WorldWideScience

Sample records for online systems

  1. Trust and Online Reputation Systems

    Science.gov (United States)

    Kwan, Ming; Ramachandran, Deepak

    Web 2.0 technologies provide organizations with unprecedented opportunities to expand and solidify relationships with their customers, partners, and employees—while empowering firms to define entirely new business models focused on sharing information in online collaborative environments. Yet, in and of themselves, these technologies cannot ensure productive online interactions. Leading enterprises that are experimenting with social networks and online communities are already discovering this fact and along with it, the importance of establishing trust as the foundation for online collaboration and transactions. Just as today's consumers must feel secure to bank, exchange personal information and purchase products and services online; participants in Web 2.0 initiatives will only accept the higher levels of risk and exposure inherent in e-commerce and Web collaboration in an environment of trust. Indeed, only by attending to the need to cultivate online trust with customers, partners and employees will enterprises ever fully exploit the expanded business potential posed by Web 2.0. But developing online trust is no easy feat. While various preliminary attempts have occurred, no definitive model for establishing or measuring it has yet been established. To that end, nGenera has identified three, distinct dimensions of online trust: reputation (quantitative-based); relationship (qualitative-based) and process (system-based). When considered together, they form a valuable model for understanding online trust and a toolbox for cultivating it to support Web 2.0 initiatives.

  2. Media Systems Online and Off

    DEFF Research Database (Denmark)

    Ørsten, Mark; Willig, Ida; Benson, Rodney

    2012-01-01

    This study examines how media system differences in the form of news change or stay the same as newspapers in the United States (liberal), Denmark (democratic corporatist), and France (polarized pluralist) move from print to online. Internet technological affordances are posited to move online news...... voices increase slightly. A lesser degree of change in France may be due to greater state insulation from market pressures; some contradictory tendencies in Denmark indicate that technological influences are shaped by contextual national factors....

  3. Design of online shopping system

    OpenAIRE

    Li, Yueyuan

    2011-01-01

    E-commerce is a kind of comprehensive activity of management automation, business information network and financial electronic technology. It is a kind of commercial activity accomplished through the information network in all kinds of business activities in the world. As a new marketing model, the emergence of online stores is an epoch-making revolution in the field of product circulation. The thesis focuses on a study of how to design a small online shopping system which is simple and f...

  4. The STAR Online Control System

    Science.gov (United States)

    Gilkes, M. L.; Chrin, J.; Olchanski, K.; Pruneau, C. A.; Stone, N. T. B.; Wenaus, T.

    1998-10-01

    The STAR Online Software Group has designed and built a complete control system for the STAR experiment. We support SUN Solaris and Windows NT, and utilize commercial software packages including Orbix (C++) for CORBA IPC, Objectivity/DB (C++) for the configuration database, Borland JBuilder for Java GUI development, EPICS and CDEV for hardware interfacing, and RogueWave libraries (STL, Tools.h++, Threads.h++, Net.h++). The system embodies a unified object-oriented approach to experiment control. Device-specific details are encapsulated in a single server unique to each subsystem (i.e. DAQ, Trigger, sub-detectors). Key online system features include management of subsystem states, configuration management, CORBA messaging, arbitration and synchronization of multiple runs, participation of subsystems in multiple runs, a user interface incorporating ROOT and its C++ interpreter for scripting, JAVA control GUIs with automatic logging, and an online event pool from which consumers can interactively select events.

  5. The KLOE Online Calibration System

    Institute of Scientific and Technical Information of China (English)

    E.Pasqualucci

    2001-01-01

    Based on all the features of the KLOE online software,the online calibration system performs current calibration quality checking in real time and starts automatically new calibration procedures when needed.Acalibration manager process controls the system,implementing the interface to the online system,receiving information from the run control and translating its state transitions to a separate state machine.It acts as a " calibration run controller"and performs failure recovery when requested by a set of process checkers.The core of the system is a multi-threaded OO histogram server that receives histogramming commands by remote processes and operates on local ROOT histograms.A client library and C,fortran and C++ application interface libraries allow the user to connect and define his own histogram or read histograms owned by others using an bool-like interface.Several calibration processes running in parallel in a destributed,multiplatform environment can fill the same histograms,allowing fast external information check.A monitor thread allow remote browsing for visual inspection,Pre-filtered data are read in nonprivileged spy mode from the data acquisition system via the Kloe Integrated Dataflow,privileged spy mode from the data acquisiton system via the Kole Integrated Dataflow.The main characteristics of the system are presented.

  6. Immune system simulation online

    DEFF Research Database (Denmark)

    Rapin, Nicolas; Lund, Ole; Castiglione, Filippo

    2011-01-01

    MOTIVATION: The recognition of antigenic peptides is a major event of an immune response. In current mesoscopic-scale simulators of the immune system, this crucial step has been modeled in a very approximated way. RESULTS: We have equipped an agent-based model of the immune system with immuno......-informatics methods to allow the simulation of the cardinal events of the antigenic recognition, going from single peptides to whole proteomes. The recognition process accounts for B cell-epitopes prediction through Parker-scale affinity estimation, class I and II HLA peptide prediction and binding through position...

  7. Immune system simulation online

    DEFF Research Database (Denmark)

    Rapin, Nicolas; Lund, Ole; Castiglione, Filippo

    2011-01-01

    MOTIVATION: The recognition of antigenic peptides is a major event of an immune response. In current mesoscopic-scale simulators of the immune system, this crucial step has been modeled in a very approximated way. RESULTS: We have equipped an agent-based model of the immune system with immuno......-informatics methods to allow the simulation of the cardinal events of the antigenic recognition, going from single peptides to whole proteomes. The recognition process accounts for B cell-epitopes prediction through Parker-scale affinity estimation, class I and II HLA peptide prediction and binding through position...... simulation. AVAILABILITY: http://www.cbs.dtu.dk/services/C-ImmSim-10.1/ CONTACT: f.castiglione@iac.cnr.it...

  8. PHENIX on-line systems

    Energy Technology Data Exchange (ETDEWEB)

    Adler, S.S.; Allen, M.; Alley, G.; Amirikas, R.; Arai, Y.; Awes, T.C.; Barish, K.N.; Barta, F.; Batsouli, S.; Belikov, S.; Bennett, M.J.; Bobrek, M.; Boissevain, J.G.; Boose, S.; Britton, C.; Britton, L.; Bryan, W.L.; Cafferty, M.M.; Carey, T.A.; Chang, W.C.; Chi, C.Y.; Chiu, M.; Cianciolo, V.; Cole, B.A.; Constantin, P.; Cook, K.C.; Cunitz, H.; Desmond, E.J.; Ebisu, K.; Efremenko, Y.V.; El Chenawi, K.; Emery, M.S.; Engo, D.; Ericson, N.; Fields, D.E.; Frank, S.; Frantz, J.E.; Franz, A.; Frawley, A.D.; Fried, J.; Gannon, J.; Gee, T.F.; Gentry, R.; Giannotti, P.; Gustafsson, H.-A.; Haggerty, J.S.; Hahn, S.; Halliwell, J.; Hamagaki, H.; Hansen, A.G.; Hara, H.; Harder, J.; He, X.; Heistermann, F.; Hemmick, T.K.; Hibino, M.; Hill, J.C. E-mail: jhill@iastate.edu; Homma, K.; Jacak, B.V.; Jagadish, U.; Jia, J.; Kajihara, F.; Kametani, S.; Kamyshkov, Y.; Kandasamy, A.; Kang, J.H.; Kapustinsky, J.; Katou, K.; Kelley, M.A.; Kelly, S.; Kikuchi, J.; Kim, S.Y.; Kim, Y.G.; Kistenev, E.; Kotchetkov, D.; Kurita, K.; Lajoie, J.G.; Lenz, M.; Lenz, W.; Li, X.H.; Lin, S.; Liu, M.X.; Markacs, S.; Matathias, F.; Matsumoto, T.; Mead, J.; Mischke, R.E.; Mishra, G.C.; Moore, A.; Muniruzzamann, M.; Musrock, M.; Nagle, J.L.; Nandi, B.K.; Newby, J.; Nystrand, J.; O' Brien, E.; O' Connor, P.; Ohnishi, H.; Oskarsson, A.; Osterman, L.; Oyama, K.; Paffrath, L.; Pancake, C.E.; Pantuev, V.S.; Petridis, A.N.; Pisani, R.P.; Plagge, T.; Plasil, F.; Purschke, M.L.; Rankowitz, S.; Rao, R.; Rau, M.; Read, K.F.; Ryu, S.S.; Sakaguchi, T.; Sato, H.D.; Seto, R.; Shiina, T.; Silvermyr, D.; Simon-Gillo, J.; Simpson, M.; Sippach, W.; Skank, H.D.; Skutnik, S.; Sleege, G.A.; Smith, G.D.; Smith, M.; Stankus, P.W.; Steinberg, P.; Sugitate, T.; Sullivan, J.P.; Taketani, A.; Tamai, M.; Tanaka, Y.; Thomas, W.D.; Todd, R.; Toldo, F.; Turner, G.; Ushiroda, T.; Velkovska, J.; Hecke, H.W. van; Lith, M. van; Villatte, L.; Achen, W. von; Walker, J.W.; Wang, H.Q.; White, S.N.; Wintenberg, A.L.; Witzig, C.; Wood, L.[and others

    2003-03-01

    The PHENIX On-Line system takes signals from the Front End Modules (FEM) on each detector subsystem for the purpose of generating events for physics analysis. Processing of event data begins when the Data Collection Modules (DCM) receive data via fiber-optic links from the FEMs. The DCMs format and zero suppress the data and generate data packets. These packets go to the Event Builders (EvB) that assemble the events in final form. The Level-1 trigger (LVL1) generates a decision for each beam crossing and eliminates uninteresting events. The FEMs carry out all detector processing of the data so that it is delivered to the DCMs using a standard format. The FEMs also provide buffering for LVL1 trigger processing and DCM data collection. This is carried out using an architecture that is pipelined and deadtimeless. All of this is controlled by the Master Timing System (MTS) that distributes the RHIC clocks. A Level-2 trigger (LVL2) gives additional discrimination. A description of the components and operation of the PHENIX On-Line system is given and the solution to a number of electronic infrastructure problems are discussed.

  9. ICE Online Detainee Locator System

    Data.gov (United States)

    Department of Homeland Security — The Online Detainee Locator datasets provide the location of a detainee who is currently in ICE custody, or who was release from ICE custody for any reason with the...

  10. State Online Query System (SOLQ)

    Data.gov (United States)

    Social Security Administration — Designed specifically for State Human Service agencies, SOLQ allows States real-time online access to SSA's SSN verification service and, if permitted, retrieval of...

  11. High Performance Work Systems for Online Education

    Science.gov (United States)

    Contacos-Sawyer, Jonna; Revels, Mark; Ciampa, Mark

    2010-01-01

    The purpose of this paper is to identify the key elements of a High Performance Work System (HPWS) and explore the possibility of implementation in an online institution of higher learning. With the projected rapid growth of the demand for online education and its importance in post-secondary education, providing high quality curriculum, excellent…

  12. Teaching Dance with Online Course Management Systems

    Science.gov (United States)

    Colombi, Erika; Knosp, Suzanne

    2017-01-01

    As a result of easier access to and functionality of the Internet, online course management systems (CMSs) began to be developed in the mid-1990s. These technological tools were created to fill a need in the growing field of teaching through online courses.Most notable of these course tools are Blackboard (2015) and Desire2Learn (1999). Both of…

  13. Study on Online Hotel Reservation Systems

    OpenAIRE

    Alleweldt, Frank; Tonner, Klaus; McDonald, Marc

    2009-01-01

    This study, conducted by Civic Consulting, looks at both pre-contractual and contractual matters concerning online hotel reservation systems, examines relevant Community rules, identifies gaps and, where needed, discusses possible policy options. Key conclusions The study shows that the impact of Community law on online hotel

  14. CDC WONDER: Online Tuberculosis Information System (OTIS)

    Data.gov (United States)

    U.S. Department of Health & Human Services — The Online Tuberculosis Information System (OTIS) on CDC WONDER contains information on verified tuberculosis (TB) cases reported to the Centers for Disease Control...

  15. Highlighting the Vulnerabilities of Online Banking System

    Directory of Open Access Journals (Sweden)

    Laith T Khrais

    2015-12-01

    Full Text Available As a result of the growing use of the Internet and developing advanced technology systems globally, there has been an apparent increase in the usage of online banking system across the world, accompanied by widespread incidents of fraud and attack. This paper gives a simple description of the online banking mechanism and the nature of the attacks that involved in the process of conducting an online transaction through a computer, along with the security models and measures that can be used to block the threats.

  16. Medical Students’ Acceptance of Online Assessment Systems

    Directory of Open Access Journals (Sweden)

    Petrisor Marius

    2016-03-01

    Full Text Available Objective: The increased use of computers in education lead to computerized assessments, especially web-based assessment systems The aim of this study is to evaluate students’ acceptance of being evaluated using an online web-based assessment system. Methods: A transversal study was performed where a sample of students that used and were accustomed to an online assessment system were asked to fill in a short questionnaire and evaluate its use. Results: The questionnaire items responses show students’ preference for online assessment, as opposed to other assessment forms, like oral examination or classical pen and paper examination. Also it is noticeable the increase in the student number that prefer the online assessment as we move up through one year of study to the next. Conclusions: The study revealed a high level of acceptance for the online multiple choice questions test as an assessment method. Students’ opinion is that online tests are better suited for knowledge assessment and are more objective.

  17. MODEL DRIVEN DEVELOPMENT OF ONLINE BANKING SYSTEMS

    Directory of Open Access Journals (Sweden)

    Bresfelean Vasile Paul

    2011-07-01

    Full Text Available In case of online applications the cycle of software development varies from the routine. The online environment, the variety of users, the treatability of the mass of information created by them, the reusability and the accessibility from different devices are all factors of these systems complexity. The use of model drive approach brings several advantages that ease up the development process. Working prototypes that simplify client relationship and serve as the base of model tests can be easily made from models describing the system. These systems make possible for the banks clients to make their desired actions from anywhere. The user has the possibility of accessing information or making transactions.

  18. On Differentially Private Online Collaborative Recommendation Systems

    OpenAIRE

    Gilbert, Seth; Liu, Xiao; Yu, Haifeng

    2015-01-01

    In collaborative recommendation systems, privacy may be compromised, as users' opinions are used to generate recommendations for others. In this paper, we consider an online collaborative recommendation system, and we measure users' privacy in terms of the standard differential privacy. We give the first quantitative analysis of the trade-offs between recommendation quality and users' privacy in such a system by showing a lower bound on the best achievable privacy for any non-trivial algorith...

  19. Online Scheduling in Distributed Message Converter Systems

    NARCIS (Netherlands)

    Risse, Thomas; Wombacher, Andreas; Surridge, Mike; Taylor, Steve; Aberer, Karl

    2001-01-01

    The optimal distribution of jobs among hosts in distributed environments is an important factor to achieve high performance. The optimal strategy depends on the application. In this paper we present a new online scheduling strategy for distributed EDI converter system. The strategy is based on the B

  20. Online Scheduling in Distributed Message Converter Systems

    NARCIS (Netherlands)

    Risse, Thomas; Wombacher, Andreas; Surridge, Mike; Taylor, Steve; Aberer, Karl

    2001-01-01

    The optimal distribution of jobs among hosts in distributed environments is an important factor to achieve high performance. The optimal strategy depends on the application. In this paper we present a new online scheduling strategy for distributed EDI converter system. The strategy is based on the B

  1. Online Scheduling in Distributed Message Converter Systems

    NARCIS (Netherlands)

    Risse, Thomas; Wombacher, Andreas; Surridge, Mike; Taylor, Steve; Aberer, Karl

    The optimal distribution of jobs among hosts in distributed environments is an important factor to achieve high performance. The optimal strategy depends on the application. In this paper we present a new online scheduling strategy for distributed EDI converter system. The strategy is based on the

  2. NASA's online machine aided indexing system

    Science.gov (United States)

    Silvester, June P.; Genuardi, Michael T.; Klingbiel, Paul H.

    1993-01-01

    This report describes the NASA Lexical Dictionary, a machine aided indexing system used online at the National Aeronautics and Space Administration's Center for Aerospace Information (CASI). This system is comprised of a text processor that is based on the computational, non-syntactic analysis of input text, and an extensive 'knowledge base' that serves to recognize and translate text-extracted concepts. The structure and function of the various NLD system components are described in detail. Methods used for the development of the knowledge base are discussed. Particular attention is given to a statistically-based text analysis program that provides the knowledge base developer with a list of concept-specific phrases extracted from large textual corpora. Production and quality benefits resulting from the integration of machine aided indexing at CASI are discussed along with a number of secondary applications of NLD-derived systems including on-line spell checking and machine aided lexicography.

  3. Total on-line purchasing system (TOPS)

    Energy Technology Data Exchange (ETDEWEB)

    Collins, N.

    1995-11-01

    The Information Management Division (IMD) at LLNL is developing a new purchasing system for the Procurement Department. The first major development of this new system is called, {open_quotes}Total On-Line Purchasing System{close_quotes} (TOPS). TOPS will help speed up the requisitioning process by having requisitions electronically entered by requesters and electronically sent to buyers to be put on Purchase Orders. The new purchasing system will use Electronic Commerce (EC)/Electronic Data Interchange (EDI), to help increase transaction flows for shipping notices, RFQs, Quotes, Purchase Orders, and Invoices. ANSI X.12 is the EDI standard that this new EC will use.

  4. Software Management in the LHCb Online System

    CERN Multimedia

    Bonaccorsi, E; Closier, J; Degaudenzi, H; Moine, G; Neufeld, N

    2009-01-01

    LHCb has a large online IT infrastructure with thousands of servers and embedded systems, network routers and switches, databases and storage appliances. These systems run a large number of different applications on various operating systems. The dominant operating systems are Linux and MS-Windows. This large heterogeneous environment, operated by a small number of administrators, requires that new software or updates can be pushed quickly, reliably and as automated as possible. We present here the general design of LHCb's software management along with the main tools: LinusFC / Quattor, Microsoft SMS and CMT.

  5. Computers in Information Sciences: On-Line Systems.

    Science.gov (United States)

    COMPUTERS, *BIBLIOGRAPHIES, *ONLINE SYSTEMS, * INFORMATION SCIENCES , DATA PROCESSING, DATA MANAGEMENT, COMPUTER PROGRAMMING, INFORMATION RETRIEVAL, COMPUTER GRAPHICS, DIGITAL COMPUTERS, ANALOG COMPUTERS.

  6. Remote online machine fault diagnostic system

    Science.gov (United States)

    Pan, Min-Chun; Li, Po-Ching

    2004-07-01

    The study aims at implementing a remote online machine fault diagnostic system built up in the architecture of both the BCB software-developing environment and Internet transmission communication. Variant signal-processing computation schemes for signal analysis and pattern recognition purposes are implemented in the BCB graphical user interface. Hence, machine fault diagnostic capability can be extended by using the socket application program interface as the TCP/IP protocol. In the study, the effectiveness of the developed remote diagnostic system is validated by monitoring a transmission-element test rig. A complete monitoring cycle includes data acquisition, signal processing, feature extraction, pattern recognition through the ANNs, and online video monitoring, is demonstrated.

  7. LHCb Online Log Analysis and Maintenance System

    CERN Document Server

    Garnier, J-C; Neufeld, N; Nikolaidis, F

    2011-01-01

    History has shown, many times computer logs are the only information an administrator may have for an incident, which could be caused either by a malfunction or an attack. Due to the huge amount of logs that are produced from large-scale IT infrastructures, such as LHCb Online, critical information may be overlooked or simply be drowned in a sea of other messages. This clearly demonstrates the need for an automatic system for long-term maintenance and real time analysis of the logs. We have constructed a low cost, fault tolerant centralized logging system which is able to do in-depth analysis and cross-correlation of every log. This system is capable of handling O(10000) different log sources and numerous formats, while trying to keep the overhead as low as possible. It provides log gathering and management, Offline analysis and online analysis. We call Offline analysis the procedure of analyzing old logs for critical information, while Online analysis refer to the procedure of early alerting and reacting. ...

  8. The Accelerating Growth of Online Social Systems

    CERN Document Server

    Wu, L; Lei, K; Mo, Q; Zhu, J J

    2011-01-01

    Research on the growth of online social systems not only is interesting in its own right, but also yields insights for website management and web crawling. Traditional models of growth of online systems can be divided between linear and nonlinear versions. Linear models, including the BA model, assume that the average activity of users in a system is a constant independent of system size. Hence the total activity is a linear function of the system size. On the contrary, nonlinear models suggest that the average activity is affected by the system size and the total activity is a nonlinear function of the system size. In the current study, we obtain supporting evidence for the nonlinear growth assumption from data on Internet users'file sharing and blogging behavior. We find that there is a power law relationship between the total activity F and the system size P, which can be expressed as F ~ P^gamma (gamma> 1). We call this pattern accelerating growth and attribute it to time-variant inequality in individual ...

  9. Verifying Functions in Online Stock Trading Systems

    Institute of Scientific and Technical Information of China (English)

    Yu-Yue Du; Chang-Jun Jiang

    2004-01-01

    Temporal colored Petri nets, an extension of temporal Petri nets, are introduced in this paper. It can distinguish the personality of individuals (tokens), describe clearly the causal and temporal relationships between events in concurrent systems, and represent elegantly certain fundamental properties of concurrent systems,such as eventuality and fairness. The use of this method is illustrated with an example of modeling and formal verification of an online stock trading system. The functional correctness of the modeled system is formally verified based on the temporal colored Petri net model and temporal assertions. Also, some main properties of the system are analyzed. It has been demonstrated sufficiently that temporal colored Petri nets can verify efficiently some time-related properties of concurrent systems, and provide both the power of dynamic representation graphically and the function of logical inference formally. Finally, future work is described.

  10. Extracting the information backbone in online system.

    Science.gov (United States)

    Zhang, Qian-Ming; Zeng, An; Shang, Ming-Sheng

    2013-01-01

    Information overload is a serious problem in modern society and many solutions such as recommender system have been proposed to filter out irrelevant information. In the literature, researchers have been mainly dedicated to improving the recommendation performance (accuracy and diversity) of the algorithms while they have overlooked the influence of topology of the online user-object bipartite networks. In this paper, we find that some information provided by the bipartite networks is not only redundant but also misleading. With such "less can be more" feature, we design some algorithms to improve the recommendation performance by eliminating some links from the original networks. Moreover, we propose a hybrid method combining the time-aware and topology-aware link removal algorithms to extract the backbone which contains the essential information for the recommender systems. From the practical point of view, our method can improve the performance and reduce the computational time of the recommendation system, thus improving both of their effectiveness and efficiency.

  11. Extracting the information backbone in online system

    CERN Document Server

    Zhang, Qian-Ming; Shang, Ming-Sheng

    2013-01-01

    Information overload is a serious problem in modern society and many solutions such as recommender system have been proposed to filter out irrelevant information. In the literature, researchers mainly dedicated to improve the recommendation performance (accuracy and diversity) of the algorithms while overlooked the influence of topology of the online user-object bipartite networks. In this paper, we find that some information provided by the bipartite networks is not only redundant but also misleading. With such "less can be more" feature, we design some algorithms to improve the recommendation performance by eliminating some links from the original networks. Moreover, we propose a hybrid method combining the time-aware and topology-aware link removal algorithms to extract the backbone which contains the essential information for the recommender systems. From the practical point of view, our method can improve the performance and reduce the computational time of the recommendation system, thus improve both of...

  12. Human behavior in online social systems

    Science.gov (United States)

    Grabowski, A.

    2009-06-01

    We present and study data concerning human behavior in four online social systems: (i) an Internet community of friends of over 107 people, (ii) a music community website with over 106 users, (iii) a gamers’ community server with over 5 × 106 users and (iv) a booklovers’ website with over 2.5 × 105 users. The purpose of those systems is different; however, their properties are very similar. We have found that the distribution of human activity (e.g., the sum of books read or songs played) has the form of a power law. Moreover, the relationship between human activity and time has a power-law form, too. We present a simple interest-driven model of the evolution of such systems which explains the emergence of two scaling regimes.

  13. Integrated Online Library Systems: Perspectives, Perceptions, and Practicalities.

    Science.gov (United States)

    De Gennaro, Richard

    1985-01-01

    Discussion of information and misinformation about integrated online library systems highlights capabilities and functions that should be offered by an integrated system, practicalities of purchasing a system, visions versus reality, library versus information automation, origins of integrated online systems in the 1960s and 1970s, and future…

  14. Health Professionals' Use of Online Information Retrieval Systems and Online Evidence.

    Science.gov (United States)

    Lialiou, Paschalina; Pavlopoulou, Ioanna; Mantas, John

    2016-01-01

    Across-sectional survey was designed to determine health professionals' awareness and usage of online evidence retrieval systems in clinical practice. A questionnaire was used to measure professionals' behavior and utilization of online evidences, as well as, reasons and barriers on information retrieval. 439 nurses and physicians from public and private hospitals in Greece formulate the study's sample. The two most common reasons that individuals are using online information systems were for writing scientific manuscripts or filling a knowledge gap. A positive correlation was found between participants with postgraduate studies and information system usage. The majority of them (90,6%) believe that online information systems improves patient care and 67,6% of them had their own experiences on this. More support is needed to nurses and physicians in order to use the online evidence and as a result to improve the provided care and practices.

  15. GEO600 Online Detector Characterization System

    CERN Document Server

    Balasubramanian, R; Churches, D; Cokelaer, T

    2005-01-01

    A world-wide network of interferometric gravitational wave detectors is currently operational. The detectors in the network are still in their commissioning phase and are expected to achieve their design sensitivity over the next year or so. Each detector is a complex instrument involving many subsystems and each subsystem is a source of noise at the output of the detector. Therefore, in addition to recording the main gravitational wave data channel at the output of the interferometer, the state of each detector subsystem is monitored and recorded. This subsidiary data is both large in volume as well as complex in nature. We require an online monitoring and analysis tool which can process all the data channels for various noise artefacts and summarize the results of the analysis in a manner that can be accessed and interpreted conveniently. In this paper we describe the GEO600 Online Detector Characterization System (GODCS), which is the tool that is being used to monitor the output of the GEO600 gravitationa...

  16. Information Fusion of Online Oil Monitoring System Using Multiple Sensors

    Institute of Scientific and Technical Information of China (English)

    高慧良; 周新聪; 程海明; 赵春华; 严新平

    2004-01-01

    Machine lubrication contains abundant information on the equipment operation.Nowadays, most measuring methods are based on offline sampling or on online measuring with a single sensor.An online oil monitoring system with multiple sensors was designed.The measurement data was processed with a fuzzy intelligence system.Information from integrated sensors in an oil online monitoring system was evaluated using fuzzy logic.The analyses show that the multiple sensors evaluation results are more reliable than online monitoring systems with single sensors.

  17. Preparing for the Use of Classification in Online Cataloging Systems and in Online Catalogs.

    Science.gov (United States)

    Cochrane, Pauline A.; Markey, Karen

    1985-01-01

    Presents overview of library classification and automation (1940-84), including use of Dewey Decimal and Library of Congress classification in online cataloging systems. Highlights include classification number access in existing online catalogs, functions of classification records, specifications for authority file records, and the nature of…

  18. Accounting for User Diversity in Configuring Online Systems.

    Science.gov (United States)

    Woolliams, Peter; Gee, David

    1992-01-01

    Discusses cultural diversity in human-computer interactions and in the design of online systems. Topics addressed include cognitive psychology; North American and European ethnocentricity; online systems and their organizational setting; models for organization culture; corporate culture; international systems and country-specific cultures; and…

  19. Extending TAM for Online Learning Systems: An Intrinsic Motivation Perspective

    Institute of Scientific and Technical Information of China (English)

    ZHANG Sheng; ZHAO Jue; TAN Weiwei

    2008-01-01

    To get a better understanding of user behavior towards online learning systems, the technology acceptance model (TAM) was extended to include an intrinsic motivational factor. An online survey posted on a campus BBS was conducted to collect research data with a total of 121 usable responses. The results support the motivational model and show that the explained variance of online learning system use behavior is 71.3% higher than that of the original TAM explanation.

  20. Online Interactive Home Work Grading System

    Directory of Open Access Journals (Sweden)

    John JENQ

    2006-08-01

    Full Text Available In recent years, World Wide Web usage for teaching and learning has increased rapidly. At the same time, the traditional paper based grading of home works have also not changed. Recently there have been many researches on automated and intelligent grading. Clearly an online grading system would be a highly desirable addition to the educational tool-kit, particularly if it can provide less costly and more effective outcome. To facilitate the student and faculties in submitting and grading their home works, a new, interactive and adaptable approach has been implemented. The unique feature of this research is to allow the grader to mark over the assignment submitted and to add comments to it. Common errors committed are recorded and is used to recommend the instructor to review certain topics which corresponds to the high error percentage. The system has been developed by making use of free distribution of software products available for the public. Based upon our experience we offer suggestions for improving the system to make it an adaptive system

  1. Online Interactive Home Work Grading System

    Directory of Open Access Journals (Sweden)

    John JENQ

    2006-08-01

    Full Text Available In recent years, World Wide Web usage for teaching and learning has increased rapidly. At the same time, the traditional paper based grading of home works have also not changed. Recently there have been many researches on automated and intelligent grading. Clearly an online grading system would be a highly desirable addition to the educational tool-kit, particularly if it can provide less costly and more effective outcome. To facilitate the student and faculties in submitting and grading their home works, a new, interactive and adaptable approach has been implemented. The unique feature of this research is to allow the grader to mark over the assignment submitted and to add comments to it. Common errors committed are recorded and is used to recommend the instructor to review certain topics which corresponds to the high error percentage. The system has been developed by making use of free distribution of software products available for the public. Based upon our experience we offer suggestions for improving the system to make it an adaptive system

  2. Properties of on-line social systems

    Science.gov (United States)

    Grabowski, A.; Kruszewska, N.; Kosiński, R. A.

    2008-11-01

    We study properties of five different social systems: (i) internet society of friends consisting of over 106 people, (ii) social network consisting of 3 × 104 individuals, who interact in a large virtual world of Massive Multiplayer Online Role Playing Games (MMORPGs), (iii) over 106 users of music community website, (iv) over 5 × 106 users of gamers community server and (v) over 0.25 × 106 users of books admirer website. Individuals included in large social network form an Internet community and organize themselves in groups of different sizes. The destiny of those systems, as well as the method of creating of new connections, are different, however we found that the properties of these networks are very similar. We have found that the network components size distribution follow the power-law scaling form. In all five systems we have found interesting scaling laws concerning human dynamics. Our research has shown how long people are interested in a single task, how much time they devote to it and how fast they are making friends. It is surprising that the time evolution of an individual connectivity is very similar in each system.

  3. Extracting the information backbone in online system.

    Directory of Open Access Journals (Sweden)

    Qian-Ming Zhang

    Full Text Available Information overload is a serious problem in modern society and many solutions such as recommender system have been proposed to filter out irrelevant information. In the literature, researchers have been mainly dedicated to improving the recommendation performance (accuracy and diversity of the algorithms while they have overlooked the influence of topology of the online user-object bipartite networks. In this paper, we find that some information provided by the bipartite networks is not only redundant but also misleading. With such "less can be more" feature, we design some algorithms to improve the recommendation performance by eliminating some links from the original networks. Moreover, we propose a hybrid method combining the time-aware and topology-aware link removal algorithms to extract the backbone which contains the essential information for the recommender systems. From the practical point of view, our method can improve the performance and reduce the computational time of the recommendation system, thus improving both of their effectiveness and efficiency.

  4. Extracting the Information Backbone in Online System

    Science.gov (United States)

    Zhang, Qian-Ming; Zeng, An; Shang, Ming-Sheng

    2013-01-01

    Information overload is a serious problem in modern society and many solutions such as recommender system have been proposed to filter out irrelevant information. In the literature, researchers have been mainly dedicated to improving the recommendation performance (accuracy and diversity) of the algorithms while they have overlooked the influence of topology of the online user-object bipartite networks. In this paper, we find that some information provided by the bipartite networks is not only redundant but also misleading. With such “less can be more” feature, we design some algorithms to improve the recommendation performance by eliminating some links from the original networks. Moreover, we propose a hybrid method combining the time-aware and topology-aware link removal algorithms to extract the backbone which contains the essential information for the recommender systems. From the practical point of view, our method can improve the performance and reduce the computational time of the recommendation system, thus improving both of their effectiveness and efficiency. PMID:23690946

  5. Malaysian Education Index (MEI): An Online Indexing and Repository System

    Science.gov (United States)

    Kabilan, Muhammad Kamarul; Ismail, Hairul Nizam; Yaakub, Rohizani; Yusof, Najeemah Mohd; Idros, Sharifah Noraidah Syed; Umar, Irfan Naufal; Arshad, Muhammad Rafie Mohd.; Idrus, Rosnah; Rahman, Habsah Abdul

    2010-01-01

    This "Project Sheet" describes an on-going project that is being carried out by a group of educational researchers, computer science researchers and librarians from Universiti Sains Malaysia, Penang. The Malaysian Education Index (MEI) has two main functions--(1) Online Indexing System, and (2) Online Repository System. In this brief…

  6. Security analysis of electronic voting and online banking systems

    OpenAIRE

    2007-01-01

    The main focus of this dissertation is on security analysis of electronic voting and online banking systems. Six papers form the basis of the thesis and include the following topics: a model for analysis of voting systems, a case study where we apply the proposed model, a new scheme for remote electronic voting, and three case studies of commercial online banking solutions in Norway.

  7. Planning for Online Education: A Systems Model

    Science.gov (United States)

    Picciano, Anthony G.

    2015-01-01

    The purpose of this article is to revisit the basic principles of technology planning as applied to online education initiatives. While not meant to be an exhaustive treatment of the topic, the article is timely because many colleges and universities are considering the development and expansion of online education as part of their planning…

  8. MOIDSS?- Mobile Online Intelligent Decision Support System Project

    Data.gov (United States)

    National Aeronautics and Space Administration — GRID has had a successfully completed Phase I 'Mobile Online Intelligent Decision Support System' (MOIDSS). The system developed into a total solution that supports...

  9. Empirical Analysis of the Online Rating Systems

    CERN Document Server

    Lu, Xin-Yi; Guo, Qiang; Liu, Jian-Guo

    2015-01-01

    This paper is to analyze the properties of evolving bipartite networks from four aspects, the growth of networks, the degree distribution, the popularity of objects and the diversity of user behaviours, leading a deep understanding on the empirical data. By empirical studies of data from the online bookstore Amazon and a question and answer site Stack Overflow, which are both rating bipartite networks, we could reveal the rules for the evolution of bipartite networks. These rules have significant meanings in practice for maintaining the operation of real systems and preparing for their future development. We find that the degree distribution of users follows a power law with an exponential cutoff. Also, according to the evolution of popularity for objects, we find that the large-degree objects tend to receive more new ratings than expected depending on their current degrees while the small-degree objects receive less ratings in terms of their degrees. Moreover, the user behaviours show such a trend that the l...

  10. A Context Awareness System for Online Learning: Design Based Research

    Science.gov (United States)

    Laffey, James; Amelung, Chris; Goggins, Sean

    2009-01-01

    A design based research strategy examining the impressions and behavior of members of courses taught entirely online is used for refining a context-aware activity notification system (CANS). The findings show that CANS must address substantial variety in courses and members while also fitting with multitasking between online and real world…

  11. Distributed Online Judge System for Interactive Theorem Provers

    Science.gov (United States)

    Mizuno, Takahisa; Nishizaki, Shin-ya

    2014-03-01

    In this paper, we propose a new software design of an online judge system for interactive theorem proving. The distinctive feature of this architecture is that our online judge system is distributed on the network and especially involves volunteer computing. In volunteers' computers, network bots (software robots) are executed and donate computational resources to the central host of the online judge system. Our proposed design improves fault tolerance and security. We gave an implementation to two different styles of interactive theorem prover, Coq and ACL2, and evaluated our proposed architecture. From the experiment on the implementation, we concluded that our architecture is efficient enough to be used practically.

  12. Distributed Online Judge System for Interactive Theorem Provers

    Directory of Open Access Journals (Sweden)

    Mizuno Takahisa

    2014-03-01

    Full Text Available In this paper, we propose a new software design of an online judge system for interactive theorem proving. The distinctive feature of this architecture is that our online judge system is distributed on the network and especially involves volunteer computing. In volunteers’ computers, network bots (software robots are executed and donate computational resources to the central host of the online judge system. Our proposed design improves fault tolerance and security. We gave an implementation to two different styles of interactive theorem prover, Coq and ACL2, and evaluated our proposed architecture. From the experiment on the implementation, we concluded that our architecture is efficient enough to be used practically.

  13. The Impact of Comments and Recommendation System on Online Shopper Buying Behaviour

    Directory of Open Access Journals (Sweden)

    Hui Chen

    2012-02-01

    Full Text Available The author aims at studying the influence of comments and recommendation on online shopping behaviours. With 285 study subjects, the author used experimental research design to study comments and recommendation system on online shopping experience, online shopping satisfaction, online shopping intention and items chosen. The data is analyzed by SPSS 15.0 and LISREL 8.8. The results show that comments and recommendation influence online shopping experience, online shopping satisfaction and online shopping intention directly. Online shopping experience and online shopping satisfaction influence online shopping intention significantly. There is remarkable positive relation between online shopping intention and items chosen.

  14. Model Updating in Online Aircraft Prognosis Systems Project

    Data.gov (United States)

    National Aeronautics and Space Administration — The objective of this research is to develop algorithms for online health monitoring and prognostics (prediction of the remaining life of a component or system) in...

  15. Beach Advisory and Closing Online Notification (BEACON) system

    Data.gov (United States)

    U.S. Environmental Protection Agency — Beach Advisory and Closing Online Notification system (BEACON) is a colletion of state and local data reported to EPA about beach closings and advisories. BEACON is...

  16. Online contact impedance identification for robotic systems

    NARCIS (Netherlands)

    Haddadi, Amir; Hashtrudi-Zaad, Keyvan

    2008-01-01

    In this paper, we study the performance of various algorithms for fast online identification of environment impedance during robotic contact tasks. In particular, we evaluate and compare algorithms with regard to their convergence rate, computational complexity and sensitivity to noise for different

  17. Online Reputation Systems in Web 2.0 Era

    Science.gov (United States)

    Zheng, Weijun; Jin, Leigh

    Web 2.0 has transformed how reputation systems are designed and used by the Web. Based on a thorough review of the existing online reputation systems and their challenges in use, this paper studied a case of Amazon’s reputation system for the impacts of Web 2.0. Through our case study, several distinguished features of new generation reputation systems are noted including multimedia feedbacks, reviewer centered, folksonomy, community contribution, comprehensive reputation, dynamic and interactive system etc. These new developments move towards a relatively trustworthy and reliable online reputation system in the Web 2.0 era.

  18. A PEDAGOGICAL CRITICAL REVIEW OF ONLINE LEARNING SYSTEM

    Directory of Open Access Journals (Sweden)

    Dwi SULISWORO

    2016-08-01

    Full Text Available E-learning which have various shapes such as blog, classroom learning which is facilitated the World Wide Web; a mix of online instruction and meeting the class known as additional models or hybrid; or the full online experience, where all assessment and instruction is done electronically. Object relationship of learning and constructivist educational philosophy and confirmed that online learning has the orientation which is basically a constructivist ideology, where the combination of some of the knowledge is an inquiry-oriented activities and authentic and also promote the progress of the construction of new knowledge. Description of the online learning system in theory and practice can be illustrated in a few examples that have been found in the research that has been done and found new discoveries obtained in the study, but not everything can be done because of several factors. Please note that the components in the online learning system can serve as a learning system which is very strong influence on learning in the class. The objective of this research is to a pedagogical critical review of online learning system in theory and practice that can be applied by teachers in the teaching process in the classroom. The results obtained in this study were teachers and students need extra effort to make online classes and virtual. Further research is needed on appropriate strategies in order to determine the next result is more useful. There some advices for any studies that discuss online learning system are done in certain areas, namely the use of electricity and other disciplines such as social and humanities.

  19. Development of an online preparation system for multitracer solutions

    Energy Technology Data Exchange (ETDEWEB)

    Kasamatsu, Yoshitaka [Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043 (Japan); Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195 (Japan)], E-mail: kasamatsu.yoshitaka@jaea.go.jp; Yatsukawa, Makoto; Sato, Wataru; Ninomiya, Kazuhiko; Ohki, Toshihiro; Takahashi, Naruto [Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043 (Japan); Yokoyama, Akihiko [Graduate School of Natural Science and Technology, Kanazawa University, Kanazawa, Ishikawa 920-1192 (Japan); Kikunaga, Hidetoshi [Graduate School of Natural Science and Technology, Kanazawa University, Kanazawa, Ishikawa 920-1192 (Japan); RIKEN, Wako, Saitama 351-0198 (Japan); Kinoshita, Norikazu [Graduate School of Natural Science and Technology, Kanazawa University, Kanazawa, Ishikawa 920-1192 (Japan); Shibata, Sadao [Nuclear Safety Technology Center, Rokkasho, Aomori 039-3212 (Japan); Shinohara, Atsushi [Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043 (Japan)

    2008-03-15

    We have developed a new target-irradiation system for the online preparation of multitracer solutions, where the nuclear-reaction products recoiling out of the target are directly implanted in a solvent as a liquid catcher. A rapid online transportation of the solution has enabled highly efficient recovery of the multitracer solutions having even short-lived radioactive isotopes without any chemical treatments. It has been suggested that the collection efficiency depends on the chemical properties of the recoil elements.

  20. Residency Applicants Prefer Online System for Scheduling Interviews

    Directory of Open Access Journals (Sweden)

    Wills, Charlotte

    2015-03-01

    Full Text Available Introduction: Residency coordinators may be overwhelmed when scheduling residency interviews. Applicants often have to coordinate interviews with multiple programs at once, and relying on verbal or email confirmation may delay the process. Our objective was to determine applicant mean time to schedule and satisfaction using online scheduling. Methods: This pilot study is a retrospective analysis performed on a sample of applicants offered interviews at an urban county emergency medicine residency. Applicants were asked their estimated time to schedule with the online system compared to their average time using other methods. In addition, they were asked on a five-point anchored scale to rate their satisfaction. Results: Of 171 applicants, 121 completed the survey (70.8%. Applicants were scheduling an average of 13.3 interviews. Applicants reported scheduling interviews using the online system in mean of 46.2 minutes (median 10, range 1-1800 from the interview offer as compared with a mean of 320.2 minutes (median 60, range 3-2880 for other programs not using this system. This difference was statistically significant. In addition, applicants were more likely to rate their satisfaction using the online system as “satisfied” (83.5% vs 16.5%. Applicants were also more likely to state that they preferred scheduling their interviews using the online system rather than the way other programs scheduled interviews (74.2% vs 4.1% and that the online system aided them coordinating travel arrangements (52.1% vs 4.1%. Conclusion: An online interview scheduling system is associated with higher satisfaction among applicants both in coordinating travel arrangements and in overall satisfaction. [West J Emerg Med. 2015;16(2:352-354.

  1. A Conceptual Framework for Evolving, Recommender Online Learning Systems

    Science.gov (United States)

    Peiris, K. Dharini Amitha; Gallupe, R. Brent

    2012-01-01

    A comprehensive conceptual framework is developed and described for evolving recommender-driven online learning systems (ROLS). This framework describes how such systems can support students, course authors, course instructors, systems administrators, and policy makers in developing and using these ROLS. The design science information systems…

  2. A Distributed Online Custom System for Knitted Sweater

    Institute of Scientific and Technical Information of China (English)

    GUO Fang; XU Ling; SHI Chuan

    2007-01-01

    A new application of Sun ONE architecture-an online custom system for Knitted Sweaters is presented, which links sweater design, manufacturing and sales in different places to share information through the Internet. The framework and characteristics of J2EE and Sun ONE are analyzed. Having studied the requirements of the online custom system for knitted sweaters, the paper presents a detailed and original system design based on J2EE technology and Web Services. This paper also gives descriptions on how to assemble and deploy the whole system under the Sun ONE architecture.

  3. On-line Payment System Survey – eCash

    Directory of Open Access Journals (Sweden)

    Marius Popa

    2009-12-01

    Full Text Available The paper presents the main aspects regarding an on-line payment system. Some characteristics of such system are presented and an existing system is analyzed. On its fundamental sense, the electronic commerce is a concept that represents the purchase and sale process or exchange of products, services, information, using o computer network, inclusively the Internet. In the most part of the cases, the electronic commerce imply on-line payments that lead to creation of some kinds of electronic money and some specific payment systems. There are described the some electronic payment mechanisms and the architecture and the functions of the on-line payment system E-Cash are depicted.

  4. An intelligent online fault diagnostic scheme for nonlinear systems

    Institute of Scientific and Technical Information of China (English)

    Hing Tung MOK; Che Wai CHAN; Zaiyue YANG

    2008-01-01

    An online fault diagnostic scheme for nonlinear systems based on neurofuzzy networks is proposed in this paper.The scheme involves two stages.In the first stage,the nonlinear system is approximated by a neurofuzzy network,which is trained offline from data obtained during the normal operation of the system.In the second stage,residual is generated online from this network and is modelled by another neurofuzzy network trained online.Fuzzy rules are extracted from this network,and are compared with those in the fault database obmined under different faulty operations,from which faults are diagnosed.The performance of the proposed intelligent fault scheme is illustrated using a two.tank water level control system under different faulty conditions.

  5. The CAPA Integrative Online System for College Major Exploration

    Science.gov (United States)

    Betz, Nancy E.; Borgen, Fred H.

    2010-01-01

    Career assessment has advanced on several fronts, enabling a CAPA integrative online system for exploring college majors with unprecedented precision and utility. The key inventories in the system are the CAPA Confidence Inventory (CCI), with its 6 general and 27 specific scales, and the CAPA Interest Inventory, with its 6 general and 35 specific…

  6. COSMOS (County of San Mateo Online System). A Searcher's Manual.

    Science.gov (United States)

    San Mateo County Superintendent of Schools, Redwood City, CA. Educational Resources Center.

    Operating procedures are explained for COSMOS (County of San Mateo Online System), a computerized information retrieval system designed for the San Mateo Educational Resources Center (SMERC), which provides interactive access to both ERIC and a local file of fugitive documents. COSMOS hardware and modem compatibility requirements are reviewed,…

  7. Authentication in Online Banking Systems through Quantum Cryptography

    Directory of Open Access Journals (Sweden)

    Anand Sharma

    2013-06-01

    Full Text Available The new information technology is becoming an important factor in the future development of financial services industry, and especially banking industry. Growing international trading and problems in transferring money have motivated researchers to introduce a new structure. Online banking is the newest delivery channel for retail banking services. Online banking facilitated by various Electronic Commerce technologies, has helped commercial banks to stay competitive through productivity gains, transaction cost reduction and customer service improvement. Security for online banking has changed considerably during the relatively short period that online banking has been in use. In particular, authentication in the early implementations was, and sometimes still is, vulnerable to various attacks such as phishing. It is known that the quantum cryptography protocols are able to detect immediately any attempt to attack the key exchange and the authentication process. This paper presentsan introduction of online banking and quantum cryptography. In this paper we are proposing a model for authentication in online banking system with quantum cryptography.

  8. The Impact of Comments and Recommendation System on Online Shopper Buying Behaviour

    OpenAIRE

    Hui Chen

    2012-01-01

    The author aims at studying the influence of comments and recommendation on online shopping behaviours. With 285 study subjects, the author used experimental research design to study comments and recommendation system on online shopping experience, online shopping satisfaction, online shopping intention and items chosen. The data is analyzed by SPSS 15.0 and LISREL 8.8. The results show that comments and recommendation influence online shopping experience, online shopping satisfaction and onl...

  9. The Impact of Comments and Recommendation System on Online Shopper Buying Behaviour

    OpenAIRE

    Hui Chen

    2012-01-01

    The author aims at studying the influence of comments and recommendation on online shopping behaviours. With 285 study subjects, the author used experimental research design to study comments and recommendation system on online shopping experience, online shopping satisfaction, online shopping intention and items chosen. The data is analyzed by SPSS 15.0 and LISREL 8.8. The results show that comments and recommendation influence online shopping experience, online shopping satisfaction and onl...

  10. Online Palmprint Identification System for Civil Applications

    Institute of Scientific and Technical Information of China (English)

    David Zhang; Guang-Ming Lu; Adams Wai-Kin Kong; Michael Wong

    2005-01-01

    In this paper, a novel biontetric identification system is presented to identify a person's identity by his/her palmprint. In contrast to existing palmprint systems for criminal applications, the proposed system targets at the civil applications, which require identifying a person in a large database with high accuracy in real-time. The system is constituted by four major components: User Interface Module, Acquisition Module, Recognition Module and External Module. More than 7,000 palmprint images have been collected to test the performance of the system. The system can identify 400 palms with a low false acceptance rate, 0.02%, and a high genuine acceptance rate, 98.83%. For verification, the system can operate at a false acceptance rate, 0.017% and a false rejection rate, 0.86%. The execution time for the whole process including image collection, preprocessing, feature extraction and matching is less than 1 second.

  11. Online Delay-Evaluation Approach in Networked Control Systems

    Institute of Scientific and Technical Information of China (English)

    魏震; 马向华; 谢剑英

    2003-01-01

    This paper presents an online evaluation approach of time delays for networked control systems (NCS), which characterizes the time delays without any synchronized clock in the network and any assumptions of time delays. With this approach, an optimal control scheme based on the approach is designed to achieve the desired performance despite the uncertain delays in the system. The experimental results based on CANbus illustrate the effectiveness of the proposed control design and satisfactory performance of the closed-loop system.

  12. Intelligent Multi-Agent Online Examination System

    OpenAIRE

    Anaekwe, Jane Chioma

    2015-01-01

    ABSTRACT: Examinations are essential tools in an education system and are used to test the knowledge, learning capabilities, and progress of a student in a specific domain. Due to its importance in an academic system, it is therefore vital to have an examination system that is fair and efficient. The traditional paper-based examinations are known to have various constraints such as, their time consuming nature, delays in declaration of results, human errors and tedious evaluation/management o...

  13. An Online Inquiry Instructional System for Environmental Issues.

    Science.gov (United States)

    Bodzin, Alec M; Park, John C.

    1999-01-01

    Illustrates how the Dick and Carey systems approach model (1990) can still be used as part of the instructional design and developmental process in an inquiry-based online constructivist learning environment. Focuses on the Shell Island Dilemma, a scientific inquiry simulation on the Carolina Coastal Science Web site. (AEF)

  14. An on-line gasoline blending system put into production

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    @@ Anew system for online gasoline blending, which was developed by researchers from the CAS Institute of Automation (CASIA), has been put into production at China Petrochemical Corporation (SINOPEC) and PetroChina Corporation. It is expected to thoroughly renovate the technology in this regard and achieve maximal economic benefits in oil production stage.

  15. Beach Advisory and Closing Online Notification (BEACON) system

    Science.gov (United States)

    Beach Advisory and Closing Online Notification system (BEACON) is a colletion of state and local data reported to EPA about beach closings and advisories. BEACON is the public-facing query of the Program tracking, Beach Advisories, Water quality standards, and Nutrients database (PRAWN) which tracks beach closing and advisory information.

  16. Curriculum Online Review System: Proposing Curriculum with Collaboration

    Science.gov (United States)

    Rhinehart, Marilyn; Barlow, Rhonda; Shafer, Stu; Hassur, Debby

    2009-01-01

    The Curriculum Online Review System (CORS) at Johnson County Community College (JCCC) uses SharePoint as a Web platform for the JCCC Curriculum Proposals Process. The CORS application manages proposals throughout the approval process using collaboration tools and workflows to notify all stakeholders. This innovative new program has changed the way…

  17. Performance analysis of online health care system

    African Journals Online (AJOL)

    user

    that concerns with the doctors, hospitals, laboratory tests etc. .... As per the application, the system will generate unique registration number/ patient Id for ..... Cognitive Task Analysis, International Journal of Medical Informatics, Vol. 79, No.

  18. Study of Gamification Effectiveness in Online e-Learning Systems

    Directory of Open Access Journals (Sweden)

    Ilya V. Osipov

    2015-02-01

    Full Text Available Online distance e-learning systems allow introducing innovative methods in pedagogy, along with studying their effectiveness. Assessing the system effectiveness is based on analyzing the log files to track the studying time, the number of connections, and earned game bonus points. This study is based on an example of the online application for practical foreign language speaking skills training between random users, which select the role of a teacher or a student on their own. The main features of the developed system include pre-defined synchronized teaching and learning materials displayed for both participants, along with user motivation by means of gamification. The actual percentage of successful connects between specifically unmotivated and unfamiliar with each other users was measured. The obtained result can be used for gauging the developed system success and the proposed teaching methodology in general.

  19. Cloud Computing Platform for an Online Model Library System

    Directory of Open Access Journals (Sweden)

    Mingang Chen

    2013-01-01

    Full Text Available The rapid developing of digital content industry calls for online model libraries. For the efficiency, user experience, and reliability merits of the model library, this paper designs a Web 3D model library system based on a cloud computing platform. Taking into account complex models, which cause difficulties in real-time 3D interaction, we adopt the model simplification and size adaptive adjustment methods to make the system with more efficient interaction. Meanwhile, a cloud-based architecture is developed to ensure the reliability and scalability of the system. The 3D model library system is intended to be accessible by online users with good interactive experiences. The feasibility of the solution has been tested by experiments.

  20. Expert system for online surveillance of nuclear reactor coolant pumps

    Energy Technology Data Exchange (ETDEWEB)

    Gross, K.C.; Singer, R.M.; Humenik, K.E.

    1992-12-31

    This report describes an expert system for online surveillance of nuclear reactor coolant pumps. This system provides a means for early detection of pump or sensor degradation. Degradation is determined through the use of a statistical analysis technique, sequential probability ratio test, applied to information from several sensors which are responsive to differing physical parameters. The results of sequential testing of the data provide the operator with an early warning of possible sensor or pump failure.

  1. Two Types of Designs for On-Line Circulation Systems

    Directory of Open Access Journals (Sweden)

    Rob McGee

    1972-09-01

    Full Text Available On-line circulation systems divide into two types. One type contains records only for charged or otherwise absent items. The other contains a file of records for all titles or volumes in the library collection, regardless of their circulation status. This paper traces differences between the two types, examining different kinds of files and terminals, transaction evidence, the quality of bibliographic data, querying, and the possibility of functions outside circulation. Aspects of both operational and potential systems are considered.

  2. Optimization of Online Judge Systems%Online Judge系统的优化

    Institute of Scientific and Technical Information of China (English)

    庄奇东; 王键闻; 张楠; 张爽; 任娜

    2011-01-01

    This paper describes the application and performance optimization of Online Judge Systems in terms of web page and database caching, server architecture, testing and processing rules in multi-core environment, front-end asynchronous response, data table design, cross-platform support, source code plagiarism detection, automatic generation of test cases, etc., which enhances the evaluation efficiency while reducing the number of servers, saving operating coses. And then, it discusses the general idea on die implementation of a unified test platform for intelligent optimization algorithms.%从Web页面和数据库缓存、服务器架构、多核评测处理规则、前端异步响应、数据表设计、跨平台支持、源代码抄袭检测、测试用例自动生成等方面优化了Online Judge系统,使得评测效率提高的同时减少了服务器数量,节约了运行成本.最后讨论了基于Online Judge系统实现智能优化算法的统一测试平台的方法.

  3. Event streaming in the online system

    CERN Document Server

    Klous, S; The ATLAS collaboration

    2010-01-01

    The Large Hadron Collider (LHC), currently in operation at CERN in Geneva, is a circular 27-kilometer-circumference machine, accelerating bunches of protons in opposite directions. The bunches will cross at four different interaction points with a bunch-crossing frequency of 40MHz. ATLAS, the largest LHC experiment, registers the signals induced by particles traversing the detector components on each bunch crossing. When this happens a total of around 1.5MB of data are collected. This results in a data rate of around 60 TB/s flowing out of the detector. Note that the available event storage space is limited to about 6 PB per year. With an operational period of about 20 million seconds per year, this requires a data reduction factor of 200:000 in the trigger and data acquisition (TDAQ) system. Events included in the recording rate budget are already subdivided and organized by ATLAS during data acquisition. So, the TDAQ system does not only take care of data reduction, but also organizes the collected events. ...

  4. Virtual Social Networks Online and Mobile Systems

    Directory of Open Access Journals (Sweden)

    Maytham Safar

    2009-01-01

    Full Text Available Location-based applications are one of the most anticipated new segments of the mobile industry. These new applications are enabled by GPS-equipped phones (e.g., emergency applications, buddy finders, games, location-based advertising, etc.. These services are designed to give consumers instant access to personalized, local content of their immediate location. Some applications couple LBS with notification services, automatically alerting users when they are close to a pre-selected destination. With the advances in the Internet and communications/mobile technology, it became vital to analyze the effect of such technologies on human communications. This work studies how humans can construct social networks as a method for group communications using the available technologies. We constructed and analyzed a friends network using different parameters. The parameters that were calculated to analyze the network are the distribution sequence, characteristic path length, clustering coefficient and centrality measures. In addition, we built a PDA application that implements the concept of LBS using two system modules. In the first module, we have developed an application for entertainment purpose; an application program which enables end users to send their birth year and get their horoscope in return. The second part of the project was, to build an application, which helps people to stay in touch with their friends and family members (Find Friend. It helps users to find which of their buddies are within the same area they are in.

  5. Objective Evaluation in an Online Geographic Information System Certificate Program

    Directory of Open Access Journals (Sweden)

    Scott L. WALKER

    2005-01-01

    Full Text Available Objective Evaluation in an Online Geographic Information System Certificate Program Asst. Professor. Dr. Scott L. WALKER Texas State University-San Marcos San Marcos, Texas, USA ABSTRACT Departmental decisions regarding distance education programs can be subject to subjective decision-making processes influenced by external factors such as strong faculty opinions or pressure to increase student enrolment. This paper outlines an evaluation of a departmental distance-education program. The evaluation utilized several methods that strived to inject objectivity in evaluation and subsequent decision-making. A rapid multi-modal approach included evaluation methods of (1 considering the online psychosocial learning environment, (2 content analyses comparing the online version of classes to face-to-face versions, (3 cost comparisons in online vs. face-to-face classes, (4 student outcomes, (5 student retention, and (6 benchmarking. These approaches offer opportunities for departmental administrators and decision-making committees to make judgments informed by facts rather than being influenced by the emotions, beliefs, or opinions of organizational dynamics.

  6. Virtualization for the LHCb Online system

    Science.gov (United States)

    Bonaccorsi, Enrico; Brarda, Loic; Moine, Gary; Neufeld, Niko

    2011-12-01

    Virtualization has long been advertised by the IT-industry as a way to cut down cost, optimise resource usage and manage the complexity in large data-centers. The great number and the huge heterogeneity of hardware, both industrial and custom-made, has up to now led to reluctance in the adoption of virtualization in the IT infrastructure of large experiment installations. Our experience in the LHCb experiment has shown that virtualization improves the availability and the manageability of the whole system. We have done an evaluation of available hypervisors / virtualization solutions and find that the Microsoft HV technology provides a high level of maturity and flexibility for our purpose. We present the results of these comparison tests, describing in detail, the architecture of our virtualization infrastructure with a special emphasis on the security for services visible to the outside world. Security is achieved by a sophisticated combination of VLANs, firewalls and virtual routing - the cost and benefits of this solution are analysed. We have adapted our cluster management tools, notably Quattor, for the needs of virtual machines and this allows us to migrate smoothly services on physical machines to the virtualized infrastructure. The procedures for migration will also be described. In the final part of the document we describe our recent R&D activities aiming to replacing the SAN-backend for the virtualization by a cheaper iSCSI solution - this will allow to move all servers and related services to the virtualized infrastructure, excepting the ones doing hardware control via non-commodity PCI plugin cards.

  7. Online identification of nonlinear spatiotemporal systems using kernel learning approach.

    Science.gov (United States)

    Ning, Hanwen; Jing, Xingjian; Cheng, Li

    2011-09-01

    The identification of nonlinear spatiotemporal systems is of significance to engineering practice, since it can always provide useful insight into the underlying nonlinear mechanism and physical characteristics under study. In this paper, nonlinear spatiotemporal system models are transformed into a class of multi-input-multi-output (MIMO) partially linear systems (PLSs), and an effective online identification algorithm is therefore proposed by using a pruning error minimization principle and least square support vector machines. It is shown that many benchmark physical and engineering systems can be transformed into MIMO-PLSs which keep some important physical spatiotemporal relationships and are very helpful in the identification and analysis of the underlying system. Compared with several existing methods, the advantages of the proposed method are that it can make full use of some prior structural information about system physical models, can realize online estimation of the system dynamics, and achieve accurate characterization of some important nonlinear physical characteristics of the system. This would provide an important basis for state estimation, control, optimal analysis, and design of nonlinear distributed parameter systems. The proposed algorithm can also be applied to identification problems of stochastic spatiotemporal dynamical systems. Numeral examples and comparisons are given to demonstrate our results.

  8. On-line Dynamic Security Assessment in Power Systems

    DEFF Research Database (Denmark)

    Weckesser, Johannes Tilman Gabriel

    tools may no longer be feasible, since they are generally based on extensive off-line studies. A core component of an efficient on-line dynamic security assessment is a fast and reliable contingency screening. As part of this thesis a contingency screening method is developed and its performance......The thesis concerns the development of tools and methods for on-line dynamic security assessment (DSA). In a future power system with low-dependence or even independence of fossil fuels, generation will be based to a large extent on noncontrollable renewable energy sources (RES), such as wind...... and solar radiation. Moreover, ongoing research suggests that demand response will be introduced to maintain power balance between generation and consumption at all times. Due to these changes the operating point of the power system will be less predictable and today’s stability and security assessment...

  9. On-line corrosion monitoring in district heating systems

    DEFF Research Database (Denmark)

    Richter, Sonja; Thorarinsdottir, R.I.; Hilbert, Lisbeth Rischel

    2004-01-01

    complicates the chemistry of the environment. Hydrogen sulphide is present in geothermal systems and can be formed as a by-product of sulphate-reducing-bacteria (SRB). The application of electrochemical methods makes on-line monitoring possible. These methods include: Linear Polarization Resistance (LPR......), Electrochemical Noise (EN) and Zero Resistance Ammetry (ZRA). Electrochemical Resistance (ER) has also been used to measure corrosion. The method traditionally only measures corrosion off-line but with newly developed high-sensitive ER technique developed by MetriCorr in Denmark, on-line monitoring is possible......Traditionally corrosion monitoring in district heating systems has been performed offline via weight loss coupons. These measurements give information about the past and not the present situation and require long exposure time (weeks or months). The good quality of district heating medium makes...

  10. Online prediction and control in nonlinear stochastic systems

    DEFF Research Database (Denmark)

    Nielsen, Torben Skov

    2002-01-01

    of systems which are inherently non-stationary. The third part concerns the issue of predicting the power production from wind turbines in the presence of Numerical Weather Predictions (NWP) of selected climatical variables. Here the transformation through the wind turbines from (primarily) wind speed....... The papers G , H and J investigate models and methods for predicting wind power from a wind farm on basis of observations and numerical weather predictions. All three papers consider multistep prediction models, but uses di erent estimation methods as well as dierent models for the diurnal variation of wind......The present thesis consists of a summary report and ten research papers. The subject of the thesis is on-line prediction and control of non-linear and non-stationary systems based on stochastic modelling. The thesis consists of three parts where the rst part deals with on-line estimation in linear...

  11. The nested assembly of collective attention in online social systems

    CERN Document Server

    Borge-Holthoefer, Javier; Gracia-Lázaro, Carlos; Moreno, Yamir

    2015-01-01

    Online social networks have changed the way in which we communicate. These networks are characterized by a competitive information flow and a dynamic topology, where the success of a given topic or meme depends on many factors, most of which are unknown. Likely, given the many sources of information to which a typical individual is exposed, the economy of attention rules the system dynamics. Here we show, using microblogging data, that competition is minimized through consensus and that collective attention and successful topical assembly are characterized by a nested structure of the bipartite network made up by users and memes. Our results indicate that social phenomena could emerge as a result of a topological transition that minimizes modularity while maximizing the nestedness of the system, and that online social networks are comparable to an ecosystem, where generalists and specialists share resources.

  12. On-line Corrosion Monitoring in District Heating Systems

    DEFF Research Database (Denmark)

    Richter, Sonja; Thorarinsdottir, R.I.; Hilbert, Lisbeth Rischel

    2005-01-01

    The corrosion control in district heating systems is today performed primarily with control of the water quality. The corrosion rate is kept low by assuring low dissolved oxygen concentration, high pH and low conductivity. Corrosion failures can occur, e.g. as a result of unknown oxygen ingress......, precipitation of deposits or crevices. The authors describe methods used for on-line monitoring of corrosion, cover the complications and the main results of a Nordic project....

  13. Online, real-time corrosion monitoring in district heating systems

    DEFF Research Database (Denmark)

    Hilbert, Lisbeth Rischel; Thorarinsdottir, R.I.

    2005-01-01

    The corrosion control in district heating systems is today performed primarily with control of the water quality. The corrosion rate is kept low by assuring low dissolved oxygen concentration, high pH and low conductivity. Corrosion failures can occur, e.g. as a result of unknown oxygen ingress......, precipitation of deposits or crevices. The authors describe methods used for on-line monitoring of corrosion, cover the complications and the main results of a Nordic project....

  14. Planning an Integrated On-Line Library system (IOLS)

    Science.gov (United States)

    1989-03-01

    Information Technolo2gy and the Academi11c Librarv," Library Journal 109 (June 1. 1984):1204-1209. 15. Karen L. l-orniv, "Fifteen Years of Automation...Richard. "Integrated Online Library Systems: Perspectives, Percep- tions, & Practicalities." Library Journal 110 (February 1, 1985):37-40. De Gennaro...Richard. "Library Automation & Networking Perspectives on Three Decades." Library Journal 108 (1 April 1983):629-35. De Gennaro, Richard. "Shifting

  15. Online measurement system for the surface inclination of metal workpieces

    Science.gov (United States)

    Yin, Peng; Sun, Changku; Wang, Peng; Yang, Qian

    2013-12-01

    The online measurement of the metal surfaces' parameters plays an important role in many industrial fields. Because the surfaces of the machined metal pieces have the characteristics of strong reflection and high possibilities of scattered disturbing irradiation points, this paper designs an online measurement system based on the measurement principles of linear structured light to detect whether the parameters of the machined metal surfaces' height difference and inclination fulfill the compliance requirements, in which the grayscale gravity algorithm is applied to extract the sub-pixel coordinates of the center of laser, the least squares method is employed to fit the data and the Pauta criterion is utilized to remove the spurious points. The repeat accuracy of this system has been tested. The experimental results prove that the precision of inclination is 0.046° RMS under the speed of 40mm/sec, and the precision of height difference is 0.072mm RMS, which meets the design expectations. Hence, this system can be applied to online industrial detection of high speed and high precision.

  16. Online Monitor Framework for Network Distributed Data Acquisition Systems

    Science.gov (United States)

    Konno, Tomoyuki; Cabrera, Anatael; Ishitsuka, Masaki; Kuze, Masahiro; Sakamoto, Yasunobu; the Double Chooz Collaboration

    Data acquisition (DAQ) systems for recent high energy physics experiments consist of lots of subsystems distributed in the local area network. Therefore, scalability for the number of connections from subsystems and availability of access via the Internet are required. "Online monitor framework" is a general software framework for online data monitoring, which provides a way to collect monitoring information distributed in the network and pass them though the firewalls. The framework consists of two subsystems; "Monitor Sever" and "Monitor Viewer". Monitor Server is a core system of the framework. The server collects monitoring information from the DAQ subsystems to provide them to Monitor Viewer. Monitor Viewer is a graphical user interface of the monitor framework, which displays plots in itself. We adapted two types of technologies; Java and HTML5 with Google Web Toolkit, which are independent of operating systems or plugin-libraries like ROOT and contain some functionalities of communicating via the Internet and drawing graphics. The monitoring framework was developed for the Double Chooz reactor neutrino oscillation experiment but is general enough for other experiments. This document reports the structure of the online monitor framework with some examples from the adaption to the Double Chooz experiment.

  17. An Online Banking System Based on Quantum Cryptography Communication

    Science.gov (United States)

    Zhou, Ri-gui; Li, Wei; Huan, Tian-tian; Shen, Chen-yi; Li, Hai-sheng

    2014-07-01

    In this paper, an online banking system has been built. Based on quantum cryptography communication, this system is proved unconditional secure. Two sets of GHZ states are applied, which can ensure the safety of purchase and payment, respectively. In another word, three trading participants in each triplet state group form an interdependent and interactive relationship. In the meantime, trading authorization and blind signature is introduced by means of controllable quantum teleportation. Thus, an effective monitor is practiced on the premise that the privacy of trading partners is guaranteed. If there is a dispute or deceptive behavior, the system will find out the deceiver immediately according to the relationship mentioned above.

  18. Design and implementation of online automatic judging system

    Science.gov (United States)

    Liang, Haohui; Chen, Chaojie; Zhong, Xiuyu; Chen, Yuefeng

    2017-06-01

    For lower efficiency and poorer reliability in programming training and competition by currently artificial judgment, design an Online Automatic Judging (referred to as OAJ) System. The OAJ system including the sandbox judging side and Web side, realizes functions of automatically compiling and running the tested codes, and generating evaluation scores and corresponding reports. To prevent malicious codes from damaging system, the OAJ system utilizes sandbox, ensuring the safety of the system. The OAJ system uses thread pools to achieve parallel test, and adopt database optimization mechanism, such as horizontal split table, to improve the system performance and resources utilization rate. The test results show that the system has high performance, high reliability, high stability and excellent extensibility.

  19. Online damage inspection of optics for ATP system

    Science.gov (United States)

    Chen, Jing; Jiang, Yu; Mao, Yao; Gan, Xun; Liu, Qiong

    2016-09-01

    In the Electro-Optical acquisition-tracking-pointing system (ATP), the optical components will be damaged with the several influencing factors. In this situation, the rate will increase sharply when the arrival of damage to some extent. As the complex processing techniques and long processing cycle of optical components, the damage will cause the great increase of the system development cost and cycle. Therefore, it is significant to detect the laser-induced damage in the ATP system. At present, the major research on the on-line damage detection technology of optical components is for the large optical system in the international. The relevant detection systems have complicated structures and many of components, and require enough installation space reserved, which do not apply for ATP system. To solve the problem mentioned before, This paper use a method based on machine vision to detect the damage on-line for the present ATP system. To start with, CCD and PC are used for image acquisition. Secondly, smoothing filters are used to restrain false damage points produced by noise. Then, with the shape feature included in the damage image, the OTSU Method which can define the best segmentation threshold automatically is used to achieve the goal to locate the damage regions. At last, we can supply some opinions for the lifetime of the optical components by analyzing the damage data, such as damage area, damage position. The method has the characteristics of few-detectors and simple-structures which can be installed without any changes of the original light path. With the method, experimental results show that it is stable and effective to achieve the goal of detecting the damage of optical components on-line in the ATP system.

  20. Online approach to feature interaction problems in middleware based system

    Institute of Scientific and Technical Information of China (English)

    HUANG Gang; LIU XuanZhe; MEI Hong

    2008-01-01

    As a popular infrastructure for distributed systems running on the Internet, middle-ware has to support much more diverse and complex interactions for coping with the drastically increasing demand on information technology and the extremely open and dynamic nature of the Internet. These supporting mechanisms facilitate the development, deployment, and integration of distributed systems, as well as increase the occasions for distributed systems to interact in an undesired way. The undesired interactions may cause serious problems, such as quality violation, function loss, and even system crash. In this paper, the problem is studied from the perspective of the feature interaction problem (FIP) in telecom, and an online ap-proach to the detection and solution on runtime systems is proposed. Based on a classification of middleware enabled interactions, the existence of FIP in middle-ware based systems is illustrated by four real cases and a conceptual comparison between middleware based systems and telecom systems. After that, runtime soft-ware architecture is employed to facilitate the online detection and solution of FIP. The approach is demonstrated on J2EE (Java 2 Platform Enterprise Edition) and applied to detect and resolve all of the four real cases.

  1. An online interactive simulation system for medical imaging education.

    Science.gov (United States)

    Dikshit, Aditya; Wu, Dawei; Wu, Chunyan; Zhao, Weizhao

    2005-09-01

    This report presents a recently developed web-based medical imaging simulation system for teaching students or other trainees who plan to work in the medical imaging field. The increased importance of computer and information technology widely applied to different imaging techniques in clinics and medical research necessitates a comprehensive medical imaging education program. A complete tutorial of simulations introducing popular imaging modalities, such as X-ray, MRI, CT, ultrasound and PET, forms an essential component of such an education. Internet technologies provide a vehicle to carry medical imaging education online. There exist a number of internet-based medical imaging hyper-books or online documentations. However, there are few providing interactive computational simulations. We focus on delivering knowledge of the physical principles and engineering implementation of medical imaging techniques through an interactive website environment. The online medical imaging simulation system presented in this report outlines basic principles underlying different imaging techniques and image processing algorithms and offers trainees an interactive virtual laboratory. For education purposes, this system aims to provide general understanding of each imaging modality with comprehensive explanations, ample illustrations and copious references as its thrust, rather than complex physics or detailed math. This report specifically describes the development of the tutorial for commonly used medical imaging modalities. An internet-accessible interface is used to simulate various imaging algorithms with user-adjustable parameters. The tutorial is under the MATLAB Web Server environment. Macromedia Director MX is used to develop interactive animations integrating theory with graphic-oriented simulations. HTML and JavaScript are used to enable a user to explore these modules online in a web browser. Numerous multiple choice questions, links and references for advanced study are

  2. On-line Test for Train Communication Based System

    Institute of Scientific and Technical Information of China (English)

    Zeng Xiaoqing; Masayuki Matsumoto; Kinji Mori; XU Fucang

    2002-01-01

    This paper gives out a new train automatic control system, which is based on train communication, and proposes a high assurance method to construct the system from current system. In current automatic train control (ATC) system, the central logic device detects position of each train and calculates permissible speed of each blocking section. Therefore, the central logic device controls speed of all trains. On the contrary, in the new system proposed in this paper, there is no central logical device and, train can communicate each other. The train detects the position and calculates the permissible speed itself according to the received position information of the preceding train. In the traditional method of changing an old system to a new one, test must be done off-line.While the integration technique proposed in this paper achieves on-line properties, and high assurance can be satisfied.

  3. Non-POSIX File System for LHCb Online Event Handling

    CERN Document Server

    Garnier, J C; Cherukuwada, S S

    2011-01-01

    LHCb aims to use its O(20000) CPU cores in the high level trigger (HLT) and its 120 TB Online storage system for data reprocessing during LHC shutdown periods. These periods can last a few days for technical maintenance or only a few hours during beam interfill gaps. These jobs run on files which are staged in from tape storage to the local storage buffer. The result are again one or more files. Efficient file writing and reading is essential for the performance of the system. Rather than using a traditional shared file-system such as NFS or CIFS we have implemented a custom, light-weight, non-Posix network file-system for the handling of these files. Streaming this file-system for the data-access allows to obtain high performance, while at the same time keep the resource consumption low and add nice features not found in NFS such as high-availability, transparent fail-over of the read and write service. The writing part of this streaming service is in successful use for the Online, real-time writing of the d...

  4. Research of an Online Service System for Beverages Chain Stores

    Directory of Open Access Journals (Sweden)

    Chih-Yao Lo

    2011-01-01

    Full Text Available Problem statement: In the highly competitive market, the availability of consumer support is the key to market-based beverage stores. Consumer demands for quality service so the industry must be more active to improve the quality of management to ensure that beverage market position. In order to allow market competition to be improved for the beverage store. Approach: The system builds an information network using web-based system provides operators and consumers a direct interaction. Enter the phone number provided by the consumer via the Send Message System (SMS verification code to obtain the online ordering drinks service. Using the Internet Information Technology makes the real-time order so that consumers can enjoy easy ordering and comfortable environment. Results: Using this internet beverage ordering system the online consumers can enjoy the choice of ordering drinks. This internet beverage ordering system would also build some databases to support, such as beverage type database, order database, outgoing regional database, these databases information will enable the industry to conduct drinks promotion strategy adjustments. Conclusion: This study uses cell phone number to enable consumers to obtain authentication codes via SMS. Necessary to convert the current beverage stores different marketing approach, through the information network and Web page interactivity, so that consumers would feel very interesting and fresh.

  5. Identification and impact of discoverers in online social systems.

    Science.gov (United States)

    Medo, Matúš; Mariani, Manuel S; Zeng, An; Zhang, Yi-Cheng

    2016-09-30

    Understanding the behavior of users in online systems is of essential importance for sociology, system design, e-commerce, and beyond. Most existing models assume that individuals in diverse systems, ranging from social networks to e-commerce platforms, tend to what is already popular. We propose a statistical time-aware framework to identify the users who differ from the usual behavior by being repeatedly and persistently among the first to collect the items that later become hugely popular. Since these users effectively discover future hits, we refer them as discoverers. We use the proposed framework to demonstrate that discoverers are present in a wide range of real systems. Once identified, discoverers can be used to predict the future success of new items. We finally introduce a simple network model which reproduces the discovery patterns observed in the real data. Our results open the door to quantitative study of detailed temporal patterns in social systems.

  6. Identification and impact of discoverers in online social systems

    Science.gov (United States)

    Medo, Matúš; Mariani, Manuel S.; Zeng, An; Zhang, Yi-Cheng

    2016-01-01

    Understanding the behavior of users in online systems is of essential importance for sociology, system design, e-commerce, and beyond. Most existing models assume that individuals in diverse systems, ranging from social networks to e-commerce platforms, tend to what is already popular. We propose a statistical time-aware framework to identify the users who differ from the usual behavior by being repeatedly and persistently among the first to collect the items that later become hugely popular. Since these users effectively discover future hits, we refer them as discoverers. We use the proposed framework to demonstrate that discoverers are present in a wide range of real systems. Once identified, discoverers can be used to predict the future success of new items. We finally introduce a simple network model which reproduces the discovery patterns observed in the real data. Our results open the door to quantitative study of detailed temporal patterns in social systems. PMID:27687588

  7. Online location of seismic damage to a water distribution system

    Institute of Scientific and Technical Information of China (English)

    梁建文

    2003-01-01

    As one of the most important urban lifeline systems, a water distribution system can be damaged under a strong earthquake, and the damage cannot easily be located, especially immediately after the event. This often causes tremendous difficulties to post-earthquake emergency response and recovery activities. This paper proposes a methodology to locate seismic damage to a water distribution system by monitoring watcr head online at some nodes in the water distribution system. An artificial neural network-based inverse analysis method is developed to estimate the water head variations at all nodes that are not monitored based on the water head variations at the nodes that are monitored. The methodology provides a quick, effective, and practical way to locate seismic damage to a water distribution system.

  8. Identification and impact of discoverers in online social systems

    Science.gov (United States)

    Medo, Matúš; Mariani, Manuel S.; Zeng, An; Zhang, Yi-Cheng

    2016-09-01

    Understanding the behavior of users in online systems is of essential importance for sociology, system design, e-commerce, and beyond. Most existing models assume that individuals in diverse systems, ranging from social networks to e-commerce platforms, tend to what is already popular. We propose a statistical time-aware framework to identify the users who differ from the usual behavior by being repeatedly and persistently among the first to collect the items that later become hugely popular. Since these users effectively discover future hits, we refer them as discoverers. We use the proposed framework to demonstrate that discoverers are present in a wide range of real systems. Once identified, discoverers can be used to predict the future success of new items. We finally introduce a simple network model which reproduces the discovery patterns observed in the real data. Our results open the door to quantitative study of detailed temporal patterns in social systems.

  9. Online hyperspectral imaging system for evaluating quality of agricultural products

    Science.gov (United States)

    Mo, Changyeun; Kim, Giyoung; Lim, Jongguk

    2017-06-01

    The consumption of fresh-cut agricultural produce in Korea has been growing. The browning of fresh-cut vegetables that occurs during storage and foreign substances such as worms and slugs are some of the main causes of consumers' concerns with respect to safety and hygiene. The purpose of this study is to develop an on-line system for evaluating quality of agricultural products using hyperspectral imaging technology. The online evaluation system with single visible-near infrared hyperspectral camera in the range of 400 nm to 1000 nm that can assess quality of both surfaces of agricultural products such as fresh-cut lettuce was designed. Algorithms to detect browning surface were developed for this system. The optimal wavebands for discriminating between browning and sound lettuce as well as between browning lettuce and the conveyor belt were investigated using the correlation analysis and the one-way analysis of variance method. The imaging algorithms to discriminate the browning lettuces were developed using the optimal wavebands. The ratio image (RI) algorithm of the 533 nm and 697 nm images (RI533/697) for abaxial surface lettuce and the ratio image algorithm (RI533/697) and subtraction image (SI) algorithm (SI538-697) for adaxial surface lettuce had the highest classification accuracies. The classification accuracy of browning and sound lettuce was 100.0% and above 96.0%, respectively, for the both surfaces. The overall results show that the online hyperspectral imaging system could potentially be used to assess quality of agricultural products.

  10. Identification and modeling of discoverers in online social systems

    CERN Document Server

    Medo, Matus; Zeng, An; Zhang, Yi-Cheng

    2015-01-01

    The dynamics of individuals is of essential importance for understanding the evolution of social systems. Most existing models assume that individuals in diverse systems, ranging from social networks to e-commerce, all tend to what is already popular. We develop an analytical time-aware framework which shows that when individuals make choices -- which item to buy, for example -- in online social systems, a small fraction of them is consistently successful in discovering popular items long before they actually become popular. We argue that these users, whom we refer to as discoverers, are fundamentally different from the previously known opinion leaders, influentials, and innovators. We use the proposed framework to demonstrate that discoverers are present in a wide range of systems. Once identified, they can be used to predict the future success of items. We propose a network model which reproduces the discovery patterns observed in the real data. Furthermore, data produced by the model pose a fundamental cha...

  11. A non-chemical system for online weed control.

    Science.gov (United States)

    Rueda-Ayala, Victor; Peteinatos, Gerassimos; Gerhards, Roland; Andújar, Dionisio

    2015-03-30

    Non-chemical weed control methods need to be directed towards a site-specific weeding approach, in order to be able to compete the conventional herbicide equivalents. A system for online weed control was developed. It automatically adjusts the tine angle of a harrow and creates different levels of intensity: from gentle to aggressive. Two experimental plots in a maize field were harrowed with two consecutive passes. The plots presented from low to high weed infestation levels. Discriminant capabilities of an ultrasonic sensor were used to determine the crop and weed variability of the field. A controlling unit used ultrasonic readings to adjust the tine angle, producing an appropriate harrowing intensity. Thus, areas with high crop and weed densities were more aggressively harrowed, while areas with lower densities were cultivated with a gentler treatment; areas with very low densities or without weeds were not treated. Although the weed development was relatively advanced and the soil surface was hard, the weed control achieved by the system reached an average of 51% (20%-91%), without causing significant crop damage as a result of harrowing. This system is proposed as a relatively low cost, online, and real-time automatic harrow that improves the weed control efficacy, reduces energy consumption, and avoids the usage of herbicide.

  12. Research of on-line detection system for power capacitor

    Science.gov (United States)

    Yao, Junda; Qian, Zheng; Yu, Hao; Xia, Jiuyun

    2016-01-01

    The hidden danger exists in the power capacitor of power system due to long-time operation under the environment of high voltage. Thus, it is possible to induce serious fault, and the on-line detection system is urgently required. In this paper, two methods of the on-line detection system are compared in order to realize the better real-time condition detection. The first method is based on the STM microprocessor with an internal 12 bit A/D converter, which converts analog signals which is arrived from the sample circuit into digital signals, and then the FFT algorithm is used to accomplish the measurement of the voltage and current values of the capacitor. The second method is based on the special electric energy metering IC, which can obtain RMS (Root Mean Square) of voltage and current by processing the sampled data of the voltage and current, and store RMS of voltage and current in its certain registers. The operating condition of the capacitor can be obtained after getting the values of voltage and current. By comparing the measuring results of two methods, the second method could achieve a higher measurement accuracy and more simple construction.

  13. PENGEMBANGAN CONTENT MANAGEMENT SYSTEM PADA ADMISI ONLINE BINUS UNIVERSITY

    Directory of Open Access Journals (Sweden)

    Karto Iskandar

    2012-11-01

    Full Text Available Technically registration form for new Binus institution must be regenerated and not dynamic. Therefore, this research is objected to simplify the creation of registration process for new Binus institution and provide solutions to the problem when Binus establish other new institutions. Methodology used is analysis and design of the database (database oriented. Analysis is done by asking the problems of existing systems in the IT Directorate, whereas the design uses UML diagram notation 2.0. The results obtained is front end and back end applications for the Content Management System of the registration form. The results of this design can be used to simplify the new student registration or in the many Binus institutions by grouping similar fields. With some changes in the front end and back end applications for content Management System, the addition of new online admission application form can be managed faster, where the creation of admission registration form is managed in the back end application. As suggestions for future development, online admission registration can be run in mobile version.

  14. Overview of the Earth System Science Education Alliance Online Courses

    Science.gov (United States)

    Botti, J.; Myers, R.

    2002-12-01

    Science education reform has skyrocketed over the last decade in large part thanks to technology-and one technology in particular, the Internet. The World Wide Web has opened up dynamic new online communities of learners. It has allowed educators from around the world to share thoughts about Earth system science and reexamine the way science is taught. A positive offshoot of this reform effort is the Earth System Science Education Alliance (ESSEA). This partnership among universities, colleges, and science education organizations is led by the Institute for Global Environmental Strategies and the Center for Educational Technologiestm at Wheeling Jesuit University. ESSEA's mission is to improve Earth system science education. ESSEA has developed three Earth system science courses for K-12 teachers. These online courses guide teachers into collaborative, student-centered science education experiences. Not only do these courses support teachers' professional development, they also help teachers implement Earth systems science content and age-appropriate pedagogical methods into their classrooms. The ESSEA courses are open to elementary, middle school, and high school teachers. Each course lasts one semester. The courses begin with three weeks of introductory content. Then teachers develop content and pedagogical and technological knowledge in four three-week learning cycles. The elementary school course focuses on basic Earth system interactions between land, life, air, and water. In week A of each learning cycle, teachers do earth system activities with their students. In week B teachers investigate aspects of the Earth system-for instance, the reason rocks change to soil, the relationship between rock weathering and soil nutrients, and the consequent development of biomes. In week C teachers develop classroom activities and share them online with other course participants. The middle school course stresses the effects of real-world events-volcanic eruptions

  15. Mixed Methods Student Evaluation of an Online Systemic Human Anatomy Course with Laboratory

    Science.gov (United States)

    Attardi, Stefanie M.; Choi, Suwhan; Barnett, John; Rogers, Kem A.

    2016-01-01

    A fully online section of an existing face-to-face (F2F) systemic human anatomy course with a prosection laboratory was offered for the first time in 2012-2013. Lectures for F2F students (N = 365) were broadcast in both live and archived format to online students (N = 40) using virtual classroom software. Laboratories were delivered online by a…

  16. Integrated online condition monitoring system for nuclear power plants

    Energy Technology Data Exchange (ETDEWEB)

    Hashemian, Hashem M. [Analysis and Measurement Services Corporation, Knoxville, TN (United States). AMS Technology Center

    2010-09-15

    Online condition monitoring or online monitoring (OLM) uses data acquired while a nuclear power is operating to continuously assess the health of the plant's sensors, processes, and equipment; to measure the dynamic performance of the plant's process instrumentation; to verify in-situ the calibration of the process instrumentation; to detect blockages, voids, and leaks in the pressure sensing lines; to identify core flow anomalies; to extend the life of neutron detectors and other sensors; and to measure the vibration of reactor internals. Both the steady-state or DC output of plant sensors and their AC signal or noise output can be used to assess sensor health, depending on whether the application is monitoring a rapidly changing (e.g., core barrel motion) or a slowly changing (e.g., sensor calibration) process. The author has designed, developed, installed, and tested OLM systems (comprised of software/hardware-based data acquisition and data processing modules) that integrate low-frequency (1 mHz to 1 Hz) techniques such as RTD cross-calibration, pressure transmitter calibration monitoring, and equipment condition monitoring and high-frequency (1 Hz to 1 kHz) techniques such as the noise analysis technique. The author has demonstrated the noise analysis technique's effectiveness for measuring the dynamic response-time of pressure transmitters and their sensing lines; for performing predictive maintenance on reactor internals; for detecting core flow anomalies; and for extending neutron detector life. Integrated online condition monitoring systems can combine AC and DC data acquisition and signal processing techniques, can use data from existing process sensors during all modes of plant operation, including startup, normal operation, and shutdown; can be retrofitted into existing PWRs, BWRs, and other reactor types and will be integrated into next-generation plants. (orig.)

  17. a Distributed Online 3D-LIDAR Mapping System

    Science.gov (United States)

    Schmiemann, J.; Harms, H.; Schattenberg, J.; Becker, M.; Batzdorfer, S.; Frerichs, L.

    2017-08-01

    In this paper we are presenting work done within the joint development project ANKommEn. It deals with the development of a highly automated robotic system for fast data acquisition in civil disaster scenarios. One of the main requirements is a versatile system, hence the concept embraces a machine cluster consisting of multiple fundamentally different robotic platforms. To cover a large variety of potential deployment scenarios, neither the absolute amount of participants, nor the precise individual layout of each platform shall be restricted within the conceptual design. Thus leading to a variety of special requirements, like onboard and online data processing capabilities for each individual participant and efficient data exchange structures, allowing reliable random data exchange between individual robots. We are demonstrating the functionality and performance by means of a distributed mapping system evaluated with real world data in a challenging urban and rural indoor/outdoor scenarios.

  18. Design Intelligent Model base Online Tuning Methodology for Nonlinear System

    Directory of Open Access Journals (Sweden)

    Ali Roshanzamir

    2014-04-01

    Full Text Available In various dynamic parameters systems that need to be training on-line adaptive control methodology is used. In this paper fuzzy model-base adaptive methodology is used to tune the linear Proportional Integral Derivative (PID controller. The main objectives in any systems are; stability, robust and reliability. However PID controller is used in many applications but it has many challenges to control of continuum robot. To solve these problems nonlinear adaptive methodology based on model base fuzzy logic is used. This research is used to reduce or eliminate the PID controller problems based on model reference fuzzy logic theory to control of flexible robot manipulator system and testing of the quality of process control in the simulation environment of MATLAB/SIMULINK Simulator.

  19. EARS: An Online Bibliographic Search and Retrieval System Based on Ordered Explosion.

    Science.gov (United States)

    Ramesh, R.; Drury, Colin G.

    1987-01-01

    Provides overview of Ergonomics Abstracts Retrieval System (EARS), an online bibliographic search and retrieval system in the area of human factors engineering. Other online systems are described, the design of EARS based on inverted file organization is explained, and system expansions including a thesaurus are discussed. (Author/LRW)

  20. A Distributed System for Learning Programming On-Line

    Science.gov (United States)

    Verdu, Elena; Regueras, Luisa M.; Verdu, Maria J.; Leal, Jose P.; de Castro, Juan P.; Queiros, Ricardo

    2012-01-01

    Several Web-based on-line judges or on-line programming trainers have been developed in order to allow students to train their programming skills. However, their pedagogical functionalities in the learning of programming have not been clearly defined. EduJudge is a project which aims to integrate the "UVA On-line Judge", an existing…

  1. The Monitor System for the LHCb on-line farm

    CERN Document Server

    Bonifazi, F; Carbone, A; Galli, D; Gregori, D; Marconi, U; Peco, G; Vagnoni, V

    2005-01-01

    The aim of the LHCb on-line farm Monitor System is to keep under control all the working indicators which are relevant for the farm operation, and to set the appropriate alarms whenever an error or a critical condition comes up. Since the most stressing tasks of the farm are the data transfer and processing, relevant indicators includes the CPU and the memory load of the system, the network interface and the TCP/IP stack parameters, the rates of the interrupts raised by the network interface card and the detailed status of the running processes. The monitoring of computers’ physical conditions (temperatures, fan speeds and motherboard voltages) are the subject of a separate technical note, since they are accessed in a different way, by using the IPMI protocol.

  2. Multi Agent Communication System for Online Auction with Decision Support System by JADE and TRACE

    CERN Document Server

    Martin, A; Madhusudanan, J; 10.4156/jcit.vol4.issue2.martin

    2011-01-01

    The success of online auctions has given buyers access to greater product diversity with potentially lower prices. It has provided sellers with access to large numbers of potential buyers and reduced transaction costs by enabling auctions to take place without regard to time or place. However it is difficult to spend more time period with system and closely monitor the auction until auction participant wins the bid or closing of the auction. Determining which items to bid on or what may be the recommended bid and when to bid it are difficult questions to answer for online auction participants. The multi agent auction advisor system JADE and TRACE, which is connected with decision support system, gives the recommended bid to buyers for online auctions. The auction advisor system relies on intelligent agents both for the retrieval of relevant auction data and for the processing of that data to enable meaningful recommendations, statistical reports and market prediction report to be made to auction participants.

  3. Student-Teacher Online Booking Appointment System in Academic Institutions

    Directory of Open Access Journals (Sweden)

    BELLO Ridwan Oluwaseun

    2016-10-01

    Full Text Available Web-based booking appointment systemsare prevalent currentlly either online or using traditional queuing systems.Several businesses like hospitals use different Web-based appointment systems for their patients which make appointments process more efficient, thereby minimizing patient’s waiting time and maximizing the total number of patients served. This study presents a web based appointment booking system through web or mobile devices that assists both students and lecturers to be acquainted with the time of appointment wherever they are. The system allows students and lecturers to simply gain access to the system by connecting to the Internet. It also enables students to drop any message which consists of the purpose and time of the appointment. The system was developed using Hypertext Markup Language (HTML5, Hypertext Pre-processor (PHP as scripting language, Bootstrap framework and My Structured Query Language (MySQL as database. This wil enable the web application to be robust, cheap and capable of oprerating on variuos platforms. The system does not only fully automated, and perform excellently well, but also user-friendly, time effective and efficient.

  4. Polar On-Line Acquisition Relay and Transmission System (POLARATS)

    Energy Technology Data Exchange (ETDEWEB)

    Yuracko, K.

    2004-07-15

    POLARATS (Polar On-Line Acquisition Relay And Transmission System) is being developed by YAHSGS LLC (YAHSGS) and Oak Ridge National Laboratory (ORNL) to provide remote, unattended monitoring of environmental parameters under harsh environmental conditions. In particular, instrumental design and engineering is oriented towards protection of human health in the Arctic, and with the additional goal of advancing Arctic education and research. POLARATS will obtain and transmit environmental data from hardened monitoring devices deployed in locations important to understanding atmospheric and aquatic pollutant migration as it is biomagnified in Arctic food chains. An Internet- and personal computer (PC)-based educational module will provide real time sensor data, on-line educational content, and will be integrated with workbooks and textbooks for use in middle and high school science programs. The educational elements of POLARATS include an Internet-based educational module that will instruct students in the use of the data and how those data fit into changing Arctic environments and food chains. POLARATS will: (1) Enable students, members of the community, and scientific researchers to monitor local environmental conditions in real time over the Internet; and (2) Provide additional educational benefits through integration with middle- and high-school science curricula. Information will be relayed from POLARATS devices to classrooms and libraries along with custom-designed POLARATS teaching materials that will be integrated into existing curricula to enhance the educational benefits realized from the information obtained.

  5. Development of an on-line monitoring expert system for heating system fouling

    Science.gov (United States)

    Wang, Yuan-yuan; Wang, Jian-guo

    2008-12-01

    This paper intends to develop an on-line monitoring expert system for heating system fouling. It chooses pressure, flowing and temperature as basic diagnostic variables. The basic evaluative guide lines are the coefficient of flowing resistance, the efficiency and cost of heating system. This system can be used to monitor the fouling degrees and estimate the fouling positions. The expert system is programmed by Delphi to realize all functions.

  6. iHelp: an intelligent online helpdesk system.

    Science.gov (United States)

    Wang, Dingding; Li, Tao; Zhu, Shenghuo; Gong, Yihong

    2011-02-01

    Due to the importance of high-quality customer service, many companies use intelligent helpdesk systems (e.g., case-based systems) to improve customer service quality. However, these systems face two challenges: 1) Case retrieval measures: most case-based systems use traditional keyword-matching-based ranking schemes for case retrieval and have difficulty to capture the semantic meanings of cases and 2) result representation: most case-based systems return a list of past cases ranked by their relevance to a new request, and customers have to go through the list and examine the cases one by one to identify their desired cases. To address these challenges, we develop iHelp, an intelligent online helpdesk system, to automatically find problem-solution patterns from the past customer-representative interactions. When a new customer request arrives, iHelp searches and ranks the past cases based on their semantic relevance to the request, groups the relevant cases into different clusters using a mixture language model and symmetric matrix factorization, and summarizes each case cluster to generate recommended solutions. Case and user studies have been conducted to show the full functionality and the effectiveness of iHelp.

  7. Performing a Course Material Enhancement Process with Asynchronous Interactive Online System

    Science.gov (United States)

    Wang, Hei-Chia

    2007-01-01

    Online systems have come to be heavily used in education, particularly for online learning and collecting information not otherwise readily available. Most e-learning systems, including interactive learning systems, have been designed to "push" course materials to students but rarely to "collect" or "pull" ideas from them. The interactive…

  8. Status of Research on Online Fuel Damage Detection and Core Damage Assessment System

    Institute of Scientific and Technical Information of China (English)

    XU; Xi-an; JI; Song-tao; GAO; Yong-guang; SHI; Xiao-lei

    2012-01-01

    <正>The technique research on the online fuel element damage detection and reactor core damage assessment is one project in the research program of the technical research for reactor key equipment maintenance and detection. The main research objective is to develop an online fuel damage detection system (FDDS), a core damage assessment system (CDAS) and make the integration of the two systems.

  9. The Effect of Online Systems Analysis Training on Aerospace Industry Business Performance: A Qualitative Study

    Science.gov (United States)

    Burk, Erlan

    2012-01-01

    Aerospace companies needed additional research on technology-based training to verify expectations when enhancing human capital through online systems analysis training. The research for online systems analysis training provided aerospace companies a means to verify expectations for systems analysis technology-based training on business…

  10. Online System Identification Method Using Modified Regularized Exponential Forgetting

    Directory of Open Access Journals (Sweden)

    Ján VACHÁLEK

    2013-12-01

    Full Text Available The paper deals with the use of regularized exponential forgetting (REF in the process of online system identification. The deployment of this type of forgetting strategy is advantageous for very long runs with small changes in the identified input parameters (in the range of 100 000 steps. In these cases, the classical methods of forgetting, such as an exponential (EF or directional forgetting (DF lack the required quality and reach the limit of numerical stability of the calculations of system parameters, which may lead to the early termination of system identification procedure. To avoid this undesirable effect and maintain sufficient primary information about the identified system, a modified REF method is used that employs alternative covariance matrix (ACM formulation to store the primary information of the identified system (REFACM and prevents the numerical destabilization of the identification process. The quality of the modified REFACM forgetting method —along with its validation and comparison with REZ to verify its properties—is performed using standard tests.

  11. An Interactive Online Education System for the Supplemental Nutrition Program

    Directory of Open Access Journals (Sweden)

    Alma Ohene-Opare

    2009-12-01

    Full Text Available Public health education is a key component in the variety of services provided by local health departments, particularly for the low-income demographic. In addition to helping the participants to live a healthier lifestyle, nutrition education sessions are a required component of a specific program for low-income mothers and children, entitled the Special Supplemental Nutrition Program for Women, Infants, and Children (WIC. However, some women in the Utah County WIC program were not receiving the sessions because the inconvenient class times and scheduling difficulty. With the increasing availability of the internet access by WIC participants, we can increase the availability and effectiveness of the nutrition education by providing courses online via the Utah County's WIC website. We are designing a system consisting of a web interface and a database backend, where health workers can author and publish interactive content, track users' progress, and evaluate the outcome of the courses taken.

  12. On-line corrosion monitoring in district heating systems

    DEFF Research Database (Denmark)

    Richter, Sonja; Thorarinsdottir, R.I.; Hilbert, Lisbeth Rischel

    2004-01-01

    Traditionally corrosion monitoring in district heating systems has been performed offline via weight loss coupons. These measurements give information about the past and not the present situation and require long exposure time (weeks or months). The good quality of district heating medium makes...... corrosion monitoring a challenge. Under normal conditions the pH is high (app. 9), conductivity is low (app. 10-200 µS/cm) and the concentration of dissolved oxygen is negligible. The low corrosion rates (in the order of µm/y) are difficult to measure and furthermore, factors such as hydrogen sulphide......), Electrochemical Noise (EN) and Zero Resistance Ammetry (ZRA). Electrochemical Resistance (ER) has also been used to measure corrosion. The method traditionally only measures corrosion off-line but with newly developed high-sensitive ER technique developed by MetriCorr in Denmark, on-line monitoring is possible...

  13. The Monitor online system of the OPERA muon magnetic spectrometer

    CERN Document Server

    Ugolino, U.; Acquafredda, R.; Masone, v.

    2008-01-01

    The OPERA muon magnetic spectrometer has been designed for muon detection, tracking and timing. The 44 bakelite Resistive Chambers (RPC) planes, imbibed inside the magnet iron slabs, must provide the tracking of the muon curved in the magnetic field to ease the momentum and charge measurement provided by the HPT. Furthermore, it provides the momentum for muons stopping in the iron. RPC signals will be also used as start of drift tube acquisition thanks to the very good time resolution of RPC detectors. Due to the required performances the tracking detector must be fully efficient and stable. In this conditions an online monitor is mandatory to continuously control stability of run conditions. We report the main characteristics and performances of the monitor system for the OPERA spectrometer and capabilities of the software developed for settings and data acquisition.

  14. INCORPORATING AGILE WITH MDA CASE STUDY: ONLINE POLLING SYSTEM

    Directory of Open Access Journals (Sweden)

    Pritha Guha

    2011-11-01

    Full Text Available Nowadays agile software development is used in greater extend but for small organizations only, whereasMDA is suitable for large organizations but yet not standardized. In this paper the pros and cons ofModel Driven Architecture (MDA and Extreme programming have been discussed. As both of them havesome limitations and cannot be used in both large scale and small scale organizations a new architecturehas been proposed. In this model it is tried to opt the advantages and important values to overcome thelimitations of both the software development procedures. In support to the proposed architecture theimplementation of it on Online Polling System has been discussed and all the phases of softwaredevelopment have been explained.

  15. Can online conference systems improve veterinary education? A study about the capability of online conferencing and its acceptance.

    Science.gov (United States)

    Koch, Michael; Fischer, Martin R; Tipold, Andrea; Ehlers, Jan P

    2012-01-01

    In veterinary medicine, there is an ongoing need for students, educators, and veterinarians to exchange the latest knowledge in their respective fields and to learn about unusual cases, emerging diseases, and treatment. Networking among veterinary faculties is developing rapidly, but conferences and meetings can be difficult to attend because of time limitations and travel costs. The current study examines acceptance of synchronous online conferences, seminars, meetings, and lectures by veterinarians and students. First, an online survey on the use of communication technology in veterinary medicine was made available for 15 weeks to every German-speaking veterinary university and via professional journals and an online veterinary forum. A total of 1,776 persons (620 veterinarians and 1,156 students) participated. Most reported using the Internet at least once per day; more than half reported using instant messengers. Most participants used the Internet for communication, but less than half used Skype. Second, to test the spectrum of tools for online conferences, a variety of "virtual classroom" systems (netucate systems iLinc, Adobe Acrobat Connect Pro, Cisco WebEx, Skype) were used to deliver student lectures, veterinary continuing-education courses, and academic conferences at the University of Veterinary Medicine, Hannover (TiHo). Of 591 participants in 63 online events, 99.4% rated the virtual events as enjoyable, 96.1% found them useful, and 92.4% said that they learned a lot. Participants noted that the courses were not tied to a certain place, and thus saved time and travel costs. Online conference systems thus offer new opportunities to provide information in veterinary medicine.

  16. Developing an online collaborative system within the domain of financial auditing

    OpenAIRE

    2015-01-01

    The research paper, focused on a rather technical approach, has the goal to design a system that brings together diverse audit stakeholders and investigates how an audit database available online can be implemented in SharePoint, as part of an on-line audit system which is collaborative and national. The online audit database covers various information needs for both financial auditors and the employees of the Chamber of Financial Auditors of Romania. For rapid deployment, we used various too...

  17. A Deployed People-to-People Recommender System in Online Dating

    OpenAIRE

    2015-01-01

    Online dating is a prime application area for recommender systems, as users face an abundance of choice, must act on limited information, and are participating in a competitive matching market. This article reports on the successful deployment of a people-to-people recommender system on a large commercial online dating site. The deployment was the result of thorough evaluation and an online trial of a number of methods, including profile-based, collaborative filtering and hybrid algorithms. R...

  18. Design and Implementation of Online Booking System of University Sports Venues

    Directory of Open Access Journals (Sweden)

    Li Can

    2017-01-01

    Full Text Available To solve the imbalanced use of university sports venues, the online booking system of university sports venues based on the table tennis hall of Zhengzhou University is designed, combining the experience of the existing online booking systems, the main methods and the major ideal of building these systems both at home and aboard. The basic functions of the system are designed according to the general requirement analysis, including user’s registration and login, online venue booking, online payment, personal center, message board and database construction. The development of the system used Java programming language, JSP (a Web platform development technology, MySQL database processing technology, JDBC data access model, MyEclipse development platform and Tomcat server. The system has accomplished such functions as online booking, online payment and online message. The tests of the system are run in good conditions. The use of the system has made up for the current luck of sports venues management, solved the problems of the online booking function of university sports venues, improved the efficiency of the venues and meet the needs of efficient use of the venues. The system can be an experience of the management of the other college sports venues.

  19. Forensic analysis of online marketing for electronic nicotine delivery systems.

    Science.gov (United States)

    Cobb, Nathan K; Brookover, Jody; Cobb, Caroline O

    2015-03-01

    Electronic nicotine delivery systems (ENDS) are growing in awareness and use in the USA. They are currently unregulated as the Food and Drug Administration has yet to assert jurisdiction under its tobacco authority over these products, and a US Court of Appeals held they cannot be regulated as drugs/delivery devices if they are not marketed for a therapeutic purpose. Observation of the current online marketplace suggests ENDS, like some nutraceutical products, are being promoted using affiliate marketing techniques using claims concerning purported health benefits. This study performed a forensic analysis to characterise the relationships between online ENDS affiliate advertisements and ENDS sellers, and evaluated descriptive content on advertisements and websites to inform future policy and regulatory efforts. A purposive sampling strategy was used to identify three forms of ENDS advertising. Web proxy software recorded identifiable objects and their ties to each other. Network analysis of these ties followed, as well as analysis of descriptive content on advertisements and websites identified. The forensic analysis included four ENDS advertisements, two linked affiliate websites, and two linked seller websites, and demonstrated a multilevel relationship between advertisements and sellers with multiple layers of redirection. Descriptive analysis indicated that advertisements and affiliates, but not linked sellers, included smoking cessation claims. Results suggest that ENDS sellers may be trying to distance marketing efforts containing unsubstantiated claims from sales. A separate descriptive analysis of 20 ENDS seller web pages indicated that the use of affiliate marketing by sellers may be widespread. These findings support increased monitoring and regulation of ENDS marketing to prevent deceptive marketing tactics and ensure consumer safety. Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please

  20. To Help Helpdesk: A Field Study of Online Help Systems in Campus Context

    Science.gov (United States)

    Chen, Ye

    2004-01-01

    This paper reports on a field-based study of online help systems at the University of Maryland. After collecting data by means of interview, observation and focus group, analysis is grounded on the contextual data, thus shedding light on particular organizational and human behavioral issues on online help systems. The objectives of this research…

  1. On-Line Multichannel Raman Spectroscopic Detection System For Capillary Zone Electrophoresis

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    An on-line multichannel Raman spectroscopic detection system for capillary electrophoresis was established by using an Ar+ laser and a cryogenically cooled ICCD. Resonant excitation Raman spectra of methyl red and methyl orange were employed to test the system. The result shows that it could yield on-line electrophoretogram and time series of Raman spectra.

  2. An Agent System to Support Student Teams Working Online

    Science.gov (United States)

    Whatley, Janice

    2004-01-01

    Online learning is now a reality, with distributed learning and blended learning becoming more widely used in Higher Education. Novel ways in which undergraduate and postgraduate learning material can be presented are being developed, and methods for helping students to learn online are needed, especially if we require them to collaborate with…

  3. Problem Reduction in Online Payment System Using Hybrid Model

    CERN Document Server

    Singh, Sandeep Pratap; Rakesh, Nitin; Tyagi, Vipin

    2011-01-01

    Online auction, shopping, electronic billing etc. all such types of application involves problems of fraudulent transactions. Online fraud occurrence and its detection is one of the challenging fields for web development and online phantom transaction. As no-secure specification of online frauds is in research database, so the techniques to evaluate and stop them are also in study. We are providing an approach with Hidden Markov Model (HMM) and mobile implicit authentication to find whether the user interacting online is a fraud or not. We propose a model based on these approaches to counter the occurred fraud and prevent the loss of the customer. Our technique is more parameterized than traditional approaches and so,chances of detecting legitimate user as a fraud will reduce.

  4. OLAWSDS:An Online Arabic Web Spam Detection System

    Directory of Open Access Journals (Sweden)

    Mohammed N. Al-Kabi

    2014-01-01

    Full Text Available For marketing purposes, Some Websites designers and administrators use illegal Search Engine Optimization (SEO techniques to optimize the ranking of their Web pages and mislead the search engines. Some Arabic Web pages use both content and link features, to increase artificially the rank of their Web pages in the Search Engine Results Pages (SERPs. This study represents an enhancement to previous work in this field. It includes the design and implementation of an online Arabic Web spam detection system, based on algorithms and mathematical foundations, which can detect the Arabic content and link web spam depending on the tree of the spam detection conditions, beside depending on the user’s feedback through a custom Web browser. The users can participate in making the decision about any Web page, through their feedbacks, so they judge if the Arabic Web pages in the browser are relevant for their particular queries or not. The proposed system uses the extracted content and link features from Arabic Web pages to determine whether to label each Web page as a spam or as a non-spam. This system also attempts to learn from the user’s feedback to enhance automatically its performance. Statistical analysis is adopted in this study to evaluate the proposed system. Statistical Package for the Social Sciences (SPSS software is used to evaluate this new system which considers the users feedbacks as dependent variables, while Arabic content and links features on the other hand are considered independent variables. The statistical analysis with the SPSS is used to apply a variety of tests, such as the test of the analysis of variance (ANOVA. ANOVA is used to show the relationships between the dependent and independent variables in the dataset, which leads to solving problems and building intelligent decisions and results.

  5. FORESTRY COMPANY SATISFACTION TOWARDS ONLINE INFORMATION SYSTEM IMPLEMENTATION OF FOREST PRODUCT MANAGEMENT (SI-PUHH

    Directory of Open Access Journals (Sweden)

    Mangatas Simanjuntak

    2016-01-01

    Full Text Available This research was conducted with the aim 1 to analyze gaps that occurs between perception and expectations of the company implementation of SI-PUHH Online, 2 to analyze the level of satisfaction of the company implementation of SI-PUHH Online 3 Formulate a strategy to improve the quality of service implementation PUHH Information System Online. Analysis of the data used is the Importance Performance Analysis (IPA and the Customer Satisfaction Index (CSI. The results showed that there are five attributes that considered important in determining customer satisfaction. These five attributes are: 1 System Online has a server that is up to date with internet bandwidth that is large so it is not easy down and can be accessed quickly; 2 response rapid administrator/operator; 3 accurate data in accordance with entrian company; 4 There is a backup server; and 5 Officer SI-Online PUHH always willing to help. The fifth attribute is an attribute that has a high level of importance, but in its implementation or performance is still unsatisfactory. Customer Satisfaction Index (CSI on the implementation of this SIPUHH Online amounted to 72,07%, meaning that customers "satisfied" on the performance of services carried out by the Ministry of Environment and Forestry, but must maintain and improve the performance SERVQUAL PUHH Information System Online is to be able to satisfy the users company PUHH Information System Online.Keywords: SI-PUHH Online, SERVQUAL, IPA, CSI

  6. The IceCube Neutrino Observatory: instrumentation and online systems

    Science.gov (United States)

    Aartsen, M. G.; Ackermann, M.; Adams, J.; Aguilar, J. A.; Ahlers, M.; Ahrens, M.; Altmann, D.; Andeen, K.; Anderson, T.; Ansseau, I.; Anton, G.; Archinger, M.; Argüelles, C.; Auer, R.; Auffenberg, J.; Axani, S.; Baccus, J.; Bai, X.; Barnet, S.; Barwick, S. W.; Baum, V.; Bay, R.; Beattie, K.; Beatty, J. J.; Becker Tjus, J.; Becker, K.-H.; Bendfelt, T.; BenZvi, S.; Berley, D.; Bernardini, E.; Bernhard, A.; Besson, D. Z.; Binder, G.; Bindig, D.; Bissok, M.; Blaufuss, E.; Blot, S.; Boersma, D.; Bohm, C.; Börner, M.; Bos, F.; Bose, D.; Böser, S.; Botner, O.; Bouchta, A.; Braun, J.; Brayeur, L.; Bretz, H.-P.; Bron, S.; Burgman, A.; Burreson, C.; Carver, T.; Casier, M.; Cheung, E.; Chirkin, D.; Christov, A.; Clark, K.; Classen, L.; Coenders, S.; Collin, G. H.; Conrad, J. M.; Cowen, D. F.; Cross, R.; Day, C.; Day, M.; de André, J. P. A. M.; De Clercq, C.; del Pino Rosendo, E.; Dembinski, H.; De Ridder, S.; Descamps, F.; Desiati, P.; de Vries, K. D.; de Wasseige, G.; de With, M.; DeYoung, T.; Díaz-Vélez, J. C.; di Lorenzo, V.; Dujmovic, H.; Dumm, J. P.; Dunkman, M.; Eberhardt, B.; Edwards, W. R.; Ehrhardt, T.; Eichmann, B.; Eller, P.; Euler, S.; Evenson, P. A.; Fahey, S.; Fazely, A. R.; Feintzeig, J.; Felde, J.; Filimonov, K.; Finley, C.; Flis, S.; Fösig, C.-C.; Franckowiak, A.; Frère, M.; Friedman, E.; Fuchs, T.; Gaisser, T. K.; Gallagher, J.; Gerhardt, L.; Ghorbani, K.; Giang, W.; Gladstone, L.; Glauch, T.; Glowacki, D.; Glüsenkamp, T.; Goldschmidt, A.; Gonzalez, J. G.; Grant, D.; Griffith, Z.; Gustafsson, L.; Haack, C.; Hallgren, A.; Halzen, F.; Hansen, E.; Hansmann, T.; Hanson, K.; Haugen, J.; Hebecker, D.; Heereman, D.; Helbing, K.; Hellauer, R.; Heller, R.; Hickford, S.; Hignight, J.; Hill, G. C.; Hoffman, K. D.; Hoffmann, R.; Hoshina, K.; Huang, F.; Huber, M.; Hulth, P. O.; Hultqvist, K.; In, S.; Inaba, M.; Ishihara, A.; Jacobi, E.; Jacobsen, J.; Japaridze, G. S.; Jeong, M.; Jero, K.; Jones, A.; Jones, B. J. P.; Joseph, J.; Kang, W.; Kappes, A.; Karg, T.; Karle, A.; Katz, U.; Kauer, M.; Keivani, A.; Kelley, J. L.; Kemp, J.; Kheirandish, A.; Kim, J.; Kim, M.; Kintscher, T.; Kiryluk, J.; Kitamura, N.; Kittler, T.; Klein, S. R.; Kleinfelder, S.; Kleist, M.; Kohnen, G.; Koirala, R.; Kolanoski, H.; Konietz, R.; Köpke, L.; Kopper, C.; Kopper, S.; Koskinen, D. J.; Kowalski, M.; Krasberg, M.; Krings, K.; Kroll, M.; Krückl, G.; Krüger, C.; Kunnen, J.; Kunwar, S.; Kurahashi, N.; Kuwabara, T.; Labare, M.; Laihem, K.; Landsman, H.; Lanfranchi, J. L.; Larson, M. J.; Lauber, F.; Laundrie, A.; Lennarz, D.; Leich, H.; Lesiak-Bzdak, M.; Leuermann, M.; Lu, L.; Ludwig, J.; Lünemann, J.; Mackenzie, C.; Madsen, J.; Maggi, G.; Mahn, K. B. M.; Mancina, S.; Mandelartz, M.; Maruyama, R.; Mase, K.; Matis, H.; Maunu, R.; McNally, F.; McParland, C. P.; Meade, P.; Meagher, K.; Medici, M.; Meier, M.; Meli, A.; Menne, T.; Merino, G.; Meures, T.; Miarecki, S.; Minor, R. H.; Montaruli, T.; Moulai, M.; Murray, T.; Nahnhauer, R.; Naumann, U.; Neer, G.; Newcomb, M.; Niederhausen, H.; Nowicki, S. C.; Nygren, D. R.; Obertacke Pollmann, A.; Olivas, A.; O'Murchadha, A.; Palczewski, T.; Pandya, H.; Pankova, D. V.; Patton, S.; Peiffer, P.; Penek, Ö.; Pepper, J. A.; Pérez de los Heros, C.; Pettersen, C.; Pieloth, D.; Pinat, E.; Price, P. B.; Przybylski, G. T.; Quinnan, M.; Raab, C.; Rädel, L.; Rameez, M.; Rawlins, K.; Reimann, R.; Relethford, B.; Relich, M.; Resconi, E.; Rhode, W.; Richman, M.; Riedel, B.; Robertson, S.; Rongen, M.; Roucelle, C.; Rott, C.; Ruhe, T.; Ryckbosch, D.; Rysewyk, D.; Sabbatini, L.; Sanchez Herrera, S. E.; Sandrock, A.; Sandroos, J.; Sandstrom, P.; Sarkar, S.; Satalecka, K.; Schlunder, P.; Schmidt, T.; Schoenen, S.; Schöneberg, S.; Schukraft, A.; Schumacher, L.; Seckel, D.; Seunarine, S.; Solarz, M.; Soldin, D.; Song, M.; Spiczak, G. M.; Spiering, C.; Stanev, T.; Stasik, A.; Stettner, J.; Steuer, A.; Stezelberger, T.; Stokstad, R. G.; Stößl, A.; Ström, R.; Strotjohann, N. L.; Sulanke, K.-H.; Sullivan, G. W.; Sutherland, M.; Taavola, H.; Taboada, I.; Tatar, J.; Tenholt, F.; Ter-Antonyan, S.; Terliuk, A.; Tešić, G.; Thollander, L.; Tilav, S.; Toale, P. A.; Tobin, M. N.; Toscano, S.; Tosi, D.; Tselengidou, M.; Turcati, A.; Unger, E.; Usner, M.; Vandenbroucke, J.; van Eijndhoven, N.; Vanheule, S.; van Rossem, M.; van Santen, J.; Vehring, M.; Voge, M.; Vogel, E.; Vraeghe, M.; Wahl, D.; Walck, C.; Wallace, A.; Wallraff, M.; Wandkowsky, N.; Weaver, Ch.; Weiss, M. J.; Wendt, C.; Westerhoff, S.; Wharton, D.; Whelan, B. J.; Wickmann, S.; Wiebe, K.; Wiebusch, C. H.; Wille, L.; Williams, D. R.; Wills, L.; Wisniewski, P.; Wolf, M.; Wood, T. R.; Woolsey, E.; Woschnagg, K.; Xu, D. L.; Xu, X. W.; Xu, Y.; Yanez, J. P.; Yodh, G.; Yoshida, S.; Zoll, M.

    2017-03-01

    The IceCube Neutrino Observatory is a cubic-kilometer-scale high-energy neutrino detector built into the ice at the South Pole. Construction of IceCube, the largest neutrino detector built to date, was completed in 2011 and enabled the discovery of high-energy astrophysical neutrinos. We describe here the design, production, and calibration of the IceCube digital optical module (DOM), the cable systems, computing hardware, and our methodology for drilling and deployment. We also describe the online triggering and data filtering systems that select candidate neutrino and cosmic ray events for analysis. Due to a rigorous pre-deployment protocol, 98.4% of the DOMs in the deep ice are operating and collecting data. IceCube routinely achieves a detector uptime of 99% by emphasizing software stability and monitoring. Detector operations have been stable since construction was completed, and the detector is expected to operate at least until the end of the next decade.

  7. Online decision support system for surface irrigation management

    Science.gov (United States)

    Wang, Wenchao; Cui, Yuanlai

    2017-04-01

    Irrigation has played an important role in agricultural production. Irrigation decision support system is developed for irrigation water management, which can raise irrigation efficiency with few added engineering services. An online irrigation decision support system (OIDSS), in consist of in-field sensors and central computer system, is designed for surface irrigation management in large irrigation district. Many functions have acquired in OIDSS, such as data acquisition and detection, real-time irrigation forecast, water allocation decision and irrigation information management. The OIDSS contains four parts: Data acquisition terminals, Web server, Client browser and Communication system. Data acquisition terminals are designed to measure paddy water level, soil water content in dry land, ponds water level, underground water level, and canals water level. A web server is responsible for collecting meteorological data, weather forecast data, the real-time field data, and manager's feedback data. Water allocation decisions are made in the web server. Client browser is responsible for friendly displaying, interacting with managers, and collecting managers' irrigation intention. Communication system includes internet and the GPRS network used by monitoring stations. The OIDSS's model is based on water balance approach for both lowland paddy and upland crops. Considering basic database of different crops water demands in the whole growth stages and irrigation system engineering information, the OIDSS can make efficient decision of water allocation with the help of real-time field water detection and weather forecast. This system uses technical methods to reduce requirements of user's specialized knowledge and can also take user's managerial experience into account. As the system is developed by the Browser/Server model, it is possible to make full use of the internet resources, to facilitate users at any place where internet exists. The OIDSS has been applied in

  8. Development of on-line laser power monitoring system

    Science.gov (United States)

    Ding, Chien-Fang; Lee, Meng-Shiou; Li, Kuan-Ming

    2016-03-01

    Since the laser was invented, laser has been applied in many fields such as material processing, communication, measurement, biomedical engineering, defense industries and etc. Laser power is an important parameter in laser material processing, i.e. laser cutting, and laser drilling. However, the laser power is easily affected by the environment temperature, we tend to monitor the laser power status, ensuring there is an effective material processing. Besides, the response time of current laser power meters is too long, they cannot measure laser power accurately in a short time. To be more precisely, we can know the status of laser power and help us to achieve an effective material processing at the same time. To monitor the laser power, this study utilize a CMOS (Complementary metal-oxide-semiconductor) camera to develop an on-line laser power monitoring system. The CMOS camera captures images of incident laser beam after it is split and attenuated by beam splitter and neutral density filter. By comparing the average brightness of the beam spots and measurement results from laser power meter, laser power can be estimated. Under continuous measuring mode, the average measuring error is about 3%, and the response time is at least 3.6 second shorter than thermopile power meters; under trigger measuring mode which enables the CMOS camera to synchronize with intermittent laser output, the average measuring error is less than 3%, and the shortest response time is 20 millisecond.

  9. A secure online image trading system for untrusted cloud environments.

    Science.gov (United States)

    Munadi, Khairul; Arnia, Fitri; Syaryadhi, Mohd; Fujiyoshi, Masaaki; Kiya, Hitoshi

    2015-01-01

    In conventional image trading systems, images are usually stored unprotected on a server, rendering them vulnerable to untrusted server providers and malicious intruders. This paper proposes a conceptual image trading framework that enables secure storage and retrieval over Internet services. The process involves three parties: an image publisher, a server provider, and an image buyer. The aim is to facilitate secure storage and retrieval of original images for commercial transactions, while preventing untrusted server providers and unauthorized users from gaining access to true contents. The framework exploits the Discrete Cosine Transform (DCT) coefficients and the moment invariants of images. Original images are visually protected in the DCT domain, and stored on a repository server. Small representation of the original images, called thumbnails, are generated and made publicly accessible for browsing. When a buyer is interested in a thumbnail, he/she sends a query to retrieve the visually protected image. The thumbnails and protected images are matched using the DC component of the DCT coefficients and the moment invariant feature. After the matching process, the server returns the corresponding protected image to the buyer. However, the image remains visually protected unless a key is granted. Our target application is the online market, where publishers sell their stock images over the Internet using public cloud servers.

  10. An On-line Assessment System for English-Chinese Translation

    Institute of Scientific and Technical Information of China (English)

    TIAN Yan; LU Ru-zhan; DUAN Jian-yong

    2007-01-01

    On-line assessment of English-Chinese translation is a challenging task as it involves natural language processing. YanFa, an on-line assessment system for English-Chinese translation, is a pilot research project into scoring student's translation on-line. Based on the theory of translation equivalence, an algorithm called "conceptual similarity matching" was developed. YanFa can assess students' translation on-line timely, generate test papers automatically, offer standard versions of translation, and the scores of each sentence to students. The evaluation proves that YanFa is practical compared with the scores given by experts.

  11. Exploring Teaching Programming Online through Web Conferencing System: The Lens of Activity Theory

    Science.gov (United States)

    Çakiroglu, Ünal; Kokoç, Mehmet; Kol, Elvan; Turan, Ebru

    2016-01-01

    The purpose of this qualitative study was to understand activities and behaviors of learners and instructor in an online programming course. Adobe Connect web conferencing system was used as a delivery platform. A total of fifty-six sophomore students attending a computer education and instructional technology program (online) participated in this…

  12. Activity Systems and Conflict Resolution in an Online Professional Communication Course

    Science.gov (United States)

    Walker, Kristin

    2004-01-01

    Conflicts often arise in online professional communication class discussions as students discuss sensitive ethical issues relating to the workplace. When conflicts arise in an online class, the activity system of the class has to be kept in balance for the course to continue functioning effectively. Activity theory and distributed learning theory…

  13. Online sensor system based on laser-induced breakdown spectroscopy in quality inspection of demolition concrete

    NARCIS (Netherlands)

    Xia, H.; Bakker, M.C.M.

    2012-01-01

    In the C2CA project, an online sensor system is required to measure and control the quality and homogeneity of demolition concrete continuously. Laser-induced breakdown spectroscopy is a candidate to fulfil the objective in several tasks. Investigated is the ability of LIBS as an online

  14. Multi-Agent Design and Implementation for an Online Peer Help System

    Science.gov (United States)

    Meng, Anbo

    2014-01-01

    With the rapid advance of e-learning, the online peer help is playing increasingly important role. This paper explores the application of MAS to an online peer help system (MAPS). In the design phase, the architecture of MAPS is proposed, which consists of a set of agents including the personal agent, the course agent, the diagnosis agent, the DF…

  15. Exploring Teaching Programming Online through Web Conferencing System: The Lens of Activity Theory

    Science.gov (United States)

    Çakiroglu, Ünal; Kokoç, Mehmet; Kol, Elvan; Turan, Ebru

    2016-01-01

    The purpose of this qualitative study was to understand activities and behaviors of learners and instructor in an online programming course. Adobe Connect web conferencing system was used as a delivery platform. A total of fifty-six sophomore students attending a computer education and instructional technology program (online) participated in this…

  16. Factors Predicting Online University Students' Use of a Mobile Learning Management System (m-LMS)

    Science.gov (United States)

    Joo, Young Ju; Kim, Nari; Kim, Nam Hee

    2016-01-01

    This study analyzed the relationships among factors predicting online university students' actual usage of a mobile learning management system (m-LMS) through a structural model. Data from 222 students in a Korean online university were collected to investigate integrated relationships among their perceived ease of use, perceived usefulness,…

  17. Activity Systems and Conflict Resolution in an Online Professional Communication Course

    Science.gov (United States)

    Walker, Kristin

    2004-01-01

    Conflicts often arise in online professional communication class discussions as students discuss sensitive ethical issues relating to the workplace. When conflicts arise in an online class, the activity system of the class has to be kept in balance for the course to continue functioning effectively. Activity theory and distributed learning theory…

  18. Online Course Best Practices as Precision Teaching: Case Study of Quality Systems Courses

    Science.gov (United States)

    Sinn, John W.

    2007-01-01

    Best practices for online courses are explored as precision teaching (PT) within the context of a case study analysis. The case study focuses on courses taught, 100 per cent online, as part of Quality Systems (QS) at Bowling Green State University (BGSU). PT literature establishes main attributes desired as the basis for best practices. The…

  19. An online hybrid BCI system based on SSVEP and EMG

    Science.gov (United States)

    Lin, Ke; Cinetto, Andrea; Wang, Yijun; Chen, Xiaogang; Gao, Shangkai; Gao, Xiaorong

    2016-04-01

    Objective. A hybrid brain-computer interface (BCI) is a device combined with at least one other communication system that takes advantage of both parts to build a link between humans and machines. To increase the number of targets and the information transfer rate (ITR), electromyogram (EMG) and steady-state visual evoked potential (SSVEP) were combined to implement a hybrid BCI. A multi-choice selection method based on EMG was developed to enhance the system performance. Approach. A 60-target hybrid BCI speller was built in this study. A single trial was divided into two stages: a stimulation stage and an output selection stage. In the stimulation stage, SSVEP and EMG were used together. Every stimulus flickered at its given frequency to elicit SSVEP. All of the stimuli were divided equally into four sections with the same frequency set. The frequency of each stimulus in a section was different. SSVEPs were used to discriminate targets in the same section. Different sections were classified using EMG signals from the forearm. Subjects were asked to make different number of fists according to the target section. Canonical Correlation Analysis (CCA) and mean filtering was used to classify SSVEP and EMG separately. In the output selection stage, the top two optimal choices were given. The first choice with the highest probability of an accurate classification was the default output of the system. Subjects were required to make a fist to select the second choice only if the second choice was correct. Main results. The online results obtained from ten subjects showed that the mean accurate classification rate and ITR were 81.0% and 83.6 bits min-1 respectively only using the first choice selection. The ITR of the hybrid system was significantly higher than the ITR of any of the two single modalities (EMG: 30.7 bits min-1, SSVEP: 60.2 bits min-1). After the addition of the second choice selection and the correction task, the accurate classification rate and ITR was

  20. Medication incidents reported to an online incident reporting system.

    LENUS (Irish Health Repository)

    Alrwisan, Adel

    2011-01-15

    AIMS: Approximately 20% of deaths from adverse events are related to medication incidents, costing the NHS an additional £500 million annually. Less than 5% of adverse events are reported. This study aims to assess the reporting rate of medication incidents in NHS facilities in the north east of Scotland, and to describe the types and outcomes of reported incidents among different services. Furthermore, we wished to quantify the proportion of reported incidents according to the reporters\\' profession. METHODS: A retrospective description was made of medication incidents reported to an online reporting system (DATIX) over a 46-month-period (July 2005 to April 2009). Reports originated from acute and community hospitals, mental health, and primary care facilities. RESULTS: Over the study period there were 2,666 incidents reported with a mean monthly reporting rate of 78.2\\/month (SD±16.9). 6.1% of all incidents resulted in harm, with insulin being the most commonly implicated medication. Nearly three-quarters (74.2%, n=1,978) of total incidents originated from acute hospitals. Administration incidents were implicated in the majority of the reported medication incidents (59%), followed by prescribing (10.8%) and dispensing (9.9%), while the nondescript "other medication incidents" accounted for 20.3% of total incidents. The majority of reports were made by nursing and midwifery staff (80%), with medical and dental professionals reporting the lowest number of incidents (n=56, 2%). CONCLUSIONS: The majority of medication incidents in this study were reported by nursing and midwifery staff, and were due to administration incidents. There is a clear need to elucidate the reasons for the limited contribution of the medical and dental professionals to reporting medication incidents.

  1. On-Line Retrieval System Design; Part V of Scientific Report No. ISR-18, Information Storage and Retrieval...

    Science.gov (United States)

    Cornell Univ., Ithaca, NY. Dept. of Computer Science.

    On-line retrieval system design is discussed in the two papers which make up Part Five of this report on Salton's Magical Automatic Retriever of Texts (SMART) project report. The first paper: "A Prototype On-Line Document Retrieval System" by D. Williamson and R. Williamson outlines a design for a SMART on-line document retrieval system…

  2. On-line multidimensional separation systems for peptide analysis

    NARCIS (Netherlands)

    Stroink, T.

    2005-01-01

    Today, there is an increasing interest in selective and sensitive analysis of proteins and peptides with a relatively high speed. The first chapter of this thesis describes several strategies for the on-line multidimensional analysis of peptides and proteins in biological samples. This overview of t

  3. Using Three Online Course Management Systems in EFL Instruction

    Science.gov (United States)

    Al-Jarf, Reima Sado

    2005-01-01

    Nicenet, WebCT and Moodle were used to teach grammar to freshman students at the College of Languages and Translation, King Saud University in Saudi Arabia. The subjects were divided into three groups and were randomly assigned to the three online courses. The same questions, discussion threads, grammar websites, daily grammar lesson, exercises…

  4. Research and exploitation of CNC laser manufacturing online monitoring system based on OpenGL

    Science.gov (United States)

    Wang, Gang; Hu, Shengsun; Wang, Mingjian; Ding, Wei; Zhao, Jie

    2010-12-01

    CNC manufacturing online monitoring technology is a significant method to improve the processing quality and achieve an important part of intelligent processing. Based on OpenGL 3D graphics technology, a Computer Numerical Control (CNC ) Laser Manufacturing 3D model is established; based on the model and the powerful ability of OpenGL, a CNC manufacturing on-line monitoring system is developed so as to achieve the ability of CNC remote real-time online monitoring in different working locations. Remote real-time online monitoring of different position of the CNC is realized. The online monitoring scope of the CNC is enlarged, with more flexibility to meet the demands of practical application, meanwhile the cost of hardware investment is greatly reduced.

  5. Online Homework Put to the Test: A Report on the Impact of Two Online Learning Systems on Student Performance in General Chemistry

    Science.gov (United States)

    Eichler, Jack F.; Peeples, Junelyn

    2013-01-01

    Two different online homework systems were administered to students in a first-quarter general chemistry course. This study used a multiple regression model to control for the students' academic and socioeconomic background, and it was found that students who completed the online homework activities performed significantly better on a common…

  6. Comparison of dynamic Bayesian network approaches for online diagnosis of aircraft system

    Institute of Scientific and Technical Information of China (English)

    于劲松; 冯威; 唐荻音; 刘浩

    2016-01-01

    The online diagnosis for aircraft system has always been a difficult problem. This is due to time evolution of system change, uncertainty of sensor measurements, and real-time requirement of diagnostic inference. To address this problem, two dynamic Bayesian network (DBN) approaches are proposed. One approach prunes the DBN of system, and then uses particle filter (PF) for this pruned DBN (PDBN) to perform online diagnosis. The problem is that estimates from a PF tend to have high variance for small sample sets. Using large sample sets is computationally expensive. The other approach compiles the PDBN into a dynamic arithmetic circuit (DAC) using an offline procedure that is applied only once, and then uses this circuit to provide online diagnosis recursively. This approach leads to the most computational consumption in the offline procedure. The experimental results show that the DAC, compared with the PF for PDBN, not only provides more reliable online diagnosis, but also offers much faster inference.

  7. Research of PD on-line Monitoring System for DC Cable

    Directory of Open Access Journals (Sweden)

    Duan Da-Peng

    2014-01-01

    Full Text Available In order to monitor the insulation of XLPE cable of rail system, an On-line Partial Discharge (PD Monitoring System applied for 1500V DC cables of Shanghai Traction Substation is described, including its hardware and software structure. After installed, this system successfully detected one PD signal. The results demonstrated that this system worked stably and reliably.

  8. The Spontaneous Emergence of Social Influence in Online Systems

    CERN Document Server

    Onnela, J -P

    2009-01-01

    Social influence drives both offline and online human behaviour. It pervades cultural markets, and manifests itself in the adoption of scientific and technical innovations as well as the spread of social practices. Prior empirical work on the diffusion of innovations in spatial regions or social networks has largely focused on the spread of one particular technology among a subset of all potential adopters. It has also been difficult to determine whether the observed collective behaviour is driven by natural influence processes, or whether it follows external signals such as media or marketing campaigns. Here, we choose an online context that allows us to study social influence processes by tracking the popularity of a complete set of applications installed by the user population of a social networking site, thus capturing the behaviour of all individuals who can influence each other in this context. By extending standard fluctuation scaling methods, we analyse the collective behaviour induced by 100 million ...

  9. Online Testing of Real-time Systems Using Uppaal

    DEFF Research Database (Denmark)

    2005-01-01

    techniques. We propose the notion of relativized timed input/output conformance as the formal implementation relation. A novelty of this relation and our testing algorithm is that they explicitly take environment assumptions into account, generate, execute and verify the result online using the Uppaal on......-the-fly model-checking tool engine. A medium size case study shows promising results in terms of error detection capability and computation performance....

  10. Installation and Operation of RENO Slow Control and Online Monitoring System

    CERN Document Server

    Choi, J H; Pac, M Y; Ahn, J K; Choi, S; Choi, Y; Choi, W K; Jang, J S; Jeon, E J; Joo, K K; Kim, H S; Kim, J Y; Kim, S B; Kim, W; Kim, Y D; Lee, J; Lim, I T; Ma, K J; Park, I G; Park, J S; Park, K S; Shin, J W; K, Siyeon; Stepanyan, S S; Yeo, I S; Yu, I

    2013-01-01

    The RENO is the reactor based experiment to measure the smallest neutrino mixing angle, $\\theta_{13}$. The slow control and online monitoring system for RENO monitors the status of the HV systems, the temperatures of the electronics crates and detectors, the fluids levels, humidities of experimental halls and electronics huts, and gas concentrations. And the slow control system is able to set up high voltage for each channel and turn on and off HV remotely. An online monitoring system located in the control room reads data from the DAQ host computer via network. It provides event display, online histograms to monitor detector performance, and variety of additional tasks needed to efficiently monitor detector performance parameters and diagnose troubles of detector and DAQ system. In this paper, we explan the installation of the slow control and monitoring system and their operation status,

  11. AN EVALUATION OF THE INFORMATION SYSTEMS FOR TEACHING AND LEARNING ONLINE OF THE PUBLIC UNIVERSITY

    Directory of Open Access Journals (Sweden)

    Petcharat Pattanasethanon

    2013-01-01

    Full Text Available This research aims to evaluate the online information system for instructors and students at the undergraduate level of public Universities in Thailand. Tools and data that are collected in this research consist of two parts. The first part is the creation of a web application to educate teachers and students online, while the second part is to create a questionnaire as a tool for assessing the satisfaction of using the online surveys and a questionnaire prepared directly for the students. From collecting over 496 samples of analysis, we found that most of the students and professors that use the online information system in this group are highly satisfied. Overall, the level of significance at 0.5 was obtained from this study, which can be used as a guide for evaluating other different angle of educational activities in the future.

  12. Long-Term Effects of Recommendation on the Evolution of Online Systems

    Science.gov (United States)

    Zhao, Dan-Dan; Zeng, An; Shang, Ming-Sheng; Gao, Jian

    2013-11-01

    We employ a bipartite network to describe an online commercial system. Instead of investigating accuracy and diversity in each recommendation, we focus on studying the influence of recommendation on the evolution of the online bipartite network. The analysis is based on two benchmark datasets and several well-known recommendation algorithms. The structure properties investigated include item degree heterogeneity, clustering coefficient and degree correlation. This work highlights the importance of studying the effects and performance of recommendation in long-term evolution.

  13. Towards a Next Generation Universally Accessible ‘Online Shopping-for-Apparel’ System

    OpenAIRE

    Kristensen, Kasper; Borum, Nanna; Christiansen, Line Gad; Jepsen, Henrik Wolff; Nghia Trung Lam, Jacob; Brooks, Anthony Lewis; Petersson Brooks, Eva

    2013-01-01

    This paper reports initial research findings from on-going longitudinalparticipatory design studies within a national (Danish) funded project to realizea gesture-controlled ‘Online shopping-for-apparel’ system – A VirtualDressing Room (VDR). A product that reduces customer purchase returns, reportedly up to 40%, which is a huge burden to the clothing industries as shopping percentile of sales online continues to increase, is targeted. Three studies are reported where results cumulate to highl...

  14. How E-Learning with Second Life, an Online Virtual World Technology System, Affects Teaching and Learning

    Science.gov (United States)

    Collins, Sharon Kibbe

    2013-01-01

    Educators face challenges as they seek to ensure their online learning content is interactive, is engaging, and works well for remote learners. Second Life (SL), an online virtual world technology-based system built on Web 2.0 technology, is one approach designed to enrich online instruction and e-learning. This study involved a synthesis of…

  15. Comparing the Cultural Dimensions and Learners' Perceived Effectiveness of Online Learning Systems (OLS) among American and Malaysian Learners

    Science.gov (United States)

    Keng, Seng C.

    2010-01-01

    With the rapid and exponential growth of Internet use worldwide, online learning has become one of the most widely used learning paradigms in the education environment. Yet despite the rapidly increasing cultural diversity of online learners, few studies have investigated the effectiveness of cross-cultural Online Learning Systems (OLS) using a…

  16. Organizational Change Factors for Increasing Online Learning within a Southeastern State University System

    Science.gov (United States)

    Stone, David Edwin

    2012-01-01

    This bounded case study describes the readiness of a Southeastern State University System to support the growth of online learning. Structured as a case study, the view provided of the Southeastern State University System in this moment in time provides a contextually rich view of the phenomenon of change within a university system. The study…

  17. Benefits of Using Online Student Response Systems in Japanese EFL Classrooms

    Science.gov (United States)

    Mork, Cathrine-Mette

    2014-01-01

    Online student response systems (OSRSs) are fast replacing classroom response systems (CRSs), also known as personal or audience response systems or "clickers". OSRSs can more easily be implemented in the classroom because they are web-based and allow students to use any browser and device to do the "clicking" required to…

  18. Organizational Change Factors for Increasing Online Learning within a Southeastern State University System

    Science.gov (United States)

    Stone, David Edwin

    2012-01-01

    This bounded case study describes the readiness of a Southeastern State University System to support the growth of online learning. Structured as a case study, the view provided of the Southeastern State University System in this moment in time provides a contextually rich view of the phenomenon of change within a university system. The study…

  19. 75 FR 56112 - Integrated Food Safety System Online Collaboration Development-Cooperative Agreement With the...

    Science.gov (United States)

    2010-09-15

    ... HUMAN SERVICES Food and Drug Administration Integrated Food Safety System Online Collaboration... information sharing in the development of an integrated food safety system, and the development and... House Food Safety Working Group Objectives to integrate the food safety system at all levels....

  20. An Online Booking System Encourages Self-Directed Learning and Personalization of Study

    Science.gov (United States)

    Gaynor, James W.; Brown, Duncan

    2012-01-01

    Collaboration between the chemistry and computing services departments was undertaken to create an online booking system to be used as a learning and teaching aid in an undergraduate chemistry lab course. The system helped promote personalization of study and could be easily adapted to any department within the university. The system was…

  1. Development of the Defense Documentation Center Remote On-Line Retrieval System - Past, Present and Future.

    Science.gov (United States)

    Bennertz, Richard K.

    The document highlights in nontechnical language the development of the Defense Documentation Center (DDC) Remote On-Line Retrieval System from its inception in 1967 to what is planned. It describes in detail the current operating system, equipment configuration and associated costs, user training and system evaluation and may be of value to other…

  2. Developing an online collaborative system within the domain of financial auditing

    Directory of Open Access Journals (Sweden)

    Pavel Năstase

    2015-05-01

    Full Text Available The research paper, focused on a rather technical approach, has the goal to design a system that brings together diverse audit stakeholders and investigates how an audit database available online can be implemented in SharePoint, as part of an on-line audit system which is collaborative and national. The online audit database covers various information needs for both financial auditors and the employees of the Chamber of Financial Auditors of Romania. For rapid deployment, we used various tools: Microsoft SQL Server 2008 R2, SharePoint Server 2010, SharePoint Designer 2010 and various implementation features: external content types, external lists, business data web parts etc. In this paper, we use two research methods: the first one is empiric, based on formulating a questionnaire and the interpretation of the results, while the second is the analysis of the implementation process by using a step-by-step approach. The online audit database stores information about the results of previous audits, the opinions issued as result of audits, the results of online electronic inspections, audit firms, audited entities, risks identified etc. The conclusion was that the online database, which is updated through Internet, is feasible to implement in SharePoint, for multiple audit stakeholders including financial auditors who can sell their financial audit services benefiting from the transparency that the system provides.

  3. Pyrame, a rapid-prototyping framework for online systems

    Science.gov (United States)

    Magniette, Frédéric; Rubio-Roy, Miguel; Thiant, Floris

    2015-12-01

    The present work reports on the software Pyrame, an open-source online framework designed with high-energy physics applications in mind and providing a light-weight, distributed, stable, performant and easy-to-deploy solution. Pyrame is a data-acquisition chain, a data- exchange network protocol and a wide set of drivers allowing the control of hardware components. Data-acquisition throughput is on the order of 4 Gb/s for memory to memory acquisitions and Pyrame protocol overhead is about 50 µs per command/response using the stock tools.

  4. Construction of Powerful Online Search Expert System Based on Semantic Web

    Directory of Open Access Journals (Sweden)

    Yasser A. Nada

    2013-01-01

    Full Text Available In this paper we intends to build an expert system based on semantic web for online search using XML, to help users to find the desired software, and read about its features and specifications. The expert system saves user's time and effort of web searching or buying software from available libraries. Building online search expert system is ideal for capturing support knowledge to produce interactive on-line systems that provide searching details, situation-specific advice exactly like setting a session with an expert. Any person can access this interactive system from his web browser and get some questions answer in addition to precise advice which was provided by an expert. The system can provide some troubleshooting diagnose, find the right products; … Etc. The proposed system further combines aspects of three research topics (Semantic Web, Expert System and XML. Semantic web Ontology will be considered as a set of directed graphs where each node represents an item and the edges denote a term which is related to another term. Organizations can now optimize their most valuable expert knowledge through powerful interactive Web-enabled knowledge automation expert system. Online sessions emulate a conversation with a human expert asking focused questions and producing customized recommendations and advice. Hence, the main powerful point of the proposed expert system is that the skills of any domain expert will be available to everyone.

  5. The Online Histogram Presenter for the ATLAS experiment a modular system for histogram visualization

    CERN Document Server

    Dotti, A; Vitillo, R A

    2010-01-01

    The Online Histogram Presenter (OHP) is the ATLAS tool to display histograms produced by the online monitoring system. In spite of the name, the Online Histogram Presenter is much more than just a histogram display. To cope with the large amount of data, the application has been designed to minimise the network traffic; sophisticated caching, hashing and filtering algorithms reduce memory and CPU usage. The system uses Qt and ROOT for histogram visualisation and manipulation. In addition, histogram visualisation can be extensively customised through configuration files. Finally, its very modular architecture features a lightweight plug-in system, allowing extensions to accommodate specific user needs. After an architectural overview of the application, the paper is going to present in detail the solutions adopted to increase the performance and a description of the plug-in system.

  6. The Online Histogram Presenter for the ATLAS experiment: A modular system for histogram visualization

    Science.gov (United States)

    Dotti, Andrea; Adragna, Paolo; Vitillo, Roberto A.

    2010-04-01

    The Online Histogram Presenter (OHP) is the ATLAS tool to display histograms produced by the online monitoring system. In spite of the name, the Online Histogram Presenter is much more than just a histogram display. To cope with the large amount of data, the application has been designed to minimise the network traffic; sophisticated caching, hashing and filtering algorithms reduce memory and CPU usage. The system uses Qt and ROOT for histogram visualisation and manipulation. In addition, histogram visualisation can be extensively customised through configuration files. Finally, its very modular architecture features a lightweight plug-in system, allowing extensions to accommodate specific user needs. After an architectural overview of the application, the paper is going to present in detail the solutions adopted to increase the performance and a description of the plug-in system.

  7. Online maintenance policy for a deteriorating system with random change of mode

    Energy Technology Data Exchange (ETDEWEB)

    Saassouh, B. [Laboratoire de Modelisation et Surete des Systemes, Institut Charles Delaunay-FRE CNRS 2848, Universite de Technologie de Troyes, 12, rue Marie Curie-BP 2060, 10010 Troyes Cedex (France); Dieulle, L. [Laboratoire de Modelisation et Surete des Systemes, Institut Charles Delaunay-FRE CNRS 2848, Universite de Technologie de Troyes, 12, rue Marie Curie-BP 2060, 10010 Troyes Cedex (France); Grall, A. [Laboratoire de Modelisation et Surete des Systemes, Institut Charles Delaunay-FRE CNRS 2848, Universite de Technologie de Troyes, 12, rue Marie Curie-BP 2060, 10010 Troyes Cedex (France)]. E-mail: antoine.grall@utt.fr

    2007-12-15

    Most of maintenance policies proposed in the literature for gradually deteriorating systems, consider a stationary deterioration process. This paper is an attempt to take into account stochastically deteriorating systems which are subject to a sudden change in their degradation process. A technical device subject to gradual degradation is considered. It is assumed that the level of degradation can be resumed by a single scalar variable. An online maintenance decision rule is proposed, which makes it possible to take into account in real time the online information available on the operating mode of the system as well as its actual deterioration level. We show the efficiency of considering online decision rules for maintenance with respect to traditional maintenance policies based on a static alarm threshold. Numerical simulations are given, to assess and optimize the performance of the maintained system from its asymptotic unavailability point of view. It is compared to the results obtained with classical control-limit maintenance policies.

  8. Modular Online Uninterruptible Power System Plug’n’Play Control and Stability Analysis

    DEFF Research Database (Denmark)

    Zhang, Chi; Coelho, Ernane A. A.; Guerrero, Josep M.;

    2016-01-01

    to achieve active and reactive power sharing and central controllers to maintain synchronization capability, which allows the online UPS modular system having faster dynamic performance according to the Standard IEC 62040-3. A detailed small signal mathematical model was developed in order to analyze......In this paper, a plug`n'play control strategy proposed for modular online UPS system is presented, which allows to plug the UPS modules in or out randomly. This provides a less difficulty for the maintenance of the whole system. A two-level control scheme was proposed, including local controllers...... the proposed modular online UPS system. Experimental results and data are presented to validate the stability analysis and support the proposed plug`n'play control feasibility....

  9. First Field Experience of On-line Partial Discharge Monitoring of MV Cable Systems with location

    Energy Technology Data Exchange (ETDEWEB)

    Van der Wielen, P.; Steennis, F.

    2009-06-15

    A new measuring system is presented for the on-line monitoring and location of partial discharges (PDs) in medium-voltage power cables. The system uses two inductive sensors, each at one cable end. The measuring system is called PD-OL, which stands for PD detection Online with Location. A pulse injection system is used for the time synchronization of the data intake at both cable ends and for the on-line calibration. PD data is send via internet to the KEMA Control Center for interpretation and final presentation, made visible on a secured website for the network owners. This paper discusses the basics of PD-OL and a number of measurement results.

  10. An Information System to Access Status Information of the LHCb Online

    Science.gov (United States)

    Frank, M.; Gaspar, C.

    2012-12-01

    The LHCb collaboration consists of roughly 700 physicists from 52 institutes and universities. Most of the collaborating physicists - including subdetector experts - are not permanently based at CERN. This paper describes the architecture used to publish data internal to the LHCb experiment control- and data acquisition system to the World Wide Web. Collaborators can access the online (sub-) system status and the system performance directly from the institute abroad, from home or from a smart phone without the need of direct access to the online computing infrastructure.

  11. The design and implementation of on-line monitoring system for UHV compact shunt capacitors

    Science.gov (United States)

    Tao, Weiliang; Ni, Xuefeng; Lin, Hao; Jiang, Shengbao

    2017-08-01

    Because of the large capacity and compact structure of the UHV compact shunt capacitor, it is difficult to take effective measures to detect and prevent the faults. If the fault capacitor fails to take timely maintenance, it will pose a threat to the safe operation of the system and the life safety of the maintenance personnel. The development of UHV compact shunt capacitor on-line monitoring system can detect and record the on-line operation information of UHV compact shunt capacitors, analyze and evaluate the early fault warning signs, find out the fault capacitor or the capacitor with fault symptom, to ensure safe and reliable operation of the system.

  12. On-line identification of hybrid systems using an adaptive growing and pruning RBF neural network

    DEFF Research Database (Denmark)

    Alizadeh, Tohid

    2008-01-01

    This paper introduces an adaptive growing and pruning radial basis function (GAP-RBF) neural network for on-line identification of hybrid systems. The main idea is to identify a global nonlinear model that can predict the continuous outputs of hybrid systems. In the proposed approach, GAP......-RBF neural network uses a modified unscented kalman filter (UKF) with forgetting factor scheme as the required on-line learning algorithm. The effectiveness of the resulting identification approach is tested and evaluated on a simulated benchmark hybrid system....

  13. volBrain: an online MRI brain volumetry system

    Directory of Open Access Journals (Sweden)

    Jose V. Manjon

    2016-07-01

    Full Text Available The amount of medical image data produced in clinical and research settings is rapidly growing resulting in vast amount of data to analyze. Automatic and reliable quantitative analysis tools, including segmentation, allow to analyze brain development and to understand specific patterns of many neurological diseases. This field has recently experienced many advances with successful techniques based on non-linear warping and label fusion. In this work we present a novel and fully automatic pipeline for volumetric brain analysis based on multi-atlas label fusion technology that is able to provide accurate volumetric information at different levels of detail in a short time. This method is available through the volBrain online web interface (http://volbrain.upv.es, which is publically and freely accessible to the scientific community. Our new framework has been compared with current state-of-the-art methods showing very competitive results.

  14. Automatic Learning of Fine Operating Rules for Online Power System Security Control.

    Science.gov (United States)

    Sun, Hongbin; Zhao, Feng; Wang, Hao; Wang, Kang; Jiang, Weiyong; Guo, Qinglai; Zhang, Boming; Wehenkel, Louis

    2016-08-01

    Fine operating rules for security control and an automatic system for their online discovery were developed to adapt to the development of smart grids. The automatic system uses the real-time system state to determine critical flowgates, and then a continuation power flow-based security analysis is used to compute the initial transfer capability of critical flowgates. Next, the system applies the Monte Carlo simulations to expected short-term operating condition changes, feature selection, and a linear least squares fitting of the fine operating rules. The proposed system was validated both on an academic test system and on a provincial power system in China. The results indicated that the derived rules provide accuracy and good interpretability and are suitable for real-time power system security control. The use of high-performance computing systems enables these fine operating rules to be refreshed online every 15 min.

  15. Overview of RepLab 2013: Evaluating online reputation monitoring systems

    NARCIS (Netherlands)

    Amigó, E.; Carrillo de Albornoz, J.; Chugur, I.; Corujo, A.; Gonzalo, J.; Martín, T.; Meij, E.; de Rijke, M.; Spina, D.

    2013-01-01

    This paper summarizes the goals, organization, and results of the second RepLab competitive evaluation campaign for Online Reputation Management Systems (RepLab 2013). RepLab focused on the process of monitoring the reputation of companies and individuals, and asked participant systems to annotate

  16. Overview of RepLab 2012: Evaluating Online Reputation Management Systems

    NARCIS (Netherlands)

    Amigó, E.; Corujo, A.; Gonzalo, J.; Meij, E.; de Rijke, M.

    2012-01-01

    This paper summarizes the goals, organization and results of the first RepLab competitive evaluation campaign for Online Reputation Management Systems (RepLab 2012). RepLab focused on the reputation of companies, and asked participant systems to annotate different types of information on tweets

  17. A context driven information retrieval for online urban disaster management system

    OpenAIRE

    Zreik, Khaldoun; Parfouru, Samuel

    2005-01-01

    @inproceedings{CI-ZREIK-2005-3, author = {Zreik, K.}, title = {A context driven information retrieval for online urban disaster management system}, booktitle = {Third International Conference on Innovation in Architecture, Engineering and Construction (AEC'05)}, year = {2005}, address = {Rotterdam, The Netherlands}, month = {june} }; International audience; Most of Disaster Managing Approaches depends firmly on information and communication management system. Due to the advances in Informatio...

  18. Online Fault Location on AC Cables in Underground Transmission Systems using Sheath Currents

    DEFF Research Database (Denmark)

    Jensen, Christian Flytkjær; Nanayakkarab, Kasun; Rajapakse, Athula

    2014-01-01

    This paper studies online travelling wave methods for fault location on a crossbonded cable system using sheath currents. During the construction of the electrical connection to the 400 MW off shore wind farm Anholt, it was possible to perform measurements on a 38.4 km crossbonded cable system. A...

  19. Online fault location on AC cables in underground transmission systems using screen currents

    DEFF Research Database (Denmark)

    Jensen, Christian Flytkjær; Nanayakkara, O.M.K.K; Rajapakse, Athula

    This paper studies online travelling wave methods for fault location on a crossbonded cable system using screen currents. During the construction of the electrical connection to the 400 MW off shore wind farm Anholt, it was possible to perform measurements on a 38.4 km crossbonded cable system. A...

  20. Comparative Effectiveness of CAPA and FOCUS Online: Career Assessment Systems with Undecided College Students

    Science.gov (United States)

    Betz, Nancy E.; Borgen, Fred H.

    2009-01-01

    The present study compared the effectiveness of two online career exploration systems in increasing the career decision self-efficacy and decidedness of 960 students enrolled in a program for undecided freshmen students at a large public university. Results indicated that both systems led to significant increases in career decision self-efficacy…

  1. Design and Develop Online Monitoring and Early-warning System of Crane Structural Stress

    Institute of Scientific and Technical Information of China (English)

    XU Huping; LIN Weiguo; XU Changsheng

    2006-01-01

    This paper proposed an online monitoring and early-warning system of dynamic stress of crane metal structure, and designed this system's hardware, including sensor unit, data gathering unit, and controlling & processing unit of this system, and discussed the waterproof protection for resistance strain wafer and scheme of data gathering and transmission of dynamic strain gauge, moreover developed system software of real-time and online monitoring dynamic stress, including data gathering by DLL and data display & processing based on Visual C++. The system applies the dynamic strain gauge to gather the data of the stress, and communicates between PLC control system of crane and upper industrial computer, so that realize the real-time online monitoring and early-warning for crane's metal structure stress. The test results show this system carry on real time and online monitoring to dynamic stress of load-bearing metal structure longly and stability, and can give an alarm and overload protection on time. So the system has good practice value.

  2. Findings from an Independent Evaluation of the AMNH's Online Seminars on Science Course: "The Solar System"

    Science.gov (United States)

    Inverness Research, 2009

    2009-01-01

    Inverness Research studied the American Museum of Natural History (AMNH) Seminars on Science program for eight years, from its inception in 1998 to 2006. In 2009, Inverness Research conducted additional studies of the AMNH's new online course, The Solar System. This paper presents teacher survey ratings for The Solar System, along with profiles of…

  3. Development and Application of On-line Wind Power Risk Assessment System

    Institute of Scientific and Technical Information of China (English)

    2012-01-01

    Because of the large-scale integration of wind power, the dynamic characteristics of power system have many uncertain effects. Based on deterministic analysis methods, traditional on-line security assessment system cannot quantitatively estimate the actual operating conditions of the power system for only considering the most serious and credible accidents. Therefore, the risk theory is introduced into an on-line security assessment system and then an on-line risk assessment dynamic security assessment system system for wind power is designed Based on multiple data integration, and implemented by combining with the the wind power disturbance probability is available and the security assessment of the power grid can obtain security indices in different aspects. The operating risk index is an expectation of severity, computed by summing up all the products of the result probability and its severity. Analysis results are reported to the dispatchers in on-line environment, while the comprehensive weak links are automatically provided to the power dispatching center. The risk assessment system in operation can verify the reasonableness of the system.

  4. Findings from an Independent Evaluation of the AMNH's Online Seminars on Science Course: "The Solar System"

    Science.gov (United States)

    Inverness Research, 2009

    2009-01-01

    Inverness Research studied the American Museum of Natural History (AMNH) Seminars on Science program for eight years, from its inception in 1998 to 2006. In 2009, Inverness Research conducted additional studies of the AMNH's new online course, The Solar System. This paper presents teacher survey ratings for The Solar System, along with profiles of…

  5. AN APPROACH TO ONLINE LEARNING USING LEARNING MANAGEMENT SYSTEM IN HIGHER EDUCATION INSTITUTION

    Directory of Open Access Journals (Sweden)

    Sartika Kurniali

    2014-01-01

    Full Text Available When higher education institutions want to offer online learning program they need to overcome various constraints. One of them is the system. The Learning Management System (LMS discussed is a web-based system developed and implemented in-house for a private university with a purpose to enable its new online learning program. The program differs from the regular face to face program since it is dominated with online classes. The LMS was designed and implemented to provide the right solution. The LMS succeed to facilitate students and lecturers in obtaining academic information and learning process anytime, anywhere via the internet. Since most of the time the students don’t come to the campus. In this study we explore the findings, discuss issues in the research, suggest how these results may foster improvement and give an input for other higher education institutions.

  6. STUDENTS’ ATTITUDES TOWARDS THE DEVELOPMENT OF AN ONLINE GUIDANCE COUNSELING SYSTEM

    Directory of Open Access Journals (Sweden)

    John Audi Perillo Bato

    2016-12-01

    Full Text Available Information and communication technology (ICT impacts the guidance counseling services (GCS in many higher education institutions (HEIs. However, many HEIs are experiencing the digital gap most especially in bridging ICT and GCS. This paper aims to measure the attitudes towards the development of an online guidance counseling system in a private university in the Philippines. All respondents are tertiary students during the 1st semester of the academic year 2014-2015 in a total of 348. An adapted survey questionnaire was used. The study shows that despite the students underutilizing the GCS, these students show positive attitudes towards the proposed system. The result implies that these students are capable of adapting to an online environment as an alternative to a face-to-face counseling setup. Based on the results, developing an online guidance counseling system is a promising initiative for this university.

  7. Application of Knowledge Based Systems for Child Performance Analysis in an Online Montessori Management System

    Directory of Open Access Journals (Sweden)

    Siti Hajar Khairuddin

    2012-01-01

    Full Text Available This paper focuses on the application of knowledge based systems for child performance analysis in an online Montessori module. Using knowledge based techniques, the system generates an automatic analysis based on the teacher's answers to a variety of questions about a child's performance of a specific Montessori activity. The questions were created through a study of the criteria used to assess the level of a child's performance and achievement. This prototype is designed as a proof-of-concept, to show how the knowledge base technique could be applied. To design the prototype, we conducted literature reviews on the delivery of Montessori methods and the knowledge base technique, and compared rule -based and case -based reasoning.  We selected rule-based reasoning for the concept prototype since it is suitable for Montessori activities which are well defined and easy to acquire.

  8. Teachers in an online earth systems science course: Mediating tensions of resistance and reproduction

    Science.gov (United States)

    Downey-Skochdopole, Laura

    This study explored the perceptions and experiences of teacher participants in an online Earth Science Systems course that took place in the fall of 2004. The teacher participants in this study engaged in a course that was designed to foster increased conceptual understandings of the interrelationships existing in earth systems, while modeling and promoting constructivist pedagogies. Utilizing a case study approach, with theoretical underpinnings of constructivism, critical theory and sociocultural theory, the researcher explored elements of reproduction and resistance to traditional power structures within school settings as related to the teachers' beliefs as well as the mediations the teacher participants underwent while engaging within this constructivist-based online Earth Science Systems course. Tensions resulting from deeply entrenched beliefs about teaching and learning were deconstructed within the study and explorations of roles of power as they impact the social setting of the course are utilized to make meaning of the teacher participants' experiences. This study suggests that constructivist pedagogies can be applied with success in an online learning setting. This study further suggests that there is a need for both technological enhancements within online course designs as well as application of emancipatory teaching strategies to fully realize the potential of constructivist-based online learning environments for teachers.

  9. 76 FR 34122 - 30-Day Notice of Proposed Information Collection: NEA/PI Online Performance Reporting System (PRS)

    Science.gov (United States)

    2011-06-10

    ... Notice of Proposed Information Collection: NEA/PI Online Performance Reporting System (PRS) ACTION... Collection: NEA/PI Online Performance Reporting System (PRS). OMB Control Number: 1405-0183. Type of Request... and standardized manner. The MEPI Performance Reporting System (PRS) enables enhanced monitoring...

  10. Exploring Online Learning at Primary Schools: Students' Perspectives on Cyber Home Learning System through Video Conferencing (CHLS-VC)

    Science.gov (United States)

    Lee, June; Yoon, Seo Young; Lee, Chung Hyun

    2013-01-01

    The purposes of the study are to investigate CHLS (Cyber Home Learning System) in online video conferencing environment in primary school level and to explore the students' responses on CHLS-VC (Cyber Home Learning System through Video Conferencing) in order to explore the possibility of using CHLS-VC as a supportive online learning system. The…

  11. Optical disk toxic information online system at Sumitomo Chemical Co. through telecommunication network in Japan

    Science.gov (United States)

    Kishida, Fumio; Omodaka, Hisakata; Ishihara, Koichiro; Yamada, Yoshinori; Kato, Hiromi

    Toxicity data about several hundred chemicals, handled and commercialized by Sumitomo Chemical Co., have been collected and estimated. These data are stored in an optical disk filing system "sanfile 8500D". Because the system is mounted with a keyword input panel "Word selecter", information retrieval system is simplified but precised. Online system through telecommunication network is extended between Sumitomo Chemical's works, laboratories, and others. Image informations are mailed from installed facsimili in sanfile 8500D directly.

  12. On-line digestion system for protein characterization and proteome analysis.

    Science.gov (United States)

    López-Ferrer, Daniel; Petritis, Konstantinos; Lourette, Natacha M; Clowers, Brian; Hixson, Kim K; Heibeck, Tyler; Prior, David C; Pasa-Tolić, Ljiljana; Camp, David G; Belov, Mikhail E; Smith, Richard D

    2008-12-01

    An efficient on-line digestion system that reduces the number of sample manipulation steps has been demonstrated for high-throughput proteomics. By incorporating a pressurized sample loop into a liquid chromatography-based separation system, both sample and enzyme (e.g., trypsin) can be simultaneously introduced to produce a complete, yet rapid digestion. Both standard proteins and a complex Shewanella oneidensis global protein extract were digested and analyzed using the automated online pressurized digestion system coupled to an ion mobility time-of-flight mass spectrometer, an ion trap mass spectrometer, or both. The system denatured, digested, and separated product peptides in a manner of minutes, making it amenable to on-line high-throughput applications. In addition to simplifying and expediting sample processing, the system was easy to implement and no cross-contamination was observed among samples. As a result, the online digestion system offers a powerful approach for high-throughput screening of proteins that could prove valuable in biochemical research (rapid screening of protein-based drugs).

  13. Towards a Next Generation Universally Accessible ‘Online Shopping-for-Apparel’ System

    DEFF Research Database (Denmark)

    Kristensen, Kasper; Borum, Nanna; Christiansen, Line Gad

    2013-01-01

    This paper reports initial research findings from on-going longitudinal participatory design studies within a national (Danish) funded project to realize a gesture-controlled ‘Online shopping-for-apparel’ system – A Virtual Dressing Room (VDR). A product that reduces customer purchase returns......, reportedly up to 40%, which is a huge burden to the clothing industries as shopping percentile of sales online continues to increase, is targeted. Three studies are reported where results cumulate to highlight the need for continued research to realize a next-generation system to improve the user experience...... of online shopping for apparel where conclusions point to the need for adaptive user interface improvements. Unforeseen was that wheelchair-bound public especially responded positively to the potentials for the concept due to their limited mobility in shopping and this accessibility aspect can...

  14. Scientific Comparison of Different Online Heart Rate Monitoring Systems

    Directory of Open Access Journals (Sweden)

    Martin Schönfelder

    2011-01-01

    Full Text Available Recent technical development focused on real-time heart rate monitoring instead of postexercise evaluation of recorded data. There are several systems on the market that allow direct and real-time monitoring of several individuals at the same time. The present study compared the systems of Polar, Acentas, Activio, and Suunto in a field test with twelve subjects regarding failure quota, operating distance, and ECG validity. Moreover, the installation and use of software and hardware were evaluated with a quality rating system. Chest belts were evaluated with a questionnaire, too. Overall the system of Acentas reached the best mark of all systems, but detailed results showed that every system has its advantages and disadvantages depending on using purpose, location, and weather. So this evaluation cannot recommend a single system but rather shows strength and weakness of all systems and additionally can be used for further system improvements.

  15. Design and implementation of an online systemic human anatomy course with laboratory.

    Science.gov (United States)

    Attardi, Stefanie M; Rogers, Kem A

    2015-01-01

    Systemic Human Anatomy is a full credit, upper year undergraduate course with a (prosection) laboratory component at Western University Canada. To meet enrollment demands beyond the physical space of the laboratory facility, a fully online section was developed to run concurrently with the traditional face to face (F2F) course. Lectures given to F2F students are simultaneously broadcasted to online students using collaborative software (Blackboard Collaborate). The same collaborative software is used by a teaching assistant to deliver laboratory demonstrations in which three-dimensional (3D) virtual anatomical models are manipulated. Ten commercial software programs were reviewed to determine their suitability for demonstrating the virtual models, resulting in the selection of Netter's 3D Interactive Anatomy. Supplementary online materials for the central nervous system were developed by creating 360° images of plastinated prosected brain specimens and a website through which they could be accessed. This is the first description of a fully online undergraduate anatomy course with a live, interactive laboratory component. Preliminary data comparing the online and F2F student grades suggest that previous student academic performance, and not course delivery format, predicts performance in anatomy. Future qualitative studies will reveal student perceptions about their learning experiences in both of the course delivery formats.

  16. Online Real-Time Tribology Failure Detection System Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Under NASA Phase I funding, we have developed a system for the ball bearing fault detection and identification. Our system can effectively identify multiple fault...

  17. Online Delay-Evaluation Control for Networked Control Systems

    Institute of Scientific and Technical Information of China (English)

    马向华; 魏震; 谢剑英

    2003-01-01

    This paper presented an evaluation approach of time delays for networked control systems (NCS). Animproved scheme based on optimal LQG control was designed to achieve desired performance despite the uncertaindelays in the system. The experimental results illustrate the effectiveness of the proposed control design and satis-factory performance of the closed-loop system.

  18. Plug-and-Play Control – Modifying Control Systems Online

    DEFF Research Database (Denmark)

    Bendtsen, Jan Dimon; Trangbæk, K; Stoustrup, Jakob

    2013-01-01

    Often, when new sensor or actuator hardware be- comes available for use in a control system, it is desirable to retain the existing control system and apply the new control capabilities in a gradual fashion rather than decommissioning the entire existing system and replacing it with an altogether...... new control system. However, this requires that the existing controller remains in action, and the new control law component is added to the existing system. This paper formally introduces the concept of Plug-and-Play control and proposes two different methods of introducing new control components...... in a smooth manner, providing stability guarantees during the transition phase as well as retaining the original control structure. The applicability of the methods is illustrated on two different practical example systems, a livestock stable climate control system and a laboratory-scale model of a district...

  19. An Interval Type-2 Neural Fuzzy System for Online System Identification and Feature Elimination.

    Science.gov (United States)

    Lin, Chin-Teng; Pal, Nikhil R; Wu, Shang-Lin; Liu, Yu-Ting; Lin, Yang-Yin

    2015-07-01

    We propose an integrated mechanism for discarding derogatory features and extraction of fuzzy rules based on an interval type-2 neural fuzzy system (NFS)-in fact, it is a more general scheme that can discard bad features, irrelevant antecedent clauses, and even irrelevant rules. High-dimensional input variable and a large number of rules not only enhance the computational complexity of NFSs but also reduce their interpretability. Therefore, a mechanism for simultaneous extraction of fuzzy rules and reducing the impact of (or eliminating) the inferior features is necessary. The proposed approach, namely an interval type-2 Neural Fuzzy System for online System Identification and Feature Elimination (IT2NFS-SIFE), uses type-2 fuzzy sets to model uncertainties associated with information and data in designing the knowledge base. The consequent part of the IT2NFS-SIFE is of Takagi-Sugeno-Kang type with interval weights. The IT2NFS-SIFE possesses a self-evolving property that can automatically generate fuzzy rules. The poor features can be discarded through the concept of a membership modulator. The antecedent and modulator weights are learned using a gradient descent algorithm. The consequent part weights are tuned via the rule-ordered Kalman filter algorithm to enhance learning effectiveness. Simulation results show that IT2NFS-SIFE not only simplifies the system architecture by eliminating derogatory/irrelevant antecedent clauses, rules, and features but also maintains excellent performance.

  20. Intelligent Case Based Decision Support System for Online Diagnosis of Automated Production System

    Science.gov (United States)

    Ben Rabah, N.; Saddem, R.; Ben Hmida, F.; Carre-Menetrier, V.; Tagina, M.

    2017-01-01

    Diagnosis of Automated Production System (APS) is a decision-making process designed to detect, locate and identify a particular failure caused by the control law. In the literature, there are three major types of reasoning for industrial diagnosis: the first is model-based, the second is rule-based and the third is case-based. The common and major limitation of the first and the second reasonings is that they do not have automated learning ability. This paper presents an interactive and effective Case Based Decision Support System for online Diagnosis (CB-DSSD) of an APS. It offers a synergy between the Case Based Reasoning (CBR) and the Decision Support System (DSS) in order to support and assist Human Operator of Supervision (HOS) in his/her decision process. Indeed, the experimental evaluation performed on an Interactive Training System for PLC (ITS PLC) that allows the control of a Programmable Logic Controller (PLC), simulating sensors or/and actuators failures and validating the control algorithm through a real time interactive experience, showed the efficiency of our approach.

  1. Diagnosis of Skin Diseases using Online Expert System

    Directory of Open Access Journals (Sweden)

    Muhammad Zubair Asghar

    2011-06-01

    Full Text Available This paper describes Expert System (ES for diagnosis and management of skin diseases. More than 13 types of skin diseases can be diagnosed and treated by our system. It is rule based web-supported expert system, assisting skin specialists, medical students doing specialization in dermatology, researchers as well as skin patients having computer know-how. System was developed with Java Technology. The expert rules were developed on the symptoms of each type of skin disease, and they were presented using tree-graph and inferred using forward-chaining with depth-first search method. User interaction with system is enhanced with efficient user interfaces. The web based expert system described in this paper can detect and give early diagnosis of thirteen plus skin diseases. This ES can be extended to diagnose all types of skin-diseases.

  2. Online Learning Management Systems (LMS) and Sense of Community: A Pre-Service Practicum Perspective

    Science.gov (United States)

    Rideout, Glenn; Bruinsma, Robert; Hull, John; Modayil, Jacob

    2007-01-01

    This paper examines the impact of the implementation of an online learning management system (LMS) on pre­-service teachers during their major pre-­service practicum. The LMS enabled students to remain connected to peers, professors, and supervisors while new relationships were formed with in­school personnel such as mentor teachers, principals,…

  3. A Phenomenological Study of Gifted Adolescents and Their Engagement with One On-Line Learning System

    Science.gov (United States)

    Swicord, Barbara

    2010-01-01

    Little research exists on the nature of the interactions between gifted students and the use of technology. Furthermore, no research has investigated the phenomenon of gifted adolescents using one internet-based program, the Renzulli Learning System (RLS). Renzulli Learning is an on-line educational profile with a matching database that provides…

  4. Measuring Malaysia School Resource Centers' Standards through iQ-PSS: An Online Management Information System

    Science.gov (United States)

    Zainudin, Fadzliaton; Ismail, Kamarulzaman

    2010-01-01

    The Ministry of Education has come up with an innovative way to monitor the progress of 9,843 School Resource Centers (SRCs) using an online management information system called iQ-PSS (Quality Index of SRC). This paper aims to describe the data collection method and analyze the current state of SRCs in Malaysia and explain how the results can be…

  5. A Mixed-Methods Assessment of Using an Online Commercial Tutoring System to Teach Introductory Statistics

    Science.gov (United States)

    Xu, Yonghong Jade; Meyer, Katrina A.; Morgan, Dianne D.

    2009-01-01

    This study used a mixed-methods approach to evaluate a hybrid teaching format that incorporated an online tutoring system, ALEKS, to address students' learning needs in a graduate-level introductory statistics course. Student performance in the hybrid course with ALEKS was found to be no different from that in a course taught in a traditional…

  6. Facilitating Metacognitive Processes of Academic Genre-Based Writing Using an Online Writing System

    Science.gov (United States)

    Yeh, Hui-Chin

    2015-01-01

    Few studies have investigated how metacognitive processes foster the application of genre knowledge to students' academic writing. This is largely due to its internal and unobservable characteristics. To bridge this gap, an online writing system based on metacognition, involving the stages of planning, monitoring, evaluating, and revising, was…

  7. State of the art analysis of online fault location on AC cables in underground transmission systems

    DEFF Research Database (Denmark)

    Jensen, Christian Flytkjær; Gudmundsdottir, Unnur Stella; Bak, Claus Leth

    2011-01-01

    In this article the state of the art research for online fault location on cross-bonded transmission level cables is presented. The article is focused on the difficulties in using the algorithms developed for OHL-systems and distribution cables directly on cross-bonded transmission cables. Impeda...

  8. Understanding the Online Informal Learning of English as a Complex Dynamic System: An Emic Approach

    Science.gov (United States)

    Sockett, Geoffrey

    2013-01-01

    Research into the online informal learning of English has already shown it to be a widespread phenomenon involving a range of comprehension and production activities such as viewing original version television series, listening to music on demand and social networking with other English users. Dynamic systems theory provides a suitable framework…

  9. Developing Communication Competence Using an Online Video Reflection System: Pre-Service Teachers' Experiences

    Science.gov (United States)

    Bower, Matt; Cavanagh, Michael; Moloney, Robyn; Dao, MingMing

    2011-01-01

    This paper reports on how the cognitive, behavioural and affective communication competencies of undergraduate students were developed using an online Video Reflection system. Pre-service teachers were provided with communication scenarios and asked to record short videos of one another making presentations. Students then uploaded their videos to…

  10. Assessment of corrosion in the flue gas cleaning system using on-line monitoring

    DEFF Research Database (Denmark)

    Montgomery, Melanie; Vendelbo Nielsen, Lars; Berggreen Petersen, Michael

    2015-01-01

    products/deposits were detected. An on-line corrosion measurement system was established to determine corrosion mechanisms. It was revealed that many shutdowns/start-ups of the plant influence corrosion and result in decreased lifetime of components and increased maintenance. The change of fuel from...

  11. Developing Adaptable Online Information Literacy Modules for a Learning Management System

    Science.gov (United States)

    Mune, Christina; Goldman, Crystal; Higgins, Silke; Eby, Laurel; Chan, Emily K.; Crotty, Linda

    2015-01-01

    Higher education institutions increasingly utilize learning management systems (LMS) to teach courses and programs in hybrid or online-only formats. Providing information literacy instruction in these emerging digital environments poses challenges to librarians as the delivery of instruction requires familiarity with navigating an LMS and…

  12. The Construction of an Online Competitive Game-Based Learning System for Junior High School Students

    Science.gov (United States)

    Cheng, Yuh-Ming; Kuo, Sheng-Huang; Lou, Shi-Jer; Shih, Ru-Chu

    2012-01-01

    The purpose of this study aimed to construct an online competitive game-based learning system by using freeware for junior high school students and to assess its effectiveness. From the learning standpoints, game mechanisms including learning points, competition mechanism, training room mechanism, questioning & answering mechanism, tips, and…

  13. A policy iteration approach to online optimal control of continuous-time constrained-input systems.

    Science.gov (United States)

    Modares, Hamidreza; Naghibi Sistani, Mohammad-Bagher; Lewis, Frank L

    2013-09-01

    This paper is an effort towards developing an online learning algorithm to find the optimal control solution for continuous-time (CT) systems subject to input constraints. The proposed method is based on the policy iteration (PI) technique which has recently evolved as a major technique for solving optimal control problems. Although a number of online PI algorithms have been developed for CT systems, none of them take into account the input constraints caused by actuator saturation. In practice, however, ignoring these constraints leads to performance degradation or even system instability. In this paper, to deal with the input constraints, a suitable nonquadratic functional is employed to encode the constraints into the optimization formulation. Then, the proposed PI algorithm is implemented on an actor-critic structure to solve the Hamilton-Jacobi-Bellman (HJB) equation associated with this nonquadratic cost functional in an online fashion. That is, two coupled neural network (NN) approximators, namely an actor and a critic are tuned online and simultaneously for approximating the associated HJB solution and computing the optimal control policy. The critic is used to evaluate the cost associated with the current policy, while the actor is used to find an improved policy based on information provided by the critic. Convergence to a close approximation of the HJB solution as well as stability of the proposed feedback control law are shown. Simulation results of the proposed method on a nonlinear CT system illustrate the effectiveness of the proposed approach. Copyright © 2013 ISA. All rights reserved.

  14. Modern on-line control system for refuse-fueled power plants. Moderne Leittechnik fuer Muellverbrennungsanlage

    Energy Technology Data Exchange (ETDEWEB)

    Grasmueck, L. (Asea Brown Boveri AG, Mannheim (Germany, F.R.)); Klitzke, H.J. (Goepfert und Reimer und Partner, Beratende Ingenieure, Hamburg (Germany, F.R.)); Schumacher, E. (Technische Werke Ludwigshafen am Rhein AG (Germany, F.R.))

    1989-10-01

    30 years after commissioning a refuse-fueled power plant in Ludwigshafen was retrofitted and extended. A process control system provides an optimal waste combustion and flue gas cleanup. An on-line central strategy, special requirements on waste combustion and solutions are presented in this report. (orig.).

  15. Facilitating Metacognitive Processes of Academic Genre-Based Writing Using an Online Writing System

    Science.gov (United States)

    Yeh, Hui-Chin

    2015-01-01

    Few studies have investigated how metacognitive processes foster the application of genre knowledge to students' academic writing. This is largely due to its internal and unobservable characteristics. To bridge this gap, an online writing system based on metacognition, involving the stages of planning, monitoring, evaluating, and revising, was…

  16. An Evaluation System for the Online Training Programs in Meteorology and Hydrology

    Science.gov (United States)

    Wang, Yong; Zhi, Xiefei

    2009-01-01

    This paper studies the current evaluation system for the online training program in meteorology and hydrology. CIPP model that includes context evaluation, input evaluation, process evaluation and product evaluation differs from Kirkpatrick model including reactions evaluation, learning evaluation, transfer evaluation and results evaluation in…

  17. Accessibility Evaluation of Online Learning Management System for Persons with Visual Impairment

    Science.gov (United States)

    Suwannawut, Nantanoot

    2014-01-01

    Many academic institutions around the world are utilizing and investing in online learning management systems (LMS). While several research studies have examined the functionality of this type of technology, little attention has been paid to accessibility issues, in particular to the complex web-based interfaces for learners with disabilities,…

  18. Online hemodiafiltration reduces systemic inflammation compared to low-flux hemodialysis

    NARCIS (Netherlands)

    Hoedt, C.H. den; Bots, M.L.; Grooteman, M.P.; Weerd, N.C. van der; Mazairac, A.H.; Penne, E.L.; Levesque, R.; Wee, P.M. ter; Nube, M.J.; Blankestijn, P.J.; Dorpel, M.A. van den; Hamersvelt, H.W. van

    2014-01-01

    Online hemodiafiltration may diminish inflammatory activity through amelioration of the uremic milieu. However, impurities in water quality might provoke inflammatory responses. We therefore compared the long-term effect of low-flux hemodialysis to hemodiafiltration on the systemic inflammatory acti

  19. Natural Interaction Based Online Military Boxing Learning System

    Science.gov (United States)

    Yang, Chenglei; Wang, Lu; Sun, Bing; Yin, Xu; Wang, Xiaoting; Liu, Li; Lu, Lin

    2013-01-01

    Military boxing, a kind of Chinese martial arts, is widespread and health beneficial. In this paper, the authors introduce a military boxing learning system realized by 3D motion capture, Web3D and 3D interactive technologies. The interactions with the system are natural and intuitive. Users can observe and learn the details of each action of the…

  20. Applying an Activity System to Online Collaborative Group Work Analysis

    Science.gov (United States)

    Choi, Hyungshin; Kang, Myunghee

    2010-01-01

    This study determines whether an activity system provides a systematic framework to analyse collaborative group work. Using an activity system as a unit of analysis, the research examined learner behaviours, conflicting factors and facilitating factors while students engaged in collaborative work via asynchronous computer-mediated communication.…

  1. An Online Inquiry Instructional System for Science Education.

    Science.gov (United States)

    Bodzin, Alec M.; Park, John C.

    The Carolina Coastal Science Web site is an instructional system defined as an arrangement of resources and procedures used to promote learning. This paper describes the blending of a systems approach to instructional design with additional constructivist elements in order to develop the Carolina Coastal Science Web site. The Web site is an online…

  2. A Multi-Agent System for Intelligent Online Education.

    Science.gov (United States)

    O'Riordan, Colm; Griffith, Josephine

    1999-01-01

    Describes the system architecture of an intelligent Web-based education system that includes user modeling agents, information filtering agents for automatic information gathering, and the multi-agent interaction. Discusses information management; user interaction; support for collaborative peer-peer learning; implementation; testing; and future…

  3. Natural Interaction Based Online Military Boxing Learning System

    Science.gov (United States)

    Yang, Chenglei; Wang, Lu; Sun, Bing; Yin, Xu; Wang, Xiaoting; Liu, Li; Lu, Lin

    2013-01-01

    Military boxing, a kind of Chinese martial arts, is widespread and health beneficial. In this paper, the authors introduce a military boxing learning system realized by 3D motion capture, Web3D and 3D interactive technologies. The interactions with the system are natural and intuitive. Users can observe and learn the details of each action of the…

  4. End-to-end encryption in on-line payment systems : The industry reluctance and the role of laws

    NARCIS (Netherlands)

    Kasiyanto, Safari

    2016-01-01

    Various security breaches at third-party payment processors show that online payment systems are the primary target for cyber-criminals. In general, the security of online payment systems relies on a number of factors, namely technical factors, processing factors, and legal factors. The industry giv

  5. End-to-end encryption in on-line payment systems : The industry reluctance and the role of laws

    NARCIS (Netherlands)

    Kasiyanto, Safari

    2016-01-01

    Various security breaches at third-party payment processors show that online payment systems are the primary target for cyber-criminals. In general, the security of online payment systems relies on a number of factors, namely technical factors, processing factors, and legal factors. The industry

  6. End-to-end encryption in on-line payment systems : The industry reluctance and the role of laws

    NARCIS (Netherlands)

    Kasiyanto, Safari

    2016-01-01

    Various security breaches at third-party payment processors show that online payment systems are the primary target for cyber-criminals. In general, the security of online payment systems relies on a number of factors, namely technical factors, processing factors, and legal factors. The industry giv

  7. Marketing information system online design for craftsmen small medium enterprises (case study: craftsmen ac)

    Science.gov (United States)

    Fitriana, Rina; Kurniawan, Wawan; Barlianto, Anung; Adriansyah Putra, Rizki

    2016-02-01

    AC is small and medium enterprises which is engaged in the field of crafts. This SME (Small Medium Enterprise) didn't have an integrated information system for managing sales. This research aims to design a marketing Information system online as applications that built as web base. The integrated system is made to manage sales and expand its market share. This study uses a structured analysis and design in its approach to build systems and also implemented a marketing framework of STP (Segmentation, Targeting, Positioning) and 4P (Price, Product, Place, Promotion) to obtain market analysis. The main market target customer craftsmen AC is women aged 13 years to 35 years. The products produced by AC are shoes, brooch, that are typical of the archipelago. The prices is range from Rp. 2000 until Rp. 400.000. Marketing information system online can be used as a sales transaction document, promoting the goods, and for customer booking products.

  8. Online optimization of a multi-conversion-level DC home microgrid for system efficiency enhancement

    DEFF Research Database (Denmark)

    Boscaino, V.; Guerrero, J. M.; Ciornei, I.

    2017-01-01

    stages, three paralleled DC/DC converters are implemented. A Genetic Algorithm performs the on-line optimization of the DC network’s global efficiency, generating the optimal current sharing ratios of the concurrent power converters. The overall DC/DC conversion system including the optimization section...... for, such as: components loss parameters, components ageing, load currents, switching frequency and input voltage. Simulation results considering several case studies are presented and the benefits brought by the optimization algorithm in terms of power saving are widely discussed for each case study.......In this paper, an on-line management system for the optimal efficiency operation of a multi-bus DC home distribution system is proposed. The operation of the system is discussed with reference to a distribution system with two conversion stages and three voltage levels. In each of the conversion...

  9. On-Line Partial Discharge Monitoring and Diagnostic System for Power Transformer

    Institute of Scientific and Technical Information of China (English)

    LIN Du; JIANG Lei; LI Fuqi; ZHU Deheng; TAN Kexiong; WU Chengqi; JIN Xianhe; WANG Changchang; CHENG T. C.

    2005-01-01

    This paper introduces a computerized on-line partial discharge (PD) monitoring and diagnostic system for transformers. The system, which is already in use in a power station, uses wide-band active transducers and a data acquisition unit with modularized and exchangeable components. The system software is a power equipment monitoring and diagnostic system, which is based on the component object model, and was developed for monitoring multiple parameters in multiple power supply systems. The statistical characteristics of PDs in power transformers were studied using 7 experimental models for simulating PDs in transformers and 3 models for simulating interfering discharges in air. The discharge features were analyzed using a 3-D pattern chart with a three-layer back-propagation artificial neural network used to recognize the patterns. The results show that PDs in air and oil can be distinguished. The model can be used for interference rejection on-line monitoring of partial discharge in transformers.

  10. BWR online monitoring system based on noise analysis

    Energy Technology Data Exchange (ETDEWEB)

    Ortiz-Villafuerte, Javier [Departamento de Sistemas Nucleares, Instituto Nacional de Investigaciones Nucleares, Carr. Mexico-Toluca S/N, Ocoyoacac, Edo. de Mexico, 52750 (Mexico)]. E-mail: jov@nuclear.inin.mx; Castillo-Duran, Rogelio [Departamento de Sistemas Nucleares, Instituto Nacional de Investigaciones Nucleares, Carr. Mexico-Toluca S/N, Ocoyoacac, Edo. de Mexico, 52750 (Mexico)]. E-mail: rcd@nuclear.inin.mx; Alonso, Gustavo [Departamento de Sistemas Nucleares, Instituto Nacional de Investigaciones Nucleares, Carr. Mexico-Toluca S/N, Ocoyoacac, Edo. de Mexico, 52750 (Mexico)]. E-mail: galonso@nuclear.inin.mx; Calleros-Micheland, Gabriel [Central Nuclear de Laguna Verde, Comision Federal de Electricidad, Carr. Cardel-Nautla, km. 42.5, Alto Lucero, Veracruz (Mexico)]. E-mail: gcm9acpp@cfe.gob.mx

    2006-11-15

    A monitoring system for during operation early detection of an anomaly and/or faulty behavior of equipment and systems related to the dynamics of a boiling water reactor (BWR) has been developed. The monitoring system is based on the analysis of the 'noise' or fluctuations of a signal from a sensor or measurement device. An efficient prime factor algorithm to compute the fast Fourier transform allows the continuous, real-time comparison of the normalized power spectrum density function of the signal against previously stored reference patterns in a continuously evolving matrix. The monitoring system has been successfully tested offline. Four examples of the application of the monitoring system to the detection and diagnostic of faulty equipment behavior are presented in this work: the detection of two different events of partial blockage at the jet pump inlet nozzle, miss-calibration of a recirculation mass flow sensor, and detection of a faulty data acquisition card. The events occurred at the two BWR Units of the Laguna Verde Nuclear Power Plant. The monitoring system and its possible coupling to the data and processing information system of the Laguna Verde Nuclear Power Plant are described. The signal processing methodology is presented along with the introduction of the application of the evolutionary matrix concept for determining the base signature of reactor equipment or component and the detection of off normal operation conditions.

  11. Computer conferencing systems from the perspective of an online course designer; I sistemi per computer conferencing visti da un progettista di corsi online

    Energy Technology Data Exchange (ETDEWEB)

    Trentin, G. [Consiglio Nazionale delle Ricerche, Genoa (Italy). Ist. Tecnologie Didattiche

    1999-04-01

    The aim of this paper is to discuss the main characteristics that the computer conferencing system should have in order to used the third generation distance education ( online education) process. This particular issue will be analysed in particular the point of view of an online course developer. To these ends the paper is divided into three sections. First, the need for a suitable communication structure for managing online courses will be pointed out. Afterward, several features of a related computer conferencing system will be discussed. Finally, on the basis of the above considerations, some suggestions will be made on how to choose a computer conferencing system for online education. The paper takes in account the personal experience for the author, involved as a course developer in some projects centered on the use of telematics in in-service training. [Italian] Scopo di questo articolo e' discutere le caratteristiche peculiari di un sistema di computer conferencing da utilizzarsi in interventi di formazione a distanza di terza generazione (on-line education o formazione in rete). L'argomento verra' trattato pertanto dal punto di vista del progettista di corsi online. Dapprima verra' evidenziata l'esigena di un'adeguata strutturazione della comunicazione a supporto di processi di formazione in rete. Si passera' quindi ad analizzare le principali caratteristiche dei sistemi per computer conferencing. Infine, sulla base delle precedenti considerazioni, verranno suggeriti alcuni criteri per la scelta di tali sistemi. L'articolo trae spunto dall'esperienza diretta dell'autore nella sua veste di progettista/sperimentatore di corsi online. Gli argomenti verranno quindi affrontati dal punto di vista di chi operativamente ha il compito sia di organizzare e gestire la comunicazione a distanza fra i partecipanti a un intervento in rete sia di scegliere il sistema telematico piu' idoneo per la sua gestione.

  12. Reliability of an Online Geriatric Assessment Procedure Using the interRAI Acute Care Assessment System.

    Science.gov (United States)

    Martin-Khan, Melinda G; Edwards, Helen; Wootton, Richard; Counsell, Steven R; Varghese, Paul; Lim, Wen Kwang; Darzins, Peteris; Dakin, Lucy; Klein, Kerenaftali; Gray, Leonard C

    2017-08-21

    To determine whether geriatric triage decisions made using a comprehensive geriatric assessment (CGA) performed online are less reliable than face-to-face (FTF) decisions. Multisite noninferiority prospective cohort study. Two specialist geriatricians assessed individuals sequentially referred for an acute care geriatric consultation. Participants were allocated to one FTF assessment and an additional assessment (FTF or online (OL)), creating two groups-two FTF (FTF-FTF, n = 81) or online and FTF (OL-FTF, n = 85). Three acute care public hospitals in two Australian states. Admitted individuals referred for CGA. Nurse-administered CGA, based on the interRAI Acute Care assessment system accessed online and other online clinical data such as pathology results and imaging enabling geriatricians to review participants' information and provide input into their care from a distance. The primary decision subjected to this analysis was referral for permanent residential care. Geriatricians also recorded recommendations for referrals and variations for medication management and judgment regarding prognosis at discharge and after 3 months. Overall percentage agreement was 88% (n = 71) for the FTF-FTF group and 91% (n = 77) for the OL-FTF group. The difference in agreement between the FTF-FTF and OL-FTF groups was -3%, indicating that there was no difference between the methods of assessment. Judgements made regarding diagnoses of geriatric syndromes, medication management, and prognosis (with regard to hospital outcome and location at 3 months) were found to be equally reliable in each mode of consultation. Geriatric assessment performed online using a nurse-administered structured CGA system was no less reliable than conventional assessment in making clinical triage decisions. © 2017, Copyright the Authors Journal compilation © 2017, The American Geriatrics Society.

  13. Tourist Affiliate Program while Using Online Booking System with Possibility of Entering B2B Code

    Directory of Open Access Journals (Sweden)

    Slivar Iva

    2008-01-01

    Full Text Available Affiliate marketing programs are one of the most powerful tools for online marketing since the merchant presenting a product or a service decides on the commissioning model and the commission is granted only if the desired results have been reached. Affiliate marketing is based offline as much as tourism itself and it relies on the commission that tourist companies pay to their partners (affiliates who bring new guests. This paper will present the basics of how online affiliate programs work, benefits they bring and steps for their further implementation. It will explain in detail how to establish an affiliate program for dynamic web pages which use online booking system platforms that offer a possibility of entering a B2B code. Special attention will be paid to SEO (Search Engine Optimisation. It will also present results of a research on Croatian hotels web pages and the implementation of the online booking system and affiliate programs. Having in mind the insufficient deployment of online potentials, the aim of the paper is to stress the need for setting up an effective method of monitoring changes and updates in the online world as well as implementing new promotional possibilities, all aimed at increasing sales. The goal of the paper is to explore advantages and disadvantages of the affiliate program as a new sales channel and promote the possibility to implement it in one of the biggest Croatian hotel companies, Maistra d.d. Rovinj. Along with methods of data acquiring and different techniques of creative thinking, the following scientific research methods were also used: statistic, historic, descriptive, comparison, interview, analysis and synthesis, induction and deduction.

  14. An on-line remote supervisory system for microparticles based on image analysis

    Science.gov (United States)

    Liu, Wei-Hua; Jiang, Ming-Shun; Sui, Qing-Mei

    2011-11-01

    A new on-line remote particle analysis system based on image processing has been developed to measure microparticles. The system is composed of particle collector sensor (PCS), particle image sensor (PIS), image remote transmit module and image processing system. Then some details of image processing are discussed. The main advantage of this system is more convenient in particle sample collection and particle image acquisition. The particle size can be obtained using the system with a deviation abot less than 1 μm, and the particle number can be obtained without deviation. The developed system is also convenient and versatile for other analyses of microparticle for academic and industrial application.

  15. An Advisory System for On-line Control of Fed-batch Cultivation of Saccharomyces cerevisiae

    Directory of Open Access Journals (Sweden)

    Ljakova K.

    2008-12-01

    Full Text Available Free software for entering and documenting data EpiData is here used for design of an advisory system for on-line control of a fermentation process. Based on the preliminary developed system for functional state recognition, presented here system will advise the user which new functional state can be reached and what kind of control actions have to be taken. New-designed system appears as an expert system and comprises knowledge of well-trained operators of cultivation processes. Developed advisory system is further applied for a fed-batch cultivation of Saccharomyces cerevisiae.

  16. MOIDSS?- Mobile Online Intelligent Decision Support System Project

    Data.gov (United States)

    National Aeronautics and Space Administration — A mapping solution will be developed that allows for geospatial-reality intelligent linking database with remotely sensed images. This system is designed to use...

  17. An Ontology Based Approach to Implement the Online Recommendation System

    Directory of Open Access Journals (Sweden)

    Vijayakumar Mohanraj

    2011-01-01

    Full Text Available Problem statement: Every web user has different intent when accessing the information on website. The primary goal of recommendation system is to anticipate the user intent and recommend the web pages that contain user expected information. Effective recommendation of web pages involves two important challenges: accurately identifying the user intent and predict the result show that novel web usage mining method and ontological concept scoring algorithm based on website domain ontological profile helps the recommendation system imminent navigation pattern in such a way that it provides required content while users browse the predicted navigation. Approach: We present a ontology based approach to implement recommendation system that involves applying innovative web usage mining on log system to discover all possible imminent navigation patterns of current user and resolve any uncertainties in discovering the navigation pattern by applying ontological concept based similarity comparison and scoring algorithm. Results: result show that novel web usage mining method and ontological concept scoring algorithm based on website domain ontological profile helps the recommendation system to predict and present most relevant navigation pattern to users. Conclusion: our recommendation system confirms that ontology based approach should be used to ensure excellent accuracy in predicting and capturing future navigation pattern of web user.

  18. A new on-line leakage current monitoring system of ZnO surge arresters

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Bok-Hee [Research Center for Next-Generation High Voltage and Power Technology, Inha University, 253 Yonghyun-dong, Nam-ku, Incheon 402-751 (Korea, Republic of)]. E-mail: bhlee@inha.ac.kr; Kang, Sung-Man [Research Center for Next-Generation High Voltage and Power Technology, Inha University, 253 Yonghyun-dong, Nam-ku, Incheon 402-751 (Korea, Republic of)

    2005-05-15

    This paper presents a new on-line leakage current monitoring system of zinc oxide (ZnO) surge arresters. To effectively diagnose the deterioration of ZnO surge arresters, a new algorithm and on-line leakage current detection device, which uses the time-delay addition method, for discriminating the resistive and capacitive currents was developed to use in the aging test and durability evaluation for ZnO arrester blocks. A computer-based measurement system of the resistive leakage current, the on-line monitoring device can detect accurately the leakage currents flowing through ZnO surge arresters for power frequency ac applied voltages. The proposed on-line leakage current monitoring device of ZnO surge arresters is more highly sensitive and gives more linear response than the existing devices using the detection method of the third harmonic leakage currents. Therefore, the proposed leakage current monitoring device can be useful for predicting the defects and performance deterioration of ZnO surge arresters in power system applications.

  19. Online Education Systems in Scandinavian and Australian Universities: A Comparative Study

    Directory of Open Access Journals (Sweden)

    Morten Flate Paulsen

    2002-10-01

    Full Text Available This article presents a comparative study of online education systems in Norwegian, Swedish, and Australian universities. The online education systems discussed comprise content creation tools and systems for learning management, student management, and accounting. The author of this article arrives at the conclusion that there seems to be a general lack of integration between theses systems in all three countries. Further, there seems to be little focus on standards specifications such as IMS Global Learning Consortium (IMS and Sharable Content Object Reference Model (SCORM in higher education in all three countries. It was found that both Norway and Sweden value the importance of nationally developed learning management systems and student management systems; however, this does not seem to be the case in Australia. There also seems to be much more national coordination and governmental coercion concerning the choice of student management systems used in Sweden and Norway, than is the case in Australia. Finally, with regard to online education, the most striking difference between these three countries is that of economic policy. In Australia, education is considered an important export industry. In Norway and Sweden, however, the export of education does not seem to be an issue for public discussion.

  20. Control and monitoring of on-line trigger algorithms using a SCADA system

    CERN Document Server

    van Herwijnen, E; Barczyk, A; Damodaran, B; Frank, M; Gaidioz, B; Gaspar, C; Jacobsson, R; Jost, B; Neufeld, N; Bonifazi, F; Callot, O; Lopes, H

    2006-01-01

    LHCb [1] has an integrated Experiment Control System (ECS) [2], based on the commercial SCADA system PVSS [3]. The novelty of this approach is that, in addition to the usual control and monitoring of experimental equipment, it provides control and monitoring for software processes, namely the on-line trigger algorithms. Algorithms based on Gaudi [4] (the LHCb software framework) compute the trigger decisions on an event filter farm of around 2000 PCs. Gaucho [5], the GAUdi Component Helping Online, was developed to allow the control and monitoring of Gaudi algorithms. Using Gaucho, algorithms can be monitored from the run control system provided by the ECS. To achieve this, Gaucho implements a hierarchical control system using Finite State Machines. In this article we describe the Gaucho architecture, the experience of monitoring a large number of software processes and some requirements for future extensions.

  1. Empirical analysis of individual popularity and activity on an online music service system

    Science.gov (United States)

    Hu, Hai-Bo; Han, Ding-Yi

    2008-10-01

    Quantitative understanding of human behaviors supplies basic comprehension of the dynamics of many socio-economic systems. Based on the log data of an online music service system, we investigate the statistical characteristics of individual activity and popularity, and find that the distributions of both of them follow a stretched exponential form which interpolates between exponential and power law distribution. We also study the human dynamics on the online system and find that the distribution of interevent time between two consecutive listenings of music shows the fat tail feature. Besides, with the reduction of user activity the fat tail becomes more and more irregular, indicating different behavior patterns for users with diverse activities. The research results may shed some light on the in-depth understanding of collective behaviors in socio-economic systems.

  2. On-Line Serials System at Laval University Library

    Directory of Open Access Journals (Sweden)

    Rosario de Varennes

    1970-06-01

    Full Text Available Description of a system, operational since June 1968, that provides control of all serials holdings in nine campus libraries, permits updating of the complete file every two or three days, and produces various outputs for library users and library staff from data in variable fields on disks (listings, statistics, etc.. The program, presently operating on an IBM 360/50 and utilizing an IBM 2314 disk-storage facility and three IBM 226 CRT terminals, is written in IBM System/360 Operating System Assembler Language and in PL/I; it could encompass a file of no more than 10 million records of variable length limited to 127/255 characters and subdivided in 25 or fewer fields.

  3. Design of Nuclear Power Plant Online Monitoring System

    Energy Technology Data Exchange (ETDEWEB)

    An, Sang-ha; Jeong, Yong-hoon; Chang, Soon-heung [KAIST, Daejeon (Korea, Republic of); Lee, Song-kyu [Korea Power Engineering Co., Yongin (Korea, Republic of)

    2007-07-01

    Statistical Quality Control techniques have been applied to many aspects of industrial engineering. An application to nuclear power plant maintenance and control is also presented that can greatly improve plant safety. As a demonstration of such an approach, a specific system is analyzed: the reactor coolant pumps (RCPs) and the fouling resistance of heat exchanger. This research uses Shewart X-bar, R charts, Cumulative Sum charts (CUSUM), and Sequential Probability Ratio Test (SPRT) to analyze the process for the state of statistical control. And the Control Chart Analyzer (CCA) has been made to support these analyses that can make a decision of error in process. The analysis shows that statistical process control methods can be applied as an early warning system capable of identifying significant equipment problems well in advance of traditional control room alarm indicators. Such a system would provide operators with enough time to respond to possible emergency situations and thus improve plant safety and reliability.

  4. Integrated On-line Instrumentation System of Magnetic Properties Measurement

    Institute of Scientific and Technical Information of China (English)

    2000-01-01

    A portable microcomputer-controlled inspection system has been developed for detection of mag netic properties of soft magnetic materials. It incorporates custom designed software for control of the magnetic field during operation such as demagnetization, field sweeping, and for data logging and analysis. Results are recorded using a 12-bit analog to digital converter and are then stored on disk. The magnetic hysteresis loop and Barkhausen noise data can be converted into important magnetic parameters:, coecivity, remanence, and hysteresis loss, Barkhausen ampli tude, and Barkhausen noise energy. This system incorporated with the magnetostriction, and magnetoacoustic emission, is then related with the nondestructive detection of material degra dation.

  5. THEORETICAL MODEL AND NUMERICAL METHOD ON ONLINE IDENTIFICATION OF DYNAMICAL CHARACTERISTICS OF STRUCTURAL SYSTEM

    Institute of Scientific and Technical Information of China (English)

    姚志远; 汪凤泉

    2004-01-01

    An online method of identification of dynamic characteristics only using measured ambient response of structural dynamic system is widely focused on. The Ibrahim and ARMA (AutoRegressive Moving Average ) methods are basic identification methods. A model on dynamic system suffered by random ambient excitation was researched into, and a subspace decomposition method being different from traditional harmonic retrieval method was introduced. Robustness and effectiveness of this approach on identification of vibration characteristics are demonstrated on numerical experiment.

  6. FDD-1 System On-line Monitoring Fuel Rod Failure of Nuclear Power Plant

    Institute of Scientific and Technical Information of China (English)

    CHENPeng; ZHANGYing-chao; JISong-tao; GAOYong-guang; YINZhen-guo; HANChuan-bin

    2003-01-01

    The FDD-1 system developed by CIAE for on-line monitoring fuel rod failure of nuclear power plant consists of γ-ray detector, γ-ray spectrum analyzer, computer, and an analysis code for evaluating the status of fuel rod failure. It would be determined that the fuel rod failure occurs when a large amount of γ activity increases in the primary system measured by γ-ray detector near the CVCS.

  7. The Design of Partial Discharge On-Line Monitoring System for XLPE Power Cable

    OpenAIRE

    Chen Rui-Long; Qian Yong; Ye Hai-Feng; Sheng Ge-Hao; Jiang Xiu-Chen

    2013-01-01

    Partial discharge detection is an important means to assess the situation of XLPE power cable’s insulation. This study has developed an on-line monitoring system which applies to the medium voltage XLPE cable on partial discharge, described its working principle, components of hardware, software designing and program implementation in details. Through monitoring the partial discharge signal in grounding lines of the XLPE cable’s shield, the system integrated assess the situation of XLPE cable...

  8. Data Visualization and Analysis for Climate Studies using NASA Giovanni Online System

    Science.gov (United States)

    Rui, Hualan; Leptoukh, Gregory; Lloyd, Steven

    2008-01-01

    With many global earth observation systems and missions focused on climate systems and the associated large volumes of observational data available for exploring and explaining how climate is changing and why, there is an urgent need for climate services. Giovanni, the NASA GES DISC Interactive Online Visualization ANd ANalysis Infrastructure, is a simple to use yet powerful tool for analysing these data for research on global warming and climate change, as well as for applications to weather. air quality, agriculture, and water resources,

  9. Investigating Readers' Mental Maps of References in an Online System

    Science.gov (United States)

    Yang, Yu-Fen; Wong, Wing-Kwong; Yeh, Hui-Chin

    2009-01-01

    Referential identification and resolution are considered the keys to help readers grasp the main idea of a text and solve lexical ambiguities. The goal of this study is to design a computer system for helping college students who learn English as a Foreign Language (EFL) develop mental maps of referential identification and resolution in reading.…

  10. On-line corrosion monitoring in geothermal district heating systems

    DEFF Research Database (Denmark)

    Richter, S.; Hilbert, Lisbeth Rischel; Thorarinsdottir, R.I.

    2006-01-01

    General corrosion rates in the geothermal district heating systems in Iceland are generally low, of the magnitude 1 lm/y. The reason is high pH (9.5), low-conductivity (200 lm/y) and negligible dissolved oxygen. The geothermal hot water is either used directly from source or to heat up cold ground...

  11. Online Parameter Estimation for a Centrifugal Decanter System

    DEFF Research Database (Denmark)

    Larsen, Jesper Abildgaard; Alstrøm, Preben

    2014-01-01

    In many processing plants decanter systems are used for separation of heterogenious mixtures, and even though they account for a large fraction of the energy consumption, most decanters just runs at a fixed setpoint. Here, multi model estimation is applied to a waste water treatment plant...

  12. On-line Corrosion Monitoring in District Heating Systems

    DEFF Research Database (Denmark)

    Richter, Sonja; Thorarinsdottir, R.I.; Hilbert, Lisbeth Rischel

    2005-01-01

    The corrosion control in district heating systems is today performed primarily with control of the water quality. The corrosion rate is kept low by assuring low dissolved oxygen concentration, high pH and low conductivity. Corrosion failures can occur, e.g. as a result of unknown oxygen ingress...

  13. Online, real-time corrosion monitoring in district heating systems

    DEFF Research Database (Denmark)

    Hilbert, Lisbeth Rischel; Thorarinsdottir, R.I.

    2005-01-01

    The corrosion control in district heating systems is today performed primarily with control of the water quality. The corrosion rate is kept low by assuring low dissolved oxygen concentration, high pH and low conductivity. Corrosion failures can occur, e.g. as a result of unknown oxygen ingress...

  14. Choosing on Online Integrated Library System: A Consortium Approach.

    Science.gov (United States)

    Hryciw-Wing, Carol A.

    1992-01-01

    A consortia of Rhode Island academic libraries used several research methods--checklists, vendor matrix, vendor demonstrations, dial-up access, on-site visits, and telephone conversations with representatives--to evaluate integrated library systems for purchase. With the help of private funding, INNOPAC was purchased and implemented. (EA)

  15. Doctors Online: Learning Using an Internet Based Content Management System

    Science.gov (United States)

    Pullen, Darren

    2013-01-01

    The past century has seen spectacular gains in the breadth and depth of medical knowledge, but the potential of these gains has been hampered by a slow system of disseminating knowledge. Over the course of medical education numerous technologies and methods have been used to deliver continuing medical education (CME) to health care professionals…

  16. Electronic Nicotine Delivery Systems (ENDS): Mapping the Indian Online Retail Market.

    Science.gov (United States)

    Mohanty, Vikrant R; Chahar, Puneet; Balappanavar, Aswini Y; Yadav, Vipul

    2017-11-01

    Motivating tobacco consumers to change their behavior, and harm reduction strategies, are the predominant traditional approaches to tobacco cessation. Recent trends worldwide have shown the emergence of Electronic Nicotine Delivery Systems (ENDS), such as electronic cigarettes (e-cigarettes), as a purported harm reduction strategy to traditional cigarettes. Considering the global rise in the popularity of ENDS, our study aims to survey the online retail market for ENDS in India. The current study was conducted in September-October, 2015 and 4 keywords were used to search Google India to identify online retail websites marketing ENDS. Each website was searched using the same keywords and all specific website pages displaying ENDS models were considered. Thus, data was obtained for various measures of ENDS present on the model descriptions. A total of 6 retail shopping websites were searched which revealed 65 different models of ENDS (34 brands). Forty-five models (69%) were flavored and 21 models (33%) mentioned about nicotine strengths. Seventeen models (26%) provided health warnings in their product descriptions. "No tar no tobacco" was most common claim accounting to 34 models (51%). This article provide insight into the current status of evident online sales of ENDS in India. There is urgent need to implement regulations on online sales of these products and protect the future from such approaches of tobacco control which still have divided opinions. The study permits the use of web search engine to explore market availability of ENDS at various online retail websites. Recommendations from the study can be used to guide policy makers in developing strategies tailored to regulate availability and online sales of ENDS in India.

  17. A system dynamic model for analyzing online question & answer markets

    Directory of Open Access Journals (Sweden)

    Elnaz Amani

    2014-03-01

    Full Text Available During the past two decades, there have been growing interests on developing websites to build a link between various groups of people to share their knowledge such as Google service. This kind of activity helps fast and reliable distribution of knowledge since someone disseminates a question and various people attempt to provide some responses. This paper presents a system dynamic method for investigating the relationships between various components of a benchmark site. The proposed study develops closed loop dynamic among various components of the survey and provides some necessary actions for development of such systems. The results of our survey have indicated that the new forum could end up having significant number of unanswered questions. Therefore, researchers who work for this forum are suggested to increase their skills and their response rates to reduce the rate of unanswered questions.

  18. Design of Reactor Coolant Pump Seal Online Monitoring System

    Energy Technology Data Exchange (ETDEWEB)

    Ah, Sang Ha; Chang, Soon Heung [KAIST, Daejeon (Korea, Republic of); Lee, Song Kyu [Korea Power Engineering Co., Yongin (Korea, Republic of)

    2008-05-15

    As a part of a Department of Korea Power Engineering Co., (KOPEC) Project, Statistical Quality Control techniques have been applied to many aspects of industrial engineering. An application to nuclear power plant maintenance and control is also presented that can greatly improve plant safety. As a demonstration of such an approach, a specific system is analyzed: the reactor coolant pumps (RCPs) and the fouling resistance of heat exchanger. This research uses Shewart X-bar, R charts, Cumulative Sum charts (CUSUM), and Sequential Probability Ratio Test (SPRT) to analyze the process for the state of statistical control. And the Control Chart Analyzer (CCA) has been made to support these analyses that can make a decision of error in process. The analysis shows that statistical process control methods can be applied as an early warning system capable of identifying significant equipment problems well in advance of traditional control room alarm indicators. Such a system would provide operators with enough time to respond to possible emergency situations and thus improve plant safety and reliability. RCP circulates reactor coolant to transfer heat from the reactor to the steam generators. RCP seals are in the pressure part of reactor coolant system, so if it breaks, it can cause small break LOCA. And they are running on high pressure, and high temperature, so they can be easily broken. Since the reactor coolant pumps operate within the containment building, physical access to the pumps occurs only during refueling outages. Engineers depend on process variables transmitted to the control room and through the station's data historian to assess the pumps' condition during normal operation.

  19. PENGEMBANGAN CONTENT MANAGEMENT SYSTEM PADA ADMISI ONLINE BINUS UNIVERSITY

    OpenAIRE

    Karto Iskandar; Jefriyanto; Halena Giovanni; Candra Gunawan

    2012-01-01

    Technically registration form for new Binus institution must be regenerated and not dynamic. Therefore, this research is objected to simplify the creation of registration process for new Binus institution and provide solutions to the problem when Binus establish other new institutions. Methodology used is analysis and design of the database (database oriented). Analysis is done by asking the problems of existing systems in the IT Directorate, whereas the design uses UML diagram notation 2.0. ...

  20. Relationship between systemic diseases and endodontics: an online study guide.

    Science.gov (United States)

    2008-05-01

    The Editorial Board of the Journal of Endodontics has developed a literature-based study guide of topical areas related to endodontics. This study guide is intended to give the reader a focused review of the essential endodontic literature and does not cite all possible articles related to each topic. Although citing all articles would be comprehensive, it would defeat the idea of a study guide. This section will cover the relationship between systemic diseases and endodontics.

  1. A robust method for online stereo camera self-calibration in unmanned vehicle system

    Science.gov (United States)

    Zhao, Yu; Chihara, Nobuhiro; Guo, Tao; Kimura, Nobutaka

    2014-06-01

    Self-calibration is a fundamental technology used to estimate the relative posture of the cameras for environment recognition in unmanned system. We focused on the issue of recognition accuracy decrease caused by the vibration of platform and conducted this research to achieve on-line self-calibration using feature point's registration and robust estimation of fundamental matrix. Three key factors in this respect are needed to be improved. Firstly, the feature mismatching exists resulting in the decrease of estimation accuracy of relative posture. The second, the conventional estimation method cannot satisfy both the estimation speed and calibration accuracy at the same tame. The third, some system intrinsic noises also lead greatly to the deviation of estimation results. In order to improve the calibration accuracy, estimation speed and system robustness for the practical implementation, we discuss and analyze the algorithms to make improvements on the stereo camera system to achieve on-line self-calibration. Based on the epipolar geometry and 3D images parallax, two geometry constraints are proposed to make the corresponding feature points search performed in a small search-range resulting in the improvement of matching accuracy and searching speed. Then, two conventional estimation algorithms are analyzed and evaluated for estimation accuracy and robustness. The third, Rigorous posture calculation method is proposed with consideration of the relative posture deviation of each separated parts in the stereo camera system. Validation experiments were performed with the stereo camera mounted on the Pen-Tilt Unit for accurate rotation control and the evaluation shows that our proposed method is fast and of high accuracy with high robustness for on-line self-calibration algorithm. Thus, as the main contribution, we proposed methods to solve the on-line self-calibration fast and accurately, envision the possibility for practical implementation on unmanned system as

  2. A vision system for the online quality monitoring of industrial manufacturing

    Science.gov (United States)

    Di Leo, Giuseppe; Liguori, Consolatina; Pietrosanto, Antonio; Sommella, Paolo

    2017-02-01

    The design of an image based measurement system for the online inspection of electromechanical parts is described. A two-camera architecture is introduced in order to highlight all the required details involved in the measurements. The design takes into account both the interfacing and the real-time issues that assure an effective online operation. The description of the measurement system and the corresponding installation on the production line points out a methodological approach to the design of these kinds of measurement systems. The paper provides details about the algorithms for the localization and the measurement of the required quantities, as well as the calibration procedure and the error correction. Experimental tests for the performance evaluation are presented and discussed in terms of timing and accuracy.

  3. Configuration Reusing in On-Line Task Scheduling for Reconfigurable Computing Systems

    Institute of Scientific and Technical Information of China (English)

    Maisam Mansub Bassiri; Hadi Shahriar Shahhoseini

    2011-01-01

    Reconfigurable computing systems can be reconfigured at runtime and support partial reconfigurability which makes us able to execute tasks in a true multitasking manner. To manage such systems at runtime, a reconfigurable operating system is needed. The main part of this operating system is resource management unit which performs on-line scheduling and placement of hardware tasks at runtime. Reconfiguration overhead is an important obstacle that limits the performance of on-line scheduling algorithms in reconfigurable computing systems and increases the overall execution time. Configuration reusing (task reusing) can decrease reconfiguration overhead considerably, particularly in periodic applications or the applications in which the probability of tasks recurrence is high. In this paper, we present a technique called reusing-based scheduling (RBS), for on-line scheduling and placement in which configuration reusing is considered as a main characteristic in order to reduce reconfiguration overhead and decrease total execution time of the tasks. Several experiments have been conducted on the proposed algorithm. Obtained results show considerable improvement in overall execution time of the tasks.

  4. An online emission spectral tomography system with digital signal processor.

    Science.gov (United States)

    Wan, Xiong; Xiong, Wenlin; Zhang, Zhimin; Chang, Fangfei

    2009-03-30

    Emission spectral tomography (EST) has been adopted to test the three-dimensional distribution parameters of fluid fields, such as burning gas, flame and plasma etc. In most cases, emission spectral data received by the video cameras are enormous so that the emission spectral tomography calculation is often time-consuming. Hence, accelerating calculation becomes the chief factor that one must consider for the practical application of EST. To solve the problem, a hardware implementation method was proposed in this paper, which adopted a digital signal processor (DSP) DM642 in an emission spectral tomography test system. The EST algorithm was fulfilled in the DSP, then calculation results were transmitted to the main computer via the user datagram protocol. Compared with purely VC++ software implementations, this new approach can decrease the calculation time significantly.

  5. A new inductive sensor for online health monitoring of mechanical transmission systems

    DEFF Research Database (Denmark)

    Wang, Chao; Liu, Xiao; Chen, Zhe

    2015-01-01

    and benefit the condition based maintenance. Generally speaking, the quantity of the metal debris in oil indicates the ageing rate of the system, while the size shows the severity of the faulty status. Particle diameter under 20μm implies normal wear condition of the system, diameter from 50 μm to 100 μm...... indicates the infancy failure of the system [1-2]. Inductive sensor, which transforms the quantity and size of the particles into the number and magnitude variation of pulses of coil inductance, is widely used in the online metal debris monitoring systems [1-5]....

  6. Web-Based Instruction Systems: Correlation of First Year Online Student Acceptance and Use Variables Related to Intent to Use

    Science.gov (United States)

    Butler, William T.

    2014-01-01

    The online education population is growing among all age groups but the connection that allows students to interface to the online classroom has been ignored as an issue for research. Web-based instructional systems are the key technology that enables students to enter the virtual classroom of the internet. The study of student perceptions of the…

  7. Asynchronous and synchronous distance learning in stem education, using the example of the online master program wind energy systems

    Science.gov (United States)

    Gleim, Daniela; Kuhl, Detlef

    2017-07-01

    This paper describes the 100% online teaching concepts of the degree program Online M.Sc. Wind Energy Systems. These are the synchronous teaching concept, the asynchronous learning concept and a combination of synchronous and asynchronous learning concept. The challenges that students and teachers have to face in the implementation of these teaching concepts are described here.

  8. Measurement and Improvement of Subject Specialists Performance Searching Chemical Abstracts Online as Available on SDC Search Systems.

    Science.gov (United States)

    Copeland, Richard F.; And Others

    The first phase of a project to design a prompting system to help semi-experienced end users to search Chemical Abstracts online, this study focused on the differences and similarities in the search approaches used by experienced users and those with less expertise. Four online searches on topics solicited from chemistry professors in small…

  9. LHCb Silicon Tracker DAQ and DCS Online Systems

    CERN Document Server

    Esperante-Pereira, D; Büchler, A; Keune, A; Bay, A; Blanc, F; Bettler, M O; Conti, G; Fave, V; Frei, R; Perrin, A; Potterat, C; Schneider, O; Tran, M; Bauer, C; Britsch, M; Hofmann, W; Maciuc, F; Schmelling, M; Voss, H; Straumann, U; Anderson, J; Chiapolini, N; Hangartner, V; Salzmann, S; Steiner, A; Steinkamp, O; Van Tilburg, J; Tobin, M; Vollhardt, A; Adeva, B; Fungueirino Pazos, A; Gallas, A; Pazos-Alvarez, A; Pérez-Trigo, E; Pló Casasús, M; Saborido, J; Vázquez, P; Gong, A; Iavenko, V; Okhrimenko, O; Pugatch, V

    2009-01-01

    The LHCb experiment at the Large Hadron Collider (LHC) at CERN in Geneva Switzerland is specialized on precision measurements of b quark decays. The Silicon Tracker (ST) contributes a crucial part in tracking the particle trajectories and consists of two silicon micro-strip detectors, the Tracker Turicensis upstream of the LHCb magnet and the Inner Tracker downstream. The radiation and the magnetic field represent new challenges for the implementation of a Detector Control System (DCS) and the data acquisition (DAQ). The DAQ has to deal with more than 270K analog readout channels, 2K readout chips and real time DAQ at a rate of 1.1 MHz with data processing at TELL1 level. The TELL1 real time algorithms for clustering thresholds and other computations run on dedicated FPGAs that implement 13K configurable parameters per board, in total 1.17 K parameters for the ST. After data processing the total throughput amounts to about 6.4 Gbytes from an input data rate of around ~337 Gbytes per second. A finite state mac...

  10. Online Calibration for LTE-Based Antenna Array System

    Directory of Open Access Journals (Sweden)

    Kyunghoon Kim

    2016-01-01

    Full Text Available This paper presents a novel calibration method that equalizes the impulse responses of all the Radio Frequency (RF modules of an antenna array system operating in Long-Term Evolution (LTE evolved NodeB (eNB. The proposed technique utilizes the Zadoff-Chu (Z-C sequence of the Primary Synchronization Signal (PSS and Sounding Reference Signal (SRS that are available in every LTE data frame for downlink and uplink, respectively, for estimating and compensating the differences in the impulse responses among the RF modules. The proposed calibration method is suitable for wide bandwidth signal environments of LTE because it equalizes the impulse response of each RF module, which is ultimately equivalent to compensate the phase and amplitude differences among RF modules for the entire frequency band. In addition, the proposed method is applicable while the target eNB is transmitting or receiving a data stream. From various experimental tests obtained from a test-bed implemented with 2 RF modules, it has been verified that the proposed method provides a reliable calibration for Release 10 Time Division Duplex (TDD LTE signals. Phase errors after the calibration in our test-bed have been found to be about 2.418° and 2.983° for downlink and uplink, respectively.

  11. LHCb Silicon Tracker DAQ and DCS Online Systems

    CERN Multimedia

    Buechler, A; Rodriguez, P

    2009-01-01

    The LHCb experiment at the Large Hadron Collider (LHC) at CERN in Geneva Switzerland is specialized on precision measurements of b quark decays. The Silicon Tracker (ST) contributes a crucial part in tracking the particle trajectories and consists of two silicon micro-strip detectors, the Tracker Turicensis upstream of the LHCb magnet and the Inner Tracker downstream. The radiation and the magnetic field represent new challenges for the implementation of a Detector Control System (DCS) and the data acquisition (DAQ). The DAQ has to deal with more than 270K analog readout channels, 2K readout chips and real time DAQ at a rate of 1.1 MHz with data processing at TELL1 level. The TELL1 real time algorithms for clustering thresholds and other computations run on dedicated FPGAs that implement 13K configurable parameters per board, in total 1.17 K parameters for the ST. After data processing the total throughput amounts to about 6.4 Gbytes from an input data rate of around ~337 Gbytes per second. A finite state ma...

  12. HADOOP-BASED DISTRIBUTED SYSTEM FOR ONLINE PREDICTION OF AIR POLLUTION BASED ON SUPPORT VECTOR MACHINE

    Directory of Open Access Journals (Sweden)

    Z. Ghaemi

    2015-12-01

    Full Text Available The critical impact of air pollution on human health and environment in one hand and the complexity of pollutant concentration behavior in the other hand lead the scientists to look for advance techniques for monitoring and predicting the urban air quality. Additionally, recent developments in data measurement techniques have led to collection of various types of data about air quality. Such data is extremely voluminous and to be useful it must be processed at high velocity. Due to the complexity of big data analysis especially for dynamic applications, online forecasting of pollutant concentration trends within a reasonable processing time is still an open problem. The purpose of this paper is to present an online forecasting approach based on Support Vector Machine (SVM to predict the air quality one day in advance. In order to overcome the computational requirements for large-scale data analysis, distributed computing based on the Hadoop platform has been employed to leverage the processing power of multiple processing units. The MapReduce programming model is adopted for massive parallel processing in this study. Based on the online algorithm and Hadoop framework, an online forecasting system is designed to predict the air pollution of Tehran for the next 24 hours. The results have been assessed on the basis of Processing Time and Efficiency. Quite accurate predictions of air pollutant indicator levels within an acceptable processing time prove that the presented approach is very suitable to tackle large scale air pollution prediction problems.

  13. Hadoop-Based Distributed System for Online Prediction of Air Pollution Based on Support Vector Machine

    Science.gov (United States)

    Ghaemi, Z.; Farnaghi, M.; Alimohammadi, A.

    2015-12-01

    The critical impact of air pollution on human health and environment in one hand and the complexity of pollutant concentration behavior in the other hand lead the scientists to look for advance techniques for monitoring and predicting the urban air quality. Additionally, recent developments in data measurement techniques have led to collection of various types of data about air quality. Such data is extremely voluminous and to be useful it must be processed at high velocity. Due to the complexity of big data analysis especially for dynamic applications, online forecasting of pollutant concentration trends within a reasonable processing time is still an open problem. The purpose of this paper is to present an online forecasting approach based on Support Vector Machine (SVM) to predict the air quality one day in advance. In order to overcome the computational requirements for large-scale data analysis, distributed computing based on the Hadoop platform has been employed to leverage the processing power of multiple processing units. The MapReduce programming model is adopted for massive parallel processing in this study. Based on the online algorithm and Hadoop framework, an online forecasting system is designed to predict the air pollution of Tehran for the next 24 hours. The results have been assessed on the basis of Processing Time and Efficiency. Quite accurate predictions of air pollutant indicator levels within an acceptable processing time prove that the presented approach is very suitable to tackle large scale air pollution prediction problems.

  14. Design Context Aware Activity Recommender System for Iranian Customer Mind Activism in Online Shopping

    Directory of Open Access Journals (Sweden)

    Saber Pahlavan

    2013-11-01

    Full Text Available E-commerce has made life simple and innovative of individuals and groups. Nowadays, social networks are widely used by everyone. So, it is necessary to do appropriate and situation aware activities in these networks to gain benefits, In this research, a context aware recommender system has modeled for using in social networks focus on Iranian customer mind activism in online shopping. This system makes its recommendations for user based on behavior and activities of her friends in the same situation in social network. In other word, this modeled recommender system uses collaborative filtering algorithm. All the connections of user in social network, containing direct and indirect, are considered for recommending by recommender system; but, based on connection type and its distance to user, proportional factor is assigned. On the other, In this research we study the consumer behavior in online shopping of electronics especially in Iran. Primary data was collected through the questionnaire survey and by emails from personal contacts in two major cities of Iran. Price, time saving and convenience were identified as important factors which lead to certain buying behavior in online shopping.

  15. On-line Monitoring System based on Vibration Signal of High Voltage Circuit Breaker

    Directory of Open Access Journals (Sweden)

    Chao Fu

    2014-04-01

    Full Text Available High voltage circuit breaker is one of the most important switch apparatus in electrical power system. It play a role in the switch control, which can be used to switch the operating mode during normal operation (the equipment run or quit. In order to ensure the normal operation of the grid, it can be removed quickly when a malfunction on the device or circuit. Real-time online monitoring of high voltage circuit breaker can understand the running status, master the operation characteristics and its tend of development. As early as possible find the potential faults then take preventive measures timely, so as to ensure the reliable operation of power system. Online monitoring of high voltage circuit breakers can reduce the premature or unnecessary maintenance and maintenance cost, improve pertinence of the maintenance firstly. Secondly, it can improve the life of the switching device and improve the reliability of electric power system significantly. In this paper, on-line monitoring system based on vibration signal of high voltage circuit breaker is presented

  16. A Truthful Incentive Mechanism for Online Recruitment in Mobile Crowd Sensing System.

    Science.gov (United States)

    Chen, Xiao; Liu, Min; Zhou, Yaqin; Li, Zhongcheng; Chen, Shuang; He, Xiangnan

    2017-01-01

    We investigate emerging mobile crowd sensing (MCS) systems, in which new cloud-based platforms sequentially allocate homogenous sensing jobs to dynamically-arriving users with uncertain service qualities. Given that human beings are selfish in nature, it is crucial yet challenging to design an efficient and truthful incentive mechanism to encourage users to participate. To address the challenge, we propose a novel truthful online auction mechanism that can efficiently learn to make irreversible online decisions on winner selections for new MCS systems without requiring previous knowledge of users. Moreover, we theoretically prove that our incentive possesses truthfulness, individual rationality and computational efficiency. Extensive simulation results under both real and synthetic traces demonstrate that our incentive mechanism can reduce the payment of the platform, increase the utility of the platform and social welfare.

  17. A Truthful Incentive Mechanism for Online Recruitment in Mobile Crowd Sensing System

    Directory of Open Access Journals (Sweden)

    Xiao Chen

    2017-01-01

    Full Text Available We investigate emerging mobile crowd sensing (MCS systems, in which new cloud-based platforms sequentially allocate homogenous sensing jobs to dynamically-arriving users with uncertain service qualities. Given that human beings are selfish in nature, it is crucial yet challenging to design an efficient and truthful incentive mechanism to encourage users to participate. To address the challenge, we propose a novel truthful online auction mechanism that can efficiently learn to make irreversible online decisions on winner selections for new MCS systems without requiring previous knowledge of users. Moreover, we theoretically prove that our incentive possesses truthfulness, individual rationality and computational efficiency. Extensive simulation results under both real and synthetic traces demonstrate that our incentive mechanism can reduce the payment of the platform, increase the utility of the platform and social welfare.

  18. Small unmanned helicopter's attitude controller by an on-line adaptive fuzzy control system

    Institute of Scientific and Technical Information of China (English)

    GAO Tong-yue; RAO Jin-jun; GONG Zhen-bang; LUO Jun

    2009-01-01

    Since small unmanned helicopter flight attitude control process has strong time-varying characteristics and there are random disturbances, the conventional control methods with unchanged parameters are often unworkable. An on-line adaptive fuzzy control system (AFCS) was designed, in a way that does not depend on a process model of the plant or its approximation in the form of a Jacobian matrix. Neither is it necessary to know the desired response at each instant of time. AFCS implement a simultaneous on-line tuning of fuzzy rules and output scale of fuzzy control system. The two cascade controller design with an inner (attitude controller) and outer controller (navigation controller) of the small unmanned helicopter was proposed. At last, an attitude controller based on AFCS was implemented. The flight experiment showed that the proposed fuzzy logic controller provides quicker response, smaller overshoot, higher precision, robustness and adaptive ability. It satisfies the needs of autonomous flight.

  19. Development of On-Line Monitoring Systems for High Temperature Components in Power Plants

    Directory of Open Access Journals (Sweden)

    Hongcai Zhang

    2013-11-01

    Full Text Available To accurately detect deformation and extend the component life beyond the original design limits, structural safety monitoring techniques have attracted considerable attention in the power and process industries for decades. In this paper an on-line monitoring system for high temperature pipes in a power plant is developed. The extension-based sensing devices are amounted on straight pipes, T-Joints and elbows of a main steam pipeline. During on-site monitoring for more than two years, most of the sensors worked reliably and steadily. However, the direct strain gauge could not work for long periods because of the high temperature environment. Moreover, it is found that the installation and connection of the extensometers can have a significant influence on the measurement results. The on-line monitoring system has a good alarming function which is demonstrated by detecting a steam leakage of the header.

  20. Development of on-line monitoring systems for high temperature components in power plants.

    Science.gov (United States)

    Zhang, Hongcai; Jia, Jiuhong; Wang, Ning; Hu, Xiaoyin; Tu, Shan-Tung; Zhou, Shaoping; Wang, Zhengdong

    2013-11-13

    To accurately detect deformation and extend the component life beyond the original design limits, structural safety monitoring techniques have attracted considerable attention in the power and process industries for decades. In this paper an on-line monitoring system for high temperature pipes in a power plant is developed. The extension-based sensing devices are amounted on straight pipes, T-Joints and elbows of a main steam pipeline. During on-site monitoring for more than two years, most of the sensors worked reliably and steadily. However, the direct strain gauge could not work for long periods because of the high temperature environment. Moreover, it is found that the installation and connection of the extensometers can have a significant influence on the measurement results. The on-line monitoring system has a good alarming function which is demonstrated by detecting a steam leakage of the header.

  1. On-Line Broken-Bar Fault Diagnosis System of Induction Motor

    Institute of Scientific and Technical Information of China (English)

    ZHANG Rong; WANG Xiuhe

    2008-01-01

    Induction motor faults including mechanical and electrical faults are reviewed. The fault diagnosis methods are summarized. To analyze the influence of stator current, torque, speed and rotor current on faulted bars, a time-stepping transient finite element (FE) model of induction motor with bars faulted is created in this paper. With wavelet package analysis method and FFT method, the simulation result of finite element is analyzed. Based on the simulation analysis, the on-line fault diagnosis system of induction motor with bars faulted is developed. With the speed of broken bars motor changed from 1 478 r/min to 1 445 r/min, the FFT power spectra and the wavelet package decoupling factors are given. The comparison result shows that the on-line diagnosis system can detect broken-bar fault efficiently.

  2. Robust On-Line Fault Diagnosis for Nonlinear Difference-Algebraic Systems Using Least Squares Estimate

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    A new robust on-line fault diagnosis method based on least squares estimate for nonlinear difference-algebraic systems (DAS) with uncertainties is proposed. Based on the known nominal model of the DAS, this method firstly constructs an auxiliary system consisting of a difference equation and an algebraic equation, then, based on the relationship between the state deviation and the faults in the difference equation and the relationship between the algebraic variable deviation and the faults in algebraic equation, it identifies the faults on-line through least squares estimate. This method can not only detect, isolate and identify faults for DAS, but also give the upper bound of the error of fault identification. The simulation results indicate that it can give satisfactory diagnostic results for both abrupt and incipient faults.

  3. Development of On-Line Monitoring Systems for High Temperature Components in Power Plants

    Science.gov (United States)

    Zhang, Hongcai; Jia, Jiuhong; Wang, Ning; Hu, Xiaoyin; Tu, Shan-Tung; Zhou, Shaoping; Wang, Zhengdong

    2013-01-01

    To accurately detect deformation and extend the component life beyond the original design limits, structural safety monitoring techniques have attracted considerable attention in the power and process industries for decades. In this paper an on-line monitoring system for high temperature pipes in a power plant is developed. The extension-based sensing devices are amounted on straight pipes, T-Joints and elbows of a main steam pipeline. During on-site monitoring for more than two years, most of the sensors worked reliably and steadily. However, the direct strain gauge could not work for long periods because of the high temperature environment. Moreover, it is found that the installation and connection of the extensometers can have a significant influence on the measurement results. The on-line monitoring system has a good alarming function which is demonstrated by detecting a steam leakage of the header. PMID:24233026

  4. Online System for Faster Multipoint Linkage Analysis via Parallel Execution on Thousands of Personal Computers

    OpenAIRE

    Silberstein, M.; Tzemach, A.; Dovgolevsky, N.; Fishelson, M.; Schuster, A.; Geiger, D.

    2006-01-01

    Computation of LOD scores is a valuable tool for mapping disease-susceptibility genes in the study of Mendelian and complex diseases. However, computation of exact multipoint likelihoods of large inbred pedigrees with extensive missing data is often beyond the capabilities of a single computer. We present a distributed system called “SUPERLINK-ONLINE,” for the computation of multipoint LOD scores of large inbred pedigrees. It achieves high performance via the efficient parallelization of the ...

  5. Ontological assumptions in techno-anthropological explorations of online dialogue through information systems

    DEFF Research Database (Denmark)

    Otrel-Cass, Kathrin; Andrule, Kristine

    2015-01-01

    that focus on understanding the kind of dialogue that can be captured between different expert groups when they utilize information systems. We present the notion of ‘dialogic’ by Mikhail Bakhtin and contextualize it through an analysis of online dialogue. Dialogic or ‘conversation and inquiry’ is discussed...... as being mediated through human relationships. Acknowledging the existence of at least two voices the underlying differences between dialogue partners are highlighted....

  6. Developing an EEG based On-line Closed-loop Lapse Detection and Mitigation System

    Directory of Open Access Journals (Sweden)

    Yu-Te eWang

    2014-10-01

    Full Text Available In America, sixty percent of adults reported that they have driven a motor vehicle while feeling drowsy, and at least 15-20% of fatal car accidents are fatigue-related. This study translates previous laboratory-oriented neurophysiological research to design, develop, and test an On-line Closed-loop Lapse Detection and Mitigation (OCLDM System featuring a mobile wireless dry-sensor EEG headgear and a cell-phone based real-time EEG processing platform. Eleven subjects participated in an event-related lane-keeping task, in which they were instructed to manipulate a randomly deviated, fixed-speed cruising car on a 4-lane highway. This was simulated in a 1st person view with an 8-screen and 8-projector immersive virtual-realty environment. When the subjects experienced lapses or failed to respond to events during the experiment, auditory feedback was delivered to rectify the performance decrements. However, the arousing auditory signals were not always effective. The EEG spectra exhibited statistically significant differences between effective and ineffective arousing signals, suggesting that EEG spectra could be used as a countermeasure of the efficacy of arousing signals. In this on-line pilot study, the proposed OCLDM System was able to continuously detect EEG signatures of fatigue, deliver arousing feedback to subjects suffering momentary cognitive lapses, and assess the efficacy of the feedback in near real-time to rectify cognitive lapses. The on-line testing results of the OCLDM System validated the efficacy of the arousing signals in improving subjects' response times to the subsequent lane-departure events. This study may lead to a practical on-line lapse detection and mitigation system in real-world environments.

  7. Online Verification of Control Parameter Calculations in Communication Based Train Control System

    CERN Document Server

    Bu, Lei; Wang, Linzhang; Li, Xuandong

    2011-01-01

    Communication Based Train Control (CBTC) system is the state-of-the-art train control system. In a CBTC system, to guarantee the safety of train operation, trains communicate with each other intensively and adjust their control modes autonomously by computing critical control parameters, e.g. velocity range, according to the information they get. As the correctness of the control parameters generated are critical to the safety of the system, a method to verify these parameters is a strong desire in the area of train control system. In this paper, we present our ideas of how to model and verify the control parameter calculations in a CBTC system efficiently. - As the behavior of the system is highly nondeterministic, it is difficult to build and verify the complete behavior space model of the system online in advance. Thus, we propose to model the system according to the ongoing behavior model induced by the control parameters. - As the parameters are generated online and updated very quickly, the verification...

  8. Development of an on-line measuring and monitoring system for fouling based on Delphi

    Science.gov (United States)

    Wang, Yuanyuan; Wang, Jianguo

    2010-12-01

    The presence of fouling reduced the heat transfer capability of heat transfer equipments and increased the flow resistance of the medium. Thus the resulting series of economic losses received worldwide attention of the relevant heat transfer industry and countries. For the heating system fouling, direct measurement is nearly impossible. And it is extremely difficulty of structuring mathematic model. Although there are existing monitoring methods, results are not satisfactory. This paper intends to develop a new on-line measuring and monitoring system for heating system fouling. The operating theory of this on-line measuring and monitoring system is based on the soft-sensor technology and Expert System. We select some easily measurements as primary variables, such as pressures, flow rates and temperatures. Through some algorithms, we obtained dozens of secondary variables, for example, the coefficient of flow resistance, the efficiency and cost of heating system and so on. Based on these variables, we construct the knowledge base of this System. This system mainly uses Delphi and Excel as development tools. Now, the system is running well in some heating station, and has reached the expecting result.

  9. An online detection system for aggregate sizes and shapes based on digital image processing

    Science.gov (United States)

    Yang, Jianhong; Chen, Sijia

    2016-07-01

    Traditional aggregate size measuring methods are time-consuming, taxing, and do not deliver online measurements. A new online detection system for determining aggregate size and shape based on a digital camera with a charge-coupled device, and subsequent digital image processing, have been developed to overcome these problems. The system captures images of aggregates while falling and flat lying. Using these data, the particle size and shape distribution can be obtained in real time. Here, we calibrate this method using standard globules. Our experiments show that the maximum particle size distribution error was only 3 wt%, while the maximum particle shape distribution error was only 2 wt% for data derived from falling aggregates, having good dispersion. In contrast, the data for flat-lying aggregates had a maximum particle size distribution error of 12 wt%, and a maximum particle shape distribution error of 10 wt%; their accuracy was clearly lower than for falling aggregates. However, they performed well for single-graded aggregates, and did not require a dispersion device. Our system is low-cost and easy to install. It can successfully achieve online detection of aggregate size and shape with good reliability, and it has great potential for aggregate quality assurance.

  10. An Implementation of Outpatient Online Registration Information System of Mutiara Bunda Hospital

    Directory of Open Access Journals (Sweden)

    Masniah

    2015-12-01

    Full Text Available Outpatient care is one of the medical services in Mutiara Bunda hospital. The management of outpatient registration of Mutiara Bunda Hospital used conventional way. Within 1 hour serving, 5 patients were enrolled with an average time of 13 minutes per patient. This caused the registration queue to get outpatient services. The study was conducted with the aim to produce outpatient online registration information system design of Mutiara Bunda Hospital in order to increase outpatient registration service and to manage data in getting medical care. The patients register on Outpatient Online Registration Information System without having to come first to the hospital and get a queue number, so they can estimate the waiting time in the hospital to get medical care at Mutiara Bunda Hospital; while the patients who come to the hospital are served directly by the registrar. From the results of the research, it can be concluded that the application of Outpatient Online Registration Information System help in managing and processing data of patient registration to be able to get medical care immediately at Mutiara Bunda Hospital.

  11. Development and evaluation of an online CO(2) evolution test and a multicomponent biodegradation test system.

    Science.gov (United States)

    Strotmann, Uwe; Reuschenbach, Peter; Schwarz, Helmut; Pagga, Udo

    2004-08-01

    Well-established biodegradation tests use biogenously evolved carbon dioxide (CO(2)) as an analytical parameter to determine the ultimate biodegradability of substances. A newly developed analytical technique based on the continuous online measurement of conductivity showed its suitability over other techniques. It could be demonstrated that the method met all criteria of established biodegradation tests, gave continuous biodegradation curves, and was more reliable than other tests. In parallel experiments, only small variations in the biodegradation pattern occurred. When comparing the new online CO(2) method with existing CO(2) evolution tests, growth rates and lag periods were similar and only the final degree of biodegradation of aniline was slightly lower. A further test development was the unification and parallel measurement of all three important summary parameters for biodegradation--i.e., CO(2) evolution, determination of the biochemical oxygen demand (BOD), and removal of dissolved organic carbon (DOC)--in a multicomponent biodegradation test system (MCBTS). The practicability of this test method was demonstrated with aniline. This test system had advantages for poorly water-soluble and highly volatile compounds and allowed the determination of the carbon fraction integrated into biomass (heterotrophic yield). The integrated online measurements of CO(2) and BOD systems produced continuous degradation curves, which better met the stringent criteria of ready biodegradability (60% biodegradation in a 10-day window). Furthermore the data could be used to calculate maximal growth rates for the modeling of biodegradation processes.

  12. Development and Evaluation of an Online CO2 Evolution Test and a Multicomponent Biodegradation Test System

    Science.gov (United States)

    Strotmann, Uwe; Reuschenbach, Peter; Schwarz, Helmut; Pagga, Udo

    2004-01-01

    Well-established biodegradation tests use biogenously evolved carbon dioxide (CO2) as an analytical parameter to determine the ultimate biodegradability of substances. A newly developed analytical technique based on the continuous online measurement of conductivity showed its suitability over other techniques. It could be demonstrated that the method met all criteria of established biodegradation tests, gave continuous biodegradation curves, and was more reliable than other tests. In parallel experiments, only small variations in the biodegradation pattern occurred. When comparing the new online CO2 method with existing CO2 evolution tests, growth rates and lag periods were similar and only the final degree of biodegradation of aniline was slightly lower. A further test development was the unification and parallel measurement of all three important summary parameters for biodegradation—i.e., CO2 evolution, determination of the biochemical oxygen demand (BOD), and removal of dissolved organic carbon (DOC)—in a multicomponent biodegradation test system (MCBTS). The practicability of this test method was demonstrated with aniline. This test system had advantages for poorly water-soluble and highly volatile compounds and allowed the determination of the carbon fraction integrated into biomass (heterotrophic yield). The integrated online measurements of CO2 and BOD systems produced continuous degradation curves, which better met the stringent criteria of ready biodegradability (60% biodegradation in a 10-day window). Furthermore the data could be used to calculate maximal growth rates for the modeling of biodegradation processes. PMID:15294794

  13. A Discrete Event System approach to On-line Testing of digital circuits with measurement limitation

    Directory of Open Access Journals (Sweden)

    P.K. Biswal

    2016-09-01

    Full Text Available In the present era of complex systems like avionics, industrial processes, electronic circuits, etc., on-the-fly or on-line fault detection is becoming necessary to provide uninterrupted services. Measurement limitation based fault detection schemes are applied to a wide range of systems because sensors cannot be deployed in all the locations from which measurements are required. This paper focuses towards On-Line Testing (OLT of faults in digital electronic circuits under measurement limitation using the theory of discrete event systems. Most of the techniques presented in the literature on OLT of digital circuits have emphasized on keeping the scheme non-intrusive, low area overhead, high fault coverage, low detection latency etc. However, minimizing tap points (i.e., measurement limitation of the circuit under test (CUT by the on-line tester was not considered. Minimizing tap points reduces load on the CUT and this reduces the area overhead of the tester. However, reduction in tap points compromises fault coverage and detection latency. This work studies the effect of minimizing tap points on fault coverage, detection latency and area overhead. Results on ISCAS89 benchmark circuits illustrate that measurement limitation have minimal impact on fault coverage and detection latency but reduces the area overhead of the tester. Further, it was also found that for a given detection latency and fault coverage, area overhead of the proposed scheme is lower compared to other similar schemes reported in the literature.

  14. Metaboli-Net: online groupware system providing counseling guidance for patients with metabolic syndrome.

    Science.gov (United States)

    Kuwata, Shigeki; Taniguchi, Shin-ichi; Kato, Atsuko; Inoue, Kazuoki; Yamamoto, Naoya; Ohkura, Tsuyoshi; Teramoto, Kei; Shigemasa, Chiaki; Kondoh, Hiroshi

    2010-01-01

    This study presented a newly developed online groupware system, Metaboli-Net, to yield counseling guidance on diet and exercise to patients with metabolic syndrome. A distinctive feature adopted in the system to maintain the retention rate of patients was the social network service (SNS) that enables the patients to share their dietary and relevant health information with other participants in the same group on the network. A pilot study was conducted to prove the effectiveness of the system in improving the patient's lifestyle and dietary health awareness. SNS also contributed to the participant's adherence to intervention programs.

  15. The Design of Partial Discharge On-Line Monitoring System for XLPE Power Cable

    Directory of Open Access Journals (Sweden)

    Chen Rui-Long

    2013-09-01

    Full Text Available Partial discharge detection is an important means to assess the situation of XLPE power cable’s insulation. This study has developed an on-line monitoring system which applies to the medium voltage XLPE cable on partial discharge, described its working principle, components of hardware, software designing and program implementation in details. Through monitoring the partial discharge signal in grounding lines of the XLPE cable’s shield, the system integrated assess the situation of XLPE cable’s insulation. The results of running show that the system is stable and reliable.

  16. Object-Oriented Control System Design Using On-Line Training of Artificial Neural Networks

    Science.gov (United States)

    Rubaai, Ahmed

    1997-01-01

    This report deals with the object-oriented model development of a neuro-controller design for permanent magnet (PM) dc motor drives. The system under study is described as a collection of interacting objects. Each object module describes the object behaviors, called methods. The characteristics of the object are included in its variables. The knowledge of the object exists within its variables, and the performance is determined by its methods. This structure maps well to the real world objects that comprise the system being modeled. A dynamic learning architecture that possesses the capabilities of simultaneous on-line identification and control is incorporated to enforce constraints on connections and control the dynamics of the motor. The control action is implemented "on-line", in "real time" in such a way that the predicted trajectory follows a specified reference model. A design example of controlling a PM dc motor drive on-line shows the effectiveness of the design tool. This will therefore be very useful in aerospace applications. It is expected to provide an innovative and noval software model for the rocket engine numerical simulator executive.

  17. Field Validation of Food Service Listings: A Comparison of Commercial and Online Geographic Information System Databases

    Science.gov (United States)

    Seliske, Laura; Pickett, William; Bates, Rebecca; Janssen, Ian

    2012-01-01

    Many studies examining the food retail environment rely on geographic information system (GIS) databases for location information. The purpose of this study was to validate information provided by two GIS databases, comparing the positional accuracy of food service places within a 1 km circular buffer surrounding 34 schools in Ontario, Canada. A commercial database (InfoCanada) and an online database (Yellow Pages) provided the addresses of food service places. Actual locations were measured using a global positioning system (GPS) device. The InfoCanada and Yellow Pages GIS databases provided the locations for 973 and 675 food service places, respectively. Overall, 749 (77.1%) and 595 (88.2%) of these were located in the field. The online database had a higher proportion of food service places found in the field. The GIS locations of 25% of the food service places were located within approximately 15 m of their actual location, 50% were within 25 m, and 75% were within 50 m. This validation study provided a detailed assessment of errors in the measurement of the location of food service places in the two databases. The location information was more accurate for the online database, however, when matching criteria were more conservative, there were no observed differences in error between the databases. PMID:23066385

  18. Field validation of food service listings: a comparison of commercial and online geographic information system databases.

    Science.gov (United States)

    Seliske, Laura; Pickett, William; Bates, Rebecca; Janssen, Ian

    2012-08-01

    Many studies examining the food retail environment rely on geographic information system (GIS) databases for location information. The purpose of this study was to validate information provided by two GIS databases, comparing the positional accuracy of food service places within a 1 km circular buffer surrounding 34 schools in Ontario, Canada. A commercial database (InfoCanada) and an online database (Yellow Pages) provided the addresses of food service places. Actual locations were measured using a global positioning system (GPS) device. The InfoCanada and Yellow Pages GIS databases provided the locations for 973 and 675 food service places, respectively. Overall, 749 (77.1%) and 595 (88.2%) of these were located in the field. The online database had a higher proportion of food service places found in the field. The GIS locations of 25% of the food service places were located within approximately 15 m of their actual location, 50% were within 25 m, and 75% were within 50 m. This validation study provided a detailed assessment of errors in the measurement of the location of food service places in the two databases. The location information was more accurate for the online database, however, when matching criteria were more conservative, there were no observed differences in error between the databases.

  19. Evaluating user reputation in online rating systems via an iterative group-based ranking method

    CERN Document Server

    Gao, Jian

    2015-01-01

    Reputation is a valuable asset in online social lives and it has drawn increased attention. How to evaluate user reputation in online rating systems is especially significant due to the existence of spamming attacks. To address this issue, so far, a variety of methods have been proposed, including network-based methods, quality-based methods and group-based ranking method. In this paper, we propose an iterative group-based ranking (IGR) method by introducing an iterative reputation-allocation process into the original group-based ranking (GR) method. More specifically, users with higher reputation have higher weights in dominating the corresponding group sizes. The reputation of users and the corresponding group sizes are iteratively updated until they become stable. Results on two real data sets suggest that the proposed IGR method has better performance and its robustness is considerably improved comparing with the original GR method. Our work highlights the positive role of users' grouping behavior towards...

  20. Professional Partnerships: Supporting the Preparation of Pre-Service Teachers Through a Tiered Online Mentoring System

    Directory of Open Access Journals (Sweden)

    Barbara Schwartz-Bechet

    2011-08-01

    Full Text Available The University of Maryland University College’s (UMUC Department of Education developed a program to increase achievement of secondary school students and increase retention of Master of Arts in Teaching Program (MAT pre-service teacher candidates entitled, “Professional Partnerships”. “Professional Partnerships” is a tiered system of support that promotes stakeholder success by providing online mentoring to pre-service teacher candidates from master mentor teachers. The master mentor teachers were provided with web conferencing workshops and online mentoring in the use of technology tools, The goals of the program are based upon the Redesign of Teacher Education and a research based framework that strengthens partnerships with local school districts to include: improvement of secondary student achievement, enhancement of instruction provided by teacher candidates and in-class teachers through the use of science, technology, engineering, and math (STEM content as a tool for instruction, improvement, assessment, and communication within the global educational community.

  1. Preventing Chronic Pain: A Human Systems Approach—Results From a Massive Open Online Course

    Science.gov (United States)

    Anderson, Kathleen; Clavel, Alfred; Fricton, Regina; Hathaway, Kate; Kang, Wenjun; Jaeger, Bernadette; Maixner, William; Pesut, Daniel; Russell, Jon; Weisberg, Mark B.; Whitebird, Robin

    2015-01-01

    Chronic pain conditions are the top reason patients seek care, the most common reason for disability and addiction, and the biggest driver of healthcare costs; their treatment costs more than cancer, heart disease, dementia, and diabetes care. The personal impact in terms of suffering, disability, depression, suicide, and other problems is incalculable. There has been much effort to prevent many medical and dental conditions, but little effort has been directed toward preventing chronic pain. To address this deficit, a massive open online course (MOOC) was developed for students and healthcare professionals. “Preventing Chronic Pain: A Human Systems Approach” was offered by the University of Minnesota through the online platform Coursera. The first offering of this free open course was in the spring of 2014 and had 23 650 participants; 53% were patients or consumers interested in pain. This article describes the course concepts in preventing chronic pain, the analytic data from course participants, and postcourse evaluation forms. PMID:26421231

  2. Preventing Chronic Pain: A Human Systems Approach-Results From a Massive Open Online Course.

    Science.gov (United States)

    Fricton, James; Anderson, Kathleen; Clavel, Alfred; Fricton, Regina; Hathaway, Kate; Kang, Wenjun; Jaeger, Bernadette; Maixner, William; Pesut, Daniel; Russell, Jon; Weisberg, Mark B; Whitebird, Robin

    2015-09-01

    Chronic pain conditions are the top reason patients seek care, the most common reason for disability and addiction, and the biggest driver of healthcare costs; their treatment costs more than cancer, heart disease, dementia, and diabetes care. The personal impact in terms of suffering, disability, depression, suicide, and other problems is incalculable. There has been much effort to prevent many medical and dental conditions, but little effort has been directed toward preventing chronic pain. To address this deficit, a massive open online course (MOOC) was developed for students and healthcare professionals. "Preventing Chronic Pain: A Human Systems Approach" was offered by the University of Minnesota through the online platform Coursera. The first offering of this free open course was in the spring of 2014 and had 23 650 participants; 53% were patients or consumers interested in pain. This article describes the course concepts in preventing chronic pain, the analytic data from course participants, and postcourse evaluation forms.

  3. Development of a GIS-Based Online Discussion System for Scientists with Google Earth API and Twitter

    Science.gov (United States)

    Ohtake, S.; Demura, H.; Hirata, N.; Terazono, J.

    2011-03-01

    This study has developed an online discussion system cooperating with GIS for researchers in planetary sciences. We focused on mushup approach with the existing web services; Google Earth API and Twitter.

  4. On-line scheduling of Automatics and flexible Manufacturing System using SARSA technique

    Science.gov (United States)

    Aissani, N.; Beldjilali, B.

    2008-06-01

    In this paper context, we will show what will be the best organization of decision entities in flexible manufacturing system, but also show our approach steps to achieve a manufacturing control system which is more reliable insofar as it has responding to queries in online. With this intention, we use a multi-agent system of which the decisions taken by the system are the result of those agents group work, these agents ensure in the same time manufacturing scheduling solution and a continuously improvement of their quality thanks to the reinforcement learning technique and particularly SARSA algorithm which was introduced to them. This technique of learning makes it possible the agents to be adaptive and to learn the best behavior in their various roles (answer the requests, self-organization, plan…) without attenuating the system on-line. A computer implementation and experimentation of this model are provided in this paper to demonstrate the contribution of our approach compared to a famous metaheuristic: tabu search, widely used for scheduling in complex manufacturing systems.

  5. On-line parameter and delay estimation of continuous-time dynamic systems

    Directory of Open Access Journals (Sweden)

    Kozłowski Janusz

    2015-06-01

    Full Text Available The problem of on-line identification of non-stationary delay systems is considered. The dynamics of supervised industrial processes are usually modeled by ordinary differential equations. Discrete-time mechanizations of continuous-time process models are implemented with the use of dedicated finite-horizon integrating filters. Least-squares and instrumental variable procedures mechanized in recursive forms are applied for simultaneous identification of input delay and spectral parameters of the system models. The performance of the proposed estimation algorithms is verified in an illustrative numerical simulation study.

  6. Online fault location on AC cables in underground transmission systems using screen currents

    DEFF Research Database (Denmark)

    Jensen, Christian Flytkjær; Nanayakkara, O.M.K.K; Rajapakse, Athula

    This paper studies online travelling wave methods for fault location on a crossbonded cable system using screen currents. During the construction of the electrical connection to the 400 MW off shore wind farm Anholt, it was possible to perform measurements on a 38.4 km crossbonded cable system...... coils if the screen currents contain the necessary information for accurate fault location. In this paper, this is examined by analysis of field measurements and through a study of simulations. The wavelet transform and visual inspection methods are used and the accuracy is compared. Field measurements...... and simulations are compared for testing the reliability of using simulations for studying fault location methods....

  7. Approximation modeling for the online performance management of distributed computing systems.

    Science.gov (United States)

    Kusic, Dara; Kandasamy, Nagarajan; Jiang, Guofei

    2008-10-01

    A promising method of automating management tasks in computing systems is to formulate them as control or optimization problems in terms of performance metrics. For an online optimization scheme to be of practical value in a distributed setting, however, it must successfully tackle the curses of dimensionality and modeling. This paper develops a hierarchical control framework to solve performance management problems in distributed computing systems operating in a data center. Concepts from approximation theory are used to reduce the computational burden of controlling such large-scale systems. The relevant approximations are made in the construction of the dynamical models to predict system behavior and in the solution of the associated control equations. Using a dynamic resource-provisioning problem as a case study, we show that a computing system managed by the proposed control framework with approximation models realizes profit gains that are, in the best case, within 1% of a controller using an explicit model of the system.

  8. An on-line remote supervisory system for microparticles based on image analysis

    Institute of Scientific and Technical Information of China (English)

    LIU Wei-hua; JIANG Ming-shun; SUI Qing-mei

    2011-01-01

    A new on-line remote particle analysis system based on image processing has been developed to measure microparticles.The system is composed of particle collector sensor (PCS),particle image sensor (PIS),image remote wansmit module and image processing system.Then some details of image processing are discussed.The main advantage of this system is more convenient in particle sample collection and particle image acquisition.The particle size can be obtained using the system with a deviation abot less than 1 μm,and the particle number can be obtained without deviation,The developed system is also convenient and versatile for other analyses of microparticle for academic and industrial application.

  9. An integrated on-line irradiation and in situ live cell imaging system

    Science.gov (United States)

    Liang, Ying; Fu, Qibin; Wang, Weikang; Liu, Yu; Liu, Feng; Yang, Gen; Wang, Yugang

    2015-09-01

    Ionizing radiation poses a threat to genome integrity by introducing DNA damages, particularly DNA double-strand breaks (DSB) in cells. Understanding how cells react to DSB and maintain genome integrity is of major importance, since increasing evidences indicate the links of DSB with genome instability and cancer predispositions. However, tracking the dynamics of DNA damages and repair response to ionizing radiation in individual cell is difficult. Here we describe the development of an on-line irradiation and in situ live cell imaging system based on isotopic sources at Institute of Heavy Ion Physics, Peking University. The system was designed to irradiate cells and in situ observe the cellular responses to ionizing radiation in real time. On-line irradiation was achieved by mounting a metal framework that hold an isotopic γ source above the cell culture dish for γ irradiation; or by integrating an isotopic α source to an objective lens under the specialized cell culture dish for α irradiation. Live cell imaging was performed on a confocal microscope with an environmental chamber installed on the microscope stage. Culture conditions in the environment chamber such as CO2, O2 concentration as well as temperature are adjustable, which further extends the capacity of the system and allows more flexible experimental design. We demonstrate the use of this system by tracking the DSB foci formation and disappearance in individual cells after exposure to irradiation. On-line irradiation together with in situ live cell imaging in adjustable culture conditions, the system overall provides a powerful tool for investigation of cellular and subcellular response to ionizing radiation under different physiological conditions such as hyperthermia or hypoxia.

  10. A GIS-based 3D online information system for underground energy storage in northern Germany

    Science.gov (United States)

    Nolde, Michael; Malte, Schwanebeck; Ehsan, Biniyaz; Rainer, Duttmann

    2015-04-01

    We would like to present the concept and current state of development of a GIS-based 3D online information system for underground energy storage. Its aim is to support the local authorities through pre-selection of possible sites for thermal, electrical and substantial underground energy storages. Since the extension of renewable energies has become legal requirement in Germany, the underground storing of superfluously produced green energy (such as during a heavy wind event) in the form of compressed air, gas or heated water has become increasingly important. However, the selection of suitable sites is a complex task. The presented information system uses data of geological features such as rock layers, salt domes and faults enriched with attribute data such as rock porosity and permeability. This information is combined with surface data of the existing energy infrastructure, such as locations of wind and biogas stations, powerline arrangement and cable capacity, and energy distribution stations. Furthermore, legal obligations such as protected areas on the surface and current underground mining permissions are used for the process of pre-selecting sites suitable for energy storage. Not only the current situation but also prospective scenarios, such as expected growth in produced amount of energy are incorporated in the system. While the process of pre-selection itself is completely automated, the user has full control of the weighting of the different factors via the web interface. The system is implemented as an online 3D server GIS environment, so that it can easily be utilized in any web browser. The results are visualized online as interactive 3d graphics. The information system is implemented in the Python programming language in combination with current Web standards, and is build using only free and open source software. It is being developed at Kiel University as part of the ANGUS+ project (lead by Prof. Sebastian Bauer) for the federal state of

  11. An integrated on-line irradiation and in situ live cell imaging system

    Energy Technology Data Exchange (ETDEWEB)

    Liang, Ying; Fu, Qibin; Wang, Weikang; Liu, Yu; Liu, Feng; Yang, Gen, E-mail: gen.yang@pku.edu.cn; Wang, Yugang

    2015-09-01

    Ionizing radiation poses a threat to genome integrity by introducing DNA damages, particularly DNA double-strand breaks (DSB) in cells. Understanding how cells react to DSB and maintain genome integrity is of major importance, since increasing evidences indicate the links of DSB with genome instability and cancer predispositions. However, tracking the dynamics of DNA damages and repair response to ionizing radiation in individual cell is difficult. Here we describe the development of an on-line irradiation and in situ live cell imaging system based on isotopic sources at Institute of Heavy Ion Physics, Peking University. The system was designed to irradiate cells and in situ observe the cellular responses to ionizing radiation in real time. On-line irradiation was achieved by mounting a metal framework that hold an isotopic γ source above the cell culture dish for γ irradiation; or by integrating an isotopic α source to an objective lens under the specialized cell culture dish for α irradiation. Live cell imaging was performed on a confocal microscope with an environmental chamber installed on the microscope stage. Culture conditions in the environment chamber such as CO{sub 2}, O{sub 2} concentration as well as temperature are adjustable, which further extends the capacity of the system and allows more flexible experimental design. We demonstrate the use of this system by tracking the DSB foci formation and disappearance in individual cells after exposure to irradiation. On-line irradiation together with in situ live cell imaging in adjustable culture conditions, the system overall provides a powerful tool for investigation of cellular and subcellular response to ionizing radiation under different physiological conditions such as hyperthermia or hypoxia.

  12. Strategies for automatic online treatment plan reoptimization using clinical treatment planning system: a planning parameters study.

    Science.gov (United States)

    Li, Taoran; Wu, Qiuwen; Zhang, You; Vergalasova, Irina; Lee, W Robert; Yin, Fang-Fang; Wu, Q Jackie

    2013-11-01

    Adaptive radiation therapy for prostate cancer using online reoptimization provides an improved control of interfractional anatomy variations. However, the clinical implementation of online reoptimization is currently limited by the low efficiency of current strategies and the difficulties associated with integration into the current treatment planning system. This study investigates the strategies for performing fast (~2 min) automatic online reoptimization with a clinical fluence-map-based treatment planning system; and explores the performance with different input parameters settings: dose-volume histogram (DVH) objective settings, starting stage, and iteration number (in the context of real time planning). Simulated treatments of 10 patients were reoptimized daily for the first week of treatment (5 fractions) using 12 different combinations of optimization strategies. Options for objective settings included guideline-based RTOG objectives, patient-specific objectives based on anatomy on the planning CT, and daily-CBCT anatomy-based objectives adapted from planning CT objectives. Options for starting stages involved starting reoptimization with and without the original plan's fluence map. Options for iteration numbers were 50 and 100. The adapted plans were then analyzed by statistical modeling, and compared both in terms of dosimetry and delivery efficiency. All online reoptimized plans were finished within ~2 min with excellent coverage and conformity to the daily target. The three input parameters, i.e., DVH objectives, starting stage, and iteration number, contributed to the outcome of optimization nearly independently. Patient-specific objectives generally provided better OAR sparing compared to guideline-based objectives. The benefit in high-dose sparing from incorporating daily anatomy into objective settings was positively correlated with the relative change in OAR volumes from planning CT to daily CBCT. The use of the original plan fluence map as the

  13. Strategies for automatic online treatment plan reoptimization using clinical treatment planning system: A planning parameters study

    Energy Technology Data Exchange (ETDEWEB)

    Li, Taoran; Wu, Qiuwen; Zhang, You; Vergalasova, Irina; Lee, W. Robert; Yin, Fang-Fang; Wu, Q. Jackie [Duke Medical Physics Graduate Program, Duke University, Durham, North Carolina 27705 and Department of Radiation Oncology, Duke University Medical Center, Durham, North Carolina 27710 (United States)

    2013-11-15

    Purpose: Adaptive radiation therapy for prostate cancer using online reoptimization provides an improved control of interfractional anatomy variations. However, the clinical implementation of online reoptimization is currently limited by the low efficiency of current strategies and the difficulties associated with integration into the current treatment planning system. This study investigates the strategies for performing fast (∼2 min) automatic online reoptimization with a clinical fluence-map-based treatment planning system; and explores the performance with different input parameters settings: dose-volume histogram (DVH) objective settings, starting stage, and iteration number (in the context of real time planning).Methods: Simulated treatments of 10 patients were reoptimized daily for the first week of treatment (5 fractions) using 12 different combinations of optimization strategies. Options for objective settings included guideline-based RTOG objectives, patient-specific objectives based on anatomy on the planning CT, and daily-CBCT anatomy-based objectives adapted from planning CT objectives. Options for starting stages involved starting reoptimization with and without the original plan's fluence map. Options for iteration numbers were 50 and 100. The adapted plans were then analyzed by statistical modeling, and compared both in terms of dosimetry and delivery efficiency.Results: All online reoptimized plans were finished within ∼2 min with excellent coverage and conformity to the daily target. The three input parameters, i.e., DVH objectives, starting stage, and iteration number, contributed to the outcome of optimization nearly independently. Patient-specific objectives generally provided better OAR sparing compared to guideline-based objectives. The benefit in high-dose sparing from incorporating daily anatomy into objective settings was positively correlated with the relative change in OAR volumes from planning CT to daily CBCT. The use of the

  14. Soft Skills in Online Job Advertisements: An Analysis of British Online Job Ads for Project Managers and System Engineers

    OpenAIRE

    Grandjean, Noémie

    2017-01-01

    In the working world, soft skills are nowadays considered as important as hard skills. Whereas hard skills are technical skills, soft skills are personal attributes that enable someone to work better. Job advertisements are one medium by which employers communicate which skills they expect from candidates. This thesis aims at identifying and analysing soft skills in 120 online job-advertisements. It focuses on one country, the United Kingdom, and four positions, namely non-senior / senior Pro...

  15. Reinforcement learning controller design for affine nonlinear discrete-time systems using online approximators.

    Science.gov (United States)

    Yang, Qinmin; Jagannathan, Sarangapani

    2012-04-01

    In this paper, reinforcement learning state- and output-feedback-based adaptive critic controller designs are proposed by using the online approximators (OLAs) for a general multi-input and multioutput affine unknown nonlinear discretetime systems in the presence of bounded disturbances. The proposed controller design has two entities, an action network that is designed to produce optimal signal and a critic network that evaluates the performance of the action network. The critic estimates the cost-to-go function which is tuned online using recursive equations derived from heuristic dynamic programming. Here, neural networks (NNs) are used both for the action and critic whereas any OLAs, such as radial basis functions, splines, fuzzy logic, etc., can be utilized. For the output-feedback counterpart, an additional NN is designated as the observer to estimate the unavailable system states, and thus, separation principle is not required. The NN weight tuning laws for the controller schemes are also derived while ensuring uniform ultimate boundedness of the closed-loop system using Lyapunov theory. Finally, the effectiveness of the two controllers is tested in simulation on a pendulum balancing system and a two-link robotic arm system.

  16. Using a Web-Based System to Estimate the Cost of Online Course Production

    Science.gov (United States)

    Gordon, Stuart; He, Wu; Abdous, M'hammed

    2009-01-01

    The increasing demand for online courses requires efficient and low cost production. Since the decision to develop online courses is often affected by financial factors, it is becoming increasingly important to determine, upfront, the cost of online course production. Many of the programs and educators interested in developing online courses…

  17. Using a Web-Based System to Estimate the Cost of Online Course Production

    Science.gov (United States)

    Gordon, Stuart; He, Wu; Abdous, M'hammed

    2009-01-01

    The increasing demand for online courses requires efficient and low cost production. Since the decision to develop online courses is often affected by financial factors, it is becoming increasingly important to determine, upfront, the cost of online course production. Many of the programs and educators interested in developing online courses…

  18. Online calibration technique for LDV in SINS/LDV integrated navigation systems

    Science.gov (United States)

    Wang, Qi; Gao, Chunfeng; Wei, Guo; Long, Xingwu

    2017-05-01

    There are the scale factor error of LDV (laser Doppler velocimeter) and the misalignment between the SINS (Strapdown inertial navigation system) and the vehicle in a SINS/LDV integrated navigation system. In this paper, the effects of these errors on the attitude, velocity and position of dead reckoning are derived, and a new online calibration method aiming to calibrate the scale factor of LDV and the misalignment between the SINS and the vehicle for the integrated system is put forward. This method, which is utilize the velocity and position of the Global Position System (GPS) as references, use the velocity error and position error of dead reckoning to estimate these errors. Through simulation and experiment, the validity and feasibility of the method are verified. The results show that the scale factor and the misalignment can be calibrated with satisfying accuracy, and the related research can provide technical support for high precision navigation of SINS/LDV integrated navigation systems.

  19. A Control Scheme Based on Online Delay Evaluation for a Class of Networked Control Systems

    Institute of Scientific and Technical Information of China (English)

    马向华; 谢剑英; 魏震

    2004-01-01

    A control scheme that integrates control technology with communication technology to solve the delay problem is introduced for a class of networked control systems: Networked Half-Link Systems (NHLS). Concretely, we use the master-slave clock synchronization technology to evaluate the delays online, and then the LQ optimal control based on delays is adopted to stabilize the controlled plant. During the clock synchronization process, the error of evaluated delays is inevitably induced from the clock synchronization error, which will deteriorate the system performances, and even make system unstable in certain cases. Hence, the discussions about the clock error, and the related control analysis and design are also developed. Specifically, we present the sufficient conditions of controller parameters that guarantee the system stability, and a controller design method based on the error of delays is addressed thereafter. The experiments based on a CANbus platform are fulfilled, and the experimental results verify the previous analytic results finally.

  20. Lessons Drawn from Implementation of Online Tutoring System in Physics Courses

    CERN Document Server

    Goldman, Itzhak

    2007-01-01

    The online tutoring system CAPA was implemented at Afeka College in the academic year 2000-2001 in calculus based physics courses. It was used also in the academic year 2001-2002 and was very successful in improving understanding and achievements of the students. The paper describes the system features and the case study of its implementation. Lessons drawn from use of the CAPA system are discussed. The system no doubt contributed significantly to increased understanding and higher achievements in the final exams. This was at a price that students felt that they had to devote more time to study than traditionally required. The instructor has to invest more time than traditionally done in composing new problems and managing the system. However, the increased interaction with the students makes the teaching process much more interesting and rewarding.

  1. Research and application of online measurement system of tire tread profile in automobile tire production

    Science.gov (United States)

    Wang, Pengyao; Chen, Xiangguang; Yang, Kai; Liu, Xuejiao

    2017-01-01

    To improve the measuring efficiency of width and thickness of tire tread in the process of automobile tire production, the actual condition for the tire production process is analyzed, and a fast online measurement system based on moving tire tread of tire specifications is established in this paper. The coordinate data of tire tread profile is acquired by 3D laser sensor, and we use C# language for programming which is an object-oriented programming language to complete the development of client program. The system with laser sensor can provide real-time display of tire tread profile and the data to require in the process of tire production. Experimental results demonstrate that the measuring precision of the system is <= 1mm, it can meet the measurement requirements of the production process, and the system has the characteristics of convenient installation and testing, system stable operation.

  2. An XML-based Multi-Agent System for Supporting Online Recruitment Services

    CERN Document Server

    De Meo, P; Terracina, G; Ursino, D

    2009-01-01

    In this paper we propose an XML-based multi-agent recommender system for supporting online recruitment services. Our system is characterized by the following features: {\\em (i)} it handles user profiles for personalizing the job search over the Internet; {\\em (ii)} it is based on the Intelligent Agent Technology; {\\em (iii)} it uses XML for guaranteeing a light, versatile and standard mechanism for information representation, storing and exchange. The paper discusses the basic features of the proposed system, presents the results of an experimental study we have carried out for evaluating its performance, and makes a comparison between the proposed system and other e-recruitment systems already presented in the past.

  3. Patientsmate©: the implementation and evaluation of an online prospective audit system.

    LENUS (Irish Health Repository)

    McHugh, Seamus Mark

    2010-11-18

    Introduction  Inaccuracy in Hospital Inpatient Enquiry (HIPE)\\/Casemix-based data has been reported as high as 26%. This results in financial waste and makes effective audit impossible. We aimed to develop a novel web-based outcome audit system. Methods  A web-based online audit system, Patientsmate©, was developed using an integrated database system written in the programme language PHP. Data were inputted by the surgical team responsible for the patients care. A prospective comparison study of the new Patientsmate© and the standard HIPE systems, was performed over a 1-month period and involving two general surgical teams in April 2010. In addition, a Likert-scale based questionnaire was designed and hosted within the Patientsmate© system. A focus group of those clinicians directly involved in data accessing and input were then invited to complete the questionnaire in order to assess usability of the system. Results  During the study period there were a total of 108 patients and 88 procedures. Our study confirms the accuracy of clinician derived data, with the Patientsmate© system more accurately recording number of patients (83% vs. 80.6%), number of procedures (85.2% vs. 68.1%) and hospital day case rate (52% vs. 47.1%). Inputting data using Patientsmate© for a single patient took 6-7 minutes. Of those using the system, 75% reported feeling comfortable after using it once only and 100% were satisfied with the layout of the online interface. Conclusion  The Patientsmate© system allows for increased accuracy in outcome-based data as compared with the HIPE system, facilitating audit, financial savings and the appropriate allocation of services.

  4. LHCB: Non-POSIX File System for the LHCB Online Event Handling

    CERN Multimedia

    Garnier, J-C; Cherukuwada, S S

    2010-01-01

    LHCb aims to use its O(20000) CPU cores in the High Level Trigger (HLT) and its 120 TB Online storage system for data reprocessing during LHC shutdown periods. These periods can last between a few days and several weeks during the winter shutdown or even only a few hours during beam interfill gaps. These jobs run on files which are staged in from tape storage to the local storage buffer. The result are again one or more files. Efficient file writing and reading is essential for the performance of the system. Rather than using a traditional shared filesystem such as NFS or CIFS we have implemented a custom, light-weight, non-Posix file-system for the handling of these files. Streaming this filesystem for the data-access allows to obtain high performance, while at the same time keep the resource consumption low and add nice features not found in NFS such as high-availability, transparent failover of the read and write service. The writing part of this file-system is in successful use for the Online, real-time w...

  5. Offline and Online E-Voting System with Embedded Security for Real Time Application

    Directory of Open Access Journals (Sweden)

    Alaguvel.R 1 and Gnanavel.G 2

    2013-04-01

    Full Text Available In many proposals, the security of the system relies mainly on the black box voting machine. But security of data, privacy of the voters and the accuracy of the vote are also main aspects that have to be taken into consideration while building secure e-voting system. In this project the authenticating voters and polling data security aspects for e-voting systems was discussed. It ensures that vote casting cannot be altered by unauthorized person. The voter authentication in online e-voting process can be done by formal registration through administrators and by entering GSM One time password. In Offline e-voting process authentication can be done using facial recognization, finger vein sensing and RFID (smart cards which enables the electronic ballot reset for allowing voters to cast their votes. Also the voted data and voters details can be sent to the nearby Database Administration unit in a timely manner using GSM System with cryptography technique

  6. Online Energy Management Systems for Microgrids: Experimental Validation and Assessment Framework

    DEFF Research Database (Denmark)

    Hernández, Adriana Carolina Luna; Meng, Lexuan; Aldana, Nelson Leonardo Diaz

    2017-01-01

    operating costs and load disconnections. The whole energy management system has been tested experimentally in a test bench under both grid-connected and islanded mode. Also, its performance has been proved considering severe mismatches in forecast generation and load. Several experimental results have......Microgrids are energy systems that can work independently from the main grid in a stable and self-sustainable way. They rely on energy management systems to schedule optimally the distributed energy resources. Conventionally, the main research in this field is focused on scheduling problems...... applicable for specific case studies rather than in generic architectures that can deal with the uncertainties of the renewable energy sources. This paper contributes a design and experimental validation of an adaptable energy management system implemented in an online scheme, as well as an evaluation...

  7. A new online exhaust gas monitoring system in hydrochloric acid regeneration of cold rolling mills.

    Science.gov (United States)

    Tuo, Long; Zheng, Xiang; Chen, Xiong

    2015-07-07

    Measuring the content of hydrogen chloride (HCl) in exhaust gas used to take time and energy. In this paper, we introduce a new online monitoring system which can output real-time data to the monitoring center. The system samples and cools exhaust gas, and after a series of processing, it will be analyzed by a specific instrument. The core part of this system is remote terminal unit (RTU) which is designed on Cortex-A8 embedded architecture. RTU runs a scaled-down version of Linux which is a good choice of OS for embedded applications. It controls the whole processes, does data acquisition and data analysis, and communicates with monitoring center through Ethernet. In addition, through a software developed for windows, the monitoring process can be remotely controlled. The new system is quite beneficial for steel industry to do environment monitoring.

  8. Purpose-restricted Anonymous Mobile Communications Using Anonymous Signatures in Online Credential Systems

    DEFF Research Database (Denmark)

    Fathi, Hanane; Shin, SeongHan; Kobara, Kazukuni

    2010-01-01

    To avoid the risk of long-term storage of secrets on a portable device, an online credential system supports the roaming user in retrieving securely at various locations his private key and other material to generate anonymous signatures. The protocol proposed here allows a roaming mobile user...... to access anonymously services such as whistle blowing and net-counselling. Our approach: (1) allows a mobile user, remembering a short password, to anonymously and securely retrieve the credentials necessary for his anonymous communication without assuming a pre-established anonymous channel...

  9. State-of-the-art steam generator on-line chemistry monitoring system

    Energy Technology Data Exchange (ETDEWEB)

    Mac Koul, L.J.; Mc Clendon, M.E.; Richards, J.E.; Wozniak, S.M.

    1986-04-01

    Recent understanding of corrosion mechanisms has changed the industry's approach to one of establishing and maintaining proper water chemistry conditions to increase steam generator life and availability. A rigorous sampling and analysis program, along with management's commitment to proper water chemistry, are integral to the success of this approach. This paper describes Virginia Power's recent commitment to better maintenance of secondary side water chemistry conditions at its nuclear power stations through an on-line, comprehensive, state-of-the-art chemistry monitoring system.

  10. Utilization of on-line corrosion monitoring in the flue gas cleaning system

    DEFF Research Database (Denmark)

    Montgomery, Melanie; Nielsen, Lars V.; Petersen, Michael B.

    2015-01-01

    such as HCl, KCl or chlorine containing corrosion products. Without knowing when corrosion occurs, it is difficult to take reasonable measures to reduce corrosion. In order to gain an improved understanding of the corrosion problem, an on-line corrosion measurement system was established before the booster....... A root cause analysis concluded that corrosion occurred due to corrosion products/deposit formed during operation; however it was unclear whether the majority of corrosion occurred during operation or downtime. In both cases the chlorine content in the flue gas results in the presence of chlorine species...

  11. On-line welding quality inspection system for steel pipe based on machine vision

    Science.gov (United States)

    Yang, Yang

    2017-05-01

    In recent years, high frequency welding has been widely used in production because of its advantages of simplicity, reliability and high quality. In the production process, how to effectively control the weld penetration welding, ensure full penetration, weld uniform, so as to ensure the welding quality is to solve the problem of the present stage, it is an important research field in the field of welding technology. In this paper, based on the study of some methods of welding inspection, a set of on-line welding quality inspection system based on machine vision is designed.

  12. On-line corrosion monitoring in geothermal district heating systems. I. General corrosion rates

    DEFF Research Database (Denmark)

    Richter, S.; Hilbert, Lisbeth Rischel; Thorarinsdottir, R.I.

    2006-01-01

    General corrosion rates in the geothermal district heating systems in Iceland are generally low, of the magnitude 1 mu m/y. The reason is high pH (9.5), low-conductivity (200 mu m/y) and negligible dissolved oxygen. The geothermal hot water is either used directly from source or to heat up cold...... ground water. The fluid naturally contains sulphide, which helps keeping the fluid oxygen-free but complicates the electrochemical environment. In this research on-line techniques for corrosion monitoring were tested and evaluated in this medium. Electrochemical methods worked well as long as frequency...

  13. Association Between Patient Value Systems and Physician and Practice Attributes Available Online.

    Science.gov (United States)

    Welshhans, Jamie L; Harmon, Jeffrey J; Papel, Ira; Gentile, Richard; Mangat, Devinder; Byrne, Patrick; Collar, Ryan M

    2017-08-31

    The relative value of facial plastic surgeon personal and practice attributes is relevant to the broader health care system because of increasing out-of-pocket expenses to patients. To determine the relative value of specific facial plastic surgeon personal and practice attributes available online from the perspective of patients. This study consisted of an electronic survey sent to patients by email using choice-based conjoint analysis; surveys were sent between December 2015 and March 2016. Participants had agreed to join email registries to be sent email surveys and promotions at 3 private facial plastic and reconstructive surgery practices. The following surgeon personal and practice attributes and levels were compared: (1) outcome transparency (above average, average, not available); (2) surgical training affiliations (US News and World Reports rankings); (3) online rating site scores (2 [poor], 3, or 4 [excellent] stars); and (4) price ($1×, $2×, and $3× [× = $1500; average cost was set at $2×]). The relative importance of outcome transparency, surgical training affiliations, online rating scores, and price to prospective patients. Overall, 291 patients participated for a completion rate of 68%. Outcome transparency was the most valued attribute (attribute utility range = 141; attribute importance = 35.2%). Price was the least valued attribute (attribute utility range = 58.59; attribute importance = 15.1%). Assuming top-tier affiliations and 4-star ratings, share of market (SOM) was 75.5% for surgeons with above-average outcome transparency priced at $3× compared with those surgeons with no outcomes available priced at $1×. Holding price constant at $2×, surgeons with middle-tier affiliations and 2-star online ratings but above average outcomes achieved 48.4% SOM when compared with those surgeons with top-tier affiliations and 4-star online ratings without available outcomes. Facial plastic surgery patients most value surgeons who

  14. Choosing CPUs in an Open Market: System Performance Testing for the BaBar Online Farm

    Energy Technology Data Exchange (ETDEWEB)

    Pavel, Tomas J

    1998-11-17

    BABAR is a high-rate experiment to study CP violation in asymmetric e{sup +}e{sup {minus}} collisions. The BABAR Online Farm is a pool of workstations responsible for the last layer of event selection, as well as for full reconstruction of selected events and for monitoring functions. A large number of machine architectures were evaluated for use in this Online Farm. We present an overview of the results of this evaluation, which include tests of low-level OS primitives, tests of memory architecture, and tests of application-specific CPU performance. Factors of general interest to others making hardware decisions are highlighted. Performance of current BABAR reconstruction (written in C++) is found to scale fairly well with SPECint95, but with some noticeable deviations. Even for machines with similar SPEC CPU ratings, large variations in memory system performance exist. No single operating system has an overall edge in the performance of its primitives. In particular, freeware operating systems perform no worse overall than the commercial offerings.

  15. On Designing Multicore-Aware Simulators for Systems Biology Endowed with OnLine Statistics

    Directory of Open Access Journals (Sweden)

    Marco Aldinucci

    2014-01-01

    Full Text Available The paper arguments are on enabling methodologies for the design of a fully parallel, online, interactive tool aiming to support the bioinformatics scientists .In particular, the features of these methodologies, supported by the FastFlow parallel programming framework, are shown on a simulation tool to perform the modeling, the tuning, and the sensitivity analysis of stochastic biological models. A stochastic simulation needs thousands of independent simulation trajectories turning into big data that should be analysed by statistic and data mining tools. In the considered approach the two stages are pipelined in such a way that the simulation stage streams out the partial results of all simulation trajectories to the analysis stage that immediately produces a partial result. The simulation-analysis workflow is validated for performance and effectiveness of the online analysis in capturing biological systems behavior on a multicore platform and representative proof-of-concept biological systems. The exploited methodologies include pattern-based parallel programming and data streaming that provide key features to the software designers such as performance portability and efficient in-memory (big data management and movement. Two paradigmatic classes of biological systems exhibiting multistable and oscillatory behavior are used as a testbed.

  16. On designing multicore-aware simulators for systems biology endowed with OnLine statistics.

    Science.gov (United States)

    Aldinucci, Marco; Calcagno, Cristina; Coppo, Mario; Damiani, Ferruccio; Drocco, Maurizio; Sciacca, Eva; Spinella, Salvatore; Torquati, Massimo; Troina, Angelo

    2014-01-01

    The paper arguments are on enabling methodologies for the design of a fully parallel, online, interactive tool aiming to support the bioinformatics scientists .In particular, the features of these methodologies, supported by the FastFlow parallel programming framework, are shown on a simulation tool to perform the modeling, the tuning, and the sensitivity analysis of stochastic biological models. A stochastic simulation needs thousands of independent simulation trajectories turning into big data that should be analysed by statistic and data mining tools. In the considered approach the two stages are pipelined in such a way that the simulation stage streams out the partial results of all simulation trajectories to the analysis stage that immediately produces a partial result. The simulation-analysis workflow is validated for performance and effectiveness of the online analysis in capturing biological systems behavior on a multicore platform and representative proof-of-concept biological systems. The exploited methodologies include pattern-based parallel programming and data streaming that provide key features to the software designers such as performance portability and efficient in-memory (big) data management and movement. Two paradigmatic classes of biological systems exhibiting multistable and oscillatory behavior are used as a testbed.

  17. Online impedance matching system for ICRH-RF experiments on SST-1 tokamak

    Energy Technology Data Exchange (ETDEWEB)

    Joshi, R.; Singh, M.; Jadav, H.M.; Mishra, K.; Singh, Raj; Kulkarni, S.V.; Bora, D.

    2015-11-15

    High-power radio frequency (RF) heating system in the frequency range of ion cyclotron range of frequencies (ICRF) on tokamak needs a mechanism for matching impedance seen by the antenna in presence of plasma to the generator output impedance for maximum transfer of RF power to the plasma with minimum reflections to avoid damage to the generator. The impedance of the antenna is strongly dependent on edge plasma parameters and the impedance sometimes changes as fast as 10{sup −4} s, while the RF generators used can deliver full power only into constant load impedance. Hence, the matching system with dynamic response in between generator and antenna is very much essential for high power ICRF experiments when the plasma is of longer duration with variable load impedance. For ICRF system on SST-1 tokamak, two automatic matching systems are employed each for one transmission line, which consists of motorized stub tuners and phase shifters to match the antenna impedance in the time scale of 120 ms. As a part of initial testing, online impedance matching system is tested with individual transmission lines and then both the lines are matched simultaneously on a variable dummy load which simulates the plasma load. In order to deliver power to both the lines from a single RF generator, hybrid coupler is used which also protects RF generator from reflections up to certain extent. However for hybrid coupler has to work properly and both the lines should see same load impedance. The automatic matching system is installed on tokamak state super-conducting tokamak (SST-1) and is tested up to 140 kW power in the vacuum vessel of the tokamak. Here we present the details of the online matching system and its testing results. The significant result is that we could match the variable load impedance with the generator impedance within 120 ms by suitably adjusting the step counts of the motor controller.

  18. Development of a Probabilistic Technique for On-line Parameter and State Estimation in Non-linear Dynamic Systems

    Energy Technology Data Exchange (ETDEWEB)

    Tunc Aldemir; Don W. Miller; Brian k. Hajek; Peng Wang

    2002-04-01

    The DSD (Dynamic System Doctor) is a system-independent, interactive software under development for on-line state/parameter estimation in dynamic systems (1), partially supported through a Nuclear Engineering Education (NEER) grant during 1998-2001. This paper summarizes the recent accomplishments in improving the user-friendliness and computational capability of DSD

  19. ON-LINE PLATFORM FOR COMPETENCES DEVELOPMENT IN CORPORATE EDUCATIONAL SYSTEMS

    Directory of Open Access Journals (Sweden)

    L. G. Andreeva

    2016-01-01

    Full Text Available The aim of the study is to present the model of interaction of university and business corporations in uniform information and educational space, which consists of the uniform requirements to the contents and quality of education and requirements of science; education and business are equally satisfied.Methods. The methods involve summing up the results of the national and international researchers’ findings on the problem of vocational pedagogical education; methods of expert survey and system analysis.Results. The information research results disclosing the drawbacks of the existing online-education technologies are presented. There is also a presentation of online-platform concept «The University of the 3rd Millennium» where modern university is considered as a service provider responsible for corporate education. Outsourcing will allow the companies to cut their expenses on employee education programs, while universities will accumulate additional resources by means of developing and selling innovative educational products. The additional funds will enable the university to carry out scientific research, to effectively implement post graduates’ employment programs, to introduce innovations.Scientific novelty. The authors define «as is» competences, which the university must have to launch this online-platform project, and «as to be» competences, which every university is to master to successfully implement the project. Internal high-risk systemic tensions and external challenges facing the platform are defined; strategic matrix of their intersection is developed. The latter allowed the authors to specify essential tasks which demand solution within the project. There is also a description of interconnection of the defined tasks with the «as to be» competences, and a Canvas model of the suggested online platform.Practical significance: The authors of the article propose the model of business and education interaction, within which

  20. Mark Online, a Full Scale GIS-based Danish Farm Management Information System

    Directory of Open Access Journals (Sweden)

    Jens Bligaard

    2015-01-01

    Full Text Available With its oceanic climate with moderate summers and mild winters in combination with a highly organized infrastructure, farming has traditionally been very intensive in Denmark. The cultivated land constitutes 26,000 km² out of a total of 43,000 km². Most of the arable land is used for intensive plant production with a high level of mechanization and management practices. For more than three decades The Knowledge Centre for Agriculture (KCA has developed and implemented ICT Farm Management Information Systems (FMIS for planning and documentation of all aspects of crop production. Today, updated field specific information on field size, soil type, crops, varieties, soil tillage, sowing, fertilization, pesticide usage etc. is now hosted in the GIS-based FMIS, Mark Online covering more than 80% of the arable land. A centralized Microsoft SQL data base forms the core base for all the information. Based on a MS .NET framework a number of multi-tier client-server applications have been developed. Most of the desk top applications consist of relative thick clients based on Win forms, whereas HTML5 apps and Android/IOS native apps are used for the mobile platform. Data exchange between the clients and server are based on a web service layer using data compression to improve performance. Farmers are one of the two primary target groups. Local agricultural advisors working on behalf of farmers not having their own software is the other primary target group. Nonetheless, both groups are mainly focusing on field record planning, decision making and documentation. Data is transferred between the Mark Online system and the authorities by XML-based web services or ordinary file upload to official websites. The Open Geospatial Consortium’s Web Feature Service (WFS provides another interface allowing requests for geospatial features, which is used between Mark Online and external GIS.

  1. General Purpose Data-Driven Online System Health Monitoring with Applications to Space Operations

    Science.gov (United States)

    Iverson, David L.; Spirkovska, Lilly; Schwabacher, Mark

    2010-01-01

    Modern space transportation and ground support system designs are becoming increasingly sophisticated and complex. Determining the health state of these systems using traditional parameter limit checking, or model-based or rule-based methods is becoming more difficult as the number of sensors and component interactions grows. Data-driven monitoring techniques have been developed to address these issues by analyzing system operations data to automatically characterize normal system behavior. System health can be monitored by comparing real-time operating data with these nominal characterizations, providing detection of anomalous data signatures indicative of system faults, failures, or precursors of significant failures. The Inductive Monitoring System (IMS) is a general purpose, data-driven system health monitoring software tool that has been successfully applied to several aerospace applications and is under evaluation for anomaly detection in vehicle and ground equipment for next generation launch systems. After an introduction to IMS application development, we discuss these NASA online monitoring applications, including the integration of IMS with complementary model-based and rule-based methods. Although the examples presented in this paper are from space operations applications, IMS is a general-purpose health-monitoring tool that is also applicable to power generation and transmission system monitoring.

  2. Vehicle dynamic prediction systems with on-line identification of vehicle parameters and road conditions.

    Science.gov (United States)

    Hsu, Ling-Yuan; Chen, Tsung-Lin

    2012-01-01

    This paper presents a vehicle dynamics prediction system, which consists of a sensor fusion system and a vehicle parameter identification system. This sensor fusion system can obtain the six degree-of-freedom vehicle dynamics and two road angles without using a vehicle model. The vehicle parameter identification system uses the vehicle dynamics from the sensor fusion system to identify ten vehicle parameters in real time, including vehicle mass, moment of inertial, and road friction coefficients. With above two systems, the future vehicle dynamics is predicted by using a vehicle dynamics model, obtained from the parameter identification system, to propagate with time the current vehicle state values, obtained from the sensor fusion system. Comparing with most existing literatures in this field, the proposed approach improves the prediction accuracy both by incorporating more vehicle dynamics to the prediction system and by on-line identification to minimize the vehicle modeling errors. Simulation results show that the proposed method successfully predicts the vehicle dynamics in a left-hand turn event and a rollover event. The prediction inaccuracy is 0.51% in a left-hand turn event and 27.3% in a rollover event.

  3. One to One Recommendation System in Apparel On-Line Shopping

    Science.gov (United States)

    Sekozawa, Teruji; Mitsuhashi, Hiroyuki; Ozawa, Yukio

    We propose an apparel online shopping site that the fashion adviser exists on the internet. The fashion adviser, who has detailed knowledge about the fashion in real shop, selects and coordinates the clothes of the customer's preference. However, the customer, who didn't have detailed knowledge about the fashion, was not able to choose the clothes suitable for the customer's preference from among the candidate of a large amount of clothes on a conventional apparel shopping site. Then, we compose the system that analyzes the customer's preference by the AHP technique, makes to the cluster by the correlation of clothes, and analyzes the market basket. As a result, this system can coordinate the clothes appropriate for the favor of an individual customer. Moreover, this system can propose the recommendation of other clothes based on past sales data.

  4. A Benefit Measurement Framework for an Online Contract Change Management System

    Institute of Scientific and Technical Information of China (English)

    Ming Sun; Tejas Oza

    2008-01-01

    The contract change management (CCM) system is an online collaboration tool, which supports the contract change management process of new engineering contract (NEC) contract. It is currently used in practice on a wide range of civil, power, and building projects in the UK. The aim of this study is first to iden-tify the tangible and intangible benefits of the system through a user survey; then to develop a framework to measure these benefits. A questionnaire survey is conducted, which reveals that CCM can help project teams improve process effectiveness, reduce risk of process failures, and increase the compliance with NEC requirements. Subsequently, a spreadsheet tool is developed to allow CCM users to calculate the tan-gible cost savings as a result of using the system. For intangible benefits, a change management maturity model (CM3) is developed, which provides a measurement framework for assessing the improvement of a project team's capability in dealing with contract changes.

  5. Novel microfluidic system for online monitoring of biofilm dynamics by electrical impedance spectroscopy and amperometry

    Science.gov (United States)

    Bruchmann, Julia; Sachsenheimer, Kai; Schwartz, Thomas; Rapp, Bastian E.

    2016-03-01

    Biofilm formation is ubiquitous in nature where microorganisms attach to surfaces and form highly adapted and protected communities. In technical and industrial systems like drinking water supply, food production or shipping industry biofilms are a major cause of product contamination, biofouling, and biocorrosion. Therefore, understanding of biofilm formation and means of preventing biofilm formation is important to develop novel biofilm treatment strategies. A system allowing directly online detection and monitoring biofilm formation is necessary. However, until today, there are little to none technical systems featuring a non-destructive real-time characterization of biofilm formation in a highthroughput manner. This paper presents such a microfluidic system based on electrical impedance spectroscopy (EIS) and amperomertic current measurement. The sensor consists of four modules, each housing 24 independent electrodes within 12 microfluidic channels. Attached biomass on the electrodes is monitored as increased inhibition in charge transfer by EIS and a change in metabolic activity is measured as change in produced electric current by amperometry. This modular sensor system is highly adaptable and suitable for a broad range of microbiological applications. Among others, biofilm formation processes can be characterized online, biofilm manipulation like inactivation or destabilization can be monitored in real-time and gene expression can be analyzed in parallel. The use of different electrode designs allows effective biofilm studies during all biofilm phases. The whole system was recently extended by an integrated pneumatic microfluidic pump which enables easy handling procedures. Further developments of this pumping module will allow a fully- automated computer-controlled valving and pumping.

  6. Re-Examining the Way We Teach: The Earth System Science Education Alliance Online Courses

    Science.gov (United States)

    Botti, J. A.; Myers, R. J.

    2003-12-01

    Science education reform has skyrocketed over the last decade thanks in large part to the technology of the Internet, opening up dynamic new online communities of learners. It has allowed educators worldwide to share thoughts about Earth system science and reexamine the way science is taught. The Earth System Science Education Alliance (ESSEA) is one positive offshoot of this reform effort. This developing partnership among universities, colleges, and science education organizations is led by the Institute for Global Environmental Strategies and the Center for Educational TechnologiesTM at Wheeling Jesuit University. ESSEA's mission is to improve Earth system science education. ESSEA has developed three Earth system science courses for K-12 teachers. These online courses guide teachers into collaborative, student-centered science education experiences. Not only do these courses support teachers' professional development, they also help teachers implement Earth systems science content and age-appropriate pedagogical methods into their classrooms. The ESSEA semester-long courses are open to elementary, middle school, and high school educators. After three weeks of introductory content, teachers develop content and pedagogical and technological knowledge in four three-week learning cycles. The elementary school course focuses on basic Earth system interactions between land, life, air, and water. The middle school course stresses the effects of real-world events-volcanic eruptions, hurricanes, rainforest destruction-on Earth's lithosphere, atmosphere, biosphere, and hydrosphere, using "jigsaw" to study the interactions between events, spheres, and positive and negative feedback loops. The high school course uses problem-based learning to examine critical areas of global change, such as coral reef degradation, ozone depletion, and climate change. This ESSEA presentation provides examples of learning environments from each of the three courses.

  7. STAR Online Framework: from Metadata Collection to Event Analysis and System Control

    Science.gov (United States)

    Arkhipkin, D.; Lauret, J.

    2015-05-01

    In preparation for the new era of RHIC running (RHIC-II upgrades and possibly, the eRHIC era), the STAR experiment is expanding its modular Message Interface and Reliable Architecture framework (MIRA). MIRA allowed STAR to integrate meta-data collection, monitoring, and online QA components in a very agile and efficient manner using a messaging infrastructure approach. In this paper, we briefly summarize our past achievements, provide an overview of the recent development activities focused on messaging patterns and describe our experience with the complex event processor (CEP) recently integrated into the MIRA framework. CEP was used in the recent RHIC Run 14, which provided practical use cases. Finally, we present our requirements and expectations for the planned expansion of our systems, which will allow our framework to acquire features typically associated with Detector Control Systems. Special attention is given to aspects related to latency, scalability and interoperability within heterogeneous set of services, various data and meta-data acquisition components coexisting in STAR online domain.

  8. Metrological traceability in education: A practical online system for measuring and managing middle school mathematics instruction

    Science.gov (United States)

    Torres Irribarra, D.; Freund, R.; Fisher, W.; Wilson, M.

    2015-02-01

    Computer-based, online assessments modelled, designed, and evaluated for adaptively administered invariant measurement are uniquely suited to defining and maintaining traceability to standardized units in education. An assessment of this kind is embedded in the Assessing Data Modeling and Statistical Reasoning (ADM) middle school mathematics curriculum. Diagnostic information about middle school students' learning of statistics and modeling is provided via computer-based formative assessments for seven constructs that comprise a learning progression for statistics and modeling from late elementary through the middle school grades. The seven constructs are: Data Display, Meta-Representational Competence, Conceptions of Statistics, Chance, Modeling Variability, Theory of Measurement, and Informal Inference. The end product is a web-delivered system built with Ruby on Rails for use by curriculum development teams working with classroom teachers in designing, developing, and delivering formative assessments. The online accessible system allows teachers to accurately diagnose students' unique comprehension and learning needs in a common language of real-time assessment, logging, analysis, feedback, and reporting.

  9. Research on Quality Inspection and Sorting On-line System for Bearing Steel Ball

    Directory of Open Access Journals (Sweden)

    Yu Runxiang

    2015-01-01

    Full Text Available To detect the flaws of bearing steel ball and sort its quality on-line, a kind of online quality detecting and sorting system for bearing steel ball is developed, which based on the eddy current inspection theory. The design of scheme, circuit and mechanical structure of the system is described in detail. PSD(Phase Sensitive Detection is applied to pick up the signal of cracks and restrain interferential signal. The flaws will be quantificational analysed based on the X-R orthogonal decomposition technology which include the size and depth information of flaws. By analysing and processing the amplitude and phase of the defect signal, the flaws can be found with high accuracy and low error-detected ratio. ARM and MCU Processor ensures the real-time ability of discriminating algorithm. The CPLD is used for generating reference signal which can be easy to get synchronous with the source signal. It has good properties of real-time to detect the quality of bearing steel ball.

  10. Risk factors for radiotherapy incidents and impact of an online electronic reporting system.

    Science.gov (United States)

    Chang, David W; Cheetham, Lynn; te Marvelde, Luc; Bressel, Mathias; Kron, Tomas; Gill, Suki; Tai, Keen Hun; Ball, David; Rose, William; Silva, Linas; Foroudi, Farshad

    2014-08-01

    To ascertain the rate, type, significance, trends and the potential risk factors associated with radiotherapy incidents in a large academic department. Data for all radiotherapy activities from July 2001 to January 2011 were reviewed from radiotherapy incident reporting forms. Patient and treatment data were obtained from the radiotherapy record and verification database (MOSAIQ) and the patient database (HOSPRO). Logistic regression analyses were performed to determine variables associated with radiotherapy incidents. In that time, 65,376 courses of radiotherapy were delivered with a reported incident rate of 2.64 per 100 courses. The rate of incidents per course increased (1.96 per 100 courses to 3.52 per 100 courses, p5% deviation in dose (10.50 to 2.75%, p<0.001) had decreased after the introduction of an online electronic reporting system. The following variables were associated with an increased rate of incidents: afternoon treatment time, paediatric patients, males, inpatients, palliative plans, head-and-neck, skin, sarcoma and haematological malignancies. In general, complex plans were associated with higher incidence rates. Radiotherapy incidents were infrequent and most did not result in significant dose deviation. A number of risk factors were identified and these could be used to highlight high-risk cases in the future. Introduction of an online electronic reporting system resulted in a significant increase in the number of incidents being reported. Copyright © 2014 Elsevier Ireland Ltd. All rights reserved.

  11. On-Line Model-Based System For Nuclear Plant Monitoring

    Science.gov (United States)

    Tsoukalas, Lefteri H.; Lee, G. W.; Ragheb, Magdi; McDonough, T.; Niziolek, F.; Parker, M.

    1989-03-01

    A prototypical on-line model-based system, LASALLE1, developed at the University of Illinois in collaboration with the Illinois Department of Nuclear Safety (IDNS) is described. Its main purpose is to interpret about 300 signals, updated every two minutes at IDNS from the LaSalle Nuclear Power Plant, and to diagnose possible abnormal conditions. It is written in VAX/VMS OPS5 and operates on both the on-line and testing modes. In its knowledge base, operator and plant actions pertaining to the Emergency Operating Procedure(EOP) A-01, are encoded. This is a procedure driven by a reactor's coolant level and pressure signals; with the purpose of shutting down the reactor, maintaining adequate core cooling and reducing the reactor pressure and temperature to cold shutdown conditions ( about 90 to 200 °F). The monitoring of the procedure is performed from the perspective of Emergency Preparedness. Two major issues are addressed in this system. First, the management of the short-term or working memory of the system. LASALLE1 must reach its inferences, display its conclusion and update a message file every two minutes before a new set of data arrives from the plant. This was achieved by superimposing additional layers of control over the inferencing strategies inherent in OPS5, and developing special rules for the management of the used or outdated information. The second issue is the representation of information and its uncertainty. The concepts of information granularity and performance-level, which are based on a coupling of Probability Theory and the theory of Fuzzy Sets, are used for this purpose. The estimation of the performance-level incorporates a mathematical methodology which accounts for two types of uncertainty encountered in monitoring physical systems: Random uncertainty, in the form of of probability density functions generated by observations, measurements and sensors data and fuzzy uncertainty represented by membership functions based on symbolic

  12. Determinants of online buyer trust. A comparison with the auction system

    National Research Council Canada - National Science Library

    Sonia San Martín Gutiérrez; Carmen Camarero Izquierdo

    2010-01-01

    .... Because of the especial characteristics of online buying, one of the most important and the most difficult challenges in the context of an online purchase as opposed to offline purchases is how...

  13. Online Design Aid for Evaluating Manure Pit Ventilation Systems to Reduce Entry Risk.

    Science.gov (United States)

    Manbeck, Harvey B; Hofstetter, Daniel W; Murphy, Dennis J; Puri, Virendra M

    2016-01-01

    On-farm manure storage pits contain both toxic and asphyxiating gases such as hydrogen sulfide, carbon dioxide, methane, and ammonia. Farmers and service personnel occasionally need to enter these pits to conduct repair and maintenance tasks. One intervention to reduce the toxic and asphyxiating gas exposure risk to farm workers when entering manure pits is manure pit ventilation. This article describes an online computational fluid dynamics-based design aid for evaluating the effectiveness of manure pit ventilation systems to reduce the concentrations of toxic and asphyxiating gases in the manure pits. This design aid, developed by a team of agricultural engineering and agricultural safety specialists at Pennsylvania State University, represents the culmination of more than a decade of research and technology development effort. The article includes a summary of the research efforts leading to the online design aid development and describes protocols for using the online design aid, including procedures for data input and for accessing design aid results. Design aid results include gas concentration decay and oxygen replenishment curves inside the manure pit and inside the barns above the manure pits, as well as animated motion pictures of individual gas concentration decay and oxygen replenishment in selected horizontal and vertical cut plots in the manure pits and barns. These results allow the user to assess (1) how long one needs to ventilate the pits to remove toxic and asphyxiating gases from the pit and barn, (2) from which portions of the barn and pit these gases are most and least readily evacuated, and (3) whether or not animals and personnel need to be removed from portions of the barn above the manure pit being ventilated.

  14. Online Design Aid for Evaluating Manure Pit Ventilation Systems to Reduce Entry Risk

    Directory of Open Access Journals (Sweden)

    Harvey B. Manbeck

    2016-05-01

    Full Text Available On-farm manure storage pits contain both toxic and asphyxiating gases such as hydrogen sulfide, carbon dioxide, methane and ammonia. Farmers and service personnel occasionally need to enter these pits to conduct repair and maintenance tasks. One intervention to reduce the toxic and asphyxiating gas exposure risk to farm workers when entering manure pits is manure pit ventilation. This article describes an online computational fluid dynamics based design aid for evaluating the effectiveness of manure pit ventilation systems to reduce the concentrations of toxic and asphyxiating gases in the manure pits. This design aid, developed by a team of agricultural engineering and agricultural safety specialists at Pennsylvania State University, represents the culmination of more than a decade of research and technology development effort. The article includes a summary of the research efforts leading to the online design aid development and describes protocols for using the online design aid, including procedures for data input and for accessing design aid results. Design aid results include gas concentration decay and oxygen replenishment curves inside the manure pit and inside the barns above the manure pits, as well as animated motion pictures of individual gas concentration decay and oxygen replenishment in selected horizontal and vertical cut plots in the manure pits and barns. These results allow the user to assess: (1 how long one needs to ventilate the pits to remove toxic and asphyxiating gases from the pit and barn, (2 from which portions of the barn and pit these gases are most and least readily evacuated, and (3 whether or not animals and personnel need to be removed from portions of the barn above the manure pit being ventilated.

  15. Design and application of radiation apparatus for sup 6 sup 0 Co cargo train on-line inspection system

    CERN Document Server

    Wu Zhi Fang; Zhang Yuai

    2002-01-01

    Based on the special requirement for radiation apparatus of sup 6 sup 0 Co cargo train on-line inspection system, a radiation apparatus including two-level shutter, working container, storing container and electromagnetism are designed. The makeup, working mode and functional realization of the radiation apparatus are introduced. The system is used in Manzhouli customs cargo train on-line inspection system. The practice shows that the radiation apparatus is reliable to work steadily and the operating speed of the main shutter can reach 0.1 s open and 0.15 s close

  16. Development of FIA-enzyme systems for on-line monitoring of starch, cellulose and amygdalin concentrations

    Energy Technology Data Exchange (ETDEWEB)

    Umoh, E.

    1993-07-02

    Immobilized enzyme - FIA systems were developed for application in monitoring starch concentration during fermentation, cellulose concentration in hydrolysis process and amygdalin concentration in industrial effluents as an index of toxic potentiality of such effluents. The starch measuring system consisting of glucoamylase, glucose oxidase and mutarotase was employed to measure glucose and starch simultaneously. The system was used for on-line monitoring of starch concentration in a 24 hour Bacillus lichenifonnis fermentation and dextrin concentration in a 140 hour fermentation of Cephalosporium acremonium. The on-line measurements agree well with the concentrations determined off-line using both calorimetric and enzymatic methods. (orig.)

  17. Study on an On-line Measurement System of Corrosion Rate by Linear Polarization Resistance

    Energy Technology Data Exchange (ETDEWEB)

    Moon, Jeon Soo; Lee, Jae Kun; Lee, Jae Bong; Park, Pyl Yang [Korea Electric Power Research Institute, Daejeon (Korea, Republic of)

    2012-04-15

    The linear polarization resistance method is one of the widely used techniques for the corrosion rate monitoring in the water circulating systems of plants. The measurement is simple and rapid, so that a continuous on-line monitoring is possible without any shutdown of plants. A 2-electrode polarization corrosion rate measurement system was installed in a laboratory using a data acquisition board and PC. The signal processing parameters were optimized for the accurate corrosion rate measurement, and the polarization resistance was compensated with the solution resistance measured by the high frequency sine wave signal of an output channel. The precision of corrosion rate data was greatly improved by removing the initial noise signals on measuring the polarization resistance.

  18. Power system low frequency oscillation monitoring and analysis based on multi-signal online identification

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    The advance in the wide-area measurement system (WAMS) is driving the power system to the trend of wide-area monitoring and control.The Prony method is usually used for low frequency oscillation online identification.However,the identified amplitude and phase information is not sufficiently used.In this paper,the amplitude is adopted to detect the occurrence of the oscillation and to obtain the mode observability of the sites.The phase is adopted to identify the oscillation generator grouping and to obtain the mode shapes.The time varying characteristics of low frequency oscillations are studied.The behaviors and the characters of low frequency oscillations are displayed by dynamic visual techniques.Demonstrations on the "11.9" low frequency oscillation of the Guizhou Power Grid substantiate the feasibility and the validation of the proposed methods.

  19. Online Monitoring System Design of Intelligent Circuit Breaker Based on DSP and ARM

    Directory of Open Access Journals (Sweden)

    Meng Song

    2014-08-01

    Full Text Available In order to accurately analyze the dynamic characteristics of the vacuum circuit breaker, a dual-core master-slave processor structure for online monitoring system based on DSP and ARM is proposed. This structure consists of host computer, lower computer and signal processing modules. The lower computer uses DSP as the core, which completes acquisition and data preprocessing of circuit breaker’s dynamic characteristics through sensors and signal conditioning circuits. The host computer uses ARM as the core which is responsible for task management, analysis, processing and displaying collected data via Ethernet. The communication between DSP and ARM is conducted by HPI. This design improves the reliability of intelligent control unit for the circuit breaker. The experiment showed that this system works steadily and accuracy.

  20. Robust on-line relay automatic tuning of PID control systems

    Science.gov (United States)

    Tan; Lee; Jiang

    2000-01-01

    In this paper, a robust on-line relay automatic tuning method for PID control systems is developed which expand on the application domain of Astrom's renowned relay autotuning method. In the proposed configuration, a relay is applied to an inner loop of a controller-stabilised process in the usual manner. Using the induced limit cycle oscillations from the closed-loop system, the controller settings may be re-tuned non-iteratively to achieve enhanced performance without disrupting closed-loop control. Two control tuning methodologies are developed -- a direct and an indirect method based on an explicit process model. Simulation examples and a real-time experiment are provided to illustrate the practical appeal and potential advantages of the proposed method over the basic one.

  1. Optoelectronic system of online measurements of unburned carbon in coal fly ash

    Science.gov (United States)

    Golas, Janusz; Jankowski, Henryk; Niewczas, Bogdan; Piechna, Janusz; Skiba, Antoni; Szkutnik, Wojciech; Szkutnik, Zdzislaw P.; Wartak, Ryszarda; Worek, Cezary

    2001-08-01

    Carbon-in-ash level is an important consideration for combustion efficiency as well as ash marketing. The optoelectronic analyzing system for on-line determination and monitoring of the u burned carbon content of ash samples is presented. The apparatus operates on the principle that carbon content is proportional to the reflectance of IR light. Ash samples are collected iso kinetically from the flue gas duct and placed in a sample tube with a flat glass bottom. The same is then exposed to a light. The reflectance intensity is used by the system's computer to determine residual carbon content from correlation curves. The sample is then air purged back to the duct or to the attached sample canister to enable laboratory check analysis. The total cycle time takes between 5 and 10 minutes. Real time result of carbon content with accuracy 0.3-0.7 percent are reported and can be used for boiler controlling.

  2. Online devices and measuring systems for the automatic control of newspaper printing

    Science.gov (United States)

    Marszalec, Elzbieta A.; Heikkila, Ismo; Juhola, Helene; Lehtonen, Tapio

    1999-09-01

    The paper reviews the state-of-the-art color measuring systems used for the control of newspaper printing. The printing process requirements are specified and different off-line and on-line color quality control systems, commercially available and under development, are evaluated. Recent market trends in newspaper printing are discussed based on the survey. The study was made on information derived from: conference proceedings (TAGA, IARIGAI, SPIE and IS&T), journals (American Printer, Applied Optics), discussions with experts (GMI, QTI, HONEYWELL, TOBIAS, GretagMacbeth), IFRA Expo'98/Quality Measuring Technologies, commercial brochures, and the Internet. On the background of this review, three different measuring principles, currently, under investigation at VTT Information Technology, are described and their applicability to newspaper printing is evaluated.

  3. The on-line electric vehicle wireless electric ground transportation systems

    CERN Document Server

    Cho, Dong

    2017-01-01

    This book details the design and technology of the on-line electric vehicle (OLEV) system and its enabling wireless power-transfer technology, the “shaped magnetic field in resonance” (SMFIR). The text shows how OLEV systems can achieve their three linked important goals: reduction of CO2 produced by ground transportation; improved energy efficiency of ground transportation; and contribution to the amelioration or prevention of climate change and global warming. SMFIR provides power to the OLEV by wireless transmission from underground cables using an alternating magnetic field and the reader learns how this is done. This cable network will in future be part of any local smart grid for energy supply and use thereby exploiting local and renewable energy generation to further its aims. In addition to the technical details involved with design and realization of a fleet of vehicles combined with extensive subsurface charging infrastructure, practical issues such as those involved with pedestrian safety are c...

  4. Online self-service processing system of ZY-3 satellite: a prospective study of image cloud services

    Science.gov (United States)

    Wang, Hongyan; Wang, Huabin; Shi, Shaoyu

    2015-12-01

    The strong demands for satellite images are increasing not only in professional fields, but also in the non-professionals. But the online map services with up-to-date satellite images can serve few demands. One challenge is how to provide online processing service, which need to handle real-time online data-intensive geospatial computation and visualization. Under the background of the development of cloud computing technology, the problem can be figured out partly. The other challenge is how to implement user-customized online processing without professional background and knowledge. An online self-service processing system of ZY-3 Satellite images is designed to implement an on-demand service mode in this paper. It will work with only some simple parameters being set up for the non-professionals without having to care about the specific processing steps. And the professionals can assemble the basic processing services to a service chain, which can work out a more complex processing and a better result. This intelligent self-service online system for satellite images processing, which is called the prototype of satellite image cloud service in this paper, is accelerated under the development of cloud computing technology and researches on data-intensive computing. To realize the goal, the service mode and framework of the online self-service processing system of ZY-3 Satellite images are figured out in this paper. The details of key technologies are also discussed, including user space virtualization management, algorithm-level parallel image processing, image service chain construction, etc. And the experimental system is built up as a prospective study of image cloud services.

  5. Development of online instructional resources for Earth system science education: An example of current practice from China

    Science.gov (United States)

    Dong, Shaochun; Xu, Shijin; Lu, Xiancai

    2009-06-01

    Educators around the world are striving to make science more accessible and relevant to students. Online instructional resources have become an integral component of tertiary science education and will continue to grow in influence and importance over the coming decades. A case study in the iterative improvement of the online instructional resources provided for first-year undergraduates taking " Introductory Earth System Science" at Nanjing University in China is presented in this paper. Online instructional resources are used to conduct a student-centered learning model in the domain of Earth system science, resulting in a sustainable online instructional framework for students and instructors. The purpose of our practice is to make Earth system science education more accessible and exciting to students, changing instruction from a largely textbook-based teacher-centered approach to a more interactive and student-centered approach, and promoting the integration of knowledge and development of deep understanding by students. Evaluation on learning performance and learning satisfaction is conducted to identify helpful components and perception based on students' learning activities. The feedbacks indicate that the use of online instructional resources has positive impacts on mitigating Earth system science education challenges, and has the potential to promote deep learning.

  6. On-line Scanned Probe Microscopy Transparently Integrated with DualBeam SEM/FIB Systems

    Science.gov (United States)

    Ignatov, Andrey; Komissar, Anatoly; Lewis, Aaron

    2013-03-01

    A multifunctional scanning probe microscope (SPM) will be described that transparently integrates with a DualBeam SEM/FIB System. This is done without perturbing any of the capabilities of the Dual Beam in terms of detectors, gas injectors, analyzers etc while allowing for a completely exposed probe tip to be imaged online even with immersion objectives at working distances as short as 4 mm. In addition, the completely free motion of the rotation axis of the stage is maintained with the probe tip at the eucentric point, this makes it possible to orient the sample in any direction on any structure The X and Y scan range of the atomic force microscopic (AFM) imaging achieves 35 microns with rough motion over 10 millimeters. This permits the SPM to tilt into position perpendicular to the SEM or FIB or under an angle for rapid and accurate placement of the probe tip at or on structures such as biopolymeric materials that are nanometric in X, Y and Z extent. Thus, not only can a structure's nanometric height be accurately profiled but this can be accomplished with the on-line excellence of SEM for X, Y metrology. Furthermore, electron and ion beam sensitive samples can be imaged and characterized by AFM at high resolution.

  7. Integration of Globus Online with the ATLAS PanDA Workload Management System

    CERN Document Server

    Contreras, C; The ATLAS collaboration; Maeno, T; Nilsson, P; Potekhin, M

    2012-01-01

    The PanDA Workload Management System is the basis for distributed production and analysis for the ATLAS experiment at the LHC. In this role, it relies on sophisticated dynamic data movement facilities developed in ATLAS. In certain scenarios, such as small research teams in ATLAS Tier-3 sites and non-ATLAS Virtual Organizations, the overhead of installation and operation of these components makes their use not very cost effective. Globus Online is an emerging new tool from the Globus Alliance, which already proved popular within the research community. It provides the users with fast and robust file transfer capabilities that can also be managed from a Web interface, and in addition to grid sites, can have individual workstations and laptops serving as data transmission endpoints. We will describe the integration of the Globus Online functionality into the PanDA suite of software, in order to give more flexibility in choosing the method of data transfer to ATLAS Tier-3 and OSG users.

  8. Online Software and DAQ system of the TOTEM experiment at the LHC

    Science.gov (United States)

    Radicioni, E.

    2010-04-01

    The TOTEM experiment at the CERN LHC is dedicated to the measurement of the Total and Elastic cross-section and to the study of Diffractive scattering. The front-end electronics of the Data Acquisition and Trigger Systems were designed having in mind the peculiar geometrical configuration, spanning the very forward regions over distances up to 220m from the interaction point, trying to unify distant and different detectors by standardizing the readout as far as possible. In addition, the fact that the TOTEM scientific program includes common measurements with CMS translates into additional requirements on both Hardware and Software. As a matter of fact, a large fraction of today's Data Acquisition procedures run as Firmare on powerful embedded FPGAs; this is the reason why TOTEM has taken the decision to include the Firmware in the standard design, testing and release procedures together with more general Online Software. In this paper we describe the full Data Acquisition chain and its Online Software, with emphasis on design issues, methodologies, expected performances and running modes.

  9. The impact of an international online accreditation system on pedagogical models and strategies in higher education

    Directory of Open Access Journals (Sweden)

    Garista Patrizia

    2015-06-01

    Full Text Available Health promotion practice is characterised by a diverse workforce drawn from a broad range of disciplines, bringing together an extensive breadth of knowledge, skills, abilities, attitudes and values stemming from biomedical and social science frameworks. One of the goals of the CompHP Project was to ensure that higher education training would not only reach competency-based standards necessary for best practice, but also facilitate mobility within the EU and beyond through the accreditation of professional practitioners and educational courses. As a result, higher education institutions in Italy and elsewhere are requested to shift the focus from the definition of learning objectives to the identification of teaching strategies and assessment measures to guarantee that students have acquired the competencies identified. This requires reflection on the pedagogical models underpinning course curricula and teaching–learning approaches in higher education, not only to meet the competency-based standards but also to incorporate overarching transversal competencies inherent to the profession and, more specifically, to the online accreditation procedure. Professionals applying for registration require competence in foreign languages, metacognition and be digitally literate. The article provides a brief overview of the development and structure of the International Union for Health Promotion and Education online accreditation system and proposes a pedagogical reflection on course curricula.

  10. Online Diagnosis System: a webserver for analysis of Sanger sequencing-based genetic testing data.

    Science.gov (United States)

    Sun, Kun; Yuen, Yuet-Ping; Wang, Huating; Sun, Hao

    2014-10-01

    Sanger sequencing is a well-established molecular technique for diagnosis of genetic diseases. In these tests, DNA sequencers produce vast amounts of data that need to be examined and annotated within a short period of time. To achieve this goal, an online bioinformatics platform that can automate the process is essential. However, to date, there is no such integrated bioinformatics platform available. To fulfill this gap, we developed the Online Diagnosis System (ODS), which is a freely available webserver and supports the commonly used file format of Sanger sequencing data. ODS seamlessly integrates base calling, single nucleotide variation (SNV) identification, and SNV annotation into one single platform. It also allows laboratorians to manually inspect the quality of the identified SNVs in the final report. ODS can significantly reduce the data analysis time therefore allows Sanger sequencing-based genetic testing to be finished in a timely manner. ODS is freely available at http://sunlab.lihs.cuhk.edu.hk/ODS/. Copyright © 2014 Elsevier Inc. All rights reserved.

  11. Integration of Globus Online with the ATLAS PanDA Workload Management System

    CERN Document Server

    Contreras, C; The ATLAS collaboration; Maeno, T; Nilsson, P; Potekhin, M

    2012-01-01

    The PanDA Workload Management System is the basis for distributed production and analysis for the ATLAS experiment at the LHC. In this role, it relies on sophisticated dynamic data movement facilities developed in ATLAS. In certain scenarios, such as small research teams in ATLAS Tier-3 sites and non-ATLAS Virtual Organizations, the overhead of installation and operation of these components makes their use not very cost effective. Globus Online is an emerging new tool from the Globus Alliance, which already proved popular within the research community. It provides the users with fast and robust file transfer capabilities that can also be managed from a Web interface, and in addition to grid sites, can have individual workstations and laptops serving as data transmission endpoints. We will describe the integration of the Globus Online functionality into the PanDA suite of software, in order to give more flexibility in choosing the method of data transfer to ATLAS Tier-3 and OSG users.

  12. Using an Online Homework System to Submit Accounting Homework: Role of Cognitive Need, Computer Efficacy, and Perception

    Science.gov (United States)

    Peng, Jacob C.

    2009-01-01

    The author investigated whether students' effort in working on homework problems was affected by their need for cognition, their perception of the system, and their computer efficacy when instructors used an online system to collect accounting homework. Results showed that individual intrinsic motivation and computer efficacy are important factors…

  13. A system for accurate on-line measurement of total gas consumption or production rates in microbioreactors

    NARCIS (Netherlands)

    van Leeuwen, Michiel; Heijnen, Joseph J.; Gardeniers, Johannes G.E.; Oudshoorn, Arthur; Noorman, Henk; Visser, Jan; van der Wielen, Luuk A.M.; van Gulik, Walter M.

    2009-01-01

    A system has been developed, based on pressure controlled gas pumping, for accurate measurement of total gas consumption or production rates in the nmol/min range, applicable for on-line monitoring of bioconversions in microbioreactors. The system was validated by carrying out a bioconversion with

  14. A system for accurate on-line measurement of total gas consumption or production rates in microbioreactors

    NARCIS (Netherlands)

    Leeuwen, van Michiel; Heijnen, Joseph J.; Gardeniers, Han; Oudshoorn, Arthur; Noorman, Henk; Visser, Jan; Wielen, van der Luuk A.M.; Gulik, van Walter M.

    2009-01-01

    A system has been developed, based on pressure controlled gas pumping, for accurate measurement of total gas consumption or production rates in the nmol/min range, applicable for on-line monitoring of bioconversions in microbioreactors. The system was validated by carrying out a bioconversion with k

  15. The Use of a Mobile Learning Management System at an Online University and Its Effect on Learning Satisfaction and Achievement

    Science.gov (United States)

    Shin, Won Sug; Kang, Minseok

    2015-01-01

    This study investigates online students' acceptance of mobile learning and its influence on learning achievement using an information system success and extended technology acceptance model (TAM). Structural equation modeling was used to test the structure of individual, social, and systemic factors influencing mobile learning's acceptance, and…

  16. 77 FR 26013 - Request for Information on Guidance for the Specification of a Secure, Online Reporting System...

    Science.gov (United States)

    2012-05-02

    ... HUMAN SERVICES Request for Information on Guidance for the Specification of a Secure, Online Reporting System for Streamlining Programmatic, Fiscal, and Other Data From DHHS-Funded HIV Prevention, Treatment... system to streamline the collection, processing, and sharing of programmatic, funding, and other...

  17. An automated on-line multidimensional HPLC system for protein and peptide mapping with integrated sample preparation

    NARCIS (Netherlands)

    Wagner, K.; Miliotis, T.; Marko-Varga, G; Bischoff, Rainer; Unger, K.K.

    2002-01-01

    A comprehensive on-line two-dimensional 2D-HPLC system with integrated sample preparation was developed for the analysis of proteins and peptides with a molecular weight below 20 kDa. The system setup provided fast separations and high resolving power and is considered to be a complementary techniqu

  18. Using an Online Homework System to Submit Accounting Homework: Role of Cognitive Need, Computer Efficacy, and Perception

    Science.gov (United States)

    Peng, Jacob C.

    2009-01-01

    The author investigated whether students' effort in working on homework problems was affected by their need for cognition, their perception of the system, and their computer efficacy when instructors used an online system to collect accounting homework. Results showed that individual intrinsic motivation and computer efficacy are important factors…

  19. High-Performance Control of Paralleled Three-Phase Inverters for Residential Microgrid Architectures Based on Online Uninterruptable Power Systems

    DEFF Research Database (Denmark)

    Zhang, Chi; Guerrero, Josep M.; Vasquez, Juan Carlos

    2015-01-01

    In this paper, a control strategy for the parallel operation of three-phase inverters forming an online uninterruptible power system (UPS) is presented. The UPS system consists of a cluster of paralleled inverters with LC filters directly connected to an AC critical bus and an AC/DC forming a DC ...

  20. 国内在线考试系统研究综述%Comprehensive Describes of Domestic Online Examination System

    Institute of Scientific and Technical Information of China (English)

    申田静; 陈俊

    2015-01-01

    在线考试系统是教育教学测评发展的一个趋势.利用中国知网数据资源库,搜集整理近十年在线考试系统相关文献,研究在线考试系统的样本源分布、研究者专业背景分布等发展数据,以期对相关学者的学习研究提供参考.%Online examination system is a trend of education evaluation development. Taking advantage of CNKI, the paper collected nearly a decade online examination system related lite-rature, researched sample Source distribution of online examination system and the researcher professional background distribution of developed data, in order to provide reference for the study and research related to academics.

  1. Developing Online Course Portal to Improve Teachers’ Competency in Creating Action Research (CAR) Proposal Using Learning Management System (LMS) Moodle

    Science.gov (United States)

    Muhtar, A. A.

    2017-02-01

    Online course can offer flexible and easy way to improve teachers’ competency in conducting education research, especially in classroom action research (CAR). Teachers can attend the course without physically present in the class. This research aims to (1) develop online course portal to improve teachers’ competency in creating CAR proposal, and (2) produce proper online course portal validated and evaluated from four aspects: learning process, content, graphic user interface and programming. Online course in this research developed using Learning Management System (LMS) Moodle. The research model is using modified Borg & Gall Research and Development (R&D) started from preliminary studies, designing product, creating product, and evaluation. Product validated by three experts from three universities. Research subjects for field test are seven teachers as participants from different schools in several provinces in Indonesia. Based on expert validation and field test results, the product developed in this research categorized as “very good” in all aspects and it is suitable for teacher to improve their competency in creating CAR proposal. Online course portal produced in this research can be used as a proper model for online learning in creating CAR proposal.

  2. Dishonest Behaviors in Online Rating Systems: Cyber Competition, Attack Models, and Attack Generator

    Institute of Scientific and Technical Information of China (English)

    Ya-Fei Yang; Qin-Yuan Feng; Yen(Lindsay)Sun; Ya-Fei Dai

    2009-01-01

    Recently,online rating systems are gaining popularity.Dealing with unfair ratings in such systems has been recognized as an important but challenging problem.Many unfair rating detection approaches have been developed and evaluated against simple attack models.However,the lack of unfair rating data from real human users and realistic attack behavior models has become an obstacle toward developing reliable rating systems.To solve this problem,we design and launch a rating challenge to coHect anfair rating data from real human users.In order to broaden the scope of the data collection,we also develop a comprehensive signal-based unfair rating detection system.Based on the analysis of real attack data,we discover important features in unfair ratings,build attack models,and develop an unfair rating generator.The models and generator developed in this paper can be directly used to test current rating aggregation systems,as well as to assist the design of future rating systems.

  3. Radiation Effects on the On-line Monitoring System of a Hadrontherapy Center

    Directory of Open Access Journals (Sweden)

    Abdolkazem Ansarinejad

    2014-11-01

    Full Text Available Introduction Today, there is a growing interest in the use of hadrontherapy as an advanced radiotherapy technique. Hadrontherapy is considered a promising tool for cancer treatment, given its high radiobiological effectiveness and high accuracy of dose deposition due to the physical properties of hadrons. However, new radiation modalities of dose delivery and on-line beam monitoring play crucial roles in a successful treatment. In hadrontherapy, through interactions between the primary beam and patient’s tissue, secondary neutrons are produced. Materials and Methods This study, by using FLUKA Monte Carlo simulations, assessed the level of secondary neutron radiation, produced during patient treatment. In addition,  the evaluation included secondary neutron radiation, which was produced while hitting the on-line detectors of beam delivery system by the Italian National Center for Hadrontherapy (CNAO. This study assessed the effects of secondary neutron radiation on an electronics rack (including a data acquisition system, a power supply, and a gas system and a nozzle, where two monitoring boxes (each one consisting of two or three parallel plate ionization chambers were installed. Results The resulting neutron energy spectra and radiation doses were used to determine the life performance and the probability of damage to these devices. Findings showed that by using carbon ions of 400 MeV/u, the fluence rate of secondary neutrons will be approximately 3.4×1010 n/cm2 in a year. Conclusion This value is lower than the experimental threshold, which is responsible for less than 1% of changes in electrical characteristics, and would cause no single event upsets.

  4. Evaluation of online accessed systems: example of qualitative research of Fast Addresses of GeaBios System

    Directory of Open Access Journals (Sweden)

    Aleš Klemen

    2006-01-01

    Full Text Available An efficient online information service user interface enables independent use of these online. Designers of the GeaBios Internet information system intended to evaluate the user-friendliness of their service »Fast adresses« (»Hitri naslovi«. In December 2003, as a research project for a graduation thesis, an evaluation of »Fast adresses« was conducted. The study consisted of 10 study participants performing assigned tasks and a survey of the same individuals. During the study research questions were developed as well as list of tasks to be assigned to the participants for the observations. Each observation was performed using a qualitative research paradigm. This paradigm was enhanced with an adaptation of Shneiderman’s (1998 questionnaire. Identified difficulties participants had in using »Fast adresses« fell into four types: (1 formulation of queries, (2 display of results, (3 the influence of the operating system, Windows, and, (4 the color and design of the display background and elements of the Web page. Results indicate that the difficulties encountered were not limited to the inappropriate design of the user interface, but also are attributable to user error.

  5. A Hybrid FPGA-Based System for EEG- and EMG-Based Online Movement Prediction

    Science.gov (United States)

    Wöhrle, Hendrik; Tabie, Marc; Kim, Su Kyoung; Kirchner, Frank; Kirchner, Elsa Andrea

    2017-01-01

    A current trend in the development of assistive devices for rehabilitation, for example exoskeletons or active orthoses, is to utilize physiological data to enhance their functionality and usability, for example by predicting the patient’s upcoming movements using electroencephalography (EEG) or electromyography (EMG). However, these modalities have different temporal properties and classification accuracies, which results in specific advantages and disadvantages. To use physiological data analysis in rehabilitation devices, the processing should be performed in real-time, guarantee close to natural movement onset support, provide high mobility, and should be performed by miniaturized systems that can be embedded into the rehabilitation device. We present a novel Field Programmable Gate Array (FPGA) -based system for real-time movement prediction using physiological data. Its parallel processing capabilities allows the combination of movement predictions based on EEG and EMG and additionally a P300 detection, which is likely evoked by instructions of the therapist. The system is evaluated in an offline and an online study with twelve healthy subjects in total. We show that it provides a high computational performance and significantly lower power consumption in comparison to a standard PC. Furthermore, despite the usage of fixed-point computations, the proposed system achieves a classification accuracy similar to systems with double precision floating-point precision. PMID:28671632

  6. Optofluidic multi-measurement system for the online monitoring of lubricant oil

    Science.gov (United States)

    Verschooten, Tom; Callewaert, Manly; Ciaccheri, Leonardo; Vervaeke, Michael; Van Erps, Jürgen; De Malsche, Wim; Grazia Mignani, Anna; Thienpont, Hugo; Ottevaere, Heidi

    2016-01-01

    We show a detection system that simultaneously allows absorbance (ABS), laser-induced fluorescence (LIF) and scattering detection excited by two different laser sources at 405 nm and 450 nm. The heart of the system consists of a mass manufacturable polymer optofluidic chip. The chip is mounted in an optical detection assembly that aligns the chip to the rest of the system, seals the chip from leakage, fixes the position and connects the channels to the rest of the fluidic system. The fluidics exhibit a reduced susceptibility to perturbations caused by air bubbles, this is accomplished by making use of a serpentine channel layout. For coumarin 480, detection limits of 100 nM and 10 pM are observed for ABS and LIF respectively. An effective detection range of 4000 down to 1 nephelometric turbidity units is shown for the detection of scattered light. The viscous behaviour of the sample is analysed by a secondary FFT processing step of which the result is further processed by multivariate data analysis. This allows the identification of samples and prediction of their quality parameters. We apply this system for the monitoring of lubricant oil, demonstrating its ability to compete with spectroscopic detection techniques. The low-cost approach and multi-measurement architecture shown in this paper pave the way for miniaturized on-line monitoring of liquids in an industrial environment.

  7. Implementation of an on-line monitoring system for transmitters in a CANDU nuclear power plant

    Science.gov (United States)

    Labbe, A.; Abdul-Nour, G.; Vaillancourt, R.; Komljenovic, D.

    2012-05-01

    Many transmitters (pressure, level and flow) are used in a nuclear power plant. It is necessary to calibrate them periodically to ensure that their measurements are accurate. These calibration tasks are time consuming and often contribute to worker radiation exposure. Human errors can also sometimes degrade their performance since the calibration involves intrusive techniques. More importantly, experience has shown that the majority of current calibration efforts are not necessary. These facts motivated the nuclear industry to develop new technologies for identifying drifting instruments. These technologies, well known as on-line monitoring (OLM) techniques, are non-intrusive and allow focusing the maintenance efforts on the instruments that really need a calibration. Although few OLM systems have been implemented in some PWR and BWR plants, these technologies are not commonly used and have not been permanently implemented in a CANDU plant. This paper presents the results of a research project that has been performed in a CANDU plant in order to validate the implementation of an OLM system. An application project, based on the ICMP algorithm developed by EPRI, has been carried out in order to evaluate the performance of an OLM system. The results demonstrated that the OLM system was able to detect the drift of an instrument in the majority of the studied cases. A feasibility study has also been completed and has demonstrated that the implementation of an OLM system at a CANDU nuclear power plant could be advantageous under certain conditions.

  8. On-line Decentralized Charging of Plug-In Electric Vehicles in Power Systems

    CERN Document Server

    Li, Qiao; Negi, Rohit; Franchetti, Franz; Ilic, Marija D

    2011-01-01

    Plug-in electric vehicles (PEV) are gaining increasing popularity in recent years, due to the growing societal awareness of reducing greenhouse gas (GHG) emissions and the dependence on foreign oil or petroleum. Large-scale implementation of PEVs in the power system currently faces many challenges. One particular concern is that the PEV charging can potentially cause significant impact on the existing power distribution system, due to the increase in peak load. As such, this work tries to mitigate the PEV charging impact by proposing a decentralized smart PEV charging algorithm to minimize the distribution system load variance, so that a 'flat' total load profile can be obtained. The charging algorithm is on-line, in that it controls the PEV charging processes in each time slot based entirely on the current power system state. Thus, compared to other forecast based smart charging approaches in the literature, the charging algorithm is robust against various uncertainties in the power system, such as random PE...

  9. Parameters estimation online for Lorenz system by a novel quantum-behaved particle swarm optimization

    Institute of Scientific and Technical Information of China (English)

    Gao Fei; Li Zhuo-Qiu; Tong Heng-Qing

    2008-01-01

    This paper proposes a novel quantum-behaved particle swarm optimization (NQPSO) for the estimation of chaos'unknown parameters by transforming them into nonlinear functions' optimization. By means of the techniques in the following three aspects: contracting the searching space self-adaptively; boundaries restriction strategy; substituting the particles' convex combination for their centre of mass, this paper achieves a quite effective search mechanism with fine equilibrium between exploitation and exploration. Details of applying the proposed method and other methods into Lorenz systems axe given, and experiments done show that NQPSO has better adaptability, dependability and robustness. It is a successful approach in unknown parameter estimation online especially in the cases with white noises.

  10. SYSTEM EXPERTISE TRAINING COURSES IN PRIVATE SECTOR: Can They Be Given Online?

    Directory of Open Access Journals (Sweden)

    Birim BALCI DEMIRCI

    2014-04-01

    Full Text Available It is widely known that there are many schools in the private sector offering courses in Computer Technology, Computer Engineering, Information Systems and similar disciplines in addition to Universities presenting such courses. The private sector programs are extremely popular with students already studying at university as well as being of great interest to previously graduated university students. The first purpose of this study is to determine the percentage of university students who attend theses education programs. Both previously graduated and presently studying students have been included. Secondly it aims to understand the reasons behind the attendance of such courses by students who are already studying a similar curriculum or have previously studied and graduated in similar and related fields. In the light of this information, some suggestions have been made about giving these courses as online.

  11. An On-Line Scheduler over Hard Real-Time Communication System

    Institute of Scientific and Technical Information of China (English)

    CHEN Hui; XIONG Guangze

    2003-01-01

    By thorough research on the prominent periodic and aperiodic scheduling algorithms, an on-line hard real-time scheduler is presented, which is applicable to the scheduling of packets over a link.This scheduler, based on both Rate Monotonic, pinwheel scheduling algorithm Sr and Polling Server scheduling algorithms, can rapidly judge the schedulability and then automatically generate a bus table for the scheduling algorithm to schedule the packets as the periodic packets. The implementation of the scheduler is simple and easy to use, and it is effective for the utilization of bus link. The orderly execution of the bus table can not only guarantee the performance of the hard real time but also avoid the blockage and interruption of the message transmission. So the scheduler perfectly meets the demand of hard realtime communication system on the field bus domain.

  12. Development of an accelerometer-linked online intervention system to promote physical activity in adolescents.

    Directory of Open Access Journals (Sweden)

    Nicole Guthrie

    Full Text Available Most adolescents do not achieve the recommended levels of moderate-to-vigorous physical activity (MVPA, placing them at increased risk for a diverse array of chronic diseases in adulthood. There is a great need for scalable and effective interventions that can increase MVPA in adolescents. Here we report the results of a measurement validation study and a preliminary proof-of-concept experiment testing the impact of Zamzee, an accelerometer-linked online intervention system that combines proximal performance feedback and incentive motivation features to promote MVPA. In a calibration study that parametrically varied levels of physical activity in 31 12-14 year-old children, the Zamzee activity meter was shown to provide a valid measure of MVPA (sensitivity in detecting MVPA = 85.9%, specificity = 97.5%, and r = .94 correspondence with the benchmark RT3 accelerometer system; all p < .0001. In a subsequent randomized controlled multi-site experiment involving 182 middle school-aged children assessed for MVPA over 6 wks, intent-to-treat analyses found that those who received access to the Zamzee intervention had average MVPA levels 54% greater than those of a passive control group (p < 0.0001 and 68% greater than those of an active control group that received access to a commercially available active videogame (p < .0001. Zamzee's effects on MVPA did not diminish significantly over the course of the 6-wk study period, and were statistically significant in both females and males, and in normal- vs. high-BMI subgroups. These results provide promising initial indications that combining the Zamzee activity meter with online proximal performance feedback and incentive motivation features can positively impact MVPA levels in adolescents.

  13. Information Technology Service Management with Cloud Computing Approach to Improve Administration System and Online Learning Performance

    Directory of Open Access Journals (Sweden)

    Wilianto Wilianto

    2015-10-01

    Full Text Available This work discusses the development of information technology service management using cloud computing approach to improve the performance of administration system and online learning at STMIK IBBI Medan, Indonesia. The network topology is modeled and simulated for system administration and online learning. The same network topology is developed in cloud computing using Amazon AWS architecture. The model is designed and modeled using Riverbed Academic Edition Modeler to obtain values of the parameters: delay, load, CPU utilization, and throughput. The simu- lation results are the following. For network topology 1, without cloud computing, the average delay is 54  ms, load 110 000 bits/s, CPU utilization 1.1%, and throughput 440  bits/s.  With  cloud  computing,  the  average  delay  is 45 ms,  load  2 800  bits/s,  CPU  utilization  0.03%,  and throughput 540 bits/s. For network topology 2, without cloud computing, the average delay is 39  ms, load 3 500 bits/s, CPU utilization 0.02%, and throughput database server 1 400 bits/s. With cloud computing, the average delay is 26 ms, load 5 400 bits/s, CPU utilization email server 0.0001%, FTP server 0.001%, HTTP server 0.0002%, throughput email server 85 bits/s, FTP    server 100 bits/sec, and HTTP server 95  bits/s.  Thus,  the  delay, the load, and the CPU utilization decrease; but,  the throughput increases. Information technology service management with cloud computing approach has better performance.

  14. A Generic Framework for Extraction of Knowledge from Social Web Sources (Social Networking Websites for an Online Recommendation System

    Directory of Open Access Journals (Sweden)

    Javubar Sathick

    2015-04-01

    Full Text Available Mining social web data is a challenging task and finding user interest for personalized and non-personalized recommendation systems is another important task. Knowledge sharing among web users has become crucial in determining usage of web data and personalizing content in various social websites as per the user’s wish. This paper aims to design a framework for extracting knowledge from web sources for the end users to take a right decision at a crucial juncture. The web data is collected from various web sources and structured appropriately and stored as an ontology based data repository. The proposed framework implements an online recommender application for the learners online who pursue their graduation in an open and distance learning environment. This framework possesses three phases: data repository, knowledge engine, and online recommendation system. The data repository possesses common data which is attained by the process of acquiring data from various web sources. The knowledge engine collects the semantic data from the ontology based data repository and maps it to the user through the query processor component. Establishment of an online recommendation system is used to make recommendations to the user for a decision making process. This research work is implemented with the help of an experimental case study which deals with an online recommendation system for the career guidance of a learner. The online recommendation application is implemented with the help of R-tool, NLP parser and clustering algorithm.This research study will help users to attain semantic knowledge from heterogeneous web sources and to make decisions.

  15. Supervised Online Adaptive Control of Inverted Pendulum System Using ADALINE Artificial Neural Network with Varying System Parameters and External Disturbance

    Directory of Open Access Journals (Sweden)

    Sudeep Sharma

    2012-07-01

    Full Text Available Generalized Adaptive Linear Element (GADALINE Artificial Neural Network (ANN as an Artificial Intelligence (AI technique is used in this paper to online adaptive control of a Non-linear Inverted Pendulum (IP system. The ANN controller is designed with specifications as: network type is three (Input, Hidden and Output layered Feed-Forward Network (FFN, training is done by Widrow-Hoffs delta rule or Least Mean Square algorithm (LMS, that updates weight and bias states to minimize the error function. The research is focused on how to adapt the control actions to solve the problem of “parameter variations”. The method is applied to the Nonlinear IP model with the application of some uncertainties, and the experimental results show that the system responds very well to handle those uncertainties.

  16. An integrated system for the online monitoring of particle therapy treatment accuracy

    Science.gov (United States)

    Fiorina, E.

    2016-07-01

    Quality assurance in hadrontherapy remains an open issue that can be addressed with reliable monitoring of treatment accuracy. The INSIDE (INnovative SolutIons for DosimEtry in hadrontherapy) project aims to develop an integrated online monitoring system based on two dedicated PET panels and a tracking system, called Dose Profiler. The proposed solution is designed to operate in-beam and provide an immediate feedback on the particle range acquiring both photons produced by β+ decays and prompt secondary particle signals. Monte Carlo simulations cover an important role both in the system development, by confirming the design feasibility, and in the system operation, by understanding data. A FLUKA-based integrated simulation was developed taking into account the hadron beam structure, the phantom/patient features and the PET detector and Dose Profiler specifications. In addition, to reduce simulation time in signal generation on PET detectors, a two-step technique has been implemented and validated. The first PET modules were tested in May 2015 at the Centro Nazionale Adroterapia Oncologica (CNAO) in Pavia (Italy) with very satisfactory results: in-spill, inter-spill and post-treatment PET images were reconstructed and a quantitative agreement between data and simulation was found.

  17. Evaluating an online pharmaceutical education system for pharmacy interns in critical care settings.

    Science.gov (United States)

    Yeh, Yu-Ting; Chen, Hsiang-Yin; Cheng, Kuei-Ju; Hou, Ssu-An; Yen, Yu-Hsuan; Liu, Chien-Tsai

    2014-02-01

    Incorporating electronic learning (eLearning) system into professional experimental programs such as pharmacy internships is a challenge. However, none of the current systems can fully support the unique needs of clinical pharmacy internship. In this study we enhanced a commercial eLearning system for clinical pharmacy internship (The Clinical Pharmacy Internship eLearning System, CPIES). The KAP questionnaire was used to evaluate the performance of group A with the traditional teaching model and group B with the CPIES teaching model. The CPIES teaching model showed significant improvement in interns' knowledge and practice (p = 0.002 and 0.031, respectively). The traditional teaching model only demonstrated significant improvement in practice (p = 0.011). Moreover, professionalism, such as attitudes on cooperating with other health professionals, is developed by learning from a good mentor. The on-line teaching and traditional teaching methods should undoubtedly be blended in a complete teaching model in order to improve learners' professional knowledge, facilitate correct attitude, and influence good practice.

  18. Online multilingual vocabulary system and its application in L2 learning

    Directory of Open Access Journals (Sweden)

    Haruko Miyakoda

    2010-06-01

    Full Text Available In the field of second language teaching, vocabulary has been one of the most neglected areas in the classroom. Although language teachers/ instructors are well aware of the importance of vocabulary, there is not enough time in the classroom to actually “teach” vocabulary. Therefore, we need to find ways to promote autonomous vocabulary learning so that students can make good use of their time outside theclassrooms.In this study, we present an online vocabulary learning system that we have developed. The results obtained from our evaluation experiment indicate that our system is more effective in retaining the meaning of the words compared to the traditional learning method.As an example of applying this system to language learning, we will give a demonstration of a Japanese onomatopoeia dictionary that we are compiling. Onomatopoeia are especially troublesome for learners of the Japanese language. Although they are frequently used in both written and spoken Japanese, they are very difficult to translate to other languages. We demonstrate that by employing our system, learners are better able to understand the meaning and the context of eachlexical item.

  19. An integrated system for the online monitoring of particle therapy treatment accuracy

    Energy Technology Data Exchange (ETDEWEB)

    Fiorina, E., E-mail: fiorina@to.infn.it [Università degli Studi di Torino, Torino (Italy); Istituto Nazionale di Fisica Nucleare (INFN) (Italy)

    2016-07-11

    Quality assurance in hadrontherapy remains an open issue that can be addressed with reliable monitoring of treatment accuracy. The INSIDE (INnovative SolutIons for DosimEtry in hadrontherapy) project aims to develop an integrated online monitoring system based on two dedicated PET panels and a tracking system, called Dose Profiler. The proposed solution is designed to operate in-beam and provide an immediate feedback on the particle range acquiring both photons produced by β{sup +} decays and prompt secondary particle signals. Monte Carlo simulations cover an important role both in the system development, by confirming the design feasibility, and in the system operation, by understanding data. A FLUKA-based integrated simulation was developed taking into account the hadron beam structure, the phantom/patient features and the PET detector and Dose Profiler specifications. In addition, to reduce simulation time in signal generation on PET detectors, a two-step technique has been implemented and validated. The first PET modules were tested in May 2015 at the Centro Nazionale Adroterapia Oncologica (CNAO) in Pavia (Italy) with very satisfactory results: in-spill, inter-spill and post-treatment PET images were reconstructed and a quantitative agreement between data and simulation was found.

  20. On-Line Smoothing for an Integrated Navigation System with Low-Cost MEMS Inertial Sensors

    Directory of Open Access Journals (Sweden)

    Shih-Ching Huang

    2012-12-01

    Full Text Available The integration of the Inertial Navigation System (INS and the Global Positioning System (GPS is widely applied to seamlessly determine the time-variable position and orientation parameters of a system for navigation and mobile mapping applications. For optimal data fusion, the Kalman filter (KF is often used for real-time applications. Backward smoothing is considered an optimal post-processing procedure. However, in current INS/GPS integration schemes, the KF and smoothing techniques still have some limitations. This article reviews the principles and analyzes the limitations of these estimators. In addition, an on-line smoothing method that overcomes the limitations of previous algorithms is proposed. For verification, an INS/GPS integrated architecture is implemented using a low-cost micro-electro-mechanical systems inertial measurement unit and a single-frequency GPS receiver. GPS signal outages are included in the testing trajectories to evaluate the effectiveness of the proposed method in comparison to conventional schemes.

  1. A GIS Based 3D Online Decision Assistance System for Underground Energy Storage in Northern Germany

    Science.gov (United States)

    Nolde, M.; Schwanebeck, M.; Biniyaz, E.; Duttmann, R.

    2014-12-01

    We would like to present a GIS-based 3D online decision assistance system for underground energy storage. Its aim is to support the local land use planning authorities through pre-selection of possible sites for thermal, electrical and substantial underground energy storages. Since the extension of renewable energies has become legal requirement in Germany, the underground storing of superfluously produced green energy (such as during a heavy wind event) in the form of compressed air, gas or heated water has become increasingly important. However, the selection of suitable sites is a complex task. The assistance system uses data of geological features such as rock layers, salt caverns and faults enriched with attribute data such as rock porosity and permeability. This information is combined with surface data of the existing energy infrastructure, such as locations of wind and biogas stations, power line arrangement and cable capacity, and energy distribution stations. Furthermore, legal obligations such as protected areas on the surface and current underground mining permissions are used for the decision finding process. Not only the current situation but also prospective scenarios, such as expected growth in produced amount of energy are incorporated in the system. The decision process is carried out via the 'Analytic Hierarchy Process' (AHP) methodology of the 'Multi Object Decision Making' (MODM) approach. While the process itself is completely automated, the user has full control of the weighting of the different factors via the web interface. The system is implemented as an online 3D server GIS environment, with no software needed to be installed on the user side. The results are visualized as interactive 3d graphics. The implementation of the assistance system is based exclusively on free and open source software, and utilizes the 'Python' programming language in combination with current web technologies, such as 'HTML5', 'CSS3' and 'JavaScript'. It is

  2. Review: Ullrich Dittler, Michael Kindt & Christine Schwarz (Eds. (2007. Online-Communities als soziale Systeme. Wikis, Weblogs und Social Software im E-Learning [Online-Communities as Social Systems: Wikis, Weblogs and Social Software in E-Learning

    Directory of Open Access Journals (Sweden)

    Martin Welker

    2008-01-01

    Full Text Available The book Online-Communities as Social Systems: Wikis, Weblogs and Social Software in E-Learning by DITTLER, KINDT and SCHWARZ discusses the practice of new collaborative applications for learning and teaching in universities and schools. The authors summarize online communities from the perspective of German-speaking E-Learning researchers. The core questions under debate are whether, and how, new online platforms and communities will promote new forms of knowledge transfer and learning, and if there is a clash between free and institutionalized forms of learning. The empirical results presented here show that conflicts exist and that these arise through the use of social software in hierarchical organizations. URN: urn:nbn:de:0114-fqs0801467

  3. The IBM System 7 On-Line Circulation System at Slippery Rock State College.

    Science.gov (United States)

    Wood, Richard J.

    This article describes and evalutes the IBM System 7 automated circulation system in use at Slippery Rock State College Library since 1973. Background information is furnished on the library and its locale as well as the general rationale and objectives for automated circulation systems. The presentation of the IBM S/7 includes (1) reasons for its…

  4. Massive Open Online Courses (MOOCs, embedded systems, blended courses, sentiment analysis.

    Directory of Open Access Journals (Sweden)

    Ciprian Bogdan Chirila

    2017-04-01

    Full Text Available Nowadays, regional IT industry lacks human resources because of the pressure created on the labor market by the high-value economic projects. Tutors tend to be more and more loaded with teaching, research, and administrative tasks. Students tend to use more and more electronically devices like laptops, tablets, and mobile phones in their learning sessions. In this context, universities should rely more on technologies like: LMSs (Learning Management Systems, MOOCs (Massive Open Online Courses, and why not GLOs (Generative Learning Objects or evenAGLOs (Auto-generative Learning Objects. Auto-generative learning objects are reusable pedagogical patterns to be instantiated with generated content based on random numbers to fulfill the learning objectives. Many online e-learning resources are available containing interactive presentations, gamifications of several learning objectives. Such e-learning resources are hard to reuse and even harder to modify and adapt to; each discipline needs this because it needs access to the source code, programming knowledge to change, test and deploy etc. In this paper, we will focus on computer science disciplines needed in the regional IT industry, namely data structures and algorithms. We will show how a tutor can build several auto-generative learning objects in order to assess the knowledge of a class of students. We will start with the design of the generic models, then we will assess the generated content created with the help of a tool based on meta-programming, afterwards, we will deploy the content to a webserver to be consumed by the students. Finally, we will evaluate the assessed results and discuss the approach both from the student’s and the tutor’s perspective.

  5. Online Research Output Submission System as a mechanism to influence publication citations: A pilot study

    Directory of Open Access Journals (Sweden)

    Reetha Nundulall

    2017-01-01

    Full Text Available Background: Higher Education Institutions (HEIs need to ensure that the education provided meets the student’s and employer’s requirements, for today and the future. However, in addition to the challenges of teaching and learning, internationalisation, globalisation and world university rankings are rearing their heads thus increasing the demands made on many HEIs.Objective: One of the ways in which HEIs can make their mark is through world university rankings. This may be achieved by exposing more information on new and innovative research knowledge to the broader community in the global market via research publications that attract citations on open access platforms, hence influencing the university’s ranking. For this purpose and intent, a ‘simple’ and ‘easy-to-use’ online web tool was developed at a HEI. The aim was to have research publications submitted via the Online Research Output Submission System (OROSS tool, screened and deposited in the institution’s open access database.Method: Training was provided to the relevant participants and a survey was conducted to ascertain the participants’ perceptions about the utilisation of the OROSS tool and the training provided.Conclusion: This article reflects on the pilot phase of a longitudinal study. Results of an evaluation conducted by the researcher of the OROSS application from a user perspective (process are highlighted. In general, users rated OROSS favourably in terms of it being a useful, simple and easy-to-use web-based tool. The findings of this study may assist University of Johannesburg’s executive management in deciding the fate of the OROSS tool for future use.

  6. Predicting medical staff intention to use an online reporting system with modified unified theory of acceptance and use of technology.

    Science.gov (United States)

    Chang, I-Chiu; Hsu, Hui-Mei

    2012-01-01

    Barriers to report incident events using an online information system (IS) may be different from those of a paper-based reporting system. The nationwide online Patient-Safety Reporting System (PSRS) contains a value judgment behind use of the system, similar to the Value of Perceived Consequence (VPC), which is seldom discussed in ISs applications of other disciplines. This study developed a more adequate research framework by integrating the VPC construct into the well-known Unified Theory of Acceptance and Use of Technology (UTAUT) model as a theoretical base to explore the predictors of medical staff's intention to use online PSRS. The results showed that management support was an important factor to influence medical staff's intention of using PSRS. The effects of factors such as performance expectancy, perceived positive, and perceived negative consequence on medical staff's intention of using PSRS were moderated by gender, age, experience, and occupation. The results proved that the modified UTAUT model is significant and useful in predicting medical staff's intention of using the nationwide online PSRS.

  7. Web Based Interactive Software in International Business: The Case of the Global Market Potential System Online (GMPSO[C])

    Science.gov (United States)

    Janavaras, Basil J.; Gomes, Emanuel; Young, Richard

    2008-01-01

    This paper seeks to confirm whether students using the Global Market Potential System Online (GMPSO) web based software, (http://globalmarketpotential.com), for their class project enhanced their knowledge and understanding of international business. The challenge most business instructors and practitioners face is to determine how to bring the…

  8. On-line HPLC Analysis System for Metabolism and Inhibition Studies in Precision-Cut Liver Slices

    NARCIS (Netherlands)

    van Midwoud, Paul M.; Janssen, Joost; Merema, M.T.; de Graaf, Inge A. M.; Groothuis, Geny M. M.; Verpoorte, Elisabeth

    2011-01-01

    A novel approach for on-line monitoring of drug metabolism in continuously perifused, precision-cut liver slices (PCLS) in a microfluidic system has been developed using high-performance liquid chromatography with UV detection (HPLC-UV). In this approach, PCLS are incubated in a microfluidic device

  9. Online Solution of Two-Player Zero-Sum Games for Continuous-Time Nonlinear Systems With Completely Unknown Dynamics.

    Science.gov (United States)

    Fu, Yue; Chai, Tianyou

    2016-12-01

    Regarding two-player zero-sum games of continuous-time nonlinear systems with completely unknown dynamics, this paper presents an online adaptive algorithm for learning the Nash equilibrium solution, i.e., the optimal policy pair. First, for known systems, the simultaneous policy updating algorithm (SPUA) is reviewed. A new analytical method to prove the convergence is presented. Then, based on the SPUA, without using a priori knowledge of any system dynamics, an online algorithm is proposed to simultaneously learn in real time either the minimal nonnegative solution of the Hamilton-Jacobi-Isaacs (HJI) equation or the generalized algebraic Riccati equation for linear systems as a special case, along with the optimal policy pair. The approximate solution to the HJI equation and the admissible policy pair is reexpressed by the approximation theorem. The unknown constants or weights of each are identified simultaneously by resorting to the recursive least square method. The convergence of the online algorithm to the optimal solutions is provided. A practical online algorithm is also developed. Simulation results illustrate the effectiveness of the proposed method.

  10. The Effect of Implementing Knowledge Management System in Supplier Selection Content to Improve Learning Performance of Online Travel Agencies Staff

    Science.gov (United States)

    Ariya, Pakinee; Chakpitak, Nopasit; Sureepong, Pradorn

    2016-01-01

    Supplier selection knowledge of OTAs businesses is one of the most valuable and significant knowledge since OTAs now operate businesses that gain their benefits from having many kinds of tourism products and services for customers to browse from in their own online booking systems. The better the suppliers, the more successful will OTAs be. The…

  11. Combining Design Patterns and Elements of Social Computing for the Design of User Centered Online Help Systems

    Science.gov (United States)

    Heckner, Markus; Schworm, Silke; Wolff, Christian

    2010-01-01

    Many current (online) help systems fail because users refuse to use them or, even if they do so, they do not perceive them as helpful. There is an obvious gap between the intentions of the help content authors and the achievement of objectives concerning the perceived usefulness by help users. Problems may be divided into psychological and…

  12. Web Based Interactive Software in International Business: The Case of the Global Market Potential System Online (GMPSO[C])

    Science.gov (United States)

    Janavaras, Basil J.; Gomes, Emanuel; Young, Richard

    2008-01-01

    This paper seeks to confirm whether students using the Global Market Potential System Online (GMPSO) web based software, (http://globalmarketpotential.com), for their class project enhanced their knowledge and understanding of international business. The challenge most business instructors and practitioners face is to determine how to bring the…

  13. The Corrosion Inhibition Characteristics of Sodium Nitrite Using an On-line Corrosion Rate Measurement System

    Energy Technology Data Exchange (ETDEWEB)

    Park, Mal-Yong; Kang, Dae-Jin [Korea Polytechnic University, Shiheung (Korea, Republic of); Moon, Jeon-Soo [Future Technology Research Laboratory, KEPCO Research Institute, Daejeon (Korea, Republic of)

    2015-04-15

    An on-line corrosion rate measurement system was developed using a personal computer, a data acquisition board and program, and a 2-electrode corrosion probe. Reliability of the developed system was confirmed with through comparison test. With this system, the effect of sodium nitrite (NaNO{sub 2}) as a corrosion inhibitor were studied on iron and aluminum brass that were immersed in sodium chloride (NaCl) solution. Corrosion rate was measured based on the linear polarization resistance method. The corrosion rates of aluminum brass and iron in 1% NaCl solutions were measured to be 0.290 mm per year (mmpy) and 0.2134 mmpy, respectively. With the addition of 200 ppm of NO{sub 2}{sup -}, the corrosion rates decreased to 0.0470 mmpy and 0.0254 mmpy. The addition of NO{sub 2}{sup -} caused a decrease in corrosion rates of both aluminum brass and iron, yet the NO{sub 2}{sup -} acted as a more effective corrosion inhibitor for iron. than aluminum brass.

  14. Evaluation of Academic Self-Concept Scale With "Online Decision Support System For Counseling Services"

    Directory of Open Access Journals (Sweden)

    Salman ÇAKIR

    2013-12-01

    Full Text Available Guidance and psychological consultancy services in Turkish education system is basically oriented students to realize their skills and prove themselves, to benefit from the process of education in top level according to their talents and qualifications, to use and improve their potential in most convenient way. Leading students to the jobs according to their characteristics, interests and talents defines the fate of countries and communities. Individuals discover their interests and talents and they are guided to professions according to those interests and talents with the Scale of Academic Self-Concept (SASC that is the one of implements used in vocational guidance at schools. Application of these assessment and evaluation instruments in schools brings about paper waste, increases stationer expenses and takes guidance counselors’ time too much during the evaluation phase. (SODSGS that is enhanced in this practice, the system of online decision and support for guidance service, resolves most of these problems mentioned before. SODSGS is added with SASC that is used for vocational guidance in schools and evaluation criteria. In an attempt to test the system whether it is working properly, they are compared and contrasted with the results that guidance counselor acquired before, by loading survey data implemented in 2010-2011 education period. It is observed that results of SODSGS and guidance counselors’ are coherent with each other. Using SASC through SODSGS will be beneficial in terms of expenditure, time and credibility at schools

  15. THE STUDENTS' EXPERIENCES OF ETHICS IN ONLINE SYSTEMS: A Phenomenological Study

    Directory of Open Access Journals (Sweden)

    Leili MOSALANEJAD

    2014-10-01

    Full Text Available Cyber ethics is the philosophical study of ethics pertaining to computer networks encompassing users' behavior, what networked computers are programmed to do, and how this affects the individuals and the society. This study aimed to investigate the students' experiences of ethics in cyber systems.In the present study, the researchers conducted in-depth, semi-structured interviews in a sample of students in JahromUniversity of Medical Sciences between November 2012 and February 2013. The interviews focused on the students' experiences of online ethics. Content analysis techniques were used to code and analyze the study data.The data were gathered from 25 interviews and 5 focused groups. The extracted codes were classified into two categories of positive and negativeimplications. The main themes of the study included ethicalimplications, cyber curiosity, limitation, virtual liberty, and development of ethics in the cyber system. Considering the importance ofethicsin thevirtual systems, it is necessary to train the studentsregardingthe optimalutilizationof thecyber space. Also, the students should be trained regarding the useof technology invarious scientific fields.

  16. An online debris sensor system with vibration resistance for lubrication analysis.

    Science.gov (United States)

    Ding, Yongbin; Wang, Yanxue; Xiang, Jiawei

    2016-02-01

    The health condition of the lubricated systems can be directly indicated by the concentration and material type of the abrasive particles, which may provide very early warnings of faults/failures and benefit the condition based maintenance. Oil debris particle detecting techniques are thus important for machinery condition monitoring and fault diagnosis. This work proposes a new structure of online debris sensor (ODS), which applies the radial magnetic field, different from the traditional axial magnetic field. The designed ODS can effectively reduce the interferences of the background noise and the vibration of the machine in operation. Moreover, in order to optimally determine the number of turns of an inductive coil and the current of the drive coils, two methods are developed respectively in this work which can ensure sensitivity and anti-vibration features of the ODS. The instrumentation circuit system for detecting debris particles and sensing signals has been also designed to extract and to record the signatures of particles. The designed ODS device is then applied to analyze micro debris particles in the lubricating system on a test rig. Experimental results have demonstrated that ODS can successfully detect the 120 μm(H) ferrous particles and 500 μm(H) non-ferrous particles under vibration conditions.

  17. Research of online shopping system based on JSP%基于JSP的网上购物系统研究

    Institute of Scientific and Technical Information of China (English)

    汪东芳; 薛丽香

    2016-01-01

    传统的商品交易与销售模式已经不能满足人们的需求。越来越多的人正在逐步接受网上购物这种新的购物方式,购物网站也得到越来越多人的关注。文章使用JSP技术设计了一款网上购物系统,可以实现网上图书的销售与购买操作。%The traditional commodity trading and sales model has been unable to meet the needs of people.More and more people are gradually accepting this new way of shopping online , shopping sites are also getting more and more people's attention.In this paper, we use JSP technology to design an online shopping system, which can realize the online book sales and purchase operation.

  18. Copyright in the age of online access : Alternative compensation systems in EU copyright law

    NARCIS (Netherlands)

    de Miranda Branco Tomé Quintais, J.P.

    2017-01-01

    The large majority of the EU population uses the Internet. For many individuals, their online acts of enjoyment and expression are restricted by copyright. For users and rights holders alike, the existing model of exclusivity with enforcement is problematic. Online enforcement is either impossible

  19. System, Scholar or Students? Which Most Influences Online MBA Course Effectiveness?

    Science.gov (United States)

    Arbaugh, J. B.

    2014-01-01

    Considering the increasingly challenging resource environments in many business schools, this study examined whether course technologies, learner behaviors or instructor behaviors best predict online course outcomes so that administrators and support personnel can prioritize their efforts and investments. Based on reviewing prior online and…

  20. Use of Signaling to Integrate Desktop Virtual Reality and Online Learning Management Systems

    Science.gov (United States)

    Dodd, Bucky J.; Antonenko, Pavlo D.

    2012-01-01

    Desktop virtual reality is an emerging educational technology that offers many potential benefits for learners in online learning contexts; however, a limited body of research is available that connects current multimedia learning techniques with these new forms of media. Because most formal online learning is delivered using learning management…

  1. Development of on-line type TSC for Seibu region power source system .; Online gata TSC no seibu homen dengen keito eno donyu

    Energy Technology Data Exchange (ETDEWEB)

    Inoue, I. [Chubu Electric Power Co. Inc., Nagoya (Japan)

    1996-07-01

    This paper summarizes an on-line computing type transient stability controller (TSC) introduced in a power source system. The controller deals with instability in a power source system caused by expansion in thermal power plants. The controller is intended to carry out optimal power source restriction during a fault caused by lightning and other events, and avoid load interruption. This system comprises a central computing device, a child station device, an actuator and a transfer interruption device, each being duplicate composition. The central computing device determines assumed faults according to the computation flow and selects an optimal power controller periodically in unstable cases. The TSC also calculates a correlation expression between power control amount and transmission line current. This primary relation expression allows the child station device to perform system stabilizing control even if both lines of the central computing device have failed. Characteristics of this power source TSC include the following: the analysis engine has higher speed than a trunk-based TSC; the measures to stabilize the system are as various as shutdown of generators and control of steam valves; it has excellent system expandability; and it has highly diverse child station back-up functions. 5 figs., 1 tab.

  2. A Study of Online Review Promptness in a B2C System

    Directory of Open Access Journals (Sweden)

    Junqiang Zhang

    2016-01-01

    Full Text Available Web 2.0 technologies have attracted an increasing number of active online writers and viewers. A deeper understanding of when customers will review and what motivates them to write online reviews is of both theoretical and practical significance. In this paper, we present a novel methodological framework, which consists of theoretical modeling and text-mining technologies, to study the relationships among customers’ review promptness, their review opinions, and their review motivations. We first study customers’ online “purchase-review” behavior dynamics; then, we introduce the LDA method to mine customers’ opinion from their review text; finally, we propose a theoretical model to explore some motivations for those people publishing review online. The analytical and experimental results with real data from a Chinese B2C website demonstrate that the behavior dynamics of customers’ online review are influenced by the multidimensional motivations, and some of them can be observed from their review behaviors, such as review promptness.

  3. Development of an on-line froth vision system for control of coal flotation

    Energy Technology Data Exchange (ETDEWEB)

    Nguyen, K.K.; Holtham, P.N.; Brake, I.R. [University of Queensland, Brisbane, Qld. (Australia). Julius Kruttschnitt Mineral Research Centre

    1998-12-31

    Flotation is one of the important processes used to recover minus 0.5 mm coal, but the automatic control of flotation has always been difficult due to a lack of suitable process instrumentation. While cell levels can be readily measured, and feed and tailings pulps can be assayed for ash level and solids concentration using on-stream analysers, these measurements alone are not generally sufficient for effective process control. Visual inspection of froth conditions by the flotation operator can provide additional data, and experienced operators are able to make process adjustments based on examination of froth characteristics such as average bubble size and froth mobility. At present, instrumentation to evaluate the appearance of the froth is not available, and hence this aspect of flotation plant operation is still manually controlled. This paper presents the results from the development of an industrial video-based pattern recognition system for image analysis of flotation froth. The system has been applied to one of the sixteen 3 m diameter Microcel flotation columns at Peak Downs coal preparation plant in central Queensland. Results from the system to date show that it can successfully identify froth type and estimate average bubble size and froth speed. The machine vision system currently developed provides sufficient processing power to support minute by minute updates of these froth characteristics as well as a live video output to the screen. On-line predictions of percent ash and solids in the froth are well correlated with those obtained by laboratory analysis. The system is currently being linked to the Peak Downs plant PLC to allow a trial of closed loop control of flotation. 5 refs., 7 figs.

  4. An Online Solution of LiDAR Scan Matching Aided Inertial Navigation System for Indoor Mobile Mapping

    Directory of Open Access Journals (Sweden)

    Xiaoji Niu

    2017-01-01

    Full Text Available Multisensors (LiDAR/IMU/CAMERA integrated Simultaneous Location and Mapping (SLAM technology for navigation and mobile mapping in a GNSS-denied environment, such as indoor areas, dense forests, or urban canyons, becomes a promising solution. An online (real-time version of such system can extremely extend its applications, especially for indoor mobile mapping. However, the real-time response issue of multisensors is a big challenge for an online SLAM system, due to the different sampling frequencies and processing time of different algorithms. In this paper, an online Extended Kalman Filter (EKF integrated algorithm of LiDAR scan matching and IMU mechanization for Unmanned Ground Vehicle (UGV indoor navigation system is introduced. Since LiDAR scan matching is considerably more time consuming than the IMU mechanism, the real-time synchronous issue is solved via a one-step-error-state-transition method in EKF. Stationary and dynamic field tests had been performed using a UGV platform along typical corridor of office building. Compared to the traditional sequential postprocessed EKF algorithm, the proposed method can significantly mitigate the time delay of navigation outputs under the premise of guaranteeing the positioning accuracy, which can be used as an online navigation solution for indoor mobile mapping.

  5. Mixed-Initiative Tutorial System to Aid Users of the On-Line System (NLS).

    Science.gov (United States)

    Grignetti, Mario C.; And Others

    NLS-SCHOLAR is a prototype system that uses artificial intelligence techniques to teach computer-naive people how to use a powerful and complex text editor. It represents a new type of computer-assisted instruction (CAI) system that integrates systematic teaching with actual practice; i.e., one which can keep the user under tutorial supervision…

  6. Thermoluminescence (TL) spectra from quartz grains using on-line TL-spectrometric system

    Energy Technology Data Exchange (ETDEWEB)

    Hashimoto, T.; Sugai, N.; Sakaue, H.; Shirai, N. [Niigata University, Niigata (Japan). Faculty of Science; Yasuda, K. [Daiwa Geological Laboratory Co. Ltd., Fukushima (Japan)

    1997-12-31

    An on-line spectrometric system installed with a small spectrometer and an image intensifier unit has been developed for weak and changeable TL-spectrum measurements with rising temperature for application to natural minerals. The detection sensitivity over visible wavelength regions was corrected using a known spectrum from a standard light source, and the detection sensitivity was also examined by a chemical luminol reaction. In an applied experiment, two quartz grain samples from two pyroclastic flows of the same origin, were subjected to testing with the present measuring system. The original data, consisting of 512 channels for every second at a constant heating rate of 1degC/s, were used to create a contour map or a 3-dimensional expression of TL-spectra after subtraction of background radiation. The artificially irradiated quartz grains clearly showed both red (RTL) and blue TL (BTL) in contrast to RTL alone from naturally accumulated TL. Both spectral expressions and glow curves from the same original data were found to be available to estimate quartz formation temperatures, together with thermoluminescence color images (TLCIs). 24 refs., 9 figs.

  7. A Privacy-Preserving Attribute-Based Reputation System in Online Social Networks

    Institute of Scientific and Technical Information of China (English)

    Linke Guo; Chi Zhang; Yuguang Fang; Phone Lin

    2015-01-01

    Online social networks (OSNs) have revolutionarily changed the way people connect with each other. One of the main factors that help achieve this success is reputation systems that enable OSN users to mutually establish trust relationships based on their past experience. Current approaches for the reputation management cannot achieve the fine granularity and verifiability for each individual user, in the sense that the reputation values on such OSNs are coarse and lack of credibility. In this paper, we propose a fine granularity attribute-based reputation system which enables users to rate each other’s attributes instead of identities. Our scheme first verifies each OSN user’s attributes, and further allows OSN users to vote on the posted attribute-associated messages to derive the reputation value. The attribute verification process provides the authenticity of the reputation value without revealing the actual value to entities who do not have the vote privilege. To predict a stranger’s behavior, we propose a reputation retrieval protocol for querying the reputation value on a specific attribute. To the best of our knowledge, we are the first to define a fine-grained reputation value based on users’ verified attributes in OSNs with privacy preservation. We provide the security analysis along with the simulation results to verify the privacy preservation and feasibility. The implementation of the proposed scheme on current OSNs is also discussed.

  8. Forensic Evidence Identification and Modeling for Attacks against a Simulated Online Business Information System

    Directory of Open Access Journals (Sweden)

    Manghui Tu

    2012-12-01

    Full Text Available Forensic readiness can support future forensics investigation or auditing on external/internal attacks, internal sabotage and espionage, and business frauds. To establish forensics readiness, it is essential for an organization to identify what evidences are relevant and where they can be found, to determine whether they are logged in a forensic sound way and whether all the needed evidences are available to reconstruct the events successfully.  Our goal of this research is to ensure evidence availability. First, both external and internal attacks are molded as augmented attack trees/graphs based on the system vulnerabilities. Second, modeled attacks are conducted against a honeynet simulating an online business information system, and each honeypot's hard drive is forensic sound imaged for each individual attack. Third, an evidence tree/graph will be built after forensics examination on the disk images for each attack. The evidence trees/graphs are expected to be used for automatic crime scene reconstruction and automatic attack/fraud detection in the future.

  9. Variable high-resolution color CCD camera system with online capability for professional photo studio application

    Science.gov (United States)

    Breitfelder, Stefan; Reichel, Frank R.; Gaertner, Ernst; Hacker, Erich J.; Cappellaro, Markus; Rudolf, Peter; Voelk, Ute

    1998-04-01

    Digital cameras are of increasing significance for professional applications in photo studios where fashion, portrait, product and catalog photographs or advertising photos of high quality have to be taken. The eyelike is a digital camera system which has been developed for such applications. It is capable of working online with high frame rates and images of full sensor size and it provides a resolution that can be varied between 2048 by 2048 and 6144 by 6144 pixel at a RGB color depth of 12 Bit per channel with an also variable exposure time of 1/60s to 1s. With an exposure time of 100 ms digitization takes approx. 2 seconds for an image of 2048 by 2048 pixels (12 Mbyte), 8 seconds for the image of 4096 by 4096 pixels (48 Mbyte) and 40 seconds for the image of 6144 by 6144 pixels (108 MByte). The eyelike can be used in various configurations. Used as a camera body most commercial lenses can be connected to the camera via existing lens adaptors. On the other hand the eyelike can be used as a back to most commercial 4' by 5' view cameras. This paper describes the eyelike camera concept with the essential system components. The article finishes with a description of the software, which is needed to bring the high quality of the camera to the user.

  10. Implementasi Dan Perancangan Online Charging System (OCS IPTV Multichannel pada Jaringan IPv6

    Directory of Open Access Journals (Sweden)

    Bagus Wahyu Nugraha

    2014-03-01

    Full Text Available IPTV didefinisikan sebagai layanan multimedia berbentuk data seperti televisi, video, audio, text, grafik yang dikirimkan melalui jaringan berbasisi IP tetapi harus diberikan dengan persyaratan seperti QOS dan experience, security, interactivity dan reliability.  Beberapa  feature yang  dimiliki oleh IPTV ini adalah IPTV dapat menyiarkan secara live  atau prerecorded digital video program-program pendidikan, komersial, scheduling / penjadwalan program dsb. Tentunya hal ini menggunakan IPTV akan menguntungkan dari sisi bisnis mengingat semakin banyaknya pengguna broadband. Dengan konvergen antara televisi, telephone dan access internet, IPTV dapat berkembang sesuai dengan tren masa kini yaitu IP based, sehingga mudah di akses oleh pengguna dan proses charging/billing yang sesuai dengan standar bisnis yang ada. Oleh karena itu, “Design and Implementation Online Charging System (OCS IPTV Multichannel on IPv6 Network“ dibuat sebagai layanan konten yang dapat digunakan untuk teknologi yang menggunakan IP based. Dalam pembuatan rancang bangun system billing pada IPTV ini dihasilkan sebuah software yang user friendly sehingga penyedia layanan IPTV dapat dengan mudah menggunakan software yang telah dibuat.

  11. TargetVue: Visual Analysis of Anomalous User Behaviors in Online Communication Systems.

    Science.gov (United States)

    Cao, Nan; Shi, Conglei; Lin, Sabrina; Lu, Jie; Lin, Yu-Ru; Lin, Ching-Yung

    2016-01-01

    Users with anomalous behaviors in online communication systems (e.g. email and social medial platforms) are potential threats to society. Automated anomaly detection based on advanced machine learning techniques has been developed to combat this issue; challenges remain, though, due to the difficulty of obtaining proper ground truth for model training and evaluation. Therefore, substantial human judgment on the automated analysis results is often required to better adjust the performance of anomaly detection. Unfortunately, techniques that allow users to understand the analysis results more efficiently, to make a confident judgment about anomalies, and to explore data in their context, are still lacking. In this paper, we propose a novel visual analysis system, TargetVue, which detects anomalous users via an unsupervised learning model and visualizes the behaviors of suspicious users in behavior-rich context through novel visualization designs and multiple coordinated contextual views. Particularly, TargetVue incorporates three new ego-centric glyphs to visually summarize a user's behaviors which effectively present the user's communication activities, features, and social interactions. An efficient layout method is proposed to place these glyphs on a triangle grid, which captures similarities among users and facilitates comparisons of behaviors of different users. We demonstrate the power of TargetVue through its application in a social bot detection challenge using Twitter data, a case study based on email records, and an interview with expert users. Our evaluation shows that TargetVue is beneficial to the detection of users with anomalous communication behaviors.

  12. Fourteen Thousand Solar Systems and Growing: Results From the Starchitect Online Game at One Year

    Science.gov (United States)

    Harold, J. B.

    2015-12-01

    Starchitect (www.starchitect.net) is an online, end-to-end stellar and planetary evolution game designed to teach players about a variety of astronomy and planetary topics. Supported by NASA and NSF, and developed at the National Center for Interactive Learning at the Space Science Institute, the game uses the "sporadic play" model of games such as Farmville, where players might only take actions a few times a day, but continue playing for months. This framework is a natural fit for teaching about the evolution of stars and planets. Starchitect's systems evolve at a million years a minute, so that while massive stars will supernova almost immediately, lower mass stars like our sun will live for weeks of game time, possibly evolving life before passing through a red giant stage and ending their lives as white dwarfs. The game has now been live for over a year, playable both on Facebook and externally, and over 14,000 solar systems have been created by over 11,000 players. Since the game itself is heavily instrumented we now have access to a wealth of data that can be used to examine how people are playing the game and what tasks they are successfully engaging with. Through an embedded quiz game we are even in the position to assess the prior knowledge of our audience and execute pre/post assessments tied to game play. This paper will briefly describe the game and its educational strategies, then summarize some of our current results.

  13. Research on Influential Factors Analysis and Uncertainty Evaluation About Connected Liquid Level Sensor System Online Measuring Method

    Science.gov (United States)

    Geng, L.; Liu, J.

    The accuracy of damage alarming and damage identification of bridge structural and the reliability of reliability evaluation and the fatigue life evaluation depend on the data of sensor. At present, sample calibration is only done hi the initial installation of sensors of the sensing system for long-term monitoring of the bridge and generally is not done in using. So whether the system is stable and reliable is unable to be known. In this paper, on the model of connected liquid level sensor system, value traceability approach of sensor system online measuring method is studied by the field experiment and theory research based on technical index of measurement (output displacement) proposed by output parameters of integrated deflection sensing system. Applicable connected liquid level sensor system online measuring method is established and influential factors and the uncertainty are analyzed. Finally the applicable scope of the method is obtained. This paper has made the beneficial exploration on online measurement of the instrument after the installation of the bridge health monitoring system.

  14. A Sustainable Paperless Online System (SPOS for Engineering Quality in Teaching: Koya University as a Case Study

    Directory of Open Access Journals (Sweden)

    Salah I. Yahya

    2015-01-01

    Full Text Available Rapidly advancing computer based technologies offer many possibilities for innovation in educational and administrative assessment tasks which allow for a reliable real time reporting and feedback process. This paper considers the requirements for teacher assessments to become an accurate and reliable process. As a case study, the challenges of implementing such a system at Koya University have been considered. This paper examines how a paperless online system can support faculties' efforts for improving sustainable quality in learning and up-to-date assessment techniques. The proposed sustainable paperless online system (SPOS uses Google Applications for Education that have been adopted at Koya university as a communications and collaboration medium to enhance its teaching quality. Such a system may enhance security, transparency and ease of use while consuming less time and resources and promoting green practice. The work throughout this paper explains how the initiative is engineered for achieving and monitoring a better quality in teaching.

  15. Process modeling and bottleneck mining in online peer-review systems.

    Science.gov (United States)

    Premchaiswadi, Wichian; Porouhan, Parham

    2015-01-01

    This paper is divided into three main parts. In the first part of the study, we captured, collected and formatted an event log describing the handling of reviews for proceedings of an international conference in Thailand. In the second part, we used several process mining techniques in order to discover process models, social, organizational, and hierarchical structures from the proceeding's event log. In the third part, we detected the deviations and bottlenecks of the peer review process by comparing the observed events (i.e., authentic dataset) with a pre-defined model (i.e., master map). Finally, we investigated the performance information as well as the total waiting time in order to improve the effectiveness and efficiency of the online submission and peer review system for the prospective conferences and seminars. Consequently, the main goals of the study were as follows: (1) to convert the collected event log into the appropriate format supported by process mining analysis tools, (2) to discover process models and to construct social networks based on the collected event log, and (3) to find deviations, discrepancies and bottlenecks between the collected event log and the master pre-defined model. The results showed that although each paper was initially sent to three different reviewers; it was not always possible to make a decision after the first round of reviewing; therefore, additional reviewers were invited. In total, all the accepted and rejected manuscripts were reviewed by an average of 3.9 and 3.2 expert reviewers, respectively. Moreover, obvious violations of the rules and regulations relating to careless or inappropriate peer review of a manuscript-committed by the editorial board and other staff-were identified. Nine blocks of activity in the authentic dataset were not completely compatible with the activities defined in the master model. Also, five of the activity traces were not correctly enabled, and seven activities were missed within the

  16. Monitoring systems online of oil for transformers of nuclear power plants; Sistemas de monitorizacion online del aceite para transformadores de potencia de Centrales

    Energy Technology Data Exchange (ETDEWEB)

    Sarandeses, S.

    2014-07-01

    The nuclear power plants are showing their concern due to the existence of recent failures related to the bulky transformers of power. These transformers are not security, but are important for the production of power as its failure can cause transient on the floor, reactor scram or shooting, that can cause interruptions in the production of energy or might force us to reduce the power of production The analysis of gases dissolved in transformer oil is recognized as a trial key to identify a submerged transformer failure in oil. With this analysis it is not possible to ensure that there is no damage in the transformer, but the probability of risk of this type of failure can be reduced. The industry recommended to equip the new large power transformers with oil online monitoring systems and in some cases also be It recommended its use in existing transformers. (Author)

  17. EEG-based learning system for online motion sickness level estimation in a dynamic vehicle environment.

    Science.gov (United States)

    Lin, Chin-Teng; Tsai, Shu-Fang; Ko, Li-Wei

    2013-10-01

    Motion sickness is a common experience for many people. Several previous researches indicated that motion sickness has a negative effect on driving performance and sometimes leads to serious traffic accidents because of a decline in a person's ability to maintain self-control. This safety issue has motivated us to find a way to prevent vehicle accidents. Our target was to determine a set of valid motion sickness indicators that would predict the occurrence of a person's motion sickness as soon as possible. A successful method for the early detection of motion sickness will help us to construct a cognitive monitoring system. Such a monitoring system can alert people before they become sick and prevent them from being distracted by various motion sickness symptoms while driving or riding in a car. In our past researches, we investigated the physiological changes that occur during the transition of a passenger's cognitive state using electroencephalography (EEG) power spectrum analysis, and we found that the EEG power responses in the left and right motors, parietal, lateral occipital, and occipital midline brain areas were more highly correlated to subjective sickness levels than other brain areas. In this paper, we propose the use of a self-organizing neural fuzzy inference network (SONFIN) to estimate a driver's/passenger's sickness level based on EEG features that have been extracted online from five motion sickness-related brain areas, while either in real or virtual vehicle environments. The results show that our proposed learning system is capable of extracting a set of valid motion sickness indicators that originated from EEG dynamics, and through SONFIN, a neuro-fuzzy prediction model, we successfully translated the set of motion sickness indicators into motion sickness levels. The overall performance of this proposed EEG-based learning system can achieve an average prediction accuracy of ~82%.

  18. Phosphite determination in fertilizers after online sequential sample preparation in a flow injection system.

    Science.gov (United States)

    Dametto, Patrícia Roberta; Franzini, Vanessa Pezza; Gomes Neto, José Anchieta

    2007-07-25

    A flow injection spectrophotometric system is proposed for phosphite determination in fertilizers by the molybdenum blue method after the processing of each sample two times on-line without and with an oxidizing step. The flow system was designed to add sulfuric acid or permanganate solutions alternately into the system by simply displacing the injector-commutator from one resting position to another, allowing the determination of phosphate and total phosphate, respectively. The concentration of phosphite is obtained then by difference between the two measurents. The influence of flow rates, sample volume, and dimension of flow line connecting the injector-commutator to the main analytical channel was evaluated. The proposed method was applied to phosphite determination in commercial liquid fertilizers. Results obtained with the proposed FIA system were not statistically different from those obtained by titrimetry at the 95% confidence level. In addition, recoveries within 94 and 100% of spiked fertilizers were found. The relative standard deviation (n = 12) related to the phosphite-converted-phosphate peak alone was

  19. FPGA implementation of a hybrid on-line process monitoring in PC based real-time systems

    Directory of Open Access Journals (Sweden)

    Jovanović Bojan

    2011-01-01

    Full Text Available This paper presents one way of FPGA implementation of hybrid (hardware-software based on-line process monitoring in Real-Time systems (RTS. The reasons for RTS monitoring are presented at the beginning. The summary of different RTS monitoring approaches along with its advantages and drawbacks are also exposed. Finally, monitoring module is described in details. Also, FPGA implementation results and some useful monitoring system applications are mentioned.

  20. Evaluating the feasibility and participants' representativeness of an online nationwide surveillance system for influenza in France.

    Directory of Open Access Journals (Sweden)

    Marion Debin

    Full Text Available The increasing Internet coverage and the widespread use of digital devices offer the possibility to develop new digital surveillance systems potentially capable to provide important aid to epidemiological and public health monitoring and research. In France, a new nationwide surveillance system for influenza-like illness, GrippeNet.fr, was introduced since the 2011/2012 season based on an online participatory mechanism and open to the general population. We evaluate the recruitment and participation of users to the first pilot season with respect to similar efforts in Europe to assess the feasibility of establishing a participative network of surveillance in France. We further investigate the representativeness of the GrippeNet.fr population along a set of indicators on geographical, demographic, socio-economic and health aspects. Participation was widespread in the country and with rates comparable to other European countries with partnered projects running since a longer time. It was not representative of the general population in terms of age and gender, however all age classes were represented, including the older classes (65+ years old, generally less familiar with the digital world, but considered at high risk for influenza complications. Once adjusted on demographic indicators, the GrippeNet.fr population is found to be more frequently employed, with a higher education level and vaccination rate with respect to the general population. A similar propensity to commute for work to different regions was observed, and no significant difference was found for asthma and diabetes. Results show the feasibility of the system, provide indications to inform adjusted epidemic analyses, and highlight the presence of specific population groups that need to be addressed by targeted communication strategies to achieve a higher representativeness in the following seasons.

  1. Evaluating the feasibility and participants' representativeness of an online nationwide surveillance system for influenza in France.

    Science.gov (United States)

    Debin, Marion; Turbelin, Clément; Blanchon, Thierry; Bonmarin, Isabelle; Falchi, Alessandra; Hanslik, Thomas; Levy-Bruhl, Daniel; Poletto, Chiara; Colizza, Vittoria

    2013-01-01

    The increasing Internet coverage and the widespread use of digital devices offer the possibility to develop new digital surveillance systems potentially capable to provide important aid to epidemiological and public health monitoring and research. In France, a new nationwide surveillance system for influenza-like illness, GrippeNet.fr, was introduced since the 2011/2012 season based on an online participatory mechanism and open to the general population. We evaluate the recruitment and participation of users to the first pilot season with respect to similar efforts in Europe to assess the feasibility of establishing a participative network of surveillance in France. We further investigate the representativeness of the GrippeNet.fr population along a set of indicators on geographical, demographic, socio-economic and health aspects. Participation was widespread in the country and with rates comparable to other European countries with partnered projects running since a longer time. It was not representative of the general population in terms of age and gender, however all age classes were represented, including the older classes (65+ years old), generally less familiar with the digital world, but considered at high risk for influenza complications. Once adjusted on demographic indicators, the GrippeNet.fr population is found to be more frequently employed, with a higher education level and vaccination rate with respect to the general population. A similar propensity to commute for work to different regions was observed, and no significant difference was found for asthma and diabetes. Results show the feasibility of the system, provide indications to inform adjusted epidemic analyses, and highlight the presence of specific population groups that need to be addressed by targeted communication strategies to achieve a higher representativeness in the following seasons.

  2. Online Measurement Perspectives for Students’ Strategy Use: Tool Use within a Content Management System

    Directory of Open Access Journals (Sweden)

    Griet Lust

    2012-01-01

    Full Text Available The current study investigates whether students’ tool use in a Content Management Systems (CMSs for example, blackboard, WebCT, relates to students’ strategy use within a CMS-supported course. In this way, the study strives to explain the tool use differences, and furthermore, it strives to find (online behavioral indications for students’ strategy use. Data were collected within a first-year undergraduate course “Learning & Instruction”. Students (n=182 reported their strategy use as measured through the Inventory of Learning Styles (Vermunt, 1998. Students’ tool use within the CMS was logged. K-means cluster analyses revealed four clusters that were characterized by different strategies and accompanying tool use. Specifically, two clusters revealed a tool use pattern that was in line with the behavioral profile of students’-reported strategy use. Interestingly, two clusters revealed a tool use pattern that was in contrast to the reported strategy use. These results raise questions with respect to students’ tool perceptions and students’ calibration capacities.

  3. Design and experimental research of the on-line detection system for diamond arc grinding wheel

    Science.gov (United States)

    Zhang, Feihu; Li, Chen; Liu, Zhongde; Ren, Lele; Xie, Haisheng

    2016-10-01

    The principle of measuring displacement by eddy current sensor was derived. The calibration experiment was carried out for 5 kinds of different materials, which showed that the linearity of eddy current sensor was better, and the sensitivity of eddy current sensor varied with different materials. Based on the principle of measuring displacement by eddy current sensor, the on-line detection system for diamond circular wheel was designed, and the data acquisition was realized by using LABVIEW software. By moving the eddy current sensor in the vertical direction with the grinding wheel fixed, the coordinate of arc in the grinding wheel was obtained. The radius of the grinding wheel was fitted by using the genetic algorithm, which showed that the fitting results were accurate. The data acquisition of the grinding wheel was carried out in a cycle by fixing the electric eddy current sensor and the circulars of the grinding wheel in different processes, namely before dressing, after dressing and after shaping. The results showed that the circular of the grinding wheel after dressing and after shaping were significantly improved compared with that before dressing.

  4. Online Model Learning of Buildings Using Stochastic Hybrid Systems Based on Gaussian Processes

    Directory of Open Access Journals (Sweden)

    Hamzah Abdel-Aziz

    2017-01-01

    Full Text Available Dynamical models are essential for model-based control methodologies which allow smart buildings to operate autonomously in an energy and cost efficient manner. However, buildings have complex thermal dynamics which are affected externally by the environment and internally by thermal loads such as equipment and occupancy. Moreover, the physical parameters of buildings may change over time as the buildings age or due to changes in the buildings’ configuration or structure. In this paper, we introduce an online model learning methodology to identify a nonparametric dynamical model for buildings when the thermal load is latent (i.e., the thermal load cannot be measured. The proposed model is based on stochastic hybrid systems, where the discrete state describes the level of the thermal load and the continuous dynamics represented by Gaussian processes describe the thermal dynamics of the air temperature. We demonstrate the evaluation of the proposed model using two-zone and five-zone buildings. The data for both experiments are generated using the EnergyPlus software. Experimental results show that the proposed model estimates the thermal load level correctly and predicts the thermal behavior with good performance.

  5. Online learning management systems (LMS and sense of community: A pre-service practicum perspective

    Directory of Open Access Journals (Sweden)

    Glenn Rideout

    2008-05-01

    Full Text Available This paper examines the impact of the implementation of an online learning management system (LMS on pre-service teachers during their major pre-service practicum. The LMS enabled students to remain connected to peers, professors, and supervisors while new relationships were formed with in-school personnel such as mentor teachers, principals, and students. The quantitative data analysis revealed that pre-service teachers perceived a higher sense of community when it included pre-service teachers only than when it included teaching faculty and part-time practicum supervisors. The online LMS was identified as the best predictor of a sense of community among pre-service teachers, when compared to other variables, and not a significant predictor when community included part-time practicum supervisors. The paper concludes with an examination of the perspectives of provincial Ministries of Education and Teachers Federations in relation to the role and evaluation of educational technology initiatives. Résumé: Cet article examine l’impact de l’implantation d’une plateforme eLearning (LMS sur de futurs enseignants en stage. La plateforme a permis aux étudiants de rester en contact avec leurs pairs, leur professeurs et leurs superviseurs, alors que de nouvelles relations se formaient avec la collectivité de l’école les accueillant pour leur stage (mentor, directeur d’école et élèves. L’analyse des données quantitatives a révélé que les futurs enseignants percevaient un meilleur esprit communautaire quand seuls les futurs enseignants en faisaient partie par opposition à une communauté composée des futurs enseignants, des professeurs de leur programme et les superviseurs à temps partiel de leur stage. La plateforme LMS a été identifiée comme le meilleur prédicteur de l’esprit communautaire chez les futurs enseignants par comparaison avec d’autres variables, et un prédicteur non significatif quand la communauté incluait

  6. Online Supplementary ADP Learning Controller Design and Application to Power System Frequency Control With Large-Scale Wind Energy Integration.

    Science.gov (United States)

    Guo, Wentao; Liu, Feng; Si, Jennie; He, Dawei; Harley, Ronald; Mei, Shengwei

    2016-08-01

    The emergence of smart grids has posed great challenges to traditional power system control given the multitude of new risk factors. This paper proposes an online supplementary learning controller (OSLC) design method to compensate the traditional power system controllers for coping with the dynamic power grid. The proposed OSLC is a supplementary controller based on approximate dynamic programming, which works alongside an existing power system controller. By introducing an action-dependent cost function as the optimization objective, the proposed OSLC is a nonidentifier-based method to provide an online optimal control adaptively as measurement data become available. The online learning of the OSLC enjoys the policy-search efficiency during policy iteration and the data efficiency of the least squares method. For the proposed OSLC, the stability of the controlled system during learning, the monotonic nature of the performance measure of the iterative supplementary controller, and the convergence of the iterative supplementary controller are proved. Furthermore, the efficacy of the proposed OSLC is demonstrated in a challenging power system frequency control problem in the presence of high penetration of wind generation.

  7. On-line condition monitoring systems for high voltage circuit breakers : a collaborative research project 1997-2001

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-07-01

    A three year field project was initiated to review and evaluate the state of the art in on-line conditioning monitoring technology for a high voltage (240 kV SF6) circuit breaker located at Dorsey Converter Station. The ELF breaker is a three independent pole design which allows for three separate monitoring systems. This project involved the installation of a different type of monitoring system on each phase and incorporated many types of transducers. Each monitoring system measured the same basic parameters including contact travel, 'a' and 'b' auxiliary contacts, phase currents, coil currents, heater and pump current, plus SF6/CF4 pressure and temperature. Over the entire monitoring period the breaker was operated over 700 times at rated voltage and an additional 300 times during maintenance. Temperature conditions ranged from -35 to +30 degrees C. The use of on-line monitoring provided many valuable results and enhanced the knowledge base for the apparatus under the test. It was determined that on-line monitoring of HV circuit breakers has potential, but installation has to be considered carefully. Monitoring systems can offer improvement in the understanding of how circuit breakers work and provide input into RCM programs. However, monitoring systems themselves are subject to failure and require maintenance and attention. 2 refs., 2 tabs., 7 figs.

  8. EPA Enforcement and Compliance History Online: Legacy System Clean Air Act Data Set (ZIP)

    Data.gov (United States)

    U.S. Environmental Protection Agency — The Enforcement and Compliance History Online (ECHO) data sets have been compiled for access to larger sets of national data to ensure that ECHO meets your data...

  9. Anomaly-based online intrusion detection system as a sensor for cyber security situational awareness system

    OpenAIRE

    Kokkonen, Tero

    2016-01-01

    Almost all the organisations and even individuals rely on complex structures of data networks and networked computer systems. That complex data ensemble, the cyber domain, provides great opportunities, but at the same time it offers many possible attack vectors that can be abused for cyber vandalism, cyber crime, cyber espionage or cyber terrorism. Those threats produce requirements for cyber security situational awareness and intrusion detection capability. This dissertation conc...

  10. Coupling a regional warning system to a semantic engine on online news for enhancing landslide prediction

    Science.gov (United States)

    Battistini, Alessandro; Rosi, Ascanio; Segoni, Samuele; Catani, Filippo; Casagli, Nicola

    2017-04-01

    Landslide inventories are basic data for large scale landslide modelling, e.g. they are needed to calibrate and validate rainfall thresholds, physically based models and early warning systems. The setting up of landslide inventories with traditional methods (e.g. remote sensing, field surveys and manual retrieval of data from technical reports and local newspapers) is time consuming. The objective of this work is to automatically set up a landslide inventory using a state-of-the art semantic engine based on data mining on online news (Battistini et al., 2013) and to evaluate if the automatically generated inventory can be used to validate a regional scale landslide warning system based on rainfall-thresholds. The semantic engine scanned internet news in real time in a 50 months test period. At the end of the process, an inventory of approximately 900 landslides was set up for the Tuscany region (23,000 km2, Italy). The inventory was compared with the outputs of the regional landslide early warning system based on rainfall thresholds, and a good correspondence was found: e.g. 84% of the events reported in the news is correctly identified by the model. In addition, the cases of not correspondence were forwarded to the rainfall threshold developers, which used these inputs to update some of the thresholds. On the basis of the results obtained, we conclude that automatic validation of landslide models using geolocalized landslide events feedback is possible. The source of data for validation can be obtained directly from the internet channel using an appropriate semantic engine. We also automated the validation procedure, which is based on a comparison between forecasts and reported events. We verified that our approach can be automatically used for a near real time validation of the warning system and for a semi-automatic update of the rainfall thresholds, which could lead to an improvement of the forecasting effectiveness of the warning system. In the near future

  11. On-line Multiple-model Based Adaptive Control Reconfiguration for a Class of Non-linear Control Systems

    DEFF Research Database (Denmark)

    Yang, Z.; Izadi-Zamanabadi, Roozbeh; Blanke, M.

    2000-01-01

    Based on the model-matching strategy, an adaptive control reconfiguration method for a class of nonlinear control systems is proposed by using the multiple-model scheme. Instead of requiring the nominal and faulty nonlinear systems to match each other directly in some proper sense, three sets...... of LTI models are employed to approximate the faulty, reconfigured and nominal nonlinear systems respectively with respect to the on-line information of the operating system, and a set of compensating modules are proposed and designed so as to make the local LTI model approximating to the reconfigured...

  12. Analysis of Learning Behavior in Problem-Solving-Based and Project-Based Discussion Activities within the Seamless Online Learning Integrated Discussion (SOLID) System

    Science.gov (United States)

    Wu, Sheng-Yi; Hou, Huei-Tse; Hwang, Wu-Yuin; Liu, Eric Zhi-Feng

    2013-01-01

    Both asynchronous and synchronous discussions have advantages and limitations for online learning. This study conducts an empirical analysis of these discussion activities while applying the proposed Seamless Online Learning Integrated Discussion (SOLID) system, which can instantly integrate Facebook's asynchronous discussion function with the MSN…

  13. Wiris Quizzes: a continuous assessment system with automatic feedback for online mathematics

    Directory of Open Access Journals (Sweden)

    Remei Calm

    2013-08-01

    Full Text Available 0 0 1 148 815 USAL 6 1 962 14.0 Normal 0 21 false false false ES JA X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Tabla normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin-top:0cm; mso-para-margin-right:0cm; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0cm; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:Calibri; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-ansi-language:ES; mso-fareast-language:EN-US;} In online engineering studies, the monitoring of the learning process as well as the assessment system are key aspects of teaching strategy. This paper examines a continuous assessment system with automatic feedback. It is based on Wiris Quizzes taken over the semester in a Mathematical Analysis course at the Open University of Catalonia. These tests, with parameterized statements, are completed in the Moodle environment with the symbolic calculator program Wiris (www.wiris.com. The results of the teaching experience in a virtual classroom with 65 students and the comparison with earlier semesters are clearly positive: (a the number of students who follow continuous assessment remains stable; (b the average of the continuous assessment marks increases considerably; (c the number of students who fail has been reduced significantly, and (d the satisfaction level of students regarding the subject, its contents and resources has improved notably.

  14. Effects of a Passive Online Software Application on Heart Rate Variability and Autonomic Nervous System Balance.

    Science.gov (United States)

    Rubik, Beverly

    2017-01-01

    This study investigated whether short-term exposure to a passive online software application of purported subtle energy technology would affect heart rate variability (HRV) and associated autonomic nervous system measures. This was a randomized, double-blinded, sham-controlled clinical trial (RCT). The study took place in a nonprofit laboratory in Emeryville, California. Twenty healthy, nonsmoking subjects (16 females), aged 40-75 years, participated. Quantum Code Technology(™) (QCT), a purported subtle energy technology, was delivered through a passive software application (Heart+ App) on a smartphone placed heart rate, total power, standard deviation node-to-node, root mean square sequential difference, low frequency to high frequency ratio (LF/HF), low frequency (LF), and high frequency (HF). Paired samples t-tests showed that for the Heart+ App, mean LF/HF decreased (p = 9.5 × 10(-4)), while mean LF decreased in a trend (p = 0.06), indicating reduced sympathetic dominance. Root mean square sequential difference increased for the Heart+ App, showing a possible trend (p = 0.09). Post-pre differences in LF/HF for sham compared with the Heart+ App were also significant (p Heart+ App that was working in the background on an active smartphone untouched by the subjects. This may be the first RCT to show that specific frequencies of a purported non-Hertzian type of subtle energy conveyed by software applications broadcast from personal electronic devices can be bioactive and beneficially impact autonomic nervous system balance.

  15. Content Delivery in Fog-Aided Small-Cell Systems with Offline and Online Caching: An Information—Theoretic Analysis

    Directory of Open Access Journals (Sweden)

    Seyyed Mohammadreza Azimi

    2017-07-01

    Full Text Available The storage of frequently requested multimedia content at small-cell base stations (BSs can reduce the load of macro-BSs without relying on high-speed backhaul links. In this work, the optimal operation of a system consisting of a cache-aided small-cell BS and a macro-BS is investigated for both offline and online caching settings. In particular, a binary fading one-sided interference channel is considered in which the small-cell BS, whose transmission is interfered by the macro-BS, has a limited-capacity cache. The delivery time per bit (DTB is adopted as a measure of the coding latency, that is, the duration of the transmission block, required for reliable delivery. For offline caching, assuming a static set of popular contents, the minimum achievable DTB is characterized through information-theoretic achievability and converse arguments as a function of the cache capacity and of the capacity of the backhaul link connecting cloud and small-cell BS. For online caching, under a time-varying set of popular contents, the long-term (average DTB is evaluated for both proactive and reactive caching policies. Furthermore, a converse argument is developed to characterize the minimum achievable long-term DTB for online caching in terms of the minimum achievable DTB for offline caching. The performance of both online and offline caching is finally compared using numerical results.

  16. Online colour training system for dental students: a comprehensive assessment of different training protocols.

    Science.gov (United States)

    Liu, M; Chen, L; Liu, X; Yang, Y; Zheng, M; Tan, J

    2015-04-01

    The purpose of this study was to evaluate the training effect and to determine the optimal training protocol for a recently developed online colour training system. Seventy students participated in the evaluation. They first completed a baseline test with shade guides (SGT) and the training system (TST), and then trained with one of the three system training methods (Basic colour training for group E1, Vitapan Classical for E2, and Vitapan 3D-Master for E3) or shade guides (group C1) for 4 days. The control group (C2) received no training. The same test was performed after training and they finally completed a questionnaire. The correct matches after training increased in three experimental groups and group C1. Among experimental groups, the greatest improvement of correct matching number was achieved by group E3 (4·00 ± 1·88 in SGT, 4·29 ± 2·73 in TST), followed by E2 (2·29 ± 2·73 in SGT, 3·50 ± 3·03 in TST) and E1 (2·00 ± 2·60 in SGT, 1·93 ± 2·96 in TST). The difference between E3 and E1 was statistically significant (P = 0·036 in SGT, 0·026 in TST). The total average training time was shorter in group E2 (15·39 ± 4·22 min) and E3 (17·63 ± 5·22 min), with no significant difference between them. Subjective evaluations revealed that self-confidence in colour matching were improved greater in group C1 and E3. In conclusion, all tested sections of the system effectively improved students' colour-matching ability. Among system training methods, Vitapan 3D-Master showed the best performance; it enabled greater shade-matching improvement, it saved time and was superior in subjective evaluations. © 2014 John Wiley & Sons Ltd.

  17. Online Doppler Effect Elimination Based on Unequal Time Interval Sampling for Wayside Acoustic Bearing Fault Detecting System.

    Science.gov (United States)

    Ouyang, Kesai; Lu, Siliang; Zhang, Shangbin; Zhang, Haibin; He, Qingbo; Kong, Fanrang

    2015-08-27

    The railway occupies a fairly important position in transportation due to its high speed and strong transportation capability. As a consequence, it is a key issue to guarantee continuous running and transportation safety of trains. Meanwhile, time consumption of the diagnosis procedure is of extreme importance for the detecting system. However, most of the current adopted techniques in the wayside acoustic defective bearing detector system (ADBD) are offline strategies, which means that the signal is analyzed after the sampling process. This would result in unavoidable time latency. Besides, the acquired acoustic signal would be corrupted by the Doppler effect because of high relative speed between the train and the data acquisition system (DAS). Thus, it is difficult to effectively diagnose the bearing defects immediately. In this paper, a new strategy called online Doppler effect elimination (ODEE) is proposed to remove the Doppler distortion online by the introduced unequal interval sampling scheme. The steps of proposed strategy are as follows: The essential parameters are acquired in advance. Then, the introduced unequal time interval sampling strategy is used to restore the Doppler distortion signal, and the amplitude of the signal is demodulated as well. Thus, the restored Doppler-free signal is obtained online. The proposed ODEE method has been employed in simulation analysis. Ultimately, the ODEE method is implemented in the embedded system for fault diagnosis of the train bearing. The results are in good accordance with the bearing defects, which verifies the good performance of the proposed strategy.

  18. Online Doppler Effect Elimination Based on Unequal Time Interval Sampling for Wayside Acoustic Bearing Fault Detecting System

    Directory of Open Access Journals (Sweden)

    Kesai Ouyang

    2015-08-01

    Full Text Available The railway occupies a fairly important position in transportation due to its high speed and strong transportation capability. As a consequence, it is a key issue to guarantee continuous running and transportation safety of trains. Meanwhile, time consumption of the diagnosis procedure is of extreme importance for the detecting system. However, most of the current adopted techniques in the wayside acoustic defective bearing detector system (ADBD are offline strategies, which means that the signal is analyzed after the sampling process. This would result in unavoidable time latency. Besides, the acquired acoustic signal would be corrupted by the Doppler effect because of high relative speed between the train and the data acquisition system (DAS. Thus, it is difficult to effectively diagnose the bearing defects immediately. In this paper, a new strategy called online Doppler effect elimination (ODEE is proposed to remove the Doppler distortion online by the introduced unequal interval sampling scheme. The steps of proposed strategy are as follows: The essential parameters are acquired in advance. Then, the introduced unequal time interval sampling strategy is used to restore the Doppler distortion signal, and the amplitude of the signal is demodulated as well. Thus, the restored Doppler-free signal is obtained online. The proposed ODEE method has been employed in simulation analysis. Ultimately, the ODEE method is implemented in the embedded system for fault diagnosis of the train bearing. The results are in good accordance with the bearing defects, which verifies the good performance of the proposed strategy.

  19. On-line transient stability assessment of large-scale power systems by using ball vector machines

    Energy Technology Data Exchange (ETDEWEB)

    Mohammadi, M., E-mail: m.mohammadi@aut.ac.i [School of Electrical and Computer Engineering, Shiraz University, Shiraz (Iran, Islamic Republic of); Gharehpetian, G.B., E-mail: grptian@aut.ac.i [Electrical Engineering Department, Amirkabir University of Technology, Tehran (Iran, Islamic Republic of)

    2010-04-15

    In this paper ball vector machine (BVM) has been used for on-line transient stability assessment of large-scale power systems. To classify the system transient security status, a BVM has been trained for all contingencies. The proposed BVM based security assessment algorithm has very small training time and space in comparison with artificial neural networks (ANN), support vector machines (SVM) and other machine learning based algorithms. In addition, the proposed algorithm has less support vectors (SV) and therefore is faster than existing algorithms for on-line applications. One of the main points, to apply a machine learning method is feature selection. In this paper, a new Decision Tree (DT) based feature selection technique has been presented. The proposed BVM based algorithm has been applied to New England 39-bus power system. The simulation results show the effectiveness and the stability of the proposed method for on-line transient stability assessment procedure of large-scale power system. The proposed feature selection algorithm has been compared with different feature selection algorithms. The simulation results demonstrate the effectiveness of the proposed feature algorithm.

  20. Mode system effects in an online panel study : Comparing a probability-based online panel with two face-to-face reference surveys

    NARCIS (Netherlands)

    de Leeuw, E.D.|info:eu-repo/dai/nl/073351385; Struminskaya, Bella; Kaczmirek, Lars

    2015-01-01

    One of the methods for evaluating online panels in terms of data quality is comparing the estimates that the panels provide with benchmark sources. For probability-based online panels, high-quality surveys or government statistics can be used as references. If differences among the benchmark and the

  1. A multisyringe flow-through sequential extraction system for on-line monitoring of orthophosphate in soils and sediments

    DEFF Research Database (Denmark)

    Buanuam, Janya; Miró, Manuel; Hansen, Elo Harald

    2007-01-01

    A fully automated flow-through microcolumn fractionation system with on-line post-extraction derivatization is proposed for monitoring of orthophosphate in solid samples of environmental relevance. The system integrates dynamic sequential extraction using 1.0 mol l-1 NH4Cl, 0.1 mol l-1 NaOH and 0.......5 mol l-1 HCl as extractants according to the Hietjles-Lijklema (HL) scheme for fractionation of phosphorus associated with different geological phases, and on-line processing of the extracts via the Molybdenum Blue (MB) reaction by exploiting multisyringe flow injection as the interface between...... the solid containing microcolumn and the flow-through detector. The proposed flow assembly, capitalizing on the features of the multicommutation concept, implies several advantages as compared to fractionation analysis in the batch mode in terms of saving of extractants and MB reagents, shortening...

  2. On-Line Real-Time Management Information Systems and Their Impact Upon User Personnel and Organizational Structure in Aviation Maintenance Activities.

    Science.gov (United States)

    1979-12-01

    AD-AO85 III NAVAL POSTGRADUATE SCHOOL MONTEREY CA F/6 15/7 ON-LINE REAL- TIME MANAGEMENT INFORMATION SYSTEMS AND THEIR IMPA--ETC(U) UNCLASSIIED N...34&’ 1111CIPENT’S CAT ALOG NUMS9m 14. TITLE (11141 ANIN~e. ON-LINE REAL- TIME MANAGEMENT INFORMATION Master’s Thesis SYSTEMS AND THEIR IMPACT UPON USER PER- p...9.GOO*g e,ft Or too#$ pasemabin. &-we. Approved for Public Release; Ditribution Unlimited ON-LINE REAL- TIME MANAGEMENT INFORMATION SYSTEMS AND THEIR

  3. Online vs. In-Store Shopping : How Problem Solving Strategies of Decision Support Systems Influence Confidence in Purchase Decisions

    OpenAIRE

    Kowatsch, Tobias; Maass, Wolfgang

    2010-01-01

    Several studies have investigated the relevance of Decision Support Systems (DSS) on purchase behaviour. Even though these studies show several aspects of the utility of DSS, they are limited to online purchase situations, the use of one DSS strategy and one DSS technology. In this paper, we therefore develop a theoretical model that measures the impact of DSS strategies relative to a given purchase problem and an adequate use of DSS technology on consumers' perceived confidence in purchase d...

  4. Framework for Structural Online Health Monitoring of Aging and Degradation of Secondary Systems due to some Aspects of Erosion

    Energy Technology Data Exchange (ETDEWEB)

    Gribok, Andrei [Idaho National Lab. (INL), Idaho Falls, ID (United States); Patnaik, Sobhan [Idaho National Lab. (INL), Idaho Falls, ID (United States); Williams, Christian [Idaho National Lab. (INL), Idaho Falls, ID (United States); Pattanaik, Marut [Idaho National Lab. (INL), Idaho Falls, ID (United States); Kanakala, Raghunath [Idaho National Lab. (INL), Idaho Falls, ID (United States)

    2016-09-01

    This report describes the current state of research related to critical aspects of erosion and selected aspects of degradation of secondary components in nuclear power plants. The report also proposes a framework for online health monitoring of aging and degradation of secondary components. The framework consists of an integrated multi-sensor modality system which can be used to monitor different piping configurations under different degradation conditions. The report analyses the currently known degradation mechanisms and available predictive models. Based on this analysis, the structural health monitoring framework is proposed. The Light Water Reactor Sustainability Program began to evaluate technologies that could be used to perform online monitoring of piping and other secondary system structural components in commercial NPPs. These online monitoring systems have the potential to identify when a more detailed inspection is needed using real-time measurements, rather than at a pre-determined inspection interval. This transition to condition-based, risk informed automated maintenance will contribute to a significant reduction of operations and maintenance costs that account for the majority of nuclear power generation costs. There is unanimous agreement between industry experts and academic researchers that identifying and prioritizing inspection locations in secondary piping systems (for example, in raw water piping or diesel piping) would eliminate many excessive in-service inspections. The proposed structural health monitoring framework takes aim at answering this challenge by combining long-range guided wave technologies with other monitoring techniques, which can significantly increase the inspection length and pinpoint the locations that degraded the most. More widely, the report suggests research efforts aimed at developing, validating, and deploying online corrosion monitoring techniques for complex geometries, which are pervasive in NPPs.

  5. A realtime, online automated system for measurement of Phosphate ions in atmospheric particles

    Science.gov (United States)

    Violaki, Kalliopi; Fang, Ting; Mihalopoulos, Nikos; Weber, Rodney James; Nenes, Athanasios

    2016-04-01

    Primary productivity of continental and marine ecosystems is often limited or co-limited by phosphorus. Of particular interest is the role of phosphorus in marine primary productivity, owing to its potential for affecting the concentration of atmospheric carbon dioxide. The atmosphere is considered a principal source of externally-supplied nutrients for large areas of the surface ocean, and oligotrophic open oceans in particular. Atmospheric inorganic P species (e.g. mono- or diprotonated orthophosphate) comprise the most bioavailable P form, and have been studied for many decades. Nevertheless, there are very large uncertainties in the phosphate biogeochemical budget due to the lack of observations and the poor match of the model to observations. This study presents a novel automated on-line, real-time analytical method for the analysis of water-soluble PO4-3 ions in atmospheric particles. The instrumentation consists of a particle-into-liquid sampler (PILS) coupled with a reaction coil to allow reagents to interact with the PILS liquid flow; the composite flow is then introduced into a mini spectrophotometer, which is equipped with a long path length of 250cm Liquid Wavequide Capillary Cell (LWCC), achieving low detection limit. This new system overcomes the limitations on detection and time resolution, as the configuration presented allows for measurement with 8 minute resolution. The data, when combined with routine PILS-IC or aerosol mass spectrometry, allows for an unprecedented insight towards the drivers of phosphate solubility and its relation to acidification from atmospheric acids. We present results for concentration of PM2.5 PO4-3 in Atlanta Georgia for a 2 month period (February-March, 2015) and the Eastern Mediterranean and its relation to aerosol acidity and other meteorological parameters. The results are discussed together with future directions towards optimized performance during long periods of operation.

  6. Using a participatory evaluation design to create an online data collection and monitoring system for New Mexico's Community Health Councils.

    Science.gov (United States)

    Andrews, M L; Sánchez, V; Carrillo, C; Allen-Ananins, B; Cruz, Y B

    2014-02-01

    We present the collaborative development of a web-based data collection and monitoring plan for thirty-two county councils within New Mexico's health council system. The monitoring plan, a key component in our multiyear participatory statewide evaluation process, was co-developed with the end users: representatives of the health councils. Guided by the Institute of Medicine's Community, Health Improvement Process framework, we first developed a logic model that delineated processes and intermediate systems-level outcomes in council development, planning, and community action. Through the online system, health councils reported data on intermediate outcomes, including policy changes and funds leveraged. The system captured data that were common across the health council system, yet was also flexible so that councils could report their unique accomplishments at the county level. A main benefit of the online system was that it provided the ability to assess intermediate, outcomes across the health council system. Developing the system was not without challenges, including creating processes to ensure participation across a large rural state; creating shared understanding of intermediate outcomes and indicators; and overcoming technological issues. Even through the challenges, however, the benefits of committing to using participatory processes far outweighed the challenges. Copyright © 2013 Elsevier Ltd. All rights reserved.

  7. The 1-way on-line coupled atmospheric chemistry model system MECO(n – Part 2: On-line coupling with the Multi-Model-Driver (MMD

    Directory of Open Access Journals (Sweden)

    A. Kerkweg

    2012-01-01

    Full Text Available A new, highly flexible model system for the seamless dynamical down-scaling of meteorological and chemical processes from the global to the meso-γ scale is presented. A global model and a cascade of an arbitrary number of limited-area model instances run concurrently in the same parallel environment, in which the coarser grained instances provide the boundary data for the finer grained instances. Thus, disk-space intensive and time consuming intermediate and pre-processing steps are entirely avoided and the time interpolation errors of common off-line nesting approaches are minimised. More specifically, the regional model COSMO of the German Weather Service (DWD is nested on-line into the atmospheric general circulation model ECHAM5 within the Modular Earth Submodel System (MESSy framework. ECHAM5 and COSMO have previously been equipped with the MESSy infrastructure, implying that the same process formulations (MESSy submodels are available for both models. This guarantees the highest degree of achievable consistency, between both, the meteorological and chemical conditions at the domain boundaries of the nested limited-area model, and between the process formulations on all scales.

    The on-line nesting of the different models is established by a client-server approach with the newly developed Multi-Model-Driver (MMD, an additional component of the MESSy infrastructure. With MMD an arbitrary number of model instances can be run concurrently within the same message passing interface (MPI environment, the respective coarser model (either global or regional is the server for the nested finer (regional client model, i.e. it provides the data required to calculate the initial and boundary fields to the client model. On-line nesting means that the coupled (client-server models exchange their data via the computer memory, in contrast to the data exchange via files on disk in common off-line nesting approaches. MMD consists of a library

  8. The 1-way on-line coupled atmospheric chemistry model system MECO(n – Part 2: On-line coupling

    Directory of Open Access Journals (Sweden)

    A. Kerkweg

    2011-06-01

    Full Text Available A new, highly flexible model system for the seamless dynamical down-scaling of meteorological and chemical processes from the global to the meso-γ scale is presented. A global model and a cascade of an arbitrary number of limited-area model instances run concurrently in the same parallel environment, in which the coarser grained instances provide the boundary data for the finer grained instances. Thus, disk-space intensive and time consuming intermediate and pre-processing steps are entirely avoided and the time interpolation errors of common off-line nesting approaches are minimised. More specifically, the regional model COSMO of the German Weather Service (DWD is nested on-line into the atmospheric general circulation model ECHAM5 within the Modular Earth Submodel System (MESSy framework. ECHAM5 and COSMO have previously been equipped with the MESSy infrastructure, implying that the same process formulations (MESSy submodels are available for both models. This guarantees the highest degree of achievable consistency, between both, the meteorological and chemical conditions at the domain boundaries of the nested limited-area model, and between the process formulations on all scales.

    The on-line nesting of the different models is established by a client-server approach with the newly developed Multi-Model-Driver (MMD, an additional component of the MESSy infrastructure. With MMD an arbitrary number of model instances can be run concurrently within the same message passing interface (MPI environment, the respective coarser model (either global or regional is the server for the nested finer (regional client model, i.e., it provides the data required to calculate the initial and boundary fields to the client model. On-line nesting means that the coupled (client-server models exchange their data via the computer memory, in contrast to the data exchange via files on disk in common off-line nesting approaches. MMD consists of a library

  9. ONLINE SALE SYSTEMS: AN ANALYSIS OF THEIR CRITICAL FACTORS FOR SMALL BUSINESS

    Directory of Open Access Journals (Sweden)

    Jordi Vilaseca Requena

    2007-05-01

    Full Text Available This work contributes to a general vision on the process of development of online sale of small business, such as final consumers oriented as well as to other organizations. The data presented were obtained through a survey with owners and top executives of 803 companies with less than 100 workers who carry out commercial distribution activities in Spain. The results show the diversity of critical factors (relative to the environment and the characteristics of the organization and their executives which influences in the implementation of online sale and in the importance that it reach as distribution channel, as well as their degree of contribution to both phenomena.

  10. Application of ODI in Massive Online Learning System Management%ODI在大规模在线教学管理中的应用

    Institute of Scientific and Technical Information of China (English)

    玄祖广; 王小霞; 徐晓辉; 张海

    2015-01-01

    In this paper, we studied the the lower usage of massive online learning system. Based on Moodle platform, this paper discussed the application of ODI in solving massive online learning platform and educational management system in data inconsistency. Firstly , this paper analyzed the problems faced by the online learning platform, and presented four inconsistencies between massive online learning system and educational management system, through the analysis of differences between systems. Data interfaces were created by ODI, thus it can solve the inconsistency between the massive online learning system and educational management system, and improve the usage of massive online learning system.%文章分析了大规模在线教学平台在日常应用中出现的问题和造成这些问题的原因,通过ODI在大规模在线教学平台和教务管理系统之间建立数据接口,解决了教学平台与教务管理系统之间的身份一致性、任务一致性、选课一致性和成绩一致性问题,从而提高了教师使用在线教学平台的积极性,提高了在线教学平台的使用率。

  11. Development of an online radiology case review system featuring interactive navigation of volumetric image datasets using advanced visualization techniques

    Energy Technology Data Exchange (ETDEWEB)

    Yang, Hyun Kyung; Kim, Boh Kyoung; Jung, Ju Hyun; Kang, Heung Sik; Lee, Kyoung Ho [Dept. of Radiology, Seoul National University Bundang Hospital, Seongnam (Korea, Republic of); Woo, Hyun Soo [Dept. of Radiology, SMG-SNU Boramae Medical Center, Seoul (Korea, Republic of); Jo, Jae Min [Dept. of Computer Science and Engineering, Seoul National University, Seoul (Korea, Republic of); Lee, Min Hee [Dept. of Radiology, Soonchunhyang University Bucheon Hospital, Bucheon (Korea, Republic of)

    2015-11-15

    To develop an online radiology case review system that allows interactive navigation of volumetric image datasets using advanced visualization techniques. Our Institutional Review Board approved the use of the patient data and waived the need for informed consent. We determined the following system requirements: volumetric navigation, accessibility, scalability, undemanding case management, trainee encouragement, and simulation of a busy practice. The system comprised a case registry server, client case review program, and commercially available cloud-based image viewing system. In the pilot test, we used 30 cases of low-dose abdomen computed tomography for the diagnosis of acute appendicitis. In each case, a trainee was required to navigate through the images and submit answers to the case questions. The trainee was then given the correct answers and key images, as well as the image dataset with annotations on the appendix. After evaluation of all cases, the system displayed the diagnostic accuracy and average review time, and the trainee was asked to reassess the failed cases. The pilot system was deployed successfully in a hands-on workshop course. We developed an online radiology case review system that allows interactive navigation of volumetric image datasets using advanced visualization techniques.

  12. Markov Decision Process Based Energy-Efficient On-Line Scheduling for Slice-Parallel Video Decoders on Multicore Systems

    CERN Document Server

    Mastronarde, Nicholas; Atienza, David; Frossard, Pascal; van der Schaar, Mihaela

    2011-01-01

    We consider the problem of energy-efficient on-line scheduling for slice-parallel video decoders on multicore systems. We assume that each of the processors are Dynamic Voltage Frequency Scaling (DVFS) enabled such that they can independently trade off performance for power, while taking the video decoding workload into account. In the past, scheduling and DVFS policies in multi-core systems have been formulated heuristically due to the inherent complexity of the on-line multicore scheduling problem. The key contribution of this report is that we rigorously formulate the problem as a Markov decision process (MDP), which simultaneously takes into account the on-line scheduling and per-core DVFS capabilities; the separate power consumption of the processor cores and caches; and the loss tolerant and dynamic nature of the video decoder's traffic. In particular, we model the video traffic using a Direct Acyclic Graph (DAG) to capture the precedence constraints among frames in a Group of Pictures (GOP) structure, ...

  13. Online Gaming

    Directory of Open Access Journals (Sweden)

    Kevin Curran

    2005-01-01

    Full Text Available Computer gaming is a medium by which we can entertain ourselves, a medium that has expanded to the online worldwide market as part as globalization. The growth of online gaming has close ties with the use of broadband, as a good online gaming experience requires a broadband connection. Through online gaming, people can play and communicate with each other freely in almost any country, at any given time. This paper examines the phenomenon of online gaming.

  14. Effects of a Passive Online Software Application on Heart Rate Variability and Autonomic Nervous System Balance

    Science.gov (United States)

    2017-01-01

    Abstract Objective: This study investigated whether short-term exposure to a passive online software application of purported subtle energy technology would affect heart rate variability (HRV) and associated autonomic nervous system measures. Methods: This was a randomized, double-blinded, sham-controlled clinical trial (RCT). The study took place in a nonprofit laboratory in Emeryville, California. Twenty healthy, nonsmoking subjects (16 females), aged 40–75 years, participated. Quantum Code Technology™ (QCT), a purported subtle energy technology, was delivered through a passive software application (Heart+ App) on a smartphone placed <1 m from subjects who were seated and reading a catalog. HRV was measured for 5 min in triplicate for each condition via finger plethysmography using a Food and Drug Administration medically approved HRV measurement device. Measurements were made at baseline and 35 min following exposure to the software applications. The following parameters were calculated and analyzed: heart rate, total power, standard deviation node-to-node, root mean square sequential difference, low frequency to high frequency ratio (LF/HF), low frequency (LF), and high frequency (HF). Results: Paired samples t-tests showed that for the Heart+ App, mean LF/HF decreased (p = 9.5 × 10–4), while mean LF decreased in a trend (p = 0.06), indicating reduced sympathetic dominance. Root mean square sequential difference increased for the Heart+ App, showing a possible trend (p = 0.09). Post–pre differences in LF/HF for sham compared with the Heart+ App were also significant (p < 0.008) by independent t-test, indicating clinical relevance. Conclusions: Significant beneficial changes in mean LF/HF, along with possible trends in mean LF and root mean square sequential difference, were observed in subjects following 35 min exposure to the Heart+ App that was working in the background on an active smartphone untouched by the subjects

  15. Development of and feedback on a fully automated virtual reality system for online training in weight management skills.

    Science.gov (United States)

    Thomas, J Graham; Spitalnick, Josh S; Hadley, Wendy; Bond, Dale S; Wing, Rena R

    2015-01-01

    Virtual reality (VR) technology can provide a safe environment for observing, learning, and practicing use of behavioral weight management skills, which could be particularly useful in enhancing minimal contact online weight management programs. The Experience Success (ES) project developed a system for creating and deploying VR scenarios for online weight management skills training. Virtual environments populated with virtual actors allow users to experiment with implementing behavioral skills via a PC-based point and click interface. A culturally sensitive virtual coach guides the experience, including planning for real-world skill use. Thirty-seven overweight/obese women provided feedback on a test scenario focused on social eating situations. They reported that the scenario gave them greater skills, confidence, and commitment for controlling eating in social situations.

  16. Promoting Assessment Efficacy through an Integrated System for Online Clinical Assessment of Practical Skills

    Science.gov (United States)

    Hay, Peter J.; Engstrom, Craig; Green, Anita; Friis, Peter; Dickens, Sue; Macdonald, Doune

    2013-01-01

    This paper presents evaluation outcomes from an externally funded research project involving the online clinical assessment of practical skills (eCAPS) using web-based video technologies within a university medical programme. eCAPS was implemented to trial this web-based approach for promoting the efficacy of "practical" skills assessment in knee…

  17. An on-line automated sleep-wake classification system for laboratory animals

    NARCIS (Netherlands)

    Witting, W; vanderWerf, D; Mirmiran, M

    1996-01-01

    A computerized sleep-wake classification program is presented that is capable of classifying sleep-wake states on-line in four animals simultaneously. Every 10 s the classification algorithm assigns sleep-wake states on the basis of the power spectrum of an EEG signal and the standard deviation of a

  18. Online Document Retrieval System Education for Undergraduates: Rationale, Content and Observations.

    Science.gov (United States)

    Lowry, Glenn R.

    This report describes the conceptual content and hands-on activities of a course in online information retrieval skills offered at Stockton State College to expose undergraduate students to an important area of information science not traditionally included in undergraduate computer science curricula. Observations of student experience with the…

  19. Online grid impedance estimation for single-phase grid-connected systems using PQ variations

    DEFF Research Database (Denmark)

    Ciobotaru, Mihai; Teodorescu, Remus; Rodriguez, Pedro;

    2007-01-01

    algorithms are used in order to estimate the value of the grid impedance. The online grid impedance estimation method can be used for compliance with the anti-islanding standard requirements (IEEE1574, IEEE929 and VDE0126) and for adaptive control of the grid-connected converters. The proposed method...

  20. Design of an online charging system to support IMS-based inter-domain composite services

    NARCIS (Netherlands)

    Le, M. van; Huitema, G.B.; Rumph, F.J.; Nieuwenhuis, L.J.M.; Beijnum, B.J.F. van

    2009-01-01

    For service providers online charging of composite services is necessary in order to manage financial risks of service delivery in multi-domain environments. At service level, inter-domain composite services consist of one or more service components, e.g. access service, IMS communication service or