WorldWideScience

Sample records for assignment systems requirements

  1. On pole structure assignment in linear systems

    Czech Academy of Sciences Publication Activity Database

    Loiseau, J.-J.; Zagalak, Petr

    2009-01-01

    Roč. 82, č. 7 (2009), s. 1179-1192. ISSN 0020-7179 R&D Projects: GA ČR(CZ) GA102/07/1596 Institutional research plan: CEZ:AV0Z10750506 Keywords : linear systems * linear state feedback * pole structure assignment Subject RIV: BC - Control Systems Theory Impact factor: 1.124, year: 2009 http://library.utia.cas.cz/separaty/2009/AS/zagalak-on pole structure assignment in linear systems.pdf

  2. Data requirements for reliable chemical shift assignments in deuterated proteins

    International Nuclear Information System (INIS)

    The information required for chemical shift assignments in large deuterated proteins was investigated using a Monte Carlo approach (Hitchens et al., 2002). In particular, the consequences of missing amide resonances on the reliability of assignments derived from Cα and CO or from Cα and Cβ chemical shifts was investigated. Missing amide resonances reduce both the number of correct assignments as well as the confidence in these assignments. More significantly, a number of undetectable errors can arise when as few as 9% of the amide resonances are missing from the spectra. However, the use of information from residue specific labeling as well as local and long-range distance constraints improves the reliability and extent of assignment. It is also shown that missing residues have only a minor effect on the assignment of protein-ligand complexes using Cα and CO chemical shifts and Cα inter-residue connectivity, provided that the known chemical shifts of the unliganded protein are utilized in the assignment process

  3. File Assignment Policy in Network Storage System

    Institute of Scientific and Technical Information of China (English)

    Cao Qiang; Xie Chang-sheng

    2003-01-01

    Network storage increase capacity and scalability of storage system, data availability and enables the sharing of data among clients. When the developing network technology reduce performance gap between disk and network, however, mismatched policies and access pattern can significantly reduce network storage performance. So the strategy of data placement in system is an important factor that impacts the performance of overall system. In this paper, the two algorithms of file assignment are presented. One is Greed partition that aims at the load balance across all NADs (Network Attached Disk). The other is Sort partition that tries to minimize variance of service time in each NAD. Moreover, we also compare the performance of our two algorithms in practical environment. Our experimental results show that when the size distribution (load characters) of all assigning files is closer and larger, Sort partition provides consistently better response times than Greedy algorithm. However, when the range of all assigning files is wider, there are more small files and access rate is higher, the Greedy algorithm has superior performance in compared with the Sort partition in off-line.

  4. Assignment and Correspondence Tracking System - Tactical / Operational Reporting

    Data.gov (United States)

    Social Security Administration — Reporting data store for the Assignment and Correspondence Tracking System (ACT). ACT automates the assignment and tracking of correspondence processing within the...

  5. The ICAP (Interactive Course Assignment Pages Publishing System

    Directory of Open Access Journals (Sweden)

    Kim Griggs

    2008-03-01

    Full Text Available The ICAP publishing system is an open source custom content management system that enables librarians to easily and quickly create and manage library help pages for course assignments (ICAPs, without requiring knowledge of HTML or other web technologies. The system's unique features include an emphasis on collaboration and content reuse and an easy-to-use interface that includes in-line help, simple forms and drag and drop functionality. The system generates dynamic, attractive course assignment pages that blend Web 2.0 features with traditional library resources, and makes the pages easier to find by providing a central web page for the course assignment pages. As of December 2007, the code is available as free, open-source software under the GNU General Public License.

  6. System optimal traffic assignment with departure time choice

    OpenAIRE

    Chow, A. H. F.

    2007-01-01

    This thesis investigates analytical dynamic system optimal assignment with departure time choice in a rigorous and original way. Dynamic system optimal assignment is formulated here as a state-dependent optimal control problem. A fixed volume of traffic is assigned to departure times and routes such that the total system travel cost is minimized. Although the system optimal assignment is not a realistic representation of traffic, it provides a bound on performance and shows how...

  7. Pole assignment for stochastic systems with unknown coefficients

    Institute of Scientific and Technical Information of China (English)

    陈翰馥[1; 曹希仁[2

    2000-01-01

    This paper solves the exact pole assignment problem for the single-input stochastic systems with unknown coefficients under the controllability assumption which is necessary and sufficient for the arbitrary pole assignment for systems with known coefficients. The system noise is required to be mutually independent with zero mean and bounded second moment. Two approaches to solving the problem are proposed: One is the iterative learning approach which can be applied when the state at a fixed time can be repeatedly observed with different feedback gains; the other is the adaptive control approach which works when the trajectories satisfy a nondegeneracy condition. Both methods are essentially based on stochastic approximation, and the feedback gains are recursively given without invoking the certainty-equivalency-principle.

  8. CYCLE TIMES ASSIGNMENT OF NONLINEAR DISCRETE EVENT DYNAMIC SYSTEMS

    Institute of Scientific and Technical Information of China (English)

    CHEN Wende

    2000-01-01

    In this paper, nonautonomous models of Discrete Event Dynamic Systems (DEDS) are established by min-max function, reachability and observability are defined,the problem on cycle times assignment of DEDS, which corresponds with the important problem on poles assignment of linear systems, is studied. By Gunawardena et al.'Duality Theorem following results are obtained: Cycle times of system can be assigned under state feedback(or output feedback) if and only if system is reachable (or reachable and obserbable).

  9. Linear Assignment Maps for Correlated System-Environment States

    CERN Document Server

    Rodríguez-Rosario, César A; Aspuru-Guzik, Alán

    2009-01-01

    An assignment map is a mathematical operator that describes initial system-environment states for an open quantum systems. We reexamine the notion of assignments, introduced by Pechukas, and show the conditions for which linear assignments can account for correlations between the system and the environment. We study the role of other conditions, such as consistency and positivity of the map, and show the effects of relaxing these. Finally, we establish a connection between the violation of positivity of linear assignments and the no-broadcasting theorem.

  10. Fast assignment reduction in inconsistent incomplete decision systems

    Institute of Scientific and Technical Information of China (English)

    Min Li; Shaobo Deng; Shengzhong Feng; Jianping Fan

    2014-01-01

    This paper focuses on fast algorithm for computing the assignment reduct in inconsistent incomplete decision systems. It is quite inconvenient to judge the assignment reduct directly ac-cording to its definition. We propose the judgment theorem for the assignment reduct in the inconsistent incomplete decision system, which greatly simplifies judging this type reduct. On such basis, we derive a novel attribute significance measure and construct the fast assignment reduction algorithm (F-ARA), intended for com-puting the assignment reduct in inconsistent incomplete decision systems. Final y, we make a comparison between F-ARA and the discernibility matrix-based method by experiments on 13 Univer-sity of California at Irvine (UCI) datasets, and the experimental results prove that F-ARA is efficient and feasible.

  11. Information requirements for enterprise systems

    OpenAIRE

    Sommerville, I.; Lock, R.; Storer, T.

    2012-01-01

    In this paper, we discuss an approach to system requirements engineering, which is based on using models of the responsibilities assigned to agents in a multi-agency system of systems. The responsibility models serve as a basis for identifying the stakeholders that should be considered in establishing the requirements and provide a basis for a structured approach, described here, for information requirements elicitation. We illustrate this approach using a case study drawn from civil emergenc...

  12. An Active-Learning Assignment Requiring Pharmacy Students to Write Medicinal Chemistry Examination Questions

    OpenAIRE

    Kolluru, Srikanth

    2012-01-01

    Objectives. To implement and assess the effectiveness of an assignment requiring doctor of pharmacy (PharmD) students to write examination questions for the medicinal chemistry sections of a pharmacotherapeutics course.

  13. Neuronal activity in dorsomedial and dorsolateral striatum under the requirement for temporal credit assignment.

    Science.gov (United States)

    Her, Eun Sil; Huh, Namjung; Kim, Jieun; Jung, Min Whan

    2016-01-01

    To investigate neural processes underlying temporal credit assignment in the striatum, we recorded neuronal activity in the dorsomedial and dorsolateral striatum (DMS and DLS, respectively) of rats performing a dynamic foraging task in which a choice has to be remembered until its outcome is revealed for correct credit assignment. Choice signals appeared sequentially, initially in the DMS and then in the DLS, and they were combined with action value and reward signals in the DLS when choice outcome was revealed. Unlike in conventional dynamic foraging tasks, neural signals for chosen value were elevated in neither brain structure. These results suggest that dynamics of striatal neural signals related to evaluating choice outcome might differ drastically depending on the requirement for temporal credit assignment. In a behavioral context requiring temporal credit assignment, the DLS, but not the DMS, might be in charge of updating the value of chosen action by integrating choice, action value, and reward signals together. PMID:27245401

  14. Design of multivariable feedback control systems via spectral assignment

    Science.gov (United States)

    Mielke, R. R.; Tung, L. J.; Marefat, M.

    1983-01-01

    The applicability of spectral assignment techniques to the design of multivariable feedback control systems was investigated. A fractional representation design procedure for unstable plants is presented and illustrated with an example. A computer aided design software package implementing eigenvalue/eigenvector design procedures is described. A design example which illustrates the use of the program is explained.

  15. 45 CFR 2551.71 - What requirements govern the assignment of Senior Companions?

    Science.gov (United States)

    2010-10-01

    ...) CORPORATION FOR NATIONAL AND COMMUNITY SERVICE SENIOR COMPANION PROGRAM Senior Companion Placements and... achievement and maintenance of the highest level of independent living for their clients. (3) Are meaningful... 45 Public Welfare 4 2010-10-01 2010-10-01 false What requirements govern the assignment of...

  16. 76 FR 42706 - Amendment of Inspector General Operations & Reporting System Audit, Assignment, and Timesheet...

    Science.gov (United States)

    2011-07-19

    ... assignment number, audit report number, the name and social security number of the assigned OIG auditor, or... AGENCY Amendment of Inspector General Operations & Reporting System Audit, Assignment, and Timesheet... Inspector General Operations & Reporting (IGOR) System Audit, Assignment, and Timesheet Files (EPA-42)...

  17. Dominant pole and eigenstructure assignment for positive systems with state feedback

    Science.gov (United States)

    Li, Zhao; Lam, James

    2016-09-01

    In this paper, the dominant pole assignment problem, the dominant eigenstructure assignment problem and the robust dominant pole assignment problem for linear time-invariant positive systems with state feedback are considered. The dominant pole assignment problem is formulated as a linear programming problem, and the dominant eigenstructure problem is formulated as a quasiconvex optimisation problem with linear constraints. The robust dominant pole assignment problem is formulated as a non-convex optimisation problem with non-linear constraints which is solved using particle swarm optimisation (PSO) with an efficient scheme which employs the dominant eigenstructure assignment technique to accelerate the convergence of the PSO procedure. Each of the three problems can be further constrained by requiring that the controller has a pre-specified structure, or the gain matrix have both elementwise upper and lower bounds. These constraints can be incorporated into the proposed scheme without increasing the complexity of the algorithms. Both the continuous-time case and the discrete-time case are treated in the paper.

  18. Global exponential stability of recurrent neural networks for synthesizing linear feedback control systems via pole assignment.

    Science.gov (United States)

    Zhang, Yunong; Wang, Jun

    2002-01-01

    Global exponential stability is the most desirable stability property of recurrent neural networks. The paper presents new results for recurrent neural networks applied to online computation of feedback gains of linear time-invariant multivariable systems via pole assignment. The theoretical analysis focuses on the global exponential stability, convergence rates, and selection of design parameters. The theoretical results are further substantiated by simulation results conducted for synthesizing linear feedback control systems with different specifications and design requirements. PMID:18244461

  19. Traffic Route Modelling and Assignment with Intelligent Transport System

    Directory of Open Access Journals (Sweden)

    Kunicina Nadezhda

    2014-12-01

    Full Text Available The development of signal transmitting environment for multimodal traffic control will enhance the integration of emergency and specialized transport routing tools in usual traffic control paradigms - it is one of the opportunities offered by modern intelligent traffic control systems. The improvement of effective electric power use in public transport system is an advantage of Intelligent Transport System (ITS. The research is connected with the improvement of on-line traffic control and adaptation of special traffic lighting alternatives by ITS. The assignment of the nearest appropriate transport will be done by passenger request, but unlike information system, the transport planning is done on demand. The task can be solved with the help of modern technical methods and equipment, as well as by applying control paradigms of the distributed systems. The problem is solved with the help of calculations hyper-graph and scheduling theory. The goal of the research is to develop methods, which support scheduling of the emergency transport, using high performance computing.

  20. Discovering system requirements

    Energy Technology Data Exchange (ETDEWEB)

    Bahill, A.T.; Bentz, B. [Univ. of Arizona, Tucson, AZ (United States). Systems and Industrial Engineering; Dean, F.F. [Sandia National Labs., Albuquerque, NM (United States)

    1996-07-01

    Cost and schedule overruns are often caused by poor requirements that are produced by people who do not understand the requirements process. This report provides a high-level overview of the system requirements process, explaining types, sources, and characteristics of good requirements. System requirements, however, are seldom stated by the customer. Therefore, this report shows ways to help you work with your customer to discover the system requirements. It also explains terminology commonly used in the requirements development field, such as verification, validation, technical performance measures, and the various design reviews.

  1. Critical Task Re-assignment under Hybrid Scheduling Approach in Multiprocessor Real-Time Systems

    CERN Document Server

    Nair, Gopalakrishnan T R

    2012-01-01

    Embedded hard real time systems require substantial amount of emergency processing power for the management of large scale systems like a nuclear power plant under the threat of an earth quake or a future transport systems under a peril. In order to meet a fully coordinated supervisory control of multiple domains of a large scale system, it requires the scenario of engaging multiprocessor real time design. There are various types of scheduling schemes existing for meeting the critical task assignment in multiple processor environments and it requires the tracking of faulty conditions of the subsystem to avoid system underperformance from failure patterns. Hybrid scheduling usually engages a combined scheduling philosophy comprising of a static scheduling of a set of tasks and a highly pre-emptive scheduling for another set of tasks in different situations of process control. There are instances where highly critical tasks need to be introduced at a least expected catastrophe and it cannot be ensured to meet a...

  2. TWRSview system requirements specification

    International Nuclear Information System (INIS)

    This document provides the system requirements specification for the TWRSview software system. The TWRSview software system is being developed to integrate electronic data supporting the development of the TWRS technical baseline

  3. Partial eigenvalue assignment and its stability in a time delayed system

    Science.gov (United States)

    Singh, Kumar V.; Dey, Rajeeb; Datta, Biswa N.

    2014-01-01

    Active vibration control strategy is an effective way to control dangerous vibrations in a structure, caused by resonance and to manipulate the dynamics of vibrational response. Implementation of this strategy requires real-time computations of two feedback control matrices such that a small amount of eigenvalues of the associated quadratic matrix pencil are replaced by suitably chosen ones while the remaining large number of eigenvalues and eigenvectors remain unchanged ensuring the no spill-over. This mathematical problem is referred to as the Quadratic Partial Eigenvalue Assignment problem. The greatest challenge there is to solve the problems using the knowledge of only a small number of eigenvalues and eigenvectors that are computable using state-of-the-art techniques. This paper generalizes the earlier work on partial assignment to constant time-delay systems. Furthermore, a posterior stability analysis is carried out to identify the ranges of the time-delay that maintains the closed-loop assignment while keeping the stability of the infinite number of eigenvalues for the time-delayed systems. The practical features of the proposed methods are that it is implemented in the second-order setting itself using only those small number of eigenvalues and the eigenvectors that are to be assigned and the no spill-over is established by means of mathematical results. The results of our numerical experiments support the validity of our proposed methods.

  4. Transportation System Requirements Document

    Energy Technology Data Exchange (ETDEWEB)

    1993-09-01

    This Transportation System Requirements Document (Trans-SRD) describes the functions to be performed by and the technical requirements for the Transportation System to transport spent nuclear fuel (SNF) and high-level radioactive waste (HLW) from Purchaser and Producer sites to a Civilian Radioactive Waste Management System (CRWMS) site, and between CRWMS sites. The purpose of this document is to define the system-level requirements for Transportation consistent with the CRWMS Requirement Document (CRD). These requirements include design and operations requirements to the extent they impact on the development of the physical segments of Transportation. The document also presents an overall description of Transportation, its functions, its segments, and the requirements allocated to the segments and the system-level interfaces with Transportation. The interface identification and description are published in the CRWMS Interface Specification.

  5. Transportation System Requirements Document

    International Nuclear Information System (INIS)

    This Transportation System Requirements Document (Trans-SRD) describes the functions to be performed by and the technical requirements for the Transportation System to transport spent nuclear fuel (SNF) and high-level radioactive waste (HLW) from Purchaser and Producer sites to a Civilian Radioactive Waste Management System (CRWMS) site, and between CRWMS sites. The purpose of this document is to define the system-level requirements for Transportation consistent with the CRWMS Requirement Document (CRD). These requirements include design and operations requirements to the extent they impact on the development of the physical segments of Transportation. The document also presents an overall description of Transportation, its functions, its segments, and the requirements allocated to the segments and the system-level interfaces with Transportation. The interface identification and description are published in the CRWMS Interface Specification

  6. On the applicability of eigenvalue/eigenvector assignment in multivariable systems

    Science.gov (United States)

    Liberty, S. R.; Mielke, R. R.

    1979-01-01

    The technique of multivariable control-system design via assignment of the closed loop state matrix eigensystem is described. Features of this developing methodology include exact eigenvalue assignment, eigenvector assignment that approximates in a least squares sense a priori modal specifications, and an interactive design trade-off between the latter and desired eigensystem sensitivity with respect to plant parameters.

  7. A Web Support System for Submission and Handling of Programming Assignments

    DEFF Research Database (Denmark)

    Nørmark, Kurt

    2011-01-01

    Individual submission of programming assignments should be considered in all introductory programming courses. We describe a custom web support system for submission and management of programming assignments in an introductory C programming course. Experience from the first time use of the system...

  8. Reducing Perceptions of Time Required to Complete Math Assignments by Adding Problems to Assignments: A Synthesis of the Additive Interspersal Research

    Science.gov (United States)

    Billington, Eric J.; Skinner, Christopher H.

    2006-01-01

    Results from nine experiments were analyzed to evaluate the relationship between relative problem completion rates (RPCR) and judgments of time involving mathematics assignments. For each experiment, control assignments contained only target mathematics computation or word problems. Matched experimental assignments contained similar target…

  9. A Useful Metaheuristic for Dynamic Channel Assignment in Mobile Cellular Systems

    Directory of Open Access Journals (Sweden)

    Deepak Kumar Singh

    2012-09-01

    Full Text Available The prime objective of a Channel Assignment Problem (CAP is to assign appropriate number of required channels to each cell in a way to achieve both efficient frequency spectrum utilization and minimization of interference effects (by satisfying a number of channel reuse constraints. Dynamic Channel Assignment (DCA assigns the channels to the cells dynamically according to traffic demand, and hence, can provide higher capacity (or lower call blocking probability, fidelity and quality of service than the fixed assignment schemes. Channel assignment algorithms are formulated as combinatorial optimization problems and are NP-hard. Devising a DCA, that is practical, efficient, and which can generate high quality assignments, is challenging. Though Metaheuristic Search techniques like Evolutionary Algorithms, Differential Evolution, Particle Swarm Optimization prove effective in the solution of Fixed Channel Assignment (FCA problems but they still require high computational time and therefore may be inefficient for DCA. A number of approaches have been proposed for the solution of DCA problem but the high complexity of these proposed approaches makes them unsuitable/less efficient for practical use. Therefore, this paper presents an effective and efficient Hybrid Discrete Binary Differential Evolution Algorithm (HDB-DE for the solution of DCA Problem

  10. A prototype expert system which assigns aviation maintenance personnel to squadron billets

    OpenAIRE

    Alston, Thomas Porter

    1987-01-01

    The technical feasibility of developing an expert system to support the assignment of squadron maintenance personnel to authorized billets is examined by building a prototype system. The rules used by an assistant maintenance officer to assign personnel are analyzed, and a database derived from the OPNAV 1000/2 and EDVR is designed. The prototype is developed for a micro-computer system using an expert system shell, Insight 2+, and is fully integrated with dBase III files

  11. Towards an intelligent system for the automatic assignment of domains in globular proteins.

    Science.gov (United States)

    Sternberg, M J; Hegyi, H; Islam, S A; Luo, J; Russell, R B

    1995-01-01

    The automatic identification of protein domains from coordinates is the first step in the classification of protein folds and hence is required for databases to guide structure prediction. Most algorithms encode a single concept based and sometimes do not yield assignments that are consistent with the generally accepted perception. Our development of an automatic approach to identify reliably domains from protein coordinates is described. The algorithm is benchmarked against a manual identification of the domains in 284 representative protein chains. The first step is the domain assignment by distance (DAD) algorithm that considers the density of inter-residue contacts represented in a contact matrix. The algorithm yields 85% agreement with the manual assignment. The paper then considers how the reliability of these assignments could be evaluated. Finally the use of structural comparisons using the STAMP algorithm to validate domain assignment is reported on a test case. PMID:7584461

  12. Heuristic file sorted assignment algorithm of parallel I/O on cluster computing system

    Institute of Scientific and Technical Information of China (English)

    CHEN Zhi-gang; ZENG Bi-qing; XIONG Ce; DENG Xiao-heng; ZENG Zhi-wen; LIU An-feng

    2005-01-01

    A new file assignment strategy of parallel I/O, which is named heuristic file sorted assignment algorithm was proposed on cluster computing system. Based on the load balancing, it assigns the files to the same disk according to the similar service time. Firstly, the files were sorted and stored at the set I in descending order in terms of their service time, then one disk of cluster node was selected randomly when the files were to be assigned, and at last the continuous files were taken orderly from the set I to the disk until the disk reached its load maximum. The experimental results show that the new strategy improves the performance by 20.2% when the load of the system is light and by 31.6% when the load is heavy. And the higher the data access rate, the more evident the improvement of the performance obtained by the heuristic file sorted assignment algorithm.

  13. Traffic Route Modelling and Assignment with Intelligent Transport System

    OpenAIRE

    Kunicina Nadezhda; Galkina Alina; Zabasta Anatolijs; Patlins Antons; Kondratjevs Kaspars

    2014-01-01

    The development of signal transmitting environment for multimodal traffic control will enhance the integration of emergency and specialized transport routing tools in usual traffic control paradigms - it is one of the opportunities offered by modern intelligent traffic control systems. The improvement of effective electric power use in public transport system is an advantage of Intelligent Transport System (ITS). The research is connected with the improvement of on-line traffic control and ad...

  14. Arbitrary eigenvalue assignments for linear time-varying multivariable control systems

    Science.gov (United States)

    Nguyen, Charles C.

    1987-01-01

    The problem of eigenvalue assignments for a class of linear time-varying multivariable systems is considered. Using matrix operators and canonical transformations, it is shown that a time-varying system that is 'lexicography-fixedly controllable' can be made via state feedback to be equivalent to a time-invariant system whose eigenvalues are arbitrarily assignable. A simple algorithm for the design of the state feedback is provided.

  15. Incorporating Systems Thinking in Traditional Geoscience Curriculum: A Laboratory Assignment

    Science.gov (United States)

    Mitra, R.; Cook, G. W.; McNeal, K.

    2014-12-01

    The role of systems thinking in understanding climate change has gained credence over the years. A key concept of systems thinking, namely, stock and flow, deals with the accumulation of any stock in a system over time, such as carbon dioxide in the atmosphere. Several studies have shown that people find it difficult to comprehend the dynamics of such a system. In this study, we design a laboratory module for an introductory earth science course aimed at improving students' understanding of stock-flow concepts. We have structured the laboratory exercise after Bloom's taxonomic principles to include comprehension, application, analysis, synthesis and evaluation. Additionally, we have blended metacognition and self-correction by asking the students to reflect on their learning and by providing cues that enable them to rectify and learn from their own mistakes. We will discuss learning gains for the class, the efficacy of using such scaffolding for laboratory modules and the role of systems thinking in understanding climate change.

  16. Traffic Root Modelling and Assignment with Intelligent Transport System

    OpenAIRE

    Kunicina, Nadezhda; Galkina, Alina; Zabasta, Anatolijs; Patlins, Antons; Kondratjevs, Kaspars

    2014-01-01

    The integration of emergency and specialized transport rooting tools in the usual traffic control paradigms is one of the opportunities offered by modern intelligent traffic control systems. The research is connected with improvement of on – line traffic control and adaptation of special traffic lighting alternatives by ITS The task can be solved with the help of modern technical methods and equipment as well as applying control paradigms of the distributed systems. The problem is solved with...

  17. Neurodynamics-Based Robust Pole Assignment for High-Order Descriptor Systems.

    Science.gov (United States)

    Le, Xinyi; Wang, Jun

    2015-11-01

    In this paper, a neurodynamic optimization approach is proposed for synthesizing high-order descriptor linear systems with state feedback control via robust pole assignment. With a new robustness measure serving as the objective function, the robust eigenstructure assignment problem is formulated as a pseudoconvex optimization problem. A neurodynamic optimization approach is applied and shown to be capable of maximizing the robust stability margin for high-order singular systems with guaranteed optimality and exact pole assignment. Two numerical examples and vehicle vibration control application are discussed to substantiate the efficacy of the proposed approach. PMID:26357408

  18. Multi-input partial eigenvalue assignment for high order control systems with time delay

    Science.gov (United States)

    Zhang, Lei

    2016-05-01

    In this paper, we consider the partial eigenvalue assignment problem for high order control systems with time delay. Ram et al. (2011) [1] have shown that a hybrid method can be used to solve partial quadratic eigenvalue assignment problem of single-input vibratory system. Based on this theory, a rather simple algorithm for solving multi-input partial eigenvalue assignment for high order control systems with time delay is proposed. Our method can assign the expected eigenvalues and keep the no spillover property. The solution can be implemented with only partial information of the eigenvalues and the corresponding eigenvectors of the matrix polynomial. Numerical examples are given to illustrate the efficiency of our approach.

  19. Sufficiency conditions for pole assignment in column-regularizable implicit linear systems

    Czech Academy of Sciences Publication Activity Database

    Korotka, Tetiana; Zagalak, Petr; Loiseau, J. J.; Kučera, V.

    Szczecin: West Pomeranian University of Technology, 2012, s. 457-1-457-6. ISBN 978-1-4673-2123-5. [17th International Conference on Methods and Models in Automation & Robotics . Międzyzdroje (PL), 27.08.2012-30.08.2012] R&D Projects: GA ČR(CZ) GAP103/12/2431 Institutional support: RVO:67985556 Keywords : Linear systems * state feedback * pole assignment Subject RIV: BC - Control Systems Theory http://library.utia.cas.cz/separaty/2012/AS/zagalak-sufficiency conditions for pole assignment in column-regularizable implicit linear systems.pdf

  20. Robust Pole Assignment of Digital Control System with Output Multirate Sampled

    Institute of Scientific and Technical Information of China (English)

    2000-01-01

    Multirate digital control system is a periodically time-variant (PTV)system in its essence. It has many “super capability”, such as obtaining arbitrarily-large gain-margin,simultaneous stabilization, strong stabilization, decentralized control, etc. Utilizing freedom aroused from the multirate sampling of system output, this paper assigns poles of the closedloop system robustly, and so improves the resistance of the system to perturbation.

  1. Weak regularizability and pole assignment for non-square linear systems

    Czech Academy of Sciences Publication Activity Database

    Korotka, Tetiana; Loiseau, J. J.; Zagalak, Petr

    2012-01-01

    Roč. 48, č. 6 (2012), s. 1065-1088. ISSN 0023-5954 R&D Projects: GA ČR GAP103/12/2431 Keywords : linear systems * linear state feedback * pole assignment Subject RIV: BC - Control Systems Theory Impact factor: 0.619, year: 2012 http://library.utia.cas.cz/separaty/2013/AS/korotka-0386325.pdf

  2. Design of multivariable feedback control systems via spectral assignment. [as applied to aircraft flight control

    Science.gov (United States)

    Liberty, S. R.; Mielke, R. R.; Tung, L. J.

    1981-01-01

    Applied research in the area of spectral assignment in multivariable systems is reported. A frequency domain technique for determining the set of all stabilizing controllers for a single feedback loop multivariable system is described. It is shown that decoupling and tracking are achievable using this procedure. The technique is illustrated with a simple example.

  3. Performance of Adaptive Subchannel Assignment-Based MIMO/OFDM Systems over Multipath Fading Channels

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    Adaptive antenna arrays at both the base and mobile stations can further increase system capacity and improve the quality of service of conventional orthogonal frequency division multiplexing (OFDM) systems. Conventional adaptive antenna array-based multiple-input multiple-output (MIMO)/OFDM systems use the sub-carriers characterized by the largest eigenvalue to transmit the OFDM symbols. This paper describes the performance of adaptive subchannel assignment-based MIMO/OFDM systems over multipath fading channels. The system adaptively selects the eigenvectors associated with the relatively large subchannel eigenvalues to generate the antenna array weights at the base and mobile stations and then adaptively assigns the corresponding best subchannels to transmit the OFDM symbols. Simulation results show that the proposed system can achieve better performance than the conventional adaptive antenna array-based MIMO/OFDM system over multipath fading channels.

  4. 42 CFR 433.145 - Assignment of rights to benefits-State plan requirements.

    Science.gov (United States)

    2010-10-01

    ... paternity and in obtaining medical support and payments, unless the individual establishes good cause for not cooperating, and except for individuals described in section 1902(l)(1)(A) of the Act (poverty... cause for not cooperating. (b) A State plan must provide that the requirements for...

  5. An automated framework for NMR resonance assignment through simultaneous slice picking and spin system forming

    KAUST Repository

    Abbas, Ahmed

    2014-04-19

    Despite significant advances in automated nuclear magnetic resonance-based protein structure determination, the high numbers of false positives and false negatives among the peaks selected by fully automated methods remain a problem. These false positives and negatives impair the performance of resonance assignment methods. One of the main reasons for this problem is that the computational research community often considers peak picking and resonance assignment to be two separate problems, whereas spectroscopists use expert knowledge to pick peaks and assign their resonances at the same time. We propose a novel framework that simultaneously conducts slice picking and spin system forming, an essential step in resonance assignment. Our framework then employs a genetic algorithm, directed by both connectivity information and amino acid typing information from the spin systems, to assign the spin systems to residues. The inputs to our framework can be as few as two commonly used spectra, i.e., CBCA(CO)NH and HNCACB. Different from the existing peak picking and resonance assignment methods that treat peaks as the units, our method is based on \\'slices\\', which are one-dimensional vectors in three-dimensional spectra that correspond to certain (N, H) values. Experimental results on both benchmark simulated data sets and four real protein data sets demonstrate that our method significantly outperforms the state-of-the-art methods while using a less number of spectra than those methods. Our method is freely available at http://sfb.kaust.edu.sa/Pages/Software.aspx. © 2014 Springer Science+Business Media.

  6. Sequential P Systems with Unit Rules and Energy Assigned to Membranes

    OpenAIRE

    Freund, Rudolf; Leporati, Alberto; Oswald, Marion; Zandron, Claudio; Research Group on Natural Computing (Universidad de Sevilla) (Coordinador)

    2004-01-01

    We introduce a new variant of membrane systems where the rules are directly assigned to membranes (and not to the regions as this is usually observed in the area of membrane systems) and, moreover, every membrane carries an energy value that can be changed during a computation by objects passing through the membrane. For the application of rules leading from one configuration of the system to the succeeding configuration we consider a sequential model and do not use the model o...

  7. Image acquisition, transmission and assignment in 60Co container inspection system

    International Nuclear Information System (INIS)

    The author describes the data acquisition mode and image reconstruction method in 60Co container inspection system, analyzes the relationship between line pick period and geometry distortion, makes clear the demand to data transmitting rate. It discusses several data communication methods, draws up a plan for network, realizes automatic direction and reasonable assignment of data in the system, cooperation of multi-computer and parallel processing, thus greatly improves the systems inspection efficiency

  8. Ontological Problem-Solving Framework for Assigning Sensor Systems and Algorithms to High-Level Missions

    OpenAIRE

    Russomanno, David J.; Joseph Qualls

    2011-01-01

    The lack of knowledge models to represent sensor systems, algorithms, and missions makes opportunistically discovering a synthesis of systems and algorithms that can satisfy high-level mission specifications impractical. A novel ontological problem-solving framework has been designed that leverages knowledge models describing sensors, algorithms, and high-level missions to facilitate automated inference of assigning systems to subtasks that may satisfy a given mission specification. To demons...

  9. The Impact of Anonymous and Assigned Use of Student Response Systems on Student Achievement

    Science.gov (United States)

    Poole, Dawn

    2012-01-01

    This study examined the impact of two approaches to use of student response systems (SRSs) on achievement in a study designed to better understand effective use of the devices. One condition was anonymous use of SRSs, in which graduate students selected a random clicker when entering the classroom. The second condition assigned devices to students…

  10. Fixed channel assignment in cellular communication systems considering the whole set of packed patterns

    DEFF Research Database (Denmark)

    Borges, Pedro Manuel F. C.; Vidal, Rene Victor Valqui

    2000-01-01

    This paper addresses the problem of fixed channel assignment in cellular communication systems with nonuniform traffic distribution. The objective of the channel assignment is to minimise the average blocking probability. Methods for finding a good allocation can be based on first building a number...... of sets of cochannel cells or allocation patterns and then assigning them to channels. This usually implies that only a subset of the feasible region is attainable. The approach suggested in this paper uses the concept of packed pattern, since all patterns in an optimal solution will be of that kind...... further advantage of flexibility when dealing with extensions to the problem. A neighbouring structure was used, that facilitated the calculations while still allowing for the search in the entire solution space. A summary of extensive numerical experiments is presented. The outcome is an improvement over...

  11. Fixed channel assignment in cellular communication systems considering the whole set of packed patterns

    DEFF Research Database (Denmark)

    Borges, Pedro Manuel F. C.; Vidal, Rene Victor Valqui

    2000-01-01

    This paper addresses the problem of fixed channel assignment in cellular communication systems with nonuniform traffic distribution. The objective of the channel assignment is to minimise the average blocking probability. Methods for finding a good allocation can be based on first building a number...... of sets of cochannel cells or allocation patterns and then assigning them to channels. This usually implies that only a subset of the feasible region is attainable. The approach suggested in this paper uses the concept of packed pattern, since all patterns in an optimal solution will be of that kind....... With a constructive method, the entire set of packed patterns is built and used in the optimisation process. The complexity (large-scale and nonlinearity) of the resulting problem suggested the use of general search procedures (local search, tabu search, simulated annealing, etc.), which have the...

  12. Embedded Library Guides in Learning Management Systems Help Students Get Started on Research Assignments

    Directory of Open Access Journals (Sweden)

    Dominique Daniel

    2016-03-01

    Full Text Available Objective – To determine whether library guides embedded in learning management systems (LMS get used by students, and to identify best practices for the creation and promotion of these guides by librarians. Design – Mixed methods combining quantitative and qualitative data collection and analysis (survey, interviews, and statistical analysis. Setting – A large public university in the United States of America. Subjects – 100 undergraduate students and 14 librarians. Methods – The researchers surveyed undergraduate students who were participating in a Project Information Literacy study about their use of library guides in the learning management system (LMS for a given quarter. At that university, all course pages in the LMS are automatically assigned a library guide. In addition, web usage data about the course-embedded guides was analyzed and high use guides were identified, namely guides that received an average of at least two visits per student enrolled in a course. The researchers also conducted a qualitative analysis of the layout of the high use guides, including the number of widgets (or boxes and links. Finally, librarians who created high use library guides were interviewed. These mixed methods were designed to address four research questions: 1 Were students finding the guides in the LMS, and did they find the guides useful? 2 Did high use guides differ in design and composition? 3 Were the guides designed for a specific course, or for an entire department or college? and, 4 How did the librarians promote use? Main Results – Only 33% of the students said they noticed the library guide in the LMS course page, and 21% reported using the guide. Among those who used the guide, the majority were freshmen (possibly because embedding of library guides in the LMS had just started at the university. Library guides with high use in relation to class enrollment did not significantly differ from low use guides in terms of numbers of

  13. Architecture of a Conference Management System Providing Advanced Paper Assignment Features

    CERN Document Server

    Kalmukov, Yordan

    2011-01-01

    This paper proposes an architecture and assignment management model of a conference management system that performs a precise and accurate automatic assignment of reviewers to papers. The system relies on taxonomy of keywords to describe papers and reviewers' competences. The implied hierarchical structure of the taxonomy provides important additional information - the semantic relationships between the separate keywords. It allows similarity measures to take into account not only the number of exactly matching keywords between a paper and a reviewer, but in case of non-matching ones to calculate how semantically close they are. Reviewers are allowed to bid on the papers they would like to (or not like to) review and to explicitly state conflicts of interest (CoI) with papers. An automatic CoI detection is checking for additional conflicts based on institutional affiliation, co-authorship (within the local database) and previous co-authorship in the past (within the major bibliographic indexes and digital lib...

  14. SRS control system upgrade requirements

    International Nuclear Information System (INIS)

    This document defines requirements for an upgrade of the Sodium Removal System (SRS) control system. The upgrade is being performed to solve a number of maintainability and operability issues. The upgraded system will provide the same functions, controls and interlocks as the present system, and in addition provide enhanced functionality in areas discussed in this document

  15. Storage assignment optimization in a multi-tier shuttle warehousing system

    Science.gov (United States)

    Wang, Yanyan; Mou, Shandong; Wu, Yaohua

    2016-03-01

    The current mathematical models for the storage assignment problem are generally established based on the traveling salesman problem(TSP), which has been widely applied in the conventional automated storage and retrieval system(AS/RS). However, the previous mathematical models in conventional AS/RS do not match multi-tier shuttle warehousing systems(MSWS) because the characteristics of parallel retrieval in multiple tiers and progressive vertical movement destroy the foundation of TSP. In this study, a two-stage open queuing network model in which shuttles and a lift are regarded as servers at different stages is proposed to analyze system performance in the terms of shuttle waiting period (SWP) and lift idle period (LIP) during transaction cycle time. A mean arrival time difference matrix for pairwise stock keeping units(SKUs) is presented to determine the mean waiting time and queue length to optimize the storage assignment problem on the basis of SKU correlation. The decomposition method is applied to analyze the interactions among outbound task time, SWP, and LIP. The ant colony clustering algorithm is designed to determine storage partitions using clustering items. In addition, goods are assigned for storage according to the rearranging permutation and the combination of storage partitions in a 2D plane. This combination is derived based on the analysis results of the queuing network model and on three basic principles. The storage assignment method and its entire optimization algorithm method as applied in a MSWS are verified through a practical engineering project conducted in the tobacco industry. The applying results show that the total SWP and LIP can be reduced effectively to improve the utilization rates of all devices and to increase the throughput of the distribution center.

  16. Robust pole assignment for synthesizing feedback control systems using recurrent neural networks.

    Science.gov (United States)

    Le, Xinyi; Wang, Jun

    2014-02-01

    This paper presents a neurodynamic optimization approach to robust pole assignment for synthesizing linear control systems via state and output feedback. The problem is formulated as a pseudoconvex optimization problem with robustness measure: i.e., the spectral condition number as the objective function and linear matrix equality constraints for exact pole assignment. Two coupled recurrent neural networks are applied for solving the formulated problem in real time. In contrast to existing approaches, the exponential convergence of the proposed neurodynamics to global optimal solutions can be guaranteed even with lower model complexity in terms of the number of variables. Simulation results of the proposed neurodynamic approach for 11 benchmark problems are reported to demonstrate its superiority. PMID:24807036

  17. Business System Planning Project System Requirements Specification

    Energy Technology Data Exchange (ETDEWEB)

    NELSON, R.E.

    2000-09-08

    The purpose of the Business Systems Planning Project System Requirements Specification (SRS) is to provide the outline and contents of the requirements for the CH2M HILL Hanford Group, Inc. (CHG) integrated business and technical information systems. The SRS will translate proposed objectives into the statement of the functions that are to be performed and data and information flows that they require. The requirements gathering methodology will use (1) facilitated group requirement sessions; (2) individual interviews; (3) surveys; and (4) document reviews. The requirements will be verified and validated through coordination of the technical requirement team and CHG Managers. The SRS document used the content and format specified in Lockheed Martin Services, Inc. Organization Standard Software Practices in conjunction with the Institute of Electrical and Electronics Engineers Standard 8340-1984 for Systems Requirements Documents.

  18. Spreading Code Assignment Strategies for MIMO-CDMA Systems Operating in Frequency-Selective Channels

    Directory of Open Access Journals (Sweden)

    Claude D'Amours

    2009-01-01

    Full Text Available Code Division Multiple Access (CDMA and multiple input multiple output- (MIMO- CDMA systems suffer from multiple access interference (MAI which limits the spectral efficiency of these systems. By making these systems more power efficient, we can increase the overall spectral efficiency. This can be achieved through the use of improved modulation and coding techniques. Conventional MIMO-CDMA systems use fixed spreading code assignments. By strategically selecting the spreading codes as a function of the data to be transmitted, we can achieve coding gain and introduce additional degrees of freedom in the decision variables at the output of the matched filters. In this paper, we examine the bit error rate performance of parity bit-selected spreading and permutation spreading under different wireless channel conditions. A suboptimal detection technique based on maximum likelihood detection is proposed for these systems operating in frequency selective channels. Simulation results demonstrate that these code assignment techniques provide an improvement in performance in terms of bit error rate (BER while providing increased spectral efficiency compared to the conventional system. Moreover, the proposed strategies are more robust to channel estimation errors as well as spatial correlation.

  19. Spreading Code Assignment Strategies for MIMO-CDMA Systems Operating in Frequency-Selective Channels

    Directory of Open Access Journals (Sweden)

    Dahmane AdelOmar

    2009-01-01

    Full Text Available Abstract Code Division Multiple Access (CDMA and multiple input multiple output- (MIMO- CDMA systems suffer from multiple access interference (MAI which limits the spectral efficiency of these systems. By making these systems more power efficient, we can increase the overall spectral efficiency. This can be achieved through the use of improved modulation and coding techniques. Conventional MIMO-CDMA systems use fixed spreading code assignments. By strategically selecting the spreading codes as a function of the data to be transmitted, we can achieve coding gain and introduce additional degrees of freedom in the decision variables at the output of the matched filters. In this paper, we examine the bit error rate performance of parity bit-selected spreading and permutation spreading under different wireless channel conditions. A suboptimal detection technique based on maximum likelihood detection is proposed for these systems operating in frequency selective channels. Simulation results demonstrate that these code assignment techniques provide an improvement in performance in terms of bit error rate (BER while providing increased spectral efficiency compared to the conventional system. Moreover, the proposed strategies are more robust to channel estimation errors as well as spatial correlation.

  20. Managing System of Systems Requirements with a Requirements Screening Group

    Energy Technology Data Exchange (ETDEWEB)

    Ronald R. Barden

    2012-07-01

    Figuring out an effective and efficient way to manage not only your Requirement’s Baseline, but also the development of all your individual requirements during a Program’s/Project’s Conceptual and Development Life Cycle Stages can be both daunting and difficult. This is especially so when you are dealing with a complex and large System of Systems (SoS) Program with potentially thousands and thousands of Top Level Requirements as well as an equal number of lower level System, Subsystem and Configuration Item requirements that need to be managed. This task is made even more overwhelming when you have to add in integration with multiple requirements’ development teams (e.g., Integrated Product Development Teams (IPTs)) and/or numerous System/Subsystem Design Teams. One solution for tackling this difficult activity on a recent large System of Systems Program was to develop and make use of a Requirements Screening Group (RSG). This group is essentially a Team made up of co-chairs from the various Stakeholders with an interest in the Program of record that are enabled and accountable for Requirements Development on the Program/Project. The RSG co-chairs, often with the help of individual support team, work together as a Program Board to monitor, make decisions on, and provide guidance on all Requirements Development activities during the Conceptual and Development Life Cycle Stages of a Program/Project. In addition, the RSG can establish and maintain the Requirements Baseline, monitor and enforce requirements traceability across the entire Program, and work with other elements of the Program/Project to ensure integration and coordination.

  1. Optimal Server Assignment in Multi-Server Queueing Systems with Random Connectivities

    CERN Document Server

    Halabian, Hassan; Lung, Chung-Horng

    2011-01-01

    In this paper, we investigate the problem of assignment of $K$ identical servers to a set of $N$ parallel queues in a time slotted queueing system. The connectivity of each queue to each server is randomly changing with time; each server can serve at most one queue and each queue can be served by at most one server per time slot. Such multi-server queueing systems were widely applied in modeling the scheduling (or resource allocation) problem in wireless networks. It has been previously proven that Maximum Weighted Matching (MWM) is a throughput optimal server assignment policy for such queueing systems. In this paper, first we prove that for a symmetric system with i.i.d. Bernoulli packet arrivals and connectivities, MWM minimizes, in stochastic ordering sense, a broad range of cost functions of the queue lengths including total queue occupancy (or equivalently minimizes the average queueing delay). Then, we extend the model by considering imperfect services where it is assumed that the service of a schedule...

  2. Power Assigning Method for Increasing the Number of Users in Time-spreading Optical CDMA Systems

    Science.gov (United States)

    Salehi, Mohammad Reza; Abiri, Ebrahim; Kazemi, Keyvan; Dezfouli, Mehran

    2011-04-01

    In this paper, a method for increasing the number of supportable users in a time-spreading Optical code division multiple access (OCDMA) system is proposed. In the presented technique, a unique codeword is assigned to a couple of users instead of just one. Different optical powers are employed for such users in order to distinguish them from each other. Other methods use the frequency or the polarization of the optical signals as an additional coding dimension to increase the number of codewords and hence the number of users in the network. It is proposed to employ nonlinear optical regenerators for separating optical pulses with different powers. A comprehensive design algorithm for such regenerators is presented. In order to evaluate the performance of the designed regenerators a TS-OCDMA system is simulated using OptiSystem software. Results indicate an error free transmission in the system employing the proposed technique.

  3. Quadratic partial eigenvalue assignment in large-scale stochastic dynamic systems for resilient and economic design

    Science.gov (United States)

    Das, S.; Goswami, K.; Datta, B. N.

    2016-05-01

    Failure of structural systems under dynamic loading can be prevented via active vibration control which shifts the damped natural frequencies of the systems away from the dominant range of a loading spectrum. The damped natural frequencies and the dynamic load typically show significant variations in practice. A computationally efficient methodology based on quadratic partial eigenvalue assignment technique and optimization under uncertainty has been formulated in the present work that will rigorously account for these variations and result in economic and resilient design of structures. A novel scheme based on hierarchical clustering and importance sampling is also developed in this work for accurate and efficient estimation of probability of failure to guarantee the desired resilience level of the designed system. Finally the most robust set of feedback matrices is selected from the set of probabilistically characterized optimal closed-loop system to implement the new methodology for design of active controlled structures. Numerical examples are presented to illustrate the proposed methodology.

  4. Eigenvalue assignment based on standard characteristic polynominal in design of aircraft control systems

    Science.gov (United States)

    Li, Aijun; Lv, Yang; Wang, Changqing

    2008-10-01

    Design method of eigenvalue assignment based on standard characteristic polynomial, as well as mathematical solving process of the method, is proposed in this paper so as to resolve the uncertainty of ideal eigenvalue choice in modern control theory and the difficultly in engineering implementation of modern control system design methods. Longitudinal stability holding control system of an aircraft was designed and simulated by employing proposed method. Dynamic character and robust performance simulation of the system are given. Simulation results show that the method achieves the control quality and has better robustness than another method. There is only one design parameter which is easy to calculate. So, the method is characterized as simple design, logical structure, easy programming and convenient for engineering implementation.

  5. Quadratic partial eigenvalue assignment in large-scale stochastic dynamic systems for resilient and economic design

    International Nuclear Information System (INIS)

    Failure of structural systems under dynamic loading can be prevented via active vibration control which shifts the damped natural frequencies of the systems away from the dominant range of loading spectrum. The damped natural frequencies and the dynamic load typically show significant variations in practice. A computationally efficient methodology based on quadratic partial eigenvalue assignment technique and optimization under uncertainty has been formulated in the present work that will rigorously account for these variations and result in an economic and resilient design of structures. A novel scheme based on hierarchical clustering and importance sampling is also developed in this work for accurate and efficient estimation of probability of failure to guarantee the desired resilience level of the designed system. Numerical examples are presented to illustrate the proposed methodology

  6. Quality System Requirements QS-9000

    CERN Document Server

    The Automotive Industry Action Group. Detroit

    QS-9000 is the shorthand name for "Quality System Requirements QS-9000." It is the common supplier quality standard for DaimlerChrysler Corporation, Ford Motor Company, and General Motors Corporation. QS-9000 is based on the 1994 edition of ISO 9001, requirements that are particular to the automotive industry. These additions are considered automotive "interpretations" by the ISO community of accreditation bodies and registrars.

  7. FPGA-Based Laboratory Assignments for NoC-Based Manycore Systems

    Science.gov (United States)

    Ttofis, C.; Theocharides, T.; Michael, M. K.

    2012-01-01

    Manycore systems have emerged as being one of the dominant architectural trends in next-generation computer systems. These highly parallel systems are expected to be interconnected via packet-based networks-on-chip (NoC). The complexity of such systems poses novel and exciting challenges in academia, as teaching their design requires the students…

  8. Particle swarm optimization algorithm for optimizing assignment of blood in blood banking system.

    Science.gov (United States)

    Olusanya, Micheal O; Arasomwan, Martins A; Adewumi, Aderemi O

    2015-01-01

    This paper reports the performance of particle swarm optimization (PSO) for the assignment of blood to meet patients' blood transfusion requests for blood transfusion. While the drive for blood donation lingers, there is need for effective and efficient management of available blood in blood banking systems. Moreover, inherent danger of transfusing wrong blood types to patients, unnecessary importation of blood units from external sources, and wastage of blood products due to nonusage necessitate the development of mathematical models and techniques for effective handling of blood distribution among available blood types in order to minimize wastages and importation from external sources. This gives rise to the blood assignment problem (BAP) introduced recently in literature. We propose a queue and multiple knapsack models with PSO-based solution to address this challenge. Simulation is based on sets of randomly generated data that mimic real-world population distribution of blood types. Results obtained show the efficiency of the proposed algorithm for BAP with no blood units wasted and very low importation, where necessary, from outside the blood bank. The result therefore can serve as a benchmark and basis for decision support tools for real-life deployment. PMID:25815046

  9. A User Equilibrium Assignment Flow Model for Multiairport Open Network System

    Directory of Open Access Journals (Sweden)

    Honghai Zhang

    2015-01-01

    Full Text Available To reduce flight delays and promote fairness in air traffic management, we study the imbalance problem between supply and demand in airport network system from the view of both the system and the users. First, we establish an open multiairport oriented network flow system with the correlation between the arrival and departure in capacity-constrained airports, as well as the relevance between multiairports united flights. Then, based on the efficiency rationing principle, we propose an optimization model to reassign flow with user equilibrium constraints. These constraints include Gini coefficient, system capacity, and united flights. The model minimizes the total flight delay cost of capacity-constrained airports in the network system. We also introduce some evaluation indexes to quantitatively analyze fairness among airlines. Finally, with an open multiairport network system and its actual flights data in China, the model is verified. Test results show that the model can be used to coordinate and optimize matching the flow and capacity in the multiairport, make full use of the capacity of airports, and minimize the system delays. The findings can provide a powerful reference of developing scientific and rational assignment strategy for air traffic controllers.

  10. Johnson Noise Thermometry System Requirements

    Energy Technology Data Exchange (ETDEWEB)

    Britton Jr, Charles L [ORNL; Roberts, Michael [ORNL; Ezell, N Dianne Bull [ORNL; Qualls, A L [ORNL; Holcomb, David Eugene [ORNL

    2013-01-01

    This document is intended to capture the requirements for the architecture of the developmental electronics for the ORNL-lead drift-free Johnson Noise Thermometry (JNT) project conducted under the Instrumentation, Controls, and Human-Machine Interface (ICHMI) research pathway of the U.S. Department of Energy (DOE) Advanced Small Modular Reactor (SMR) Research and Development (R&D) program. The requirements include not only the performance of the system but also the allowable measurement environment of the probe and the allowable physical environment of the associated electronics. A more extensive project background including the project rationale is available in the initial project report [1].

  11. Requirements and information metadata system

    OpenAIRE

    Beckman, Erin M.

    2007-01-01

    CHDS State/Local This thesis proposes an adoption of a data schema called RIMS (Requirements and Information Metadata System) developed as a pilot project in the Pittsburgh Field Office of the FBI and sets out to determine if RIMS could be an effective and efficient method to capture, catalogue and retrieve intelligence information within the Federal Bureau of Investigation (FBI). RIMS would enhance the search platform used by FBI analysts and investigators who gather or data mine exi...

  12. Design of multivariable feedback control systems via spectral assignment using reduced-order models and reduced-order observers

    Science.gov (United States)

    Mielke, R. R.; Tung, L. J.; Carraway, P. I., III

    1985-01-01

    The feasibility of using reduced order models and reduced order observers with eigenvalue/eigenvector assignment procedures is investigated. A review of spectral assignment synthesis procedures is presented. Then, a reduced order model which retains essential system characteristics is formulated. A constant state feedback matrix which assigns desired closed loop eigenvalues and approximates specified closed loop eigenvectors is calculated for the reduced order model. It is shown that the eigenvalue and eigenvector assignments made in the reduced order system are retained when the feedback matrix is implemented about the full order system. In addition, those modes and associated eigenvectors which are not included in the reduced order model remain unchanged in the closed loop full order system. The fulll state feedback design is then implemented by using a reduced order observer. It is shown that the eigenvalue and eigenvector assignments of the closed loop full order system remain unchanged when a reduced order observer is used. The design procedure is illustrated by an actual design problem.

  13. Travel Demand-Based Assignment Model for Multimodal and Multiuser Transportation System

    Directory of Open Access Journals (Sweden)

    Bingfeng Si

    2012-01-01

    Full Text Available In this paper, the structural characteristic of urban multimodal transport system is fully analyzed and then a two-tier network structure is proposed to describe such a system, in which the first-tier network is used to depict the traveller’s mode choice behaviour and the second-tier network is used to depict the vehicle routing when a certain mode has been selected. Subsequently, the generalized travel cost is formulated considering the properties of both traveller and transport mode. A new link impedance function is proposed, in which the interferences between different vehicle flows are taken into account. Simultaneously, the bi-equilibrium patterns for multimodal transport network are proposed by extending Wardrop principle. Correspondingly, a bi-level programming model is then presented to describe the bi-equilibrium based assignment for multi-class multimodal transport network. The solution algorithm is also given. Finally, a numerical example is provided to illustrate the model and algorithm.

  14. Space systems requirements and issues

    International Nuclear Information System (INIS)

    This paper describes some of the more important space power technology issues, requirements and challenges as we enter the decade of the 1990's and provided an assessment of the impact of new component technology on the overall performance of space power systems. The paper emphasizes advanced component, subsystem and system technologies which will make a difference for the future in terms of the performance, reliability and survivability of next generation baseload and burst mode space power systems. The paper primarily addresses technology disciplines related to power sources (solar/nuclear and chemical), power conversion, energy storage, power conditioning/distribution and control and waste heat acquisition, transport and rejection. For some of these technology disciplines, performance trends are developed which can be used as the basis for projecting future, advanced power system performance. Performance capabilities for several different types of space power systems for both baseload and burst mode applications are postulated based on evolving technology and point designs which incorporate projections of advanced component capabilities

  15. Analysis and design of a cooperative weapon assignment module for advanced battle manager of a ballistic missile defense system

    OpenAIRE

    Brown, Willie D.

    2006-01-01

    The United States is in the midst of an ambitious effort to build and deploy a wide range of ballistic missile defense systems. These ballistic missile defense systems will be effective against a host of current and postulated threats from ballistic missiles. In this thesis study, we explore the process of enhancing the effectiveness of weapon assignment for a system of systems. First, analysis of information is drawn from current proposed system of the ABM and its construction from the ...

  16. JEMs and incompatible occupational coding systems: Effect of manual and automatic recoding of job codes on exposure assignment

    NARCIS (Netherlands)

    Koeman, T.; Offermans, N.S.M.; Christopher-De Vries, Y.; Slottje, P.; Brandt, P.A. van den; Goldbohm, R.A.; Kromhout, H.; Vermeulen, R.

    2013-01-01

    Background: In epidemiological studies, occupational exposure estimates are often assigned through linkage of job histories to job-exposure matrices (JEMs). However, available JEMs may have a coding system incompatible with the coding system used to code the job histories, necessitating a translatio

  17. The adaptive approach for storage assignment by mining data of warehouse management system for distribution centres

    Science.gov (United States)

    Ming-Huang Chiang, David; Lin, Chia-Ping; Chen, Mu-Chen

    2011-05-01

    Among distribution centre operations, order picking has been reported to be the most labour-intensive activity. Sophisticated storage assignment policies adopted to reduce the travel distance of order picking have been explored in the literature. Unfortunately, previous research has been devoted to locating entire products from scratch. Instead, this study intends to propose an adaptive approach, a Data Mining-based Storage Assignment approach (DMSA), to find the optimal storage assignment for newly delivered products that need to be put away when there is vacant shelf space in a distribution centre. In the DMSA, a new association index (AIX) is developed to evaluate the fitness between the put away products and the unassigned storage locations by applying association rule mining. With AIX, the storage location assignment problem (SLAP) can be formulated and solved as a binary integer programming. To evaluate the performance of DMSA, a real-world order database of a distribution centre is obtained and used to compare the results from DMSA with a random assignment approach. It turns out that DMSA outperforms random assignment as the number of put away products and the proportion of put away products with high turnover rates increase.

  18. 77 FR 70484 - Preoperational Testing of Onsite Electric Power Systems To Verify Proper Load Group Assignments...

    Science.gov (United States)

    2012-11-26

    ... encompass preoperational testing of electrical power systems used to meet current Station Blackout... all alternating current power (Station Blackout) and loss of large areas of the plant due to... regulatory requirements addressing Station Blackout and loss of large areas of the plant due to explosions...

  19. Method and system for assigning a confidence metric for automated determination of optic disc location

    Science.gov (United States)

    Karnowski, Thomas P.; Tobin, Jr., Kenneth W.; Muthusamy Govindasamy, Vijaya Priya; Chaum, Edward

    2012-07-10

    A method for assigning a confidence metric for automated determination of optic disc location that includes analyzing a retinal image and determining at least two sets of coordinates locating an optic disc in the retinal image. The sets of coordinates can be determined using first and second image analysis techniques that are different from one another. An accuracy parameter can be calculated and compared to a primary risk cut-off value. A high confidence level can be assigned to the retinal image if the accuracy parameter is less than the primary risk cut-off value and a low confidence level can be assigned to the retinal image if the accuracy parameter is greater than the primary risk cut-off value. The primary risk cut-off value being selected to represent an acceptable risk of misdiagnosis of a disease having retinal manifestations by the automated technique.

  20. Development and Simulation of a Task Assignment Model for Multirobot Systems

    OpenAIRE

    Biswal, B. B.; B.B.Choudhury

    2007-01-01

    Multirobot systems (MRS) hold the promise of improved performance and increased fault tolerance for large-scale problems. A robot team can accomplish a given task more quickly than a single agent by executing them concurrently. A team can also make effective use of specialists designed for a single purpose rather than requiring that a single robot be a generalist. Multirobot coordination, however, is a complex problem. An empirical study is described in the present paper that sought general g...

  1. Note. Optimal Storage Assignment Policies for Automated Storage and Retrieval Systems with Stochastic Demands

    OpenAIRE

    Ulrich W. Thonemann; Brandeau, Margaret L.

    1998-01-01

    In existing AS/RS research, storage assignment policies are evaluated based on the probability that item type j will be stored (and subsequently retrieved). This note applies the turnover-based and class-based assignment policies of Hausman et al. (1976) to a stochastic environment by identifying the kth pallet of item type j: Frequently demanded pallets are stored close to the input/output point and rarely demanded pallets are stored at the end of the storage rack. We consider a discrete sto...

  2. Artificial intelligence applied to assigned merchandise location in retail sales systems

    Directory of Open Access Journals (Sweden)

    Cruz-Domínguez, O.

    2016-05-01

    Full Text Available This paper presents an option for improving the process of assigning storage locations for merchandise in a warehouse. A disadvantage of policies in the literature is that the merchandise is assigned allocation only according to the volume of sales and the rotation it presents. However, in some cases it is necessary to deal with other aspects such as family group membership, the physical characteristics of the products, and their sales pattern to design an integral policy. This paper presents an alternative to the afore- mentioned process using Flexsim®, artificial neural networks, and genetic algorithms.

  3. A conceptual system for assigning sensitivities to potentially acidifying inputs to soils in the oil sands region of Alberta

    International Nuclear Information System (INIS)

    Concerns have been raised about the possible cumulative effects on the boreal ecosystem of potentially acidifying inputs released in the region because of the proliferation of active, approved and planned oil sand developments. A concern is the sensitivities of the various organic and mineral soils in the area to continued acidifying inputs. The development of an approach for assigning relative sensitivity classes of low, moderate and high to regional soils is outlined, and the results of applying the method to a particular emissions scenario are illustrated. Because the method is qualitative only, its greatest use consists in indicating which soils have the greatest potential susceptibility to acidification, both with respect to specific soil series and geographical location: the soils so identified might be candidates for inclusion in future monitoring programs. The approach requires verification and refinement by ongoing field work and sensitivity modelling to enhance the level of confidence in its accuracy. Given the spatial extent, relative inaccessibility, and limited soil data available for the boreal forest, an empirical rating system of this kind offers the most practical tool for determining the potential impacts of emissions in the area. (Abstract only)

  4. Development and Simulation of a Task Assignment Model for Multirobot Systems

    Directory of Open Access Journals (Sweden)

    B.B.Biswal

    2007-08-01

    Full Text Available Multirobot systems (MRS hold the promise of improved performance and increased fault tolerance for large-scale problems. A robot team can accomplish a given task more quickly than a single agent by executing them concurrently. A team can also make effective use of specialists designed for a single purpose rather than requiring that a single robot be a generalist. Multirobot coordination, however, is a complex problem. An empirical study is described in the present paper that sought general guidelines for task allocation strategies. Different task allocation strategies are identified, and demonstrated in the multi-robot environment. A simulation study of the methodology is carried out in a simulated grid world. The results show that there is no single strategy that produces best performance in all cases, and that the best task allocation strategy changes as a function of the noise in the system. This result is significant, and shows the need for further investigation of task allocation strategies.

  5. TEO: an online emotional therapy system to apply homework assignments in the Treatment of adjustment disorders

    OpenAIRE

    Quero Castellano, Soledad; Botella Arbona, Cristina; Pérez Ara, María Ángeles; Andreu Mateu, Maria Sabrina; Baños Rivera, Rosa María; Castilla López, Diana Virginia

    2011-01-01

    Adjustment Disorders (AD) are a very important public health problem. Regarding its treatment, only a series of general guidelines are available. Our research team has developed a cognitive-behavioral treatment (CBT) supported by Virtual Reality (VR) that has shown its utility in the treatment of AD. A CBT approach gives a crucial role to homework assignments. So far, studies that use Information and Communication Technologies (ICT) for psychological treatments have been ...

  6. Polynomial Assignments

    OpenAIRE

    Guillemin, Victor; Sabatini, Silvia; Zara, Catalin

    2013-01-01

    The concept of assignments was introduced in [GGK99] as a method for extracting geometric information about group actions on manifolds from combinatorial data encoded in the infinitesimal orbit-type stratification. In this paper we will answer in the affirmative a question posed in [GGK99] by showing that the equivariant cohomology ring of $M$ is to a large extent determined by this data.

  7. Towards a proper assignment of systemic risk: the combined roles of network topology and shock characteristics.

    Directory of Open Access Journals (Sweden)

    Lasse Loepfe

    Full Text Available The 2007-2008 financial crisis solidified the consensus among policymakers that a macro-prudential approach to regulation and supervision should be adopted. The currently preferred policy option is the regulation of capital requirements, with the main focus on combating procyclicality and on identifying the banks that have a high systemic importance, those that are "too big to fail". Here we argue that the concept of systemic risk should include the analysis of the system as a whole and we explore systematically the most important properties for policy purposes of networks topology on resistance to shocks. In a thorough study going from analytical models to empirical data, we show two sharp transitions from safe to risky regimes: 1 diversification becomes harmful with just a small fraction (~2% of the shocks sampled from a fat tailed shock distributions and 2 when large shocks are present a critical link density exists where an effective giant cluster forms and most firms become vulnerable. This threshold depends on the network topology, especially on modularity. Firm size heterogeneity has important but diverse effects that are heavily dependent on shock characteristics. Similarly, degree heterogeneity increases vulnerability only when shocks are directed at the most connected firms. Furthermore, by studying the structure of the core of the transnational corporation network from real data, we show that its stability could be clearly increased by removing some of the links with highest centrality betweenness. Our results provide a novel insight and arguments for policy makers to focus surveillance on the connections between firms, in addition to capital requirements directed at the nodes.

  8. Matching ERP System Functionality to Customer Requirements

    OpenAIRE

    Rolland, Colette; Prakash, Naveen

    2001-01-01

    International audience Although procuring Enterprise Resource Planning systems from commercial suppliers is becoming increasingly popular in our industry, fitting those systems to customer requirements remains problematic. In this paper, we propose an approach for matching ERP system functionality to customer requirements. The assumption made is that the ERP system postulates a set of requirements that are worth eliciting from the ERP documentation as abstractions of the ERP system functio...

  9. Improvement of the abnormal diagnosis technology by the development of an abnormal parts assignment system for the engineered safety features actuating system of the HTTR

    International Nuclear Information System (INIS)

    The safety protection sequence panel of HTTR is a control panel to actuate an engineering safety system for protecting the reactor core, reactor coolant pressure boundary, and containment vessel boundary at the time of an accident of the nuclear reactor facilities. The safety code stipulates that the control panel should receive safety check at a frequency of once a month during reactor operation. When abnormality has been found, it is required to eliminate its causes and restore normal operation as soon as possible. However, since this control panel is composed of a complex control circuit, the cause check during abnormality requires the confirmation by a knowledgeable person spending quite a lot of time for chart checking, which leads to a delay of restoration. To achieve a rapid restoration, the abnormal part assignment system (APAS), which can specify abnormality instantaneously even by a common operator, was developed. It has been confirmed that with this system, rapid initial response and prompt restoration can be effectively made. (A.O.)

  10. Requirements analysis and system design

    CERN Document Server

    Maciaszek, Leszek A

    2007-01-01

    An examination of the methods and techniques used in the analysis and design phases of Information System development. Emphasis is placed upon the application of object technology in enterprise information systems (EIS) with UML being used throughout. Through its excellent balance of practical explanation and theoretical insight the book manages to avoid unnecessary, complicating details without sacrificing rigor. Examples of real-world scenarios are used throughout, giving the reader an understanding of what really goes on within the field of Software Engineering.

  11. Requirements Analysis for Information-Intensive Systems

    Science.gov (United States)

    Callender, E. D.; Hartsough, C.; Morris, R. V.; Yamamoto, Y.

    1986-01-01

    Report discusses role of requirements analysis in development of information-intensive systems. System examined from variety of human viewpoints during design, development, and implementation. Such examination, called requirements analysis, ensures system simultaneously meets number of distinct but interacting needs. Viewpoints defined and integrated to help attain objectives.

  12. Nonfunctional requirements in systems analysis and design

    CERN Document Server

    Adams, Kevin MacG

    2015-01-01

    This book will help readers gain a solid understanding of non-functional requirements inherent in systems design endeavors. It contains essential information for those who design, use, and maintain complex engineered systems, including experienced designers, teachers of design, system stakeholders, and practicing engineers. Coverage approaches non-functional requirements in a novel way by presenting a framework of four systems concerns into which the 27 major non-functional requirements fall: sustainment, design, adaptation, and viability. Within this model, the text proceeds to define each non-functional requirement, to specify how each is treated as an element of the system design process, and to develop an associated metric for their evaluation. Systems are designed to meet specific functional needs. Because non-functional requirements are not directly related to tasks that satisfy these proposed needs, designers and stakeholders often fail to recognize the importance of such attributes as availability, su...

  13. Systemic transport of Alfalfa mosaic virus can be mediated by the movement proteins of several viruses assigned to five genera of the 30K family.

    Science.gov (United States)

    Fajardo, Thor V M; Peiró, Ana; Pallás, Vicente; Sánchez-Navarro, Jesús

    2013-03-01

    We previously showed that the movement protein (MP) gene of Alfalfa mosaic virus (AMV) is functionally exchangeable for the cell-to-cell transport of the corresponding genes of Tobacco mosaic virus (TMV), Brome mosaic virus, Prunus necrotic ringspot virus, Cucumber mosaic virus and Cowpea mosaic virus. We have analysed the capacity of the heterologous MPs to systemically transport the corresponding chimeric AMV genome. All MPs were competent in systemic transport but required the fusion at their C terminus of the coat protein-interacting C-terminal 44 aa (A44) of the AMV MP. Except for the TMV MP, the presence of the hybrid virus in upper leaves correlated with the capacity to move locally. These results suggest that all the MPs assigned to the 30K superfamily should be exchangeable not only for local virus movement but also for systemic transport when the A44 fragment is present. PMID:23136366

  14. Herausforderungen fuer das Requirements Engineering eingebetteter Systeme

    OpenAIRE

    Andreas Fleischmann; Eva Geisberger; Markus Pister

    2016-01-01

    Abstract: In diesem Bericht werden in kompakter Form die spezifischen Problemstellungen und Herausforderungen bei der Entwicklung Eingebetteter Systeme aufgezeigt und die entsprechenden Anforderungen an das Requirements Engineering definiert. Der Bericht ist Teilergebnis des REFOCUS Projekts am Lehrstuhl von Professor Broy, in dem eine durchgehende Methodik fuer das Requirements Engineering Eingebetteter Systeme entworfen wird.

  15. Maintainability program requirements for space systems

    Science.gov (United States)

    1987-01-01

    This document is established to provide common general requirements for all NASA programs to: design maintainability into all systems where maintenance is a factor in system operation and mission success; and ensure that maintainability characteristics are developed through the systems engineering process. These requirements are not new. Design for ease of maintenance and minimization of repair time have always been fundamental requirements of the systems engineering process. However, new or reusable orbital manned and in-flight maintainable unmanned space systems demand special emphasis on maintainability, and this document has been prepared to meet that need. Maintainability requirements on many NASA programs differ in phasing and task emphasis from requirements promulgated by other Government agencies. This difference is due to the research and development nature of NASA programs where quantities produced are generally small; therefore, the depth of logistics support typical of many programs is generally not warranted. The cost of excessive maintenance is very high due to the logistics problems associated with the space environment. The ability to provide timely maintenance often involves safety considerations for manned space flight applications. This document represents a basic set of requirements that will achieve a design for maintenance. These requirements are directed primarily at manned and unmanned orbital space systems. To be effective, maintainability requirements should be tailored to meet specific NASA program and project needs and constraints. NASA activities shall invoke the requirements of this document consistent with program planning in procurements or on inhouse development efforts.

  16. Management system requirements for small reactors

    International Nuclear Information System (INIS)

    This abstract identifies the management system requirements for the life cycle of small reactors from initial conception through completion of decommissioning. For small reactors, the requirements for management systems remain the same as those for 'large' reactors regardless of the licensee' business model and objectives. The CSA N-Series of standards provides an interlinked set of requirements for the management of nuclear facilities. CSA N286 provides overall direction to management to develop and implement sound management practices and controls, while other CSA nuclear standards provide technical requirements and guidance that support the management system. CSA N286 is based on a set of principles. The principles are then supported by generic requirements that are applicable to the life cycle of nuclear facilities. CNSC regulatory documents provide further technical requirements and guidance. (author)

  17. Fleet Assignment Using Collective Intelligence

    Science.gov (United States)

    Antoine, Nicolas E.; Bieniawski, Stefan R.; Kroo, Ilan M.; Wolpert, David H.

    2004-01-01

    Product distribution theory is a new collective intelligence-based framework for analyzing and controlling distributed systems. Its usefulness in distributed stochastic optimization is illustrated here through an airline fleet assignment problem. This problem involves the allocation of aircraft to a set of flights legs in order to meet passenger demand, while satisfying a variety of linear and non-linear constraints. Over the course of the day, the routing of each aircraft is determined in order to minimize the number of required flights for a given fleet. The associated flow continuity and aircraft count constraints have led researchers to focus on obtaining quasi-optimal solutions, especially at larger scales. In this paper, the authors propose the application of this new stochastic optimization algorithm to a non-linear objective cold start fleet assignment problem. Results show that the optimizer can successfully solve such highly-constrained problems (130 variables, 184 constraints).

  18. A User Equilibrium Assignment Flow Model for Multiairport Open Network System

    OpenAIRE

    Honghai Zhang; Qiqian Zhang; Lei Yang

    2015-01-01

    To reduce flight delays and promote fairness in air traffic management, we study the imbalance problem between supply and demand in airport network system from the view of both the system and the users. First, we establish an open multiairport oriented network flow system with the correlation between the arrival and departure in capacity-constrained airports, as well as the relevance between multiairports united flights. Then, based on the efficiency rationing principle, we propose an optimiz...

  19. Identifying dependability requirements for space software systems

    Directory of Open Access Journals (Sweden)

    Edgar Toshiro Yano

    2010-09-01

    Full Text Available Computer systems are increasingly used in space, whether in launch vehicles, satellites, ground support and payload systems. Software applications used in these systems have become more complex, mainly due to the high number of features to be met, thus contributing to a greater probability of hazards related to software faults. Therefore, it is fundamental that the specification activity of requirements have a decisive role in the effort of obtaining systems with high quality and safety standards. In critical systems like the embedded software of the Brazilian Satellite Launcher, ambiguity, non-completeness, and lack of good requirements can cause serious accidents with economic, material and human losses. One way to assure quality with safety, reliability and other dependability attributes may be the use of safety analysis techniques during the initial phases of the project in order to identify the most adequate dependability requirements to minimize possible fault or failure occurrences during the subsequent phases. This paper presents a structured software dependability requirements analysis process that uses system software requirement specifications and traditional safety analysis techniques. The main goal of the process is to help to identify a set of essential software dependability requirements which can be added to the software requirement previously specified for the system. The final results are more complete, consistent, and reliable specifications.

  20. Enhancing Food and Nutrition Curricula in Higher Education by Assigning Collaborative Food System Assessment Projects

    Science.gov (United States)

    Matthews, June

    2013-01-01

    Student engagement in higher education is important. Some professional healthcare programs, however, can become quite focused and competitive, limiting the potential for positive student engagement and for students to see how their field of study fits within larger systems. Food system assessments are an ideal way to see the interconnectedness of…

  1. Integrated Requirements Management System and System Design Description

    International Nuclear Information System (INIS)

    This document provides a System Design Description (SDD) for the Integrated Requirements Management System (IRMS) database. The database manager chosen for this task was the Dynamic Object Oriented Requirements System (DOORS) Version 5.0 or greater. The schema for the IRMS is described with respect to the CH2M Hill Hanford Group, Inc requirements management processes

  2. Interactive Assignments for Online Students

    Directory of Open Access Journals (Sweden)

    Pam Lowry

    2009-04-01

    Full Text Available Students can experience first hand through interactive assignments what is involved in teaching an online course. Most students develop a whole new appreciation for the student learning process. Faculty are beginning to realize that online instruction is more than a series of readings posted to a course management system. This paper summarizes the faculty member's instructional strategies involved when creating student interaction assignments. The paper also summarizes the assignments, discussion board, and trends in education from the student's perspective. In summary, it concludes with the faculty's overall perspective concerning these assignments and how the assignments could be more effective for the student.

  3. Example of a Graded Approach to the Application of Management System Requirements for a Research Reactor. Annex II

    International Nuclear Information System (INIS)

    The research reactor installation is divided into structure, systems and components, each comprising items, services and processes. Factors with a significance to nuclear safety, reliability, complexity, design and experience are determined and a quality grade (A, B, C, D) is assigned to each structure, system or component. The quality grade is obtained by applying the results of a qualification formula and the criteria from Assignation of Quality Grades described below. The management system defines applicable requirements for each quality grade.

  4. Cyber security level assignment for research reactor digital instrumentation and control system architecture using concept of defense in depth

    International Nuclear Information System (INIS)

    Due to recent aging of the analog instrumentation of many nuclear power plants (NPPs) and research reactors, the system reliability decreases while maintenance and testing costs increase. In addition, it is difficult to find the substitutable analog equipment s due to obsolescence. Therefore, the instrumentation and control (I and C) systems have changed from analog system to digital system due to these facts. With the introduction of digital systems, research reactors are forced to care for the problem of cyber attacks because I and C systems have been digitalized using networks or communication systems. Especially, it is more issued at research reactors due to the accessibility of human resources. In the real world, an IBM researcher has been successful in controlling the software by penetrating a NPPs network in U.S. on July 2008 and acquiring the control right of nuclear facilities after one week. Moreover, the malignant code called 'stuxnet' impaired the nearly 1,000 centrifugal separators in Iran according to an IAEA report. The problem of cyber attacks highlights the important of cyber security, which should be emphasized. Defense.in.depth (DID) is a significant concept for the cyber security to work properly. DID institutes and maintains a hardy program for critical digital asset (CDA) by implementing multiple security boundaries. In this work, we assign cyber security levels to a typical digital I and C system using DID concept. This work is very useful in applying the concept of DID to nuclear industry with respect to cyber security

  5. Defining Requirements for Improved Photovoltaic System Reliability

    Energy Technology Data Exchange (ETDEWEB)

    Maish, A.B.

    1998-12-21

    Reliable systems are an essential ingredient of any technology progressing toward commercial maturity and large-scale deployment. This paper defines reliability as meeting system fictional requirements, and then develops a framework to understand and quantify photovoltaic system reliability based on initial and ongoing costs and system value. The core elements necessary to achieve reliable PV systems are reviewed. These include appropriate system design, satisfactory component reliability, and proper installation and servicing. Reliability status, key issues, and present needs in system reliability are summarized for four application sectors.

  6. Requirements for CEC POP machine protection system

    International Nuclear Information System (INIS)

    The requirements of CEC POP machine protection system are meant to prevent damage to a vacuum chamber by a missteered electron beam. In this example, beam energy = 22 MeV, Maximal bunch charge = 5 nC, Maximal repetition rate = 78 kHz, Normalized emittance = 5 mm mrad, Minimal β-function = 1 m. From this information the requirements of the protection system can be calculated by factoring the information into equations to find beam densities and temperature excursions.

  7. Deficiency tracking system, conceptual business process requirements

    International Nuclear Information System (INIS)

    The purpose of this document is to describe the conceptual business process requirements of a single, site-wide, consolidated, automated, deficiency management tracking, trending, and reporting system. This description will be used as the basis for the determination of the automated system acquisition strategy including the further definition of specific requirements, a ''make or buy'' determination and the development of specific software design details

  8. Using Computer-Assisted Personalized Assignment System in a Large-Enrollment General Physics

    Science.gov (United States)

    Gok, Tolga

    2010-01-01

    The on-line tutoring system, LON-CAPA, was implemented in Introductory Calculus-Based Physics-II course at Colorado School of Mines in fall 2008 and spring 2009. In this paper, the features and the case study of the LON-CAPA implementation were described. The performance data obtained from the scores of students enrolled in the course represented…

  9. Implementing a Computer Program that Captures Students' Work on Customizable, Periodic-System Data Assignments

    Science.gov (United States)

    Wiediger, Susan D.

    2009-01-01

    The periodic table and the periodic system are central to chemistry and thus to many introductory chemistry courses. A number of existing activities use various data sets to model the development process for the periodic table. This paper describes an image arrangement computer program developed to mimic a paper-based card sorting periodic table…

  10. Integrating a Learning Management System with a Student Assignments Digital Repository. A Case Study

    Science.gov (United States)

    Díaz, Javier; Schiavoni, Alejandra; Osorio, María Alejandra; Amadeo, Ana Paola; Charnelli, María Emilia

    2013-01-01

    The integration of different platforms and information Systems in the academic environment is highly important and quite a challenge within the field of Information Technology. This integration allows for higher resource availability and improved interaction among intervening actors. In the field of e-Learning, where Learning Management Systems…

  11. DS-CDMA Cellular Systems Performance with Base Station Assignment, Power Control Error and Beamforming over Multipath Fading

    Directory of Open Access Journals (Sweden)

    Mohamad Dosaranian Moghadam

    2011-01-01

    Full Text Available The interference reduction capability of antenna arrays, base station assignment and the power controlalgorithms have been considered separately as means to increase the capacity in wireless communicationnetworks. In this paper, we propose base station assignment method based on minimizing the transmitterpower (BSA-MTP technique in a direct sequence-code division multiple access (DS-CDMA receiver inthe presence of frequency-selective Rayleigh fading and power control error (PCE. This receiverconsists of constrained least mean squared (CLMS algorithm, matched filter (MF, and maximal ratiocombining (MRC in three stages. Also, we present switched-beam (SB technique in the first stage of theRAKE receiver for enhancing signal to interference plus noise ratio (SINR in DS-CDMA cellularsystems. The simulation results indicate that BSA-MTP technique can significantly improve the networkbit error rate (BER in comparison with the conventional case. Finally, we discuss on three parameters ofthe PCE, number of resolvable paths, and channel propagation conditions (path-loss exponent andshadowing and their effects on capacity of the system via some computer simulations.

  12. A New Approach for Sub-Channels Assignment in Downlink Fourth Generation Mobile Systems

    Directory of Open Access Journals (Sweden)

    Fakhreddine Khelifa

    2011-01-01

    Full Text Available Problem statement: We proposed a new heuristic method for subchannels allocation problem in the context. Approach: In this system, OFDM transmission method has been used, in order to reduce the effect of multipath fading, OFDMA to achieve multiple access schemes and flexibility in resource allocation. Results: An adaptive method for subchannels allocation is necessary in order to exploit the multiuser diversity, to respect real time constraints and to maximize the capacity system. The proposed algorithm is based in the Channel State Information (CSI of total mobiles stations present in the cell. The idea of this method is based in the statistic parameters of the gain of frequency response channel for every mobile station. These parameters are the key to organize the different MS’s and subchannels priority. Conclusion/Recommendations: Numerical results showed that the proposed algorithm outperforms an allocation scheme in terms of Bloc Error Rate, Higher system capacity and Fairness among active users, compared to others previous methods.

  13. Monitored Retrievable Storage System Requirements Document

    International Nuclear Information System (INIS)

    This Monitored Retrievable Storage System Requirements Document (MRS-SRD) describes the functions to be performed and technical requirements for a Monitored Retrievable Storage (MRS) facility subelement and the On-Site Transfer and Storage (OSTS) subelement. The MRS facility subelement provides for temporary storage, at a Civilian Radioactive Waste Management System (CRWMS) operated site, of spent nuclear fuel (SNF) contained in an NRC-approved Multi-Purpose Canister (MPC) storage mode, or other NRC-approved storage modes. The OSTS subelement provides for transfer and storage, at Purchaser sites, of spent nuclear fuel (SNF) contained in MPCs. Both the MRS facility subelement and the OSTS subelement are in support of the CRWMS. The purpose of the MRS-SRD is to define the top-level requirements for the development of the MRS facility and the OSTS. These requirements include design, operation, and decommissioning requirements to the extent they impact on the physical development of the MRS facility and the OSTS. The document also presents an overall description of the MRS facility and the OSTS, their functions (derived by extending the functional analysis documented by the Physical System Requirements (PSR) Store Waste Document), their segments, and the requirements allocated to the segments. In addition, the top-level interface requirements of the MRS facility and the OSTS are included. As such, the MRS-SRD provides the technical baseline for the MRS Safety Analysis Report (SAR) design and the OSTS Safety Analysis Report design

  14. Mined Geologic Disposal System Requirements Document

    International Nuclear Information System (INIS)

    This Mined Geologic Disposal System Requirements Document (MGDS-RD) describes the functions to be performed by, and the requirements for, a Mined Geologic Disposal System (MGDS) for the permanent disposal of spent nuclear fuel (SNF) (including SNF loaded in multi-purpose canisters (MPCs)) and commercial and defense high-level radioactive waste (HLW) in support of the Civilian Radioactive Waste Management System (CRWMS). The purpose of the MGDS-RD is to define the program-level requirements for the design of the Repository, the Exploratory Studies Facility (ESF), and Surface Based Testing Facilities (SBTF). These requirements include design, operation, and decommissioning requirements to the extent they impact on the physical development of the MGDS. The document also presents an overall description of the MGDS, its functions (derived using the functional analysis documented by the Physical System Requirements (PSR) documents as a starting point), its segments as described in Section 3.1.3, and the requirements allocated to the segments. In addition, the program-level interfaces of the MGDS are identified. As such, the MGDS-RD provides the technical baseline for the design of the MGDS

  15. The Potential of Flexible UL/DL Slot Assignment in 5G Systems

    DEFF Research Database (Denmark)

    Catania, Davide; Gatnau, Marta; Cattoni, Andrea Fabio;

    2014-01-01

    5th Generation (5G) small cells are expected to satisfy the increasing demand for wireless data traffic. In the presence of large scale dense and randomly deployed cells, autonomous and distributed configuration mechanisms are highly desirable. However, small cells typically serve a small number of...... users, such that sudden traffic imbalances between downlink (DL) and uplink (UL) are expected in the new 5G system. We exploit the flexibility of time-division duplex (TDD) to deal with such imbalances by adapting swiftly to instantaneously varying traffic needs. In this paper we propose a distributed...

  16. Energy requirements in pressure irrigation systems

    OpenAIRE

    Sánchez Calvo, Raúl; Rodríguez Sinobas, Leonor; Juana Sirgado, Luis; Laguna Peñuelas, Francisco; Castañon Lion, Guillermo; Gil Rodríguez, María; Benitez Buelga, Javier

    2012-01-01

    Modernization of irrigation schemes, generally understood as transformation of surface irrigation systems into pressure –sprinkler and trickle- irrigation systems, aims at, among others, improving irrigation efficiency and reduction of operation and maintenance efforts made by the irrigators. However, pressure irrigation systems, in contrast, carry a serious energy cost. Energy requirements depend on decisions taken on management strategies during the operation phase, which are co...

  17. Macroprudential regulation and systemic capital requirements

    OpenAIRE

    Gauthier, Céline; Lehar, Alfred; Souissi, Moez

    2010-01-01

    In the aftermath of the financial crisis, there is interest in reforming bank regulation such that capital requirements are more closely linked to a bank's contribution to the overall risk of the financial system. In our paper we compare alternative mechanisms for allocating the overall risk of a banking system to its member banks. Overall risk is estimated using a model that explicitly incorporates contagion externalities present in the financial system. We have access to a unique data set o...

  18. Requirements Engineering for General Recommender Systems

    OpenAIRE

    Portugal, Ivens; Alencar, Paulo; Cowan, Donald

    2015-01-01

    In requirements engineering for recommender systems, software engineers must identify the data that drives the recommendations. This is a labor-intensive task, which is error-prone and expensive. One possible solution to this problem is the adoption of automatic recommender system development approach based on a general recommender framework. One step towards the creation of such a framework is to determine the type of data used in recommender systems. In this paper, a systematic review has b...

  19. Matching technology developments to system requirements

    OpenAIRE

    Smith, D.; Byzery, B.; Delhaye, E.; Buck, C.

    1998-01-01

    In the field of telecommunications, the applications for GaAs MMIC's beyond 2000 will include today's drivers such as Cellular and Portable Telephones, Direct Broadcast Systems and CATV distribution, but also the emerging markets of multimedia satellite communications, broadband Wireless Services, and high bit rate optical fibre systems. These latter systems use millimetre wave carrier frequencies, typically ranging from 10 GHz to 80 GHz. The full paper will look at the requirements which hav...

  20. Requirements development for a patient computing system.

    Science.gov (United States)

    Wald, J S; Pedraza, L A; Reilly, C A; Murphy, M E; Kuperman, G J

    2001-01-01

    Critical parts of the software development life cycle are concerned with eliciting, understanding, and managing requirements. Though the literature on this subject dates back for several decades, practicing effective requirements development remains a current and challenging area. Some projects flourish with a requirements development process (RDP) that is implicit and informal, but this approach may be overly risky, particularly for large projects that involve multiple individuals, groups, and systems over time. At Partners HealthCare System in Boston, Massachusetts, we have applied a more formal approach for requirements development to the Patient Computing Project. The goal of the project is to create web-based software that connects patients electronically with their physician's offices and has the potential to improve care efficiency and quality. It is a large project, with over 500 function points. Like most technological innovation, the successful introduction of this system requires as much attention to understanding the business needs and workflow details as it does to technical design and implementation. This paper describes our RDP approach, and key business requirements discovered through this process. We believe that a formal RDP is essential, and that informatics as a field must include proficiencies in this area. PMID:11825282

  1. Thermionic reactor electric propulsion system requirements.

    Science.gov (United States)

    Mondt, J. F.; Sawyer, C. D.; Schaupp, R. W.

    1972-01-01

    Results of mission analysis, system analysis and mission engineering studies to find a single nuclear electric propulsion (NEP) system which would be applicable for a broad range of unmanned outer planet missions. The NEP system studied uses an in-core nuclear thermionic reactor as the electric power source and mercury bombardment ion engines for propulsion. Many requirements, which are imposed on the NEP system by the mission, were determined from the studies in the process of trying to find a single NEP system for many missions. It is concluded that a single thermionic reactor NEP system could be useful for a broad range of unmanned outer planet missions. The thermionic reactor NEP system should have a power level in the range from 70 to 120 kWe, a system specific weight of approximately 30 kg/kWe, and a full power output capability of 20,000 hr.

  2. Balanced input-output assignment

    Science.gov (United States)

    Gawronski, W.; Hadaegh, F. Y.

    1989-01-01

    Actuator/sensor locations and balanced representations of linear systems are considered for a given set of controllability and observability grammians. The case of equally controlled and observed states is given special attention. The assignability of grammians is examined, and the conditions for their existence are presented, along with several algorithms for their determination. Although an arbitrary positive semidefinite matrix is not always assignable, the identity grammian is shown to be always assignable. The results are extended to the case of flexible structures.

  3. Requirements engineering for software and systems

    CERN Document Server

    Laplante, Phillip A

    2014-01-01

    Solid requirements engineering has increasingly been recognized as the key to improved, on-time and on-budget delivery of software and systems projects. This book provides practical teaching for graduate and professional systems and software engineers. It uses extensive case studies and exercises to help students grasp concepts and techniques. With a focus on software-intensive systems, this text provides a probing and comprehensive review of recent developments in intelligent systems, soft computing techniques, and their diverse applications in manufacturing. The second edition contains 100% revised content and approximately 30% new material

  4. Un Enfoque Multiobjetivo para la Asignación de Canales en Sistemas Celulares A Multiobjective Approach for Cellular Systems Channel Assignment

    Directory of Open Access Journals (Sweden)

    Héctor E Carranza

    2008-01-01

    Full Text Available En este trabajo se propone un algoritmo de asignación de canales para reducir la probabilidad de bloqueo de sistemas celulares y ampliar la capacidad del sistema para absorber nuevas llamadas. El algoritmo debe proveer un conjunto de soluciones de compromiso entre dos objetivos contrapuestos; por un lado minimizar la cantidad de reasignaciones y por el otro minimizar el nivel de interferencia debido a la flexibilización de las restricciones de compatibilidad electromagnética. Se propone un enfoque heurístico basado en un paradigma evolutivo para resolver el problema de optimización multiobjetivo. Para que la evolución sea eficiente, se incorpora en el proceso evolutivo conocimiento específico del problema. Dos algoritmos evolutivos multiobjetivo (SPEAII y NSGA II son comparados usando dos diferentes métricas. Los resultados muestran que la metodología propuesta puede ser aplicada a las diferentes generaciones de sistemas de comunicaciones móviles.To improve the quality of service in cell systems, techniques of Dynamic Assignment Channels are used to reduce the probability of blocking calls. In this paper an algorithm of assignment channels is required to reduce the probability of blocking, extending the system capacity to add new calls. This is obtained by using an interchange of channels of current calls and reducing the restrictions of electromagnetic compatibility. According to this, the algorithm has to provide solutions of commitments between two different objectives; on the one hand reduce the amount of assignments, and on the other to do the same with the level of interference due to the flexible restrictions of electromagnetic compatibility. A heuristic focus based on the evolution paradigm is presented to solve the multi-objective optimization problem. Two evolutionary multi-objective algorithms (SPEAII y NSGA II are compared by the use of two different metrics. The results show that the proposed methodology can be applied to

  5. Exploring requirements for indoor navigation systems

    OpenAIRE

    Ni, Chunxiao

    2013-01-01

    Indoor navigation has been a subject in ubiquitous computing domain in the past decade. Recently many studies focus on exploring user requirements for indoor navigation systems and make effort in developing effective interactive systems to support indoor navigation. This study aims to find which kind of spatial representation and what orientation cues common users prefer to use for indoor navigation. An experiment was performed to examine the navigation effectiveness and user satisfaction wit...

  6. Human Systems Integration: Requirements and Functional Decomposition

    Science.gov (United States)

    Berson, Barry; Gershzohn, Gary; Boltz, Laura; Wolf, Russ; Schultz, Mike

    2005-01-01

    This deliverable was intended as an input to the Access 5 Policy and Simulation Integrated Product Teams. This document contains high-level pilot functionality for operations in the National Airspace System above FL430. Based on the derived pilot functions the associated pilot information and control requirements are given.

  7. Refining System Requirements to Program Specifications

    DEFF Research Database (Denmark)

    Olderog, Ernst-Ruediger; Ravn, Anders P.; Skakkebæk, Jens Ulrik

    1996-01-01

    A coherent and mathematically well-founded approach to the design ofreal-time and hybrid systems is presented.It covers requirementsanalysis and specification, design of controlling automatasatisfying the requirements, and derivation ofoccam-like communicating programs from these automata.The gen...

  8. National Ignition Facility system design requirements Laser System SDR002

    International Nuclear Information System (INIS)

    This System Design Requirement document establishes the performance, design, development, and test requirements for the NIP Laser System. The Laser System generates and delivers high-power optical pulses to the target chamber, and is composed of all optical puke creating and transport elements from Puke Generation through Final Optics as well as the special equipment that supports, energizes and controls them. The Laser System consists of the following WBS elements: 1.3 Laser System 1.4 Beam Transport System 1.6 Optical Components 1.7 Laser Control 1.8.7 Final Optics

  9. Materiel requirements for airborne minefield detection system

    Science.gov (United States)

    Bertsche, Karl A.; Huegle, Helmut

    1997-07-01

    Within the concept study, Material Requirements for an airborne minefield detection systems (AMiDS) the following topics were investigated: (i) concept concerning airborne minefield detection technique sand equipment, (ii) verification analysis of the AMiDS requirements using simulation models and (iii) application concept of AMiDS with regard o tactics and military operations. In a first approach the problems concerning unmanned airborne minefield detection techniques within a well-defined area were considered. The complexity of unmanned airborne minefield detection is a result of the following parameters: mine types, mine deployment methods, tactical requirements, topography, weather conditions, and the size of the area to be searched. In order to perform the analysis, a simulation model was developed to analyze the usability of the proposed remote controlled air carriers. The basic flight patterns for the proposed air carriers, as well as the preparation efforts of military operations and benefits of such a system during combat support missions were investigated. The results of the conceptual study showed that a proposed remote controlled helicopter drone could meet the stated German MOD scanning requirements of mine barriers. Fixed wing air carriers were at a definite disadvantage because of their inherently large turning loops. By implementing a mine detection system like AMiDS minefields can be reconnoitered before an attack. It is therefore possible either to plan, how the minefields can be circumvented or where precisely breaching lanes through the mine barriers are to be cleared for the advancing force.

  10. Required buffer capacities in assembly systems

    Directory of Open Access Journals (Sweden)

    D. Krenczyk

    2007-07-01

    Full Text Available Purpose: The aim of the realised analysis is the determination of the set of conditions. The fulfilment of those conditions enables the synchronisation of the assembly system work into the steady state. It is necessary to specify the rules controlling the assembly system work. Rhythmic concurrent production with wide assortment in the considered assembly system is realised.Design/methodology/approach: The theoretical roots of the considerations presented in that paper include theory of constraints. The presented approach is consistent with the authority method called Requirements and Possibilities Balance Method (RPBMFindings: Two kinds of system buffers: the entrance buffers and the inter-resources buffers are considered in that paper. The number of buffers elements needed for production during first steady state of the given system has been determined. Mathematical formulas specifying the minimal capacity of the buffers allocated in the assembly system have been outworked.Research limitations/implications: The formulas specifying the minimal buffer capacity constitute the first step towards formulation of the automatic method. That method is designed for the automatic construction of rules controlling the system work during transient phases between two different steady states. The process enables automation of the introduction filling of the system buffers.Practical implications: The presented formulas can become an integrated part of existing authority software. The developed computer system aids the decision-making process connected with production planning and ensures effective utilisation of production resources. Moreover, the formulas correctness during computer simulations has been verified.Originality/value: To develop the formulas specifying the minimal capacity of the system buffers is the main achievement of the given paper. The presented approach permits to solve the problem concerning the synchronisation of the assembly system work

  11. Job Assignment with Multivariate Skills

    OpenAIRE

    Brilon, Stefanie

    2010-01-01

    This paper analyzes the job assignment problem faced by a firm when workers' skills are distributed along several dimensions and jobs require different skills to varying extent. I derive optimal assignment rules with and without slot constraints, and show that under certain circumstances workers may get promoted although in their new job they are expected to be less productive than in their old job. This can be interpreted as a version of the Peter Principle which states that workers get prom...

  12. Dynamic Object Oriented Requirements System (DOORS) System Test Plan

    International Nuclear Information System (INIS)

    The U. S. Department of Energy, Office of River Protection (ORP) will use the Dynamic Object Oriented Requirements System (DOORS) as a tool to assist in identifying, capturing, and maintaining the necessary and sufficient set of requirements for accomplishing the ORP mission. By managing requirements as one integrated set, the ORP will be able to carry out its mission more efficiently and effectively. DOORS is a Commercial-Off-The-Shelf (COTS) requirements management tool. The tool has not been customized for the use of the PIO, at this time

  13. Developing IVHM Requirements for Aerospace Systems

    Science.gov (United States)

    Rajamani, Ravi; Saxena, Abhinav; Kramer, Frank; Augustin, Mike; Schroeder, John B.; Goebel, Kai; Shao, Ginger; Roychoudhury, Indranil; Lin, Wei

    2013-01-01

    The term Integrated Vehicle Health Management (IVHM) describes a set of capabilities that enable sustainable and safe operation of components and subsystems within aerospace platforms. However, very little guidance exists for the systems engineering aspects of design with IVHM in mind. It is probably because of this that designers have to use knowledge picked up exclusively by experience rather than by established process. This motivated a group of leading IVHM practitioners within the aerospace industry under the aegis of SAE's HM-1 technical committee to author a document that hopes to give working engineers and program managers clear guidance on all the elements of IVHM that they need to consider before designing a system. This proposed recommended practice (ARP6883 [1]) will describe all the steps of requirements generation and management as it applies to IVHM systems, and demonstrate these with a "real-world" example related to designing a landing gear system. The team hopes that this paper and presentation will help start a dialog with the larger aerospace community and that the feedback can be used to improve the ARP and subsequently the practice of IVHM from a systems engineering point-of-view.

  14. Empirical evaluation of DArT, SNP, and SSR marker-systems for genotyping, clustering, and assigning sugar beet hybrid varieties into populations

    NARCIS (Netherlands)

    Simko, I.; Eujayl, I.; Hintum, van T.J.L.

    2012-01-01

    Dominant and co-dominant molecular markers are routinely used in plant genetic research. In the present study we assessed the success-rate of three marker-systems for estimating genotypic diversity, clustering varieties into populations, and assigning a single variety into the expected population. A

  15. Empirical evaluation of DArT, SNP, and SSR marker-systems for genotyping, clustering, and assigning sugar beet hybrid varieties into populations

    Science.gov (United States)

    Dominant and co-dominant molecular markers are routinely used in plant genetic diversity research. In the present study we assessed the success-rate of three marker-systems for estimating genotypic diversity, clustering varieties into populations, and assigning a single variety into the expected pop...

  16. Evaluation of a UMLS Auditing Process of Semantic Type Assignments

    Science.gov (United States)

    Gu, Huanying; Hripcsak, George; Chen, Yan; Morrey, C. Paul; Elhanan, Gai; Cimino, James J.; Geller, James; Perl, Yehoshua

    2007-01-01

    The UMLS is a terminological system that integrates many source terminologies. Each concept in the UMLS is assigned one or more semantic types from the Semantic Network, an upper level ontology for biomedicine. Due to the complexity of the UMLS, errors exist in the semantic type assignments. Finding assignment errors may unearth modeling errors. Even with sophisticated tools, discovering assignment errors requires manual review. In this paper we describe the evaluation of an auditing project of UMLS semantic type assignments. We studied the performance of the auditors who reviewed potential errors. We found that four auditors, interacting according to a multi-step protocol, identified a high rate of errors (one or more errors in 81% of concepts studied) and that results were sufficiently reliable (0.67 to 0.70) for the two most common types of errors. However, reliability was low for each individual auditor, suggesting that review of potential errors is resource-intensive. PMID:18693845

  17. Evaluation of a UMLS Auditing Process of Semantic Type Assignments.

    Science.gov (United States)

    Gu, Huanying Helen; Hripcsak, George; Chen, Yan; Morrey, C Paul; Elhanan, Gai; Cimino, James; Geller, James; Perl, Yehoshua

    2007-01-01

    The UMLS is a terminological system that integrates many source terminologies. Each concept in the UMLS is assigned one or more semantic types from the Semantic Network, an upper level ontology for biomedicine. Due to the complexity of the UMLS, errors exist in the semantic type assignments. Finding assignment errors may unearth modeling errors. Even with sophisticated tools, discovering assignment errors requires manual review. In this paper we describe the evaluation of an auditing project of UMLS semantic type assignments. We studied the performance of the auditors who reviewed potential errors. We found that four auditors, interacting according to a multi-step protocol, identified a high rate of errors (one or more errors in 81% of concepts studied) and that results were sufficiently reliable (0.67 to 0.70) for the two most common types of errors. However, reliability was low for each individual auditor, suggesting that review of potential errors is resource-intensive. PMID:18693845

  18. Requirements of CLIC Beam Loss Monitoring System

    CERN Document Server

    Sapinski, M; Holzer, EB; Jonker, M; Mallows, S; Otto, T; Welsch, C

    2010-01-01

    The Compact Linear Collider (CLIC) [1] is a proposed multi-TeV linear electron-positron collider being designed by a world-wide collaboration. It is based on a novel twobeam acceleration scheme in which two beams (drive and main beam) are placed in parallel to each other and energy is transferred from the drive beam to the main one. Beam losses on either of them can have catastrophic consequences for the machine, because of high intensity (drive beam) or high energy and small emittance (main beam). In the framework of machine protection, a Beam Loss Monitoring (BLM) system has to be put in place. This paper discusses the requirements for the beam loss system in terms of detector sensitivity, resolution, dynamic range and ability to distinguish losses originating from various sources. The two-beam module where the protection from beam losses is particularly challenging and important, is studied.

  19. Surviving mousepox infection requires the complement system.

    Directory of Open Access Journals (Sweden)

    Elizabeth A Moulton

    2008-12-01

    Full Text Available Poxviruses subvert the host immune response by producing immunomodulatory proteins, including a complement regulatory protein. Ectromelia virus provides a mouse model for smallpox where the virus and the host's immune response have co-evolved. Using this model, our study investigated the role of the complement system during a poxvirus infection. By multiple inoculation routes, ectromelia virus caused increased mortality by 7 to 10 days post-infection in C57BL/6 mice that lack C3, the central component of the complement cascade. In C3(-/- mice, ectromelia virus disseminated earlier to target organs and generated higher peak titers compared to the congenic controls. Also, increased hepatic inflammation and necrosis correlated with these higher tissue titers and likely contributed to the morbidity in the C3(-/- mice. In vitro, the complement system in naïve C57BL/6 mouse sera neutralized ectromelia virus, primarily through the recognition of the virion by natural antibody and activation of the classical and alternative pathways. Sera deficient in classical or alternative pathway components or antibody had reduced ability to neutralize viral particles, which likely contributed to increased viral dissemination and disease severity in vivo. The increased mortality of C4(-/- or Factor B(-/- mice also indicates that these two pathways of complement activation are required for survival. In summary, the complement system acts in the first few minutes, hours, and days to control this poxviral infection until the adaptive immune response can react, and loss of this system results in lethal infection.

  20. Wavelength and fiber assignment problems on avionic networks

    DEFF Research Database (Denmark)

    Zhang, Jiang; An, Yi; Berger, Michael Stübert; Clausen, Anders

    This paper solves the wavelength and fiber assignment problems with systems' isolation requirements on the avionic ring networks. The experiment results give a general glace of the numbers of the wavelengths and fibers are required under certain scale of networks. At the beginning of increasing...

  1. Design and Validation of a Web-Based System for Assigning Members to Teams Using Instructor-Specified Criteria

    Science.gov (United States)

    Layton, Richard A.; Loughry, Misty L.; Ohland, Matthew W.; Ricco, George D.

    2010-01-01

    A significant body of research identifies a large number of team composition characteristics that affect the success of individuals and teams in cooperative learning and project-based team environments. Controlling these factors when assigning students to teams should result in improved learning experiences. However, it is very difficult for…

  2. Requirements for and limitations on designing decision support systems

    International Nuclear Information System (INIS)

    Decision Support Systems (DSS), which combine the capabilities of modern computers and human skills in solving complex ill-structured problems of organizational management, has been created as an evolution and development of Decision Theory, Management Information Systems and Data Base Management Systems. The DSS help users to formulate and analyze decision alternatives in a number of ways by making use of objective and subjective data, models, knowledge. The main components of a conceptual DSS model are 'user-system' interface, block of problem analysis and structuring, decision-making block, data base, model base, and knowledge base. The 'user-system' interface contains facilities for generating and controlling the dialogue. The blocks of problem analysis and decision-making incorporate procedures and methods which help formulate the problem, analyze approaches to its solution, and generate the result by making use of the data, model and knowledge bases. The preliminary analysis and structuring of the problem are carried out either by the decision maker alone or jointly with a skilled consultant-analyst. The ability to conceive the structure of a problem correctly is an art reinforced by experience and intuition. The complexity of even a preliminary analysis, and the presence of numerous ill-defined factors, set a number of requirements to DSS. An effective decision-making depends on both the harmony of decision-maker and consultant efforts and the DSS capacities. Problems arising in designing each of DSS blocks and examples of its successful implementation are considered in paper. At the early stages of its development DSS was treated as a computer-based facility for assisting in processing huge amounts of data with rigidly assigned models and in presenting decision results. It was explicitly assumed that the problem solved was sufficiently clear and understandable. We believe, the major purpose of the next generation of DSS must be: assistance in providing for

  3. Requirements for Interoperability in Healthcare Information Systems

    Directory of Open Access Journals (Sweden)

    Rita Noumeir

    2012-01-01

    Full Text Available Interoperability is a requirement for the successful deployment of Electronic Health Records (EHR. EHR improves the quality of healthcare by enabling access to all relevant information at the diagnostic decision moment, regardless of location. It is a system that results from the cooperation of several heterogeneous distributed subsystems that need to successfully exchange information relative to a specific healthcare process. This paper analyzes interoperability impediments in healthcare by first defining them and providing concrete healthcare examples, followed by discussion of how specifications can be defined and how verification can be conducted to eliminate those impediments and ensure interoperability in healthcare. This paper also analyzes how Integrating the Healthcare Enterprise (IHE has been successful in enabling interoperability, and identifies some neglected aspects that need attention.

  4. BTEC Integrative Assignments.

    Science.gov (United States)

    Foot, G. E.

    1992-01-01

    To equip electrical engineering students with common and transferable work skills, a program of integrative assignments was created to develop communication and teamwork skills. Discusses assignment components; the log book, a personal account of each assignment; assessment; conversion of "common skills" to competence statements, and performance…

  5. Engineered Barrier System performance requirements systems study report. Revision 02

    International Nuclear Information System (INIS)

    This study evaluates the current design concept for the Engineered Barrier System (EBS), in concert with the current understanding of the geologic setting to assess whether enhancements to the required performance of the EBS are necessary. The performance assessment calculations are performed by coupling the EBS with the geologic setting based on the models (some of which were updated for this study) and assumptions used for the 1995 Total System Performance Assessment (TSPA). The need for enhancements is determined by comparing the performance assessment results against the EBS related performance requirements. Subsystem quantitative performance requirements related to the EBS include the requirement to allow no more than 1% of the waste packages (WPs) to fail before 1,000 years after permanent closure of the repository, as well as a requirement to control the release rate of radionuclides from the EBS. The EBS performance enhancements considered included additional engineered components as well as evaluating additional performance available from existing design features but for which no performance credit is currently being taken

  6. Engineered Barrier System performance requirements systems study report. Revision 02

    Energy Technology Data Exchange (ETDEWEB)

    Balady, M.A.

    1997-01-14

    This study evaluates the current design concept for the Engineered Barrier System (EBS), in concert with the current understanding of the geologic setting to assess whether enhancements to the required performance of the EBS are necessary. The performance assessment calculations are performed by coupling the EBS with the geologic setting based on the models (some of which were updated for this study) and assumptions used for the 1995 Total System Performance Assessment (TSPA). The need for enhancements is determined by comparing the performance assessment results against the EBS related performance requirements. Subsystem quantitative performance requirements related to the EBS include the requirement to allow no more than 1% of the waste packages (WPs) to fail before 1,000 years after permanent closure of the repository, as well as a requirement to control the release rate of radionuclides from the EBS. The EBS performance enhancements considered included additional engineered components as well as evaluating additional performance available from existing design features but for which no performance credit is currently being taken.

  7. Capturing security requirements for software systems

    OpenAIRE

    Hassan El-Hadary; Sherif El-Kassas

    2014-01-01

    Security is often an afterthought during software development. Realizing security early, especially in the requirement phase, is important so that security problems can be tackled early enough before going further in the process and avoid rework. A more effective approach for security requirement engineering is needed to provide a more systematic way for eliciting adequate security requirements. This paper proposes a methodology for security requirement elicitation based on problem frames. Th...

  8. Assigning Boundary Conditions to the Southern Inland and Coastal Systems (SICS) Model Using Results from the South Florida Water Management Model (SFWMM)

    Science.gov (United States)

    Wolfert, Melinda A.; Langevin, Christian D.; Swain, Eric D.

    2004-01-01

    The Comprehensive Everglades Restoration Plan (CERP) requires the testing and evaluation of different water-management scenarios for southern Florida. As part of CERP, the South Florida Water Management District is using its regional hydrologic model, the South Florida Water Management Model (SFWMM), to evaluate different hydrologic scenarios. The SFWMM was designed specifically for the inland freshwater areas in southern Florida, and extends only slightly into Florida Bay. Thus, the U.S. Geological Survey developed the Southern Inland and Coastal Systems (SICS) model, which is an integrated surface-water and ground-water model designed to simulate flows, stages, and salinities in the southern Everglades and Florida Bay. Modifications to the SICS boundary conditions allow the local-scale SICS model to be linked to the regional-scale SFWMM. The linked model will be used to quantify the effects of restoration alternatives on flows, stages, and salinities in the SICS area. This report describes the procedure for linking the SICS model with the SFWMM. The linkage is shown to work by comparing the results of a linked 5-year simulation with the results from a simulation in which the model boundaries are assigned using field data. The surface-water module of the SICS model is driven by areal influences and lateral boundaries. The areal influences (wind, rainfall, and evapotranspiration) remain the same when the SICS model is modified to link to the SFWMM. Four types of lateral boundaries (discharge, water level, no flow, and salinity) are used in the SICS model. Two of three discharge boundaries (at Taylor Slough Bridge and C-111 Canal) in the current SICS model domain are converted to water-level boundaries to increase accuracy. The only change to the third discharge boundary (at Levee 31W) is that the flow data are derived from SFWMM model output instead of using measured field data flows. Three water-level boundaries are modified only by receiving their data from SFWMM

  9. Assigning signs to the electronic nonadiabatic coupling terms: The {H2,O} system as a case study

    Science.gov (United States)

    Vibók, Ágnes; Halász, Gábor J.; Suhai, Sándor; Baer, Michael

    2005-04-01

    This paper is devoted to a specific difficulty related to the electronic nonadiabatic coupling terms (NACT), namely, how to determine correctly their signs. It is well known that correct NACTs, including their signs, are crucial for any numerical treatment of the nuclear Schrödinger equation [see, i.e., A. Kuppermaan and R. Abrol, Adv. Chem. Phys. 124, 283 (2003)]. In most cases the derivation of the correct sign of the nonadiabatic coupling matrix (NACM) is done employing various continuity procedures. However, there are cases where these procedures do not suffice and for these cases we suggest to apply an additional procedure based on a mathematical lemma which asserts that the exponentiated line integral which yields the D matrix is invariant with respect to the initial point of the integration [M. Baer, J. Phys. Chem. A 104, 3181 (2000)]. In the numerical study we apply this lemma to determine the signs of the 3×3 NACM elements for the three excited states of the {H2,O} system (some of these NACTs are presented here for the first time). It turns out that the ab initio treatment yields results from which one can form eight different 3×3 NACMs. However the application of this lemma (which does not require any significant additional numerical effort) reduces this number to two. The final selection is done by an enhanced numerical study which requires more accurate calculations.

  10. Nuclear Systems Materials Handbook. [Materials requirements for nuclear energy systems

    Energy Technology Data Exchange (ETDEWEB)

    Marchbanks, M.F; Moen, R.A.; Irvin, J.E.

    1976-01-01

    The NSM Handbook is a multi-volume document being compiled on a continuing basis to meet the broad materials data requirements of those involved in the development of advanced nuclear energy systems. The present focus of the Handbook is upon nuclear systems that have not yet achieved commercial status, with near-term emphasis on the nation's Liquid Metal Fast Breeder Reactor Program. Actual use of the Handbook extends to other advanced nuclear concepts sharing the same needs, and to many nonnuclear engineering activities as well.

  11. Requirements development for a patient computing system.

    OpenAIRE

    Wald, J. S.; Pedraza, L. A.; Reilly, C. A.; Murphy, M. E.; Kuperman, G. J.

    2001-01-01

    Critical parts of the software development life cycle are concerned with eliciting, understanding, and managing requirements. Though the literature on this subject dates back for several decades, practicing effective requirements development remains a current and challenging area. Some projects flourish with a requirements development process (RDP) that is implicit and informal, but this approach may be overly risky, particularly for large projects that involve multiple individuals, groups, a...

  12. Safety requirements for wiring systems and connectors for photovoltaic systems

    Science.gov (United States)

    Lundtveit, T.

    1984-09-01

    Safety requirements for roof-mounted photovoltaic (PV) arrays were established by considering the environmental use-conditions applicable to PV arrays and the differences between integral-, direct-, standoff- and rack-mounted modules. Those articles in the National Electrical Code (NEC) covering wiring systems are discussed to: (1) define the wiring systems; (2) identify the permitted uses and use-restrictions; (3) outline the advantages and disadvantages; and (4) address the concerns regarding support, protection against mechanical damage, and wet versus dry locations. The advantages and disadvantages of each wiring system are assessed to arrive at candidate wiring systems that are best suited for use in PV arrays. For candidate wiring systems having prohibitive use-restrictions issues are considered that need to be addressed by any proposed revision to the National Electrical Code to permit acceptance by the inspection authorities. Various wiring termination methods permitted by the NEC are discussed and those which have features that are desirable for PV applications are identified. Performance and construction requirements for PV cable and for PV connectors are presented in separate outlines of proposed investigations of these products.

  13. Analyzing Tenant Assignment Policies

    OpenAIRE

    Kaplan, Edward H.

    1987-01-01

    This paper discusses two popular policies used by housing authorities to assign applicants to housing projects: first available unit and priority assignment policies. The policies are compared according to their abilities to integrate housing projects, applicant assignment probabilities, and mean waiting times. Our results show that priority policies can successfully integrate public housing projects while first available unit policies can exacerbate segregation. These results support the rep...

  14. Surveillance Analysis Computer System (SACS) software requirements specification (SRS)

    International Nuclear Information System (INIS)

    This document is the primary document establishing requirements for the Surveillance Analysis Computer System (SACS) Database, an Impact Level 3Q system. The purpose is to provide the customer and the performing organization with the requirements for the SACS Project

  15. 40 CFR 141.712 - Unfiltered system Cryptosporidium treatment requirements.

    Science.gov (United States)

    2010-07-01

    ... (CONTINUED) WATER PROGRAMS (CONTINUED) NATIONAL PRIMARY DRINKING WATER REGULATIONS Enhanced Treatment for Cryptosporidium Treatment Technique Requirements § 141.712 Unfiltered system Cryptosporidium treatment... water monitoring required under § 141.701(a), unfiltered systems must calculate the arithmetic mean...

  16. Pulse source requirements for OTDM systems

    DEFF Research Database (Denmark)

    Clausen, Anders; Poulsen, Henrik Nørskov; Oxenløwe, Leif Katsuo;

    2003-01-01

    A simulation model for investigating the impact of incoherent crosstalk due to pulse tail overlapping is proposed. Requirements to pulse width and pulse tail extinction ratio introducing a maximum of 1 dB penalty is extracted.......A simulation model for investigating the impact of incoherent crosstalk due to pulse tail overlapping is proposed. Requirements to pulse width and pulse tail extinction ratio introducing a maximum of 1 dB penalty is extracted....

  17. 23 CFR 973.204 - Management systems requirements.

    Science.gov (United States)

    2010-04-01

    ... system; (2) A process to operate and maintain the management systems and their associated databases; (3... 23 Highways 1 2010-04-01 2010-04-01 false Management systems requirements. 973.204 Section 973.204... Indian Affairs Management Systems § 973.204 Management systems requirements. (a) The BIA, in...

  18. 46 CFR 16.500 - Management Information System requirements.

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 1 2010-10-01 2010-10-01 false Management Information System requirements. 16.500... CHEMICAL TESTING Management Information System § 16.500 Management Information System requirements. (a) Data collection. (1) All marine employers must submit drug testing program data required by 49 CFR...

  19. National Ignition Facility sub-system design requirements ancillary systems SSDR 1.5.6

    Energy Technology Data Exchange (ETDEWEB)

    Spann, J.; Reed, R.; VanArsdall, P.; Bliss, E.

    1996-09-01

    This System Design Requirement document establishes the performance, design, development, and test requirements for the Ancillary Systems, which is part of the NIF Integrated Computer Control System (ICCS).

  20. System performance prognostic: context, issues and requirements

    OpenAIRE

    Cocheteux, Pierre; Voisin, Alexandre; Levrat, Eric; Iung, Benoît

    2010-01-01

    Maintenance plays now a critical role in manufacturing for achieving important cost savings and competitive advantage while preserving product and process conditions. Such a role suggests moving from conventional maintenance practices to predictive strategy. However industrial systems are complex and need to have a global view of the system health and its performance. Indeed a maintenance action has to be done at the right time according to the system performance and the component Remaining U...

  1. Inter-professional variability in the assignment and recording of acute toxicity grade using the RTOG system during prostate radiotherapy

    International Nuclear Information System (INIS)

    Background and purpose: To compare the routine acute toxicity documentation practices of therapists and oncologists using the RTOG lower GI and GU scales. Methods and materials: Ninety consecutive prostate radiotherapy patients were identified. The weekly urinary and rectal acute toxicity grades routinely documented by therapists and oncologists were collected retrospectively from radiotherapy charts. These data were paired together, and compared between the professional groups. Results: Only RTOG acute toxicity grades between 0 and 2 were recorded by either group. The overall rate of documentation was high (97% therapists/86% oncologists), but the rate of quantitative documentation was low from the oncologists (46%) who used a free-form text field for recording purposes. There was no significant difference in the incidence of maximum grade of acute toxicity reported by either professional group (p > 0.1). There was good RTOG score concordance between the observer groups (κ = 0.756), with pair-wise absolute agreement in 76%. Pair-wise discrepancies between the observers were commonly attributable to differences in the time/date of assessment. Conclusions: Despite some methodological limitations, this study found that therapist-assessed RTOG acute toxicity grades demonstrated a good level of agreement with the grades assigned by their oncologist colleagues

  2. The Mechanism Design Approach to Student Assignment

    OpenAIRE

    Pathak, Parag A.

    2011-01-01

    The mechanism design approach to student assignment involves the theoretical, empirical, and experimental study of systems used to allocate students into schools around the world. Recent practical experience designing systems for student assignment has raised new theoretical questions for the theory of matching and assignment. This article reviews some of this recent literature, highlighting how issues from the field motivated theoretical developments and emphasizing how the dialogue may be a...

  3. 17 CFR 242.301 - Requirements for alternative trading systems.

    Science.gov (United States)

    2010-04-01

    ... trading systems. 242.301 Section 242.301 Commodity and Securities Exchanges SECURITIES AND EXCHANGE... FUTURES Regulation Ats-Alternative Trading Systems § 242.301 Requirements for alternative trading systems. (a) Scope of section. An alternative trading system shall comply with the requirements in...

  4. INTELLIGENT MANAGEMENT OF THE QUALITY OF SYSTEMS BY SOLVING A GENERALIZED ASSIGNMENT PROBLEM WITH THE USE OF ASC-ANALYSIS AND "EIDOS-X++" SYSTEM

    Directory of Open Access Journals (Sweden)

    Lutsenko Y. V.

    2015-05-01

    Full Text Available The quality of a system is seen as an emergent property of systems, due to their composition and structure, and it reflects their functionality, reliability and cost. Therefore, when we speak about quality management, the purpose of management is the formation of pre-defined system properties of the object of management. The stronger the object of the control expresses its system properties, the stronger the nonlinearity manifests of the object: both the dependence of the management factors from each other, and the dependence of the results of the action of some factors from the actions of others. Therefore, the problem of quality management is that in the management process the management object itself changes qualitatively, i.e. it changes its level of consistency, the degree of determinism and the transfer function itself. This problem can be viewed as several tasks: First is the system identification of the condition of the object of management, 2nd – making decisions about controlling influence that changes the composition of the control object in a way its quality maximally increases at minimum costs. To solve the 2nd problem we have proposed an application of the component selection of the object by functions based on the resources allocated for the implementation of different functions; costs associated with the choice of the components and the degree of compliance of various components to their functional purpose. In fact, we have proposed a formulation and a solution of the new generalization of a variant of the assignment problem: "multi backpack", which differs from the known with the fact that the selection has been based not only on the resources and costs, but also with taking into account the degree of compliance of the components to their functional purpose. A mathematical model, which provides a solution to the 1st problem, and reflecting the degree of compliance of the components to their functionality, as well as the entire

  5. A novel way of amino acid-specific assignment in 1H-15N HSQC spectra with a wheat germ cell-free protein synthesis system

    International Nuclear Information System (INIS)

    For high-throughput protein structural analyses, it is indispensable to develop a reliable protein overexpression system. Although many protein overexpression systems, such as ones utilizing E. coli cells, have been developed, a lot of proteins functioning in solution still were synthesized as insoluble forms. Recently, a novel wheat germ cell-free protein synthesis system was developed, and many of such proteins were synthesized as soluble forms. This means that the applicability of this protein synthesis method to determination of the functional structures of soluble proteins. In our previous work, we synthesized 15N-labeled proteins with this wheat germ cell-free system, and confirmed this applicability on the basis of the strong similarity between the 1H-15N HSQC spectra for native proteins and the corresponding ones for synthesized ones.In this study, we developed a convenient and reliable method for amino acid selective assignment in 1H-15N HSQC spectra of proteins, using several inhibitors for transaminases and glutamine synthase in the process of protein synthesis. Amino acid selective assignment in 1H-15N HSQC spectra is a powerful means to monitor the features of proteins, such as folding, intermolecular interactions and so on. This is also the first direct experimental evidence of the presence of active transaminases and glutamine synthase in wheat germ extracts.Abbreviation: HSQC - heteronuclear single quantum coherence spectroscopy

  6. Salt Repository Project transportation system interface requirements: Transportation system/repository receiving facility interface requirements

    International Nuclear Information System (INIS)

    This report is a preliminary review of the interface between the transportation system and the repository receiving facility for a nuclear waste mined geologic disposal system in salt. Criteria for generic cask and facility designs are developed. These criteria are derived by examining the interfaces that occur as a result of the operations needed to receive nuclear waste at a repository. These criteria provide the basis for design of a safe, operable, practical nuclear waste receiving facility. The processing functions required to move the shipping unit from the gate into the unloading area and back to the gate for dispatch are described. Criteria for a generic receiving facility are discussed but no specific facility design is presented or evaluated. The criteria are stated in general terms to allow application to a wide variety of cask and facility designs. 9 refs., 6 figs., 4 tabs

  7. Traceability of Software Safety Requirements in Legacy Safety Critical Systems

    Science.gov (United States)

    Hill, Janice L.

    2007-01-01

    How can traceability of software safety requirements be created for legacy safety critical systems? Requirements in safety standards are imposed most times during contract negotiations. On the other hand, there are instances where safety standards are levied on legacy safety critical systems, some of which may be considered for reuse for new applications. Safety standards often specify that software development documentation include process-oriented and technical safety requirements, and also require that system and software safety analyses are performed supporting technical safety requirements implementation. So what can be done if the requisite documents for establishing and maintaining safety requirements traceability are not available?

  8. Online Discussion Assignments Improve Students' Class Preparation

    Science.gov (United States)

    Lineweaver, Tara T.

    2010-01-01

    To increase the number of students who read the text before class and to promote student interaction centering on text material, I developed an online discussion assignment as a required component of a cognitive psychology course. Across 2 studies, this assignment had a limited effect on examination performance, but students completing online…

  9. Requirements for the development of KNICS control system

    International Nuclear Information System (INIS)

    The aim of this report is to provide the designers with the requirements for the development of control systems that are classified as a non-safety grade in nuclear plants. Both the DCS as a controller and the control systems are being developed now by the KNICS R and D center. The non-safety control systems are designed by using the Distributed Control System (DCS). The functions of systems are to monitor and to control the plant in accurate and reliable. This report describes the system functions, design requirements, hardware and software requirements, interface requirements among control systems, and quality assurance requirements, based on the DCS. Each requirement is attended with the rationale so as to help the designer understand it by providing its basis. This description is also expected to provide the vital input of design specifications for the development of DCS in the future

  10. Replicating and Extending Research on the Partial Assignment Completion Effect: Is Sunk Cost Related to Partial Assignment Completion Strength?

    Science.gov (United States)

    Hawthorn-Embree, Meredith L.; Taylor, Emily P.; Skinner, Christopher H.; Parkhurst, John; Nalls, Meagan L.

    2014-01-01

    After students acquire a skill, mastery often requires them to choose to engage in assigned academic activities (e.g., independent seatwork, and homework). Although students may be more likely to choose to work on partially completed assignments than on new assignments, the partial assignment completion (PAC) effect may not be very powerful. The…

  11. Historical WBAN ID Assignments

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — 4"x6" index cards represent the first written assignments of Weather Bureau Army Navy (WBAN) station identifier numbers by the National Climatic Data Center....

  12. Security Requirements for Spent Fuel Storage Systems

    International Nuclear Information System (INIS)

    The U.S. Nuclear Regulatory Commission (Commission or NRC) requires high assurance of adequate protection of public health and safety and the common defense and security for the storage of spent nuclear fuel. Following the terrorist attacks of September 11, 2001, the NRC has achieved this requisite high assurance for all independent spent fuel storage installations (ISFSIs) through a combination of existing security regulations and the issuance of new security orders to individual licensees. However, the NRC's current security regulations for ISFSIs are quite complex and pose challenges both to NRC staff and to the regulated industry. This regulatory complexity is due to multiple factors, including: two different types of ISFSI licenses (general licenses and specific licenses) and varying applicability of regulations based upon whether the ISFSI is collocated with an operating power reactor, collocated with a decommissioning power reactor, or is located away from any power reactors. The NRC's ISFSI security regulations were last comprehensively updated in the early 1990's. Moreover, the nature and characteristics of the threat environment have evolved significantly since that time. The Commission has directed the NRC staff to begin development of a risk-informed and performance-based update to the ISFSI security regulations which will enhance the ISFSI security regulations, while continuing to ensure the common defense and security and public health and safety are adequately protected under the current threat environment. The NRC staff is developing the technical bases supporting this ISFSI security rulemaking. The NRC's specific goals for this rulemaking are to update ISFSI security requirements to apply consistently to both types of ISFSI licensees, to improve the clarity of NRC regulations, to generically incorporate the provisions of the post-9/11 security orders, and to incorporate the Commission's direction on several specific policy issues. The Commission

  13. Development of materials supply system requirements

    OpenAIRE

    Brynning, Nicklas; Kihlström, Joakim

    2010-01-01

    In industry today, the need for excellent product development and realization in many different aspects is increasing. This calls for excellent quality, while at the same time time-to-market is increasingly important. A concurrent engineering (CE) approach is directed towards simultaneously developing different aspects of product realization in order to enhance both quality and speed. This thesis deals with the internal materials supply system (MSS) from a CE approach. Logistics aspects are o...

  14. Requirement analysis of an intelligent, redundant, actuation system

    Science.gov (United States)

    De Feo, P.; Shih, K. C.

    1986-01-01

    The reliability and fault tolerance requirements of integrated, critical, digital fly-by-wire control systems for advanced military and civil aircraft requires redundant, reconfigurable implementations of the actuation system. An effective way for controlling the actuators and implementing the required fault detection and reconfiguration strategies is by means of dedicated microprocessors. This paper describes a laboratory implementation of a flexible intelligent redundant actuation system capable of demonstrating the concept and analyzing a variety of configurations and technical issues.

  15. CH2M Hill Hanford Group, Inc., Standards and Requirements Identification Document (SRID) Requirements Management System and Requirements Specification

    International Nuclear Information System (INIS)

    The current Tank Farm Contractor (TFC) for the U. S. Department of Energy, Office of River Protection (ORP), River Protection Project (RPP), CH2M Hill Hanford Group, Inc. (CHG), will use a computer based requirements management system. The system will serve as a tool to assist in identifying, capturing, and maintaining the Standards/Requirements Identification Document (S/RID) requirements and links to implementing procedures and other documents. By managing requirements as one integrated set, CHG will be able to carry out its mission more efficiently and effectively. CHG has chosen the Dynamic Object Oriented Requirements System (DOORS(trademark)) as the preferred computer based requirements management system. Accordingly, the S/RID program will use DOORS(trademark). DOORS(trademark) will replace the Environmental Requirements Management Interface (ERMI) system as the tool for S/RID data management. The DOORS(trademark) S/RID test project currently resides on the DOORSTM test server. The S/RID project will be migrated to the DOORS(trademark) production server. After the migration the S/RID project will be considered a production project and will no longer reside on the test server

  16. Breast imaging reporting and data system (BI-RADS) lexicon for breast MRI: Interobserver variability in the description and assignment of BI-RADS category

    Energy Technology Data Exchange (ETDEWEB)

    El Khoury, Mona, E-mail: monelkhoury@gmail.com [Centre Hospitalier Universitaire de Montréal, Breast Centre, Radiology Department, 3840 Rue Saint Urbain, Montréal, QC H2W1T8 (Canada); Lalonde, Lucie; David, Julie; Labelle, Maude [Centre Hospitalier Universitaire de Montréal, Breast Centre, Radiology Department, 3840 Rue Saint Urbain, Montréal, QC H2W1T8 (Canada); Mesurolle, Benoit [Centre Hospitalier Universitaire de McGill, Cedar Breast Centre, Radiology Department, 687 Pine Avenue West, Montreal, QC H3A1A1 (Canada); Trop, Isabelle [Centre Hospitalier Universitaire de Montréal, Breast Centre, Radiology Department, 3840 Rue Saint Urbain, Montréal, QC H2W1T8 (Canada)

    2015-01-15

    Highlights: • The use of BI-RADS lexicon in interpreting breast MRI examinations is beneficial. • Our study shows: (a) moderate to substantial agreement between observers and (b) better agreement in interpreting mass than non-mass enhancement (NME). • Careful analysis of the NME should be done to help detect cancer as early as possible. - Abstract: Purpose: To retrospectively evaluate interobserver variability between breast radiologists when describing abnormal enhancement on breast MR examinations and assigning a BI-RADS category using the Breast Imaging Reporting and Data System (BI-RADS) terminology. Materials and methods: Five breast radiologists blinded to patients’ medical history and pathologic results retrospectively and independently reviewed 257 abnormal areas of enhancement on breast MRI performed in 173 women. Each radiologist described the focal enhancement using BI-RADS terminology and assigned a final BI-RADS category. Krippendorff's α coefficient of agreement was used to asses interobserver variability. Results: All radiologists agreed on the morphology of enhancement in 183/257 (71%) lesions, yielding a substantial agreement (Krippendorff's α = 0.71). Moderate agreement was obtained for mass descriptors – shape, margins and internal enhancement – (α = 0.55, 0.51 and 0.45 respectively) and NME (non-mass enhancement) descriptors – distribution and internal enhancement – (α = 0.54 and 0.43). Overall substantial agreement was obtained for BI-RADS category assignment (α = 0.71). It was however only moderate (α = 0.38) for NME compared to mass (α = 0.80). Conclusion: Our study shows good agreement in describing mass and NME on a breast MR examination but a better agreement in predicting malignancy for mass than NME.

  17. Materials and fabrication requirements for APWR systems

    International Nuclear Information System (INIS)

    Materials specifications for advanced pressurized water-cooled reactor (APWR) systems are generally based on existing designs, with improved materials and fabrication procedures being developed to counter known degradation effects. In this paper, materials ageing and degradation mechanisms in PWR primary circuit pressure boundary components (i.e. the reactor pressure vessel (RPV), control rod drive mechanisms (CRDMs), coolant piping, coolant pump casing, pressurizer, and steam generators) are reviewed. Important degradation mechanisms include irradiation embrittlement of the RPV, thermal ageing embrittlement of ferritic (e.g. the pressurizer) and cast austenitic (e.g. coolant pump casing and pipe elbows) steel components and environmentally assisted cracking of steam generator tubing and CRDM penetrations. Improved materials specifications and component design and fabrication issues affecting the integrity of the pressure boundary are discussed in the light of these materials problems. Improved fabrication procedures adopted for Sizewell B, such as the utilization of ring forgings to eliminate axial welds in the RPV and steam generator shells and the use of one-piece castings for coolant pump casings, provide a benchmark against which other APWR designs may be judged. (author)

  18. Transportation system requirements document. Revision 1 DCN01. Supplement

    International Nuclear Information System (INIS)

    The original Transportation System Requirements Document described the functions to be performed by and the technical requirements for the Transportation System to transport spent nuclear fuel (SNF) and high-level radioactive waste (HLW) from Purchaser and Producer sites to a Civilian Radioactive Waste Management System (CRWMS) site, and between CRWMS sites. The purpose of that document was to define the system-level requirements. These requirements include design and operations requirements to the extent they impact on the development of the physical segments of Transportation. The document also presented an overall description of Transportation, its functions, its segments, and the requirements allocated to the segments and the system-level interfaces with Transportation. This revision of the document contains only the pages that have been modified

  19. Using probability modelling and genetic parentage assignment to test the role of local mate availability in mating system variation.

    Science.gov (United States)

    Blyton, Michaela D J; Banks, Sam C; Peakall, Rod; Lindenmayer, David B

    2012-02-01

    The formal testing of mating system theories with empirical data is important for evaluating the relative importance of different processes in shaping mating systems in wild populations. Here, we present a generally applicable probability modelling framework to test the role of local mate availability in determining a population's level of genetic monogamy. We provide a significance test for detecting departures in observed mating patterns from model expectations based on mate availability alone, allowing the presence and direction of behavioural effects to be inferred. The assessment of mate availability can be flexible and in this study it was based on population density, sex ratio and spatial arrangement. This approach provides a useful tool for (1) isolating the effect of mate availability in variable mating systems and (2) in combination with genetic parentage analyses, gaining insights into the nature of mating behaviours in elusive species. To illustrate this modelling approach, we have applied it to investigate the variable mating system of the mountain brushtail possum (Trichosurus cunninghami) and compared the model expectations with the outcomes of genetic parentage analysis over an 18-year study. The observed level of monogamy was higher than predicted under the model. Thus, behavioural traits, such as mate guarding or selective mate choice, may increase the population level of monogamy. We show that combining genetic parentage data with probability modelling can facilitate an improved understanding of the complex interactions between behavioural adaptations and demographic dynamics in driving mating system variation. PMID:21899620

  20. FORMATION OF REQUIREMENTS FOR THE INFORMATION SYSTEM COMPANY

    OpenAIRE

    Nekrasov, M.; Belov, V.

    2015-01-01

    In this article discusses the using of corporate information systems for the needs of enterprise management, provides an overview of the most relevant trends in the sphere of forming and representation of requirements for the information system.

  1. System biology approach to detect and assign biological functions and regulator genes to feed efficiency traits in Nellore cattle

    DEFF Research Database (Denmark)

    Alexandre, Pâmela; Kogelman, Lisette; Santana, Miguel; Eler, Joanir; Kadarmideen, Haja; Fukumasu, Heidge

    The objective of this study was to use a system biology approach to identify biological mechanisms involved on feed efficiency in Nellore cattle and its possible regulator genes. Two modules of co-expressed and highly inter-connected genes correlated to feed efficiency were identified as well as ...

  2. Requirements documentation of a controlled complex motion system

    OpenAIRE

    Carli, Alessandro; Andreozzi, Stefano; Fiaschetti, Andrea; Oboe, Roberto; Ohnishi, Kouhei

    2008-01-01

    The implementation of a controlled complex motion system requires integration of technologically heterogeneous subsystems and collaboration of experts, skilled in different technologies. To attain the desired requirements it is suitable to apply a design procedure organized according to a systematic approach, divided in different steps and representing standalone activities. The fundamental steps are the elicitation, decomposition and formalization of requirements. The systematic procedure pr...

  3. 19 CFR 143.5 - System performance requirements.

    Science.gov (United States)

    2010-04-01

    ... 19 Customs Duties 2 2010-04-01 2010-04-01 false System performance requirements. 143.5 Section 143... performance requirements. The performance requirements and operational standards for electronic data filing...), which is updated periodically. The User Support Services Division, Customs Headquarters, upon...

  4. Solid Waste Information and Tracking System (SWITS) Software Requirements Specification

    International Nuclear Information System (INIS)

    This document is the primary document establishing requirements for the Solid Waste Information and Tracking System (SWITS) as it is converted to a client-server architecture. The purpose is to provide the customer and the performing organizations with the requirements for the SWITS in the new environment. This Software Requirement Specification (SRS) describes the system requirements for the SWITS Project, and follows the PHMC Engineering Requirements, HNF-PRO-1819, and Computer Software Qualify Assurance Requirements, HNF-PRO-309, policies. This SRS includes sections on general description, specific requirements, references, appendices, and index. The SWITS system defined in this document stores information about the solid waste inventory on the Hanford site. Waste is tracked as it is generated, analyzed, shipped, stored, and treated. In addition to inventory reports a number of reports for regulatory agencies are produced

  5. Solid Waste Information and Tracking System (SWITS) Software Requirements Specification

    Energy Technology Data Exchange (ETDEWEB)

    MAY, D.L.

    2000-03-22

    This document is the primary document establishing requirements for the Solid Waste Information and Tracking System (SWITS) as it is converted to a client-server architecture. The purpose is to provide the customer and the performing organizations with the requirements for the SWITS in the new environment. This Software Requirement Specification (SRS) describes the system requirements for the SWITS Project, and follows the PHMC Engineering Requirements, HNF-PRO-1819, and Computer Software Qualify Assurance Requirements, HNF-PRO-309, policies. This SRS includes sections on general description, specific requirements, references, appendices, and index. The SWITS system defined in this document stores information about the solid waste inventory on the Hanford site. Waste is tracked as it is generated, analyzed, shipped, stored, and treated. In addition to inventory reports a number of reports for regulatory agencies are produced.

  6. Assignments of proton populations in dough and bread using NMR relaxometry of starch, gluten, and flour model systems.

    Science.gov (United States)

    Bosmans, Geertrui M; Lagrain, Bert; Deleu, Lomme J; Fierens, Ellen; Hills, Brian P; Delcour, Jan A

    2012-05-30

    Starch-water, gluten-water, and flour-water model systems as well as straight-dough bread were investigated with (1)H NMR relaxometry using free induction decay and Carr-Purcell-Meiboom-Gill pulse sequences. Depending on the degree of interaction between polymers and water, different proton populations could be distinguished. The starch protons in the starch-water model gain mobility owing to amylopectin crystal melting, granule swelling, and amylose leaching, whereas water protons lose mobility due to increased interaction with starch polymers. Heating of the gluten-water sample induces no pronounced changes in proton distributions. Heating changes the proton distributions of the flour-water and starch-water models in a similar way, implying that the changes are primarily attributable to starch gelatinization. Proton distributions of the heated flour-water model system and those of fresh bread crumb are very similar. This allows identifying the different proton populations in bread on the basis of the results from the model systems. PMID:22553963

  7. Clinical and Management Requirements for Computerized Mental Health Information Systems

    OpenAIRE

    Levinton, Paula H.; Dunning, Tessa F.E.

    1980-01-01

    Information requirements of mental health providers are sufficiently different from those of other health care managers to warrant a different approach to the development of management information systems (MIS). Advances in computer technology and increased demands for fiscal accountability have led to developing integrated mental health information systems (MHIS) that support clinical and management requirements.

  8. 50 CFR 660.312 - Vessel Monitoring System (VMS) requirements.

    Science.gov (United States)

    2010-10-01

    ... 50 Wildlife and Fisheries 9 2010-10-01 2010-10-01 false Vessel Monitoring System (VMS) requirements. 660.312 Section 660.312 Wildlife and Fisheries FISHERY CONSERVATION AND MANAGEMENT, NATIONAL... West Coast Groundfish Fisheries § 660.312 Vessel Monitoring System (VMS) requirements. (a) What is...

  9. 50 CFR 660.14 - Vessel Monitoring System (VMS) requirements.

    Science.gov (United States)

    2010-10-01

    ... 50 Wildlife and Fisheries 9 2010-10-01 2010-10-01 false Vessel Monitoring System (VMS) requirements. 660.14 Section 660.14 Wildlife and Fisheries FISHERY CONSERVATION AND MANAGEMENT, NATIONAL... West Coast Groundfish Fisheries § 660.14 Vessel Monitoring System (VMS) requirements. (a) What is a...

  10. 27 CFR 25.41 - Measuring system required.

    Science.gov (United States)

    2010-04-01

    ... 27 Alcohol, Tobacco Products and Firearms 1 2010-04-01 2010-04-01 false Measuring system required..., DEPARTMENT OF THE TREASURY LIQUORS BEER Measurement of Beer § 25.41 Measuring system required. The brewer shall accurately and reliably measure the quantity of beer transferred from the brewery cellars...

  11. 47 CFR 73.33 - Antenna systems; showing required.

    Science.gov (United States)

    2010-10-01

    ... 47 Telecommunication 4 2010-10-01 2010-10-01 false Antenna systems; showing required. 73.33... RADIO BROADCAST SERVICES AM Broadcast Stations § 73.33 Antenna systems; showing required. (a) An application for authority to install a broadcast antenna shall specify a definite site and include...

  12. BOUNDED MINIMUM INHERENT AVAILABILITY REQUIREMENTS FOR THE SYSTEM DESCRIPTION DOCUMENTS

    International Nuclear Information System (INIS)

    The purpose of this analysis is to establish bounded minimum inherent availability requirements for the Mined Geologic Disposal System (MGDS) System Description Documents (SDDs). The purpose of the bounded minimum inherent availability is to provide a lower bound on availability which will allow design to meet throughput requirements while not affecting the ability of the items to perform their intended safety function

  13. 7 CFR 1767.12 - Accounting system requirements.

    Science.gov (United States)

    2010-01-01

    ... Borrowers, herein, which prescribes accounting principles to be applied to specific factual circumstances. ... 7 Agriculture 12 2010-01-01 2010-01-01 false Accounting system requirements. 1767.12 Section 1767..., DEPARTMENT OF AGRICULTURE (CONTINUED) ACCOUNTING REQUIREMENTS FOR RUS ELECTRIC BORROWERS Uniform System...

  14. Power system requirements and definition for lunar and Mars outposts

    International Nuclear Information System (INIS)

    NASA is currently planning a national program for the permanent human presence on the Moon and Mars. Power generation, conversion, storage and distribution is an enabling requirement for conducting all activities on these planetary surfaces. These power systems will be required to supply power to support habitation, transportation, construction, and workshop facilities. Candidate power systems being considered for outpost facilities (stationary power systems) and vehicles (mobile systems) include solar, chemical, isotopic, and reactor. The current power strategy uses an initial outpost power system composed of photovoltaic arrays for daytime energy needs and regenerative fuel cells for power during the long lunar night. As day and night power demands grow, the outpost transitions to nuclear-based power generation, using thermoelectric conversion initially, and evolving to a dynamic conversion system. With this concept as a guideline, a set of requirements has been established and a reference definition of candidate power systems meeting these requirements have been identified

  15. USING GROUNDED THEORY AS A METHOD FOR SYSTEM REQUIREMENTS ANALYSIS

    OpenAIRE

    Mohanad Halaweh

    2012-01-01

    Requirements analysis (RA) is a key phase in information systems (IS) development. During this phase, system analysts use different techniques and methods to elicit and structure the system’s requirements. The current paper rationalises the use of grounded theory (GT) as an alternative socio-technical approach to requirement analysis. It will establish theoretically that applying grounded theory procedures and techniques will support and add value to the analysis phase as it solves some probl...

  16. Basic Requirements for Cables of Systems Important to NPP Safety

    International Nuclear Information System (INIS)

    In view of the need for equipment upgrades at Ukrainian nuclear power plants, the replacement of cables, as an integral part of any system, becomes important. There is no document in Ukraine that combines requirements for cables of systems important to nuclear safety. The paper systematizes the technical requirements of national regulatory documents on nuclear and radiation safety in relation to cable products. The most important requirements for selecting cables are fire safety, resistance to high temperatures, humidity and pressure, resistance to ionizing radiation, seismic resistance and electromagnetic compatibility. The use of cables in the NPP containment and safety systems imposes on them the most stringent requirements as regards nuclear and radiation safety in plant operation. The paper identifies features and operating conditions for cable lines as part of NPP safety systems and shows the general classification of cable products. Development of a regulatory document to combine requirements for cables of safety systems will facilitate their selection during upgrading.

  17. Relevant Explanations: Allowing Disjunctive Assignments

    OpenAIRE

    Shimony, Solomon Eyal

    2013-01-01

    Relevance-based explanation is a scheme in which partial assignments to Bayesian belief network variables are explanations (abductive conclusions). We allow variables to remain unassigned in explanations as long as they are irrelevant to the explanation, where irrelevance is defined in terms of statistical independence. When multiple-valued variables exist in the system, especially when subsets of values correspond to natural types of events, the over specification problem, alleviated by inde...

  18. 23 CFR 972.204 - Management systems requirements.

    Science.gov (United States)

    2010-04-01

    ... to operate and maintain the management systems and their associated databases; and (5) A process for... 23 Highways 1 2010-04-01 2010-04-01 false Management systems requirements. 972.204 Section 972.204... WILDLIFE SERVICE MANAGEMENT SYSTEMS Fish and Wildlife Service Management Systems § 972.204...

  19. System requirements and design description for the environmental requirements management interface (ERMI)

    International Nuclear Information System (INIS)

    This document describes system requirements and the design description for the Environmental Requirements Management Interface (ERMI). The ERMI database assists Tank Farm personnel with scheduling, planning, and documenting procedure compliance, performance verification, and selected corrective action tracking activities for Tank Farm S/RID requirements. The ERMI database was developed by Science Applications International Corporation (SAIC). This document was prepared by SAIC and edited by LMHC

  20. Design requirements of communication architecture of SMART safety system

    International Nuclear Information System (INIS)

    To develop the communication network architecture of safety system of SMART, the evaluation elements for reliability and performance factors are extracted from commercial networks and classified the required-level by importance. A predictable determinacy, status and fixed based architecture, separation and isolation from other systems, high reliability, verification and validation are introduced as the essential requirements of safety system communication network. Based on the suggested requirements, optical cable, star topology, synchronous transmission, point-to-point physical link, connection-oriented logical link, MAC (medium access control) with fixed allocation are selected as the design elements. The proposed architecture will be applied as basic communication network architecture of SMART safety system

  1. My Favorite Assignment.

    Science.gov (United States)

    Hebert, Margaret; And Others

    1991-01-01

    Contains seven brief articles which offer assignments designed to help students perform job searches, write job application letters, answer difficult questions, write letters of resignation, alleviate fears of public speaking, use the interview effectively in the business communication, and develop listening skills. (PRA)

  2. Teacher Requirements in the Composition Skills, Spelling, and Drama Instructional Systems and the Implications of the Requirements for Training Systems.

    Science.gov (United States)

    Ellis, Patricia; Lee, Dean R.

    This document describes teacher requirements in three different instructional systems and the implications of the requirements for teacher training. Short descriptions of the composition skills, spelling, and drama systems produced by the Southwest Regional Laboratory (SWRL) are given. Materials and procedures are briefly described for each…

  3. Design requirement for electrical system of an advanced research reactor

    Energy Technology Data Exchange (ETDEWEB)

    Jung, Hoan Sung; Kim, H. K.; Kim, Y. K.; Wu, J. S.; Ryu, J. S

    2004-12-01

    An advanced research reactor is being designed since 2002 and the conceptual design has been completed this year for the several types of core. Also the fuel was designed for the potential cores. But the process system, the I and C system, and the electrical system design are under pre-conceptual stage. The conceptual design for those systems will be developed in the next year. Design requirements for the electrical system set up to develop conceptual design. The same goals as reactor design - enhance safety, reliability, economy, were applied for the development of the requirements. Also the experience of HANARO design and operation was based on. The design requirements for the power distribution, standby power supply, and raceway system will be used for the conceptual design of electrical system.

  4. Design requirement for electrical system of an advanced research reactor

    International Nuclear Information System (INIS)

    An advanced research reactor is being designed since 2002 and the conceptual design has been completed this year for the several types of core. Also the fuel was designed for the potential cores. But the process system, the I and C system, and the electrical system design are under pre-conceptual stage. The conceptual design for those systems will be developed in the next year. Design requirements for the electrical system set up to develop conceptual design. The same goals as reactor design - enhance safety, reliability, economy, were applied for the development of the requirements. Also the experience of HANARO design and operation was based on. The design requirements for the power distribution, standby power supply, and raceway system will be used for the conceptual design of electrical system

  5. Knowledge-based support system for requirement elaboration in design

    International Nuclear Information System (INIS)

    Design requirements are the seeds of every design activity, but elicitation and formalization of them are not easy tasks. This paper proposes a method to support designers in such requirement elaboration process with a computer. In this method the cognitive work space of designers is modeled by abstraction and structural hierarchies, and supporting functions of knowledge-based requirement elaboration, requirement classification and assessment of contentment status of requirements are provided on this framework. A prototype system was developed and tested using fast breeder reactor design. (author)

  6. Space Transportation System Availability Requirement and Its Influencing Attributes Relationships

    Science.gov (United States)

    Rhodes, Russell E.; Adams, Timothy C.; McCleskey, Carey M.

    2008-01-01

    It is important that engineering and management accept the need for an availability requirement that is derived with its influencing attributes. It is the intent of this paper to provide the visibility of relationships of these major attribute drivers (variables) to each other and the resultant system inherent availability. Also important to provide bounds of the variables providing engineering the insight required to control the system's engineering solution, e.g., these influencing attributes become design requirements also. These variables will drive the need to provide integration of similar discipline functions or technology selection to allow control of the total parts count. The relationship of selecting a reliability requirement will place a constraint on parts count to achieve a given availability requirement or if allowed to increase the parts count will drive the system reliability requirement higher. They also provide the understanding for the relationship of mean repair time (or mean down time) to maintainability, e.g., accessibility for repair, and both the mean time between failure, e.g., reliability of hardware and availability. The concerns and importance of achieving a strong availability requirement is driven by the need for affordability, the choice of using the two launch solution for the single space application, or the need to control the spare parts count needed to support the long stay in either orbit or on the surface of the moon. Understanding the requirements before starting the architectural design concept will avoid considerable time and money required to iterate the design to meet the redesign and assessment process required to achieve the results required of the customer's space transportation system. In fact the impact to the schedule to being able to deliver the system that meets the customer's needs, goals, and objectives may cause the customer to compromise his desired operational goal and objectives resulting in considerable

  7. Space Transportation System Availability Requirements and Its Influencing Attributes Relationships

    Science.gov (United States)

    Rhodes, Russell E.; Adams, Timothy C.; McCleskey, Carey M.

    2008-01-01

    It is important that engineering and management accept the need for an availability requirement that is derived with its influencing attributes. It is the intent of this paper to provide the visibility of relationships of these major attribute drivers (variables) to each other and the resultant system inherent availability. Also important to provide bounds of the variables providing engineering the insight required to control the system's engineering solution, e.g., these influencing attributes become design requirements also. These variables will drive the need to provide integration of similar discipline functions or technology selection to allow control of the total parts count. The relationship of selecting a reliability requirement will place a constraint on parts count to achieve a given availability requirement or if allowed to increase the parts count will drive the system reliability requirement higher. They also provide the understanding for the relationship of mean repair time (or mean down time) to maintainability, e.g., accessibility for repair, and both the mean time between failure, e.g., reliability of hardware and availability. The concerns and importance of achieving a strong availability requirement is driven by the need for affordability, the choice of using the two launch solution for the single space application, or the need to control the spare parts count needed to support the long stay in either orbit or on the surface of the moon. Understanding the requirements before starting the architectural design concept will avoid considerable time and money required to iterate the design to meet the redesign and assessment process required to achieve the results required of the customer's space transportation system. In fact the impact to the schedule to being able to deliver the system that meets the customer's needs, goals, and objectives may cause the customer to compromise his desired operational goal and objectives resulting in considerable

  8. Digital Avionics Information System (DAIS): Training Requirements Analysis Model (TRAMOD).

    Science.gov (United States)

    Czuchry, Andrew J.; And Others

    The training requirements analysis model (TRAMOD) described in this report represents an important portion of the larger effort called the Digital Avionics Information System (DAIS) Life Cycle Cost (LCC) Study. TRAMOD is the second of three models that comprise an LCC impact modeling system for use in the early stages of system development. As…

  9. System Requirements for On-Line and Batch Retrieval.

    Science.gov (United States)

    American Society for Information Science, Washington, DC. Special Interest Group on Computerized Retrieval Services.

    Three papers on system requirements for on-line and batch retrieval presented at the American Society for Information Science (ASIS) annual meeting are included here. At G.D. Searle, data for records related to pharmacology screening are used in a batch system, and an on-line system is used to search information on mutagenic, carcinogenic, and…

  10. 5 CFR 9701.405 - Performance management system requirements.

    Science.gov (United States)

    2010-01-01

    ... 5 Administrative Personnel 3 2010-01-01 2010-01-01 false Performance management system... HOMELAND SECURITY HUMAN RESOURCES MANAGEMENT SYSTEM Performance Management § 9701.405 Performance... performance management systems for DHS employees, subject to the requirements set forth in this subpart....

  11. Tank waste remediation system functions and requirements document

    International Nuclear Information System (INIS)

    This is the Tank Waste Remediation System (TWRS) Functions and Requirements Document derived from the TWRS Technical Baseline. The document consists of several text sections that provide the purpose, scope, background information, and an explanation of how this document assists the application of Systems Engineering to the TWRS. The primary functions identified in the TWRS Functions and Requirements Document are identified in Figure 4.1 (Section 4.0) Currently, this document is part of the overall effort to develop the TWRS Functional Requirements Baseline, and contains the functions and requirements needed to properly define the top three TWRS function levels. TWRS Technical Baseline information (RDD-100 database) included in the appendices of the attached document contain the TWRS functions, requirements, and architecture necessary to define the TWRS Functional Requirements Baseline. Document organization and user directions are provided in the introductory text. This document will continue to be modified during the TWRS life-cycle

  12. Tank waste remediation system functions and requirements document

    Energy Technology Data Exchange (ETDEWEB)

    Carpenter, K.E

    1996-10-03

    This is the Tank Waste Remediation System (TWRS) Functions and Requirements Document derived from the TWRS Technical Baseline. The document consists of several text sections that provide the purpose, scope, background information, and an explanation of how this document assists the application of Systems Engineering to the TWRS. The primary functions identified in the TWRS Functions and Requirements Document are identified in Figure 4.1 (Section 4.0) Currently, this document is part of the overall effort to develop the TWRS Functional Requirements Baseline, and contains the functions and requirements needed to properly define the top three TWRS function levels. TWRS Technical Baseline information (RDD-100 database) included in the appendices of the attached document contain the TWRS functions, requirements, and architecture necessary to define the TWRS Functional Requirements Baseline. Document organization and user directions are provided in the introductory text. This document will continue to be modified during the TWRS life-cycle.

  13. Towards Requirements in Systems Engineering for Aerospace IVHM Design

    Science.gov (United States)

    Saxena, Abhinav; Roychoudhury, Indranil; Lin, Wei; Goebel, Kai

    2013-01-01

    Health management (HM) technologies have been employed for safety critical system for decades, but a coherent systematic process to integrate HM into the system design is not yet clear. Consequently, in most cases, health management resorts to be an after-thought or 'band-aid' solution. Moreover, limited guidance exists for carrying out systems engineering (SE) on the subject of writing requirements for designs with integrated vehicle health management (IVHM). It is well accepted that requirements are key to developing a successful IVHM system right from the concept stage to development, verification, utilization, and support. However, writing requirements for systems with IVHM capability have unique challenges that require the designers to look beyond their own domains and consider the constraints and specifications of other interlinked systems. In this paper we look at various stages in the SE process and identify activities specific to IVHM design and development. More importantly, several relevant questions are posed that system engineers must address at various design and development stages. Addressing these questions should provide some guidance to systems engineers towards writing IVHM related requirements to ensure that appropriate IVHM functions are built into the system design.

  14. State analysis requirements database for engineering complex embedded systems

    Science.gov (United States)

    Bennett, Matthew B.; Rasmussen, Robert D.; Ingham, Michel D.

    2004-01-01

    It has become clear that spacecraft system complexity is reaching a threshold where customary methods of control are no longer affordable or sufficiently reliable. At the heart of this problem are the conventional approaches to systems and software engineering based on subsystem-level functional decomposition, which fail to scale in the tangled web of interactions typically encountered in complex spacecraft designs. Furthermore, there is a fundamental gap between the requirements on software specified by systems engineers and the implementation of these requirements by software engineers. Software engineers must perform the translation of requirements into software code, hoping to accurately capture the systems engineer's understanding of the system behavior, which is not always explicitly specified. This gap opens up the possibility for misinterpretation of the systems engineer's intent, potentially leading to software errors. This problem is addressed by a systems engineering tool called the State Analysis Database, which provides a tool for capturing system and software requirements in the form of explicit models. This paper describes how requirements for complex aerospace systems can be developed using the State Analysis Database.

  15. Formal Requirements Modeling for Reactive Systems with Coloured Petri Nets

    OpenAIRE

    Tjell, Simon

    2009-01-01

    This dissertation presents the contributions of seven publications all concerned with the application of Coloured Petri Nets (CPN) to requirements modeling for reactive systems. The publications are introduced along with relevant background material and related work, and their contributions to addressing a collection of generic challenges for requirements modeling are discussed. Firstly, two approaches to constructing CPN requirements models based on collections of Use Cases are presented. In...

  16. Development and analysis of SCR requirements tables for system scenarios

    Science.gov (United States)

    Callahan, John R.; Morrison, Jeffery L.

    1995-01-01

    We describe the use of scenarios to develop and refine requirement tables for parts of the Earth Observing System Data and Information System (EOSDIS). The National Aeronautics and Space Administration (NASA) is developing EOSDIS as part of its Mission-To-Planet-Earth (MTPE) project to accept instrument/platform observation requests from end-user scientists, schedule and perform requested observations of the Earth from space, collect and process the observed data, and distribute data to scientists and archives. Current requirements for the system are managed with tools that allow developers to trace the relationships between requirements and other development artifacts, including other requirements. In addition, the user community (e.g., earth and atmospheric scientists), in conjunction with NASA, has generated scenarios describing the actions of EOSDIS subsystems in response to user requests and other system activities. As part of a research effort in verification and validation techniques, this paper describes our efforts to develop requirements tables from these scenarios for the EOSDIS Core System (ECS). The tables specify event-driven mode transitions based on techniques developed by the Naval Research Lab's (NRL) Software Cost Reduction (SCR) project. The SCR approach has proven effective in specifying requirements for large systems in an unambiguous, terse format that enhance identification of incomplete and inconsistent requirements. We describe development of SCR tables from user scenarios and identify the strengths and weaknesses of our approach in contrast to the requirements tracing approach. We also evaluate the capabilities of both approach to respond to the volatility of requirements in large, complex systems.

  17. Formal Requirements Modeling for Reactive Systems with Coloured Petri Nets

    DEFF Research Database (Denmark)

    Tjell, Simon

    This dissertation presents the contributions of seven publications all concerned with the application of Coloured Petri Nets (CPN) to requirements modeling for reactive systems. The publications are introduced along with relevant background material and related work, and their contributions to...

  18. Requirements for containment system components in CANDU nuclear power plants

    International Nuclear Information System (INIS)

    This Standard specifies the requirements and establishes the rules for design, fabrication, and installation of pressure-retaining containment system components. In this Standard the term 'components' includes non registered items

  19. National Ignition Facility system design requirements conventional facilities SDR001

    Energy Technology Data Exchange (ETDEWEB)

    Hands, J.

    1996-04-09

    This System Design Requirements (SDR) document specifies the functions to be performed and the minimum design requirements for the National Ignition Facility (NIF) site infrastructure and conventional facilities. These consist of the physical site and buildings necessary to house the laser, target chamber, target preparation areas, optics support and ancillary functions.

  20. National Ignition Facility system design requirements conventional facilities SDR001

    International Nuclear Information System (INIS)

    This System Design Requirements (SDR) document specifies the functions to be performed and the minimum design requirements for the National Ignition Facility (NIF) site infrastructure and conventional facilities. These consist of the physical site and buildings necessary to house the laser, target chamber, target preparation areas, optics support and ancillary functions

  1. Verifying real-time systems against scenario-based requirements

    DEFF Research Database (Denmark)

    Larsen, Kim Guldstrand; Li, Shuhao; Nielsen, Brian;

    2009-01-01

    We propose an approach to automatic verification of real-time systems against scenario-based requirements. A real-time system is modeled as a network of Timed Automata (TA), and a scenario-based requirement is specified as a Live Sequence Chart (LSC). We define a trace-based semantics for a kerne...... problem. We show how this is accomplished in the context of the Uppaal model checker....

  2. The Management System for Facilities and Activities. Safety Requirements

    International Nuclear Information System (INIS)

    This publication establishes requirements for management systems that integrate safety, health, security, quality assurance and environmental objectives. A successful management system ensures that nuclear safety matters are not dealt with in isolation but are considered within the context of all these objectives. The aim of this publication is to assist Member States in establishing and implementing effective management systems that integrate all aspects of managing nuclear facilities and activities in a coherent manner. It details the planned and systematic actions necessary to provide adequate confidence that all these requirements are satisfied. Contents: 1. Introduction; 2. Management system; 3. Management responsibility; 4. Resource management; 5. Process implementation; 6. Measurement, assessment and improvement.

  3. Energy Emergency Management Information System (EEMIS): functional requirements

    Energy Technology Data Exchange (ETDEWEB)

    1980-10-17

    This report deals with the functional requirements of the Energy Emergency Management Information System (EEMIS) as it is defined for State level use (EEMIS-S). This report provides a technical description of the EEMIS-S requirements. These guidelines state that in order to create the widest practicable competition the system's requirements, with few exceptions, must be expressed in functional terms without reference to specific hardware or software products, and that wherever exceptions are made a statement of justification must be provided. In addition, these guidelines set forth a recommended maximum threshold limit of annual contract value for schedule contract procurements. Section 2.0 presents a general overview of the EEMIS structure in terms of requirements for vendor support. The functional requirements for each component are developed by section as: Teleprocessing Monitor Requirements, Section 3.0; EEMIS File Requirements, Section 4.0; Data Base Management Requirements, Section 5.0; Application Program Requirements, Section 6.0; and Utility Program Requirements, Section 7.0. The final Section, 8.0, justifies the use of the GSA Teleprocessing Service Program - Multiple Award Schedule Contracts (TSP-MASC) procurement process. The intent of this section is to substantiate, in this instance, the desirability of obtaining time-sharing vendor services to support EEMIS under a schedule contract, even if certain TSP-MASC threshold limits might be exceeded.

  4. Review of regulatory requirements for digital I and C systems

    International Nuclear Information System (INIS)

    This work analyzed and summarized systematically various regulatory requirements that are necessary to develop digital nuclear instrumentation and control (I and C) systems, especially safety systems. The requirements are categorized into system, hardware, software, and quality assurance aspects. This report provides the explanations of terms and abbreviations to help readers understand. Furthermore, appendices of this report summarize the code and standards corresponding to each principal regulatory requirement. The hierarchical structure of regulatory requirements has Nuclear Energy Laws, Enforcement Regulations of Nuclear Energy Laws, and Notifications of Ministry of Science and Technology as utmost level requirements [In case of the US, 10 CFR 50 Appendix A, 10 CFR 50 Appendix B, 10 CFR 50.55a(h), 10 CFR 50.49, etc.]. The requirements include the Draft Regulatory Guidelines for Digital I and C Systems [In case of the US, Standard Review Plan (NUREG-0800), Regulatory Guide, Branch Technical Position (BTP)], KEPIC as standards [In case of the US, IEEE Standards, IEC Standards, ISA, Military Standard, etc.], and various reports issued by Korea Institute of Nuclear Safety [In case of the US, NUREG reports, EPRI reports, etc.]. This report can be referred for the development of safety grade control equipment, plant protection system, and engineered safety feature actuation system

  5. A singular value sensitivity approach to robust eigenstructure assignment

    DEFF Research Database (Denmark)

    Søgaard-Andersen, Per; Trostmann, Erik; Conrad, Finn

    1986-01-01

    A design technique for improving the feedback properties of multivariable state feedback systems designed using eigenstructure assignment is presented. Based on a singular value analysis of the feedback properties a design parameter adjustment procedure is outlined. This procedure allows for the...... preservation of important properties of the initial design, by selecting only a subset of the design parameters for adjustment. The computational requirements are modest and straight-forward to implement with standard software. An example illustrating the method is included....

  6. Analyzing Software Requirements Errors in Safety-Critical, Embedded Systems

    Science.gov (United States)

    Lutz, Robyn R.

    1993-01-01

    This paper analyzes the root causes of safety-related software errors in safety-critical, embedded systems. The results show that software errors identified as potentially hazardous to the system tend to be produced by different error mechanisms than non- safety-related software errors. Safety-related software errors are shown to arise most commonly from (1) discrepancies between the documented requirements specifications and the requirements needed for correct functioning of the system and (2) misunderstandings of the software's interface with the rest of the system. The paper uses these results to identify methods by which requirements errors can be prevented. The goal is to reduce safety-related software errors and to enhance the safety of complex, embedded systems.

  7. Ground Systems Development Environment (GSDE) interface requirements analysis

    Science.gov (United States)

    Church, Victor E.; Philips, John; Hartenstein, Ray; Bassman, Mitchell; Ruskin, Leslie; Perez-Davila, Alfredo

    1991-01-01

    A set of procedural and functional requirements are presented for the interface between software development environments and software integration and test systems used for space station ground systems software. The requirements focus on the need for centralized configuration management of software as it is transitioned from development to formal, target based testing. This concludes the GSDE Interface Requirements study. A summary is presented of findings concerning the interface itself, possible interface and prototyping directions for further study, and results of the investigation of the Cronus distributed applications environment.

  8. Recent developments and trends in requirements management systems

    International Nuclear Information System (INIS)

    In a recent international meeting, five radioactive waste disposal organizations (NUMO/Japan; NAGRA/Switzerland; ONDRAF/NIRAS/Belgium; POSIVA/Finland; SKB/Sweden) have discussed the status and developments of RMS in their respective programs. The majority have already implemented an IT-based system, or, are testing and developing such systems. The level of detail of requirements depends on the stage of the program. Those approaching the license application have integrated all components of the repository concept, including the processes for the operational phase. Requirements management is closely associated with the quality management system. Combining requirement and decision-tracking has been expressed as an explicit goal for some programs. Caution was expressed regarding the expectations for the RMS being developed. There is a risk that such systems are perceived as expert systems that can derive decisions, which then will be unquestionably accepted. It is nevertheless recognized that they can be of great help in communicating with the various stakeholders and with relative ease demonstrate how their requirements have been considered and satisfied with the proposed repository systems. Further efforts need to be undertaken to integrate the requirement management systems, and the processes that they represent, in the day-to-day operations of the organizations. First positive experiences of the latter are reported. (author)

  9. Monitored Retrievable Storage System Requirements Document. Revision 1

    Energy Technology Data Exchange (ETDEWEB)

    1994-03-01

    This Monitored Retrievable Storage System Requirements Document (MRS-SRD) describes the functions to be performed and technical requirements for a Monitored Retrievable Storage (MRS) facility subelement and the On-Site Transfer and Storage (OSTS) subelement. The MRS facility subelement provides for temporary storage, at a Civilian Radioactive Waste Management System (CRWMS) operated site, of spent nuclear fuel (SNF) contained in an NRC-approved Multi-Purpose Canister (MPC) storage mode, or other NRC-approved storage modes. The OSTS subelement provides for transfer and storage, at Purchaser sites, of spent nuclear fuel (SNF) contained in MPCs. Both the MRS facility subelement and the OSTS subelement are in support of the CRWMS. The purpose of the MRS-SRD is to define the top-level requirements for the development of the MRS facility and the OSTS. These requirements include design, operation, and decommissioning requirements to the extent they impact on the physical development of the MRS facility and the OSTS. The document also presents an overall description of the MRS facility and the OSTS, their functions (derived by extending the functional analysis documented by the Physical System Requirements (PSR) Store Waste Document), their segments, and the requirements allocated to the segments. In addition, the top-level interface requirements of the MRS facility and the OSTS are included. As such, the MRS-SRD provides the technical baseline for the MRS Safety Analysis Report (SAR) design and the OSTS Safety Analysis Report design.

  10. Requirements for a Global Greenhouse Gas Information System

    Science.gov (United States)

    Duren, R.; Boland, S.; Lempert, R.; Miller, C.

    2008-12-01

    A global greenhouse gas information system will prove a critical component of any successful effort to mitigate climate change which relies on limiting the atmospheric concentration of greenhouse gases. The system will provide the situational awareness necessary to actively reduce emissions, influence land use change, and sequester carbon. The information from such a system will be subject to intense scrutiny. Therefore, an effective system must openly and transparently produce data of unassailable quality. A global greenhouse gas information system will likely require a combination of space-and air-based remote- sensing assets, ground-based measurements, carbon cycle modeling and self-reporting. The specific requirements on such a system will be shaped by the degree of international cooperation it enjoys and the needs of the policy regime it aims to support, which might range from verifying treaty obligations, to certifying the tradable permits and offsets underlying a market in greenhouse gas emission reductions, to providing a comprehensive inventory of high and low emitters that could be used by non-governmental organizations and other international actors. While some technical studies have examined particular system components in single scenarios, there remains a need for a comprehensive survey of the range of potential requirements, options, and strategies for the overall system. We have initiated such a survey and recently hosted a workshop which engaged a diverse community of stakeholders to begin synthesizing requirements for such a system, with an initial focus on carbon dioxide. In this paper we describe our plan for completing the definition of the requirements, options, and strategies for a global greenhouse gas monitoring system. We discuss our overall approach and provide a status on the initial requirements synthesis activity.

  11. Mined Geologic Disposal System Requirements Document. Revision 1

    Energy Technology Data Exchange (ETDEWEB)

    1994-03-01

    This Mined Geologic Disposal System Requirements Document (MGDS-RD) describes the functions to be performed by, and the requirements for, a Mined Geologic Disposal System (MGDS) for the permanent disposal of spent nuclear fuel (SNF) (including SNF loaded in multi-purpose canisters (MPCs)) and commercial and defense high-level radioactive waste (HLW) in support of the Civilian Radioactive Waste Management System (CRWMS). The purpose of the MGDS-RD is to define the program-level requirements for the design of the Repository, the Exploratory Studies Facility (ESF), and Surface Based Testing Facilities (SBTF). These requirements include design, operation, and decommissioning requirements to the extent they impact on the physical development of the MGDS. The document also presents an overall description of the MGDS, its functions (derived using the functional analysis documented by the Physical System Requirements (PSR) documents as a starting point), its segments as described in Section 3.1.3, and the requirements allocated to the segments. In addition, the program-level interfaces of the MGDS are identified. As such, the MGDS-RD provides the technical baseline for the design of the MGDS.

  12. A Review on Quantitative Approaches for Dock Door Assignment in Cross-Docking

    OpenAIRE

    Adibah Shuib; Wan Nor Ashikin Wan Ahmad Fatthi

    2012-01-01

    Cross docking is a relatively new technique in supply chain operations. It offers limited storage time to maximize the efficiency of goods transshipment. Efficient operation of a cross docking system requires an appropriate coordination of inbound and outbound flows, accurate planning and dynamic scheduling.  The planning strategies at cross docking terminals, which are receiving growing attention today, are the truck-to-door assignment and destination to door assignment problems. This paper ...

  13. Energy requirements and CO2 mitigation potential of PV systems

    NARCIS (Netherlands)

    Alsema, E.A.

    2006-01-01

    In this paper we investigate the energy requirements of PV modules and systems and calculate the Energy Pay-Back Time for two major PV applications. Based on a review of past energy analysis studies we explain the main sources of differences and establish a "best estimate" for key system components.

  14. Requirements control system applied to collider dipole magnet development

    International Nuclear Information System (INIS)

    A number of Myths abound in the area of requirements development. The Requirements Control System (RCS) developed and used by General Dynamics on the CDM contract aims to dispel these myths and ensure comprehensive requirements flowdown to elements of the Collider Dipole Magnet (CDM) and the supporting Analysis, Demonstration, Quality Assurance and Master Test Plans. RCS also provides requirements traceability information by providing the source for each requirement, whether it be from a higher level specification, or from a supporting analysis or trade study. The computer is put to work doing what it does best, keeping track of details and checking for consistency and completeness. The myths that the use of RCS attempts to drive away are: I have to design it first so I can determine what the requirements are; I don't have time to write down the requirements; I'm too busy designing; I know what the requirements are; I don't see why I should write them down; If I have to wait for requirements, I'll never get done; The requirements are changing, so why document them until they are finalized? For the CDM program, the source requirements documents are the SSCL 15 Metre CDM Magnet System Specification and the SSCL CDM Interface Control Document. RCS has been used to generate: CDM Prime Item Development Specification; CDM Prime Item Product Fabrication Specification; Prime Item Product Function Specifications [Cold Mass, Cryostat, and Interconnect Region]; Critical Item Specifications [Beam Tube Assembly, and Superconducting Inner and Outer Cables]. Requirements have been further developed for major subassemblies such as the Cold Mass Support Post and other major items of tooling, test equipment, and transportation equipment. The use of RCS has enabled us to accomplish more work in a shorter time than conventional methods would allow

  15. The Management System for Facilities and Activities. Safety Requirements

    International Nuclear Information System (INIS)

    This publication establishes requirements for management systems that integrate safety, health, security, quality assurance and environmental objectives. A successful management system ensures that nuclear safety matters are not dealt with in isolation but are considered within the context of all these objectives. The aim of this publication is to assist Member States to establish and implement effective management systems that integrate all aspects of managing nuclear facilities and activities in a coherent manner. It details the planned and systematic actions necessary to provide adequate confidence that all these requirements are satisfied

  16. Verifying real-time systems against scenario-based requirements

    OpenAIRE

    Larsen K.G.; Li S; Nielsen B; Pusinskas S.

    2009-01-01

    We propose an approach to automatic verification of real-time systems against scenario-based requirements. A real-time system is modeled as a network of Timed Automata (TA), and a scenario-based requirement is specified as a Live Sequence Chart (LSC). We define a trace-based semantics for a kernel subset of the LSC language. By equivalently translating an LSC chart into an observer TA and then non-intrusively composing this observer with the original system model, the problem of verifying a r...

  17. A Statistical Programme Assignment Model

    DEFF Research Database (Denmark)

    Rosholm, Michael; Staghøj, Jonas; Svarer, Michael

    When treatment effects of active labour market programmes are heterogeneous in an observable way  across the population, the allocation of the unemployed into different programmes becomes a particularly  important issue. In this paper, we present a statistical model designed to improve the present...... duration of unemployment spells may result if a statistical programme assignment model is introduced. We discuss several issues regarding the  plementation of such a system, especially the interplay between the statistical model and  case workers....

  18. Competitive Traffic Assignment in Road Networks

    Directory of Open Access Journals (Sweden)

    Krylatov Alexander Y.

    2016-09-01

    Full Text Available Recently in-vehicle route guidance and information systems are rapidly developing. Such systems are expected to reduce congestion in an urban traffic area. This social benefit is believed to be reached by imposing the route choices on the network users that lead to the system optimum traffic assignment. However, guidance service could be offered by different competitive business companies. Then route choices of different mutually independent groups of users may reject traffic assignment from the system optimum state. In this paper, a game theoretic approach is shown to be very efficient to formalize competitive traffic assignment problem with various groups of users in the form of non-cooperative network game with the Nash equilibrium search. The relationships between the Wardrop’s system optimum associated with the traffic assignment problem and the Nash equilibrium associated with the competitive traffic assignment problem are investigated. Moreover, some related aspects of the Nash equilibrium and the Wardrop’s user equilibrium assignments are also discussed.

  19. National Ignition Facility sub-system design requirements integrated timing system SSDR 1.5.3

    International Nuclear Information System (INIS)

    This System Design Requirement document establishes the performance, design, development, and test requirements for the Integrated Timing System, WBS 1.5.3 which is part of the NIF Integrated Computer Control System (ICCS). The Integrated Timing System provides all temporally-critical hardware triggers to components and equipment in other NIF systems

  20. Federated database management system: Requirements, issues and solutions

    OpenAIRE

    Kamel, Magdi N.; Kamel, Nabil N.

    1992-01-01

    The use of database management systems (DBMS) to replace conventional file processing systems has dramatically increased in the past years. Although the use of DBMSs overcomes many of the limitations of file processing systems, many important applications require access to and integration of information among several and often incompatible DBMSs. In this paper we discuss an approach, known as the federated database approach, that allows users and applications to access...

  1. Defining Nursing Information System Requirements: A Linked Model

    OpenAIRE

    Gassert, Carole A.

    1989-01-01

    There is increasing opportunity for nurses to make decisions about information systems. The purpose of this study was: to develop a model that provides nurses with a guiding framework for deriving nursing information system requirements needed to select, evaluate, enhance or design nursing information systems (NISs); and to test the model's completeness and usefulness. Five model elements were identified from the nursing informatics literature. Structured analysis was then used to identify su...

  2. Modular Attitude Control System for Microsatellites with Stringent Pointing Requirements

    OpenAIRE

    Grocott, Simon

    2000-01-01

    Advancing technology has allowed for the development of low cost attitude control hardware for microsatellites. However, the attitude control design and software development remain a significant cost driver. The Dynacon High Performance Attitude Control system is a modular control system that makes use of reusable algorithm modules enabling the attitude control system to be applied to several different spacecraft missions with very different performance requirements. The High Performance Atti...

  3. National Ignition Facility sub-system design requirements computer system SSDR 1.5.1

    International Nuclear Information System (INIS)

    This System Design Requirement document establishes the performance, design, development and test requirements for the Computer System, WBS 1.5.1 which is part of the NIF Integrated Computer Control System (ICCS). This document responds directly to the requirements detailed in ICCS (WBS 1.5) which is the document directly above

  4. Requirements and generic guidance for a management system

    International Nuclear Information System (INIS)

    The term 'management system' has been adopted instead of 'quality assurance'. 'Management system' reflects the evolution in the approach from the initial concept of 'quality control' (controlling the quality of products) through 'quality assurance' (the system to ensure the quality of products) and 'quality management' (the system to manage quality). The 'management system' is a set of interrelated or interacting elements (system) that establishes policies and objectives and which enables those objectives to be achieved in an efficient and effective way. Nuclear knowledge management is considered a part of an integrated management system, which integrates all the components of an organization into one coherent management system. The paper describes nuclear knowledge management in the context of the IAEA approach to establish the requirements for the integrated management system. The paper also presents nuclear knowledge management terminology and the concept of a 'learning organization' as a means for continuous improvement. (author)

  5. A Study on Performance Requirements for Advanced Alarm System

    International Nuclear Information System (INIS)

    A design goals of advanced alarm system is providing advanced alarm information to operator in main control room. To achive this, we applied computer based system to Alarm System. Because, It should apply data management and advanced alarm processing(ie. Data Base Mangegment System and S/W module for alarm processing). These are not impossible in analog based alarm system. And, preexitance research examples are made on digital computer. We have digital systems for test of advanced alarm system table and have tested and studied using by test equipment in the view point of the system performance, stability and security. In this paper, we discribed about general software architecture of preexitance research examples. Also, CPU performance and requirements of system software that served to accommodate it, stability and security

  6. 28 CFR 524.72 - CIM assignment categories.

    Science.gov (United States)

    2010-07-01

    ... publicity. Inmates who have received widespread publicity as a result of their criminal activity or... require special management attention, but who do not ordinarily warrant assignment in paragraphs...

  7. Quantum probability assignment limited by relativistic causality.

    Science.gov (United States)

    Han, Yeong Deok; Choi, Taeseung

    2016-01-01

    Quantum theory has nonlocal correlations, which bothered Einstein, but found to satisfy relativistic causality. Correlation for a shared quantum state manifests itself, in the standard quantum framework, by joint probability distributions that can be obtained by applying state reduction and probability assignment that is called Born rule. Quantum correlations, which show nonlocality when the shared state has an entanglement, can be changed if we apply different probability assignment rule. As a result, the amount of nonlocality in quantum correlation will be changed. The issue is whether the change of the rule of quantum probability assignment breaks relativistic causality. We have shown that Born rule on quantum measurement is derived by requiring relativistic causality condition. This shows how the relativistic causality limits the upper bound of quantum nonlocality through quantum probability assignment. PMID:26971717

  8. Improve the Method for Requirements Analysis on Commercial Information System

    OpenAIRE

    Peng, Chen

    2005-01-01

    This thesis states the tasks of the analyst: communicating with commercial customer to establish their requirements; reframing those requirements by negotiation in order that programmers can understand it to write the codes efficiently. Soft System Methodology (SSM) is an effective approach to identify the situation of the problem. In my thesis, I will improve a new business – oriented method that is called Process Improvement for Strategic Objectives (PISO) with SSM to make PISO have more ef...

  9. Space Transportation System Availability Requirements and Its Influencing Attributes Relationships

    Science.gov (United States)

    Rhodes, Russel E.; Adams, TImothy C.

    2008-01-01

    It is essential that management and engineering understand the need for an availability requirement for the customer's space transportation system as it enables the meeting of his needs, goal, and objectives. There are three types of availability, e.g., operational availability, achieved availability, or inherent availability. The basic definition of availability is equal to the mean uptime divided by the sum of the mean uptime plus the mean downtime. The major difference is the inclusiveness of the functions within the mean downtime and the mean uptime. This paper will address tIe inherent availability which only addresses the mean downtime as that mean time to repair or the time to determine the failed article, remove it, install a replacement article and verify the functionality of the repaired system. The definitions of operational availability include the replacement hardware supply or maintenance delays and other non-design factors in the mean downtime. Also with inherent availability the mean uptime will only consider the mean time between failures (other availability definitions consider this as mean time between maintenance - preventive and corrective maintenance) that requires the repair of the system to be functional. It is also essential that management and engineering understand all influencing attributes relationships to each other and to the resultant inherent availability requirement. This visibility will provide the decision makers with the understanding necessary to place constraints on the design definition for the major drivers that will determine the inherent availability, safety, reliability, maintainability, and the life cycle cost of the fielded system provided the customer. This inherent availability requirement may be driven by the need to use a multiple launch approach to placing humans on the moon or the desire to control the number of spare parts required to support long stays in either orbit or on the surface of the moon or mars. It is

  10. Regulatory requirements for replacement of analog systems with digital upgrades

    International Nuclear Information System (INIS)

    This paper reviews briefly the regulatory guidelines which must be met in order to replace analog systems in nuclear power plants with digital systems. There is a move to do such replacements for a number of reasons: analog systems are aging, and showing considerable drift; few vendors manufacture analog systems today; support and parts are hard to get; digital systems provide flexibility. There is a safety concern however about undesirable and unpredictable effects to digital safety equipment due to plant transients, accidents, post-accident condition, and EMI/RF environmental interferences. License holders must comply with the requirements of 10 C.F.R. 50.59, which deals with safety concerns with respect to any changes to operating plants which may have an impact on the safety of the plant. NRC staff is taking the position that all digital upgrades will require an evaluation under this regulation

  11. WFIRST Science Requirements Flowdown and Integrated System Modeling

    Science.gov (United States)

    Seiffert, Michael D.

    2012-05-01

    The Wide Field Infrared Survey Telescope (WFIRST) comprises hardware that will perform imaging and spectroscopic near-infrared sky surveys. The surveys will be applicable to a wide range of astrophysical problems; the most challenging performance requirements come from the dark energy and exoplanet observing programs. I will describe the connection between WFIRST scientific requirements and the resulting requirements on the system hardware. In the course of the definition phase, the WFIRST hardware has been the subject of an extensive design and integrated modeling effort. I will describe the integrated modeling effort as an illustration of the design considerations and tradeoffs necessary to reach the ambitious science survey goals.

  12. Reliability requirements management for ITER Remote Handling maintenance systems

    Energy Technology Data Exchange (ETDEWEB)

    Väyrynen, J., E-mail: jukka.vayrynen@tut.fi [Department of Intelligent Hydraulics and Automation, Tampere University of Technology, Tampere (Finland); Mattila, J. [Department of Intelligent Hydraulics and Automation, Tampere University of Technology, Tampere (Finland)

    2013-10-15

    Highlights: ► A model for reliability requirements management is presented. ► A proof of concept reliability allocation is made for a manipulator. ► System reliability and maintenance assessment is done based on the previous allocations. -- Abstract: This paper presents a model that can be used to ease reliability requirements management and designing reliability into the ITER remote maintenance equipment from the get-go, parallel to the mechanical design of the system. In addition, following the model presented automatically creates a reliability verification method during the physical design process with no or little additional cost and work involved.

  13. Reliability requirements management for ITER Remote Handling maintenance systems

    International Nuclear Information System (INIS)

    Highlights: ► A model for reliability requirements management is presented. ► A proof of concept reliability allocation is made for a manipulator. ► System reliability and maintenance assessment is done based on the previous allocations. -- Abstract: This paper presents a model that can be used to ease reliability requirements management and designing reliability into the ITER remote maintenance equipment from the get-go, parallel to the mechanical design of the system. In addition, following the model presented automatically creates a reliability verification method during the physical design process with no or little additional cost and work involved

  14. Software requirements definition Shipping Cask Analysis System (SCANS)

    International Nuclear Information System (INIS)

    The US Nuclear Regulatory Commission (NRC) staff reviews the technical adequacy of applications for certification of designs of shipping casks for spent nuclear fuel. In order to confirm an acceptable design, the NRC staff may perform independent calculations. The current NRC procedure for confirming cask design analyses is laborious and tedious. Most of the work is currently done by hand or through the use of a remote computer network. The time required to certify a cask can be long. The review process may vary somewhat with the engineer doing the reviewing. Similarly, the documentation on the results of the review can also vary with the reviewer. To increase the efficiency of this certification process, LLNL was requested to design and write an integrated set of user-oriented, interactive computer programs for a personal microcomputer. The system is known as the NRC Shipping Cask Analysis System (SCANS). The computer codes and the software system supporting these codes are being developed and maintained for the NRC by LLNL. The objective of this system is generally to lessen the time and effort needed to review an application. Additionally, an objective of the system is to assure standardized methods and documentation of the confirmatory analyses used in the review of these cask designs. A software system should be designed based on NRC-defined requirements contained in a requirements document. The requirements document is a statement of a project's wants and needs as the users and implementers jointly understand them. The requirements document states the desired end products (i.e. WHAT's) of the project, not HOW the project provides them. This document describes the wants and needs for the SCANS system. 1 fig., 3 tabs

  15. Environmental Restoration Program quality system requirements for the Hanford Site

    International Nuclear Information System (INIS)

    This document defines the quality system requirements for the US Department of Energy, Richland Operations Office, Environmental Restoration Program at the Hanford Site. The Quality System Requirements (OSR) for the Hanford Site integrates quality assurance requirements from the US Department of Energy Orders, the Hanford Federal Facility Agreement and Consent Order (Tri-Party Agreement), and applicable industry standards into a single source document for the development of quality systems applicable to the Environmental Restoration Program activities. This document, based on fifteen criteria and divided intro three parts, provides user organizations with the flexibility to incorporate only those criteria and parts applicable to their specific scopes of work. The requirements of this document shall be applied to activities that affect quality based on a graded approach that takes into consideration the risk inherent in, as well as the importance of, specific items, services, and activities in terms of meeting ER Program objectives and customer expectations. The individual quality systems developed in accordance with this document are intended to provide an integrated management control system that assures the conduct of ER Program activities in a manner that protects human health and the environment

  16. Spectrum Requirement Estimation for IMT Systems in Developing Countries

    Directory of Open Access Journals (Sweden)

    Md Sohel Rana

    2014-06-01

    Full Text Available In this paper we analyze the methodology developed by the International Telecommunication Union (ITU for estimating the spectrum requirement for International Mobile Telecommunications (IMT systems. The International Telecommunication Union estimates spectrum requirements by following ITU-R-Rec.M1768. Although this methodology is adopted by ITU-R, there are discrepancies for Estimating the spectrum requirement for developing countries. ITU estimates the spectrum requirement by considering technical and market parameters that were provided by the most de veloped countries with high income and high development index. Developed countries have a very rapid expansible telecom market due to the high level of penetration, dominant user density and usage of high-volume multimedia services.In contrast, developing countries use less bandwidth -intensive services such as voice communication, low rate data, low and medium multimedia. However, while the input parameters are adequate for developed countries, they do not reflect the status of developing countries. For this reason the ITU spectrum estimation overestimates the exact requirements of spectrum for IMT systems for developing countries. This paper presents an approach based on the technical and market related parameters, which is thought to be applicable For overcoming the hortcomings of the current ITU methodology in estimating the spectrum requirement for developing countries like Bangladesh

  17. Requirements of a Web-based experiment management system.

    OpenAIRE

    Jakobovits, R.; Soderland, S. G.; Taira, R. K.; Brinkley, J.F.

    2000-01-01

    Recent advances in tools for scientific data acquisition, visualization, and analysis have lead to growing information management problems for medical research laboratories. An exponential increase in the volume of data, combined with a proliferation of heterogeneous formats and autonomous systems, has driven the need for flexible and powerful Experiment Management Systems (EMS). This paper provides a detailed analysis of the informatics requirements of an EMS, and proposes a new type of midd...

  18. Risk-Based Confidentiality Requirements Specification for Outsourced IT Systems

    OpenAIRE

    Morali, Ayse; Wieringa, Roel

    2010-01-01

    Today, companies are required to be in control of their IT assets, and to provide proof of this in the form of independent IT audit reports. However, many companies have outsourced various parts of their IT systems to other companies, which potentially threatens the control they have of their IT assets. To provide proof of being in control of outsourced IT systems, the outsourcing client and outsourcing provider need a written service level agreement (SLA) that can be audited by an independen...

  19. ISO9001 Quality Management Systems; Benefits and Requirements

    OpenAIRE

    Viro, Antti

    2015-01-01

    Oulu University of Applied Sciences Industrial Management Author(s): Antti Viro Title of thesis: ISO9001 Quality Management Systems; Benefits and Requirements Supervisor(s): Hannu Päätalo Spring 2015: Pages: 61 + 1 appendices The purpose of this thesis was to find reasons and justifications for the ISO9001 certified quality management system. The major part of the case work was establishing QMS for Dedicated Networks Partners Oy. The other parts were literature and t...

  20. 48 CFR 227.7009 - Patent releases, license agreements, and assignments.

    Science.gov (United States)

    2010-10-01

    ... 48 Federal Acquisition Regulations System 3 2010-10-01 2010-10-01 false Patent releases, license... ACQUISITION REGULATIONS SYSTEM, DEPARTMENT OF DEFENSE GENERAL CONTRACTING REQUIREMENTS PATENTS, DATA, AND COPYRIGHTS Infringement Claims, Licenses, and Assignments 227.7009 Patent releases, license agreements,...

  1. Diversity and testing requirements of programmable automation systems

    International Nuclear Information System (INIS)

    In the report programmable digital operation and safety automation systems for nuclear power plants are discussed. The programmable systems deviate by their properties and behaviour from the conventional non-programmable systems in such extent, that their verification and validation for safety critical applications requires new methods and practices. The safety assessment can not be based on conventional probabilistic methods due to the difficulties in the quantification of the reliability of the software and hardware. A safety critical programmable system shall include diverse redundant parts so that no residual program fault can not cause the failure of the intended function of the system. Although complete testing of a programmable system is impossible, different tests have a central role in the production and validation process of the system. Diversity is important also in confidence building measures for the implemented system. Independent analysis and testing of the system should use different methods and tools from those used in the production and validation process by the system vendor. Use of diversity and testing are concluded to be central issues in producing safe programmable system and in proving them to be safe enough. By combining functional and programming diversity in a suitable way one can produce a system that is safe enough without having a non-programmable back-up system. (48 refs., 10 figs., 2 tabs.)

  2. Emerging Requirements Of Reconfigurable Computing Systems For Performance Enhancement

    Directory of Open Access Journals (Sweden)

    M. Aqeel Iqbal

    2010-08-01

    Full Text Available The reconfigurable computing is intended to fill the gap between the non-flexible but high speed application specific integrated circuits based technology and the mostflexible but slow speed general purpose processor based technology. The main idea behind the reconfigurablecomputing technology is to tightly glue the performance and flexibility aspects of the both existing technologies into onegrain. This kind of tight coupling of both computing technologies on a single silicon chip requires new technological advancement in area of software engineering, computer science and computer engineering. This research paper is intended to present a comprehensive survey about the existing reconfigurable computing systems and theirsoftware and hardware level requirements for further enhancement of the existing technology barrier. Many new aspects of existing systems are required to be boosted up at the software and hardware level of such kind of advanced computing platforms to support the next generation computing demands.

  3. Fusing Quantitative Requirements Analysis with Model-based Systems Engineering

    Science.gov (United States)

    Cornford, Steven L.; Feather, Martin S.; Heron, Vance A.; Jenkins, J. Steven

    2006-01-01

    A vision is presented for fusing quantitative requirements analysis with model-based systems engineering. This vision draws upon and combines emergent themes in the engineering milieu. "Requirements engineering" provides means to explicitly represent requirements (both functional and non-functional) as constraints and preferences on acceptable solutions, and emphasizes early-lifecycle review, analysis and verification of design and development plans. "Design by shopping" emphasizes revealing the space of options available from which to choose (without presuming that all selection criteria have previously been elicited), and provides means to make understandable the range of choices and their ramifications. "Model-based engineering" emphasizes the goal of utilizing a formal representation of all aspects of system design, from development through operations, and provides powerful tool suites that support the practical application of these principles. A first step prototype towards this vision is described, embodying the key capabilities. Illustrations, implications, further challenges and opportunities are outlined.

  4. Protein side-chain resonance assignment and NOE assignment using RDC-defined backbones without TOCSY data

    Energy Technology Data Exchange (ETDEWEB)

    Zeng Jianyang [Duke University, Department of Computer Science (United States); Zhou Pei [Duke University Medical Center, Department of Biochemistry (United States); Donald, Bruce Randall [Duke University, Department of Computer Science (United States)

    2011-08-15

    One bottleneck in NMR structure determination lies in the laborious and time-consuming process of side-chain resonance and NOE assignments. Compared to the well-studied backbone resonance assignment problem, automated side-chain resonance and NOE assignments are relatively less explored. Most NOE assignment algorithms require nearly complete side-chain resonance assignments from a series of through-bond experiments such as HCCH-TOCSY or HCCCONH. Unfortunately, these TOCSY experiments perform poorly on large proteins. To overcome this deficiency, we present a novel algorithm, called Nasca (NOE Assignment and Side-Chain Assignment), to automate both side-chain resonance and NOE assignments and to perform high-resolution protein structure determination in the absence of any explicit through-bond experiment to facilitate side-chain resonance assignment, such as HCCH-TOCSY. After casting the assignment problem into a Markov Random Field (MRF), Nasca extends and applies combinatorial protein design algorithms to compute optimal assignments that best interpret the NMR data. The MRF captures the contact map information of the protein derived from NOESY spectra, exploits the backbone structural information determined by RDCs, and considers all possible side-chain rotamers. The complexity of the combinatorial search is reduced by using a dead-end elimination (DEE) algorithm, which prunes side-chain resonance assignments that are provably not part of the optimal solution. Then an A* search algorithm is employed to find a set of optimal side-chain resonance assignments that best fit the NMR data. These side-chain resonance assignments are then used to resolve the NOE assignment ambiguity and compute high-resolution protein structures. Tests on five proteins show that Nasca assigns resonances for more than 90% of side-chain protons, and achieves about 80% correct assignments. The final structures computed using the NOE distance restraints assigned by Nasca have backbone RMSD 0

  5. Research Perspectives for Material Requirements Planning Systems. Paper No. 434.

    Science.gov (United States)

    Berry, W. L.; Whybark, D. Clay

    Material requirements planning (MRP) systems are described as management tools for planning and controlling production operations. A wide variety of industries and production organizations are credited as reporting significant operating improvements in such areas as inventory control, production scheduling, delivery performance, and production…

  6. Data concentrator requirements for a safety parameter display system

    International Nuclear Information System (INIS)

    To comply with NUREG 0696 several nuclear plants are being fitted with new facilities and data systems; specifically a Technical Support Center (TSC), Operational Support Center (OSC), Emergency Operational Facility (EOF), and Backup Safety Parameter Display System (SPDS), Emergency Response Computer System (ERCS) and Nuclear Data Link (NDL). The TSC, OSC, and EOF are physical locations while the SPDS, ERCS, and NDL are Systems. The SPDS and ERCS are usually separate and independent systems, however, they may share a common front end data acquisition system that acquires and sends SPDS related data to both the SPDS and to the ERCS. In the situation just described an SPDS system must depend upon input data from a source that is SPDS host computer independent. To achieve this independence the front end data acquisition system may employ a concept of intelligent distributed processing. This concept essentially takes functional capabilities that were once found only in realtime host computers and distributes it to front end data acquisition systems. Thus by expanding the functionality of the data acquisition system in a manner that provides more capability, independence from the computer vendor, links to multiple computer systems, processing power and redundancy, the concept of a data concentrator evolved. This paper will define this new distributed functionality, and its related requirements. It will also examine different system configuration approaches

  7. Design Requirements of an Advanced HANARO Reactor Core Cooling System

    International Nuclear Information System (INIS)

    An advanced HANARO Reactor (AHR) is an open-tank-type and generates thermal power of 20 MW and is under conceptual design phase for developing it. The thermal power is including a core fission heat, a temporary stored fuel heat in the pool, a pump heat and a neutron reflecting heat in the reflector vessel of the reactor. In order to remove the heat load, the reactor core cooling system is composed of a primary cooling system, a primary cooling water purification system and a reflector cooling system. The primary cooling system must remove the heat load including the core fission heat, the temporary stored fuel heat in the pool and the pump heat. The purification system must maintain the quality of the primary cooling water. And the reflector cooling system must remove the neutron reflecting heat in the reflector vessel of the reactor and maintain the quality of the reflector. In this study, the design requirement of each system has been carried out using a design methodology of the HANARO within a permissible range of safety. And those requirements are written by english intend to use design data for exporting the research reactor

  8. A Type System for Required/Excluded Elements in CLS

    Directory of Open Access Journals (Sweden)

    Mariangiola Dezani-Ciancaglini

    2009-11-01

    Full Text Available The calculus of looping sequences is a formalism for describing the evolution of biological systems by means of term rewriting rules. We enrich this calculus with a type discipline to guarantee the soundness of reduction rules with respect to some biological properties deriving from the requirement of certain elements, and the repellency of others. As an example, we model a toy system where the repellency of a certain element is captured by our type system and forbids another element to exit a compartment.

  9. Interface requirements in nuclear medicine devices and systems

    International Nuclear Information System (INIS)

    Interface designs for three nuclear medicine imaging systems, and computer networking strategies proposed for medical imaging departments are presented. Configurations for two positron-emission-tomography devices (PET III and ECAT) and a general-purpose tomography instrument (the UNICON) are analyzed in terms of specific performance parameters. Interface designs for these machines are contrasted in terms of utilization of standard versus custom modules, cost, and ease of modification, upgrade, and support. The requirements of general purpose systems for medical image analysis, display, and archiving, are considered, and a realizable state-of-the-art system is specfied, including a suggested timetable

  10. A SUSTAINABLE HEALTH CARE SYSTEM REQUIRES MANAGEMENT TRANSFORMATION

    Directory of Open Access Journals (Sweden)

    Kanellopoulos Dimitros

    2011-12-01

    Full Text Available In order to be the health care system sustainable , management transformations must be based on very precise diagnostic analysis that includes complete and current information. It is necessary to implement an information system that collects information in real time, that watches the parameters that significantly influence the sustainability of the system. Such an information system should point out a radiography(a scan of the system at some time under following aspects:: 1. An overview of system; 2 An overview of the economic situation; 3 A technical presentation ;4. A legal overview; 5. A social overview ; 6. A management overview .Based on these Xrays of the health system, it outlines a series of conclusions and recommendations together with a SWOT analysis that highlights the potential internal (strengths and weaknesses and external potential (opportunities and threats. Based on this analysis and recommendations, the management is going to redesign the system in order to be adapted to the changing environmental requirements. Management transformation is recommended to be by following steps. :1. The development of a new management system that would make a positive change in the health care system 2. Implementation of the new management system 3. Assessment of the changes

  11. Unifying Temporal and Structural Credit Assignment Problems

    Science.gov (United States)

    Agogino, Adrian K.; Tumer, Kagan

    2004-01-01

    Single-agent reinforcement learners in time-extended domains and multi-agent systems share a common dilemma known as the credit assignment problem. Multi-agent systems have the structural credit assignment problem of determining the contributions of a particular agent to a common task. Instead, time-extended single-agent systems have the temporal credit assignment problem of determining the contribution of a particular action to the quality of the full sequence of actions. Traditionally these two problems are considered different and are handled in separate ways. In this article we show how these two forms of the credit assignment problem are equivalent. In this unified frame-work, a single-agent Markov decision process can be broken down into a single-time-step multi-agent process. Furthermore we show that Monte-Carlo estimation or Q-learning (depending on whether the values of resulting actions in the episode are known at the time of learning) are equivalent to different agent utility functions in a multi-agent system. This equivalence shows how an often neglected issue in multi-agent systems is equivalent to a well-known deficiency in multi-time-step learning and lays the basis for solving time-extended multi-agent problems, where both credit assignment problems are present.

  12. Safety integrity requirements for computer based I ampersand C systems

    International Nuclear Information System (INIS)

    In order to take into account increasingly demanding functional requirements, many instrumentation and control (I ampersand C) systems in nuclear power plants are implemented with computers. In order to ensure the required safety integrity of such equipment, i.e., to ensure that they satisfactorily perform the required safety functions under all stated conditions and within stated periods of time, requirements applicable to these equipment and to their life cycle need to be expressed and followed. On the other hand, the experience of the last years has led EDF (Electricite de France) and its partners to consider three classes of systems and equipment, according to their importance to safety. In the EPR project (European Pressurized water Reactor), these classes are labeled E1A, E1B and E2. The objective of this paper is to present the outline of the work currently done in the framework of the ETC-I (EPR Technical Code for I ampersand C) regarding safety integrity requirements applicable to each of the three classes. 4 refs., 2 figs

  13. Effects of Numerical Requirement System on Students' Learning Strategies

    Directory of Open Access Journals (Sweden)

    Fani Tuti Handayani

    2015-08-01

    Full Text Available Research on the impacts of the ‘requirement system’ on student learning is still rare, however the system is still widely applied by Dental Schools in many countries. The major consequent of this system is the unpreparedness of students’ learning prior to presenting patients with particular complaints. Objective: This study aimed to explore the effect of the ‘requirement system’ on students’ learning strategy in Dental Education University of Jenderal Soedirman. Methods: This was a qualitative-phenomenography study. The collection of data was through observations and interviews. The number of subjects was 13 students of the same batch in a clinical education level. Observations by 2 clinical teachers were done in advance and lasted for six weeks, followed by in-depth interviews. Results: Interviews revealed that application of the ‘requirement system’ had prompted the students to get the patients and to learn or not learn correspondingly to the specified cases. Observations revealed that preparation for learning did not consequently lead to students’ performance in doing clinical work. Conclusion: ‘Requirement system’ driven students’ preparation for learning. However, number of cases did not. Modifying the ‘requirement system’ and improving the quality of clinical supervision are two important things suggested by this study.DOI: 10.14693/jdi.v22i2.260

  14. The requirements to reliability of water supply systems in Vietnam

    Directory of Open Access Journals (Sweden)

    Deryushev Leonid Georgiyevich

    Full Text Available The recommendations for the development of additional regulatory requirements to reliability of water supply systems in Vietnam are offered. In current construction rules for design, the reliability of water supply systems of water facilities is not standardized. Water systems are classified into three categories, for which the conditions for performing functions in the process of water supply for consumers are formulated. It is not provided to assess the quality of these functions quantitatively. Adoption of design decisions without quantitative assessment of their quality is violating a systematic approach in carrying out construction and design works, which has formed in the global practice. As a result of the research of water supply facilities’ reliability in Vietnam and Russia, the reliability of the existing water supply facilities has been estimated. On the basis of mathematical methods for assessing the reliability of technical objects, the methods for assessing the reliability of water supply facilities and their systems has been justified and systematized. If there is lack of reliability and security requirements to the object of capital construction for design documentation development or such requirements are not established, the development and approval in the prescribed manner of special specifications should precede the documentation development. It is proposed to systematize the statistical data gathering on the reliability of the equipment and facilities of water supply systems by uniform rules. Any designed objects of water supply must have a quantitative estimate of the level of reliability. The outlined methods for assessing the reliability of water supply facilities and systems can be used in the formation of regulatory requirements for reliability in the design of water supply facilities in Vietnam.

  15. Models of Human Information Requirements: "When Reasonable Aiding Systems Disagree"

    Science.gov (United States)

    Corker, Kevin; Pisanich, Gregory; Shafto, Michael (Technical Monitor)

    1994-01-01

    Aircraft flight management and Air Traffic Control (ATC) automation are under development to maximize the economy of flight and to increase the capacity of the terminal area airspace while maintaining levels of flight safety equal to or better than current system performance. These goals are being realized by the introduction of flight management automation aiding and operations support systems on the flight deck and by new developments of ATC aiding systems that seek to optimize scheduling of aircraft while potentially reducing required separation and accounting for weather and wake vortex turbulence. Aiding systems on both the flight deck and the ground operate through algorithmic functions on models of the aircraft and of the airspace. These models may differ from each other as a result of variations in their models of the immediate environment. The resultant flight operations or ATC commands may differ in their response requirements (e.g. different preferred descent speeds or descent initiation points). The human operators in the system must then interact with the automation to reconcile differences and resolve conflicts. We have developed a model of human performance including cognitive functions (decision-making, rule-based reasoning, procedural interruption recovery and forgetting) that supports analysis of the information requirements for resolution of flight aiding and ATC conflicts. The model represents multiple individuals in the flight crew and in ATC. The model is supported in simulation on a Silicon Graphics' workstation using Allegro Lisp. Design guidelines for aviation automation aiding systems have been developed using the model's specification of information and team procedural requirements. Empirical data on flight deck operations from full-mission flight simulation are provided to support the model's predictions. The paper describes the model, its development and implementation, the simulation test of the model predictions, and the empirical

  16. Research of Automatic Assignment Topics Indexing Using Chinese Scientific and Technical Vocabulary Systems%汉语科技词系统在文献自动赋词标引中的应用研究

    Institute of Scientific and Technical Information of China (English)

    闫莹莹; 许德山; 张运良; 李鹏

    2013-01-01

    文章首先介绍了汉语科技词系统的体系结构和功能,其次设计了自动赋词标引研究的整体思路,完成了自动赋词标引的系统功能实现,包括标引知识库的格式转换、算法实现和系统实现,并收集语料进行测试。最后对自动赋词标引的结果进行了分析,并且总结了该自动赋词标引研究的特点和不足,介绍了未来的工作设想。%The author introduced the system structure and function of Chinese science and technology system firstly, then designed the whole idea of automatic assignment topics indexing, completed the function of automatic assignment topics indexing system, including knowledge base format conversion, algorithm and system implementation, and col ected data to test the result. Final y, author analyzed the result of the automatic assignment topics indexing, summarized the characteristics and the insufficiency of automatic assignment topic indexing, and introduced the future work.

  17. Plasma driving system requirements for commercial tokamak fusion reactors

    International Nuclear Information System (INIS)

    The plasma driving system for a tokamak reactor is composed of an ohmic heating (OH) coil, equilibrium field (EF) coil, and their respective power supplies. Conceptual designs of an Experimental Power Reactor (EPR) and scoping studies of a Demonstration Power Reactor have shown that the driving system constitutes a significant part of the overall reactor cost. The capabilities of the driving system also set or help set important parameters of the burn cycle, such as the startup time, and the net power output. Previous detailed studies on driving system dynamics have helped to define the required characteristics for fast-pulsed superconducting magnets, homopolar generators, and very high power (GVA) power supplies for an EPR. This paper summarizes results for a single reactor configuration together with several design concepts for the driving system. Both the reactor configuration and the driving system concepts are natural extensions from the EPR. Thus, the new results presented in this paper can be compared with the previous EPR results to obtain a consistent picture of how the driving system requirements will evolve--for one particular design configuration

  18. Plasma driving system requirements for commercial tokamak fusion reactors

    International Nuclear Information System (INIS)

    The plasma driving system for a tokamak reactor is composed of an ohmic heating (OH) coil, equilibrium field (EF) coil, and their respective power supplies. Conceptual designs of an Experimental Power Reactor (EPR) and scoping studies of a Demonstration Power Reactor have shown that the driving system constitutes a significant part of the overall reactor cost. The capabilities of the driving system also set or help set important parameters of the burn cycle, such as the startup time, and the net power output. Previous detailed studies on driving system dynamics have helped to define the required characteristics for fast-pulsed superconducting magnets, homopolar generators, and very high power (GVA) power supplies for an EPR. This paper summarizes results for a single reactor configuration together with several design concepts for the driving system. Both the reactor configuration and the driving system concepts are natural extensions from the EPR. Thus, the new results can be compared with the previous EPR results to obtain a consistent picture of how the driving system requirements will evolve--for one particular design configuration

  19. Requirements to a Norwegian National Automatic Gamma Monitoring System

    Energy Technology Data Exchange (ETDEWEB)

    Lauritzen, B.; Hedemann Jensen, P.; Nielsen, F

    2005-04-01

    An assessment of the overall requirements to a Norwegian gamma-monitoring network is undertaken with special emphasis on the geographical distribution of automatic gamma monitoring stations, type of detectors in such stations and the sensitivity of the system in terms of ambient dose equivalent rate increments above the natural background levels. The study is based upon simplified deterministic calculations of the radiological consequences of generic nuclear accident scenarios. The density of gamma monitoring stations has been estimated from an analysis of the dispersion of radioactive materials over large distances using historical weather data; the minimum density is estimated from the requirement that a radioactive plume may not slip unnoticed in between stations of the monitoring network. The sensitivity of the gamma monitoring system is obtained from the condition that events that may require protective intervention measures should be detected by the system. Action levels for possible introduction of sheltering and precautionary foodstuff restrictions are derived in terms of ambient dose equivalent rate. For emergency situations where particulates contribute with only a small fraction of the total ambient dose equivalent rate from the plume, it is concluded that measurements of dose rate are sufficient to determine the need for sheltering; simple dose rate measurements however, are inadequate to determine the need for foodstuff restrictions and spectral measurements are required. (au)

  20. Requirements to a Norwegian National Automatic Gamma Monitoring System

    International Nuclear Information System (INIS)

    An assessment of the overall requirements to a Norwegian gamma-monitoring network is undertaken with special emphasis on the geographical distribution of automatic gamma monitoring stations, type of detectors in such stations and the sensitivity of the system in terms of ambient dose equivalent rate increments above the natural background levels. The study is based upon simplified deterministic calculations of the radiological consequences of generic nuclear accident scenarios. The density of gamma monitoring stations has been estimated from an analysis of the dispersion of radioactive materials over large distances using historical weather data; the minimum density is estimated from the requirement that a radioactive plume may not slip unnoticed in between stations of the monitoring network. The sensitivity of the gamma monitoring system is obtained from the condition that events that may require protective intervention measures should be detected by the system. Action levels for possible introduction of sheltering and precautionary foodstuff restrictions are derived in terms of ambient dose equivalent rate. For emergency situations where particulates contribute with only a small fraction of the total ambient dose equivalent rate from the plume, it is concluded that measurements of dose rate are sufficient to determine the need for sheltering; simple dose rate measurements however, are inadequate to determine the need for foodstuff restrictions and spectral measurements are required. (au)

  1. Safety design requirements for safety systems and components of JSFR

    International Nuclear Information System (INIS)

    As a part of the conceptual design for Japan sodium-cooled fast reactor (JSFR), safety design requirements of JSFR is now being established in collaboration with JAEA, JAPC and MFBR. The basic safety approach is based on the development targets of a fast reactor cycle technology development (FaCT) project, i.e., the deterministic design approach based on the defense-in-depth philosophy, in which prevention and mitigation against BDBEs are considered as well as against DBEs, is supported by the probabilistic evaluations. In order to embody a safety design, a higher level safety principle was broken down into a set of design requirements for each safety related system, structure and component (SSC). This paper will present an output of the safety requirements for safety related SSCs of JSFR. In the course of this study, related safety principle and requirements for Monju, CRBRP, PRISM, SPX, LWRs, IAEA standards, development targets of FaCT project, goals of GIF and basic principle of INPRO etc. were taken into account to develop a next-generation global-standard safety requirements. It is stressed that preventive and mitigative measures against BDBEs shall be considered from early design stage. The attached figure shows outline of the safety requirements. The systems and components to be studied are divided: (1)core and fuel, (2) reactor vessel and its internal structures, (3) primary coolant system, (4) intermediate coolant system, (5) decay heat removal system, (6) reactor shutdown and reactivity control systems, (7)safety protection system, instrumentation and control systems, (8) electric power system, (9) fuel handling system, (10) steam and power conversion systems, (11) containment system and reactor building, (12) auxiliary systems. These requirements can also be categorized into some levels. Although the lower level expresses design requirements specific for JSFR, the higher level can be commonly applied to sodium cooled fast reactors. This paper will

  2. Nuclear Thermal Propulsion Mars Mission Systems Analysis and Requirements Definition

    Science.gov (United States)

    Mulqueen, Jack; Chiroux, Robert C.; Thomas, Dan; Crane, Tracie

    2007-01-01

    This paper describes the Mars transportation vehicle design concepts developed by the Marshall Space Flight Center (MSFC) Advanced Concepts Office. These vehicle design concepts provide an indication of the most demanding and least demanding potential requirements for nuclear thermal propulsion systems for human Mars exploration missions from years 2025 to 2035. Vehicle concept options vary from large "all-up" vehicle configurations that would transport all of the elements for a Mars mission on one vehicle. to "split" mission vehicle configurations that would consist of separate smaller vehicles that would transport cargo elements and human crew elements to Mars separately. Parametric trades and sensitivity studies show NTP stage and engine design options that provide the best balanced set of metrics based on safety, reliability, performance, cost and mission objectives. Trade studies include the sensitivity of vehicle performance to nuclear engine characteristics such as thrust, specific impulse and nuclear reactor type. Tbe associated system requirements are aligned with the NASA Exploration Systems Mission Directorate (ESMD) Reference Mars mission as described in the Explorations Systems Architecture Study (ESAS) report. The focused trade studies include a detailed analysis of nuclear engine radiation shield requirements for human missions and analysis of nuclear thermal engine design options for the ESAS reference mission.

  3. NGSI: Function Requirements for a Cylinder Tracking System

    International Nuclear Information System (INIS)

    While nuclear suppliers currently track uranium hexafluoride (UF6) cylinders in various ways, for their own purposes, industry practices vary significantly. The NNSA Office of Nonproliferation and International Security's Next Generation Safeguards Initiative (NGSI) has begun a 5-year program to investigate the concept of a global monitoring scheme that uniquely identifies and tracks UF6 cylinders. As part of this effort, NGSI's multi-laboratory team has documented the 'life of a UF6 cylinder' and reviewed IAEA practices related to UF6 cylinders. Based on this foundation, this paper examines the functional requirements of a system that would uniquely identify and track UF6 cylinders. There are many considerations for establishing a potential tracking system. Some of these factors include the environmental conditions a cylinder may be expected to be exposed to, where cylinders may be particularly vulnerable to diversion, how such a system may be integrated into the existing flow of commerce, how proprietary data generated in the process may be protected, what a system may require in terms of the existing standard for UF6 cylinder manufacture or modifications to it and what the limiting technology factors may be. It is desirable that a tracking system should provide benefit to industry while imposing as few additional constraints as possible and still meeting IAEA safeguards objectives. This paper includes recommendations for this system and the analysis that generated them.

  4. HLLV avionics requirements study and electronic filing system database development

    Science.gov (United States)

    1994-01-01

    This final report provides a summary of achievements and activities performed under Contract NAS8-39215. The contract's objective was to explore a new way of delivering, storing, accessing, and archiving study products and information and to define top level system requirements for Heavy Lift Launch Vehicle (HLLV) avionics that incorporate Vehicle Health Management (VHM). This report includes technical objectives, methods, assumptions, recommendations, sample data, and issues as specified by DPD No. 772, DR-3. The report is organized into two major subsections, one specific to each of the two tasks defined in the Statement of Work: the Index Database Task and the HLLV Avionics Requirements Task. The Index Database Task resulted in the selection and modification of a commercial database software tool to contain the data developed during the HLLV Avionics Requirements Task. All summary information is addressed within each task's section.

  5. SWEPP assay system version 2.0 software requirements specification

    International Nuclear Information System (INIS)

    The INEL Stored Waste Examination Pilot Plant (SWEPP) operations staff use nondestructive analysis methods to characterize the radiological contents of contact-handled radioactive waste containers. Containers of waste from Rocky Flats Environmental Technology Site and other DOE sites are currently stored at SWEPP. Before these containers can be shipped to WIPP, SWEPP must verify compliance with storage, shipping, and disposal requirements. One part of the SWEPP program measures neutron emissions from the containers and estimates the mass of Pu and other transuranic isotopes present. The code NEUT2 was originally used to perform data acquisition and reduction; the SWEPP Assay System (SAS) code replaced NEUT2 in early 1994. This document specifies the requirements for the SAS software as installed at INEL and was written to comply with RWMC (INEL Radioactive Waste Management Complex) quality requirements

  6. Information technology - Security techniques - Information security management systems - Requirements

    CERN Document Server

    International Organization for Standardization. Geneva

    2005-01-01

    ISO/IEC 27001:2005 covers all types of organizations (e.g. commercial enterprises, government agencies, not-for profit organizations). ISO/IEC 27001:2005 specifies the requirements for establishing, implementing, operating, monitoring, reviewing, maintaining and improving a documented Information Security Management System within the context of the organization's overall business risks. It specifies requirements for the implementation of security controls customized to the needs of individual organizations or parts thereof. ISO/IEC 27001:2005 is designed to ensure the selection of adequate and proportionate security controls that protect information assets and give confidence to interested parties. ISO/IEC 27001:2005 is intended to be suitable for several different types of use, including the following: use within organizations to formulate security requirements and objectives; use within organizations as a way to ensure that security risks are cost effectively managed; use within organizations to ensure comp...

  7. Ground Systems Development Environment (GSDE) interface requirements analysis: Operations scenarios

    Science.gov (United States)

    Church, Victor E.; Phillips, John

    1991-01-01

    This report is a preliminary assessment of the functional and data interface requirements to the link between the GSDE GS/SPF (Amdahl) and the Space Station Control Center (SSCC) and Space Station Training Facility (SSTF) Integration, Verification, and Test Environments (IVTE's). These interfaces will be involved in ground software development of both the control center and the simulation and training systems. Our understanding of the configuration management (CM) interface and the expected functional characteristics of the Amdahl-IVTE interface is described. A set of assumptions and questions that need to be considered and resolved in order to complete the interface functional and data requirements definitions are presented. A listing of information items defined to describe software configuration items in the GSDE CM system is included. It also includes listings of standard reports of CM information and of CM-related tools in the GSDE.

  8. Integrated Station Executive requirements and systems design approach

    Science.gov (United States)

    Berger, Eugene L.; Morris, C. Doug

    1992-01-01

    The Avionics Office of the Space Station Projects Office at Johnson Space Center (JSC) is working to define and integrate end-to-end requirements for the Space Station Freedom Program (SSFP) space-ground operations. As part of these efforts, the project office has had the MITRE Corporation perform assessments and analyses in areas where they had particular concern. These areas include the changing concepts for test methodologies, the operation and performance of the communication protocols, end-to-end network management, and the Master Objects Data Base (MODB). Since the recent restructure of the space station design, a new software application, the Integrated Station Executive (ISE), has been established. This application is to act as an executive agent along with the crew and ground controllers, while replacing (or absorbing) many of the system management functions that required a home when distributed element management was eliminated. This document summarizes the current state of the ISE requirements and assesses the characteristics of the current design. MITRE's goals in this assessment and analysis is twofold: first, identify any internal inconsistencies in either the requirements or in the current design; and second, to examine the applicability of the Open System Interconnection (OSI) management standards. Inasmuch as the ISE has been defined as the executive or operations manager application within the integrated avionics of the space station, special attention is given to adapting OSI management for the specification of the ISE functions.

  9. Unmanned Aircraft System Control and ATC Communications Bandwidth Requirements

    Science.gov (United States)

    Henriksen, Steve

    2008-01-01

    There are significant activities taking place to establish the procedures and requirements for safe and routine operation of unmanned aircraft systems (UAS) in the National Airspace System (NAS). Among the barriers to overcome in achieving this goal is the lack of sufficient frequency spectrum necessary for the UAS control and air traffic control (ATC) communications links. This shortcoming is compounded by the fact that the UAS control communications links will likely be required to operate in protected frequency spectrum, just as ATC communications links are, because they relate to "safety and regularity of flight." To support future International Telecommunications Union (ITU) World Radio Conference (WRC) agenda items concerning new frequency allocations for UAS communications links, and to augment the Future Communications Study (FCS) Technology Evaluation Group efforts, NASA Glenn Research Center has sponsored a task to estimate the UAS control and ATC communications bandwidth requirements for safe, reliable, and routine operation of UAS in the NAS. This report describes the process and results of that task. The study focused on long-term bandwidth requirements for UAS approximately through 2030.

  10. Timing requirement description diagrams for real-time system verification

    OpenAIRE

    Fontan, Benjamin; De Saqui-Sannes, Pierre; Apvrille, Ludovic

    2008-01-01

    TURTLE is a real-time UML profile introduced a few years ago to address the analysis, design and deployment of time-constrained systems. The profile has a formal semantics. Further, it is supported by an open source toolkit: TTool. The latter enables formal verification of TURTLE models without specific knowledge of mathematical notations or formal languages. This paper proposes to extend TURTLE to cover the requirement capture phase, to check a model against formally expressed temporal requi...

  11. Requirements for a safety parameter display system in shutdown conditions

    International Nuclear Information System (INIS)

    This working report describes user requirements related to the monitoring of safety-related functions and process parameters during shutdown states of NPPs. These low power operating modes include, for example, warm and cold shutdowns, refuelling and maintenance, as well as related state transitions such as starting-up and shutting-down. The discussion is limited to PWR and BWR designs. The focus is on end users' needs, i.e. the information and functions needed for monitoring and management of plant systems during shutdown conditions. The functions of an integrated plant information and control system have been outlined. Implementation issues have been discussed on a very general level only (author) (ml)

  12. Safety design requirements for safety systems and components of JSFR

    International Nuclear Information System (INIS)

    Safety design requirements for JSFR were summarized taking the development targets of FaCT project and design feature of JSFR into account. The related safety principle and requirements for Monju, CRBRP, PRISM, SPX, LWRs, IAEA standards, goals of GIF and basic principle of INPRO etc. were also taken into account so that the safety design requirements can be a next-generation global-standard. The development targets for safety and reliability are set based on that of FaCT. Namely, ensuring safety and reliability equal to future LWR and related fuel cycle facilities. In order to achieve these targets, the defence-in-depth philosophy is used as the basic safety design principle. General features of the safety design requirements are 1) Achievement of higher reliability, 2) Achievement of higher inspectability and maintainability, 3) Introduction of passive safety features, 4) Reduction of operator action needs, 5) Design consideration against Beyond Design Basis Events, 6) In Vessel Retention of degraded core materials, 7) Prevention and mitigation against sodium chemical reactions, 8) Design against external events. Current specific requirements for the each system and component are summarized taking the basic design concept of JSFR into account, which is an advanced loop type large output power plant with mixed oxide fuelled core. (author)

  13. Performance requirements of automotive batteries for future car electrical systems

    Science.gov (United States)

    Friedrich, R.; Richter, G.

    The further increase in the number of power-consuming functions which has been announced for future vehicle electrical systems, and in particular the effects of new starting systems on battery performance, requires a further optimization of the lead acid system coupled with effective energy management, and enhanced battery operating conditions. In the face of these increased requirements, there are proven benefits to splitting the functions of a single SLI battery between two separate, special-purpose batteries, each of which are optimized, for high power output and for high energy throughput, respectively. This will bring about a marked improvement in weight, reliability, and state of charge (SOC). The development of special design starter and service batteries is almost completed and will lead to new products with a high standard of reliability. The design of the power-optimized lead acid accumulator is particularly suitable for further development as the battery for a 42/36 V electrical system. This is intended to improve the efficiency of the generator and the various power-consuming functions and to improve start/stop operation thereby bringing about a marked reduction in the fuel consumption of passenger cars. This improvement can also be assisted by a charge management system used in conjunction with battery status monitoring.

  14. Architectural requirements for the Red Storm computing system.

    Energy Technology Data Exchange (ETDEWEB)

    Camp, William J.; Tomkins, James Lee

    2003-10-01

    This report is based on the Statement of Work (SOW) describing the various requirements for delivering 3 new supercomputer system to Sandia National Laboratories (Sandia) as part of the Department of Energy's (DOE) Accelerated Strategic Computing Initiative (ASCI) program. This system is named Red Storm and will be a distributed memory, massively parallel processor (MPP) machine built primarily out of commodity parts. The requirements presented here distill extensive architectural and design experience accumulated over a decade and a half of research, development and production operation of similar machines at Sandia. Red Storm will have an unusually high bandwidth, low latency interconnect, specially designed hardware and software reliability features, a light weight kernel compute node operating system and the ability to rapidly switch major sections of the machine between classified and unclassified computing environments. Particular attention has been paid to architectural balance in the design of Red Storm, and it is therefore expected to achieve an atypically high fraction of its peak speed of 41 TeraOPS on real scientific computing applications. In addition, Red Storm is designed to be upgradeable to many times this initial peak capability while still retaining appropriate balance in key design dimensions. Installation of the Red Storm computer system at Sandia's New Mexico site is planned for 2004, and it is expected that the system will be operated for a minimum of five years following installation.

  15. Power system requirements and selection for the space exploration initiative

    International Nuclear Information System (INIS)

    The Space Exploration Initiative (SEI) seeks to reestablish a US program of manned and unmanned space exploration. The President has called for a program which includes a space station element, a manned habitation of the moon, and a human exploration of Mars. The NASA Synthesis Group has developed four significantly different architectures for the SEI program. One key element of a space exploration effort is the power required to support the missions. The Power Speciality Team of the Synthesis Group was tasked with assessing and evaluating the power requirements and candidate power technologies for such missions. Inputs to the effort came from existing NASA studies as well as other governments agency inputs such as those from DOD and DOE. In addition, there were industry and university briefings and results of solicitations from the AIAA and the general public as part of the NASA outreach effort. Because of the variety of power needs in the SEI program, there will be a need for multiple power system technologies including solar, nuclear and electrochemical. Due to the high rocket masses required to propel payloads to the moon and beyond to Mars, there is great emphasis placed on the need for high power density and high energy density systems. Power system technology development work is needed results will determine the ultimate technology selections. 23 refs., 10 figs

  16. A framework for assessing learning assistants' reflective writing assignments

    Science.gov (United States)

    Cochran, Geraldine L.; Brookes, David T.; Kramer, Laird H.

    2013-01-01

    At Florida International University we have implemented a learning assistant (LA) program based on the Colorado Learning Assistant Model. [1] As a part of this program, students take a course on science and mathematics education theory and practice in which they are required to submit written reflections. Past anecdotal evidence suggests that students in the LAP at Florida International University are using these writing assignments to reflect on their teaching experiences. The purpose of this study was to a) determine if the writing assignments submitted give evidence that our students are engaging in reflection and b) determine if our students are engaging in deep levels of reflection. In this investigation, we relied on a rubric based on Hatton and Smith's (1995) [2] "Criteria for the Recognition of Evidence for Different Types of Reflective Writing." In this paper, we document a) a system for characterizing student reflections and b) how we give them feedback.

  17. Assignment Choice: Do Students Choose Briefer Assignments or Finishing What They Started?

    Science.gov (United States)

    Hawthorn-Embree, Meredith L.; Skinner, Christopher H.; Parkhurst, John; O'Neil, Michael; Conley, Elisha

    2010-01-01

    Academic skill development requires engagement in effortful academic behaviors. Although students may be more likely to choose to engage in behaviors that require less effort, they also may be motivated to complete assignments that they have already begun. Seventh-grade students (N = 88) began a mathematics computation worksheet, but were stopped…

  18. Electric Bike Sharing--System Requirements and Operational Concepts

    Energy Technology Data Exchange (ETDEWEB)

    Cherry, Christopher; Worley, Stacy; Jordan, David

    2010-08-01

    Bike sharing is an exciting new model of public-private transportation provision that has quickly emerged in the past five years. Technological advances have overcome hurdles of early systems and cities throughout the globe are adopting this model of transportation service. Electric bikes have simultaneously gained popularity in many regions of the world and some have suggested that shared electric bikes could provide an even higher level of service compared to existing systems. There are several challenges that are unique to shared electric bikes: electric-assisted range, recharging protocol, and bike and battery checkout procedures. This paper outlines system requirements to successfully develop and deploy an electric bike sharing system, focusing on system architecture, operational concepts, and battery management. Although there is little empirical evidence, electric bike sharing could be feasible, depending on demand and battery management, and can potentially improve the utility of existing bike sharing systems. Under most documented bike sharing use scenarios, electric bike battery capacity is insufficient for a full day of operation, depending on recharging protocol. Off-board battery management is a promising solution to address this problem. Off-board battery management can also support solar recharging. Future pilot tests will be important and allow empirical evaluation of electric bikesharing system performance. (auth)

  19. Safety requirements for a nuclear power plant electric power system

    International Nuclear Information System (INIS)

    This work aims at identifying the safety requirements for the electric power system in a typical nuclear power plant, in view of the UNSRC and the IAEA. Description of a typical system is provided, followed by a presentation of the scope of the information required for safety evaluation of the system design and performance. The acceptance and design criteria that must be met as being specified by both regulatory systems, are compared. Means of implementation of such criteria as being described in the USNRC regulatory guides and branch technical positions on one hand and in the IAEA safety guides on the other hand are investigated. It is concluded that the IAEA regulations address the problems that may be faced with in countries having varying grid sizes ranging from large stable to small potentially unstable ones; and that they put emphasis on the onsite standby power supply. Also, in this respect the Americans identify the grid as the preferred power supply to the plant auxiliaries, while the IAEA leaves the possibility that the preferred power supply could be either the grid or the unit main generator depending on the reliability of each. Therefore, it is found that it is particularly necessary in this area of electric power supplies to deal with the IAEA and the American sets of regulations as if each complements and not supplements the other. (author)

  20. A Review on Quantitative Approaches for Dock Door Assignment in Cross-Docking

    Directory of Open Access Journals (Sweden)

    Adibah Shuib

    2012-01-01

    Full Text Available Cross docking is a relatively new technique in supply chain operations. It offers limited storage time to maximize the efficiency of goods transshipment. Efficient operation of a cross docking system requires an appropriate coordination of inbound and outbound flows, accurate planning and dynamic scheduling.  The planning strategies at cross docking terminals, which are receiving growing attention today, are the truck-to-door assignment and destination to door assignment problems. This paper provides a comprehensive literature review of quantitative approaches in dock door assignment problems of cross docking planning. The contributions of this paper are to identify the gap of knowledge in operational levels mainly in dock door assignment and to point out the future research direction in cross docking.

  1. Efficient eigenvalue assignment by state and output feedback with applications for large space structures

    Science.gov (United States)

    Vannell, Eric C.; Kenny, Sean P.; Maghami, Peiman G.

    1995-01-01

    The erection and deployment of large flexible structures having thousands of degrees of freedom requires controllers based on new techniques of eigenvalue assignment that are computationally stable and more efficient. Scientists at NASA Langley Research Center have developed a novel and efficient algorithm for the eigenvalue assignment of large, time-invariant systems using full-state and output feedback. The objectives of this research were to improve upon the output feedback version of this algorithm, to produce a toolbox of MATLAB functions based on the efficient eigenvalue assignment algorithm, and to experimentally verify the algorithm and software by implementing controllers designed using the MATLAB toolbox on the phase 2 configuration of NASA Langley's controls-structures interaction evolutionary model, a laboratory model used to study space structures. Results from laboratory tests and computer simulations show that effective controllers can be designed using software based on the efficient eigenvalue assignment algorithm.

  2. Solving Benchmark Frequency Assignment Problem of Helsinki Regions Network by a Novel Nature Inspired Algorithm

    Directory of Open Access Journals (Sweden)

    Avtar Singh Buttar

    2013-03-01

    Full Text Available The Frequency Assignment Problem is assignment of frequencies or channels to establish link between base station and mobile transmitter in cellular system. To avoid interference, minimum separation between assigned frequencies is required. This problem is NP-hard. Due to limited availability of spectrum and reuse of same frequencies at different geographical locations, an excellent assignment is to be done, which must satisfy electromagnetic constraints with respect to demand in each cell. This paper presents a novel DGWCHD algorithm for frequency assignment problem in cellular radio networks. The objective is to assign the frequency satisfying electromagnetic constraints for given demand with minimum use of frequency bandwidth. The proposed algorithm is based on real wild animal such as dog’s intelligent strategies during chasing and hunting their prey. The proposed algorithm is implemented on benchmark Kunz’s test problems, which are practical FAP problems based on area around 25 regions in Helsinki, Finland. The DGWCHD algorithm has been used for call ordering and FEA strategy for assignment. The performance of the proposed novel DGWCHD algorithm has been compared with other nature inspired techniques. The results obtained are very optimistic and encouraging

  3. Handbook of SOFC system in buildings. Legislation, standards and requirements

    Energy Technology Data Exchange (ETDEWEB)

    Klobut, K.; Vesanen, T.; Pykaelae, M.-L.; Sipilae, K.; Kiviaho, J.; Rosenberg, R.

    2009-02-15

    This publication is aimed at supporting the installation and exploitation of 50 kW SOFC in an office building. In this context, the standardisation situation has been scanned worldwide. Requirements concerning connection of the SOFC system to the public networks have been explored and solutions consulted with authorities and owners of the local natural gas, heating and electricity networks. Installed fuel cell systems must be CE marked and comply with a set of European Union directives. The group of standards related to stationary systems produced by the IEC TC 105 committee is the most important regulatory base for application preparation. A fuel cell power system and associated equipment, components, and controls shall be sited and installed in accordance with the manufacturer's instructions. A written fire prevention and emergency plan shall be provided as required by and in accordance with national standards. The room or area where the fuel cell power system is installed shall have a hydrogen detector. A new proposal has been developed, which combines a fuel cell system with the otherwise typical district heating connection scheme in Finland. Materials in connection with this must be carefully selected in the primary and secondary side to qualify for the whole life cycle. It must be possible to measure energy consumption in both directions (buy/sell mode). There are important requirements concerning electric energy-generating units. All exposed conductive parts of the electric power system shall be connected to the main earthing terminal or bar. If the neutral conductor exists it shall be connected at the network supply end to the main earthing terminal. The output filters of an interconnection device may not cause resonances with the rest of the electric grid. The interference with the grid operation is not allowed by any other reactive components that may cause changes in the operating parameters of the filters. The systems equipped with an inverter may

  4. Writing Assignments that Promote Active Learning

    Science.gov (United States)

    Narayanan, M.

    2014-12-01

    Encourage students to write a detailed, analytical report correlating classroom discussions to an important historical event or a current event. Motivate students interview an expert from industry on a topic that was discussed in class. Ask the students to submit a report with supporting sketches, drawings, circuit diagrams and graphs. Propose that the students generate a complete a set of reading responses pertaining to an assigned topic. Require each student to bring in one comment or one question about an assigned reading. The assignment should be a recent publication in an appropriate journal. Have the students conduct a web search on an assigned topic. Ask them to generate a set of ideas that can relate to classroom discussions. Provide the students with a study guide. The study guide should provide about 10 or 15 short topics. Quiz the students on one or two of the topics. Encourage the students to design or develop some creative real-world examples based on a chapter discussed or a topic of interest. Require that students originate, develop, support and defend a viewpoint using a specifically assigned material. Make the students practice using or utilizing a set of new technical terms they have encountered in an assigned chapter. Have students develop original examples explaining the different terms. Ask the students to select one important terminology from the previous classroom discussions. Encourage the students to explain why they selected that particular word. Ask them to talk about the importance of the terminology from the point of view of their educational objectives and future career. Angelo, T. A. (1991). Ten easy pieces: Assessing higher learning in four dimensions. In T. A. Angelo (Ed.), Classroom research: Early lessons from success (pp. 17-31). New Directions for Teaching and Learning, No. 46. San Francisco: Jossey-Bass.

  5. Design Requirements for Designing Responsive Modular Manufacturing Systems

    DEFF Research Database (Denmark)

    Jørgensen, Steffen; Madsen, Ole; Nielsen, Kjeld;

    2011-01-01

    Customers demand the newest technologies, newest designs, the ability to customise, high quality, and all this at a low cost. These are trends which challenge the traditional way of operating manufacturing companies, especially in regard to product development and manufacturing. Research and...... industrial work are conducted in this area and has resulted in a wide span of theories, models, and methods. Manufacturing companies are, regardless hereon, still facing these challenges, especially regarding their manufacturing systems. Several theories state that modular manufacturing concepts possess the...... requirement in order to achieve responsiveness and other benefits of modular manufacturing systems (MMS). Due to the complex and interrelated nature of a production system and its surroundings these production needs are complex to identify. This paper presents an analysis framework for identification of...

  6. Korea advanced nuclear energy system development. Requirements and strategy

    International Nuclear Information System (INIS)

    The requirements for Advanced Nuclear Energy System development in Korea are to improve safety, economics, environmental impact, and social acceptability compared to Korean Next Generation Reactor (KNGR) and to maximize nuclear fuel resource utilization. The target for such system is to commission first commercial unit around 2015. Since Korean R and D and industrial capabilities as well as resources are limited, viable reactor and fuel cycle development strategies have to be analyzed and various good options synthesized to suit for the national, regional, and global needs. Undoubtedly, most viable strategy would be through well balanced joint cooperations of bilateral, or multilateral nature depending upon the progressive stages of advanced nuclear energy system development. (author)

  7. Heat engine requirements for advanced solar thermal power systems

    Science.gov (United States)

    Jaffe, L. D.; Pham, H. Q.

    1981-01-01

    Requirements and constraints are established for power conversion subsystems, including heat engine, alternator and auxiliaries, of dish concentrator solar thermal power systems. In order to be competitive with conventional power systems, it is argued that the heat engine should be of less than 40 kW rated output, in a subsystem with an efficiency of at least 40% at rated output and at least 37% at half power. An interval between major overhauls of 50,000 hours is also desirable, along with minor maintenance and lubrication not more than four times a year requiring no more than one man-hour each time, and optimal reliability. Also found to be important are the capability for hybrid operation using heat from a solar receiver, fuel-fired combustor or both simultaneously, operation at any attitude, stability to transients in input power and output loading, operation at ambient temperatures from -30 to 50 C, and compatibility with environmental and safety requirements. Cost targets include a price of $180/kWe, and operation, maintenance and replacement costs averaging $0.001/kWh for 30 years of operation.

  8. Requirements and design concept for a facility mapping system

    International Nuclear Information System (INIS)

    The Department of Energy (DOE) has for some time been considering the Decontamination and Dismantlement (D ampersand D) of facilities which are no longer in use, but which are highly contaminated with radioactive wastes. One of the holdups in performing the D ampersand D task is the accumulation of accurate facility characterizations that can enable a safe and orderly cleanup process. According to the Technical Strategic Plan for the Decontamination and Decommissioning Integrated Demonstration, open-quotes the cost of characterization using current baseline technologies for approximately 100 acres of gaseous diffusion plant at Oak Ridge alone is, for the most part incalculableclose quotes. Automated, robotic techniques will be necessary for initial characterization and continued surveillance of these types of sites. Robotic systems are being designed and constructed to accomplish these tasks. This paper describes requirements and design concepts for a system to accurately map a facility contaminated with hazardous wastes. Some of the technologies involved in the Facility Mapping System are: remote characterization with teleoperated, sensor-based systems, fusion of data sets from multiple characterization systems, and object recognition from 3D data models. This Facility Mapping System is being assembled by Oak Ridge National Laboratory for the DOE Office of Technology Development Robotics Technology Development Program

  9. Health Recommender Systems: Concepts, Requirements, Technical Basics and Challenges

    Directory of Open Access Journals (Sweden)

    Martin Wiesner

    2014-03-01

    Full Text Available During the last decades huge amounts of data have been collected in clinical databases representing patients’ health states (e.g., as laboratory results, treatment plans, medical reports. Hence, digital information available for patient-oriented decision making has increased drastically but is often scattered across different sites. As as solution, personal health record systems (PHRS are meant to centralize an individual’s health data and to allow access for the owner as well as for authorized health professionals. Yet, expert-oriented language, complex interrelations of medical facts and information overload in general pose major obstacles for patients to understand their own record and to draw adequate conclusions. In this context, recommender systems may supply patients with additional laymen-friendly information helping to better comprehend their health status as represented by their record. However, such systems must be adapted to cope with the specific requirements in the health domain in order to deliver highly relevant information for patients. They are referred to as health recommender systems (HRS. In this article we give an introduction to health recommender systems and explain why they are a useful enhancement to PHR solutions. Basic concepts and scenarios are discussed and a first implementation is presented. In addition, we outline an evaluation approach for such a system, which is supported by medical experts. The construction of a test collection for case-related recommendations is described. Finally, challenges and open issues are discussed.

  10. Conceptual design requirements for Korean Reference HLW disposal System

    Energy Technology Data Exchange (ETDEWEB)

    Choi, Heui Joo; Choi, Jong Won; Hahn, Pil Son; Lee, Jong Youl; Kim, Kyung Soo; Kim, Sung Ki; Cho, Dong Keun; Lee, Yang

    2005-05-15

    This report outlined the requirements for the conceptual design of KRS(Korean Reference HLW disposal System). The site for the disposal of high-level radioactive wastes has not yet been selected in Korea. Since the KRS should be designed under these circumstances, the necessary requirements which should be determined are studied in the report. The amounts of spent fuels from the nuclear power plants in the long-term national power development plan are projected. With this estimation the disposal rates of CANDU and PWR spent fuels are analyzed and determined. The national and international regulations regarding the disposal of HLW are summarized. The functions of the underground facilities are defined. The representative geological conditions are determined since no site is yet decided in Korea.

  11. 76 FR 55880 - Recording Assignments

    Science.gov (United States)

    2011-09-09

    ..., depending on the date they were recorded. The public may also search patent and trademark assignment... United States Patent and Trademark Office Recording Assignments ACTION: Proposed collection; comment request. SUMMARY: The United States Patent and Trademark Office (USPTO), as part of its continuing...

  12. Using the Same Problem with Different Techniques in Programming Assignments: An Empirical Study of Its Effectiveness

    Science.gov (United States)

    Newby, Michael; Nguyen, ThuyUyen H.

    2010-01-01

    This paper examines the effectiveness of a technique that first appeared as a Teaching Tip in the Journal of Information Systems Education. In this approach the same problem is used in every programming assignment within a course, but the students are required to use different programming techniques. This approach was used in an intermediate C++…

  13. Towards Automated Structure-Based NMR Resonance Assignment

    Science.gov (United States)

    Jang, Richard; Gao, Xin; Li, Ming

    We propose a general framework for solving the structure-based NMR backbone resonance assignment problem. The core is a novel 0-1 integer programming model that can start from a complete or partial assignment, generate multiple assignments, and model not only the assignment of spins to residues, but also pairwise dependencies consisting of pairs of spins to pairs of residues. It is still a challenge for automated resonance assignment systems to perform the assignment directly from spectra without any manual intervention. To test the feasibility of this for structure-based assignment, we integrated our system with our automated peak picking and sequence-based resonance assignment system to obtain an assignment for the protein TM1112 with 91% recall and 99% precision without manual intervention. Since using a known structure has the potential to allow one to use only N-labeled NMR data and avoid the added expense of using C-labeled data, we work towards the goal of automated structure-based assignment using only such labeled data. Our system reduced the assignment error of Xiong-Pandurangan-Bailey-Kellogg's contact replacement (CR) method, which to our knowledge is the most error-tolerant method for this problem, by 5 folds on average. By using an iterative algorithm, our system has the added capability of using the NOESY data to correct assignment errors due to errors in predicting the amino acid and secondary structure type of each spin system. On a publicly available data set for Ubiquitin, where the type prediction accuracy is 83%, we achieved 91% assignment accuracy, compared to the 59% accuracy that was obtained without correcting for typing errors.

  14. Improved Heuristics for Multi-Stage Requirements Planning Systems

    OpenAIRE

    Joseph D. Blackburn; Robert A. Millen

    1982-01-01

    Most of the recent studies of heuristic lot-sizing techniques for multi-stage material requirements planning systems have investigated the problem in the context of a single stage. In this paper, the multi-stage problem is first modeled analytically to indicate the potential errors inherent in the commonly proposed single-pass, stage-by-stage approaches (e.g., Wagner-Whitin). Then, based on this analysis, several simple cost modifications are suggested to improve the global optimality of thes...

  15. Requirements for a safety parameter display system in shutdown conditions

    Energy Technology Data Exchange (ETDEWEB)

    Tommila, Teemu

    1999-02-15

    This working report describes user requirements related to the monitoring of safety-related functions and process parameters during shutdown states of NPPs. These low power operating modes include, for example, warm and cold shutdowns, refuelling and maintenance, as well as related state transitions such as starting-up and shutting-down. The discussion is limited to PWR and BWR designs. The focus is on end users' needs, i.e. the information and functions needed for monitoring and management of plant systems during shutdown conditions. The functions of an integrated plant information and control system have been outlined. Implementation issues have been discussed on a very general level only (author) (ml)

  16. [Requirements for the successful installation of an data management system].

    Science.gov (United States)

    Benson, M; Junger, A; Quinzio, L; Hempelmann, G

    2002-08-01

    Due to increasing requirements on medical documentation, especially with reference to the German Social Law binding towards quality management and introducing a new billing system (DRGs), an increasing number of departments consider to implement a patient data management system (PDMS). The installation should be professionally planned as a project in order to insure and complete a successful installation. The following aspects are essential: composition of the project group, definition of goals, finance, networking, space considerations, hardware, software, configuration, education and support. Project and finance planning must be prepared before beginning the project and the project process must be constantly evaluated. In selecting the software, certain characteristics should be considered: use of standards, configurability, intercommunicability and modularity. Our experience has taught us that vaguely defined goals, insufficient project planning and the existing management culture are responsible for the failure of PDMS installations. The software used tends to play a less important role. PMID:12165919

  17. Reliability and availability requirements analysis for DEMO: fuel cycle system

    International Nuclear Information System (INIS)

    The Demonstration Power Plant (DEMO) will be a fusion reactor prototype designed to demonstrate the capability to produce electrical power in a commercially acceptable way. Two of the key elements of the engineering development of the DEMO reactor are the definitions of reliability and availability requirements (or targets). The availability target for a hypothesized Fuel Cycle has been analysed as a test case. The analysis has been done on the basis of the experience gained in operating existing tokamak fusion reactors and developing the ITER design. Plant Breakdown Structure (PBS) and Functional Breakdown Structure (FBS) related to the DEMO Fuel Cycle and correlations between PBS and FBS have been identified. At first, a set of availability targets has been allocated to the various systems on the basis of their operating, protection and safety functions. 75% and 85% of availability has been allocated to the operating functions of fuelling system and tritium plant respectively. 99% of availability has been allocated to the overall systems in executing their safety functions. The chances of the systems to achieve the allocated targets have then been investigated through a Failure Mode and Effect Analysis and Reliability Block Diagram analysis. The following results have been obtained: 1) the target of 75% for the operations of the fuelling system looks reasonable, while the target of 85% for the operations of the whole tritium plant should be reduced to 80%, even though all the tritium plant systems can individually reach quite high availability targets, over 90% - 95%; 2) all the DEMO Fuel Cycle systems can reach the target of 99% in accomplishing their safety functions. (authors)

  18. Tabu search for target-radar assignment

    DEFF Research Database (Denmark)

    Hindsberger, Magnus; Vidal, Rene Victor Valqui

    2000-01-01

    In the paper the problem of assigning air-defense illumination radars to enemy targets is presented. A tabu search metaheuristic solution is described and the results achieved are compared to those of other heuristic approaches, implementation and experimental aspects are discussed. It is argued...... that tabu search could be used in near real-time decision making systems...

  19. Development of requirements tracking and verification system for the software design of distributed control system

    Energy Technology Data Exchange (ETDEWEB)

    Jung, Chul Hwan; Kim, Jang Yeol; Kim, Jung Tack; Lee, Jang Soo; Ham, Chang Shik [Korea Atomic Energy Research Institute, Taejon (Korea, Republic of)

    1998-12-31

    In this paper a prototype of Requirement Tracking and Verification System(RTVS) for a Distributed Control System was implemented and tested. The RTVS is a software design and verification tool. The main functions required by the RTVS are managing, tracking and verification of the software requirements listed in the documentation of the DCS. The analysis of DCS software design procedures and interfaces with documents were performed to define the user of the RTVS, and the design requirements for RTVS were developed. 4 refs., 3 figs. (Author)

  20. Upgrading of the SPS injection kicker system for LHC requirements

    CERN Document Server

    Ducimetière, L; Uythoven, J; Vossenberg, Eugène B; Han, Q

    1998-01-01

    The present SPS injection kicker system is composed of 12 travelling wave magnets connected in pairs to six pulse generators. The eight most upstream magnets ('S'-type) have a kick rise time (2-98%) o f 145 ns and the remaining four ('L'-type) of 215 ns. The flat top ripple of the kick is ±1%. In the future, this system will also inject protons and ions for the LHC, with a bunch spacing of respect ively 220 ns and 125 ns, and a flat top ripple requirement of at most ±0.5%. Important modifications, concerning both magnets and generators, are then required to meet these goals. For ion injection only 'S'-type magnets will be used. The reduction of the kick rise time will be achieved by shortening the magnet length and increasing the characteristic impedance. To compensate for the loss in tota l kick strength, four new magnets and two new pulse generators will be added. At the moment it is not intended to modify the 'L'-type magnets. Most of the pulse forming networks (PFN's) must be adapt ed to the higher char...

  1. Focusing the research agenda for simulation training visual system requirements

    Science.gov (United States)

    Lloyd, Charles J.

    2014-06-01

    Advances in the capabilities of the display-related technologies with potential uses in simulation training devices continue to occur at a rapid pace. Simultaneously, ongoing reductions in defense spending stimulate the services to push a higher proportion of training into ground-based simulators to reduce their operational costs. These two trends result in increased customer expectations and desires for more capable training devices, while the money available for these devices is decreasing. Thus, there exists an increasing need to improve the efficiency of the acquisition process and to increase the probability that users get the training devices they need at the lowest practical cost. In support of this need the IDEAS program was initiated in 2010 with the goal of improving display system requirements associated with unmet user needs and expectations and disrupted acquisitions. This paper describes a process of identifying, rating, and selecting the design parameters that should receive research attention. Analyses of existing requirements documents reveal that between 40 and 50 specific design parameters (i.e., resolution, contrast, luminance, field of view, frame rate, etc.) are typically called out for the acquisition of a simulation training display system. Obviously no research effort can address the effects of this many parameters. Thus, we developed a defensible strategy for focusing limited R&D resources on a fraction of these parameters. This strategy encompasses six criteria to identify the parameters most worthy of research attention. Examples based on display design parameters recommended by stakeholders are provided.

  2. Making the Shift: From Traditional Research Assignments to Guiding Inquiry Learning

    Science.gov (United States)

    Maniotes, Leslie K.; Kuhlthau, Carol C.

    2014-01-01

    The traditional research assignment is a common approach for teachers unaware of an inquiry process. In the traditional assignment, on the very first day that the work is assigned, students are given a topic or asked to choose a topic from a prepared list. They are given the parameters of the assignment, the number of sources required, the number…

  3. Space station data system analysis/architecture study. Task 1: Functional requirements definition, DR-5. Appendix: Requirements data base

    Science.gov (United States)

    1985-01-01

    Appendix A contains data that characterize the system functions in sufficient depth as to determine the requirements for the Space Station Data System (SSDS). This data is in the form of: (1) top down traceability report; (2) bottom up traceability report; (3) requirements data sheets; and (4) cross index of requirements paragraphs of the source documents and the requirements numbers. A data base users guide is included that interested parties can use to access the requirements data base and get up to date information about the functions.

  4. L-Band Digital Aeronautical Communications System Engineering - Concepts of Use, Systems Performance, Requirements, and Architectures

    Science.gov (United States)

    Zelkin, Natalie; Henriksen, Stephen

    2010-01-01

    This NASA Contractor Report summarizes and documents the work performed to develop concepts of use (ConUse) and high-level system requirements and architecture for the proposed L-band (960 to 1164 MHz) terrestrial en route communications system. This work was completed as a follow-on to the technology assessment conducted by NASA Glenn Research Center and ITT for the Future Communications Study (FCS). ITT assessed air-to-ground (A/G) communications concepts of use and operations presented in relevant NAS-level, international, and NAS-system-level documents to derive the appropriate ConUse relevant to potential A/G communications applications and services for domestic continental airspace. ITT also leveraged prior concepts of use developed during the earlier phases of the FCS. A middle-out functional architecture was adopted by merging the functional system requirements identified in the bottom-up assessment of existing requirements with those derived as a result of the top-down analysis of ConUse and higher level functional requirements. Initial end-to-end system performance requirements were derived to define system capabilities based on the functional requirements and on NAS-SR-1000 and the Operational Performance Assessment conducted as part of the COCR. A high-level notional architecture of the L-DACS supporting A/G communication was derived from the functional architecture and requirements.

  5. Observing System Simulations for ASCENDS: Synthesizing Science Measurement Requirements (Invited)

    Science.gov (United States)

    Kawa, S. R.; Baker, D. F.; Schuh, A. E.; Crowell, S.; Rayner, P. J.; Hammerling, D.; Michalak, A. M.; Wang, J. S.; Eluszkiewicz, J.; Ott, L.; Zaccheo, T.; Abshire, J. B.; Browell, E. V.; Moore, B.; Crisp, D.

    2013-12-01

    The measurement of atmospheric CO2 from space using active (lidar) sensing techniques has several potentially significant advantages in comparison to current and planned passive CO2 instruments. Application of this new technology aims to advance CO2 measurement capability and carbon cycle science into the next decade. The NASA Active Sensing of Carbon Emissions, Nights, Days, and Seasons (ASCENDS) mission has been recommended by the US National Academy of Sciences Decadal Survey for the next generation of space-based CO2 observing systems. ASCENDS is currently planned for launch in 2022. Several possible lidar instrument approaches have been demonstrated in airborne campaigns and the results indicate that such sensors are quite feasible. Studies are now underway to evaluate performance requirements for space mission implementation. Satellite CO2 observations must be highly precise and unbiased in order to accurately infer global carbon source/sink fluxes. Measurement demands are likely to further increase in the wake of GOSAT, OCO-2, and enhanced ground-based in situ and remote sensing CO2 data. The objective of our work is to quantitatively and consistently evaluate the measurement capabilities and requirements for ASCENDS in the context of advancing our knowledge of carbon flux distributions and their dependence on underlying physical processes. Considerations include requirements for precision, relative accuracy, spatial/temporal coverage and resolution, vertical information content, interferences, and possibly the tradeoffs among these parameters, while at the same time framing a mission that can be implemented within a constrained budget. Here, we attempt to synthesize the results of observing system simulation studies, commissioned by the ASCENDS Science Requirements Definition Team, into a coherent set of mission performance guidelines. A variety of forward and inverse model frameworks are employed to reduce the potential dependence of the results on model

  6. Assessing Faculty Bias in Rating Embedded Assurance of Learning Assignments

    Science.gov (United States)

    Kim, Dong-gook; Helms, Marilyn M.

    2016-01-01

    Assurance of learning (AoL) processes for continuous improvement and accreditation require business schools to assess program goals. Findings from the process can lead to changes in course design or curriculum. Often AoL assignments are embedded into existing courses and assessed at regular intervals. Faculty members may evaluate an assignment in…

  7. On the Use of Writing Assignments in Intermediate Microeconomic Theory

    Science.gov (United States)

    O'Neill, Patrick B.

    2009-01-01

    A typical writing assignment in upper level required courses is a term paper. However many economics majors, particularly those in business schools, need to develop skill at writing shorter pieces. In this paper I describe numerous examples of shorter writing assignments that I have incorporated into an Intermediate Microeconomic Theory course.…

  8. National Ignition Facility system design requirements NIF integrated computer controls SDR004

    International Nuclear Information System (INIS)

    This System Design Requirement document establishes the performance, design, development, and test requirements for the NIF Integrated Computer Control System. The Integrated Computer Control System (ICCS) is covered in NIF WBS element 1.5. This document responds directly to the requirements detailed in the NIF Functional Requirements/Primary Criteria, and is supported by subsystem design requirements documents for each major ICCS Subsystem

  9. User requirements on the future laboratory information systems.

    Science.gov (United States)

    Brender, J; McNair, P

    1996-07-01

    Today numerous information technology solutions exist for the clinical laboratory which operate either as stand-alone functionalities or with ad hoc integration solutions. The OpenLabs (A2028) AIM Project puts emphasis on the design and specification of a framework for the interoperability of existing systems and new advanced services, and consequently concentrates on the issue of integration. The purpose of the OpenLabs open architecture is to serve as a functional solution to this integration. A basic principle for this open architecture is that each of the advanced services shall be able to function individually or in any combination with an existing Laboratory Information System (LIS), and that it shall enable new modular functionalities to be incorporated in a 'plug-and-play' fashion. The synthesis of the main user needs and requirements implies that the future IT solutions: (a) must be highly flexible and maximally customizable--by the users themselves; (b) are based on the concept of open systems, both technically and functionally, which enables modular functionalities from different vendors to co-operate forming a global LIS functionality; (c) are future viable and able to incorporate already installed IT functionalities; (d) support management of failure prevention, of repair, of success, and of change. The establishment of an open architecture implies that a market will develop for modular, scaleable, and cost-effective LIS features without today's dependence on individual manufacturers and hardware/software platforms. PMID:8875016

  10. Why the Rhetoric of CS Programming Assignments Matters

    Science.gov (United States)

    Wolfe, Joanna

    2004-06-01

    Despite the multiple potential benefits of asking students working on programming tasks to consider human factors, most programming assignments narrowly focus on technical details and requirements. Female students in particular may be attracted to assignments that emphasize human as well as technical factors. To assess how students respond to changes in the rhetorical presentation of programming instructions, 81 students completed questionnaires evaluating different assignment instructions. Students generally perceived assignments emphasizing real-world contexts and users as more motivating and enjoyable to program than those that did not emphasize human factors. Moreover, when asked what makes a "good" programming assignment, over half of the students volunteered that they looked for assignments stressing a real-world purpose, use or application.

  11. Six requirements for nuclear energy system and Candle reactor

    International Nuclear Information System (INIS)

    Future nuclear energy system should satisfy the six requirements for safety, wastes, A-bomb, resource, technical feasibility, and economy. CANDLE fast reactors, where shapes of neutron flux, nuclide densities and power density distributions remain constant but move to an axial direction, satisfy these requirements as follows: 1) Simple and safe: Control rod withdrawal accident never happens during normal operation. The power profile and reactor characteristics such as power feedback coefficients do not change during burn-up. Transportation and storage of fresh replacing fuels are safe and simple. Therefore, the reactor operation and maintenance are simple and reliable, and the frequency of undesired events is considerably reduced. The effect and possibility of CDF accidents (considered the most severe accident) becomes very small. 2) Waste: The volume (or weight) of spent fuel is 1/10 of LWR per produced energy. The amount of minor actinides is considerably small. 3) Nuclear proliferation and safeguards: CANDLE requires neither enriched uranium nor plutonium as replacing fuel at the normal operation. 4) Efficient fuel use: Only natural and/or depleted uranium is used as replacing fuels, and 40% of charged fuel can be burned by fission. This is more than fifty times the fission efficiency of LWR. The depleted uranium produced by 40 years of LWR operation can operate CANDLE reactors for more than 2000 years. 5) Technical feasibility: Measures for high fast neutron fluence are discussed. A start-up scenario of the first core is also presented. 6) Economy: Fuel cycle cost and O and M cost are smaller than the conventional reactors. The capital cost is discussed. (authors)

  12. Treatment Planning Systems for BNCT Requirements and Peculiarities

    CERN Document Server

    Daquino, G G

    2003-01-01

    The main requirements and peculiarities expected from the BNCT-oriented treatment planning system (TPS) are summarized in this paper. The TPS is a software, which can be integrated or composed by several auxiliary programs. It plays important roles inside the whole treatment planning of the patient's organ in BNCT. However, the main goal is the simulation of the irradiation, in order to obtain the optimal configuration, in terms of neutron spectrum, patient positioning and dose distribution in the tumour and healthy tissues. The presence of neutrons increases the level of complexity, because much more nuclear reactions need to be monitored and properly calculated during the simulation of the patient's treatment. To this purposes several 3D geometry reconstruction techniques, generally based on the CT scanning data, are implemented and Monte Carlo codes are normally used. The TPSs are expected to show also the results (basically doses and fluences) in a proper format, such as isocurves (or isosurfaces) along t...

  13. Computer system evolution requirements for autonomous checkout of exploration vehicles

    Science.gov (United States)

    Davis, Tom; Sklar, Mike

    1991-01-01

    This study, now in its third year, has had the overall objective and challenge of determining the needed hooks and scars in the initial Space Station Freedom (SSF) system to assure that on-orbit assembly and refurbishment of lunar and Mars spacecraft can be accomplished with the maximum use of automation. In this study automation is all encompassing and includes physical tasks such as parts mating, tool operation, and human visual inspection, as well as non-physical tasks such as monitoring and diagnosis, planning and scheduling, and autonomous visual inspection. Potential tasks for automation include both extravehicular activity (EVA) and intravehicular activity (IVA) events. A number of specific techniques and tools have been developed to determine the ideal tasks to be automated, and the resulting timelines, changes in labor requirements and resources required. The Mars/Phobos exploratory mission developed in FY89, and the Lunar Assembly/Refurbishment mission developed in FY90 and depicted in the 90 Day Study as Option 5, have been analyzed in detailed in recent years. The complete methodology and results are presented in FY89 and FY90 final reports.

  14. Basic Requirements for Systems Software Research and Development

    Science.gov (United States)

    Kuszmaul, Chris; Nitzberg, Bill

    1996-01-01

    Our success over the past ten years evaluating and developing advanced computing technologies has been due to a simple research and development (R/D) model. Our model has three phases: (a) evaluating the state-of-the-art, (b) identifying problems and creating innovations, and (c) developing solutions, improving the state- of-the-art. This cycle has four basic requirements: a large production testbed with real users, a diverse collection of state-of-the-art hardware, facilities for evalua- tion of emerging technologies and development of innovations, and control over system management on these testbeds. Future research will be irrelevant and future products will not work if any of these requirements is eliminated. In order to retain our effectiveness, the numerical aerospace simulator (NAS) must replace out-of-date production testbeds in as timely a fashion as possible, and cannot afford to ignore innovative designs such as new distributed shared memory machines, clustered commodity-based computers, and multi-threaded architectures.

  15. The Requirements and Design of the Rapid Prototyping Capabilities System

    Science.gov (United States)

    Haupt, T. A.; Moorhead, R.; O'Hara, C.; Anantharaj, V.

    2006-12-01

    The Rapid Prototyping Capabilities (RPC) system will provide the capability to rapidly evaluate innovative methods of linking science observations. To this end, the RPC will provide the capability to integrate the software components and tools needed to evaluate the use of a wide variety of current and future NASA sensors, numerical models, and research results, model outputs, and knowledge, collectively referred to as "resources". It is assumed that the resources are geographically distributed, and thus RPC will provide the support for the location transparency of the resources. The RPC system requires providing support for: (1) discovery, semantic understanding, secure access and transport mechanisms for data products available from the known data provides; (2) data assimilation and geo- processing tools for all data transformations needed to match given data products to the model input requirements; (3) model management including catalogs of models and model metadata, and mechanisms for creation environments for model execution; and (4) tools for model output analysis and model benchmarking. The challenge involves developing a cyberinfrastructure for a coordinated aggregate of software, hardware and other technologies, necessary to facilitate RPC experiments, as well as human expertise to provide an integrated, "end-to-end" platform to support the RPC objectives. Such aggregation is to be achieved through a horizontal integration of loosely coupled services. The cyberinfrastructure comprises several software layers. At the bottom, the Grid fabric encompasses network protocols, optical networks, computational resources, storage devices, and sensors. At the top, applications use workload managers to coordinate their access to physical resources. Applications are not tightly bounded to a single physical resource. Instead, they bind dynamically to resources (i.e., they are provisioned) via a common grid infrastructure layer. For the RPC system, the

  16. Electronic marking of mathematics assignments using Microsoft Word 2007

    OpenAIRE

    Lowe, Tim; Mestel, Ben; Arrowsmith, Gaynor

    2008-01-01

    This paper describes on-going work within the Department of Mathematics and Statistics at The Open University to enable distance learning students to electronically submit assignments rich in mathematical notation and diagrams, and for those assignments to be marked and returned electronically by their tutor. A trial is currently underway of a prototype system that enables students to submit assignments in a range of electronic formats, which are then converted to Microsoft Word 2007 format t...

  17. REQUIREMENTS FOR SYSTEMS DEVELOPMENT LIFE CYCLE MODELS FOR LARGE-SCALE DEFENSE SYSTEMS

    Directory of Open Access Journals (Sweden)

    Kadir Alpaslan DEMIR

    2015-10-01

    Full Text Available TLarge-scale defense system projects are strategic for maintaining and increasing the national defense capability. Therefore, governments spend billions of dollars in the acquisition and development of large-scale defense systems. The scale of defense systems is always increasing and the costs to build them are skyrocketing. Today, defense systems are software intensive and they are either a system of systems or a part of it. Historically, the project performances observed in the development of these systems have been signifi cantly poor when compared to other types of projects. It is obvious that the currently used systems development life cycle models are insuffi cient to address today’s challenges of building these systems. Using a systems development life cycle model that is specifi cally designed for largescale defense system developments and is effective in dealing with today’s and near-future challenges will help to improve project performances. The fi rst step in the development a large-scale defense systems development life cycle model is the identifi cation of requirements for such a model. This paper contributes to the body of literature in the fi eld by providing a set of requirements for system development life cycle models for large-scale defense systems. Furthermore, a research agenda is proposed.

  18. 28 CFR 544.74 - Work assignment limitations.

    Science.gov (United States)

    2010-07-01

    ... appointment and promotion apply to all inmates, including those exempted from required participation in the... of the assignment. Local Federal Prison Industry (FPI) management may elect to retain the...

  19. Standards in chestnut coppice system: cultural heritage or coltural requirement?

    Directory of Open Access Journals (Sweden)

    Manetti MC

    2012-12-01

    Full Text Available Standards in chestnut coppice system: cultural heritage or coltural requirement? This paper aims at evaluating the role of standards in chestnut coppices from a biological and functional perspective. In addition to a detailed analysis of Italian regulations on the issue, the technical definition of the term is analysed: (i as for the functional role of standards; (ii to assess whether the required functions are technically necessary and are being actually performed. In this contex, the results of an experimental trial are reported. The goal of the trial were to assess the shoots’ parameters, the stand productivity, the dynamics of canopy cover in coppices with or without standards. In 2001, at harvesting operations in a coppice aged 30 with standards managed by the local community, two experimental plots 2500 m2 each were established. The two theses being compared were: simple coppice and coppixce with standards (100 standards per hectare. The released standards were qualified immediately after final harvesting. Sprouting ability, growth pattern and stool vitality were surveyed in March 2004 (at age 2, in May 2008 (at age 6 and in April 2010 (at age 8. First results highlighted the evidence of statistically significant differences between the two thesis. The high number of standards effected negatively both vitality and growth pattern of the stools. Simple coppice recorded a lower shoot mortality, a higher diametrical growth and canopy cover degree as well; the heigth growth was, on the opposite, significantly lower. These results, although referred to a limited lifespan (1/3 of the rotation time and to one site only, underline productive, ecological and environmental benefits and as a consequence suggest the widening of the experimental network and the development of new, more relevant and consistent rules, making acceptable the simple coppice as a possible silvicultural choice to be applied to chestnut coppices.

  20. A Use Case Methodology to Handle Conflicting Controller Requirements for Future Power Systems

    DEFF Research Database (Denmark)

    Heussen, Kai; Uslar, Mathias; Tornelli, Carlo

    2015-01-01

    This paper proposes a standards based requirements elicitation and analysis strategy tailored for smart grid control structure development. Control structures in electric power systems often span across several systems and stakeholders. Requirements elicitation for such control systems therefore ...

  1. Application Requirements for Middleware for Mobile and Pervasive Systems

    DEFF Research Database (Denmark)

    Christensen, Henrik Bærbak; Raatikainen, Kimmo; Nakajim, Tatsuo

    2002-01-01

    In this paper, we examine the requirements for future middleware to support mobile and pervasive applications and identify key research areas. We illustrate the research areas with requirements identified in two specific research projects concerning pervasive healthcare and home entertainment....

  2. Innovative reactor systems and requirements for structural materials

    International Nuclear Information System (INIS)

    The fast growing energy demand requires nuclear energy to play a role among other energy sources to satisfy future energy needs of mankind. Generation III light water reactors (LWRs) are anticipated to be built in large numbers to replace existing nuclear power plants or to augment the nuclear production capacity. Beyond the commercialization of best available light water reactor technologies, it is essential to start now the development of breakthrough technologies that will be needed to prepare the longer term future for nuclear power. These innovative systems include fast neutron reactors with a closed fuel cycle, high temperature reactors which could be used for process heat applications, accelerator driven systems or fusion reactors. Key technologies for such nuclear systems encompass high temperature structural materials, fast neutron resistant fuels and core materials, advanced fuel recycle processes with co-management of actinides, possibly including minor actinides, and specific reactor and power conversion technologies (intermediate heat-exchanger, turbo-machinery, high temperature electrolytic or thermo-chemical water splitting processes...). The paper will give a brief overview of various materials that are essential for above nuclear systems' feasibility and performance, such as ferritic/martensitic steels (9-12% Cr), nickel-based alloys (Haynes 230, Inconel 617...), oxide dispersion strengthened -ferritic/martensitic steels, and ceramics. The paper will also give an insight into the various natures of R and D needed on advanced materials, including fundamental research to investigate basic physical and chemical phenomena occurring in normal and accidental operating conditions, multi-scale modelling to predict macroscopic materials properties and to direct innovative research for improvements, lab-scale tests to characterise candidate materials mechanical properties and corrosion resistance, as well as component mock-up tests on technology loops to

  3. 40 CFR Table 8 to Subpart Vvvvvv... - Emission Limits and Compliance Requirements for Heat Exchange Systems

    Science.gov (United States)

    2010-07-01

    ... Requirements for Heat Exchange Systems 8 Table 8 to Subpart VVVVVV of Part 63 Protection of Environment... of Part 63—Emission Limits and Compliance Requirements for Heat Exchange Systems As required in § 63.11499, you must comply with the requirements for heat exchange systems as shown in the following...

  4. Fuel cell systems for passenger cars - opportunities and requirements

    Energy Technology Data Exchange (ETDEWEB)

    Tachtler, J. [BMW, Munich (Germany); Bourne, C. [Rover Group, Coventry (United Kingdom)

    1996-12-31

    From the point of view of energy density, handling and economy, present-day motor fuels are superior to all known alternatives. The internal combustion engine powered by them satisfies the requirements of customers to an excellent degree. The search for alternatives can therefore only be justified if emissions can be avoided totally and non-fossil primary energy sources can be used or at least partially our dependence on mineral oil can be reduced. What was long suspected has been increasingly confirmed, not least by developments at BMW: electricity (stored in batteries) and hydrogen offer the best prerequisites for achieving these goals in the long term. These forms of energy can be produced in sufficient quantities and with relatively little effect on the environment. They promise to produce an absolute minimum of pollutants when used in vehicles. Natural gas, which is very similar to hydrogen, and hybrid systems, that would compensate for battery risks, could perform a valuable function in the transitional phase.

  5. A novel way of amino acid-specific assignment in {sup 1}H-{sup 15}N HSQC spectra with a wheat germ cell-free protein synthesis system

    Energy Technology Data Exchange (ETDEWEB)

    Morita, Eugene Hayato, E-mail: ehmorita@dpc.ehime-u.ac.jp; Shimizu, Masato [Ehime University, Division of Gene Research, Department of Molecular Science, Integrated Center for Science (Japan); Ogasawara, Tomio; Endo, Yaeta; Tanaka, Rikou; Kohno, Toshiyuki [Mitsubishi Kagaku Institute of Life Sciences (MITILS) (Japan)], E-mail: tkohno@ibra.ls.m-kagaku.co.jp

    2004-09-15

    For high-throughput protein structural analyses, it is indispensable to develop a reliable protein overexpression system. Although many protein overexpression systems, such as ones utilizing E. coli cells, have been developed, a lot of proteins functioning in solution still were synthesized as insoluble forms. Recently, a novel wheat germ cell-free protein synthesis system was developed, and many of such proteins were synthesized as soluble forms. This means that the applicability of this protein synthesis method to determination of the functional structures of soluble proteins. In our previous work, we synthesized {sup 15}N-labeled proteins with this wheat germ cell-free system, and confirmed this applicability on the basis of the strong similarity between the {sup 1}H-{sup 15}N HSQC spectra for native proteins and the corresponding ones for synthesized ones.In this study, we developed a convenient and reliable method for amino acid selective assignment in {sup 1}H-{sup 15}N HSQC spectra of proteins, using several inhibitors for transaminases and glutamine synthase in the process of protein synthesis. Amino acid selective assignment in {sup 1}H-{sup 15}N HSQC spectra is a powerful means to monitor the features of proteins, such as folding, intermolecular interactions and so on. This is also the first direct experimental evidence of the presence of active transaminases and glutamine synthase in wheat germ extracts.Abbreviation: HSQC - heteronuclear single quantum coherence spectroscopy.

  6. New Channel Assignment Method for Access Points in Wireless LANs

    Directory of Open Access Journals (Sweden)

    Mohammed Fawzi Al-Hunaity

    2011-11-01

    Full Text Available Wireless LANs topology communicates using radio frequencies. The number of these frequencies is limited and not enough to assign a special frequency for each Access Point, this means that the communication topology should use a e-use mechanism, which allows the system to assign the same frequency that assigned previously for another access point. In this paper, we suggest a method to assign frequency channels to access points in a Wireless LANs system. The goal of this paper is to reach the assignment that prevents interference between access points especially neighbor ones. We used Genetic Algorithm to work on this issue, it is considered as an Expert System and one of the main multi point search technique used in computing to solve optimization and search problems.

  7. Automated feedback generation for introductory programming assignments

    OpenAIRE

    Singh, Rishabh; Gulwani, Sumit; Solar-Lezama, Armando

    2013-01-01

    We present a new method for automatically providing feedback for introductory programming problems. In order to use this method, we need a reference implementation of the assignment, and an error model consisting of potential corrections to errors that students might make. Using this information, the system automatically derives minimal corrections to student's incorrect solutions, providing them with a measure of exactly how incorrect a given solution was, as well as feedback about what they...

  8. Optimal State Assignment for Finite State Machines

    OpenAIRE

    Micheli, Giovanni De; Brayton, Robert K.; Sangiovanni-Vincentelli, Alberto

    1985-01-01

    Computer-Aided synthesis of sequential functions of VLSI systems, such as microprocessor control units, must include design optimization procedures to yield area-effective circuits. We model sequential functions as deterministic synchronous Finite State Machines (FSM's), and we consider a regular and structured implementation by means of Programmable Logic Arrays (PLA's) and feedback registers. State assignment, i.e., binary encoding of the internal states of the finite state machine, affects...

  9. An eigenvalue/eigenvector assignment algorithm using output feedback

    Science.gov (United States)

    Mielke, R. R.; Liberty, S. R.

    1983-01-01

    An eigenvalue/eigenvector assignment algorithm using stationary output feedback is presented. The algorithm permits assignment of min (n, m + r - 1) eigenvalues and max (m-1, r-1) eigenvectors, where n, m, r refer to the system state, input and output dimensions, respectively. An example is given to illustrate the design procedures.

  10. 40 CFR 63.1085 - What are the general requirements for heat exchange systems?

    Science.gov (United States)

    2010-07-01

    ... heat exchange systems? 63.1085 Section 63.1085 Protection of Environment ENVIRONMENTAL PROTECTION... Exchange Systems and Waste Operations Heat Exchange System Requirements § 63.1085 What are the general requirements for heat exchange systems? Unless you meet one of the requirements for exemptions in §...

  11. 46 CFR 153.404 - Standards for containment systems having required closed gauges.

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 5 2010-10-01 2010-10-01 false Standards for containment systems having required closed... Design and Equipment Cargo Gauging Systems § 153.404 Standards for containment systems having required closed gauges. When Table 1 requires a cargo's containment system to have a closed gauge, the...

  12. 46 CFR 153.406 - Standards for containment systems having required restricted gauges.

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 5 2010-10-01 2010-10-01 false Standards for containment systems having required... MATERIALS Design and Equipment Cargo Gauging Systems § 153.406 Standards for containment systems having required restricted gauges. When Table 1 requires a cargo's containment system to have a restricted...

  13. Pediatric Online Evidence-Based Medicine Assignment Is a Novel Effective Enjoyable Undergraduate Medical Teaching Tool

    Science.gov (United States)

    Kotb, Magd A.; Elmahdy, Hesham Nabeh; Khalifa, Nour El Deen Mahmoud; El-Deen, Mohamed Hamed Nasr; Lotfi, Mohamed Amr N.

    2015-01-01

    Abstract Evidence-based medicine (EBM) is delivered through a didactic, blended learning, and mixed models. Students are supposed to construct an answerable question in PICO (patient, intervention, comparison, and outcome) framework, acquire evidence through search of literature, appraise evidence, apply it to the clinical case scenario, and assess the evidence in relation to clinical context. Yet these teaching models have limitations especially those related to group work, for example, handling uncooperative students, students who fail to contribute, students who domineer, students who have personal conflict, their impact upon progress of their groups, and inconsistent individual acquisition of required skills. At Pediatrics Department, Faculty of Medicine, Cairo University, we designed a novel undergraduate pediatric EBM assignment online system to overcome shortcomings of previous didactic method and aimed to assess its effectiveness by prospective follow-up during academic years 2012 to 2013 and 2013 to 2014. The novel web-based online interactive system was tailored to provide sequential single and group assignments for each student. Single assignment addressed a specific case scenario question, while group assignment was teamwork that addressed different questions of same case scenario. Assignment comprised scholar content and skills. We objectively analyzed students’ performance by criterion-based assessment and subjectively by anonymous student questionnaire. A total of 2879 were enrolled in 5th year Pediatrics Course consecutively, of them 2779 (96.5%) logged in and 2554 (88.7%) submitted their work. They were randomly assigned to 292 groups. A total of 2277 (89.15%) achieved ≥80% of total mark (4/5), of them 717 (28.1%) achieved a full mark. A total of 2178 (85.27%) and 2359 (92.36%) made evidence-based conclusions and recommendations in single and group assignment, respectively (P < 0.001). A total of 1102 (43.1%) answered student questionnaire

  14. The required dose of imaging systems - nuclear medicine

    International Nuclear Information System (INIS)

    The required dose of imaging systems in nuclear medicine is based upon the statistical properties of radioactive decay. In contrast to the absorbed dose, the radioactivity can be directly and easily measured. The International Commission on Radiological Protection (ICRP) has developed the concept of effective dose. Based on this concept, radiation exposure by nuclear medicine and radiodiagnostic procedures can be compared to the natural radiation burden. In addition, the hypothetical risk associated with exposure to ionizing radiation can be estimated and compared to that in daily life. Radiation exposure in nuclear medicine procedures including PET remain within the limits of annual natural radiation exposure (1-6 mSv). The overall risk of any diagnostic procedure employing ionizing radiation in radiology appears to be negligible. The activity used for procedures in nuclear medicine is a compromise between radiation safety and image quality. A recent representative evaluation revealed that the average activity used for nuclear medicine procedures in Germany is lower than in other European states. While for most adult procedures a standard dose is given, the accepted method for children is the weight method. Any procedure employing ionizing radiation is usually performed only if alternative diagnostic imaging modalities sich as ultrasound and MRI cannot answer a specific test question appropriately. In addition to the latter, there are several ways to minimize radiation exposure. The most important way of assuring quality in any procedure is a strong quality-control program. Furthermore, comprehensive knowledge encompassing the indications for a study, the technical aspects of its acquisition and processing, and the final interpretation of its results are of great importance. Finally, it is known that prolonged data acquisition will result in improved image quality: however, this is clearly limited by the acceptance of the patient. (orig.)

  15. Who Benefits from Homework Assignments?

    Science.gov (United States)

    Ronning, Marte

    2011-01-01

    Using Dutch data on pupils in elementary school this paper is the first empirical study to analyze whether assigning homework has a heterogeneous impact on pupil achievement. Addressing potential biases by using a difference-in-difference approach, I find that the test score gap is larger in classes where everybody gets homework than in classes…

  16. Assigning agents to a line

    DEFF Research Database (Denmark)

    Hougaard, Jens Leth; Moreno-Ternero, Juan D.; Østerdal, Lars Peter Raahave

    2014-01-01

    minimizing modification of the classic random priority method to solve this class of problems. We also provide some logical relations in our setting among standard axioms in the literature on assignment problems, and explore the robustness of our results to several extensions of our setting....

  17. Probabilistic analysis of power assignments

    NARCIS (Netherlands)

    Graaf, de Maurits; Manthey, Bodo

    2014-01-01

    A fundamental problem for wireless ad hoc networks is the assignment of suitable transmission powers to the wireless devices such that the resulting communication graph is connected. The goal is to minimize the total transmit power in order to maximize the life-time of the network. Our aim is a prob

  18. General review of quality assurance system requirements. The utility or customer requirement

    International Nuclear Information System (INIS)

    What are the customer's Quality Assurance requirements and how does he convey these to his contractor, or apply them to himself. Many documents have been prepared mostly by countries with high technology availability and it is significant to note that many of the documents, particularly those of the United States of America, were prepared for nuclear safety related plant, but the logic of these documents equally applied to heavy engineering projects that are cost effective, and this is the current thinking and practice within the CEGB (Central Electricity Generating Board). Some documents have legislative backing, others rely on contractual disciplines, but they all appear to repeat the same basic requirements, so why does one continue to write more documents. The basic problem is that customers have to satisfy differing national legislative, economic and commercial requirements and, like all discerning customers, wish to reserve the right to satisfy their own needs, which are very often highly specialized. The CEGB are aware of this problem and are actively co-operating with most of the national and international authorities who are leading in this field, with a view to obtaining compatibility of requirements, but now there still remains the problem of satisfying national custom and practice. (author)

  19. MONTE: An automated Monte Carlo based approach to nuclear magnetic resonance assignment of proteins

    Energy Technology Data Exchange (ETDEWEB)

    Hitchens, T. Kevin; Lukin, Jonathan A.; Zhan Yiping; McCallum, Scott A.; Rule, Gordon S. [Carnegie Mellon University, Department of Biological Sciences (United States)], E-mail: rule@andrew.cmu.edu

    2003-01-15

    A general-purpose Monte Carlo assignment program has been developed to aid in the assignment of NMR resonances from proteins. By virtue of its flexible data requirements the program is capable of obtaining assignments of both heavily deuterated and fully protonated proteins. A wide variety of source data, such as inter-residue scalar connectivity, inter-residue dipolar (NOE) connectivity, and residue specific information, can be utilized in the assignment process. The program can also use known assignments from one form of a protein to facilitate the assignment of another form of the protein. This attribute is useful for assigning protein-ligand complexes when the assignments of the unliganded protein are known. The program can be also be used as an interactive research tool to assist in the choice of additional experimental data to facilitate completion of assignments. The assignment of a deuterated 45 kDa homodimeric Glutathione-S-transferase illustrates the principal features of the program.

  20. Requirement analysis for autonomous systems and intelligent agents in future Danish electric power systems

    DEFF Research Database (Denmark)

    Saleem, Arshad; Lind, Morten

    2010-01-01

    plans. The second part formulates a flexible control architecture for electric power systems with very high penetration of distributed generation. This control architecture is based upon the requirements identified in the first part. We also present development of a software framework to test...

  1. Specification requirements summary for the Brayton Isotope Power System (BIPS) Ground Demonstration System (GDS)

    Energy Technology Data Exchange (ETDEWEB)

    Thompson, E.E.

    1976-02-10

    This document provides a summary of the required program specifications and procedures for the ERDA Phase I Brayton Isotope Power System (BIPS) Program. Also included are document definitions, descriptions, and formats, and a listing of commonly used abbreviations. This document is intended to be used as a guide in document preparation and control.

  2. Navigation systems requirement analysis for the Aeroassist Flight Experiment (AFE)

    Science.gov (United States)

    Huang, K. H.; Chang, Ho-Pen; Wells, Eugene M.

    1990-01-01

    Navigation requirements for Aeroassist Flight Experiment (AFE) spacecraft passing through the earth's atmosphere have been studied using a 6-DOF dynamics model, an Inertial Measurement Unit model, a baseline AFE aeropass flight guidance logic, and a baseline AFE aeropass control model. The goal of this study is to determine, in a statistical sense, how much flight path angle error can be tolerated at Entry Interface (EI) and still have acceptable delta-V requirements at exit to position the AFE spacecraft for recovery. Assuming there is fuel available to produce 370 ft/sec of delta-V at atmospheric exit, a 3-sigma standard deviation in flight path angle error of 0.04 degree at EI would result in a 98 percent probability of mission success. In addition to the required delta-V at exit, other aeropass parameters such as maximum aeroheating rate, fuel consumption, and the science requirements affecting mission success are also investigated.

  3. Detailed requirements document for the Interactive Financial Management System (IFMS), volume 1

    Science.gov (United States)

    Dodson, D. B.

    1975-01-01

    The detailed requirements for phase 1 (online fund control, subauthorization accounting, and accounts receivable functional capabilities) of the Interactive Financial Management System (IFMS) are described. This includes information on the following: systems requirements, performance requirements, test requirements, and production implementation. Most of the work is centered on systems requirements, and includes discussions on the following processes: resources authority, allotment, primary work authorization, reimbursable order acceptance, purchase request, obligation, cost accrual, cost distribution, disbursement, subauthorization performance, travel, accounts receivable, payroll, property, edit table maintenance, end-of-year, backup input. Other subjects covered include: external systems interfaces, general inquiries, general report requirements, communication requirements, and miscellaneous. Subjects covered under performance requirements include: response time, processing volumes, system reliability, and accuracy. Under test requirements come test data sources, general test approach, and acceptance criteria. Under production implementation come data base establishment, operational stages, and operational requirements.

  4. Firefighter safety for PV systems: Overview of future requirements and protection systems

    DEFF Research Database (Denmark)

    Spataru, Sergiu; Sera, Dezso; Blaabjerg, Frede;

    2013-01-01

    for operators during maintenance or fire-fighting. One of the solutions is individual module shutdown by short-circuiting or disconnecting each PV module from the PV string. However, currently no standards have been adopted either for implementing or testing these methods, or doing an evaluation of...... the module shutdown procedures. This paper gives an overview on the most recent fire - and firefighter safety requirements for PV systems, with focus on system and module shutdown systems. Several solutions are presented, analyzed and compared by considering a number of essential characteristics...

  5. Towards Requirements in Systems Engineering for Aerospace IVHM Design

    Data.gov (United States)

    National Aeronautics and Space Administration — Health management (HM) technologies have been employed for safety critical system for decades, but a coherent systematic process to integrate HM into the system...

  6. 17 CFR 242.303 - Record preservation requirements for alternative trading systems.

    Science.gov (United States)

    2010-04-01

    ... requirements for alternative trading systems. 242.303 Section 242.303 Commodity and Securities Exchanges... REQUIREMENTS FOR SECURITY FUTURES Regulation Ats-Alternative Trading Systems § 242.303 Record preservation requirements for alternative trading systems. (a) To comply with the condition set forth in paragraph (b)(9)...

  7. Performance Requirements for the Double Shell Tank (DST) System Phase 1

    International Nuclear Information System (INIS)

    This document describes the performance requirements for the Double-Shell Tank (DST) System. These requirements reflect the Case 3, Project Planning Case from the Tank Waste Remediation System Operation and Utilization Plan, Revision 1. These requirements, in turn, will be incorporated into a specification for the DST System

  8. A systematic requirements engineering approach for decision support systems

    OpenAIRE

    Garcia Martinez, Stephany

    2014-01-01

    Decision Support Systems have emerged as a dominant technology capable to integrate heterogeneous sources into an analytical fashion to facilitate and provide a better decision-making process. Successful projects of Decision Support Systems implementation have confirmed a highlevel of user satisfaction and return on investment. Despite the potential of these systems, several surveys have indicated that the failure rate of Decision Support System projects in case studies and literature is cons...

  9. Reverse Engineering Tool Requirements for Real Time Embedded Systems

    OpenAIRE

    Govin, Brice; Anquetil, Nicolas; Etien, Anne; Monegier Du Sorbier, Arnaud; Ducasse, Stéphane

    2015-01-01

    For more than three decades, reverse engineering has been a major issue in industry wanting to capitalise on legacy systems. Lots of companies have developed reverse engineering tools in order to help developers in their work. However, those tools have been focusing on traditional information systems. Working on a time critical embedded system we found that the solutions available focus either on software behaviour structuring or on data extraction from the system. None of them seem to be cle...

  10. Heuristic for Task-Worker Assignment with Varying Learning Slopes

    Directory of Open Access Journals (Sweden)

    Wipawee Tharmmaphornphilas

    2010-04-01

    Full Text Available Fashion industry has variety products, so the multi-skilled workers are required to improve flexibility in production and assignment. Generally the supervisor will assign task to the workers based on skill and skill levels of worker. Since in fashion industry new product styles are launched more frequently and the order size tends to be smaller, the workers always learn when the raw material and the production process changes. Consequently they require less time to produce the succeeding units of a task based on their learning ability. Since the workers have both experience and inexperience workers, so each worker has different skill level and learning ability. Consequently, the assignment which assumed constant skill level is not proper to use. This paper proposes a task-worker assignment considering worker skill levels and learning abilities. Processing time of each worker changes along production period due to a worker learning ability. We focus on a task-worker assignment in a fashion industry where tasks are ordered in series; the number of tasks is greater than the number of workers. Therefore, workers can perform multiple assignments followed the precedence restriction as an assembly line balancing problem. The problem is formulated in an integer linear programming model with objective to minimize makespan. A heuristic is proposed to determine the lower bound (LB and the upper bound (UB of the problem and the best assignment is determined. The performance of the heuristic method is tested by comparing quality of solution and computational time to optimal solutions.

  11. Self-Paced Advanced Individual Training (AIT) and Duty Assignment Procedures.

    Science.gov (United States)

    Hunter, Harold; Wagner, Harold

    A study was made to (a) describe how self-paced Military Occupational Specialty (MOS) training affects the Army assignment system; (b) identify ways the existing assignment system can accommodate individualized instruction; and (c) suggest modifications to the assignment system to provide better integration of self-paced training with assignment…

  12. Who benefits from homework assignments?

    OpenAIRE

    Rønning, Marte

    2008-01-01

    Abstract: Using Dutch data on pupils in elementary school this paper is the first empirical study that analyzes whether assigning homework has an heterogeneous impact on pupil achievement. Addressing potential biases that arise from unobserved school quality, pupil selection by exploiting different methods, I find that the test score gap is larger in classes where everybody gets homework than in classes where nobody gets homework. More precisely pupils belonging to the upper part of the so...

  13. Reproducibility of the MS-2 system for identification of members of the family Enterobacteriaceae: a collaborative study with blindly assigned reference stains.

    OpenAIRE

    Yamane, N; Kato, H.; Saitoh, Y.; Mukojima, T; K. Matsuoka

    1984-01-01

    The reproducibility of identification and biochemical reactions for five different reference organisms of Enterobacteriaceae; Proteus vulgaris, Klebsiella pneumoniae, Escherichia coli, Serratia marcescens, and Enterobacter cloacae, were evaluated using the updated MS-2 system software (Abbott Laboratories, Diagnostic Division, Irving, Tex.) in a collaborative study involving 11 laboratories. When a total of 220 randomly coded test organisms were blindly examined, the MS-2 system correctly ide...

  14. Long term uranium requirements of different reactor systems

    International Nuclear Information System (INIS)

    Due to limited assured and possible uranium reserves in our country, to secure the long term requirements in uranium is one of the main problems of nuclear power development. Cumulative uranium requirements have been calculated for long term nuclear power construction program of 26.000 MWe in the period 1990 - 2000, for several reactor strategies which start with PWR or HWR reactors and finish with introduction of fast breeders in years 2000, 2005 and 2010. In some cases intermediate phase of plutonium recycling, respectively U-Th fuel cycles is assumed following the 'once through' HWR fuel cycles. (author)

  15. Tank waste remediation system high-level waste vitrification system development and testing requirements

    International Nuclear Information System (INIS)

    This document provides the fiscal year (FY) 1995 recommended high-level waste melter system development and testing (D and T) requirements. The first phase of melter system testing (FY 1995) will focus on the feasibility of high-temperature operation of recommended high-level waste melter systems. These test requirements will be used to establish the basis for defining detailed testing work scope, cost, and schedules. This document includes a brief summary of the recommended technologies and technical issues associated with each technology. In addition, this document presents the key D and T activities and engineering evaluations to be performed for a particular technology or general melter system support feature. The strategy for testing in Phase 1 (FY 1995) is to pursue testing of the recommended high-temperature technologies, namely the high-temperature, ceramic-lined, joule-heated melter, referred to as the HTCM, and the high-frequency, cold-wall, induction-heated melter, referred to as the cold-crucible melter (CCM). This document provides a detailed description of the FY 1995 D and T needs and requirements relative to each of the high-temperature technologies

  16. Functional requirements of computer systems for the U.S. Geological Survey, Water Resources Division, 1988-97

    Science.gov (United States)

    Hathaway, R.M.; McNellis, J.M.

    1989-01-01

    Investigating the occurrence, quantity, quality, distribution, and movement of the Nation 's water resources is the principal mission of the U.S. Geological Survey 's Water Resources Division. Reports of these investigations are published and available to the public. To accomplish this mission, the Division requires substantial computer technology to process, store, and analyze data from more than 57,000 hydrologic sites. The Division 's computer resources are organized through the Distributed Information System Program Office that manages the nationwide network of computers. The contract that provides the major computer components for the Water Resources Division 's Distributed information System expires in 1991. Five work groups were organized to collect the information needed to procure a new generation of computer systems for the U. S. Geological Survey, Water Resources Division. Each group was assigned a major Division activity and asked to describe its functional requirements of computer systems for the next decade. The work groups and major activities are: (1) hydrologic information; (2) hydrologic applications; (3) geographic information systems; (4) reports and electronic publishing; and (5) administrative. The work groups identified 42 functions and described their functional requirements for 1988, 1992, and 1997. A few new functions such as Decision Support Systems and Executive Information Systems, were identified, but most are the same as performed today. Although the number of functions will remain about the same, steady growth in the size, complexity, and frequency of many functions is predicted for the next decade. No compensating increase in the Division 's staff is anticipated during this period. To handle the increased workload and perform these functions, new approaches will be developed that use advanced computer technology. The advanced technology is required in a unified, tightly coupled system that will support all functions simultaneously

  17. Special requirements of electronic health record systems in pediatrics.

    Science.gov (United States)

    Spooner, S Andrew

    2007-03-01

    Some functions of an electronic health record system are much more important in providing pediatric care than in adult care. Pediatricians commonly complain about the absence of these "pediatric functions" when they are not available in electronic health record systems. To stimulate electronic health record system vendors to recognize and incorporate pediatric functionality into pediatric electronic health record systems, this clinical report reviews the major functions of importance to child health care providers. Also reviewed are important but less critical functions, any of which might be of major importance in a particular clinical context. The major areas described here are immunization management, growth tracking, medication dosing, data norms, and privacy in special pediatric populations. The American Academy of Pediatrics believes that if the functions described in this document are supported in all electronic health record systems, these systems will be more useful for patients of all ages. PMID:17332220

  18. Algorithmic requirements for swarm intelligence in differently coupled collective systems

    International Nuclear Information System (INIS)

    Swarm systems are based on intermediate connectivity between individuals and dynamic neighborhoods. In natural swarms self-organizing principles bring their agents to that favorable level of connectivity. They serve as interesting sources of inspiration for control algorithms in swarm robotics on the one hand, and in modular robotics on the other hand. In this paper we demonstrate and compare a set of bio-inspired algorithms that are used to control the collective behavior of swarms and modular systems: BEECLUST, AHHS (hormone controllers), FGRN (fractal genetic regulatory networks), and VE (virtual embryogenesis). We demonstrate how such bio-inspired control paradigms bring their host systems to a level of intermediate connectivity, what delivers sufficient robustness to these systems for collective decentralized control. In parallel, these algorithms allow sufficient volatility of shared information within these systems to help preventing local optima and deadlock situations, this way keeping those systems flexible and adaptive in dynamic non-deterministic environments

  19. Video requirements plan for the HMT equipment removal system

    International Nuclear Information System (INIS)

    This document is the plan defining the video coverage requirements for the equipment removal event of the Hydrogen Mitigation Test (HMT) mixer pump currently installed in high level nuclear waste storage Tank 241-SY-101. When the mixer pump fails the removal and installation of a spare pump will be a time critical event. Since the success of the HMT mixer pump has resolved the DOE safety issue it is absolutely essential that mixing be restored to the tank in a short as time possible. Therefore, the removal of the failed pump and the installation of the spare pump must be anticipated and planned well in advance. The removal, containment, transporting, and storage of the failed pump is a very complex and hazardous task. The successful completion of this task will require careful planning and monitoring. Certain events, during the removal and subsequent installation of the new pump, will require video observation and storage for safety, documenting, training, and promotional use. Furthermore, certain events will require close monitoring and observation by the event directors and key supervisory personnel for the execution of specific tasks during the equipment removal event

  20. Diversity requirements for safety critical software-based automation systems

    International Nuclear Information System (INIS)

    System vendors nowadays propose software-based systems even for the most critical safety functions in nuclear power plants. Due to the nature and mechanisms of influence of software faults new methods are needed for the safety and reliability evaluation of these systems. In the research project 'Programmable automation systems in nuclear power plants (OHA)' various safety assessment methods and tools for software based systems are developed and evaluated. This report first discusses the (common cause) failure mechanisms in software-based systems, then defines fault-tolerant system architectures to avoid common cause failures, then studies the various alternatives to apply diversity and their influence on system reliability. Finally, a method for the assessment of diversity is described. Other recently published reports in OHA-report series handles the statistical reliability assessment of software based (STUK-YTO-TR 119), usage models in reliability assessment of software-based systems (STUK-YTO-TR 128) and handling of programmable automation in plant PSA-studies (STUK-YTO-TR 129)

  1. 14 CFR 417.303 - Command control system requirements.

    Science.gov (United States)

    2010-01-01

    ... system must transmit a command signal that has the radio frequency characteristics and power needed for... frequency signal and radiated power density that each command destruct system needs to activate during... the signal spectrum power used in the link analysis of § 417.309(f); and (5) Not transmit...

  2. 48 CFR 252.215-7002 - Cost estimating system requirements.

    Science.gov (United States)

    2010-10-01

    ... applied; (2) Produces verifiable, supportable, and documented cost estimates that are an acceptable basis... the cost estimating system to the ACO on a timely basis. (e) Estimating system deficiencies. (1) The... historical costs, and other analyses used to generate cost estimates. (b) General. The Contractor...

  3. 5 CFR 9901.405 - Performance management system requirements.

    Science.gov (United States)

    2010-01-01

    ... 5 Administrative Personnel 3 2010-01-01 2010-01-01 false Performance management system... DEFENSE NATIONAL SECURITY PERSONNEL SYSTEM (NSPS) Performance Management § 9901.405 Performance management... performance management system— (1) Provides for the appraisal of the performance of each employee annually;...

  4. System Design Description and Requirements for Modeling the Off-Gas Systems for Fuel Recycling Facilities

    Energy Technology Data Exchange (ETDEWEB)

    Daryl R. Haefner; Jack D. Law; Troy J. Tranter

    2010-08-01

    This document provides descriptions of the off-gases evolved during spent nuclear fuel processing and the systems used to capture the gases of concern. Two reprocessing techniques are discussed, namely aqueous separations and electrochemical (pyrochemical) processing. The unit operations associated with each process are described in enough detail so that computer models to mimic their behavior can be developed. The document also lists the general requirements for the desired computer models.

  5. 33 CFR 96.240 - What functional requirements must a safety management system meet?

    Science.gov (United States)

    2010-07-01

    ... a safety management system meet? 96.240 Section 96.240 Navigation and Navigable Waters COAST GUARD... requirements must a safety management system meet? The functional requirements of a safety management system... vessel's safety management system, and the ISM Code; (e) Procedures to prepare for and respond...

  6. Tank waste remediation system safety structures, systems, and components: requirements and characteristics

    Energy Technology Data Exchange (ETDEWEB)

    Hicks, D.F.

    1996-09-30

    Safety Systems, Structures, and Components (SSCs) have been identified from hazard and accident analyses. These analyses were performed to support the Tank Waste Remediation System (TWRS) Final Safety Analysis Report (FSAR) and Basis for Interim Operation (BIO). The text identifies and evaluates the SSCs, and their supporting SSC`s, to show that they either prevent the occurrence of the accident or, mitigate the consequences of the accident to below the acceptance guidelines. The requirements for the SSC`s to fulfill these tasks are described.

  7. Understanding the Usage and Requirements of the Photo Tagging System

    OpenAIRE

    Malik, Aqdas; Marko, Nieminen

    2014-01-01

    The amount of personal photos is massively increasing and managing them effectively and efficiently requires new approaches and practices. This study analyses the users’ needs and their behaviour towards photo tagging in the context of a personal photo repository. Our results are from a qualitative study with 15 users. Study methods include a questionnaire and a task analy-sis approach in which we analyse and evaluate practices around semi-automated photo tagging. In the task analysis, we des...

  8. Spacecraft Thermal Control System Not Requiring Power Project

    Data.gov (United States)

    National Aeronautics and Space Administration — The thermal management of spacecraft would be enhanced by dynamic control over surface emissivity in the mid-infrared. In this SBIR program, Triton Systems proposes...

  9. Software requirements specification for the program analysis and control system risk management module

    International Nuclear Information System (INIS)

    TWR Program Analysis and Control System Risk Module is used to facilitate specific data processes surrounding the Risk Management program of the Tank Waste Retrieval environment. This document contains the Risk Management system requirements of the database system

  10. 40 CFR 267.198 - What are the general operating requirements for my tank systems?

    Science.gov (United States)

    2010-07-01

    ... system if they could cause the tank, its ancillary equipment, or the containment system to rupture, leak... comply with the requirements of § 267.200 if a leak or spill occurs in the tank system....

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

    Science.gov (United States)

    2012-02-14

    ...--Quality Assurance Requirements for Continuous Opacity Monitoring Systems at Stationary Sources Docket, EPA... entities. This action establishes quality assurance procedures for continuous opacity monitoring systems... action simply establishes quality assurance procedures for continuous opacity monitoring systems used...

  12. Computation of launch vehicle system requirements using hybrid computer.

    Science.gov (United States)

    Ryan, R. S.; Ernsberger, G. R.; Long, G. S.

    1973-01-01

    Formulating an adequate statistical statement concerning space vehicle dynamic states requires the combination of the statistics of the environment and the vehicle's basic parameters. The basic ingredient of the environment for the Space Shuttle launch phase is the winds, which are represented by an ensemble of measured winds (150/month), which today constitute the best statistical representation. The problem treated in this paper then becomes twofold: (1) how can the vehicle response be analyzed using wind ensembles, and (2) how can the vehicle parameter variations be treated in conjunction with wind ensembles.

  13. Requirements on Clinical Trial Management Systems for Academic Site Management Organizations.

    Science.gov (United States)

    Schöbel, Martin; Stäubert, Sebastian; Löbe, Matthias; Meinel, Kirsti; Winter, Alfred

    2016-01-01

    As a part of the introduction of a Clinical Trial Management System (CTMS) for an Academic Site Management Organization (SMO) we had to determine the requirements such a system has to meet. By performing extensive Requirements Engineering, we aimed at raising the success of the future system and the user satisfaction. Investigations revealed the existence of TORE (Task and Object-oriented Requirements Engineering), a task-driven approach for determining requirements on user interface- and information-intensive systems. In this paper, we present an adoption of this method for our purposes, resulting in a reasonable list of requirements for CTMS acquisition. PMID:27577390

  14. 78 FR 55060 - Proposed Information Collection; Comment Request; Expanded Vessel Monitoring System Requirement...

    Science.gov (United States)

    2013-09-09

    ... Vessel Monitoring System Requirement in the Pacific Coast Groundfish Fishery AGENCY: National Oceanic and... commercial fishing vessels are required to install and use a vessel monitoring system (VMS) that... inactive vessels or vessels fishing outside the monitored area. The vessels are also required to...

  15. 40 CFR 63.11499 - What are the standards and compliance requirements for heat exchange systems?

    Science.gov (United States)

    2010-07-01

    ... subpart. (b) For equipment that meets Current Good Manufacturing Practice (CGMP) requirements of 21 CFR... requirements for heat exchange systems? 63.11499 Section 63.11499 Protection of Environment ENVIRONMENTAL... and compliance requirements for heat exchange systems? (a) If the cooling water flow rate in your...

  16. Decision Support Systems - Technical Prerequisites and Military Requirements

    CERN Document Server

    Tolk, Andreas

    2010-01-01

    Decision Support Systems in the sense of online alternative course of action (ACAO) development and analysis as well as tools for online Development of Doctrine and Tactics Techniques, and Procedures (DTTP) for support to operations make it possible to evaluate and forecast the command and control processes and the performance capabilities of the friendly and enemy forces and other decision relevant factors, support the military commander (brigade and higher) and his staff in their headquarter by increasing their ability to identify own opportunities, support all phases of the command and control process, use computer based, automatic and closed models, that can be adapted to the current situation. Objective of the paper is to present the results of studies conducted in Germany on behalf of the German Ministry of Defense with the objective to work out the conceptual basis for decision support systems and to evaluate, how this technique will influence the command and control system of the army of the federal a...

  17. A requirements specification for a software design support system

    Science.gov (United States)

    Noonan, Robert E.

    1988-01-01

    Most existing software design systems (SDSS) support the use of only a single design methodology. A good SDSS should support a wide variety of design methods and languages including structured design, object-oriented design, and finite state machines. It might seem that a multiparadigm SDSS would be expensive in both time and money to construct. However, it is proposed that instead an extensible SDSS that directly implements only minimal database and graphical facilities be constructed. In particular, it should not directly implement tools to faciliate language definition and analysis. It is believed that such a system could be rapidly developed and put into limited production use, with the experience gained used to refine and evolve the systems over time.

  18. Two-sided matching in hierarchical organizations: an application for the assignment of military personnel

    OpenAIRE

    Robards, Paul Anthony

    2011-01-01

    Many large organizations rely on manual assignment processes, despite the theory of bounded rationality indicating that time and cognitive constraints would limit the quality of assignments. This research used participant experiments to explore the effect of information load on assignment quality: participants, motivated by induced value theory, performed the role of decision makers and information load was identified by the number of personnel requiring assignment and the number of attrib...

  19. 30 CFR 774.17 - Transfer, assignment, or sale of permit rights.

    Science.gov (United States)

    2010-07-01

    ... SYSTEMS UNDER REGULATORY PROGRAMS REVISION; RENEWAL; TRANSFER, ASSIGNMENT, OR SALE OF PERMIT RIGHTS; POST... approval of the transfer, assignment, or sale of permit rights. (2) Advertise the filing of the...

  20. Mirror quality required by the Antares laser system

    International Nuclear Information System (INIS)

    The Antares laser system is a large (100 kJ) CO2 pulse laser operating at 10.6 μm. The system has 72 beam lines, each with an aperture of 900 cm2. The system will be composed primarily of large copper-faced mirrors whose principal dimensions range up to 65 cm. These mirrors will be single-point diamond turned (SPOT) at the Y-12 facility of Union Carbide Corporation in Oak Ridge, Tennessee. we have had to develop surface quality specifications for these mirrors. These specifications were initially set at 50 nm peak-to-valley (p-v) surface error for the microsurface over 0.5-mm areas and 500 nm (p-v) over the whole mirror surface. An attempt has been made to refine these specifications to a more physically meaningful set based on the performance of the system. The optical specification for Antares is that 80% of the energy from each beam should be deliverable inside a 400-μm circle. The diffraction limited focal spot is 160 μm across, so small amounts of low spatial frequency wavefront aberrations are acceptable. This is the figure error and can be represented by a best-fit fourth-order polynomial. It is specified separately from the higher spatial frequency subfigure errors that diffract light out of the 400-μm circle

  1. 46 CFR 151.20-5 - Cargo system valving requirements.

    Science.gov (United States)

    2010-10-01

    ... will cause the quick closing shutoff valves to close in case of fire. Quick closing shutoff valves... penetrations are not applicable to nozzles at which pressure vacuum or safety relief valves are fitted. (a... conditions, every cargo piping system shall be provided with one of the following sets of control valves...

  2. ROMANIAN BANKING SYSTEM EVOLUTION AND BASEL II REQUIREMENTS

    Directory of Open Access Journals (Sweden)

    Mihaela NICOLAU

    2006-01-01

    Full Text Available Before 1989, Romanian Banking System was structured in the specific way of a centralized economy. Restructuring of the banking system took its first step at the end of 1990 when the newly- established bank, Banca Comercială Română, took over retail operations performed previously by the NBR. Simultaneously, some privately-owned banking companies were established and foreign banks’ branches were integrated into the domestic banking activity, the number of banks almost trebling. The unfriendly economic environment, the poor quality of bank managers and shareholders and cumbersome legal procedures led to an increase in tensions, the poor quality of credit portfolio representing the major difficulty of the banking sector. In the past years, NBR tried to control more thebanking activity by implementing international settlements. More over, since Romania is one of the European Union countries, it is absolutely necessary the harmonization of entire economic and financial system to EU regulations. The paper try to present the position of Romanian banking system in the framework of all these transformations.

  3. 40 CFR 63.104 - Heat exchange system requirements.

    Science.gov (United States)

    2010-07-01

    ... heat exchange system or at locations where the cooling water enters and exits each heat exchanger or... manufacturing process units. (iii) For samples taken at the entrance and exit of each heat exchanger or any... cooling water enters the individual heat exchanger or group of heat exchangers and the exit is the...

  4. NASA TSRV essential flight control system requirements via object oriented analysis

    Science.gov (United States)

    Duffy, Keith S.; Hoza, Bradley J.

    1992-01-01

    The objective was to analyze the baseline flight control system of the Transport Systems Research Vehicle (TSRV) and to develop a system specification that offers high visibility of the essential system requirements in order to facilitate the future development of alternate, more advanced software architectures. The flight control system is defined to be the baseline software for the TSRV research flight deck, including all navigation, guidance, and control functions, and primary pilot displays. The Object Oriented Analysis (OOA) methodology developed is used to develop a system requirement definition. The scope of the requirements definition contained herein is limited to a portion of the Flight Management/Flight Control computer functionality. The development of a partial system requirements definition is documented, and includes a discussion of the tasks required to increase the scope of the requirements definition and recommendations for follow-on research.

  5. Performance requirements for the double-shell tank system: Phase 1

    Energy Technology Data Exchange (ETDEWEB)

    Claghorn, R.D.

    1998-03-05

    This document establishes performance requirements for the double-shell tank system. These requirements, in turn, will be incorporated in the System Specification for the Double-Shell Tank System (Grenard and Claghorn 1998). This version of the document establishes requirements that are applicable to the first phase (Phase 1) of the Tank Waste Remediation System (TWRS) mission described in the TWRS Mission Analysis Report (Acree 1998). It does not specify requirements for either the Phase 2 mission or the double-shell tank system closure period.

  6. Requirements to a Norwegian national automatic gamma monitoring system

    DEFF Research Database (Denmark)

    Lauritzen, B.; Jensen, Per Hedemann; Nielsen, F.

    2005-01-01

    increments above the natural background levels. The study is based upon simplified deterministic calculations of the radiological consequences of generic nuclear accident scenarios. The density of gammamonitoring stations has been estimated from an analysis of the dispersion of radioactive materials over...... protective intervention measures should be detected by the system. Action levels for possibleintroduction of sheltering and precautionary foodstuff restrictions are derived in terms of ambient dose equivalent rate. For emergency situations where particulates contribute with only a small fraction of the total...

  7. Software Requirements for a System to Compute Mean Failure Cost

    Energy Technology Data Exchange (ETDEWEB)

    Aissa, Anis Ben [University of Tunis, Belvedere, Tunisia; Abercrombie, Robert K [ORNL; Sheldon, Frederick T [ORNL; Mili, Ali [New Jersey Insitute of Technology

    2010-01-01

    In earlier works, we presented a computational infrastructure that allows an analyst to estimate the security of a system in terms of the loss that each stakeholder. We also demonstrated this infrastructure through the results of security breakdowns for the ecommerce case. In this paper, we illustrate this infrastructure by an application that supports the computation of the Mean Failure Cost (MFC) for each stakeholder.

  8. Storage system requirements for grid supporting PV-power plants

    OpenAIRE

    Gavriluta, Catalin; Candela García, José Ignacio; Rocabert Delgado, Joan; Etxeberria Otadui, Ion; Rodríguez Cortés, Pedro

    2014-01-01

    Large penetration of renewable energy is currently attenuated by concerns regarding their impact on the controllability and reliability of the electrical system. As the inclusion of energy storage is to a great extent the solution to these issues, this paper proposes a methodology for approaching the calculation of the size of the energy storage to be connected to a PV power plant for providing inertia emulation, primary control, and the reduction of power fluctuation. A complete control stra...

  9. Medical device data systems and FDA regulation. Should medical device data systems require FDA clearance?

    Science.gov (United States)

    Kelley, Peter

    2010-01-01

    It is widely understood why medical devices need to be regulated by the FDA and other governing bodies. However medical software does not typically require the same level of regulation. Currently the FDA is investigating whether one type of medical software, Medical Device Data Systems (MDDS), should require FDA clearance because of the potential risk they impose when interconnected with medical devices. Hospitals are looking to implement MDDS because the technology allows nursing staff to spend more time on direct patient care and reduces charting errors. This article will explore the FDA's proposal and will review the possible risks and provide a rationale for why MDDS should be regulated by the FDA and why MDDS vendors should have the right level of quality and risk management procedures in place to ensure that they are developing and bringing to market the safest products possible. PMID:20677470

  10. ANALYTICAL SUPPORT OF REQUIREMENTS DEVELOPMENT FOR INTELLIGENT E-LEARNING SYSTEMS

    OpenAIRE

    Pishchukhina, O.

    2013-01-01

    The problems of analysis and modeling of requirements while development of e-learning systems with feedback are considered. Subject area of requirements development is determined, choice of CASE-tools for creating models from generated subject area is explained. Visual models of functional requirements and user requirements in the form of diagrams showing the development of behavior and the logical structure of the system are developed. Simulation models explain the events and the correspondi...

  11. Assignment Choice, Effort, and Assignment Completion: Does Work Ethic Predict Those Who Choose Higher-Effort Assignments?

    Science.gov (United States)

    Parkhurst, John T.; Fleisher, Matthew S.; Skinner, Christopher H.; Woehr, David J.; Hawthorn-Embree, Meredith L.

    2011-01-01

    After completing the Multidimensional Work-Ethic Profile (MWEP), 98 college students were given a 20-problem math computation assignment and instructed to stop working on the assignment after completing 10 problems. Next, they were allowed to choose to finish either the partially completed assignment that had 10 problems remaining or a new…

  12. 30 CFR 764.21 - Data base and inventory system requirements.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 3 2010-07-01 2010-07-01 false Data base and inventory system requirements... SURFACE COAL MINING OPERATIONS § 764.21 Data base and inventory system requirements. (a) The regulatory authority shall develop a data base and inventory system which will permit evaluation of whether...

  13. 40 CFR 141.520 - Is my system subject to the updated watershed control requirements?

    Science.gov (United States)

    2010-07-01

    ... watershed control requirements? 141.520 Section 141.520 Protection of Environment ENVIRONMENTAL PROTECTION... Filtration and Disinfection-Systems Serving Fewer Than 10,000 People Additional Watershed Control Requirements for Unfiltered Systems § 141.520 Is my system subject to the updated watershed...

  14. Treated effluent disposal system process control computer software requirements and specification

    International Nuclear Information System (INIS)

    The software requirements for the monitor and control system that will be associated with the effluent collection pipeline system known as the 200 Area Treated Effluent Disposal System is covered. The control logic for the two pump stations and specific requirements for the graphic displays are detailed

  15. 40 CFR Table 6 to Subpart Hhhhh of... - Requirements for Heat Exchange Systems

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 13 2010-07-01 2010-07-01 false Requirements for Heat Exchange Systems... Manufacturing Pt. 63, Subpt. HHHHH, Table 6 Table 6 to Subpart HHHHH of Part 63—Requirements for Heat Exchange... your heat exchange systems. For each . . . You must . . . Heat exchange system, as defined in §...

  16. Earth observing system. Output data products and input requirements, version 2.0. Volume 2: Analysis of IDS input requirements

    Science.gov (United States)

    Lu, Yun-Chi; Chang, Hyo Duck; Krupp, Brian; Kumar, Ravindra; Swaroop, Anand

    1992-01-01

    On 18 Jan. 1991, NASA confirmed 29 Inter-Disciplinary Science (IDS) teams, each involving a group of investigators, to conduct interdisciplinary research using data products from Earth Observing System (EOS) instruments. These studies are multi-disciplinary and require output data products from multiple EOS instruments, including both FI and PI instruments. The purpose of this volume is to provide information on output products expected from IDS investigators, required input data, and retrieval algorithms. Also included in this volume is the revised analysis of the 'best' and 'alternative' match data products for IDS input requirements. The original analysis presented in the August 1991 release of the SPSO Report was revised to incorporate the restructuring of the EOS platform. As a result of the reduced EOS payload, some of EOS instruments were deselected and their data products would not be available for IDS research. Information on these data products is also presented.

  17. Subcarrier Group Assignment for MC-CDMA Wireless Networks

    Directory of Open Access Journals (Sweden)

    Tho Le-Ngoc

    2007-12-01

    Full Text Available Two interference-based subcarrier group assignment strategies in dynamic resource allocation are proposed for MC-CDMA wireless systems to achieve high throughput in a multicell environment. Least interfered group assignment (LIGA selects for each session the subcarrier group on which the user receives the minimum interference, while best channel ratio group assignment (BCRGA chooses the subcarrier group with the largest channel response-to-interference ratio. Both analytical framework and simulation model are developed for evaluation of throughput distribution of the proposed schemes. An iterative approach is devised to handle the complex interdependency between multicell interference profiles in the throughput analysis. Illustrative results show significant throughput improvement offered by the interference-based assignment schemes for MC-CDMA multicell wireless systems. In particular, under low loading conditions, LIGA renders the best performance. However, as the load increases BCRGA tends to offer superior performance.

  18. A Balanced Approach to Capturing User Requirements in Business- to- Consumer Web Information Systems

    Directory of Open Access Journals (Sweden)

    M. S. Lane

    2001-11-01

    Full Text Available The development of business-to-consumer web information systems pose special challenges in the requirements analysis phase. It is difficult to capture user requirements given that users are relatively autonomous and anonymous and there are no major incentives for users to become involved in the development of a web information system. The researchers reviewed traditional requirement elicitation techniques, marketing research techniques and web usage analysis techniques. Current practice was assessed and the findings suggest that a balanced approach to user requirements capture will result in more complete and user centred requirements. This approach should lead to more effective business-to consumer web information systems.

  19. Gas turbines: gas cleaning requirements for biomass-fired systems

    Directory of Open Access Journals (Sweden)

    Oakey John

    2004-01-01

    Full Text Available Increased interest in the development of renewable energy technologies has been hencouraged by the introduction of legislative measures in Europe to reduce CO2 emissions from power generation in response to the potential threat of global warming. Of these technologies, biomass-firing represents a high priority because of the modest risk involved and the availability of waste biomass in many countries. Options based on farmed biomass are also under development. This paper reviews the challenges facing these technologies if they are to be cost competitive while delivering the supposed environmental benefits. In particular, it focuses on the use of biomass in gasification-based systems using gas turbines to deliver increased efficiencies. Results from recent studies in a European programme are presented. For these technologies to be successful, an optimal balance has to be achieved between the high cost of cleaning fuel gases, the reliability of the gas turbine and the fuel flexibility of the overall system. Such optimisation is necessary on a case-by-case basis, as local considerations can play a significant part.

  20. System Requirements Toward Specification of an Image Recorder

    Science.gov (United States)

    Corsover, S. L.; Herzog, D. G.; Donze, D. W.

    1986-07-01

    This paper approaches the topic of Laser Beam Image Recording from the user's perspective. It discusses the parameters of concern to a system group charged with specifying a high performance Laser Beam Image Recording Subsystem. The paper concentrates on those parameters that have significant impact on interface complexity, image quality and cost. A block diagram of a typical Laser Beam Recorder is shown along with a brief explanation of the following subsystems: Image Data Interface, Control Data Interface, Image Data Processor, Annotation, Scan Data Processor, Command and Control, Electro Optics, Film Transport, and Built-In-Test Equipment. Ranges of the following signal parameters are given: Line Rate, Data Rate, Data Duty Factor and Bytes/Line. Typical values of the following critical image quality parameters are given: Resolution, Raster and Banding, Geometric Fidelity, and Density Fidelity. Each of the critical parameters are defined and measuring techniques and equipment discussed. A list of system level questions which a user should consider when formulating the Laser Beam Recorder specification are also presented.

  1. Evolution of facility layout requirements and CAD [computer-aided design] system development

    International Nuclear Information System (INIS)

    The overall configuration of the Superconducting Super Collider (SSC) including the infrastructure and land boundary requirements were developed using a computer-aided design (CAD) system. The evolution of the facility layout requirements and the use of the CAD system are discussed. The emphasis has been on minimizing the amount of input required and maximizing the speed by which the output may be obtained. The computer system used to store the data is also described

  2. Requirements for the support power systems of CANDU nuclear power plants

    International Nuclear Information System (INIS)

    This Standard covers principal criteria and requirements for design, fabrication, installation, qualification, inspection, and documentation for assurance that support power will be available as required. The minimum requirements for support power are determined by the special safety systems and other safety-related systems that must function to ensure that the public health risk is acceptably low. Support power systems of a CANDU nuclear power plant include those parts of the electrical systems and instrument air systems that are necessary for the operation of safety-related systems

  3. Asynchronous Message Transmission Technique for Latency Requirements in Time Critical Ship-borne System

    Directory of Open Access Journals (Sweden)

    N. P. Shrivastava

    2016-01-01

    Full Text Available A solution to data ageing requirements in time critical ship system like fire control system is presented. In an operational sea borne platform, navigation requirements for the onboard systems are fulfilled by ring laser gyro-based inertial navigation system. For critical systems like fire control system, navigational data must be delivered in real time without any delay. However due to delay occurring in processing of raw information and transmission of data on interface bus some latency is introduced. Algorithm for an asynchronous message transmission technique from inertial navigation system to user system to meet its latency requirements is discussed. Latency requirement is achieved by sending a separate message with the time stamp for the instance the first byte of 100 Hz attitude data is received at the processing computer of navigation system.Defence Science Journal, Vol. 66, No. 1, January 2016, pp. 26-29, DOI: http://dx.doi.org/10.14429/dsj.66.8502

  4. 7 CFR 1437.104 - Assigned production.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 10 2010-01-01 2010-01-01 false Assigned production. 1437.104 Section 1437.104... Determining Yield Coverage Using Actual Production History § 1437.104 Assigned production. (a) When determining losses under this section, assigned production will be used to offset the loss of production...

  5. Lexical Stress Assignment in Italian Developmental Dyslexia

    Science.gov (United States)

    Paizi, Despina; Zoccolotti, Pierluigi; Burani, Cristina

    2011-01-01

    Stress assignment to Italian polysyllabic words is unpredictable, because stress is neither marked nor predicted by rule. Stress assignment, especially to low frequency words, has been reported to be a function of stress dominance and stress neighbourhood. Two experiments investigate stress assignment in sixth-grade, skilled and dyslexic, readers.…

  6. Transformation of visual direction requires the cognitive visual system

    Science.gov (United States)

    Bridgeman, Bruce

    2001-06-01

    We differentiate a cognitive branch of the visual system form a sensorimotor branch with the Roelofs effect, a perception that a target's position is biased in the direction opposite the offset of a surrounding fame. When a small fixed target is presented inside a frame that is offset to one side, normal humans perceive the target to be deviated in the direction opposite the frame's offset. They can still jab the target accurately, however, even though it is perceptually mislocalized. This dissociation indicates that motor coordinates are coded in a 'sensorimotor', possibly dorsal, pathway containing visual information that can be inconsistent with perceived information in a 'cognitive', possibly ventral pathway. Lack of a Roelofs effect indicates use of information in the sensorimotor pathway, independent from perception. We ask whether the sensorimotor pathway can handle a transformation of target position, in an anti-jabbing task analogous to anti-saccade tasks: the observer jabs a position symmetrically opposite the target's position, relative to the midline of the head. A 1 deg left or right. Observers were to jab the symmetrically opposite position as soon as the target disappeared. The result was a large and consistent Roelofs effect for an open-loop motor task, indicating that information from the cognitive pathway must be used to perform this task.

  7. An assignment based distributed resource manager

    Science.gov (United States)

    Poore, Aubrey B.; Danford, Scott; Hilt, Matthew J.

    2010-04-01

    The goal of this paper is to demonstrate the coordination in real-time of the operation of multiple sensors in such a way that those best-equipped for certain missions should perform those missions for the entire network, while other sensors fill in the gaps with their capabilities. The networked system of sensors must search, detect, track, classify, and engage targets of high value in a timely fashion. The information transmitted should be that which contributes the most toward achieving the performance goals (e.g., track accuracy, track completeness, and a consistent operational picture or single integrated air picture (SIAP)) subject to the network bandwidth constraints and the capabilities of the sensors. We present an overview of an assignment based sensor resource manager, a distributed algorithm for coordinating the assignment problem, and simulation results that validate this approach. While the assignment formulation and algorithms could include both sensor resource and bandwidth constraints with versions for single and multiple time periods, i.e., myopic and non-myopic, the distributed prototype formulation and algorithms developed for these experiments were restricted to the tasking of certain sensors to make measurements and transmit them over the network based on the current air picture. The number of measurements put on the network was controlled by limiting the number of sensors that could transmit measurements on each target. The communication loading was then measured to demonstrate that indeed one can design a distributed sensor resource manager capable of achieving the objectives of significantly reducing the communication loading and maintaining SIAP.

  8. Minimum energy requirement of an endoreversible desalination system of sea water

    OpenAIRE

    Lingen Chen, Liwei Shu, Yanlin Ge, Fengrui Sun

    2015-01-01

    A model of a typical endoreversible desalination system of sea water is established and the minimum energy requirement for the system is optimized by using finite time thermodynamic theory. The heat exchange between the endoreversible desalination system of sea water and surroundings are delivered by two endoreversible Carnot heat pumps and three endoreversible Carnot heat engines. The minimum energy requirement for the system can be found by subtracting the power outputs from the power input...

  9. Conceptual requirements for large fusion experiment control, data, robotics, and management systems

    International Nuclear Information System (INIS)

    The conceptual system requirements for the control, data, robotics, and project management (CDRM) system for the next generation of fusion experiments are developed by drawing on the success of the Tara control and data system. The requirements are described in terms of an integrated but separable matrix of well-defined interfaces among the various systems and subsystems. The study stresses modularity, performance, cost effectiveness, and exportability

  10. Formal requirement and architecture specifications of a multi-agent robotic system

    OpenAIRE

    Akhtar, Nadeem; Guyadec, Yann Le; Oquendo, Flavio

    2015-01-01

    One of the most challenging tasks in specification engineering for a multi-agent robotic system is to formally specify and architect the system, especially as a multi-agent robotic system is concurrent having concurrent processing, and often having dynamic environment. The formal requirement and architecture specifications along with step-wise refinement from abstract to concrete concepts play major role in formalizing the system. This paper proposes the formal requirement and architecture sp...

  11. Hiberarchy of requirement analysis of reactor protection system for advanced pressurized water reactor nuclear power plant

    International Nuclear Information System (INIS)

    In order to improve the security and the margin of safety of nuclear power plant, the research on requirement analysis of digital reactor protection system for advanced pressurized water reactor nuclear power plant was developed. Based on the known technology, a requirement analysis report was performed. A kind of three-levels pyramidal hierarchy was adopted in the requirement analysis, and the design characteristics of the requirement analysis were described in the analysis report. This hiberarchy can directly illuminate the design characters and logical achievement of the requirement analysis for advanced pressurized water reactor digital protection system. (authors)

  12. Implementation of an agile maintenance mechanic assignment methodology

    Science.gov (United States)

    Jimenez, Jesus A.; Quintana, Rolando

    2000-10-01

    The objective of this research was to develop a decision support system (DSS) to study the impact of introducing new equipment into a medical apparel plant from a maintenance organizational structure perspective. This system will enable the company to determine if their capacity is sufficient to meet current maintenance challenges. The DSS contains two database sets that describe equipment and maintenance resource profiles. The equipment profile specifies data such as mean time to failures, mean time to repairs, and minimum mechanic skill level required to fix each machine group. Similarly, maintenance-resource profile reports information about the mechanic staff, such as number and type of certifications received, education level, and experience. The DSS will then use this information to minimize machine downtime by assigning the highest skilled mechanics to machines with higher complexity and product value. A modified version of the simplex method, the transportation problem, was used to perform the optimization. The DSS was built using the Visual Basic for Applications (VBA) language contained in the Microsoft Excel environment. A case study was developed from current existing data. The analysis consisted of forty-two machine groups and six mechanic categories with ten skill levels. Results showed that only 56% of the mechanic workforce was utilized. Thus, the company had available resources for meeting future maintenance requirements.

  13. Application of enhanced modern structured analysis techniques to Space Station Freedom electric power system requirements

    Science.gov (United States)

    Biernacki, John; Juhasz, John; Sadler, Gerald

    1991-01-01

    A team of Space Station Freedom (SSF) system engineers are in the process of extensive analysis of the SSF requirements, particularly those pertaining to the electrical power system (EPS). The objective of this analysis is the development of a comprehensive, computer-based requirements model, using an enhanced modern structured analysis methodology (EMSA). Such a model provides a detailed and consistent representation of the system's requirements. The process outlined in the EMSA methodology is unique in that it allows the graphical modeling of real-time system state transitions, as well as functional requirements and data relationships, to be implemented using modern computer-based tools. These tools permit flexible updating and continuous maintenance of the models. Initial findings resulting from the application of EMSA to the EPS have benefited the space station program by linking requirements to design, providing traceability of requirements, identifying discrepancies, and fostering an understanding of the EPS.

  14. 50 CFR 300.116 - Requirements for a vessel monitoring system for U.S. vessels.

    Science.gov (United States)

    2010-10-01

    ... 50 Wildlife and Fisheries 7 2010-10-01 2010-10-01 false Requirements for a vessel monitoring system for U.S. vessels. 300.116 Section 300.116 Wildlife and Fisheries INTERNATIONAL FISHING AND RELATED ACTIVITIES INTERNATIONAL FISHERIES REGULATIONS Antarctic Marine Living Resources § 300.116 Requirements for a vessel monitoring system for...

  15. Digital Avionics Information System (DAIS): Training Requirements Analysis Model Users Guide. Final Report.

    Science.gov (United States)

    Czuchry, Andrew J.; And Others

    This user's guide describes the functions, logical operations and subroutines, input data requirements, and available outputs of the Training Requirements Analysis Model (TRAMOD), a computerized analytical life cycle cost modeling system for use in the early stages of system design. Operable in a stand-alone mode, TRAMOD can be used for the…

  16. Course Ontology-Based User's Knowledge Requirement Acquisition from Behaviors within E-Learning Systems

    Science.gov (United States)

    Zeng, Qingtian; Zhao, Zhongying; Liang, Yongquan

    2009-01-01

    User's knowledge requirement acquisition and analysis are very important for a personalized or user-adaptive learning system. Two approaches to capture user's knowledge requirement about course content within an e-learning system are proposed and implemented in this paper. The first approach is based on the historical data accumulated by an…

  17. 75 FR 62098 - Proposed Information Collection; Comment Request; Expanded Vessel Monitoring System Requirement...

    Science.gov (United States)

    2010-10-07

    ... Vessel Monitoring System Requirement in the Pacific Coast Groundfish Fishery AGENCY: National Oceanic and... commercial fishing vessels are required to install and use a vessel monitoring system (VMS) that...-AY68, in late 2010. As stated in the proposed rule for RIN 0648-AY68 (75 FR 53380, August 31,...

  18. 40 CFR 35.928 - Requirements for an industrial cost recovery system.

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 1 2010-07-01 2010-07-01 false Requirements for an industrial cost recovery system. 35.928 Section 35.928 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY GRANTS AND... Water Act § 35.928 Requirements for an industrial cost recovery system. (a) The Regional...

  19. 40 CFR 63.2490 - What requirements must I meet for heat exchange systems?

    Science.gov (United States)

    2010-07-01

    ... must I meet for heat exchange systems? (a) You must comply with each requirement in Table 10 to this subpart that applies to your heat exchange systems, except as specified in paragraphs (b) and (c) of this... 40 Protection of Environment 12 2010-07-01 2010-07-01 true What requirements must I meet for...

  20. 40 CFR 63.8030 - What requirements apply to my heat exchange systems?

    Science.gov (United States)

    2010-07-01

    ... apply to my heat exchange systems? (a) You must comply with the requirements specified in Table 6 to this subpart that apply to your heat exchange systems, except as specified in paragraphs (b) through (e... 40 Protection of Environment 13 2010-07-01 2010-07-01 false What requirements apply to my...

  1. From Collective Knowledge to Intelligence: Pre-Requirements Analysis of Large and Complex Systems

    OpenAIRE

    Liang, Peng; Avgeriou, Paris; He, Keqing; Xu, Lai

    2010-01-01

    Requirements engineering is essentially a social collaborative activity in which involved stakeholders have to closely work together to communicate, elicit, negotiate, define, confirm, and finally come up with the requirements for the system to be implemented or upgraded. In the development of large and complex systems, with a huge number of uncertain stakeholders, the requirements engineering process becomes a challenging task due to overwhelming and dynamic social interactions, tradeoffs, a...

  2. Context-Aware Reviewer Assignment for Trust Enhanced Peer Review.

    Directory of Open Access Journals (Sweden)

    Lei Li

    Full Text Available Reviewer assignment is critical to peer review systems, such as peer-reviewed research conferences or peer-reviewed funding applications, and its effectiveness is a deep concern of all academics. However, there are some problems in existing peer review systems during reviewer assignment. For example, some of the reviewers are much more stringent than others, leading to an unfair final decision, i.e., some submissions (i.e., papers or applications with better quality are rejected. In this paper, we propose a context-aware reviewer assignment for trust enhanced peer review. More specifically, in our approach, we first consider the research area specific expertise of reviewers, and the institution relevance and co-authorship between reviewers and authors, so that reviewers with the right expertise are assigned to the corresponding submissions without potential conflict of interest. In addition, we propose a novel cross-assignment paradigm, and reviewers are cross-assigned in order to avoid assigning a group of stringent reviewers or a group of lenient reviewers to the same submission. More importantly, on top of them, we propose an academic CONtext-aware expertise relevanCe oriEnted Reviewer cross-assignmenT approach (CONCERT, which aims to effectively estimate the "true" ratings of submissions based on the ratings from all reviewers, even though no prior knowledge exists about the distribution of stringent reviewers and lenient reviewers. The experiments illustrate that compared with existing approaches, our proposed CONCERT approach can less likely assign more than one stringent reviewers or lenient reviewers to a submission simultaneously and significantly reduce the influence of ratings from stringent reviewers and lenient reviewers, leading to trust enhanced peer review and selection, no matter what kind of distributions of stringent reviewers and lenient reviewers are.

  3. Context-Aware Reviewer Assignment for Trust Enhanced Peer Review.

    Science.gov (United States)

    Li, Lei; Wang, Yan; Liu, Guanfeng; Wang, Meng; Wu, Xindong

    2015-01-01

    Reviewer assignment is critical to peer review systems, such as peer-reviewed research conferences or peer-reviewed funding applications, and its effectiveness is a deep concern of all academics. However, there are some problems in existing peer review systems during reviewer assignment. For example, some of the reviewers are much more stringent than others, leading to an unfair final decision, i.e., some submissions (i.e., papers or applications) with better quality are rejected. In this paper, we propose a context-aware reviewer assignment for trust enhanced peer review. More specifically, in our approach, we first consider the research area specific expertise of reviewers, and the institution relevance and co-authorship between reviewers and authors, so that reviewers with the right expertise are assigned to the corresponding submissions without potential conflict of interest. In addition, we propose a novel cross-assignment paradigm, and reviewers are cross-assigned in order to avoid assigning a group of stringent reviewers or a group of lenient reviewers to the same submission. More importantly, on top of them, we propose an academic CONtext-aware expertise relevanCe oriEnted Reviewer cross-assignmenT approach (CONCERT), which aims to effectively estimate the "true" ratings of submissions based on the ratings from all reviewers, even though no prior knowledge exists about the distribution of stringent reviewers and lenient reviewers. The experiments illustrate that compared with existing approaches, our proposed CONCERT approach can less likely assign more than one stringent reviewers or lenient reviewers to a submission simultaneously and significantly reduce the influence of ratings from stringent reviewers and lenient reviewers, leading to trust enhanced peer review and selection, no matter what kind of distributions of stringent reviewers and lenient reviewers are. PMID:26090849

  4. An automated system designed for large scale NMR data deposition and annotation: application to over 600 assigned chemical shift data entries to the BioMagResBank from the Riken Structural Genomics/Proteomics Initiative internal database

    International Nuclear Information System (INIS)

    Biomolecular NMR chemical shift data are key information for the functional analysis of biomolecules and the development of new techniques for NMR studies utilizing chemical shift statistical information. Structural genomics projects are major contributors to the accumulation of protein chemical shift information. The management of the large quantities of NMR data generated by each project in a local database and the transfer of the data to the public databases are still formidable tasks because of the complicated nature of NMR data. Here we report an automated and efficient system developed for the deposition and annotation of a large number of data sets including 1H, 13C and 15N resonance assignments used for the structure determination of proteins. We have demonstrated the feasibility of our system by applying it to over 600 entries from the internal database generated by the RIKEN Structural Genomics/Proteomics Initiative (RSGI) to the public database, BioMagResBank (BMRB). We have assessed the quality of the deposited chemical shifts by comparing them with those predicted from the PDB coordinate entry for the corresponding protein. The same comparison for other matched BMRB/PDB entries deposited from 2001–2011 has been carried out and the results suggest that the RSGI entries greatly improved the quality of the BMRB database. Since the entries include chemical shifts acquired under strikingly similar experimental conditions, these NMR data can be expected to be a promising resource to improve current technologies as well as to develop new NMR methods for protein studies.

  5. Constellation Program Human-System Integration Requirements. Revision E, Nov. 19, 2010

    Science.gov (United States)

    Dory, Jonathan

    2010-01-01

    The Human-Systems Integration Requirements (HSIR) in this document drive the design of space vehicles, their systems, and equipment with which humans interface in the Constellation Program (CxP). These requirements ensure that the design of Constellation (Cx) systems is centered on the needs, capabilities, and limitations of the human. The HSIR provides requirements to ensure proper integration of human-to-system interfaces. These requirements apply to all mission phases, including pre-launch, ascent, Earth orbit, trans-lunar flight, lunar orbit, lunar landing, lunar ascent, Earth return, Earth entry, Earth landing, post-landing, and recovery. The Constellation Program must meet NASA's Agency-level human rating requirements, which are intended to ensure crew survival without permanent disability. The HSIR provides a key mechanism for achieving human rating of Constellation systems.

  6. 40 CFR 141.403 - Treatment technique requirements for ground water systems.

    Science.gov (United States)

    2010-07-01

    ....403 Treatment technique requirements for ground water systems. (a) Ground water systems with... water source monitoring under § 141.402 if the system subsequently discontinues 4-log treatment of...) Alternative treatment. A ground water system that uses a State-approved alternative treatment to meet...

  7. Space Station data system analysis/architecture study. Task 1: Functional requirements definition, DR-5

    Science.gov (United States)

    1985-01-01

    The initial task in the Space Station Data System (SSDS) Analysis/Architecture Study is the definition of the functional and key performance requirements for the SSDS. The SSDS is the set of hardware and software, both on the ground and in space, that provides the basic data management services for Space Station customers and systems. The primary purpose of the requirements development activity was to provide a coordinated, documented requirements set as a basis for the system definition of the SSDS and for other subsequent study activities. These requirements should also prove useful to other Space Station activities in that they provide an indication of the scope of the information services and systems that will be needed in the Space Station program. The major results of the requirements development task are as follows: (1) identification of a conceptual topology and architecture for the end-to-end Space Station Information Systems (SSIS); (2) development of a complete set of functional requirements and design drivers for the SSIS; (3) development of functional requirements and key performance requirements for the Space Station Data System (SSDS); and (4) definition of an operating concept for the SSIS. The operating concept was developed both from a Space Station payload customer and operator perspective in order to allow a requirements practicality assessment.

  8. An Investigation of the Partial-Assignment Completion Effect on Students' Assignment Choice Behavior

    Science.gov (United States)

    Hawthorn-Embree, Meredith L.; Skinner, Christopher H.; Parkhurst, John; Conley, Elisha

    2011-01-01

    This study was designed to investigate the partial assignment completion effect. Seventh-grade students were given a math assignment. After working for 5 min, they were interrupted and their partially completed assignments were collected. About 20 min later, students were given their partially completed assignment and a new, control assignment…

  9. 45 CFR 302.50 - Assignment of rights to support.

    Science.gov (United States)

    2010-10-01

    ... 45 Public Welfare 2 2010-10-01 2010-10-01 false Assignment of rights to support. 302.50 Section 302.50 Public Welfare Regulations Relating to Public Welfare OFFICE OF CHILD SUPPORT ENFORCEMENT (CHILD SUPPORT ENFORCEMENT PROGRAM), ADMINISTRATION FOR CHILDREN AND FAMILIES, DEPARTMENT OF HEALTH AND HUMAN SERVICES STATE PLAN REQUIREMENTS §...

  10. An optimal query assignment for wireless sensor networks

    NARCIS (Netherlands)

    Mitici, Mihaela; Onderwater, Martijn; Graaf, de Maurits; Ommeren, van Jan-Kees; Dijk, van Nico; Goseling, Jasper

    2012-01-01

    With the increased use of large-scale real-time embedded sensor networks, new control mechanisms are needed to avoid congestion and meet required Quality of Service (QoS) levels. In this paper, we propose a Markov Decision Problem (MDP) to prescribe an optimal query assignment strategy that achieves

  11. 42 CFR 435.610 - Assignment of rights to benefits.

    Science.gov (United States)

    2010-10-01

    ... paternity and in obtaining medical support and payments, unless the individual establishes good cause for not cooperating, and except for individuals described in section 1902 (1)(1)(A) of the Act (poverty... cause for not cooperating. (b) The requirements for assignment of rights must be applied uniformly...

  12. Report of the Census Task Force on beamline control system requirements

    International Nuclear Information System (INIS)

    A special task force was appointed to study the experience with the present beamline control system at Fermilab and to make recommendations in this area. The charge of the committee and the list of its members are appended. In order to carry out its assignment, the committee conducted a series of meetings in which it discussed the controls situation in general and the best way to approach the user community. The various groups of users were identified, and a letter was written to representatives of these groups asking questions concerning the present system and future needs. The committee met with each group to discuss the response to these questions. Written summaries of the discussions are appended. Conclusions are drawn regarding current problems, systematic upgrades and specific recommendations

  13. Pediatric Online Evidence-Based Medicine Assignment Is a Novel Effective Enjoyable Undergraduate Medical Teaching Tool: A SQUIRE Compliant Study.

    Science.gov (United States)

    Kotb, Magd A; Elmahdy, Hesham Nabeh; Khalifa, Nour El Deen Mahmoud; El-Deen, Mohamed Hamed Nasr; Lotfi, Mohamed Amr N

    2015-07-01

    Evidence-based medicine (EBM) is delivered through a didactic, blended learning, and mixed models. Students are supposed to construct an answerable question in PICO (patient, intervention, comparison, and outcome) framework, acquire evidence through search of literature, appraise evidence, apply it to the clinical case scenario, and assess the evidence in relation to clinical context. Yet these teaching models have limitations especially those related to group work, for example, handling uncooperative students, students who fail to contribute, students who domineer, students who have personal conflict, their impact upon progress of their groups, and inconsistent individual acquisition of required skills. At Pediatrics Department, Faculty of Medicine, Cairo University, we designed a novel undergraduate pediatric EBM assignment online system to overcome shortcomings of previous didactic method and aimed to assess its effectiveness by prospective follow-up during academic years 2012 to 2013 and 2013 to 2014. The novel web-based online interactive system was tailored to provide sequential single and group assignments for each student. Single assignment addressed a specific case scenario question, while group assignment was teamwork that addressed different questions of same case scenario. Assignment comprised scholar content and skills. We objectively analyzed students' performance by criterion-based assessment and subjectively by anonymous student questionnaire. A total of 2879 were enrolled in 5th year Pediatrics Course consecutively, of them 2779 (96.5%) logged in and 2554 (88.7%) submitted their work. They were randomly assigned to 292 groups. A total of 2277 (89.15%) achieved ≥ 80% of total mark (4/5), of them 717 (28.1%) achieved a full mark. A total of 2178 (85.27%) and 2359 (92.36%) made evidence-based conclusions and recommendations in single and group assignment, respectively (P < 0.001). A total of 1102 (43.1%) answered student questionnaire, of them 898

  14. Preliminary design requirements document for the initial single-shell tank retrieval system

    Energy Technology Data Exchange (ETDEWEB)

    Hertzel, J.S., Westinghouse Hanford

    1996-07-24

    The scope of this Preliminary Design Requirements Document is to identify and define the functions, with associated requirements, which must be performed to demonstrate and accomplish the initial single-shell tank saltcake retrieval from selected tanks. This document sets forth functions, requirements, performance requirements and design constraints necessary to begin conceptual design for the Initial Single-shell Tank Retrieval System. System and physical interfaces between the Initial Single-shell Tank Retrieval System project and the Tank Waste Remediation are identified. The constraints, performance requirements, and transfer of information and data across a technical interface will be documented in an Interface Control Document. The design requirements provided in this document will be augmented by additional detailed design to be documented by the project.

  15. A Support System for Crop Water Requirement Diagnosis and Irrigation Decision Making

    OpenAIRE

    Chao Zhang; Bingqin Zhu; Su Ki Ooi; Xinmei Zhou; Wenting Han; Pute Wu

    2013-01-01

    A crop water requirement diagnosis and irrigation water requirement decision-making support system was developed which comprised of a data import module, a database module, a model library and diagnosis and decision-making modules. Depending on the information acquisition method, the system can adopt one of the following two modes: online real-time diagnosis and decision making between the monitoring and decision-making systems or offline diagnosis and decision making. Using software te...

  16. Solving multiconstraint assignment problems using learning automata.

    Science.gov (United States)

    Horn, Geir; Oommen, B John

    2010-02-01

    This paper considers the NP-hard problem of object assignment with respect to multiple constraints: assigning a set of elements (or objects) into mutually exclusive classes (or groups), where the elements which are "similar" to each other are hopefully located in the same class. The literature reports solutions in which the similarity constraint consists of a single index that is inappropriate for the type of multiconstraint problems considered here and where the constraints could simultaneously be contradictory. This feature, where we permit possibly contradictory constraints, distinguishes this paper from the state of the art. Indeed, we are aware of no learning automata (or other heuristic) solutions which solve this problem in its most general setting. Such a scenario is illustrated with the static mapping problem, which consists of distributing the processes of a parallel application onto a set of computing nodes. This is a classical and yet very important problem within the areas of parallel computing, grid computing, and cloud computing. We have developed four learning-automata (LA)-based algorithms to solve this problem: First, a fixed-structure stochastic automata algorithm is presented, where the processes try to form pairs to go onto the same node. This algorithm solves the problem, although it requires some centralized coordination. As it is desirable to avoid centralized control, we subsequently present three different variable-structure stochastic automata (VSSA) algorithms, which have superior partitioning properties in certain settings, although they forfeit some of the scalability features of the fixed-structure algorithm. All three VSSA algorithms model the processes as automata having first the hosting nodes as possible actions; second, the processes as possible actions; and, third, attempting to estimate the process communication digraph prior to probabilistically mapping the processes. This paper, which, we believe, comprehensively reports the

  17. Exploiting image registration for automated resonance assignment in NMR

    International Nuclear Information System (INIS)

    Analysis of protein NMR data involves the assignment of resonance peaks in a number of multidimensional data sets. To establish resonance assignment a three-dimensional search is used to match a pair of common variables, such as chemical shifts of the same spin system, in different NMR spectra. We show that by displaying the variables to be compared in two-dimensional plots the process can be simplified. Moreover, by utilizing a fast Fourier transform cross-correlation algorithm, more common to the field of image registration or pattern matching, we can automate this process. Here, we use sequential NMR backbone assignment as an example to show that the combination of correlation plots and segmented pattern matching establishes fast backbone assignment in fifteen proteins of varying sizes. For example, the 265-residue RalBP1 protein was 95.4 % correctly assigned in 10 s. The same concept can be applied to any multidimensional NMR data set where analysis comprises the comparison of two variables. This modular and robust approach offers high efficiency with excellent computational scalability and could be easily incorporated into existing assignment software

  18. The study on knowledge transferring incentive for information system requirement development

    Energy Technology Data Exchange (ETDEWEB)

    Li, Yang [School of Economics and Business Administration, Chongqing University (China)

    2015-03-10

    Information system requirement development is a process of users’ knowledge sharing and transferring. However the tacit requirements developing is a main problem during requirement development process, for the reason of difficult to encoding, express, and communicate. Knowledge fusion and corporate effort is needed to finding tacit requirements. Under this background, our paper try to find out the rule of effort dynamic evolutionary of software developer and user by building an evolutionary game model on the condition of incentive system. And in addition this paper provides an in depth discussion at the end of this paper.

  19. The study on knowledge transferring incentive for information system requirement development

    International Nuclear Information System (INIS)

    Information system requirement development is a process of users’ knowledge sharing and transferring. However the tacit requirements developing is a main problem during requirement development process, for the reason of difficult to encoding, express, and communicate. Knowledge fusion and corporate effort is needed to finding tacit requirements. Under this background, our paper try to find out the rule of effort dynamic evolutionary of software developer and user by building an evolutionary game model on the condition of incentive system. And in addition this paper provides an in depth discussion at the end of this paper

  20. Requirements Analysis Study for Master Pump Shutdown System Project Development Specification [SEC 1 and 2

    International Nuclear Information System (INIS)

    This document has been updated during the definitive design portion of the first phase of the W-314 Project to capture additional software requirements and is planned to be updated during the second phase of the W-314 Project to cover the second phase of the Project's scope. The objective is to provide requirement traceability by recording the analysis/basis for the functional descriptions of the master pump shutdown system. This document identifies the sources of the requirements and/or how these were derived. Each requirement is validated either by quoting the source or an analysis process involving the required functionality, performance characteristics, operations input or engineering judgment

  1. Requirements Analysis Study for Master Pump Shutdown System Project Development Specification [SEC 1 and 2

    Energy Technology Data Exchange (ETDEWEB)

    BEVINS, R.R.

    2000-03-24

    This document has been updated during the definitive design portion of the first phase of the W-314 Project to capture additional software requirements and is planned to be updated during the second phase of the W-314 Project to cover the second phase of the Project's scope. The objective is to provide requirement traceability by recording the analysis/basis for the functional descriptions of the master pump shutdown system. This document identifies the sources of the requirements and/or how these were derived. Each requirement is validated either by quoting the source or an analysis process involving the required functionality, performance characteristics, operations input or engineering judgment.

  2. Requirements verification of real-time shutdown system by qualitative formalism

    International Nuclear Information System (INIS)

    Hybrid real-time and embedded software development is an area where software requirements must be subject to highly rigorous and systematic analysis. This paper concentrates on the qualitative formal method to specify the continuous plant and the required system behavior in terms of languages based on the qualitative physics and to verify that the hybrid real-time system satisfies the required system behavior by a qualitative simulation. The qualitative reasoning approach is selected to help the designers concisely specify the desired system properties without having to describe unnecessary details. To demonstrate the effectiveness of using a qualitative formalism to specify and analyze requirements of embedded real-time software, we use a shutdown system (SDS) to illustrate how the software cost reduction (SCR) style specification can be transformed and analyzed

  3. Job Assignments, Intrinsic Motivation and Explicit Incentives

    OpenAIRE

    Nafziger, Julia

    2008-01-01

    This paper considers the interplay of job assignments with the intrinsic and extrinsic motivation of an agent. Job assignments influence the self confidence of the agent, and thereby his intrinsic motivation. Monetary reward allow the principal to complement intrinsic motivation with extrinsic incentives. The main result is that the principal chooses an inefficient job assignment rule to enhance the agent's intrinsic motivation even though she can motivate him with monetary rewards. This show...

  4. Assigning proctors to exams with scatter search

    OpenAIRE

    Ramalhinho-Louren??o, Helena; Mart??, Rafael; Laguna, Manuel

    2001-01-01

    In this paper we present an algorithm to assign proctors to exams. This NP-hard problem is related to the generalized assignment problem with multiple objectives. The problem consists of assigning teaching assistants to proctor final exams at a university. We formulate this problem as a multiobjective integer program (IP) with a preference function and a workload-fairness function. We then consider also a weighted objective that combines both functions. We develop a scatter ...

  5. Functional requirements for the Automated Transportation Management System: TTP number: RL 439002

    Energy Technology Data Exchange (ETDEWEB)

    Portsmouth, J.H. [Westinghouse Hanford Co., Richland, WA (United States)

    1992-12-31

    This requirements analysis, documents Department of Energy (DOE) transportation management procedures for the purpose of providing a clear and mutual understanding between users and designers of the proposed Automated Transportation Management System (ATMS). It is imperative that one understand precisely how DOE currently performs traffic management tasks; only then can an integrated system be proposed that successfully satisfies the major requirements of transportation managers and other system users. Accordingly, this report describes the current workings of DOE transportation organizations and then proposes a new system which represents a synthesis of procedures (both current and desired) which forms the basis for further systems development activities.

  6. HEMOS: an expert support system prototype for forecasting blood requirements for Marine Corps medical support/

    OpenAIRE

    Greenauer, Michael A.

    1988-01-01

    Research was conducted to demonstrate the applicability of artificial intelligence techniques to the problem of estimating blood resupply requirements in Navy medical units supporting Marine Corps commands engaged in combat operations. Prototyping methodology was used to develop a combination expert system and decision support system, termed an expert support system, which was named HEMOS (Hemologic Expert Support System for Marine Corps Operational Support). The prototype system was tested a...

  7. Surveillance Analysis Computer System (SACS): Software requirements specification (SRS). Revision 2

    International Nuclear Information System (INIS)

    This document is the primary document establishing requirements for the Surveillance Analysis Computer System (SACS) database, an Impact Level 3Q system. SACS stores information on tank temperatures, surface levels, and interstitial liquid levels. This information is retrieved by the customer through a PC-based interface and is then available to a number of other software tools. The software requirements specification (SRS) describes the system requirements for the SACS Project, and follows the Standard Engineering Practices (WHC-CM-6-1), Software Practices (WHC-CM-3-10) and Quality Assurance (WHC-CM-4-2, QR 19.0) policies

  8. Identifying and confirming information and system quality requirements for multi-agency disaster management

    NARCIS (Netherlands)

    Bharosa, N.; Appelman, J.A.; Van Zanten, B.; Zuurmond, A.

    2009-01-01

    This paper investigates the relevance and assurance of information and system quality as requirements for information systems success during disaster management. Despite the many examples of poor information quality and poor system quality, research on the relevance and assurance of these requiremen

  9. 17 CFR 242.302 - Recordkeeping requirements for alternative trading systems.

    Science.gov (United States)

    2010-04-01

    ... alternative trading systems. 242.302 Section 242.302 Commodity and Securities Exchanges SECURITIES AND... SECURITY FUTURES Regulation Ats-Alternative Trading Systems § 242.302 Recordkeeping requirements for alternative trading systems. To comply with the condition set forth in paragraph (b)(8) of § 242.301,...

  10. 40 CFR 35.929-2 - General requirements for all user charge systems.

    Science.gov (United States)

    2010-07-01

    ... of the user charges or ad valorem taxes which are attributable to waste water treatment services. (g...-Clean Water Act § 35.929-2 General requirements for all user charge systems. User charge systems based... and maintenance of the treatment works, and its approved user charge system. The grantee shall...

  11. User requirements for the Harmonization of Environmental Measurement Information System HEMIS

    International Nuclear Information System (INIS)

    The purpose of this study was to define as much as possible, the functional requirements of the potential main users of the Harmonization of Environmental Measurement Information System, HEMIS. The resulting report is to be used as a basis for a rapid decision on technical approaches to system development, planning of schedule and costs, and to guide the system development and implementation process

  12. 42 CFR 403.304 - Minimum requirements for State systems-discretionary approval.

    Science.gov (United States)

    2010-10-01

    ... 42 Public Health 2 2010-10-01 2010-10-01 false Minimum requirements for State systems... provide to CMS satisfactory assurance as to the following: (1) The system provides for equitable treatment... the system must have and maintain a utilization and quality control review agreement with a...

  13. Alternatives generation and analysis for phase I intermediate waste feed staging system design requirements

    Energy Technology Data Exchange (ETDEWEB)

    Britton, M.D.

    1996-10-02

    This document provides; a decision analysis summary; problem statement; constraints, requirements, and assumptions; decision criteria; intermediate waste feed staging system options and alternatives generation and screening; intermediate waste feed staging system design concepts; intermediate waste feed staging system alternative evaluation and analysis; and open issues and actions.

  14. System Requirement in View of Users and Process for Content Management and Academic Support System for Computer Laboratory

    OpenAIRE

    Win Ce; Hanny Juwitasary; Hendro

    2015-01-01

    The system for Laboratory Information will take focus on determining the need for information systems related to the management, content development and academic management in the laboratory. These processes will focus on understanding the need and system requirement for a laboratory information system that focus on content management and the way to design a process to make sure the continuation of content creation can be done. With the design of the laboratory information system is expected ...

  15. Modeling and verifying SoS performance requirements of C4ISR systems

    Institute of Scientific and Technical Information of China (English)

    Yudong Qi; Zhixue Wang; Qingchao Dong; Hongyue He

    2015-01-01

    System-of-systems (SoS) engineering involves a com-plex process of refining high-level SoS requirements into more detailed systems requirements and assessing the extent to which the performances of to-be systems may possibly satisfy SoS capa-bility objectives. The key issue is how to model such requirements to automate the process of analysis and assessment. This paper suggests a meta-model that defines both functional and non-functional features of SoS requirements for command and control, communication, computer, intel igence, surveil ance reconnais-sance (C4ISR) systems. A domain-specific modeling language is defined by extending unified modeling language (UML) con-structed of class and association with fuzzy theory in order to model the fuzzy concepts of performance requirements. An effi-ciency evaluation function is introduced, based on B´ezier curves, to predict the effectiveness of systems. An algorithm is presented to transform domain models in fuzzy UML into a requirements ontology in description logic (DL) so that requirements verification can be automated with a popular DL reasoner such as Pel et.

  16. DNATCO: assignment of DNA conformers at dnatco.org.

    Science.gov (United States)

    Černý, Jiří; Božíková, Paulína; Schneider, Bohdan

    2016-07-01

    The web service DNATCO (dnatco.org) classifies local conformations of DNA molecules beyond their traditional sorting to A, B and Z DNA forms. DNATCO provides an interface to robust algorithms assigning conformation classes called NTC: to dinucleotides extracted from DNA-containing structures uploaded in PDB format version 3.1 or above. The assigned dinucleotide NTC: classes are further grouped into DNA structural alphabet NTA: , to the best of our knowledge the first DNA structural alphabet. The results are presented at two levels: in the form of user friendly visualization and analysis of the assignment, and in the form of a downloadable, more detailed table for further analysis offline. The website is free and open to all users and there is no login requirement. PMID:27150812

  17. Requirements Development Issues for Advanced Life Support Systems: Solid Waste Management

    Science.gov (United States)

    Levri, Julie A.; Fisher, John W.; Alazraki, Michael P.; Hogan, John A.

    2002-01-01

    Long duration missions pose substantial new challenges for solid waste management in Advanced Life Support (ALS) systems. These possibly include storing large volumes of waste material in a safe manner, rendering wastes stable or sterilized for extended periods of time, and/or processing wastes for recovery of vital resources. This is further complicated because future missions remain ill-defined with respect to waste stream quantity, composition and generation schedule. Without definitive knowledge of this information, development of requirements is hampered. Additionally, even if waste streams were well characterized, other operational and processing needs require clarification (e.g. resource recovery requirements, planetary protection constraints). Therefore, the development of solid waste management (SWM) subsystem requirements for long duration space missions is an inherently uncertain, complex and iterative process. The intent of this paper is to address some of the difficulties in writing requirements for missions that are not completely defined. This paper discusses an approach and motivation for ALS SWM requirements development, the characteristics of effective requirements, and the presence of those characteristics in requirements that are developed for uncertain missions. Associated drivers for life support system technological capability are also presented. A general means of requirements forecasting is discussed, including successive modification of requirements and the need to consider requirements integration among subsystems.

  18. EZ-ASSIGN, a program for exhaustive NMR chemical shift assignments of large proteins from complete or incomplete triple-resonance data

    International Nuclear Information System (INIS)

    For several of the proteins in the BioMagResBank larger than 200 residues, 60 % or fewer of the backbone resonances were assigned. But how reliable are those assignments? In contrast to complete assignments, where it is possible to check whether every triple-resonance Generalized Spin System (GSS) is assigned once and only once, with incomplete data one should compare all possible assignments and pick the best one. But that is not feasible: For example, for 200 residues and an incomplete set of 100 GSS, there are 1.6 × 10260 possible assignments. In “EZ-ASSIGN”, the protein sequence is divided in smaller unique fragments. Combined with intelligent search approaches, an exhaustive comparison of all possible assignments is now feasible using a laptop computer. The program was tested with experimental data of a 388-residue domain of the Hsp70 chaperone protein DnaK and for a 351-residue domain of a type III secretion ATPase. EZ-ASSIGN reproduced the hand assignments. It did slightly better than the computer program PINE (Bahrami et al. in PLoS Comput Biol 5(3):e1000307, 2009) and significantly outperformed SAGA (Crippen et al. in J Biomol NMR 46:281–298, 2010), AUTOASSIGN (Zimmerman et al. in J Mol Biol 269:592–610, 1997), and IBIS (Hyberts and Wagner in J Biomol NMR 26:335–344, 2003). Next, EZ-ASSIGN was used to investigate how well NMR data of decreasing completeness can be assigned. We found that the program could confidently assign fragments in very incomplete data. Here, EZ-ASSIGN dramatically outperformed all the other assignment programs tested

  19. Technical Requirements Analysis and Control Systems (TRACS) Initial Operating Capability (IOC) documentation

    Science.gov (United States)

    Hammond, Dana P.

    1991-01-01

    The Technical Requirements Analysis and Control Systems (TRACS) software package is described. TRACS offers supplemental tools for the analysis, control, and interchange of project requirements. This package provides the fundamental capability to analyze and control requirements, serves a focal point for project requirements, and integrates a system that supports efficient and consistent operations. TRACS uses relational data base technology (ORACLE) in a stand alone or in a distributed environment that can be used to coordinate the activities required to support a project through its entire life cycle. TRACS uses a set of keyword and mouse driven screens (HyperCard) which imposes adherence through a controlled user interface. The user interface provides an interactive capability to interrogate the data base and to display or print project requirement information. TRACS has a limited report capability, but can be extended with PostScript conventions.

  20. A catalogue of functional software requirement patterns for the domain of content management systems

    OpenAIRE

    Palomares Bonache, Cristina; Quer Bosor, Maria Carme; Franch Gutiérrez, Javier; Renault, Samuel; Guerlain, Cindy

    2013-01-01

    Software requirement patterns have been proposed as an artifact for fostering requirements reuse. When we define these patterns forthe functional part of a software system, we realize that most of patterns are specific of a software domain. This paper presents and analyzes a catalogue of functional software requirement patterns for the domain of content management, and gives an overview of how this catalogue has been constructed from the systematic analysis of 6 existing software sp...

  1. Knowledge-enriched Requirement Specification for One-of-a-kind Complex Systems

    OpenAIRE

    Ratchev, Svetan; Kulwant S. Pawar; Urwin, Esmond; Mueller, Dirk

    2005-01-01

    Abstract Requirement engineering (RE) process is becoming a key factor for the success of complex one-of-a-kind products. The RE process is commonly viewed as an early system engineering phase with a major bearing on response time, quality, and cost. This study reports on the knowledge acquisition and sharing for requirement engineering (KARE), approach for requirement specification of one-of-a-kind complex...

  2. Minimum energy requirement of an endoreversible desalination system of sea water

    Directory of Open Access Journals (Sweden)

    Lingen Chen, Liwei Shu, Yanlin Ge, Fengrui Sun

    2015-01-01

    Full Text Available A model of a typical endoreversible desalination system of sea water is established and the minimum energy requirement for the system is optimized by using finite time thermodynamic theory. The heat exchange between the endoreversible desalination system of sea water and surroundings are delivered by two endoreversible Carnot heat pumps and three endoreversible Carnot heat engines. The minimum energy requirement for the system can be found by subtracting the power outputs from the power inputs. The results show that the minimum energy requirement for the distillation system depends on not only the properties of the input saline water, the output pure water and the brine water, but also the inherent features of the heat pumps and the heat engines, i.e. the total heat conductance of the heat pumps and of the heat engines. The results obtained herein are closer to those of practical system than those obtained based on reversible model.

  3. Enabling Requirements-Based Programming for Highly-Dependable Complex Parallel and Distributed Systems

    Science.gov (United States)

    Hinchey, Michael G.; Rash, James L.; Rouff, Christopher A.

    2005-01-01

    The manual application of formal methods in system specification has produced successes, but in the end, despite any claims and assertions by practitioners, there is no provable relationship between a manually derived system specification or formal model and the customer's original requirements. Complex parallel and distributed system present the worst case implications for today s dearth of viable approaches for achieving system dependability. No avenue other than formal methods constitutes a serious contender for resolving the problem, and so recognition of requirements-based programming has come at a critical juncture. We describe a new, NASA-developed automated requirement-based programming method that can be applied to certain classes of systems, including complex parallel and distributed systems, to achieve a high degree of dependability.

  4. International Low Impact Docking System (iLIDS) Project Technical Requirements Specification, Revision F

    Science.gov (United States)

    Lewis, James L.

    2011-01-01

    The NASA Docking System (NDS) is NASA's implementation for the emerging International Docking System Standard (IDSS) using low impact docking technology. The NASA Docking System Project (NDSP) is the International Space Station (ISS) Program's project to produce the NDS, Common Docking Adapter (CDA) and Docking Hub. The NDS design evolved from the Low Impact Docking System (LIDS). The acronym international Low Impact Docking System (iLIDS) is also used to describe this system as well as the Government Furnished Equipment (GFE) project designing the NDS for the NDSP. NDS and iLIDS may be used interchangeability. This document will use the acronym iLIDS. Some of the heritage documentation and implementations (e.g., software command names, requirement identification (ID), figures, etc.) used on NDS will continue to use the LIDS acronym. This specification defines the technical requirements for the iLIDS GFE delivered to the NDSP by the iLIDS project. This document contains requirements for two iLIDS configurations, SEZ29101800-301 and SEZ29101800-302. Requirements with the statement, iLIDS shall, are for all configurations. Examples of requirements that are unique to a single configuration may be identified as iLIDS (-301) shall or iLIDS (-302) shall. Furthermore, to allow a requirement to encompass all configurations with an exception, the requirement may be designated as iLIDS (excluding -302) shall. Verification requirements for the iLIDS project are identified in the Verification Matrix (VM) provided in the iLIDS Verification and Validation Document, JSC-63966. The following definitions differentiate between requirements and other statements: Shall: This is the only verb used for the binding requirements. Should/May: These verbs are used for stating non-mandatory goals. Will: This verb is used for stating facts or declaration of purpose. A Definition of Terms table is provided in Appendix B to define those terms with specific tailored uses in this document.

  5. A high throughput single nucleotide polymorphism multiplex assay for parentage assignment in New Zealand sheep.

    Directory of Open Access Journals (Sweden)

    Shannon M Clarke

    Full Text Available Accurate pedigree information is critical to animal breeding systems to ensure the highest rate of genetic gain and management of inbreeding. The abundance of available genomic data, together with development of high throughput genotyping platforms, means that single nucleotide polymorphisms (SNPs are now the DNA marker of choice for genomic selection studies. Furthermore the superior qualities of SNPs compared to microsatellite markers allows for standardization between laboratories; a property that is crucial for developing an international set of markers for traceability studies. The objective of this study was to develop a high throughput SNP assay for use in the New Zealand sheep industry that gives accurate pedigree assignment and will allow a reduction in breeder input over lambing. This required two phases of development--firstly, a method of extracting quality DNA from ear-punch tissue performed in a high throughput cost efficient manner and secondly a SNP assay that has the ability to assign paternity to progeny resulting from mob mating. A likelihood based approach to infer paternity was used where sires with the highest LOD score (log of the ratio of the likelihood given parentage to likelihood given non-parentage are assigned. An 84 "parentage SNP panel" was developed that assigned, on average, 99% of progeny to a sire in a problem where there were 3,000 progeny from 120 mob mated sires that included numerous half sib sires. In only 6% of those cases was there another sire with at least a 0.02 probability of paternity. Furthermore dam information (either recorded, or by genotyping possible dams was absent, highlighting the SNP test's suitability for paternity testing. Utilization of this parentage SNP assay will allow implementation of progeny testing into large commercial farms where the improved accuracy of sire assignment and genetic evaluations will increase genetic gain in the sheep industry.

  6. Assigning on-ramp flows to maximize highway capacity

    Science.gov (United States)

    Wang, Qiao-Ming; Jiang, Rui; Sun, Xiao-Yan; Wang, Bing-Hong

    2009-09-01

    In this paper, we study the capacity of a highway with two on-ramps by using a cellular automata traffic flow model. We investigate how to improve the system capacity by assigning traffic flow to the two ramps. The system phase diagram is presented and different regions are classified. It is shown that in region I, in which both ramps are in free flow and the main road upstream of the ramps is in congestion, assigning a higher proportion of the demand to the upstream on-ramp could improve the overall flow, which is consistent with previous studies. This is explained through studying the spatiotemporal patterns and analytical investigations. In contrast, optimal assignment has not been observed in other regions. We point out that our result is robust and model independent under certain conditions.

  7. Improving load balance with flexibly assignable tasks

    Energy Technology Data Exchange (ETDEWEB)

    Pinar, Ali; Hendrickson, Bruce

    2003-09-09

    In many applications of parallel computing, distribution ofthe data unambiguously implies distribution of work among processors. Butthere are exceptions where some tasks can be assigned to one of severalprocessors without altering the total volume of communication. In thispaper, we study the problem of exploiting this flexibility in assignmentof tasks to improve load balance. We first model the problem in terms ofnetwork flow and use combinatorial techniques for its solution. Ourparametric search algorithms use maximum flow algorithms for probing on acandidate optimal solution value. We describe two algorithms to solve theassignment problem with \\logW_T and vbar P vbar probe calls, w here W_Tand vbar P vbar, respectively, denote the total workload and number ofproce ssors. We also define augmenting paths and cuts for this problem,and show that anyalgorithm based on augmenting paths can be used to findan optimal solution for the task assignment problem. We then consideracontinuous version of the problem, and formulate it as a linearlyconstrained optimization problem, i.e., \\min\\|Ax\\|_\\infty,\\; {\\rms.t.}\\;Bx=d. To avoid solving an intractable \\infty-norm optimization problem,we show that in this case minimizing the 2-norm is sufficient to minimizethe \\infty-norm, which reduces the problem to the well-studiedlinearly-constrained least squares problem. The continuous version of theproblem has the advantage of being easily amenable to parallelization.Our experiments with molecular dynamics and overlapped domaindecomposition applications proved the effectiveness of our methods withsignificant improvements in load balance. We also discuss how ourtechniques can be enhanced for heterogeneous systems.

  8. Turkish law and the UNCITRAL’s work on the assignment of receivables with a special reference to the assignment of future receivables.

    OpenAIRE

    Akseli, Orkun

    2007-01-01

    Raising finance by the assignment of receivables is an important financing technique and its regulation varies under different legal systems. The UNCITRAL Convention on the Assignment of Receivables in International Trade (“the UNCITRAL Convention”) was adopted in 2001 by the General Assembly. The UNCITRAL Convention was prepared to establish a sophisticated, comprehensive and potentially far-reaching model for the modernisation of domestic assignment laws of countries and a substantive step ...

  9. General requirements for pressure-retaining systems and components in CANDU nuclear power plants

    International Nuclear Information System (INIS)

    This standard specifies the general requirements for the design, fabrication and installation of pressure-retaining systems, components, and their supports in CANDU nuclear power plants. (16 figs., 2 tabs., 25 refs.)

  10. Extending and automating a Systems-Theoretic hazard analysis for requirements generation and analysis.

    Energy Technology Data Exchange (ETDEWEB)

    Thomas, John (Massachusetts Institute of Technology)

    2012-05-01

    Systems Theoretic Process Analysis (STPA) is a powerful new hazard analysis method designed to go beyond traditional safety techniques - such as Fault Tree Analysis (FTA) - that overlook important causes of accidents like flawed requirements, dysfunctional component interactions, and software errors. While proving to be very effective on real systems, no formal structure has been defined for STPA and its application has been ad-hoc with no rigorous procedures or model-based design tools. This report defines a formal mathematical structure underlying STPA and describes a procedure for systematically performing an STPA analysis based on that structure. A method for using the results of the hazard analysis to generate formal safety-critical, model-based system and software requirements is also presented. Techniques to automate both the analysis and the requirements generation are introduced, as well as a method to detect conflicts between the safety and other functional model-based requirements during early development of the system.

  11. Functional requirements for portable exhauster system to be used during saltwell pumping

    International Nuclear Information System (INIS)

    This document defines functional requirements for portable exhausters used to ventilate primary tanks during saltwell pumping, and provide back-up to primary and annulus ventilation systems at C-106 and AY-102

  12. 78 FR 47015 - Software Requirement Specifications for Digital Computer Software Used in Safety Systems of...

    Science.gov (United States)

    2013-08-02

    ... issued with a temporary identification as Draft Regulatory Guide, DG-1209 on August 22, 2012 (77 FR 50726... COMMISSION Software Requirement Specifications for Digital Computer Software Used in Safety Systems of... 1 of RG 1.172, ``Software Requirement Specifications for Digital Computer Software used in...

  13. 40 CFR 141.711 - Filtered system additional Cryptosporidium treatment requirements.

    Science.gov (United States)

    2010-07-01

    ... following filtration treatment in full compliance with subparts H, P, and T of this part (as applicable... Cryptosporidium treatment requirements. 141.711 Section 141.711 Protection of Environment ENVIRONMENTAL PROTECTION... Treatment for Cryptosporidium Treatment Technique Requirements § 141.711 Filtered system...

  14. 78 FR 79455 - Information Collection; System for Award Management Registration Requirements for Prime Grant...

    Science.gov (United States)

    2013-12-30

    ... Central Contractor Registration Requirements for Prime Grant Recipients (OMB Control Number 3090-0290... under consideration by an agency pursuant to 2 CFR Subtitle A, Chapter I, and Part 25 (75 FR 5672). This... ADMINISTRATION Information Collection; System for Award Management Registration Requirements for Prime...

  15. Flexibility Requirements concerning the Design of Synchronous E-Learning Systems

    Science.gov (United States)

    Jahn, Matthias; Piesche, Claudia; Jablonski, Stefan

    2012-01-01

    Purpose: Today's requirements concerning successful learning support comprise a variety of application scenarios. Therefore, the development of supporting software preferably aims at modular design. This article discusses requirements regarding flexibility of e-learning systems and presents important principles, which should be met by successful…

  16. Model-Based Requirements Analysis for Reactive Systems with UML Sequence Diagrams and Coloured Petri Nets

    DEFF Research Database (Denmark)

    Tjell, Simon; Lassen, Kristian Bisgaard

    2008-01-01

    In this paper, we describe a formal foundation for a specialized approach to automatically checking traces against real-time requirements. The traces are obtained from simulation of Coloured Petri Net (CPN) models of reactive systems. The real-time requirements are expressed in terms of a derivat...

  17. Compatibility of state assignments and pooling of information

    Science.gov (United States)

    Brun, Todd A.; Hsieh, Min-Hsiu; Perry, Christopher

    2015-07-01

    We say that two (or more) state assignments for one and the same quantum system are compatible if they could represent the assignments of observers with differing information about the system. A criterion for compatibility was proposed in [Phys. Rev. A 65, 032315 (2002), 10.1103/PhysRevA.65.032315]; however, this leaves unanswered the question of whether there are degrees of compatibility which could be represented by some quantitative measure, and whether there is a straightforward procedure whereby the observers can pool their information to arrive at a unique joint state assignment. We argue that such measures are only sensible given some assumption about what kind of information was used in making the state assignments in the first place, and that in general state assignments do not represent all of the information possessed by the observers. However, we examine one particular measure and show that it has a straightforward interpretation, assuming that the information was acquired from a particular type of measurement, and that in this case there is a natural rule for pooling information. We extend this measure to compatibility of states for k observers and show that the value is the solution to a semidefinite program. Similar compatibility measures can be defined for alternative notions of state compatibility, including post-Peierls and equal support compatibilities.

  18. Meta-Model and UML Profile for Requirements Management of Software and Embedded Systems

    Directory of Open Access Journals (Sweden)

    Arpinen Tero

    2011-01-01

    Full Text Available Software and embedded system companies today encounter problems related to requirements management tool integration, incorrect tool usage, and lack of traceability. This is due to utilized tools with no clear meta-model and semantics to communicate requirements between different stakeholders. This paper presents a comprehensive meta-model for requirements management. The focus is on software and embedded system domains. The goal is to define generic requirements management domain concepts and abstract interfaces between requirements management and system development. This leads to a portable requirements management meta-model which can be adapted with various system modeling languages. The created meta-model is prototyped by translating it into a UML profile. The profile is imported into a UML tool which is used for rapid evaluation of meta-model concepts in practice. The developed profile is associated with a proof of concept report generator tool that automatically produces up-to-date documentation from the models in form of web pages. The profile is adopted to create an example model of embedded system requirement specification which is built with the profile.

  19. A Study of Laser System Requirements for Application in Beam Diagnostics And Polarimetry at the ILC

    Energy Technology Data Exchange (ETDEWEB)

    Dixit, S.; Delerue, N.; Foster, B.; Howell, D.F.; Peach, K.; Quelch, G.; Qureshi, M.; Reichold, A.; /Oxford U.; Hirst, G.; Ross, I.; /Rutherford; Urakawa, J.; /KEK,; Soskov, V.; Variola, A.; Zomer, F.; /Orsay, LAL; Blair, G.A.; Boogert, S.T.; Boorman, G.; Bosco, A.; Driouichi, C.; Karataev, P.; /Royal Holloway, U. of London; Brachmann,; /SLAC

    2007-02-12

    Advanced laser systems will be essential for a range of diagnostics devices and polarimetry at the ILC. High average power, high beam quality, excellent stability and reliability will be crucial in order to deliver the information required to attain the necessary ILC luminosity as well as for efficient polarimetry. The key parameters are listed together with the R & D required to achieve the necessary laser system performance.

  20. Waste Receiving and Processing Facility Module 1 Data Management System software requirements specification

    International Nuclear Information System (INIS)

    This document provides the software requirements for Waste Receiving and Processing (WRAP) Module 1 Data Management System (DMS). The DMS is one of the plant computer systems for the new WRAP 1 facility (Project W-0126). The DMS will collect, store and report data required to certify the low level waste (LLW) and transuranic (TRU) waste items processed at WRAP 1 as acceptable for shipment, storage, or disposal