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Sample records for sa system continuous

  1. Performance Evaluation Considering Iterations per Phase and SA Temperature in WMN-SA System

    Directory of Open Access Journals (Sweden)

    Shinji Sakamoto

    2014-01-01

    Full Text Available One of the key advantages of Wireless Mesh Networks (WMNs is their importance for providing cost-efficient broadband connectivity. There are issues for achieving the network connectivity and user coverage, which are related with the node placement problem. In this work, we consider Simulated Annealing Algorithm (SA temperature and Iteration per phase for the router node placement problem in WMNs. We want to find the optimal distribution of router nodes in order to provide the best network connectivity and provide the best coverage in a set of Normal distributed clients. From simulation results, we found how to optimize both the size of Giant Component and number of covered mesh clients. When the number of iterations per phase is big, the performance is better in WMN-SA System. From for SA temperature, when SA temperature is 0 and 1, the performance is almost same. When SA temperature is 2 and 3 or more, the performance decrease because there are many kick ups.

  2. Continuous system modeling

    Science.gov (United States)

    Cellier, Francois E.

    1991-01-01

    A comprehensive and systematic introduction is presented for the concepts associated with 'modeling', involving the transition from a physical system down to an abstract description of that system in the form of a set of differential and/or difference equations, and basing its treatment of modeling on the mathematics of dynamical systems. Attention is given to the principles of passive electrical circuit modeling, planar mechanical systems modeling, hierarchical modular modeling of continuous systems, and bond-graph modeling. Also discussed are modeling in equilibrium thermodynamics, population dynamics, and system dynamics, inductive reasoning, artificial neural networks, and automated model synthesis.

  3. Small-angle light scattering by airborne particulates: Environnement S.A. continuous particulate monitor

    Science.gov (United States)

    Renard, Jean-Baptiste; Thaury, Claire; Mineau, Jean-Luc; Gaubicher, Bertrand

    2010-08-01

    Airborne particulate matter may have an effect on human health. It is therefore necessary to determine and control in real time the evolution of the concentration and mass of particulates in the ambient air. These parameters can be obtained using optical methods. We propose here a new instrument, 'CPM' (continuous particulate monitor), for the measurement of light scattered by ambient particulates at small angles. This geometry allows simultaneous and separate detections of PM10, PM2.5 and PM1 fractions of airborne particulate matter, with no influence of their chemical nature and without using theoretical calculations. The ambient air is collected through a standard sampling head (PM10 inlet according to EN 12341, PM2.5 inlet according to EN 14907; or PM1, TSP inlets, standard US EPA inlets). The analysis of the first measurements demonstrates that this new instrument can detect, for each of the seven defined size ranges, real-time variations of particulate content in the ambient air. The measured concentrations (expressed in number per liter) can be converted into total mass concentrations (expressed in micrograms per cubic meter) of all fractions of airborne particulate matters sampled by the system. Periodic comparison with a beta-attenuation mass monitor (MP101M Beta Gauge Analyzer from Environnement S.A. company) allows the calculation of a calibration factor as a function of the mean particulate density that is used for this conversion. It is then possible to provide real-time relative variations of aerosol mass concentration.

  4. MimoSA: a system for minimotif annotation

    Directory of Open Access Journals (Sweden)

    Kundeti Vamsi

    2010-06-01

    Full Text Available Abstract Background Minimotifs are short peptide sequences within one protein, which are recognized by other proteins or molecules. While there are now several minimotif databases, they are incomplete. There are reports of many minimotifs in the primary literature, which have yet to be annotated, while entirely novel minimotifs continue to be published on a weekly basis. Our recently proposed function and sequence syntax for minimotifs enables us to build a general tool that will facilitate structured annotation and management of minimotif data from the biomedical literature. Results We have built the MimoSA application for minimotif annotation. The application supports management of the Minimotif Miner database, literature tracking, and annotation of new minimotifs. MimoSA enables the visualization, organization, selection and editing functions of minimotifs and their attributes in the MnM database. For the literature components, Mimosa provides paper status tracking and scoring of papers for annotation through a freely available machine learning approach, which is based on word correlation. The paper scoring algorithm is also available as a separate program, TextMine. Form-driven annotation of minimotif attributes enables entry of new minimotifs into the MnM database. Several supporting features increase the efficiency of annotation. The layered architecture of MimoSA allows for extensibility by separating the functions of paper scoring, minimotif visualization, and database management. MimoSA is readily adaptable to other annotation efforts that manually curate literature into a MySQL database. Conclusions MimoSA is an extensible application that facilitates minimotif annotation and integrates with the Minimotif Miner database. We have built MimoSA as an application that integrates dynamic abstract scoring with a high performance relational model of minimotif syntax. MimoSA's TextMine, an efficient paper-scoring algorithm, can be used to

  5. Continuously tunable pulsed Ti:Sa laser self-seeded by an extended grating cavity

    CERN Document Server

    Li, Ruohong; Rothe, Sebastian; Teigelhöfer, Andrea; Mostamand, Maryam

    2016-01-01

    A continuously tunable titanium:sapphire (Ti:Sa) laser self-seeded by an extended grating cavity was demonstrated and characterized. By inserting a partially reflecting mirror inside the cavity of a classic single-cavity grating laser, two oscillators are created: a broadband power oscillator, and a narrowband oscillator with a prism beam expander and a diffraction grating in Littrow configuration. By coupling the grating cavity oscillation into the power oscillator, a power-enhanced narrow-linewidth laser oscillation is achieved. Compared to the classic grating laser, this simple modification significantly increases the laser output power without considerably broadening the linewidth. With most of the oscillating laser power confined inside the broadband power cavity and lower power incident onto the grating, the new configuration also allows higher pump power, which is typically limited by the thermal deformation of the grating coating at high oscillation power.

  6. Teaching Computer System-DMT DESIGN(SA.1

    Directory of Open Access Journals (Sweden)

    A. O. Shteynberg

    2012-01-01

    Full Text Available Тhe paper introduces the training computer system of sub- agential type based on a didactic multidimensional technology. The methodology bases incorporate the systematic activity approach, some elements of artificial intelligence theory, and the instrumental didactic theory and technology developed by Scientific Experimental Laboratory at Bashkirsky State Pedagogical University. The above training system – Didactic Multidimensional Technology Design of Sub-Agential Type (DMT_DESIGN (SA.1 – has been developed for raising teachers’ technological competence and creativity regarding both the general and vocational education. Its training structure is specified by invariant socio-cultural and anthropological bases; logically semantic modeling of course materials is provided. The research data can be used by people, engaged in developing educational information technologies; practicing teachers; and post-graduates conducting research and implementing the findings. 

  7. Formal Verification of Continuous Systems

    DEFF Research Database (Denmark)

    Sloth, Christoffer

    2012-01-01

    and the verification procedures should be algorithmically synthesizable. Autonomous control plays an important role in many safety-critical systems. This implies that a malfunction in the control system can have catastrophic consequences, e.g., in space applications where a design flaw can result in large economic...... losses. Furthermore, a malfunction in the control system of a surgical robot may cause death of patients. The previous examples involve complex systems that are required to operate according to complex specifications. The systems cannot be formally verified by modern verification techniques, due......The purpose of this thesis is to develop a method for verifying timed temporal properties of continuous dynamical systems, and to develop a method for verifying the safety of an interconnection of continuous systems. The methods must be scalable in the number of continuous variables...

  8. Software reference for SaTool - a Tool for Structural Analysis of Automated Systems

    DEFF Research Database (Denmark)

    Lorentzen, Torsten; Blanke, Mogens

    2004-01-01

    This software reference details the functions of SaTool – a tool for structural analysis of technical systems. SaTool is intended used as part of an industrial systems design cycle. Structural analysis is a graph-based technique where principal relations between variables express the system...... of the graph. SaTool makes analysis of the structure graph to provide knowledge about fundamental properties of the system in normal and faulty conditions. Salient features of SaTool include rapid analysis of possibility to diagnose faults and ability to make autonomous recovery should faults occur....

  9. Study on the welding continuous cooling transformation and weldability of SA508Gr4 steel for nuclear pressure vessels

    Energy Technology Data Exchange (ETDEWEB)

    Bai, Qingwei; Ma, Yonglin; Xing, Shuqing; Chen, Zhongyi [Inner Mongolia Univ. of Science and Technology, Baotou (China). School of Material and Metallurgy; Kang, Xiaolan [Baotou Vocational and Technical College (China)

    2017-02-15

    SA508Gr4 is a newly developed high-strength steel for nuclear reactor pressure vessels. Its welding characteristics remain largely unexplored. In this work, the simulated heat affected zone continuous cooling transformation (SH-CCT) diagram of SA508Gr4 steel was constructed and the high-temperature cooling phase compositions and the properties of the heat affected zone (HAZ) were characterized using dilatometry and microscopic tests. The results show that the phase transformation in the HAZ was divided into bainite and martensite transformation stages. When 4.6 ≤ t{sub 8/5} (the HAZ cooling time from 800 C to 500 C) ≤ 15 s, lath-shaped martensite was fully developed, resulting in extensive hardening and cold cracking in the HAZ, while the cooling time required to form the bainite completely exceeds 1 200 s. Thus, to improve weld quality, preheating to 196 C or higher is recommended.

  10. CONTINUITY OF DYNAMIC-SYSTEMS - THE CONTINUOUS-TIME CASE

    NARCIS (Netherlands)

    NIEUWENHUIS, JW; WILLEMS, JC

    1992-01-01

    The purpose of this paper is to study continuity of the parametrization of continuous-time linear time-invariant differential systems having a finite-dimensional state space. We show that convergence of the behavior of such systems corresponds to convergence of the coefficients of a set of associate

  11. Continuous recovery system for electrorefiner system

    Science.gov (United States)

    Williamson, Mark A.; Wiedmeyer, Stanley G.; Willit, James L.; Barnes, Laurel A.; Blaskovitz, Robert J.

    2014-06-10

    A continuous recovery system for an electrorefiner system may include a trough having a ridge portion and a furrow portion. The furrow portion may include a first section and a second section. An inlet and exit pipe may be connected to the trough. The inlet pipe may include an outlet opening that opens up to the first section of the furrow portion of the trough. The exit pipe may include an entrance opening that opens up to the second section of the furrow portion of the trough. A chain may extend through the inlet and exit pipes and along the furrow portion of the trough. The chain may be in a continuous loop form. A plurality of flights may be secured to the chain. Accordingly, the desired product may be continuously harvested from the electrorefiner system without having to halt the electrical power and/or remove the cathode and anode assemblies.

  12. The ChrSA and HrrSA Two-Component Systems Are Required for Transcriptional Regulation of the hemA Promoter in Corynebacterium diphtheriae

    Science.gov (United States)

    Burgos, Jonathan M.

    2016-01-01

    ABSTRACT Corynebacterium diphtheriae utilizes heme and hemoglobin (Hb) as iron sources for growth in low-iron environments. In C. diphtheriae, the two-component signal transduction systems (TCSs) ChrSA and HrrSA are responsive to Hb levels and regulate the transcription of promoters for hmuO, hrtAB, and hemA. ChrSA and HrrSA activate transcription at the hmuO promoter and repress transcription at hemA in an Hb-dependent manner. In this study, we show that HrrSA is the predominant repressor at hemA and that its activity results in transcriptional repression in the presence and absence of Hb, whereas repression of hemA by ChrSA is primarily responsive to Hb. DNA binding studies showed that both ChrA and HrrA bind to the hemA promoter region at virtually identical sequences. ChrA binding was enhanced by phosphorylation, while binding to DNA by HrrA was independent of its phosphorylation state. ChrA and HrrA are phosphorylated in vitro by the sensor kinase ChrS, whereas no kinase activity was observed with HrrS in vitro. Phosphorylated ChrA was not observed in vivo, even in the presence of Hb, which is likely due to the instability of the phosphate moiety on ChrA. However, phosphorylation of HrrA was observed in vivo regardless of the presence of the Hb inducer, and genetic analysis indicates that ChrS is responsible for most of the phosphorylation of HrrA in vivo. Phosphorylation studies strongly suggest that HrrS functions primarily as a phosphatase and has only minimal kinase activity. These findings collectively show a complex mechanism of regulation at the hemA promoter, where both two-component systems act in concert to optimize expression of heme biosynthetic enzymes. IMPORTANCE Understanding the mechanism by which two-component signal transduction systems function to respond to environmental stimuli is critical to the study of bacterial pathogenesis. The current study expands on the previous analyses of the ChrSA and HrrSA TCSs in the human pathogen C

  13. Continuous Approximations of a Class of Piecewise Continuous Systems

    Science.gov (United States)

    Danca, Marius-F.

    In this paper, we provide a rigorous mathematical foundation for continuous approximations of a class of systems with piecewise continuous functions. By using techniques from the theory of differential inclusions, the underlying piecewise functions can be locally or globally approximated. The approximation results can be used to model piecewise continuous-time dynamical systems of integer or fractional-order. In this way, by overcoming the lack of numerical methods for differential equations of fractional-order with discontinuous right-hand side, unattainable procedures for systems modeled by this kind of equations, such as chaos control, synchronization, anticontrol and many others, can be easily implemented. Several examples are presented and three comparative applications are studied.

  14. Developing a Continuous Improvement System

    Science.gov (United States)

    2016-09-16

    to ensure that its employees enhance their knowledge, skills and experiences. These improved competencies help them achieve personal and career ...Army’s Career Acquisition Personnel and Position Management In- formation System. This system allows the employee to plan, coordinate, and manage their...The initial chal- lenge was to adapt the prototype equipment to the facilities at CAAA, which received the primary pieces of equipment such as the

  15. The SA-2239/WLQ-4(V) Cutty Sark distribution system

    Science.gov (United States)

    Vulcan, A.; Ho, J.

    1981-01-01

    A redundant frequency and time distribution system provides a multiplicity of isolated outputs, all of which are derived from three atomic frequency standards. The distribution system monitors input parameters of the signals coming from the Cesium Standards and selects one to be the primary standard, phase locks an internal oscillator which has excellent aging characteristics in the open loop mode and acts as a filter to provide phase noise improvement, and generates 1 megahertz and 100 kHz by direct synthesis. Additionally, the system distributes RF and timing signals consisting of 5 MHz, 1 MHz, 100 kHz, BCD Time-of-Day, 1 pps and 1 ppm.

  16. Software reference for SaTool - a Tool for Structural Analysis of Automated Systems

    DEFF Research Database (Denmark)

    Lorentzen, Torsten; Blanke, Mogens

    2004-01-01

    This software reference details the functions of SaTool – a tool for structural analysis of technical systems. SaTool is intended used as part of an industrial systems design cycle. Structural analysis is a graph-based technique where principal relations between variables express the system......’s properties. Measured and controlled quantities in the system are related to variables through functional relations, which need only be stated as names, their explicit composition need not be described to the tool. The user enters a list of these relations that together describe the entirerity of the system....... The list of such variables and functional relations constitute the system’s structure graph. Normal operation means all functional relations are intact. Should faults occur, one or more functional relations cease to be valid. In a structure graph, this is seen as the disappearance of one or more nodes...

  17. Reliability assessment of continuous mining technological systems

    OpenAIRE

    2010-01-01

    Article is devoted to the analysis of reliability of parameters of continuous system of extraction with use of various approaches with the purpose of performance of a fast estimation of general efficiency of the equipment of such industrial systems, as Monte-Carlo and stress-force of intervention. Article is devoted to the analysis of reliability of parameters of continuous system of extraction with use of various approaches with the purpose of performance of a fast estimation of general e...

  18. A mobile diabetes management and educational system for type-2 diabetics in Saudi Arabia (SAED).

    Science.gov (United States)

    Alotaibi, Mohammed M; Istepanian, Robert; Philip, Nada

    2016-01-01

    Diabetes is a chronic disease, with high prevalence across many nations, which is characterized by elevated level of blood glucose and risk of acute and chronic complication. The Kingdom of Saudi Arabia (KSA) has one of the highest levels of diabetes prevalence globally. It is well-known that the treatment of diabetes is complex process and requires both lifestyle change and clear pharmacologic treatment plan. To avoid the complication from diabetes, the effective behavioural change and extensive education and self-management is one of the key approaches to alleviate such complications. However, this process is lengthy and expensive. The recent studies on the user of smart phone technologies for diabetes self-management have proven to be an effective tool in controlling hemoglobin (HbA1c) levels especially in type-2 diabetic (T2D) patients. However, to date no reported study addressed the effectiveness of this approach in the in Saudi patients. This study investigates the impact of using mobile health technologies for the self-management of diabetes in Saudi Arabia. In this study, an intelligent mobile diabetes management system (SAED), tailored for T2D patients in KSA was developed. A pilot study of the SAED system was conducted in Saudi Arabia with 20 diabetic patients for 6 months duration. The patients were randomly categorized into a control group who did not use the SAED system and an intervention group whom used the SAED system for their diabetes management during this period. At the end of the follow-up period, the HbA1c levels in the patients in both groups were measure together with a diabetes knowledge test was also conducted to test the diabetes awareness of the patients. The results of SAED pilot study showed that the patients in the intervention group were able to significantly decrease their HbA1c levels compared to the control group. The SAED system also enhanced the diabetes awareness amongst the patients in the intervention group during the trial

  19. Continuous signals and systems with Matlab

    CERN Document Server

    ElAli, Taan

    2008-01-01

    Designed for a one-semester undergraduate course in continuous linear systems, Continuous Signals and Systems with MATLAB®, Second Edition presents the tools required to design, analyze, and simulate dynamic systems. It thoroughly describes the process of the linearization of nonlinear systems, using MATLAB® to solve most examples and problems. With updates and revisions throughout, this edition focuses more on state-space methods, block diagrams, and complete analog filter design. New to the Second Edition           A chapter on block diagrams that covers various classical and state-space

  20. Sticky continuous processes have consistent price systems

    DEFF Research Database (Denmark)

    Bender, Christian; Pakkanen, Mikko; Sayit, Hasanjan

    Under proportional transaction costs, a price process is said to have a consistent price system, if there is a semimartingale with an equivalent martingale measure that evolves within the bid-ask spread. We show that a continuous, multi-asset price process has a consistent price system, under arb...

  1. 3GPP SA2 architecture and functions for 5G mobile communication system

    Directory of Open Access Journals (Sweden)

    Junseok Kim

    2017-03-01

    Full Text Available The on-going development of Fifth Generation (5G mobile communication technology will be the cornerstone for applying Information and Communication Technology (ICT to various fields, e.g., smart city, smart home, connected car, etc. The 3rd Generation Partnership Project (3GPP, which has developed the most successful standard technologies in the mobile communication market such as Universal Mobile Telecommunication System (UMTS and Long Term Evolution (LTE, is currently carrying out the standardization of both 5G access network system and 5G core network system at the same time. Within 3GPP, Service and System Aspects Working Group 2 (SA2 is responsible for identifying the main functions and entities of the network. In December 2016, the 3GPP SA2 group finalized the first phase of study for the architecture and main functions of 5G mobile communication system under the study item of Next Generation system (NextGen. Currently, normative standardization is on-going based on the agreements made in the NextGen Phase 1 study. In this paper, we present the architecture and functions of 5G mobile communication system agreed in the NextGen study.

  2. Design of collection optics and polychromators for a JT-60SA Thomson scattering system.

    Science.gov (United States)

    Tojo, H; Hatae, T; Sakuma, T; Hamano, T; Itami, K; Aida, Y; Suitoh, S; Fujie, D

    2010-10-01

    This paper presents designs of collection optics for a JT-60SA Thomson scattering system. By using tangential (to the toroidal direction) YAG laser injection, three collection optics without strong chromatic aberration generated by the wide viewing angle and small design volume were found to measure almost all the radial space. For edge plasma measurements, the authors optimized the channel number and wavelength ranges of band-pass filters in a polychromator to reduce the relative error in T(e) by considering all spatial channels and a double-pass laser system with different geometric parameters.

  3. Simulation of a continuous lignite excavation system

    Energy Technology Data Exchange (ETDEWEB)

    Michalakopoulos, T.N.; Arvaniti, S.E.; Panagiotou, G.N. [National Technical University of Athens, Athens (Greece). Department of Mining Engineering

    2005-07-01

    A discrete-event simulation model using the GPSS/H simulation language has been developed for a excavation system at a multi- level terrace mine. The continuous excavation system consists of five bucket wheel excavators and a network of 22 km of belt conveyors. Ways of dealing with the continuous material flow and frequent changes of material type are considered. The principal model output variables are production and arrival rate at the transfer point of mineral and waste. Animation and comparison with previous production data have been used to validate the model. 14 refs., 6 figs., 1 tab.

  4. Contribuições para um programa de educação continuada em saúde coletiva Reflections on a continuing education program in public health

    Directory of Open Access Journals (Sweden)

    Jairnilson S. Paim

    1992-09-01

    Full Text Available O presente trabalho constitui-se em um conjunto de reflexões para um Projeto de Educação Continuada dirigido a profissionais de saúde coletiva. A partir de reflexões sobre o tema que vêm sendo estimuladas pela Escola Nacional de Saúde Pública da Fiocruz, os autores sugerem um referencial teórico nos campos da saúde coletiva e da educação, apontando para a formulação de objetivos baseados em dados do contexto nacional, em fatores sócio-econômicos, nos determinantes das condições de saúde, nas políticas de saúde e trabalho e nas estruturas e objetivos das instituições onde estejam inseridas as clientelas eleitas pelo Programa. A estratégia aponta para cinco pontos fundamentais, recomendando a organização de um banco de dados de egressos, a articulação entre universidades e órgãos formadores de recursos humanos da área de saúde, a realização de oficinas e seminários, a análise de conjunturas locais com definição de seus prováveis cenários e a opção pelo nível local. O Programa elege o trabalho como eixo integrador de suas ações, superando o modo escolar de ensinar e aprender, oferecendo um processo educativo a partir de dados da realidade, organizado entre docentes das instituições acadêmicas e agentes das práticas de saúde, privilegiando o enfrentamento e a solução dos problemas dos serviços como referência para a aplicação dos conhecimentos produzidos e base de reflexão para a recriação das práticas de saúde em vigor.This paper is a set of reflections for a Project on Continued Education aimed at professionals in collective health. From reflections on the subject that are being promoted by the National School of Public Health at the Oswaldo Cruz Foundation in Rio de Janeiro, the authors suggest a theoretical reference in the fields of collective health and education, pointing to the formulation of objectives based on data from the national context, socioeconomic factors, determinants of

  5. Continuous finite element methods for Hamiltonian systems

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    By applying the continuous finite element methods of ordinary differential equations, the linear element methods are proved having second-order pseudo-symplectic scheme and the quadratic element methods are proved having third-order pseudosymplectic scheme respectively for general Hamiltonian systems, and they both keep energy conservative. The finite element methods are proved to be symplectic as well as energy conservative for linear Hamiltonian systems. The numerical results are in agreement with theory.

  6. Hybrid PSO-SA Type Algorithms for Multimodal Function Optimization and Reducing Energy Consumption in Embedded Systems

    Directory of Open Access Journals (Sweden)

    Lhassane Idoumghar

    2011-01-01

    When a local optimal solution is reached with PSO, all particles gather around it, and escaping from this local optima becomes difficult. To avoid premature convergence of PSO, we present a new hybrid evolutionary algorithm, called HPSO-SA, based on the idea that PSO ensures fast convergence, while SA brings the search out of local optima because of its strong local-search ability. The proposed HPSO-SA algorithm is validated on ten standard benchmark multimodal functions for which we obtained significant improvements. The results are compared with these obtained by existing hybrid PSO-SA algorithms. In this paper, we provide also two versions of HPSO-SA (sequential and distributed for minimizing the energy consumption in embedded systems memories. The two versions, of HPSO-SA, reduce the energy consumption in memories from 76% up to 98% as compared to Tabu Search (TS. Moreover, the distributed version of HPSO-SA provides execution time saving of about 73% up to 84% on a cluster of 4 PCs.

  7. Investigation of Applications of SA in the Design of Dynamic Cellular Manufacturing Systems

    Directory of Open Access Journals (Sweden)

    V. Jayakumar,

    2010-08-01

    Full Text Available Manufacturing industries are under intense pressure from the increasingly competitive global marketplace. Shorter product lifecycle, time to market and diverse customer needs have challengedmanufacturers to improve the efficiency and productivity of their production activities. Manufacturing systems should be able to adjust or respond quickly to adopt necessary changes in product design and product demand without major investment. Traditional manufacturingsystems are not capable of satisfying such requirements. Although a cellular manufacturing system (CMS provides great benefits, the design of CMS is complex for real life problems. The design of such a kind of manufacturing system under dynamic production environment, with variety and demand varying between each planning horizon, requires pervasive use of a Metaheuristics such as Genetic Algorithm (GA, Simulated Annealing algorithm (SA, and Tabu Search (TS. Thedynamic cell formation (CF problem (involving the formation of a mathematical model depicting the variableproduct mix and demand across the planning horizons is known to be one of the NP-hard combinational problems. Although some optimization algorithms can find the optimal solution for small- and medium-sized problems, they have a disadvantage in that the memory and computational time requirements are extremely high, and increase exponentially, as the problem size increases. In such situations, meta-heuristics are used for exploring and exploiting the search space to obtain good solutions. In contrast to other stochastic searches, SAs in particularhave the following unique features: it does not get trapped in local minimum. Allow uphill moves controlled by parameter called temperature. Final result not dependent on initial state.These features often makes them a preferable choice over traditional heuristics. The objective of this paper is to review how the SA has been applied so far for the Design of Cellular Manufacturing

  8. a Continuous-Time Positive Linear System

    Directory of Open Access Journals (Sweden)

    Kyungsup Kim

    2013-01-01

    Full Text Available This paper discusses a computational method to construct positive realizations with sparse matrices for continuous-time positive linear systems with multiple complex poles. To construct a positive realization of a continuous-time system, we use a Markov sequence similar to the impulse response sequence that is used in the discrete-time case. The existence of the proposed positive realization can be analyzed with the concept of a polyhedral convex cone. We provide a constructive algorithm to compute positive realizations with sparse matrices of some positive systems under certain conditions. A sufficient condition for the existence of a positive realization, under which the proposed constructive algorithm works well, is analyzed.

  9. Squeezing and Entanglement in Continuous Variable Systems

    Institute of Scientific and Technical Information of China (English)

    XIA Yun-Jie; GUO Guang-Can

    2004-01-01

    Based on total variance of a pair of Einstein-Podolsky-Rosen (EPR) type operators, the generalized EPR entangled states in continuous variable systems are defined. We show that such entangled states must correspond to two-mode squeezing states whether these states are Gaussian or not and whether they are pure or not. With help of the relation between the total variance and the entanglement, the degree of such entanglement is also defined. Through analysing some specific cases, we see that this method is very convenient and easy in practical applications. In addition, an entangled state with no squeezing is studied, which reveals that there certainly exists something unknown about entanglement in continuous variable systems.

  10. Dynamic simulations for preparing the acceptance test of JT-60SA cryogenic system

    Science.gov (United States)

    Cirillo, R.; Hoa, C.; Michel, F.; Poncet, J. M.; Rousset, B.

    2016-12-01

    Power generation in the future could be provided by thermo-nuclear fusion reactors like tokamaks. There inside, the fusion reaction takes place thanks to the generation of plasmas at hundreds of millions of degrees that must be confined magnetically with superconductive coils, cooled down to around 4.5 K. Within this frame, an experimental tokamak device, JT-60SA is currently under construction in Naka (Japan). The plasma works cyclically and the coil system is subject to pulsed heat loads. In order to size the refrigerator close to the average power and hence optimizing investment and operational costs, measures have to be taken to smooth the heat load. Here we present a dynamic model of the JT-60SA's Auxiliary Cold box (ACB) for preparing the acceptance tests of the refrigeration system planned in 2016 in Naka. The aim of this study is to simulate the pulsed load scenarios using different process controls. All the simulations have been performed with EcosimPro® and the associated cryogenic library: CRYOLIB.

  11. Research and Development of 2-frequency (110/138 GHz FADIS for JT-60SA ECHCD system

    Directory of Open Access Journals (Sweden)

    Idei H.

    2015-01-01

    Full Text Available A FAst DIrectional Switch (FADIS of 2-frequency (2-ƒ gyrotron system for the JT-60SA project is being developed under collaboration between Japan Atomic Energy Agency (JAEA and Kyushu University. At first, the frequency drift and dip in the gyrotron operation were measured to consider which kind of FADIS is preferred for application in the Electron Cyclotron Heating and Current Drive (ECHCD system for the JT- 60SA. Various types of the FADIS have been considered. A square corrugated waveguide diplexer system with double resonant rings was considered as one of the most attractive FADIS systems for stable high-power and long-pulse operations in the 2-ƒ JT-60SA ECHCD system.

  12. Waiting time distribution for continuous stochastic systems.

    Science.gov (United States)

    Gernert, Robert; Emary, Clive; Klapp, Sabine H L

    2014-12-01

    The waiting time distribution (WTD) is a common tool for analyzing discrete stochastic processes in classical and quantum systems. However, there are many physical examples where the dynamics is continuous and only approximately discrete, or where it is favourable to discuss the dynamics on a discretized and a continuous level in parallel. An example is the hindered motion of particles through potential landscapes with barriers. In the present paper we propose a consistent generalization of the WTD from the discrete case to situations where the particles perform continuous barrier crossing characterized by a finite duration. To this end, we introduce a recipe to calculate the WTD from the Fokker-Planck (Smoluchowski) equation. In contrast to the closely related first passage time distribution (FPTD), which is frequently used to describe continuous processes, the WTD contains information about the direction of motion. As an application, we consider the paradigmatic example of an overdamped particle diffusing through a washboard potential. To verify the approach and to elucidate its numerical implications, we compare the WTD defined via the Smoluchowski equation with data from direct simulation of the underlying Langevin equation and find full consistency provided that the jumps in the Langevin approach are defined properly. Moreover, for sufficiently large energy barriers, the WTD defined via the Smoluchowski equation becomes consistent with that resulting from the analytical solution of a (two-state) master equation model for the short-time dynamics developed previously by us [Phys. Rev. E 86, 061135 (2012)]. Thus, our approach "interpolates" between these two types of stochastic motion. We illustrate our approach for both symmetric systems and systems under constant force.

  13. Melhores práticas em sistemas locais de saúde: sob foco, a saúde bucal do idoso Best practices in local health systems: focusing on the elderly's oral health

    Directory of Open Access Journals (Sweden)

    Ana Lúcia Schaefer Ferreira de Mello

    2010-01-01

    considers the interaction of domains (Underpinnings, Understanding of the Environment and Practice, as an action-research. An intervention at the Best Practice referential in a local health system was carried out through a systematic and critical reflection by the actors involved with local governance, examining its potential to transform current practices according to the principles of Health Promotion. Data were collected from focal groups formed by managers, health professionals and the elderly (20 subjects. The best practices were suggested built on the principles of the National Health Service, Family Health Strategy and Health Promotion. The process of development of Best Practices is based on the expectation that a higher oral health standard for the elderly could be reached by means of a change in organizational practices, as well as in health, research and evaluation practices. The possible change depends on the willingness of the actors involved as regards the careful consideration and analysis of current behaviors, procedures and scenarios. The driving force for the continuous improvement of practices is the commitment of the local governance with the principles of Health Promotion. It was possible to build an indicative set of practices on oral health of the elderly and to generate useful knowledge to afford the approach of the theoretical models to the reality, with a view to the transformation of such practices.

  14. Continuous Glucose Monitoring Systems: A Review

    Directory of Open Access Journals (Sweden)

    Sandeep Kumar Vashist

    2013-10-01

    Full Text Available There have been continuous advances in the field of glucose monitoring during the last four decades, which have led to the development of highly evolved blood glucose meters, non-invasive glucose monitoring (NGM devices and continuous glucose monitoring systems (CGMS. Glucose monitoring is an integral part of diabetes management, and the maintenance of physiological blood glucose concentration is the only way for a diabetic to avoid life-threatening diabetic complications. CGMS have led to tremendous improvements in diabetic management, as shown by the significant lowering of glycated hemoglobin (HbA1c in adults with type I diabetes. Most of the CGMS have been minimally-invasive, although the more recent ones are based on NGM techniques. This manuscript reviews the advances in CGMS for diabetes management along with the future prospects and the challenges involved.

  15. Advanced continuous cultivation methods for systems microbiology.

    Science.gov (United States)

    Adamberg, Kaarel; Valgepea, Kaspar; Vilu, Raivo

    2015-09-01

    Increasing the throughput of systems biology-based experimental characterization of in silico-designed strains has great potential for accelerating the development of cell factories. For this, analysis of metabolism in the steady state is essential as only this enables the unequivocal definition of the physiological state of cells, which is needed for the complete description and in silico reconstruction of their phenotypes. In this review, we show that for a systems microbiology approach, high-resolution characterization of metabolism in the steady state--growth space analysis (GSA)--can be achieved by using advanced continuous cultivation methods termed changestats. In changestats, an environmental parameter is continuously changed at a constant rate within one experiment whilst maintaining cells in the physiological steady state similar to chemostats. This increases the resolution and throughput of GSA compared with chemostats, and, moreover, enables following of the dynamics of metabolism and detection of metabolic switch-points and optimal growth conditions. We also describe the concept, challenge and necessary criteria of the systematic analysis of steady-state metabolism. Finally, we propose that such systematic characterization of the steady-state growth space of cells using changestats has value not only for fundamental studies of metabolism, but also for systems biology-based metabolic engineering of cell factories.

  16. [The history of the public health reform in Brazil and of the Sistema Único de Saúde: changes, continuities, and the current agenda].

    Science.gov (United States)

    Menicucci, Telma Maria Gonçalves

    2014-01-01

    The paper offers a historical retrospective of Brazil's Sistema Único de Saúde (SUS), including its background and its legacy on its current design. It begins describing some of the system's structural problems, especially the co-existence of a public system alongside a private one. It identifies problems that have hampered a firmer solidification of SUS, while it also highlights the immense import of establishing a unified, universal system in a country the size of Brazil. The discussion includes the effects of the system, which has represented a major change in the field of social rights, introducing new actors, and internalizing the notion of health as a right. Lastly, recent developments that have put SUS on the public agenda are discussed.

  17. Continuous-Time Bilinear System Identification

    Science.gov (United States)

    Juang, Jer-Nan

    2003-01-01

    The objective of this paper is to describe a new method for identification of a continuous-time multi-input and multi-output bilinear system. The approach is to make judicious use of the linear-model properties of the bilinear system when subjected to a constant input. Two steps are required in the identification process. The first step is to use a set of pulse responses resulting from a constant input of one sample period to identify the state matrix, the output matrix, and the direct transmission matrix. The second step is to use another set of pulse responses with the same constant input over multiple sample periods to identify the input matrix and the coefficient matrices associated with the coupling terms between the state and the inputs. Numerical examples are given to illustrate the concept and the computational algorithm for the identification method.

  18. Asymmetric EPR entanglement in continuous variable systems

    CERN Document Server

    Wagner, Katherine; Armstrong, Seiji; Morizur, Jean-Francois; Lam, Ping Koy; Bachor, Hans-Albert

    2012-01-01

    Continuous variable entanglement can be produced in nonlinear systems or via interference of squeezed states. In many of optical systems, such as parametric down conversion or interference of optical squeezed states, production of two perfectly symmetric subsystems is usually used for demonstrating the existence of entanglement. This symmetry simplifies the description of the concept of entanglement. However, asymmetry in entanglement may arise naturally in a real experiment, or be intentionally introduced in a given quantum information protocol. These asymmetries can emerge from having the output beams experience different losses and environmental contamination, or from the availability of non-identical input quantum states in quantum communication protocols. In this paper, we present a visualisation of entanglement using quadrature amplitude plots of the twin beams. We quantitatively discuss the strength of asymmetric entanglement using EPR and inseparability criteria and theoretically show that the optimal...

  19. A computer-aided continuous assessment system

    Directory of Open Access Journals (Sweden)

    B. C.H. Turton

    1996-12-01

    Full Text Available Universities within the United Kingdom have had to cope with a massive expansion in undergraduate student numbers over the last five years (Committee of Scottish University Principals, 1993; CVCP Briefing Note, 1994. In addition, there has been a move towards modularization and a closer monitoring of a student's progress throughout the year. Since the price/performance ratio of computer systems has continued to improve, Computer- Assisted Learning (CAL has become an attractive option. (Fry, 1990; Benford et al, 1994; Laurillard et al, 1994. To this end, the Universities Funding Council (UFQ has funded the Teaching and Learning Technology Programme (TLTP. However universities also have a duty to assess as well as to teach. This paper describes a Computer-Aided Assessment (CAA system capable of assisting in grading students and providing feedback. In this particular case, a continuously assessed course (Low-Level Languages of over 100 students is considered. Typically, three man-days are required to mark one assessed piece of coursework from the students in this class. Any feedback on how the questions were dealt with by the student are of necessity brief. Most of the feedback is provided in a tutorial session that covers the pitfalls encountered by the majority of the students.

  20. Installation and pre-commissioning of the cryogenic system of JT-60SA tokamak

    Science.gov (United States)

    Hoa, C.; Michel, F.; Roussel, P.; Fejoz, P.; Girard, S.; Goncalves, R.; Lamaison, V.; Natsume, K.; Kizu, K.; Koide, Y.; Yoshida, K.; Cardella, A.; Portone, A.; Verrecchia, M.; Wanner, M.; Beauvisage, J.; Bertholat, F.; Gaillard, G.; Heloin, V.; Langevin, B.; Legrand, J.; Maire, S.; Perrier, J. M.; Pudys, V.

    2017-02-01

    The cryogenic system for the superconducting tokamak JT-60SA is currently being commissioned in Naka, Japan and shall be ready for operation in summer 2016. This contribution is part of the Broader Approach agreement between Japan and Europe. With an equivalent refrigeration capacity of about 9.5 kW at 4.5 K the cryogenic system will supply cryo-pump panels at 3.7 K, superconducting magnets and their structures at 4.4 K, high temperature superconducting current leads at 50 K and thermal shields between 80 K and 100 K. The system has been specifically designed to handle large pulse loads at 4.4 K during plasma operation. The mechanical and electrical assembly of the cryogenic system has been achieved within six months by October 2015. The main contractor Air Liquide Advanced Technology (AL-aT) have supplied eight parallel working screw compressors with a common oil removal and dryer system, a Refrigeration Cold Box and an Auxiliary Cold box with cold rotating machines. F4E has provided six GHe storage vessels and QST has provided the complete infrastructure and the facilities for the utilities. The paper gives an overview of the main design features, the infrastructure and the status of installation and pre-commissioning.

  1. Quantifying decoherence in continuous variable systems

    Energy Technology Data Exchange (ETDEWEB)

    Serafini, A [Dipartimento di Fisica ' ER Caianiello' , Universita di Salerno, INFM UdR Salerno, INFN Sezione Napoli, Gruppo Collegato Salerno, Via S Allende, 84081 Baronissi, SA (Italy); Paris, M G A [Dipartimento di Fisica and INFM, Universita di Milano, Milan (Italy); Illuminati, F [Dipartimento di Fisica ' ER Caianiello' , Universita di Salerno, INFM UdR Salerno, INFN Sezione Napoli, Gruppo Collegato Salerno, Via S Allende, 84081 Baronissi, SA (Italy); De Siena, S [Dipartimento di Fisica ' ER Caianiello' , Universita di Salerno, INFM UdR Salerno, INFN Sezione Napoli, Gruppo Collegato Salerno, Via S Allende, 84081 Baronissi, SA (Italy)

    2005-04-01

    We present a detailed report on the decoherence of quantum states of continuous variable systems under the action of a quantum optical master equation resulting from the interaction with general Gaussian uncorrelated environments. The rate of decoherence is quantified by relating it to the decay rates of various, complementary measures of the quantum nature of a state, such as the purity, some non-classicality indicators in phase space, and, for two-mode states, entanglement measures and total correlations between the modes. Different sets of physically relevant initial configurations are considered, including one- and two-mode Gaussian states, number states, and coherent superpositions. Our analysis shows that, generally, the use of initially squeezed configurations does not help to preserve the coherence of Gaussian states, whereas it can be effective in protecting coherent superpositions of both number states and Gaussian wavepackets. (review article)

  2. Metallic Biosorption Using Yeasts in Continuous Systems

    Directory of Open Access Journals (Sweden)

    Karla Miriam Hernández Mata

    2013-01-01

    Full Text Available Mining effluents were found to be the main source of pollution by heavy metals of the surface water in the San Pedro River in Sonora, Mexico. The overall objective of this study was to determine the biosorption of Zn, Cu, Mn, and Fe with yeasts isolated from San Pedro River in a continuous system. The tests conducted in two reactors packed with zeolite connected in series. The first reactor was inoculated mixing two yeasts species, and the effluent of the first reactor was fed to second reactor. Subsequently, the first reactor was fed with contaminated water of San Pedro River and effluent from this was the second reactor influent. After 40 days of the experiment a reduction of 81.5% zinc, 76.5% copper, manganese 95.5%, and 99.8% of iron was obtained. These results show that the selected yeasts are capable of biosorbing zinc, copper, manganese, and iron under these conditions.

  3. Quantifying decoherence in continuous variable systems

    CERN Document Server

    Serafini, A; Illuminati, F; De Siena, S

    2005-01-01

    We present a detailed report on the decoherence of quantum states of continuous variable systems under the action of a quantum optical master equation resulting from the interaction with general Gaussian uncorrelated environments. The rate of decoherence is quantified by relating it to the decay rates of various, complementary measures of the quantum nature of a state, such as the purity, some nonclassicality indicators in phase space and, for two-mode states, entanglement measures and total correlations between the modes. Different sets of physically relevant initial configurations are considered, including one- and two-mode Gaussian states, number states, and coherent superpositions. Our analysis shows that, generally, the use of initially squeezed configurations does not help to preserve the coherence of Gaussian states, whereas it can be effective in protecting coherent superpositions of both number states and Gaussian wave packets.

  4. Empowerment for Continuous Agent-Environment Systems

    CERN Document Server

    Jung, Tobias; Stone, Peter

    2012-01-01

    This paper develops generalizations of empowerment to continuous states. Empowerment is a recently introduced information-theoretic quantity motivated by hypotheses about the efficiency of the sensorimotor loop in biological organisms, but also from considerations stemming from curiosity-driven learning. Empowemerment measures, for agent-environment systems with stochastic transitions, how much influence an agent has on its environment, but only that influence that can be sensed by the agent sensors. It is an information-theoretic generalization of joint controllability (influence on environment) and observability (measurement by sensors) of the environment by the agent, both controllability and observability being usually defined in control theory as the dimensionality of the control/observation spaces. Earlier work has shown that empowerment has various interesting and relevant properties, e.g., it allows us to identify salient states using only the dynamics, and it can act as intrinsic reward without requi...

  5. Water SA

    African Journals Online (AJOL)

    Journal Home > Vol 43, No 2 (2017) ... WaterSA publishes refereed, original work in all branches of water science, technology and engineering. ... Water SA is the WRC's accredited scientific journal which contains original research articles ... via linearized calibration method in the upstream of Huaihe River Basin, China ...

  6. Experience in operation and maintenance of systems of electrical generation by micro turbine: Transierra S.A.

    Energy Technology Data Exchange (ETDEWEB)

    Herrera, Franz Miranda [TRANSIERRA S.A., Santa Cruz (Bolivia)

    2009-07-01

    This work tries to share the experience of throughout six years, turned into experience of operation and maintenance of micro turbines for generation electrical; same those are used in the stations of measurement of Transierra S.A. In the initial stage it would describe to the ways and characteristic operative qualities for each one of the Micro Turbines in each scene that differs throughout the four stations that the GASYRG composes, taking like game the analysis of the thermal efficiency. Next a particular description of happened events would be realized in the six translated years in faults of general and particular way, centering the attention to the analysis of the resources provided by the controllers of the equipment through registry of events. Analyses that finally would be translated in solutions to short and medium term obtaining operative continuity and provision of electrical energy indispensable for the systems of measurement and control of the stations. Finally a description of all the particular solutions and modifications that went giving problems of design which they were not contemplated by the manufacturer emanated of the necessity and shaped with the aid of the same knowledge of the equipment. (author)

  7. Avaliação da continuidade de uso do preservativo feminino em usuárias do Sistema Único de Saúde em unidades da região metropolitana de São Paulo, Brasil Evaluation of continuity of use of female condoms among users of the Brazilian National Health System (SUS: longitudinal analysis in units in the metropolitan region of São Paulo, Brazil

    Directory of Open Access Journals (Sweden)

    Suzana Kalckmann

    2009-06-01

    Full Text Available O perfil da epidemia da Aids vem exigindo alternativas que, além de prevenir a entrada do HIV, facilitem a negociação de uso com o parceiro e possibilitem dupla proteção - contra as infecções transmitidas sexualmente, inclusive a Aids, e contra a gravidez não desejada - como o preservativo feminino. O objetivo do presente estudo foi verificar se a alta aceitabilidade inicial do preservativo feminino, descrita em outros estudos, é mantida na rotina de atendimento às diferentes populações vulneráveis. Foram monitorados durante 12 meses 16 serviços do Sistema Único de Saúde da Grande São Paulo (7 serviços especializados em atendimento às doenças sexualmente transmissíveis, 6 unidades básicas de saúde e 3 projetos comunitários. Foram incluídas no estudo 2.469 mulheres, das quais 713 em serviços de atenção especializada às DST/Aids, 1.417 em unidades básicas e 339 em projetos comunitários. A análise da continuidade de uso foi realizada por tábua de sobrevida Kaplan-Meier, teste log-rank e modelo de regressão de Cox, com intervalo de confiança de 95% (IC=95%. Observou-se que, ao final do seguimento, estavam em uso contínuo do preservativo feminino 14,4% das mulheres (355. O tempo médio de uso foi de 3,55 meses (IC 95%: 3,37- 3,73. Os resultados evidenciaram que o tipo de serviço de dispensação do insumo e a frequência mensal de relações sexuais interferiram na continuidade de uso de forma estatisticamente significante. O número de mulheres que iniciaram o uso do preservativo feminino nos diferentes tipos de serviços mostrou que há uma demanda para alternativas de prevenção, e que é fundamental a criação de espaços onde elas possam ter acesso adequado a orientações e aos insumos.The new profile of the AIDS epidemic necessarily includes the implementation of alternatives which go beyond HIV prevention, meaning sexual partner negotiation and double protection: against STD (including AIDS and unplanned

  8. Perceptions of Nebraska Teachers Regarding the Transition from STARS to NeSA and Its Perceived Influence on the Implementation of a Balanced Assessment System

    Science.gov (United States)

    Isom, Jamie

    2012-01-01

    The purpose of this explanatory mixed methods study was to explore the perceptions of Nebraska teachers about their experiences in the transition from STARS to NeSA. The study explored their perceptions of the influence of the transition on implementation of a balanced assessment system. As defined by NDE, a balanced system included NeSA testing,…

  9. THE EQUATION FOR THE CONTINUOUS INGOT SOLIDIFICATION PROCESS FOR CONTROL SYSTEMS OF CONTINUOUS CASTING CASTER MNLZ

    Directory of Open Access Journals (Sweden)

    I. A. Pugachev

    2013-01-01

    Full Text Available A process of heat transfer in continuous casting mould is considered. The substantiated equations predict shell growth, temperature distributions, solidification rates and can be used for continuous casters control systems.

  10. The Sahel-Doukkala Information Network (SaDIN) – A regional online geoinformation system

    OpenAIRE

    2003-01-01

    A critical necessity to achieve international standards in public health and sustainable development is to monitor the quality of the limited groundwater resources. To provide a basis for any sort of environmental investigations, the SaDIN project creates a knowledge pool in the centre of the Chouaïb Doukkali University, El Jadida (Morocco), in collaboration with the Data Centre of the GeoForschungsZentrum Potsdam (Germany). SaDIN comprises tools for data acquisition, sample collection and mu...

  11. Development of a high power wideband polarizer for electron cyclotron current drive system in JT-60SA

    Energy Technology Data Exchange (ETDEWEB)

    Saigusa, Mikio, E-mail: saigusa@mx.ibaraki.ac.jp [Ibaraki University, Hitachi, Ibaraki 316-8511 (Japan); Oyama, Gaku; Matsubara, Fumiaki; Takii, Keita; Sai, Takuma [Ibaraki University, Hitachi, Ibaraki 316-8511 (Japan); Kobayashi, Takayuki; Moriyama, Shinichi [Japan Atomic Energy Agency, Naka, Ibaraki 311-0193 (Japan)

    2015-10-15

    Highlights: • We developed a new wideband polarizer for JT-60SA ECCD system. • The wideband polarizer is optimized for dual frequency gyrotrons (110 and 138 GHz) in JT-60SA. • The wideband polarization properties were verified at cold tests. • The preliminary high power tests have been carried out at 0.25 MW, 3 s at 110 GHz. - Abstract: A wideband polarizer consisting of a polarization twister and a circular polarizer has been developed for an electron cyclotron current driving system in JT-60SA, where the output frequencies of a dual frequency gyrotron for JT-60SA are 110 and 138 GHz. The groove depths are optimized for the dual frequencies by numerical simulations using a FDTD method and cold test results. The polarization properties of a mock-up polarizer are measured at the dual frequencies in cold tests. The cold test results suggest that all practical polarizations for ECCD experiments can be achieved at the dual frequencies. The prototype polarization twister has been tested up to 0.25 MW during 3 s at the frequency of 110 GHz.

  12. Leak before break evaluation for main steam piping system made of SA106 Gr.C

    Energy Technology Data Exchange (ETDEWEB)

    Yang, Kyoung Mo; Jee, Kye Kwang; Pyo, Chang Ryul; Ra, In Sik [Korea Power Engineering Company, Seoul (Korea, Republic of)

    1997-04-01

    The basis of the leak before break (LBB) concept is to demonstrate that piping will leak significantly before a double ended guillotine break (DEGB) occurs. This is demonstrated by quantifying and evaluating the leak process and prescribing safe shutdown of the plant on the basis of the monitored leak rate. The application of LBB for power plant design has reduced plant cost while improving plant integrity. Several evaluations employing LBB analysis on system piping based on DEGB design have been completed. However, the application of LBB on main steam (MS) piping, which is LBB applicable piping, has not been performed due to several uncertainties associated with occurrence of steam hammer and dynamic strain aging (DSA). The objective of this paper is to demonstrate the applicability of the LBB design concept to main steam lines manufactured with SA106 Gr.C carbon steel. Based on the material properties, including fracture toughness and tensile properties obtained from the comprehensive material tests for base and weld metals, a parametric study was performed as described in this paper. The PICEP code was used to determine leak size crack (LSC) and the FLET code was used to perform the stability assessment of MS piping. The effects of material properties obtained from tests were evaluated to determine the LBB applicability for the MS piping. It can be shown from this parametric study that the MS piping has a high possibility of design using LBB analysis.

  13. An Army-Centric System of Systems Analysis (SoSA) Definition

    Science.gov (United States)

    2011-02-01

    systems, we turn to the pioneer systems theorist von Bertalanffy . A system is closed if no material enters or leaves it; it is open if there is import and...Benjamin/Cummings, San Francisco, 2000. 29. von Bertalanffy , L. The Theory of Open Systems in Physics and Biology. Science 111 1950, 23–29. 30

  14. System View of Business Continuity Management

    Directory of Open Access Journals (Sweden)

    Vlasta Svata

    2013-04-01

    Full Text Available We are living in time where the impact on continuity still grows both on the side our personal lives and business activities. In the same time different international, regional, national, state and private organizations initiated to provide different actions and regulations in order to find the best solutions of this situation. The result is that there exist the whole set of different views over this problem. The main aim of this article is to map this situation, to provide the general framework of business continuity management (BCM and to discuss its main parts and their mutual relationships. Special impact is given to the integration of the business and IT oriented solutions and ways of assurance initiatives helping managers to assess the implemented solutions and their compliance to the business strategy and other existing regulations.

  15. Reinventing suggestion systems for continuous improvement

    NARCIS (Netherlands)

    Schuring, R.W.; Luijten, Harald

    2001-01-01

    This article reports an experiment to increase the effectiveness of a suggestion system by deliberately applying principles of the kaizen and performance management. Design rules for suggestion systems are derived from these theories. The suggestion system that resulted differs from traditional

  16. Reinventing suggestion systems for continuous improvement

    NARCIS (Netherlands)

    Schuring, Roel W.; Luijten, Harald

    2001-01-01

    This article reports an experiment to increase the effectiveness of a suggestion system by deliberately applying principles of the kaizen and performance management. Design rules for suggestion systems are derived from these theories. The suggestion system that resulted differs from traditional sugg

  17. SaTool - a Software Tool for Structural Analysis of Complex Automation Systems

    DEFF Research Database (Denmark)

    Blanke, Mogens; Lorentzen, Torsten

    2006-01-01

    The paper introduces SaTool, a tool for structural analysis, the use of the Matlab (R)-based implementation is presented and special features are introduced, which were motivated by industrial users. Salient features of tool are presented, including the ability to specify the behavior of a comple...

  18. Hydrogen Storage Activities at HySA from (Nano)materials to Systems

    CSIR Research Space (South Africa)

    Langmi, Henrietta W

    2012-11-01

    Full Text Available One of HySA’s missions is to deliver technologies for hydrogen storage infrastructure that meet the set cost targets and provide the best balance of safety, reliability, robustness, quality and functionality. HySA aims to develop storage...

  19. Development of a linear motion antenna for the JT-60SA ECRF system

    Energy Technology Data Exchange (ETDEWEB)

    Moriyama, Shinichi, E-mail: moriyama.shinichi@jaea.go.jp [Fusion Research and Development Directorate, Japan Atomic Energy Agency, Mukoyama 801-1, Naka, Ibaraki 311-0193 (Japan); Kobayashi, Takayuki; Isayama, Akihiko; Hoshino, Katsumichi; Suzuki, Sadaaki; Hiranai, Shinichi; Yokokura, Kenji; Sawahata, Masayuki; Terakado, Masayuki; Hinata, Jun; Wada, Kenji; Sato, Yoshikatsu [Fusion Research and Development Directorate, Japan Atomic Energy Agency, Mukoyama 801-1, Naka, Ibaraki 311-0193 (Japan)

    2013-10-15

    Highlights: ► Development of an antenna featuring linear motion (LM) concept for long pulse electron cyclotron range of frequency (ECRF) heating and current drive in JT-60SA is in progress. ► A mock-up using a metallic sliding bearing with solid lubricant was fabricated. ► A vacuum pumping test with mass analyzer showed evidence of some hydrocarbons during shaft motion. ► Injection beam profile in toroidal beam scan was checked by low power measurement with mock-up. ► Current drive characteristics with the LM antenna for typical experimental scenarios of JT-60SA have been investigated by calculation. -- Abstract: Development of an antenna that features the linear motion (LM) concept for long-pulse electron-cyclotron range of frequency heating and current drive for the JT-60SA is in progress. Combining a linearly movable first mirror and a fixed curved second mirror allows the injection-beam angle to be controlled. Cooling water is fed through the drive shaft for the first mirror and through the fixed support for the second mirror. The shaft support structure uses a metallic sliding bearing with a solid lubricant. The sliding bearing supports combined linear and rotational motion, whereas a conventional ball bearing supports either linear or rotational motion. Therefore, the sliding bearing offers the advantage of reducing the support-structure volume, which is important in the design of the relatively narrow port duct of the JT-60SA. Recently, the sliding bearing has been installed into the mockup. Results of a vacuum test with a mass analyzer indicate the presence of hydrocarbons during shaft motion. The injection-beam profile obtained from a toroidal beam scan is checked against low-power measurements taken on the mockup. Finally, for typical JT-60SA experimental scenarios, heating- and current-drive characteristics of the LM antenna are investigated theoretically.

  20. Interaction between the Natural Components in Danhong Injection (DHI) with Serum Albumin (SA) and the Influence of the Coexisting Multi-Components on the SaB-BSA Binding System: Fluorescence and Molecular Docking Studies.

    Science.gov (United States)

    Hao, Jia; Zhang, Yingyue; Wang, Xingrui; Yan, Huo; Liu, Erwei; Gao, Xiumei

    2015-01-01

    Danhong injection (DHI) is a widely used Chinese Materia Medica standardized product for the clinical treatment of ischemic encephalopathy and coronary heart disease. The bindings of eight natural components in DHI between bovine serum albumin (BSA) were studied by fluorescence spectroscopy technology and molecular docking. According to the results, the quenching process of salvianolic acid B and hydroxysafflor yellow A was a static quenching procedure through the analysis of quenching data by the Stern-Volmer equation, the modified Stern-Volmer equation, and the modified Scatchard equation. Meanwhile, syringin (Syr) enhanced the fluorescence of BSA, and the data were analyzed using the Lineweaver-Burk equation. Molecular docking suggested that all of these natural components bind to serum albumin at the site I location. Further competitive experiments of SaB confirmed the result of molecular docking studies duo to the displacement of warfarin by SaB. Base on these studies, we selected SaB as a research target because it presented the strongest binding ability to BSA and investigated the influence of the multi-components coexisting in DHI on the interaction between the components of the SaB-BSA binding system. The participation of these natural components in DHI affected the interaction between the components of the SaB-BSA system. Therefore, when DHI is used in mammals, SaB is released from serum albumin more quickly than it is used alone. This work would provide a new experiment basis for revealing the scientific principle of compatibility for Traditional Chinese Medicine.

  1. The impact of the maintenance management system: a case study of the PetroSA GTL refinery

    Directory of Open Access Journals (Sweden)

    Mahlangu, Bafana Petrus

    2015-11-01

    Full Text Available This research study investigated the impact of the maintenance management system (MMS on production output and profitability (PO&P at the PetroSA GTL refinery, a state-owned company. The two groups that participated were the maintenance group, consisting of 56 respondents, and the production group, with 38 respondents. The main findings of the research study suggested that the MMS impacts positively on PO&P at the PetroSA GTL refinery. The maintenance scorecard assessment tool – consisting of six perspectives – was used to assess the gap between the MMS and PO&P. The positivism paradigm, the deductive process, a cross-sectional quantitative survey, and descriptive statistics were used to conduct the research study.

  2. Toward a Continuous Intravascular Glucose Monitoring System

    Directory of Open Access Journals (Sweden)

    Pedro Irazoqui

    2010-12-01

    Full Text Available Proof-of-concept studies that display the potential of using a glucose-sensitive hydrogel as a continuous glucose sensor are presented. The swelling ratio, porosity, and diffusivity of the hydrogel increased with glucose concentration. In glucose solutions of 50, 100, 200, and 300 mg/dL, the hydrogel swelling ratios were 4.9, 12.3, 15.9, and 21.7, respectively, and the swelling was reversible. The impedance across the hydrogel depended solely on the thickness and had an average increase of 47 W/mm. The hydrogels exposed to a hyperglycemic solution were more porous than the hydrogels exposed to a normal glycemic solution. The diffusivity of 390 Da MW fluorescein isothiocyanate in hydrogels exposed to normal and hyperglycemic solutions was examined using fluorescence recovery after photobleaching and was found to be 9.3 × 10−14 and 41.4 × 10−14 m2/s, respectively, compared to 6.2 × 10−10 m2/s in glucose solution. There was no significant difference between the permeability of hydrogels in normal and hyperglycemic glucose solutions with averages being 5.26 × 10−17 m2 and 5.80 × 10−17 m2, respectively, which resembles 2–4% agarose gels. A prototype design is presented for continuous intravascular glucose monitoring by attaching a glucose sensor to an FDA-approved stent.

  3. Modelling and Model-Based-Designed PID Control of the JT-60SA Cryogenic System Using the Simcryogenics Library

    Science.gov (United States)

    Bonne, F.; Bonnay, P.; Hoa, C.; Mahoudeau, G.; Rousset, B.

    2017-02-01

    This papers deals with the Japan Torus-60 Super Advanced fusion experiment JT-60SA cryogenic system. A presentation of the JT-60SA cryogenic system model, from 300K to 4.4K -using the Matlab/Simulink/Simscape Simcryogenics library- will be given. As a first validation of our modelling strategy, the obtained operating point will be compared with the one obtained from HYSYS simulations. In the JT60-SA tokamak, pulsed heat loads are expected to be coming from the plasma and must be handled properly, using both appropriate refrigerator architecture and appropriate control model, to smooth the heat load. This paper presents model-based designed PID control schemes to control the helium mass inside the phase separator. The helium mass inside the phase separator as been chosen to be the variable of interest in the phase separator since it is independent of the pressure which can vary from 1 bar to 1.8 bar during load smoothing. Dynamics simulations will be shown to assess the legitimacy of the proposed strategy. This work is partially supported through the French National Research Agency (ANR), task agreement ANR-13-SEED-0005.

  4. Fractional System Identification: An Approach Using Continuous Order-Distributions

    Science.gov (United States)

    Hartley, Tom T.; Lorenzo, Carl F.

    1999-01-01

    This paper discusses the identification of fractional- and integer-order systems using the concept of continuous order-distribution. Based on the ability to define systems using continuous order-distributions, it is shown that frequency domain system identification can be performed using least squares techniques after discretizing the order-distribution.

  5. Supplement Analysis for the Transmission System Vegetation Management Program FEIS (DOE/EIS-0285/SA-142- KeelerOregon City #2)

    Energy Technology Data Exchange (ETDEWEB)

    Barndt, Shawn L. [Bonneville Power Administration, Portland, OR (United States)

    2003-04-04

    Supplement Analysis for the Transmission System Vegetation Management Program FEIS (DOE/EIS-0285/SA-142- KeelerOregon #2). Bonneville Power Administration proposes to remove vegetation alongside Transmission Right-of-Ways

  6. Instability of asymmetric continuous shaft system

    Science.gov (United States)

    Srinath, R.; Sarkar, Abhijit; Sekhar, A. S.

    2016-11-01

    In this work, the governing equation of asymmetric continuous shaft in inertial frame of reference is studied. In particular, determination of the parameter ranges for the stability or instability of the shaft response is the focus of the present work. The governing equations are a fourth-order coupled partial differential equations containing time dependent coefficients. The equations are non-dimensionalized in terms of two parameters related to the average moment of inertia and the difference of moments of inertia about the principal axes. Using the latter as the asymptotic parameter and employing modal superposition, a formal methodology based on perturbation methods is developed to ascertain the stability and instability characteristics. The methodology is applicable to shafts subjected to some of the classical boundary conditions viz. simply supported, cantilever, and fixed-fixed. Similar stability curves are obtained for each mode for these different boundary conditions. The novel non-dimensionalization scheme chosen leads to the stability boundaries as well as the loci of varying speeds to be in the form of straight lines. The intersection of these lines determine the stable and unstable speed ranges of different asymmetric shafts. The results are generalized for different material and geometric properties of the shaft.

  7. A type system for Continuation Calculus

    Directory of Open Access Journals (Sweden)

    Herman Geuvers

    2014-09-01

    Full Text Available Continuation Calculus (CC, introduced by Geron and Geuvers, is a simple foundational model for functional computation. It is closely related to lambda calculus and term rewriting, but it has no variable binding and no pattern matching. It is Turing complete and evaluation is deterministic. Notions like "call-by-value" and "call-by-name" computation are available by choosing appropriate function definitions: e.g. there is a call-by-value and a call-by-name addition function. In the present paper we extend CC with types, to be able to define data types in a canonical way, and functions over these data types, defined by iteration. Data type definitions follow the so-called "Scott encoding" of data, as opposed to the more familiar "Church encoding". The iteration scheme comes in two flavors: a call-by-value and a call-by-name iteration scheme. The call-by-value variant is a double negation variant of call-by-name iteration. The double negation translation allows to move between call-by-name and call-by-value.

  8. Supporting Continuous Improvement in California's Education System

    Science.gov (United States)

    Darling-Hammond, Linda; Plank, David N.

    2015-01-01

    California's new accountability system originated in the radical decentralization of power and authority from Sacramento to local schools and their communities brought about by the Legislature's adoption of the Local Control Funding Formula (LCFF) in 2013. Under California's previous accountability policies and the federal "No Child Left…

  9. Stability Test for 2-D Continuous-Discrete Systems

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    Models of 2-D continuous-discrete systems are introduced, which can be used to describe some complex systems. Different from classical 2-D continuous systems or 2-D discrete systems, the asymptotic stability of the continuous-discrete systems is determined by Hurwitz-Schur stability (hybrid one) of 2-D characteristic polynomials of the systems. An algebraic algorithm with simpler test procedure for Hurwitz-Schur stability test of 2-D polynomials is developed. An example to illustrate the applications of the test approach is provided.

  10. Vigilância ambiental em saúde e sua implantação no Sistema Único de Saúde Environmental surveillance in health in Brazil's Unified Health System

    Directory of Open Access Journals (Sweden)

    Christovam Barcellos

    2006-02-01

    Full Text Available A incorporação da vigilância ambiental no campo das políticas públicas de saúde é uma demanda relativamente recente no Brasil. Um dos principais desafios da vigilância ambiental em saúde é a definição do seu objeto e a especificidade de suas ações. O conceito ampliado de exposição, tratado não como um atributo da pessoa, mas do conjunto de relações complexas entre a sociedade e o ambiente, é central para a definição de indicadores e para a orientação da prática de vigilância ambiental. Entre as dificuldades encontradas para sua efetivação no Sistema Único de Saúde estão a necessidade de reestruturação das ações de vigilância em saúde e a formação de equipes multidisciplinares, com capacidade de diálogo com outros setores, além da construção de sistemas de informação capazes de auxiliar a análise de situações de saúde e a tomada de decisões. Nesse sentido, foi realizada uma revisão do objeto e conceitos da vigilância ambiental em saúde, bem como identificados os desafios para a sua implantação no Sistema Único de Saúde.The incorporation of environmental surveillance in the field of public health policies is a relatively recent demand in Brazil. One of the major challenges in environmental health surveillance is defining its object and the specificity of its practice. The expanded concept of exposure, treated as a set of complex relations between a society and the environment, and not as a personal attribute, is central to the definition of indicators and should guide the practice of environmental surveillance in the health sector. Among the difficulties encountered in applying this concept within the Brazilian Health System, is the need to restructure health surveillance activities and to form multidisciplinary teams capable of dialoguing with other sectors. Furthermore, information systems capable of aiding in health situation analysis and decision making must be constructed. Taking this

  11. A completion construction for continuous dynamical systems

    CERN Document Server

    Calcines, J M Garcia; Rodriguez, M T Rivas

    2012-01-01

    In this work we construct the $\\Co^{\\r}$-completion and $\\Co^{\\l}$-completion of a dynamical system. If $X$ is a flow, we construct canonical maps $X\\to \\Co^{\\r}(X)$ and $X\\to \\Co^{\\l}(X)$ and when these maps are homeomorphism we have the class of $\\Co^{\\r}$-complete and $\\Co^{\\l}$-complete flows, respectively. In this study we find out many relations between the topological properties of the completions and the dynamical properties of a given flow. In the case of a complete flow this gives interesting relations between the topological properties (separability properties, compactness, convergence of nets, etc.) and dynamical properties (periodic points, omega limits, attractors, repulsors, etc.).

  12. Reference design of the power supply system for the resistive-wall-mode control in JT-60SA

    Energy Technology Data Exchange (ETDEWEB)

    Ferro, Alberto, E-mail: alberto.ferro@igi.cnr.it [Consorzio RFX, C.so Stati Uniti 4, 35127 Padova (Italy); Gaio, Elena [Consorzio RFX, C.so Stati Uniti 4, 35127 Padova (Italy); Novello, Luca [Fusion for Energy, Broader Development of Fusion Department, Boltzmannstr 2, 85748 Garching (Germany); Matsukawa, Makoto; Shimada, Katsuhiro; Kawamata, Yoichi; Takechi, Manabu [Japan Atomic Energy Agency, Naka Fusion Institute, 801-1 Mukoyama, Naka, Ibaraki 311-019 (Japan)

    2015-10-15

    Highlights: • In JT-60SA, a power supply system (RWM-PS) will feed 18 coils to control the RWMs. • One power amplifier per coil will follow an arbitrary real-time reference. • Very fast dynamics is required (current bandwidth: 3 kHz; latency: 50 μs). • The requirements of the RWM-PS are updated and design solutions discussed. • The reference design of the RWM-PS is based on H-bridges operated at 20 – 30 kHz. - Abstract: The mission of JT-60SA, the satellite Tokamak under construction in Naka (Japan), includes the attainment of steady-state high-beta plasmas. For this purpose, an active control system based on 18 in-vessel sector coils (SC) is foreseen to suppress the resistive wall modes (RWM). Each coil will be independently fed by a dedicated converter, rated for 300 A and 240 V, which has to produce the required current/voltage following in real time the reference provided by the JT-60SA MHD Controller. To minimize the current rating, these converters shall be sufficiently fast to avoid an excessive growth of the RWM. This requires a very high dynamic performance, largely beyond that of standard industrial applications. This paper firstly reports the latest results of the studies on the requirements of the RWM active control system. Then, the reference design of the power supply system is presented, including the ac/dc conversion stage, the fast converters and the control section. The advantages of the proposed scheme are discussed and the main electrical parameters are presented.

  13. Linear optimal control of continuous time chaotic systems.

    Science.gov (United States)

    Merat, Kaveh; Abbaszadeh Chekan, Jafar; Salarieh, Hassan; Alasty, Aria

    2014-07-01

    In this research study, chaos control of continuous time systems has been performed by using dynamic programming technique. In the first step by crossing the response orbits with a selected Poincare section and subsequently applying linear regression method, the continuous time system is converted to a discrete type. Then, by solving the Riccati equation a sub-optimal algorithm has been devised for the obtained discrete chaotic systems. In the next step, by implementing the acquired algorithm on the quantized continuous time system, the chaos has been suppressed in the Rossler and AFM systems as some case studies.

  14. Determining expected behaviour of fraudsters for a continuous audit system

    Directory of Open Access Journals (Sweden)

    Mathew A. Thomas

    2012-06-01

    Full Text Available This research attempts to determine the behaviour of fraudsters in a continuous audit system where the fraudsters have multiple options for committing fraud. The system is modelled as a Continuous Time Markov Chain where the state changes are caused by the fraudster's actions. The model uses a dynamic game with probabilistic transitions to determine the expected behaviour of the fraudster.

  15. Saúde pública, rede básica e o sistema de saúde brasileiro Public health, local health units, and the Brazilian health system

    Directory of Open Access Journals (Sweden)

    Emerson E. Merhy

    1993-06-01

    Full Text Available Este artigo focaliza o desenvolvimento da saúde pública no Brasil com o intuito de analisar os problemas com os quais se depara o processo atual de municipalização dos serviços de saúde. Argumenta-se que a postura neoliberal ou conservadora tornou-se incapaz de articular uma proposta viável para o sistema de saúde. Por outro lado, a proposta reformista concentra sua atenção no sistema de saúde e sua administração, tendo como modelo a postura positivista das ciências naturais e administrativas. Argumenta-se que apenas uma mudança radical no paradigma da medicina, na qual a dimensão coletiva e social predomina sobre a dimensão biológica e individual, permitiria conciliá-la com as necessidades de saúde da população.This article focuses on the development of public health in Brazil, with the aim of analyzing the present process of decentralization of health care. The authors argue that the neoliberal or conservative position is unable to offer a reasonable solution to problems in the health care system. On the other hand, the reformist position concentrates its attention on the health system and its administration, taking as its model a positivistic approach to natural and administrative sciences. The authors further argue that only a radical change in the prevailing medical paradigm and a predominance of social over biological aspects would meet the health needs of the population.

  16. Continuity in weak topology: higher order linear systems of ODE

    Institute of Scientific and Technical Information of China (English)

    ZHANG MeiRong

    2008-01-01

    We will introduce a type of Fredholm operators which are shown to have a certain continuity in weak topologies. From this, we will prove that the fundamental matrix solutions of k-th,k≥ 2, order linear systems of ordinary differential equations are continuous in coefficient matrixes with weak topologies. Consequently, Floquet multipliers and Lyapunov exponents for periodic systems are continuous in weak topologies. Moreover, for the scalar Hill's equations, Sturm-Liouville eigenvalues,periodic and anti-periodic eigenvalues, and rotation numbers are all continuous in potentials with weak topologies. These results will lead to many interesting variational problems.

  17. Continuation of periodic orbits in symmetric Hamiltonian and conservative systems

    Science.gov (United States)

    Galan-Vioque, J.; Almaraz, F. J. M.; Macías, E. F.

    2014-12-01

    We present and review results on the continuation and bifurcation of periodic solutions in conservative, reversible and Hamiltonian systems in the presence of symmetries. In particular we show how two-point boundary value problem continuation software can be used to compute families of periodic solutions of symmetric Hamiltonian systems. The technique is introduced with a very simple model example (the mathematical pendulum), justified with a theoretical continuation result and then applied to two non trivial examples: the non integrable spring pendulum and the continuation of the figure eight solution of the three body problem.

  18. Linear generalized synchronization of continuous-time chaotic systems

    Energy Technology Data Exchange (ETDEWEB)

    Lu Junguo E-mail: jglu@sjtu.edu.cn; Xi Yugeng

    2003-08-01

    This paper develops a general approach for constructing a response system to implement linear generalized synchronization (GS) with the drive continuous-time chaotic system. Some sufficient conditions of global asymptotic linear GS between the drive and response continuous-time chaotic systems are attained from rigorously modern control theory. Finally, we take Chua's circuit as an example for illustration and verification.

  19. Sindicalismo, SUS e planos de saúde Trade unionism, Unified Health System (SUS and private health insurance

    Directory of Open Access Journals (Sweden)

    José Augusto Pina

    2006-09-01

    Full Text Available Este artigo discute a interlocução do sindicalismo brasileiro com o Sistema Único de Saúde (SUS e os planos e seguros privados de saúde. São ponderadas algumas teses na Saúde Coletiva à luz de estudos mais recentes nas Ciências Sociais sobre o sindicalismo e realizada análise documental para o caso da Central Única dos Trabalhadores (CUT, tomado aqui como referência. Aponta-se a necessidade de considerar os pesos relativos que a ação sindical atribuiu a cada um dos aspectos da relação, SUS e planos privados de saúde, pelas distintas conjunturas do país. O conflito entre trabalhadores e empresas somado ao desemprego e à precarização do trabalho expõe os limites das coberturas assistenciais privadas e impele a representação sindical a pleitear a intervenção estatal. O trabalho refletiu sobre as distintas modalidades de ação sindical na empresa e no Estado. A complexidade dessa dinâmica fez emergir um setor sindical interessado na gestão da previdência complementar e dos planos de saúde e, ao mesmo tempo, recria as circunstâncias e traz novas possibilidades de as organizações sindicais se colocarem na cena política e aglutinar os interesses de amplos segmentos dos trabalhadores para pressionar o Estado na defesa da melhoria do sistema público de saúde.The article intends to discuss the patterns of interlocution between the Brazilian trade unionism, the public health system (SUS and the private health insurance sector. Some thesis originated in the Public Health area about the subject are debated, in the light of more recent Social Science's studies concerned the Brazilian unionism. It presents a documentary analysis for the case of the largest National Workers Organization, named CUT. The need to discuss the problem in distinct political and economic conjunctures of the country is pointed out. The conflicts between the workers and the companies, added to the unemployment and deregulation of the labor markets

  20. Revisiting the Complexity of Stability of Continuous and Hybrid Systems

    Science.gov (United States)

    2014-07-16

    logarithm, trigonometric functions , and solution functions of Lipschitz-continuous ordinary differential equations. More formally, LRF = 〈F ,>〉 represents... trigonometric functions , exponential functions , etc. Consequently, for most nonlinear continuous systems of practical interest, the stability problem is in... functions are computed, as studied in computable analysis [14, 12, 8]. However, while complexity for real functions is best measured in the model of

  1. Immobilized yeast cell systems for continuous fermentation applications.

    Science.gov (United States)

    Verbelen, Pieter J; De Schutter, David P; Delvaux, Filip; Verstrepen, Kevin J; Delvaux, Freddy R

    2006-10-01

    In several yeast-related industries, continuous fermentation systems offer important economical advantages in comparison with traditional systems. Fermentation rates are significantly improved, especially when continuous fermentation is combined with cell immobilization techniques to increase the yeast concentration in the fermentor. Hence the technique holds a great promise for the efficient production of fermented beverages, such as beer, wine and cider as well as bio-ethanol. However, there are some important pitfalls, and few industrial-scale continuous systems have been implemented. Here, we first review the various cell immobilization techniques and reactor setups. Then, the impact of immobilization on cell physiology and fermentation performance is discussed. In a last part, we focus on the practical use of continuous fermentation and cell immobilization systems for beer production.

  2. ENTROPY FUNCTIONAL FOR CONTINUOUS SYSTEMS OF FINITE ENTROPY

    Institute of Scientific and Technical Information of China (English)

    M. Rahimi A. Riazi

    2012-01-01

    In this article,we introduce the concept of entropy functional for continuous systems on compact metric spaces,and prove some of its properties.We also extract the Kolmogorov entropy from the entropy functional.

  3. Development of Variable Camber Continuous Trailing Edge Flap System

    Science.gov (United States)

    Urnes, Jim, Sr.; Nguyen, Nhan T.; Dykman, John

    2012-01-01

    This presentation describes the current status of the joint NASA/Boeing collaboration on the development of a variable camber continuous trailing edge flap system for use in wing shaping control for cruise drag reduction.

  4. Statistics of resonances in one-dimensional continuous systems

    Indian Academy of Sciences (India)

    Joshua Feinberg

    2009-09-01

    We study the average density of resonances (DOR) of a disordered one-dimensional continuous open system. The disordered system is semi-infinite, with white-noise random potential, and it is coupled to the external world by a semi-infinite continuous perfect lead. Our main result is an integral representation for the DOR which involves the probability density function of the logarithmic derivative of the wave function at the contact point.

  5. Saúde mental e a continuidade do cuidado em centros de saúde de Belo Horizonte, MG Salud mental y la continuidad del cuidado en centros de salud de una ciudad en Sudeste de Brasil Mental health and continuity of care in healthcare centers in a city of Southeastern Brazil

    Directory of Open Access Journals (Sweden)

    Graziella Lage Oliveira

    2008-08-01

    Full Text Available OBJETIVO: Analisar os fatores associados à continuidade do cuidado em saúde mental de pacientes encaminhados a centros de saúde. MÉTODOS: Foi conduzido um estudo de seguimento de 98 pacientes encaminhados a oito centros de saúde com equipe de saúde mental da área de abrangência de um centro de referência à saúde mental, em Belo Horizonte, MG, atendidos entre 2003 e 2004. Variáveis sociodemográficas, clínicas e referentes à continuidade foram descritas e em seguida comparadas, utilizando o teste do qui-quadrado. RESULTADOS: Após o encaminhamento, 35 pacientes não compareceram para o primeiro atendimento nos centros de saúde. Dos que o fizeram, 38 continuaram em tratamento. Retornar ao centro de referência para nova consulta após o encaminhamento e ter tido mais de dois encaminhamentos foram fatores facilitadores da continuidade do cuidado. Nenhuma característica individual esteve associada à continuidade. CONCLUSÕES: Os achados sugerem haver uma falha na proposta da linha de cuidado. A continuidade do tratamento parece estar mais relacionada a fatores referentes ao serviço do que a características do paciente.OBJETIVO: Analizar los factores asociados a la continuidad del cuidado en salud mental de pacientes encaminados a centros de salud. MÉTODOS: Fue realizado un estudio de seguimiento de 98 pacientes encaminados a ocho centros de salud con equipo de salud mental del área de alcance de un centro de referencia de salud mental, en Belo Horizonte, Sudeste de Brasil, atendidos entre 2003 e 2004. Variables sociodemográficas, clínicas y referentes a la continuidad fueron descritas y en seguida comparadas, utilizando el teste do qui-cuadrado. RESULTADOS: Después del encaminamiento, 35 pacientes no acudieron para la primera atención en centros de salud. De los que hicieron, 38 continuaron en tratamiento. Retornar al centro de referencia para nueva consulta después del encaminamiento haber tenido más de dos

  6. Effects of mutual coupling on the channel capacity of MIMO/SA multi-antenna system%互耦效应对MIMO/SA多天线系统信道容量的影响

    Institute of Scientific and Technical Information of China (English)

    郭爱煌; 肖法; 黄宇胜; 尚秀辉

    2011-01-01

    多输入多输出/智能天线(multiple input multiple output/smart antenna,MIMO/SA)系统是4G的关键技术之一,多天线的互耦效应是影响MIMO/SA多天线系统性能的主要问题.建立了MIMO与SA相结合的多天线系统模型,推导了互耦效应影响下空间相关系数和信道容量的表达式;通过电磁场数值计算和蒙特卡罗方法仿真MIMO/SA多天线系统的各态历经信道容量.结果表明:在典型的角度谱分布下改变天线间距,考虑互耦效应的信道容量围绕无互耦效应时的信道容量上下振荡;基站天线阵列间距增大信道容量持续增大,移动台天线阵列间距增大到0.5倍波长后信道容量基本保持不变;互耦效应增大信道的空域相关性,从而降低信道容量.%Multiple input multiple output and smart antenna (MIMO/SA) system is one of the key technologies for the fourth generation mobile communications system, mutual coupling is the main factor which affects the performance of MIMO/SA multi-antenna systems. A combination model of M1MO and SA is presented. With the existing of mutual coupling effects the expressions of spatial correlation and channel capacity are derived. The ergodic capacity of MIMO/SA multi-antenna systems is simulated using electromagnetic numeric method and Monte Carlo method. The results show that in the typical power azimuth spectrum distribution, the channel capacity which takes mutual coupling into account oscillates up and down around the channel capacity without mutual coupling while changing the distance of the antennas; the channel capacity increases continually while increasing the distance of base station antenna array; when antennas distance of the mobile station is farther than 0. 5 wavelength the channel capacity remains almost the same even though the antenna array distance increases; and mutual coupling increases the channel spatial correlation of MIMO/SA multi-antenna systems and thus reduces the channel capacity.

  7. Control systems engineering in continuous pharmaceutical manufacturing. May 20-21, 2014 Continuous Manufacturing Symposium.

    Science.gov (United States)

    Myerson, Allan S; Krumme, Markus; Nasr, Moheb; Thomas, Hayden; Braatz, Richard D

    2015-03-01

    This white paper provides a perspective of the challenges, research needs, and future directions for control systems engineering in continuous pharmaceutical processing. The main motivation for writing this paper is to facilitate the development and deployment of control systems technologies so as to ensure quality of the drug product. Although the main focus is on small-molecule pharmaceutical products, most of the same statements apply to biological drug products. An introduction to continuous manufacturing and control systems is followed by a discussion of the current status and technical needs in process monitoring and control, systems integration, and risk analysis. Some key points are that: (1) the desired objective in continuous manufacturing should be the satisfaction of all critical quality attributes (CQAs), not for all variables to operate at steady-state values; (2) the design of start-up and shutdown procedures can significantly affect the economic operation of a continuous manufacturing process; (3) the traceability of material as it moves through the manufacturing facility is an important consideration that can at least in part be addressed using residence time distributions; and (4) the control systems technologies must assure quality in the presence of disturbances, dynamics, uncertainties, nonlinearities, and constraints. Direct measurement, first-principles and empirical model-based predictions, and design space approaches are described for ensuring that CQA specifications are met. Ways are discussed for universities, regulatory bodies, and industry to facilitate working around or through barriers to the development of control systems engineering technologies for continuous drug manufacturing. Industry and regulatory bodies should work with federal agencies to create federal funding mechanisms to attract faculty to this area. Universities should hire faculty interested in developing first-principles models and control systems technologies for

  8. Quantum Correlations Relativity for Continuous-Variables Bipartite Systems

    CERN Document Server

    Dugic, M; Jeknic-Dugic, J

    2011-01-01

    Based on the so-called Entanglement Relativity, we point out relativity of the more general non-classical (quantum) correlations for the continuous-variables bipartite systems. Our observation points out that quantum processing resources based on the non-classical correlations (non-zero quantum discord) are ubiquitous in such systems.

  9. Method and system for continuous atomic layer deposition

    Energy Technology Data Exchange (ETDEWEB)

    Elam, Jeffrey W.; Yanguas-Gil, Angel; Libera, Joseph A.

    2017-03-21

    A system and method for continuous atomic layer deposition. The system and method includes a housing, a moving bed which passes through the housing, a plurality of precursor gases and associated input ports and the amount of precursor gases, position of the input ports, and relative velocity of the moving bed and carrier gases enabling exhaustion of the precursor gases at available reaction sites.

  10. Abstraction of Continuous Dynamical Systems Utilizing Lyapunov Functions

    DEFF Research Database (Denmark)

    Sloth, Christoffer; Wisniewski, Rafal

    2010-01-01

    This paper considers the development of a method for abstracting continuous dynamical systems by timed automata. The method is based on partitioning the state space of dynamical systems with invariant sets, which form cells representing locations of the timed automata. To enable verification of t...

  11. Optical designs of reflection and refraction collection optics for a JT-60SA core Thomson scattering system.

    Science.gov (United States)

    Tojo, H; Hatae, T; Hamano, T; Sakuma, T; Itami, K

    2013-09-01

    Collection optics for core measurements in a JT-60SA Thomson scattering system were designed. The collection optics will be installed in a limited space and have a wide field of view and wide wavelength range. Two types of the optics are therefore suggested: refraction and reflection types. The reflection system, with a large primary mirror, avoids large chromatic aberrations. Because the size limit of the primary mirror and vignetting due to the secondary mirror affect the total collection throughput, conditions that provide the high throughput are found through an optimization. A refraction system with four lenses forming an Ernostar system is also employed. The use of high-refractive-index glass materials enhances the freedom of the lens curvatures, resulting in suppression of the spherical and coma aberration. Moreover, sufficient throughput can be achieved, even with smaller lenses than that of a previous design given in [H. Tojo, T. Hatae, T. Sakuma, T. Hamano, K. Itami, Y. Aida, S. Suitoh, and D. Fujie, Rev. Sci. Instrum. 81, 10D539 (2010)]. The optical resolutions of the reflection and refraction systems are both sufficient for understanding the spatial structures in plasma. In particular, the spot sizes at the image of the optics are evaluated as ~0.3 mm and ~0.4 mm, respectively. The throughput for the two systems, including the pupil size and transmissivity, are also compared. The results show that good measurement accuracy (refraction system.

  12. CREATION OF INFORMATION-ANALYTICAL SYSTEM OF CONTINUOUS GRADED ROLLING

    Directory of Open Access Journals (Sweden)

    S. M. Zhuchkov

    2009-01-01

    Full Text Available The computer means allowing to ca n y out of analytical research of process continuous rolling on mills with the various technological circuits of manufacture is created. With the help of the developed information-analytical system continuous rolling, the urgent tasks of manufacture of hire on rolling mills, in particular, decrease of consumption of power resources can be successfully decided during continuous rolling at the expense of optimization existing or development of the new technological circuits of manufacture of hire.

  13. Classicality from zero discord for continuous-variables bipartite systems

    CERN Document Server

    Arsenijevic, M; Dugic, M

    2012-01-01

    Quantum information resources quantified by non-zero discord are ubiquitous for the continuous-variables bipartite systems. Complementary to this, we investigate the zero-discord-defined classicality for the different structures (decompositions into subsystems) of such systems. We point out complexity and subtlety of the task and we construct a model-structure closely resembling the classical systems not supporting quantum information processing.

  14. Continuous-terahertz-wave molecular imaging system for biomedical applications

    Science.gov (United States)

    Zhang, Rui; Zhang, Liangliang; Wu, Tong; Wang, Ruixue; Zuo, Shasha; Wu, Dong; Zhang, Cunlin; Zhang, Jue; Fang, Jing

    2016-07-01

    Molecular imaging techniques are becoming increasingly important in biomedical research and potentially in clinical practice. We present a continuous-terahertz (THz)-wave molecular imaging system for biomedical applications, in which an infrared (IR) laser is integrated into a 0.2-THz reflection-mode continuous-THz-wave imaging system to induce surface plasmon polaritons on the nanoparticles and further improve the intensity of the reflected signal from the water around the nanoparticles. A strong and rapid increment of the reflected THz signal in the nanoparticle solution upon the IR laser irradiation is demonstrated, using either gold or silver nanoparticles. This low-cost, simple, and stable continuous-THz-wave molecular imaging system is suitable for miniaturization and practical imaging applications; in particular, it shows great promise for cancer diagnosis and nanoparticle drug-delivery monitoring.

  15. Continuous hydroponic wheat production using a recirculating system

    Science.gov (United States)

    Mackowiak, C. L.; Owens, L. P.; Hinkle, C. R.; Prince, R. P.

    1989-01-01

    Continuous crop production, where plants of various ages are growing simultaneously in a single recirculating nutrient solution, is a possible alternative to batch production in a Controlled Ecological Life Support System. A study was conducted at John F. Kennedy Space Center where 8 trays (0.24 sq m per tray) of Triticum aestivum L. Yecora Rojo were grown simultaneously in a growth chamber at 23 C, 65 percent relative humidity, 1000 ppm CO2, continuous light, with a continuous flow, thin film nutrient delivery system. The same modified Hoagland nutrient solution was recirculated through the plant trays from an 80 L reservoir throughout the study. It was maintained by periodic addition of water and nutrients based on chemical analyses of the solution. The study was conducted for 216 days, during which 24 trays of wheat were consecutively planted (one every 9 days), 16 of which were grown to maturity and harvested. The remaining 8 trays were harvested on day 216. Grain yields averaged 520 g m(exp -2), and had an average edible biomass of 32 percent. Consecutive yields were unaffected by nutrient solution age. It was concluded that continual wheat production will work in this system over an extended period of time. Certain micronutrient deficiencies and toxicities posed problems and must be addressed in future continuous production systems.

  16. Abstraction of Continuous Dynamical Systems Utilizing Lyapunov Functions

    DEFF Research Database (Denmark)

    Sloth, Christoffer; Wisniewski, Rafal

    2010-01-01

    This paper considers the development of a method for abstracting continuous dynamical systems by timed automata. The method is based on partitioning the state space of dynamical systems with invariant sets, which form cells representing locations of the timed automata. To enable verification...... of the dynamical system based on the abstraction, conditions for obtaining sound, complete, and refinable abstractions are set up. It is proposed to partition the state space utilizing sub-level sets of Lyapunov functions, since they are positive invariant sets. The existence of sound abstractions for Morse......-Smale systems and complete and refinable abstractions for linear systems are shown....

  17. Consensus protocol for multi-agent continuous systems

    Institute of Scientific and Technical Information of China (English)

    Tan Fu-Xiao; Guan Xin-Ping; Liu De-Rong

    2008-01-01

    Based on the algebraic graph theory,the networked multi-agent continuous systems are investigated.Firstly,the digraph(directed graph)represents the topology of a networked system,and then a consensus convergence criterion of system is proposed.Secondly,the issue of stability of multi-agent systems and the consensus convergence problem of information states are all analysed.Furthermore,the Consensus equilibrium point of system is proved to be global and asymptotically reach the convex combination of initial states.Finally,two examples are taken to show the effectiveness of the results obtained in this paper.

  18. Existence of homoclinic connections in continuous piecewise linear systems.

    Science.gov (United States)

    Carmona, Victoriano; Fernández-Sánchez, Fernando; García-Medina, Elisabeth; Teruel, Antonio E

    2010-03-01

    Numerical methods are often used to put in evidence the existence of global connections in differential systems. The principal reason is that the corresponding analytical proofs are usually very complicated. In this work we give an analytical proof of the existence of a pair of homoclinic connections in a continuous piecewise linear system, which can be considered to be a version of the widely studied Michelson system. Although the computations developed in this proof are specific to the system, the techniques can be extended to other piecewise linear systems.

  19. A generalized scheme for designing multistable continuous dynamical systems

    Indian Academy of Sciences (India)

    PAL SANTINATH; SAHOO BANSHIDHAR; PORIA SWARUP

    2016-06-01

    In this paper, a generalized scheme is proposed for designing multistable continuous dynamical systems. The scheme is based on the concept of partial synchronization of states and the concept of constants of motion. The most important observation is that by coupling two mdimensional dynamical systems, multistable nature can be obtained if i number of variables of the two systems are completely synchronized and j number of variables keep a constant difference between them i.e., their differences are constants of motion, where $i+j = m$ and $1 \\le i, j \\le m−1$. The proposed scheme is illustrated by taking coupled Lorenz systems and coupled chaotic Lorenzlike systems. According to the scheme, two coupled systems reduce to single modified system withsome initial condition-dependent parameters. Time evolution plots, phase diagrams, variation of maximum Lyapunov exponent and bifurcation diagrams of the systems are presented to show the multistable nature of the coupled systems.

  20. Design of launch systems using continuous improvement process

    Science.gov (United States)

    Brown, Richard W.

    1995-01-01

    The purpose of this paper is to identify a systematic process for improving ground operations for future launch systems. This approach is based on the Total Quality Management (TQM) continuous improvement process. While the continuous improvement process is normally identified with making incremental changes to an existing system, it can be used on new systems if they use past experience as a knowledge base. In the case of the Reusable Launch Vehicle (RLV), the Space Shuttle operations provide many lessons. The TQM methodology used for this paper will be borrowed from the United States Air Force 'Quality Air Force' Program. There is a general overview of the continuous improvement process, with concentration on the formulation phase. During this phase critical analyses are conducted to determine the strategy and goals for the remaining development process. These analyses include analyzing the mission from the customers point of view, developing an operations concept for the future, assessing current capabilities and determining the gap to be closed between current capabilities and future needs and requirements. A brief analyses of the RLV, relative to the Space Shuttle, will be used to illustrate the concept. Using the continuous improvement design concept has many advantages. These include a customer oriented process which will develop a more marketable product and a better integration of operations and systems during the design phase. But, the use of TQM techniques will require changes, including more discipline in the design process and more emphasis on data gathering for operational systems. The benefits will far outweigh the additional effort.

  1. Sistema de Informação em Saúde do Trabalhador: desafios e perspectivas para o SUS Occupational Health Information System: challenges and perspectives in the Brazilian Unified Health System (SUS

    Directory of Open Access Journals (Sweden)

    Luiz Augusto Facchini

    2005-12-01

    Full Text Available O presente artigo identifica e discute alguns desafios e perspectivas relativos à implantação de um Sistema de Informações em Saúde do Trabalhador (SIST no âmbito do Sistema Único de Saúde (SUS. Os desafios para a coleta, produção e a análise de dados e a disseminação continuada de informações sobre o estado de saúde dos trabalhadores e seus determinantes são revisados. Há destaque para a necessidade de investimentos em capacitação de recursos humanos, articulação e harmonização das bases de dados de interesse à saúde do trabalhador, implantação de infra-estrutura de informática nos níveis locais e da coleta das informações na rede de serviços do SUS, e integração e articulação interministerial. A realização da 3ª Conferência Nacional de Saúde do Trabalhador e a recém aprovada Política Nacional de Segurança e Saúde do Trabalhador representam reforços importantes para o debate sobre a implantação do SIST e sua prioridade na agenda do SUS. A relativa sintonia entre as agendas de técnicos, pesquisadores, trabalhadores e lideranças sindicais na defesa comum de um sistema de informações também é vista como um apoio à implantação do SIST e seu efetivo controle social.This paper presents a review of challenges and perspectives regarding the development of an occupational health information system in the Brazilian Unified Health System (SUS. It stress the need to set up a process of continuous data collection, processing, analyzing and communication of information on worker’s health and its determinants, emphasizing occupational risks. The paper also address the need to support the training of health workers. It is also recommended to take into consideration the feasibility of database standardization that allows linkage and, improvement in the information technologies utilized in health services, especially in community health centers, following a coordinated state action. Both, the 3rd

  2. Continuous-Time System Identification of a Smoking Cessation Intervention.

    Science.gov (United States)

    Timms, Kevin P; Rivera, Daniel E; Collins, Linda M; Piper, Megan E

    2014-01-01

    Cigarette smoking is a major global public health issue and the leading cause of preventable death in the United States. Toward a goal of designing better smoking cessation treatments, system identification techniques are applied to intervention data to describe smoking cessation as a process of behavior change. System identification problems that draw from two modeling paradigms in quantitative psychology (statistical mediation and self-regulation) are considered, consisting of a series of continuous-time estimation problems. A continuous-time dynamic modeling approach is employed to describe the response of craving and smoking rates during a quit attempt, as captured in data from a smoking cessation clinical trial. The use of continuous-time models provide benefits of parsimony, ease of interpretation, and the opportunity to work with uneven or missing data.

  3. Continuous-time system identification of a smoking cessation intervention

    Science.gov (United States)

    Timms, Kevin P.; Rivera, Daniel E.; Collins, Linda M.; Piper, Megan E.

    2014-07-01

    Cigarette smoking is a major global public health issue and the leading cause of preventable death in the United States. Toward a goal of designing better smoking cessation treatments, system identification techniques are applied to intervention data to describe smoking cessation as a process of behaviour change. System identification problems that draw from two modelling paradigms in quantitative psychology (statistical mediation and self-regulation) are considered, consisting of a series of continuous-time estimation problems. A continuous-time dynamic modelling approach is employed to describe the response of craving and smoking rates during a quit attempt, as captured in data from a smoking cessation clinical trial. The use of continuous-time models provide benefits of parsimony, ease of interpretation, and the opportunity to work with uneven or missing data.

  4. A model supporting Business Continuity auditing & planning in Information Systems

    NARCIS (Netherlands)

    Zambon, Emmanuele; Bolzoni, D.; Etalle, Sandro; Salvato, Marco

    2007-01-01

    One of the main tasks of IT business continuity planing (BCP) is guaranteeing that incidents affecting the IT infrastructure do not affect the availability of IT-dependent business processes beyond a given acceptable extent. Carrying out BCP of information systems is particularly challenging because

  5. A model supporting Business Continuity auditing & planning in Information Systems

    NARCIS (Netherlands)

    Zambon, Emmanuele; Bolzoni, D.; Etalle, Sandro; Salvato, Marco

    2007-01-01

    One of the main tasks of IT business continuity planning (BCP) is to guarantee that incidents affecting the IT infrastructure do not affect the availability of IT-dependent business processes beyond a given acceptable extent. Carrying out BCP of information systems is particularly challenging,

  6. A model supporting Business Continuity auditing & planning in Information Systems

    NARCIS (Netherlands)

    Zambon, Emmanuele; Bolzoni, Damiano; Etalle, Sandro; Salvato, Marco

    2007-01-01

    One of the main tasks of IT business continuity planning (BCP) is to guarantee that incidents affecting the IT infrastructure do not affect the availability of IT-dependent business processes beyond a given acceptable extent. Carrying out BCP of information systems is particularly challenging, becau

  7. A model supporting Business Continuity auditing & planning in Information Systems

    NARCIS (Netherlands)

    Zambon, Emmanuele; Bolzoni, Damiano; Etalle, Sandro; Salvato, Marco

    2007-01-01

    One of the main tasks of IT business continuity planing (BCP) is guaranteeing that incidents affecting the IT infrastructure do not affect the availability of IT-dependent business processes beyond a given acceptable extent. Carrying out BCP of information systems is particularly challenging because

  8. Quantification and scaling of multipartite entanglement in continuous variable systems

    CERN Document Server

    Adesso, G; Illuminati, F; Adesso, Gerardo; Serafini, Alessio; Illuminati, Fabrizio

    2004-01-01

    We present a theoretical method to determine the multipartite entanglement between different partitions of multimode, fully or partially symmetric Gaussian states of continuous variable systems. We demonstrate the scaling of the multipartite entanglement with the number of modes and the experimental implementation of the method in terms of measurements of the global and marginal purities.

  9. Continuous control systems for non-contact ECG

    Science.gov (United States)

    Kodkin, Vladimir L.; Yakovleva, Galina V.; Smirnov, Alexey S.

    2017-03-01

    South Ural State University is still conducting the research work dedicated to innovations in biomedicine. Development of system for continuous control and diagnosis of the functional state in large groups of people is based on studies of non-contact ECG recording reported by the authors at the SPIE conference in 2016. The next stage of studies has been performed this year.

  10. On Discrete Time Control of Continuous Time Systems

    DEFF Research Database (Denmark)

    Poulsen, Niels Kjølstad

    of Denmark. The focus in this paper is control of a continuous time system by means of a digital control. In this context the control signal can only change at sample instants and is constant between samples. The cost function do include the variations of output between samples....

  11. DYSIM - A Modular Simulation System for Continuous Dynamic Processes

    DEFF Research Database (Denmark)

    Christensen, P. la Cour; Kofoed, J. E.; Larsen, N.

    1986-01-01

    The report describes a revised version of a simulation system for continuous processes, DYSIM. In relation to the previous version, which was developed in 1981, the main changes are conversion to Fortran 77 and introduction of a modular structure. The latter feature gives the user a possibility...

  12. Multiple applications of the Boussignac continuous positive airway pressure system

    NARCIS (Netherlands)

    Dieperink, Willem

    2008-01-01

    Continuous positive airway pressure, (CPAP) is a form of treatment to support patients with dyspnea. For the application of CPAP a mechanical ventilator or complex CPAP apparatus is mostly used. The Boussignac CPAP (BCPAP) system developed by George Boussignac does not need such apparatus. The BCPAP

  13. Creating a paperless documentation system for nursing continuing education activities.

    Science.gov (United States)

    Garvey, Paula

    2010-02-01

    This article describes the process used to convert the required communication, documentation, and peer review process required by the Ohio State Board of Nursing, as well as program evaluation documents, to a completely online "live document" system. Creation of the documentation and review system was accomplished with custom Microsoft Word templates created with Visual Basic for Applications. All templates were created according to nursing continuing education specifications by a constituent member association-approved provider unit within the American Nurses Credentialing Center Accreditation system. Examples of the templates, program review process, and documentation system are included.

  14. Continuous operation of four-state continuous-variable quantum key distribution system

    Science.gov (United States)

    Matsubara, Takuto; Ono, Motoharu; Oguri, Yusuke; Ichikawa, Tsubasa; Hirano, Takuya; Kasai, Kenta; Matsumoto, Ryutaroh; Tsurumaru, Toyohiro

    2016-10-01

    We report on the development of continuous-variable quantum key distribution (CV-QKD) system that are based on discrete quadrature amplitude modulation (QAM) and homodyne detection of coherent states of light. We use a pulsed light source whose wavelength is 1550 nm and repetition rate is 10 MHz. The CV-QKD system can continuously generate secret key which is secure against entangling cloner attack. Key generation rate is 50 kbps when the quantum channel is a 10 km optical fiber. The CV-QKD system we have developed utilizes the four-state and post-selection protocol [T. Hirano, et al., Phys. Rev. A 68, 042331 (2003).]; Alice randomly sends one of four states {|+/-α⟩,|+/-𝑖α⟩}, and Bob randomly performs x- or p- measurement by homodyne detection. A commercially available balanced receiver is used to realize shot-noise-limited pulsed homodyne detection. GPU cards are used to accelerate the software-based post-processing. We use a non-binary LDPC code for error correction (reverse reconciliation) and the Toeplitz matrix multiplication for privacy amplification.

  15. Eurodish-Continuous Operation, System Improvement and Reference Units

    Energy Technology Data Exchange (ETDEWEB)

    Keck, T.; Schiel, W.; Heller, P.; Reinalter, W.; Gineste, J. M.; Ferriere, A.; Flamant, G.

    2006-07-01

    The 10 kWel Dish/Stirling system EuroDish was enhanced. Newly developed and improved components like the ceramic cavity insulation and the control system are described as well as a novel assembly method for the concentrator and a number of improvements and new features of the control software. Country Reference Units were built in Spain, France and Germany and are continuously operated. Operation experiences and performance data are presented. (Author)

  16. Varyasyong Leksikal sa mga Dayalektong Mandaya

    Directory of Open Access Journals (Sweden)

    Dr. Raymund M. Pasion

    2014-12-01

    Full Text Available Layuning panlahat sa pag-aaral na ito na tuklasin ang varyasyong leksikalsa Wikang Mandaya na matatagpuan sa Probinsyang Davao Oriental. Bilang lunsaran sa paglilikom ng mga datos, ginamit ang mga terminong kultural na pangkabuhayan tulad ng pagsasaka, pangangaso, pangingisda at paghahayupan nanababatay sa Indigenous Knowledge System and Practices (IKSP.Sinikap sagutin sa pagaaral ang suliraning ano-anong varyasyong liksikal ang makikita sa mga terminong kultural na pangkabuhayan ng Mandaya na makikita sa munisipalidad ng Caraga, Manay, Bagangaat Cateel? Disenyong kwalitatibo ginamit.Metodong indehinusat deskriptibo naman ang ginamit mula sa paglilikom hanggang sa pag-aanalisa ng mga datos. Samantalang, ang mga impormante ay pinilisa pamamagitan ng kombinasyong purposive at snow-ball sampling. Natuklasan, na ang wikang Mandaya ay nakitaan ng varyasyong lekisikal ayon sa magkakaiba ang anyo, may pagkakatulad ang anyo, at magkakatulad ang anyo subalit magkakaiba ang bigkas. Gayunpaman, pinaniniwalaang dahil sa paktor na heograpikal, sikolohikal at sosyolohikal na nagaganap sa kanilang kultura ay hindi rin maipagkailang nagyari ang varyasyong leksikal na aspekto nito.

  17. Educação permanente com agentes comunitários de saúde: uma proposta de cuidado com crianças asmáticas Continuing education with community health agents: a proposal for care of asthmatic children

    Directory of Open Access Journals (Sweden)

    Maria Wanderleya de Lavor Coriolano

    2012-06-01

    Full Text Available O uso de metodologias ativas nos processos de formação dos trabalhadores de saúde é uma diretriz recomendada na Política Nacional de Educação Permanente em Saúde (PNEPS para trabalhadores do Sistema Único de Saúde (SUS. Neste estudo, formulou-se uma intervenção educativa para agentes comunitários de saúde (ACS sobre cuidados dirigidos a crianças/famílias com asma. O objetivo é descrever uma ação educativa com agentes comunitários de saúde sobre conhecimentos relacionados à asma, adotando as diretrizes da PNEPS no contexto da atenção primária. Tratase de estudo 'quantiqualitativo', com avaliação préteste e pósteste autopreenchida pelos agentes comunitários de saúde, além de metodologias ativas em três grupos focais vivenciais, que tiveram sua trajetória gravada e transcrita para posterior análise de dados, com uso da técnica análise de conteúdo na modalidade temática proposta por Bardin. Os conhecimentos dos ACS sobre mitos relacionados à asma apontaram acréscimo após a ação educativa. Dos grupos focais emergiram as temáticas: Educação em saúde para prevenção das doenças respiratórias; Significado atribuído à asma; Bombinhas: desmistificando conceitos; Fatores desencadeantes para asma; Adaptando cuidados preventivos; Avaliando os conhecimentos construídos. A utilização de metodologias ativas favoreceu o desenvolvimento de competências por parte dos ACS, despertando motivação na abordagem educativa junto às crianças/famílias com asma.The use of active methods in the health worker training process is a guideline that is recommended under the National Continuing Education in Health Policy (PNEPS for National Health System (SUS employees. In this study, the authors created an educational intervention for community health agents (CHA regarding care aimed at children/families with asthma. The aim is to describe an educational action involving community health workers about asthmarelated

  18. System and method for continuous solids slurry depressurization

    Energy Technology Data Exchange (ETDEWEB)

    Leininger, Thomas Frederick; Steele, Raymond Douglas; Cordes, Stephen Michael

    2017-07-11

    A system includes a first pump having a first outlet and a first inlet, and a controller. The first pump is configured to continuously receive a flow of a slurry into the first outlet at a first pressure and to continuously discharge the flow of the slurry from the first inlet at a second pressure less than the first pressure. The controller is configured to control a first speed of the first pump against the flow of the slurry based at least in part on the first pressure, wherein the first speed of the first pump is configured to resist a backflow of the slurry from the first outlet to the first inlet.

  19. Continuous-flow free acid monitoring method and system

    Science.gov (United States)

    Strain, J.E.; Ross, H.H.

    1980-01-11

    A free acid monitoring method and apparatus is provided for continuously measuring the excess acid present in a process stream. The disclosed monitoring system and method is based on the relationship of the partial pressure ratio of water and acid in equilibrium with an acid solution at constant temperature. A portion of the process stream is pumped into and flows through the monitor under the influence of gravity and back to the process stream. A continuous flowing sample is vaporized at a constant temperature and the vapor is subsequently condensed. Conductivity measurements of the condensate produces a nonlinear response function from which the free acid molarity of the sample process stream is determined.

  20. Optical designs of reflection and refraction collection optics for a JT-60SA core Thomson scattering system

    Energy Technology Data Exchange (ETDEWEB)

    Tojo, H.; Hatae, T.; Hamano, T.; Sakuma, T.; Itami, K. [Japan Atomic Energy Agency, 801-1 Mukoyama, Naka 311-0193 (Japan)

    2013-09-15

    Collection optics for core measurements in a JT-60SA Thomson scattering system were designed. The collection optics will be installed in a limited space and have a wide field of view and wide wavelength range. Two types of the optics are therefore suggested: refraction and reflection types. The reflection system, with a large primary mirror, avoids large chromatic aberrations. Because the size limit of the primary mirror and vignetting due to the secondary mirror affect the total collection throughput, conditions that provide the high throughput are found through an optimization. A refraction system with four lenses forming an Ernostar system is also employed. The use of high-refractive-index glass materials enhances the freedom of the lens curvatures, resulting in suppression of the spherical and coma aberration. Moreover, sufficient throughput can be achieved, even with smaller lenses than that of a previous design given in [H. Tojo, T. Hatae, T. Sakuma, T. Hamano, K. Itami, Y. Aida, S. Suitoh, and D. Fujie, Rev. Sci. Instrum. 81, 10D539 (2010)]. The optical resolutions of the reflection and refraction systems are both sufficient for understanding the spatial structures in plasma. In particular, the spot sizes at the image of the optics are evaluated as ∼0.3 mm and ∼0.4 mm, respectively. The throughput for the two systems, including the pupil size and transmissivity, are also compared. The results show that good measurement accuracy (<10%) even at high electron temperatures (<30 keV) can be expected in the refraction system.

  1. Continuous Fraud Detection in Enterprise Systems through Audit Trail Analysis

    Directory of Open Access Journals (Sweden)

    Peter J. Best

    2009-03-01

    Full Text Available Enterprise systems, real time recording and real time reporting pose new and significant challenges to the accounting and auditing professions. This includes developing methods and tools for continuous assurance and fraud detection. In this paper we propose a methodology for continuous fraud detection that exploits security audit logs, changes in master records and accounting audit trails in enterprise systems. The steps in this process are: (1 threat monitoring-surveillance of security audit logs for ‘red flags’, (2 automated extraction and analysis of data from audit trails, and (3 using forensic investigation techniques to determine whether a fraud has actually occurred. We demonstrate how mySAP, an enterprise system, can be used for audit trail analysis in detecting financial frauds; afterwards we use a case study of a suspected fraud to illustrate how to implement the methodology.

  2. Design of VisSWIR continuous zoom optical system

    Science.gov (United States)

    Yang, Mingyang; Yang, Hongtao; Qu, Rui; Mei, Chao; Zhou, Zuofeng

    2017-02-01

    For 640 pixel×512 pixel cooled staring focal plane array detector, a VisSWIR wideband continuous zoom optical system with 7X zoom range is presented based on the pattern of the negative zoom group and compensating lens group. The zoom system provides continuous changed in the field of view from narrow to the wide. The zoom optical system works in the range of 0.4μm 1.7μm, F number is 4, the pixel of the detector is 15μm. It realizes 20mm 140mm continuous zoom with a smooth zoom path and provided high image quality with the whole zoom range, the zoom ratio is 7:1. The modulation transfer function(MTF) for the system is above 0.5 within the whole focal length range at spatial frequency of 34lp/mm and it almost approaches the diffraction limit. RMS value of spot diameter was investigation, the maximum distortion value is less than 5% and the surface type of all lens applied is spherical. Moreover, the cam curve after optimization is given by the optical design software Code V macro. The design results provide that the zoom system has the small size, high resolution, excellent image quality and the smooth cam curve etc.

  3. Asymptotic failure rate of a continuously monitored system

    Energy Technology Data Exchange (ETDEWEB)

    Grall, A. [Institut des Sciences et Technologies de l' Information de Troyes (CNRS-FRE 2732), Equipe de Modelisation et de Surete des Systemes, Universite de Technologie de Troyes, 12 rue Marie Curie, BP 2060, 10010 Troyes Cedex (France)]. E-mail: antoine.grall@utt.fr; Dieulle, L. [Institut des Sciences et Technologies de l' Information de Troyes (CNRS-FRE 2732), Equipe de Modelisation et de Surete des Systemes, Universite de Technologie de Troyes, 12 rue Marie Curie, BP 2060, 10010 Troyes Cedex (France)]. E-mail: laurence.dieulle@utt.fr; Berenguer, C. [Institut des Sciences et Technologies de l' Information de Troyes (CNRS-FRE 2732), Equipe de Modelisation et de Surete des Systemes, Universite de Technologie de Troyes, 12 rue Marie Curie, BP 2060, 10010 Troyes Cedex (France)]. E-mail: christophe.berenguer@utt.fr; Roussignol, M. [Laboratoire d' Analyse et de Mathematiques Appliquees, Universite de Marne la Vallee, 5 bd Descartes, Champs sur Marne, 77454 Marne la Vallee, Cedex 2 (France)]. E-mail: michel.roussignol@univ-mlv.fr

    2006-02-01

    This paper deals with a perfectly continuously monitored system which gradually and stochastically deteriorates. The system is renewed by a delayed maintenance operation, which is triggered when the measured deterioration level exceeds an alarm threshold. A mathematical model is developed to study the asymptotic behavior of the reliability function. A procedure is proposed which allows us to identify the asymptotic failure rate of the maintained system. Numerical experiments illustrate the efficiency of the proposed procedure and emphasize the relevance of the asymptotic failure rate as an interesting indicator for the evaluation of the control-limit preventive replacement policy.

  4. Patient Experienced Continuity of Care in the Psychiatric Healthcare System

    DEFF Research Database (Denmark)

    Jensen, Natasja Koitzsch; Johansen, Katrine Schepelern; Kastrup, Marianne

    2014-01-01

    are complex and diverse and the patient perspective of continuity of care provides important insight into the delivery of care. The study highlights the importance of person-centred care irrespective of migration background though it may be beneficial to have an awareness of areas that may be of more specific......Aim: The purpose of this study was to investigate continuity of care in the psychiatric healthcare system from the perspective of patients, including vulnerable groups such as immigrants and refugees. Method: The study is based on 19 narrative interviews conducted with 15 patients with diverse...... migration backgrounds (immigrants, descendents, refugees, and ethnic Danes). Patients were recruited from a community psychiatric centre situated in an area with a high proportion of immigrants and refugees. Data were analysed through the lens of a theoretical framework of continuity of care in psychiatry...

  5. High Resolution Continuous Flow Analysis System for Polar Ice Cores

    Science.gov (United States)

    Dallmayr, Remi; Azuma, Kumiko; Yamada, Hironobu; Kjær, Helle Astrid; Vallelonga, Paul; Azuma, Nobuhiko; Takata, Morimasa

    2014-05-01

    In the last decades, Continuous Flow Analysis (CFA) technology for ice core analyses has been developed to reconstruct the past changes of the climate system 1), 2). Compared with traditional analyses of discrete samples, a CFA system offers much faster and higher depth resolution analyses. It also generates a decontaminated sample stream without time-consuming sample processing procedure by using the inner area of an ice-core sample.. The CFA system that we have been developing is currently able to continuously measure stable water isotopes 3) and electrolytic conductivity, as well as to collect discrete samples for the both inner and outer areas with variable depth resolutions. Chemistry analyses4) and methane-gas analysis 5) are planned to be added using the continuous water stream system 5). In order to optimize the resolution of the current system with minimal sample volumes necessary for different analyses, our CFA system typically melts an ice core at 1.6 cm/min. Instead of using a wire position encoder with typical 1mm positioning resolution 6), we decided to use a high-accuracy CCD Laser displacement sensor (LKG-G505, Keyence). At the 1.6 cm/min melt rate, the positioning resolution was increased to 0.27mm. Also, the mixing volume that occurs in our open split debubbler is regulated using its weight. The overflow pumping rate is smoothly PID controlled to maintain the weight as low as possible, while keeping a safety buffer of water to avoid air bubbles downstream. To evaluate the system's depth-resolution, we will present the preliminary data of electrolytic conductivity obtained by melting 12 bags of the North Greenland Eemian Ice Drilling (NEEM) ice core. The samples correspond to different climate intervals (Greenland Stadial 21, 22, Greenland Stadial 5, Greenland Interstadial 5, Greenland Interstadial 7, Greenland Stadial 8). We will present results for the Greenland Stadial -8, whose depths and ages are between 1723.7 and 1724.8 meters, and 35.520 to

  6. Process Parameter Optimization of Extrusion-Based 3D Metal Printing Utilizing PW–LDPE–SA Binder System

    Directory of Open Access Journals (Sweden)

    Luquan Ren

    2017-03-01

    Full Text Available Recently, with a broadening range of available materials and alteration of feeding processes, several extrusion-based 3D printing processes for metal materials have been developed. An emerging process is applicable for the fabrication of metal parts into electronics and composites. In this paper, some critical parameters of extrusion-based 3D printing processes were optimized by a series of experiments with a melting extrusion printer. The raw materials were copper powder and a thermoplastic organic binder system and the system included paraffin wax, low density polyethylene, and stearic acid (PW–LDPE–SA. The homogeneity and rheological behaviour of the raw materials, the strength of the green samples, and the hardness of the sintered samples were investigated. Moreover, the printing and sintering parameters were optimized with an orthogonal design method. The influence factors in regard to the ultimate tensile strength of the green samples can be described as follows: infill degree > raster angle > layer thickness. As for the sintering process, the major factor on hardness is sintering temperature, followed by holding time and heating rate. The highest hardness of the sintered samples was very close to the average hardness of commercially pure copper material. Generally, the extrusion-based printing process for producing metal materials is a promising strategy because it has some advantages over traditional approaches for cost, efficiency, and simplicity.

  7. Methods for Automated and Continuous Commissioning of Building Systems

    Energy Technology Data Exchange (ETDEWEB)

    Larry Luskay; Michael Brambley; Srinivas Katipamula

    2003-04-30

    Avoidance of poorly installed HVAC systems is best accomplished at the close of construction by having a building and its systems put ''through their paces'' with a well conducted commissioning process. This research project focused on developing key components to enable the development of tools that will automatically detect and correct equipment operating problems, thus providing continuous and automatic commissioning of the HVAC systems throughout the life of a facility. A study of pervasive operating problems reveled the following would most benefit from an automated and continuous commissioning process: (1) faulty economizer operation; (2) malfunctioning sensors; (3) malfunctioning valves and dampers, and (4) access to project design data. Methodologies for detecting system operation faults in these areas were developed and validated in ''bare-bones'' forms within standard software such as spreadsheets, databases, statistical or mathematical packages. Demonstrations included flow diagrams and simplified mock-up applications. Techniques to manage data were demonstrated by illustrating how test forms could be populated with original design information and the recommended sequence of operation for equipment systems. Proposed tools would use measured data, design data, and equipment operating parameters to diagnosis system problems. Steps for future research are suggested to help more toward practical application of automated commissioning and its high potential to improve equipment availability, increase occupant comfort, and extend the life of system equipment.

  8. The perceptions of Unified Health System (Sistema Único de Saúde) users about including undergraduate students in Family Health Units (Unidades de Saúde da Família).

    Science.gov (United States)

    Driusso, Patricia; Sato, Tatiana O; Joaquim, Regina H V T; Moccellin, Ana S; Mascarenhas, Silvia H Z; Salvini, Tania F

    2013-01-01

    Curriculum guidelines for health professionals in training recommend including health students in different levels of service in the Unified Health System (Sistema Único de Saúde - SUS). Thus, there is a need to investigate the perceptions of SUS users with regard to the students' participation. To evaluate the perceptions of SUS users about the participation of health students in Family Health Units (Unidades de Saúde da Família - USF). A total of 518 people were interviewed in the waiting room of eight USFs in São Carlos/São Paulo. The interviews were conducted by students using a semi-structured questionnaire, and the data were analyzed descriptively. A total of 391 (75.5%) women and 127 (24.5%) men, with a mean age of 42.0±17.5 years, were interviewed. Among these users, 33.1% had encountered students in the USF, mainly while receiving clinical care (52.1%) or during home visits (20.1%); 55.3% considered the student's performance very good, and 0.6% considered it very bad. Most of the interviewees (58.2%) evaluated the activity performed by the student as effective, whereas 8.2% considered it ineffective. The students were included primarily in individual assistance activities, and the care provided by the students was well accepted. Both the users' satisfaction scores and their reported expectations were positive.

  9. Extremal entanglement and mixedness in continuous variable systems

    CERN Document Server

    Adesso, G; Illuminati, F

    2004-01-01

    We investigate extremal entanglement for Gaussian states of continuous variable systems. We introduce generalized entropies based on p-norms to quantify mixedness, and give their explicit expression in terms of symplectic spectra. We compare the hierarchies of mixedness provided by such measures with the one provided by the purity for n-mode states. We then review the argument proving the existence of both maximally and minimally entangled two--mode states at given global and marginal purities (with the entanglement quantified by the logarithmic negativity). Exploiting these results, we extend such an analysis to generalized entropies, fully characterizing maximally and minimally entangled states for given global and local generalized entropies. The privileged role of the purity in quantifying the mixedness of continuous variable systems is stressed and a proposal to estimate entanglement by purity measurements is finally reviewed.

  10. Verification of Continuous Dynamical Systems by Timed Automata

    DEFF Research Database (Denmark)

    Sloth, Christoffer; Wisniewski, Rafael

    2011-01-01

    This paper presents a method for abstracting continuous dynamical systems by timed automata. The abstraction is based on partitioning the state space of a dynamical system using positive invariant sets, which form cells that represent locations of a timed automaton. The abstraction is intended...... to enable formal verification of temporal properties of dynamical systems without simulating any system trajectory, which is currently not possible. Therefore, conditions for obtaining sound, complete, and refinable abstractions are set up. The novelty of the method is the partitioning of the state space...... of the verification process. The proposed abstraction is applied to two examples, which illustrate how sound and complete abstractions are generated and the type of specification we can check. Finally, an example shows how the compositionality of the abstraction can be used to analyze a high-dimensional system....

  11. Lean management systems: creating a culture of continuous quality improvement.

    Science.gov (United States)

    Clark, David M; Silvester, Kate; Knowles, Simon

    2013-08-01

    This is the first in a series of articles describing the application of Lean management systems to Laboratory Medicine. Lean is the term used to describe a principle-based continuous quality improvement (CQI) management system based on the Toyota production system (TPS) that has been evolving for over 70 years. Its origins go back much further and are heavily influenced by the work of W Edwards Deming and the scientific method that forms the basis of most quality management systems. Lean has two fundamental elements--a systematic approach to process improvement by removing waste in order to maximise value for the end-user of the service and a commitment to respect, challenge and develop the people who work within the service to create a culture of continuous improvement. Lean principles have been applied to a growing number of Healthcare systems throughout the world to improve the quality and cost-effectiveness of services for patients and a number of laboratories from all the pathology disciplines have used Lean to shorten turnaround times, improve quality (reduce errors) and improve productivity. Increasingly, models used to plan and implement large scale change in healthcare systems, including the National Health Service (NHS) change model, have evidence-based improvement methodologies (such as Lean CQI) as a core component. Consequently, a working knowledge of improvement methodology will be a core skill for Pathologists involved in leadership and management.

  12. Approach to Equilibrium for Quantum Systems with Continuous Spectrum

    Science.gov (United States)

    Laura, Roberto

    Considering quantum states as functionals acting on observables to give their mean values, it is possible to deal with quantum systems with continuous spectrum, generalizing the concept of trace. Generalized observables and states are defined for a quantum oscillator linearly coupled to a scalar field, and the analytic expression for time evolution is obtained. The "final" state (t → ∞) is presented as a weak limit. Finite and infinite number of exited modes of the field are considered.

  13. Quantification and scaling of multipartite entanglement in continuous variable systems.

    Science.gov (United States)

    Adesso, Gerardo; Serafini, Alessio; Illuminati, Fabrizio

    2004-11-26

    We present a theoretical method to determine the multipartite entanglement between different partitions of multimode, fully or partially symmetric Gaussian states of continuous variable systems. For such states, we determine the exact expression of the logarithmic negativity and show that it coincides with that of equivalent two-mode Gaussian states. Exploiting this reduction, we demonstrate the scaling of the multipartite entanglement with the number of modes and its reliable experimental estimate by direct measurements of the global and local purities.

  14. Multipartite Entanglement and its Polygamy in Continuous Variable Systems

    CERN Document Server

    Adesso, G; Adesso, Gerardo; Illuminati, Fabrizio

    2004-01-01

    We introduce an infinite-dimensional generalization of the tangle that quantifies the distributed entanglement of multimode Gaussian states. We show that the genuine $1 \\times 1 \\times ... \\times 1$ multiparty entanglement between an arbitrary number of modes exhibits a simple iterative structure in terms of bipartite $1 \\times N$ entanglements between different partitions of the modes. We demonstrate that the conjectured monogamy of entanglement fails in continuous variable systems, even in the simplest three-mode instance.

  15. Continuous variable tangle, monogamy inequality, and entanglement sharing in Gaussian states of continuous variable systems

    Energy Technology Data Exchange (ETDEWEB)

    Adesso, Gerardo; Illuminati, Fabrizio [Dipartimento di Fisica ' E R Caianiello' , Universita degli Studi di Salerno (Italy); CNISM and CNR-Coherentia, Gruppo di Salerno (Italy); and INFN Sezione di Napoli-Gruppo Collegato di Salerno (Italy); Via S Allende, 84081 Baronissi, SA (Italy)

    2006-01-15

    For continuous-variable (CV) systems, we introduce a measure of entanglement, the CV tangle (contangle), with the purpose of quantifying the distributed (shared) entanglement in multimode, multipartite Gaussian states. This is achieved by a proper convex-roof extension of the squared logarithmic negativity. We prove that the contangle satisfies the Coffman-Kundu-Wootters monogamy inequality in all three-mode Gaussian states, and in all fully symmetric N-mode Gaussian states, for arbitrary N. For three-mode pure states, we prove that the residual entanglement is a genuine tripartite entanglement monotone under Gaussian local operations and classical communication. We show that pure, symmetric three-mode Gaussian states allow a promiscuous entanglement sharing, having both maximum tripartite residual entanglement and maximum couplewise entanglement between any pair of modes. These states are thus simultaneous CV analogues of both the GHZ and the W states of three qubits: in CV systems monogamy does not prevent promiscuity, and the inequivalence between different classes of maximally entangled states, holding for systems of three or more qubits, is removed.

  16. On Chinese National Continuous Operating Reference Station System of GNSS

    Directory of Open Access Journals (Sweden)

    CHEN Junyong

    2007-11-01

    Full Text Available Objective: Global navigation satellite system (GNSS Continuous Operating Reference Station (CORS System can maintain a accurate, 3D, geocentric and dynamic reference coordinate frame in the corresponding area, can provide positioning and navigation service. It can also serve for the meteorology, geodynamics, earthquake monitoring and Location Based services (LBS etc in the same area. Until now, our country can’t provide a facing National CORS System serving for every profession and trade, and the national sharing platform of CORS System resources has not been established. So this paper discusses some valuable insight how to construct the National CORS System in China. Method: Constructing goal、Service object、CORS distribution、CORS geographic、geology and communication environment and other factors, are major considerations for the Constructing the National CORS System. Moreover, constructing GNSS CORS is more specific, mainly from four aspects, namely site-selection、civil construction、security measures and equipment-selection for consideration. Outcome: The project of the Constructing Global navigation satellite system (GNSS Continuous Operating Reference Station (CORS System in china is put forward, and is discussed from goal、principle、project and other for construction. Some meaning thought how to construct the National CORS System is submitted Conclusion: The Global navigation satellite system (GNSS Continuous Operating Reference Station (CORS System in china is the lack of a unified planning and design in the national level. So far, the national CORS system serving all walks of life has not been provided, and the national sharing platform of CORS System resources has not been established The primary mission of the Global navigation satellite system (GNSS Continuous Operating Reference Station (CORS System in china is as follows: using data set of GNSS and receiving, transport, process, integration, transmit information and

  17. PROCEDURE FOR INSTALLING A PHOTOVOLTAIC SYSTEM ON ROOFS IN CUBAN RON CORPORATION S.A

    Directory of Open Access Journals (Sweden)

    Mayra Guzmán Villavicencio

    2017-01-01

    Full Text Available In this work, a methodological procedure developed from experiences gained during the project "Photovoltaic installation on the roofs of the Central Rum Factory for operation in self consumption and public MT grid connection” is presented, which was held along with UGAO-AINAIR signature. It is developed taking into account the need to further consolidate the dominance of this alternative energy technology, which is the first experience in such facilities for both, the rum industry and process industries in Cuba. There are no technical rules that regulate requirements to be considered during the conceptual stage of projects for the introduction of photovoltaic systems connected to the grid. The methodological procedure presented provides guidance for its application in other entities, resulting necessary its elaboration to ensure technical stability and reliability of systems during its life.

  18. 3GPP SA2 architecture and functions for 5G mobile communication system

    OpenAIRE

    Junseok Kim; Dongmyoung Kim; Sunghyun Choi

    2017-01-01

    The on-going development of Fifth Generation (5G) mobile communication technology will be the cornerstone for applying Information and Communication Technology (ICT) to various fields, e.g., smart city, smart home, connected car, etc. The 3rd Generation Partnership Project (3GPP), which has developed the most successful standard technologies in the mobile communication market such as Universal Mobile Telecommunication System (UMTS) and Long Term Evolution (LTE), is currently carrying out the ...

  19. Persistence of Escherichia coli in batch and continuous vermicomposting systems.

    Science.gov (United States)

    Hénault-Ethier, Louise; Martin, Vincent J J; Gélinas, Yves

    2016-10-01

    Vermicomposting is a biooxidation process in which epigeicearthworms act in synergy with microbial populations to degrade organic matter. Vermicomposting does not go through a thermophilic stage as required by North American legislations for pathogen eradication. We examined the survival of a Green Fluorescent Protein (GFP) labeled Escherichia coli MG1655 as a model for the survival of pathogenic bacteria in both small-scale batch and medium-scale continuously-operated systems to discern the influence of the earthworm Eisenia fetida, nutrient content and the indigenous vermicompost microbial community on pathogen abundance. In batch systems, the microbial community had the greatest influence on the rapid decline of E. coli populations, and the effect of earthworms was only visible in microbially-impoverishedvermicomposts. No significant earthworm density-dependent relationship was observed on E. coli survival under continuous operation. E. coli numbers decreased below the US EPA compost sanitation guidelines of 10(3)Colony Forming Units (CFU)/g (dry weight) within 18-21days for both the small-scale batch and medium-scale continuous systems, but it took up to 51days without earthworms and with an impoverished microbial community to reach the legal limit. Nutrient replenishment (i.e. organic carbon) provided by continuous feed input did not appear to extend E. coli survival. In fact, longer survival of E. coli was noticed in treatments where less total and labile sugars were available, suggesting that sugars may support potentially antagonist bacteria in the vermicompost. Total N, pH and humidity did not appear to affect E. coli survival. Several opportunistic human pathogens may be found in vermicompost, and their populations are likely kept in check by antagonists.

  20. Continuous mine environmental monitoring system - a case study

    Energy Technology Data Exchange (ETDEWEB)

    Tripathy, D.P.; Sahu, H.B. [Regional Engineering College, Rourkela (India)

    2001-07-01

    The introduction of continuous remote environmental monitoring and control systems in modern coal mines is a great step forward in achieving increased mine safety, higher productivity and effective utilization of manpower. They provide alarms and displays of early warnings and impending dangerous conditions in the mine. They also provide facilities to monitor and control air quality, differential pressure, noise etc. Telemetry systems have distinct advantages over the old tube bundle techniques and are being increasingly used. This article discusses in detail the basic components and the functioning of telemonitoring systems in use with special reference to Colliery A, a degree-1 gassy coal mine worked by the bord and pillar method. The system monitors and processes data on temperature, methane and carbon monoxide. 1 figs., 3 tabs.

  1. Continuous Membrane-Based Screening System for Biocatalysis

    Directory of Open Access Journals (Sweden)

    Matthias Kraume

    2011-02-01

    Full Text Available The use of membrane reactors for enzymatic and co-factor regenerating reactions offers versatile advantages such as higher conversion rates and space-time-yields and is therefore often applied in industry. However, currently available screening and kinetics characterization systems are based on batch and fed-batch operated reactors and were developed for whole cell biotransformations rather than for enzymatic catalysis. Therefore, the data obtained from such systems has only limited transferability for continuous membrane reactors. The aim of this study is to evaluate and to improve a novel screening and characterization system based on the membrane reactor concept using the enzymatic hydrolysis of cellulose as a model reaction. Important aspects for the applicability of the developed system such as long-term stability and reproducibility of continuous experiments were very high. The concept used for flow control and fouling suppression allowed control of the residence time with a high degree of precision (±1% accuracy in a long-term study (>100 h.

  2. Continuity of the entropy of macroscopic quantum systems

    Science.gov (United States)

    Swendsen, Robert H.

    2015-11-01

    The proper definition of entropy is fundamental to the relationship between statistical mechanics and thermodynamics. It also plays a major role in the recent debate about the validity of the concept of negative temperature. In this paper, I analyze and calculate the thermodynamic entropy for large but finite quantum mechanical systems. A special feature of this analysis is that the thermodynamic energy of a quantum system is shown to be a continuous variable, rather than being associated with discrete energy eigenvalues. Calculations of the entropy as a function of energy can be carried out with a Legendre transform of thermodynamic potentials obtained from a canonical ensemble. The resultant expressions for the entropy are able to describe equilibrium between quantum systems having incommensurate energy-level spacings. This definition of entropy preserves all required thermodynamic properties, including satisfaction of all postulates and laws of thermodynamics. It demonstrates the consistency of the concept of negative temperature with the principles of thermodynamics.

  3. High-sensitivity, high-speed continuous imaging system

    Science.gov (United States)

    Watson, Scott A; Bender, III, Howard A

    2014-11-18

    A continuous imaging system for recording low levels of light typically extending over small distances with high-frame rates and with a large number of frames is described. Photodiode pixels disposed in an array having a chosen geometry, each pixel having a dedicated amplifier, analog-to-digital convertor, and memory, provide parallel operation of the system. When combined with a plurality of scintillators responsive to a selected source of radiation, in a scintillator array, the light from each scintillator being directed to a single corresponding photodiode in close proximity or lens-coupled thereto, embodiments of the present imaging system may provide images of x-ray, gamma ray, proton, and neutron sources with high efficiency.

  4. Immobilized yeast bioreactor systems for continuous beer fermentation

    Science.gov (United States)

    Tata; Bower; Bromberg; Duncombe; Fehring; Lau; Ryder; Stassi

    1999-01-01

    Two different types of immobilized yeast bioreactors were examined for continuous fermentation of high-gravity worts. One of these is a fluidized bed reactor (FBR) that employs porous glass beads for yeast immobilization. The second system is a loop reactor containing a porous silicon carbide cartridge (SCCR) for immobilizing the yeast cells. Although there was some residual fermentable sugar in the SCCR system product, nearly complete attenuation of the wort sugars was achieved in either of the systems when operated as a two-stage process. Fermentation could be completed in these systems in only half the time required for a conventional batch process. Both the systems showed similar kinetics of extract consumption, and therefore similar volumetric productivity. As compared to the batch fermentation, total fusel alcohols were lower; total esters, while variable, were generally higher. The yeast biomass production was similar to that in a conventional fermentation process. As would be expected in an accelerated fermentation system, the levels of vicinal diketones (VDKs) were higher. To remove the VDKs, the young beer was heat-treated to convert the VDK precursors and processed through a packed bed immobilized yeast bioreactor for VDK assimilation. The finished product from the FBR system was found to be quite acceptable from a flavor perspective, albeit different from the product from a conventional batch process. Significantly shortened fermentation times demonstrate the feasibility of this technology for beer production.

  5. Continuous-Flow System Produces Medical-Grade Water

    Science.gov (United States)

    Akse, James R.; Dahl, Roger W.; Wheeler, Richard R.

    2009-01-01

    A continuous-flow system utilizes microwave heating to sterilize water and to thermally inactivate endotoxins produced in the sterilization process. The system is designed for use in converting potable water to medical-grade water. Systems like this one could be used for efficient, small-scale production of medical- grade water in laboratories, clinics, and hospitals. This system could be adapted to use in selective sterilization of connections in ultra-pure-water-producing equipment and other equipment into which intrusion by microorganisms cannot be tolerated. Lightweight, port - able systems based on the design of this system could be rapidly deployed to remote locations (e.g., military field hospitals) or in response to emergencies in which the normal infrastructure for providing medical-grade water is disrupted. Larger systems based on the design of this system could be useful for industrial production of medical-grade water. The basic microwave-heating principle of this system is the same as that of a microwave oven: An item to be heated, made of a lossy dielectric material (in this case, flowing water) is irradiated with microwaves in a multimode microwave cavity. The heating is rapid and efficient because it results from absorption of microwave power throughout the volume of the lossy dielectric material. In this system, a copper tube having a length of 49.5 cm and a diameter of 2.25 cm serves as both the microwave cavity and the sterilization chamber. Microwave power is fed via a coaxial cable to an antenna mounted inside the tube at mid-length (see figure). Efficient power transfer occurs due to the shift in wavelength associated with the high permittivity of water combined with the strong coupling of 2.45-GHz microwaves with rotational-vibrational transitions of the dipolar water molecule.

  6. Methane metering devices and systems for continuous measurements

    Energy Technology Data Exchange (ETDEWEB)

    Gralewski, K.; Krupa, M.

    1982-01-01

    Brief characteristics are presented for the advantages and shortcomings of the existing methane devices and systems developed in the Polish People's Republic, FRG, Great Britain, United States, CSSR and USSR. Among the main requirements made for the modern methane metering devices designed for continuous measurements of methane concentration in the coal mines, requirements such as rapid reaction to the spasmodic change in methane concentration, resistance to contamination of the catalyst, low consumed power etc. are named. Trends are outlined for improvement in the coal industry of the Polish People's Republic.

  7. Simulation and optimization of continuous extractive fermentation with recycle system

    Science.gov (United States)

    Widjaja, Tri; Altway, Ali; Rofiqah, Umi; Airlangga, Bramantyo

    2017-05-01

    Extractive fermentation is continuous fermentation method which is believed to be able to substitute conventional fermentation method (batch). The recovery system and ethanol refinery will be easier. Continuous process of fermentation will make the productivity increase although the unconverted sugar in continuous fermentation is still in high concentration. In order to make this process more efficient, the recycle process was used. Increasing recycle flow will enhance the probability of sugar to be re-fermented. However, this will make ethanol enter fermentation column. As a result, the accumulated ethanol will inhibit the growth of microorganism. This research aims to find optimum conditions of solvent to broth ratio (S:B) and recycle flow to fresh feed ratio in order to produce the best yield and productivity. This study employed optimization by Hooke Jeeves method using Matlab 7.8 software. The result indicated that optimum condition occured in S: B=2.615 and R: F=1.495 with yield = 50.2439 %.

  8. Optimal periodic orbits of continuous time chaotic systems

    Science.gov (United States)

    Yang; Hunt; Ott

    2000-08-01

    In previous work [B. R. Hunt and E. Ott, Phys. Rev. Lett. 76, 2254 (1996); Phys. Rev. E 54, 328, (1996)], based on numerical experiments and analysis, it was conjectured that the optimal orbit selected from all possible orbits on a chaotic attractor is "typically" a periodic orbit of low period. By an optimal orbit we mean the orbit that yields the largest value of a time average of a given smooth "performance" function of the system state. Thus optimality is defined with respect to the given performance function. (The study of optimal orbits is of interest in at least three contexts: controlling chaos, embedding of low-dimensional attractors of high-dimensional dynamical systems in low-dimensional measurement spaces, and bubbling bifurcations of synchronized chaotic systems.) Here we extend this previous work. In particular, the previous work was for discrete time dynamical systems, and here we shall consider continuous time systems (flows). An essential difference for flows is that chaotic attractors can have embedded within them, not only unstable periodic orbits, but also unstable steady states, and we find that optimality can often occur on steady states. We also shed further light on the sense in which optimality is "typically" achieved at low period. In particular, we find that, as a system parameter is tuned to be closer to a crisis of the chaotic attractor, optimality may occur at higher period.

  9. Toroidal Continuously Variable Transmission Systems: Terminology and Present Studies

    Directory of Open Access Journals (Sweden)

    Ahmet YILDIZ

    2014-04-01

    Full Text Available The use of continuously variable transmission systems in many different areas such as aerospace, robotics, machinery and automotive industries as an alternative to conventional speed changers with constant ratio becomes widely.Especially in the automotive industry, these systems have been used increasingly, since they enable that internal combustion engines in vehicles run at optimal speeds, and consequently provide considerable fuel savings and therefore lower emission values and also they provide powerful acceleration and quiet working. CVT systems have several constructive variants such as belted, chained, balled, toroidal etc. In this paper, toroidal CVT systems based on elastohydrodynamic principles are concerned with, and fundamental works of last two decades in this field are reviewed. However, the relevant terminology and dynamics along with the control of these systems are briefly treated for better understanding of the literature mentioned. Attention is drawn to the lack of some significant issues in present research works, and potential future works are pointed out. This paper, to the authors’ knowledge, will be the first review on toroidal CVT systems in Turkish literature

  10. A Agência Nacional de Saúde e a política de saúde mental no contexto do sistema suplementar de assistência à saúde: avanços e desafios The Brazilian National Health Agency and the mental health policy in the context of the private health system: developments and challenges

    Directory of Open Access Journals (Sweden)

    Rachel Torres Salvatori

    2012-03-01

    Full Text Available O presente estudo trata das políticas de saúde mental conduzidas pela Agência Nacional de Saúde Suplementar - ANS, no cenário da assistência dispensada pelos planos privados de assistência à saúde. Dessa forma, analisa o modelo de regulação econômica e assistencial do setor suplementar, a forma de atuação da ANS como organismo regulador e o tratamento dispensado à assistência à saúde mental nos normativos emanados pela Agência. Concluiu-se que, apesar de avanços como a obrigatoriedade de cobertura para todas as doenças listadas na CID-10, a inclusão do tratamento das tentativas de suicídio e das lesões autoinfligidas, o atendimento por uma equipe multiprofissional, a ampliação do número de sessões com psicólogo, com terapeuta ocupacional e de psicoterapia, e a inclusão do hospital-dia na rede credenciada da operadora, a assistência à saúde mental ainda é pouco normatizada pelos regramentos vigentes no sistema de atenção à saúde suplementar, existindo muitas lacunas a serem preenchidas. A regulamentação dos mecanismos de coparticipação e franquia, a coparticipação crescente como limitador da internação psiquiátrica sem o repensar em uma rede substitutiva e a limitação do número de sessões de psicoterapia de crise são alguns dos desafios colocados para a ANS, no sentido de que esta cumpra realmente o seu papel institucional de promoção da defesa do interesse público na assistência suplementar à saúde.This work analyses the mental health policy-making activity of the Brazilian National Health Agency (ANS, responsible for controlling health insurance companies. Three points are discussed: a the framework of an economic and private health assistance regulatory activity, b the ANS and its regulation activity and c the rules produced by ANS in the mental health care field. It was concluded that, despite advances like the legal obligation to ensure medical treatment to all the diseases listed in

  11. A miniaturized transcutaneous system for continuous glucose monitoring.

    Science.gov (United States)

    Croce, Robert A; Vaddiraju, SanthiSagar; Kondo, Jun; Wang, Yan; Zuo, Liang; Zhu, Kai; Islam, Syed K; Burgess, Diane J; Papadimitrakopoulos, Fotios; Jain, Faquir C

    2013-02-01

    Implantable sensors for continuous glucose monitoring hold great potential for optimal diabetes management. This is often undermined by a variety of issues associated with: (1) negative tissue response; (2) poor sensor performance; and (3) lack of device miniaturization needed to reduce implantation trauma. Herein, we report our initial results towards constructing an implantable device that simultaneously address all three aforementioned issues. In terms of device miniaturization, a highly miniaturized CMOS (complementary metal-oxide-semiconductor) potentiostat and signal processing unit was employed (with a combined area of 0.665 mm(2)). The signal processing unit converts the current generated by a transcutaneous, Clark-type amperometric sensor to output frequency in a linear fashion. The Clark-type amperometric sensor employs stratification of five functional layers to attain a well-balanced mass transfer which in turn yields a linear sensor response from 0 to 25 mM of glucose concentration, well beyond the physiologically observed (2 to 22 mM) range. In addition, it is coated with a thick polyvinyl alcohol (PVA) hydrogel with embedded poly(lactic-co-glycolic acid) (PLGA) microspheres intended to provide continuous, localized delivery of dexamethasone to suppress inflammation and fibrosis. In vivo evaluation in rat model has shown that the transcutaneous sensor system reproducibly tracks repeated glycemic events. Clarke's error grid analysis on the as-obtained glycemic data has indicated that all of the measured glucose readings fell in the desired Zones A & B and none fell in the erroneous Zones C, D and E. Such reproducible operation of the transcutaneous sensor system, together with low power (140 μW) consumption and capability for current-to-frequency conversion renders this a versatile platform for continuous glucose monitoring and other biomedical sensing devices.

  12. Bohmian mechanics, open quantum systems and continuous measurements

    CERN Document Server

    Nassar, Antonio B

    2017-01-01

    This book shows how Bohmian mechanics overcomes the need for a measurement postulate involving wave function collapse. The measuring process plays a very important role in quantum mechanics. It has been widely analyzed within the Copenhagen approach through the Born and von Neumann postulates, with later extension due to Lüders. In contrast, much less effort has been invested in the measurement theory within the Bohmian mechanics framework. The continuous measurement (sharp and fuzzy, or strong and weak) problem is considered here in this framework. The authors begin by generalizing the so-called Mensky approach, which is based on restricted path integral through quantum corridors. The measuring system is then considered to be an open quantum system following a stochastic Schrödinger equation. Quantum stochastic trajectories (in the Bohmian sense) and their role in basic quantum processes are discussed in detail. The decoherence process is thereby described in terms of classical trajectories issuing from th...

  13. Spectral Gap and Logarithmic Sobolev Constant for Continuous Spin Systems

    Institute of Scientific and Technical Information of China (English)

    Mu Fa CHEN

    2008-01-01

    The aim of this paper is to study the spectral gap and the logarithmic Sobolev constant for continuous spin systems. A simple but general result for estimating the spectral gap of finite dimensional systems is given by Theorem 1.1, in terms of the spectral gap for one-dimensional marginals. The study of this topic provides us a chance, and it is indeed another aim of the paper, to justify the power of the results obtained previously. The exact order in dimension one (Proposition 1.4), and then the precise leading order and the explicit positive regions of the spectral gap and the logarithmic Sobolev constant for two typical infinite-dimensional models are presented (Theorems 6.2 and 6.3). Since we are interested in explicit estimates, the computations become quite involved. A long section (Section 4) is devoted to the study of the spectral gap in dimension one.

  14. Growth Model System for National Continuous Forest Inventory

    Institute of Scientific and Technical Information of China (English)

    Ge Hongli; Meng Xianyu; Tang Xiaoming

    2006-01-01

    A Growth Model System is developed for data updating and forecasting of the national continuous forest inventory.Its design is based on the inherent forest growth laws,and its parameters are estimated by modern regression methods.It is composed of an age-implicit tree model,a diameter-related survival rate model,a recruitment model based on age and number of plots,and an area model.It is suitable for forest resource information updating and forecasting for a large region,e.g.,a province.Data of remeasured plots and trees are needed for development of the system.A study case of Jiangxi Province with detailed error analyses is provided.

  15. Entanglement, Purity, and Information Entropies in Continuous Variable Systems

    CERN Document Server

    Adesso, G; Illuminati, F; Adesso, Gerardo; Serafini, Alessio; Illuminati, Fabrizio

    2005-01-01

    Quantum entanglement of pure states of a bipartite system is defined as the amount of local or marginal ({\\em i.e.}referring to the subsystems) entropy. For mixed states this identification vanishes, since the global loss of information about the state makes it impossible to distinguish between quantum and classical correlations. Here we show how the joint knowledge of the global and marginal degrees of information of a quantum state, quantified by the purities or in general by information entropies, provides an accurate characterization of its entanglement. In particular, for Gaussian states of continuous variable systems, we classify the entanglement of two--mode states according to their degree of total and partial mixedness, comparing the different roles played by the purity and the generalized $p-$entropies in quantifying the mixedness and bounding the entanglement. We prove the existence of strict upper and lower bounds on the entanglement and the existence of extremally (maximally and minimally) entang...

  16. Social-ecological system framework: initial changes and continuing challenges

    Directory of Open Access Journals (Sweden)

    Michael D. McGinnis

    2014-06-01

    Full Text Available The social-ecological system (SES framework investigated in this special issue enables researchers from diverse disciplinary backgrounds working on different resource sectors in disparate geographic areas, biophysical conditions, and temporal domains to share a common vocabulary for the construction and testing of alternative theories and models that determine which influences on processes and outcomes are especially critical in specific empirical settings. We summarize changes that have been made to this framework and discuss a few remaining ambiguities in its formulation. Specifically, we offer a tentative rearrangement of the list of relevant attributes of governance systems and discuss other ways to make this framework applicable to policy settings beyond natural resource settings. The SES framework will continue to change as more researchers apply it to additional contexts; the main purpose of this article is to delineate the version that served as the basis for the theoretical innovations and empirical analyses detailed in other contributions to this special issue.

  17. Novel System for Continuous Measurements of Dissolved Gases in Liquids

    Science.gov (United States)

    Baer, D. S.; Liem, J.; Owano, T. G.; Gupta, M.

    2014-12-01

    Measurements of dissolved gases in lakes, rivers and oceans may be used to quantify underwater greenhouse gas generation, air-surface exchange, and pollution migration. Studies involving quantification of dissolved gases typically require obtaining water samples (from streams, lakes, or ocean water) and transporting them to a laboratory, where they are degased. The gases obtained are then generally measured using gas chromatography and isotope ratio mass spectrometry for concentrations and isotope ratios, respectively. This conventional, off-line, discrete-sample methodology is time consuming and labor intensive, and thus severely inhibits detailed spatial and temporal mapping of dissolved gases. In this work, we describe the commercial development of a new portable membrane-based gas extraction system (18.75" x 18.88" x 10.69", 16 kg, 85 watts) that interfaces directly to our cavity enhanced laser absorption based (or Off-Axis ICOS) gas analyzers to continuously and quickly measure concentrations and isotope ratios of dissolved gases. By accurately controlling the water flow rate through the membrane contactor, gas pressure on the outside and water pressure on the inside of the membrane, the system can generate precise and highly reproducible results. Furthermore, the gas-phase mole fractions (parts per million, ppm) may be converted into dissolved gas concentrations (nM), by accurately measuring the gas flow rates in and out of the extraction system. We will present detailed laboratory test data that quantifies the performance (linearity, precision, and dynamic range) of the system for measurements of the concentrations and isotope ratios of dissolved greenhouse gases (methane, carbon dioxide, and nitrous oxide) continuously and in real time.

  18. 78 FR 63847 - Special Conditions: Embraer S.A., Model EMB-550 Airplanes; Airplane Electronic System Security...

    Science.gov (United States)

    2013-10-25

    ... architecture for the Embraer Model EMB-550 series of airplanes is composed of several connected networks. This... (aircraft control functions); 2. Airline business and administrative support (airline information services... Federal Aviation Administration 14 CFR Part 25 Special Conditions: Embraer S.A., Model EMB-550...

  19. Global Grazing Systems: Their Continuing Importance in Meeting Global Demand

    Science.gov (United States)

    Davis, K. F.; D'Odorico, P.

    2014-12-01

    Animal production exerts significant demand on land, water and food resources and is an extensive means by which humans modify natural systems. Demand for animal source foods has more than tripled over the past 50 years due to population growth and dietary change. To meet this demand, livestock intensification (e.g. concentrated animal feeding operations) has increased and with it the water, nitrogen and carbon footprints of animal production. However, grass-fed systems continue to contribute significantly to overall animal production. To date, little is known about the contributions of grass- and grain-fed systems to animal calorie production, how this has changed through time and to what extent these two systems are sensitive to climate. Using a calorie-based approach we hypothesize that grain-fed systems are increasing in importance (with serious implications for water and nutrient demand) and that rangeland productivity is correlated with rainfall. Our findings show that grass-fed systems made up the majority of animal calorie production since 1960 years but that the relative contribution of grain-fed system has increased (from 27% to 49%). This rapid transition towards grain-fed animal production is largely a result of changing diets demand, as we found the growth of grass-fed production only kept pace with population growth. On a regional scale, we find that Asia has been the major contributor to the increase in grass-fed animal calorie production and that Africa has undergone the most drastic transition from grass-fed to grain-fed dependence. Finally, as expected we see a positive relationship between rangeland productivity and precipitation and a shift from dairy- to meat-dominated production going from drier to wetter climates. This study represents a new means of analyzing the food security of animal products and an important step in understanding the historic trends of animal production, their relation to climate, their prospects for the future and their

  20. Sensor concentrator unit for the Continuous Automated Vault Inventory System

    Energy Technology Data Exchange (ETDEWEB)

    Nodine, R.N.; Lenarduzzi, R.

    1997-06-01

    The purpose of this document is to describe the use and operation of the sensor concentrator in the Continuous Automated Vault Inventory System (CAVIS). The CAVIS electronically verifies the presence of items of stored special nuclear material (SNM). US Department of Energy orders require that stored SNM be inventoried periodically to provide assurance that the material is secure. Currently this inventory is a highly manual activity, requiring personnel to enter the storage vaults. Using a CAVIS allows the frequency of physical inventories to be significantly reduced, resulting in substantial cost savings, increased security, and improved safety. The electronic inventory of stored SNM requires two different types of sensors for each item. The two sensors measure different parameters of the item, usually weight and gamma rays. A CAVIS is constructed using four basic system components: sensors, sensor concentrators, a data collection unit, and a database/user interface unit. One sensor concentrator supports the inventory of up to 20 items (40 sensors) and continuously takes readings from the item sensors. On request the sensor concentrator outputs the most recent sensor readings to the data collection unit. The information transfer takes place over a RS485 communications link. The data collection unit supports from 1 to 120 sensor concentrators (1 to 2,400 items) and is referred to as the Sensor Polling and Configuration System (SPCS). The SPCS is connected by a secure Transmission Control Protocol/Internet Protocol (TCP/IP) network to the database/user interface unit, which is referred to as the Graphical Facility Information Center (GraFIC). A CAVIS containing more than 2,400 items is supported by connecting additional SPCS units to the GraFIC.

  1. Sensor concentrator unit for the Continuous Automated Vault Inventory System

    Energy Technology Data Exchange (ETDEWEB)

    Nodine, R.N.; Lenarduzzi, R.

    1997-06-01

    The purpose of this document is to describe the use and operation of the sensor concentrator in the Continuous Automated Vault Inventory System (CAVIS). The CAVIS electronically verifies the presence of items of stored special nuclear material (SNM). US Department of Energy orders require that stored SNM be inventoried periodically to provide assurance that the material is secure. Currently this inventory is a highly manual activity, requiring personnel to enter the storage vaults. Using a CAVIS allows the frequency of physical inventories to be significantly reduced, resulting in substantial cost savings, increased security, and improved safety. The electronic inventory of stored SNM requires two different types of sensors for each item. The two sensors measure different parameters of the item, usually weight and gamma rays. A CAVIS is constructed using four basic system components: sensors, sensor concentrators, a data collection unit, and a database/user interface unit. One sensor concentrator supports the inventory of up to 20 items (40 sensors) and continuously takes readings from the item sensors. On request the sensor concentrator outputs the most recent sensor readings to the data collection unit. The information transfer takes place over a RS485 communications link. The data collection unit supports from 1 to 120 sensor concentrators (1 to 2,400 items) and is referred to as the Sensor Polling and Configuration System (SPCS). The SPCS is connected by a secure Transmission Control Protocol/Internet Protocol (TCP/IP) network to the database/user interface unit, which is referred to as the Graphical Facility Information Center (GraFIC). A CAVIS containing more than 2,400 items is supported by connecting additional SPCS units to the GraFIC.

  2. Financiamento do setor saúde: uma retrospectiva recente com uma abordagem para a odontologia Financing in Brazilian health care system: a recent retrospective and dentistry approach

    Directory of Open Access Journals (Sweden)

    Carolina Bezerra Cavalcanti Nóbrega

    2010-06-01

    Full Text Available As políticas orientadas para a mudança no sistema de saúde ocorreram em três fases: a implantação das Ações Integradas de Saúde (AIS em 1983; o Sistema Unificado e Descentralizado de Saúde (SUDS em 1987 e a promulgação da Constituição em 1988, surgindo assim o SUS (Sistema Único de Saúde, uma estrutura organizacional baseada em princípios de cidadania e justiça social. Com o surgimento do SUS, houve a necessidade de definir objetivos e diretrizes estratégicas para o processo de descentralização, tratando dos aspectos das responsabilidades, relações entre os gestores e critérios de transferência de recursos federais para estados e municípios. Desse modo, o objetivo desse trabalho foi realizar uma retrospectiva recente do plano orçamentário destinado à saúde após a reorganização do SUS, realizando também uma abordagem na área da odontologia. Trata-se de um estudo retrospectivo, no qual foram utilizados dados coletados do banco de dados em saúde do Ministério da Saúde do Brasil (DATASUS no período de 1998 a 2005. Observou-se que pelo menos no que diz respeito a valores de repasse anuais, a situação é positiva, esperando-se dessa forma que a tão sonhada reorganização e estruturação financeira do sistema de saúde brasileiro esteja começando a acontecer.The guided policies designed to modify the health care system occurred in three stages: the first occurred at the end of the military regimen with the implantation of the Integrated Actions of Health (AIS; the second came with the implantation of the Unified and Decentralized Health System (SUDS in 1987; and the third was the promulgation of the Constitution in 1988, when the Brazilian Unified Health System (SUS, an organizational structure based on principles of citizenship and social justice, was then created. With the creation of SUS, there was the need for defining objectives and strategic lines of direction for the decentralization process

  3. Development and Characterization of Lecithin-based Self-assembling Mixed Polymeric Micellar (saMPMs) Drug Delivery Systems for Curcumin

    Science.gov (United States)

    Chen, Ling-Chun; Chen, Yin-Chen; Su, Chia-Yu; Wong, Wan-Ping; Sheu, Ming-Thau; Ho, Hsiu-O.

    2016-11-01

    Self-assembling mixed polymeric micelles (saMPMs) were developed for overcoming major obstacles of poor bioavailability (BA) associated with curcumin delivery. Lecithin added was functioned to enlarge the hydrophobic core of MPMs providing greater solubilization capacity. Amphiphilic polymers (sodium deoxycholate [NaDOC], TPGS, CREMOPHOR, or a PLURONIC series) were examined for potentially self-assembling to form MPMs (saMPMs) with the addition of lecithin. Particle size, size distribution, encapsulation efficacy (E.E.), and drug loading (D.L.) of the mixed micelles were optimally studied for their influences on the physical stability and release of encapsulated drugs. Overall, curcumin:lecithin:NaDOC and curcumin:lecithin:PLURONIC P123 in ratios of 2:1:5 and 5:2:20, respectively, were optimally obtained with a particle size of 80%, and a D.L. of >10%. The formulated system efficiently stabilized curcumin in phosphate-buffered saline (PBS) at room temperature or 4 °C and in fetal bovine serum or PBS at 37 °C and delayed the in vitro curcumin release. In vivo results further demonstrated that the slow release of curcumin from micelles and prolonged duration increased the curcumin BA followed oral and intravenous administrations in rats. Thus, lecithin-based saMPMs represent an effective curcumin delivery system, and enhancing BA of curcumin can enable its wide applications for treating human disorders.

  4. Spatiotemporal System Identification With Continuous Spatial Maps and Sparse Estimation.

    Science.gov (United States)

    Aram, Parham; Kadirkamanathan, Visakan; Anderson, Sean R

    2015-11-01

    We present a framework for the identification of spatiotemporal linear dynamical systems. We use a state-space model representation that has the following attributes: 1) the number of spatial observation locations are decoupled from the model order; 2) the model allows for spatial heterogeneity; 3) the model representation is continuous over space; and 4) the model parameters can be identified in a simple and sparse estimation procedure. The model identification procedure we propose has four steps: 1) decomposition of the continuous spatial field using a finite set of basis functions where spatial frequency analysis is used to determine basis function width and spacing, such that the main spatial frequency contents of the underlying field can be captured; 2) initialization of states in closed form; 3) initialization of state-transition and input matrix model parameters using sparse regression-the least absolute shrinkage and selection operator method; and 4) joint state and parameter estimation using an iterative Kalman-filter/sparse-regression algorithm. To investigate the performance of the proposed algorithm we use data generated by the Kuramoto model of spatiotemporal cortical dynamics. The identification algorithm performs successfully, predicting the spatiotemporal field with high accuracy, whilst the sparse regression leads to a compact model.

  5. Performance of a newly designed continuous soot monitoring system (COSMOS).

    Science.gov (United States)

    Miyazaki, Yuzo; Kondo, Yutaka; Sahu, Lokesh K; Imaru, Junichi; Fukushima, Nobuhiko; Kano, Minoru

    2008-10-01

    We designed a continuous soot monitoring system (COSMOS) for fully automated, high-sensitivity, continuous measurement of light absorption by black carbon (BC) aerosols. The instrument monitors changes in transmittance across an automatically advancing quartz fiber filter tape using an LED at a 565 nm wavelength. To achieve measurements with high sensitivity and a lower detectable light absorption coefficient, COSMOS uses a double-convex lens and optical bundle pipes to maintain high light intensity and signal data are obtained at 1000 Hz. In addition, sampling flow rate and optical unit temperature are actively controlled. The inlet line for COSMOS is heated to 400 degrees C to effectively volatilize non-refractory aerosol components that are internally mixed with BC. In its current form, COSMOS provides BC light absorption measurements with a detection limit of 0.45 Mm(-1) (0.045 microg m(-3) for soot) for 10 min. The unit-to-unit variability is estimated to be within +/- 1%, demonstrating its high reproducibility. The absorption coefficients determined by COSMOS agreed with those by a particle soot absorption photometer (PSAP) to within 1% (r2 = 0.97). The precision (+/- 0.60 Mm(-1)) for 10 min integrated data was better than that of PSAP and an aethalometer under our operating conditions. These results showed that COSMOS achieved both an improved detection limit and higher precision for the filter-based light absorption measurements of BC compared to the existing methods.

  6. Solar powered wrist worn acquisition system for continuous photoplethysmogram monitoring.

    Science.gov (United States)

    Dieffenderfer, James P; Beppler, Eric; Novak, Tristan; Whitmire, Eric; Jayakumar, Rochana; Randall, Clive; Qu, Weiguo; Rajagopalan, Ramakrishnan; Bozkurt, Alper

    2014-01-01

    We present a solar-powered, wireless, wrist-worn platform for continuous monitoring of physiological and environmental parameters during the activities of daily life. In this study, we demonstrate the capability to produce photoplethysmogram (PPG) signals using this platform. To adhere to a low power budget for solar-powering, a 574 nm green light source is used where the PPG from the radial artery would be obtained with minimal signal conditioning. The system incorporates two monocrystalline solar cells to charge the onboard 20 mAh lithium polymer battery. Bluetooth Low Energy (BLE) is used to tether the device to a smartphone that makes the phone an access point to a dedicated server for long term continuous storage of data. Two power management schemes have been proposed depending on the availability of solar energy. In low light situations, if the battery is low, the device obtains a 5-second PPG waveform every minute to consume an average power of 0.57 mW. In scenarios where the battery is at a sustainable voltage, the device is set to enter its normal 30 Hz acquisition mode, consuming around 13.7 mW. We also present our efforts towards improving the charge storage capacity of our on-board super-capacitor.

  7. Continuous antigenic stimulation system (CASS) as a new immunization strategy.

    Science.gov (United States)

    Gomez-Vargas, Andrew; Rosenthal, Kenneth L; McDermott, Mark R; Hortelano, Gonzalo

    2004-09-28

    Protection against diseases is mediated by a sustained immune response. Here, we describe a new immunization strategy. Mice implanted with encapsulated C2C12 myoblasts secreting human factor IX (hFIX) elicited a strong humoral response against the transgene, as compared to mice immunized with complete Freund's adjuvant (FA). Mice also had increasing IgG2a antibody titer, indicating a switch to a Th1 profile immune response. Mice developed strong hFIX-specific cytotoxic T lymphocytes (CTL) that was detectable 213 days after implantation, demonstrating the sustained immunity elicited by encapsulated cells. Here, we propose continuous antigenic stimulation system (CASS) as a novel immunization strategy with potential application in the design of novel vaccines.

  8. Continuously acting fuel injection system. Kontinuierlich arbeitende Kraftstoffeinspritzanlage

    Energy Technology Data Exchange (ETDEWEB)

    Dorsch, H.; Hofbauer, A.; Steinbeck, H.

    1986-02-20

    A continuously acting fuel injection system with an air quantity meter in the suction pipe and a fuel distributor controlled by it is provided with an additional device for use in a multi-cylinder aircraft engine, which is used to give the best possible performance, fuel saving and safety. An altitude control pressure controller is connected in parallel with a warming up controller to the control pressure pipe going to the fuel distributor, which measures the control pressure and therefore the fuel dosing according to the air density varying with the temperature and pressure. By fitting a fixed throttle between the control pressure pipe and the fuel return pipe to the fuel tank, emergency running of the engine is ensured on failure of both controllers. (orig./BWI).

  9. Optimized tomography of continuous variable systems using excitation counting

    Science.gov (United States)

    Shen, Chao; Heeres, Reinier W.; Reinhold, Philip; Jiang, Luyao; Liu, Yi-Kai; Schoelkopf, Robert J.; Jiang, Liang

    2016-11-01

    We propose a systematic procedure to optimize quantum state tomography protocols for continuous variable systems based on excitation counting preceded by a displacement operation. Compared with conventional tomography based on Husimi or Wigner function measurement, the excitation counting approach can significantly reduce the number of measurement settings. We investigate both informational completeness and robustness, and provide a bound of reconstruction error involving the condition number of the sensing map. We also identify the measurement settings that optimize this error bound, and demonstrate that the improved reconstruction robustness can lead to an order-of-magnitude reduction of estimation error with given resources. This optimization procedure is general and can incorporate prior information of the unknown state to further simplify the protocol.

  10. Entanglement in continuous variable systems: Recent advances and current perspectives

    CERN Document Server

    Adesso, G; Adesso, Gerardo; Illuminati, Fabrizio

    2007-01-01

    We review the theory of continuous-variable entanglement with special emphasis on foundational aspects, conceptual structures, and mathematical methods. Much attention is devoted to the discussion of separability criteria and entanglement properties of Gaussian states, for their great practical relevance in applications to quantum optics and quantum information, as well as for the very clean framework that they allow for the study of the structure of nonlocal correlations. We give a self-contained introduction to phase-space and symplectic methods in the study of Gaussian states of infinite-dimensional bosonic systems. We review the most important results on the separability and distillability of Gaussian states and discuss the main properties of bipartite entanglement. These include the extremal entanglement, minimal and maximal, of two-mode mixed Gaussian states, the ordering of two-mode Gaussian states according to different measures of entanglement, the unitary (reversible) localization, and the scaling o...

  11. Development of the Continued Improvement System for Nuclear Safety Culture

    Energy Technology Data Exchange (ETDEWEB)

    Park, H. C.; Park, H. G.; Park, Y. W.; Park, J. Y. [KAIST, Daejeon (Korea, Republic of)

    2016-05-15

    It has been found that almost 80 % of the incidents and accidents occurred recently, such as the Fukushima Daiichi disaster and Domestic SBO accident etc. were analyzed to be caused from human errors. (IAEA NES NG-G-2.1) Which strongly claims the importance of the safety culture system. Accordingly, it should be away from a cursory approach like one-off field survey or Snap shop which were being conducted at present for the continued improvement of safety culture. This study introduces an analytical methodology which approaches the generic form of the safety both consciously and unconsciously expressed with behavior, thoughts, and attitude etc. This study was implemented only for open materials such as Inspection report, incidents and accidents reports, QA documents because of the limitation in accessibility to data. More effective use with securing operational data will be possible in future.

  12. Continuous growth of the motor system in the axolotl

    Energy Technology Data Exchange (ETDEWEB)

    Holder, N.; Clarke, J.D.; Stephens, N.; Wilson, S.W.; Orsi, C.; Bloomer, T.; Tonge, D.A. (King' s College, London (England))

    1991-01-22

    During growth of the axolotl, motor neurons, and muscle fibres are added to the motor system. By double labelling neurons with tritiated thymidine and retrogradely transported HRP, we show that some motor neurons are born at postembryonic stages. Further analysis of motor neurons with the aid of HRP reveals this population of newly born cells relatively frequently in small (5-7 cm long) axolotls, but only rarely in large (7-13 cm long) axolotls. Evidence is presented that suggests that these immature cells are in the process of migrating from close to the ependyma out to the ventral horn. HRP transport also reveals growth cones of advancing axons within spinal nerves in animals up to 6 cm in length. Cell counts by light and electron microscopic methods show that muscle fibres are generated throughout larval life in the iliotibialis, a typical limb muscle. This analysis provides data consistent with the notion that new muscle fibres are added from a localised growth zone situated at the superficial edge of the muscle. These results are discussed in terms of the correlation between continuous growth of the motor system and the ability of the axolotl to functionally repair lesions to the peripheral nervous system.

  13. Avaliação econômica em Saúde na esfera de atenção local à saúde Health economic evaluation in a local level government health care system

    Directory of Open Access Journals (Sweden)

    Leyla Gomes Sancho

    2009-10-01

    Full Text Available O estudo tem por finalidade contribuir com a reflexão sobre a possibilidade de se operacionalizar avaliações econômicas em saúde nas esferas de atenção local à saúde e a consequente apreensão dos resultados de estudos para efeito de decisão pelos gestores. Para subsidiar essa reflexão, se utilizou como objeto de análise a avaliação realizada sobre o custo do Programa SAMU/192 no município de Belo Horizonte (MG, dados relativos à efetividade do programa e uma revisão nas bases eletrônicas de dados (SciELO e Medline sobre o uso de estudos para efeito de decisão. A análise apontou que, mesmo para uma simples avaliação de gastos, ainda existem problemas relativos à disponibilidade de dados, como também no que concerne aos dados para subsidiar a avaliação sobre sua efetividade, e em relação à definição de sistemas e o relacionamento entre sistemas de informação. Assim como mostrou que os estudos são pouco utilizados pelos gestores, levando à conclusão de que a condução e a utilização, para efeito de gestão, de estudos deste porte ainda são pouco factíveis nesta esfera de governo.This work aims to contribute to the discussion about the possibility of applying health economic evaluations at local level government healthcare system, and consequently use the results of this study into decision making. In order to subside this reflexion, it was analyzed the SAMU/192 Program costs evaluation in the city of Belo Horizonte, as well as data concerning effectiveness of the program and a review on electronic databases (SciELO and Medline about the application of studies in decision making. The analysis showed that even for a simple evaluation on expenditure, there are still unsolved problems of data availability as well as of data effectiveness on information systems definition and association. It showed that decision makers do not use the result of studies for decision making either. So, we conclude that there is no

  14. A utilização de serviços de saúde por sistema de financiamento An analysis of health services utilisation, by financing system

    Directory of Open Access Journals (Sweden)

    Silvia Marta Porto

    2006-12-01

    Full Text Available Este artigo analisa, a partir de microdados de 1998 e 2003 da PNAD/IBGE, a utilização de serviços de saúde sob a perspectiva de seu financiamento ou, em outras palavras, sob o prisma do sistema de proteção à saúde pelo qual o serviço foi utilizado: se pelo Sistema Único de Saúde (SUS, ou seja, pelo sistema público financiado por meio de tributos; se por planos e seguros de saúde privados e financiados por prêmios pagos por beneficiários e/ou seus empregadores; ou, finalmente, se mediante a compra direta de serviços (pagamento direto no ato da utilização de serviços. Entre os principais resultados da análise, destacam-se os seguintes: 1 o SUS financia a maioria dos atendimentos e das internações realizados no País, participação que aumentou significativamente entre 1998 e 2003; 2 embora o número absoluto de atendimentos realizados pelos três sistemas de financiamento tenha aumentado, a expansão do SUS foi muito mais significativa e a ela correspondeu uma desaceleração do crescimento do gasto privado direto; 3 o SUS é o principal financiador dos dois níveis extremos de complexidade da atenção à saúde: o de atenção básica e o da alta complexidade.This article analyses, from micro-data of the National Sample Household Survey (PNAD/IBGE from 1998 and 2003, the utilisation of health services according to different financing systems. In other words, it analyses if this utilisation has been done through the National Health System SUS (public and universal health insurance, financed by taxes, through private health insurance (premiums paid by the insured population and/or their employers or through out-of-pocket payments. The main results are: 1 SUS finances most of inpatient and outpatient utilisation and its participation has strongly increased from 1998 to 2003; 2 although the absolute number of outpatient utilisation made through the three systems has increased, SUS expansion has been much stronger (it increased

  15. Framework for continuous performance improvement in small drinking water systems.

    Science.gov (United States)

    Bereskie, Ty; Haider, Husnain; Rodriguez, Manuel J; Sadiq, Rehan

    2017-01-01

    Continuous performance improvement (CPI) can be a useful approach to overcome water quality problems impacting small communities. Small drinking water systems (SDWSs) struggle to meet regulatory requirements and often lack the economic and human resource flexibility for immediate improvement. A CPI framework is developed to provide SDWS managers and operators an approach to gauge their current performance against similar systems and to track performance improvement from the implementation of the new technologies or innovations into the future. The proposed CPI framework incorporates the use of a water quality index (WQI) and functional performance benchmarking to evaluate and compare drinking water quality performance of an individual water utility against that of a representative benchmark. The results are then used to identify and prioritize the most vulnerable water quality indicators and subsequently identify and prioritize performance improvement strategies. The proposed CPI framework has been demonstrated using data collected from SDWSs in the province of Newfoundland and Labrador (NL), Canada and using the Canadian Council of Ministers of the Environment (CCME) WQI.

  16. Partial splenic embolization to permit continuation of systemic chemotherapy.

    Science.gov (United States)

    Luz, Jose Hugo M; Luz, Paula M; Marchiori, Edson; Rodrigues, Leonardo A; Gouveia, Hugo R; Martin, Henrique S; Faria, Igor M; Souza, Roberto R; Gil, Roberto de Almeida; Palladino, Alexandre de M; Pimenta, Karina B; de Souza, Henrique S

    2016-10-01

    Systemic chemotherapy treatments, commonly those that comprise oxaliplatin, have been linked to the appearance of distinctive liver lesions that evolves to portal hypertension, spleen enlargement, platelets sequestration, and thrombocytopenia. This outcome can interrupt treatment or force dosage reduction, decreasing efficiency of cancer therapy. We conducted a prospective phase II study for the evaluation of partial splenic embolization in patients with thrombocytopenia that impeded systemic chemotherapy continuation. From August 2014 through July 2015, 33 patients underwent partial splenic embolization to increase platelets count and allow their return to treatment. Primary endpoint was the accomplishment of a thrombocyte level superior to 130 × 10(9) /L and the secondary endpoints were the return to chemotherapy and toxicity. Partial splenic embolization was done 36 times in 33 patients. All patients presented gastrointestinal cancer and colorectal malignancy was the commonest primary site. An average of 6.4 cycles of chemotherapy was done before splenic embolization and the most common regimen was Folfox. Mean platelet count prior to embolization was 69 × 10(9) /L. A total of 94% of patients achieved primary endpoint. All patients in need reinitiated treatment and median time to chemotherapy return was 14 days. No grade 3 or above adverse events were identified. Aiming for a 50% to 70% infarction area may be sufficient to achieve success without the complications associated with more extensive infarction. Combined with the better safety profile, partial splenic embolization is an excellent option in the management of thrombocytopenia, enabling the resumption of systemic chemotherapy with minimal procedure-related morbidity.

  17. Research on an active and continuous monitoring system for human respiratory system

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    Continuous and dynamic measurements of human respiratory parameters are very important for vital diseases of respiratory system during mechanical ventilation. This paper analyzed the structure and mechanical properties of the human respiratory system, and designed an active intervening monitoring micro system for it. The mobile mechanism of the micro system is soft and earthworm-like movement actuated by pneumatic rubber actuator, the measurement and therapy unit of the system is an extensible mechanism with sensors in the front. The micro monitoring system can move in respiratory tract and measure the respiratory parameters in bronchium continuously. Experiments had been done in swine's respiratory tract,the results proved that the micro robot system could measure the respiratory parameters in real-time successfully and its movement was smooth in swine's respiratory tract.

  18. Análise da continuidade da assistência à saúde de adolescentes portadores de diabetes Analysis of the continuity of health care provided to diabetic adolescents

    Directory of Open Access Journals (Sweden)

    Ederline Suelly Vanini de Brito

    2012-12-01

    Full Text Available OBJETIVOS: analisar a continuidade assistencial de adolescentes diabéticos nos serviços de saúde em Recife, na perspectiva de pacientes e profissionais envolvidos no cuidado. MÉTODOS: estudo qualitativo-descritivo. Realizaram-se 27 entrevistas entre mães de adolescentes e profissionais de saúde dos diferentes níveis de complexidade. Os dados foram analisados através da técnica de análise narrativa de conteúdo. RESULTADOS: na continuidade da gestão, os informantes consideram coerentes os objetivos e o tratamento realizado entre profissionais dos serviços especializados, embora não mencionassem a utilização de planos de cuidados ou protocolos. Na continuidade da informação, alguns entrevistados referiram haver comunicação entre profissionais especialistas, porém, inexiste comunicação entre profissionais da atenção básica. Como principais barreiras para a transfe-rência de informações estão a grande demanda dos serviços e a demora na entrega dos resultados. Finalmente, na continuidade da relação, todas as mães mencionaram a importância e a existência do vínculo e da confiança entre os profissionais e usuários, identificando como responsáveis pela assistência ao adolescente os profissionais especia-listas. CONCLUSÕES: a continuidade assistencial é mais percebida nos serviços de média e alta complexidade. Esses achados podem estar relacionados à qualificação dos profissionais e melhor infra-estrutura dos serviços especializados, indicando a necessidade de ampliar os investimentos na atenção básica como coordenadora da assistência.OBJECTIVES: to analyze the continuity of care for diabetic adolescents in health services in Recife, from the perspective of patients and professionals involved with the care. METHODS: a descriptive qualitative study. 27 interviews were conducted with the mothers of adolescents and a variety of health professionals responsible for different levels of care. The data was

  19. O papel do cirurgião-dentista no Sistema Único de Saúde The role of dentists in the Unified Health System (SUS

    Directory of Open Access Journals (Sweden)

    Denise Aerts

    2004-01-01

    Full Text Available O Sistema Único de Saúde é um processo social em construção permanente, sendo fundamental a contínua discussão sobre seu modelo de atenção, os paradigmas explicativos do processo saúde-doença que o embasam e o papel de diferentes profissionais que nele atuam. Esse trabalho objetiva a discussão sobre a atuação do cirurgião-dentista no SUS. Uma forma de sistematizar suas possibilidades de atuação é a sua inserção no sistema. Em nível central ou distrital, deve atuar em equipes interdisciplinares no planejamento de políticas públicas saudáveis e no desenvolvimento de ações de vigilância da saúde da coletividade. Considerando os campos de ação propostos pela Carta de Otawa, as atribuições do cirurgião-dentista, em nível local, podem ser direcionadas para o fortalecimento de ações comunitárias, o desenvolvimento de habilidades pessoais e a reorientação dos serviços de saúde. É necessária a readequação dos cursos de odontologia para formar profissionais capacitados a exercerem uma prática que atenda ao SUS e a contínua capacitação dos profissionais já graduados atuando no sistema.The Brazilian Health System might be considered as a social process. It is of fundamental importance an ongoing discussion about its health care model, the theories explaining health and disease which give it theoretical support and the role of the different health professionals working in it. The purpose of this study is to deepen the discussion about the role of dentists in the Unified Health System (SUS. The role of this professional might be considered in terms of central and local level. At central or districtal level dentists might work with interdisciplinary teams, planning healthy public policies and developing public health surveillance actions. Based on the proposals of the Otawa Charter, dentists at a local level may work to strengthing community action, to develop personal abilities and to reorientate health

  20. Educação permanente com os auxiliares de enfermagem da Estratégia Saúde da Família em Sobral, Ceará Continuing education with nursing assistants from the Family Health Strategy in Sobral, Ceará

    Directory of Open Access Journals (Sweden)

    Aldiania Carlos Balbino

    2010-10-01

    Full Text Available A proposta da Política Nacional de Educação Permanente em Saúde (PNEPS é a formação e o desenvolvimento dos trabalhadores para o Sistema Único de Saúde (SUS. A partir desse pressuposto, o objetivo deste estudo foi analisar a percepção dos auxiliares de enfermagem sobre o processo de Educação Permanente (EP que vem sendo realizado pela Escola de Formação em Saúde da Família Visconde de Sabóia (EFSFVS em Sobral, Ceará, Brasil. Desenvolveu-se um estudo exploratório-descritivo de natureza qualitativa com dez auxiliares de enfermagem que participaram pelo menos uma vez das atividades de EP desenvolvidas pela Coordenação de EP de Sobral. Os dados foram coletados por meio da técnica de grupo focal, e os resultados, analisados a partir do discurso do sujeito coletivo. Os resultados evidenciaram que houve mudanças na prática dos auxiliares de enfermagem após a inserção destes nas atividades de EP através do apoderamento e aperfeiçoamento de competências (habilidades, atitudes e conhecimentos. Destarte, faz-se necessária a permanência desses trabalhadores no processo de EP, assim como de avaliação sistemática nesse processo, para que se alcance uma prática profissional eficiente e transformadora, pelo aprender constante, qualificando a atenção à saúde.The proposal set forth by the National Policy on Continuing Education in Health (PNEPS is to train and develop workers for the Unified Health System (SUS. Based on this assumption, the purpose of this study was to analyze the perceptions nursing assistants have about the Continuing Education (CE process being carried out by the Visconde de Sabóia School for Education in Family Health (EFSFVS, in Sobral, state of Ceará, Brazil. A qualitative descriptive-exploratory study was undertaken involving ten nursing assistants who participated at least once in the CE activities undertaken by the Sobral CE Coordination. Data were collected through focus group techniques, and

  1. Bacillus cereus AR156 activates PAMP-triggered immunity and induces a systemic acquired resistance through a NPR1-and SA-dependent signaling pathway.

    Science.gov (United States)

    Niu, Dongdong; Wang, Xiujuan; Wang, Yanru; Song, Xiaoou; Wang, Jiansheng; Guo, Jianhua; Zhao, Hongwei

    2016-01-01

    Induced resistance responses play a potent role in plant defense system against pathogen attack. Bacillus cereus AR156 is a plant growth promoting rhizobacterium (PGPR) that installs induced systemic resistance (ISR) to Pseudomonas syringae pv. tomato (Pst) in Arabidopsis. Here, we show that AR156 leaf infiltration enhances disease resistance in Arabidopsis through the activation of a systemic acquired resistance (SAR). PR1 protein expression and reactive oxygen species (ROS) burst are strongly induced in plants treated with AR156 and inoculated with Pst than that in plants inoculated with Pst only. Moreover, AR156 can trigger SAR in jar1 or ein2 mutants, but not in the NahG transgenic and NPR1 mutant plants. Our results indicate that AR156-induced SAR depends on SA-signaling pathway and NPR1, but not JA and ET. Also, AR156-treated plants are able to rapidly activate MAPK signaling and FRK1 gene expression, which are involved in pathogen associated molecular pattern (PAMP)-triggered immunity (PTI). Altogether, our results indicate that AR156 can induce SAR by the SA-signaling pathways in an NPR1-dependent manner and involves multiple PTI components.

  2. Multivariable identification of continuous-time fractional system

    OpenAIRE

    2009-01-01

    International audience; This paper presents two subspace-based methods, from the MOESP (MIMO output-error state space) family, for state-space identification of continuous-time fractional commensurate models from sampled input-output data. The methodology used in this paper involves a continuous-time fractional operator allowing to reformulate the problem so that the state-space matrices can be estimated with conventional discrete-time subspace techniques based on QR and singular value decomp...

  3. 40 CFR Table 3 of Subpart Aaaa to... - Requirements for Validating Continuous Emission Monitoring Systems (CEMS)

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 6 2010-07-01 2010-07-01 false Requirements for Validating Continuous Emission Monitoring Systems (CEMS) 3 Table 3 of Subpart AAAA to Part 60 Protection of Environment... Continuous Emission Monitoring Systems (CEMS) For the following continuous emission monitoring systems...

  4. Implementing business continuity management systems and sharing best practices at a European bank.

    Science.gov (United States)

    Aronis, Stelios; Stratopoulos, Georgios

    2016-01-01

    This paper provides an overview of the methodology applied by the Alpha Bank Group in order to implement a business continuity management (BCM) programme to its parent company (Alpha Bank SA), as well as to its subsidiaries in Albania, Bulgaria, Cyprus, Former Yugoslav Republic of Macedonia, Greece, Romania, Serbia, UK and Ukraine. It also reviews the problems faced, how they were overcome and the lessons learned. When implementing a BCM programme in a large organisation, it is very important to follow the methodology described by BCM standard ISO 22301, otherwise the business continuity plan is unlikely to work efficiently or comply with the business recovery requirements, as well as with the requirements of other interested parties, such as customers, regulatory authorities, vendors, service providers, critical associates, etc.

  5. Integration of Design Patterns and Mobile Applications in a Management System for Monitoring Maintenance Cathode Plates of Mining Company Quebrada Blanca SA

    CERN Document Server

    Carlos, Oscar Sandoval

    2010-01-01

    This document presents the integration of design patterns and mobile applications, in the development of software management of plates (SIGEP) that allows to support in the solutions to problematics that they appear in the process of maintaining of plates copper cathodes of a Mining Company, in our case for Quebrada Blanca S.A. (CMQB S.A.). These problematics mainly are related to the little control over the tasks carried out in the maintaining to the cathodic plates, and the lack of information that leads to this practice, originates a deficient management and it does not allow to make opportune decisions referring to these elements, and therefore it does to project and to administer the life utility of the plates of cathodes, generating lifted costs associated to this process. As the process of maintaining a cathode plates constantly changing process, with respect to maintenance strategies in the system design SIGEP recognizing the flexibility and reuse in the design of system components, this achieved thro...

  6. Design of Continuous Reactor Systems for API Production

    DEFF Research Database (Denmark)

    Pedersen, Michael Jønch

    in continuous reactor setups. Grignard chemistry encompasses a very powerful reaction type frequently applied in the pharmaceutical industry, for the formation of new carbon-carbon bonds. Three Grignard addition reactions have been studied, all having very different behaviors related to aspects of reaction......-scale production equipment enabled complete replacement of the existing batch production of this intermediate. The crowning achievement in this work was the realization of continuous laboratory reactor setups capable of manufacturing the entire GMP portion of the synthesis of melitracen HCl at H. Lundbeck A...... able to be coupled to construct a single continuous reactor facility for manufacturing melitracen HCl. The study of Grignard addition reactions to the three different substrates investigated in this thesis has culminated in a methodology by which reaction engineering decisions can be guided...

  7. Multi-stage microbial system for continuous hydrogen production

    Science.gov (United States)

    Kosourov, Sergey; Ghirardi, Maria L.; Seibert, Michael

    2010-06-08

    A method of using sequential chemostat culture vessels to provide continuous H.sub.2 production, in which photosynthetic O.sub.2 evolution and H.sub.2 photoproduction are separated physically into two separate bioreactors, comprising: a) growing a microorganism culture able to continuously generate H.sub.2 by photosynthetically producing cells at about the early-to-late log state in a first photobioreactor operating as a sulfur chemostat under aerobic and/or conditions; b) continuously feeding cells from the first photobioreactor to a second photobioreactor operating under anaerobic conditions and sulfur deprivation conditions resulting from constant uptake of sulfate in the first bioreactor and a low rate of culture flow between the first and second bioreactors, for induction of hydrogenase and H.sub.2 photoproduction to allow for continuous cultivation of the microorganism's cells in the first photobioreactor and constant H.sub.2 production in the second photobioreactor, and c) H.sub.2 gas from the second photobioreactor.

  8. Damage induced by continued corrosion in concrete repair systems

    NARCIS (Netherlands)

    Luckovic, M.; Savija, B.; Schlangen, E.

    2014-01-01

    Corrosion of steel reinforcement is the main cause of deterioration in reinforced concrete structures. After the repair, corrosion of the steel might continue and even accelerate. While the development of the corrosion cell depends on many parameters and is difficult to control, the occurrence of vi

  9. Control uncertain continuous-time chaotic dynamical system

    Institute of Scientific and Technical Information of China (English)

    齐冬莲; 赵光宙

    2003-01-01

    The new chaos control method presented in this paper is useful for taking advantage of chaos. Based on sliding mode control theory, this paper provides a switching manifold controlling strategy of chaotic system, and also gives a kind of adaptive parameters estimated method to estimate the unknown systems' parameters by which chaotic dynamical system can be synchronized. Taking the Lorenz system as example, and with the help of this controlling strategy, we can synchronize chaotic systems with unknown parameters and different initial conditions.

  10. Control uncertain continuous-time chaotic dynamical system.

    Science.gov (United States)

    Qi, Dong-Lian; Zhao, Guang-Zhou

    2003-01-01

    The new chaos control method presented in this paper is useful for taking advantage of chaos. Based on sliding mode control theory, this paper provides a switching manifold controlling strategy of chaotic system, and also gives a kind of adaptive parameters estimated method to estimate the unknown systems' parameters by which chaotic dynamical system can be synchronized. Taking the Lorenz system as example, and with the help of this controlling strategy, we can synchronize chaotic systems with unknown parameters and different initial conditions.

  11. Patient Experienced Continuity of Care in the Psychiatric Healthcare System

    DEFF Research Database (Denmark)

    Jensen, Natasja Koitzsch; Johansen, Katrine Schepelern; Kastrup, Marianne

    2014-01-01

    , developed in 2004 by Joyce et al., which encompasses four domains: accessibility, individualised care, relationship base and service delivery. Results: Investigating continuity of care, we found issues of specific concern to immigrants and refugees, but also commonalities across the groups....... For accessibility, areas pertinent to immigrants and refugees include lack of knowledge concerning mental illness and obligations towards children. In terms of Int. J. Environ. Res. Public Health 2014, 11 9740 individualised care, trauma, additional vulnerability, and taboo concerning mental illness were...... are complex and diverse and the patient perspective of continuity of care provides important insight into the delivery of care. The study highlights the importance of person-centred care irrespective of migration background though it may be beneficial to have an awareness of areas that may be of more specific...

  12. Breaking Gaussian incompatibility on continuous variable quantum systems

    Energy Technology Data Exchange (ETDEWEB)

    Heinosaari, Teiko, E-mail: teiko.heinosaari@utu.fi [Turku Centre for Quantum Physics, Department of Physics and Astronomy, University of Turku, FI-20014 Turku (Finland); Kiukas, Jukka, E-mail: jukka.kiukas@aber.ac.uk [Department of Mathematics, Aberystwyth University, Penglais, Aberystwyth, SY23 3BZ (United Kingdom); Schultz, Jussi, E-mail: jussi.schultz@gmail.com [Turku Centre for Quantum Physics, Department of Physics and Astronomy, University of Turku, FI-20014 Turku (Finland); Dipartimento di Matematica, Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133 Milano (Italy)

    2015-08-15

    We characterise Gaussian quantum channels that are Gaussian incompatibility breaking, that is, transform every set of Gaussian measurements into a set obtainable from a joint Gaussian observable via Gaussian postprocessing. Such channels represent local noise which renders measurements useless for Gaussian EPR-steering, providing the appropriate generalisation of entanglement breaking channels for this scenario. Understanding the structure of Gaussian incompatibility breaking channels contributes to the resource theory of noisy continuous variable quantum information protocols.

  13. 15 CFR 911.7 - Continuation of the NOAA Data Collection Systems.

    Science.gov (United States)

    2010-01-01

    ... REGULATIONS POLICIES AND PROCEDURES CONCERNING USE OF THE NOAA SPACE-BASED DATA COLLECTION SYSTEMS § 911.7 Continuation of the NOAA Data Collection Systems. (a) NOAA expects to continue to operate DCS on its... 15 Commerce and Foreign Trade 3 2010-01-01 2010-01-01 false Continuation of the NOAA...

  14. Health SA Gesondheid

    African Journals Online (AJOL)

    Health SA Gesondheid - Journal of Interdisciplinary Health Sciences is an open access, .... Chokwe M. Setati, Zerish Z. Nkosi, 130-137 ... Movement as a critical concept in model generation to attain wholeness · EMAIL FREE FULL TEXT ...

  15. O mix público-privado no Sistema de Saúde Brasileiro: financiamento, oferta e utilização de serviços de saúde The public-private mix in the Brazilian Health System: financing, delivery and utilization of health services

    Directory of Open Access Journals (Sweden)

    Isabela Soares Santos

    2008-10-01

    Full Text Available O artigo analisa o mix público-privado do sistema de saúde brasileiro a partir da oferta, utilização e financiamento dos serviços de saúde. Contempla os subsídios públicos para o setor privado. Trata-se de um estudo quantitativo, baseado em dados secundários provenientes de bases de dados oficiais. Mostra que existem desigualdades na oferta e na utilização de serviços em prol da população com plano de saúde, em decorrência da peculiar inserção do setor suplementar, que oferece cobertura suplementar e duplicada ao sistema público (SUS, sem desconsiderar que outros fatores podem determinar o uso de serviços de saúde e aumentar as desigualdades. A análise é feita com base na tipologia de mix público-privado desenvolvida pela OECD em 2004, que auxilia a compreensão das desigualdades que ocorrem em cada tipo de mix, e mostra que as que ocorrem no sistema de saúde brasileiro se dão pelo fato de a cobertura de serviços ofertados pelo segmento de seguro privado ser duplicada à cobertura de serviços do SUS. Ainda, as desigualdades verificadas no sistema de saúde brasileiro ocorrem num sistema de saúde em que o financiamento público ao SUS é minoritário e existem grandes subsídios públicos para o setor privado.This paper analyzes the public-private mix in the Brazilian Health System from the perspective of health care delivery, utilization and financing. Moreover, this quantitative study based on secondary data from official databases contemplates the subsidies granted by the government to the private sector. It shows the existence of some inequalities favoring the population having private health plans, a result of the peculiar participation of the private sector in the Brazilian Health System not only offering supplementary care but duplicating the coverage offered by the public system (called SUS. The analysis is made on the basis of the classification of public-private mix in Health Systems developed by the OECD in

  16. SalSA status

    Energy Technology Data Exchange (ETDEWEB)

    Connolly, Amy [Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT (United Kingdom)], E-mail: amyc@hep.ucl.ac.uk

    2009-06-01

    I review the status of SalSA, a proposed antenna array in a large volume salt formation for detecting ultra-high energy neutrinos. We report on measurements taken in 2007 of attenuation lengths in the 125-900 MHz frequency range at the Cote Blanche salt mine near New Iberia, Louisiana, which is the most precise in situ measurement of attenuation lengths in salt to date. We comment on the impact of these measurements on the feasibility of SalSA.

  17. Avanços e desafios do planejamento no Sistema Único de Saúde Advances and challenges of the Unified Health System planning

    Directory of Open Access Journals (Sweden)

    Fabíola Sulpino Vieira

    2009-10-01

    Full Text Available Desde a criação do Sistema Único de Saúde (SUS, os gestores têm despendido esforços para a discussão do planejamento, enquanto componente fundamental da gestão, e feito tentativas para institucionalizá-lo.Entretanto, mesmo com os avanços, há aspectos que se colocam de forma prioritária e que constituem desafios para a institucionalização do planejamento no SUS. Nesse sentido, este estudo procura descrever a evolução do planejamento no sistema, por meio da análise de documentos legais e materiais técnicos publicados pelo Ministério da Saúde. A partir da concepção de planejamento presente nessas publicações, faz-se a reflexão sobre a abordagem empregada, considerando os instrumentos de gestão estabelecidos e sua vinculação às abordagens teórico-metodológicas mais aceitas atualmente para o planejamento em saúde. Para finalizar, apontam-se aspectos que precisam ser observados para a efetivação do planejamento ascendente no SUS.Since the Unified Health System creation, managers have been expending efforts to discuss the planning and, made attempts to institutionalize it, considering that it's a basic management component. However, despite advances obtained, there are aspects that are priorities and that constitute challenges for the institutionalization of the planning at the Unified Health System. In this direction, this study describes the planning evolution in the system, by legal and technician material analysis of published documents by Ministry of Health. From the planning conception in these publications, it leads a reflection on the used approach, considering the established management instruments, and its entailing to the more currently accepted theory and methodology of health planning. Aspects that need to be observed are pointed for the effectiveness to ascendant planning at the Unified Health System.

  18. Continuous, saturation, and discontinuous tokamak plasma vertical position control systems

    Energy Technology Data Exchange (ETDEWEB)

    Mitrishkin, Yuri V., E-mail: y_mitrishkin@hotmail.com [M. V. Lomonosov Moscow State University, Faculty of Physics, Moscow 119991 (Russian Federation); Pavlova, Evgeniia A., E-mail: janerigoler@mail.ru [M. V. Lomonosov Moscow State University, Faculty of Physics, Moscow 119991 (Russian Federation); Kuznetsov, Evgenii A., E-mail: ea.kuznetsov@mail.ru [Troitsk Institute for Innovation and Fusion Research, Moscow 142190 (Russian Federation); Gaydamaka, Kirill I., E-mail: k.gaydamaka@gmail.com [V. A. Trapeznikov Institute of Control Sciences of the Russian Academy of Sciences, Moscow 117997 (Russian Federation)

    2016-10-15

    Highlights: • Robust new linear state feedback control system for tokamak plasma vertical position. • Plasma vertical position relay control system with voltage inverter in sliding mode. • Design of full models of multiphase rectifier and voltage inverter. • First-order unit approximation of full multiphase rectifier model with high accuracy. • Wider range of unstable plant parameters of stable control system with multiphase rectifier. - Abstract: This paper is devoted to the design and comparison of unstable plasma vertical position control systems in the T-15 tokamak with the application of two types of actuators: a multiphase thyristor rectifier and a transistor voltage inverter. An unstable dynamic element obtained by the identification of plasma-physical DINA code was used as the plasma model. The simplest static feedback state space control law was synthesized as a linear combination of signals accessible to physical measurements, namely the plasma vertical displacement, the current, and the voltage in a horizontal field coil, to solve the pole placement problem for a closed-loop system. Only one system distinctive parameter was used to optimize the performance of the feedback system, viz., a multiple real pole. A first-order inertial unit was used as the rectifier model in the feedback. A system with a complete rectifier model was investigated as well. A system with the voltage inverter model and static linear controller was brought into a sliding mode. As this takes place, real time delays were taken into account in the discontinuous voltage inverter model. The comparison of the linear and sliding mode systems showed that the linear system enjoyed an essentially wider range of the plant model parameters where the feedback system was stable.

  19. On the quantization of continuous non-ultralocal integrable systems

    CERN Document Server

    Melikyan, A

    2016-01-01

    We discuss the quantization of non-ultralocal integrable models directly in the continuous case, using the example of the Alday-Arutyunov-Frolov model. We show that by treating fields as distributions and regularizing the operator product, it is possible to avoid all the singularities, and allow to obtain results consistent with perturbative calculations. We illustrate these results by considering the reduction to the massive free fermion model and extracting the quantum Hamiltonian as well as other conserved charges directly from the regularized trace identities. Moreover, we show that our regularization recovers Maillet's prescription in the classical limit.

  20. A Generalized Eigensolver based on Smoothed Aggregation (GES-SA) for Initializing Smoothed Aggregation Multigrid (SA)

    Energy Technology Data Exchange (ETDEWEB)

    Brezina, M; Manteuffel, T; McCormick, S; Ruge, J; Sanders, G; Vassilevski, P S

    2007-05-31

    Consider the linear system Ax = b, where A is a large, sparse, real, symmetric, and positive definite matrix and b is a known vector. Solving this system for unknown vector x using a smoothed aggregation multigrid (SA) algorithm requires a characterization of the algebraically smooth error, meaning error that is poorly attenuated by the algorithm's relaxation process. For relaxation processes that are typically used in practice, algebraically smooth error corresponds to the near-nullspace of A. Therefore, having a good approximation to a minimal eigenvector is useful to characterize the algebraically smooth error when forming a linear SA solver. This paper discusses the details of a generalized eigensolver based on smoothed aggregation (GES-SA) that is designed to produce an approximation to a minimal eigenvector of A. GES-SA might be very useful as a standalone eigensolver for applications that desire an approximate minimal eigenvector, but the primary aim here is for GES-SA to produce an initial algebraically smooth component that may be used to either create a black-box SA solver or initiate the adaptive SA ({alpha}SA) process.

  1. Postos comunitários: uma alternativa para o sistema de saúde Community health centers: an alternative for the health system

    Directory of Open Access Journals (Sweden)

    João Claudio Lara Fernandes

    1997-01-01

    Full Text Available Considerando a atual conjuntura de reorganização das relações entre o Estado e a sociedade civil, os autores propõem, para a área da saúde, uma alternativa intermediária entre as propostas estatizantes e privatizantes, que consiste na organização de postos de saúde geridos por entidades locais e conveniados ao Sistema Único de Saúde. Para sustentar esta proposição, é apresentada a experiência desenvolvida há 12 anos na favela da Rocinha, onde uma associação de moradores construiu e administra um serviço de saúde. É destacada a eficiência do trabalho, o que é atribuído a um maior controle social sobre o serviço, bem como às suas características geográficas, que favorecem a utilização de abordagens terapêuticas diversificadas. São apresentadas propostas que visam a dar uma maior sustentação a esta alternativa, como a elaboração de convênios diretos com associações de moradores, atualmente impedidos pela regulamentação do Ministério da Saúde, e a ampliação a estes postos de alguns critérios de remuneração, ora restritos a instituições governamentais.Reflecting on the current reorganization of the relationship between the state and civil society, the health care field is involved in an intense debate over the organization and use of government and private health services. The authors propose an alternative, consisting of the implementation of primary health care clinics, managed by local institutions and funded by the Unified Health System. To support this proposition, they report on the current experience at the Rocinha slum in Rio de Janeiro, where a community health center was built by the neighborhood association 12 years ago and has been managed by the community since then. The hospital referral rate at the clinic, requests for laboratory tests, and use of precriptions have been considerably limited, although these services are available. These low rates are attributed to the possibility of

  2. A hybrid continuous-wave terahertz imaging system

    Energy Technology Data Exchange (ETDEWEB)

    Dolganova, Irina N., E-mail: in.dolganova@gmail.com; Zaytsev, Kirill I., E-mail: kirzay@gmail.ru; Metelkina, Anna A.; Karasik, Valeriy E.; Yurchenko, Stanislav O., E-mail: st.yurchenko@mail.ru [Bauman Moscow State Technical University, 2nd Baumanskaya str. 5, Moscow 105005 (Russian Federation)

    2015-11-15

    A hybrid (active-passive mode) terahertz (THz) imaging system and an algorithm for imaging synthesis are proposed to enhance the THz image quality. The concept of image contrast is used to compare active and passive THz imaging. Combining the measurement of the self-emitted radiation of the object with the back-scattered source radiation measurement, it becomes possible to use the THz image to retrieve maximum information about the object. The experimental results confirm the advantages of hybrid THz imaging systems, which can be generalized for a wide range of applications in the material sciences, chemical physics, bio-systems, etc.

  3. Advances in Modern Capacitive ECG Systems for Continuous Cardiovascular Monitoring

    Directory of Open Access Journals (Sweden)

    A. Schommartz

    2011-01-01

    Full Text Available The technique of capacitive electrocardiography (cECG is very promising in a flexible manner. Already integrated into several everyday objects, the single lead cECG system has shown that easy-to-use measurements of electrocardiograms are possible without difficult preparation of the patients. Multi-channel cECG systems enable the extraction of ECG signals even in the presence of coupled interferences, due to the additional redundant information. Thus, this paper presents challenges for electronic hardware design to build on developments in recent years, going from the one-lead cECG system to multi-channel systems in order to provide robust measurements - e.g. even while driving an automobile.

  4. Cognitive Factors in Predicting Continued Use of Information Systems with Technology Adoption Models

    Science.gov (United States)

    Huang, Chi-Cheng

    2017-01-01

    Introduction: The ultimate viability of an information system is dependent on individuals' continued use of the information system. In this study, we use the technology acceptance model and the theory of interpersonal behaviour to predict continued use of information systems. Method: We established a Web questionnaire on the mySurvey Website and…

  5. Variational approximations to homoclinic snaking in continuous and discrete systems

    CERN Document Server

    Matthews, P C

    2011-01-01

    Localised structures appear in a wide variety of systems, arising from a pinning mechanism due to the presence of a small-scale pattern or an imposed grid. When there is a separation of lengthscales, the width of the pinning region is exponentially small and beyond the reach of standard asymptotic methods. We show how this behaviour can be obtained using a variational method, for two systems. In the case of the quadratic-cubic Swift-Hohenberg equation, this gives results that are in agreement with recent work using exponential asymptotics. Secondly, the method is applied to a discrete system with cubic-quintic nonlinearity, giving results that agree well with numerical simulations.

  6. Bayesian parameter inference from continuously monitored quantum systems

    DEFF Research Database (Denmark)

    Gammelmark, Søren; Mølmer, Klaus

    2013-01-01

    We review the introduction of likelihood functions and Fisher information in classical estimation theory, and we show how they can be defined in a very similar manner within quantum measurement theory. We show that the stochastic master equations describing the dynamics of a quantum system subject...... to a definite set of measurements provides likelihood functions for unknown parameters in the system dynamics, and we show that the estimation error, given by the Fisher information, can be identified by stochastic master equation simulations. For large parameter spaces we describe and illustrate the efficient...

  7. A equidade no sistema de saúde na visão de bioeticistas brasileiros Equity in the health system according to brazilian bioethicists

    Directory of Open Access Journals (Sweden)

    Paulo Antônio de Carvalho Fortes

    2010-01-01

    Full Text Available OBJETIVO: Conhecer a atribuição de significado dada por bioeticistas brasileiros quanto à equidade no sistema de saúde. MÉTODOS: Pesquisa qualitativa, exploratória. Entre julho de 2007 e julho de 2008, foram entrevistados 20 bioeticistas, dirigentes e ex-dirigentes da Sociedade Brasileira de Bioética e de suas regionais (2005-2008. O tratamento dos dados foi realizado por análise de discurso. RESULTADOS: Os discursos levaram ao estabelecimento das seguintes ideias centrais: tratar desigualmente os desiguais conforme suas necessidades; equidade e desigualdades compensadas; equidade e maximização dos benefícios; equidade e mérito social; equidade e direitos. CONCLUSÃO: Os resultados da pesquisa evidenciam a existência entre os bioeticistas pesquisados de uma diversidade de interpretações sobre equidade no sistema de saúde, reforçando a noção de que é difícil, no mundo contemporâneo, decidir sobre o que seria um sistema justo e equânime.OBJECTIVE: To understand the meaning assigned to ethical thought that should guide Brazilian bioethicists regarding the equity of a Health System. METHODS: Between July 2007 and July 2008, 20 bioethicists, directors and former directors of the 'Sociedade Brasileira de Bioética' (Bioethics Brazilian Society and their regional administrations were interviewed. RESULTS: Discourse analysis led to definition of these main points: To treat the unequals unequally according to their needs; Compensate equity and inequalities; Distributive justice and maximization of benefits; Justice and social merit and Justice and rights. CONCLUSION: Research results disclose a pluralism of values that jeopardizes determination of moral equity in the health system., Exhausting dialogues among all interested parties are necessary to reach a possible consensus.

  8. Bayesian parameter inference from continuously monitored quantum systems

    DEFF Research Database (Denmark)

    Gammelmark, Søren; Mølmer, Klaus

    2013-01-01

    We review the introduction of likelihood functions and Fisher information in classical estimation theory, and we show how they can be defined in a very similar manner within quantum measurement theory. We show that the stochastic master equations describing the dynamics of a quantum system subject...

  9. Adjoint analysis of mixed continuous/discrete systems in simulink

    NARCIS (Netherlands)

    Bucco, D.; Weiss, M.

    2010-01-01

    The adjoint simulation method is a well established and efficient tool for gaining insight and understanding of key parameters affecting the behaviour and performance of a guided missile homing system. Traditionally, the method has been employed by various missile companies during the preliminary an

  10. Complex systems dynamics in aging: new evidence, continuing questions.

    Science.gov (United States)

    Cohen, Alan A

    2016-02-01

    There have long been suggestions that aging is tightly linked to the complex dynamics of the physiological systems that maintain homeostasis, and in particular to dysregulation of regulatory networks of molecules. This review synthesizes recent work that is starting to provide evidence for the importance of such complex systems dynamics in aging. There is now clear evidence that physiological dysregulation--the gradual breakdown in the capacity of complex regulatory networks to maintain homeostasis--is an emergent property of these regulatory networks, and that it plays an important role in aging. It can be measured simply using small numbers of biomarkers. Additionally, there are indications of the importance during aging of emergent physiological processes, functional processes that cannot be easily understood through clear metabolic pathways, but can nonetheless be precisely quantified and studied. The overall role of such complex systems dynamics in aging remains an important open question, and to understand it future studies will need to distinguish and integrate related aspects of aging research, including multi-factorial theories of aging, systems biology, bioinformatics, network approaches, robustness, and loss of complexity.

  11. Adjoint analysis of mixed continuous/discrete systems in simulink

    NARCIS (Netherlands)

    Bucco, D.; Weiss, M.

    2010-01-01

    The adjoint simulation method is a well established and efficient tool for gaining insight and understanding of key parameters affecting the behaviour and performance of a guided missile homing system. Traditionally, the method has been employed by various missile companies during the preliminary

  12. Continuous Improvement in California Education: Data Systems and Policy Learning

    Science.gov (United States)

    Loeb, Susanna; Plank, David N.

    2007-01-01

    The "Getting Down to Facts" (GDTF) studies released in March 2007 offered a clear diagnosis of the issues facing California's education system. Now, as California moves beyond the facts and begins the search for ways to improve the performance of California schools and students, the state faces a critical policy dilemma. On the one hand,…

  13. 77 FR 13997 - Quality Assurance Requirements for Continuous Opacity Monitoring Systems at Stationary Sources

    Science.gov (United States)

    2012-03-08

    ... AGENCY 40 CFR Part 60 RIN 2060-AH23 Quality Assurance Requirements for Continuous Opacity Monitoring... rule titled, ``Quality Assurance Requirements for Continuous Opacity Monitoring Systems at Stationary....regulations.gov or in hard copy at the Procedure 3--Quality Assurance Requirements for Continuous Opacity...

  14. Weaving properties of generalized continuous frames generated by an iterated function system

    Science.gov (United States)

    Vashisht, L. K.; Deepshikha

    2016-12-01

    In this paper, we present some classes of generalized continuous weaving frames. It is shown that if the sets of lower frame bounds of discrete frames for a Hilbert space are bounded below, then the corresponding generalized continuous frames are woven. Necessary and sufficient conditions for generalized continuous weaving frames generated by an iterated function system are given.

  15. 2016 Romanian Parliamentary Election. Between Political Change and Systemic Continuity

    Directory of Open Access Journals (Sweden)

    Daniel Buti

    2017-06-01

    Full Text Available The article represents an analysis of the 2016 Romanian general elections in terms of two types of factors. The first factor is a technical one and it is represented by the electoral law, specifically the principle and the methods of converting votes into mandates. The evaluation of the RP system used to elect MPs aims its effects which were operationalized by the electoral disproportionality index. The second factor is a political one and it aims both quantitative and qualitative changes generated by the 8th electoral moment of the Romanian postcommunism. It’s about the party system architecture, but also the political composition of the new parliament. Specifically, the article assesses whether the desideratum of „reforming the political class”, which has a massive presence in the public space, finds its counterpart in the electoral options expressed in the 2016 parliamentary elections.

  16. Methods of mathematical modelling continuous systems and differential equations

    CERN Document Server

    Witelski, Thomas

    2015-01-01

    This book presents mathematical modelling and the integrated process of formulating sets of equations to describe real-world problems. It describes methods for obtaining solutions of challenging differential equations stemming from problems in areas such as chemical reactions, population dynamics, mechanical systems, and fluid mechanics. Chapters 1 to 4 cover essential topics in ordinary differential equations, transport equations and the calculus of variations that are important for formulating models. Chapters 5 to 11 then develop more advanced techniques including similarity solutions, matched asymptotic expansions, multiple scale analysis, long-wave models, and fast/slow dynamical systems. Methods of Mathematical Modelling will be useful for advanced undergraduate or beginning graduate students in applied mathematics, engineering and other applied sciences.

  17. Continuous and distributed systems II theory and applications

    CERN Document Server

    Zgurovsky, Mikhail

    2015-01-01

    As in the previous volume on the topic, the authors close the gap between abstract mathematical approaches, such as applied methods of modern algebra and analysis, fundamental and computational mechanics, nonautonomous and stochastic dynamical systems, on the one hand, and practical applications in nonlinear mechanics, optimization, decision making theory and control theory on the other. Readers will also benefit from the presentation of modern mathematical modeling methods for the numerical solution of complicated engineering problems in biochemistry, geophysics, biology and climatology. This compilation will be of interest to mathematicians and engineers working at the interface of these fields. It presents selected works of the joint seminar series of Lomonosov Moscow State University and the Institute for Applied System Analysis at National Technical University of Ukraine “Kyiv Polytechnic Institute”. The authors come from Brazil, Germany, France, Mexico, Spain, Poland, Russia, Ukraine, and the USA. ...

  18. A New GPS System for Continuous Deformation Monitoring

    Institute of Scientific and Technical Information of China (English)

    2000-01-01

    This paper presents a multi-antenna GPS based system developed for localcontinuous deformation monitoring. Due to a large number of points that needs to be monitored,the standard approaches of using permanent GPS receiver arrays will cause high cost. Iteventually becomes the limiting factor for large-scale use of GPS in these application areas.Multi-antenna GPS system allows a number of GPS antennas to be linked to one GPS receiverby a specially designed electronic component, i.e. the so-called GPS multi-antenna switch(GMS), The receiver takes data sequentially from each of the antennas attached to thereceiver. A distinctive advantage of the approach is that one GPS receiver can be used tomonitor more than one point. The cost per monitored point (i. e. the expenses of hardware)istherefore significantly reduced.

  19. Vitamin D and systemic lupus erythematosus: continued evolution.

    Science.gov (United States)

    Yap, Kristy S; Morand, Eric F

    2015-02-01

    Vitamin D is a steroid hormone that has well-established roles in calcium and bone metabolism. Vitamin D has more recently become recognized for its role in the immune response and its potential immunomodulatory effects in autoimmune diseases, including systemic lupus erythematosus (SLE). This review provides a summary of the recent literature regarding vitamin D and SLE, as well as current recommendations for vitamin D supplementation in patients with SLE.

  20. Continuity and change in Mexico's Public Health System

    Directory of Open Access Journals (Sweden)

    Mónica Uribe Gómez

    2013-07-01

    Full Text Available This paper examines the reform process within the Mexican health system undertaken since the eighties that led to an increasing privatization of health services. It argues that such process have been led by a small group of techno-bureaucratic actors that have changed institutional rules according to their interests without considering the interests of local governments, public services providers and public health services users.

  1. [Current status of continuous subcutaneous insulin infusion and continuous glucose monitoring systems in the Community of Madrid].

    Science.gov (United States)

    Arranz Martín, Alfonso; Calle Pascual, Alfonso; Del Cañizo Gómez, Francisco Javier; González Albarrán, Olga; Lisbona Gil, Arturo; Botella Serrano, Marta; Pallardo Sánchez, Luis Felipe

    2015-04-01

    To analyze the available information about continuous subcutaneous insulin infusion (CSII) and continuous glucose monitoring (CGM) systems in the public health care system of the Community of Madrid. A survey consisting of 31 items was sent to the 28 endocrinology department of the Madrid public hospitals. Items focused on CSII and CGM and included patients' registrations, as well as data regarding healthcare, administrative, and logistic aspects. Responses from a total of 20 hospitals where these procedures are used were received from March 2013 to May 2014. Data about pediatric patients were obtained from adult endocrinology departments, except for two hospitals which directly reported the information. A total of 1256 CSII pumps were recorded in the Madrid region, of which 1089 were used by adults, and the remaining 167 by pediatric patients. During 2013, 151 new CSII systems were implanted (12% of the total), while 14 pumps were withdrawn. Availability of human resources (medical assistance) and the number of staff practitioners experienced in management of these systems widely varied between hospitals. Eighty-five percent of hospitals used retrospective CGM systems, and 40% routinely placed them before starting an insulin pump. Thirteen hospitals (65%) used long-term, real-time CGM systems in selected cases (a total of 67 patients). Use of these technologies in diabetes is unequal between public health care hospitals in Madrid, and is still significantly lower as compared to other countries with similar incomes. However, there appears to be a trend to an increase in their use. Copyright © 2014 SEEN. Published by Elsevier España, S.L.U. All rights reserved.

  2. Vision servoing of robot systems using piecewise continuous controllers and observers

    Science.gov (United States)

    Wang, H. P.; Vasseur, C.; Christov, N.; Koncar, V.

    2012-11-01

    This paper deals with the visual servoing of X-Y robot systems using low cost CCD camera. The proposed approach is based on the theory of piecewise continuous systems which are a particular class of hybrid systems with autonomous switching and controlled impulses. Visual trajectory tracking systems comprising piecewise continuous controllers and observers, are developed. Real-time results are given to illustrate the effectiveness of the proposed visual control system.

  3. Oscillometric continuous blood pressure sensing for wearable health monitoring system

    CERN Document Server

    Gelao, Gennaro; Passaro, Vittorio M N; Perri, Anna Gina

    2015-01-01

    In this paper we present an acquisition chain for the measurement of blood arterial pressure based on the oscillometric method. This method does not suffer from any limitation as the well-known auscultatory method and it is suited for wearable health monitoring systems. The device uses a pressure sensor whose signal is filtered, digitalized and analyzed by a microcontroller. Local analysis allows the evaluation of the systolic and diastolic pressure values which can be used for local alarms, data collection and remote monitoring.

  4. Satellite Constellation Design with Adaptively Continuous Ant System Algorithm

    Institute of Scientific and Technical Information of China (English)

    He Quan; Han Chao

    2007-01-01

    The ant system algorithm (ASA) has proved to be a novel meta-heuristic algorithm to solve many multivariable problems. In this paper, the earth coverage of satellite constellation is analyzed and a (n + 1)-fold coverage rate is put forward to evaluate the coverage performance of a satellite constellation. An optimization model of constellation parameters is established on the basis of the coverage performance. As a newly developed method, ASA can be applied to optimize the constellation parameters. In order to improve the ASA,a rule for adaptive number of ants is proposed, by which the search range is obviously enlarged and the convergence speed increased.Simulation results have shown that the ASA is more quick and efficient than other methods.

  5. Mobile Audience Response Systems at a Continuing Medical Education Conference.

    Science.gov (United States)

    Beaumont, Alexandra; Gousseau, Michael; Sommerfeld, Connor; Leitao, Darren; Gooi, Adrian

    2017-01-01

    Mobile audience response systems (mARS) are electronic systems allowing speakers to ask questions and audience members to respond anonymously and immediately on a screen which enables learners to view their peers' responses as well as their own. mARS encourages increased interaction and active learning. This study aims to examine the perceptions of audience members and speakers towards the implementation of mARS at a national medical conference. mARS was implemented at the CSO Annual Meeting in Winnipeg 2015. Eleven presenters agreed to participate in the mARS trial. Both audience and presenters received instructions. Five-point Likert questions and short answer questions were emailed to all conference attendees and the data was evaluated. Twenty-seven participants responded, 23 audience members and 4 instructors. Overall, responders indicated improved attention, involvement, engagement and recognition of audience's understanding of topics with the use of mARS. mARS was perceived as easy to use, with clear instructions, and the majority of respondents expressed an interest in using mARS in more presentations and in future national medical conferences. Most respondents preferred lectures with mARS over lectures without mARS. Some negative feedback on mARS involved dissatisfaction with how some presenters implemented mARS into the workshops. Overall mARS was perceived positively with the majority of respondents wanting mARS implemented in more national medical conferences. Future studies should look at how mARS can be used as an educational tool to help improve patient outcomes.

  6. SYSTEM OF DISTANCE LEARNING ADMINISTRATION IN CONTINUING EDUCATION FOR PRIMARY SCHOOL TEACHERS

    OpenAIRE

    MUKOVIZ, Oleksii P.

    2015-01-01

    The article describes the peculiarities of the organization of primary school teachers continuing education by means of web technologies, presents the website of the system of primary school teachers continuing education (http://sno.udpu.org.ua), and analyzes its content and structure. The website of the system of primary school teachers continuing education is created with the help of four instrumental platforms WordPress, Moodle, PhpBB and “cloud” technologies from Microsoft (SkyDrive, Padl...

  7. A reforma do sistema de saúde no Brasil e o Programa de Saúde da Família The reorganization of the brazilian health system, and the Family Health Program

    Directory of Open Access Journals (Sweden)

    Ana Luiza D'ávila Viana

    2005-01-01

    Full Text Available O texto examina as etapas de formulação e implementação do Programa de Saúde da Família, indicando as estratégias esboçadas e analisando os resultados, com vistas a extrair lições para o aperfeiçoamento da política de saúde no Brasil. Foram identificados três modelos de implantação do programa: Modelo Regional, Modelo Singular e Modelo Principiante. O primeiro se caracteriza pelo desenvolvimento regional do programa, sendo fortemente influenciado por uma política estadual de apoio à mudança nas práticas assistenciais; o segundo desenvolve uma experiência singular, sem envolvimento de outras esferas de governo; e o terceiro se desenvolve de forma incipiente e incerta.The text examines the genesis of the Family Health Program, identifying the formulation and implementation strategies and progress indicators aiming at learning the lessons that may help improve Brazilian health policies. Three models of program implementation were identified: a Regional Model, a Singular Model and a Beginner's Model. The first is characterized by the regional development of the program, and is strongly influenced by a state policy of support for change in the health care practice; the second developed a singular experience, without involvement of any other government authority; and the third model is developed in an incipient and uncertain way.

  8. A continuous two stage solar coal gasification system

    Science.gov (United States)

    Mathur, V. K.; Breault, R. W.; Lakshmanan, S.; Manasse, F. K.; Venkataramanan, V.

    The characteristics of a two-stage fluidized-bed hybrid coal gasification system to produce syngas from coal, lignite, and peat are described. Devolatilization heat of 823 K is supplied by recirculating gas heated by a solar receiver/coal heater. A second-stage gasifier maintained at 1227 K serves to crack remaining tar and light oil to yield a product free from tar and other condensables, and sulfur can be removed by hot clean-up processes. CO is minimized because the coal is not burned with oxygen, and the product gas contains 50% H2. Bench scale reactors consist of a stage I unit 0.1 m in diam which is fed coal 200 microns in size. A stage II reactor has an inner diam of 0.36 m and serves to gasify the char from stage I. A solar power source of 10 kWt is required for the bench model, and will be obtained from a central receiver with quartz or heat pipe configurations for heat transfer.

  9. Ultrasonic system for continuous washing of textiles in liquid layers.

    Science.gov (United States)

    Gallego-Juarez, Juan A; Riera, Enrique; Acosta, Victor; Rodríguez, Germán; Blanco, Alfonso

    2010-01-01

    The use of ultrasonic energy for washing of textiles has been tried several times without achieving practical development. In fact, the softness of the fibres makes the cavitation to produce small erosion effect and the reticulate structure of the fabric favours the formation of air bubble layers which obstruct wave penetration. In addition, a high proportion of water with respect to the wash load and a certain water degassing is required to assure efficiency and homogeneity in the wash performance. Such requirements have hindered the commercial development of the ultrasonic washing machines for domestic purposes. For specific industrial applications, a great part of these limitations may be overcome. This article deals with a new process in which the fabric is exposed to the ultrasonic field in a flat format. Such process has been implemented at laboratory and at semi-industrial stage by using specially designed power ultrasonic transducers with rectangular plate radiators. The cleaning effect is produced by the intense cavitation field generated by the plate radiator within a thin layer of liquid where the fabric is introduced. The homogeneity of such effect is achieved by the successive exposure of all the fabric areas to the intense acoustic field. In this paper the structure and performance of the developed system are shown.

  10. Cruise Ships: Continuity and Change in the World System

    Directory of Open Access Journals (Sweden)

    Francisca Oyogoa

    2016-03-01

    Full Text Available Cruise ships present a useful context to study contemporary developments in globalization.  U.S.-owned cruise companies have managed to create the “ideal” context for contemporary corporations: very little government oversight of labor relations, an available pool of very cheap labor dispersed across the globe, lax environmental regulations, high profit margins, and corporate tax rates around 1%.  A typical cruise ship leaving the U.S. contains workers from 75 to 90 nationalities.  Crewmembers performing menial service work are recruited exclusively from “poor countries” in Asia, Eastern Europe, Latin America, and the Caribbean. Crewmembers typically sign 10-month contracts stipulating 10-14 hour workdays/7 days a week without vacation or sick days. There is a striking correlation between workers’ pay/status and their countries’ position within the world system.  Staff members are usually white Westerners, while crewmembers are exclusively from the global south. On cruises the legacies of imperialism and colonialism are often the basis of workers’ racialization as appropriate servants.

  11. 78 FR 11556 - Special Conditions: Embraer S.A., Model EMB-550 Airplane; Interaction of Systems and Structures

    Science.gov (United States)

    2013-02-19

    ... (rate of displacement of control surface, thresholds or any other system nonlinearities) must be...) Failures of the system that result in forced structural vibrations (e.g., oscillatory failures) must...

  12. 77 FR 70941 - Special Conditions: Embraer S.A., Model EMB-550 Airplane; Interaction of Systems and Structures

    Science.gov (United States)

    2012-11-28

    ... (rate of displacement of control surface, thresholds or any other system nonlinearities) must be...) Failures of the system that result in forced structural vibrations (e.g., oscillatory failures) must...

  13. 77 FR 57039 - Special Conditions: Embraer S.A., Model EMB-550 Airplane; Electronic Flight Control System...

    Science.gov (United States)

    2012-09-17

    ...; Electronic Flight Control System: Control Surface Awareness and Mode Annunciation AGENCY: Federal Aviation... control system. The applicable airworthiness regulations do not contain adequate or appropriate safety... electronic flight control system and no direct coupling from the flightdeck controller to the control surface...

  14. 78 FR 11553 - Special Conditions: Embraer S.A., Model EMB-550 Airplane; Electronic Flight Control System...

    Science.gov (United States)

    2013-02-19

    ... Airplane; Electronic Flight Control System: Control Surface Awareness and Mode Annunciation AGENCY: Federal... control system. The applicable airworthiness regulations do not contain adequate or appropriate safety... a fly-by-wire electronic flight control system and no direct coupling from the flightdeck controller...

  15. Performance evaluation of continuous blood sampling system for PET study. Comparison of three detector-systems

    CERN Document Server

    Matsumoto, K; Sakamoto, S; Senda, M; Yamamoto, S; Tarutani, K; Minato, K

    2002-01-01

    To measure cerebral blood flow with sup 1 sup 5 O PET, it is necessary to measure the time course of arterial blood radioactivity. We examined the performance of three different types of continuous blood sampling system. Three kinds of continuous blood sampling system were used: a plastic scintillator-based beta detector (conventional beta detector (BETA)), a bismuth germinate (BGO)-based coincidence gamma detector (Pico-count flow-through detector (COINC)) and a Phoswich detector (PD) composed by a combination of plastic scintillator and BGO scintillator. Performance of these systems was evaluated for absolute sensitivity, count rate characteristic, sensitivity to background gamnra photons, and reproducibility for nylon tube geometry. The absolute sensitivity of the PD was 0.21 cps/Bq for sup 6 sup 8 Ga positrons at the center of the detector. This was approximately three times higher than BETA, two times higher than COINC. The value measured with BETA was stable, even when background radioactivity was incre...

  16. Computational system identification of continuous-time nonlinear systems using approximate Bayesian computation

    Science.gov (United States)

    Krishnanathan, Kirubhakaran; Anderson, Sean R.; Billings, Stephen A.; Kadirkamanathan, Visakan

    2016-11-01

    In this paper, we derive a system identification framework for continuous-time nonlinear systems, for the first time using a simulation-focused computational Bayesian approach. Simulation approaches to nonlinear system identification have been shown to outperform regression methods under certain conditions, such as non-persistently exciting inputs and fast-sampling. We use the approximate Bayesian computation (ABC) algorithm to perform simulation-based inference of model parameters. The framework has the following main advantages: (1) parameter distributions are intrinsically generated, giving the user a clear description of uncertainty, (2) the simulation approach avoids the difficult problem of estimating signal derivatives as is common with other continuous-time methods, and (3) as noted above, the simulation approach improves identification under conditions of non-persistently exciting inputs and fast-sampling. Term selection is performed by judging parameter significance using parameter distributions that are intrinsically generated as part of the ABC procedure. The results from a numerical example demonstrate that the method performs well in noisy scenarios, especially in comparison to competing techniques that rely on signal derivative estimation.

  17. QUALITY - SOCIAL ACCOUNTABILITY - HEALTH AND SAFETY INTEGRATED MANAGEMENT SYSTEM AUDIT ACCORDING TO THE REQUIREMENTS OF ISO9001:2008, SA 8000:2008, OHSAS 18001:2007 AND ISO 19011:2011 STANDARDS

    Directory of Open Access Journals (Sweden)

    Valentina TUDOR

    2014-06-01

    Full Text Available The purpose of this paper is to present a method of perfecting the audit of the social requirements of the quality social accountability-health and safety integrated management system with the social requirements of BusinessSocial Compliance Initiative (BSCI and Supplier Ethical Data Exchange (SEDEX. The method used was tosupplement the social requirement of SA 8000:2008 standard with the additional requirements of BSCI and SEDEX.The results are based on a correspondence between the requirements of SA 8000:2008 standard and therequirements of BSCI and SEDEX codes of conducts, because some of BSCI and SEDEX requirements are moredetailed than SA 8000:2008 standard requirements which are the base for the implementation of socialrequirements of the quality-social accountability-health and safety integrated management system. A check list waselaborated with the integrated social requirements of SA 8000:2008, BSCI and SEDEX. The check list is related tochild labour, forced and compulsory labour, health and safety, freedom of association & right to collective bargaining, discrimination, disciplinary practices, working hours, remuneration and management system. Theconclusion of the paper is that the elaborated check list allows the quality-social accountability-health and safety integrated management system audit to match to the requirements of BSCI and SEDEX.

  18. A saúde da mulher em situação de violência: representações e decisões de gestores/as municipais do Sistema Único de Saúde Women's health in violent situations: municipal administrative roles and decision-making in the Brazilian public health system

    Directory of Open Access Journals (Sweden)

    Madge Porto

    2003-01-01

    Full Text Available Este estudo tem como objetivo investigar as representações de gestores/as sobre a saúde da mulher em situação de violência e a influência dessas representações nas decisões por ações de saúde para essas mulheres. Trata-se de um estudo qualitativo e descritivo, do qual participaram 18 gestores/as de três municípios em Gestão Plena do SUS da Região Metropolitana do Recife (Pernambuco, Brasil. Esses gestores/as foram acomodados em três grupos distintos, com base na semelhança de suas falas sobre a mulher em situação de violência e as ações em saúde para essas mulheres. Entretanto, esses três grupos convergem no que se refere às representações que determinam as decisões por ações em saúde para essas mulheres: o compromisso da gestão com o movimento feminista. Este compromisso aparece como o fator mais relevante e argumentos comuns entre gestores/as da saúde como: problema de saúde pública e qualidade de vida, ou mais tecnicamente, a questão de custo-benefício, não são destacados.The aim of this study was to investigate the role of health management staff concerning the health of women facing violent situations and the impact these roles have on decisions concerning health measures targeting these women. The study employed a qualitative, descriptive methodology including 18 health management staff members from three municipalities classified as having fully autonomous municipal management systems under the Unified National Health System (SUS in Greater Metropolitan Recife, Pernambuco State, Brazil. Staff members were divided into three distinct groups according to their opinions on women in violent situations and women's health interventions. However, the three groups were convergent with respect to their roles in determining decisions on health actions for these women. The health management staff's commitment to the feminist movement proved to be the most relevant factor. Common issues among staff members

  19. Uma metodologia de avaliação do desempenho do sistema de saúde brasileiro A methodology for assessing the performance of the Brazilian health system

    Directory of Open Access Journals (Sweden)

    Francisco Viacava

    2004-09-01

    Full Text Available Este artigo é uma síntese de alguns dos principais resultados das discussões realizadas ao longo de 18 meses entre pesquisadores de diversas instituições, afiliadas à Abrasco, e procura contribuir para a formulação de uma metodologia que permita: a compreender quais são e como se inter-relacionam os fatores que influenciam a eficiência, a efetividade e a eqüidade no desempenho do SUS; b melhorar a formulação de políticas e c monitorar as desigualdades no acesso e na qualidade dos serviços recebidos pelos diferentes grupos sociais no Brasil. A metodologia desenvolvida nutre-se de elementos utilizados nas propostas de avaliação de desempenho dos sistemas de saúde canadense, australiano, inglês e a da OPS e tem o formato de um painel de controle (dashboard, onde podem ser visualizadas simultaneamente diferentes dimensões da avaliação. O artigo descreve a experiência na adaptação e desenvolvimento da metodologia e fornece sugestões no sentido de aplicá-la para melhorar a formulação da política de saúde no Brasil.This paper is the result of a Brazilian multidisciplinary public health working group and consists of a methodology developed to: a identify the factors that influence the efficiency, effectiveness, and equity of the Brazilian public health system and understand how these factors function; b improve the formulation of health policies; and c monitor inequalities in access to and quality of health services among different population groups in Brazil. The methodology developed here is based on Australian and Canadian and PAHO proposals that use a "dashboard" approach, allowing one to examine and evaluate simultaneously multiple dimensions of health system performance. This article describes the experience of adapting and developing the methodology and provides suggestions on how such a system might be employed to improve health policy-making in Brazil.

  20. System identification of two-dimensional continuous-time systems using wavelets as modulating functions.

    Science.gov (United States)

    Sadabadi, Mahdiye Sadat; Shafiee, Masoud; Karrari, Mehdi

    2008-07-01

    In this paper, parameter identification of two-dimensional continuous-time systems via two-dimensional modulating functions is proposed. In the proposed method, trigonometric functions and sine-cosine wavelets are used as modulating functions. By this, a partial differential equation on the finite-time intervals is converted into an algebraic equation linear in parameters. The parameters of the system can then be estimated using the least square algorithms. The underlying computations utilize a two-dimensional fast Fourier transform algorithm, without the need for estimating the unknown initial or boundary conditions, at the beginning of each finite-time interval. Numerical simulations are presented to show the effectiveness of the proposed algorithm.

  1. Trabalho, saúde e gênero: estudo comparativo sobre analistas de sistemas Work and health: a gender study on systems analysts

    Directory of Open Access Journals (Sweden)

    Lys Esther Rocha

    2001-12-01

    Full Text Available OBJETIVO: Avaliar as repercussões do trabalho de mulheres e homens analistas de sistemas na saúde. MÉTODOS: Trata-se de estudo exploratório de delineamento transversal, abrangendo 553 analistas de duas empresas de processamento de dados da região metropolitana de São Paulo. Foram realizadas análises ergonômicas do trabalho, entrevistas semi-estruturadas e preenchimento de questionários para auto-aplicação. A análise dos dados baseou-se em tabelas de contingência com qui-quadrado a 5% de significância e razões de prevalência e seus intervalos de confiança segundo gênero. RESULTADOS: As mulheres constituíram 40,7% do grupo estudado, sendo mais jovens que os homens. A presença de filhos foi maior entre os homens, embora o tempo diário dedicado às tarefas domésticas tenha sido maior entre as mulheres. Observou-se predomínio dos homens nas funções de chefia. Fatores de incômodo, com freqüência semelhante entre homens e mulheres, foram: sobrecarga de trabalho devido a prazos curtos; alto grau de responsabilidade; exigência mental do trabalho; e complexidade da tarefa. Fatores de incômodo predominantes em mulheres foram: postura desconfortável; maior exposição ao computador; e presença de equipamento obsoleto. As mulheres relataram maior freqüência de sintomas visuais, musculares e relacionados a estresse; maior insatisfação com o trabalho; maior fadiga física e mental. CONCLUSÕES: O estudo sugere que as repercussões na saúde das analistas de sistemas estão associadas às exigências do trabalho e ao papel da mulher na sociedade. Os resultados destacam a importância de estudos sobre saúde, trabalho e gênero, em analisar a interseção entre a esfera produtiva e a doméstica.OBJECTIVE: To assess the health impact of working conditions among male and female systems analysts. METHODS: In this cross-sectional study, 533 systems analysts of two data analysis companies located in the metropolitan area of S

  2. Avaliação da assistência ao paciente asmático no Sistema Único de Saúde Evaluation of the treatment provided to patients with asthma by the Brazilian Unified Health Care System

    Directory of Open Access Journals (Sweden)

    Carla Discacciati Silveira

    2009-07-01

    Full Text Available OBJETIVO: Verificar a adequação da assistência médica prestada a pacientes asmáticos do Sistema Único de Saúde de acordo com diretrizes internacionais para o manejo da asma. MÉTODOS: Estudo transversal, incluindo pacientes com suspeita de asma e encaminhados para o Serviço de Pneumologia do Hospital das Clínicas da Universidade Federal de Minas Gerais entre novembro de 2006 e outubro de 2007. RESULTADOS: Foram incluídos 102 pacientes, e 70 confirmados como asmáticos. A assistência médica anterior foi considerada adequada em 18,6% dos pacientes; 50,0% dos asmáticos já haviam realizado espirometria previamente e 34,3%, manobra de PFE. A medicação mais utilizada foi o β2-agonista de curta duração (90,3%. CONCLUSÕES: Os resultados indicam que o manejo de pacientes asmáticos pela maioria dos médicos não-especialistas do sistema público de saúde está em desacordo com as diretrizes, sendo necessários programas de educação médica continuada, priorizando o nível de atenção primária.OBJECTIVE: To determine, based on international guidelines for asthma management, the appropriateness of the treatment that the Unified Health Care System provides to patients with asthma. METHODS: This was a cross-sectional study involving patients suspected of having asthma and referred to the Pulmonology Clinic of the Federal University of Minas Gerais Hospital das Clínicas, Brazil, between November of 2006 and October of 2007. RESULTS: A total of 102 patients were included, and 70 were diagnosed with asthma. The previous treatment was consistent with the guidelines in 18.6% of the patients; 50.0% of the patients had previously been submitted to spirometry, and 34.3% had previously been submitted to PEF. The most frequently prescribed medication was short-acting β2 agonists (90.3%. CONCLUSIONS: The results show that the majority of non-specialized physicians working within the public health care system do not manage the treatment of

  3. Environmental management system implantation and certification in E and P activities: the Perez Companc S.A. experience, Argentina; Implementacion y certificacion de sistemas de gestion ambiental en actividades de E y P: la experiencia de Perez Companc S.A.

    Energy Technology Data Exchange (ETDEWEB)

    Levin, M.; Fasano, Jorge [Perez Companc S.A., Buenos Aires (Argentina)

    1998-07-01

    This work describes the programme and activities for the implementation of Environmental Management Systems in three E and P oil fields operated by Perez Companc S.A. in Argentina. This programme started on June 1995 and the Certificates, for both BS 7750 and ISO 14001 Standards, were obtained on February 1997. The whole implementation process was divided in four main steps, and main activities within each one is described. Manager's commitment and intensive training are seen as fundamental aspects to guarantee the development of the Systems. Main documentation, relates to Environmental Impacts Record, Applicable Legislation Record, System and Operational Control Procedures, Environmental Management Manual and Contingency Plans. (author)

  4. Long distance high power optical laser fiber break detection and continuity monitoring systems and methods

    Energy Technology Data Exchange (ETDEWEB)

    Rinzler, Charles C.; Gray, William C.; Faircloth, Brian O.; Zediker, Mark S.

    2016-02-23

    A monitoring and detection system for use on high power laser systems, long distance high power laser systems and tools for performing high power laser operations. In particular, the monitoring and detection systems provide break detection and continuity protection for performing high power laser operations on, and in, remote and difficult to access locations.

  5. Chaotification of polynomial continuous-time systems and rational normal forms

    Energy Technology Data Exchange (ETDEWEB)

    Starkov, Konstantin E-mail: konst@citedi.mxkonstarkov@hotmail.com; Chen Guanrong E-mail: eegchen@cityu.edu.hk

    2004-11-01

    In this paper we study the chaotification problem of polynomial continuous-time systems in a semiglobal setting. Our results are based on the computation of rational normal forms and time-delay anticontroller design. As examples, the Roessler system, some Sprott systems and the Lorenz system are considered.

  6. Long distance high power optical laser fiber break detection and continuity monitoring systems and methods

    Energy Technology Data Exchange (ETDEWEB)

    Rinzler, Charles C.; Gray, William C.; Faircloth, Brian O.; Zediker, Mark S.

    2016-02-23

    A monitoring and detection system for use on high power laser systems, long distance high power laser systems and tools for performing high power laser operations. In particular, the monitoring and detection systems provide break detection and continuity protection for performing high power laser operations on, and in, remote and difficult to access locations.

  7. A continuous-flow ATP amplification system for increasing the sensitivity of quantitative bioluminescence assay

    OpenAIRE

    Satoh, Tetsuya; Shinoda, Yasuharu; Alexandrov, Maxym; Kuroda, Akio; Murakami, Yuji

    2008-01-01

    We constructed a novel ATP amplification reactor using a continuous-flow system, and this allowed us to increase the sensitivity of quantitative bioluminescence assay by controlling the number of ATP amplification cycles. We previously developed a bioluminescence assay coupled with ATP amplification using a batch system. However, it was difficult to control the number of amplification cycles. In this study, ATP amplification was performed using a continuous-flow system, and significant linear...

  8. Continuous limits for an integrable coupling system of Toda equation hierarchy

    Energy Technology Data Exchange (ETDEWEB)

    Li Li [College of Maths and Systematic Science, Shenyang Normal University, Shenyang 110034 (China); Yu Fajun, E-mail: yfajun@163.co [College of Maths and Systematic Science, Shenyang Normal University, Shenyang 110034 (China)

    2009-09-21

    In this Letter, we present an integrable coupling system of lattice hierarchy and its continuous limits by using of Lie algebra sl(4). By introducing a complex discrete spectral problem, the integrable coupling system of Toda lattice hierarchy is derived. It is shown that a new complex lattice spectral problem converges to the integrable couplings of discrete soliton equation hierarchy, which has the integrable coupling system of C-KdV hierarchy as a new kind of continuous limit.

  9. Modelovanje određenih elemenata digitalnih atlasnih karata sa aspekta geografskih informacionih sistema/Modeling certain digital atlas map elements from the geographical information systems aspect

    Directory of Open Access Journals (Sweden)

    Nikola S. Stamenković

    2014-10-01

    Full Text Available Atlasi i GIS važni su elementi prikaza modela životnog prostora. U radu je predstavljen model upotrebe GIS tehnologije u izradi određenih elemenata atlasnih karata. To podrazumeva definisanje osnovnih matematičkih elemenata karata digitalnog atlasa i mogućih struktura i formi baza prostornih podataka. Geografski elementi atlasnih karata, pretprocesiranje u GIS i strukturiranje karata digitalnog atlasa podržano GIS-om čine osnovne teme rada. Naglašava se mesto GIS tehnologije u procesu izrade atlasnih karata sa dva aspekta. Jedan aspekt predstavlja okvir geografskih informacionih sistema i mogućnosti koje pružaju, a drugi aspekt predstavljaju kartografske metode, odnosno sistem kartografskih metoda u čijem okruženju se izrađuju atlasne karte. / Besides geographic maps, atlases represent the most important cartographic models of environment. Nowadays, contemporary geographic information systems (GISare increasingly used ' in planning, designing and predicting the conditions and processes of complex dynamic spatial systems. Collecting data and information for a specific geographical map and GIS represents its basis.

  10. 77 FR 13977 - Quality Assurance Requirements for Continuous Opacity Monitoring Systems at Stationary Sources

    Science.gov (United States)

    2012-03-08

    ... AGENCY 40 CFR Part 60 RIN 2060-AH23 Quality Assurance Requirements for Continuous Opacity Monitoring... final rule titled, ``Quality Assurance Requirements for Continuous Opacity Monitoring Systems at... electronically in www.regulations.gov or in hard copy at the Procedure 3--Quality Assurance Requirements for...

  11. 77 FR 8160 - Quality Assurance Requirements for Continuous Opacity Monitoring Systems at Stationary Sources

    Science.gov (United States)

    2012-02-14

    ... AGENCY 40 CFR Part 60 RIN 2060-AH23 Quality Assurance Requirements for Continuous Opacity Monitoring...--Quality Assurance Requirements for Continuous Opacity Monitoring Systems at Stationary Sources Docket, EPA.... Rules establishing quality assurance requirements impose no costs independent from national emission...

  12. Antecedents of Continued Usage Intentions of Web-Based Learning Management System in Tanzania

    Science.gov (United States)

    Lwoga, Edda Tandi; Komba, Mercy

    2015-01-01

    Purpose: The purpose of this paper is to examine factors that predict students' continued usage intention of web-based learning management systems (LMS) in Tanzania, with a specific focus on the School of Business of Mzumbe University. Specifically, the study investigated major predictors of actual usage and continued usage intentions of…

  13. Continuous Improvement in the Industrial and Management Systems Engineering Programme at Kuwait University

    Science.gov (United States)

    Aldowaisan, Tariq; Allahverdi, Ali

    2016-01-01

    This paper describes the process employed by the Industrial and Management Systems Engineering programme at Kuwait University to continuously improve the programme. Using a continuous improvement framework, the paper demonstrates how various qualitative and quantitative analyses methods, such as hypothesis testing and control charts, have been…

  14. Antecedents of Continued Usage Intentions of Web-Based Learning Management System in Tanzania

    Science.gov (United States)

    Lwoga, Edda Tandi; Komba, Mercy

    2015-01-01

    Purpose: The purpose of this paper is to examine factors that predict students' continued usage intention of web-based learning management systems (LMS) in Tanzania, with a specific focus on the School of Business of Mzumbe University. Specifically, the study investigated major predictors of actual usage and continued usage intentions of…

  15. Modelling and real-time simulation of continuous-discrete systems in mechatronics

    Energy Technology Data Exchange (ETDEWEB)

    Lindow, H. [Rostocker, Magdeburg (Germany)

    1996-12-31

    This work presents a methodology for simulation and modelling of systems with continuous - discrete dynamics. It derives hybrid discrete event models from Lagrange`s equations of motion. This method combines continuous mechanical, electrical and thermodynamical submodels on one hand with discrete event models an the other hand into a hybrid discrete event model. This straight forward software development avoids numeric overhead.

  16. Continuous Improvement in the Industrial and Management Systems Engineering Programme at Kuwait University

    Science.gov (United States)

    Aldowaisan, Tariq; Allahverdi, Ali

    2016-01-01

    This paper describes the process employed by the Industrial and Management Systems Engineering programme at Kuwait University to continuously improve the programme. Using a continuous improvement framework, the paper demonstrates how various qualitative and quantitative analyses methods, such as hypothesis testing and control charts, have been…

  17. 76 FR 70075 - Proximity Detection Systems for Continuous Mining Machines in Underground Coal Mines

    Science.gov (United States)

    2011-11-10

    ... Mining Machines in Underground Coal Mines AGENCY: Mine Safety and Health Administration, Labor. ACTION... addressing Proximity Detection Systems for Continuous Mining Machines in Underground Coal Mines. This... Continuous Mining Machines in Underground Coal Mines. MSHA conducted hearings on October 18, October...

  18. Reproducibility and reliability of hypoglycaemic episodes recorded with Continuous Glucose Monitoring System (CGMS) in daily life

    DEFF Research Database (Denmark)

    Høi-Hansen, T; Pedersen-Bjergaard, U; Thorsteinsson, B

    2005-01-01

    AIM: Continuous glucose monitoring may reveal episodes of unrecognized hypoglycaemia. We evaluated reproducibility and reliability of hypoglycaemic episodes recorded in daily life by the Medtronic MiniMed Continuous Glucose Monitoring System (CGMS). METHODS: Twenty-nine adult patients with Type 1...

  19. Shake it easy: a gently mixed continuous culture system for dinoflagellates

    NARCIS (Netherlands)

    Van de Waal, D.B.; Eberlein, T.; Bublitz, Y.; John, U.; Rost, B.

    2014-01-01

    An important requirement for continuous cultures is a homogeneous distribution of resources and microorganisms, often achieved by rigorous mixing. Many dinoflagellate species are known to be vulnerable to turbulence. Here, we present a newly developed continuous culture system based on gentle mixing

  20. Evaluation of an Audience Response System for the Continuing Education of Health Professionals

    Science.gov (United States)

    Miller, Redonda G.; Ashar, Bimal H.; Getz, Kelly J.

    2003-01-01

    Introduction: Continuing medical education (CME) for physicians and other health personnel is becoming increasingly important in light of recertification requirements. Interactive learning is more effective and may be useful in a continuing education setting. This study examines the use of an audience response system (ARS) as an interactive…

  1. eSIP-Saúde: Mozambique's novel approach for a sustainable human resources for health information system.

    Science.gov (United States)

    Waters, Keith P; Mazivila, Moises Ernesto; Dgedge, Martinho; Necochea, Edgar; Manharlal, Devan; Zuber, Alexandra; de Faria Leão, Beatriz; Bossemeyer, Debora; Vergara, Alfredo E

    2016-11-05

    Over the past decade, governments and international partners have responded to calls for health workforce data with ambitious investments in human resources information systems (HRIS). However, documentation of country experiences in the use of HRIS to improve strategic planning and management has been lacking. The purpose of this case presentation is to document for the first time Mozambique's novel approach to HRIS, sharing key success factors and contributing to the scant global knowledge base on HRIS. Core components of the system are a Government of Mozambique (GOM) registry covering all workers in the GOM payroll and a "health extension" which adds health-sector-specific data to the GOM registry. Separate databases for pre-service and in-service training are integrated through a business intelligence tool. The first aim of the HRIS was to identify the following: who and where are Mozambique's health workers? As of July 2015, 95 % of countrywide health workforce deployment information was populated in the HRIS, allowing the identification of health professionals' physical working location and their pay point. HRIS data are also used to quantify chronic issues affecting the Ministry of Health (MOH) health workforce. Examples include the following: HRIS information was used to examine the deployment of nurses trained in antiretroviral therapy (ART) vis-à-vis the health facilities where ART is being provided. Such results help the MOH align specialized skill sets with service provision. Twenty-five percent of the MOH health workforce had passed the 2-year probation period but had not been updated in the MOH information systems. For future monitoring of employee status, the MOH established a system of alerts in semi-monthly reports. As of August 2014, 1046 health workers were receiving their full salary but no longer working at the facilities. The MOH is now analyzing this situation to improve the retirement process and coordination with Social Security. The

  2. Effect of surfactant-induced cell surface modifications on electron transport system and catechol 1,2-dioxygenase activities and phenanthrene biodegradation by Citrobacter sp. SA01.

    Science.gov (United States)

    Li, Feng; Zhu, Lizhong

    2012-11-01

    In order to better understand how surfactants affect biodegradation of hydrophobic organic compounds (HOCs), Tween 80 and sodium dodecyl benzene sulfonate (SDBS), were selected to investigate effects on cell surface hydrophobicity (CSH), electron transport system (ETS) activities and phenanthrene biodegradation by Citrobacter sp. SA01. Tween 80 and SDBS increased CSH by 19.8-25.2%, ETS activities by 352.1-376.0μmol/gmin, catechol 1,2-dioxygenase (C12) activities by 50.8-52.7U/L, and phenanthrene biodegradation by 8.9-17.2% separately in the presence of 50mg/L of surfactants as compared to in their absence. Lipopolysaccharide (LPS) release was 334.7μg/mg in the presence of both surfactants whereas in their absence only 8.6-44.4μg/mg of LPS was released. Thus, enhanced LPS release probably increased ETS and C12 activities as well as phenanthrene biodegradation by increasing CSH. The results demonstrate that surfactant-enhanced CSH provides a simple, yet effective strategy for field applications of surfactant-enhanced bioremediation of HOCs.

  3. Preceptoria de território, novas práticas e saberes na estratégia de educação permanente em saúde da família: o estudo do caso de Sobral, CE Preceptorship of territory, new practices and knowledge in the strategy of continuing education in family health strategy: the case study of Sobral, Ceara, Brazil

    Directory of Open Access Journals (Sweden)

    Rosani Pagani

    2012-05-01

    Full Text Available O presente trabalho pretende apresentar um novo ator no Sistema Único de Saúde - o preceptor de território - bem como discutir sua atuação. Com a implantação da Estratégia Saúde da Família, bastante se tem discutido sobre o desafio de formar profissionais para atuarem neste modelo através de educação permanente em saúde. Nesse processo, o município de Sobral, CE, criou em 1999 a residência multiprofissional e a preceptoria de território; em 2001, a Escola de Formação em Saúde da Família Visconde de Sabóia. Este estudo teve como objetivos analisar a implantação e a atuação da preceptoria de território, descrevendo o processo de trabalho dos preceptores e identificando suas competências; além disso, descreveu-se o processo de educação permanente desenvolvido na Estratégia de Saúde da Família em Sobral. Utilizou-se uma abordagem qualitativa do tipo estudo de caso, com os seguintes instrumentos: entrevistas, questionários e grupo focal. Para a organização os dados foram analisados através da técnica do Discurso do Sujeito Coletivo (DSC. Entre os achados do estudo, identifica-se o preceptor de território como um profissional que atua diretamente com os residentes nos territórios das equipes da estratégia de saúde da família, destacando-se por suas amplas competências. Entre estas, podem ser mencionados conhecimentos conceituais nos campos da saúde coletiva e das relações humanas, bem como conhecimento e desenvoltura na utilização de métodos de ensino (problematização, educação permanente em saúde e educação popular. Deve também ser capaz de desenvolver relações harmônicas e de participação. O debate vem auxiliando o preceptor de território de Sobral a estabelecer seu papel e consolidar sua função de educador na construção do SUS.This paper aims to present a new actor in the Health's Unique System of Brazil (SUS, the preceptor of territory, and discuss his performance. The

  4. Continuous-flow ATP amplification system for increasing the sensitivity of quantitative bioluminescence assay.

    Science.gov (United States)

    Satoh, Tetsuya; Shinoda, Yasuharu; Alexandrov, Maxym; Kuroda, Akio; Murakami, Yuji

    2008-08-01

    We constructed a novel ATP amplification reactor using a continuous-flow system, and this allowed us to increase the sensitivity of a quantitative bioluminescence assay by controlling the number of ATP amplification cycles. We previously developed a bioluminescence assay coupled with ATP amplification using a batch system. However, it was difficult to control the number of amplification cycles. In this study, ATP amplification was performed using a continuous-flow system, and significant linear correlations between amplified luminescence and initial ATP concentration were observed. When performing four cycles of continuous-flow ATP amplification, the gradient of amplification was 1.87(N). Whereas the lower quantifiable level was 500 pM without amplification, values as low as 50 pM ATP could be measured after amplification. The sensitivity thus increased 10-fold, with further improvements expected with additional amplification cycles. The continuous-flow system thus effectively increased the sensitivity of the quantitative bioluminescence assay.

  5. Local Existence and Continuation Criterion for Solutions of the Spherically Symmetric Einstein-Vlasov-Maxwell System

    CERN Document Server

    Noundjeu, P

    2003-01-01

    Using the iterative Scheme we prove the local existence and uniqueness of solutions of the spherically symmetric Einstein-Vlasov-Maxwell system with small initial data. We prove a continuation criterion to global in-time solutions.

  6. Inactivation of L. fructivorans in Sake Using a Continuous Flow System for High-Pressure Carbonation

    National Research Council Canada - National Science Library

    TANIMOTO, Shota; MATSUMOTO, Hideyuki; FUJII, Kazuyoshi; OHDOI, Ritsushi; SAKAMOTO, Koji; YAMANE, Yuichi; MIYAKE, Masaki; SHIMODA, Mitsuya; OSAJIMA, Yutaka

    2007-01-01

    ...) quality, was investigated using a continuous flow system for high-pressure carbonation. In addition, the effects of ethanol and sugar concentration on lactic acid bacteria inactivation were investigated. Cells of L. fructivorans (1×106CFU/ml...

  7. Development of continuous pharmaceutical production processes supported by process systems engineering methods and tools

    DEFF Research Database (Denmark)

    Gernaey, Krist; Cervera Padrell, Albert Emili; Woodley, John

    2012-01-01

    The pharmaceutical industry is undergoing a radical transition towards continuous production processes. Systematic use of process systems engineering (PSE) methods and tools form the key to achieve this transition in a structured and efficient way....

  8. Behaviour of marine oil-degrading bacterial populations in a continuous culture system

    Digital Repository Service at National Institute of Oceanography (India)

    Mohandass, C.; David, J.J.; Nair, S.; LokaBharathi, P.A.; Chandramohan, D.

    In pursuit of developing an oil-degrading microbial consortium, we used the principle of "plasmid assisted molecular breeding" (PAMB) in a continuous culture system. Three marine bacteria, Pseudomonas putida, Brevibacterium epidermidis...

  9. 76 FR 54163 - Proximity Detection Systems for Continuous Mining Machines in Underground Coal Mines

    Science.gov (United States)

    2011-08-31

    ... full width of an entry. A commenter on the RFI stated that current proximity detection system designs... coal or rock. Some current proximity detection systems on continuous mining machines are installed to stop machine tram movement and the conveyor swing function when the system is activated while...

  10. DSamala toolbox software for analysing and simulating discrete, continuous, stochastic dynamic systems

    Directory of Open Access Journals (Sweden)

    Angelica María Atehortúa Labrador

    2012-09-01

    Full Text Available This article describes DSamala toolbox, a computational tool for simulating and analysing discrete, continuous, stochastic dynamic systems; It is presented as a MATLAB toolbox. DSamala toolbox makes a significant contribution to studying dynamic systems through the use of information and communication technology (ICT, especially when equations modelling these systems are difficult or impossible to solve analytically.

  11. Critical behaviour of irreversible reaction systems[98.70.Sa Cosmic rays (including sources, origin, acceleration, and interactions);

    Energy Technology Data Exchange (ETDEWEB)

    Loscar, Ernesto; Albano, Ezequiel V [Instituto de Investigaciones Fisicoquimicas Teoricas y Aplicadas (INIFTA), Sucursal 4, Casilla de Correo 16. (1900) La Plata (Argentina)

    2003-08-01

    An introductory review on the critical behaviour of some irreversible reaction systems is presented. The study of these systems has attracted great attention during the last decades due to, on the one hand, the rich and complex underlying physics, and, on the other, their relevance to numerous technological applications in heterogeneous catalysis, corrosion and coating, development of microelectronic devices, etc. The review focuses on recent advances in the understanding of irreversible phase transitions (IPTs), providing a survey of the theoretical development in the field during the last decade, as well as a detailed discussion of relevant numerical simulations. The Langevin formulation for the treatment of second-order IPTs is discussed. Different Monte Carlo (MC) approaches are also presented in detail and the finite-size-scaling analysis of second-order IPT's is described. Special attention is devoted to the description of the recent progress in the study of first-order IPTs observed upon catalytic oxidation of carbon monoxide and the reduction of nitrogen monoxide, using lattice gas reaction models. Only brief comments are given on other reactions such as the oxidation of hydrogen, ammonia synthesis. Also, a discussion of relevant experiments is presented and measurements are compared with the numerical results. Furthermore, promising areas for further research and open questions are also addressed.

  12. North America and South America (NA-SA) neuropathy project.

    Science.gov (United States)

    Pasnoor, Mamatha; Nascimento, Osvaldo J M; Trivedi, Jaya; Wolfe, Gil I; Nations, Sharon; Herbelin, Laura; de Freitas, M G; Quintanilha, Giseli; Khan, Saud; Dimachkie, Mazen; Barohn, Richard

    2013-08-01

    Peripheral neuropathy is a common neurological disorder. There may be important differences and similarities in the diagnosis of peripheral neuropathy between North America (NA) and South America (SA). Neuromuscular databases were searched for neuropathy diagnosis at two North American sites, University of Kansas Medical Center and University of Texas Southwestern Medical Center, and one South American site, Federal Fluminense University in Brazil. All patients were included into one of the six major categories: immune-mediated, diabetic, hereditary, infectious/inflammatory, systemic/metabolic/toxic (not diabetic) and cryptogenic. A comparison of the number of patients in each category was made between North America and South America databases. Total number of cases in North America was 1090 and in South America was 1034 [immune-mediated: NA 215 (19.7%), SA 191 (18%); diabetic: NA 148 (13.5%), SA 236 (23%); hereditary: NA 292 (26.7%), SA 103 (10%); infectious/inflammatory: NA 53 (4.8%), SA 141 (14%); systemic/metabolic/toxic: NA 71 (6.5%), SA 124 (12%); cryptogenic: NA 311 (28.5%), SA 239 (23%)]. Some specific neuropathy comparisons were hereditary neuropathies [Charcot-Marie-Tooth (CMT) cases] in NA 246/292 (84.2%) and SA 60/103 (58%); familial amyloid neuropathy in SA 31/103 (30%) and none in NA. Among infectious neuropathies, cases of human T-lymphotropic virus type 1 (HTLV-1) neuropathy in SA were 36/141(25%), Chagas disease in SA were 13/141(9%) and none for either in NA; cases of neuropathy due to leprosy in NA were 26/53 (49%) and in SA were 39/141(28%). South American tertiary care centers are more likely to see patients with infectious, diabetic and hereditary disorders such as familial amyloid neuropathies. North American tertiary centers are more likely to see patients with CMT. Immune neuropathies and cryptogenic neuropathies were seen equally in North America and South America.

  13. Backstepping Adaptive Controller of Electro-Hydraulic Servo System of Continuous Rotary Motor

    Institute of Scientific and Technical Information of China (English)

    XiaoJing Wang; ChangFu Xian; CaoLei Wan; JinBao Zhao; LiWei Xiu; AnCai Yu

    2014-01-01

    In order to consider the influence of the continuous rotary motor electro-hydraulic servo system parameters change on its performance, the design method of backstepping adaptive controller is put forward. The mathematical model of electro-hydraulic servo system of continuous rotary motor is established, and the whole system is decomposed into several lower order subsystems, and the virtual control signal is designed for each subsystem from the final subsystem with motor angular displacement to the subsystem with system control input voltage. Based on Lyapunov method and the backstepping theory, an adaptive backstepping controller is designed with the changed parameters adaptive law. It is proved that the system reaches the global asymptotic stability, and the system tracking error asymptotically tends to zero. The simulation results show that the backstepping adaptive controller based on the adaptive law of the changed parameters can improve the performance of continuous rotary motor, and the proposed control strategy is feasible.

  14. Continuous wave terahertz spectroscopy system with stably tunable beat source using optical switch

    Science.gov (United States)

    Eom, Joo Beom; Kim, Chihoon; Ahn, Jaesung

    2017-01-01

    A tunable beat source has been made using an optical switch module. A stably-tunable beat source for continuous wave terahertz spectroscopy system was implemented by simply connecting 16 coaxial distributed feedback laser diodes to an optical switch. The terahertz frequency was rapidly changed without frequency drifts by changing the optical path. The continuous wave terahertz frequency was tuned from 0.05 to 0.8 THz in steps of 50 GHz or 0.4 nm. We measured continuous wave terahertz waveforms emitted from the photomixers using the switched optical beat source. We also calculated the terahertz frequency peaks by taking fast Fourier transforms of the measured terahertz waveforms. By equipping the implemented tunable beat source with an optical switch, a continuous wave terahertz spectroscopy system was constructed and used to demonstrate the feasibility of continuous wave terahertz spectroscopy for nondestructive tests using the spectra of two type of Si wafers with different resistivity.

  15. Continuity in weak topology:higher order linear systems of ODE

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    We will introduce a type of Fredholm operators which are shown to have a certain con- tinuity in weak topologies.From this,we will prove that the fundamental matrix solutions of k-th, k≥2,order linear systems of ordinary differential equations are continuous in coefficient matrixes with weak topologies.Consequently,Floquet multipliers and Lyapunov exponents for periodic systems are continuous in weak topologies.Moreover,for the scalar Hill’s equations,Sturm-Liouville eigenvalues, periodic and anti-periodic eigenvalues,and rotation numbers are all continuous in potentials with weak topologies.These results will lead to many interesting variational problems.

  16. THEORETICAL AND EXPERIMENTAL STUDY ON THE PRESSURE AND VACUUM CONTINUOUS CONTROL SYSTEM BASED ON HYBRID PUMP

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    A novel pressure and vacuum continuous control system, which adopts a hybrid pump as pressure and vacuum source, is presented. The mathematical model of the system is developed. The theoretical simulation and analysis on the system are implemented in order to study the relationships among the characteristics, parameters and working points of the system. The experimental investigations on the system characteristics are presented with the adoption of a fuzzy-PID controller. The simulation and experimental results indicate that the pressure and vacuum continuous control system based on hybrid pump has good dynamic and static performance, strong robustness and satisfactory adaptability to various system parameters. According to the results, system can successfully gain high accuracy and fast response signal. Also, the mathematical model of system is also testified by the experimental results.

  17. Continued Development of the Rapid Cycle Amine (RCA) System for Advanced Extravehicular Activity Systems

    Science.gov (United States)

    Papale, William; Chullen, Cinda; Campbell, Colin; Conger, Bruce; McMillin, Summer; Jeng, Frank

    2014-01-01

    Development activities related to the Rapid Cycle Amine (RCA) Carbon Dioxide (CO2) and Humidity control system have progressed to the point of integrating the RCA into an advanced Primary Life Support System (PLSS 2.0) to evaluate the interaction of the RCA among other PLSS components in a ground test environment. The RCA 2.0 assembly (integrated into PLSS 2.0) consists of a valve assembly with commercial actuator motor, a sorbent canister, and a field-programmable gate array (FPGA)-based process node controller. Continued design and development activities for RCA 3.0 have been aimed at optimizing the canister size and incorporating greater fidelity in the valve actuator motor and valve position feedback design. Further, the RCA process node controller is envisioned to incorporate a higher degree of functionality to support a distributed PLSS control architecture. This paper will describe the progression of technology readiness levels of RCA 1.0, 2.0 and 3.0 along with a review of the design and manufacturing successes and challenges for 2.0 and 3.0 units. The anticipated interfaces and interactions with the PLSS 2.0/2.5/3.0 assemblies will also be discussed.

  18. Continuous rotary motor electro-hydraulic servo system based on the improved repetitive controller

    Institute of Scientific and Technical Information of China (English)

    WANG Xiao-jing; JIANG ji-hai; LI Shang-yi

    2010-01-01

    In order to suppress the periodic interference of the continuous rotary electro-hydraulic servo motor,this paper makes the motor tracking the periodic signals with high accuracy,and improves the influence of friction interference to the performance of continuous rotary electro-hydraulic servo motor.The mathematic model of the electro-hydraulic position servo system of the continuous rotary motor was established,and the compound control method was adopted based on the repetitive control,feed forward and PID to suppress the friction interference.Through the simulation,the result confirms that the compound control method decreases the tracking error of the system,increases the robust performance of the system and improves the performance of the continuous rotary electro-hydraulic servo motor.

  19. Prevenção quaternária na atenção primária à saúde: uma necessidade do Sistema Único de Saúde Quaternary prevention in primary care: a necessity for the Brazilian Unified National Health System

    Directory of Open Access Journals (Sweden)

    Armando Henrique Norman

    2009-09-01

    Full Text Available Em 2003, a Organização Mundial de Colégios Nacionais, Academias e Associações Acadêmicas de Médicos gerais/Médicos de Família (WONCA propôs um conceito relativamente pouco discutido que visa proteger os pacientes da intervenção médica desnecessária e prevenir iatrogenias: a prevenção quaternária. Tal conceito tem evidente relevância para a saúde pública e para o Sistema Único de Saúde (SUS, em tempos de intensa medicalização social e expansão da atenção à saúde via Estratégia Saúde da Família. Neste artigo, o conceito de prevenção quaternária é apresentado e contextualizado, e sua relevância é discutida, ressaltando três situações comuns do cuidado médico geradoras de grande iatrogenia: excesso de rastreamento, de solicitação de exames complementares e de medicalização de fatores de risco. Defende-se a necessidade da adoção e discussão deste conceito no SUS e especialmente na atenção primária à saúde.In 2003, the World Organization of National Colleges, Academies, and Academic Associations of General Practitioners/Family Physicians (WONCA proposed a concept (that had previously received relatively little discussion aiming to protect patients from unnecessary medical interventions and to prevent iatrogenicity: quaternary prevention. In times of intense social medicalization, particularly in Brazil due to the expansion of health care through the Family Health Strategy, iatrogenicity has become a highly relevant issue for both public health and the Unified National Health System (SUS. This article presents the concept of quaternary prevention and discusses and frames its relevance in light of three common situations in medical care with potentially iatrogenic results: excessive screening, complementary tests, and medicalization of risk factors. We propose the inclusion and discussion of this concept in the SUS, especially in primary care.

  20. A continuous hyperspatial monitoring system of evapotranspiration and gross primary productivity from Unmanned Aerial Systems

    Science.gov (United States)

    Wang, Sheng; Bandini, Filippo; Jakobsen, Jakob; Zarco-Tejada, Pablo J.; Köppl, Christian Josef; Haugård Olesen, Daniel; Ibrom, Andreas; Bauer-Gottwein, Peter; Garcia, Monica

    2017-04-01

    Unmanned Aerial Systems (UAS) can collect optical and thermal hyperspatial (signatures of the land surface, closely linked with the vegetation structure and functioning, are already part of models to predict Evapotranspiration (ET) and Gross Primary Productivity (GPP) from satellites. However, there remain challenges for an operational monitoring using UAS compared to satellites: the payload capacity of most commercial UAS is less than 2 kg, but miniaturized sensors have low signal to noise ratios and small field of view requires mosaicking hundreds of images and accurate orthorectification. In addition, wind gusts and lower platform stability require appropriate geometric and radiometric corrections. Finally, modeling fluxes on days without images is still an issue for both satellite and UAS applications. This study focuses on designing an operational UAS-based monitoring system including payload design, sensor calibration, based on routine collection of optical and thermal images in a Danish willow field to perform a joint monitoring of ET and GPP dynamics over continuous time at daily time steps. The payload (digital camera (Sony RX-100) used to retrieve accurate digital elevation models (DEMs) for multispectral and thermal image orthorectification, and a standard GNSS single frequency receiver (UBlox) or a real time kinematic double frequency system (Novatel Inc. flexpack6+OEM628). Geometric calibration of the digital and multispectral cameras was conducted to recover intrinsic camera parameters. After geometric calibration, accurate DEMs with vertical errors about 10cm could be retrieved. Radiometric calibration for the multispectral camera was conducted with an integrating sphere (Labsphere CSTM-USS-2000C) and the laboratory calibration showed that the camera measured radiance had a bias within ±4.8%. The thermal camera was calibrated using a black body at varying target and ambient temperatures and resulted in laboratory accuracy with RMSE of 0.95 K. A

  1. Improvement of sensitivity in continuous wave near infra-red spectroscopy systems by using silicon photomultipliers.

    Science.gov (United States)

    Pagano, Roberto; Libertino, Sebania; Sanfilippo, Delfo; Fallica, Giorgio; Lombardo, Salvatore

    2016-04-01

    We experimentally analyze the signal-to-noise ratio of continuous wave (CW) near infrared spectroscopy (NIRS) reflectance systems based on light emitting diodes and silicon photomultipliers for high performance low cost NIRS biomedical systems. We show that under suitable experimental conditions such systems exhibit a high SNR, which allows an SDS of 7 cm, to our knowledge the largest ever demonstrated in a CW-NIRs system.

  2. Event-chain Monte Carlo algorithm for continuous spin systems and its application

    Science.gov (United States)

    Nishikawa, Yoshihiko; Hukushima, Koji

    2016-09-01

    The event-chain Monte Carlo (ECMC) algorithm is described for hard-sphere systems and general potential systems including interacting particle system and continuous spin systems. Using the ECMC algorithm, large-scale equilibrium Monte Carlo simulations are performed for a three-dimensional chiral helimagnetic model under a magnetic field. It is found that critical behavior of a phase transition changes with increasing the magnetic field.

  3. Stability Tests of Positive Fractional Continuous-time Linear Systems with Delays

    Directory of Open Access Journals (Sweden)

    Tadeusz Kaczorek

    2013-06-01

    Full Text Available Necessary and sufficient conditions for the asymptotic stability of positive fractional continuous-time linear systems with many delays are established. It is shown that: 1 the asymptotic stability of the positive fractional system is independent of their delays, 2 the checking of the asymptotic stability of the positive fractional systems with delays can be reduced to checking of the asymptotic stability of positive standard linear systems without delays.

  4. Optimization of Continuous Flow Adsorption of Heavy Metal Ions on Continuous System Column by Peganum Harmala Seeds

    Directory of Open Access Journals (Sweden)

    Elhameh Mohammadpour

    2017-01-01

    Full Text Available Background & Aims of the Study: Heavy metals discharge to environment is a worldwide problem growing in scale. When they accumulate in the environment and in food chains, they can profoundly disrupt biological processes. Peganum Harmala Seeds (PHS was used as a bio-sorbent, using a continuous system for removing Pb2+, Co2+, Ni2+ and Cu2+ ions from aqueous solutions. Materials and Methods: PHS was used as adsorbent in adsorption of heavy metals from aqueous solutions. A stock solution of Pb(II, Co(II, Cu (II and Ni (II was prepared and experiments were down in a column as a reactor. The concentration was determined by atomic adsorption spectroscopy. The effect of various parameters such as pH, contact time, heavy metal concentration, ionic strength, particle size and adsorbent dosage on the process was investigated. Langmuir, Frundlich and Temkin isotherms were studied to evaluate of adsorption isotherms. Results: The adsorption efficiency was found to be pH dependent and enhanced by increasing the solution pH. Maximum removal of ions were obtained at pH=4-8. The equilibrium time was attained after 30 min and desorption studies were performed, using diluted HNO3, H2SO4 and HCl solution (1M on adsorbed metal ions from PHS. Results illustrated that adsorbed metal ions could be recovered under acidic conditions. Investigation of the process kinetic was best fitted with pseudo second-order model. Langmuir, Freundlich and Temkin models were tested for describing the equilibrium data. The Langmuir isotherm illustrated the best description of the cobalt and copper adsorption mechanism and Freundlich model describes lead and nickel ions adsorption on PHS. Conclusion: It was found that PHS would be a good adsorbent for removal of heavy metals.

  5. A High-Resolution Continuous Flow Analysis System for Polar Ice Cores

    DEFF Research Database (Denmark)

    Dallmayr, Remi; Goto-Azuma, Kumiko; Kjær, Helle Astrid;

    2016-01-01

    of Polar Research (NIPR) in Tokyo. The system allows the continuous analysis of stable water isotopes and electrical conductivity, as well as the collection of discrete samples from both inner and outer parts of the core. This CFA system was designed to have sufficiently high temporal resolution to detect......In recent decades, the development of continuous flow analysis (CFA) technology for ice core analysis has enabled greater sample throughput and greater depth resolution compared with the classic discrete sampling technique. We developed the first Japanese CFA system at the National Institute...

  6. Optimizing the optical field distribution of solid immersion lens system by a continuous phase filter

    Institute of Scientific and Technical Information of China (English)

    Xuehua Ye; Yaoju Zhang; Junfeng Chen

    2007-01-01

    In solid immersion lens (SIL) microscopy systems with high numerical aperture (NA), there always exists the aberration produced by Fresnel effects at the interface between SIL and the sample. This aberration may cause the degradation of the image of sample. We design a continuous phase filter and optimize the optical field distribution of SIL system. The numerical results show that when the continuous phase filter is used, the field distribution of SIL system can be optimized, and the focal depth and intensity of transmitted light can be increased. At the same time, the intensity of side-lobe and the resolution are kept almost unchanged.

  7. A High-Resolution Continuous Flow Analysis System for Polar Ice Cores

    DEFF Research Database (Denmark)

    Dallmayr, Remi; Goto-Azuma, Kumiko; Kjær, Helle Astrid

    2016-01-01

    of Polar Research (NIPR) in Tokyo. The system allows the continuous analysis of stable water isotopes and electrical conductivity, as well as the collection of discrete samples from both inner and outer parts of the core. This CFA system was designed to have sufficiently high temporal resolution to detect...... signals of abrupt climate change in deep polar ice cores. To test its performance, we used the system to analyze different climate intervals in ice drilled at the NEEM (North Greenland Eemian Ice Drilling) site, Greenland. The quality of our continuous measurement of stable water isotopes has been...

  8. Chaotic behavior in the dynamical system of a continuous stirred tank reactor

    Science.gov (United States)

    Retzloff, D. G.; Chan, P. C.-H.; Chicone, C.; Offin, D.; Mohamed, R.

    1987-03-01

    The dynamical system describing a continuous stirred tank reactor (CSTR) for the reactions A→B→C and A→C, B→D is considered. A circulating attractor with accompanying circulating orbits is shown to exist when the critical point of the system is unique and unstable. The orbit structure has been numerically found to consist of periodic orbits and chaotic behavior.

  9. A computer-controlled continuous air drying and flask sampling system

    NARCIS (Netherlands)

    Neubert, R.E.M.; Spijkervet, L.L.; Schut, J.K.; Been, H.; Meijer, H.A.J.

    A computer-controlled continuous air drying and flask sampling system has been developed and is discussed here. This system is set up for taking air samples automatically at remote places. Twenty glass flasks can be connected one by one or in pairs, and they can be filled at preset times, after

  10. Numerical continuation methods for dynamical systems path following and boundary value problems

    CERN Document Server

    Krauskopf, Bernd; Galan-Vioque, Jorge

    2007-01-01

    Path following in combination with boundary value problem solvers has emerged as a continuing and strong influence in the development of dynamical systems theory and its application. It is widely acknowledged that the software package AUTO - developed by Eusebius J. Doedel about thirty years ago and further expanded and developed ever since - plays a central role in the brief history of numerical continuation. This book has been compiled on the occasion of Sebius Doedel''s 60th birthday. Bringing together for the first time a large amount of material in a single, accessible source, it is hoped that the book will become the natural entry point for researchers in diverse disciplines who wish to learn what numerical continuation techniques can achieve. The book opens with a foreword by Herbert B. Keller and lecture notes by Sebius Doedel himself that introduce the basic concepts of numerical bifurcation analysis. The other chapters by leading experts discuss continuation for various types of systems and objects ...

  11. Supplement Analysis for the Transmission System Vegetation Management Program FEIS (DOE/EIS-0285/SA-151-Big Eddy-Ostrander 1)

    Energy Technology Data Exchange (ETDEWEB)

    Stratton, Elaine [Bonneville Power Administration (BPA), Portland, OR (United States)

    2003-05-08

    Removal of danger trees along the Big Eddy-Ostrander-1 transmission line corridor. This corridor also includes segments of the Big Eddy-Troutdale, Ostrander-Troutdale, Big Eddy-McLoughlin and Bid Eddy-Chemawa transmission lines. Referencing the Big-Eddy-Ostrander-1 transmission line, the project extends from tower 39/3 to 72/2. The portion of the ROW extending from 39/3 west to 44/5+313 falls within the Zigzag Ranger District of the Mt. Hood National Forest, Clackamas County, Oregon. All work conducted within the Mt. Hood National Forest has been previously addressed in the Supplement Analysis for the Transmission System Vegetation Management Program (DOE/EIS-0285/SA-113-1) dated 12/02/2002 and will conform to the requirements therein. This Supplement Analysis evaluates that portion of the project proposed for the remainder of the transmission line corridor extending from 44/5+313 west to 72/2. BPA proposes to manually remove danger trees located along the indicated transmission line rights-of-ways that are approaching electrical clearance zones defined in accordance with the National Electrical Safety Code and BPA Standards. Manual removal involves chainsaws, brush cutters, or hand tools. BPA would then treat the associated hardwood stumps with herbicides using spot and localized treatments to ensure that the roots are killed and to prevent new sprouts. Spot treatments and localized treatments consist of direct applications of herbicide to an individual target plant or small group of plants using minimal amounts of herbicide. See Section 1.1 of the attached checklist for pertinent information on each section of referenced transmission line included in the proposal.

  12. An Extended Expectation-Confirmation Model for Mobile Nursing Information System Continuance.

    Science.gov (United States)

    Hsieh, Pi-Jung; Lai, Hui-Min; Ma, Chen-Chung; Alexander, Judith W; Lin, Memg-Yi

    2016-11-01

    Nursing is critical in health care systems and comprises the planning, execution, and documentation of nursing care. To better manage health care information during patient care, the use of a mobile nursing information system (MNIS) provides more time to care for inpatients by reducing time-consuming and redundant paperwork. The purpose of this study was to extend the expectation-confirmation model and explore the roles of nursing professional competency (skill in use), habit (customary use), satisfaction (with use), and frequency of prior use in the context of MNIS continuance usage. We randomly chose 3 hospitals from among 14 hospitals in Taiwan that had indicated they used an MNIS. We conducted a field survey of nurses who had experience using the MNIS. We used a valid sample of 90 nurses to test the research model, using structural equation modeling with the partial least squares method. The results show that habit and frequency of prior use had a significant impact on MNIS continuance usage. Satisfaction and frequency of prior use had a significant impact on habit. Nurses' professional competence is crucial to perceived usefulness and, thus, is relevant in the context of MNIS continuance usage. When habit weakens over time, the continuance intention predicts continuance usage. This study showed that the extended expectation-confirmation model effectively predicts nurses' MNIS continuance usage and provides implications. Academics and practitioners should understand how nurses' habits form and how they affect continued MNIS use. Understanding the antecedents of habits can help nursing managers identify and manipulate habit formation.

  13. A Seismic Transmission System for Continuous Monitoring of the Lithosphere: A Proposition

    OpenAIRE

    Unger, R.

    2002-01-01

    The main objective of this thesis is to enhance earthquake prediction feasibility. We present the concept and the design layout of a novel seismic transmission system capable of continuously monitoring the Lithosphere for changes in Earth physics parameters governing seismic wave propagation. New-technology seismic vibrator sources (magnetic levitation vibrator, linear synchronous motor vibrator) transmit, in continuously repeatable fashion, mutually uncorrelated, low-frequency signals simult...

  14. An integrable coupling system of lattice hierarchy and its continuous limits

    Energy Technology Data Exchange (ETDEWEB)

    Yu Fajun [College of Maths and Systematic Science, Shenyang Normal University, Shenyang 110034 (China)], E-mail: yfajun@163.com; Li Li [College of Maths and Systematic Science, Shenyang Normal University, Shenyang 110034 (China)

    2009-04-13

    In [E.G. Fan, Phys. Lett. A 372 (2008) 6368], Fan present a lattice hierarchy and its continuous limits. In this Letter, we extend this method, by introducing a complex discrete spectral problem, a coupling lattice hierarchy is derived. It is shown that a new sequence of combinations of complex lattice spectral problem converges to the integrable coupling couplings of soliton equation hierarchy, which has the integrable coupling system of AKNS hierarchy as a continuous limit.

  15. Bi-Criteria System Optimum Traffic Assignment in Networks With Continuous Value of Time

    Directory of Open Access Journals (Sweden)

    Xin Wang

    2013-04-01

    Full Text Available For an elastic demand transportation network with continuously distributed value of time, the system disutility can be measured either in time units or in cost units. The user equilibrium model and the system optimization model are each formulated in two different criteria. The conditions required for making the system optimum link flow pattern equivalent to the user equilibrium link flow pattern are derived. Furthermore, a bi-objective model has been developed which minimizes simultaneously the system travel time and the system travel cost. The existence of a pricing scheme with anonymous link tolls which can decentralize a Pareto system optimum into the user equilibrium has been investigated.

  16. Chaotic anti-control for the bounded linear continuous-time system

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    With regard to the bounded linear continuous-time system,a universal chaotic anti-controlling method was presented on the basis of tracking control.A tracking controller is designed to such an extent that it can track any chaotic reference input,thus making it possible to chaotify the linear system.The controller is identical in structure for different controlled linear systems.Computer simulations proved the effectiveness of the proposed method.

  17. Specification and simulation of behavior of the Continuous Infusion Insulin Pump system.

    Science.gov (United States)

    Babamir, Seyed Morteza; Dehkordi, Mehdi Borhani

    2014-01-01

    Continuous Infusion Insulin Pump (CIIP) system is responsible for monitoring diabetic blood sugar. In this paper, we aim to specify and simulate the CIIP software behavior. To this end, we first: (1) presented a model consisting of the CIIP system behavior in response to its environment (diabetic) behavior and (2) we formally defined the safety requirements of the system environment (diabetic) in the Z formal modeling language. Such requirements should be satisfied by the CIIP software. Finally, we programmed the model and requirements.

  18. Chaotic anti-control for the bounded linear continuous-time system

    Institute of Scientific and Technical Information of China (English)

    Li Jianfen; Lin Hui; Li Nong

    2008-01-01

    With regard to the bounded linear continuous-time system, a universal chaotic anti-controlling method was presented on the basis of tracking control. A tracking controller is designed to such an extent that it can track any chaotic reference input, thus making it possible to chaotify the linear system. The controller is identical in structure for different controlled linear systems. Computer simulations proved the effectiveness of the proposed method.

  19. Investigation of power flow in a continuous floating raft isolation system

    Institute of Scientific and Technical Information of China (English)

    SONG Kongjie; MAO Yinghong; LIN Li

    2001-01-01

    A general dynamic model of a floating raft isolation system with multiple machines and supports is established. Considering the coupling of the foundation in high frequency and basing on the mobility analysis of substructures, the expression of the power flow transmission spectrum of the finite continuous isolation system of asymmetry is derived. At the same time the mathematical calculation and analysis by figure are made to find the rules related to the isolation effect in the case of different parameters of the system.

  20. Field assessment of surge and continuous furrow irrigation methods in relation to tillage systems

    Science.gov (United States)

    Mattar, Mohamed A.; El-Saadawy, Mohamed A.; Helmy, Mamdouh A.; Sorour, Hussien M.

    2017-04-01

    Surge flow irrigation is one of the irrigation techniques for controlling furrow irrigation. The aim of this study was to investigate the effect of surge furrow irrigation on water management compared with continuous irrigation for different tillage systems. An experimental field was treated with various tillage systems (mouldboard plough, chisel plough and rotary plough) and water irrigation application methods (continuous flow, control) in which irrigation water was applied continuously, and surge flow (3-surges, 4-surges and 5-surges) in which irrigation water was applied intermittently until it reached the tail end of the furrow. The results showed that water savings obtained using the surge technique were 18.58, 11.84 and 18.93% lower water use than with continuous flow, for the mouldboard, chisel and rotary ploughs, respectively. The 3-surges treatment with the rotary plough reduced the advance time by 25.36% from that for continuous irrigation. The 4-surges treatment with the mouldboard plough had the highest water application efficiency (88.13%). The 3-surges treatment with the rotary plough had the highest distribution uniformity (85.01%). The rotary plough did not cause as much soil aeration around the root system as the other tillage systems. The field research provided information about surge flow, aimed at reducing advance times and increasing irrigation efficiency.

  1. Mobile Systems Privacy: 'MobiPriv' A Robust System for Snapshot or Continuous Querying Location Based Mobile Systems

    Directory of Open Access Journals (Sweden)

    Philip S. Yu

    2012-04-01

    Full Text Available Many mobile phones have a GPS sensor that can report accurate location. Thus, if these location data are not protected adequately, they may cause privacy breeches. Moreover, several reports are available where persons have been stalked through GPS. The contributions of this paper are in two folds. First, we examine privacy issues in snapshot queries, and present our work and results in this area. The proposed method can guarantee that all queries are protected, while previously proposed algorithms only achieve a low success rate in some situations. Next, we discuss continuous queries and illustrate that current snapshot solutions cannot be applied to continuous queries. Then, we present results for our robust models for continuous queries. We will introduce a novel suite of algorithms called MobiPriv that addressed the shortcomings of previous work in location and query privacy in mobile systems. We evaluated the efficiency and effectiveness of the MobiPriv scheme against previously proposed anonymization approaches. For our experiments, we utilized real world traffic volume data, real world road network and mobile users generated realistically by a mobile object generator.

  2. Partial Regularity for Nonlinear Subelliptic Systems with Dini Continuous Coefficients in Heisenberg Groups

    Directory of Open Access Journals (Sweden)

    Jialin Wang

    2013-01-01

    Full Text Available This paper is concerned with partial regularity to nonlinear subelliptic systems with Dini continuous coefficients under quadratic controllable growth conditions in the Heisenberg group ℍn. Based on a generalization of the technique of -harmonic approximation introduced by Duzaar and Steffen, partial regularity to the sub-elliptic system is established in the Heisenberg group. Our result is optimal in the sense that in the case of Hölder continuous coefficients we establish the optimal Hölder exponent for the horizontal gradients of the weak solution on its regular set.

  3. Correlations of the Time Dependent Signal and the State of a Continuously Monitored Quantum System

    Science.gov (United States)

    Foroozani, N.; Naghiloo, M.; Tan, D.; Mølmer, K.; Murch, K. W.

    2016-03-01

    In quantum physics, measurements give random results and yield a corresponding random backaction on the state of the system subject to measurement. If a quantum system is probed continuously over time, its state evolves along a stochastic quantum trajectory. To investigate the characteristic properties of such dynamics, we perform weak continuous measurements on a superconducting qubit that is driven to undergo Rabi oscillations. From the data we observe a number of striking temporal correlations within the time dependent signals and the quantum trajectories of the qubit, and we discuss their explanation in terms of quantum measurement and photodetection theory.

  4. A FORTRAN program for the analysis of linear continuous and sample-data systems

    Science.gov (United States)

    Edwards, J. W.

    1976-01-01

    A FORTRAN digital computer program which performs the general analysis of linearized control systems is described. State variable techniques are used to analyze continuous, discrete, and sampled data systems. Analysis options include the calculation of system eigenvalues, transfer functions, root loci, root contours, frequency responses, power spectra, and transient responses for open- and closed-loop systems. A flexible data input format allows the user to define systems in a variety of representations. Data may be entered by inputing explicit data matrices or matrices constructed in user written subroutines, by specifying transfer function block diagrams, or by using a combination of these methods.

  5. An intelligent factory-wide optimal operation system for continuous production process

    Science.gov (United States)

    Ding, Jinliang; Chai, Tianyou; Wang, Hongfeng; Wang, Junwei; Zheng, Xiuping

    2016-03-01

    In this study, a novel intelligent factory-wide operation system for a continuous production process is designed to optimise the entire production process, which consists of multiple units; furthermore, this system is developed using process operational data to avoid the complexity of mathematical modelling of the continuous production process. The data-driven approach aims to specify the structure of the optimal operation system; in particular, the operational data of the process are used to formulate each part of the system. In this context, the domain knowledge of process engineers is utilised, and a closed-loop dynamic optimisation strategy, which combines feedback, performance prediction, feed-forward, and dynamic tuning schemes into a framework, is employed. The effectiveness of the proposed system has been verified using industrial experimental results.

  6. Robust stability test for 2-D continuous-discrete systems with interval parameters

    Institute of Scientific and Technical Information of China (English)

    肖扬

    2004-01-01

    It is revealed that the dynamic stability of 2-D recursive continuous-discrete systems with interval parameters involves the problem of robust Hurwitz-Schur stability of bivariate polynomials family. It is proved that the HurwitzSchur stability of the denominator polynomials of the systems is necessary and sufficient for the asymptotic stability of the 2-D hybrid systems. The 2-D hybrid transformation, i.e. 2-D Laplace-Z transformation, has been proposed to solve the stability analysis of the 2-D continuous-discrete systems, to get the 2-D hybrid transfer functions of the systems. The edge test for the Hurwitz-Schur stability of interval bivariate polynomials is introduced. The Hurwitz-Schur stability of the interval family of 2-D polynomials can be guaranteed by the stability of its finite edge polynomials of the family. An algorithm about the stability test of edge polynomials is given.

  7. Entre a saúde coletiva e a saúde mental: um instrumental metodológico para avaliação da rede de Centros de Atenção Psicossocial (CAPS do Sistema Único de Saúde Public health and mental health: methodological tools to evaluate the Brazilian Network of Referral Centers for Psycho-Social Care (CAPS in the Brazilian Unified Health System

    Directory of Open Access Journals (Sweden)

    Rosana Teresa Onocko-Campos

    2006-05-01

    Full Text Available Trata-se de discussão preliminar sobre possível instrumental metodológico para pesquisa avaliativa da rede de Centros de Atenção Psicossocial (CAPS do SUS. Problematiza-se a relevância que a área da saúde mental deveria ter para a saúde coletiva, considerando a alta prevalência de transtornos psíquicos e relativa carência de estudos da interface dessas áreas. Destacam-se as características dos CAPS para demonstrar que são serviços particularmente complexos. Considera-se imprescindível a aproximação das duas áreas para a constituição de um campo interdisciplinar de saberes e práticas, e aponta-se a necessidade dessa convergência para o desenvolvimento de um processo avaliativo sistemático dos CAPS. Levando-se em conta a complexidade do objeto e visando gerar subsídios para a Reforma Psiquiátrica Brasileira, com base em instrumentos da pesquisa avaliativa, propõe-se: a importância de se resgatar a participação de diversos atores no processo avaliativo, a necessidade de coletar e sistematizar diversos estudos desenvolvidos na academia sobre o tema, e a importância de promover um novo território de pesquisa no âmbito das políticas públicas de saúde, que possa subsidiar formuladores, gestores e equipes na reformulação de suas práticas.This article presents a preliminary discussion of potential methodological tools for qualitative research on the Network of Referral Centers for Psycho-Social Care (CAPS in the Brazilian Unified Health System (SUS. The relevance of mental health within the field of public health is examined. The study focuses on the high prevalence of mental disorders and the disproportionate lack of studies on the interface between mental health and public health. The establishment of an interdisciplinary field between public health and mental health is proposed to meet common needs by achieving similar perspectives in knowledge and practice. A particular group of tools is proposed, emphasizing

  8. Policy choices in dementia care-An exploratory analysis of the Alberta continuing care system (ACCS) using system dynamics.

    Science.gov (United States)

    Cepoiu-Martin, Monica; Bischak, Diane P

    2017-08-01

    The increase in the incidence of dementia in the aging population and the decrease in the availability of informal caregivers put pressure on continuing care systems to care for a growing number of people with disabilities. Policy changes in the continuing care system need to address this shift in the population structure. One of the most effective tools for assessing policies in complex systems is system dynamics. Nevertheless, this method is underused in continuing care capacity planning. A system dynamics model of the Alberta Continuing Care System was developed using stylized data. Sensitivity analyses and policy evaluations were conducted to demonstrate the use of system dynamics modelling in this area of public health planning. We focused our policy exploration on introducing staff/resident benchmarks in both supportive living and long-term care (LTC). The sensitivity analyses presented in this paper help identify leverage points in the system that need to be acknowledged when policy decisions are made. Our policy explorations showed that the deficits of staff increase dramatically when benchmarks are introduced, as expected, but at the end of the simulation period, the difference in deficits of both nurses and health care aids are similar between the 2 scenarios tested. Modifying the benchmarks in LTC only versus in both supportive living and LTC has similar effects on staff deficits in long term, under the assumptions of this particular model. The continuing care system dynamics model can be used to test various policy scenarios, allowing decision makers to visualize the effect of a certain policy choice on different system variables and to compare different policy options. Our exploration illustrates the use of system dynamics models for policy making in complex health care systems. © 2017 John Wiley & Sons, Ltd.

  9. Amélioration du rendement d'un onduleur à Z-source par une stratégie d'adaptation de sa tension du bus continu.

    OpenAIRE

    BATTISTON, Alexandre

    2014-01-01

    International audience; Cet article propose une méthode de contrôle visant à adapter la tension de bus continu d'un système de traction électrique utilisant un onduleur à source impédante (Z-source) et alimentant une machine synchrone à aimants. L'objectif de la commande proposée consiste en l'amélioration du rendement global du système en réduisant le surdimensionnement de la référence de tension du bus continu. Elle est ainsi adaptée continument à la demande en puissance du moteur. Une comm...

  10. Sistema de informações para acompanhamento, controle e auditoria em saúde pública Information system for tracking, control and audit in public health

    Directory of Open Access Journals (Sweden)

    Giovanna S. F. Cerchiari

    2008-10-01

    Full Text Available Este artigo apresenta alternativas para a gestão dos recursos destinados à saúde pública, por meio de um sistema de informações para os programas de diabetes e hipertensão e resulta do interesse em analisar a efetividade dos programas destinados aos portadores de doenças crônico-degenerativas. As questões analisadas foram focadas em fatores que traduzem a efetividade das ações desenvolvidas, isto é, a capacidade de gerar resultados a partir dos investimentos feitos. Isso ocorreu por meio de um modelo proposto para análise do resultado, mediante o estabelecimento de um indicador que consolidou três frentes de resultado, o número de óbitos, internações e atendimentos ambulatoriais. O índice estabelecido para análise da efetividade derivou em um indicador de custos. Como percurso metodológico foi aplicado o modelo teórico de planejamento e controle de produção (PCP elaborado por Erdmann (1998, que considera sete etapas para a consolidação de informações fragmentadas em um sistema.This article presents alternatives to the management of resources destined for public health through an information system for diabetes and hypertension programs. It intends to analyze the effectiveness of the programs focused on chronic and degenerative disease porters. The questions analyzed were centered on factors that translated the developed actions effectiveness, that is, the capacity to get results through investments you have made. We used a model to investigate the results, intervening in the establishment of an indicator that consolidated three fronts of results, the number of deaths, hospitalizations and ambulatory appointments. The established index for effectiveness analysis resulted in a cost indicator. As a methodology we used a theoretical model of Production Control and Plan (PCP, elaborated by Erdmann (1998, which considered seven stages for a consolidation of a fragmented information system.

  11. Optimal Preview Control for a Class of Linear Continuous Stochastic Control Systems in the Infinite Horizon

    Directory of Open Access Journals (Sweden)

    Jiang Wu

    2016-01-01

    Full Text Available This paper discusses the optimal preview control problem for a class of linear continuous stochastic control systems in the infinite horizon, based on the augmented error system method. Firstly, an assistant system is designed and the state equation is translated to the assistant system. Then, an integrator is introduced to construct a stochastic augmented error system. As a result, the tracking problem is converted to a regulation problem. Secondly, the optimal regulator is solved based on dynamic programming principle for the stochastic system, and the optimal preview controller of the original system is obtained. Compared with the finite horizon, we simplify the performance index. We also study the stability of the stochastic augmented error system and design the observer for the original stochastic system. Finally, the simulation example shows the effectiveness of the conclusion in this paper.

  12. Sustainability of continuous improvement systems in industry: Survey of BAC and Navarre

    Directory of Open Access Journals (Sweden)

    Carmen Jaca García

    2010-02-01

    Full Text Available This article will examine the level of sustainability for companies in Continuous Improvement Management and the factors which are supporting sustainability during time, through a survey to 350 companies of Basque Autonomous Community and Navarra in June of 2009. The study presents some data about the development of the improvement systems. Then, factors that companies have related to the abandonment of improvement systems are analysed. Since improvement systems are based on workers’ participation, this study characterizes this participation. Finally, the elements which have been used in the improvement systems by the companies are analyzed, and how objectives and indicators are used in their management system. To conclude, the following key issues are emphasized: a higher involvement of workforce in improvement systems, the integration of improvement system in the management system and the establishment of associated indicators to the system.

  13. Perfil da assistência farmacêutica na atenção primária do Sistema Único de Saúde Pharmacist care in the Brazilian Primary Health Care System

    Directory of Open Access Journals (Sweden)

    Aílson da Luz André de Araújo

    2008-04-01

    Full Text Available Este artigo apresenta uma revisão e análise da assistência farmacêutica como parte integrante do sistema de atenção primária à saúde, no qual a qualidade do uso de medicamentos está diretamente relacionada à qualidade do serviço de saúde e aos elementos para a avaliação desta. As Unidades Básicas de Saúde constituem a principal porta de entrada do sistema de assistência à saúde estatal em nosso país. Entretanto, o vínculo do serviço farmacêutico está relacionado com o modelo curativo, centrado na consulta médica e pronto atendimento, com a farmácia apenas atendendo a essas demandas. A atividade de orientação aos usuários na farmácia das Unidades Básicas de Saúde torna-se praticamente impossível, pois na farmácia deságuam quase todas as mazelas do sistema de saúde, por estar no elo final do processo de atendimento. A solução do problema, no âmbito geral, não será simples, se mantida a forma como o serviço está estruturado, pois grande parte das pressões de demanda não depende do serviço de saúde em si, mas de políticas sociais inclusivas, as quais têm impacto direto nas condições de saúde da população. No âmbito específico, é fundamental que os gestores racionalizem a utilização dos medicamentos desde a prescrição até a utilização por parte do usuário.This paper presents a review and analysis of Pharmacist Care as an integrated part of the Primary Health Care System, in which quality use of medicines is directly related to quality health service and to elements for its evaluation. In our country the Basic Health Units represent the main entrance to the public health care system. The pharmaceutical services however are still linked to the care model centered in medical consultation and emergency care, with the pharmacy just satisfying their needs. Provide orientation to the users of a Basic Unit pharmacy is almost impossible because nearly all sore spots of the health system end up

  14. Academia da Cidade: um serviço de promoção da saúde na rede assistencial do Sistema Único de Saúde City Academy: a health promotion service in the healthcare network of the Unified Health System

    Directory of Open Access Journals (Sweden)

    Bruna Vieira de Lima Costa

    2013-01-01

    Full Text Available Analisar o perfil de saúde e nutricional dos usuários do Sistema Único de Saúde ingressantes em uma Academia da Cidade, de Belo Horizonte, Minas Gerais durante triênio. Estudo transversal com usuários > 20 anos. Coletaram-se dados sociodemográficos, de saúde, hábitos e consumo alimentar, e antropometria. Realizado testes Kolmogorov-Smirnov, ANOVA, Kruskal-Wallis, Qui-Quadrado e Exato de Fisher. Observou-se elevada prevalência de indivíduos hipertensos (41,6%, com excesso de peso (70,6% e riscos metabólicos associados à obesidade (67,6%. Cerca de 40% dos ingressantes apresentavam de 1 a 3 doenças crônicas e mais de 65% utilizavam medicamentos diariamente. Houve inadequação no consumo diário de frutas e hortaliças (75,3%, gordura aparente da carne (72,4% e bebidas açucaradas (54,2%. Apresentavam baixa escolaridade e renda, além de inadequações alimentares e elevadas prevalências de HAS, excesso de peso e riscos metabólicos o que sugere a busca, dos usuários, pelo serviço de promoção da saúde para o tratamento de doenças. O que ilustra a percepção curativista demonstrando ainda a escassez de iniciativas de cuidado à saúde na população. Denota-se a necessidade de se rever as ações nos diferentes níveis de atenção à saúde, visando promover maior integralidade do cuidado prestado.This is an analysis of the health and nutritional profile of users of the Unified Health System admitted to a City Academy in Belo Horizonte, Minas Gerais during a triennium. It is a cross-sectional study with users> 20 years and socio-demographic characteristics, health habits, food intake and anthropometrics were gathered. Kolmogorov-Smirnov tests, ANOVA, Kruskal-Wallis test, chi-square and Fisher exact test were applied. There was a high prevalence of hypertensive subjects (41.6%, overweight (70.6% and metabolic risks associated with obesity (67.6%. About 40% of entrants had 1-3 chronic diseases and over 65% used medication daily

  15. Use of a continuous twin screw granulation and drying system during formulation development and process optimization.

    Science.gov (United States)

    Vercruysse, J; Peeters, E; Fonteyne, M; Cappuyns, P; Delaet, U; Van Assche, I; De Beer, T; Remon, J P; Vervaet, C

    2015-01-01

    Since small scale is key for successful introduction of continuous techniques in the pharmaceutical industry to allow its use during formulation development and process optimization, it is essential to determine whether the product quality is similar when small quantities of materials are processed compared to the continuous processing of larger quantities. Therefore, the aim of this study was to investigate whether material processed in a single cell of the six-segmented fluid bed dryer of the ConsiGma™-25 system (a continuous twin screw granulation and drying system introduced by GEA Pharma Systems, Collette™, Wommelgem, Belgium) is predictive of granule and tablet quality during full-scale manufacturing when all drying cells are filled. Furthermore, the performance of the ConsiGma™-1 system (a mobile laboratory unit) was evaluated and compared to the ConsiGma™-25 system. A premix of two active ingredients, powdered cellulose, maize starch, pregelatinized starch and sodium starch glycolate was granulated with distilled water. After drying and milling (1000 μm, 800 rpm), granules were blended with magnesium stearate and compressed using a Modul™ P tablet press (tablet weight: 430 mg, main compression force: 12 kN). Single cell experiments using the ConsiGma™-25 system and ConsiGma™-1 system were performed in triplicate. Additionally, a 1h continuous run using the ConsiGma™-25 system was executed. Process outcomes (torque, barrel wall temperature, product temperature during drying) and granule (residual moisture content, particle size distribution, bulk and tapped density, hausner ratio, friability) as well as tablet (hardness, friability, disintegration time and dissolution) quality attributes were evaluated. By performing a 1h continuous run, it was detected that a stabilization period was needed for torque and barrel wall temperature due to initial layering of the screws and the screw chamber walls with material. Consequently, slightly deviating

  16. Prediction of dissolution-absorption relationships from a continuous dissolution/Caco-2 system.

    Science.gov (United States)

    Ginski, M J; Taneja, R; Polli, J E

    1999-01-01

    The objectives were 1) to design a continuous dissolution/Caco-2 system to predict the dissolution-absorption relationships for fast and slow dissolving formulations of piroxicam, metoprolol tartrate, and ranitidine HCl, and compare the predicted relationships with observed relationships from clinical studies; 2) to estimate the effect of croscarmellose sodium on ranitidine dissolution-absorption relationships; and 3) to estimate the effect of solubilizing agents on piroxicam dissolution-absorption relationships. A continuous dissolution/Caco-2 system was constructed from a dissolution apparatus and a diffusion cell, such that drug dissolution and permeation across a Caco-2 monolayer would occur sequentially and simultaneously. The continuous system generally matched observed dissolution-absorption relationships from clinical studies. For example, the system successfully predicted the slow metoprolol and slow ranitidiine formulations to be permeation-rate-limited. The system predicted the slow piroxicam formulation to be dissolution-rate-limited, and the fast piroxicam formulation to be permeation-rate-limited, in spite of piroxicam's high permeability and low solubility. Additionally, the system indicated croscarmellose sodium enhanced ranitidine permeability and predicted solubilizing agents to not modulate permeability. These results suggest a dissolution/Caco-2 system to be an experimentally based tool that may predict dissolution-absorption relationships from oral solid dosage forms, and hence the relative contributions of dissolution and permeation to oral drug absorption kinetics.

  17. Absolute Continuity Theorem for Random Dynamical Systems on $R^d$

    CERN Document Server

    Biskamp, Moritz

    2012-01-01

    In this article we provide a proof of the so called absolute continuity theorem for random dynamical systems on $R^d$ which have an invariant probability measure. First we present the construction of local stable manifolds in this case. Then the absolute continuity theorem basically states that for any two transversal manifolds to the family of local stable manifolds the induced Lebesgue measures on these transversal manifolds are absolutely continuous under the map that transports every point on the first manifold along the local stable manifold to the second manifold, the so-called Poincar\\'e map or holonomy map. In contrast to known results, we have to deal with the non-compactness of the state space and the randomness of the random dynamical system.

  18. An improved continuous flow analysis system for high-resolution field measurements on ice cores.

    Science.gov (United States)

    Kaufmann, Patrik R; Federer, Urs; Hutterli, Manuel A; Bigler, Matthias; Schüpbach, Simon; Ruth, Urs; Schmitt, Jochen; Stocker, Thomas F

    2008-11-01

    Continuous flow analysis (CFA) is a well-established method to obtain information about impurity contents in ice cores as indicators of past changes in the climate system. A section of an ice core is continuously melted on a melter head supplying a sample water flow which is analyzed online. This provides high depth and time resolution of the ice core records and very efficient sample decontamination as only the inner part of the ice sample is analyzed. Here we present an improved CFA system which has been totally redesigned in view of a significantly enhanced overall efficiency and flexibility, signal quality, compactness, and ease of use. These are critical requirements especially for operations of CFA during field campaigns, e.g., in Antarctica or Greenland. Furthermore, a novel deviceto measure the total air content in the ice was developed. Subsequently, the air bubbles are now extracted continuously from the sample water flow for subsequent gas measurements.

  19. Nitrogen fertilizer fate after introducing maize into a continuous paddy rice cropping system

    Science.gov (United States)

    Thiemann, Irabella; He, Yao; Siemens, Jan; Brüggemann, Nicolas; Lehndorf, Eva; Amelung, Wulf

    2017-04-01

    After introducing upland crops into permanent flooded cropping systems, soil conditions temporally change from anaerobic to aerobic, which profoundly impacts nitrogen (N) dynamics. In the framework of the DFG research unit 1701 ICON we applied a single 15N-urea pulse in a field experiment in the Philippines with three different crop rotations: continuous paddy rice, paddy rice-dry rice, and paddy rice-maize. Subsequently, we traced the fate of the labelled urea in bulk soil, rhizosphere, roots, biomass and microbial residues (amino sugars) within the following two years. 15N recovery in the first 5 cm of bulk soil was highest in the first dry season of continuous paddy rice cropping (37.8 % of applied 15N) and lowest in the paddy rice-maize rotation (19.2 %). While an accumulation over time could be observed in bulk soil in 5-20 cm depth of the continuous paddy rice system, the recoveries decreased over time within the following two years in the other cropping systems. Highest 15N-recovery in shoots and roots were found in the continuous paddy rice system in the first dry season (27.3 % in shoots, 3.2 % in roots) as well as in the following wet season (4.2 % in shoots, 0.3 % in roots). Lowest recoveries in biomass were found for the paddy rice-dry rice rotation. Long-term fixation of 15N in microbial biomass residues was observed in all cropping systems (2-3 % in the 3rd dry season). The results indicate that the introduction of maize into a continuous paddy rice cropping system can reduce the fertilizer N use efficiency especially in the first year, most likely due to nitrate leaching and gaseous losses to the atmosphere.

  20. Iterative Learning Control Design and Application for Linear Continuous Systems with Variable Initial States Based on 2-D System Theory

    OpenAIRE

    Wei Guan; Qiao Zhu; Xu-Dong Wang; Xu-Hui Liu

    2014-01-01

    This paper is concerned with the variable initial states problem in iterative learning control (ILC) for linear continuous systems. Firstly, the properties of the trajectory of 2-D continuous-discrete Roesser model are analyzed by using Lyapunov's method. Then, for any variable initial states which absolutely converge to the desired initial state, some ILC design criteria in the form of linear matrix inequalities (LMI) are given to ensure the convergence of the PD-type ILC rules. The converge...

  1. Delay-dependent H-infinity control for continuous time-delay systems via state feedback

    Institute of Scientific and Technical Information of China (English)

    Xinchun JIA; Yibo GAO; Jingmei ZHANG; Nanning ZHENG

    2007-01-01

    The delay-dependent H-infinity analysis and H-infinity control problems for continuous time-delay systems are studied. By introducing an equality with some free weighting matrices, an improved criterion of delay-dependent stability with H-infinity performance for such systems is presented, and a criterion of existence and some design methods of delay-dependent H-infinity controller for such systems are proposed in term of a set of matrix inequalities, which is solved efficiently by an iterative algorithm. Further, the corresponding results for the delay-dependent robust H-infinity analysis and robust H-infinity control problems for continuous time-delay uncertain systems are given. Finally, two numerical examples are given to illustrate the efficiency of the proposed method by comparing with the other existing results.

  2. Multi-stage continuous high cell density culture systems: a review.

    Science.gov (United States)

    Chang, Ho Nam; Jung, Kwonsu; Choi, Jin-Dal-Rae; Lee, Joon Chul; Woo, Hee-Chul

    2014-01-01

    A multi-stage continuous high cell density culture (MSC-HCDC) system makes it possible to achieve high productivity together with high product titer of many bioproducts. For long-term continuous operation of MSC-HCDC systems, the cell retention time and hydraulic retention time must be decoupled and strains (bacteria, yeast, plant, and animal cells) must be stable. MSC-HCDC systems are suitable for low-value high-volume extracellular products such as fuel ethanol, lactic acid or volatile fatty acids, and high-value products such as monoclonal antibodies as well as intracellular products such as polyhydroxybutyric acid (PHB), microbial lipids or a number of therapeutics. Better understanding of the fermentation kinetics of a specific product and reliable high-density culture methods for the product-generating microorganisms will facilitate timely industrialization of MSC-HCDC systems for products that are currently obtained in fed-batch bioreactors.

  3. Preview control for impulse-free continuous-time descriptor systems

    Science.gov (United States)

    Liao, Fucheng; Ren, Zhenqin; Tomizuka, Masayoshi; Wu, Jiang

    2015-06-01

    This paper studies the preview control problem of impulse-free linear continuous-time descriptor systems. The system is first decomposed into a normal system (i.e., slow subsystem) and an algebraic equation set, by restricted equivalent linear transformation. Then, applying the method of preview control theory to the slow subsystem, by taking derivatives on both the error vector and the state function, and with the error vector being a part of the new state vector, the augmented system is constructed and the tracking problem is transformed into a regulation problem. According to preview control theory, the controller of the augmented system can be obtained and the control input of the original descriptor system with preview function can be acquired by integrating on the controller of the augmented system. Both the stabilisability and detectability of the augmented system are discussed. Numerical simulation verifies the presented results.

  4. Continuous Dual Resetting of the Immune Repertoire as a Basic Principle of the Immune System Function

    Science.gov (United States)

    2017-01-01

    Idiopathic chronic inflammatory conditions (ICIC) such as allergy, asthma, chronic obstructive pulmonary disease, and various autoimmune conditions are a worldwide health problem. Understanding the pathogenesis of ICIC is essential for their successful therapy and prevention. However, efforts are hindered by the lack of comprehensive understanding of the human immune system function. In line with those efforts, described here is a concept of stochastic continuous dual resetting (CDR) of the immune repertoire as a basic principle that governs the function of immunity. The CDR functions as a consequence of system's thermodynamically determined intrinsic tendency to acquire new states of inner equilibrium and equilibrium against the environment. Consequently, immune repertoire undergoes continuous dual (two-way) resetting: against the physiologic continuous changes of self and against the continuously changing environment. The CDR-based dynamic concept of immunity describes mechanisms of self-regulation, tolerance, and immunosenescence, and emphasizes the significance of immune system's compartmentalization in the pathogenesis of ICIC. The CDR concept's relative simplicity and concomitantly documented congruency with empirical, clinical, and experimental data suggest it may represent a plausible theoretical framework to better understand the human immune system function. PMID:28246613

  5. Design and implementation of an e-class about continuous dynamical systems

    NARCIS (Netherlands)

    Heck, A.; Houwing, H.; Val, J.; Ekimova, L.; Papageorgiou, G.

    2009-01-01

    In 2008, a small team of university and secondary school teachers in the Netherlands jointly developed an e-class for students in their final pre-university year (age: 17-18 yrs) about continuous dynamical systems. The e-class is an innovative way of teaching and learning mathematics and science by

  6. Effect of delay time on the generation of chaos in continuous systems

    CERN Document Server

    Berezowski, Marek

    2016-01-01

    The present study deals with a theoretical analysis of the effect of delay time of energy transport upon the generation of complex dynamics in continuous physical system. The importance of this time for the presence of quasi - periodicity and chaos in a reactor is demonstrated. The considerations are preceded by the analysis of one - dimensional mathematical model.

  7. Continuous, pulsed and stopped flow in a u-flow injection system (numerical vs experimental)

    NARCIS (Netherlands)

    van Akker, E.B.; Bos, M.; van der Linden, W.E.

    1999-01-01

    The effects of continuous, pulsed and stopped flow on the dispersion of a sample injected into a μ-flow injection system were studied. A channel with a volume of 1 μl was used to compare experimental results with numerical results. The injection was 0.067 μl of bromocresolgreen solution into a borax

  8. A multistep continuous-flow system for rapid on-demand synthesis of receptor ligands

    DEFF Research Database (Denmark)

    Petersen, Trine P; Ritzén, Andreas; Ulven, Trond

    2009-01-01

    A multistep continuous-flow system for synthesis of receptor ligands by assembly of three variable building blocks in a single unbroken flow is described. The sequence consists of three reactions and two scavenger steps, where a Cbz-protected diamine is reacted with an isocyanate, deprotected, an...

  9. A Seismic Transmission System for Continuous Monitoring of the Lithosphere: A Proposition

    NARCIS (Netherlands)

    Unger, R.

    2002-01-01

    The main objective of this thesis is to enhance earthquake prediction feasibility. We present the concept and the design layout of a novel seismic transmission system capable of continuously monitoring the Lithosphere for changes in Earth physics parameters governing seismic wave propagation. New-te

  10. Computation of non-monotonic Lyapunov functions for continuous-time systems

    Science.gov (United States)

    Li, Huijuan; Liu, AnPing

    2017-09-01

    In this paper, we propose two methods to compute non-monotonic Lyapunov functions for continuous-time systems which are asymptotically stable. The first method is to solve a linear optimization problem on a compact and bounded set. The proposed linear programming based algorithm delivers a CPA1

  11. Exploring Academic Teachers' Continuance toward the Web-Based Learning System: The Role of Causal Attributions

    Science.gov (United States)

    Hung, Ming-Chien; Chang, I.-Chiu; Hwang, Hsin-Ginn

    2011-01-01

    The Expectation Confirmation Model (ECM) is a popular model used to explain the continuance of information system usage. However, past studies have found that the ECM, based on extrinsic motivations (e.g. perceived usefulness, user satisfaction), has limitations insofar as people often have both intrinsic and extrinsic motivations simultaneously.…

  12. 40 CFR Table 6 to Subpart Jjj of... - Requirements for Validating Continuous Emission Monitoring Systems (CEMS)

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 8 2010-07-01 2010-07-01 false Requirements for Validating Continuous Emission Monitoring Systems (CEMS) 6 Table 6 to Subpart JJJ of Part 62 Protection of Environment... Combustion Units Constructed on or Before August 30, 1999 Pt. 62, Subpt. JJJ, Table 6 Table 6 to Subpart JJJ...

  13. 40 CFR Table 7 to Subpart Jjj of... - Requirements for Continuous Emission Monitoring Systems (CEMS) a

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 8 2010-07-01 2010-07-01 false Requirements for Continuous Emission Monitoring Systems (CEMS) a 7 Table 7 to Subpart JJJ of Part 62 Protection of Environment ENVIRONMENTAL... Constructed on or Before August 30, 1999 Pt. 62, Subpt. JJJ, Table 7 Table 7 to Subpart JJJ of Part 62...

  14. A Seismic Transmission System for Continuous Monitoring of the Lithosphere: A Proposition

    NARCIS (Netherlands)

    Unger, R.

    2002-01-01

    The main objective of this thesis is to enhance earthquake prediction feasibility. We present the concept and the design layout of a novel seismic transmission system capable of continuously monitoring the Lithosphere for changes in Earth physics parameters governing seismic wave propagation.

  15. Theories and experiments on the stiffening effect of high-frequency excitation for continuous elastic systems

    DEFF Research Database (Denmark)

    Thomsen, Jon Juel

    2003-01-01

    One effect of strong mechanical high-frequency excitation may be to apparently "stiffen" a structure, a well-described phenomenon for discrete systems. The present study provides theoretical and experimental results on this effect for continuous elastic structures. A laboratory experiment is set ...

  16. A Seismic Transmission System for Continuous Monitoring of the Lithosphere: A Proposition

    NARCIS (Netherlands)

    Unger, R.

    2002-01-01

    The main objective of this thesis is to enhance earthquake prediction feasibility. We present the concept and the design layout of a novel seismic transmission system capable of continuously monitoring the Lithosphere for changes in Earth physics parameters governing seismic wave propagation. New-te

  17. Continuing Effectiveness of Personalized Self-Paced Instruction in Digital Systems Engineering

    Science.gov (United States)

    Roth, Charles H., Jr.

    1973-01-01

    Studied the effectiveness of applying Keller's personalized system of instruction (PSI) five consecutive times to the teaching of the switch principle in logic design problems. Concluded that the PSI method continued to be effective as compared with the lecture approach. (CC)

  18. Effects of legume green manures on forage produced in continuous wheat systems

    Science.gov (United States)

    Inorganic nitrogen (N) fertilizers are important to continuous systems of winter wheat (Triticum aestivum L. em Thell.) in the U.S. southern Great Plains (SGP). Costs have increased in recent years and resulted in producers considering legumes grown during summer fallow as N sources. This study (200...

  19. Space-time continuous models of swarm robotic systems supporting global-to-local programming

    CERN Document Server

    Hamann, Heiko; Nakamura, Yoshihiko

    2010-01-01

    Space-Time Continuous Models of Swarm Robotic Systems presents a control-algorithm-based model that predicts the behavior of large self-organizing robot groups, or robot swarms. Readers will find an extensive look into the interdisciplinary research field of swarm robotics.

  20. Continuous, pulsed and stopped flow in a μ-flow injection system (numerical vs experimental)

    NARCIS (Netherlands)

    Akker, van E.B.; Bos, M.; Linden, van der W.E.

    1999-01-01

    The effects of continuous, pulsed and stopped flow on the dispersion of a sample injected into a μ-flow injection system were studied. A channel with a volume of 1 μl was used to compare experimental results with numerical results. The injection was 0.067 μl of bromocresolgreen solution into a borax

  1. Optimal policies for Production-Clearing Systems under Continuous-Review

    NARCIS (Netherlands)

    Germs, R.; Foreest, van Nicky D.; Kilic, Onur A.

    2016-01-01

    In this paper, we consider a production-clearing system with compound Poisson demand under continuous review. The production facility produces one type of item without stopping and at a constant rate, and stores the product into a buffer to meet future demand. To prevent high inventory levels, a

  2. A Russian Keyword Spotting System Based on Large Vocabulary Continuous Speech Recognition and Linguistic Knowledge

    Directory of Open Access Journals (Sweden)

    Valentin Smirnov

    2016-01-01

    Full Text Available The paper describes the key concepts of a word spotting system for Russian based on large vocabulary continuous speech recognition. Key algorithms and system settings are described, including the pronunciation variation algorithm, and the experimental results on the real-life telecom data are provided. The description of system architecture and the user interface is provided. The system is based on CMU Sphinx open-source speech recognition platform and on the linguistic models and algorithms developed by Speech Drive LLC. The effective combination of baseline statistic methods, real-world training data, and the intensive use of linguistic knowledge led to a quality result applicable to industrial use.

  3. Robust passive filtering for continuous-time polytopic uncertain time-delay systems

    Institute of Scientific and Technical Information of China (English)

    LU Ling-ling; DUAN Guang-ren; WU Ai-guo

    2008-01-01

    To obtain a stable and proper linear filter to make the filtering error system robustly and strictly passive,the problem of full-order robust passive filtering for continuous-time polytopie uncertain time-delay systems was investigated.A criterion for the passivity of time-delay systems was firstly provided in terms of linear matrix inequalities(LMI).Then an LMI sufficient condition for the existence of a robust filter was established and a design procedure was proposed for this type of systems.A numerical example demonstrated the feasibility of the filtering design procedure.

  4. Robust dissipative filtering for continuous-time polytopic uncertain neutral systems

    Institute of Scientific and Technical Information of China (English)

    Duan Guangren; L(u) Lingling; Wu Aiguo

    2009-01-01

    This article is concerned with the problem of robust dissipative filtering for continuous-time polytopic uncertain neutral systems. The main purpose is to obtain a stable and proper linear filter such that the filtering error system is strictly dissipative. A new criterion for the dissipativity of neutral systems is first provided in terms of linear matrix inequalities (LMI). Then, an LMI sufficient condition for the existence of a robust filter is established and a design procedure is proposed for this type of systems. Two numerical examples are given. One illustrates the less conservativeness of the proposed criterion; the other demonstrates the validity of the filtering design procedure.

  5. Continual Energy Management System of Proton Exchange Membrane Fuel Cell Hybrid Power Electric Vehicles

    Directory of Open Access Journals (Sweden)

    Ren Yuan

    2016-01-01

    Full Text Available Current research status in energy management of Proton Exchange Membrane (PEM fuel cell hybrid power electric vehicles are first described in this paper, and then build the PEMFC/ lithium-ion battery/ ultra-capacitor hybrid system model. The paper analysis the key factors of the continuous power available in PEM fuel cell hybrid power electric vehicle and hybrid power system working status under different driving modes. In the end this paper gives the working flow chart of the hybrid power system and concludes the three items of the system performance analysis.

  6. Elements and Experiments of Shenzhen Continuous Operating Reference Stations(SZCORS) System

    Institute of Scientific and Technical Information of China (English)

    LUO Heping; SHI Xiaoyan; LIU Hui

    2005-01-01

    Real-time kinematic GPS precise positioning has been playing an increasing role in both surveying and navigation. Based on the city's fibre LAN network, Shenzhen Continuous Operating Reference Stations (SZCORS) system has been established and consists of GPS reference stations, system control center, user's data center, and real-time datacom network. The SZCORS system provides users the real-time centimeter positioning or post-processing millimeter positioning. This paper makes discussion on the structure of SZCORS system. Some experiments have been made to test the usablity, and then the data has been analyzed.

  7. A power conditioning system with kinetic energy storage using a continuously variable gearbox

    Energy Technology Data Exchange (ETDEWEB)

    Ruddell, A.J.; Freris, L.L. [Imperial Coll. of Science, Technology and Medicine, London (United Kingdom); Bleijs, J.A.M. [Leicester Univ. (United Kingdom); Infield, D.G. [Rutherford Appleton Lab., Chilton (United Kingdom)

    1995-12-31

    Integration of wind power into isolated networks and weak mains grids presents problems due to power fluctuations. Energy storage may be used to compensate for wind power fluctuations at the source. This paper discusses the requirements of an energy store, and describes details of a prototype system consisting of a flywheel, a mechanical continuously variable transmission (CVT), and a synchronous machine. The requirements for control of power, voltage, and frequency of the system are defined. Computer models and simulation are used to design suitable controllers, and optimise the dynamic response of the power conditioning system. The prototype system has been constructed and commissioned and results of initial tests are described. (Author)

  8. Enhanced LMI Representations for H2 Performance of Polytopic Uncertain Systems: Continuous-time Case

    Institute of Scientific and Technical Information of China (English)

    Ai-Guo Wu; Guang-Ren Duan

    2006-01-01

    Based on two recent results, several new criteria of H2 performance for continuous-time linear systems are established by introducing two slack matrices. When used in robust analysis of systems with polytopic uncertainties, they can reduce conservatism inherent in the earlier quadratic method and the established parameter-dependent Lyapunov function approach. Two numerical examples are included to illustrate the feasibility and advantage of the proposed representations.

  9. Distributed Optimization Design of Continuous-Time Multiagent Systems With Unknown-Frequency Disturbances.

    Science.gov (United States)

    Wang, Xinghu; Hong, Yiguang; Yi, Peng; Ji, Haibo; Kang, Yu

    2017-05-24

    In this paper, a distributed optimization problem is studied for continuous-time multiagent systems with unknown-frequency disturbances. A distributed gradient-based control is proposed for the agents to achieve the optimal consensus with estimating unknown frequencies and rejecting the bounded disturbance in the semi-global sense. Based on convex optimization analysis and adaptive internal model approach, the exact optimization solution can be obtained for the multiagent system disturbed by exogenous disturbances with uncertain parameters.

  10. Solution of the boundary value problem for optimal escape in continuous stochastic systems and maps.

    OpenAIRE

    S; Beri; Mannella, R.; Luchinsky, Dmitry G.; Silchenko, A. N.; McClintock, Peter V. E.

    2005-01-01

    Topologies of invariant manifolds and optimal trajectories are investigated in stochastic continuous systems and maps. A topological method is introduced that simplifies the solution of boundary value problems: The activation energy is calculated as a function of a set of parameters characterizing the initial conditions of the escape path. The method is applied explicitly to compute the optimal escape path and the activation energy for a variety of dynamical systems and maps.

  11. ERROR ANALYSIS OF AN APPROXIMATE OPTIMAL POLICY FOR AN INVENTORY SYSTEM WITH STOCHASTIC AND CONTINUOUS DEMANDS

    OpenAIRE

    WEI GENG; JIANYONG LIU; XIAOBO ZHAO

    2012-01-01

    For a periodic-review inventory system with stochastic and continuous demands and without setup costs, it is known that there exists a base-stock policy to be optimal. For a finite-horizon system with non-stationary parameters, it is essential to find approximate optimal policies because of the computational intractability of finding the optimal policy. This paper provides an approach, by which an analytical bound of the error between the costs of the approximate optimal policy and the optima...

  12. Continuous Implicit Authentication for Mobile Devices based on Adaptive Neuro-Fuzzy Inference System

    OpenAIRE

    Yao, Feng; Yerima, Suleiman Y.; Kang, BooJoong; Sezer, Sakir

    2017-01-01

    As mobile devices have become indispensable in modern life, mobile security is becoming much more important. Traditional password or PIN-like point-of-entry security measures score low on usability and are vulnerable to brute force and other types of attacks. In order to improve mobile security, an adaptive neuro-fuzzy inference system(ANFIS)-based implicit authentication system is proposed in this paper to provide authentication in a continuous and transparent manner.To illustrate the applic...

  13. Lewis Porter, John Coltrane. Sa vie, sa musique

    OpenAIRE

    Parent, Emmanuel

    2008-01-01

    Les éditions Outre Mesure viennent de mettre à la disposition du lectorat français, avec la qualité de mise en page et en musique qu’on leur connaît, un nouveau livre de référence en musicologie du jazz. Salué à sa sortie par la critique en langue anglaise en 1998, John Coltrane. Sa vie, sa musique constitue en effet un ouvrage fort complet pour qui veut s’immerger dans le langage du heavyweight champion. L’auteur, enseignant à Rutgers (l’université du New Jersey abritant depuis les années 19...

  14. Degradation of off-gas toluene in continuous pyrite Fenton system.

    Science.gov (United States)

    Choi, Kyunghoon; Bae, Sungjun; Lee, Woojin

    2014-09-15

    Degradation of off-gas toluene from a toluene reservoir and a soil vapor extraction (SVE) process was investigated in a continuous pyrite Fenton system. The removal of off-gas toluene from the toluene reservoir was >95% by 8h in the pyrite Fenton system, while it was ∼97 % by 3h in classic Fenton system and then rapidly decreased to initial level by 8h. Continuous consumption of low Fe(II) concentration dissolved from pyrite surface (0.05-0.11 mM) was observed in the pyrite Fenton system, which can lead to the effective and successful removal of the gas-phase toluene due to stable production of OH radical (OH). Inhibitor and spectroscopic test results showed that OH was a dominant radical that degraded gas-phase toluene during the reaction. Off-gas toluene from the SVE process was removed by 96% in the pyrite Fenton system, and remnant toluene from rebounding effect was treated by 99%. Main transformation products from toluene oxidation were benzoic acid (31.4%) and CO2 (38.8%) at 4h, while traces of benzyl alcohol (1.3%) and benzaldehyde (0.7%) were observed. Maximum operation time of continuous pyrite Fenton system was estimated to be 56-61 d and its optimal operation time achieving emission standard was 28.9 d. Copyright © 2014 Elsevier B.V. All rights reserved.

  15. СREATION OF CORRELATION FUNCTIONS OF LINEAR CONTINUOUS SYSTEMS BASED ON THEIR FUNDAMENTAL MATRICES

    Directory of Open Access Journals (Sweden)

    N. A. Vunder

    2015-11-01

    Full Text Available The paper presents a method of creating correlation matrices and functions of the state vectors and outputs of the linear continuous systems functioning under the conditions of stochastic stationary, in a broad sense, effects. Fundamental matrices form the basis of the method. We have shown that for the linear continuous systems with single dimensional input and single dimensional output the correlation output function of such system can be found as the free movement of this system generated by its initial state. This state is constructed from the variance matrix of the state vector and the transposed output matrix. We have elucidated that when a continuous system belongs to a class of multi-dimensional input – multi-dimensional output systems, the following options are available for solving the problem of creation of the correlation function of a linear system. The first option is to partition the system into separate channels. Then the approach developed for systems with onedimensional input and one-dimensional output is applied to each of the separate channels. The second option is used to preserve the vector nature of the stochastic external influence. It consists in partition of output vector to scalar components by separating output matrix into separate rows with subsequent formation of the correlation function according to the scheme for single dimensional input and single dimensional output type systems. The third option is based on the scalarization of matrix correlation output function by applying the singular value decomposition to it. That gives the possibility to form scalar majorant and minorant of correlation output functions. We have established that a key component of a computational procedure of creating the correlation function of continuous linear system is a variance matrix of the system state vector. In the case of functioning under an exogenous stochastic effect like "white noise" the variance matrix is calculated by

  16. Continuous blood pressure recordings simultaneously with functional brain imaging: studies of the glymphatic system

    Science.gov (United States)

    Zienkiewicz, Aleksandra; Huotari, Niko; Raitamaa, Lauri; Raatikainen, Ville; Ferdinando, Hany; Vihriälä, Erkki; Korhonen, Vesa; Myllylä, Teemu; Kiviniemi, Vesa

    2017-03-01

    The lymph system is responsible for cleaning the tissues of metabolic waste products, soluble proteins and other harmful fluids etc. Lymph flow in the body is driven by body movements and muscle contractions. Moreover, it is indirectly dependent on the cardiovascular system, where the heart beat and blood pressure maintain force of pressure in lymphatic channels. Over the last few years, studies revealed that the brain contains the so-called glymphatic system, which is the counterpart of the systemic lymphatic system in the brain. Similarly, the flow in the glymphatic system is assumed to be mostly driven by physiological pulsations such as cardiovascular pulses. Thus, continuous measurement of blood pressure and heart function simultaneously with functional brain imaging is of great interest, particularly in studies of the glymphatic system. We present our MRI compatible optics based sensing system for continuous blood pressure measurement and show our current results on the effects of blood pressure variations on cerebral brain dynamics, with a focus on the glymphatic system. Blood pressure was measured simultaneously with near-infrared spectroscopy (NIRS) combined with an ultrafast functional brain imaging (fMRI) sequence magnetic resonance encephalography (MREG, 3D brain 10 Hz sampling rate).

  17. Continuous Drug Infusion for Diabetes Therapy: A Closed-Loop Control System Design

    Directory of Open Access Journals (Sweden)

    Jiming Chen

    2008-03-01

    Full Text Available While a typical way for diabetes therapy is discrete insulin infusion based on long-time interval measurement, in this paper, we design a closed-loop control system for continuous drug infusion to improve the traditional discrete methods and make diabetes therapy automatic in practice. By exploring the accumulative function of drug to insulin, a continuous injection model is proposed. Based on this model, proportional-integral-derivative (PID and fuzzy logic controllers are designed to tackle a control problem of the resulting highly nonlinear plant. Even with serious disturbance of glucose, such as nutrition absorption at meal time, the proposed scheme can perform well in simulation experiments.

  18. Continuous Drug Infusion for Diabetes Therapy: A Closed-Loop Control System Design

    Directory of Open Access Journals (Sweden)

    Xiao Yang

    2008-01-01

    Full Text Available Abstract While a typical way for diabetes therapy is discrete insulin infusion based on long-time interval measurement, in this paper, we design a closed-loop control system for continuous drug infusion to improve the traditional discrete methods and make diabetes therapy automatic in practice. By exploring the accumulative function of drug to insulin, a continuous injection model is proposed. Based on this model, proportional-integral-derivative (PID and fuzzy logic controllers are designed to tackle a control problem of the resulting highly nonlinear plant. Even with serious disturbance of glucose, such as nutrition absorption at meal time, the proposed scheme can perform well in simulation experiments.

  19. Continuous improvement in the Industrial and Management Systems Engineering programme at Kuwait University

    Science.gov (United States)

    Aldowaisan, Tariq; Allahverdi, Ali

    2016-07-01

    This paper describes the process employed by the Industrial and Management Systems Engineering programme at Kuwait University to continuously improve the programme. Using a continuous improvement framework, the paper demonstrates how various qualitative and quantitative analyses methods, such as hypothesis testing and control charts, have been applied to the results of four assessment tools and other data sources to improve performance. Important improvements include the need to reconsider two student outcomes as they were difficult to implement in courses. In addition, through benchmarking and the engagement of Alumni and Employers, key decisions were made to improve the curriculum and enhance employability.

  20. Assessment of the accuracy of real-time continuous glucose monitoring system and its correlated factors

    Institute of Scientific and Technical Information of China (English)

    洛佩

    2014-01-01

    Objective To assess the factors that influence the accuracy of real-time continuous glucose monitoring system(RT-CGM).Methods A total of 79 diabetic patients wore RT-CGM for three days continuously while calibrating by interphalangeal glucose values 4-8 times a day.We counted matching rate of interphalangeal glucose values and RT-CGM probe value,and analyzed correlation of the matching rate with MAGE,SDBG,MBG,AUC10,AUC3.9,and NGE by Pearson correlation analysis and multiple linear

  1. Systems of Quasilinear Parabolic Equations with Discontinuous Coefficients and Continuous Delays

    Directory of Open Access Journals (Sweden)

    Tan Qi-Jian

    2011-01-01

    Full Text Available Abstract This paper is concerned with a weakly coupled system of quasilinear parabolic equations where the coefficients are allowed to be discontinuous and the reaction functions may depend on continuous delays. By the method of upper and lower solutions and the associated monotone iterations and by difference ratios method and various estimates, we obtained the existence and uniqueness of the global piecewise classical solutions under certain conditions including mixed quasimonotone property of reaction functions. Applications are given to three 2-species Volterra-Lotka models with discontinuous coefficients and continuous delays.

  2. Low power and self-reconfigurable WBAN controller for continuous bio-signal monitoring system.

    Science.gov (United States)

    Lee, Seulki; Yoo, Hoi-Jun

    2013-04-01

    The WBAN controller with Branched Bus (BB) topology and Continuous Data Transmission (CDT) protocol with low power consumption and self-reconfigurability is proposed for wearable healthcare applications. The BB topology and CDT protocol is a combination of conventional Bus and Star topology and a variation from TDMA protocol, respectively, while they are able to compensate for the electrical fault in bio-signal monitoring system caused by the electrode deformation. Thanks to them, the proposed WBAN controller enables more reliable operation in continuous bio-signal monitoring applications such as sleep monitoring.

  3. 40 CFR Table 6 to Subpart Bbbb of... - Model Rule-Requirements for Validating Continuous Emission Monitoring Systems (CEMS)

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 6 2010-07-01 2010-07-01 false Model Rule-Requirements for Validating Continuous Emission Monitoring Systems (CEMS) 6 Table 6 to Subpart BBBB of Part 60 Protection of Environment...—Requirements for Validating Continuous Emission Monitoring Systems (CEMS) For the following continuous...

  4. Optimization of transonic wind tunnel data acquisition and control systems for providing continuous mode tests

    Science.gov (United States)

    Petronevich, V. V.

    2016-10-01

    The paper observes the issues related to the increase of efficiency and information content of experimental research in transonic wind tunnels (WT). In particular, questions of optimizing the WT Data Acquisition and Control Systems (DACS) to provide the continuous mode test method are discussed. The problem of Mach number (M number) stabilization in the test section of the large transonic compressor-type wind tunnels at subsonic flow conditions with continuous change of the aircraft model angle of attack is observed on the example of T-128 wind tunnel. To minimize the signals distortion in T-128 DACS measurement channels the optimal MGCplus filter settings of the data acquisition system used in T-128 wind tunnel to measure loads were experimentally determined. As a result of the tests performed a good agreement of the results of balance measurements for pitch/pause and continuous test modes was obtained. Carrying out balance tests for pitch/pause and continuous test methods was provided by the regular data acquisition and control system of T-128 wind tunnel with unified software package POTOK. The architecture and functional abilities of POTOK software package are observed.

  5. Human factors in continuous time-concerned cooperative systems represented by NΣ-labeled calculus

    Institute of Scientific and Technical Information of China (English)

    Tetsuya MIZUTANI; Shigeru IGARASH; Masayuki SHIO; Yasuwo IKEDA

    2008-01-01

    N-E-labeled calculus is a generalization of N-labeled calculus so as to describe time-concerned recog-nition, knowledge, belief and decision of humans or com-puter programs together with related external physical or logical phenomena. N-labeled calculus is the smallest for-mal system applicable to verification and analysis of coop-erative real-timing systems on natural number time introduced as an adaptation of tense arithmetic (TA). A merging problem of vehicles with misunderstanding or incorrect recognition is discussed as an example of coop-erating systems controlling continuously changing objects including human factor. Euler's approximation is intro-duced in order to represent the continuously changing objects. Through this example, relationship among arti-ficial intelligence, external environment and human fac-tors is investigated.

  6. Hamiltonian-Driven Adaptive Dynamic Programming for Continuous Nonlinear Dynamical Systems.

    Science.gov (United States)

    Yang, Yongliang; Wunsch, Donald; Yin, Yixin

    2017-02-01

    This paper presents a Hamiltonian-driven framework of adaptive dynamic programming (ADP) for continuous time nonlinear systems, which consists of evaluation of an admissible control, comparison between two different admissible policies with respect to the corresponding the performance function, and the performance improvement of an admissible control. It is showed that the Hamiltonian can serve as the temporal difference for continuous-time systems. In the Hamiltonian-driven ADP, the critic network is trained to output the value gradient. Then, the inner product between the critic and the system dynamics produces the value derivative. Under some conditions, the minimization of the Hamiltonian functional is equivalent to the value function approximation. An iterative algorithm starting from an arbitrary admissible control is presented for the optimal control approximation with its convergence proof. The implementation is accomplished by a neural network approximation. Two simulation studies demonstrate the effectiveness of Hamiltonian-driven ADP.

  7. Event-Triggered Adaptive Dynamic Programming for Continuous-Time Systems With Control Constraints.

    Science.gov (United States)

    Dong, Lu; Zhong, Xiangnan; Sun, Changyin; He, Haibo

    2016-08-31

    In this paper, an event-triggered near optimal control structure is developed for nonlinear continuous-time systems with control constraints. Due to the saturating actuators, a nonquadratic cost function is introduced and the Hamilton-Jacobi-Bellman (HJB) equation for constrained nonlinear continuous-time systems is formulated. In order to solve the HJB equation, an actor-critic framework is presented. The critic network is used to approximate the cost function and the action network is used to estimate the optimal control law. In addition, in the proposed method, the control signal is transmitted in an aperiodic manner to reduce the computational and the transmission cost. Both the networks are only updated at the trigger instants decided by the event-triggered condition. Detailed Lyapunov analysis is provided to guarantee that the closed-loop event-triggered system is ultimately bounded. Three case studies are used to demonstrate the effectiveness of the proposed method.

  8. Development of an automated system for continuous monitoring of powered roof support in longwall panel

    Institute of Scientific and Technical Information of China (English)

    ATUL Kumar; DHEERAJ Kumar; SINGH U.K.; GUPTA P.S.

    2010-01-01

    Described the development of an Intrinsically Safe System for continuous monitoring of load and convergence of powered roof supports installed at longwall faces.The system developed for monitoring of behavior of a powered support in a mechanized longwall sublevel caving face. The logging system can be programmed for logging the data from the sensors at different logging intervals ranging from 16 h to 1 ms for logging variation in hydraulic pressures in legs and convergence of the support during progressive face advance. For recording dynamic loads, the data logger can be programmed to start fast logging, say at 10 ms intervals, when the pressure in a leg reaches a pre-specified threshold value, and continue fast logging until the pressure drops below this threshold value. This fast logging automatically stops when the pressure drops below this threshold value.

  9. Optical measurement system applied to continuous displacement monitoring of long-span suspension bridges

    Science.gov (United States)

    Lages Martins, L.; Rebordão, J. M.; Ribeiro, A. S.

    2013-04-01

    This paper provides a general description of main issues related to the design of an optical measurement system applied to continuous displacement monitoring of long-span suspension bridges. The proposed system's architecture is presented and its main components - camera and active targets - are described in terms of geometrical and radiometric characteristics required for long distance measurement of the tridimensional displacement of the stiffness girder in the middle section of the bridge's central span. The intrinsic and extrinsic camera parameterization processes, which support the adopted measurement approach, are explained in a specific section. Since the designed measurement system is intended to perform continuous displacement monitoring in long distance observation framework, particular attention is given to environmental effects, namely, refraction, turbulence and sensor saturation phenomena, which can influence the displacement measurement accuracy. Finally, a measurement uncertainty method is discussed in order to provide a suitable solution for the determination of the accuracy related to the proposed measurement approach.

  10. Anticontrol of chaos in continuous-time systems via time-delay feedback.

    Science.gov (United States)

    Wang, Xiao Fan; Chen, Guanrong; Yu, Xinghuo

    2000-12-01

    In this paper, a systematic design approach based on time-delay feedback is developed for anticontrol of chaos in a continuous-time system. This anticontrol method can drive a finite-dimensional, continuous-time, autonomous system from nonchaotic to chaotic, and can also enhance the existing chaos of an originally chaotic system. Asymptotic analysis is used to establish an approximate relationship between a time-delay differential equation and a discrete map. Anticontrol of chaos is then accomplished based on this relationship and the differential-geometry control theory. Several examples are given to verify the effectiveness of the methodology and to illustrate the systematic design procedure. (c) 2000 American Institute of Physics.

  11. Industrial scale microwave processing of tomato juice using a novel continuous microwave system.

    Science.gov (United States)

    Stratakos, Alexandros Ch; Delgado-Pando, Gonzalo; Linton, Mark; Patterson, Margaret F; Koidis, Anastasios

    2016-01-01

    This study evaluated the effect of an industrial scale continuous flow microwave volumetric heating system in comparison to conventional commercial scale pasteurisation for the processing of tomato juice in terms of physicochemical properties, microbial characteristics and antioxidant capacity. The effect against oxidative stress in Caco-2 cells, after in vitro digestion was also investigated. Physicochemical and colour characteristics of juices were very similar between technologies and during storage. Both conventional and microwave pasteurisation inactivated microorganisms and kept them in low levels throughout storage. ABTS[Symbol: see text](+) values, but not ORAC, were higher for the microwave pasteurised juice at day 0 however no significant differences between juices were observed during storage. Juice processed with the microwave system showed an increased cytoprotective effect against H2O2 induced oxidation in Caco-2 cells. Organoleptic analysis revealed that the two tomato juices were very similar. The continuous microwave volumetric heating system appears to be a viable alternative to conventional pasteurisation.

  12. FUNDAMENTAL MATRIX OF LINEAR CONTINUOUS SYSTEM IN THE PROBLEM OF ESTIMATING ITS TRANSPORT DELAY

    Directory of Open Access Journals (Sweden)

    N. A. Dudarenko

    2014-09-01

    Full Text Available The paper deals with the problem of quantitative estimation for transport delay of linear continuous systems. The main result is received by means of fundamental matrix of linear differential equations solutions specified in the normal Cauchy form for the cases of SISO and MIMO systems. Fundamental matrix has the dual property. It means that the weight function of the system can be formed as a free motion of systems. Last one is generated by the vector of initial system conditions, which coincides with the matrix input of the system being researched. Thus, using the properties of the system- solving for fundamental matrix has given the possibility to solve the problem of estimating transport linear continuous system delay without the use of derivation procedure in hardware environment and without formation of exogenous Dirac delta function. The paper is illustrated by examples. The obtained results make it possible to solve the problem of modeling the pure delay links using consecutive chain of aperiodic links of the first order with the equal time constants. Modeling results have proved the correctness of obtained computations. Knowledge of transport delay can be used when configuring multi- component technological complexes and in the diagnosis of their possible functional degeneration.

  13. Minimum Energy Control of 2D Positive Continuous-Discrete Linear Systems

    Directory of Open Access Journals (Sweden)

    Kaczorek Tadeusz

    2014-09-01

    Full Text Available The minimum energy control problem for the 2D positive continuous-discrete linear systems is formulated and solved. Necessary and sufficient conditions for the reachability at the point of the systems are given. Sufficient conditions for the existence of solution to the problem are established. It is shown that if the system is reachable then there exists an optimal input that steers the state from zero boundary conditions to given final state and minimizing the performance index for only one step (q = 1. A procedure for solving of the problem is proposed and illustrated by a numerical example.

  14. On the quasi-controllability of continuous-time dynamic fuzzy control systems

    Energy Technology Data Exchange (ETDEWEB)

    Feng Yuhu [Department of Applied Mathematics, Dong Hua University, Shanghai 200051 (China)]. E-mail: yhfeng@dhu.edu.cn; Hu Liangjian [Department of Applied Mathematics, Dong Hua University, Shanghai 200051 (China)

    2006-10-15

    This paper gives the controllability analysis of continuous-time dynamic fuzzy control system from the aspect of fuzzy differential equations. The fuzzy state is different from the crisp state, as the counterpart of the controllability concept in the classical control theory, the controllable target state must be restricted within some limits. Hence, the concepts of admissible controllable state subset and quasi-controllability are introduced to describe the controllability property for fuzzy control system. The sufficient and necessary conditions for the fuzzy control system to be quasi-controllable are obtained and some examples are given to demonstrate the problems discussed in this paper.

  15. Continuous Firefly Algorithm for Optimal Tuning of Pid Controller in Avr System

    Science.gov (United States)

    Bendjeghaba, Omar

    2014-01-01

    This paper presents a tuning approach based on Continuous firefly algorithm (CFA) to obtain the proportional-integral- derivative (PID) controller parameters in Automatic Voltage Regulator system (AVR). In the tuning processes the CFA is iterated to reach the optimal or the near optimal of PID controller parameters when the main goal is to improve the AVR step response characteristics. Conducted simulations show the effectiveness and the efficiency of the proposed approach. Furthermore the proposed approach can improve the dynamic of the AVR system. Compared with particle swarm optimization (PSO), the new CFA tuning method has better control system performance in terms of time domain specifications and set-point tracking.

  16. Stochastic Modelling and Self Tuning Control of a Continuous Cement Raw Material Mixing System

    Directory of Open Access Journals (Sweden)

    Hannu T. Toivonen

    1980-01-01

    Full Text Available The control of a continuously operating system for cement raw material mixing is studied. The purpose of the mixing system is to maintain a constant composition of the cement raw meal for the kiln despite variations of the raw material compositions. Experimental knowledge of the process dynamics and the characteristics of the various disturbances is used for deriving a stochastic model of the system. The optimal control strategy is then obtained as a minimum variance strategy. The control problem is finally solved using a self-tuning minimum variance regulator, and results from a successful implementation of the regulator are given.

  17. Identification of linear continuous-time system using wavelet modulating filters

    Institute of Scientific and Technical Information of China (English)

    贺尚红; 钟掘

    2004-01-01

    An approach to identification of linear continuous-time system is studied with modulating functions. Based on wavelet analysis theory, the multi-resolution modulating functions are designed, and the corresponding filters have been analyzed. Using linear modulating filters, we can obtain an identification model that is parameterized directly in continuous-time model parameters. By applying the results from discrete-time model identification to the obtained identification model, a continuous-time estimation method is developed. Considering the accuracy of parameter estimates, an instrumental variable(V) method is proposed, and the design of modulating integral filter is discussed. The relationship between the accuracy of identification and the parameter of modulating filter is investigated, and some points about designing Gaussian wavelet modulating function are outlined. Finally, a simulation study is also included to verify the theoretical results.

  18. The continuous tower of scalar fields as a system of interacting dark matter–dark energy

    Directory of Open Access Journals (Sweden)

    Paulo Santos

    2015-10-01

    Full Text Available This paper aims to introduce a new parameterisation for the coupling Q in interacting dark matter and dark energy models by connecting said models with the Continuous Tower of Scalar Fields model. Based upon the existence of a dark matter and a dark energy sectors in the Continuous Tower of Scalar Fields, a simplification is considered for the evolution of a single scalar field from the tower, validated in this paper. This allows for the results obtained with the Continuous Tower of Scalar Fields model to match those of an interacting dark matter–dark energy system, considering that the energy transferred from one fluid to the other is given by the energy of the scalar fields that start oscillating at a given time, rather than considering that the energy transference depends on properties of the whole fluids that are interacting.

  19. Existence of Positive Periodic Solutions for Nonautonomous Predator-prey Systems with Discrete and Continuously Distributed Delays

    Institute of Scientific and Technical Information of China (English)

    Yan Lv; Wei Lv; Jian-hua Sun

    2007-01-01

    By using the continuation theorem of coincidence degree theory, the sufficient conditions to guarantee the existence of positive periodic solutions are established for nonautonomous predator-prey systems with discrete and continuously distributed delays.

  20. Satisfação dos usuários do sistema de saúde brasileiro: fatores associados e diferenças regionais User satisfaction in the Brazilian health system: associated factors and regional differences

    Directory of Open Access Journals (Sweden)

    Giselle Campozana Gouveia

    2009-09-01

    Full Text Available Desenvolver modelos de avaliação de satisfação que permitam comparar sistemas de saúde de diversos países é um esforço recente no Brasil. Esse tipo de avaliação representa importante ferramenta para desenvolver estratégias de gestão para o setor. Objetivo: identificar fatores e avaliar diferenças regionais do grau de satisfação dos usuários do sistema de saúde brasileiro, analisando os resultados da Pesquisa Mundial de Saúde (PMS e Pesquisa Mundial de Saúde com foco na Atenção Básica (PMS-AB. Foi realizado estudo avaliativo de corte transversal, onde as amostras foram selecionadas de forma aleatória. Foram incluídas pessoas maiores de 18 anos que utilizaram o sistema de saúde em períodos anteriores às coletas de dados. Enquadraram-se nos critérios de inclusão 3.932 usuários da PMS e 591 da PMS-AB. Aplicou-se modelo logístico multivariado, tendo como variável dependente a satisfação e, como variáveis independentes, sexo, idade, escolaridade, forma de pagamento de serviço, situação conjugal, autopercepção de saúde, doença de longa duração, diagnóstico de depressão, tristeza, número de moradores por domicílio, tipo de construção, estratos geográficos e indicador de bens. Os resultados revelaram que ser jovem, usuário exclusivo do SUS, ter baixa escolaridade e autopercepção de saúde ruim gerou mais chances de insatisfação dos usuários com o sistema de saúde brasileiro. Os moradores da Região Sul do país estão mais satisfeitos com o atendimento em saúde, enquanto para pernambucanos as chances de satisfação são menores quando se avalia a qualidade dos serviços de saúde. Os moradores desse estado apresentaram maior insatisfação na resolução de seus problemas de saúde quando precisaram de internação.Developing evaluation models of satisfaction that allow comparing health systems in different countries is a recent effort in Brazil. This is an important tool for building management

  1. Novel Approach to Preview Control for a Class of Continuous-Time Systems

    Directory of Open Access Journals (Sweden)

    Fucheng Liao

    2015-01-01

    Full Text Available This paper explicates a new method of designing a preview controller for a class of continuous-time systems. The augmented error system is constructed by the error system with the derivative of the tracking error signal, the state equation, and an identical equation of the derivative of the control input, which transforms a tracking problem into a regulation problem. Therefore, in the paper, the performance index contains the derivative of the control input. Based on the theory of optimal control, the regulator problem of the augmented error system is solved. Thus, the controller with preview compensation for the original system is deduced. The response speed of the closed-loop system is accelerated by the previewed demand output. A final numerical example is given to illustrate the validity of the proposed method.

  2. Continuation Power Flow Method based Assessment of Static Voltage Stability considering the Power System Contingencies

    Directory of Open Access Journals (Sweden)

    Khan Aafreen

    2014-11-01

    Full Text Available Power system security is recognized as one of the major problems in many power systems throughout the world. Power system insecurity such as transmission lines being overloaded causes transmission elements cascade outages, which may lead to complete blackout. In accordance with these reasons, the prediction and recognition of voltage instability in power system has particular importance and it makes the network security stronger. This work, by considering the power system contingencies based on the effects of them on Mega Watt Margin (MWM and maximum loading point (MLP is focused to analyse the voltage stability using continuation power flow method. The study has been carried out on IEEE 30-Bus Test System using MATLAB and PSAT softwares and results are presented.

  3. Auditoria no Sistema Único de Saúde: o papel do auditor no serviço odontológico Auditing in the Brazilian National Health System: the auditor's role in oral health services

    Directory of Open Access Journals (Sweden)

    Carlos Ayach

    2013-03-01

    Full Text Available A auditoria, na saúde, verifica os processos e resultados da prestação de serviços, pressupondo o desenvolvimento de um modelo de atenção adequado, de acordo com as legislações vigentes. Nesta pesquisa, objetivou-se analisar as atividades da auditoria no Sistema Único de Saúde no serviço de saúde bucal, buscando demonstrar as ações e a sua inserção nas três esferas de governo. Foram realizadas análise documental e levantamentos bibliográficos sobre os sistemas de auditoria e o papel do auditor no serviço odontológico desde 1969. Os resultados mostraram que foram encontrados seis artigos sobre auditoria odontológica no SUS e que a atuação do auditor odontológico é abrangente no gerenciamento do sistema, consistindo no controle, na avaliação, na supervisão e na orientação, bem como na garantia da participação social e acesso aos serviços. Na saúde bucal o auditor analisa, monitora e fiscaliza o planejamento das estratégias e os procedimentos efetuados; realiza o cadastramento dos profissionais, das unidades de saúde e a programação física orçamentária; viabiliza os dados para o sistema de informação e o pagamento dos serviços prestados; examina o cumprimento das pactuações, dando um enfoque educativo e não mais policialesco à resolubilidade dos problemas. Conclui-se que existem poucos estudos sobre auditoria odontológica no SUS e que o sistema de auditoria é um instrumento administrativo confiável e essencial para os gestores no desenvolvimento das ações de saúde.Auditing in health verifies processes and results in the provision of services, assuming the development of an adequate care model in accordance with the current legislation. In this research, the goal was to analyze the auditing activities within the Brazilian National Health System, in the oral health service, aiming to demonstrate the actions and their inclusion in the three governmental spheres. Documental analyses were undertaken

  4. Flow system for optical activity detection of vegetable extracts employing molecular exclusion continuous chromatographic detection

    Science.gov (United States)

    Fajer, V.; Rodríguez, C.; Naranjo, S.; Mesa, G.; Mora, W.; Arista, E.; Cepero, T.; Fernández, H.

    2006-02-01

    The combination of molecular exclusion chromatography and laser polarimetric detection has turned into a carbohydrate separation and quantification system for plant fluids of industrial value, making it possible the evaluation of the quality of sugarcane juices, agave juices and many other plant extracts. Some previous papers described a system where liquid chromatography separation and polarimetric detection using a LASERPOL 101M polarimeter with He-Ne light source allowed the collection and quantification of discrete samples for analytical purposes. In this paper, the authors are introducing a new improved system which accomplishes polarimetric measurements in a continuous flux. Chromatograms of several carbohydrates standard solutions were obtained as useful references to study juice quality of several sugarcane varieties under different physiological conditions. Results by either discrete or continuous flux systems were compared in order to test the validation of the new system. An application of the system to the diagnostics of scalded foliar is described. A computer program allowing the output of the chromatograms to a display on line and the possibility of digital storing, maxima detections, zone integration, and some other possibilities make this system very competitive and self-convincing.

  5. WhiteRef: A New Tower-Based Hyperspectral System for Continuous Reflectance Measurements

    Directory of Open Access Journals (Sweden)

    Karolina Sakowska

    2015-01-01

    Full Text Available Proximal sensing is fundamental to monitor the spatial and seasonal dynamics of ecosystems and can be considered as a crucial validation tool to upscale in situ observations to the satellite level. Linking hyperspectral remote sensing with carbon fluxes and biophysical parameters is critical to allow the exploitation of spatial and temporal extensive information for validating model simulations at different scales. In this study, we present the WhiteRef, a new hyperspectral system designed as a direct result of the needs identified during the EUROSPEC ES0903 Cost Action, and developed by Fondazione Edmund Mach and the Institute of Biometeorology, CNR, Italy. The system is based on the ASD FieldSpec Pro spectroradiometer and was designed to acquire continuous radiometric measurements at the Eddy Covariance (EC towers and to fill a gap in the scientific community: in fact, no system for continuous spectral measurements in the Short Wave Infrared was tested before at the EC sites. The paper illustrates the functioning of the WhiteRef and describes its main advantages and disadvantages. The WhiteRef system, being based on a robust and high quality commercially available instrument, has a clear potential for unattended continuous measurements aiming at the validation of satellites’ vegetation products.

  6. The Characteristics of the Systems of Continuing Pedagogical Education in Great Britain, Canada and the USA

    Directory of Open Access Journals (Sweden)

    Mukan Nataliya

    2016-06-01

    Full Text Available In the article the systems of continuing pedagogical education in Great Britain, Canada and the USA have been characterized. The main objectives are defined as the theoretical analysis of scientific-pedagogical literature, which highlights different aspects of the problem under research; identification of the common and distinctive features of the systems of continuing pedagogical education in Great Britain, Canada, the USA. The legislative and normative framework of teachers’ CPD in Great Britain, Canada and the USA has been highlighted; the levels of the systems of continuing pedagogical education have been presented; the main functions of these systems have been determined; the key models, forms and methods of teachers’ CPD have been defined. Foreign and domestic scientists have studied the teachers’ CPD: teacher leadership (T. Bush, M. Clement, D. Jackson, D. Pavlou, R. Venderberghe, models, forms and methods of teachers’ CPD (L. Chance, A. Hollingsworth, D. Ross, E. Villegas-Reimers, non-formal teachers’ CPD (J. Scheerens. The research methodology comprises theoretical (logical, induction and deduction, comparison and compatibility, structural and systematic, analysis and synthesis and applied (observations, questioning and interviewing methods. The research results have been presented.

  7. Technical note: Assessing gas equilibration systems for continuous pCO2 measurements in inland waters

    Science.gov (United States)

    Yoon, Tae Kyung; Jin, Hyojin; Oh, Neung-Hwan; Park, Ji-Hyung

    2016-07-01

    High-frequency continuous measurements of the partial pressure of CO2 (pCO2) are crucial for constraining the spatiotemporal dynamics of CO2 emissions from inland water systems. However, direct measurements of pCO2 are scarce, and no systematic comparisons have been conducted on the suitability of the widely used measurement systems for continuous underway or long-term deployment in various field conditions. We compared spray- and marble-type equilibrators and a membrane-enclosed CO2 sensor to assess their suitability for continuous long-term or underway pCO2 measurements in an urbanized river system in Korea. Both equilibrators had a shorter response time compared with the membrane-enclosed sensor, and could capture large spatial variations of pCO2 during a transect study along a highly urbanized river reach. The membrane-enclosed sensor based on passive equilibration provided comparable underway measurements along the river sections where pCO2 varied within the sensor detection range. When deployed in a eutrophic river site, the membrane-enclosed sensor was able to detect large diel variations in pCO2. However, biofouling on the membrane could reduce the accuracy of the measurement during long deployments exceeding several days. The overall results suggest that the fast response of the equilibrator systems facilitates capturing large spatial variations in pCO2 during short underway measurements. However, the attendant technical challenges of these systems, such as clogging and desiccant maintenance, have to be addressed carefully to enable their long-term deployment. The membrane-enclosed sensor would be suitable as an alternative tool for long-term continuous measurements if membrane biofouling could be overcome by appropriate antifouling measures such as copper mesh coverings.

  8. Continuous Dual Resetting of the Immune Repertoire as a Basic Principle of the Immune System Function

    Directory of Open Access Journals (Sweden)

    Silvana Balzar

    2017-01-01

    Full Text Available Idiopathic chronic inflammatory conditions (ICIC such as allergy, asthma, chronic obstructive pulmonary disease, and various autoimmune conditions are a worldwide health problem. Understanding the pathogenesis of ICIC is essential for their successful therapy and prevention. However, efforts are hindered by the lack of comprehensive understanding of the human immune system function. In line with those efforts, described here is a concept of stochastic continuous dual resetting (CDR of the immune repertoire as a basic principle that governs the function of immunity. The CDR functions as a consequence of system’s thermodynamically determined intrinsic tendency to acquire new states of inner equilibrium and equilibrium against the environment. Consequently, immune repertoire undergoes continuous dual (two-way resetting: against the physiologic continuous changes of self and against the continuously changing environment. The CDR-based dynamic concept of immunity describes mechanisms of self-regulation, tolerance, and immunosenescence, and emphasizes the significance of immune system’s compartmentalization in the pathogenesis of ICIC. The CDR concept’s relative simplicity and concomitantly documented congruency with empirical, clinical, and experimental data suggest it may represent a plausible theoretical framework to better understand the human immune system function.

  9. IkusaSA. Integrated Assessment for Sustainability

    CSIR Research Space (South Africa)

    Scholes, RJ

    2012-10-01

    Full Text Available , have intended and unintended consequences across a range of important issues. The IkusaSA model system comprises: ? A South African national IAM nested within one or more ?state-of-the-art? global IAMs that predict trade, climate change and human.... The desired outcome is a well-functioning interface between sectors and between technical assessments and policy action. WHAT IS AN INTEGRATED ASSESSMENT MODEL (IAM)? An IAM is a numerical simulation of the dynamic interaction between socio...

  10. The use of representative cases in hazard analysis of the tank waste remediation system at Hanford. The information in this document is a combination of HNF-SA-3168-A {ampersand} HNF-SA-3169-A - The control identification process

    Energy Technology Data Exchange (ETDEWEB)

    Niemi, B.J.

    1997-04-24

    During calendar year 1996, Duke Engineering and Services Hanford, Inc. conducted a safety analysis in accordance with DOE-STD-3009-94 as part of the development of a Final Safety Analysis Report (TSAR) for the Tank Waste Remediation System (TWRS) at the DOE Hanford site. The scope of the safety analysis of TWRS primarily addressed 177 large underground liquid waste storage tanks and associated equipment for transferring waste to and from tanks. The waste in the tanks was generated by the nuclear production and processing facilities at Hanford. The challenge facing the safety analysis team was to efficiently analyze the system within the time and budget allotted to provide the necessary and sufficient information for accident selection, control identification, and justification on the acceptability of the level of safety of TWRS. It was clear from the start that a hazard and accident analysis for each of the 177 similar tanks and supporting equipment was not practical nor necessary. For example, many of the tanks were similar enough that the results of the analysis of one tank would apply to many tanks. This required the development and use of a tool called the ''Hazard Topography''. The use of the Hazard Topography assured that all tank operations and configurations were adequately assessed in the hazard analysis and that the results (e.g., hazard identification and control decisions) were appropriately applied to all tanks and associated systems. The TWRS Hazard Topography was a data base of all the TWRS facilities (e.g., tanks, diversion boxes, transfer lines, and related facilities) along with data on their configuration, material at risk (MAR), hazards, and known safety related phenomenological issues. Facilities were then classified into groups based on similar combinations of configuration, MAR, hazards and phenomena. A hazard evaluation was performed for a tank or facility in each group. The results of these evaluations, also contained in

  11. On robust control of continuous-time systems with state-dependent uncertainties and its application to mechanical systems.

    Science.gov (United States)

    Li, Zhengchao; Zhao, Xudong; Yu, Jinyong

    2016-01-01

    This paper revisits the problems of robust stability analysis and control of continuous-time systems with state-dependent uncertainties. First, a more general polytopic model describing systems with state-dependent uncertain parameters is proposed, and such a system model is more applicable in practice. A low conservative stability condition is obtained for the system by introducing the Lagrange multiplier term and adding some weight matrix variables. Then, based on our proposed idea, the output-feedback controllers will be designed in two cases: (1) the system matrices share the same polytopic parameters; (2) the system matrices do not share the same polytopic parameters. The controllers are designed in a model-dependent manner, which can provide more flexibilities in control synthesis. Besides, a decay rate can be set in advance to achieve better system performances. Finally, a numerical example together with a classic mechanical system is used to demonstrate the effectiveness and applicability of our theoretical findings.

  12. Application of the continuing education systems project. CME as organization development.

    Science.gov (United States)

    Lanzilotti, S S; Finestone, A J

    1985-04-01

    Temple University's Office of Continuing Medical Education and 18 affiliated institutions implemented the Continuing Education Systems Project (CESP), in order to improve the quality of CME. As a result of the findings, it is proposed that the CME unit be accepted and supported not merely as an adjunct educational service for physicians but as an agent of the hospital's organizational development. Accordingly, the role of the CME unit is one of facilitator of change, functioning as a system feedback mechanism and coordinator of planned change. It is suggested that community hospitals need to develop a CME unit capable of integrating the resources of the institution in order to meet organizational, as well as individual and social needs. This is of particular importance in the face of new federal interventions in the health care field, which create the potential for conflicts between the physician and the hospital.

  13. Quantum hacking of a continuous-variable quantum-key-distribution system using a wavelength attack

    Science.gov (United States)

    Huang, Jing-Zheng; Weedbrook, Christian; Yin, Zhen-Qiang; Wang, Shuang; Li, Hong-Wei; Chen, Wei; Guo, Guang-Can; Han, Zheng-Fu

    2013-06-01

    The security proofs of continuous-variable quantum key distribution are based on the assumptions that the eavesdropper can neither act on the local oscillator nor control Bob's beam splitter. These assumptions may be invalid in practice due to potential imperfections in the implementations of such protocols. In this paper, we consider the problem of transmitting the local oscillator in a public channel and propose a wavelength attack which allows the eavesdropper to control the intensity transmission of Bob's beam splitter by switching the wavelength of the input light. Specifically we target continuous-variable quantum key distribution systems that use the heterodyne detection protocol using either direct or reverse reconciliation. Our attack is proved to be feasible and renders all of the final keys shared between the legitimate parties insecure, even if they have monitored the intensity of the local oscillator. To prevent our attack on commercial systems, a simple wavelength filter should be randomly added before performing monitoring detection.

  14. Point of collapse and continuation methods for large ac/dc systems

    Energy Technology Data Exchange (ETDEWEB)

    Canizares, C.A. (Escuela Politecnica Nacional, Quito (Ecuador)); Alvarado, F.L. (Univ. of Wisconsin, Madison, WI (United States))

    1993-02-01

    This paper describes the implementation of both Point of Collapse (PoC) methods and continuation methods for the computation of voltage collapse points (saddle-node bifurcations) in large ac/dc systems. A comparison of the performance of these methods is presented for real systems of up to 2,158 buses. The paper discusses computational details of the implementation of the PoC and continuation methods, and the unique challenges encountered due to the presence of high voltage direct current (HVDC) transmission, area interchange power control regulating transformers, and voltage and reactive power limits. The characteristics of a robust PoC power flow program are presented, and its application to detection and solution of voltage stability problems is demonstrated.

  15. Continuous-discrete model of parasite-host system dynamics: Trigger regime at simplest assumptions

    Directory of Open Access Journals (Sweden)

    L. V. Nedorezov

    2014-09-01

    Full Text Available In paper continuous-discrete model of parasite-host system dynamics is analyzed. Within the framework of model it is assumed that appearance of individuals of new generations of both populations is realized at fixed time moments tk=hk, t0=0, k=1,2,... , h=const>0; it means that several processes are compressed together: producing of eggs by hosts, attack of eggs by parasites (with respective transformation of host's eggs into parasite's eggs, staying of hosts and parasites in phase "egg", and appearance of new individuals. It is also assumed that death process of individuals has a continuous nature, but developments of both populations are realized independently between fixed time moments. Dynamic regimes of model are analyzed. In particular, it was obtained that with simplest assumptions about birth process in host population and numbers of attacked hosts regime with two non-trivial stable attractors in phase space of system can be realized.

  16. Programmers manual for IOSYM: an input-oriented simulation language for continuous systems. Volume 1

    Energy Technology Data Exchange (ETDEWEB)

    Smith, D.M.

    1981-06-01

    IOSYM is an extension of the GASP IV simulation language. It permits systems which are sequences of continuous processes to be modeled graphically. Normally the system can be described by data input only. The language permits stochastic sequencing and termination criteria for processes and allows crossing conditions for ending operations that are more general than GASP IV. Extensive capability exists for conditional branching and logical modification of the network. IOSYM has been used to model the cost of geothermal drilling where the various costly processes of drilling are represented by IOSYM operations. The language is much more general, however, since it retains more of GASP IV's discrete event capabilities and permits easy modeling of continuous processes.

  17. Pharyngeal pumping continues after laser killing of the pharyngeal nervous system of C. elegans

    Energy Technology Data Exchange (ETDEWEB)

    Avery, L.; Horvitz, H.R. (Massachusetts Institute of Technology, Cambridge (USA))

    1989-10-01

    Using a laser microbeam to kill specific subsets of the pharyngeal nervous system of C. elegans, we found that feeding was accomplished by two separately controlled muscle motions, isthmus peristalsis and pumping. The single neuron M4 was necessary and sufficient for isthmus peristalsis. The MC neurons were necessary for normal stimulation of pumping in response to food, but pumping continued and was functional in MC- worms. The remaining 12 neuron types were also unnecessary for functional pumping. No operation we did, including destruction of the entire pharyngeal nervous system, abolished pumping altogether. When we killed all pharyngeal neurons except M4, the worms were viable and fertile, although retarded and starved. Since feeding is one of the few known essential actions controlled by the nervous system, we suggest that most of the C. elegans nervous system is dispensable in hermaphrodites under laboratory conditions. This may explain the ease with which nervous system mutants are isolated and handled in C. elegans.

  18. Determination of continuous system transfer functions from sampled pulse response data

    Science.gov (United States)

    Jordan, Jay B.; Watkins, Wendell R.; Palacios, Fernando R.; Billingsley, Daniel R.

    1994-12-01

    A method for determining the transfer function of a continuous system from sampled responses to single- and multiple-pulse excitation is presented. The method is an extension of the sampled-edge-response method pioneered by the theoretical work of A. Papoulis in 1962 and the application of the theory to optical systems by B. Tatian in 1965. Occasions arise when pulse rather than step-function stimuli are available for system excitations. In such cases, the method presented is useful for determining the system transfer function. The use of antialiasing filters and estimation of non-bandwidth-limited transfer functions are discussed. Practical application of the method to characterizing the system transfer function of a commercial 8- to 12-micrometers infrared imager is also presented.

  19. Parameter design and performance analysis of zero inertia continuously variable transmission system

    Institute of Scientific and Technical Information of China (English)

    胡建军; 吉毅; 晏玖江

    2015-01-01

    In order to solve the problem of weak power performance of vehicle equipped with continuously variable transmission (CVT) system working under transient operating conditions, a new CVT equipped with planetary gear mechanism and flywheel was researched, a design method of transmission parameter optimization was proposed, and the comprehensive matching control strategy was established for the new transmission system. Fuzzy controllers for throttle opening and CVT speed ratio were designed, and power performance and fuel economy of both vehicles respectively equipped with conventional CVT system and new transmission system wrere compared and analyzed by simulation. The results show that power performance and fuel economy of the vehicle equipped with new transmission system are better than that equipped with conventional CVT, thus the rationality of the parameter design method and control algorithm are verified.

  20. Design of PI observers for continuous-time descriptor linear systems.

    Science.gov (United States)

    Wu, Ai-Guo; Duan, Guang-Ren

    2006-12-01

    A parametric design approach for proportional-integral (PI) observers for continuous-time descriptor linear systems is proposed based on a complete general parametric solution to the generalized Sylvester matrix equation. The proposed approach provides complete parameterizations for all the observer gain matrices, gives the parametric expression for the corresponding finite left eigenvector matrix of the observer system matrix, realizes elimination of impulsive responses, and guarantees the regularity of the observer system. The design method offers all the degrees of design freedom, which can be utilized to achieve various desired system specifications and performances and, thus, has great potentials in applications. A numerical example is employed to show the design procedure and illustrate the effect of the proposed approach. Simulation results show a satisfactory tracking performance for descriptor linear systems.

  1. Passage from quantum systems with continuous spectrum to quantum Poisson processes on Hilbert modules

    Science.gov (United States)

    Lu, Yun-Gang

    1995-01-01

    The present article is devoted to the explanation of the irreversible behavior of quantum systems as a limiting case (in a sense to be made precise) of usual quantum dynamics. One starts with a system, whose Hamiltonian has a continuous spectrum, interacting with a reservoir and studies the limits of quantities related to the whole compound system. A macroscopic equation is obtained for the limit of the compound system, which is a quantum stochastic differential equation of Poisson type on some Hilbert module (no longer a space) and whose coefficients are uniquely determined by the one-particle Hamiltonian of the original system and whose driving noises are the creation, annihilation, and number (or gauge) processes living on the Fock module over this module.

  2. Continuous Drip Flow System to Develop Biofilm of E. faecalis under Anaerobic Conditions

    Directory of Open Access Journals (Sweden)

    Ana Maria Gonzalez

    2014-01-01

    Full Text Available Purpose. To evaluate a structurally mature E. faecalis biofilm developed under anaerobic/dynamic conditions in an in vitro system. Methods. An experimental device was developed using a continuous drip flow system designed to develop biofilm under anaerobic conditions. The inoculum was replaced every 24 hours with a fresh growth medium for up to 10 days to feed the system. Gram staining was done every 24 hours to control the microorganism purity. Biofilms developed under the system were evaluated under the scanning electron microscope (SEM. Results. SEM micrographs demonstrated mushroom-shaped structures, corresponding to a mature E. faecalis biofilm. In the mature biofilm bacterial cells are totally encased in a polymeric extracellular matrix. Conclusions. The proposed in vitro system model provides an additional useful tool to study the biofilm concept in endodontic microbiology, allowing for a better understanding of persistent root canal infections.

  3. SYSTEM OF CONTINUOUS AGRICULTURAL EDUCATION IN PRECARPATHIA (LATE XIX - EARLY XX CENTURIES)

    OpenAIRE

    2015-01-01

    Ukrainian public communities have important achievements in development of the system of continuous agricultural education in Precarpathia - Ukrainian Pedagogical Society “Ridna Shkola”, “Prosvita”, “Silskyi Hospodar”, the Union of Ukrainians and others. In the late XIX - early XX centuries, they held important educational work among adults, organized various forms of training - courses, professional-complementary schools, agricultural schools, high schools, colleges, courses, public universi...

  4. Biological anoxic phosphorus removal in a continuous-flow external nitrification activated sludge system

    Energy Technology Data Exchange (ETDEWEB)

    Kapagiannidis, A. G.; Aivasidis, A.

    2009-07-01

    Application of Biological Nutrient Removal (BNR) process in wastewater treatment is necessitated for the protection of water bodies from eutrophication. an alternative BNR method is tested for simultaneous Carbon (C), Nitrogen (N) and Phosphorus (P) removal in a continuous-flow bench scale plant for municipal wastewater treatment. The plant operation is based on the activity of two microbial populations which grow under different operational conditions (two sludge system). (Author)

  5. High power all-solid-state quasi-continuous-wave tunable Ti: sapphire laser system

    Institute of Scientific and Technical Information of China (English)

    Lei Zou; Xin Ding; Yue Zou; Hongmei Ma; Wuqi Wen; Peng Wang; Jianquan Yao

    2005-01-01

    This paper reports a high power, all-solid-state, quasi-continuous-wave tunable Ti:sapphire laser system pumped by laser diode (LD) pumped frequency-doubled Nd:YAG laser. The maximum tuned output power of 4.2 W (797 nm) and tuned average power of 3.7 W were achieved when fixing the Ti:sapphire broadband output power at 5.0 W and applying 750-850 nm broadband coated mirror.

  6. a New Model for Describing Evolution and Control of Disaster System Including Instantaneous and Continuous Actions

    Science.gov (United States)

    Chen, Chang-Kun; Li, Zhi; Sun, Yun-Feng

    A new model for describing the disaster system including instantaneous and continuous action synchronously has been developed. The model is composed of three primary parts, that is, the impact from its causative disaster events, stochastic noise of disaster node and self-healing function, and every part is modeled concretely in terms of their characteristics in practice. Some key parameters, namely link appearance probability, retardation coefficient, ultimate repair capacity of government, dynamical modes considering different disaster evolving chains, and the positions of link with the specific performance in disaster network system are involved. Combined with a case study, the proposed model is applied to a certain disaster evolution system, and the influence law of different parameters on disaster evolution process, in disaster networks with instantaneous-action and/or continuous-action, is presented and compared. The results indicate that the destructive impact in the networks by link in continuous action is far greater an order of magnitude than that in instantaneous action. If a link in continuous action emerges in the disaster network system, properties of the causative event for the link, link appearance probability and its position in the network all have a notable influence to the severity of the disaster network. In addition, some peculiar phenomena are also commendably observed in the disaster evolution process based on the model, such as the multipeaks emerging in the destroyed rate number curve for some crisis nodes caused by their various inducing paths together with the relevant retardation coefficients, the existence of the critical value for ultimate repair capacity to recover the disaster node, and so on.

  7. GUARANTEED COST CONTROL OF CONTINUOUS-TIME UNCERTAIN SINGULAR SYSTEM WITH BOTH STATE AND INPUT DELAYS

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    The guaranteed cost control problem for a continuous-time uncertain singular system with state and control delays, and a given quadratic cost function is studied in this paper. Sufficient conditions for the existence of the guaranteed cost controller are derived based on the linear inequality (LMI) approach. A parameterized characterization of the guaranteed cost laws is given in terms of the feasible solutions to a certain LMI, and the cost function of guaranteed cost controller exists an upper bound.

  8. A critical view of the 'social reinsertion' concept and its implications for the practice of psychologists in the area of mental health in the Brazilian Unified Health System (Sistema Único de Saúde).

    Science.gov (United States)

    Frazatto, Carina F; Sawaia, Bader B

    2016-03-01

    Improving psychological practice in mental health services in the Brazilian Unified Health System (Sistema Único de Saúde) requires a critical analysis of core concepts of the psychiatric reform, such as 'social reinsertion'. This analysis, oriented by the dialectics of exclusion/inclusion, showed that this concept is impregnated with the adaptation paradigm and asylum view which prevents its effective implantation. The results suggest it is necessary to include social aspects in the discussion of mental health, articulating it with networks of social work and recuperating the revolutionary aspects of the psychiatric reform, thus demarcating the political nature of professional practices.

  9. The Forum for Defence of the Brazilian Unified Health System (Sistema Único de Saúde) and its role in building community participation in the fight against the privatization of health.

    Science.gov (United States)

    de Lara, Lutiane; Guareschi, Neuza Maria de Fátima

    2016-03-01

    Based on a Foucauldian framework, this article discusses the involvement of the Forum for Defence of the Sistema Único de Saúde in the fight against health care privatization. Community participation is a locus of experience that produces subjects implicated in the production of public health care. The locus of experience in this instance derives from the rejection of private elements that historically have been part of Brazilian public policies. It is an experience that produces workers and service users as agents able to defend the public system and endowed with instituting power.

  10. Biohydrogen production from enzymatic hydrolysis of food waste in batch and continuous systems

    Science.gov (United States)

    Han, Wei; Yan, Yingting; Shi, Yiwen; Gu, Jingjing; Tang, Junhong; Zhao, Hongting

    2016-01-01

    In this study, the feasibility of biohydrogen production from enzymatic hydrolysis of food waste was investigated. Food waste (solid-to-liquid ratio of 10%, w/v) was first hydrolyzed by commercial glucoamylase to release glucose (24.35 g/L) in the food waste hydrolysate. Then, the obtained food waste hydrolysate was used as substrate for biohydrogen production in the batch and continuous (continuous stirred tank reactor, CSTR) systems. It was observed that the maximum cumulative hydrogen production of 5850 mL was achieved with a yield of 245.7 mL hydrogen/g glucose (1.97 mol hydrogen/mol glucose) in the batch system. In the continuous system, the effect of hydraulic retention time (HRT) on biohydrogen production from food waste hydrolysate was investigated. The optimal HRT obtained from this study was 6 h with the highest hydrogen production rate of 8.02 mmol/(h·L). Ethanol and acetate were the major soluble microbial products with low propionate production at all HRTs. Enzymatic hydrolysis of food waste could effectively accelerate hydrolysis speed, improve substrate utilization rate and increase hydrogen yield. PMID:27910937

  11. Optimal control of nonlinear continuous-time systems in strict-feedback form.

    Science.gov (United States)

    Zargarzadeh, Hassan; Dierks, Travis; Jagannathan, Sarangapani

    2015-10-01

    This paper proposes a novel optimal tracking control scheme for nonlinear continuous-time systems in strict-feedback form with uncertain dynamics. The optimal tracking problem is transformed into an equivalent optimal regulation problem through a feedforward adaptive control input that is generated by modifying the standard backstepping technique. Subsequently, a neural network-based optimal control scheme is introduced to estimate the cost, or value function, over an infinite horizon for the resulting nonlinear continuous-time systems in affine form when the internal dynamics are unknown. The estimated cost function is then used to obtain the optimal feedback control input; therefore, the overall optimal control input for the nonlinear continuous-time system in strict-feedback form includes the feedforward plus the optimal feedback terms. It is shown that the estimated cost function minimizes the Hamilton-Jacobi-Bellman estimation error in a forward-in-time manner without using any value or policy iterations. Finally, optimal output feedback control is introduced through the design of a suitable observer. Lyapunov theory is utilized to show the overall stability of the proposed schemes without requiring an initial admissible controller. Simulation examples are provided to validate the theoretical results.

  12. SYSTEM OF CONTINUOUS AGRICULTURAL EDUCATION IN PRECARPATHIA (LATE XIX - EARLY XX CENTURIES

    Directory of Open Access Journals (Sweden)

    Halyna Bilavych

    2015-04-01

    Full Text Available Ukrainian public communities have important achievements in development of the system of continuous agricultural education in Precarpathia - Ukrainian Pedagogical Society “Ridna Shkola”, “Prosvita”, “Silskyi Hospodar”, the Union of Ukrainians and others. In the late XIX - early XX centuries, they held important educational work among adults, organized various forms of training - courses, professional-complementary schools, agricultural schools, high schools, colleges, courses, public universities etc. All this contributed to increasing of economic culture of the Ukrainian land. Formation of economic culture of children and adults in Precarpathia had its own characteristics, mainly associated with the economic, social, historical, climatic, cultural and educational conditions of life and activities. The system of continuous agricultural education included some educational institutions such as courses, vocational schools, which performed various levels of training. Agricultural schools became an important area of lifelong education. Let us consider, for example, the activities of two schools - one of the first established societies “Enlightenment” in the Precarpathia - schools in Mylovanya (Tlumachchyna and Starokosivska, which was founded in 1942 during the German occupation. Thus, on condition of the absence of state Ukrainian professional schools in the late XIX - early XX centuries civil societies created a system of continuous agricultural education which was aimed at improving the economic culture of young people and adults.

  13. Continuity and Change in Social-ecological Systems: the Role of Institutional Resilience

    Directory of Open Access Journals (Sweden)

    Elke Herrfahrdt-Pähle

    2012-06-01

    Full Text Available In recent years recurring political, economic, and environmental crises require questioning and re-evaluating dominant pathways of human development. However, political and economic frameworks seem to encompass deeply rooted resistance to fundamental changes (e.g., global financial crisis, climate change negotiations. In an effort to repair the system as fast as possible, those paradigms, mechanisms, and structures that led into the crisis are perpetuated. Instead of preserving conventional patterns and focusing on continuity, crises could be used as an opportunity for learning, adapting, and entering onto more sustainable pathways. However, there are different ways not only of arguing for sustainable pathways of development but also of conceptualizing continuity and change. By focusing on institutions, we illustrate the tension between the concepts of continuity and change, how they interact, and how they build or degrade institutional resilience. The analysis draws on empirical research in South Africa and Uzbekistan, which were locked in persistent regimes over decades. Faced with the challenge to transform, Uzbekistan chose a pathway of institutional continuity, while South Africa opted for comprehensive reforms and a high level of change. Based on these case studies, we illustrate the advantages and disadvantages of institutional continuity and change. Elements of institutional continuity during times of transformation include preserving key institutions, which define how the rules are made; maintaining social memory; providing transparency of reform processes and allowing them time to take effect. Elements of institutional change required during phases of consolidation include flexible legislation; regular reviews; and adaptation of legislation during and after implementation.

  14. Model for the feedback control system of bacterial growth. II. Growth in continuous culture.

    Science.gov (United States)

    Bleecken, S

    1989-12-07

    A mathematical model is developed that describes substrate limited bacterial growth in a continuous culture and that is based upon the conceptual framework elaborated in a previous paper for describing the feedback control system of cell growth [S. Bleecken, (1988). J. theor. Biol. 133, 37.] Central to the theory are the ideas that the limiting substrate is converted into low molecular weight building blocks of macromolecular synthesis which again are converted into biomass (RNA and protein) and that the rates of RNA and protein synthesis are controlled by the intracellular concentration of building blocks. It is shown that a continuous culture can be simulated by two interconnected feedback control systems the actuating signals of which are limiting substrate concentration and the intracellular concentration of building blocks, respectively. Three types of steady-states are found to appear in a continuous culture, besides the well-known stable steady-state of the whole culture there exist two batchlike steady-states of the biotic part of the culture which are metastable. The model is used to analyse the steady-states and their stability properties as well as the dynamic responses of biomass, RNA, protein, building block and substrate concentrations to changes in environmental conditions. Especially the inoculation of a continuous culture and the effects of step changes in dilution rate, inlet substrate concentration and growth temperature are studied in detail. Relations between the growth behaviour of a single cell and that of a continuous culture are derived. The RNA to protein ratio is introduced as a rough measure of the physiological state of cells and it is shown that a cell reacts to environmental changes with a simple pattern of basic responses in growth rate and physiological state. There are reasons to assume that the model presented is the minimal version of a structured model of bacterial growth and represents an optimum compromise between biological

  15. Effect of continuous hypothermic machine perfusion transport system (AirdriveTM) on canine kidney preservation

    Institute of Scientific and Technical Information of China (English)

    Hu Xiaopeng; Xue Wenrui; Zhang Qiang; Wang Wei; Zhang Jiqing; Zhang Xiaodong

    2014-01-01

    Background Organ preservation keeps the quality of the organs under prolonged ischemia.Continuous machine perfusions are gaining an important position in clinical research and practice.The aim of this study was to evaluate the protective effect of continuous hypothermic machine perfusion transport system (AirdriveTM) on cold ischemic injury of canine kidney.Methods Ten kidneys of five healthy preserving canines were taken out after general anesthesia.Five kidneys were stored using common cold preservation (CCP group) by immersing it in the organ preservation solution,mixed with water and ice,and kept in a cold room at 4℃.The other five kidneys were stored using continuous machine perfusion preservation (CMP group) and were placed into the AirdriveTM continuous machine perfusion device at room temperature.The renal tissues were examined by histopathology,electron microscopy,and mitochondrial activity check at different time points.Results Histologic sections showed that the structures of the ten renal tissues were similar during the first 24 hours.After 48 hours,the CCP group showed more pronounced changes,as the renal tubular epithelial cells were more obvious than those in the glomeruli.Oxygen consumption rate of state Ⅲ and Ⅳ respiration in the CCP group decreased after 12-48 hours and increased at 48 hours,respectively,when compared to the CMP group (P <0.05).Cortex respiratory control ratio and phosphorus oxygen ratio were significantly higher in the CMP group at 48 hours.Conclusion With prolonged storage time,the effect of continuous hypothermic machine perfusion transport system is better than that of common cold preservation on canine kidney.

  16. Designing nonuniform satellite systems for continuous global coverage using equatorial and polar circular orbits

    Science.gov (United States)

    Ulybyshev, S. Yu.

    2016-07-01

    We present a method for designing nonuniform satellite systems for continuous global coverage using a combination of equatorial and near-polar satellite segments in circular orbits. Equations are derived to determine the basic design parameters of the satellite system itself and the conditions of its closure at the joint of near-polar and equatorial segments. We analyze specific features of near-polar and equatorial satellite systems and their advantages and disadvantages compared with existing classes of near-polar phased and kinematically correct satellite systems. We estimate the minimum required number of spacecrafts in satellite systems for a given fold of coverage and present calculated dependences for classes of near-polar phased and equatorial satellite systems with different types of closure. For the class of kinematically correct satellite systems, we analyze the characteristics of systems with a minimum spacecraft flight height and reveal that the number of satellites in the orbital plane depends on the flight height for different folds of coverage. We bring examples of the best near-polar equatorial satellite systems of global coverage for different folds and a class of satellite systems with a fixed number of spacecrafts and orbital planes in them.

  17. Characterization of a New Continuous Air Monitoring System For the University of Massachusetts Lowell Research Reactor

    Science.gov (United States)

    Alqahtani, Mohammad Saad

    A continuous air monitor (CAM) is a critical piece of equipment to support radiation safety in nuclear facilities where the generation of airborne radioactivity is a possibility for either normal operations or accident scenarios. The University of Massachusetts Lowell Research Reactor is planning to install a new CAM system manufactured by Canberra Industries for monitoring airborne radioactive particulates. In this study, the new CAM was evaluated to determine 1) baseline response, 2) response to high exposure rates, 3) appropriate background compensation, 4) detection limits, and 5) alarm settings. The results of this study will help to properly integrate the new CAM into the reactor radiation monitoring system.

  18. An Equivalent LMI Representation of Bounded Real Lemma for Continuous-Time Systems

    Directory of Open Access Journals (Sweden)

    Xie Wei

    2008-01-01

    Full Text Available Abstract An equivalent linear matrix inequality (LMI representation of bounded real lemma (BRL for linear continuous-time systems is introduced. As to LTI system including polytopic-type uncertainties, by using a parameter-dependent Lyapunov function, there are several LMIs-based formulations for the analysis and synthesis of performance. All of these representations only provide us with different sufficient conditions. Compared with previous methods, this new representation proposed here provides us the possibility to obtain better results. Finally, some numerical examples are illustrated to show the effectiveness of proposed method.

  19. Validation of a new control system for Elekta accelerators facilitating continuously variable dose rate

    DEFF Research Database (Denmark)

    Bertelsen, Anders; Lorenzen, Ebbe L; Brink, Carsten

    2011-01-01

    Elekta accelerators controlled by the current clinically used accelerator control system, Desktop 7.01 (D7), uses binned variable dose rate (BVDR) for volumetric modulated arc therapy (VMAT). The next version of the treatment control system (Integrity) supports continuously variable dose rate (CVDR......) as well as BVDR. Using CVDR opposed to BVDR for VMAT has the potential of reducing the treatment time but may lead to lower dosimetric accuracy due to faster moving accelerator parts. Using D7 and a test version of Integrity, differences in ability to control the accelerator, treatment efficiency...

  20. PARTIAL STABILIZATION OF A CLASS OF CONTINUOUS NONLINEAR CONTROL SYSTEMS WITH SEPARATED VARIABLES

    Institute of Scientific and Technical Information of China (English)

    Jigui JIAN; Xiaoxin LIAO

    2005-01-01

    In this paper, the partial stabilization problem for a class of nonlinear continuous control systems with separated variables is investigated. Several stabilizing controllers are constructed based on the partial stability theory of Lyapunov and the property of M-matrix, and some of these stabilizing controllers are only related to partial state variables. The controllers constructed here are shown to guarantee partial asymptotic stability of the closed-loop systems and these sufficient conditions may give some instructions to actual engineering application. A example is also given to illustrate the design method.

  1. Bounded Model Checking and Inductive Verification of Hybrid Discrete-Continuous Systems

    DEFF Research Database (Denmark)

    Becker, Bernd; Behle, Markus; Eisenbrand, Fritz

    2004-01-01

    We present a concept to signicantly advance the state of the art for bounded model checking (BMC) and inductive verication (IV) of hybrid discrete-continuous systems. Our approach combines the expertise of partners coming from dierent domains, like hybrid systems modeling and digital circuit...... verication, bounded plan- ning and heuristic search, combinatorial optimization and integer programming. Af- ter sketching the overall verication ow we present rst results indicating that the combination and tight integration of dierent verication engines is a rst step to pave the way to fully automated BMC...

  2. 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.

  3. Finite-frequency model reduction of continuous-time switched linear systems with average dwell time

    Science.gov (United States)

    Ding, Da-Wei; Du, Xin

    2016-11-01

    This paper deals with the model reduction problem of continuous-time switched linear systems with finite-frequency input signals. The objective of the paper is to propose a finite-frequency model reduction method for such systems. A finite-frequency ? performance index is first defined in frequency domain, and then a finite-frequency performance analysis condition is derived by Parseval's theorem. Combined with the average dwell time approach, sufficient conditions for the existence of exponentially stable reduced-order models are derived. An algorithm is proposed to construct the desired reduced-order models. The effectiveness of the proposed method is illustrated by a numerical example.

  4. Energy-like conserved quantity of a nonlinear nonconsevative continuous system

    Institute of Scientific and Technical Information of China (English)

    CHEN Liqun

    2004-01-01

    A system whose energy is not conserved is called nonconservative. To investigate if there exists a conserved quantity that has the same dimension as energy and is positively definite, the author analyzed the bending vibration of an axially moving beam with geometric nonlinearity.Based on the governing equation, the energy was proven to be not conserved in the case where the beam has two simply supported or fixed ends. A definitely positive quantity with the energy dimension was defined. The quantity was verified to remain a constant during the motion. The investigation indicates that an energy-like conserved quantity may exist in a nonlinear nonconservative continuous system.

  5. Digraphs Structures Corresponding to the Analogue Realisation of Fractional Continuous-Time System

    Science.gov (United States)

    MARKOWSKI, Konrad A.

    2017-01-01

    This paper presents a method of the determination of a minimal realisation of the fractional continuous-time linear system. For the proposed method, a digraph-based algorithm was constructed. In this paper, we have shown how we can perform the transfer matrix using electrical circuits consisting of resistances, capacitance and source voltages. We have also shown how after using the constant phase element method we can realize such a system. The proposed method was discussed and illustrated with some theoretical and practical numerical examples.

  6. Development of a Supporting System of the Business Continuity Plan (BCP) for Construction Companies

    Science.gov (United States)

    Mano, Kouhei; Shiraki, Wataru; Inomo, Hitoshi; Kuyama, Hironori; Isouchi, Chikako

    Recently, the natural disaster and the accident have happened frequently. Thus, many companies and local organizations had been suffered such as discontinuity of business, loss of profits, customers' confidence decrease, and tremendous damage out of business. Especially the business stop of construction companies are influenced the recovery activities, so that it could be late the rescue activities. In this study, a supporting system of the business continuity plan (BCP) for construction companies is developed using the web server and database, and then some ideas for the user's friendly system are considered.

  7. High performance frame synchronization for continuous variable quantum key distribution systems.

    Science.gov (United States)

    Lin, Dakai; Huang, Peng; Huang, Duan; Wang, Chao; Peng, Jinye; Zeng, Guihua

    2015-08-24

    Considering a practical continuous variable quantum key distribution(CVQKD) system, synchronization is of significant importance as it is hardly possible to extract secret keys from unsynchronized strings. In this paper, we proposed a high performance frame synchronization method for CVQKD systems which is capable to operate under low signal-to-noise(SNR) ratios and is compatible with random phase shift induced by quantum channel. A practical implementation of this method with low complexity is presented and its performance is analysed. By adjusting the length of synchronization frame, this method can work well with large range of SNR values which paves the way for longer distance CVQKD.

  8. Floquet-based chaos control for continuous-time systems with stability analysis

    Energy Technology Data Exchange (ETDEWEB)

    Sakamoto, Noboru [Department of Aerospace Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603 (Japan)]. E-mail: sakamoto@nuae.nagoya-u.ac.jp

    2006-08-14

    In this Letter, a framework for controlling continuous-time chaotic systems is proposed. The framework is based on the Floquet theory of linear periodic differential equations and provides a practical method to stabilize unstable periodic orbits (UPOs) and a stability analysis of the closed loop systems. An example of controlling the circular restricted three-body problem known as halo orbits is illustrated. It is also reported that stabilization of UPOs can be effective by using the maximum principle to select a nominal orbit. It also turns out that the proposed framework enables us to give a theoretical account of the well-known occasional proportional feedback (OPF)

  9. Qualidade de vida, gestão do trabalho e plano de carreira como tecnologista em saúde na atenção básica do Sistema Único de Saúde em São Paulo, Brasil Quality of life, work management, and career planning as a primary care technology in the Unified National Health System in São Paulo State, Brazil

    Directory of Open Access Journals (Sweden)

    Francisco Antonio de Castro Lacaz

    2010-02-01

    Full Text Available O artigo trata do conceito de qualidade de vida no/do trabalho, articulando-o com a gestão do trabalho em saúde com base na avaliação de um instrumento de gestão do trabalho: o Plano de Carreiras, Cargos e Salários (PCCS. Objetiva-se analisá-lo como tecnologia de gestão do trabalho na atenção básica do Sistema Único de Saúde (SUS. São discutidos os PCCS de três municípios de São Paulo, Brasil: São Paulo, Guarulhos e Campinas, conforme diretriz emanada do Conselho Nacional de Saúde em 2006, mediante pesquisa de caráter qualitativo desenvolvida em 2007-2008. Retrata resultados de investigação realizada em oito municípios, considerando a visão do gestor, dos usuários representados nos Conselhos de Saúde e de sindicalistas e trabalhadores representantes dos trabalhadores de saúde que foram entrevistados. Conclui-se que a temática é incipiente como política pública de gestão, sendo matéria de pouco domínio seja dos usuários, seja dos sindicalistas e trabalhadores do setor saúde nos municípios estudados, situados dentre os mais populosos e "municípios-polo" de regiões de saúde.This article discusses the concept of quality of life in and at work, linked to health work management based on the evaluation of a work management instrument: the Career, Job, and Wage Plan. The aim was to analyze the plan as a work management technology in primary care in the Unified National Health System (SUS. The article discusses the plan in three municipalities in São Paulo State, Brazil: São Paulo, Guarulhos, and Campinas, in compliance with guidelines issued by the National Health Council in 2006, and using a qualitative survey conducted in 2007-2008. The study presents the findings from research in eight municipalities, based on interviews with managers, users (represented by Health Councils, and health workers and health sector trade unionists. The article concludes that this is still an incipient public management policy

  10. 40 CFR 60.1730 - How do I make sure my continuous emission monitoring systems are operating correctly?

    Science.gov (United States)

    2010-07-01

    ... emission monitoring systems are operating correctly? 60.1730 Section 60.1730 Protection of Environment... continuous emission monitoring systems are operating correctly? (a) Conduct initial, daily, quarterly, and annual evaluations of your continuous emission monitoring systems that measure oxygen (or carbon...

  11. 40 CFR 62.15185 - How do I make sure my continuous emission monitoring systems are operating correctly?

    Science.gov (United States)

    2010-07-01

    ... emission monitoring systems are operating correctly? 62.15185 Section 62.15185 Protection of Environment... make sure my continuous emission monitoring systems are operating correctly? (a) Conduct initial, daily, quarterly, and annual evaluations of your continuous emission monitoring systems that measure oxygen...

  12. Continuous synthesis of zinc oxide nanoparticles in a microfluidic system for photovoltaic application.

    Science.gov (United States)

    Kang, Hyun Wook; Leem, Juyoung; Yoon, Sang Youl; Sung, Hyung Jin

    2014-03-07

    This study describes the synthesis of zinc oxide nanoparticles (ZnO NPs) using a microfluidic system. A continuous and efficient synthetic process was developed based on a microfluidic reactor in which was implemented a time pulsed mixing method that had been optimized using numerical simulations and experimental methods. Numerical simulations revealed that efficient mixing conditions could be obtained over the frequency range 5-15 Hz. This system used ethanol solutions containing 30 mM sodium hydroxide (NaOH) or 10 mM dehydrated zinc acetate (Zn(OAc)2) under 5 Hz pulsed conditions, which provided the optimal mixing performance conditions. The ZnO NPs prepared using the microfluidic synthetic system or batch-processed system were validated by several analytical methods, including transmission electron microscopy (TEM), energy dispersive X-ray spectrometry (EDS), X-ray diffraction (XRD), UV/VIS NIR and zeta (ζ) potential analysis. Bulk-heterojunction organic photovoltaic cells were fabricated with the synthesized ZnO NPs to investigate the practicability and compared with batch-process synthesized ZnO NPs. The results showed that microfluidic synthesized ZnO NPs had good preservability and stability in working solution and the synthetic microfluidic system provided a low-cost, environmentally friendly approach to the continuous production of ZnO NPs.

  13. Meta Analisis sa Pagsusuri ng Maiikling Kwento sa mga Tesis at Disertasyon

    Directory of Open Access Journals (Sweden)

    Regina I. Cuizon

    2014-10-01

    Full Text Available Anumang mga pagbabago na makikita sa mundo ay bunga ng pananaliksik. Ang meta-analisis ay isa sa mga bunga ng pananaliksik na ginagamit sa kasalukuyan bilang teknik upang malaman iba pang mga nagsulputang informasyon. Ito’y pag-aaral sa mga pag-aaral. Isang kritikal at sistematikong pagsusuri sa istruktura ng mga pag-aaral. Maging gabay sa mga gradwadong paaralan sa pagpili ng paksang pagaaralan. Pangunahing layunin na matiyak ang mga pamamaraan sa pagsusuri ng maiikling kwento ng mga tesis at disertasyong nagawa mula sa mga piling SUCs. Desinyong kwalitatibo - kontent analisis sa pagsusuri ng: kaanyuan ayon sa suliranin, metodolohiya, paglalahad at interpretasyon ng mga datos, natuklasan, konklusyon, at rekomendasyon; kahinatnan ayon sa pagkatulad, pagkakaiba at kabuluhan; Emerging tema. Napag-alaman na ang karaniwang pinag-aralan ay 30% kahalagahang pangkatauhan, 20% larawangdiwa ng mga kababaihan at 10% gramatikang aspeto. Sa metodolohiyang ginamit, 80% desinyong kwalitatibo at 20% kwantitatibo-kwalitatibo. Sa paglikom ng datos 60% diretsahang pagsusuri, 30% talatanungan at 10% tseklis. Sa pag-analisa 90% kontent analisis at 10% gramatikal analisis. Batay sa natuklasan, ang pagsusuri ng maiikling kwento sa mga tesis at disertasyon mula sa iba’t ibang paaralan gamit ang meta analisis ay isang epektibo, mabisa, objektibong paraan at kagamitan na magagamit sa makatarungang paghatol; pamumuna sa kabuluhan at kagandahan; paghaham- bing sa mga kritikal na isyu; at pormulasyon ng panibagong pamantayan at batas.

  14. Iterative Learning Control Design and Application for Linear Continuous Systems with Variable Initial States Based on 2-D System Theory

    Directory of Open Access Journals (Sweden)

    Wei Guan

    2014-01-01

    Full Text Available This paper is concerned with the variable initial states problem in iterative learning control (ILC for linear continuous systems. Firstly, the properties of the trajectory of 2-D continuous-discrete Roesser model are analyzed by using Lyapunov's method. Then, for any variable initial states which absolutely converge to the desired initial state, some ILC design criteria in the form of linear matrix inequalities (LMI are given to ensure the convergence of the PD-type ILC rules. The convergence for variable initial states implies that the ILC rules can be used to achieve the perfect tacking for variable initial states, even if the system dynamic is unknown. Finally, the micropropulsion system is considered to illustrate efficiency of the proposed ILC design criteria.

  15. Continuous, Autonomous Measurement of the CO2 System in Waquoit Bay, MA

    Science.gov (United States)

    Martin, W. R.; Sayles, F. L.; McCorkle, D. C.; Weidman, C.

    2013-12-01

    The chemistry and biology of coastal systems are impacted by processes occurring on tidal, diurnal, and seasonal cycles as well as by unpredictable, discrete events. Continuous, autonomous measurements of key parameters are essential for capturing the impact of this range of processes on carbon cycling and ocean acidity. We deployed RATS, the Robotic Analyzer for the Total CO2 System in Seawater, to make continuous, high-precision, in situ measurements of pH and TCO2 for 35 days in June / July, 2013, in Waquoit Bay, MA. RATS was run with a sampling frequency of 2.5 hours, using on-board calibration. We combined these measurements with continuous salinity, temperature, water depth, and O2 measurements made by the Waquoit Bay National Estuarine Research Reserve and with additional WBNERR measurements of PAR, winds, and rainfall. There is a clear, diurnal signal in TCO2 and pH, whose intensity varies with incident radiation. The strongest signals in TCO2 and pH are associated with photosynthesis and respiration: pH increased and TCO2 decreased during the day, and the reverse at night. The daily ranges were as much as 600 μmol/kg in TCO2 and a factor of 10 in [H+]. Deviations from this signal, perhaps representing groundwater input, were apparent at tidal frequencies. The observed diurnal fluctuations of summertime TCO2 and pH were as large as the underlying seasonal variations in the studied area. Continuous, two-parameter carbonate system measurements are essential to quantifying the natural variability in the carbon cycle in coastal waters and to quantifying the effects of anthropogenic perturbations of the cycle, including eutrophication and ocean acidification, on coastal ecosystems.

  16. Robust dissipative filtering for continuous-time polytopic uncertain time-delay systems

    Institute of Scientific and Technical Information of China (English)

    LV Ling-ling; DUAN Guang-ren; WU Ai-guo

    2010-01-01

    This paper focuses on the problem of dissipative filtering for linear continuous-time polytopic uncertain time-delay systems.To obtain a stable and proper linear filter such that the filtering error system is strictly dissipative for all admissible uncertainties,a new dissipativity criterion which realizes separation between the Lyapunov matrices and the system dynamic matrices is firstly provided in terms of linear matrix inequalities (LMI).Then an LMI sufficient condition for the existence of a robust filter is established and a design procedure is proposed for this type of systems.One numerical example demonstrates less conservativeness of the proposed criterion,the other numerical example illustrates the validity of the proposed filter design.

  17. Discrete-Time Approximation for Nonlinear Continuous Systems with Time Delays

    Directory of Open Access Journals (Sweden)

    Bemri H’mida

    2016-05-01

    Full Text Available This paper is concerned with the discretization of nonlinear continuous time delay systems. Our approach is based on Taylor-Lie series. The main idea aims to minimize the effect of the delay and neglects the importance of nonlinear parameter by the linearization of the system study in an attempt to make its handling and easier programming as possible. We investigate a new method based on the development of new theoretical methods for the time discretization of nonlinear systems with time delay .The performance of these proposed discretization methods was validated by doing the numerical simulation using a nonlinear system with state delay. Some illustrative examples are given to show the effectiveness of the obtained results.

  18. Reinforcement learning for adaptive optimal control of unknown continuous-time nonlinear systems with input constraints

    Science.gov (United States)

    Yang, Xiong; Liu, Derong; Wang, Ding

    2014-03-01

    In this paper, an adaptive reinforcement learning-based solution is developed for the infinite-horizon optimal control problem of constrained-input continuous-time nonlinear systems in the presence of nonlinearities with unknown structures. Two different types of neural networks (NNs) are employed to approximate the Hamilton-Jacobi-Bellman equation. That is, an recurrent NN is constructed to identify the unknown dynamical system, and two feedforward NNs are used as the actor and the critic to approximate the optimal control and the optimal cost, respectively. Based on this framework, the action NN and the critic NN are tuned simultaneously, without the requirement for the knowledge of system drift dynamics. Moreover, by using Lyapunov's direct method, the weights of the action NN and the critic NN are guaranteed to be uniformly ultimately bounded, while keeping the closed-loop system stable. To demonstrate the effectiveness of the present approach, simulation results are illustrated.

  19. Políticas de saúde e crise do Estado de Bem-Estar: repercussões e possibilidades para o Sistema Único de Saúde Health policies and crisis of the Welfare State: repercussions and possibilities for the Unified Health System

    Directory of Open Access Journals (Sweden)

    Maria Raquel Gomes Maia Pires

    2006-08-01

    Full Text Available A institucionalização do Sistema Único de Saúde (SUS, orientada por princípios universalistas e solidários, pode ser vislumbrada sob a influência das tensões entre mercado e cidadania no contexto de redemocratização que o país viveu, ambientado nas lutas políticas que balançaram o país na elaboração da Constituição de 1988, na crise econômica que caracterizou a década perdida e no arrefecimento do Estado desenvolvimentista. Trata-se de um estudo teórico, que parte da premissa que o cenário econômico mundial transnacionalizado, com a conseqüente exigência de flexibilização das garantias sociais que o capital financeiro vem impondo aos Estados de bem-estar, traz repercussões estruturais para países em desenvolvimento ou periféricos, como o Brasil, pondo em risco a implementação dos princípios e diretrizes do SUS. Objetiva-se: a- Analisar a conformação das políticas sociais no capitalismo e o delineamento da crise do Estado de Bem-Estar social; b- Contextualizar as políticas de saúde do Brasil nas atuais transformações do capitalismo e redefinição do papel do Estado, analisando as repercussões para a implementação do SUS; e c- Apontar possibilidades para o enfrentamento da implementação do SUS no contexto em foco por meio da politicidade do cuidado - gestão da ajuda-poder para a (reconstrução da autonomia de sujeitos. Diante das ambigüidades de um sistema de saúde que se pretende equânime, numa conjuntura ditada pela mercantilização do direito à saúde, aposta-se em propostas e experiências de enfrentamento que fortaleçam o controle democrático da sociedade civil sobre a implementação das políticas públicas.The institutionalization of the Unified Health System (SUS, guided by principles of universalism and solidarism, can be viewed under the influences of the tensions between market forces and citizenship in the re-democratization context that the country experienced, adapted in the

  20. O sistema de saúde e as políticas de saúde na produção científica odontológica brasileira no período 1986-1993 The national health system and health policies in the Brazilian dentistry literature, 1986-1993

    Directory of Open Access Journals (Sweden)

    Paulo Capel Narvai

    1998-07-01

    Full Text Available A produção científica brasileira na área de odontologia preventiva e social, no período 1986-1993, foi analisada para verificar a ocorrência de temas relacionados às políticas de saúde e ao sistema de saúde. Artigos em revistas científicas brasileiras serviram como indicadores dessa produção. Realizou-se um survey para conhecer a origem institucional dos autores, suas titulações e preocupações temáticas, os tipos de pesquisas realizadas, as modalidades de artigos delas decorrentes e as fontes de financiamento. Foram analisados 386 artigos em 19 periódicos. Mais de três quartas partes da produção tiveram origem na universidade pública. RGO foi o periódico que mais publicou. Dos textos, 56,7% eram artigos originais. Revisões de literatura e ensaios somaram 30,3%. Mais da metade dos autores atuavam em São Paulo. O sexo masculino predominou. Política de saúde foi tema específico em 3 artigos (0,8% e sistema de saúde em 7 (1,8%. No crucial período histórico de reconquista e consolidação das liberdades democráticas, em pleno apogeu do processo da Reforma Sanitária, questões dessa ordem não despertaram significativamente o interesse dos pesquisadores científicos brasileiros da área odontológica.The Brazilian scientific literature on social and preventive dentistry from 1986 to 1993 was identified and analyzed to verify whether themes of papers referred to health policy and the national health system. Published scientific articles were used as the unit of analysis for the study. An analytical survey was conducted considering the following variables, amongst others: author's institutional affiliation; author's title; author's areas of interest; type of research; type of article; and research funding sources. Articles reviewed were published between the First and Second National Oral Health Conferences. There were 386 articles published in 19 journals, by at least 866 authors. More than 75% of the studies came from

  1. Dual-modality arterial pulse monitoring system for continuous blood pressure measurement.

    Science.gov (United States)

    Wen-Xuan Dai; Yuan-Ting Zhang; Jing Liu; Xiao-Rong Ding; Ni Zhao

    2016-08-01

    Accurate and ambulatory measurement of blood pressure (BP) is essential for efficient diagnosis, management and prevention of cardiovascular diseases (CVDs). However, traditional cuff-based BP measurement methods provide only intermittent BP readings and can cause discomfort with the occlusive cuff. Although pulse transit time (PTT) method is promising for cuffless and continuous BP measurement, its pervasive use is restricted by its limited accuracy and requirement of placing sensors on multiple body sites. To tackle these issues, we propose a novel dual-modality arterial pulse monitoring system for continuous blood pressure measurement, which simultaneously records the pressure and photoplethysmography (PPG) signals of radial artery. The obtained signals can be used to generate a pressure-volume curve, from which the elasticity index (EI) and viscosity index (VI) can be extracted. Experiments were carried out among 7 healthy subjects with their PPG, ECG, arterial pressure wave and reference BP collected to examine the effectiveness of the proposed indexes. The results of this study demonstrate that a linear regression model combining EI and VI has significantly higher BP tracking correlation coefficient as compared to the PTT method. This suggests that the proposed system and method can potentially be used for convenient and continuous blood pressure estimation with higher accuracy.

  2. Study of an ammonia-based wet scrubbing process in a continuous flow system

    Energy Technology Data Exchange (ETDEWEB)

    Resnik, Kevin P.; Pennline, Henry W.

    2013-03-01

    A continuous gas and liquid flow, regenerative scrubbing process for CO{sub 2} capture was demonstrated at the bench-scale level. An aqueous ammonia-based solution captures CO{sub 2} from simulated flue gas in an absorber and releases a nearly pure stream of CO{sub 2} in the regenerator. After the regeneration, the solution of ammonium compounds is recycled to the absorber. The design of a continuous flow unit was based on earlier exploratory results from a semi-batch reactor, where a CO{sub 2} and N{sub 2} simulated flue gas mixture flowed through a well-mixed batch of ammonia-based solution. During the semi-batch tests, the solution was cycled between absorption and regeneration steps to measure the carrying capacity of the solution at various initial ammonia concentrations and temperatures. Consequentially, a series of tests were conducted on the continuous unit to observe the effect of various parameters on CO{sub 2} removal efficiency and regenerator effectiveness within the flow system. The parameters that were studied included absorber temperature, regenerator temperature, initial NH{sub 3} concentration, simulated flue gas flow rate, liquid solvent inventory in the flow system, and height of the packed-bed absorber. From this testing and subsequent testing, ammonia losses from both the absorption and regeneration steps were quantified, and attempts were made to maintain steady state during operations. Implications of experimental results with respect to process design are discussed.

  3. Approximate Optimal Control of Affine Nonlinear Continuous-Time Systems Using Event-Sampled Neurodynamic Programming.

    Science.gov (United States)

    Sahoo, Avimanyu; Xu, Hao; Jagannathan, Sarangapani

    2017-03-01

    This paper presents an approximate optimal control of nonlinear continuous-time systems in affine form by using the adaptive dynamic programming (ADP) with event-sampled state and input vectors. The knowledge of the system dynamics is relaxed by using a neural network (NN) identifier with event-sampled inputs. The value function, which becomes an approximate solution to the Hamilton-Jacobi-Bellman equation, is generated by using event-sampled NN approximator. Subsequently, the NN identifier and the approximated value function are utilized to obtain the optimal control policy. Both the identifier and value function approximator weights are tuned only at the event-sampled instants leading to an aperiodic update scheme. A novel adaptive event sampling condition is designed to determine the sampling instants, such that the approximation accuracy and the stability are maintained. A positive lower bound on the minimum inter-sample time is guaranteed to avoid accumulation point, and the dependence of inter-sample time upon the NN weight estimates is analyzed. A local ultimate boundedness of the resulting nonlinear impulsive dynamical closed-loop system is shown. Finally, a numerical example is utilized to evaluate the performance of the near-optimal design. The net result is the design of an event-sampled ADP-based controller for nonlinear continuous-time systems.

  4. Closed-loop helium circulation system for actuation of a continuously operating heart catheter pump.

    Science.gov (United States)

    Karabegovic, Alen; Hinteregger, Markus; Janeczek, Christoph; Mohl, Werner; Gföhler, Margit

    2017-06-09

    Currently available, pneumatic-based medical devices are operated using closed-loop pulsatile or open continuous systems. Medical devices utilizing gases with a low atomic number in a continuous closed loop stream have not been documented to date. This work presents the construction of a portable helium circulation addressing the need for actuating a novel, pneumatically operated catheter pump. The design of its control system puts emphasis on the performance, safety and low running cost of the catheter pump. Static and dynamic characteristics of individual elements in the circulation are analyzed to ensure a proper operation of the system. The pneumatic circulation maximizes the working range of the drive unit inside the catheter pump while reducing the total size and noise production.Separate flow and pressure controllers position the turbine's working point into the stable region of the pressure creation element. A subsystem for rapid gas evacuation significantly decreases the duration of helium removal after a leak, reaching subatmospheric pressure in the intracorporeal catheter within several milliseconds. The system presented in the study offers an easy control of helium mass flow while ensuring stable behavior of its internal components.

  5. Oil extraction from Scenedesmus obliquus using a continuous microwave system--design, optimization, and quality characterization.

    Science.gov (United States)

    Balasubramanian, Sundar; Allen, James D; Kanitkar, Akanksha; Boldor, Dorin

    2011-02-01

    A 1.2 kW, 2450 MHz resonant continuous microwave processing system was designed and optimized for oil extraction from green algae (Scenedesmus obliquus). Algae-water suspension (1:1 w/w) was heated to 80 and 95°C, and subjected to extraction for up to 30 min. Maximum oil yield was achieved at 95°C and 30 min. The microwave system extracted 76-77% of total recoverable oil at 20-30 min and 95°C, compared to only 43-47% for water bath control. Extraction time and temperature had significant influence (pextraction yield. Oil analysis indicated that microwaves extracted oil containing higher percentages of unsaturated and essential fatty acids (indicating higher quality). This study validates for the first time the efficiency of a continuous microwave system for extraction of lipids from algae. Higher oil yields, faster extraction rates and superior oil quality demonstrate this system's feasibility for oil extraction from a variety of feedstock.

  6. A new system for continuous and remote monitoring of patients receiving home mechanical ventilation

    Science.gov (United States)

    Battista, L.

    2016-09-01

    Home mechanical ventilation is the treatment of patients with respiratory failure or insufficiency by means of a mechanical ventilator at a patient's home. In order to allow remote patient monitoring, several tele-monitoring systems have been introduced in the last few years. However, most of them usually do not allow real-time services, as they have their own proprietary communication protocol implemented and some ventilation parameters are not always measured. Moreover, they monitor only some breaths during the whole day, despite the fact that a patient's respiratory state may change continuously during the day. In order to reduce the above drawbacks, this work reports the development of a novel remote monitoring system for long-term, home-based ventilation therapy; the proposed system allows for continuous monitoring of the main physical quantities involved during home-care ventilation (e.g., differential pressure, volume, and air flow rate) and is developed in order to allow observations of different remote therapy units located in different places of a city, region, or country. The developed remote patient monitoring system is able to detect various clinical events (e.g., events of tube disconnection and sleep apnea events) and has been successfully tested by means of experimental tests carried out with pulmonary ventilators typically used to support sick patients.

  7. Regression analysis of the structure function for reliability evaluation of continuous-state system

    Energy Technology Data Exchange (ETDEWEB)

    Gamiz, M.L., E-mail: mgamiz@ugr.e [Departamento de Estadistica e I.O., Facultad de Ciencias, Universidad de Granada, Granada 18071 (Spain); Martinez Miranda, M.D. [Departamento de Estadistica e I.O., Facultad de Ciencias, Universidad de Granada, Granada 18071 (Spain)

    2010-02-15

    Technical systems are designed to perform an intended task with an admissible range of efficiency. According to this idea, it is permissible that the system runs among different levels of performance, in addition to complete failure and the perfect functioning one. As a consequence, reliability theory has evolved from binary-state systems to the most general case of continuous-state system, in which the state of the system changes over time through some interval on the real number line. In this context, obtaining an expression for the structure function becomes difficult, compared to the discrete case, with difficulty increasing as the number of components of the system increases. In this work, we propose a method to build a structure function for a continuum system by using multivariate nonparametric regression techniques, in which certain analytical restrictions on the variable of interest must be taken into account. Once the structure function is obtained, some reliability indices of the system are estimated. We illustrate our method via several numerical examples.

  8. Continuously rethinking the definition of influenza for surveillance systems: a Dependent Bayesian Expert System.

    Science.gov (United States)

    Alemi, Farrokh; Atherton, Martin J; Pattie, David C; Torii, Manabu

    2013-08-01

    In the Electronic Surveillance System for the Early Notification of Community-based Epidemics (ESSENCE), influenza was originally defined by a list of 29 and later by a list of 12 diagnosis codes. This article describes a dependent Bayesian procedure designed to improve the ESSENCE system and exploit multiple sources of information without being biased by redundancy. We obtained 13,096 cases within the Armed Forces Health Longitudinal Technological Application electronic medical records that included an influenza laboratory test. A Dependent Bayesian Expert System (D-BESt) was used to predict influenza from diagnoses, symptoms, reason for visit, temperature, month of visit, category of enrollment, and demographics. For each case, D-BESt sequentially selects the most discriminating piece of information, calculates its likelihood ratio conditioned on previously selected information, and updates the case's probability of influenza. When the analysis was limited to definitions based on diagnoses and was applied to a sample of patients for whom laboratory tests had been ordered, the areas under the receiver operating characteristic curve (AUCs) for the previous (29-diagnosis) and current (12-diagnosis) ESSENCE lists and the D-BESt algorithm were, respectively, 0.47, 0.36, and 0.77. Including other sources of information further improved the AUC for D-BESt to 0.79. At the best cutoff point for D-BESt, where the receiver operating characteristic curve for D-BESt is farthest from the diagonal line, the D-BESt algorithm correctly classified 84% of cases (specificity = 88%, sensitivity = 62%). In comparison, the current ESSENCE approach of using a list of 12 diagnoses correctly classified only 31% of this sample of cases (specificity = 29%, sensitivity = 42%). False alarms in ESSENCE surveillance systems can be reduced if a probabilistic dynamic learning system is used.

  9. Convenient and Simple Esterification in Continuous-Flow Systems using g-DMAP.

    Science.gov (United States)

    Okuno, Yoshinori; Isomura, Shigeki; Sugamata, Anna; Tamahori, Kaoru; Fukuhara, Ami; Kashiwagi, Miyu; Kitagawa, Yuuichi; Kasai, Emiri; Takeda, Kazuyoshi

    2015-11-01

    The utility and applicability of polyethylene-g-polyacrylic acid-immobilized dimethylaminopyridine (g-DMAP) as a catalyst in a continuous-flow system were investigated for decarboxylative esterification. High catalytic activity toward acylation was provided by g-DMAP containing a flexible grafted-polymer structure. During decarboxylation, carboxylic acids and alcohols were converted cleanly using di-tert-butyl dicarbonate (Boc2O) as a coupling reagent, which reduced by-products. In addition, the use of Boc2O resulted in the formation of tert-butyl esters. These esterifications dramatically reduced the reaction time under continuous-flow conditions, with a residence time of approximately 2 min. This highly efficient esterification procedure will provide more practical industrial applications.

  10. Continually Answering Constraint k-NN Queries in Unstructured P2P Systems

    Institute of Scientific and Technical Information of China (English)

    Bin Wang; Xiao-Chun Yang; Guo-Ren Wang; Ge Yu; Lei Chen; X. Sean Wang,; Xue-Min Lin

    2008-01-01

    We consider the problem of efficiently computing distributed geographical k-NN queries in an unstructured peer-to-peer (P2P) system, in which each peer is managed by an individual organization and can only communicate with its logical neighboring peers. Such queries are based on local filter query statistics, and require as less communication cost as possible, which makes it more difficult than the existing distributed k-NN queries. Especially, we hope to reduce candidate peers and degrade communication cost. In this paper, we propose an efficient pruning technique to minimize the number of candidate peers to be processed to answer the k-Nnqueries. Our approach is especially suitable for continuous k-Nnqueries when updating peers, including changing ranges of peers, dynamically leaving or joining peers, and updating data in a peer.In addition, simulation results show that the proposed approach outperforms the existing Minimum Bounding Rectangle (MBR)-based query approaches, especially for continuous queries.

  11. Computer simulations for intense continuous beam transport in electrostatic lens systems

    Institute of Scientific and Technical Information of China (English)

    ZHAO Xiao-Song; L(U) Jian-Qin

    2008-01-01

    A code LEADS based on the Lie algebraic analysis for the continuous beam dynamics with space charge effect in beam transport has been developed.The program is used for the simulations of axial-symmetric and unsymmetricalintense continuous beam in the channels including drift spaces.electrostatic lenses and DC electrostatic accelerating tubes.In order to get the accuracy required,all elements are divided into many small segments,and the electric field in the segments is regarded as uniform field,and the dividing points are treated as thin lenses.Iteration procedures are adopted in the program to obtain self-consistent solutions.The code can be used in the designs of low energy beam transport systems,electrostatic accelerators and ion implantation machines.

  12. Low-Power Wearable Systems for Continuous Monitoring of Environment and Health for Chronic Respiratory Disease.

    Science.gov (United States)

    Dieffenderfer, James; Goodell, Henry; Mills, Steven; McKnight, Michael; Yao, Shanshan; Lin, Feiyan; Beppler, Eric; Bent, Brinnae; Lee, Bongmook; Misra, Veena; Zhu, Yong; Oralkan, Omer; Strohmaier, Jason; Muth, John; Peden, David; Bozkurt, Alper

    2016-09-01

    We present our efforts toward enabling a wearable sensor system that allows for the correlation of individual environmental exposures with physiologic and subsequent adverse health responses. This system will permit a better understanding of the impact of increased ozone levels and other pollutants on chronic asthma conditions. We discuss the inefficiency of existing commercial off-the-shelf components to achieve continuous monitoring and our system-level and nano-enabled efforts toward improving the wearability and power consumption. Our system consists of a wristband, a chest patch, and a handheld spirometer. We describe our preliminary efforts to achieve a submilliwatt system ultimately powered by the energy harvested from thermal radiation and motion of the body with the primary contributions being an ultralow-power ozone sensor, an volatile organic compounds sensor, spirometer, and the integration of these and other sensors in a multimodal sensing platform. The measured environmental parameters include ambient ozone concentration, temperature, and relative humidity. Our array of sensors also assesses heart rate via photoplethysmography and electrocardiography, respiratory rate via photoplethysmography, skin impedance, three-axis acceleration, wheezing via a microphone, and expiratory airflow. The sensors on the wristband, chest patch, and spirometer consume 0.83, 0.96, and 0.01 mW, respectively. The data from each sensor are continually streamed to a peripheral data aggregation device and are subsequently transferred to a dedicated server for cloud storage. Future work includes reducing the power consumption of the system-on-chip including radio to reduce the entirety of each described system in the submilliwatt range.

  13. Carência de atenção à saúde ocular no setor público: um estudo de base populacional Shortage of ocular health care in the public system: a population-based study

    Directory of Open Access Journals (Sweden)

    Victor Delpizzo Castagno

    2009-10-01

    Full Text Available Este estudo transversal de base populacional investigou a prevalência de utilização de serviços de saúde ocular e sua associação com fatores sócio-demográficos, necessidades em saúde e forma de financiamento da consulta. Avaliaram-se 2.960 indivíduos de 20 anos ou mais. Nos últimos cinco anos, 46% dos entrevistados e 30% daqueles com 50 anos ou mais não consultaram para os olhos. Dos que consultaram, 18% foram em óticas, e apenas 17% foram no setor público. O principal motivo foi não enxergar bem (69,5%. Falta de dinheiro (29% e de tempo (24,6% foram os principais motivos para ter deixado de consultar. Idade, escolaridade e nível econômico estiveram diretamente associados com ter consultado nos últimos cinco anos. Ser mulher, ter catarata, glaucoma e usar correção, bem como consultar no setor privado também estiveram positivamente associados com o desfecho. É preciso não só aumentar a participação do setor público, integrando a saúde ocular a todos os níveis de atenção, ampliando a participação de outros profissionais de saúde, como também intensificar o rastreamento de problemas oculares e a sua prevenção.This cross-sectional population-based study investigated the prevalence of eye care services utilization and the association with socioeconomic and demographic factors, need for health care, and type of service payment. The study evaluated 2,960 adults aged 20 and older. In the previous 5 years, 46% of the sample and 30% of those aged 50 and older had not visited an eye care service. Among the persons who used a service, 18% went to an optical store and only 17% used the public health system. The main reason for using eye care services was poor vision (69.5%. Lack of money (29% and time (24.6% were the most frequently cited reasons for non-utilization. Age, education, and economic status were directly associated with the outcome. Female gender, cataract, glaucoma, prescription eyewear, and private

  14. Plasma-mediated inactivation of Pseudomonas aeruginosa biofilms grown on borosilicate surfaces under continuous culture system.

    Directory of Open Access Journals (Sweden)

    Kurt G Vandervoort

    Full Text Available Biofilms are microbial communities attached to a surface and embedded in a matrix composed of exopolysaccharides and excreted nucleic acids. Bacterial biofilms are responsible for undesirable effects such as disease, prostheses colonization, biofouling, equipment damage, and pipe plugging. Biofilms are also more resilient than free-living cells to regular sterilization methods and therefore it is indispensable to develop better ways to control and remove them. The use of gas discharge plasmas is a good alternative since plasmas contain a mixture of reactive agents well-known for their decontamination potential against free microorganisms. We have previously reported that Pseudomonas aeruginosa biofilms were inactivated after a 1-min plasma exposure. We determined that the adhesiveness and the thickness of Pseudomonas biofilms grown on borosilicate were reduced. We also reported sequential morphological changes and loss of viability upon plasma treatment. However, the studies were carried out in batch cultures. The use of a continuous culture results in a more homogenous environment ensuring reproducible biofilm growth. The aim of this work was to study plasma-mediated inactivation of P. aeruginosa biofilms grown on borosilicate in a continuous culture system. In this paper we show that biofilms grown on glass under continuous culture can be inactivated by using gas discharge plasma. Both biofilm architecture and cell culturability are impacted by the plasma treatment. The inactivation kinetics is similar to previously described ones and cells go through sequential changes ranging from minimal modification without loss of viability at short plasma exposure times, to major structure and viability loss at longer exposure times. We report that changes in biofilm structure leading to the loss of culturability and viability are related to a decrease of the biofilm matrix adhesiveness. To our knowledge, there has been no attempt to evaluate the

  15. Plasma-mediated inactivation of Pseudomonas aeruginosa biofilms grown on borosilicate surfaces under continuous culture system.

    Science.gov (United States)

    Vandervoort, Kurt G; Brelles-Mariño, Graciela

    2014-01-01

    Biofilms are microbial communities attached to a surface and embedded in a matrix composed of exopolysaccharides and excreted nucleic acids. Bacterial biofilms are responsible for undesirable effects such as disease, prostheses colonization, biofouling, equipment damage, and pipe plugging. Biofilms are also more resilient than free-living cells to regular sterilization methods and therefore it is indispensable to develop better ways to control and remove them. The use of gas discharge plasmas is a good alternative since plasmas contain a mixture of reactive agents well-known for their decontamination potential against free microorganisms. We have previously reported that Pseudomonas aeruginosa biofilms were inactivated after a 1-min plasma exposure. We determined that the adhesiveness and the thickness of Pseudomonas biofilms grown on borosilicate were reduced. We also reported sequential morphological changes and loss of viability upon plasma treatment. However, the studies were carried out in batch cultures. The use of a continuous culture results in a more homogenous environment ensuring reproducible biofilm growth. The aim of this work was to study plasma-mediated inactivation of P. aeruginosa biofilms grown on borosilicate in a continuous culture system. In this paper we show that biofilms grown on glass under continuous culture can be inactivated by using gas discharge plasma. Both biofilm architecture and cell culturability are impacted by the plasma treatment. The inactivation kinetics is similar to previously described ones and cells go through sequential changes ranging from minimal modification without loss of viability at short plasma exposure times, to major structure and viability loss at longer exposure times. We report that changes in biofilm structure leading to the loss of culturability and viability are related to a decrease of the biofilm matrix adhesiveness. To our knowledge, there has been no attempt to evaluate the inactivation

  16. Cartão Nacional de Saúde: os desafios da concepção e implantação de um sistema nacional de captura de informações de atendimento em saúde National Health Card: the implementation and conception challenges of a national system used to extract information from health services

    Directory of Open Access Journals (Sweden)

    Rosani Evangelista da Cunha

    2002-01-01

    Full Text Available O Cartão Nacional de Saúde, em implantação sob a forma de projeto piloto, utiliza tecnologias de informática para a captura de informações de atendimento em saúde. O desenvolvimento do sistema e as estratégias utilizadas para sua implantação têm sido pautados por princípios que levaram a opções tecnológicas específicas. Merecem destaque: a o porte do cartão não é condição para acesso aos serviços de saúde; b o acesso às informações deve respeitar o direito à privacidade dos usuários e a ética dos profissionais; c a responsabilidade pela guarda da base de dados é dos gestores do SUS; d adoção de padrões, preferencialmente abertos; e e respeito ao processo de trabalho e às funcionalidades requeridas no ato do atendimento. Cerca de 13 milhões de pessoas são abrangidas de forma direta pelo projeto piloto, que teve origem em meados de 1999 por meio de uma licitação internacional para contratação da Solução de Informática do Cartão Nacional de Saúde. Com pouco mais de três anos de duração e previsão de término do projeto piloto para julho de 2003, o Cartão apresenta características e desafios próprios de projetos complexos, que são discutidos no presente artigo.The National Health Card, currently implemented as a pilot project collects health encounter data at the point of care, allowing for the construction of the national repository of clinical data and the retrieval of information and knowledge to support health care policy makers in their daily decisions. The development of the system, and the strategies used in its implementation are based in principles that lead to specific technological options; among these, the following should be mentioned: a the possession of the card is not a condition to access the health services; b the access to information respects the user's privacy and confidentiality and the code ethics of each health professional category; (c SUS staff is responsible for

  17. Avaliação continuada da educação permanente na atenção à criança na estratégia saúde da família Continuous evaluation of permanent education concerning child care as part of the family health strategy

    Directory of Open Access Journals (Sweden)

    Katia Virginia de Oliveira Feliciano

    2008-03-01

    Full Text Available Este artigo apresenta a avaliação continuada do trabalho realizado e os resultados que podem ser atribuídos à educação permanente na atenção à criança, desenvolvida junto às equipes de saúde da família, com gerência compartilhada pelo Programa de Extensão Comunitária do Instituto Materno Infantil Prof. Fernando Figueira (IMIP, e Secretarias Municipais de Saúde do Recife e Olinda, em Pernambuco, Brasil. Com apoio de consultores externos, o grupo executor realizou reflexão crítica sistemática, orientada pelas categorias desempenho, efeitos e efetividade, visando aprimorar o trabalho em seu decorrer. As fontes de informação foram os registros diários do grupo e das equipes e as percepções sobre o trabalho. Apesar da dificuldade de transformar em rotina as mudanças alcançadas, a educação permanente tem qualificado a atenção à criança. A satisfação das equipes reforça o sentimento de sua fecundidade e operacionalidade.This article presents a continuous evaluation of work involving permanent education regarding childcare and the results that can be attributed to it, as carried out by family health teams managed jointly by the Community Outreach Program of the Instituto Materno Infantil Prof. Fernando Figueira, IMIP and the Municipal Departments of Health of the city Recife and the city of Olinda, State of Pernambuco, Brazil. With the support of external consultants, the group carried out systematic critical reflection, organized around the categories of performance, effects and effectiveness, with a view to enhancing the work under way. The sources of information used were the daily registers of the group and the teams and their views regarding the work. Despite the difficulty of transforming the changes brought about into routines, continuous education seems to have improved the quality of childcare. The satisfaction the teams feel corroborates this feeling that this work is both feasible and productive.

  18. The split system approach to managing time in simulations of hybrid systems having continuous and discrete event components

    Energy Technology Data Exchange (ETDEWEB)

    Nutaro, James J. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Kuruganti, Phani Teja [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Protopopescu, Vladimir A. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Shankar, Mallikarjun [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

    2012-02-08

    The efficient and accurate management of time in simulations of hybrid models is an outstanding engineering problem. General a priori knowledge about the dynamic behavior of the hybrid system (i.e. essentially continuous, essentially discrete, or 'truly hybrid') facilitates this task. Indeed, for essentially discrete and essentially continuous systems, existing software packages can be conveniently used to perform quite sophisticated and satisfactory simulations. The situation is different for 'truly hybrid' systems, for which direct application of existing software packages results in a lengthy design process, cumbersome software assemblies, inaccurate results, or some combination of these independent of the designer's a priori knowledge about the system's structure and behavior. The main goal of this paper is to provide a methodology whereby simulation designers can use a priori knowledge about the hybrid model's structure to build a straightforward, efficient, and accurate simulator with existing software packages. The proposed methodology is based on a formal decomposition and re-articulation of the hybrid system; this is the main theoretical result of the paper. To set the result in the right perspective, we briefly review the essentially continuous and essentially discrete approaches, which are illustrated with typical examples. Then we present our new, split system approach, first in a general formal context, then in three more specific guises that reflect the viewpoints of three main communities of hybrid system researchers and practitioners. For each of these variants we indicate an implementation path. Our approach is illustrated with an archetypal problem of power grid control.

  19. Controllability discrepancy and irreducibility/reducibility of Floquet factorisations in linear continuous-time periodic systems

    Science.gov (United States)

    Zhou, Jun; Lu, Xinbiao; Qian, Huimin

    2016-09-01

    The paper reports interesting but unnoticed facts about irreducibility (resp., reducibility) of Flouqet factorisations and their harmonic implication in term of controllability in finite-dimensional linear continuous-time periodic (FDLCP) systems. Reducibility and irreducibility are attributed to matrix logarithm algorithms during computing Floquet factorisations in FDLCP systems, which are a pair of essential features but remain unnoticed in the Floquet theory so far. The study reveals that reducible Floquet factorisations may bring in harmonic waves variance into the Fourier analysis of FDLCP systems that in turn may alter our interpretation of controllability when the Floquet factors are used separately during controllability testing; namely, controllability interpretation discrepancy (or simply, controllability discrepancy) may occur and must be examined whenever reducible Floquet factorisations are involved. On the contrary, when irreducible Floquet factorisations are employed, controllability interpretation discrepancy can be avoided. Examples are included to illustrate such observations.

  20. A guidance and navigation system for continuous low-thrust vehicles. M.S. Thesis

    Science.gov (United States)

    Jack-Chingtse, C.

    1973-01-01

    A midcourse guidance and navigation system for continuous low thrust vehicles was developed. The equinoctial elements are the state variables. Uncertainties are modelled statistically by random vector and stochastic processes. The motion of the vehicle and the measurements are described by nonlinear stochastic differential and difference equations respectively. A minimum time trajectory is defined; equations of motion and measurements are linearized about this trajectory. An exponential cost criterion is constructed and a linear feedback quidance law is derived. An extended Kalman filter is used for state estimation. A short mission using this system is simulated. It is indicated that this system is efficient for short missions, but longer missions require accurate trajectory and ground based measurements.

  1. A guidance and navigation system for continuous low thrust vehicles. M.S. Thesis

    Science.gov (United States)

    Tse, C. J. C.

    1973-01-01

    A midcourse guidance and navigation system for continuous low thrust vehicles is described. A set of orbit elements, known as the equinoctial elements, are selected as the state variables. The uncertainties are modelled statistically by random vector and stochastic processes. The motion of the vehicle and the measurements are described by nonlinear stochastic differential and difference equations respectively. A minimum time nominal trajectory is defined and the equation of motion and the measurement equation are linearized about this nominal trajectory. An exponential cost criterion is constructed and a linear feedback guidance law is derived to control the thrusting direction of the engine. Using this guidance law, the vehicle will fly in a trajectory neighboring the nominal trajectory. The extended Kalman filter is used for state estimation. Finally a short mission using this system is simulated. The results indicate that this system is very efficient for short missions.

  2. Suboptimal reliable guaranteed cost control for continuous-time systems with multi-criterion constraints

    Institute of Scientific and Technical Information of China (English)

    Deng-feng ZHANG; Hong-ye SU; Jian CHU; Zhi-quan WANG

    2008-01-01

    The suboptimal reliable guaranteed cost control (RGCC) with multi-criterion constraints is investigated for a class of uncertain continuous-time systems with sensor faults.A fault model in sensors,which considers outage or partial degradation of sensors,is adopted.The influence of the disturbance on the quadratic stability of the closed-loop systems is analyzed.The reliable state-feedback controller is developed by a linear matrix inequalities (LMIs) approach,to minimize the upper bound of a quadratic cost function under the conditions that all the closed-loop poles be placed in a specified disk,and that the prescribed level of H∞ disturbance attenuation and the upper bound constraints of control inputs' magnitudes be guaranteed.Thus,with the above multi-criterion constraints,the resulting closed-loop system can provide satisfactory stability,transient property,a disturbance rejection level and mininaized quadratic cost performance despite possible sensor faults.

  3. On Existence of $L^2$-solutions of Coupled Boltzmann Continuous Slowing Down Transport Equation System

    CERN Document Server

    Tervo, J; Frank, M; Herty, M

    2016-01-01

    The paper considers a coupled system of linear Boltzmann transport equation (BTE), and its Continuous Slowing Down Approximation (CSDA). This system can be used to model the relevant transport of particles used e.g. in dose calculation in radiation therapy. The evolution of charged particles (e.g. electrons and positrons) are in practice often modelled using the CSDA version of BTE because of the so-called forward peakedness of scattering events contributing to the particle fluencies (or particle densities), which causes severe problems for numerical methods. First, we prove the existence and uniqueness of solutions, under sufficient criteria and in appropriate $L^2$-based spaces, of a single (particle) CSDA-equation by using two complementary techniques, the Lions-Lax-Milgram Theorem (variational approach), and the theory evolution operators (semigroup approach). The necessary a priori estimates are shown. In addition, we prove the corresponding results and estimates for the system of coupled transport equat...

  4. Development of a new antithrombogenic continuous ultrafiltration system (ACUS) and its clinical evaluation.

    Science.gov (United States)

    Arakawa, M; Suzuki, Y; Nagao, M; Aoike, I; Koda, Y; Terada, R; Kunitomo, T

    1991-01-01

    A new totally antithrombogenic continuous ultrafiltration system (ACUS), consisting of polyacrylonitrile-polyethyleneoxide (PAN-PEO) membrane and ionically heparin-bound catheter, tubing, and module header was designed and its performance was confirmed through animal experiments and clinical evaluation. Animal experiments revealed that persistent antithrombogenicity and maintained ultrafiltration without systemic heparinisation were observed only when the three major parts--i.e. (1) the catheter and tubing, (2) the header part of a haemofilter module, and (3) the fibre membrane--were all antithrombogenic and connected to each other without uneven structures. ACUS was clinically applied to 15 oliguric patients with various severe conditions. We found that one filter could function for approximately 26 h without systemic anticoagulation, even in the presence of low blood pressure, and that ACUS did not change platelet function. Thus, ACUS seems to be very suitable for the management of volume overload, especially in patients with severe circulatory problems or bleeding tendencies.

  5. The Stabilization of Continuous-Time Networked Control Systems with Data Drift

    Directory of Open Access Journals (Sweden)

    Qixin Zhu

    2015-01-01

    Full Text Available By data drift, we mean the data received by the controller may be different from that sent by the sensor, or the data received by actuator may be different from that sent by the controller. The issues of guaranteed cost control for a class of continuous-time networked control systems with data drift are investigated. Firstly, with the consideration of data drift between sensor and controller, a closed-loop model of networked control systems including network factors such as time-delay and data-dropouts is established. And then, selecting an appropriate Lyapunov function, a guaranteed cost controller in terms of linear matrix inequality (LMI is designed to asymptotically stabilize the networked control system with data drift. Finally, simulations are included to demonstrate the theoretical results.

  6. IMPROVED ROBUST H-INFINITY ESTIMATION FOR UNCERTAIN CONTINUOUS-TIME SYSTEMS

    Institute of Scientific and Technical Information of China (English)

    Aiguo WU; Huafeng DONG; Guangren DUAN

    2007-01-01

    The design of full-order robust estimators is investigated for continuous-time polytopic uncertain systems. The main purpose is to obtain a stable linear estimator such that the estimation error system remains robustly stable with a prescribed H∞ attenuation level. Firstly, a simple alterna- tive proof is given for an improved LMI representation of H∞ performance proposed recently. Based on the performance criterion which keeps the Lyapunov matrix out of the product of the system dynamic matrices, a sufficient condition for the existence of the robust estimator is provided in terms oflinear matrix inequalities. It is shown that the proposed design strategy allows the use of parameter-dependent Lyapunov functions and hence it is less conservative than the earlier results. A numericalexample is employed to illustrate the feasibility and advantage of the proposed design.

  7. Robust H-infinity estimation for continuous-time polytopic uncertain systems

    Institute of Scientific and Technical Information of China (English)

    Aiguo WU; Guangren DUAN

    2005-01-01

    The design of full-order robust H-infinity estimators is investigated for continuous-time polytopic uncertain systems. The main purpose is to obtain a stable and proper linear estimator such that the estimation error system remains robustly stable with a prescribed H-infinity attenuation level. Based on a recently proposed H-infinity performance criterion which exhibits a kind of decoupling between the Lyapunov matrix and the system dynamic matrices, a sufficient condition for the existence of the robust estimator is provided in terms of linear matrix inequalities. It is shown that the proposed design strategy allows the use of parameter-dependent Lyapunov functions and hence it is less conservative than earlier results. A numerical example is employed to illustrate the feasibility and advantage of the proposed design.

  8. An Event-Based Approach to Distributed Diagnosis of Continuous Systems

    Science.gov (United States)

    Daigle, Matthew; Roychoudhurry, Indranil; Biswas, Gautam; Koutsoukos, Xenofon

    2010-01-01

    Distributed fault diagnosis solutions are becoming necessary due to the complexity of modern engineering systems, and the advent of smart sensors and computing elements. This paper presents a novel event-based approach for distributed diagnosis of abrupt parametric faults in continuous systems, based on a qualitative abstraction of measurement deviations from the nominal behavior. We systematically derive dynamic fault signatures expressed as event-based fault models. We develop a distributed diagnoser design algorithm that uses these models for designing local event-based diagnosers based on global diagnosability analysis. The local diagnosers each generate globally correct diagnosis results locally, without a centralized coordinator, and by communicating a minimal number of measurements between themselves. The proposed approach is applied to a multi-tank system, and results demonstrate a marked improvement in scalability compared to a centralized approach.

  9. Novel textile systems for the continuous monitoring of vital signals: design and characterization.

    Science.gov (United States)

    Trindade, Isabel G; Martins, Frederico; Dias, Rúben; Oliveira, Cristina; Machado da Silva, José

    2015-08-01

    In this article we present a smart textile system for the continuous monitoring of cardiorespiratory signals, produced and integrated with an industrial embroidery unit. The design of a T-shirt system, having embedded textile sensors and interconnects and custom designed circuit for data collection and Bluetooth transmission is presented. The performance of skin-contact textile electrodes, having distinctive electrical characteristics and surface morphologies, was characterized by measurements of signal to noise ratio, under dry and moisture conditions. The influence of the electrodes size and the wear resistance were addressed. Results of an electrocardiogram acquisition with a subject wearing the T-shirt and display on a smartphone are also shown. The presented smart textile systems exhibit good performance and versatility for custom demand production.

  10. Enhanced H∞ Filtering for Continuous-time State-delayed Systems

    Institute of Scientific and Technical Information of China (English)

    Ying Zhang; Ai-Guo Wu; Guang-Ren Duan

    2009-01-01

    The H∞ filtering problem for continuous-time polytopic uncertain time-delay systems is investigated. Attention is focused on the design of full-order filters guaranteeing a prescribed H∞ attenuation level for the filtering error system. First, a simple alternative proof is given for an improved linear matrix inequality (LMI) representation of H∞ performance. Then, based on the performance criterion which kecps Lyapunov matrices out of the product of system dynamic matrices, a sufficient condition for the existence of robust estimators is formulated in terms of LMIs, and the corresponding filter design is cast into a convcx optimization problem which can be efficiently handled by using standard numerical algorithms. It is shown that the proposed design strategy allows the use of parameter-dependent Lyapunov functions and hence it is less conservative than some earlier results. A numerical example is employed to demonstrate the feasibility and advantage of the proposed design.

  11. Encoding Performance of Orthogonal Space-Time Coded Continuous Phase Modulation System

    Directory of Open Access Journals (Sweden)

    Wenli Shen

    2013-05-01

    Full Text Available The orthogonal space-time coded continuous phase modulation (OST-CPM system shows attractive performance over fading MIMO channels. In this paper, the Chernoff bound on pair-wise error probability (PWEP is studied for two transmit antennas over spatially correlated quasi-static Rayleigh-fading channel. The maximum likelihood sequence detection (MLSD algorithm is applied to the OST-CPM system. Approximate bound for high signal-to-noise ratio (SNR is derived to evaluate the encoding performance in correlated channel. The effects of correlation coefficient matrices on the coding performance are simulated. Both analytical and simulation results show that the coding performance of this system decreases as the fading coefficients between the antennas increases. And the penalty on the coding performance increases a lot in fully correlated channel.

  12. A detection system for charged-particle decay studies with a continuous-implantation method

    Energy Technology Data Exchange (ETDEWEB)

    Sun, L.J. [China Institute of Atomic Energy, Beijing 102413 (China); Xu, X.X., E-mail: xuxinxing@ciae.ac.cn [China Institute of Atomic Energy, Beijing 102413 (China); Lin, C.J., E-mail: cjlin@ciae.ac.cn [China Institute of Atomic Energy, Beijing 102413 (China); Wang, J.S. [Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000 (China); Fang, D.Q. [Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800 (China); Li, Z.H. [School of Physic and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871 (China); Wang, Y.T. [Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800 (China); Li, J. [School of Physic and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871 (China); Yang, L.; Ma, N.R. [China Institute of Atomic Energy, Beijing 102413 (China); Wang, K. [Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800 (China); Zang, H.L. [School of Physic and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871 (China); Wang, H.W.; Li, C.; Shi, C.Z.; Nie, M.W.; Li, X.F.; Li, H. [Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800 (China); Ma, J.B.; Ma, P. [Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000 (China); and others

    2015-12-21

    A new detection system with high detection efficiency and low detection threshold has been developed for charged-particle decay studies, including β-delayed proton, α decay or direct proton emission from proton-rich nuclei. The performance was evaluated by using the β-delayed proton emitter {sup 24}Si produced by projectile fragmentation at the First Radioactive Ion Beam Line in Lanzhou. Under a continuous-beam mode, the isotopes of interest were implanted into two double-sided silicon strip detectors, where the subsequent decays were measured and correlated to the preceding implantations by using position and time information. The system allows us to measure protons with energies down to about 200 keV without obvious β background in the proton spectrum. Further application of the detection system can be extended to the measurements of β-delayed proton decay and the direct proton emission of more exotic proton-rich nuclei.

  13. An Automated and Continuous Plant Weight Measurement System for Plant Factory

    Science.gov (United States)

    Chen, Wei-Tai; Yeh, Yu-Hui F.; Liu, Ting-Yu; Lin, Ta-Te

    2016-01-01

    In plant factories, plants are usually cultivated in nutrient solution under a controllable environment. Plant quality and growth are closely monitored and precisely controlled. For plant growth evaluation, plant weight is an important and commonly used indicator. Traditional plant weight measurements are destructive and laborious. In order to measure and record the plant weight during plant growth, an automated measurement system was designed and developed herein. The weight measurement system comprises a weight measurement device and an imaging system. The weight measurement device consists of a top disk, a bottom disk, a plant holder and a load cell. The load cell with a resolution of 0.1 g converts the plant weight on the plant holder disk to an analog electrical signal for a precise measurement. The top disk and bottom disk are designed to be durable for different plant sizes, so plant weight can be measured continuously throughout the whole growth period, without hindering plant growth. The results show that plant weights measured by the weight measurement device are highly correlated with the weights estimated by the stereo-vision imaging system; hence, plant weight can be measured by either method. The weight growth of selected vegetables growing in the National Taiwan University plant factory were monitored and measured using our automated plant growth weight measurement system. The experimental results demonstrate the functionality, stability and durability of this system. The information gathered by this weight system can be valuable and beneficial for hydroponic plants monitoring research and agricultural research applications. PMID:27066040

  14. Planejamento em Saúde

    Directory of Open Access Journals (Sweden)

    Antonio José Costa CARDOSO

    2014-03-01

    Full Text Available Esse texto pretendeu subsidiar aula sobre Planejamento e Avaliação em Saúde para os Analistas Técnicos de Políticas Sociais lotados no Ministério da Saúde (MS, na perspectiva de promover uma maior compreensão dos antecedentes históricos do planejamento em saúde no Brasil e na América Latina, do referencial teórico metodológico do planejamento estratégico e participativo, e refletir sobre os avanços e desafios que se apresentam no atual contexto de construção do Sistema Único de Saúde (SUS. Neste sentido, foi estruturado na perspectiva de responder a três questões orientadoras: 1 Como tem se dado esse processo de coordenação do Planejamento Estratégico Nacional no âmbito do SUS, em cooperação técnica com os Estados, Municípios e Distrito Federal? 2 Quais são as tecnologias de gestão e planejamento em saúde adotadas pelo MS para conduzir esses processos de forma integrada? 3 Como se dá o gerenciamento das ações no MS? Como os planos, projetos e programas são monitorados pelas equipes responsáveis?

  15. Análise sobre a fitoterapia como prática integrativa no Sistema Único de Saúde Analysis about phytotherapy as an integrating practice in the Brazilian Unified Health System (UHS

    Directory of Open Access Journals (Sweden)

    R.L. Santos

    2011-01-01

    profissionais e estudantes da saúde, auxiliando e tornando mais sólidas as bases de segurança e eficácia para implementação das praticas fitoterápicas no SUS.The growing use of phytotherapy as an integrating medical practice in several countries has been remarkable. The use of medicinal plants in Brazil is facilitated by the plant diversity and low cost associated with therapeutics, which has called the attention of health assistance programs and professionals. The Brazilian Ministry of Health, in order to avoid misuse of this medical practice, has demonstrated interest, developing policies that encourage research related to this issue and favoring the establishment of health programs focused on the distribution and use of these drugs in a rational way. Based on this context, a survey about how this issue has been addressed and implemented in the Unified Health System (UHS was carried out. This was a descriptive study of qualitative approach, performed through a literature review in databases, related to the theme "phytotherapic medicines in the unified health system". The key words used throughout the study were: phytotherapy, phytomedicines, integrating medicine, medicines, herbal medicine, phytotherapy in the UHS, integrating medicine and public health systems. The government has shown interest in developing policies which combine technological advances with common knowledge for the sake of assistance health procedures that show effectiveness, coverage, humanization and less dependence on the pharmaceutical industry. In the last two decades, some Brazilian states and municipalities have implemented Phytotherapy Programs in primary health care in order to meet the drug needs of their communities. Despite the growing search for integrating drugs, studies about phytotherapy are still limited in Brazil, with the need of research in this area in order to increase the knowledge of health professionals and students, helping and making more solid the safety and efficacy bases

  16. Compound Control Strategy for MDF Continuous Hot Pressing Electrohydraulic Servo System with Uncertainties and Input Saturation

    Directory of Open Access Journals (Sweden)

    Zhu Liang-kuan

    2016-01-01

    Full Text Available A compound control strategy is investigated for Medium Density Fiberboard (MDF continuous hot pressing electrohydraulic servo system (EHSS with uncertainties and input saturation. Firstly, a hyperbolic tangent function is applied to approximate saturation nonlinearity in the system. And thus the mathematical model is continuous and differentiable. Subsequently, the slab thickness tracking controller is constructed by using a dynamic surface control (DSC method, which introduces first-order low-pass filters to calculate derivatives of virtual control input in each step. Compared with the conventional backstepping controller, complexity of the design procedure is alleviated obviously. Moreover, a composite disturbance of uncertainties and input saturation is estimated by a nonlinear disturbance observer for compensation of the control law. Finally, an appropriate Lyapunov function is chosen to prove that all signals of the closed-loop system are semiglobally uniformly ultimately bounded and the tracking error converges to zero asymptotically. Numerical simulation results are also exhibited to authenticate and validate the benefits of the proposed control scheme.

  17. Theories and experiments on the stiffening effect of high-frequency excitation for continuous elastic systems

    Science.gov (United States)

    Thomsen, J. J.

    2003-02-01

    One effect of strong mechanical high-frequency excitation may be to apparently "stiffen" a structure, a well-described phenomenon for discrete systems. The present study provides theoretical and experimental results on this effect for continuous elastic structures. A laboratory experiment is set up for demonstrating and measuring the stiffening effect in a simple setting, in the form of a horizontal piano string subjected to longitudinal high-frequency excitation at the clamped base and free at the other end. A simplest possible theoretical model is set up and analyzed using a hierarchy of three approximating theories, each providing valuable insight. One of these is capable of predicting the vertical string lift due to stiffening in terms of simple expressions, with results that agree very well with experimental measurements for a wide range of conditions. It appears that resonance effects cannot be ignored, as was done in a few related studies—unless the system has very low modal density or heavy damping; thus first-order consideration to resonance effects is included. Using the specific example with experimental support to put confidence on the proposed theory, expressions for predicting the stiffening effect for a more general class of continuous systems in differential operator form are also provided.

  18. Efficiency of Blenke cascade system for continuous bio-ethanol fermentation.

    Science.gov (United States)

    Ntihuga, Jean Nepomuscene; Senn, Thomas; Gschwind, Peter; Kohlus, Reinhard

    2012-11-01

    A gas lift-system with inserts (so-called Blenke cascade system) for continuous bio-ethanol fermentation was constructed. Gas introduced at the bottom of the column created toroidal vortices in the fluid cells between inserts, enhancing mixing and improving residence time behavior without stirring equipment being necessary. The parameters mash type, start-up strategy, yeast-recycle model and yeast separation were studied concerning the efficiency of the ethanol production. The best results obtained were for a filtered mash, a double saccharification principle (DSP), a batch start-up strategy, an activation-recycle model and a lamella settler connected in series with a small conventional gravitational settler for yeast cells separation. Using this system, the fermentation residence time was τ=4-5.5h, depending on substrate type. Eighty five percent of the yeast cells could be separated. High volumetric ethanol productivity (Q(p)=20.43g/Lh) and yield E(y)=98% were achieved. Continuous fermentation, yeast recycling and sedimentation were contamination-free processes.

  19. Análise de impacto do stent farmacológico no orçamento do sistema único de saúde Impact analysis of drug-eluting stent in the unified health system budget

    Directory of Open Access Journals (Sweden)

    Denizar Vianna Araújo

    2007-04-01

    Full Text Available FUNDAMENTO: Stents farmacológicos representam opção adicional para o tratamento da doença arterial coronariana. Essa tecnologia representa importante inovação, para a qual pode ser necessário financiamento adicional, no curto prazo, para permitir incorporação no Sistema Único de Saúde brasileiro. OBJETIVOS: Estimar o impacto da incorporação do stent farmacológico no orçamento do Sistema Único de Saúde, no primeiro ano de utilização. MÉTODOS: Foi elaborado um modelo de impacto no orçamento para prever o impacto econômico da incorporação dos stents farmacológicos no orçamento do Sistema Único de Saúde. Foram coletados dados de custo e procedimentos locais de várias fontes, mais especificamente: dados de volume de procedimentos, custos hospitalares, custos dos stents, custos de medicamentos e número de stents utilizados por procedimentos uni e multivasculares. RESULTADOS: Os resultados no primeiro ano indicam que o impacto no Sistema Único de Saúde é de 12,8% no cenário conservador e de 24,4% no pior cenário, representando aumento de R$ 24 milhões a R$ 44 milhões no orçamento total projetado. CONCLUSÃO: O uso de stent farmacológico tem custo adicional comparativamente ao uso de stent convencional, no primeiro ano de utilização, no Sistema Único de Saúde.BACKGROUND: Drug-eluting stents represent an additional option to treat coronary artery disease. This technology represents a major breakthrough that may require additional funding in the short-term to enable its inclusion in procedures of the Unified Health System. OBJECTIVE: To estimate the impact on the Unified Health System budget in the first year of use of drug-eluting stents. METHODS: A Budget Impact Model was designed to predict the economic impact of the inclusion of drug-eluting stents in the Unified Health System budget. Data about costs and local procedures were collected in multiple sources, specifically procedure volume data, hospital costs

  20. Conhecimento de graduandos em fisioterapia na Universidade de Fortaleza sobre o Sistema Único de Saúde University of Fortaleza physical therapy undergraduates' knowledge on the Brazilian Health Care System

    Directory of Open Access Journals (Sweden)

    Liane Barreto Diógenes Pinheiro

    2009-09-01

    Full Text Available Um novo modelo de saúde pública, visando corrigir o sistema de saúde inadequado às necessidades da população, foi proposto na 8ª Conferência Nacional de Saúde em 1986. Até hoje, porém, o funcionamento do sistema único de saúde (SUS ainda está muito distante de seus princípios básicos. Uma questão freqüente a respeito é a da capacitação de profissionais para atuar no SUS. Este estudo objetivou avaliar o conhecimento sobre o SUS dos graduandos em Fisioterapia na Universidade de Fortaleza, por meio da aplicação de um questionário especialmente elaborado. Participaram 56 dentre os 68 graduandos em 2007, independente de sexo e idade. Os resultados mostram que 41 (73,2% dos entrevistados alegam ter recebido na graduação formação adequada para atuar no SUS; 32 (62,5% tinham feito estágio em unidade básica de saúde; e 47 (83,9% julgaram-se aptos a atuar no sistema. A média de acertos sobre os princípios doutrinários e organizacionais, origem, função e financiamento do SUS foi significativamente maior que a de erros (pIn 1986, the 8th National Health Conference proposed a new public health system model, since the existing one was deemed inappropriate to meet the population needs. However, up to the present, the Brazilian National Unified Health Care System's (NUHCS operation is far from its basic principles. Professional qualification of health providers to act in the system is often raised as a related issue. This study aimed at assessing University of Fortaleza (Unifor physical therapy undergraduate students' knowledge on the NUHCS, by means of a specifically developed survey. Fifty-six (out of 68 physical therapy graduates, regardless of sex and age, answered the questionnaire. Results show that 41 (73,2% subjects allegedly received adequate education about the NUHCS; 32 (62,5% had undergone training inside a basic health unit; and 47 (83,9% considered themselves apt to work at the system. Mean number of correct

  1. Power management systems for sediment microbial fuel cells in high power and continuous power applications

    Science.gov (United States)

    Donovan, Conrad Koble

    The objective of this dissertation was to develop power management systems (PMS) for sediment microbial fuel cells (SFMCs) for high power and continuous applications. The first part of this dissertation covers a new method for testing the performance of SMFCs. This device called the microbial fuel cell tester was developed to automatically test power generation of PMS. The second part focuses on a PMS capable of delivering high power in burst mode. This means that for a small amount of time a large amount of power up to 2.5 Watts can be delivered from a SMFC only generating mW level power. The third part is aimed at developing a multi-potentiostat laboratory tool that measures the performance at fixed cell potentials of microbial fuel cells so that I can optimize them for use with the PMS. This tool is capable of controlling the anode potential or cathode potential and measuring current of six separate SMFCs simultaneously. By operating multiple potentiostats, I was able to run experiments that find ideal operating conditions for the sediment microbial fuel cells, and also I can optimize the power management system for these conditions. The fourth part of the dissertation is targeting a PMS that was able to operate a sensor continuously which was powered by an SMFC. In pervious applications involving SMFCs, the PMS operated in batch mode. In this PMS, the firmware on the submersible ultrasonic receiver (SUR) was modified for use with my PMS. This integration of PMS and SUR allowed for the continuous operation of the SUR without using a battery. Finally, the last part of the dissertation recommends a scale-up power management system to overcome the linearity scale up issue of SMFCs as future work. Concluding remarks are also added to summarize the goal and focus of this dissertation.

  2. Comparative study of gas-analyzing systems designed for continuous monitoring of TPP emissions

    Science.gov (United States)

    Kondrat'eva, O. E.; Roslyakov, P. V.

    2017-06-01

    Determining the composition of combustion products is important in terms of both control of emissions into the atmosphere from thermal power plants and optimization of fuel combustion processes in electric power plants. For this purpose, the concentration of oxygen, carbon monoxide, nitrogen, and sulfur oxides in flue gases is monitored; in case of solid fuel combustion, fly ash concentration is monitored as well. According to the new nature conservation law in Russia, all large TPPs shall be equipped with continuous emission monitoring and measurement systems (CEMMS) into the atmosphere. In order to ensure the continuous monitoring of pollutant emissions, direct round-the-clock measurements are conducted with the use of either domestically produced or imported gas analyzers and analysis systems, the operation of which is based on various physicochemical methods and which can be generally used when introducing CEMMS. Depending on the type and purposes of measurement, various kinds of instruments having different features may be used. This article represents a comparative study of gas-analysis systems for measuring the content of polluting substances in exhaust gases based on various physical and physicochemical analysis methods. It lists basic characteristics of the methods commonly applied in the area of gas analysis. It is proven that, considering the necessity of the long-term, continuous operation of gas analyzers for monitoring and measurement of pollutant emissions into the atmosphere, as well as the requirements for reliability and independence from aggressive components and temperature of the gas flow, it is preferable to use optical gas analyzers for the aforementioned purposes. In order to reduce the costs of equipment comprising a CEMMS at a TPP and optimize the combustion processes, electrochemical and thermomagnetic gas analyzers may also be used.

  3. Pointwise completeness and pointwise degeneracy of positive fractional descriptor continuous-time linear systems with regular pencils

    Directory of Open Access Journals (Sweden)

    Kaczorek Tadeusz

    2015-06-01

    Full Text Available Pointwise completeness and pointwise degeneracy of positive fractional descriptor continuous-time linear systems with regular pencils are addressed. Conditions for pointwise completeness and pointwise degeneracy of the systems are established and illustrated by an example.

  4. On improving the convergence rate of linear continuous-time systems subject to asymmetrically constrained control

    Directory of Open Access Journals (Sweden)

    A. Baddou

    2006-01-01

    Full Text Available This paper solves the problem of controlling linear continuous-time systems subject to control signals constrained in magnitude (maybe asymmetrically. A controller design methodology is proposed, based on using an asymmetric Lyapunov function, that avoids the discontinuities in the control vector components resulting from the application of a piecewise linear control law previously proposed. The proposed method gives improved speed of convergence without discontinuities of the control vector components, respecting always the imposed asymmetric constraints. An example illustrates the approach.

  5. TREATMENT OF TEXTILE WASTEWATER USING A CONTINUOUS FLOW ACTIVATED SLUDGE SYSTEM AT PILOT-SCALE

    Directory of Open Access Journals (Sweden)

    M. A. ABOULHASSAN

    2014-11-01

    Full Text Available Textile industry wastewaters contain high concentrations of organic matter, toxic substances and dyes and pigments, and are harmful to receiving environment. Activated sludge system at pilot scale with continuous feeding, was used for the treatment of a dyeing unit effluent. The results showed that treatment allows a removal rate of 40-56 % of chemical oxygen demand (COD, and 13 to 30 % of color. The adsorption on sludge appears to be the main process responsible for the color removal of wastewater generated by textile industry.

  6. Bell's Inequalities for Continuous-Variable Systems in Generic Squeezed States

    CERN Document Server

    Martin, Jerome

    2016-01-01

    Bell's inequality for continuous-variable bipartite systems is studied. The inequality is expressed in terms of pseudo-spin operators and quantum expectation values are calculated for generic two-mode squeezed states characterized by a squeezing parameter $r$ and a squeezing angle $\\varphi$. Allowing for generic values of the squeezing angle is especially relevant when $\\varphi$ is not under experimental control, such as in cosmic inflation, where small quantum fluctuations in the early Universe are responsible for structures formation. Compared to previous studies restricted to $\\varphi=0$ and to a fixed orientation of the pseudo-spin operators, allowing for $\\varphi\

  7. System Level Design of a Continuous-Time Delta-Sigma Modulator for Portable Ultrasound Scanners

    DEFF Research Database (Denmark)

    Llimos Muntal, Pere; Færch, Kjartan; Jørgensen, Ivan Harald Holger;

    2015-01-01

    In this paper the system level design of a continuous-time ∆Σ modulator for portable ultrasound scanners is presented. The overall required signal-to-noise ratio (SNR) is derived to be 42 dB and the sampling frequency used is 320 MHz for an oversampling ratio of 16. In order to match these requir......, based on high-level VerilogA simulations, the performance of the ∆Σ modulator versus various block performance parameters is presented as trade-off curves. Based on these results, the block specifications are derived....

  8. A novel system for continuous protein refolding and on-line capture by expanded bed adsorption

    DEFF Research Database (Denmark)

    Ferré, Henrik; Ruffet, E; Nielsen, L.L.B;

    2005-01-01

    -h beta(2)m) both at analytical, small, and preparative scale. In a single scalable operation, extracted and denatured inclusion body proteins from Escherichia coli were continuously diluted into refolding buffer, using a short pipe reactor, allowing for a defined retention and refolding time...... to be controlled and maintained throughout the process, irrespective of the batch size; i.e., it is readily scalable. Furthermore, the procedure is fast and tolerant toward aggregate formation, a common complication of in vitro protein refolding. In conclusion, this system represents a novel approach to small...

  9. Monitoring Re-execution Condition of Continuous Action Step in Computerized Procedure System

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Yun Goo; Lee, Sung Jin [KHNP Co., Daejeon (Korea, Republic of)

    2010-05-15

    The APR1400 digital main control room (MCR) has many advanced features of computerized control room. One of the most important improvements is the Computerized Procedure System (CPS). Emergency operating procedure (EOP) in the Nuclear Power Plant (NPP) provides a series of instructions to MCR operators to cope with design base events. Computerized EOP supports the operator in terms of plant monitoring, decision making, and control access. Continuous Action Step (CAS) in EOP should be monitored through the entire procedure execution when plant processes are disturbed under emergency conditions. CPS can monitor CAS re-execution condition during EOP execution. CPS has functions to monitor CAS re-execution condition

  10. Vibration Analysis of Continuous Maglev Guideway Considering the Magnetic Levitation System

    Institute of Scientific and Technical Information of China (English)

    TENG Yan-feng; TENG Nian-guan; KOU Xin-jian

    2008-01-01

    The dynamic interaction between moving vehicles and two-span continuous guideway was discussed. With the consideration of the magnetic levitation system, the maglev vehicle/guideway dynamic interaction model was developed. Numerical simulation was performed to understand dynamic characteristics of the guide- way used in practice. The results show that vehicle speed, span length and primary frequency of the guideway have an important influence on the dynamic responses of the guideway and there is no distinct trend towards resonance vibration when f1 equals 1.0. The definite way is to control the impact coefficient and acceleration of the guideway. The conclusions can serve the design of high speed maglev guideway.

  11. Headset Bluetooth and cell phone based continuous central body temperature measurement system.

    Science.gov (United States)

    Sanches, J Miguel; Pereira, Bruno; Paiva, Teresa

    2010-01-01

    The accurate measure of the central temperature is a very important physiologic indicator in several clinical applications, namely, in the characterization and diagnosis of sleep disorders. In this paper a simple system is described to continuously measure the body temperature at the ear. An electronic temperature sensor is coupled to the microphone of a common commercial auricular Bluetooth device that sends the temperature measurements to a mobile phone to which is paired. The measurements are stored at the mobile phone and periodically sent to a medical facility by email or SMS (short messaging service).

  12. ROPIVACAINE CONTINUOUS WOUND INFUSION VERSUS CONTINUOUS EPIDURAL VERSUS SYSTEMIC ANALGESIA FOR POST CAESAREAN DELIVERY UNDER SPINAL ANAESTHESIA: A PROSPECTIVE RANDOMISED CONTROLLED STUDY

    Directory of Open Access Journals (Sweden)

    Paleti

    2014-07-01

    Full Text Available BACKGROUND: Opioid based analgesic regimens have been the gold standard for post caesarean analgesia until recently. Regional techniques like local intra-wound infusion techniques are becoming popular now. Our aim is to evaluate the efficacy of 0.2% Ropivacaine continuous wound infusion versus continuous epidural versus conventional systemic analgesia for post caesarean delivery. METHODOLOGY: 60 healthy parturients of ASA I/II were randomized after elective caesarean section into 3 groups of 20 each. Group-A: Received 0.2% Ropivacaine via an epidural catheter placed into subcutaneous tissue and fascia before skin closure at the rate of 5ml/hr. through infusion pump. Group-B: Received 0.2% Ropivacaine continuous epidural infusion via an epidural catheter at the rate of 8ml/hr. An initial bolus of 10ml was given in groups A&B. Group-C: Received standard systemic analgesia with diclofenac sodium and rescue opioid. Post operatively parturients were assessed for VAS scores for pain at rest and during movement, total Ropivacaine consumption, Tramadol consumption and side effects. Data were analyzed using SPSS software version 22. RESULTS: There were no significant differences in the mean VAS scores at rest and at movement between groups A or B and C. The consumption of Tramadol was significantly greater in Group C (p value AC=0.025, BC=0.0000 than A or B. Mean Ropivacaine consumption is significantly higher in Group B (p=0.000 than Group A. CONCLUSION: Continuous local intra-wound analgesia with Ropivacaine produced comparable analgesia to that of continuous epidural and superior analgesia compared to standard systemic analgesia.

  13. Análise do sistema de pesquisa em saúde do Brasil: o ambiente de pesquisa Health research system analysis: the research environment

    Directory of Open Access Journals (Sweden)

    José Noronha

    2009-09-01

    Full Text Available OBJETIVO: conhecer a percepção dos formuladores de política científica, pesquisadores e usuários dos resultados da pesquisa em saúde sobre o ambiente da pesquisa em saúde no país. Método: estudo descritivo com dados obtidos por meio de questionário padronizado aplicado a uma amostra probabilística de líderes de grupos de pesquisa de instituições do Rio de Janeiro, São Paulo, Minas Gerais, Rio Grande do Sul, Bahia e Distrito Federal; e, amostra intencional de formuladores de política científica e usuários dos resultados de pesquisa. Questionários desenvolvidos e testados por equipe da Organização Mundial de Saúde (OMS, utilizados em 12 estudos-pilotos em países de renda média e baixa. RESULTADOS: os entrevistados consideram a motivação para a produção e utilização da pesquisa em saúde melhor em suas instituições do que no país. Os aspectos do ambiente de pesquisa considerados prioritários foram: relevância dos problemas investigados, incentivo à carreira do pesquisador e transparência no financiamento. Os aspectos mais bem avaliados foram: acesso às informações científicas, oportunidades para comunicação e publicação dos resultados e treinamento dos pesquisadores. As piores avaliações foram feitas para: salários, incentivos à carreira e transparência no financiamento. Os resultados sofreram a influência da área científica de atuação dos entrevistados, da posição como formulador, pesquisador ou usuário e dos grupos etários. CONCLUSÃO: os entrevistados avaliaram o ambiente de pesquisa em saúde no país como regular para a maioria dos aspectos analisados destacando como bons apenas o treinamento dos pesquisadores, o acesso à informação científica e as oportunidades para publicação. Há necessidade de aprimoramento de vários aspectos do ambiente de pesquisa em saúde no país.OBJECTIVE: to learn about the perception of decision-makers of scientific policies, researchers and users of

  14. 40 CFR 60.1240 - How do I make sure my continuous emission monitoring systems are operating correctly?

    Science.gov (United States)

    2010-07-01

    ... emission monitoring systems are operating correctly? 60.1240 Section 60.1240 Protection of Environment... Continuous Emission Monitoring § 60.1240 How do I make sure my continuous emission monitoring systems are operating correctly? (a) Conduct initial, daily, quarterly, and annual evaluations of your...

  15. Novel optoacoustic system for noninvasive continuous monitoring of cerebral venous blood oxygenation

    Science.gov (United States)

    Petrov, Yuriy; Petrov, Irene Y.; Prough, Donald S.; Esenaliev, Rinat O.

    2012-02-01

    Traumatic brain injury (TBI) and spinal cord injury are a major cause of death for individuals under 50 years of age. In the USA alone, 150,000 patients per year suffer moderate or severe TBI. Moreover, TBI is a major cause of combatrelated death. Monitoring of cerebral venous blood oxygenation is critically important for management of TBI patients because cerebral venous blood oxygenation below 50% results in death or severe neurologic complications. At present, there is no technique for noninvasive, accurate monitoring of this clinically important variable. We proposed to use optoacoustic technique for noninvasive monitoring of cerebral venous blood oxygenation by probing cerebral veins such as the superior sagittal sinus (SSS) and validated it in animal studies. In this work, we developed a novel, medical grade optoacoustic system for continuous, real-time cerebral venous blood oxygenation monitoring and tested it in human subjects at normal conditions and during hyperventilation to simulate changes that may occur in patients with TBI. We designed and built a highly-sensitive optoacoustic probe for SSS signal detection. Continuous measurements were performed in the near infrared spectral range and the SSS oxygenation absolute values were automatically calculated in real time using a special algorithm developed by our group. Continuous measurements performed at normal conditions and during hyperventilation demonstrated that hyperventilation resulted in approximately 12% decrease of cerebral venous blood oxygenation.

  16. A Continuous Formulation for Logical Decisions in Differential Algebraic Systems using Mathematical Programs with Complementarity Constraints

    Directory of Open Access Journals (Sweden)

    Kody M. Powell

    2016-03-01

    Full Text Available This work presents a methodology to represent logical decisions in differential algebraic equation simulation and constrained optimization problems using a set of continuous algebraic equations. The formulations may be used when state variables trigger a change in process dynamics, and introduces a pseudo-binary decision variable, which is continuous, but should only have valid solutions at values of either zero or one within a finite time horizon. This formulation enables dynamic optimization problems with logical disjunctions to be solved by simultaneous solution methods without using methods such as mixed integer programming. Several case studies are given to illustrate the value of this methodology including nonlinear model predictive control of a chemical reactor using a surge tank with overflow to buffer disturbances in feed flow rate. Although this work contains novel methodologies for solving dynamic algebraic equation (DAE constrained problems where the system may experience an abrupt change in dynamics that may otherwise require a conditional statement, there remain substantial limitations to this methodology, including a limited domain where problems may converge and the possibility for ill-conditioning. Although the problems presented use only continuous algebraic equations, the formulation has inherent non-smoothness. Hence, these problems must be solved with care and only in select circumstances, such as in simulation or situations when the solution is expected to be near the solver’s initial point.

  17. Dependence of s-waves on continuous dimension: The quantum oscillator and free systems

    Energy Technology Data Exchange (ETDEWEB)

    Wolf, K.B. [Centro de Ciencias Fisicas, Universidad Nacional Autonoma de Mexico, Apartado Postal 48-3, Cuernavaca, Morelos 62251 (Mexico); Aceves-de-la-Cruz, F. [Departamento de Fisica, CUCEI, Universidad de Guadalajara, Av. Revolucion 1500, Guadalajara, Jalisco 44430 (Mexico)

    2006-12-15

    Wavefunctions with rotational symmetry (i.e., zero angular momentum) in D dimensions, are called s-waves. In quantum quadratic systems (free particle, harmonic and repulsive oscillators), their radial parts obey Schroedinger equations with a fictitious centrifugal (for integer D{>=}4) or centripetal (for D = 2) potential. These Hamiltonians close into the three-dimensional Lorentz algebra so(2,1), whose exceptional interval corresponds to the critical range of continuous dimensions 0continuous-D dimensions, where the extension structure is maintained in the limit of continuous spectra. Finally, we compute the free time evolution of the expectation values of the Hamiltonian, dilatation generator, and square radius between three distinct sets of 'heat'-diffused localized eigenstates. This provides a simple group-theoretic description of the purported contraction/expansion of Gaussian-ring s-waves in D>0 dimensions. (Abstract Copyright [2006], Wiley Periodicals, Inc.)

  18. A Microfluidic Device for Continuous Sensing of Systemic Acute Toxicants in Drinking Water

    Directory of Open Access Journals (Sweden)

    Xinyan Zhao

    2013-12-01

    Full Text Available A bioluminescent-cell-based microfluidic device for sensing toxicants in drinking water was designed and fabricated. The system employed Vibrio fischeri cells as broad-spectrum sensors to monitor potential systemic cell toxicants in water, such as heavy metal ions and phenol. Specifically, the chip was designed for continuous detection. The chip design included two counter-flow micromixers, a T-junction droplet generator and six spiral microchannels. The cell suspension and water sample were introduced into the micromixers and dispersed into droplets in the air flow. This guaranteed sufficient oxygen supply for the cell sensors. Copper (Cu2+, zinc (Zn2+, potassium dichromate and 3,5-dichlorophenol were selected as typical toxicants to validate the sensing system. Preliminary tests verified that the system was an effective screening tool for acute toxicants although it could not recognize or quantify specific toxicants. A distinct non-linear relationship was observed between the zinc ion concentration and the Relative Luminescence Units (RLU obtained during testing. Thus, the concentration of simple toxic chemicals in water can be roughly estimated by this system. The proposed device shows great promise for an early warning system for water safety.

  19. EMAT weld inspection and weld machine diagnostic system for continuous coil processing lines

    Science.gov (United States)

    Latham, Wayne M.; MacLauchlan, Daniel T.; Geier, Dan P.; Lang, Dennis D.

    1996-11-01

    Weld breaks of steel coil during cold rolling and continuous pickling operations are a significant source of lost productivity and product yield. Babcock and Wilcox Innerspec Technologies has developed a weld process control system which monitors the key variables of the welding process and determines the quality of the welds generated by flash butt welding equipment. This system is known as the Temate 2000 Automated Flash Butt Weld Inspection and Weld Machine Diagnostic System. The Temate 2000 system utilizes electro- magnetic acoustic transducer (EMAT) technology as the basis for performing on-line, real-time, nondestructive weld quality evaluation. This technique accurately detects voids, laps, misalignment and over/under trim conditions in the weld. Results of the EMAT weld inspection are immediately presented to the weld machine operator for disposition. Welding process variables such as voltage, current, platen movements and upset pressures are monitored and collected with the high speed data acquisition system. This data is processed and presented in real-time display to indicate useful welding process information such as platen crabbing, upset force, peak upset current, and many others. Alarming for each variable is provided and allows detailed maintenance reports and summary information to be generated. All weld quality and process parameter data are stored, traceable to each unique weld, and available for post process evaluation. Installation of the Temate 2000 system in a major flat rolled steel mill has contributed to near elimination of weld breakage and increased productivity at this facility.

  20. The Effect of Effluent Recirculation in a Semi-Continuous Two-Stage Anaerobic Digestion System

    Directory of Open Access Journals (Sweden)

    Karthik Rajendran

    2013-06-01

    Full Text Available The effect of recirculation in increasing organic loading rate (OLR and decreasing hydraulic retention time (HRT in a semi-continuous two-stage anaerobic digestion system using stirred tank reactor (CSTR and an upflow anaerobic sludge bed (UASB was evaluated. Two-parallel processes were in operation for 100 days, one with recirculation (closed system and the other without recirculation (open system. For this purpose, two structurally different carbohydrate-based substrates were used; starch and cotton. The digestion of starch and cotton in the closed system resulted in production of 91% and 80% of the theoretical methane yield during the first 60 days. In contrast, in the open system the methane yield was decreased to 82% and 56% of the theoretical value, for starch and cotton, respectively. The OLR could successfully be increased to 4 gVS/L/day for cotton and 10 gVS/L/day for starch. It is concluded that the recirculation supports the microorganisms for effective hydrolysis of polyhydrocarbons in CSTR and to preserve the nutrients in the system at higher OLRs, thereby improving the overall performance and stability of the process.