions, while internal health locus of control explained interpersonal relation dimension positively and chance locus of control explained interpersonal relation dimension negatively and explained interpersonal relation changes within 4.9% (R2=4.9%. Conclusion: Due to the effect of internal health locus of control on health promotion behavior and interpersonal relationships, we should try to internalize locus of control by performing counseling programs to step toward improving employee health by improving behaviors related to health.

  4. Core Web Sites of Universities of Islamic world Countries Capitals

    Directory of Open Access Journals (Sweden)

    Farshid Danesh

    2012-07-01

    Full Text Available In order to serve the Islamic researchers, providing a web site is inevitable for Islamic Universities which are in transition from the real to the virtual world and. Today, almost all the major universities in Islamic community have websites. But, in the realization of their mission, it is not clear to what extant these universities were successful in terms of information dissemination. The aim of this paper was to determine the core web sites and evaluate the effectiveness, ranking and collaboration rate among these websites. The formulas of core website determination, co-links and in-links analysis and revised web impact factor were used beside cluster and multidimensional analysis methods in this study. Results showed that "King Saud University" website in Saudi Arabia had the highest visibility and the most authoritative website among all university websites. Also, co-link analysis showed that major Islamic university websites had collaboration in 12 clusters based on clustering analysis and in 11 clusters based on multidimensional analysis, where two of them (Iran and Turkey were national clusters in cluster analysis method. Results analysis indicated that web designers in these universities must identify how to attract links and web traffic in order to promote the quality and content of websites. However, the ultimate success of a website was dependent upon factors such as quality, size, language, and the approximate age of a website which was not limited to one or two factors.

  5. Self-Control and Academic Performance: Two Field Studies on University Citizenship Behavior and Counterproductive Academic Behavior

    Science.gov (United States)

    Zettler, Ingo

    2011-01-01

    Self-control affects, among other things, individuals' performance and criminal or deviant behavior. Herein, the construct of self-control is linked to rather specific criteria in an academic context, as derived from findings in the area of organizational psychology. Specifically, it is assumed that students' self-control impacts university…

  6. 77 FR 9969 - Johnson Controls D/B/A Hoover Universal, Inc. Including On-Site Leased Workers from Kelly...

    Science.gov (United States)

    2012-02-21

    ... Johnson Controls, including on-site leased workers from Kelly Services, Sycamore, Illinois. The notice was... amended notice applicable to TA-W-73,074 is hereby issued as follows: ''All workers of Johnston Controls... DEPARTMENT OF LABOR Employment and Training Administration [TA-W-73,074] Johnson Controls D/B/A...

  7. Internet-based guided self-help for university students with anxiety, depression and stress: a randomized controlled clinical trial.

    Science.gov (United States)

    Day, Victor; McGrath, Patrick J; Wojtowicz, Magdalena

    2013-07-01

    Anxiety, depression and stress, often co-occurring, are the psychological problems for which university students most often seek help. Moreover there are many distressed students who cannot, or choose not to, access professional help. The present study evaluated the efficacy of an internet-based guided self-help program for moderate anxiety, depression and stress. The program was based on standard cognitive behavior therapy principles and included 5 core modules, some of which involved options for focusing on anxiety and/or depression and/or stress. Trained student coaches provided encouragement and advice about using the program via e-mail or brief weekly phone calls. Sixty-six distressed university students were randomly assigned to either Immediate Access or a 6-week Delayed Access condition. Sixty-one percent of Immediate Access participants completed all 5 core modules, and 80% of all participants completed the second assessment. On the Depression, Anxiety and Stress Scales-21, Immediate Access participants reported significantly greater reductions in depression (ηp(2)=. 07), anxiety (ηp(2)=. 08) and stress (ηp(2)=. 12) in comparison to participants waiting to do the program, and these improvements were maintained at a six month follow-up. The results suggest that the provision of individually-adaptable, internet-based, self-help programs can reduce psychological distress in university students. Copyright © 2013 Elsevier Ltd. All rights reserved.

  8. Advanced power converters for universal and flexible power management in future electricity network -  Report on Control Strategies

    DEFF Research Database (Denmark)

    Ciobotaru, Mihai; Iov, Florin; Zanchetta, Pericle

    The present document summarizes the work that has been done in Work Package 5 (WP5) where the focus is on modelling and control of the Uniflex-PM system. The models used in the WP5 are described in detail. Since the grid synchronization and monitoring techniques play an important role...... in the control of the Uniflex-PM system, a special attention is paid to this topic. The events in the electrical networks are treated in detail in terms of definitions and classifications from standards, origins, and surveys in different countries. A summary of the grid synchronization and monitoring methods...... is also given with a special focus on Phase Locked Loop systems. The response of the single and three phase PLLs is analyzed under different grid events. Four control strategies are studied in the WP5, namely: synchronous reference frame control, predictive control stationary reference frame control...

  9. Self-Esteem, Locus of Control, and First-Time NCLEX-RN Passage of BSN Students at Historically Black Colleges and Universities.

    Science.gov (United States)

    Chavis, Pamella Ivey

    Relationships between self-esteem, locus of control (LOC), and first-time passage of National Council Licensure Examination for Registered Nurses (NCLEX-RN®) were examined at baccalaureate nursing programs at two historically black colleges and universities. Shortages continue to exceed demands for RNs prepared at the baccalaureate level. Inconsistent pass rates on the NCLEX-RN for graduates of historically black colleges and universities impede the supply of RNs. Surveys and archival data were used to examine characteristics of the sample and explore relationships among variables. All participants (N = 90) reported high self-esteem and internal LOC. Models suggested that all those with high self-esteem and internal LOC would pass the NCLEX-RN; only 85 percent passed the first time. Statistical analysis revealed a lack of statistical significance between self-esteem, LOC, and first-time passage. Variables not included in the study may have affected first-time passage.

  10. Protocol for the Mindful Student Study: a randomised controlled trial of the provision of a mindfulness intervention to support university students' well-being and resilience to stress

    Science.gov (United States)

    Dufour, Geraldine; Benton, Alice; Howarth, Emma; Vainre, Maris; Croudace, Timothy J; Stochl, Jan; Jones, Peter B

    2016-01-01

    Introduction Levels of stress in UK university students are high, with an increase in the proportion of students seeking help in recent years. Academic pressure is reported as a major trigger. Mindfulness training has been shown to reduce stress and is popular among students, but its effectiveness in this context needs to be ascertained. In this pragmatic randomised controlled trial, we hypothesise that the provision of a preventative mindfulness intervention in universities could reduce students' psychological distress during the examination period (primary outcome), improve their resilience to stress up to at least 1 year later, reduce their use of mental health support services and improve academic performance. Methods and analysis At least 550 University of Cambridge students free from active crises or severe mental illness will be randomised to joining an 8-week mindfulness course or to mental health provision as usual (one-to-one allocation rate). Psychological distress will be measured using the Clinical Outcomes in Routine Evaluation Outcome Measure at baseline, postintervention, examination term and 1-year follow-up. Other outcomes are use of mental health services, inability to sit examinations or special circumstance requests, examination grades, well-being, altruism and coping measured with ecological momentary assessment. Outcome assessment and intention-to-treat primary analysis using linear mixed models adjusted for baseline scores will be blind to intervention allocation. We will also conduct per-protocol, subgroup and secondary outcome analyses. An Independent Data Monitoring and Ethics Committee will be set up. We will systematically monitor for, and react to, possible adverse events. An advisory reference group will comprise student representatives, members of the University Counselling Service and other student welfare staff. Ethics and dissemination Approval has been obtained from Cambridge Psychology Research Ethics Committee (PRE.2015

  11. Alcohol assessment & feedback by e-mail for university student hazardous and harmful drinkers: study protocol for the AMADEUS-2 randomised controlled trial.

    Science.gov (United States)

    McCambridge, Jim; Bendtsen, Marcus; Karlsson, Nadine; White, Ian R; Bendtsen, Preben

    2013-10-10

    Alcohol is responsible for a large and growing proportion of the global burden of disease, as well as being the cause of social problems. Brief interventions are one component of comprehensive policy measures necessary to reduce these harms. Brief interventions increasingly take advantage of the Internet to reach large numbers of high risk groups such as students. The research literature on the efficacy and effectiveness of online interventions is developing rapidly. Although many studies show benefits in the form of reduced consumption, other intervention studies show no effects, for reasons that are unclear. Sweden became the first country in the world to implement a national system in which all university students are offered a brief online intervention via an e-mail. This randomized controlled trial (RCT) aims to evaluate the effectiveness of this national system comprising a brief online intervention among university students who are hazardous and harmful drinkers. This study employs a conventional RCT design in which screening to determine eligibility precedes random allocation to immediate or delayed access to online intervention. The online intervention evaluated comprises three main components; assessment, normative feedback and advice on reducing drinking. Screening is confined to a single question in order to minimise assessment reactivity and to prevent contamination. Outcomes will be evaluated after 2 months, with total weekly alcohol consumption being the primary outcome measure. Invitations to participate are provided by e-mail to approximately 55,000 students in 9 Swedish universities. This RCT evaluates routine service provision in Swedish universities via a delay in offer of intervention to the control group. It evaluates effects in the key population for whom this intervention has been designed. Study findings will inform the further development of the national service provision. ISRCTN02335307.

  12. Proposals for the Future Development of the Russian Automated Federal Information System for Nuclear Material Control and Accounting: The Universal Reporting Concept

    International Nuclear Information System (INIS)

    Martyanov, Alexander; Pitel, Victor; Kasumova, Leila; Babcock, Rose A.; Heinberg, Cynthia L.

    2004-01-01

    Development of the automated Russian Federation Federal Information System for Nuclear Material Control and Accounting (FIS) started in 1996. From the beginning, the creation of the FIS was based on the concept of obtaining data from the material balance areas of the organizations, which would enable the system to collect detailed information on nuclear material. In December 2000, the organization-level summarized reporting method was mandated by the Russian Federation and subsequently implemented for all organizations. Analysis of long-term FIS objectives, reporting by all the MBAs in Russia, showed that the present summarized reporting approach decreed by regulations posed a fair number of problems. We need alternative methods that allow the FIS to obtain more detailed information on nuclear material but which accurately reflect the technical and economic resources available to Russian organizations. One possible solution is the universal reporting method. In August 2003, the proposals of the FIS working group to transition to the universal reporting method were approved at the fourth meeting of the Joint Coordinating Committee for Implementation of the Russian Federation and U.S. Government-to-Government Agreement on Cooperation in the Area of Nuclear Material Physical Protection, Control and Accounting (JCC). One of the important elements of universal reporting is that organizations handling nuclear material will establish 'reporting areas' in cooperation with MinAtom of Russia. A reporting area may consist of one MBA, several MBAs, or even an entire organization. This paper will discuss the universal reporting concept and its major objectives and methods for the FIS.

  13. Performance of the Operating Room Personnel in following of the standards of Infection Control in the Educational Hospitals of Yasuj University of Medical Sciences in 2009

    Directory of Open Access Journals (Sweden)

    A Rostaminejad

    2011-04-01

    Full Text Available Introduction & Objective: Surgical wound infection is one of the common nosocomial infections. During operation, members of the surgical team which are in contact with the tissue incision should observe the standards of infection control in the operating room since it has a great role in prevention and control of these infections. The present study aimed to determine the performance of the operating room personnel in observing the standards of infection control in educational hospitals of Yasuj University of Medical Sciences in 2009. Materials & Methods: Forty two operating room personnel participated in this cross-sectional analytic-descriptive study. A check list was used for unnoticeably collecting the data about the performance of personnel in respect of infection control standards at three different times. Their performances were classified into four levels (very weak, weak, moderate and good and the results were shown as absolute and relative frequency distribution. Data were analyzed using Chi-square and Fischer exact test by the SPSS software. Results: Performance of personnel in following the standards of infection control in this study was moderate. Conclusion: The results indicate that the participants of the study do not follow some of the standards of infection control in the operating rooms. Therefore, further activities of the committees of infection control and using of new antiseptic for surgical scrub are recommended.

  14. Power Flow Control through a Multi-Level H-Bridge-based Power Converter for Universal and Flexible Power Management in Future Electrical Grids

    DEFF Research Database (Denmark)

    Iov, Florin; Bifaretti, Steffano; Zanchetta, Pericle

    2008-01-01

    The paper proposes a novel power conversion system for Universal and Flexible Power Management (UNIFLEX-PM) in Future Electricity Network. The structure is based on three AC-DC converters each one connected to a different grid, (representing the main grid and/or various distributed generation...... systems) on the AC side, and linked together at DC side by suitable DC isolation modules. Each port of the UNIFLEX-PM system employs a conversion structure based on a three-phase 7-level AC-DC cascaded converter. Effective and accurate power flow control is demonstrated through simulation in Matlab...... and Simulink environment on a simplified model based on a two-port structure and using a Stationery Reference Frame based control solution. Control of different Power flow profiles has been successfully tested in numerous network conditions such as voltage unbalance, frequency excursions and harmonic...

  15. A mindfulness-based intervention to increase resilience to stress in university students (the Mindful Student Study): a pragmatic randomised controlled trial.

    Science.gov (United States)

    Galante, Julieta; Dufour, Géraldine; Vainre, Maris; Wagner, Adam P; Stochl, Jan; Benton, Alice; Lathia, Neal; Howarth, Emma; Jones, Peter B

    2018-02-01

    The rising number of young people going to university has led to concerns about an increasing demand for student mental health services. We aimed to assess whether provision of mindfulness courses to university students would improve their resilience to stress. We did this pragmatic randomised controlled trial at the University of Cambridge, UK. Students aged 18 years or older with no severe mental illness or crisis (self-assessed) were randomly assigned (1:1), via remote survey software using computer-generated random numbers, to receive either an 8 week mindfulness course adapted for university students (Mindfulness Skills for Students [MSS]) plus mental health support as usual, or mental health support as usual alone. Participants and the study management team were aware of group allocation, but allocation was concealed from the researchers, outcome assessors, and study statistician. The primary outcome was self-reported psychological distress during the examination period, as measured with the Clinical Outcomes in Routine Evaluation Outcome Measure (CORE-OM), with higher scores indicating more distress. The primary analysis was by intention to treat. This trial is registered with the Australia and New Zealand Clinical Trials Registry, number ACTRN12615001160527. Between Sept 28, 2015, and Jan 15, 2016, we randomly assigned 616 students to the MSS group (n=309) or the support as usual group (n=307). 453 (74%) participants completed the CORE-OM during the examination period and 182 (59%) MSS participants completed at least half of the course. MSS reduced distress scores during the examination period compared with support as usual, with mean CORE-OM scores of 0·87 (SD 0·50) in 237 MSS participants versus 1·11 (0·57) in 216 support as usual participants (adjusted mean difference -0·14, 95% CI -0·22 to -0·06; p=0·001), showing a moderate effect size (β -0·44, 95% CI -0·60 to -0·29; pmindfulness training could be an effective component of a wider student

  16. Predictability and interpretability of hybrid link-level crash frequency models for urban arterials compared to cluster-based and general negative binomial regression models.

    Science.gov (United States)

    Najaf, Pooya; Duddu, Venkata R; Pulugurtha, Srinivas S

    2018-03-01

    Machine learning (ML) techniques have higher prediction accuracy compared to conventional statistical methods for crash frequency modelling. However, their black-box nature limits the interpretability. The objective of this research is to combine both ML and statistical methods to develop hybrid link-level crash frequency models with high predictability and interpretability. For this purpose, M5' model trees method (M5') is introduced and applied to classify the crash data and then calibrate a model for each homogenous class. The data for 1134 and 345 randomly selected links on urban arterials in the city of Charlotte, North Carolina was used to develop and validate models, respectively. The outputs from the hybrid approach are compared with the outputs from cluster-based negative binomial regression (NBR) and general NBR models. Findings indicate that M5' has high predictability and is very reliable to interpret the role of different attributes on crash frequency compared to other developed models.

  17. Nutrition and Culinary in the Kitchen Program: a randomized controlled intervention to promote cooking skills and healthy eating in university students - study protocol.

    Science.gov (United States)

    Bernardo, Greyce Luci; Jomori, Manuela Mika; Fernandes, Ana Carolina; Colussi, Claudia Flemming; Condrasky, Margaret D; Proença, Rossana Pacheco da Costa

    2017-12-20

    Community-based intervention studies that aim at developing cooking skills have increased in the scientific literature and are related to healthier food practices. However, methodological limitations are observed and only a few studies have university students as the target. The university entrance period has been related to negative changes in eating habits among young people and it represents an important period for developing interventions for health promotion. This study describes the study protocol and the evaluation framework for the Nutrition and Culinary in the Kitchen program. This program aims to develop cooking skills in university students, and is based on the Cooking with a Chef program in the United States. This ongoing, randomized controlled intervention was designed with a six month follow-up study. The intervention consisted of three-hour weekly classes during a six week period with printed materials provided. Five of the classes were hands-on cooking and one was a tour to a popular food market. There were eight primary outcome measures: changes in relation to i) accessibility and availability of fruits and vegetables; ii) cooking attitudes; iii) cooking behaviors at home; iv) cooking behaviors away from home; v) produce consumption self-efficacy; vi) self-efficacy for using basic cooking techniques; vii) self-efficacy for using fruits, vegetables, and seasonings (while cooking); and viii) knowledge of cooking terms and techniques. Secondary outcomes included changes in body mass index and in personal characteristics related to cooking. Repeated measures were collected through the application of an online self-completed survey, at baseline, after intervention and six months after intervention. A sample of 80 university students (40: intervention group; 40: control group) was estimated to detect a mean change of 1.5 points in cooking knowledge, with study power of 80%, and 95% level of confidence, plus 20% for random losses and 10% for confounding

  18. The Family Startup Program: study protocol for a randomized controlled trial of a universal group-based parenting support program.

    Science.gov (United States)

    Trillingsgaard, Tea; Maimburg, Rikke Damkjær; Simonsen, Marianne

    2015-04-21

    Inadequate parenting is an important public health problem with possible severe and long-term consequences related to child development. We have solid theoretical and political arguments in favor of efforts enhancing the quality of the early family environment in the population at large. However, little is known about effect of universal approaches to parenting support during the transition to parenthood. This protocol describes an experimental evaluation of group based parenting support, the Family Startup Program (FSP), currently implemented large scale in Denmark. Participants will be approximately 2500 pregnant women and partners. Inclusion criteria are parental age above 18 and the mother expecting first child. Families are recruited when attending routine pregnancy scans provided as a part of the publicly available prenatal care program at Aarhus University Hospital, Skejby. Families are randomized within four geographically defined strata to one of two conditions a) participation in FSP or b) Treatment As Usual (TAU). FSP aims to prepare new families for their roles as parents and enhance parental access to informal sources of support, i.e. social network and community resources. The program consists of twelve group sessions, with nine families in each group, continuing from pregnancy until the child is 15 months old. TAU is the publicly available pre- and postnatal care available to families in both conditions. Analyses will employ survey data, administrative data from health visitors, and administrative register based data from Statistics Denmark. All data sources will be linked via the unique Danish Civil Registration Register (CPR) identifier. Data will be obtained at four time points, during pregnancy, when the child is nine months, 18 months and seven years. The primary study outcome is measured by the Parenting Sense of Competence scale (PSOC) J Clin Child Psychol 18:167-75, 1989. Other outcomes include parenting and couple relationship quality

  19. Personality traits in established schizophrenia: aspects of usability and differences between patients and controls using the Swedish universities Scales of Personality.

    Science.gov (United States)

    Fagerberg, Tomas; Söderman, Erik; Gustavsson, J Petter; Agartz, Ingrid; Jönsson, Erik G

    2016-08-01

    Personality is considered as an important aspect that can affect symptoms and social function in persons with schizophrenia. The personality questionnaire Swedish universities Scales of Personality (SSP) has not previously been used in psychotic disorder. To investigate if SSP has a similar internal consistency and factor structure in a psychosis population as among healthy controls and if patients with psychotic disorders differ from non-psychotic individuals in their responses to the SSP. Patients with psychotic disorders (n = 107) and healthy controls (n = 119) completed SSP. SSP scores were analyzed for internal consistency and case-control differences by Cronbach's alfa and multiple analysis of covariance, respectively. Internal consistencies among patients were overall similar to that of controls. The patients scored significantly higher in seven (Somatic trait anxiety, Psychic trait anxiety, Stress susceptibility, Lack of assertiveness, Detachment, Embitterment, Mistrust) and lower in three (Physical trait aggression, Verbal trait aggression, Adventure seeking) of the 13 scales of the inventory. In three scales (Impulsiveness, Social desirability and Trait irritability) there was no significant difference between the scoring of patients and healthy controls. The reliability estimates suggest that SSP can be used by patients with psychotic disorders in stable remission. Patients score higher on neuroticism-related scales and lower on aggression-related scales than controls, which is in accordance with earlier studies where other personality inventories were used.

  20. Comparative evaluation of image quality of various digital radiology systems and quality control and optimization of radiation protection at the Amiens university hospital

    International Nuclear Information System (INIS)

    Foro, Saturnin Didace L.

    2004-01-01

    This study was centered on two axes: the first is the comparative evaluation of image quality of various numerical radiology system, the second is the quality control and the optimization of protection against radiation. The publication of directive 97/43 Euratom from council of June 30, 1997 and consequently, the decree of February 12, 2004 founded a strict lawful framework that is engaged to respect the University Hospital of Amiens by the installation of a operational dosimetry system and the application of February 12, 2004 decree. (author) [fr

  1. Educational intervention together with an on-line quality control program achieve recommended analytical goals for bedside blood glucose monitoring in a 1200-bed university hospital.

    Science.gov (United States)

    Sánchez-Margalet, Víctor; Rodriguez-Oliva, Manuel; Sánchez-Pozo, Cristina; Fernández-Gallardo, María Francisca; Goberna, Raimundo

    2005-01-01

    Portable meters for blood glucose concentrations are used at the patients bedside, as well as by patients for self-monitoring of blood glucose. Even though most devices have important technological advances that decrease operator error, the analytical goals proposed for the performance of glucose meters have been recently changed by the American Diabetes Association (ADA) to reach nurses in a 1200-bed University Hospital to achieve recommended analytical goals, so that we could improve the quality of diabetes care. We used portable glucose meters connected on-line to the laboratory after an educational program for nurses with responsibilities in point-of-care testing. We evaluated the system by assessing total error of the glucometers using high- and low-level glucose control solutions. In a period of 6 months, we collected data from 5642 control samples obtained by 14 devices (Precision PCx) directly from the control program (QC manager). The average total error for the low-level glucose control (2.77 mmol/l) was 6.3% (range 5.5-7.6%), and even lower for the high-level glucose control (16.66 mmol/l), at 4.8% (range 4.1-6.5%). In conclusion, the performance of glucose meters used in our University Hospital with more than 1000 beds not only improved after the intervention, but the meters achieved the analytical goals of the suggested ADA/National Academy of Clinical Biochemistry criteria for total error (<7.9% in the range 2.77-16.66 mmol/l glucose) and optimal total error for high glucose concentrations of <5%, which will improve the quality of care of our patients.

  2. Impact of an infection-control program on nurses' knowledge and attitude in pediatric intensive care units at Cairo University hospitals.

    Science.gov (United States)

    Galal, Yasmine S; Labib, John R; Abouelhamd, Walaa A

    2014-04-01

    Healthcare-associated infection is a prominent problem among patients in pediatric intensive care units (PICU) as it could result in significant morbidity, prolonged hospitalization, and increase in medical care costs. The role of nurses is extremely important in preventing hazards and sequela of healthcare-associated infections. The aim of this study was to assess the effect of a health education program regarding infection-control measures on nurses' knowledge and attitude in PICUs at Cairo University hospitals. This was a pre-post test interventional study in which a convenient sample of 125 nurses was taken from the nursing staff in different PICUs at Cairo University hospitals. The study took place in three phases. In the first phase, the nursing staff's knowledge, attitude and practice concerning infection-control measures were tested using a self-administered pretested questionnaire and an observation checklist. The second phase included health education sessions in the form of powerpoint and video presentations; and in the third phase the nurses' knowledge and attitude on infection-control measures were reassessed. A significantly higher level of knowledge was revealed in the postintervention phase as compared with the preintervention phase with regards to the types of nosocomial infections (94.4 vs. 76.8%, Pcontrol nosocomial infections (89.6 vs. 68%, Pcontrol measures could protect them completely from acquiring infection (79.2 vs. 65.6%, P=0.033). Statistically significant higher total knowledge and attitude scores were revealed in the postintervention phase as compared with the preintervention one (PHospital (88%), whereas it was the lowest in the emergency pediatric unit (65%). There is scope for improvement in knowledge and attitude after educational program was offered to the nursing staff. Educational training programs should be multidisciplinary interventions in the era of quality control to help healthcare workers realize the importance of basic

  3. A randomized controlled trial testing the efficacy of a brief cannabis universal prevention program among adolescents in primary care.

    Science.gov (United States)

    Walton, Maureen A; Resko, Stella; Barry, Kristen L; Chermack, Stephen T; Zucker, Robert A; Zimmerman, Marc A; Booth, Brenda M; Blow, Frederic C

    2014-05-01

    To examine the efficacy of a brief intervention delivered by a therapist (TBI) or a computer (CBI) in preventing cannabis use among adolescents in urban primary care clinics. A randomized controlled trial comparing: CBI and TBI versus control. Urban primary care clinics in the United States. Research staff recruited 714 adolescents (aged 12-18 years) who reported no life-time cannabis use on a screening survey for this study, which included a baseline survey, randomization (stratified by gender and grade) to conditions (control; CBI; TBI) and 3-, 6- and 12-month assessments. Using an intent-to-treat approach, primary outcomes were cannabis use (any, frequency); secondary outcomes included frequency of other drug use, severity of alcohol use and frequency of delinquency (among 85% completing follow-ups). Compared with controls, CBI participants had significantly lower rates of any cannabis use over 12 months (24.16%, 16.82%, respectively, P cannabis use at 3 and 6 months (P cannabis use or frequency, but had significantly less other drug use at 3 months (P prevent and reduce cannabis use. Both computer and therapist delivered brief interventions appeared to have small effects in reducing other risk behaviors, but these dissipated over time. © 2013 Society for the Study of Addiction.

  4. University Internationalization and University Autonomy

    DEFF Research Database (Denmark)

    Turcan, Romeo V.; Gulieva, Valeria

    2016-01-01

    Turcan and Gulieva deepen our theoretical understanding of the process of university internationalisation by exploring the relationship between university internationalisation and university autonomy. They conjecture that the process of university internationalisation and its sustainability are d......, dissimilar, and sometimes conflicting dimensions of the financial, legal, organisational, staffing, and academic autonomy of the host country, are compromising key aspects of their own autonomy and core mission?......Turcan and Gulieva deepen our theoretical understanding of the process of university internationalisation by exploring the relationship between university internationalisation and university autonomy. They conjecture that the process of university internationalisation and its sustainability...... are determined by the structure and exercise of university autonomy settings at home and in the host countries, and that the process itself cannot be successfully achieved and maintained without changes in the autonomy settings. The key question the authors ask is to what degree universities, in embracing new...

  5. Methodology for establishing of a control and assurance program on a Radiology Department of a university hospital

    International Nuclear Information System (INIS)

    Almeida, Carlos Domingues de; Almeida, Carlos Eduardo de

    1995-01-01

    The purpose of this work is to present a proposal of a quality assurance program developed for a typical diagnostic radiology department of a University Hospital. The aim of this program is to reduce the number of films lost due to several kinds of problems, equipment malfunction, incorrect selection of the physical parameters of the X-ray equipment, poor conditions of the film ecrans and chassis, excessive temperature fluctuations on the processor, personnel training and organizational related aspects. The preliminary results shows that the main causes of problems are film overexposure, film under exposure, unexposed films taken back to the dark room, inadequate positioning of the film in the couch, inadequate positioning of the patient and the X-ray processor in addition to others of minor importance. It is very important to emphasize that the data acquisition methodology must contemplate a professional posture of respect for those involved in the procedures and as result of this one would expect their active participation in the program. As result of the first year of study, this program has demonstrated that the annual losses in the department studied are over US$ 125.000,00 and the goal of this program now is to reduce this figure to an acceptable number, US$40.000,00 a reasonable value for a large diagnostic radiology facility. (author). 6 refs., 4 figs

  6. Proceeding of JSPS-CAS Core University Program seminar on production and control of high performance plasmas with advanced plasma heating and diagnostic systems

    International Nuclear Information System (INIS)

    Gao Xiang; Morita, Shigeru

    2011-02-01

    The JSPS-CAS Core University Program (CUP) seminar on 'Production and control of high performance plasmas with advanced plasma heating and diagnostic systems' took place in Guilin Bravo Hotel, Guilin, China, 1-4 November 2010. This seminar was organized in the framework of CUP in the field of plasma and nuclear fusion. Two special talks and 46 oral talks were presented in the seminar including 36 Chinese, 18 Japanese and 4 Korean attendees. Production and control of high performance plasmas is a crucial issue for realizing an advanced nuclear fusion reactor in addition to developments of advanced plasma heating and diagnostics. This seminar was motivated along the issues. Results in the field of fusion experiments obtained through CUP activities during recent two years were summarized. Possible direction of future collaboration and further encouragement of scientific activity of younger scientists were also discussed in this seminar with future experimental plans in both countries. (author)

  7. Proceeding of JSPS-CAS core university program seminar on production and control of high performance plasmas with advanced plasma heating and diagnostic systems

    International Nuclear Information System (INIS)

    Gao Xiang; Morita, Shigeru

    2009-01-01

    The JSPS-CAS Core University Program (CUP) seminar on 'Production and control of high performance plasmas with advanced plasma heating and diagnostic systems' took place in Shiner hotel, Lijiang, China, 4-7 November 2008. This seminar was organized in the framework of CUP in the field of plasma and nuclear fusion. One special talk and 34 oral talks were presented in the seminar including 16 Japanese attendees. Production and control of high performance plasmas is a crucial issue for realizing an advanced nuclear fusion reactor in addition to developments of advanced plasma heating and diagnostics. This seminar was motivated along the issues. Results obtained from CUP activities during recent four years were summarized. Several crucial issues to be resolved near future were also extracted in this seminar. The 31 of the papers are indexed individually. (J.P.N.)

  8. Time perspective, optimistic bias, and self-control among different statuses of university smokers in China: a cross-sectional study.

    Science.gov (United States)

    Xu, Ying; Yang, Yang; Ma, Xiao

    2018-01-09

    Risk behavior often seems 'self-defeating' to the observers. Most people understand the basic health-related knowledge, but some of them still choose to continue risk behaviors, especially for the young. This study aimed to examine time perspective, optimism bias and self control correlated with smoking behavior in Chinese college students. A cross-sectional survey enrolling 3016 university students in Chengdu City, Sichuan Province, China. Influence Factors were identified using multiple logistic regression analyses. Prevalence of current smoking was 20.92% (631 smokers), including 272 daily smokers (9.02%) and 359 non-daily smokers (11.90%). Future-oriented time perspective, general capacity for self-discipline, reliability and ethnicity were protective factors of smoking behavior. Possibility of self-suffering diseases and gender were risk factors of smoking behavior. Smoking in University of Chengdu, China is a severe problem. Results in this research have suggested that irrespective of the smoking level, improving health-related knowledge, time management awareness and self-control ability may contribute to reducing the prevalence of smoking behavior.

  9. Long-term outcome of a randomized controlled universal prevention trial through a positive parenting program: is it worth the effort?

    Science.gov (United States)

    Hahlweg, Kurt; Heinrichs, Nina; Kuschel, Annett; Bertram, Heike; Naumann, Sebastian

    2010-05-16

    Approximately 20% of children experience internalizing or externalizing DSM-IV-TR disorders. This prevalence rate cannot be reduced through treatment only. Effective preventive interventions are therefore urgently needed. The aim of the current investigation is to evaluate the two-year efficacy of the group Triple P parenting program administered universally for the prevention of child behavior problems. Based on their respective preschool, N = 280 families were randomly assigned either to the parent training or to the control group. The efficacy was analyzed using multi-source assessments, including questionnaires by mother and father, behavioral observation of mother-child interaction, and teacher evaluations. At the 2-year follow-up, both parents in the Triple P intervention reported significant reductions in dysfunctional parenting behavior, and mothers also an increase in positive parenting behavior. In addition, mothers reported significant reductions in internalizing and externalizing child behavior. Single-parent mothers in the Triple P intervention did not report significant changes in parenting or child problem behavior which is primarily due to inexplicable high positive effects in single parent mothers of the control group. Neither mother-child interactions nor teacher ratings yielded significant results. The results support the long-term efficacy of the Triple P - group program as a universal prevention intervention for changing parenting behavior in two-parent households, but not necessarily in single-parent mothers.

  10. Long-term outcome of a randomized controlled universal prevention trial through a positive parenting program: is it worth the effort?

    Directory of Open Access Journals (Sweden)

    Bertram Heike

    2010-05-01

    Full Text Available Abstract Background Approximately 20% of children experience internalizing or externalizing DSM-IV-TR disorders. This prevalence rate cannot be reduced through treatment only. Effective preventive interventions are therefore urgently needed. The aim of the current investigation is to evaluate the two-year efficacy of the group Triple P parenting program administered universally for the prevention of child behavior problems. Methods Based on their respective preschool, N = 280 families were randomly assigned either to the parent training or to the control group. The efficacy was analyzed using multi-source assessments, including questionnaires by mother and father, behavioral observation of mother-child interaction, and teacher evaluations. Results At the 2-year follow-up, both parents in the Triple P intervention reported significant reductions in dysfunctional parenting behavior, and mothers also an increase in positive parenting behavior. In addition, mothers reported significant reductions in internalizing and externalizing child behavior. Single-parent mothers in the Triple P intervention did not report significant changes in parenting or child problem behavior which is primarily due to inexplicable high positive effects in single parent mothers of the control group. Neither mother-child interactions nor teacher ratings yielded significant results. Conclusions The results support the long-term efficacy of the Triple P - group program as a universal prevention intervention for changing parenting behavior in two-parent households, but not necessarily in single-parent mothers.

  11. Is the DOTS strategy sufficient to achieve tuberculosis control in low- and middle-income countries? 1. Need for interventions in universities and medical schools.

    Science.gov (United States)

    Caminero, J A

    2003-06-01

    Now that progress is gradually being made in the implementation of the DOTS strategy in low-income countries, we must take into account the fact that nearly 30% of all tuberculosis (TB) cases worldwide occur in middle-income countries, which usually have an adequate health infrastructure and sufficient economic resources for TB control. These countries nevertheless have other limitations that make it necessary to develop other aspects in addition to the DOTS strategy. These can be summarised in three main themes: 1) adequate coordination of all health structures involved in TB management, ensuring that they follow the basic norms of the National Tuberculosis Programme (NTP), 2) direct intervention in universities and medical schools, which are ubiquitous in such countries, and 3) specific collaboration with specialists and physicians in private practice, an important obstacle to the success of NTPs in several countries. A detailed analysis is presented of strategies that need to be implemented in different countries depending on their economic resources and their TB situation. The need to carry out specific interventions in addition to training in DOTS in universities and medical schools in order to improve TB control is discussed. A specific project in this area developed by the IUATLD in Latin America is described.

  12. Universal Robot Hand Equipped with Tactile and Joint Torque Sensors: Development and Experiments on Stiffness Control and Object Recognition

    Directory of Open Access Journals (Sweden)

    Hiroyuki NAKAMOTO

    2007-04-01

    Full Text Available Various humanoid robots have been developed and multifunction robot hands which are able to attach those robots like human hand is needed. But a useful robot hand has not been depeveloped, because there are a lot of problems such as control method of many degrees of freedom and processing method of enormous sensor outputs. Realizing such robot hand, we have developed five-finger robot hand. In this paper, the detailed structure of developed robot hand is described. The robot hand we developed has five fingers of multi-joint that is equipped with joint torque sensors and tactile sensors. We report experimental results of a stiffness control with the developed robot hand. Those results show that it is possible to change the stiffness of joints. Moreover we propose an object recognition method with the tactile sensor. The validity of that method is assured by experimental results.

  13. Proceedings of the Annual Conference on Manual Control (15th) held March 20 - 22, 1979, Wright State University, Dayton, Ohio

    Science.gov (United States)

    1979-11-01

    there is little confusion between the source of the lateral specific force and the observed roll alea . We call this syndrome of effects "the leans...Phatak - Senior Engineer Analytical Mechanics Associates, Inc. Mountain View, CA 94043 ABSTRACT The standard optimal control model (SOCM) for the human...TASKS by Anil V. Phatak, Senior Engineer Analytical Mechanics Associates 2483 Old Middlefield Way Suite 210 Mountain View, California 94043 and

  14. Polarization Control with Plasmonic Antenna Tips: A Universal Approach to Optical Nanocrystallography and Vector-Field Imaging

    Science.gov (United States)

    Park, Kyoung-Duck; Raschke, Markus B.

    2018-05-01

    Controlling the propagation and polarization vectors in linear and nonlinear optical spectroscopy enables to probe the anisotropy of optical responses providing structural symmetry selective contrast in optical imaging. Here we present a novel tilted antenna-tip approach to control the optical vector-field by breaking the axial symmetry of the nano-probe in tip-enhanced near-field microscopy. This gives rise to a localized plasmonic antenna effect with significantly enhanced optical field vectors with control of both \\textit{in-plane} and \\textit{out-of-plane} components. We use the resulting vector-field specificity in the symmetry selective nonlinear optical response of second-harmonic generation (SHG) for a generalized approach to optical nano-crystallography and -imaging. In tip-enhanced SHG imaging of monolayer MoS$_2$ films and single-crystalline ferroelectric YMnO$_3$, we reveal nano-crystallographic details of domain boundaries and domain topology with enhanced sensitivity and nanoscale spatial resolution. The approach is applicable to any anisotropic linear and nonlinear optical response, and provides for optical nano-crystallographic imaging of molecular or quantum materials.

  15. Universal machine ''Shtrek'' and the tractor-lifter with pneumatic-equipment control. [Auxiliary multipurpose materials handling equipment

    Energy Technology Data Exchange (ETDEWEB)

    Bal' bert, B M; Borumenskiy, V A; Lishenko, A P; Mitchenko, G A

    1982-01-01

    The machine ''Shtrek'' is described. It makes it possible to mechanize over 20 auxiliary operations: loading-unloading operations: extraction of old and deformed timbering; dissmantling of obstructions; erection of different types of timbering; making and restoring of drainage channels; laying and straightening of a drift and its leveling; assembly and disassembly of pipelines and mine equipment, etc. Depending on the type of operation, the machine has the corresponding suspended equipment. The elementary variant has a limited area of application at mines of the central region of the Dunbass. Currently a pneumatic variant of the machine ''Shtrek'' has been developed. The electric motor and the starter of the pumping equipment of the machine have been replaced by a pneumatic motor and pneumatically controlled valve KTM-50. In this case there was significant reduction in the weight of the pumping equipment and in its overall dimensions; the electric drive of the hydraulic distributors for controlling the mechanisms were replaced by simpler pneumatic ones; the logical circuit of the control system was constructed on the USEPPA elements. A specialized tractor-lifter designed for moving suspended loads is described for auxiliary operations in the near-face zone of the preparatory drifts. The machine also lifts and lowers the boom, rotates the boom by 270/sup 0/ and additionally lifts and lowers the weight-lifting hook.

  16. 7 March 2013 -Stanford University Professor N. McKeown FREng, Electrical Engineering and Computer Science and B. Leslie, Creative Labs visiting CERN Control Centre and the LHC tunnel with Director for Accelerators and Technology S. Myers.

    CERN Multimedia

    Anna Pantelia

    2013-01-01

    7 March 2013 -Stanford University Professor N. McKeown FREng, Electrical Engineering and Computer Science and B. Leslie, Creative Labs visiting CERN Control Centre and the LHC tunnel with Director for Accelerators and Technology S. Myers.

  17. Attitudes of Cairo University medical students toward smoking: the need for tobacco control programs in medical education.

    Science.gov (United States)

    Khan, Adeel A M; Dey, Subhojit; Taha, Alaa H; Huq, Farhan S; Moussawi, Ahmad H; Omar, Omar S; Soliman, Amr S

    2012-04-01

    Tobacco smoking rates are increasing in developing countries and so are tobacco-related chronic diseases. Reported figures from the WHO show rates of smoking in Egypt as high as 20% but limited information is available about smoking specifically among physicians and medical students. Final-year medical students of Cairo University were surveyed regarding their tobacco behavior and attitudes using a modified Global Health Professions Student Survey. We approached 220 students by randomly selecting clinical units into which they were assigned and requested completion of the survey. Ever users of some form of tobacco comprised 46.7% of students sampled, current users of cigarettes comprised 17.4%, and current users of water pipe 'sheesha' comprised 17.6%. The vast majority (87.7%) of students believed that smoking is a public health problem in Cairo and supported restriction of tobacco. Yet, only 58.5% stated that they were taught it is important for physicians to provide tobacco education materials to patients. Among ever users of cigarettes, 54.4% believed health professionals do not serve as health role models for patients, and only a small percentage of all students (34.2%) stated that they had received some form of training on smoking cessation in their medical curriculum to be able to instruct patients. A high rate of smoking was revealed among medical students in Cairo. Overall, approximately 23.4% of students were currently smoking cigarettes and/or sheesha, and 46.7% were ever users of some form of tobacco. A formal antitobacco program for medical students should be incorporated into their medical curriculum to change the attitudes of medical students and overcome the anticipated increase in chronic diseases in Egypt.

  18. Protocol for the Mindful Student Study: a randomised controlled trial of the provision of a mindfulness intervention to support university students' well-being and resilience to stress.

    Science.gov (United States)

    Galante, Julieta; Dufour, Geraldine; Benton, Alice; Howarth, Emma; Vainre, Maris; Croudace, Timothy J; Wagner, Adam P; Stochl, Jan; Jones, Peter B

    2016-11-09

    Levels of stress in UK university students are high, with an increase in the proportion of students seeking help in recent years. Academic pressure is reported as a major trigger. Mindfulness training has been shown to reduce stress and is popular among students, but its effectiveness in this context needs to be ascertained. In this pragmatic randomised controlled trial, we hypothesise that the provision of a preventative mindfulness intervention in universities could reduce students' psychological distress during the examination period (primary outcome), improve their resilience to stress up to at least 1 year later, reduce their use of mental health support services and improve academic performance. At least 550 University of Cambridge students free from active crises or severe mental illness will be randomised to joining an 8-week mindfulness course or to mental health provision as usual (one-to-one allocation rate). Psychological distress will be measured using the Clinical Outcomes in Routine Evaluation Outcome Measure at baseline, postintervention, examination term and 1-year follow-up. Other outcomes are use of mental health services, inability to sit examinations or special circumstance requests, examination grades, well-being, altruism and coping measured with ecological momentary assessment. Outcome assessment and intention-to-treat primary analysis using linear mixed models adjusted for baseline scores will be blind to intervention allocation. We will also conduct per-protocol, subgroup and secondary outcome analyses. An Independent Data Monitoring and Ethics Committee will be set up. We will systematically monitor for, and react to, possible adverse events. An advisory reference group will comprise student representatives, members of the University Counselling Service and other student welfare staff. Approval has been obtained from Cambridge Psychology Research Ethics Committee (PRE.2015.060). Results will be published in peer-reviewed journals. A lay

  19. Design, construction, and first operational results of a 5 megawatt feedback controlled amplifier system for disruption control on the Columbia University HBT-EP tokamak

    International Nuclear Information System (INIS)

    Reass, W.A.; Alvestad, H.A.; Bartsch, R.R.; Wurden, G.A.; Ivers, T.H.; Nadle, D.L.

    1995-01-01

    This paper presents the electrical design and first operational results of a 5 Megawatt feedback controlled amplifier system designed to drive a 300 uH saddle coil set on the ''HBT-EP'' tokamak. It will be used to develop various plasma feedback techniques to control and inhibit the onset of plasma disruptions that are observed in high ''B'' plasmas. To provide a well characterized system, a high fidelity, high power closed loop amplifier system has been refurbished from the Los Alamos ''ZT-P'' equilibrium feedback system. In it's configuration developed for the Columbia HBT-EP tokamak, any desired waveform may be generated within a I 100 ampere and 16 kV peak to peak dynamic range. An energy storage capacitor bank presently limits the effective full power pulse width to 10 mS. The full power bandwidth driving the saddle coil set is ∼12 kHz, with bandwidth at reduced powers exceeding 30 kHz. The system is designed similar to a grounded cathode, push-pull, transformer coupled, tube type amplifier system. 'Me push pull amplifier consists of 6 each Machlett ML8618 magnetically beamed triodes, 3 on each end of the (center tapped) coupling transformer. The transformer has .I volt-seconds of core and a 1:1 turns ratio. The transformer is specially designed for high power, low leakage inductance, and high bandwidth. Each array of ML8618's is (grid) driven with a fiber optic controlled hotdeck with a 3CXI0,000A7 (triode) output. To linearize the ML8618 grid drive, a minor feedback loop in the hotdeck is utilized. Overall system response is controlled by active feedback of the saddle coil current, derived from a coaxial current viewing resistor. The detailed electrical design of the power amplifier, transformer, and feedback system will be provided in addition to recent HBT-EP operational results

  20. Effects of Music Therapy on the Cardiovascular and Autonomic Nervous System in Stress-Induced University Students: A Randomized Controlled Trial.

    Science.gov (United States)

    Lee, Kyoung Soon; Jeong, Hyeon Cheol; Yim, Jong Eun; Jeon, Mi Yang

    2016-01-01

    Stress is caused when a particular relationship between the individual and the environment emerges. Specifically, stress occurs when an individual's abilities are challenged or when one's well-being is threatened by excessive environmental demands. The aim of this study was to measure the effects of music therapy on stress in university students. Randomized controlled trial. Sixty-four students were randomly assigned to the experimental group (n = 33) or the control group (n = 31). Music therapy. Initial measurement included cardiovascular indicators (blood pressure and pulse), autonomic nervous activity (standard deviation of the normal-to-normal intervals [SDNN], normalized low frequency, normalized high frequency, low/high frequency), and subjective stress. After the first measurement, participants in both groups were exposed to a series of stressful tasks, and then a second measurement was conducted. The experimental group then listened to music for 20 minutes and the control group rested for 20 minutes. A third and final measurement was then taken. There were no significant differences between the two groups in the first or second measurement. However, after music therapy, the experimental group and the control group showed significant differences in all variables, including systolic blood pressure (p = .026), diastolic blood pressure (p = .037), pulse (p music tends to relax the body and may stimulate the parasympathetic nervous system. These results suggest music therapy as an intervention for stress reduction.

  1. Knowledge and performance of dental students with regard to infection control guidelines in Dental School of Mazandaran University of Medical Sciences in 2015

    Directory of Open Access Journals (Sweden)

    Alireza Ebrahimpour

    2016-08-01

    Full Text Available Dentists are at risk of infectious diseases and dental offices can serve as a source of infection transmission if the infection control guidelines are not properly implemented. Adherence to infection control principles can help prevent disease transmission. This study sought to assess the level of knowledge and performance of dental students with regard to infection control principles in dental clinics of School of Dentistry, Mazandaran University of Medical Sciences. This study was conducted on 87 dental students. Data were collected using a 9-question questionnaire and a 16-item checklist. The data were analyzed using SPSS version 21 and descriptive statistics by calculation of mean and standard deviation (SD, t-test, Chi square test, Kruskal Wallis test and the Spearman’s correlation coefficient. Level of significance was set at P=0.05.Of subjects, 100% were wearing sterile gloves and changed them for each patient, collected and disposed wastes after examination or treatment of each patient, capped the needle after anesthetic injection and changed the dental suction tip; 94% were wearing a mask and changed it for each patient; 89% were wearing clean white coats. The level of knowledge of students was found to be moderate. Also, the performance of students with regard to infection control principles was found to be very good probably due to the rules and regulations set by the dental school departments.

  2. Control Grouped Pedagogical Experiment to Test the Performance of Second-generation Web Maps and the Traditional Maps at the University of Debrecen

    Directory of Open Access Journals (Sweden)

    Dániel Balla

    2015-01-01

    Full Text Available Almost every component of the information society is influenced by elements built on communication technology. Learning also tends to be related to the dynamic usage of computers. Nowadays, a number of applications (online or offline are also available that engage large groups of potential users and simultaneously provide a virtual environment to facilitate learning. This study introduces the self-developed interactive blind map teaching-examining e-learning system of the University of Debrecen. Results of testing the system with a control group are also presented.Both experimental and control groups of students were required to sita test of topographic knowledge following a semester of study. The pass mark for the test was 80%. The experimental group used the new digital environment to study, while the control group prepared for their exam using paper maps in the traditional way. The key research questions addressed by the study were to determine whether exam results obtained by the group using the ‘digital’ method better than those of the control's; and if there were a difference between the exam performances of the two groups, was this statistically significant and, therefore, likely to occur in other similar scenarios?

  3. The Relationship of Experiential Avoidance, Familial Emotional Atmosphere and Self-Control with Online Gaming Addiction in Bachelor Student of Shahid Chamran University of Ahvaz

    Directory of Open Access Journals (Sweden)

    Arash Zandipayam

    2016-06-01

    Full Text Available Background and Objectives: online game addiction is considered as a compulsive, excessive, uncontrollable and destructive physical and psychological behavior. With regard to the problem of persons with addiction to online gaming in the fields of experiential avoidance, families emotional atmosphere and self-control, this study was carried out with the aim of determining the relationship of experiential avoidance, families emotional atmosphere and self-control with online gaming addiction in the bachelor student of Shahid Chamran University of Ahvaz. Materials and Methods: The research design was descriptive and correlational, performed on 200 bachelor student of Shahid Chamran University of Ahvaz, Iran. Sampling was conducted using multi-stage random sampling. Information were collected via SPSS 16 and to analyze the data, Pearson’s correlation and regression (inter tests were used. Results: The results showed a significant positive correlation in familial emotional atmosphere and experiential avoidance with addiction to online games and there was a significant negative correlation between self-control and addiction to online games. Regression analysis indicated that familial emotional atmosphere determined 28% of the variance of addiction to online games. Conclusions: The results confirmed the relationship of addiction to online games with familial emotional atmosphere and experiential avoidance, also emphasized on the importance of family environment in intensified use of internet. The results of this study can be used to plan appropriate interventions, including awareness among students and practitioners in the field of symptoms and consequences of addiction to online games, and try to correct the use of internet among users, to prevent and effectively manage this disorder.

  4. The CLIMATE schools combined study: a cluster randomised controlled trial of a universal Internet-based prevention program for youth substance misuse, depression and anxiety.

    Science.gov (United States)

    Teesson, Maree; Newton, Nicola C; Slade, Tim; Chapman, Cath; Allsop, Steve; Hides, Leanne; McBride, Nyanda; Mewton, Louise; Tonks, Zoe; Birrell, Louise; Brownhill, Louise; Andrews, Gavin

    2014-02-05

    Anxiety, depressive and substance use disorders account for three quarters of the disability attributed to mental disorders and frequently co-occur. While programs for the prevention and reduction of symptoms associated with (i) substance use and (ii) mental health disorders exist, research is yet to determine if a combined approach is more effective. This paper describes the study protocol of a cluster randomised controlled trial to evaluate the effectiveness of the CLIMATE Schools Combined intervention, a universal approach to preventing substance use and mental health problems among adolescents. Participants will consist of approximately 8400 students aged 13 to 14-years-old from 84 secondary schools in New South Wales, Western Australia and Queensland, Australia. The schools will be cluster randomised to one of four groups; (i) CLIMATE Schools Combined intervention; (ii) CLIMATE Schools - Substance Use; (iii) CLIMATE Schools - Mental Health, or (iv) Control (Health and Physical Education as usual). The primary outcomes of the trial will be the uptake and harmful use of alcohol and other drugs, mental health symptomatology and anxiety, depression and substance use knowledge. Secondary outcomes include substance use related harms, self-efficacy to resist peer pressure, general disability, and truancy. The link between personality and substance use will also be examined. Compared to students who receive the universal CLIMATE Schools - Substance Use, or CLIMATE Schools - Mental Health or the Control condition (who received usual Health and Physical Education), we expect students who receive the CLIMATE Schools Combined intervention to show greater delays to the initiation of substance use, reductions in substance use and mental health symptoms, and increased substance use and mental health knowledge. This trial is registered with the Australian and New Zealand Clinical Trials registry, ACTRN12613000723785.

  5. The CLIMATE schools combined study: a cluster randomised controlled trial of a universal Internet-based prevention program for youth substance misuse, depression and anxiety

    Science.gov (United States)

    2014-01-01

    Background Anxiety, depressive and substance use disorders account for three quarters of the disability attributed to mental disorders and frequently co-occur. While programs for the prevention and reduction of symptoms associated with (i) substance use and (ii) mental health disorders exist, research is yet to determine if a combined approach is more effective. This paper describes the study protocol of a cluster randomised controlled trial to evaluate the effectiveness of the CLIMATE Schools Combined intervention, a universal approach to preventing substance use and mental health problems among adolescents. Methods/design Participants will consist of approximately 8400 students aged 13 to 14-years-old from 84 secondary schools in New South Wales, Western Australia and Queensland, Australia. The schools will be cluster randomised to one of four groups; (i) CLIMATE Schools Combined intervention; (ii) CLIMATE Schools - Substance Use; (iii) CLIMATE Schools - Mental Health, or (iv) Control (Health and Physical Education as usual). The primary outcomes of the trial will be the uptake and harmful use of alcohol and other drugs, mental health symptomatology and anxiety, depression and substance use knowledge. Secondary outcomes include substance use related harms, self-efficacy to resist peer pressure, general disability, and truancy. The link between personality and substance use will also be examined. Discussion Compared to students who receive the universal CLIMATE Schools - Substance Use, or CLIMATE Schools - Mental Health or the Control condition (who received usual Health and Physical Education), we expect students who receive the CLIMATE Schools Combined intervention to show greater delays to the initiation of substance use, reductions in substance use and mental health symptoms, and increased substance use and mental health knowledge. Trial registration This trial is registered with the Australian and New Zealand Clinical Trials registry, ACTRN12613000723785

  6. Control of Surge in Centrifugal Compressor by Using a Nozzle Injection System: Universality in Optimal Position of Injection Nozzle

    Directory of Open Access Journals (Sweden)

    Toshiyuki Hirano

    2012-01-01

    Full Text Available The passive control method for surge and rotating stall in centrifugal compressors by using a nozzle injection system was proposed to extend the stable operating range to the low flow rate. A part of the flow at the scroll outlet of a compressor was recirculated to an injection nozzle installed on the inner wall of the suction pipe of the compressor through the bypass pipe and injected to the impeller inlet. Two types of compressors were tested at the rotational speeds of 50,000 rpm and 60,000 rpm with the parameter of the circumferential position of the injection nozzle. The present experimental results revealed that the optimum circumferential position, which most effectively reduced the flow rate for the surge inception, existed at the opposite side of the tongue of the scroll against the rotational axis and did not depend on the compressor system and the rotational speeds.

  7. Five-year experience of critical incidents associated with patient-controlled analgesia in an Irish University Hospital.

    LENUS (Irish Health Repository)

    Ahmad, I

    2012-02-01

    BACKGROUND: Patient-controlled analgesia (PCA) is a common and effective means of managing post-operative pain. We sought to identify factors that may lead to critical incidents (CIs) in patient safety when using PCA in our institution. METHODS: An observational study of prospectively collected data of patients who received PCA from 2002 to 2006 was performed. All CIs were documented and analysed by staff members of the acute pain service (APS). Cause analysis of CIs was undertaken to determine if measures can be instituted to prevent recurrence of similar events. RESULTS: Over eight thousand patients (8,240) received PCA. Twenty-seven CIs were identified. Eighteen were due to programming errors. Other CIs included co-administration of opioids and oversedation. CONCLUSION: In our institution, the largest contributory factor to CIs with PCAs was programming error. Strategies to minimize this problem include better education and surveillance.

  8. The CAP study, evaluation of integrated universal and selective prevention strategies for youth alcohol misuse: study protocol of a cluster randomized controlled trial

    Directory of Open Access Journals (Sweden)

    Newton Nicola C

    2012-08-01

    Full Text Available Abstract Background Alcohol misuse amongst young people is a serious concern. The need for effective prevention is clear, yet there appear to be few evidenced-based programs that prevent alcohol misuse and none that target both high and low-risk youth. The CAP study addresses this gap by evaluating the efficacy of an integrated approach to alcohol misuse prevention, which combines the effective universal internet-based Climate Schools program with the effective selective personality-targeted Preventure program. This article describes the development and protocol of the CAP study which aims to prevent alcohol misuse and related harms in Australian adolescents. Methods/Design A cluster randomized controlled trial (RCT is being conducted with Year 8 students aged 13 to 14-years-old from 27 secondary schools in New South Wales and Victoria, Australia. Blocked randomisation was used to assign schools to one of four groups; Climate Schools only, Preventure only, CAP (Climate Schools and Preventure, or Control (alcohol, drug and health education as usual. The primary outcomes of the trial will be the uptake and harmful use of alcohol and alcohol related harms. Secondary outcomes will include alcohol and cannabis related knowledge, cannabis related harms, intentions to use, and mental health symptomatology. All participants will complete assessments on five occasions; baseline; immediately post intervention, and at 12, 24 and 36 months post baseline. Discussion This study protocol presents the design and current implementation of a cluster RCT to evaluate the efficacy of the CAP study; an integrated universal and selective approach to prevent alcohol use and related harms among adolescents. Compared to students who receive the stand-alone universal Climate Schools program or alcohol and drug education as usual (Controls, we expect the students who receive the CAP intervention to have significantly less uptake of alcohol use, a reduction in average

  9. Effects of a stand-alone web-based electronic screening and brief intervention targeting alcohol use in university students of legal drinking age: A randomized controlled trial.

    Science.gov (United States)

    Ganz, Thomas; Braun, Michael; Laging, Marion; Schermelleh-Engel, Karin; Michalak, Johannes; Heidenreich, Thomas

    2018-02-01

    Many intervention efforts targeting student drinking were developed to address US college students, which usually involves underage drinking. It remains unclear, if research evidence from these interventions is generalizable to university and college students of legal drinking age, e.g., in Europe. To evaluate the effectiveness of a translated and adapted version of the eCHECKUP TO GO, applied as stand-alone web-based electronic screening and brief intervention (e-SBI), in German university students at risk for hazardous drinking. A fully automated web-based two-arm parallel-group randomized controlled trial was conducted. Participants were randomized to an e-SBI or assessment-only (AO) condition. The current paper analyzed students with baseline AUDIT-C scores ≥3 for women and ≥4 for men (sample at baseline: e-SBI [n=514], AO [n=467]; 3-month follow-up: e-SBI [n=194], AO [n=231]; 6-month follow-up: e-SBI [n=146], AO [n=200]). The primary outcome was prior four weeks' alcohol consumption. Secondary outcomes were frequency of heavy drinking occasions, peak blood alcohol concentration, and number of alcohol-related problems. Mixed linear model analyses revealed significant interaction effects between groups and time points on the primary outcome after 3 and 6months. Compared to students in the AO condition, students in the e-SBI condition reported consuming 4.11 fewer standard drinks during the previous four weeks after 3months, and 4.78 fewer standard drinks after 6months. Mixed results were found on secondary outcomes. The results indicate that evidence on and knowledge of web-based e-SBIs based on US college student samples is transferable to German university students of legal drinking age. However, knowledge of what motivates students to complete programs under voluntary conditions, although rare, is needed. Copyright © 2017 Elsevier Ltd. All rights reserved.

  10. Clustering based on adherence data.

    Science.gov (United States)

    Kiwuwa-Muyingo, Sylvia; Oja, Hannu; Walker, Sarah A; Ilmonen, Pauliina; Levin, Jonathan; Todd, Jim

    2011-03-08

    Adherence to a medical treatment means the extent to which a patient follows the instructions or recommendations by health professionals. There are direct and indirect ways to measure adherence which have been used for clinical management and research. Typically adherence measures are monitored over a long follow-up or treatment period, and some measurements may be missing due to death or other reasons. A natural question then is how to describe adherence behavior over the whole period in a simple way. In the literature, measurements over a period are usually combined just by using averages like percentages of compliant days or percentages of doses taken. In the paper we adapt an approach where patient adherence measures are seen as a stochastic process. Repeated measures are then analyzed as a Markov chain with finite number of states rather than as independent and identically distributed observations, and the transition probabilities between the states are assumed to fully describe the behavior of a patient. The patients can then be clustered or classified using their estimated transition probabilities. These natural clusters can be used to describe the adherence of the patients, to find predictors for adherence, and to predict the future events. The new approach is illustrated and shown to be useful with a simple analysis of a data set from the DART (Development of AntiRetroviral Therapy in Africa) trial in Uganda and Zimbabwe.

  11. Cluster Based Vector Attribute Filtering

    NARCIS (Netherlands)

    Kiwanuka, Fred N.; Wilkinson, Michael H.F.

    2016-01-01

    Morphological attribute filters operate on images based on properties or attributes of connected components. Until recently, attribute filtering was based on a single global threshold on a scalar property to remove or retain objects. A single threshold struggles in case no single property or

  12. ADVANCED CLUSTER BASED IMAGE SEGMENTATION

    Directory of Open Access Journals (Sweden)

    D. Kesavaraja

    2011-11-01

    Full Text Available This paper presents efficient and portable implementations of a useful image segmentation technique which makes use of the faster and a variant of the conventional connected components algorithm which we call parallel Components. In the Modern world majority of the doctors are need image segmentation as the service for various purposes and also they expect this system is run faster and secure. Usually Image segmentation Algorithms are not working faster. In spite of several ongoing researches in Conventional Segmentation and its Algorithms might not be able to run faster. So we propose a cluster computing environment for parallel image Segmentation to provide faster result. This paper is the real time implementation of Distributed Image Segmentation in Clustering of Nodes. We demonstrate the effectiveness and feasibility of our method on a set of Medical CT Scan Images. Our general framework is a single address space, distributed memory programming model. We use efficient techniques for distributing and coalescing data as well as efficient combinations of task and data parallelism. The image segmentation algorithm makes use of an efficient cluster process which uses a novel approach for parallel merging. Our experimental results are consistent with the theoretical analysis and practical results. It provides the faster execution time for segmentation, when compared with Conventional method. Our test data is different CT scan images from the Medical database. More efficient implementations of Image Segmentation will likely result in even faster execution times.

  13. Cluster-based tangible programming

    CSIR Research Space (South Africa)

    Smith, Andrew C

    2014-05-01

    Full Text Available –1038. [2] J. Wall, “Demo I Microsoft Surface and the Single View Platform,” in Collaborative Technologies and Systems, 2009. CTS ’09. International Symposium on, 2009, pp. xxxi–xxxii. [3] M. Kaltenbrunner, “reacTIVision and TUIO: a tangible tabletop...

  14. Adaptive swarm cluster-based dynamic multi-objective synthetic minority oversampling technique algorithm for tackling binary imbalanced datasets in biomedical data classification.

    Science.gov (United States)

    Li, Jinyan; Fong, Simon; Sung, Yunsick; Cho, Kyungeun; Wong, Raymond; Wong, Kelvin K L

    2016-01-01

    An imbalanced dataset is defined as a training dataset that has imbalanced proportions of data in both interesting and uninteresting classes. Often in biomedical applications, samples from the stimulating class are rare in a population, such as medical anomalies, positive clinical tests, and particular diseases. Although the target samples in the primitive dataset are small in number, the induction of a classification model over such training data leads to poor prediction performance due to insufficient training from the minority class. In this paper, we use a novel class-balancing method named adaptive swarm cluster-based dynamic multi-objective synthetic minority oversampling technique (ASCB_DmSMOTE) to solve this imbalanced dataset problem, which is common in biomedical applications. The proposed method combines under-sampling and over-sampling into a swarm optimisation algorithm. It adaptively selects suitable parameters for the rebalancing algorithm to find the best solution. Compared with the other versions of the SMOTE algorithm, significant improvements, which include higher accuracy and credibility, are observed with ASCB_DmSMOTE. Our proposed method tactfully combines two rebalancing techniques together. It reasonably re-allocates the majority class in the details and dynamically optimises the two parameters of SMOTE to synthesise a reasonable scale of minority class for each clustered sub-imbalanced dataset. The proposed methods ultimately overcome other conventional methods and attains higher credibility with even greater accuracy of the classification model.

  15. Multiobjective optimization of the inspection intervals of a nuclear safety system: A clustering-based framework for reducing the Pareto Front

    International Nuclear Information System (INIS)

    Zio, E.; Bazzo, R.

    2010-01-01

    In this paper, a framework is developed for identifying a limited number of representative solutions of a multiobjective optimization problem concerning the inspection intervals of the components of a safety system of a nuclear power plant. Pareto Front solutions are first clustered into 'families', which are then synthetically represented by a 'head of the family' solution. Three clustering methods are analyzed. Level Diagrams are then used to represent, analyse and interpret the Pareto Fronts reduced to their head-of-the-family solutions. Two decision situations are considered: without or with decision maker preferences, the latter implying the introduction of a scoring system to rank the solutions with respect to the different objectives: a fuzzy preference assignment is then employed to this purpose. The results of the application of the framework of analysis to the problem of optimizing the inspection intervals of a nuclear power plant safety system show that the clustering-based reduction maintains the Pareto Front shape and relevant characteristics, while making it easier for the decision maker to select the final solution.

  16. Determinants of virological failure among patients on highly active antiretroviral therapy in University of Gondar Referral Hospital, Northwest Ethiopia: a case-control study.

    Science.gov (United States)

    Bayu, Belete; Tariku, Amare; Bulti, Abera Balcha; Habitu, Yohannes Ayanaw; Derso, Terefe; Teshome, Destaw Fetene

    2017-01-01

    Viral load monitoring is used as an important biomarker for diagnosing treatment failure in patients with HIV infection/AIDS. Ethiopia has started targeted viral load monitoring. However, factors leading to virological failure are not well understood and studied. Thus, the aim of this study was to identify the determinants of virological failure among HIV-infected patients on highly active antiretroviral therapy at the University of Gondar Referral Hospital, Northwest Ethiopia. A case-control study was conducted from May to June 2015. Cases were subjects who had already experienced virological failure; controls were those without virological failure. Data were extracted from 153 cases and 153 controls through chart review. A multivariate logistic regression analysis was carried out to identify factors associated with virological failure, and variables with a p -value failure was observed among patients aged failure. Therefore, evidence-based intervention should be implemented to improve adherence to ART, which in turn helps to boost immunity (CD4) and suppresses viral replication and load. Moreover, attention should be given to younger patients who have had ART for longer periods.

  17. Cross-infection and infection control in dentistry: Knowledge, attitude and practice of patients attended dental clinics in King Abdulaziz University Hospital, Jeddah, Saudi Arabia

    Directory of Open Access Journals (Sweden)

    Nahla K. Ibrahim

    2017-07-01

    Full Text Available The objective of the study was to determine the level of Knowledge, Attitude and Practice (KAP of patients attended dental clinics at King Abdulaziz University Hospital (KAUH regarding cross infections and infection control in dentistry. A cross-sectional study was conducted among 225 patients who attended the dental clinics of KAUH, Jeddah, Saudi Arabia, 2014. A standardized, confidential, anonymous, interviewing questionnaire was used. Knowledge about dental infections was assessed by 12 MCQs. The attitudes were assessed through answering seven statements on a three- point Likert scale. Patients’ self reported practices were also evaluated. Descriptive and inferential statistics were done.Results of the study revealed that 39.5%, 38.7% and 21.8% of the participants obtained poor, fair and satisfactory level of knowledge about infections and infection control in dentistry, respectively. Social media was the commonest source of information about dental infection. Participant's educational level was significantly associated with the level of knowledge about dental infection. Patients had positive attitudes towards infection control in dentistry. Regarding self-reported practice, only few participants would ask dentists about sterilization of dental instruments (9.3%, wearing face mask (13.3% and gloves (16.4% if they don’t do so. In conclusion, our participants had good attitudes towards infection control in dentistry. However, their knowledge and practice need improvements. Conduction of educational programs is needed through social media, mass media, schools and public places. These programs involve both patients and providers. Keywords: Patient safety, Cross infection, Dental infection, Infection control, Emerging diseases, KAP

  18. Realization of Current Mode Universal Filter and a Dual-Mode Single Resistance Controlled Quadrature Oscillator Employing VDCC and Only Grounded Passive Elements

    Directory of Open Access Journals (Sweden)

    Manish Gupta

    2017-01-01

    Full Text Available The manuscript presents a circuit that can act as a universal filter as well as a single resistence controlled oscillator by unpretentiously changing the switch positions. The circuit employs only two active devices and all grounded passive elements. The utilization of only grounded passive components makes this circuit a better choice for integrated circuit implementation. The current mode biquadratic filter offers all the five basic responses along with independent tunability of its quality factor. The dual-mode quadrature sinusoidal oscillator offers explicit current outputs along with voltage outputs. The circuit also offers a simple and uncoupled condition of oscillation and frequency of oscillation. The typical analysis such as non-ideal, sensitivity and parasitic analysis along with the regular simulation results as well as experimental results are exposed here, to strengthen the design idea.

  19. Operational Performance of the Two-Channel 10 Megawatt Feedback Amplifier System for MHD Control on the Columbia University HBT-EP Tokamak

    International Nuclear Information System (INIS)

    Reass, W.A.; Wurden, G.A.

    1997-01-01

    The operational characteristics and performance of the two channel 10 Megawatt MHD feedback control system as installed by Los Alamos National Laboratory on the Columbia University HBT-EP tokamak are described. In the present configuration, driving independent 300 microH saddle coil sets, each channel can deliver 1100 Amperes and 16 kV peak to peak. Full power bandwidth is about 12 kHz, with capabilities at reduced power to 30 kHz. The present system topology is designed to suppress magnetohydrodynamic activity with m=2, n=1 symmetry. Application of either static (single phase) or rotating (twin phased) magnetic perturbations shows the ability to spin up or slow down the plasma, and also prevent (or cause) so-called ''mode-locking''. Open loop and active feedback experiments using a digital signal processor (DSP) have been performed on the HBT-EP tokamak and initial results show the ability to manipulate the plasma MHD mode frequency

  20. Targeted prevention of common mental health disorders in university students: randomised controlled trial of a transdiagnostic trait-focused web-based intervention.

    Science.gov (United States)

    Musiat, Peter; Conrod, Patricia; Treasure, Janet; Tylee, Andre; Williams, Chris; Schmidt, Ulrike

    2014-01-01

    A large proportion of university students show symptoms of common mental disorders, such as depression, anxiety, substance use disorders and eating disorders. Novel interventions are required that target underlying factors of multiple disorders. To evaluate the efficacy of a transdiagnostic trait-focused web-based intervention aimed at reducing symptoms of common mental disorders in university students. Students were recruited online (n=1047, age: M=21.8, SD=4.2) and categorised into being at high or low risk for mental disorders based on their personality traits. Participants were allocated to a cognitive-behavioural trait-focused (n=519) or a control intervention (n=528) using computerised simple randomisation. Both interventions were fully automated and delivered online (trial registration: ISRCTN14342225). Participants were blinded and outcomes were self-assessed at baseline, at 6 weeks and at 12 weeks after registration. Primary outcomes were current depression and anxiety, assessed on the Patient Health Questionnaire (PHQ9) and Generalised Anxiety Disorder Scale (GAD7). Secondary outcome measures focused on alcohol use, disordered eating, and other outcomes. Students at high risk were successfully identified using personality indicators and reported poorer mental health. A total of 520 students completed the 6-week follow-up and 401 students completed the 12-week follow-up. Attrition was high across intervention groups, but comparable to other web-based interventions. Mixed effects analyses revealed that at 12-week follow up the trait-focused intervention reduced depression scores by 3.58 (pmental disorders with a low-intensity intervention. ControlledTrials.com ISRCTN14342225.

  1. Effects of physical therapy and relaxation techniques on the parameters of pain in university students with tension-type headache: A randomised controlled clinical trial.

    Science.gov (United States)

    Álvarez-Melcón, A C; Valero-Alcaide, R; Atín-Arratibel, M A; Melcón-Álvarez, A; Beneit-Montesinos, J V

    2018-05-01

    Non-pharmacological treatments help control tension-type headache; however, evidence about their effectiveness is still limited. This study evaluates the effectiveness of physical therapy based on cervical spine kinesiotherapy and posture correction exercises compared to a programme of relaxation techniques only (Schultz's Autogenic Training, AT). Tension-type headache is very common among university students. We randomly selected 152 university students with a diagnosis of tension-type headache according to the criteria of the International Headache Society. Eighty-four were women (55.3%) and 68 were men (44.7%). Mean age was 20.42±2.36 years. The study design is a randomised controlled trial of a non-pharmacological intervention with a blinded evaluation of response variables. We compared the results of two independent samples: AT was used in one of the groups while the other group received AT plus cervical spine kinesiotherapy and posture correction training. Patients recorded any changes in the parameters of pain (frequency, intensity, and duration) and drug consumption in a headache diary before treatment, at 4 weeks, and at 3 months. Both interventions achieved a decrease in all the parameters of pain; however, decreases in frequency and intensity were more significant in the combined treatment group (Pcervical spine kinesiotherapy, and especially the combination of both, effectively reduce tension-type headache by preventing and managing the potential psychophysical causes of this disorder. Future research should aim to assess the long-term effects of these interventions. Copyright © 2016 Sociedad Española de Neurología. Publicado por Elsevier España, S.L.U. All rights reserved.

  2. Targeted Prevention of Common Mental Health Disorders in University Students: Randomised Controlled Trial of a Transdiagnostic Trait-Focused Web-Based Intervention

    Science.gov (United States)

    Musiat, Peter; Conrod, Patricia; Treasure, Janet; Tylee, Andre; Williams, Chris; Schmidt, Ulrike

    2014-01-01

    Background A large proportion of university students show symptoms of common mental disorders, such as depression, anxiety, substance use disorders and eating disorders. Novel interventions are required that target underlying factors of multiple disorders. Aims To evaluate the efficacy of a transdiagnostic trait-focused web-based intervention aimed at reducing symptoms of common mental disorders in university students. Method Students were recruited online (n = 1047, age: M = 21.8, SD = 4.2) and categorised into being at high or low risk for mental disorders based on their personality traits. Participants were allocated to a cognitive-behavioural trait-focused (n = 519) or a control intervention (n = 528) using computerised simple randomisation. Both interventions were fully automated and delivered online (trial registration: ISRCTN14342225). Participants were blinded and outcomes were self-assessed at baseline, at 6 weeks and at 12 weeks after registration. Primary outcomes were current depression and anxiety, assessed on the Patient Health Questionnaire (PHQ9) and Generalised Anxiety Disorder Scale (GAD7). Secondary outcome measures focused on alcohol use, disordered eating, and other outcomes. Results Students at high risk were successfully identified using personality indicators and reported poorer mental health. A total of 520 students completed the 6-week follow-up and 401 students completed the 12-week follow-up. Attrition was high across intervention groups, but comparable to other web-based interventions. Mixed effects analyses revealed that at 12-week follow up the trait-focused intervention reduced depression scores by 3.58 (pstudents at high risk. In high-risk students, between group effect sizes were 0.58 (depression) and 0.42 (anxiety). In addition, self-esteem was improved. No changes were observed regarding the use of alcohol or disordered eating. Conclusions This study suggests that a transdiagnostic web-based intervention for

  3. Targeted prevention of common mental health disorders in university students: randomised controlled trial of a transdiagnostic trait-focused web-based intervention.

    Directory of Open Access Journals (Sweden)

    Peter Musiat

    Full Text Available BACKGROUND: A large proportion of university students show symptoms of common mental disorders, such as depression, anxiety, substance use disorders and eating disorders. Novel interventions are required that target underlying factors of multiple disorders. AIMS: To evaluate the efficacy of a transdiagnostic trait-focused web-based intervention aimed at reducing symptoms of common mental disorders in university students. METHOD: Students were recruited online (n=1047, age: M=21.8, SD=4.2 and categorised into being at high or low risk for mental disorders based on their personality traits. Participants were allocated to a cognitive-behavioural trait-focused (n=519 or a control intervention (n=528 using computerised simple randomisation. Both interventions were fully automated and delivered online (trial registration: ISRCTN14342225. Participants were blinded and outcomes were self-assessed at baseline, at 6 weeks and at 12 weeks after registration. Primary outcomes were current depression and anxiety, assessed on the Patient Health Questionnaire (PHQ9 and Generalised Anxiety Disorder Scale (GAD7. Secondary outcome measures focused on alcohol use, disordered eating, and other outcomes. RESULTS: Students at high risk were successfully identified using personality indicators and reported poorer mental health. A total of 520 students completed the 6-week follow-up and 401 students completed the 12-week follow-up. Attrition was high across intervention groups, but comparable to other web-based interventions. Mixed effects analyses revealed that at 12-week follow up the trait-focused intervention reduced depression scores by 3.58 (p<.001, 95%CI [5.19, 1.98] and anxiety scores by 2.87 (p=.018, 95%CI [1.31, 4.43] in students at high risk. In high-risk students, between group effect sizes were 0.58 (depression and 0.42 (anxiety. In addition, self-esteem was improved. No changes were observed regarding the use of alcohol or disordered eating. CONCLUSIONS

  4. Universe symmetries

    International Nuclear Information System (INIS)

    Souriau, J.M.

    1984-01-01

    The sky uniformity can be noticed in studying the repartition of objects far enough. The sky isotropy description uses space rotations. The group theory elements will allow to give a meaning at the same time precise and general to the word a ''symmetry''. Universe models are reviewed, which must have both of the following qualities: - conformity with the physic known laws; - rigorous symmetry following one of the permitted groups. Each of the models foresees that universe evolution obeys an evolution equation. Expansion and big-bang theory are recalled. Is universe an open or closed space. Universe is also electrically neutral. That leads to a work hypothesis: the existing matter is not given data of universe but it appeared by evolution from nothing. Problem of matter and antimatter is then raised up together with its place in universe [fr

  5. Universal Internet-based prevention for alcohol and cannabis use reduces truancy, psychological distress and moral disengagement: a cluster randomised controlled trial.

    Science.gov (United States)

    Newton, Nicola C; Andrews, Gavin; Champion, Katrina E; Teesson, Maree

    2014-08-01

    A universal Internet-based preventive intervention has been shown to reduce alcohol and cannabis use. The aim of this study was to examine if this program could also reduce risk-factors associated with substance use in adolescents. A cluster randomised controlled trial was conducted in Sydney, Australia in 2007-2008 to assess the effectiveness of the Internet-based Climate Schools: Alcohol and Cannabis course. The evidence-based course, aimed at reducing alcohol and cannabis use, consists of two sets of six lessons delivered approximately six months apart. A total of 764 students (mean 13.1years) from 10 secondary schools were randomly allocated to receive the preventive intervention (n=397, five schools), or their usual health classes (n=367, five schools) over the year. Participants were assessed at baseline, immediately post, and six and twelve months following the intervention on their levels of truancy, psychological distress and moral disengagement. Compared to the control group, students in the intervention group showed significant reductions in truancy, psychological distress and moral disengagement up to twelve months following completion of the intervention. These intervention effects indicate that Internet-based preventive interventions designed to prevent alcohol and cannabis use can concurrently reduce risk-factors associated with substance use in adolescents. Australian Clinical Trials Registry ACTRN: 012607000312448. Copyright © 2014 Elsevier Inc. All rights reserved.

  6. A comparison of performance of automatic cloud coverage assessment algorithm for Formosat-2 image using clustering-based and spatial thresholding methods

    Science.gov (United States)

    Hsu, Kuo-Hsien

    2012-11-01

    Formosat-2 image is a kind of high-spatial-resolution (2 meters GSD) remote sensing satellite data, which includes one panchromatic band and four multispectral bands (Blue, Green, Red, near-infrared). An essential sector in the daily processing of received Formosat-2 image is to estimate the cloud statistic of image using Automatic Cloud Coverage Assessment (ACCA) algorithm. The information of cloud statistic of image is subsequently recorded as an important metadata for image product catalog. In this paper, we propose an ACCA method with two consecutive stages: preprocessing and post-processing analysis. For pre-processing analysis, the un-supervised K-means classification, Sobel's method, thresholding method, non-cloudy pixels reexamination, and cross-band filter method are implemented in sequence for cloud statistic determination. For post-processing analysis, Box-Counting fractal method is implemented. In other words, the cloud statistic is firstly determined via pre-processing analysis, the correctness of cloud statistic of image of different spectral band is eventually cross-examined qualitatively and quantitatively via post-processing analysis. The selection of an appropriate thresholding method is very critical to the result of ACCA method. Therefore, in this work, We firstly conduct a series of experiments of the clustering-based and spatial thresholding methods that include Otsu's, Local Entropy(LE), Joint Entropy(JE), Global Entropy(GE), and Global Relative Entropy(GRE) method, for performance comparison. The result shows that Otsu's and GE methods both perform better than others for Formosat-2 image. Additionally, our proposed ACCA method by selecting Otsu's method as the threshoding method has successfully extracted the cloudy pixels of Formosat-2 image for accurate cloud statistic estimation.

  7. K2: A NEW METHOD FOR THE DETECTION OF GALAXY CLUSTERS BASED ON CANADA-FRANCE-HAWAII TELESCOPE LEGACY SURVEY MULTICOLOR IMAGES

    International Nuclear Information System (INIS)

    Thanjavur, Karun; Willis, Jon; Crampton, David

    2009-01-01

    We have developed a new method, K2, optimized for the detection of galaxy clusters in multicolor images. Based on the Red Sequence approach, K2 detects clusters using simultaneous enhancements in both colors and position. The detection significance is robustly determined through extensive Monte Carlo simulations and through comparison with available cluster catalogs based on two different optical methods, and also on X-ray data. K2 also provides quantitative estimates of the candidate clusters' richness and photometric redshifts. Initially, K2 was applied to the two color (gri) 161 deg 2 images of the Canada-France-Hawaii Telescope Legacy Survey Wide (CFHTLS-W) data. Our simulations show that the false detection rate for these data, at our selected threshold, is only ∼1%, and that the cluster catalogs are ∼80% complete up to a redshift of z = 0.6 for Fornax-like and richer clusters and to z ∼ 0.3 for poorer clusters. Based on the g-, r-, and i-band photometric catalogs of the Terapix T05 release, 35 clusters/deg 2 are detected, with 1-2 Fornax-like or richer clusters every 2 deg 2 . Catalogs containing data for 6144 galaxy clusters have been prepared, of which 239 are rich clusters. These clusters, especially the latter, are being searched for gravitational lenses-one of our chief motivations for cluster detection in CFHTLS. The K2 method can be easily extended to use additional color information and thus improve overall cluster detection to higher redshifts. The complete set of K2 cluster catalogs, along with the supplementary catalogs for the member galaxies, are available on request from the authors.

  8. The clustering-based case-based reasoning for imbalanced business failure prediction: a hybrid approach through integrating unsupervised process with supervised process

    Science.gov (United States)

    Li, Hui; Yu, Jun-Ling; Yu, Le-An; Sun, Jie

    2014-05-01

    Case-based reasoning (CBR) is one of the main forecasting methods in business forecasting, which performs well in prediction and holds the ability of giving explanations for the results. In business failure prediction (BFP), the number of failed enterprises is relatively small, compared with the number of non-failed ones. However, the loss is huge when an enterprise fails. Therefore, it is necessary to develop methods (trained on imbalanced samples) which forecast well for this small proportion of failed enterprises and performs accurately on total accuracy meanwhile. Commonly used methods constructed on the assumption of balanced samples do not perform well in predicting minority samples on imbalanced samples consisting of the minority/failed enterprises and the majority/non-failed ones. This article develops a new method called clustering-based CBR (CBCBR), which integrates clustering analysis, an unsupervised process, with CBR, a supervised process, to enhance the efficiency of retrieving information from both minority and majority in CBR. In CBCBR, various case classes are firstly generated through hierarchical clustering inside stored experienced cases, and class centres are calculated out by integrating cases information in the same clustered class. When predicting the label of a target case, its nearest clustered case class is firstly retrieved by ranking similarities between the target case and each clustered case class centre. Then, nearest neighbours of the target case in the determined clustered case class are retrieved. Finally, labels of the nearest experienced cases are used in prediction. In the empirical experiment with two imbalanced samples from China, the performance of CBCBR was compared with the classical CBR, a support vector machine, a logistic regression and a multi-variant discriminate analysis. The results show that compared with the other four methods, CBCBR performed significantly better in terms of sensitivity for identifying the

  9. Our Universe

    Science.gov (United States)

    Stern, Alan

    2001-03-01

    The Universe in which we live is unimaginably vast and ancient, with countless star systems, galaxies, and extraordinary phenomena such as black holes, dark matter, and gamma ray bursts. What phenomena remain mysteries, even to seasoned scientists? Our Universe is a fascinating collection of essays by some of the world's foremost astrophysicists. Some are theorists, some computational modelers, some observers, but all offer their insights into the most cutting-edge, difficult, and curious aspects of astrophysics. Compiled, the essays describe more than the latest techniques and findings. Each of the ten contributors offers a more personal perspective on their work, revealing what motivates them and how their careers and lives have been shaped by their desire to understand our universe. S. Alan Stern is Director of the Department of Space Studies at Southwest Research Institute in Boulder, Colorado. He is a planetary scientist and astrophysicist with both observational and theoretical interests. Stern is an avid pilot and a principal investigator in NASA's planetary research program, and he was selected to be a NASA space shuttle mission specialist finalist. He is the author of more than 100 papers and popular articles. His most recent book is Pluto & Charon (Wiley, 1997). Contributors: Dr. John Huchra, Harvard University Dr. Esther Hu, University of Hawaii, Honolulu Dr. John Mather, NASA Goddard Space Flight Center Dr. Nick Gnedin, University of Colorado, Boulder Dr. Doug Richstone, University of Michigan, Ann Arbor Dr. Bohdan Paczynski, Princeton University, NJ Dr. Megan Donahue, Space Telescope Science Institute, Baltimore, MD Dr. Jerry Ostriker, Princeton University, New Jersey G. Bothun, University of Oregon, Eugene

  10. Development and evaluation of the efficacy of a web-based 'social norms'-intervention for the prevention and reduction of substance use in a cluster-controlled trial conducted at eight German universities.

    Science.gov (United States)

    Helmer, Stefanie M; Muellmann, Saskia; Zeeb, Hajo; Pischke, Claudia R

    2016-03-11

    Previous research suggests that perceptions of peer substance use are associated with personal use. Specifically, overestimating use in the peer group is predictive of higher rates of personal substance use. 'Social norms'-interventions are based on the premise that changing these misperceived social norms regarding substance use by providing feedback on actual norms is associated with a reduction in personal substance use. Studies conducted in the U.S.A. suggest that 'social norms'-feedback is an effective strategy for reducing substance use among university students. It is unknown whether the effects of a 'social norms'-feedback on substance use can be replicated in a sample of German university students. The objective of this article is to describe the study design and aims of the 'INternet-based Social norms-Intervention for the prevention of substance use among Students' (INSIST)-study, a cluster-controlled trial examining the effects of a web-based 'social norms'- intervention in students enrolled at four intervention universities with those enrolled at four delayed intervention control universities. The INSIST-study is funded by the German Federal Ministry of Health. Eight universities in four regions in Germany will take part in the study, four serving as intervention and four as delayed intervention control universities (randomly selected within a geographic region). Six hundred students will be recruited at each university and will be asked to complete a web-based survey assessing personal and perceived substance use/attitudes towards substance use at baseline. These data will be used to develop the web-based 'social norms'-feedback tailored to gender and university. Three months after the baseline survey, students at intervention universities will receive the intervention. Two months after the launch of the intervention, students of all eight universities will be asked to complete the follow-up questionnaires to assess changes in perceptions of

  11. Comparison of Salivary pH in Diabetic Patients Referring to Diabetes Center of Shahid Sadoughi University of Medical Sciences with Non-Diabetic Controls

    Directory of Open Access Journals (Sweden)

    F Owlia

    2012-05-01

    Full Text Available Introduction: Diabetes mellitus has extensive oral consequences which could be referred to changes of saliva properties. The purpose of this study was to compare the pH of un-stimulated whole saliva between diabetic patients that referred to diabetes center of Yazd Shahid Sadoughi university and non- diabetic persons. Methods: In this Case- control study, the population consisted of 60 persons in 2 groups: Thirty diabetic patients(type 2 and 30 non-diabetic persons. Two patients of case group were excluded from study due to inconsistency of their salivary pH and pH paper. Sampling from saliva was performed after 2 hours of abstinence from eating and smoking. Then pH of samples was measured by the pH paper that was scored from 5.5 to 8. After that blood sample was taken for measuring FBS. Data from 2 groups was analyzed using t-test, Mann-Whitney test and Spearman correlation by SPSS software(ver. 12. Results: Mean pH in case and control groups was 6.11 ±0.57 and 6.66±0.64, respectively. The results showed that pH of un-stimulated whole saliva in diabetic patients was significantly lower than control group(P=0.001. Conclusion: pH of un-stimulated whole saliva in diabetic patients was lower than non-diabetic persons and pH of un-stimulated whole saliva had a reverse relationship with FBS(P=0.031.

  12. A randomized controlled trial testing the effectiveness of a universal school-based depression prevention program 'Op Volle Kracht' in the Netherlands.

    Science.gov (United States)

    Tak, Yuli R; Van Zundert, Rinka Mp; Kuijpers, Rowella Cwm; Van Vlokhoven, Boukje S; Rensink, Hettie Fw; Engels, Rutger Cme

    2012-01-10

    The incidence of depressive symptoms increases during adolescence, from 10.0% to 24.5% at age 11 to 15, respectively. Experiencing elevated levels of depressive symptoms increases the risk of a depressive disorder in adulthood. A universal school-based depression prevention program Op Volle Kracht (OVK) was developed, based on the Penn Resiliency Program, aimed at preventing the increase of depressive symptoms during adolescence and enhancing positive development. In this study the effectiveness of OVK will be tested and possible mediators of program effects will be focus of study as well. The effectiveness of OVK will be tested in a randomized controlled trial with two conditions, intervention (OVK) and control condition (care as usual). Schools are randomly assigned to research conditions. OVK will be incorporated in the school curriculum, maximizing program attendance. OVK consists of 16 lessons of 50 min, given by trained psychologists to groups of 11-15 students. OVK contains Cognitive Behavioral Therapy, social skills training, problem solving and decision making. Outcomes are measured at 6, 12, 18 and 24 months follow up, to monitor long term program effects. Primary outcome is level of depressive symptoms, secondary outcomes are: anxiety, hopelessness, cognitive bias, substance use, truancy, life satisfaction, coping, self-efficacy, optimism, happiness, friendship, school performance and school attitude. The questionnaires for students will be administered in the school setting. Parents will complete a questionnaire at baseline only. In this paper the study into the effectiveness of the depression prevention program OVK was described. It is expected that OVK will prevent the increase in depressive symptoms during adolescence and enhance positive development in the intervention condition, compared to the control condition. If OVK will be effective, it can be implemented in the school context by which numerous adolescents can be reached. Netherlands Trial

  13. A randomized controlled trial testing the effectiveness of a universal school-based depression prevention program 'Op Volle Kracht' in the Netherlands

    Directory of Open Access Journals (Sweden)

    Tak Yuli R

    2012-01-01

    Full Text Available Abstract Background The incidence of depressive symptoms increases during adolescence, from 10.0% to 24.5% at age 11 to 15, respectively. Experiencing elevated levels of depressive symptoms increases the risk of a depressive disorder in adulthood. A universal school-based depression prevention program Op Volle Kracht (OVK was developed, based on the Penn Resiliency Program, aimed at preventing the increase of depressive symptoms during adolescence and enhancing positive development. In this study the effectiveness of OVK will be tested and possible mediators of program effects will be focus of study as well. Method The effectiveness of OVK will be tested in a randomized controlled trial with two conditions, intervention (OVK and control condition (care as usual. Schools are randomly assigned to research conditions. OVK will be incorporated in the school curriculum, maximizing program attendance. OVK consists of 16 lessons of 50 min, given by trained psychologists to groups of 11-15 students. OVK contains Cognitive Behavioral Therapy, social skills training, problem solving and decision making. Outcomes are measured at 6, 12, 18 and 24 months follow up, to monitor long term program effects. Primary outcome is level of depressive symptoms, secondary outcomes are: anxiety, hopelessness, cognitive bias, substance use, truancy, life satisfaction, coping, self-efficacy, optimism, happiness, friendship, school performance and school attitude. The questionnaires for students will be administered in the school setting. Parents will complete a questionnaire at baseline only. Discussion In this paper the study into the effectiveness of the depression prevention program OVK was described. It is expected that OVK will prevent the increase in depressive symptoms during adolescence and enhance positive development in the intervention condition, compared to the control condition. If OVK will be effective, it can be implemented in the school context by which

  14. Hazard analysis and critical control points (HACCP) program implementation possibility during the preparation of lettuce salad served at State University of Londrina university restaurant/
    Possibilidade de implementação de um programa de análise de perigo e pontos críticos de controle (APPCC) na preparação de salada de alface no restaurante universitário da Universidade Estadual de Londrina

    OpenAIRE

    Massami Shimokomaki; Clarice Fujiko Yonemitsu; Rosicler Balduino Nogueira; Simone Palma Favaro

    2001-01-01

    The possibility of Hazard Analysis and Critical Control Points – HACCP- system implementation was evaluated at University Restaurant (UR) of State University of Londrina (UEL). A study was designed to assure the safety of vegetables served as raw salad. Lettuce salad was taken as example. After checking the Good Manufacturing Practice it was verified further that UR presented the necessary conditions to allow the HACCP system implementation for this product. The chemical, physical and biologi...

  15. The intelligent Universe

    International Nuclear Information System (INIS)

    Hoyle, F.

    1983-01-01

    The subject is covered in chapters, entitled: chance and the universe (synthesis of proteins; the 'primordial soup'); the gospel according to Darwin (discussion of Darwin theory of evolution); life did not originate on earth (fossils from space; life in space); the interstellar connection (living dust between the stars; bacteria in space falling to the earth; interplanetary dust); evolution by cosmic control (microorganisms; genetics); why aren't the others here (a cosmic origin of life); after the big bang (big bang and steady state); the information rich universe; what is intelligence up to; the intelligent universe. (U.K.)

  16. Universal interface on Zynq{sup ®} SoC with CAN, RS-232, Ethernet and AXI GPIO for instrumentation & control

    Energy Technology Data Exchange (ETDEWEB)

    Kumar, Abhijeet, E-mail: akumar@ipr.res.in; Rajpal, Rachana; Pujara, Harshad; Mandaliya, Hitesh; Edappala, Praveenalal

    2016-11-15

    Highlights: • We have designed Universal Interface on Zynq{sup ®} SoC with CAN, RS-232, Ethernet and AXI GPIO for Instrumentation & Control. This project is based on Zynq{sup ®}-7000 family xc7z020clg484-1 chip. • We explored the full design flow starting from the hardware development in Vivado to software development in SDK using APIs in C language and then interfacing the host application developed in LabVIEW. • We also explored how to make custom IP with AXI bus interface in Vivado. • Useful for those who wants to make custom hardware on Zynq{sup ®} SoC. - Abstract: This paper describes an application developed on the latest Zynq{sup ®}-7000 All Programmable SoC (AP SoC) [1] devices which integrate the software programmability of an ARM{sup ®}-based processor with the hardware programmability of an FPGA, on a single device. In this paper we have implemented application which uses various interfaces like CAN, RS-232, Ethernet and AXI GPIO, so that our host application running on PC in LabVIEW can communicates with any hardware which has at least any one of the available interface. Zynq-7000 All Programmable SoCs (System On Chip) infuse customizable intelligence into today’s embedded systems to suit your unique application requirements. This family of FPGA is meant for high end application because it has huge resources on single chip. It offers you to make your own custom hardware IP, in fact we have made our custom IP called myIP in our design. The beauty of this chip is that it can write drivers for your custom IP which has AXI bus layer attached. After exporting the hardware information to the Software Development Kit (SDK), the tool is able to write drivers for your custom IP. This simplifies your development to a great extent. In a way this application provides the universal interfacing option to user. User can also write the digital data on the GPIO (General Purpose Input Output) through LabVIEW Test application GUI. This project can be used

  17. Exercise as an Intervention to Reduce Study-Related Fatigue among University Students: A Two-Arm Parallel Randomized Controlled Trial.

    Directory of Open Access Journals (Sweden)

    Juriena D de Vries

    Full Text Available Many university students experience high levels of study-related fatigue. This high prevalence, and the negative impact of fatigue on health and academic performance, call for prevention and reduction of these symptoms. The primary aim of the current study was to investigate to what extent an exercise intervention is effective in reducing three indicators of study-related fatigue (emotional exhaustion, overall fatigue, and need for recovery. Effects of exercise on secondary outcomes (sleep quality, self-efficacy, physical fitness, and cognitive functioning were also investigated.Participants were students with high levels of study-related fatigue, currently not exercising or receiving other psychological or pharmacological treatments, and with no medical cause of fatigue. They were randomly assigned to either a six-week exercise intervention (low-intensity running three times a week, n = 49 or wait list (no intervention, n = 48. All participants were measured before the intervention (T0, and immediately after the intervention (T1. Exercisers were also investigated 4 weeks (T2 and 12 weeks (T3 after the intervention.Participants in the exercise condition showed a larger decrease in two of the three indicators of study-related fatigue (i.e., overall fatigue and need for recovery as compared to controls. Additionally, sleep quality and some indicators of cognitive functioning improved more among exercisers than among controls. No effects were found for self-efficacy, and physical fitness. The initial effects of the exercise intervention lasted at follow-up (T2 and T3. At 12-week follow up (T3, 80% of participants in the exercise condition still engaged in regular exercise, and further enhancements were seen for emotional exhaustion, overall fatigue, and sleep quality.These results underline the value of low-intensity exercise for university students with high levels of study-related fatigue. The follow-up effects that were found in this study imply

  18. USAID University

    Data.gov (United States)

    US Agency for International Development — USAID University is USAID's learning management system. Features include 1) Access online courses 2) Register for instructor-led courses 3)Access your student...

  19. Runaway universe

    Energy Technology Data Exchange (ETDEWEB)

    Davies, P

    1978-01-01

    The subject is covered in chapters entitled: the emerging universe (general introduction, history of astronomical and cosmological research, origins, the expanding universe, stars, galaxies, electromagnetic radiation); primeval fire (the big bang model, origin of the elements, properties of the elements and of sub-atomic particles); order out of chaos (galactic evolution, star formation, nuclear fusion, the solar system, origin of life on Earth); a star called Sol (properties of the sun and of other stars); life in the universe; the catastrophe principle (the rise and fall of cosmic order); stardoom (star evolution, neutron stars); black holes and superholes (gravitational collapse); technology and survival; the dying universe (second law of thermodynamics); worlds without end (cosmological models).

  20. Rhodes University

    African Journals Online (AJOL)

    Samridhi Sharma

    2013-10-29

    Oct 29, 2013 ... been taken may improve the reception, by the target audience, of the intended communication. This may ... alcohol marketing. Similarly .... of the intended users (Rhodes University support staff ..... Digital Human Modeling and.

  1. Undulant Universe

    Energy Technology Data Exchange (ETDEWEB)

    Barenboim, Gabriela; /Valencia U.; Mena, Olga; Quigg, Chris; /Fermilab

    2004-12-01

    If the equation of state for ''dark energy'' varies periodically, the expansion of the Universe may have undergone alternating eras of acceleration and deceleration. We examine a specific form that survives existing observational tests, does not single out the present state of the Universe as exceptional, and suggests a future much like the matter-dominated past: a smooth expansion without a final inflationary epoch.

  2. The Efficacy of a Universal School-Based Prevention Program for Eating Disorders among German Adolescents: Results from a Randomized-Controlled Trial.

    Science.gov (United States)

    Warschburger, Petra; Zitzmann, Jana

    2018-04-10

    Disordered eating is highly prevalent during adolescence and has a detrimental effect on further development. Effective prevention programs are needed to prevent unhealthy developmental trajectories. This study evaluated the efficacy of the POPS-program (POtsdam Prevention at Schools), a universal school-based eating disorder prevention program for adolescents. In a cluster-randomized design, we compared the intervention group receiving the prevention program to a waiting control group. Outcomes included indicators of disordered eating and relevant risk factors for eating disorders (body dissatisfaction, internalization of the thin ideal, perceived media pressure, perfectionism, emotional element of exercise, social comparison, and perceived teasing). Questionnaires were administered at the start of the intervention, 3 and 12 months post intervention. At baseline, 1112 adolescents aged 10 to 16 years participated (49% girls; 51% intervention group). Intention-to-treat analyses with the complete data set and per-protocol analyses as a completer analysis were performed. The intervention group showed a more favorable course compared to the control group regarding all observed risk factors for eating disorders except for perceived teasing. Effect sizes were small but comparable to other primary prevention programs. At 1-year follow-up, a small but significant effect on disordered eating was observed. Results of the per-protocol analyses were mostly confirmed by the intention-to-treat analyses. Results were promising for both genders although girls benefited more regarding disordered eating and internalization of the thin ideal. Further studies are warranted examining successful program elements and whether gender-specific programs are needed.

  3. HIV prevalence and related risk behaviours in female seasonal farm workers in Souss Massa Draa, Morocco: results from a cross-sectional survey using cluster-based sampling.

    Science.gov (United States)

    Bozicevic, Ivana; Guezzar, Fatiha; Stulhofer, Aleksandar; Bennani, Aziza; Handanagic, Senad; Barbaric, Jelena; El Rhilani, Houssine; Alami, Kamal; Khattabi, Hamida; Riedner, Gabriele; Maaroufi, Abderrahmane

    2017-06-08

    To determine prevalence of HIV and HIV-related behaviours in female seasonal farm workers (FSFWs) in two provinces of Souss Massa Draa (SMD) region in Morocco. SMD has a higher burden of HIV compared with other parts of Morocco and is characterised by a substantial aggregation of FSFW. We carried out a cross-sectional HIV biobehavioural survey using cluster-based sampling of farms in the provinces Chtouka Aït Baha and Taroudant Ouled Teïma in 2014. HIV testing was done using the Determine HIV-1/2 rapid test and reactive specimens were tested using ELISA and western blot. Collected data were post hoc weighted for region-based stratification and adjusted for clustering effects using complex survey functions of SPSS (V.21). Among those eligible to participate, the response rate was 92.8%. HIV prevalence was 0.9% (95% CI 0.4% to 2.4%) among 520 recruited participants. A high proportion of respondents (67.7%) had no education. Ever having sex was reported by 79.8% and among these, 12.7% ever exchanged sex for money or goods. Sixty-one per cent reported condom use at most recent commercial vaginal sex in the past 12 months. STI symptom recognition was found to be low because 62.4% and 46.8% of FSFW could not report any STI symptoms in men and women, respectively. Twenty-seven per cent of respondents had an HIV test in the past 12 months. In multivariable analysis, those with primary or higher education (adjusted OR (aOR)=2.38, 95% CI 1.33 to 4.27) and those who participated in an HIV educational session at their workplace (aOR=11.00, 95% CI 3.99 to 30.31) had higher odds of ever been tested for HIV. Although we found a relatively low HIV prevalence among FSFW in SMD, HIV interventions should be intensified, in particular, in a subgroup of women who are involved in sex work. Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://www.bmj.com/company/products-services/rights-and-licensing/.

  4. Hierarchical cluster-based partial least squares regression (HC-PLSR) is an efficient tool for metamodelling of nonlinear dynamic models.

    Science.gov (United States)

    Tøndel, Kristin; Indahl, Ulf G; Gjuvsland, Arne B; Vik, Jon Olav; Hunter, Peter; Omholt, Stig W; Martens, Harald

    2011-06-01

    Deterministic dynamic models of complex biological systems contain a large number of parameters and state variables, related through nonlinear differential equations with various types of feedback. A metamodel of such a dynamic model is a statistical approximation model that maps variation in parameters and initial conditions (inputs) to variation in features of the trajectories of the state variables (outputs) throughout the entire biologically relevant input space. A sufficiently accurate mapping can be exploited both instrumentally and epistemically. Multivariate regression methodology is a commonly used approach for emulating dynamic models. However, when the input-output relations are highly nonlinear or non-monotone, a standard linear regression approach is prone to give suboptimal results. We therefore hypothesised that a more accurate mapping can be obtained by locally linear or locally polynomial regression. We present here a new method for local regression modelling, Hierarchical Cluster-based PLS regression (HC-PLSR), where fuzzy C-means clustering is used to separate the data set into parts according to the structure of the response surface. We compare the metamodelling performance of HC-PLSR with polynomial partial least squares regression (PLSR) and ordinary least squares (OLS) regression on various systems: six different gene regulatory network models with various types of feedback, a deterministic mathematical model of the mammalian circadian clock and a model of the mouse ventricular myocyte function. Our results indicate that multivariate regression is well suited for emulating dynamic models in systems biology. The hierarchical approach turned out to be superior to both polynomial PLSR and OLS regression in all three test cases. The advantage, in terms of explained variance and prediction accuracy, was largest in systems with highly nonlinear functional relationships and in systems with positive feedback loops. HC-PLSR is a promising approach for

  5. Hierarchical Cluster-based Partial Least Squares Regression (HC-PLSR is an efficient tool for metamodelling of nonlinear dynamic models

    Directory of Open Access Journals (Sweden)

    Omholt Stig W

    2011-06-01

    Full Text Available Abstract Background Deterministic dynamic models of complex biological systems contain a large number of parameters and state variables, related through nonlinear differential equations with various types of feedback. A metamodel of such a dynamic model is a statistical approximation model that maps variation in parameters and initial conditions (inputs to variation in features of the trajectories of the state variables (outputs throughout the entire biologically relevant input space. A sufficiently accurate mapping can be exploited both instrumentally and epistemically. Multivariate regression methodology is a commonly used approach for emulating dynamic models. However, when the input-output relations are highly nonlinear or non-monotone, a standard linear regression approach is prone to give suboptimal results. We therefore hypothesised that a more accurate mapping can be obtained by locally linear or locally polynomial regression. We present here a new method for local regression modelling, Hierarchical Cluster-based PLS regression (HC-PLSR, where fuzzy C-means clustering is used to separate the data set into parts according to the structure of the response surface. We compare the metamodelling performance of HC-PLSR with polynomial partial least squares regression (PLSR and ordinary least squares (OLS regression on various systems: six different gene regulatory network models with various types of feedback, a deterministic mathematical model of the mammalian circadian clock and a model of the mouse ventricular myocyte function. Results Our results indicate that multivariate regression is well suited for emulating dynamic models in systems biology. The hierarchical approach turned out to be superior to both polynomial PLSR and OLS regression in all three test cases. The advantage, in terms of explained variance and prediction accuracy, was largest in systems with highly nonlinear functional relationships and in systems with positive feedback

  6. Controle Interno e as Fundações de apoio à pesquisa universitária: uma análise do funcionamento do Controle Interno nas Fundações da Universidade Federal de Santa Catarina no ano de 2010 = Internal Control and foundations to support university research: a review of the functioning of internal control in the foundations of the Federal University of Santa Catarina in 2010

    Directory of Open Access Journals (Sweden)

    Natalia Kirchner Azevedo

    2010-09-01

    Full Text Available O Controle Interno tem por finalidade planejar, organizar e supervisionar informações por meio de medidas que buscam proteger o patrimônio, incrementar a eficiência operacional e promover obediência às diretrizes administrativas. Por gerenciar recursos públicos, o Controle Interno torna-se um importante órgão que atua como supervisor dos procedimentos internos. Diante disso, este artigo tem como objetivo verificar a existência e a atuação do Controle Interno nas cinco Fundações de Amparo à Pesquisa da Universidade Federal de Santa Catarina. Trata-se de um estudo descritivo, com abordagem qualitativa dos dados e fontes de coleta dos dados primária. Conclui-se que, apesar da importância do Controle Interno, apenas três Fundações apresentam um órgão de controle; constatou-se também que alguns dos procedimentos que auxiliam o desenvolvimento harmônico e possibilitam maior eficiência nas operações não são praticados em várias das Fundações analisadas, procedimentos como: plano de carreira, relatórios de desempenho, manuais internos, rotação de funcionários e segregação de funções. Os Controles Internos analisados demonstram integralizar informações entre os setores contábil, administrativo, financeiro, de pessoal e a unidade de gerenciamento de projetos. Os gestores reconhecem a importância do Controle Interno para a Fundação e são unanimes em afirmar o interesse nisso para a promoção da eficiência operacional.Internal control is designed to plan, organize and supervise information through measures that seek to protect assets, increase operational efficiency and promote adherence to administrative policies. Manage public resources for internal control becomes an important organ of internal control that acts as a supervisor of internal procedures. Thus, this study aims to verify the existence and operation of internal control in five Foundations of the Federal University of Santa Catarina. This is a

  7. Universal quantum interfaces

    International Nuclear Information System (INIS)

    Lloyd, Seth; Landahl, Andrew J.; Slotine, Jean-Jacques E.

    2004-01-01

    To observe or control a quantum system, one must interact with it via an interface. This article exhibits simple universal quantum interfaces--quantum input/output ports consisting of a single two-state system or quantum bit that interacts with the system to be observed or controlled. It is shown that under very general conditions the ability to observe and control the quantum bit on its own implies the ability to observe and control the system itself. The interface can also be used as a quantum communication channel, and multiple quantum systems can be connected by interfaces to become an efficient universal quantum computer. Experimental realizations are proposed, and implications for controllability, observability, and quantum information processing are explored

  8. Plasma universe

    International Nuclear Information System (INIS)

    Alfven, H.

    1986-04-01

    Traditionally the views in our cosmic environment have been based on observations in the visual octave of the electromagnetic spectrum, during the last half-century supplemented by infrared and radio observations. Space research has opened the full spectrum. Of special importance are the X-ray-gamma-ray regions, in which a number of unexpected phenomena have been discovered. Radiations in these regions are likely to originate mainly from magnetised cosmic plasma. Such a medium may also emit synchrotron radiation which is observable in the radio region. If we try to base a model of the universe on the plasma phenomena mentioned we find that the plasma universe is drastically different from the traditional visual universe. Information about the plasma universe can also be obtained by extrapolation of laboratory experiments and magnetospheric in situ measurements of plasma. This approach is possible because it is likely that the basic properties of plasma are the same everywhere. In order to test the usefulness of the plasma universe model we apply it to cosmogony. Such an approach seems to be rather successful. For example, the complicated structure of the Saturnian C ring can be accounted for. It is possible to reconstruct certain phenomena 4-5 bilions years ago with an accuracy of better than 1 percent

  9. Baby universes

    International Nuclear Information System (INIS)

    Strominger, A.

    1988-01-01

    This paper discusses how the subject of baby universes and their effects on spacetime coupling constants is in its infancy and rapidly developing. The subject is based on the non-existent (even by physicists' standards) Euclidean formulation of quantum gravity, and it is therefore necessary to make a number of assumptions in order to proceed. Nevertheless, the picture which has emerged is quite appealing: all spacetime coupling constants become dynamical variables when the effects of baby universes are taken into account. This fact might even solve the puzzle of the cosmological constant. The subject therefore seems worth further investigation

  10. The Undesirable Behaviors of Students in Academic Classrooms, and the Discipline Strategies Used by Faculty Members to Control Such Behaviors from the Perspective of the College of Education Students in King Saud University

    Science.gov (United States)

    Al Qahtani, Norah Saad Sultan

    2016-01-01

    This study aimed to identify the undesirable students' behaviors in academic classrooms, and the disciplinary, preventive and therapeutic strategies that will be used by faculty members to control those behaviors from the perspective of the College of Education's students in King Saud University. The results of the study has shown that the…

  11. The Beliefs, Attitudes and Views of University Students about Anger and the Effects of Cognitive Behavioral Therapy-Oriented Anger Control and Anxiety Management Programs on Their Anger Management Skill Levels

    Science.gov (United States)

    Karahan, T. Fikret; Yalçin, B. Murat; Erbas, Melda M.

    2014-01-01

    This study was designed as a qualitative focus group using a randomized controlled trail with a mixed methodology. The study has dual aims. First we searched the beliefs, attitudes and views of 176 university students on how to deal with anger using eight focus discussion groups. The anxiety and anger levels of these students were investigated…

  12. The geo-spatial information infrastructure at the Centre for Control and Prevention of Zoonoses, University of Ibadan, Nigeria: an emerging sustainable One-Health pavilion.

    Science.gov (United States)

    Olugasa, B O

    2014-12-01

    The World-Wide-Web as a contemporary means of information sharing offers a platform for geo-spatial information dissemination to improve education about spatio-temporal patterns of disease spread at the human-animal-environment interface in developing countries of West Africa. In assessing the quality of exposure to geospatial information applications among students in five purposively selected institutions in West Africa, this study reviewed course contents and postgraduate programmes in zoonoses surveillance. Geospatial information content and associated practical exercises in zoonoses surveillance were scored.. Seven criteria were used to categorize and score capability, namely, spatial data capture; thematic map design and interpretation; spatio-temporal analysis; remote sensing of data; statistical modelling; the management of spatial data-profile; and web-based map sharing operation within an organization. These criteria were used to compute weighted exposure during training at the institutions. A categorical description of institution with highest-scoring of computed Cumulative Exposure Point Average (CEPA) was based on an illustration with retrospective records of rabies cases, using data from humans, animals and the environment, that were sourced from Grand Bassa County, Liberia to create and share maps and information with faculty, staff, students and the neighbourhood about animal bite injury surveillance and spatial distribution of rabies-like illness. Uniformly low CEPA values (0-1.3) were observed across academic departments. The highest (3.8) was observed at the Centre for Control and Prevention of Zoonoses (CCPZ), University of Ibadan, Nigeria, where geospatial techniques were systematically taught, and thematic and predictive maps were produced and shared online with other institutions in West Africa. In addition, a short course in zoonosis surveillance, which offers inclusive learning in geospatial applications, is taught at CCPZ. The paper

  13. Stiegler's University

    Science.gov (United States)

    Featherstone, Mark

    2017-01-01

    In this article, Mark Featherstone proposes to explore Bernard Stiegler's work through the lens of the politics of education and in particular the idea of the university, which becomes a pharmacological space of, on the one hand, utopian possibility, and, on the other hand, dystopian limitation, destruction, and death in his recent "States of…

  14. Effects of cognitive behavioural therapy for insomnia on the mental health of university students: study protocol for a randomized controlled trial.

    Science.gov (United States)

    Freeman, Daniel; Sheaves, Bryony; Goodwin, Guy M; Yu, Ly-Mee; Harrison, Paul J; Emsley, Richard; Bostock, Sophie; Foster, Russell G; Wadekar, Vanashree; Hinds, Christopher; Espie, Colin A

    2015-05-28

    Insomnia, defined as repeated difficulties getting or staying asleep, is common in the general population. Such sleep difficulties are a problem in their own right, but increasingly it is being recognised that they may also be a contributory factor in the development of a wide range of mental health problems. Our focus is upon the relationship between insomnia and psychotic experiences, such as paranoia and hallucinations. Psychotic experiences commonly occur in mild forms in the general population and have been linked to disrupted sleep. These psychotic-like experiences raise the risk of development of a clinical disorder. Our aim is to reduce insomnia in a large general population group, and examine the effect on paranoia and hallucinations at the age when mental health problems typically emerge. The primary hypotheses are that cognitive behaviour therapy (CBT) for insomnia will reduce insomnia and also levels of paranoia and hallucinations. The theoretical links will be substantiated by a planned mediation analysis. Improvements in a number of other mental health outcomes are also predicted. We will carry out a parallel group, randomised controlled trial of 2,614 students with insomnia in universities across the UK. In the Oxford Access for Students Improving Sleep (OASIS) trial, participants will be randomised to digital CBT for insomnia (in addition to treatment as usual) or treatment as usual. Online assessments will take place at zero, three, 10 (post-treatment), and 22 (follow-up) weeks. Primary outcomes are insomnia and psychotic-like experiences (paranoia or hallucinatory experiences) at 10 weeks. Secondary outcomes are levels of mania, depression, anxiety, nightmares, psychological wellbeing, and the development of mental health disorders. All main analyses will be carried out at the end of the last follow-up assessment and will be based on the intention-to-treat principle. The trial is funded by the Wellcome Trust. This study will be the first large

  15. University writing

    Directory of Open Access Journals (Sweden)

    Miguel Zabalza Beraza

    2013-01-01

    Full Text Available Writing in the University is a basic necessity and a long-range educational purpose. One of the basic characteristics of the university context is that it requires writing both as a tool of communication and as a source of intellectual stimulation. After establishing the basic features of academic writing, this article analyzes the role of writing for students (writing to learn and for teachers (write to plan, to reflect, to document what has been done. The article also discusses the contributions of writing for both students and teachers together: writing to investigate. Finally, going beyond what writing is as academic tool, we conclude with a more playful and creative position: writing for pleasure and enjoyment.

  16. Universe unfolding

    International Nuclear Information System (INIS)

    King, I.R.

    1976-01-01

    Topics covered the setting; looking at the stars; the earth; time, place and the sky; our satellite, the moon; orbits and motion; the motions of the planets; the Copernican revolution; the planets; the other bodies of the solar system; ages, origins, and life; introducing the stars; sorting out the stars; binary stars--two are better than one; variable stars--inconstancy as a virtue; the secrets of starlight--unraveling the spectrum; the sun--our own star; the structure of a star; interstellar material; the Milky Way, our home galaxy; galaxies--the stellar continents; cosmic violence--from radio galaxies to quasars; the universe; and epilogue. The primary emphasis is on how we have come to know what we know about the universe. Star maps are included

  17. Development of Universal Methodology of Specimen Free Nondestructive Inspection (Control) of Mechanical Properties of NPP Equipment Metal in all Stages of Lifetime

    International Nuclear Information System (INIS)

    Bakirov, M.; Chubarov, S.; Frolov, I.; Kiselev, I.; Gastrock, J.; Dripke, M.

    2011-01-01

    Ever-increasing requirements for reliability and safety of equipment in nuclear power plants (NPP) dictate a necessity to obtain reliable and validated information about the condition of materials in the most safety-relevant and economically vital systems structures and components (SSC). Thus it is a state of science and technology approach to use one method, one methodic and one methodology to facilitate these goals with the purpose of keeping NPPs operating safely by virtue of knowing the state of ageing they are in (with respect to design limits and margins). Method of the control/measurement/testing - how to conduct measurements; methodic - how to interpret the results of measurement; methodology - the program of the control/inspection and testing programmes: localities to conduct the tests, how often, and to follow evolution of test results with the aim of acting before a failure occurs. Such methodology should be based on the use of specimen-free nondestructive method of the inspection (control), which could be used, successfully at all stages of life cycle of the equipment: manufacturing, construction, installation of NPP, operation and during the NPP operation through integration into the Plant Life Management (PLiM) Programme. It will facilitate a real picture of change (degradation) of a SSC material's condition in the zones subjected to the harshest stressors (neutron irradiation, erosion-corrosion/flow, thermal fatigue, vibration etc). Currently, there are various approaches used in the world to follow NPP ageing degradation, but until now, no specific methodology is used that could supply all the necessary information. Therefore, there is no way to use various results. Thanks to considerable advances over the last 20 years or so, the science of hardness testing offers an elegant, non-destructive way to obtain vital materials properties - even in-situ on operating SSC. In particular, the material's elastic-plastic condition may be measured, giving

  18. University physics

    CERN Document Server

    Arfken, George

    1984-01-01

    University Physics provides an authoritative treatment of physics. This book discusses the linear motion with constant acceleration; addition and subtraction of vectors; uniform circular motion and simple harmonic motion; and electrostatic energy of a charged capacitor. The behavior of materials in a non-uniform magnetic field; application of Kirchhoff's junction rule; Lorentz transformations; and Bernoulli's equation are also deliberated. This text likewise covers the speed of electromagnetic waves; origins of quantum physics; neutron activation analysis; and interference of light. This publi

  19. Human universe

    CERN Document Server

    Cox, Brian

    2014-01-01

    Human life is a staggeringly strange thing. On the surface of a ball of rock falling around a nuclear fireball in the blackness of a vacuum the laws of nature conspired to create a naked ape that can look up at the stars and wonder where it came from. What is a human being? Objectively, nothing of consequence. Particles of dust in an infinite arena, present for an instant in eternity. Clumps of atoms in a universe with more galaxies than people. And yet a human being is necessary for the question itself to exist, and the presence of a question in the universe - any question - is the most wonderful thing. Questions require minds, and minds bring meaning. What is meaning? I don't know, except that the universe and every pointless speck inside it means something to me. I am astonished by the existence of a single atom, and find my civilisation to be an outrageous imprint on reality. I don't understand it. Nobody does, but it makes me smile. This book asks questions about our origins, our destiny, and our place i...

  20. 23rd June 2010 - University of Bristol Head of the Aerospace Engineering Department and Professor of Aerospace Dynamics N. Lieven visiting CERN control centre with Beams Department Head P. Collier, visiting the LHC superconducting magnet test hall with R. Veness and CMS control centre with Collaboration Spokesperson G. Tonelli and CMS User J. Goldstein.

    CERN Multimedia

    Jean-Claude Gadmer

    2010-01-01

    23rd June 2010 - University of Bristol Head of the Aerospace Engineering Department and Professor of Aerospace Dynamics N. Lieven visiting CERN control centre with Beams Department Head P. Collier, visiting the LHC superconducting magnet test hall with R. Veness and CMS control centre with Collaboration Spokesperson G. Tonelli and CMS User J. Goldstein.

  1. The effectiveness of the Incredible Years Parents and Babies Program as a universal prevention intervention for parents of infants in Denmark: study protocol for a pilot randomized controlled trial

    DEFF Research Database (Denmark)

    Pontoppidan, Maiken W.

    2015-01-01

    support parents in providing sensitive and responsive care, and reinforce healthy development for their infants. This study aims to evaluate the impact of the Incredible Years™ Parents and Babies Program in a universal setting for parents with infants. Methods/Design: This is a pragmatic, two......-arm, parallel, pilot, randomized controlled trial (RCT) where 128 families with newborn infants up to four-months-old are recruited in two municipalities in Denmark. Families are randomized to the Incredible Years Parents and Babies Program or usual care with a 2:1 allocation ratio. The primary outcome....... Discussion: This is the first RCT of the Incredible Years Parents and Babies Program, and one of the first rigorous evaluations of a universally offered preventive intervention for parents with infants. The trial will provide important information on the effectiveness of a relatively brief, universally...

  2. A randomized controlled trial of a brief online intervention to reduce alcohol consumption in new university students: Combining self-affirmation, theory of planned behaviour messages, and implementation intentions.

    Science.gov (United States)

    Norman, Paul; Cameron, David; Epton, Tracy; Webb, Thomas L; Harris, Peter R; Millings, Abigail; Sheeran, Paschal

    2018-02-01

    Excessive alcohol consumption increases when students enter university. This study tests whether combining (1) messages that target key beliefs from the theory of planned behaviour (TPB) that underlie binge drinking, (2) a self-affirmation manipulation to reduce defensive processing, and (3) implementation intentions (if-then plans to avoid binge drinking) reduces alcohol consumption in the first 6 months at university. A 2 (self-affirmation) × 2 (TPB messages) × 2 (implementation intention) between-participants randomized controlled trial with 6-month follow-up. Before starting university, students (N = 2,951) completed measures of alcohol consumption and were randomly assigned to condition in a full-factorial design. TPB cognitions about binge drinking were assessed immediately post-intervention (n = 2,682). Alcohol consumption was assessed after 1 week (n = 1,885), 1 month (n = 1,389), and 6 months (n = 892) at university. TPB cognitions were assessed again at 1 and 6 months. Participants who received the TPB messages had significantly less favourable cognitions about binge drinking (except perceived control), consumed fewer units of alcohol, engaged in binge drinking less frequently, and had less harmful patterns of alcohol consumption during their first 6 months at university. The other main effects were non-significant. The findings support the use of TPB-based interventions to reduce students' alcohol consumption, but question the use of self-affirmation and implementation intentions before starting university when the messages may not represent a threat to self-identity and when students may have limited knowledge and experience of the pressures to drink alcohol at university. Statement of contribution What is already known on this subject? Alcohol consumption increases when young people enter university. Significant life transitions represent potential teachable moments to change behaviour. Interventions with a strong theoretical

  3. Sustainable Universities

    DEFF Research Database (Denmark)

    Grindsted, Thomas Skou

    2011-01-01

    Declarations on Sustainability in Higher Education (SHE) can be viewed as a piece of international regulation. Over the past 30 years research at universities has produced convincing data to warn about deterioration of the environment, resource scarcity and the need for sustainability. This in turn....... Declarations tend to have impact on three trends. Firstly, there is emerging international consensus on the university’s role and function in relation to sustainable development; secondly, the emergence of national legislation, and thirdly, an emerging international competition to be leader in sustainable...

  4. Open University

    CERN Multimedia

    Pentz,M

    1975-01-01

    Michel Pentz est née en Afrique du Sud et venu au Cern en 1957 comme physicien et président de l'associaion du personnel. Il est également fondateur du mouvement Antiapartheid de Genève et a participé à la fondation de l'Open University en Grande-Bretagne. Il nous parle des contextes pédagogiques, culturels et nationaux dans lesquels la méthode peut s'appliquer.

  5. Controlled, prospective, randomized, clinical split-mouth evaluation of partial ceramic crowns luted with a new, universal adhesive system/resin cement: results after 18 months.

    Science.gov (United States)

    Vogl, Vanessa; Hiller, Karl-Anton; Buchalla, Wolfgang; Federlin, Marianne; Schmalz, Gottfried

    2016-12-01

    A new universal adhesive with corresponding luting composite was recently marketed which can be used both, in a self-etch or in an etch-and-rinse mode. In this study, the clinical performance of partial ceramic crowns (PCCs) inserted with this adhesive and the corresponding luting material used in a self-etch or selective etch approach was compared with a self-adhesive universal luting material. Three PCCs were placed in a split-mouth design in 50 patients. Two PCCs were luted with a combination of a universal adhesive/resin cement (Scotchbond Universal/RelyX Ultimate, 3M ESPE) with (SB+E)/without (SB-E) selective enamel etching. Another PCC was luted with a self-adhesive resin cement (RelyX Unicem 2, 3M ESPE). Forty-eight patients were evaluated clinically according to FDI criteria at baseline and 6, 12 and 18 months. For statistical analyses, the chi-square test (α = 0.05) and Kaplan-Meier analysis were applied. Clinically, no statistically significant differences between groups were detected over time. Within groups, clinically significant increase for criterion "marginal staining" was detected for SB-E over 18 months. Kaplan-Meier analysis revealed significantly higher retention rates for SB+E (97.8 %) and SB-E (95.6 %) in comparison to RXU2 (75.6 %). The 18-month clinical performance of a new universal adhesive/composite combination showed no differences with respect to bonding strategy and may be recommended for luting PCCs. Longer-term evaluation is needed to confirm superiority of SB+E over SB-E. At 18 months, the new multi-mode adhesive, Scotchbond Universal, showed clinically reliable results when used for luting PCCs.

  6. Geneva University

    CERN Multimedia

    2009-01-01

    École de physique - Département de physique nucléaire et corspusculaire 24, quai Ernest-Ansermet 1211 GENÈVE 4 Tél: (022) 379 62 73 - Fax: (022) 379 69 92 Monday 9 March 2009 COLLOQUIUM at 17:00 – Stückelberg Auditorium Are We Descended From Heavy Neutrinos? Prof. Boris Kayser / Fermilab (Fermi National Accelerator Center, Geneva, Illinois, USA) Neutrinos are among the most abundant particles in the universe. The discovery that they have nonzero masses has raised a number of very interesting questions about them, and about their connections to other areas of physics and to cosmology. After briefly reviewing what has been learned about the neutrinos so far, we will identify the major open questions, explain why they are interesting, and discuss ideas and plans for answering them through future experiments. We will highlight a particularly intriguing question: Are neutrinos the key to understanding why the universe contains matter but almost no antimatter, making it s...

  7. Geneva University

    CERN Multimedia

    2009-01-01

    École de physique - Département de physique nucléaire et corpusculaire 24, quai Ernest-Ansermet 1211 GENÈVE 4 Tél: (022) 379 62 73 - Fax: (022) 379 69 92 Wednesday 13 May 2009 PARTICLE PHYSICS SEMINAR at 17:00 – Stückelberg Auditorium Observing the extreme universe with the Fermi Gamma-ray Space Telescope Prof. Olaf Reimer / Stanford University The Fermi Gamma-ray Space Telescope (FGST, formerly GLAST) is an international observatory-type satellite mission with a physics program spanning from gamma-ray astronomy to particle astrophysics and cosmology. FGST was launched on June 11, 2008 and is successfully conducting science observations of the high-energy gamma-ray sky since August 2008. A varienty of discoveries has been made already, including monitoring rapid blazar variability, the existence of GeV gamma-ray bursts, and numerous new gamma-ray sources of different types, including those belonging to previously unknown gamma-ray source classes like msPSRs, globula...

  8. The relative impact of country of origin and universal contingencies on internationalization strategies and corporate control in multinational enterprises : Worldwide and European perspectives

    NARCIS (Netherlands)

    Harzing, A.W.; Sorge, A.

    We examine the importance of country-of-origin effects and of universal contingencies such as industrial recipes in organizational practices at the international level of multinational enterprises. This is based on a study comparing European (Finnish, French, German, Dutch, Swiss, Swedish, British),

  9. The Role of Age and Gender in the Relationship between (Attitude, Subjective Norm and Perceived Behavioural Control) and Adoption of E-Learning at Jordanian Universities

    Science.gov (United States)

    altawallbeh, Manal; Thiam, Wun; alshourah, Sultan; Fong, Soon Fook

    2015-01-01

    The purpose of this study is to examine the moderating factors that effect on adaption e-learning among students in Jordanian universities. Two models of e-learning that are observed among adopting institutions are: E-learning as a supplement to traditional classroom model have been introduced by the respondents in this research. The paper takes a…

  10. A randomized controlled trial testing the effectiveness of a universal school-based depression prevention program 'Op Volle Kracht' in the Netherlands

    NARCIS (Netherlands)

    Tak, Y.R.; Zundert, R.M.P. van; Kuijpers, R.C.W.M.; Vlokhoven, B.S. van; Rensink, H.F.W.; Engels, R.C.M.E.

    2012-01-01

    Background: The incidence of depressive symptoms increases during adolescence, from 10.0% to 24.5% at age 11 to 15, respectively. Experiencing elevated levels of depressive symptoms increases the risk of a depressive disorder in adulthood. A universal school-based depression prevention program Op

  11. Exercise as an intervention to reduce study-related fatigue among university students: A two-arm parallel randomized controlled trial

    NARCIS (Netherlands)

    Vries, J.D. de; Hooff, M.L.M. van; Geurts, S.A.E.; Kompier, M.A.J.

    2016-01-01

    Background Many university students experience high levels of study-related fatigue. This high prevalence, and the negative impact of fatigue on health and academic performance, call for prevention and reduction of these symptoms. The primary aim of the current study was to investigate to what

  12. Geneva University

    CERN Multimedia

    École de physique - Département de physique nucléaire et corspusculaire 24, quai Ernest-Ansermet 1211 GENÈVE 4 Tél: (022) 379 62 73 - Fax: (022) 379 69 92 Monday 7 December 2009 PHYSICS COLLOQUIUM at 17:00 – Stückelberg Auditorium Topological insulators and topological superconductors Professor Shoucheng Zhang Department of Physics, Stanford University, CA   Recently, a new class of topological states has been theoretically predicted and experimentally realized. The topological insulators have an insulating gap in the bulk, but have topologically protected edge or surface states due to the time reversal symmetry. In two dimensions the edge states give rise to the quantum spin Hall (QSH) effect, in the absence of any external magnetic field. I shall review the theoretical prediction of the QSH state in HgTe/CdTe semiconductor quantum wells, and its recent experimental observation. The edge states of the QSH state supports fr...

  13. Geneva University

    CERN Multimedia

    École de physique - Département de physique nucléaire et corspusculaire 24, quai Ernest-Ansermet 1211 GENÈVE 4 Tél: (022) 379 62 73 - Fax: (022) 379 69 92 Wednesday 18 November  2009 PARTICLE PHYSICS SEMINAR at 17:00 – Stückelberg Auditorium Highlights of the European Strategy Workshop for Future Neutrino Physics Dr Ilias Efthymiopoulos, CERN   Seminar cancelled! Information Organizer : J.-S. Graulich Monday 7 December 2009 PHYSICS COLLOQUIUM at 17:00 – Stückelberg Auditorium Topological insulators and topological superconductors Professor Shoucheng Zhang Department of Physics, Stanford University, CA   Recently, a new class of topological states has been theoretically predicted and experimentally realized. The topological insulators have an insulating gap in the bulk, but have topologically protected edge or surface states due to the time reversal symmetry. In two dimensions the edge s...

  14. Geneva University

    CERN Multimedia

    2008-01-01

    Ecole de physique - Département de physique nucléaire et corpusculaire 24, Quai Ernest-Ansermet 1211 GENEVE 4 Tél: (022) 379 62 73 Fax: (022) 379 69 92 Monday 28 April 2008 PHYSICS COLLOQUIUM at 17.00 – Stückelberg Auditorium Gravity : an Emergent Perspective by Prof. Thanu Padmanabhan, Pune University Dean, Ganeshkhind, Pune, India I will motivate and describe a novel perspective in which gravity arises as an emergent phenomenon, somewhat like elasticity. This perspective throws light on several issues which are somewhat of a mystery in the conventional approach. Moreover it provides new insights on the dark energy problem. In fact, I will show that it is necessary to have such an alternative perspective in order to solve the cosmological constant problem.Information: http://theory.physics.unige.ch/~fiteo/seminars/COL/collist.html

  15. Universal Alienation

    Directory of Open Access Journals (Sweden)

    David Harvey

    2018-05-01

    Full Text Available This article is part of a debate between David Harvey, Michael Hardt and Toni Negri. It takes Marx’s bicentenary as occasion for an update of his concept of alienation. The paper asks: how are we to interpret universal alienation and from whence does it come? Marx radically reformulated the concept of alienation in the Grundrisse. The humanism of the early Marx can be re-rooted and reconceptualised in the scientific mode proposed in the Grundrisse. In the Grundrisse, the universality of alienation is specific to capitalism’s historical evolution. Today, alienation exists almost everywhere. It exists at work in production, at home in consumption, and it dominates much of politics and daily life. Such trends intensify through the application of information technologies and artificial intelligence. Widespread alienation has resulted in Occupy movements as well as right-wing populism and bigoted nationalist and racist movements. Donald Trump is the President of alienation. The circulation of capital as totality consists of the three key moments of production, circulation and distribution. A lot of contemporary economic struggles are now occurring at the point of realisation rather than at the point of production. Protests are therefore today often expressions of broad-based discontent. Our future is dictated by the need to redeem our debts. Under such conditions democracy becomes a sham. The big question is what forms of social movement can help us get out of the state-finance nexus. The theory of objective alienation along with an understanding of its subjective consequences is one vital key to unlock the door of a progressive politics for the future.

  16. Standardization of tests of quality control with the aid of quality tools used in management systems of processes at the Sector of Nuclear Medicine of the University Hospital of Santa Maria, Rio Grande do Sul

    International Nuclear Information System (INIS)

    Da Cas, E.V.; Weis, G.L.; Bahunhardt, T.; Shuch, L.A.; Lopes, L.F.D.

    2009-01-01

    This work tries to standardize the tests of quality control at the Sector of Nuclear Medicine at the University Hospital of Santa Maria, using tools of the quality used in systems of management of processes such as, PDCA, brainstorming, diagram of cause and effect (Ishikawa), 5W2H, verifying list and fluxogram. The tests of quality control refer to the scintillation camera (center of rotation, intrinsic uniformity, intrinsic spatial resolution and linearity, energy resolution for each radionuclide), to the dose calibrator (accuracy, reproducibility and linearity), to the Geiger-Mueller detector (reproducibility of the detector). (author)

  17. Lattice and Valence Electronic Structures of Crystalline Octahedral Molybdenum Halide Clusters-Based Compounds, Cs2[Mo6X14] (X = Cl, Br, I), Studied by Density Functional Theory Calculations.

    Science.gov (United States)

    Saito, Norio; Cordier, Stéphane; Lemoine, Pierric; Ohsawa, Takeo; Wada, Yoshiki; Grasset, Fabien; Cross, Jeffrey S; Ohashi, Naoki

    2017-06-05

    The electronic and crystal structures of Cs 2 [Mo 6 X 14 ] (X = Cl, Br, I) cluster-based compounds were investigated by density functional theory (DFT) simulations and experimental methods such as powder X-ray diffraction, ultraviolet-visible spectroscopy, and X-ray photoemission spectroscopy (XPS). The experimentally determined lattice parameters were in good agreement with theoretically optimized ones, indicating the usefulness of DFT calculations for the structural investigation of these clusters. The calculated band gaps of these compounds reproduced those experimentally determined by UV-vis reflectance within an error of a few tenths of an eV. Core-level XPS and effective charge analyses indicated bonding states of the halogens changed according to their sites. The XPS valence spectra were fairly well reproduced by simulations based on the projected electron density of states weighted with cross sections of Al K α , suggesting that DFT calculations can predict the electronic properties of metal-cluster-based crystals with good accuracy.

  18. Evaluation of strategies to control Fab light chain dimer during mammalian expression and purification: A universal one-step process for purification of correctly assembled Fab.

    Science.gov (United States)

    Spooner, Jennifer; Keen, Jenny; Nayyar, Kalpana; Birkett, Neil; Bond, Nicholas; Bannister, David; Tigue, Natalie; Higazi, Daniel; Kemp, Benjamin; Vaughan, Tristan; Kippen, Alistair; Buchanan, Andrew

    2015-07-01

    Fabs are an important class of antibody fragment as both research reagents and therapeutic agents. There are a plethora of methods described for their recombinant expression and purification. However, these do not address the issue of excessive light chain production that forms light chain dimers nor do they describe a universal purification strategy. Light chain dimer impurities and the absence of a universal Fab purification strategy present persistent challenges for biotechnology applications using Fabs, particularly around the need for bespoke purification strategies. This study describes methods to address light chain dimer formation during Fab expression and identifies a novel CH 1 affinity resin as a simple and efficient one-step purification for correctly assembled Fab. © 2015 Wiley Periodicals, Inc.

  19. Long-term outcome of a randomized controlled universal prevention trial through a positive parenting program: is it worth the effort?

    OpenAIRE

    Hahlweg, Kurt; Heinrichs, Nina; Kuschel, Annett; Bertram, Heike; Naumann, Sebastian

    2010-01-01

    Abstract Background Approximately 20% of children experience internalizing or externalizing DSM-IV-TR disorders. This prevalence rate cannot be reduced through treatment only. Effective preventive interventions are therefore urgently needed. The aim of the current investigation is to evaluate the two-year efficacy of the group Triple P parenting program administered universally for the prevention of child behavior problems. Methods Based on their respective preschool, N = 280 families were ra...

  20. Geneva University

    CERN Multimedia

    2009-01-01

    École de physique - Département de physique nucléaire et corpusculaire 24, quai Ernest-Ansermet 1211 GENÈVE 4 Tél: (022) 379 62 73 - Fax: (022) 379 69 92 Wednesday 25 March 2009 PARTICLE PHYSICS SEMINAR at 17:00 – Stückelberg Auditorium Hunting for the Higgs with D0 at the Tevatron Prof. Gustaaf Brooijmans / Columbia University The search for the Higgs boson is one of the most important endeavors in current experimental particle physics. At the eve of the LHC start, the Tevatron is delivering record luminosity allowing both CDF and D0 to explore a new region of possible Higgs masses. In this seminar, the techniques used to search for the Higgs boson at the Tevatron will be explained, limiting factors will be examined, and the sensitivity in the various channels will be reviewed. The newly excluded values of the standard model Higgs mass will be presented. Information : http://dpnc.unige.ch/seminaire/annonce.html Organizer : J.-S. Graulich

  1. Geneva University

    CERN Multimedia

    2009-01-01

    École de physique - Département de physique nucléaire et corpusculaire 24, quai Ernest-Ansermet 1211 GENÈVE 4 Tél: (022) 379 62 73 - Fax: (022) 379 69 92 Lundi 6 avril 2009 PARTICLE PHYSICS SEMINAR àt 17:00 – Auditoire Stückelberg Hospital superbugs, nanomechanics and statistical physics Prof. Dr G. Aeppli / University College London The alarming growth of the antibiotic-resistant superbug, methicillin-resistant Staphylococcus aureus (MRSA) is driving the development of new technologies to investigate antibiotics and their modes of action. We report silicon cantilever based studies of self-assembled monolayers of mucopeptides which model drug-sensitive and resistant bacterial walls. The underlying concepts needed to understand the measurements will simplify the design of cantilevers and coatings for biosensing and could even impact our understanding of drug action on bacteria themselves. (Une verrée en compagnie du conférencier sera offerte après le colloque.) Organizer : Prof. Markus Büttiker ...

  2. Geneva University

    CERN Multimedia

    2008-01-01

    Ecole de physique - Département de physique nucléaire et corpusculaire 24, Quai Ernest-Ansermet 1211 GENEVE 4 Tél: (022) 379 62 73 Fax: (022) 379 69 92 Wednesday 29 October 2008 PARTICLE PHYSICS SEMINAR at 17.00 – Stückelberg Auditorium Precision measurements of low-energy neutrino-nucleus interactions with the SciBooNE experiment at Fermilab by Dr Michel Sorel, IFIC (CSIC and University of Valencia) «Do all modern accelerator-based neutrino experiments need to make use of kiloton-scale detectors and decade-long exposure times? In order to study the full pattern of neutrino mixing via neutrino oscillation experiments, the answer is probably yes, together with powerful proton sources. Still, to push the sensitivity of future neutrino oscillation searches into unchartered territory, those are necessary, but not sufficient, ingredients. In addition, accurate knowledge of neutrino interactions and neutrino production is mandatory. This knowledge can be acquired via small-scale and short-term dedicated n...

  3. Geneva University

    CERN Multimedia

    2010-01-01

    Ecole de physique Département de physique nucléaire et corspusculaire 24, quai Ernest-Ansermet 1211 GENEVE 4 Tel: (022) 379 62 73 Fax: (022) 379 69 92 Wednesday 14 April 2010 PARTICLE PHYSICS SEMINAR at 17.00 hrs – Stückelberg Auditorium Dark Matter and the XENON Experiment By Dr. Marc Schumann, Physik Institut, Universität Zürich There is convincing astrophysical and cosmological evidence that most of the matter in the Universe is dark: It is invisible in every band of the electromagnetic spectrum. Weakly interacting massive particles (WIMPs) are promising Dark Matter candidates that arise naturally in many theories beyond the Standard Model. Several experiments aim to directly detect WIMPs by measuring nuclear recoils from WIMPs scattered on target nuclei. In this talk, I will give an overview on Dark Matter and direct Dark Matter detection. Then I will focus on the XENON100 experiment, a 2-phase liquid/gas time projection chamber (TPC) that ...

  4. Geneva University

    CERN Multimedia

    2009-01-01

    École de physique - Département de physique nucléaire et corspusculaire 24, quai Ernest-Ansermet 1211 Genève 4 Tél. 022 379 62 73 - Fax: (022) 379 69 92 Wednesday 14 October 2009 PARTICLE PHYSICS SEMINAR at 17:00 – Stückelberg Auditorium Long-lived particle searches at colliders Dr. Philippe Mermod / Oxford University The discovery of exotic long-lived particles would address a number of important questions in modern physics such as the origin and composition of dark matter and the unification of the fundamental forces. This talk will focus on searches for long-lived charged massive particles, where "charged" refers to the magnetic, electric or colour charge. Previous searches at the LEP and Tevatron Colliders allowed to put mass and cross section limits on various kinds of long-lived particles, such as Magnetic Monopoles and metastable leptons and up-type quarks. The new energy regime made available at the LHC will probe physics regions well beyond these limits. F...

  5. Universal algebra

    CERN Document Server

    Grätzer, George

    1979-01-01

    Universal Algebra, heralded as ". . . the standard reference in a field notorious for the lack of standardization . . .," has become the most authoritative, consistently relied on text in a field with applications in other branches of algebra and other fields such as combinatorics, geometry, and computer science. Each chapter is followed by an extensive list of exercises and problems. The "state of the art" account also includes new appendices (with contributions from B. Jónsson, R. Quackenbush, W. Taylor, and G. Wenzel) and a well-selected additional bibliography of over 1250 papers and books which makes this a fine work for students, instructors, and researchers in the field. "This book will certainly be, in the years to come, the basic reference to the subject." --- The American Mathematical Monthly (First Edition) "In this reviewer's opinion [the author] has more than succeeded in his aim. The problems at the end of each chapter are well-chosen; there are more than 650 of them. The book is especially sui...

  6. Geneva University

    CERN Multimedia

    2009-01-01

    École de physique - Département de physique nucléaire et corpusculaire 24, quai Ernest-Ansermet 1211 GENÈVE 4Tél: (022) 379 62 73 - Fax: (022) 379 69 92 Wednesday 29 April 2009 PARTICLE PHYSICS SEMINAR at 17:00 - Stückelberg Auditorium Search for spin-1 excited bosons at the LHC Mihail V. Chizhov (Physics Department, Sofia University, Bulgaria) I will discuss the resonance production of new type spin-1 excited bosons, Z*, at hadron colliders. They can be observed as a Breit-Wigner resonance peak in the invariant dilepton mass distribution in the same way as the well-known hypothetical gauge bosons, Z�. This makes them very interesting objects for early searches with the LHC first data. Moreover, they have unique signatures in transverse momentum and angular distributions, which allow to distinguish them from other resonances. Information : http://dpnc.unige.ch/seminaire/annonce.html Organizer: J.-S. Graulich

  7. The Effect of The Locus of Control on Organizational Citizenship Behavior The Mediating Role Perceived Organizationel Support : Case Study of A University

    OpenAIRE

    Güçel, Cem; Tokmak, İsmail; Turgut, Hakan

    2012-01-01

    The aim of this study is to examine the effects of locus of control on organizational citizenship behaviors and the mediating effect of the perceived organizational support. For this aim, firstly, the locus of control, then organizational citizenship behaviors and, finally, the mediating effect of the perceived organizational support are explained. In the application part, a questionnaire including the measures of the locus of control, organizational support and organization...

  8. THE EFFECT OF THE LOCUS OF CONTROL ON ORGANIZATIONAL CITIZENSHIP BEHAVIOR THE MEDIATING EFFECT PERCEIVED ORGANIZATIONAL SUPPORT: CASE STUDY OF A UNIVERSITY

    OpenAIRE

    GUCEL, Cem; TOKMAK, Ismail; TURGUT, Hakan

    2012-01-01

    The aim of this study is to examine the effects of locus of control on organizational citizenship behaviors and the mediating effect of the perceived organizational support. For this aim, firstly, the locus of control, then organizational citizenship behaviors and, finally, the mediating effect of the perceived organizational support are explained. In the application part, a questionnaire including the measures of the locus of control, organizational support and organizational citizenship beh...

  9. Controlling methicillin-resistant Staphylococcus aureus by stepwise implementation of preventive strategies in a university hospital: impact of a link-nurse system on the basis of multidisciplinary approaches.

    Science.gov (United States)

    Miyachi, Hayato; Furuya, Hiroyuki; Umezawa, Kazuo; Itoh, Yumiko; Ohshima, Toshio; Miyamoto, Motoaki; Asai, Satomi

    2007-03-01

    Current approaches in the control of methicillin-resistant Staphylococcus aureus (MRSA) in the large tertiary referral hospital have not been universally successful. The trend of MRSA rates and their relationship with stepwise implementation of preventive strategies in Tokai University Hospital during a 76-month period from September 1998 to December 2004, was retrospectively analyzed with a quasi-experimental design. Implementation of strategies including a feedback process with case and epidemic reporting, an infection control team and office, and a preventive guideline for MRSA did not result in reduction in monthly MRSA rates in the hospital, as analyzed with Shewhart u charts. When infection control link nurses were organized and their activities became full-scale, there appeared significant reduction in arithmetic mean of the monthly rates of MRSA from 6.3% to 5.0% in June 2002. Meanwhile the mean values for monthly counts of new MRSA cases also dropped in 15 of 25 wards/units in June 2002, as analyzed with Exponentially Weighted Moving Average charts. Concurrently, there was a significant increase (17.3%) in the monthly consumption of handwashing liquid plain soap. Thereafter the MRSA rates remained low for 2 years within three standard deviations. The sustained reduction of MRSA rates in the hospital can be related to introduction of the infection control link-nurse system on the basis of continuous enforcement of basic and multidisciplinary approaches such as hand-hygiene compliance.

  10. A stationary reference frame current control for a multi-level H-bridge power converter for universal and flexible power management in future electricity network

    DEFF Research Database (Denmark)

    Ciobotaru, Mihai; Iov, Florin; Zanchetta, Pericle

    2008-01-01

    converters for grid connection of renewable sources will be needed. These power converters must be able to provide intelligent power management as well as ancillary services. This paper assesses a control method based on the stationary reference frame with Proportional-Resonant current controllers...

  11. Mechatronic control engineering and electro-mechanical system design - two mechatronic curricula at Aalborg University based on problem oriented and project based learning

    DEFF Research Database (Denmark)

    Pedersen, Henrik C.; Andersen, Torben Ole; Rasmussen, Peter Omand

    2009-01-01

    , it is addressed how a mechatronic education is structured so courses and projects are aligned, to utilize the full benefits of the Problem Oriented Project Based Learning (POPBL) system practiced at AalborgUniversity (AAU). This is followed by a presentation of the two complementary educations in Mechatronicsat...... using a subsystem based approach. The challenges related to teaching and learning mechatronics are addressed, discussing how mechatronics is typically taught around the world also illustrating the trends and applications of mechatronic engineering and research. This is followed by an outline...... Based Learning environment....

  12. University of Maryland MRSEC - Facilities: VTSTM

    Science.gov (United States)

    . University of Maryland Materials Research Science and Engineering Center Home About Us Leadership . Instrument Designation: VTSTM Omicron Nanotechnology UHV-VT-STM Nanonis SPM Controller Key Specifications

  13. Correlation between Spiritual Health and Health Locus of Control in Nursing and Midwifery Students of the Islamic Azad University of Urmia, Iran

    Directory of Open Access Journals (Sweden)

    Moradali Zareipour

    2017-06-01

    Full Text Available Background and Objectives: In today's world, the role of spirituality and its components in the prevention and treatment of public health and health issues is being taken into consideration. Given the importance of nursing and midwifery, this study was conducted to determine correlation between spiritual health and health locus of control in nursing and midwifery students. Methods: This descriptive-analytical study was conducted on 300 nursing and midwifery students in 2015. Spiritual health was measured by Paloutzian and Ellison's Spiritual Well-Being Scale and locus of control measured by Walston's Multidimensional Measure of Health Locus of Control. Data were analyzed by ANOVA and Pearson correlation coefficient in SPSS 16. Results: The students' mean score for spiritual health was 92.28±16.35 of total score 120. The mean score for religious and existential well-being was 48.54 and 43.74, respectively. There was a significant and positive correlation between spiritual health and internal health locus of control, and a significant and negative correlation between spiritual health and external health locus of control. Conclusion: Spiritual health was significantly correlated with health locus of control. Therefore, planners are recommended to take necessary measures to promote nursing and midwifery students' spiritual health so that their health loci of control can be improved.

  14. EURATOM-CEA association. Controlled fusion. Management committee nr 79. Activity report. National collaborations (Universities and CNRS). November 2007 - October 2005

    International Nuclear Information System (INIS)

    Garbet, X.; Benkadda, S.; Ottaviani, M.; Escande, D.; Blum, J.; Brenier, Y.; Lutjens, H.; Ghendrih, Ph.; Lima, R.; Bertrand, P.; Firpo, M.C.

    2005-12-01

    This publication presents several research projects on controlled fusion lead in collaboration by CNRS and academic teams. The general framework of these projects concerns theoretical developments in gyro-kinetics, transport and equilibrium to develop the required tools for the modelling of fusing plasmas. It comprises a study of characterisation and control of turbulent transport in tokamak plasmas, a study on the magnetic self-organisation of fusing plasmas, a gyro-kinetic modelling of tokamak plasmas, a study of identification and optimal control of plasma equilibrium in a tokamak, a gyrokinetic approach to the Vlasov equation, a study of the linear and non linear dynamics of instability modes in a tokamak plasma by using the model of extended magnetohydrodynamics, a study of the control of turbulence in magnetic fusion plasmas, and a study of the non linear regime of the n=1, m=1 mode

  15. Individual differences in components of impulsivity and effortful control moderate the relation between borderline personality disorder traits and emotion recognition in a sample of university students.

    Science.gov (United States)

    Preti, Emanuele; Richetin, Juliette; Suttora, Chiara; Pisani, Alberto

    2016-04-30

    Dysfunctions in social cognition characterize personality disorders. However, mixed results emerged from literature on emotion processing. Borderline Personality Disorder (BPD) traits are either associated with enhanced emotion recognition, impairments, or equal functioning compared to controls. These apparent contradictions might result from the complexity of emotion recognition tasks used and from individual differences in impulsivity and effortful control. We conducted a study in a sample of undergraduate students (n=80), assessing BPD traits, using an emotion recognition task that requires the processing of only visual information or both visual and acoustic information. We also measured individual differences in impulsivity and effortful control. Results demonstrated the moderating role of some components of impulsivity and effortful control on the capability of BPD traits in predicting anger and happiness recognition. We organized the discussion around the interaction between different components of regulatory functioning and task complexity for a better understanding of emotion recognition in BPD samples. Copyright © 2016 Elsevier Ireland Ltd. All rights reserved.

  16. The Relationship of Experiential Avoidance, Familial Emotional Atmosphere and Self-Control with Online Gaming Addiction in Bachelor Student of Shahid Chamran University of Ahvaz

    OpenAIRE

    Arash Zandipayam; Iran davoudi; Mahnaz Mehrabizadeh

    2016-01-01

    Background and Objectives: online game addiction is considered as a compulsive, excessive, uncontrollable and destructive physical and psychological behavior. With regard to the problem of persons with addiction to online gaming in the fields of experiential avoidance, families emotional atmosphere and self-control, this study was carried out with the aim of determining the relationship of experiential avoidance, families emotional atmosphere and self-control with online gaming addiction in t...

  17. The comparison of attentional control deficits in the three group of normal, with social anxiety disorder and with comorbidity (social anxiety disorder and depression) students of Lorestan University

    OpenAIRE

    Ghadampour E; Rezaei F; Hosseini Ramaghani NA; Moradi M

    2017-01-01

    Background and aims: One of the mechanisms that thought to underlie social anxiety disorder is dysfunction in attentional control. The current study was designed to compare attentional control deficits in the three group: normal, with social anxiety disorder and with comorbidity (social anxiety disorder and depression) students. Methods: The design of present study was causal-comparative. Statistical population of this study contained all normal female students, with social anxiety disorde...

  18. Stress management and mind-body medicine: a randomized controlled longitudinal evaluation of students' health and effects of a behavioral group intervention at a middle-size German university (SM-MESH).

    Science.gov (United States)

    Esch, Tobias; Sonntag, Ulrike; Esch, Sonja Maren; Thees, Stefanie

    2013-01-01

    Student life can be stressful. Hence, we started a regular mind-body medical stress management program in 2006. By today, more than 500 students took part and evaluations showed significant results, especially with regard to a reduction of stress warning signals. For further analysis, we now decided to run a randomized controlled longitudinal trial. Participating students at Coburg University were randomized into an intervention (n = 24) or a waitlist control group (n = 19). The intervention group completed 3 sets (pre/post/follow-up) and the control group 2 sets (pre/post) of self-administered questionnaires. The questionnaires included: SF-12 Health Survey, Perceived Stress Scale (PSS), Sense of Coherence (SOC-L9), Visual Analogue Scale (VAS) concerning stress, and the Stress Warning Signs (SWS) scale. Randomly selected participants of the intervention group were also queried in qualitative interviews. The intervention consisted of an 8 week stress management group program (mind-body medical stress reduction - MBMSR). Follow-up measures were taken after 6 months. Virtually, no drop-out occurred. Our study showed significant effects in the intervention group concerning SF-12 Mental Component Scale (p = 0.05), SF-12 Physical Component Scale (p = 0.001), VAS (in general, p = 0.001) and SWS (emotional reactions, p healthy students could be demonstrated. Findings suggest that stress management might be given importance at universities that care for the performance, the quality of life, and stress-health status of their students, acknowledging and accounting for the challenging circumstances of university life, as well as the specific needs of the modern student population. Copyright © 2013 S. Karger AG, Basel.

  19. Dever e prazer no casamento- empresa:transações regulares de controle do amor segundo a Igreja Universal

    Directory of Open Access Journals (Sweden)

    Bárbara Regina Altivo

    2016-08-01

    Full Text Available O trabalho sonda as principais linhas de sentido que animam a proposta da Igreja Universal do Reino de Deus (IURD sobre o amor no mundo contemporâneo através de suas materialidades discursivas. O artigo aborda os discursos iurdianos de teor pedagógico sobre amor, família e gênero. Como característica deste aparato, observamos a associação direta entre a busca imediata pela obtenção da felicidade, característica do hedonismo presente na Teologia da Prosperidade, e um ascetismo de ordem empresarial, que visa domesticar as impulsividades emocionais do homem e, principalmente, da mulher, nas dinâmicas intricadas do relacionamento amoroso. Assim, podemos entrever linhas de força que conflagram subjetividades marcadas por compromissos de gênero inscritos num modelo familiar de inspiração mercadológica.

  20. Enhancing the Emotional and Social Skills of the Youth to Promote their Wellbeing and Positive Development: A Systematic Review of Universal School-based Randomized Controlled Trials.

    Science.gov (United States)

    Sancassiani, Federica; Pintus, Elisa; Holte, Arne; Paulus, Peter; Moro, Maria Francesca; Cossu, Giulia; Angermeyer, Matthias C; Carta, Mauro Giovanni; Lindert, Jutta

    2015-01-01

    The acquisition of social and emotional skills is associated with positive youth development, character education, healthy lifestyle behaviours, reduction in depression and anxiety, conduct disorders, violence, bullying, conflict, and anger. School-based interventions aimed to enhance these skills go beyond a problem-focused approach to embrace a more positive view of health; they could also improve the youth's wellbeing. To describe the main features and to establish the effectiveness of universal school-based RCTs for children and the youth, aimed to promote their psychosocial wellbeing, positive development, healthy lifestyle behaviours and/or academic performance by improving their emotional and social skills. Systematic review by searching for relevant papers in PubMed/Medline with the following key words: "mental health" OR "wellbeing" OR "health promotion" OR "emotional learning" OR "social learning" OR "emotional and social learning" OR "positive youth development" OR "life skills" OR "life skills training" AND "school". Interval was set from January 2000 to April 2014. 1,984 papers were identified through the search. Out of them 22 RCTs were included. While most interventions were characterized by a whole-school approach and SAFE practices, few studies only used standardized measures to assess outcomes, or had collected follow-up data after ≥ 6 months. The results of all these trials were examined and discussed. Universal school-based RCTs to enhance emotional and social skills showed controversial findings, due to some methodological issues mainly. Nevertheless they show promising outcomes that are relatively far-reaching for children and youth wellbeing and therefore are important in the real world.

  1. Are you in Control? : That was the key question discussed at the second Dutch Second Dutch Process Control Security Event at the Technical University of Delft, December 4, 2008

    NARCIS (Netherlands)

    Luiijf, H.A.M.

    2009-01-01

    The second Dutch Process Control Security Event attracted many process control people. The event was organised by the National Infrastructure against Cybercrime (NICC). Over hundred people responsible for the security of process control systems (PCS) and related networks in many of the Dutch

  2. Digital techniques in simulation, communication and control. Proceedings of the IMACS European meeting held at University of Patras, Patras, Greece, July 9-12, 1984

    Energy Technology Data Exchange (ETDEWEB)

    Tzafestas, S G

    1985-01-01

    The book contains 90 papers which are classified in the following five parts: Modelling and simulation; Digital signal processing and 2-D system design; Information and communication systems; Control systems; and Applications (robotics, industrial and miscellaneous applications). The volume reflects the state-of-art of the field of digital techniques. (Auth.).

  3. The Quality Assurance_Quality Control of the Monitored Drift Tubes at the HEP Laboratory of the National Technical University of Athens

    CERN Document Server

    Alexopoulos, T; Dris, M; Filippas, A V; Fokitis, E; Gazis, E N; Katsoufis, E C; Maltezos, A; Maltezos, S; Papadopoulos, E; Papadopoulou, T D; Savva, Panagiota S; Stavropoulos, G D; Tsipolitis, G; Tzamariudaki, E

    2001-01-01

    The description of the Quality Assurance and Quality Control (QA_QC) procedures for the Monitored Drift Tubes (MDT's) followed at the HEP Laboratory of NTUA are presented and results of the tested tubes are given. The MDT's are the elements from which muon chambers for the ATLAS/LHC Muon Spectrometer are built..

  4. Disease management in the treatment of patients with chronic heart failure who have universal access to health care: a randomized controlled trial.

    Science.gov (United States)

    Kalter-Leibovici, Ofra; Freimark, Dov; Freedman, Laurence S; Kaufman, Galit; Ziv, Arnona; Murad, Havi; Benderly, Michal; Silverman, Barbara G; Friedman, Nurit; Cukierman-Yaffe, Tali; Asher, Elad; Grupper, Avishay; Goldman, Dorit; Amitai, Miriam; Matetzky, Shlomi; Shani, Mordechai; Silber, Haim

    2017-05-01

    The efficacy of disease management programs in improving the outcome of heart failure patients remains uncertain and may vary across health systems. This study explores whether a countrywide disease management program is superior to usual care in reducing adverse health outcomes and improving well-being among community-dwelling adult patients with moderate-to-severe chronic heart failure who have universal access to advanced health-care services and technologies. In this multicenter open-label trial, 1,360 patients recruited after hospitalization for heart failure exacerbation (38%) or from the community (62%) were randomly assigned to either disease management or usual care. Disease management, delivered by multi-disciplinary teams, included coordination of care, patient education, monitoring disease symptoms and patient adherence to medication regimen, titration of drug therapy, and home tele-monitoring of body weight, blood pressure and heart rate. Patients assigned to usual care were treated by primary care practitioners and consultant cardiologists. The primary composite endpoint was the time elapsed till first hospital admission for heart failure exacerbation or death from any cause. Secondary endpoints included the number of all hospital admissions, health-related quality of life and depression during follow-up. Intention-to-treat comparisons between treatments were adjusted for baseline patient data and study center. During the follow-up, 388 (56.9%) patients assigned to disease management and 387 (57.1%) assigned to usual care had a primary endpoint event. The median (range) time elapsed until the primary endpoint event or end of study was 2.0 (0-5.0) years among patients assigned to disease management, and 1.8 (0-5.0) years among patients assigned to usual care (adjusted hazard ratio, 0.908; 95% confidence interval, 0.788 to 1.047). Hospital admissions were mostly (70%) unrelated to heart failure. Patients assigned to disease management had a better

  5. Application Research on Variable Universe FuzzyController in PV MPPT System%变论域模糊控制器在光伏系统MPPT中的应用研究

    Institute of Scientific and Technical Information of China (English)

    王苏洲; 舒志兵; 李照

    2017-01-01

    In order to solve the problem of the nonlinear characteristics of photovoltaic power generation system and the steady state error of the general fuzzy control,the variable universe fuzzy control was applied to the photovoltaic MPPT system and the selection of the expansion factor of variable universe fuzzy control and the design of the controller were introduced,MATLAB/Simulink was used to establish the MPPT system simulation model based on BOOST conversion circuit.Adjusting the duty ratio of the Boost circuit switch tube,the method was made to work at maximum power point of photovoltaic cells.The work had been carried on with simulation.Finally simulation was used to prove the efficiency of this method.The simulation results showed that the variable universe fuzzy control can improve the stability of MPPT,reduce the static error and fluctuation,improve the utilization rate of solar energy.%为了解决光伏发电系统非线性特点及一般模糊控制存在稳态误差的问题,将变论域模糊控制应用到光伏发电系统的MPPT(Maximum Power Point Tracking)中,介绍了变论域模糊控制伸缩因子的选取及控制器的设计,运用MATLAB/Simulink建立基于BOOST转换电路的MPPT系统仿真模型.通过调节Boost电路开关管的占空比使光伏电池工作在最大功率点,并对该方法进行了仿真验证.仿真结果表明,变论域模糊控制能够改善光伏发电系统MPPT的稳定性,减小稳态误差与波动,提高太阳能的利用率.

  6. [Universal electrogustometer EG-2].

    Science.gov (United States)

    Wałkanis, Andrzej; Czesak, Michał; Pleskacz, Witold A

    2011-01-01

    Electrogustometry is a method for taste diagnosis and measurement. The EG-2 project is being developed in cooperation between Warsaw University of Technology and Military institute of Medicine in Warsaw. The device is an evolution of the recent universal electrogustometer EG-1 prototype. Due to considerations and experiences acquired during prototype usage, many enhancements have been incorporated into device. The aim was to create an easy-to-use, portable, battery powered device, enabled for fast measurements. Developed electrogustometer is using innovative, low-power microprocessor system, which control whole device. User interface is based on 5.7" graphical LCD (Liquid Crystal Display) and touchscreen. It can be directly operated by finger or with optional stylus. Dedicated GUI (Graphical User Interface) offers simple, predefined measurements and advance settings of signal parameters. It is also possible to store measurements results and patients data in an internal memory. User interface is multilanguage. Signals for patients examinations, supplied with bipolar electrode, are generated by an on-board circuit using DDS (Direct-Digital Synthesis) and DAC (Digital-to-Analog Converter). Electrogustometer is able to generate DC, sinus, triangle or rectangle signals with current amplitude from 0 to 500 pA and frequency form 0 to 500 Hz. Device is designed for manual and automeasurement modes. By using USB (Universal Serial Bus) port it is possible to retrieve data stored in internal memory and charging of built-in Li-lon battery as a source of power.

  7. Study on Spatial Spillover Effects of Logistics Industry Development for Economic Growth in the Yangtze River Delta City Cluster Based on Spatial Durbin Model.

    Science.gov (United States)

    Xu, Xinxing; Wang, Yuhong

    2017-12-04

    The overall entropy method is used to evaluate the development level of the logistics industry in the city based on a mechanism analysis of the spillover effect of the development of the logistics industry on economic growth, according to the panel data of 26 cities in the Yangtze River delta. On this basis, the paper uses the spatial durbin model to study the direct impact of the development of the logistics industry on economic growth and the spatial spillover effect. The results show that the direct impact coefficient of the development of the logistics industry in the Yangtze River Delta urban agglomeration on local economic growth is 0.092, and the significant spatial spillover effect on the economic growth in the surrounding area is 0.197. Compared with the labor force input, capital investment and the degree of opening to the world, and government functions, the logistics industry's direct impact coefficient is the largest, other than capital investment; the coefficient of the spillover effect is higher than other control variables, making it a "strong engine" of the Yangtze River Delta urban agglomeration economic growth.

  8. Photo-induced transformation process at gold clusters-semiconductor interface: Implications for the complexity of gold clusters-based photocatalysis

    Science.gov (United States)

    Liu, Siqi; Xu, Yi-Jun

    2016-03-01

    The recent thrust in utilizing atomically precise organic ligands protected gold clusters (Au clusters) as photosensitizer coupled with semiconductors for nano-catalysts has led to the claims of improved efficiency in photocatalysis. Nonetheless, the influence of photo-stability of organic ligands protected-Au clusters at the Au/semiconductor interface on the photocatalytic properties remains rather elusive. Taking Au clusters-TiO2 composites as a prototype, we for the first time demonstrate the photo-induced transformation of small molecular-like Au clusters to larger metallic Au nanoparticles under different illumination conditions, which leads to the diverse photocatalytic reaction mechanism. This transformation process undergoes a diffusion/aggregation mechanism accompanied with the onslaught of Au clusters by active oxygen species and holes resulting from photo-excited TiO2 and Au clusters. However, such Au clusters aggregation can be efficiently inhibited by tuning reaction conditions. This work would trigger rational structural design and fine condition control of organic ligands protected-metal clusters-semiconductor composites for diverse photocatalytic applications with long-term photo-stability.

  9. Support vector machine and fuzzy C-mean clustering-based comparative evaluation of changes in motor cortex electroencephalogram under chronic alcoholism.

    Science.gov (United States)

    Kumar, Surendra; Ghosh, Subhojit; Tetarway, Suhash; Sinha, Rakesh Kumar

    2015-07-01

    In this study, the magnitude and spatial distribution of frequency spectrum in the resting electroencephalogram (EEG) were examined to address the problem of detecting alcoholism in the cerebral motor cortex. The EEG signals were recorded from chronic alcoholic conditions (n = 20) and the control group (n = 20). Data were taken from motor cortex region and divided into five sub-bands (delta, theta, alpha, beta-1 and beta-2). Three methodologies were adopted for feature extraction: (1) absolute power, (2) relative power and (3) peak power frequency. The dimension of the extracted features is reduced by linear discrimination analysis and classified by support vector machine (SVM) and fuzzy C-mean clustering. The maximum classification accuracy (88 %) with SVM clustering was achieved with the EEG spectral features with absolute power frequency on F4 channel. Among the bands, relatively higher classification accuracy was found over theta band and beta-2 band in most of the channels when computed with the EEG features of relative power. Electrodes wise CZ, C3 and P4 were having more alteration. Considering the good classification accuracy obtained by SVM with relative band power features in most of the EEG channels of motor cortex, it can be suggested that the noninvasive automated online diagnostic system for the chronic alcoholic condition can be developed with the help of EEG signals.

  10. [A case-control study of factors associated with repeat teen pregnancy based on a sample from a university maternity hospital].

    Science.gov (United States)

    Silva, Andréa de Albuquerque Arruda; Coutinho, Isabela C; Katz, Leila; Souza, Alex Sandro Rolland

    2013-03-01

    Repeat teen pregnancy is a frequent issue and is considered an aggravating factor for increased maternal and fetal morbidity and social problems. The aim of the study was to identify factors associated with repeat teen pregnancy. A case-control study was conducted in 90 postpartum adolescents with more than one pregnancy (cases) and 90 adult women with a history of only one pregnancy during adolescence (controls). Statistical analysis used hierarchical logistic regression with 5% significance. Early sexual initiation (pregnancy (pregnancy, while partner change was inversely associated. Repeat teen pregnancy was mainly associated with reproductive and socioeconomic factors. Partner change appeared as a protective factor. Measures should be adopted during the postpartum period of teenage mothers in order to avoid repeat pregnancy.

  11. Exploring the effects of a universal classroom management training programme on teacher and child behaviour: A group randomised controlled trial and cost analysis

    OpenAIRE

    O'Neill, Donal

    2017-01-01

    Teachers frequently struggle to cope with conduct problems in the classroom. The aim of this study was to assess the effectiveness of the Incredible Years Teacher Classroom Management Training Programme for improving teacher competencies and child adjustment. The study involved a group randomised controlled trial which included 22 teachers and 217 children (102 boys and 115 girls). The average age of children included in the study was 5.3 years (standard deviation = 0.89). Teacher...

  12. The Milling Assistant, Case-Based Reasoning, and machining strategy: A report on the development of automated numerical control programming systems at New Mexico State University

    Energy Technology Data Exchange (ETDEWEB)

    Burd, W. [Sandia National Labs., Albuquerque, NM (United States); Culler, D.; Eskridge, T.; Cox, L.; Slater, T. [New Mexico State Univ., Las Cruces, NM (United States)

    1993-08-01

    The Milling Assistant (MA) programming system demonstrates the automated development of tool paths for Numerical Control (NC) machine tools. By integrating a Case-Based Reasoning decision processor with a commercial CAD/CAM software, intelligent tool path files for milled and point-to-point features can be created. The operational system is capable of reducing the time required to program a variety of parts and improving product quality by collecting and utilizing ``best of practice`` machining strategies.

  13. The Learning University.

    Science.gov (United States)

    Patterson, Glenys

    1999-01-01

    As universities make cross-sectoral alliances, various models for integrating postsecondary education into universities arise: contract, brokerage, collaborative, validation, joint program, dual-sector institution, tertiary university, metaphoric, and federal. The integrated, comprehensive university is the learning university of the 21st century.…

  14. The Feasibility, Acceptability, and Efficacy of Delivering Internet-Based Self-Help and Guided Self-Help Interventions for Generalized Anxiety Disorder to Indian University Students: Design of a Randomized Controlled Trial.

    Science.gov (United States)

    Kanuri, Nitya; Newman, Michelle G; Ruzek, Josef I; Kuhn, Eric; Manjula, M; Jones, Megan; Thomas, Neil; Abbott, Jo-Anne M; Sharma, Smita; Taylor, C Barr

    2015-12-11

    Generalized anxiety disorder (GAD) is one of the most common mental disorders among university students; however, many students go untreated due to treatment costs, stigma concerns, and limited access to trained mental health professionals. These barriers are heightened in universities in India, where there are scant mental health care services and severe stigma surrounding help seeking. To evaluate the feasibility, acceptability, and efficacy of Internet-based, or "online," cognitive behavioral therapy (CBT)-based unguided and guided self-help interventions (using the programs GAD Online and Lantern, respectively) to reduce GAD symptoms in students with clinical and subthreshold GAD and, ultimately, reduce the prevalence and incidence of GAD among the student population. Students will be recruited via 3 colleges in Hyderabad, India, and referred for a campus-wide online screening. Self-report data will be collected entirely online. A total of 300 qualifying students will be randomized in a 1:1:1 ratio to receive GAD Online, Lantern, or to be in a wait-list control condition, stratified by clinical and subthreshold GAD symptomatology. Students will complete a postintervention assessment after 3 months and a follow-up assessment 6 months later, at which point students in the wait-list control condition will receive one of the programs. The primary outcome is GAD symptom severity at 3 months postintervention. Secondary outcomes include GAD caseness at 9 months, other anxiety and depression symptoms, self-efficacy, and functional measures (eg, sleep, social functioning) at 3 and 9 months, respectively. Primary analyses will be differences between each of the intervention groups and the wait-list control group, analyzed on an intention-to-treat (ITT) basis using mixed-design ANOVA. The study commenced in February 2015. The sample was recruited over a 3-week period at each college. The trial is expected to end in December 2015. This trial will be the first to evaluate

  15. The Feasibility, Acceptability, and Efficacy of Delivering Internet-Based Self-Help and Guided Self-Help Interventions for Generalized Anxiety Disorder to Indian University Students: Design of a Randomized Controlled Trial

    Science.gov (United States)

    Newman, Michelle G; Ruzek, Josef I; Kuhn, Eric; Manjula, M; Jones, Megan; Thomas, Neil; Abbott, Jo-Anne M; Sharma, Smita; Taylor, C. Barr

    2015-01-01

    Background Generalized anxiety disorder (GAD) is one of the most common mental disorders among university students; however, many students go untreated due to treatment costs, stigma concerns, and limited access to trained mental health professionals. These barriers are heightened in universities in India, where there are scant mental health care services and severe stigma surrounding help seeking. Objective To evaluate the feasibility, acceptability, and efficacy of Internet-based, or “online,” cognitive behavioral therapy (CBT)-based unguided and guided self-help interventions (using the programs GAD Online and Lantern, respectively) to reduce GAD symptoms in students with clinical and subthreshold GAD and, ultimately, reduce the prevalence and incidence of GAD among the student population. Methods Students will be recruited via 3 colleges in Hyderabad, India, and referred for a campus-wide online screening. Self-report data will be collected entirely online. A total of 300 qualifying students will be randomized in a 1:1:1 ratio to receive GAD Online, Lantern, or to be in a wait-list control condition, stratified by clinical and subthreshold GAD symptomatology. Students will complete a postintervention assessment after 3 months and a follow-up assessment 6 months later, at which point students in the wait-list control condition will receive one of the programs. The primary outcome is GAD symptom severity at 3 months postintervention. Secondary outcomes include GAD caseness at 9 months, other anxiety and depression symptoms, self-efficacy, and functional measures (eg, sleep, social functioning) at 3 and 9 months, respectively. Primary analyses will be differences between each of the intervention groups and the wait-list control group, analyzed on an intention-to-treat (ITT) basis using mixed-design ANOVA. Results The study commenced in February 2015. The sample was recruited over a 3-week period at each college. The trial is expected to end in December 2015

  16. Hazard analysis and critical control points (HACCP program implementation possibility during the preparation of lettuce salad served at State University of Londrina university restaurant/ Possibilidade de implementação de um programa de análise de perigo e pontos críticos de controle (APPCC na preparação de salada de alface no restaurante universitário da Universidade Estadual de Londrina

    Directory of Open Access Journals (Sweden)

    Massami Shimokomaki

    2001-05-01

    Full Text Available The possibility of Hazard Analysis and Critical Control Points – HACCP- system implementation was evaluated at University Restaurant (UR of State University of Londrina (UEL. A study was designed to assure the safety of vegetables served as raw salad. Lettuce salad was taken as example. After checking the Good Manufacturing Practice it was verified further that UR presented the necessary conditions to allow the HACCP system implementation for this product. The chemical, physical and biological hazards were checked throughout lettuce salad preparation and the critical control points were identified at raw material (CCP chemical, washing (physical CCP and disinfecting step (biological CCP. Preventive and monitoring measures were also established in order to assure a safe lettuce salad provided by the UEL-UR.Foi desenvolvida uma avaliação sobre a possibilidade de implementar um programa de um sistema de Análise de Perigo e Pontos Críticos de Controle – APPCC, visando assegurar a inocuidade de hortaliças servidas como salada crua no Restaurante Universitário (RU da Universidade Estadual de Londrina, tomando-se como exemplo, a salada de alface. Avaliados os procedimentos das Boas Práticas de Fabricação, foi verificado que o RU apresentou boa parte dos requisitos necessários para que seja implantado o sistema APPCC. Foram listados os perigos químicos, físicos e biológicos para cada etapa da produção de salada de alface. Como pontos críticos de controle foram identificadas as etapas de recebimento (PCC químico, lavagem (PCC físico e desinfecção (PCC biológico e estabelecidas as medidas preventivas e de monitoramento.

  17. Costs and risk factors for ventilator-associated pneumonia in a Turkish University Hospital's Intensive Care Unit: A case-control study

    Directory of Open Access Journals (Sweden)

    Serin Simay

    2004-04-01

    Full Text Available Abstract Background Ventilator-associated pneumonia (VAP which is an important part of all nosocomial infections in intensive care unit (ICU is a serious illness with substantial morbidity and mortality, and increases costs of hospital care. We aimed to evaluate costs and risk factors for VAP in adult ICU. Methods This is a-three year retrospective case-control study. The data were collected between 01 January 2000 and 31 December 2002. During the study period, 132 patients were diagnosed as nosocomial pneumonia of 731 adult medical-surgical ICU patients. Of these only 37 VAP patients were assessed, and multiple nosocomially infected patients were excluded from the study. Sixty non-infected ICU patients were chosen as control patients. Results Median length of stay in ICU in patients with VAP and without were 8.0 (IQR: 6.5 and 2.5 (IQR: 2.0 days respectively (P Conclusion Respiratory failure, coma, depressed consciousness, enteral feeding and length of stay are independent risk factors for developing VAP. The cost of VAP is approximately five-fold higher than non-infected patients.

  18. Modeling and simulation of the feedwater system, associated controller and interface with the user for the SUN-RAH nucleo electric plants university student simulator

    International Nuclear Information System (INIS)

    Sanchez B, A.

    2003-01-01

    The simulation process of the component systems of the feedwater of a nucleo electric plant is presented, using several models of reduced order that represent the diverse elements that compose the systems like: the heaters of feedwater, the condenser, the feedwater pump, etc. The integration of the same ones in one simulative structure, and the development of a platform that to give the appearance of to be executed in continuous time, it is the objective of the feedwater simulator, as well as of the SUN-RAH simulator, of which is part. The simulator uses models of reduced order that respond to the observed behavior of a nuclear plant of BWR type. Likewise, it is presented a model of a flow controller of feedwater that will be the one in charge of regulating the demand of the system according to the characteristics and criticize restrictions of safety and controllability, assigned according to those wanted parameters of performance of this system inside the nucleo electric plant. The integration of these models, the adaptation of the variables and parameters, are presented in a way that the integration with the other ones models of the remaining systems of the plant (reactor, steam lines, turbine, etc.), be direct and coherent with the principles of thermodynamic cycles relative to this type of generation plants. The design of those graphic interfaces and the environment where the simulator works its are part of those developments of this work. The reaches and objectives of the simulator complement the description of the simulator. (Author)

  19. Evaluation of ergonomic and education interventions to reduce occupational sitting in office-based university workers: study protocol for a randomized controlled trial.

    Science.gov (United States)

    Radas, Antonia; Mackey, Martin; Leaver, Andrew; Bouvier, Anna-Louise; Chau, Josephine Y; Shirley, Debra; Bauman, Adrian

    2013-10-12

    Prolonged sitting is a specific occupational hazard in office workers. There is growing evidence that prolonged sitting is detrimental to metabolic health. The aim of this study is to determine whether providing office workers with education along with adjustable sit-stand workstations leads to reduction in sitting behavior. A randomized control trial (RCT) with three groups (one control group and two intervention groups) will be conducted in an office workplace setting. The education intervention group will receive an education package that encourages reduction in sitting behaviors. The sit-stand desk intervention group will receive the same education package along with an adjustable sit-stand desk. Participants will be included in the study if they are currently employed in a full-time academic or administrative role that involves greater than 15 hours per week or greater than 4 hours per day computer-based work. Baseline data will include participant's age, gender, weight, height, smoking habit, employment position, level of education, and baseline self-reported leisure time physical activity. The primary outcome is the average daily sedentary time during work hours, measured by an accelerometer. Participant recruitment commenced in March 2013 and will be completed by December 2013. This study will determine whether providing office workers with an adjustable sit-stand desk and individually targeted education, or education alone, is more effective in decreasing sitting behaviors than no intervention. Australian New Zealand Clinical Trials Registry: ACTRN12613000366752.

  20. Locus of control and contraceptive knowledge, attitude and practice among university students Locus de control y conocimiento, actitud y práctica contraceptivas entre adolescentes universitarios Lócus de controle e conhecimento, atitude e prática contraceptivas entre adolescentes universitários

    Directory of Open Access Journals (Sweden)

    Aline Salheb Alves

    2010-02-01

    Full Text Available OBJECTIVE: To assess the relationship between locus of control and knowledge, attitude and practice regarding pill and condom use among university students. METHODS: The inquiry was developed in Campinas, a city in Southeastern Brazil, in 2006. A total of 295 adolescent newcomers to a public university answered a structured questionnaire and Levenson's multidimensional locus of control scale. The scores of the dimensions of locus of control were calculated and Spearman's correlation coefficient was used to assess their correlation with knowledge and practice concerning pill and condom use. In order to assess the relationship between the dimensions of locus of control and sociodemographic variables and variables related to the individuals' sex life, Kruskal-Wallis and Mann-Whitney tests were used. RESULTS: Male adolescents had higher scores of powerful others externality when compared to female adolescents (p=0.01. Students living alone had lower internality (p=0.01. When locus of control was compared to condom use in the first intercourse, considering only the 102 students who informed the age of the beginning of sexual activity, greater internality was found among male adolescents who did not use condoms (pOBJETIVO: Evaluar la relación del locus de control con conocimiento, actitud y práctica relacionados a la píldora y al preservativo entre adolescentes estudiantes universitarios. MÉTODOS: Estudio tipo pesquisa desarrollado en Campinas, Sureste de Brasil, en 2006. El total de 295 adolescentes ingresados de una universidad pública respondió a un cuestionario estructurado y a la escala multidimensional de locus de control de Levenson. Fueron calculados los escores de las dimensiones del locus de control y el coeficiente de correlación de Spearman para evaluar la correlación con el conocimiento y la práctica del uso de píldora y preservativo. Para evaluar la relación entre las dimensiones del locus de control y las variables

  1. Final report of “A Detailed Study of the Physical Mechanisms Controlling CO2-Brine Capillary Trapping in the Subsurface” (University of Arizona, DE-SC0006696)

    Energy Technology Data Exchange (ETDEWEB)

    Schaap, Marcel G. [Univ. of Arizona, Tucson, AZ (United States)

    2016-07-25

    Carbon capture and storage (CCS) of carbon dioxide emissions generated by production or combustion of fossil fuels is a technologically viable means to reduce the build-up of CO2 in the atmosphere and oceans. Using advantages of scale and location, CCS is particularly suitable for large point sources near ubiquitous deep saline aquifers, depleted gas reservoirs, or at production reservoirs for enhanced oil recovery (EOR). In the BES-funded research project, Oregon State University (OSU) carried out capillary trapping experiments with proxy fluids that mimic the properties of the scCO2/brine system under ambient temperatures and pressures, and successfully developed a unique and novel x-ray compatible, high-pressure, elevated temperature setup to study the scCO2/brine system under challenging reservoir conditions. Both methodologies were applied to a variety of porous media, including synthetic (glass bead) and geologic (Bentheimer sandstone) materials. The University of Arizona (UA) developed pore-scale lattice Boltzmann (LB) models which are able to handle the experimental conditions for proxy fluids, as well as the scCO2/brine system, that are capable of simulating permeability in volumes of tens of millions of fluid elements. We reached the following summary findings (main institute indicated): 1. (OSU/UA) To understand capillary trapping in a multiphase fluid-porous medium system, the system must be analyzed from a pore-scale force balance perspective; trapping can be enhanced by manipulating wetting and nonwetting phase fluid properties. 2. (OSU) Pore-scale fluid connectivity and topology has a clear and direct effect on nonwetting phase capillary trapping efficiency. 3. (OSU) Rock type and flow regime also have a pronounced effects on capillary trapping. 4. (OSU/UA) There is a predictable relationship between NWP connectivity and NWP saturation, which allows for development of injection strategies that optimize trapping. The commonly used Land model (Land

  2. Baby Business: a randomised controlled trial of a universal parenting program that aims to prevent early infant sleep and cry problems and associated parental depression

    Directory of Open Access Journals (Sweden)

    Cook Fallon

    2012-02-01

    Full Text Available Abstract Background Infant crying and sleep problems (e.g. frequent night waking, difficulties settling to sleep each affect up to 30% of infants and often co-exist. They are costly to manage and associated with adverse outcomes including postnatal depression symptoms, early weaning from breast milk, and later child behaviour problems. Preventing such problems could improve these adverse outcomes and reduce costs to families and the health care system. Anticipatory guidance-i.e. providing parents with information about normal infant sleep and cry patterns, ways to encourage self-settling in infants, and ways to develop feeding and settling routines before the onset of problems-could prevent such problems. This paper outlines the protocol for our study which aims to test an anticipatory guidance approach. Methods/Design 750 families from four Local Government Areas in Melbourne, Australia have been randomised to receive the Baby Business program (intervention group or usual care (control group offered by health services. The Baby Business program provides parents with information about infant sleep and crying via a DVD and booklet (mailed soon after birth, telephone consultation (at infant age 6-8 weeks and parent group session (at infant age 12 weeks. All English speaking parents of healthy newborn infants born at > 32 weeks gestation and referred by their maternal and child health nurse at their first post partum home visit (day 7-10 postpartum, are eligible. The primary outcome is parent report of infant night time sleep as a problem at four months of age and secondary outcomes include parent report of infant daytime sleep or crying as a problem, mean duration of infant sleep and crying/24 hours, parental depression symptoms, parent sleep quality and quantity and health service use. Data will be collected at two weeks (baseline, four months and six months of age. An economic evaluation using a cost-consequences approach will, from a societal

  3. International Nosocomial Infection Control Consortium Findings of Device-Associated Infections Rate in an Intensive Care Unit of a Lebanese University Hospital

    Science.gov (United States)

    Kanj, SS; Kanafani, ZA; Sidani, N; Alamuddin, L; Zahreddine, N; Rosenthal, VD

    2012-01-01

    Objectives: To determine the rates of device-associated healthcare-associated infections (DA-HAI), microbiological profile, bacterial resistance, length of stay (LOS), excess mortality and hand hygiene compliance in one intensive care unit (ICU) of a hospital member of the International Infection Control Consortium (INICC) in Beirut, Lebanon. Materials and Methods: An open label, prospective cohort, active DA-HAI surveillance study was conducted on adults admitted to a tertiary-care ICU in Lebanon from November 2007 to March 2010. The protocol and methodology implemented were developed by INICC. Data collection was performed in the participating ICUs. Data uploading and analyses were conducted at INICC headquarters on proprietary software. DA-HAI rates were recorded by applying the definitions of the National Healthcare Safety Network (NHSN) at the US Centers for Disease Control and Prevention (CDC). We analyzed the DA-HAI, mechanical ventilator-associated pneumonia (VAP), central line-associated bloodstream infection (CLA-BSI), and catheter-associated urinary tract infection (CAUTI) rates, microorganism profile, excess LOS, excess mortality, and hand hygiene compliance. Results: A total of 666 patients hospitalized for 5,506 days acquired 65 DA-HAIs, an overall rate of 9.8% [(95% confidence interval (CI) 7.6–12.3], and 11.8 (95% CI 9.1–15.0) DA-HAIs per 1000 ICU-days. The CLA-BSI rate was 5.2 (95% CI 2.8–8.7) per 1000 catheter-days; the VAP rate was 8.1 (95% CI 5.5–11.7) per 1000 ventilator-days; and the CAUTI rate was 4.1 (95% CI 2.6–6.2) per 1000 catheter-days. LOS of patients was 7.3 days for those without DA-HAI, 13.8 days for those with CLA-BSI, 18.8 days for those with VAP. Excess mortality was 40.9% [relative risk (RR) 3.14; P 0.004] for CLA-BSI. Mortality of VAP and CAUTI was not significantly different from patients without DA-HAI. Escherichia coli was the most common isolated microorganism. Overall hand hygiene compliance was 84.9% (95% CI 82

  4. International nosocomial infection control consortium findings of device-associated infections rate in an intensive care unit of a Lebanese university hospital

    Directory of Open Access Journals (Sweden)

    S S Kanj

    2012-01-01

    Full Text Available Objectives: To determine the rates of device-associated healthcare-associated infections (DA-HAI, microbiological profile, bacterial resistance, length of stay (LOS, excess mortality and hand hygiene compliance in one intensive care unit (ICU of a hospital member of the International Infection Control Consortium (INICC in Beirut, Lebanon. Materials and Methods: An open label, prospective cohort, active DA-HAI surveillance study was conducted on adults admitted to a tertiary-care ICU in Lebanon from November 2007 to March 2010. The protocol and methodology implemented were developed by INICC. Data collection was performed in the participating ICUs. Data uploading and analyses were conducted at INICC headquarters on proprietary software. DA-HAI rates were recorded by applying the definitions of the National Healthcare Safety Network (NHSN at the US Centers for Disease Control and Prevention (CDC. We analyzed the DA-HAI, mechanical ventilator-associated pneumonia (VAP, central line-associated bloodstream infection (CLA-BSI, and catheter-associated urinary tract infection (CAUTI rates, microorganism profile, excess LOS, excess mortality, and hand hygiene compliance. Results: A total of 666 patients hospitalized for 5,506 days acquired 65 DA-HAIs, an overall rate of 9.8% [(95% confidence interval (CI 7.6-12.3], and 11.8 (95% CI 9.1-15.0 DA-HAIs per 1000 ICU-days. The CLA-BSI rate was 5.2 (95% CI 2.8-8.7 per 1000 catheter-days; the VAP rate was 8.1 (95% CI 5.5-11.7 per 1000 ventilator-days; and the CAUTI rate was 4.1 (95% CI 2.6-6.2 per 1000 catheter-days. LOS of patients was 7.3 days for those without DA-HAI, 13.8 days for those with CLA-BSI, 18.8 days for those with VAP. Excess mortality was 40.9% [relative risk (RR 3.14; P 0.004] for CLA-BSI. Mortality of VAP and CAUTI was not significantly different from patients without DA-HAI. Escherichia coli was the most common isolated microorganism. Overall hand hygiene compliance was 84.9% (95% CI 82

  5. Baby Business: a randomised controlled trial of a universal parenting program that aims to prevent early infant sleep and cry problems and associated parental depression.

    Science.gov (United States)

    Cook, Fallon; Bayer, Jordana; Le, Ha N D; Mensah, Fiona; Cann, Warren; Hiscock, Harriet

    2012-02-06

    Infant crying and sleep problems (e.g. frequent night waking, difficulties settling to sleep) each affect up to 30% of infants and often co-exist. They are costly to manage and associated with adverse outcomes including postnatal depression symptoms, early weaning from breast milk, and later child behaviour problems. Preventing such problems could improve these adverse outcomes and reduce costs to families and the health care system. Anticipatory guidance-i.e. providing parents with information about normal infant sleep and cry patterns, ways to encourage self-settling in infants, and ways to develop feeding and settling routines before the onset of problems-could prevent such problems. This paper outlines the protocol for our study which aims to test an anticipatory guidance approach. 750 families from four Local Government Areas in Melbourne, Australia have been randomised to receive the Baby Business program (intervention group) or usual care (control group) offered by health services. The Baby Business program provides parents with information about infant sleep and crying via a DVD and booklet (mailed soon after birth), telephone consultation (at infant age 6-8 weeks) and parent group session (at infant age 12 weeks). All English speaking parents of healthy newborn infants born at > 32 weeks gestation and referred by their maternal and child health nurse at their first post partum home visit (day 7-10 postpartum), are eligible. The primary outcome is parent report of infant night time sleep as a problem at four months of age and secondary outcomes include parent report of infant daytime sleep or crying as a problem, mean duration of infant sleep and crying/24 hours, parental depression symptoms, parent sleep quality and quantity and health service use. Data will be collected at two weeks (baseline), four months and six months of age. An economic evaluation using a cost-consequences approach will, from a societal perspective, compare costs and health outcomes

  6. Control of Passion Fruit Fungal Diseases Using Essential Oils Extracted from Rosemary (Rosmarinus officinalis) and Eucalyptus (Eucalyptus agglomerata) in Egerton University Main Campus Njoro, Kenya.

    Science.gov (United States)

    Waithaka, Paul Njenga; Gathuru, Eliud Mugu; Githaiga, Benson Muriuki; Kimani, Salome Nduta

    2017-01-01

    Growth of fruits which form an important part of human diet has been jeopardized by the many fungal diseases that are present today. This study was conceived to isolate the most common fungal pathogens in passion fruits. Fungi were isolated using potato dextrose agar in addition to characterization using morphological, cultural, and biochemical means. Extraction of essential oils from rosemary ( Rosmarinus officinalis ) and eucalyptus ( Eucalyptus agglomerata ) was done. Before carrying the sensitivity test of essential oils to the fungal isolates, constituents of the essential oils were determined. The most common fungal pathogens isolated from passion fruits were Alternaria spp. (45%), Fusarium spp. (22%), Colletotrichum spp. (17%), and Penicillium spp. (16%). There was a relationship between heating time and yield of essential oils in rosemary ( r = 0.99) and eucalyptus ( r = 0.99). Conversely, there was no significant difference in the amount of essential oils produced by rosemary and eucalyptus ( P = 0.08). Furthermore, there was a significant difference in growth inhibition of the fungal pathogens between essential oils from rosemary and eucalyptus ( P = 0.000438). Fungal pathogens isolated from passion fruits can be controlled using essential oils from rosemary and eucalyptus. The oils need to be produced in large scale.

  7. The Global University Press

    Science.gov (United States)

    Dougherty, Peter J.

    2012-01-01

    The modern world's understanding of American university press has long been shaped by university-press books. American university-press books are good international advertisements for the universities whose logos grace their spines. The growth of transnational scholarship and the expansion of digital communications networks are converging in ways…

  8. DSN Beowulf Cluster-Based VLBI Correlator

    Science.gov (United States)

    Rogstad, Stephen P.; Jongeling, Andre P.; Finley, Susan G.; White, Leslie A.; Lanyi, Gabor E.; Clark, John E.; Goodhart, Charles E.

    2009-01-01

    The NASA Deep Space Network (DSN) requires a broadband VLBI (very long baseline interferometry) correlator to process data routinely taken as part of the VLBI source Catalogue Maintenance and Enhancement task (CAT M&E) and the Time and Earth Motion Precision Observations task (TEMPO). The data provided by these measurements are a crucial ingredient in the formation of precision deep-space navigation models. In addition, a VLBI correlator is needed to provide support for other VLBI related activities for both internal and external customers. The JPL VLBI Correlator (JVC) was designed, developed, and delivered to the DSN as a successor to the legacy Block II Correlator. The JVC is a full-capability VLBI correlator that uses software processes running on multiple computers to cross-correlate two-antenna broadband noise data. Components of this new system (see Figure 1) consist of Linux PCs integrated into a Beowulf Cluster, an existing Mark5 data storage system, a RAID array, an existing software correlator package (SoftC) originally developed for Delta DOR Navigation processing, and various custom- developed software processes and scripts. Parallel processing on the JVC is achieved by assigning slave nodes of the Beowulf cluster to process separate scans in parallel until all scans have been processed. Due to the single stream sequential playback of the Mark5 data, some ramp-up time is required before all nodes can have access to required scan data. Core functions of each processing step are accomplished using optimized C programs. The coordination and execution of these programs across the cluster is accomplished using Pearl scripts, PostgreSQL commands, and a handful of miscellaneous system utilities. Mark5 data modules are loaded on Mark5 Data systems playback units, one per station. Data processing is started when the operator scans the Mark5 systems and runs a script that reads various configuration files and then creates an experiment-dependent status database used to delegate parallel tasks between nodes and storage areas (see Figure 2). This script forks into three processes: extract, translate, and correlate. Each of these processes iterates on available scan data and updates the status database as the work for each scan is completed. The extract process coordinates and monitors the transfer of data from each of the Mark5s to the Beowulf RAID storage systems. The translate process monitors and executes the data conversion processes on available scan files, and writes the translated files to the slave nodes. The correlate process monitors the execution of SoftC correlation processes on the slave nodes for scans that have completed translation. A comparison of the JVC and the legacy Block II correlator outputs reveals they are well within a formal error, and that the data are comparable with respect to their use in flight navigation. The processing speed of the JVC is improved over the Block II correlator by a factor of 4, largely due to the elimination of the reel-to-reel tape drives used in the Block II correlator.

  9. Progressive Exponential Clustering-Based Steganography

    Directory of Open Access Journals (Sweden)

    Li Yue

    2010-01-01

    Full Text Available Cluster indexing-based steganography is an important branch of data-hiding techniques. Such schemes normally achieve good balance between high embedding capacity and low embedding distortion. However, most cluster indexing-based steganographic schemes utilise less efficient clustering algorithms for embedding data, which causes redundancy and leaves room for increasing the embedding capacity further. In this paper, a new clustering algorithm, called progressive exponential clustering (PEC, is applied to increase the embedding capacity by avoiding redundancy. Meanwhile, a cluster expansion algorithm is also developed in order to further increase the capacity without sacrificing imperceptibility.

  10. Information Clustering Based on Fuzzy Multisets.

    Science.gov (United States)

    Miyamoto, Sadaaki

    2003-01-01

    Proposes a fuzzy multiset model for information clustering with application to information retrieval on the World Wide Web. Highlights include search engines; term clustering; document clustering; algorithms for calculating cluster centers; theoretical properties concerning clustering algorithms; and examples to show how the algorithms work.…

  11. An Intelligent Clustering Based Methodology for Confusable ...

    African Journals Online (AJOL)

    Journal of the Nigerian Association of Mathematical Physics ... The system assigns patients with severity levels in all the clusters. ... The system compares favorably with diagnosis arrived at by experienced physicians and also provides patients' level of severity in each confusable disease and the degree of confusability of ...

  12. Orbit Clustering Based on Transfer Cost

    Science.gov (United States)

    Gustafson, Eric D.; Arrieta-Camacho, Juan J.; Petropoulos, Anastassios E.

    2013-01-01

    We propose using cluster analysis to perform quick screening for combinatorial global optimization problems. The key missing component currently preventing cluster analysis from use in this context is the lack of a useable metric function that defines the cost to transfer between two orbits. We study several proposed metrics and clustering algorithms, including k-means and the expectation maximization algorithm. We also show that proven heuristic methods such as the Q-law can be modified to work with cluster analysis.

  13. Enlistment Propensities of University Students

    National Research Council Canada - National Science Library

    Moskos, Charles

    2004-01-01

    Enlistment propensities of undergraduates were assessed through surveys conducted at Northwestern University, University of Arizona, University of California-Los Angeles, and University of Illinois-Chicago...

  14. Universal Payload Information Management

    Science.gov (United States)

    Elmore, Ralph B.

    2003-01-01

    As the overall manager and integrator of International Space Station (ISS) science payloads, the Payload Operations Integration Center (POIC) at Marshall Space Flight Center has a critical need to provide an information management system for exchange and control of ISS payload files as well as to coordinate ISS payload related operational changes. The POIC's information management system has a fundamental requirement to provide secure operational access not only to users physically located at the POIC, but also to remote experimenters and International Partners physically located in different parts of the world. The Payload Information Management System (PIMS) is a ground-based electronic document configuration management and collaborative workflow system that was built to service the POIC's information management needs. This paper discusses the application components that comprise the PIMS system, the challenges that influenced its design and architecture, and the selected technologies it employs. This paper will also touch on the advantages of the architecture, details of the user interface, and lessons learned along the way to a successful deployment. With PIMS, a sophisticated software solution has been built that is not only universally accessible for POIC customer s information management needs, but also universally adaptable in implementation and application as a generalized information management system.

  15. Coordinated control of active and reactive power of distribution network with distributed PV cluster via model predictive control

    Science.gov (United States)

    Ji, Yu; Sheng, Wanxing; Jin, Wei; Wu, Ming; Liu, Haitao; Chen, Feng

    2018-02-01

    A coordinated optimal control method of active and reactive power of distribution network with distributed PV cluster based on model predictive control is proposed in this paper. The method divides the control process into long-time scale optimal control and short-time scale optimal control with multi-step optimization. The models are transformed into a second-order cone programming problem due to the non-convex and nonlinear of the optimal models which are hard to be solved. An improved IEEE 33-bus distribution network system is used to analyse the feasibility and the effectiveness of the proposed control method

  16. 大学生问题行为及其与大五人格和自我控制的关系%Problem Behaviors among University Students and Their Associations with Big-five Personality and Self-control

    Institute of Scientific and Technical Information of China (English)

    司徒巧敏

    2017-01-01

    目的:考察广州市大学生问题行为的现状及其与大五人格和自我控制的关系.方法:本研究采用问卷法对551名广州市大学生的大五人格、自我控制以及问题行为进行测量.结果:①广州市大学生的内化和外化问题水平较低;②除开放性外,其余4个大五人格维度以及自我控制均与内化和外化问题行为呈显著相关关系(r=-0.02~0.81,P<0.01);③大五人格与自我控制共同解释39.1%内化问题和31.0%外化问题的方差变异,两者既共同又独立解释内化和外化问题的方差;开放性(B=0.09,P<0.01)、外向性(B=-0.10,P<0.01)、宜人性(B=-0.07,P<0.05)、神经质(B=0.25,P<0.01)与自我控制(B=-0.05,P<0.05)显著预测内化问题行为;开放性(B=0.05,P<0.05)、严谨性(g=-0.08,P<0.01)、宜人性(B=-0.18,P<0.01)、神经质(B-0.13,P<0.01)和自我控制(B--0.06,P<0.01)显著预测外化问题行为.结论:广州市大学生的问题行为总体程度较轻,大五人格特质和自我控制是大学生问题行为的重要保护性因子.%Objective:To investigate the levels of problem behaviors and their relations to big-five personality traits and self-control among university students in Guangzhou.Methods:A total of 567 university students participated in the research completing the FFI-NEO,the Brief Self-Control Scale,and the Adult Self-Report that assessed personality trait,self-control,and problem behaviors,respectively.Results:① University students from Guangzhou reported low levels of both internalizing and externalizing problems;②Except the associations between openness and internalizing and externalizing problems,the other four dimensions of the Big Five personality traits as well as self-control were significantly related to internalizing and externalizing problems(P<.01);and ③The big-five personality and self-control co-explained 39.1% and 30.1% of variance of internalizing and externalizing problems

  17. Improving tuberculosis control through the partnership between university and the health system Qualificar o controle da tuberculose mediante a parceria entre a Universidade e o Sistema de Saúde

    Directory of Open Access Journals (Sweden)

    Mariana Soares Valença

    2012-08-01

    Full Text Available INTRODUCTION: Tuberculosis (TB control is linked to the availability of qualified methods for microbiological diagnostics; however, microscopy with limited sensitivity is the only method available in many locations. The objective of this study was to evaluate the introduction of culture, drug susceptibility testing (DST, and genotyping in the routine of a Municipal Program of Tuberculosis Control. METHODS: Direct microscopy of sputum and culture in Ogawa-Kudoh were performed on 1,636 samples from 787 patients. DST of positive cultures was performed by resazurin microtiter assay and genotyping by mycobacterial interspersed repetitive units-variable number tandem repeat. RESULTS: A total 91 patients with TB were identified. The culture increased case detection by 32% compared with the microscopy; acquired resistance was 3.3% and the genotyping showed high genetic diversity. CONCLUSIONS: Ogawa-Kudoh contributed significantly to the increase in case detection and is suitable for implementation in poor-resource locations. The acquired resistance rate was lower than that reported in a recent Brazilian survey. The high genetic diversity is possibly related to the high TB prevalence in the population, as well as to early detection and suitable treatment of patients. The interaction between research and health care is important for reorienting the practice, transferring technology, and improving TB control.INTRODUÇÃO: O controle da tuberculose (TB está relacionado com a disponibilidade de métodos de diagnóstico microbiológico qualificados, no entanto a microscopia com a sua limitada sensibilidade é o único método disponível em muitos locais.O objetivo deste estudo foi avaliar a introdução da cultura, teste de sensibilidade aos antimicrobianos (TSA e genotipagem na rotina de um Programa Municipal de Controle da Tuberculose. MÉTODOS:A baciloscopia direta do escarro e cultura em Ogawa-Kudoh foram realizadas em 1.636 amostras de 787 pacientes. O

  18. University Students with Poor Reading Comprehension

    Science.gov (United States)

    Georgiou, George K.; Das, J. P.

    2015-01-01

    The present study aimed to examine the nature of the working memory and general cognitive ability deficits experienced by university students with a specific reading comprehension deficit. A total of 32 university students with poor reading comprehension but average word-reading skills and 60 age-word-matched controls with no comprehension…

  19. Hydrothermal synthesis, structure, and optical properties of two nanosized Ln{sub 26} rate at CO{sub 3} (Ln=Dy and Tb) cluster-based lanthanide-transition-metal-organic frameworks (Ln MOFs)

    Energy Technology Data Exchange (ETDEWEB)

    Zhang, Yu; Huang, Lian; Miao, Hao; Wan, Hong Xiang; Mei, Hua; Liu, Ying [State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University (China); Xu, Yan [State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University (China); State Key Laboratory of Coordination Chemistry, Nanjing Tech University (China)

    2015-02-16

    Two Ln{sub 26} rate at CO{sub 3} (Ln=Dy and Tb) cluster-based lanthanide-transition-metal-organic frameworks (Ln MOFs) formulated as [Dy{sub 26}Cu{sub 3}(Nic){sub 24}(CH{sub 3}COO){sub 8}(CO{sub 3}){sub 11}(OH){sub 26}(H{sub 2}O){sub 14}]Cl . 3 H{sub 2}O (1; HNic=nicotinic acid) and [Tb{sub 26}NaAg{sub 3}(Nic){sub 27}(CH{sub 3}COO){sub 6}(CO{sub 3}){sub 11}(OH){sub 26}Cl(H{sub 2}O){sub 15}] . 7.5 H{sub 2}O (2) have been successfully synthesized by hydrothermal methods and characterized by IR, thermogravimetric analysis (TGA), elemental analysis, and single X-ray diffraction. Compound 1 crystallizes in the monoclinic space group Cc with a=35.775(12) Aa, b=33.346(11) Aa, c=24.424(8) Aa, β=93.993(5) , V=29065(16) Aa{sup 3}, whereas 2 crystallizes in the triclinic space group P anti 1 with a=20.4929(19) Aa, b=24.671(2) Aa, c=29.727(3) Aa, α=81.9990(10) , β=88.0830(10) , γ=89.9940(10) , V=14875(2) Aa{sup 3}. Structural analysis indicates the framework of 1 is a 3D perovskite-like structure constructed out of CO{sub 3} rate at Dy{sub 26} building units and Cu{sup +} centers by means of nicotinic acid ligand bridging. In 2, however, nanosized CO{sub 3} rate at Tb{sub 26} units and [Ag{sub 3}Cl]{sup 2+} centers are connected by Nic{sup -} bridges to give rise to a 2D structure. It is worth mentioning that this kind of 4d-4f cluster-based MOF is quite rare as most of the reported analogous compounds are 3d-4f ones. Additionally, the solid-state emission spectra of pure compound 2 at room temperature suggest an efficient energy transfer from the ligand Nic{sup -} to Tb{sup 3+} ions, which we called the ''antenna effect''. Compound 2 shows a good two-photon absorption (TPA) with a TPA coefficient of 0.06947 cm GM{sup -1} (1 GM = 10{sup -50} cm{sup 4} s photon{sup -1}), which indicates that compound 2 might be a good choice for third-order nonlinear optical materials. (copyright 2015 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim)

  20. [Effectiveness and difficulty of education on nosocomial infection control for pre-clinical practice in the clinic, so-called inclusive clinical practice phase I, for students in the Faculty of Dentistry, Tokyo Medical and Dental University].

    Science.gov (United States)

    Sunakawa, Mitsuhiro; Matsumoto, Hiroyuki

    2009-03-01

    It has been planned to give pre-clinical practice in the clinic, so-called inclusive clinical practice phase I, for fifth-grade students in the School of Dentistry, Faculty of Dentistry, Tokyo Medical and Dental University, to give them the clinical training needed to perform dental practice and clinical practicum for comprehensive patient care, namely inclusive clinical practice phase II. This study analyzed the educative efficiency of the class on nosocomial infection control (NIC) by comparing achievements pre- and post-test, and discussed appropriate education planning on the NIC for dental students. Sixty-two fifth-grade students in the 2007 academic year sat the pre- and post-tests; the mean score and standard deviation of these tests were 5.30 +/- 1.26 (n = 56) and 8.59 +/- 1.18 (n = 59), respectively. There was a statistically significant difference between them (paired t-test, p < 0.01). Another finding was that students with high scores in the post-test did not necessarily achieve high ratings in the pre-test. It is suggested that the introduction of pre- and post-tests and the clarification of main points in the class as a theme of NIC could be a useful tool for increasing the comprehension of students on the theme. Since students at lower grades will attend clinical practice in the university hospital, it is thought that students should be given NIC training early in the clinical course, and the current curriculum should be improved to increase the opportunity for students to study this important issue.

  1. Universal power transistor base drive control unit

    Science.gov (United States)

    Gale, Allan R.; Gritter, David J.

    1988-01-01

    A saturation condition regulator system for a power transistor which achieves the regulation objectives of a Baker clamp but without dumping excess base drive current into the transistor output circuit. The base drive current of the transistor is sensed and used through an active feedback circuit to produce an error signal which modulates the base drive current through a linearly operating FET. The collector base voltage of the power transistor is independently monitored to develop a second error signal which is also used to regulate base drive current. The current-sensitive circuit operates as a limiter. In addition, a fail-safe timing circuit is disclosed which automatically resets to a turn OFF condition in the event the transistor does not turn ON within a predetermined time after the input signal transition.

  2. Whither the African University

    African Journals Online (AJOL)

    Sam

    reform. 1. Associate Professor, Department of Philosophy, Addis Ababa University ..... reduce African universities to virtually vocational schools. The World ..... theories, established institutions, and widely held beliefs according to the cannons ...

  3. Origin (?) of the Universe

    Indian Academy of Sciences (India)

    cal models of the universe are based on the idea, which is supported by ... Only the continuous distribution was clearly ... displaced from their natural locations, their observed wave- .... universe? Mathematical Models: Basic Assumptions.

  4. The Alien University

    DEFF Research Database (Denmark)

    Bengtsen, Søren Smedegaard

    2018-01-01

    - they are alien. The conditions of universities today is not one of crisis and upheaval, as with the postmodern universities, it is one of night travel and exile. The alien university leaves behind the epistemological skirmishes of the postmodern university with all its rhetoric and knowledge activism. Thinking...... in the alien university is a move into a whirlpool of nothingness, a “nocturnal space”, where “[d]arkness fills it like a content; it is full, but full of the nothingness of everything.” (Levinas, 2001, p.53). In the alien university thinking is not situated, and instead of rhizomes, and assemblages of thought......, there is merely an imposing and nightly “swarming of points.” (ibid.). There is no place for the alien university, and exactly this exile of thought makes possible the move beyond postmodernism and the mentality of political crisis. The alien university is not in the future as such, but it is not entirely...

  5. Energy conservation by single room control in public buildings dedicated to teaching, e.g. schools, vocational schools, technical universities and universities. Final report; Energieeinsparung durch Einzelraumregelung in oeffentlichen Liegenschaften mit Lehrbetrieb z.B. Schulen, Berufsschulen, Fachhochschulen und Universitaeten. Abschlussbericht

    Energy Technology Data Exchange (ETDEWEB)

    Nordmann, D.

    2000-07-01

    The energy-saving effect of single-room control of heating systems was investigated. For this purpose, a single-room control system was installed in a university building of 1961, and energy savings were monitored for a 2-year period, with the following results: 1. The potential savings amounted to 28% in both test years. 2. Different operating strategies were used in order to assess the contribution of heating system components. 3. The amortization period is less than 8 years, i.e. much less than the expected life of the systems. 4. Appropriate technical facilities improve the operation and control of a heat supply system in large buildings. 5. Proposals for improving the functionality of single room control systems were developed. 6. Recommendations were given on how to best modernize the control systems of large buildings. 7. The results can be applied to similar buildings as well. [German] Das Forschungsprojekt hatte folgende Ziele: 1. Die Ermittlung des Energie-Einsparpotentials 2. die daraus resultierende Wirtschaftlichkeit 3. die Optimierung der Regelstrategien 4. Erstellung von Handlungsempfehlungen bei der Sanierung mittels Einzelraumregelung. Es wurde in einem Trakt eines aus dem Jahre 1961 stammenden Hochschulgebaeudes, dessen Gebaeudehuelle sich noch in einem unveraenderten Zustand befindet, ein Einzelraumregelsystem mit zugehoeriger Gebaeudeleittechnik (GLT) installiert. Im Rahmen des Forschungsprojekts wurde ueber zwei Heizperioden die damit erreichte Einsparung an Heizenergie untersucht. Im Rahmen des Projektes konnte nachgewiesen werden, dass besonders bei Gebaeuden mit diskontinuierlicher Nutzung die regelungstechnische Sanierung sowohl oekonomisch als auch oekologisch sinnvoll ist. Im Einzelnen konnten die folgenden Ergebnisse ermittelt werden: 1. Es konnte in beiden Heizperioden des Untersuchungszeitraums ein Einsparpotential von ca. 28% nachgewiesen werden. 2. Es wurden unterschiedliche Strategien zum Betrieb des Einzelraumregelsystems

  6. Universal mechatronics coordinator

    Science.gov (United States)

    Muir, Patrick F.

    1999-11-01

    Mechatronic systems incorporate multiple actuators and sensor which must be properly coordinated to achieve the desired system functionality. Many mechatronic systems are designed as one-of-a-kind custom projects without consideration for facilitating future system or alterations and extensions to the current syste. Thus, subsequent changes to the system are slow, different, and costly. It has become apparent that manufacturing processes, and thus the mechatronics which embody them, need to be agile in order to more quickly and easily respond to changing customer demands or market pressures. To achieve agility, both the hardware and software of the system need to be designed such that the creation of new system and the alteration and extension of current system is fast and easy. This paper describes the design of a Universal Mechatronics Coordinator (UMC) which facilitates agile setup and changeover of coordination software for mechatronic systems. The UMC is capable of sequencing continuous and discrete actions that are programmed as stimulus-response pairs, as state machines, or a combination of the two. It facilitates the modular, reusable programing of continuous actions such as servo control algorithms, data collection code, and safety checking routines; and discrete actions such as reporting achieved states, and turning on/off binary devices. The UMC has been applied to the control of a z- theta assembly robot for the Minifactory project and is applicable to a spectrum of widely differing mechatronic systems.

  7. Gambling with the Universe

    Science.gov (United States)

    Hawking, Stephen

    2002-05-01

    This is an excerpt from Stephen Hawking's book The Universe in a Nutshell. Roger Penrose and Stephen Hawking, Lucasian Professor of Mathematics at the University of Cambridge, were able to show that Einstein's General Theory of Relativity implied that the universe and time itself must have had a beginning in a tremendous explosion. The discovery of the expansion of the universe is one of the great intellectual revolutions of the twentieth century.

  8. Inflation in the Universe

    International Nuclear Information System (INIS)

    Barrow, J.D.; California Univ., Berkeley; Turner, M.S.; Chicago Univ., IL

    1981-01-01

    The problems of explaining the observed isotropy, homogeneity, flatness and specific entropy of the Universe are discussed in the context of an inflationary Universe which has recently been suggested. It is shown that the isotropy cannot be ignored as a Universe with a large amount of anisotropy will not undergo the inflationary phase. A Universe with only moderate anistropy will undergo inflation and will be rapidly isotropized. (U.K.)

  9. Entrepreneurship in Finnish Universities

    Science.gov (United States)

    Nurmi, Piia; Paasio, Kaisu

    2007-01-01

    Purpose: The purpose of this paper is to discuss the role of universities in fostering and promoting entrepreneurship in Finland. In particular it seeks to examine the university-entrepreneurship relationship: its nature and how universities are addressing the entrepreneurship agenda. Design/methodology/approach: The paper is based on a large…

  10. Our Particle Universe

    Indian Academy of Sciences (India)

    and “why is the universe the way it is?” Not long before ... to each other. The interactions of particles in the universe ... theory by Jean Perrin in 1908 convinced people that atoms and ..... ing the origin and evolution of our universe13. This is an ...

  11. Hybrid Universities in Malaysia

    Science.gov (United States)

    Lee, Molly; Wan, Chang Da; Sirat, Morshidi

    2017-01-01

    Are Asian universities different from those in Western countries? Premised on the hypothesis that Asian universities are different because of hybridization between Western academic models and local traditional cultures, this paper investigates the hybrid characteristics in Malaysian universities resulting from interaction between contemporary…

  12. Establishing a University Foundation.

    Science.gov (United States)

    Lemish, Donald L.

    A handbook on how to establish a university foundation is presented. It presupposes that a foundation will be used as the umbrella organization for receiving all private gifts, restricted and unrestricted, for the benefit of a public college or university; and hence it chiefly addresses readers from public colleges and universities. Information is…

  13. The University Culture

    Science.gov (United States)

    Simplicio, Joseph

    2012-01-01

    In this article the author discusses the role university culture can play on a campus and how it can impact policy and practice. The article explores how a university's history, values, and vision form its culture and how this culture in turn affects its stability and continuity. The article discusses how newcomers within the university are…

  14. Motivating University Researchers

    NARCIS (Netherlands)

    Hendriks, P.H.J.; Alves de Sousa, C.A.

    2008-01-01

    This paper presents an empirical investigation into how universities approach the need and means for motivating university researchers through their management practices. The role of work motivation for this group deserves attention because pressures from outside and within the universities are said

  15. A Universal Reactive Machine

    DEFF Research Database (Denmark)

    Andersen, Henrik Reif; Mørk, Simon; Sørensen, Morten U.

    1997-01-01

    Turing showed the existence of a model universal for the set of Turing machines in the sense that given an encoding of any Turing machine asinput the universal Turing machine simulates it. We introduce the concept of universality for reactive systems and construct a CCS processuniversal...

  16. The early universe

    International Nuclear Information System (INIS)

    Steigman, G.

    1989-01-01

    The author discusses the physics of the early universe: the production and survival of relics from the big bang. The author comments on relic WIMPs as the dark matter in the universe. The remainder of this discussion is devoted to a review of the status of the only predictions from the early evolution of the universe that are accessible to astronomical observation: primordial nucleosynthesis

  17. Dropout Phenomena at Universities

    DEFF Research Database (Denmark)

    Larsen, Michael Søgaard; Kornbeck, Kasper Pihl; Kristensen, Rune

    Dropout from university studies comprises a number of complex phenomena with serious complex consequences and profound political attention. Further analysis of the field is, therefore, warranted. Such an analysis is offered here as a systematic review which gives answers based on the best possible...... such dropout phenomena occur at universities? What can be done by the universities to prevent or reduce such dropout phenomena?...

  18. Antimatter in the universe

    Science.gov (United States)

    Stigman, G.

    1973-01-01

    The means of detecting the presence of antimatter in the universe are discussed. Both direct, annihilation processes, and indirect, cosmic ray particles, were analyzed. All results were negative and it was concluded that no antimatter exists, if the universe is in fact symmetric. If the universe is not symmetric then matter and antimatter are well separated from each other.

  19. Universities as Development Hubs

    DEFF Research Database (Denmark)

    Hansen, Jens Aage; Lindegaard, Klaus; Lehmann, Martin

    2005-01-01

    Capacity-building in environment and development has been implemented and tested over the last decade through university and university consortia networking. Universities from Africa (Botswana and South Africa), Asia (Malaysia and Thailand), Central America (Costa Rica, El Salvador and Nicaragua...

  20. A protocol for a randomised active-controlled trial to evaluate the effects of an online mindfulness intervention on executive control, critical thinking and key thinking dispositions in a university student sample.

    Science.gov (United States)

    Noone, Chris; Hogan, Michael J

    2016-04-12

    While most modern research focuses on the clinical benefits of mindfulness, an emerging body of work suggests that mindfulness can facilitate self-regulation of everyday thinking in typically developing individuals. This behaviour is best captured using critical thinking assessments. The aim of this paper is to describe a rigorous, pre-registered study which will investigate the effect of an online mindfulness intervention on Executive Functioning, critical thinking skills and associated thinking dispositions. The design employed is a randomised-controlled 2 (condition) X 2 (time) parallel-group design which is explanatory in nature. A sample of at least 60 participants will be recruited from the pool of students at NUI Galway, with those between the ages of 18 and 65 with an adequate level of English included. Participants will be randomly assigned following screening, using block randomisation with a fixed block of 6 and a 1:1 ratio, to either the mindfulness meditation group or a sham meditation group. Both groups will be given access to the Headspace app. This is an app which provides guided meditations to users. Participants in each group will receive unique codes granting access to either the experimental or active-control intervention materials. Group allocation will be double-blinded. The primary outcome measures will assess mindfulness, executive functioning, critical thinking, actively open-minded thinking and need for cognition. Secondary outcome measures will assess eudaimonic and hedonic wellbeing, positive and negative affect, and real-world outcomes. These will be measured at baseline and at the end of the intervention. Manipulation checks will assess adherence to the intervention, meditation quality and task difficulty and enjoyment. If this intervention proves effective, it will show the potential of mindfulness practice to facilitate everyday critical thinking and should stimulate more interest in this line of research. If ineffective, claims

  1. The inflationary universe

    International Nuclear Information System (INIS)

    Guth, A.; Steinhardt, P.

    1993-01-01

    According to the inflationary model, the universe had a brief period of extraordinary rapid expansion, or inflation, during which its diameter increased by a factor at least 10 25 times larger (and perhaps much larger still) than had been previously thought. All the matter and energy in the universe could have been created from virtually nothing. Features of this article are: comparison of standard and inflationary modes, the horizon problem, the geometry of the universe, spontaneous symmetry breaking and the Higgs mechanism (energy density of the Higgs fields), the flatness problem, the new inflationary universe (new Higgs fields and false vacuum), conserved quantities in the universe. 12 figs., 11 refs

  2. The inflationary universe

    International Nuclear Information System (INIS)

    Linde, A.D.

    1984-01-01

    According to the inflationary universe scenario the universe in the very early stages of its evolution was exponentially expanding in the unstable vacuum-like state. At the end of the exponential expansion the energy of the unstable vacuum transforms into the energy of hot dense matter. Recently it was realised that the exponential expansion of the universe naturally occurs in a wide class of realistic theories of elementary particles. The inflationary universe scenario makes it possible to obtain a simple solution to many longstanding cosmological problems and leads to a crucial modification of the standard point of view of the large-scale structure of the universe. (author)

  3. The expanding universe

    CERN Document Server

    Lew, Kristi

    2011-01-01

    People have always been fascinated with the stars above and the universe that contains them. Over the years, astronomers have developed numerous theories to explain how the universe began, how it works, and what its ultimate fate will be. But all of the scientists' questions are far from answered. The Expanding Universe goes beyond the creation of the universe to explain how scientists think the universe works, grows, and changes, including what great thinkers Isaac Newton and Albert Einstein had to say about its fate. Readers will also learn about how researchers are slowly shedding light on

  4. The universe a biography

    CERN Document Server

    Gribbin, John

    2008-01-01

    The Universe: A Biography makes cosmology accessible to everyone. John Gribbin navigates the latest frontiers of scientific discovery to tell us what we really know about the history of the universe. Along the way, he describes how the universe began; what the early universe looked like; how its structure developed; and what emerged to hold it all together. He describes where the elements came from; how stars and galaxies formed; and the story of how life emerged. He even looks to the future: is the history of the universe going to end with a Big Crunch or a Big Rip.

  5. A lightweight universe?

    Science.gov (United States)

    Bahcall, Neta A.; Fan, Xiaohui

    1998-01-01

    How much matter is there in the universe? Does the universe have the critical density needed to stop its expansion, or is the universe underweight and destined to expand forever? We show that several independent measures, especially those utilizing the largest bound systems known—clusters of galaxies—all indicate that the mass-density of the universe is insufficient to halt the expansion. A promising new method, the evolution of the number density of clusters with time, provides the most powerful indication so far that the universe has a subcritical density. We show that different techniques reveal a consistent picture of a lightweight universe with only ∼20–30% of the critical density. Thus, the universe may expand forever. PMID:9600898

  6. 8 February 2010: University College London President & Provost M. Grant signing the guest book with CERN Director-General R.Heuer and Coordinator for External Relations F. Pauss; visiting the ATLAS control room with Collaboration Spokesperson F. Gianotti and Adviser for Non-Member States J. Ellis.

    CERN Multimedia

    Maximilien Brice

    2010-01-01

    Caption for photograph 1002015 01: 8 February 2010: University College London President & Provost M. Grant (6th from left) visiting ATLAS control room with, from left to right, ATLAS Deputy Spokesperson and University of Birmingham D. Charlton; UCL Head of the HEP group M. Lancaster; UCL Vice Provost for research D. Price; ATLAS Collaboration Spokesperson F. Gianotti; UCL Department of Physics and Astronomy N. Konstantinidis; UCL Head of Physics Department J. Tennyson; Head of the UCL-ATLAS group and Vice-Dean for Research in the faculty of Mathematical and Physical Sciences J. Butterworth, visiting the ATLAS control room.

  7. Assessment of generalizability, applicability and predictability (GAP) for evaluating external validity in studies of universal family-based prevention of alcohol misuse in young people: systematic methodological review of randomized controlled trials.

    Science.gov (United States)

    Fernandez-Hermida, Jose Ramon; Calafat, Amador; Becoña, Elisardo; Tsertsvadze, Alexander; Foxcroft, David R

    2012-09-01

    To assess external validity characteristics of studies from two Cochrane Systematic Reviews of the effectiveness of universal family-based prevention of alcohol misuse in young people. Two reviewers used an a priori developed external validity rating form and independently assessed three external validity dimensions of generalizability, applicability and predictability (GAP) in randomized controlled trials. The majority (69%) of the included 29 studies were rated 'unclear' on the reporting of sufficient information for judging generalizability from sample to study population. Ten studies (35%) were rated 'unclear' on the reporting of sufficient information for judging applicability to other populations and settings. No study provided an assessment of the validity of the trial end-point measures for subsequent mortality, morbidity, quality of life or other economic or social outcomes. Similarly, no study reported on the validity of surrogate measures using established criteria for assessing surrogate end-points. Studies evaluating the benefits of family-based prevention of alcohol misuse in young people are generally inadequate at reporting information relevant to generalizability of the findings or implications for health or social outcomes. Researchers, study authors, peer reviewers, journal editors and scientific societies should take steps to improve the reporting of information relevant to external validity in prevention trials. © 2012 The Authors. Addiction © 2012 Society for the Study of Addiction.

  8. Universities scale like cities.

    Directory of Open Access Journals (Sweden)

    Anthony F J van Raan

    Full Text Available Recent studies of urban scaling show that important socioeconomic city characteristics such as wealth and innovation capacity exhibit a nonlinear, particularly a power law scaling with population size. These nonlinear effects are common to all cities, with similar power law exponents. These findings mean that the larger the city, the more disproportionally they are places of wealth and innovation. Local properties of cities cause a deviation from the expected behavior as predicted by the power law scaling. In this paper we demonstrate that universities show a similar behavior as cities in the distribution of the 'gross university income' in terms of total number of citations over 'size' in terms of total number of publications. Moreover, the power law exponents for university scaling are comparable to those for urban scaling. We find that deviations from the expected behavior can indeed be explained by specific local properties of universities, particularly the field-specific composition of a university, and its quality in terms of field-normalized citation impact. By studying both the set of the 500 largest universities worldwide and a specific subset of these 500 universities--the top-100 European universities--we are also able to distinguish between properties of universities with as well as without selection of one specific local property, the quality of a university in terms of its average field-normalized citation impact. It also reveals an interesting observation concerning the working of a crucial property in networked systems, preferential attachment.

  9. Universities scale like cities.

    Science.gov (United States)

    van Raan, Anthony F J

    2013-01-01

    Recent studies of urban scaling show that important socioeconomic city characteristics such as wealth and innovation capacity exhibit a nonlinear, particularly a power law scaling with population size. These nonlinear effects are common to all cities, with similar power law exponents. These findings mean that the larger the city, the more disproportionally they are places of wealth and innovation. Local properties of cities cause a deviation from the expected behavior as predicted by the power law scaling. In this paper we demonstrate that universities show a similar behavior as cities in the distribution of the 'gross university income' in terms of total number of citations over 'size' in terms of total number of publications. Moreover, the power law exponents for university scaling are comparable to those for urban scaling. We find that deviations from the expected behavior can indeed be explained by specific local properties of universities, particularly the field-specific composition of a university, and its quality in terms of field-normalized citation impact. By studying both the set of the 500 largest universities worldwide and a specific subset of these 500 universities--the top-100 European universities--we are also able to distinguish between properties of universities with as well as without selection of one specific local property, the quality of a university in terms of its average field-normalized citation impact. It also reveals an interesting observation concerning the working of a crucial property in networked systems, preferential attachment.

  10. The Universe in a nutshell

    International Nuclear Information System (INIS)

    Hawking, S.

    2002-01-01

    In this new book Hawking takes us to the cutting edge of theoretical physics, where truth is often stranger than fiction, to explain in laymen's terms the principles that control our universe. Like many in the community of theoretical physicists, Professor Hawking is seeking to uncover the grail of science -- the elusive Theory of Everything that lies at the heart of the cosmos. In his accessible and often playful style, he guides us on his search to uncover the secrets of the universe -- from supergravity to supersymmetry, from quantum theory to M-theory, from holography to duality. He takes us to the wild frontiers of science, where superstring theory and p-branes may hold the final clue to the puzzle. And he lets us behind the scenes of one of his most exciting intellectual adventures as he seeks t o combine Einstein's General Theory of Relativity and Richard Feynman's idea of multiple histories into one complete unified theory that will describe everything that happens in the universe. 'With characteristic exuberance, Professor Hawking invites us to be fellow travelers on this extraordinary voyage through space-time'. Copious four-color illustrations help clarify this journey into a surreal wonderland where particles, sheets, and strings move in eleven dimensions; where black holes evaporate and disappear, taking their secret with them; and where the original cosmic seed from which our own universe sprang was a tiny nut. The Universe in a Nutshell is essential reading for all of us who want to understand the universe in which we live

  11. University of Maryland MRSEC - Collaborations

    Science.gov (United States)

    . University of Maryland Materials Research Science and Engineering Center Home About Us Leadership , National Nanotechnology Lab, Neocera, NIST, Rowan University, Rutgers University, Seagate, Tokyo Tech

  12. [Universal electrogustometer EG-1].

    Science.gov (United States)

    Pleskacz, Witold A; Wałkanis, Andrzej; Rapiejko, Piotr; Jurkiewicz, Dariusz

    2009-01-01

    Electrogustometry has been used as a clinical tool for diagnosis and assessment of a variety of conditions. Since the lack of versatile electrogustometer for research and diagnosis, the new electrogustometer EG-1 was developed in 2006. It was done in cooperation between Warsaw University of Technology and Military Institute of Medicine in Warsaw. EG-1 allows quantitative estimation of taste perception threshold using both static and impulse electrogustometry with bipolar electrode. It is a fully autonomous, battery powered and portable instrument. Because of small size and weight, it can be easily placed in any environment. Microprocessor controlled measurement system and user-friendly interface (LCD display with simple keyboard) make EG-1 electrogustometer very handy and flexible in operation. Data obtained during measurements is stored in the internal device memory. After taste examinations measurement data can be transferred to a personal computer via inbuilt USB port for further analysis and storage. EG-1 can generate three predefined variously shaped current impulses: sinus-, saw- and rectangle-shaped. There is an optional possibility of creating own shapes of stimulus puls by the user. The electrical parameters of generated pulses are as follow: current amplitude 1-2000 microA regulated with 1 microA step, stimulus frequency 0(DC)-500 Hz regulated with 5 Hz step, controlable fulfillment factor and signal rise time (optional for automatic measurements). The operator can trigger the stimuli via a hand switch on the bipolar electrode (with gold-plated endings), via keyboard or via additional independent hand switch. Three years of experience collected during EG-1 exploitation allowed to design a new version of electrogustometer EG-2 with a touch panel and color graphical display.

  13. Rectors of European universities

    CERN Multimedia

    Maximilien Brice

    2003-01-01

    Several rectors of European universities visited CERN recently while in Geneva for a conference on coordination between their institutions. The visit began with a welcome by Roger Cashmore, CERN Director of Collider Programmes,and continued with tours of CMS, ALICE and the LHC magnet assembly hall. Photos 01, 02: The visitors in the ALICE assembly hall: (left to right) Dr. Raymond Werlen, Deputy Secretary-General of the Conference of Rectors of Swiss Universities; visit guide Prof. Alain Blondel, Department of Nuclear and Corpuscular Physics, University of Geneva; Prof. Adriano Pimpão, Rector of the University of Algarve, President of the Council of Rectors of Portuguese Universities; Prof. Jean-Pierre Finance, Conference of University Presidents, France; Prof. Jean-Paul Lehners, Vice-President of the Centre Universitaire, Luxemburg.

  14. Universities as Research Partners

    OpenAIRE

    Hall, Bronwyn; Link, Albert; Scott, John

    2010-01-01

    Universities are a key institution in the U.S. innovation system, and an important aspect of their involvement is the role they play in public-private partnerships. This note offers insights into the performance of industry-university research partnerships, using a survey of precommercial research projects funded by the Advanced Technology Program. Although results must be interpreted cautiously because of the small size of the sample, the study finds that projects with university involvement...

  15. Geometry of the Universe

    International Nuclear Information System (INIS)

    Gurevich, L.Eh.; Gliner, Eh.B.

    1978-01-01

    Problems of investigating the Universe space-time geometry are described on a popular level. Immediate space-time geometries, corresponding to three cosmologic models are considered. Space-time geometry of a closed model is the spherical Riemann geonetry, of an open model - is the Lobachevskij geometry; and of a plane model - is the Euclidean geometry. The Universe real geometry in the contemporary epoch of development is based on the data testifying to the fact that the Universe is infinitely expanding

  16. University Advertising and Universality in Messaging

    Science.gov (United States)

    Diel, Stan R.; Katsinas, Stephen

    2018-01-01

    University and college institutional advertisements, which typically are broadcast as public service announcements during the halftime of football games, were the subject of a quantitative analysis focused on commonality in messaging and employment of the semiotic theory of brand advertising. Findings indicate advertisements focus on students'…

  17. From Universal Access to Universal Proficiency.

    Science.gov (United States)

    Lewis, Anne C.

    2003-01-01

    Panel of five education experts--Elliot Eisner, John Goodlad, Patricia Graham, Phillip Schlechty, and Warren Simons--answer questions related to recent school reform efforts, such as the No Child Left Behind Act, aimed at achieving universal educational proficiency. (PKP)

  18. Imagining the Future University

    DEFF Research Database (Denmark)

    Bengtsen, Søren Smedegaard; Barnett, Ronald

    'Imagining the Future University' is a special issue in the journal Philosophy and Theory in Higher Education, published by Peter Lang. Editor in Chief of the journal is John Petrovic, University of Alabama. The speciale issue is edited by Søren Bengtsen and Ronald Barnett.......'Imagining the Future University' is a special issue in the journal Philosophy and Theory in Higher Education, published by Peter Lang. Editor in Chief of the journal is John Petrovic, University of Alabama. The speciale issue is edited by Søren Bengtsen and Ronald Barnett....

  19. Mathematics at University

    DEFF Research Database (Denmark)

    Winsløw, Carl

    2015-01-01

    Mathematics is studied in universities by a large number of students. At the same time it is a field of research for a (smaller) number of university teachers. What relations, if any, exist between university research and teaching of mathematics? Can research “support” teaching? What research...... and what teaching? In this presentation we propose a theoretical framework to study these questions more precisely, based on the anthropological theory of didactics. As a main application, the links between the practices of mathematical research and university mathematics teaching are examined...

  20. University of Washington

    Data.gov (United States)

    Federal Laboratory Consortium — The theme of the University of Washington based Center for Child Environmental Health Risks Research (CHC) is understanding the biochemical, molecular and exposure...