WorldWideScience

Sample records for open systems architecture

  1. Open architecture CNC system

    Energy Technology Data Exchange (ETDEWEB)

    Tal, J. [Galil Motion Control Inc., Sunnyvale, CA (United States); Lopez, A.; Edwards, J.M. [Los Alamos National Lab., NM (United States)

    1995-04-01

    In this paper, an alternative solution to the traditional CNC machine tool controller has been introduced. Software and hardware modules have been described and their incorporation in a CNC control system has been outlined. This type of CNC machine tool controller demonstrates that technology is accessible and can be readily implemented into an open architecture machine tool controller. Benefit to the user is greater controller flexibility, while being economically achievable. PC based, motion as well as non-motion features will provide flexibility through a Windows environment. Up-grading this type of controller system through software revisions will keep the machine tool in a competitive state with minimal effort. Software and hardware modules are mass produced permitting competitive procurement and incorporation. Open architecture CNC systems provide diagnostics thus enhancing maintainability, and machine tool up-time. A major concern of traditional CNC systems has been operator training time. Training time can be greatly minimized by making use of Windows environment features.

  2. Naval open systems architecture

    Science.gov (United States)

    Guertin, Nick; Womble, Brian; Haskell, Virginia

    2013-05-01

    For the past 8 years, the Navy has been working on transforming the acquisition practices of the Navy and Marine Corps toward Open Systems Architectures to open up our business, gain competitive advantage, improve warfighter performance, speed innovation to the fleet and deliver superior capability to the warfighter within a shrinking budget1. Why should Industry care? They should care because we in Government want the best Industry has to offer. Industry is in the business of pushing technology to greater and greater capabilities through innovation. Examples of innovations are on full display at this conference, such as exploring the impact of difficult environmental conditions on technical performance. Industry is creating the tools which will continue to give the Navy and Marine Corps important tactical advantages over our adversaries.

  3. Information security considerations in open systems architectures

    Energy Technology Data Exchange (ETDEWEB)

    Klein, S.A. (Atlantic Research Corp., Rockville, MD (United States)); Menendez, J.N. (Atlantic Research Corp., Hanover, MD (United States))

    1993-02-01

    This paper is part of a series of papers invited by the IEEE POWER CONTROL CENTER WORKING GROUP concerning the changing designs of modern control centers. Papers invited by the Working Group discuss the following issues: Benefits of Openness, Criteria for Evaluating Open EMS Systems, Hardware Design, Configuration Management, Security, Project Management, Data Bases, SCADA, Inter and Intra-System Communications, and Man Machine Interfaces.'' This paper discusses information security and issues related to its achievement in open systems architectures. Beginning with a discussion of the goals of information security and their relation to open systems, the paper provides examples of the threats to electric utility computer systems and the consequences associated with these threats, presents basic countermeasures applicable to all computer systems, and discusses issues specific to open systems architectures.

  4. The BWS Open Business Enterprise System Architecture

    Directory of Open Access Journals (Sweden)

    Cristian IONITA

    2011-01-01

    Full Text Available Business process management systems play a central role in supporting the business operations of medium and large organizations. This paper analyses the properties current business enterprise systems and proposes a new application type called Open Business Enterprise System. A new open system architecture called Business Workflow System is proposed. This architecture combines the instruments for flexible data management, business process management and integration into a flexible system able to manage modern business operations. The architecture was validated by implementing it into the DocuMentor platform used by major companies in Romania and US. These implementations offered the necessary data to create and refine an enterprise integration methodology called DMCPI. The final section of the paper presents the concepts, stages and techniques employed by the methodology.

  5. BWS Open System Architecture Security Assessment

    Directory of Open Access Journals (Sweden)

    Cristian Ionita

    2011-12-01

    Full Text Available Business process management systems play a central role in supporting the business operations of medium and large organizations. Because of this the security characteristics of these systems are becoming very important. The present paper describes the BWS architecture used to implement the open process aware information system DocuMentor. Using the proposed platform, the article identifies the security characteristics of such systems, shows the correlation between these characteristics and the security features implemented by the platform and presents examples of how the security of such systems can be enhanced using the extension mechanism.

  6. An Architecture for Open Learning Management Systems

    NARCIS (Netherlands)

    Avgeriou, Paris; Retalis, Simos; Skordalakis, Manolis

    2003-01-01

    There exists an urgent demand on defining architectures for Learning Management Systems, so that high-level frameworks for understanding these systems can be discovered, and quality attributes like portability, interoperability, reusability and modifiability can be achieved. In this paper we propose

  7. OPEN ARCHITECTURE CNC SYSTEM HITCNC AND KEY TECHNOLOGY

    Institute of Scientific and Technical Information of China (English)

    WANG Yongzhang; LIU Tao; FU Hongya; HAN Zhenyu

    2007-01-01

    Aiming at the characteristics of modularity and reconfigurable in open architecture computer numerical control (CNC) system, the open architecture CNC system, Harbin Institute of Technology computer numerical control (HITCNC), is researched and manufactured based on the interface standards. The system's external interfaces are coincident with the corresponding international standards, and the internal interfaces follow the open modular architecture controller (OMAC) agreement.In the research and manufacturing process, object-oriented technology is used to ensure thc openness of the HITCNC, and static programming is applied in the CNC system according to the idea of modularization disassembly. The HITCNC also actualizes real-time and unreal-time modules adopting real-time dynamical linked library (RTDLL) and component object model (COM). Finite state machine (FSM) is adopted to do dynamically modeling of HITCNC. The complete separation between the software and the hardware is achieved in the HITCNC by applying the SoftSERCANS technique.The application of the above key techniques decreases the programming workload greatly, and uses software programs replacing hardware functions, which offers plenty technique ensures for the openness of HITCNC. Finally, based on the HITCNC, a three-dimensional milling system is established.On the system, series experiments are done to validate the expandability and interchangeability of HITCNC. The results of the experiments show that the established open architecture CNC system HITCNC is correct and feasible, and has good openness.

  8. OpenRIMS: An Open Architecture Radiology Informatics Management System

    OpenAIRE

    Langer, Steve

    2002-01-01

    The benefits of an integrated picture archiving and communication system/radiology information system (PACS/RIS) archive built with open source tools and methods are 2-fold. Open source permits an inexpensive development model where interfaces can be updated as needed, and the code is peer reviewed by many eyes (analogous to the scientific model). Integration of PACS/RIS functionality reduces the risk of inconsistent data by reducing interfaces among databases that contain largely redundant i...

  9. Complex Modelling of Open System Design for Sustainable Architecture

    Science.gov (United States)

    Gu, Yan; Frazer, John

    This paper argues a model of complex system design for sustainable architecture within a framework of entropy evolution. The spectrum of sustainable architecture consists of the efficient use of energy and material resource in life-cycle of buildings, the active involvement of the occupants in micro-climate control within buildings, and the natural environmental context. The interactions of the parameters compose a complex system of sustainable architectural design, of which the conventional linear and fragmented design technologies are insufficient to indicate holistic and ongoing environmental performance. The complexity theory of dissipative structure states a microscopic formulation of open system evolution, which provides a system design framework for the evolution of building environmental performance towards an optimization of sustainability in architecture.

  10. A Multiview Visualisation Architecture for Open Distributed Systems

    NARCIS (Netherlands)

    Hughes, E.; Oldengarm, P.; van Halteren, Aart

    1998-01-01

    Program visualisation is an attractive way for understanding collaboration structures of complex distributed systems. By using the concepts of the open distributed processing-reference model (ODP-RM) as entities for visualisation, a multiview visualisation architecture is presented, which provides a

  11. Open architecture for health care systems: the European RICHE experience.

    Science.gov (United States)

    Frandji, B

    1997-01-01

    Groupe RICHE is bringing to the market of health IT the Open Systems approach allowing a new generation of health information systems to arise with benefit for patients, health care professionals, hospital managers, agencies and citizens. Groupe RICHE is a forum for exchanging information, expertise around open systems in health care. It is open to any organisation interested by open systems in health care and wanting to participate and influence the work done by its user, marketing and technical committees. The Technical Committee is in charge of the maintenance of the architecture and impact the results of industrial experiences on new releases. Any Groupe RICHE member is entitled to participate to this process. This unique approach in Europe allows health care professionals to benefit from applications supporting their business processes, including providing a cooperative working environment, a shared electronic record, in an integrated system where the information is entered only once, customised according to the user needs and available to the administrative applications. This allows Hospital managers to satisfy their health care professionals, to smoothly migrate from their existing environment (protecting their investment), to choose products in a competitive environment, being able to mix and match system components and services from different suppliers, being free to change suppliers without having to replace their existing system (minimising risk), in line with national and regional strategies. For suppliers, this means being able to commercialise products well fitted to their field of competence in a large market, reducing investments and increasing returns. The RICHE approach also allows agencies to define a strategy, allowing to create a supporting infrastructure, organising the market leaving enough freedom to health care organisations and suppliers. Such an approach is based on the definition of an open standard architecture. The RICHE esprit project

  12. Open architecture controller solution for custom machine systems

    Science.gov (United States)

    Anderson, Ronald L.; Reagin, J. M.; Garner, T. D.; Sweeny, T. E.

    1997-01-01

    In today's marketplace, product quality and price have become requirements for entry and are no longer sufficient to differentiate one's product and gain a competitive advantage. A key to competition in the future will be a company's ability to respond quickly to a rapidly-changing global marketplace. Developers of manufacturing equipment must play a role in the reduction of the product development cycle time by increasing the flexibility of their equipment and decreasing its cost and time to market. This paper will discuss the implementation of an open-architecture machine controller on a flip-chip placement machine and how this implementation supports the goals of reduced development time and increased equipment flexibility. The following subjects are discussed: 1) Issues related to the selection of a standard operating system, including real-time performance, preemptive multi-tasking, multi-threaded applications, and development tools. 2) The use of a common API for motion, and I/O. 3) Use of a rapid application development and object-oriented programming techniques on the machine controller to shorten development time and support code reuse. 4) Specific hardware and software issues related to the implementation of the flip chip controller. This includes hardware and software implementation details, controller performance, and human interface issues.

  13. Adaptive compensation of sculptured surface machining errors by open architecture manufacturing system

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    Presents the adaptive compensation of sculptured surfacemachining errors by using the open architecture intelligent manufacturing system to ensure real-time high-precision machining of sculptured surface, and the tool deflection model constructed for prediction of machining errors to be compensated and analysis of the effect of tool deflection on machining errors, and concludes from experimental results that the open architecture intelligent manufacturing system can effectively improve the machining precision and reduce the machining errors by 30%.

  14. The Use of Open Source Software for Open Architecture System on CNC Milling Machine

    Directory of Open Access Journals (Sweden)

    Dalmasius Ganjar Subagio

    2012-03-01

    Full Text Available Computer numerical control (CNC milling machine system cannot be separated from the software required to follow the provisions of the Open Architecture capabilities that have portability, extend ability, interoperability, and scalability. When a prescribed period of a CNC milling machine has passed and the manufacturer decided to discontinue it, then the user will have problems for maintaining the performance of the machine. This paper aims to show that the using of open source software (OSS is the way out to maintain engine performance. With the use of OSS, users no longer depend on the software built by the manufacturer because OSS is open and can be developed independently. In this paper, USBCNC V.3.42 is used as an alternative OSS. The test result shows that the work piece is in match with the desired pattern. The test result shows that the performance of machines using OSS has similar performance with the machine using software from the manufacturer. 

  15. OPEN ARCHITECTURE FOR INTERNET BASED TELE-ROBOTIC SYSTEM

    Institute of Scientific and Technical Information of China (English)

    Li Xiaoming; Yang Canjun; Chen Ying

    2004-01-01

    Building an Internet based tele-robotic system requires the developers being proficient in computer theory, network technology, control theory, etc. A Flexible, open structured and module based framework for tele-control system is proposed on the basis of abstraction and analysis of existing Internet-based control systems. This framework is designed following the peer to peer (P2P) distributed computing model. As a key to the system, the XML based ontology of resources/modules/peers is discussed, so do the model for dynamically allocating of resources, based on which the coordination among modules or peers can then be implemented. The experiment system and its experimental results prove the feasibility of the framework and its ease to use.

  16. Development of a PC-based Open Architecture Software-CNC System

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    As a key technology in the field of advanced manufacturing, an open architecture controller is studied. In order to develop an open architecture software-CNC system on personal computer (PC) according to open modular architecture controllers (OMAC). First, the software and hardware platform is chosen and software realization methodology for the CNC system is determined. Second, static modeling methods of an open architecture controller inclusive of object-oriented (OO) programming technology, dynamic link library (DLL)technology and system modules partition are investigated. Third, the dynamical behavioral modeling and the data flow representation of open architecture controller are discussed, which are both described in hierarchy finite state machine (FSM) model. Fourth, a reusable software module model is established to develop software function module library. Finally, a 3-axis milling machine tool test-bed, named for HIT-CNC, is successfully designed by means of the constructed software function module library and the system configuring method.The experimental results show that, besides increasing the degree of reusability and openness, application of above-mentioned methodology leads to significant decrease of development time as well as maintenance cost.

  17. Modular Open System Architecture for Reducing Contamination Risk in the Space and Missile Defense Supply Chain

    Science.gov (United States)

    Seasly, Elaine

    2015-01-01

    To combat contamination of physical assets and provide reliable data to decision makers in the space and missile defense community, a modular open system architecture for creation of contamination models and standards is proposed. Predictive tools for quantifying the effects of contamination can be calibrated from NASA data of long-term orbiting assets. This data can then be extrapolated to missile defense predictive models. By utilizing a modular open system architecture, sensitive data can be de-coupled and protected while benefitting from open source data of calibrated models. This system architecture will include modules that will allow the designer to trade the effects of baseline performance against the lifecycle degradation due to contamination while modeling the lifecycle costs of alternative designs. In this way, each member of the supply chain becomes an informed and active participant in managing contamination risk early in the system lifecycle.

  18. RETROFITTING AN AUTOMATIC MANUFACTURING WORKCELL FOR STUDY OF OPEN ARCHITECTURE INTEGRATION OF MECHATRONIC SYSTEMS

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    Research work on plug-and-play open architecture and object-oriented mechatronic system integration is described. The original controllers of two popular industrial robot manipulators Puma 560 and IBM 7575 are completely retrofitted and integrated with a conveyor system to form a robot workcell. This robot workcell can be programmed to run under the Ch language environment. The outline of the Ch language, and the retrofitting strategy of the robot workcell will be described. A sample application program for simulated assembly operations of this robot workcell will be presented to demonstrate the underlying principles of open architecture integration of mechatronic systems under the programming paradigm of the Ch language environment.

  19. Modular, flexible, and expandable high-performance image archiving and retrieving open-architecture system

    Science.gov (United States)

    Chen, Y. P.

    1992-07-01

    In today''s economy, it takes significant funds to establish a high-performance image archival and retrieval system for any image application. One cost effective approach is to build the system in multiple phases but there is concern that technology is advancing rapidly and the original system may not be able to take advantage of new features. The concept of an open- architecture modular, flexible and expandable system is an essential element to achieving a high-performance image archival and retrieval system within a realistic short period of time. This paper introduces a proposal for a modular, flexible, and expandable image archival and retrieval open-architecture system to stimulate discussion and thinking. It will cover the following areas: (1) data archival and retrieval requirements such as storage capacity and data management, (2) data communication and distribution requirements using local area networks and/or wide area networks, (3) the architectural requirements such as adopting industry standards for hardware and software, and (4) an example of such open-architecture system to demonstrate the feasibility of implementing a modular, flexible, and expandable high- performance image archival and retrieval system.

  20. Streamlining the Process of Acquiring Secure Open Architecture Software Systems

    Science.gov (United States)

    2013-04-01

    Office of Small Business Programs, Department of the Navy  Director, Office of Acquisition Resources and Analysis ( ARA )  Deputy Assistant...innovative ways and means to acquire/develop component-based OA software systems that are subject to diverse, heterogeneous IP licenses (Alspaugh... heterogeneously licensed systems. Journal of the Association for Information Systems, 11(11), 730–755. Anderson, S. (2012, July-September). Software

  1. Achieving Better Buying Power for Mobile Open Architecture Software Systems Through Diverse Acquisition Scenarios

    Science.gov (United States)

    2016-04-30

    L., Clements, P., & Kazman, R. (2003). Software architecture in practice (2nd ed.). New York, NY: Addison - Wesley Professional. Bollinger, T. (2003...Open systems and COTS products. New York, NY: Addison - Wesley . Reed, H., Benito, P., Collens, J., & Stein, F. (2012, June). Supporting agile C2

  2. Modernization Solution for Legacy Banking System Using an Open Architecture

    Directory of Open Access Journals (Sweden)

    Constantin Marian MATEI

    2012-01-01

    Full Text Available Banks are still using legacy systems as the core of their business is comprised within such sys-tems. Since the technology and client demands are changing rapidly, the banks have to adapt their systems in order to be competitive. The issue is to identify correctly what are the bank users preferences in terms of software reliability and how modern is the system For instance, there are users who enjoy working using the old screen format, and there are users who enjoy working with newer layouts, Web interfaces, and so on. We need also to know the constraints generated by the usage of legacy systems, and how these systems can be improved or replaced. The scope of the article is to present a solution of modernizing a legacy banking system by using a SOA approach. The research is based on the modernization of a legacy system developed in COBOL/400 under IBM iSeries. The modernization process uses a SOA ap-proach using JAVA technologies.

  3. Using Open Systems Architecture to Revolutionize Capability Acquisition

    Science.gov (United States)

    2015-05-13

    modular components for future flexibility • Stabilize platform production – segregate from rapid change Develop/Maintain Capability Product Lines... Stabilize platform production – segregate from rapid change Develop/Maintain Capability Product Lines • Reduce & manage vendor-locked & stove-piped...systems Emphasis is on both business & technology innovations Unlocking Potential 7 2010 2020 Automobile platforms 223 154 Units based on 10 ten

  4. Streamlining the Process of Acquiring Secure Open Architecture Software Systems

    Science.gov (United States)

    2013-10-08

    million copies of CS and its descendants ( Makuch , 2011). ^Åèìáëáíáçå=oÉëÉ~êÅÜ=mêçÖê~ã= dê~Çì~íÉ=pÅÜççä=çÑ=_ìëáåÉëë=C=mìÄäáÅ=mçäáÅó - 101 - k~î~ä...Addison-Wesley. Lamsweerde, A. v. (2009). Requirements engineering: From system goals to UML models to software specifications. Wiley. Makuch , E. (2011

  5. 开放式CNC指令系统的研究%Study of the Open-Architecture CNC System

    Institute of Scientific and Technical Information of China (English)

    胡占齐

    2001-01-01

    提出了面向系统的和面向用户的开放式数控指令系统的概念。对于面向系统的开放式指令,给出了基于PMAC运动控制器的应用实例。对于面向用户的开放式指令,给出了复合指令的定义、实现方法及应用实例。开放式指令系统可以使数控系统具有更大的灵活性。%The open-architecture CNC(Computer Numerical Control) system is one of the developing trends of NC technology. It is generally considered that the open CNC system consists of open- architecture hardwares and softwares. An open-architecture hardware system is made up of a personal computer, a speed control unit, a position control unit and an embedded PLC. An open architecture software system means that a CNC software is separated into some modules with standard interfaces. The open-architecture hardware and software have been reported in many papers.   Another character of the open-architecture CNC system, the open code system, is proposed in this paper. In an open architecture NC code system, the code system is independent from the compiling system, but connected to it through middle codes. The compiling system compiles only middle codes, and NC codes are defined through middle codes and are saved in NC code files. The open architecture NC code system can be adapted easily to different mechanical tools by rewriting the NC code files for different mechanical tools. Users of the open- architecture NC code system will be able to modify and configure their own NC code system easily by modifying NC code files.   Openness to systems and openness to users, two aspects of the open architecture code system, are explained, and some examples are given. Openness to systems means that manufacturers of the mechanical tools can construct different NC code systems for different mechanical tools. "Openness to users" means that users of the mechanical tools can expand their NC code system during its operation. The open architecture NC

  6. NC flame pipe cutting machine tool based on open architecture CNC system

    Institute of Scientific and Technical Information of China (English)

    Xiaogen NIE; Yanbing LIU

    2009-01-01

    Based on the analysis of the principle and flame movement of a pipe cutting machine tool, a retrofit NC flame pipe cutting machine tool (NFPCM) that can meet the demands of cutting various pipes is proposed. The paper deals with the design and implementation of an open architecture CNC system for the NFPCM, many of whose aspects are similar to milling machines; however, different from their machining processes and control strategies. The paper emphasizes on the NC system structure and the method for directly creating the NC file according to the cutting type and parameters. Further, the paper develops the program and sets up the open and module NC system.

  7. Investigating the Acquisition of Software Systems that Rely on Open Architecture and Open Source Software

    Science.gov (United States)

    2010-03-01

    Copyright (c) 1996-2008, Daniel Stenberg <daniel@haxx.se>. 16. PostgreSQL Database Management System 17. FreeType. Copyright (c) 2007 The FreeType...may not be open for access, review, modification, or possible redis - tribution [10]. If proprietary, they often cannot be redistributed, and so such

  8. Open Architecture Data System for NASA Langley Combined Loads Test System

    Science.gov (United States)

    Lightfoot, Michael C.; Ambur, Damodar R.

    1998-01-01

    The Combined Loads Test System (COLTS) is a new structures test complex that is being developed at NASA Langley Research Center (LaRC) to test large curved panels and cylindrical shell structures. These structural components are representative of aircraft fuselage sections of subsonic and supersonic transport aircraft and cryogenic tank structures of reusable launch vehicles. Test structures are subjected to combined loading conditions that simulate realistic flight load conditions. The facility consists of two pressure-box test machines and one combined loads test machine. Each test machine possesses a unique set of requirements or research data acquisition and real-time data display. Given the complex nature of the mechanical and thermal loads to be applied to the various research test articles, each data system has been designed with connectivity attributes that support both data acquisition and data management functions. This paper addresses the research driven data acquisition requirements for each test machine and demonstrates how an open architecture data system design not only meets those needs but provides robust data sharing between data systems including the various control systems which apply spectra of mechanical and thermal loading profiles.

  9. Position paper: researching and developing open architectures for national health information systems in developing African countries

    CSIR Research Space (South Africa)

    Moodley, D

    2011-08-01

    Full Text Available and include an open and participatory approach that encourages reuse and sharing of artifacts and experiences [10]. The framework should o er a generalized methodology and suite of tools that can be used by many countries following customization... implementation. The development of an health enterprise architectural framework (HEAF) and an architectural artifact repository (HEART) are two of HEAL?s current activities towards creating an open architectural framework. HIS designers and implementers...

  10. Open system architecture for condition based maintenance applied to a hydroelectric power plant

    Energy Technology Data Exchange (ETDEWEB)

    Amaya, E.J.; Alvares, A.J. [University of Brasilia (UnB), DF (Brazil). Mechanical and Mechatronic Dept.], Emails: eamaya@unb.br, alvares@AlvaresTech.com; Gudwin, R.R. [State University of Campinas (UNICAMP), SP (Brazil). Computer Engineering and Industrial Automation Dept.], E-mail: gudwin@dca.fee.unicamp.br

    2009-07-01

    The hydroelectric power plant of Balbina is implementing a condition based maintenance system applying an open, modular and scalable integrated architecture to provide comprehensive solutions and support to the end users like operational and maintenance team. The system called SIMPREBAL (Predictive Maintenance System of Balbina) is advocate of open standards, in particular through collaborative research programmers. In the developing is clearly understands the need for both, industry standards and a simple to use software development tool chain, supporting the development of complex condition based maintenance systems with multiple partners. The Open System Architecture for Condition Based Maintenance (OSA-CBM) is a standard that consider seven hierarchic layers that represent a logic transition or performed data flow from the data acquisition layer, through the intermediates layers as signal processing, condition monitor, health assessment, prognostics and decision support, to arrive to the presentation layer. SIMPREBAL is being implementing as an OSA-CBM software framework and tool set that allows the creation of truly integrated, comprehensive maintenance solutions through the internet. This paper identifies specific benefits of the application of the OSA-CBM in comprehensive solutions of condition based maintenance for a hydroelectric power plant. (author)

  11. An Open CNC Based Integrated Measuring, Modeling and Manufacturing System Architecture

    Institute of Scientific and Technical Information of China (English)

    WANG Huabing; LIU Weijun

    2006-01-01

    A new architecture based on open-architecture CNC of an integrated measuring, modeling and manufacturing system is presented. A 3-axis vertical milling structure is used to achieve the manufacturing function. And a computer vision camera is to be set up on the holder of the milling machine to capture the images of the work-piece and a image data acquisition card is used to translate the image data to the control computer, which acts as the measuring subsystem. Through processing the image data the model of the work-piece is established which plays the role of modeling subsystem. A motion control card is inserted into an industry computer to construct an open CNC system of the type of NC embedded PC which is more sophisticated than other new technologies on open CNC. The embedded motion card burdens the real-time tasks of the system and the IPC does the other management and planning tasks. The IPC together with the motion control card command the three axes of the system to accomplish the manufacturing and measuring functions and further the modeling function.

  12. Opening up Architectures of Software-Intensive Systems: A Functional Decomposition to Support System Comprehension

    Science.gov (United States)

    2007-10-01

    as on a state-of-the- art survey on system architecture recovery and comprehension. Following the conception of this functional decomposition, a...consideration the findings contained in a state-of- the- art survey on system architecture recovery and comprehension that was carried out as a previous phase...constituantes. Synthèse Fournit la capacité de combiner plusieurs faits qui ont été extraits pour former un nouveau tout à un niveau d’abstraction

  13. Investigating Advances in the Acquisition of Systems Based on Open Architecture and Open Source Software

    Science.gov (United States)

    2011-08-01

    Copyright 2003-2008 Rodrigo B. Oliveira 4. UnityScript, Copyright 2005-2008 Rodrigo B. Oliveira 5. OpenAL cross platform audio library, Copyright...not know. ACM Computing Surveys, (in press). [5] Hauge, O., Ayala , C. and Conradi, R. (2010). Adoption of Open Source Software in Software- Intensive

  14. Systemic Architecture

    DEFF Research Database (Denmark)

    Poletto, Marco; Pasquero, Claudia

    2012-01-01

    design protocols developed to describe the city as a territory of self-organization. Collecting together nearly a decade of design experiments by the authors and their practice, ecoLogicStudio, the book discusses key disciplinary definitions such as ecologic urbanism, algorithmic architecture, bottom......This is a manual investigating the subject of urban ecology and systemic development from the perspective of architectural design. It sets out to explore two main goals: to discuss the contemporary relevance of a systemic practice to architectural design, and to share a toolbox of informational......-up or tactical design, behavioural space and the boundary of the natural and the artificial realms within the city and architecture. A new kind of "real-time world-city" is illustrated in the form of an operational design manual for the assemblage of proto-architectures, the incubation of proto...

  15. Building highly available control system applications with Advanced Telecom Computing Architecture and open standards

    Science.gov (United States)

    Kazakov, Artem; Furukawa, Kazuro

    2010-11-01

    Requirements for modern and future control systems for large projects like International Linear Collider demand high availability for control system components. Recently telecom industry came up with a great open hardware specification - Advanced Telecom Computing Architecture (ATCA). This specification is aimed for better reliability, availability and serviceability. Since its first market appearance in 2004, ATCA platform has shown tremendous growth and proved to be stable and well represented by a number of vendors. ATCA is an industry standard for highly available systems. On the other hand Service Availability Forum, a consortium of leading communications and computing companies, describes interaction between hardware and software. SAF defines a set of specifications such as Hardware Platform Interface, Application Interface Specification. SAF specifications provide extensive description of highly available systems, services and their interfaces. Originally aimed for telecom applications, these specifications can be used for accelerator controls software as well. This study describes benefits of using these specifications and their possible adoption to accelerator control systems. It is demonstrated how EPICS Redundant IOC was extended using Hardware Platform Interface specification, which made it possible to utilize benefits of the ATCA platform.

  16. Open Architecture Standard for NASA's Software-Defined Space Telecommunications Radio Systems

    Science.gov (United States)

    Reinhart, Richard C.; Johnson, Sandra K.; Kacpura, Thomas J.; Hall, Charles S.; Smith, Carl R.; Liebetreu, John

    2008-01-01

    NASA is developing an architecture standard for software-defined radios used in space- and ground-based platforms to enable commonality among radio developments to enhance capability and services while reducing mission and programmatic risk. Transceivers (or transponders) with functionality primarily defined in software (e.g., firmware) have the ability to change their functional behavior through software alone. This radio architecture standard offers value by employing common waveform software interfaces, method of instantiation, operation, and testing among different compliant hardware and software products. These common interfaces within the architecture abstract application software from the underlying hardware to enable technology insertion independently at either the software or hardware layer. This paper presents the initial Space Telecommunications Radio System (STRS) Architecture for NASA missions to provide the desired software abstraction and flexibility while minimizing the resources necessary to support the architecture.

  17. Challenges in the application of modular open system architecture to weapons

    Science.gov (United States)

    Shaver, Jonathan; Rose, Leo; Young, Quinn; Christensen, Jacob

    2016-05-01

    The overarching objective for Flexible Weapons is to replace current inventory weapons that will not fully utilize the increased capabilities of 6th generation platforms, with a single weapons kit made up of flexible, open architecture components. Flexible Weapon will develop a common architecture to enable modular subsystems to achieve flexible weapons capability while allowing technology refresh at the pace of technology discovery in an affordable and sustainable design. The various combinations of weapons to address multiple missions must be 100% compatible with 6th generation delivery platforms (fighters, bombers, RPAs) and backwards compatible with 4th and 5th generation platforms.

  18. Achieving Better Buying Power through Acquisition of Open Architecture Software Systems. Volume 2 Understanding Open Architecture Software Systems: Licensing and Security Research and Recommendations

    Science.gov (United States)

    2016-01-06

    of Defense (DoD) and military services in  free  and  open   source   software  (OSS) first appeared in the past five or so years [cf. Bol03]. More  recently...shared development; collaborative buying;  donation; sponsorship;  free / open   source   software  (e.g., Government OSS – ​GOSS​); and others  [Hanf13...2007).  Free / Open   Source   Software  Development: Recent Research  Results and Methods, in M. Zelkowitz (Ed.), ​Advances in Computers​, 69, 243­295.    19

  19. Open architecture robot control based on Matlab/Simulink and a dSPACE real time system

    Science.gov (United States)

    Heuer, Kerstin; Pokar, Gero; Hesselbach, Juergen

    2004-03-01

    The elements of an open architecture robot control system developed using Matlab/Simulink and a real time system are described. It offers the opportunity to control almost every robotic system (serial or parallel) with up to six axes while commercial robot controls are often designed for serial kinematic systems and can hardly be adapted to control robots with parallel structures. The described open architecture robot control programmed in Matlab/Simulink and ANSI-C is a modular system. To adapt the control to a new robotic structure it is necessary to add the transformation algorithms, position control algorithms, inputs and outputs and machine specific error states to the pre-programmed modules of the system. These modules are programmed by using Simulink elements extended by special functions of the real time system and so called S-Functions that are programmed in C-Code. In the control new functionalities can be implemented easily by adding new modules and connecting them with the present system. A pre-designed graphical user interface provides most of the input buttons and display information needed for a robot control. Graphical buttons or displays can be added and connected with the required signal from Matlab/Simulink by drag and drop. An application example of a parallel robot shows the functionalities of the control.

  20. Naval Open Architecture Machinery Control Systems for Next Generation Integrated Power Systems

    Science.gov (United States)

    2012-05-01

    Step-Down Converters for High Voltage Direct Current ( HVDC ) Transmission Systems Zonal Electrical Distribution Systems For NGIPS, multifunction...Transmission ( HVDC ),  Distributed Generation, and  Energy Storage applications. The focus was on high power applications ranging from one to

  1. Addressing Challenges in the Acquisition of Secure Software Systems With Open Architectures

    Science.gov (United States)

    2012-04-30

    Director, Office of Acquisition Resources and Analysis ( ARA )  Deputy Assistant Secretary of the Navy, Acquisition & Procurement  Director of Open...Asuncion, 2010; Scacchi & Alspaugh, 2008) may therefore be extendable to also address OA systems with heterogeneous software security license rights and... heterogeneously licensed systems. In Proceedings of the 17th IEEE International Requirements Engineering Conference (pp. 24–33). Alspaugh, T. A., Asuncion, H

  2. A REST-ful interpretation for embedded modular systems based on open architecture

    Science.gov (United States)

    Lyke, James

    2016-05-01

    The much-anticipated revolution of the "Internet of things" (IoT) is expected to generate one trillion internet devices within the next 15 years, mostly in the form of simple wireless sensor devices. While this revolution promises to transform silicon markets and drive a number of disruptive changes in society, it is also the case that the protocols, complexity, and security issues of extremely large dynamic, co-mingled networks is still poorly understood. Furthermore, embedded system developers, to include military and aerospace users, have largely ignored the potential (good and bound) of the cloudlike, possibly intermingling networks having variable structure to how future systems might be engineered. In this paper, we consider a new interpretation of IoT inspired modular architecture strategies involving the representational state transfer (REST) model, in which dynamic networks with variable structure employ stateless application programming interface (API) concepts. The power of the method, which extends concepts originally developed for space plug-and-play avionics, is that it allows for the fluid co-mingling of hardware and software in networks whose structure can overlap and evolve. Paradoxically, these systems may have the most stringent determinism and fault-tolerant needs. In this paper we review how RESTful APIs can potentially be used to design, create, test, and deploy systems rapidly while addressing security and referential integrity even when the nodes of many systems might physically co-mingle. We will also explore ways to take advantage of the RESTful paradigm for fault tolerance and what extensions might be necessary to deal with high-performance and determinism.

  3. Investigating Advances in the Acquisition of Secure Systems Based on Open Architecture, Open Source Software, and Software Product Lines

    Science.gov (United States)

    2012-01-27

    Dahmann, 1999], CORBA , MS .NET, Enterprise Java Beans, and GNU Lesser General Public License [LGPL] libraries). = = ^Åèìáëáíáçå=oÉëÉ~êÅÜ=mêçÖê...through common interfaces, such as High Level Architecture, CORBA , or Enterprise Java Beans. Connectors can also limit the propagation of some license

  4. Achieving Better Buying Power through Acquisition of Open Architecture Software Systems: Volume 1

    Science.gov (United States)

    2016-01-06

    2009. [Sca10] Scacchi, W. (2010). The Future of Research in Free / Open Source Software Development, Proc. ACM Workshop Future of Software Engineering...review and approve choices between functionally similar low or no cost open source software components, and commercially priced closed source ...NavalPostgraduate School, Monterey, CA. [Ke12] Kenyon, H. (2012). DoD, Intel Officials Bullish On Open Source Software ; Government- wide Software

  5. Defining and using open architecture levels

    Science.gov (United States)

    Cramer, M. A.; Morrison, A. W.; Cordes, B.; Stack, J. R.

    2012-05-01

    Open architecture (OA) within military systems enables delivery of increased warfighter capabilities in a shorter time at a reduced cost.i In fact in today's standards-aware environment, solutions are often proposed to the government that include OA as one of its basics design tenets. Yet the ability to measure and assess OA in an objective manner, particularly at the subsystem/component level within a system, remains an elusive proposition. Furthermore, it is increasingly apparent that the establishment of an innovation ecosystem of an open business model that leverages thirdparty development requires more than just technical modifications that promote openness. This paper proposes a framework to migrate not only towards technical openness, but also towards enabling and facilitating an open business model, driven by third party development, for military systems. This framework was developed originally for the U.S. Navy Littoral and Mine Warfare community; however, the principles and approach may be applied elsewhere within the Navy and Department of Defense.

  6. An Open Specification for Space Project Mission Operations Control Architectures

    Science.gov (United States)

    Hooke, A.; Heuser, W. R.

    1995-01-01

    An 'open specification' for Space Project Mission Operations Control Architectures is under development in the Spacecraft Control Working Group of the American Institute for Aeronautics and Astro- nautics. This architecture identifies 5 basic elements incorporated in the design of similar operations systems: Data, System Management, Control Interface, Decision Support Engine, & Space Messaging Service.

  7. Modular reconfigurable machines incorporating modular open architecture control

    CSIR Research Space (South Africa)

    Padayachee, J

    2008-01-01

    Full Text Available degrees of freedom on a single platform. A corresponding modular Open Architecture Control (OAC) system is presented. OAC overcomes the inflexibility of fixed proprietary automation, ensuring that MRMs provide the reconfigurability and extensibility...

  8. Investigating Advances in the Acquisition of Secure Systems Based on Open Architectures

    Science.gov (United States)

    2012-08-30

    chocolate factory: Mixed reality industrial ...worked as a software developer, team lead, and manager in industry , and as a computer scientist at the Naval Research Laboratory on the Software...systems and SPLs (Berzins, 2012), and the improvement of software system acquisition through workforce upgrades and government– industry teaming

  9. How the Navy Can Use Open Systems Architecture to Revolutionize Capability Acquisition: The Naval OSA Strategy Can Yield Multiple Benefits

    Science.gov (United States)

    2015-04-30

    Åèìáëáíáçå=oÉëÉ~êÅÜ=mêçÖê~ãW= `êÉ~íáåÖ=póåÉêÖó=Ñçê=fåÑçêãÉÇ=`Ü~åÖÉ= - 108 - that can be (1) defined and managed by government/ industry consortia and...consolidation of platform-unique architectures into an open product-line architecture defined and managed by government/ industry consortia that will...a holistic OSA approach are government/ industry consortia , which help ^Åèìáëáíáçå=oÉëÉ~êÅÜ=mêçÖê~ãW= `êÉ~íáåÖ=póåÉêÖó=Ñçê=fåÑçêãÉÇ=`Ü~åÖÉ= - 116

  10. Open architecture for multilingual parallel texts

    CERN Document Server

    Benitez, M T Carrasco

    2008-01-01

    Multilingual parallel texts (abbreviated to parallel texts) are linguistic versions of the same content ("translations"); e.g., the Maastricht Treaty in English and Spanish are parallel texts. This document is about creating an open architecture for the whole Authoring, Translation and Publishing Chain (ATP-chain) for the processing of parallel texts.

  11. Achieving Better Buying Power Through Acquisition of Open Architecture Software Systems for Web-Based and Mobile Devices

    Science.gov (United States)

    2015-04-30

    reciprocity for shared development, (9) collaborative buying, (10) donation, (11) sponsored development, (12) free / open source software (e.g., Government OSS...review and approve choices between functionally similar open source software (OSS) components, and commercially priced closed source software (CSS...OWF) is a government open source software (GOSS) effort that is central to such agile OA system development. The OZONE family of products includes

  12. Open architecture for rapid deployment of capability

    Science.gov (United States)

    Glassman, Jacob

    2016-05-01

    Modern warfare has drastically changed from conventional to non-conventional and from fixed threats to dynamic ones over the past several decades. This unprecedented fundamental shift has now made our adversaries and their weapons more nebulous and ever changing. Our current acquisition system however is not suited to develop, test and deploy essential capability to counter these dynamic threats in time to combat them. This environment requires a new infrastructure in our system design to rapidly adopt capabilities that we do not currently plan for or even know about. The key to enabling this rapid implementation is Open Architecture in acquisition. The DoD has shown it can rapidly prototype capabilities such as unmanned vehicles but has severely struggled in moving from the prototyping to deployment. A major driver of this disconnect is the lack of established infrastructure to employ said capability such as launch and recovery systems and command and control. If we are to be successful in transitioning our rapid capability to the warfighter we must implement established well defined interfaces and enabling technologies to facilitate the rapid adoption of capability so the warfighter has the tools to effectively counter the threat.

  13. The Open Science Grid status and architecture

    Energy Technology Data Exchange (ETDEWEB)

    Pordes, R; Petravick, D [Fermi National Accelerator Laboratory (United States); Kramer, B; Olson, D [Lawrence Berkeley National Laboratory (United States); Livny, M; Roy, A [University of Wisconsin, Madison (United States); Avery, P [University of Florida (United States); Blackburn, K [California Institute of Technology (United States); Wenaus, T [Brookhaven National Laboratory (United States); Wuerthwein, F [University of California, San Diego (United States); Foster, I; Gardner, R; Wilde, M [University of Chicago (United States); Blatecky, A; McGee, J [Renaissance Computing Institute (United States); Quick, R [Indiana University (United States)], E-mail: ruth@fnal.gov

    2008-07-15

    The Open Science Grid (OSG) provides a distributed facility where the Consortium members provide guaranteed and opportunistic access to shared computing and storage resources. The OSG project[1] is funded by the National Science Foundation and the Department of Energy Scientific Discovery through Advanced Computing program. The OSG project provides specific activities for the operation and evolution of the common infrastructure. The US ATLAS and US CMS collaborations contribute to and depend on OSG as the US infrastructure contributing to the World Wide LHC Computing Grid on which the LHC experiments distribute and analyze their data. Other stakeholders include the STAR RHIC experiment, the Laser Interferometer Gravitational-Wave Observatory (LIGO), the Dark Energy Survey (DES) and several Fermilab Tevatron experiments- CDF, D0, MiniBoone etc. The OSG implementation architecture brings a pragmatic approach to enabling vertically integrated community specific distributed systems over a common horizontal set of shared resources and services. More information can be found at the OSG web site: www.opensciencegrid.org.

  14. The Open Science Grid status and architecture

    Energy Technology Data Exchange (ETDEWEB)

    Pordes, Ruth; Petravick, Don; /Fermilab; Kramer, Bill; Olsen, James D.; /LBL, Berkeley; Livny, Miron; Roy, Gordon A.; /Wisconsin U., Madison; Avery, Paul Ralph; /Florida U.; Blackburn, Kent; /Caltech; Wenaus, Torre J.; /Brookhaven; Wuerthwein, Frank K.; /UC, San Diego; Foster, Ian; /Chicago U. /Indiana U.

    2007-09-01

    The Open Science Grid (OSG) provides a distributed facility where the Consortium members provide guaranteed and opportunistic access to shared computing and storage resources. The OSG project[1] is funded by the National Science Foundation and the Department of Energy Scientific Discovery through Advanced Computing program. The OSG project provides specific activities for the operation and evolution of the common infrastructure. The US ATLAS and US CMS collaborations contribute to and depend on OSG as the US infrastructure contributing to the World Wide LHC Computing Grid on which the LHC experiments distribute and analyze their data. Other stakeholders include the STAR RHIC experiment, the Laser Interferometer Gravitational-Wave Observatory (LIGO), the Dark Energy Survey (DES) and several Fermilab Tevatron experiments- CDF, D0, MiniBoone etc. The OSG implementation architecture brings a pragmatic approach to enabling vertically integrated community specific distributed systems over a common horizontal set of shared resources and services. More information can be found at the OSG web site: www.opensciencegrid.org.

  15. GITEWS, an extensible and open integration platform for manifold sensor systems and processing components based on Sensor Web Enablement and the principles of Service Oriented Architectures

    Science.gov (United States)

    Haener, Rainer; Waechter, Joachim; Fleischer, Jens; Herrnkind, Stefan; Schwarting, Herrmann

    2010-05-01

    The German Indonesian Tsunami Early Warning System (GITEWS) is a multifaceted system consisting of various sensor types like seismometers, sea level sensors or GPS stations, and processing components, all with their own system behavior and proprietary data structure. To operate a warning chain, beginning from measurements scaling up to warning products, all components have to interact in a correct way, both syntactically and semantically. Designing the system great emphasis was laid on conformity to the Sensor Web Enablement (SWE) specification by the Open Geospatial Consortium (OGC). The technical infrastructure, the so called Tsunami Service Bus (TSB) follows the blueprint of Service Oriented Architectures (SOA). The TSB is an integration concept (SWE) where functionality (observe, task, notify, alert, and process) is grouped around business processes (Monitoring, Decision Support, Sensor Management) and packaged as interoperable services (SAS, SOS, SPS, WNS). The benefits of using a flexible architecture together with SWE lead to an open integration platform: • accessing and controlling heterogeneous sensors in a uniform way (Functional Integration) • assigns functionality to distinct services (Separation of Concerns) • allows resilient relationship between systems (Loose Coupling) • integrates services so that they can be accessed from everywhere (Location Transparency) • enables infrastructures which integrate heterogeneous applications (Encapsulation) • allows combination of services (Orchestration) and data exchange within business processes Warning systems will evolve over time: New sensor types might be added, old sensors will be replaced and processing components will be improved. From a collection of few basic services it shall be possible to compose more complex functionality essential for specific warning systems. Given these requirements a flexible infrastructure is a prerequisite for sustainable systems and their architecture must be

  16. Blue guardian: an open architecture for rapid ISR demonstration

    Science.gov (United States)

    Barrett, Donald A.; Borntrager, Luke A.; Green, David M.

    2016-05-01

    Throughout the Department of Defense (DoD), acquisition, platform integration, and life cycle costs for weapons systems have continued to rise. Although Open Architecture (OA) interface standards are one of the primary methods being used to reduce these costs, the Air Force Rapid Capabilities Office (AFRCO) has extended the OA concept and chartered the Open Mission System (OMS) initiative with industry to develop and demonstrate a consensus-based, non-proprietary, OA standard for integrating subsystems and services into airborne platforms. The new OMS standard provides the capability to decouple vendor-specific sensors, payloads, and service implementations from platform-specific architectures and is still in the early stages of maturation and demonstration. The Air Force Research Laboratory (AFRL) - Sensors Directorate has developed the Blue Guardian program to demonstrate advanced sensing technology utilizing open architectures in operationally relevant environments. Over the past year, Blue Guardian has developed a platform architecture using the Air Force's OMS reference architecture and conducted a ground and flight test program of multiple payload combinations. Systems tested included a vendor-unique variety of Full Motion Video (FMV) systems, a Wide Area Motion Imagery (WAMI) system, a multi-mode radar system, processing and database functions, multiple decompression algorithms, multiple communications systems, and a suite of software tools. Initial results of the Blue Guardian program show the promise of OA to DoD acquisitions, especially for Intelligence, Surveillance and Reconnaissance (ISR) payload applications. Specifically, the OMS reference architecture was extremely useful in reducing the cost and time required for integrating new systems.

  17. OpenRRArch: An open, robust and reliable architecture for controlling autonomous robots

    Directory of Open Access Journals (Sweden)

    Fredy Hernán Martínez Sarmiento

    2017-01-01

    Full Text Available Context: The control and navigation systems of autonomous robots constitute a dynamic field of research in robotics. The possible solutions to problems are often evaluated with laboratory prototypes in order to determine their real performance. We propose in this paper an architecture for the design and development of robotic systems (particularly autonomous multi-robot Systems that facilitate the work in laboratory due to an open robust and reliable architecture. Method: The architecture is supported in open source hardware and software. The operation and communication strategy is characterized by a low consumption of resources, both in processing and communication, and real-time operation. As developement platform and Operating System, we used Linux: the communication scheme and the embedded systems run on a 32-bit processor, with a 16-bit instruction set (not ARM, but with Harvard architecture, at 80 MHz (Tensilica Xtensa LX106 for the implementation of the agents. The tools used allow the solution to be bothe efficient and inexpensive. Results: The architecture has been successfully applied in the implementation of a strategy of navigation for a set of small autonomous robots. A set of robots were provided with wireless communication capability, minimum capacity of environmental sensing (obstacle detection and a navigation algorithm based on population sizes (mimicking the bacterial Quorum Sensing. The system is implemented with great ease, demonstrating both the viability of the navigation strategy and the versatility, robustness and scalability of the OpenRRArch architecture. Conclusions: The proposed architecture constitutes a solution for the construction of distributed control systems, in particular multi-agent robotic systems. It enables the rapid, low-cost and high-performance implementation of systems with real-time cooperation and communication capabilities. The architecture allows the integration of agents with different processing

  18. Open software architecture for east articulated maintenance arm

    Energy Technology Data Exchange (ETDEWEB)

    Wu, Jing, E-mail: wujing@ipp.ac.cn [Institute of Plasma Physics Chinese Academy of Sciences, 350 Shushanhu Rd Hefei Anhui (China); Lappeenranta University of Technology, Skinnarilankatu 34 Lappeenranta (Finland); Wu, Huapeng [Lappeenranta University of Technology, Skinnarilankatu 34 Lappeenranta (Finland); Song, Yuntao [Institute of Plasma Physics Chinese Academy of Sciences, 350 Shushanhu Rd Hefei Anhui (China); Li, Ming [Lappeenranta University of Technology, Skinnarilankatu 34 Lappeenranta (Finland); Yang, Yang [Institute of Plasma Physics Chinese Academy of Sciences, 350 Shushanhu Rd Hefei Anhui (China); Alcina, Daniel A.M. [Lappeenranta University of Technology, Skinnarilankatu 34 Lappeenranta (Finland)

    2016-11-01

    Highlights: • A software requirement of serial-articulated robot for EAST assembly and maintains is presented. • A open software architecture of the robot is developed. • A component-based model distribution system with real-time communication of the robot is constructed. - Abstract: For the inside inspection and the maintenance of vacuum vessel in the EAST, an articulated maintenance arm is developed. In this article, an open software architecture developed for the EAST articulated maintenance arm (EAMA) is described, which offers a robust and proper performance and easy-going experience based on standard open robotic platform OROCOS. The paper presents a component-based model software architecture using multi-layer structure: end layer, up layer, middle, and down layer. In the end layer the components are defined off-line in the task planner manner. The components in up layer complete the function of trajectory plan. The CORBA, as a communication framework, is adopted to exchange the data between the distributed components. The contributors use Real-Time Workshop from the MATLAB/Simulink to generate the components in the middle layer. Real-time Toolkit guarantees control applications running in the hard real-time mode. Ethernets and the CAN bus are used for data transfer in the down layer, where the components implement the hardware functions. The distributed architecture of control system associates each processing node with each joint, which is mapped to a component with all functioning features of the framework.

  19. Instrumented Architectural Simulation System

    Science.gov (United States)

    Delagi, B. A.; Saraiya, N.; Nishimura, S.; Byrd, G.

    1987-01-01

    Simulation of systems at an architectural level can offer an effective way to study critical design choices if (1) the performance of the simulator is adequate to examine designs executing significant code bodies, not just toy problems or small application fragements, (2) the details of the simulation include the critical details of the design, (3) the view of the design presented by the simulator instrumentation leads to useful insights on the problems with the design, and (4) there is enough flexibility in the simulation system so that the asking of unplanned questions is not suppressed by the weight of the mechanics involved in making changes either in the design or its measurement. A simulation system with these goals is described together with the approach to its implementation. Its application to the study of a particular class of multiprocessor hardware system architectures is illustrated.

  20. Sustainable, Reliable Mission-Systems Architecture

    Science.gov (United States)

    O'Neil, Graham; Orr, James K.; Watson, Steve

    2007-01-01

    A mission-systems architecture, based on a highly modular infrastructure utilizing: open-standards hardware and software interfaces as the enabling technology is essential for affordable and sustainable space exploration programs. This mission-systems architecture requires (a) robust communication between heterogeneous system, (b) high reliability, (c) minimal mission-to-mission reconfiguration, (d) affordable development, system integration, and verification of systems, and (e) minimal sustaining engineering. This paper proposes such an architecture. Lessons learned from the Space Shuttle program and Earthbound complex engineered system are applied to define the model. Technology projections reaching out 5 years are mde to refine model details.

  1. Smashing the Stovepipe: Leveraging the GMSEC Open Architecture and Advanced IT Automation to Rapidly Prototype, Develop and Deploy Next-Generation Multi-Mission Ground Systems

    Science.gov (United States)

    Swenson, Paul

    2017-01-01

    Satellite/Payload Ground Systems - Typically highly-customized to a specific mission's use cases - Utilize hundreds (or thousands!) of specialized point-to-point interfaces for data flows / file transfers Documentation and tracking of these complex interfaces requires extensive time to develop and extremely high staffing costs Implementation and testing of these interfaces are even more cost-prohibitive, and documentation often lags behind implementation resulting in inconsistencies down the road With expanding threat vectors, IT Security, Information Assurance and Operational Security have become key Ground System architecture drivers New Federal security-related directives are generated on a daily basis, imposing new requirements on current / existing ground systems - These mandated activities and data calls typically carry little or no additional funding for implementation As a result, Ground System Sustaining Engineering groups and Information Technology staff continually struggle to keep up with the rolling tide of security Advancing security concerns and shrinking budgets are pushing these large stove-piped ground systems to begin sharing resources - I.e. Operational / SysAdmin staff, IT security baselines, architecture decisions or even networks / hosting infrastructure Refactoring these existing ground systems into multi-mission assets proves extremely challenging due to what is typically very tight coupling between legacy components As a result, many "Multi-Mission" ops. environments end up simply sharing compute resources and networks due to the difficulty of refactoring into true multi-mission systems Utilizing continuous integration / rapid system deployment technologies in conjunction with an open architecture messaging approach allows System Engineers and Architects to worry less about the low-level details of interfaces between components and configuration of systems GMSEC messaging is inherently designed to support multi-mission requirements, and

  2. Architecture for Survivable System Processing (ASSP)

    Science.gov (United States)

    Wood, Richard J.

    1991-11-01

    The Architecture for Survivable System Processing (ASSP) Program is a multi-phase effort to implement Department of Defense (DOD) and commercially developed high-tech hardware, software, and architectures for reliable space avionics and ground based systems. System configuration options provide processing capabilities to address Time Dependent Processing (TDP), Object Dependent Processing (ODP), and Mission Dependent Processing (MDP) requirements through Open System Architecture (OSA) alternatives that allow for the enhancement, incorporation, and capitalization of a broad range of development assets. High technology developments in hardware, software, and networking models, address technology challenges of long processor life times, fault tolerance, reliability, throughput, memories, radiation hardening, size, weight, power (SWAP) and security. Hardware and software design, development, and implementation focus on the interconnectivity/interoperability of an open system architecture and is being developed to apply new technology into practical OSA components. To insure for widely acceptable architecture capable of interfacing with various commercial and military components, this program provides for regular interactions with standardization working groups (e.g.) the International Standards Organization (ISO), American National Standards Institute (ANSI), Society of Automotive Engineers (SAE), and Institute of Electrical and Electronic Engineers (IEEE). Selection of a viable open architecture is based on the widely accepted standards that implement the ISO/OSI Reference Model.

  3. Linux-based Platform for Open Architecture Controller and Its Modular Developing Method

    Institute of Scientific and Technical Information of China (English)

    迟永琳; 王宇晗; 吴祖育; 蔡建国

    2003-01-01

    Linux-based Platform for Open Architecture Controller ( POAC ), a new open architecture controller and its modular developing method are discussed. POAC divides the application software of controller into the developing system and the application system. In the developing system, PAOC abstracts a series of function modules with unified data interface and function interface. In the application system, POAC defines the model of the architecture module, realizing the interoperability and interchangeability between the architecture modules. The modular developing method entitles the users to make up an application system with some architecture modules, which consist of a set of function modules. The modular developing method decreases the developing time from the standard of controller architecture to the product.

  4. The architecture of a modern military health information system.

    Science.gov (United States)

    Mukherji, Raj J; Egyhazy, Csaba J

    2004-06-01

    This article describes a melding of a government-sponsored architecture for complex systems with open systems engineering architecture developed by the Institute for Electrical and Electronics Engineers (IEEE). Our experience in using these two architectures in building a complex healthcare system is described in this paper. The work described shows that it is possible to combine these two architectural frameworks in describing the systems, operational, and technical views of a complex automation system. The advantage in combining the two architectural frameworks lies in the simplicity of implementation and ease of understanding of automation system architectural elements by medical professionals.

  5. CHRONOS architecture: Experiences with an open-source services-oriented architecture for geoinformatics

    Science.gov (United States)

    Fils, D.; Cervato, C.; Reed, J.; Diver, P.; Tang, X.; Bohling, G.; Greer, D.

    2009-01-01

    CHRONOS's purpose is to transform Earth history research by seamlessly integrating stratigraphic databases and tools into a virtual on-line stratigraphic record. In this paper, we describe the various components of CHRONOS's distributed data system, including the encoding of semantic and descriptive data into a service-based architecture. We give examples of how we have integrated well-tested resources available from the open-source and geoinformatic communities, like the GeoSciML schema and the simple knowledge organization system (SKOS), into the services-oriented architecture to encode timescale and phylogenetic synonymy data. We also describe on-going efforts to use geospatially enhanced data syndication and informally including semantic information by embedding it directly into the XHTML Document Object Model (DOM). XHTML DOM allows machine-discoverable descriptive data such as licensing and citation information to be incorporated directly into data sets retrieved by users. ?? 2008 Elsevier Ltd. All rights reserved.

  6. Telemetry Modernization with Open Architecture Software-Defined Radio Technology

    Science.gov (United States)

    2016-01-01

    As the market demand for use of the existing Telemetry Modernization with Open Architecture Software-Defined Radio Technology Lincoln Laboratory...is conducting a software-defined radio technology development program to improve the way telemetered information is collected and processed...architecture software-defined radio technology . Approved for public release; distribution unlimited (SMDC-5102 26OCT2015). This material is based

  7. Design of a real-time open architecture controller for a reconfigurable machine tool

    CSIR Research Space (South Africa)

    Masekamela, I

    2008-11-01

    Full Text Available The paper presents the design and the development of a real-time, open architecture controller that is used for control of reconfigurable manufacturing tools (RMTs) in reconfigurable manufacturing systems (RMS). The controller that is presented can...

  8. Multi-layered Security Approaches for a Modular Open Network Architecture-based Satellite

    OpenAIRE

    Shirley, Brandon; Young, Quinn; Wegner, Peter; Christensen, Jacob; Janicik, Jeffrey

    2014-01-01

    A growing trend in satellite development includes shortening the development lifecycle for hardware and software, cost reduction, and promoting reuse for future missions. Department of Defense (DoD) acquisition policies mandate system providers use Open Systems Architecture (OSA) where feasible. Modular Open Network Architecture (MONA) is a subset of OSA and paves the way to achieve cost reduction and reuse during a reduced development lifecycle. MONA approaches provide opportunities to enhan...

  9. Converting a Manned LCU into an Unmanned Surface Vehicle (USV): An Open Systems Architecture (OSA) Case Study

    Science.gov (United States)

    2014-09-01

    Level ar\\d an overnll Sy !<tem Level. Tke Cmli Le,·el cOr\\SiSlS Mtbe contrQIS, monitoring. automation. etc. of the systems. requin..--ə to run the boat...grout1d control s tation. etc. Most of the craft-level systetns are go1 [)fld most systems-level sys (ctns arc not government owned. For instance, the...craft-for-sale.html. Yaakob, O., Z. Mohamed, M. S. Hanafiah, D. T. Suprayogi, M. P. Abdul Ghani, F. A. Adnan, M. A. A. Mukti, and J. Din. 2012

  10. Study on Open-architecture Network Motion Control System%开放式网络运动控制系统的研究

    Institute of Scientific and Technical Information of China (English)

    廖高华

    2011-01-01

    Considering the development trend of open NC system, this paper presented an open- architecture network motion controller system based on the technique of motion control. It used motion controller as its control system kernel and industrial control computer as its system sustaining cell, also introduced system function, hardware configuration and the method of software design base on PCI bus, Winsock process manages off- line tasks. Complete the development of the client and server programming and networks of movement control system base on the C/S structure. Experiment show that the same wavebetween the actual speed of electrical and given speed. Delay is very small (4ms), constant speed along the passage of the volatility ( ± 1 % ) , error is only ± 3 pulses, run smoothly up and no speed super. The motion controller system a-chieves some excellent capabilities such as precise trajectory, little responding time, high precision in fixing position.%结合开放式系统需求,开发了一种开放式网络运动控制系统.采用“NC嵌入PC”结构,采用基于PCI总线的运动控制卡完成实时控制,以Windows为开发平台,利用Winsock控件,完成了开发客户端和控制服务器端的程序设计,实现了基于C/S结构的网络运动控制系统.实验表明,速度曲线中电机实际转速与给定转速波形基本相同,延时很小(4 ms),匀速段速度波动很小(±1%),误差只有±3脉冲,运行平稳没有速度超调,定位准确实时可靠,控制灵活、速度运行宽,具有友好的人机界面接口设计.

  11. Analysis of Architecture Pattern Usage in Legacy System Architecture Documentation

    NARCIS (Netherlands)

    Harrison, Neil B.; Avgeriou, Paris

    2008-01-01

    Architecture patterns are an important tool in architectural design. However, while many architecture patterns have been identified, there is little in-depth understanding of their actual use in software architectures. For instance, there is no overview of how many patterns are used per system or wh

  12. Analysis of Architecture Pattern Usage in Legacy System Architecture Documentation

    NARCIS (Netherlands)

    Harrison, Neil B.; Avgeriou, Paris

    2008-01-01

    Architecture patterns are an important tool in architectural design. However, while many architecture patterns have been identified, there is little in-depth understanding of their actual use in software architectures. For instance, there is no overview of how many patterns are used per system or

  13. On Information System Security Architecture

    Institute of Scientific and Technical Information of China (English)

    ChunfangJiang; ChaoyuanYue; JianguoZuo

    2004-01-01

    The current studies on security architecture and information system security architecture (ISSA) are surveyed in this paper, and some types and their features of ISSA are discussed. Then, the structural elements of ISSA are analyzed, and the constructing steps for ISSA are proposed.

  14. Blue Guardian: open architecture intelligence, surveillance, and reconnaissance (ISR) demonstrations

    Science.gov (United States)

    Shirey, Russell G.; Borntrager, Luke A.; Soine, Andrew T.; Green, David M.

    2017-04-01

    The Air Force Research Laboratory (AFRL) - Sensors Directorate has developed the Blue Guardian program to demonstrate advanced sensing technology utilizing open architectures in operationally relevant environments. Blue Guardian has adopted the core concepts and principles of the Air Force Rapid Capabilities Office (AFRCO) Open Mission Systems (OMS) initiative to implement an open Intelligence, Surveillance and Reconnaissance (ISR) platform architecture. Using this new OMS standard provides a business case to reduce cost and program schedules for industry and the Department of Defense (DoD). Blue Guardian is an early adopting program of OMS and provides much needed science and technology improvements, development, testing, and implementation of OMS for ISR purposes. This paper presents results and lessons learned under the Blue Guardian Project Shepherd program which conducted Multi-INT operational demonstrations in the Joint Interagency Task Force - South (JIATF-S) and USSOUTHCOM area of operations in early 2016. Further, on-going research is discussed to enhance Blue Guardian Multi-INT ISR capabilities to support additional mission sets and platforms, including unmanned operations over line of sight (LOS) and beyond line of sight (BLOS) datalinks. An implementation of additional OMS message sets and services to support off-platform sensor command and control using OMS/UCI data structures and dissemination of sensor product data/metadata is explored. Lastly, the Blue Guardian team is working with the AgilePod program to use OMS in a full Government Data Rights Pod to rapidly swap these sensors to different aircraft. The union of the AgilePod (which uses SOSA compliant standards) and OMS technologies under Blue Guardian programs is discussed.

  15. Architecture and Key Technology of Distributed Intelligent Open Systems%分布式智能开放运营架构及关键技术

    Institute of Scientific and Technical Information of China (English)

    童晓渝; 张云勇; 房秉毅

    2011-01-01

    High-speed large-bandwidth networks and growth in rich Internet applications has brought unprecedented pressure to bear on telecom operators.Consequently, operators need to play to the advantages of their networks, make good use of their large customer bases, and expand their business resources in service,platform, and interface. Network and customer resources should be integrated in order to create new business ecosystems. This paper describes new threats and challenges facing telecom operators and analyzes how leading operators are handling transformation in terms of operations and business model. A new concept called Distributed Intelligent Open System (DIOS)-a public computing communication network-is proposed. The architecture and key technologies of DIOS is discussed in detail.%随着电信运营商3G网络的部署、网络带宽的提速以及互联网应用高速发展的冲击,电信运营商面临前所未有的压力.运营商需要发挥网络和客户优势,转向对业务、平台、客户、界面等商业资源运营,并且整合网络与客户资源,创造新的商业模式.文章首先给出了电信行业面临的新威胁与挑战,分析电信运营商转型的优势、运营和商业模式转型的方法,提出分布式智能开放系统(DIOS),重点讨论了系统架构和关键技术.

  16. Open modular architecture controls at GM Powertrain: technology and implementation

    Science.gov (United States)

    Bailo, Clark P.; Yen, C. J.

    1997-01-01

    General Motors Powertrain Group (GMPTG) has been the leader in implementing open, modular architecture controller (OMAC) technologies in its manufacturing applications since 1986. The interest in OMAC has been greatly expanded for the past two years because of the advancement of personal computer technologies and the publishing of the OMAC whitepaper by the US automotive companies stating the requirements of OMAC technologies in automotive applications. The purpose of this paper is to describe the current OMAC projects and the future direction of implementation at GMPTG. An overview of the OMAC project and the definition of the OMAC concept are described first. The rationale of pursuing open technologies is explained from the perspective of GMPTG in lieu of its agile manufacturing strategy. Examples of existing PC-based control applications are listed to demonstrate the extensive commitment to PC-based technologies that has already been put in place. A migration plan form PC-based to OMAC-based systems with the thorough approach of validation are presented next to convey the direction that GMPTG is taking in implementing OMAC technologies. Leveraged technology development projects are described to illustrate the philosophy and approaches toward the development of OMAC technologies at GMPTG. Finally, certain implementation issues are discussed to emphasize efforts that are still required to have successful implementations of OMAC systems.

  17. The architecture of open source applications

    CERN Document Server

    Wilson, Greg

    2012-01-01

    Architects look at thousands of buildings during their training, and study critiques of those buildings written by masters. In contrast, most software developers only ever get to know a handful of large programs well - usually programs they wrote themselves - and never study the great programs of history. As a result, they repeat one another's mistakes rather than building on one another's successes. This book's goal is to change that. In it, the authors of twenty-five open source applications explain how their software is structured, and why. What are each program's major components? How do they interact? And what did their builders learn during their development? In answering these questions, the contributors to this book provide unique insights into how they think.

  18. Architecture Descriptions. A Contribution to Modeling of Production System Architecture

    DEFF Research Database (Denmark)

    Jepsen, Allan Dam; Hvam, Lars

    The subject of this PhD dissertation is architecture-centric design and the description of production system architecture. Companies are facing demands for the development and production of new products at an ever increasing rate, as the market life of products decreases and the rate at which...... design. This research contributes to the vocabulary and understanding of the architecture phenomenon. A conceptual framework is provided which allows for conceptualization of the architecture phenomenon, and how it applies within production system design. To aid the companies in the operational design...... and handling of production system architecture, research is conducted into the description of production system architecture, including what an architecture description contains in general and what it should describe for production systems specifically. The contribution in this area of research consists...

  19. Parallel Programming using OpenCL on Modern Architectures

    DEFF Research Database (Denmark)

    Nielsen, Allan Svejstrup; Engsig-Karup, Allan Peter; Dammann, Bernd

    as they are at graphics. To conclude the presentation of OpenCL as a language for compute, a matrix-matrix multiplication example is devised and optimized for the VLIW4, Tesla and Fermi architectures. The performance is measured as a function of both matrix and work-group size and results are discussed. Where applicable...

  20. An Open Distributed Architecture for Sensor Networks for Risk Management

    Directory of Open Access Journals (Sweden)

    Ralf Denzer

    2008-03-01

    Full Text Available Sensors provide some of the basic input data for risk management of natural andman-made hazards. Here the word ‘sensors’ covers everything from remote sensingsatellites, providing invaluable images of large regions, through instruments installed on theEarth’s surface to instruments situated in deep boreholes and on the sea floor, providinghighly-detailed point-based information from single sites. Data from such sensors is used inall stages of risk management, from hazard, vulnerability and risk assessment in the preeventphase, information to provide on-site help during the crisis phase through to data toaid in recovery following an event. Because data from sensors play such an important part inimproving understanding of the causes of risk and consequently in its mitigation,considerable investment has been made in the construction and maintenance of highlysophisticatedsensor networks. In spite of the ubiquitous need for information from sensornetworks, the use of such data is hampered in many ways. Firstly, information about thepresence and capabilities of sensor networks operating in a region is difficult to obtain dueto a lack of easily available and usable meta-information. Secondly, once sensor networkshave been identified their data it is often difficult to access due to a lack of interoperability between dissemination and acquisition systems. Thirdly, the transfer and processing ofinformation from sensors is limited, again by incompatibilities between systems. Therefore,the current situation leads to a lack of efficiency and limited use of the available data thathas an important role to play in risk mitigation. In view of this situation, the EuropeanCommission (EC is funding a number of Integrated Projects within the Sixth FrameworkProgramme concerned with improving the accessibility of data and services for riskmanagement. Two of these projects: ‘Open Architecture and Spatial Data

  1. System architecture with XML

    CERN Document Server

    Daum, Berthold

    2002-01-01

    XML is bringing together some fairly disparate groups into a new cultural clash: document developers trying to understand what a transaction is, database analysts getting upset because the relational model doesn''t fit anymore, and web designers having to deal with schemata and rule based transformations. The key to rising above the confusion is to understand the different semantic structures that lie beneath the standards of XML, and how to model the semantics to achieve the goals of the organization. A pure architecture of XML doesn''t exist yet, and it may never exist as the underlying technologies are so diverse. Still, the key to understanding how to build the new web infrastructure for electronic business lies in understanding the landscape of these new standards.If your background is in document processing, this book will show how you can use conceptual modeling to model business scenarios consisting of business objects, relationships, processes, and transactions in a document-centric way. Database des...

  2. A Monstrous Alliance: Open Architecture and Common Space

    Directory of Open Access Journals (Sweden)

    Gökhan Kodalak

    2015-06-01

    Full Text Available The contemporary built environment is absorbed by a dualist spatial organisation model divided between public and private space. Within this restrictive grammar, public space, despite its democratic promise, is heavily indoctrinated and anesthetised under the hegemony of regulatory apparatuses and control mechanisms, whereas private space has catalysed, if not directly engendered, prevalent spatial problems, such as ever-increasing slums, discriminatory gentrification and ecological catastrophes, despite its self-approving assurance. Underneath this dysfunctional couple lies common space, a third category that constitutes the shared spatial commonwealth of our entire natural and cultural milieu.The multitude, as an emerging body of self-organising political and spatial actors, has already started to unearth the potential of common space, actualising emergent and interactive spatial configurations all around the world. In this new, self-organisational model, architects do not become obsolete; rather, they leave behind their conventional roles as submissive experts and cosmetic speculators. By becoming anomalous architects, they affirm and augment the opening of spatial and architectural milieus to a myriad of new possibilities.This article theorises the possibility of a monstrous alliance between anomalous architects and the multitude, between open architectures and common space. Two specific case studies accompany these theoretical frameworks: the Gezi Event (Istanbul, 2013 demonstrates the actual emancipation of common space through the self-organising activity of the multitude, while Open-Cube (Antalya, 2013 attests to an early open architecture experiment based on the potentiating activity of the anomalous architect. 

  3. Systems Architecture for a Nationwide Healthcare System.

    Science.gov (United States)

    Abin, Jorge; Nemeth, Horacio; Friedmann, Ignacio

    2015-01-01

    From a national level to give Internet technology support, the Nationwide Integrated Healthcare System in Uruguay requires a model of Information Systems Architecture. This system has multiple healthcare providers (public and private), and a strong component of supplementary services. Thus, the data processing system should have an architecture that considers this fact, while integrating the central services provided by the Ministry of Public Health. The national electronic health record, as well as other related data processing systems, should be based on this architecture. The architecture model described here conceptualizes a federated framework of electronic health record systems, according to the IHE affinity model, HL7 standards, local standards on interoperability and security, as well as technical advice provided by AGESIC. It is the outcome of the research done by AGESIC and Systems Integration Laboratory (LINS) on the development and use of the e-Government Platform since 2008, as well as the research done by the team Salud.uy since 2013.

  4. Learning Systems: Architecture and Intervention.

    Science.gov (United States)

    Buxton, Bill

    1984-01-01

    Discusses tasks, resources, and feedback, the three basic elements in the architecture of learning systems; analyzes these elements in relation to on-the-job learning; and discusses interventions to improve these processes and provide a positive contribution to the productivity of the organization by helping people learn. (MBR)

  5. Architectures for block Toeplitz systems

    NARCIS (Netherlands)

    Bouras, Ilias; Glentis, George-Othon; Kalouptsidis, Nicholas

    1996-01-01

    In this paper efficient VLSI architectures of highly concurrent algorithms for the solution of block linear systems with Toeplitz or near-to-Toeplitz entries are presented. The main features of the proposed scheme are the use of scalar only operations, multiplications/divisions and additions, and th

  6. COMPARISON OF OPEN-SOURCE PAAS ARCHITECTURAL COMPONENTS

    Directory of Open Access Journals (Sweden)

    Mohan Krishna Varma Nandimandalam

    2016-01-01

    Full Text Available Cloud computing is a widely used technology with three basic service models such as Software as a Service (SaaS, Platform as a Service (PaaS, and Infrastructure as a Service (IaaS. This paper focuses on the PaaS model. Open source PaaS model provides choice of cloud, developer framework and application service. In this paper detailed study of four open PaaS packages such as AppScale, Cloud Foundry, Cloudify, and OpenShift are explained with the considerable architectural component aspects. We also explained some other PaaS packages like Stratos, Stakato and mOSAIC briefly. In this paper we present the comparative study of major open PaaS packages.

  7. System structures in architecture

    DEFF Research Database (Denmark)

    Vibæk, Kasper Sánchez

    2012-01-01

    Afhandlingen introducerer begrebet systemstruktur i den arkitektoniske designproces som en måde at indskyde et systemniveau i arkitektur og byggeri, der ligger mellem generel byggeteknik og specifikke arkitektoniske resultater. For at operationalisere en sådan systemstruktur udarbejdes en systems...

  8. Electrical system architecture

    Science.gov (United States)

    Algrain, Marcelo C.; Johnson, Kris W.; Akasam, Sivaprasad; Hoff, Brian D.

    2008-07-15

    An electrical system for a vehicle includes a first power source generating a first voltage level, the first power source being in electrical communication with a first bus. A second power source generates a second voltage level greater than the first voltage level, the second power source being in electrical communication with a second bus. A starter generator may be configured to provide power to at least one of the first bus and the second bus, and at least one additional power source may be configured to provide power to at least one of the first bus and the second bus. The electrical system also includes at least one power consumer in electrical communication with the first bus and at least one power consumer in electrical communication with the second bus.

  9. Design of a real-time open architecture controller for reconfigurable machine tool

    CSIR Research Space (South Africa)

    Masekamela, I

    2008-06-01

    Full Text Available modular structure in form of modular machines and open architecture controllers that can quickly change the physical structure and appropriately adjust the control system to adapt to the new production requirements. The paper aims to present the design...

  10. The Modernization of the Aegis Fleet with Open Architecture

    Science.gov (United States)

    2011-05-18

    Management to a Common Architecture – Provide Consistent Functional Allocation, Data Representation and Attributes – Incorporate Reusable System Track...Document MMSP Multi‐Mission Signal Processor Aegis (not an acronym) Greek Shield of  Zeus MS MicroSoft ALIS Aegis LAN Interconnect System NIFC‐CA

  11. Deep Space Network information system architecture study

    Science.gov (United States)

    Beswick, C. A.; Markley, R. W. (Editor); Atkinson, D. J.; Cooper, L. P.; Tausworthe, R. C.; Masline, R. C.; Jenkins, J. S.; Crowe, R. A.; Thomas, J. L.; Stoloff, M. J.

    1992-01-01

    The purpose of this article is to describe an architecture for the DSN information system in the years 2000-2010 and to provide guidelines for its evolution during the 1990's. The study scope is defined to be from the front-end areas at the antennas to the end users (spacecraft teams, principal investigators, archival storage systems, and non-NASA partners). The architectural vision provides guidance for major DSN implementation efforts during the next decade. A strong motivation for the study is an expected dramatic improvement in information-systems technologies--i.e., computer processing, automation technology (including knowledge-based systems), networking and data transport, software and hardware engineering, and human-interface technology. The proposed Ground Information System has the following major features: unified architecture from the front-end area to the end user; open-systems standards to achieve interoperability; DSN production of level 0 data; delivery of level 0 data from the Deep Space Communications Complex, if desired; dedicated telemetry processors for each receiver; security against unauthorized access and errors; and highly automated monitor and control.

  12. Open quantum system identification

    CERN Document Server

    Schirmer, Sophie G; Zhou, Weiwei; Gong, Erling; Zhang, Ming

    2012-01-01

    Engineering quantum systems offers great opportunities both technologically and scientifically for communication, computation, and simulation. The construction and operation of large scale quantum information devices presents a grand challenge and a major issue is the effective control of coherent dynamics. This is often in the presence of decoherence which further complicates the task of determining the behaviour of the system. Here, we show how to determine open system Markovian dynamics of a quantum system with restricted initialisation and partial output state information.

  13. 基于光纤的开放式架构水下生产控制系统研究及应用%Research and Applications of Openly-architectured Subsea Production Control Systems Based on Optical Fiber

    Institute of Scientific and Technical Information of China (English)

    刘太元; 郭宏; 闫嘉钰

    2012-01-01

    借助光纤通信本身所特有的长传输距离、高带宽及低衰减等特性,采用一种开放式的架构来组建整个水下生产控制系统.分析了开放式架构与传统控制系统的区别,研究了开放式架构实施过程中的关键问题,同时以西非某深水项目为例,介绍了开放式架构水下控制系统在深水油气田工程开发中的应用和需要注意的问题.%Thanks to the characteristics of fiberoptic communication which boasting of long transmission distance , high wideband and low attenuation, and basing on an open architecture, a subsea production control system was set up and traditional control systems and open architecture base control systems were compared and the key issues for application were studied; taking a deepwater project in West Africa as an example to have application of this technology and relevant issues introduced.

  14. Numerical Propulsion System Simulation Architecture

    Science.gov (United States)

    Naiman, Cynthia G.

    2004-01-01

    The Numerical Propulsion System Simulation (NPSS) is a framework for performing analysis of complex systems. Because the NPSS was developed using the object-oriented paradigm, the resulting architecture is an extensible and flexible framework that is currently being used by a diverse set of participants in government, academia, and the aerospace industry. NPSS is being used by over 15 different institutions to support rockets, hypersonics, power and propulsion, fuel cells, ground based power, and aerospace. Full system-level simulations as well as subsystems may be modeled using NPSS. The NPSS architecture enables the coupling of analyses at various levels of detail, which is called numerical zooming. The middleware used to enable zooming and distributed simulations is the Common Object Request Broker Architecture (CORBA). The NPSS Developer's Kit offers tools for the developer to generate CORBA-based components and wrap codes. The Developer's Kit enables distributed multi-fidelity and multi-discipline simulations, preserves proprietary and legacy codes, and facilitates addition of customized codes. The platforms supported are PC, Linux, HP, Sun, and SGI.

  15. Ontology-driven health information systems architectures.

    Science.gov (United States)

    Blobel, Bernd; Oemig, Frank

    2009-01-01

    Following an architecture vision such as the Generic Component Model (GCM) architecture framework, health information systems for supporting personalized care have to be based on a component-oriented architecture. Representing concepts and their interrelations, the GCM perspectives system architecture, domains, and development process can be described by the domains' ontologies. The paper introduces ontology principles, ontology references to the GCM as well as some practical aspects of ontology-driven approaches to semantically interoperable and sustainable health information systems.

  16. Advanced design concepts for open distributed systems

    NARCIS (Netherlands)

    Pires, L.F.; Ferreira Pires, Luis; van Sinderen, Marten J.; Vissers, C.A.

    1993-01-01

    Experience with the engineering of large scale open distributed systems has shown that their design should be specified at several well defined levels of abstractions, where each level aims at satisfying specific user, architectural and implementation purposes. Therefore designers should dispose of

  17. Pluto Express power system architecture

    Energy Technology Data Exchange (ETDEWEB)

    Carr, G.A. [California Inst. of Tech., Pasadena, CA (United States). Jet Propulsion Lab.

    1996-12-31

    The Pluto Express power system must answer the challenge of the next generation spacecraft by reducing its power, mass and volume envelopes. Technology developed by the New Millennium Program will enable the power system to meet the stringent requirements for the Pluto Express mission without exceeding the spacecraft mass and volume budgets. Traditionally, there has been an increasing trend of the percentage of mass of the power system electronics with respect to the total spacecraft mass. With all of the previous technology focus on high density digital packaging, the power system electronics have not been keeping pace forcing the spacecraft to absorb a relative increase in the power system mass. The increasing trend can be reversed by using mixed signal ASICs and high density multi-chip-module (MCM) packaging techniques validated by the New Millennium Program. As the size of the spacecraft shrinks, the power system electronics must become tightly integrated with the spacecraft loads. The power system architecture needs the flexibility to accommodate the specific load requirements without sacrificing the capability for growth or reduction as the spacecraft requirements change throughout the development. Modularity is a key requirement that will reduce the overall power system cost. Although the focus has been on shrinking the power system volume and mass, the efficiency and functionality cannot be ignored. Increased efficiency and functionality will only enhance the power systems capability to reduce spacecraft power requirements. The combination of the New Millennium packaging technologies with the Pluto Express power system architecture will produce a product with the capability to meet a wide range of mission profiles while reducing system development costs.

  18. Opening and Closing in Open Systems.

    Science.gov (United States)

    Klapp, Orrin E.

    In open information systems, such as in the case of human interchange with the self and the environment, input quantities have no upper limits. The human information utilization system, however, is psychologically and behaviorally unable to accept ever increasing loads of information. Because of this apparent fact, human information systems should…

  19. A Systems Engineering Approach to Architecture Development

    Science.gov (United States)

    Di Pietro, David A.

    2015-01-01

    Architecture development is often conducted prior to system concept design when there is a need to determine the best-value mix of systems that works collectively in specific scenarios and time frames to accomplish a set of mission area objectives. While multiple architecture frameworks exist, they often require use of unique taxonomies and data structures. In contrast, this paper characterizes architecture development using terminology widely understood within the systems engineering community. Using a notional civil space architecture example, it employs a multi-tier framework to describe the enterprise level architecture and illustrates how results of lower tier, mission area architectures integrate into the enterprise architecture. It also presents practices for conducting effective mission area architecture studies, including establishing the trade space, developing functions and metrics, evaluating the ability of potential design solutions to meet the required functions, and expediting study execution through the use of iterative design cycles

  20. Delivering Savings with Open Architecture and Product Lines

    Science.gov (United States)

    2011-04-30

    Software-Reliant Systems Lawrence Jones and John Bergey , Software Engineering Institute Advances in the Acquisition of Secure Systems Based on Open...reduction in training costs (Clements & Bergey , 2005). Shorter Development Schedules Developing hardware or software from scratch takes more time...Chesbrough, H. (2006). Open business models. Cambridge, MA: Harvard University Press. Clements, P., & Bergey , J. (2005, September). The U.S. Army’s

  1. Exploring Enterprise, System of Systems, and System and Software Architectures

    Science.gov (United States)

    2016-06-13

    2009 Carnegie Mellon University Exploring Enterprise, System of Systems, and System and Software Architectures Software Engineering Institute...TITLE AND SUBTITLE Exploring Enterprise, System of Systems, and System and Software Architectures 5a. CONTRACT NUMBER 5b. GRANT NUMBER 5c...Carnegie Mellon University, Software Engineering Institute,Pittsburgh,PA,15213 8. PERFORMING ORGANIZATION REPORT NUMBER 9. SPONSORING/MONITORING AGENCY

  2. Information Systems for Enterprise Architecture

    Directory of Open Access Journals (Sweden)

    Oswaldo Moscoso Zea

    2014-03-01

    Full Text Available (Received: 2014/02/14 - Accepted: 2014/03/25Enterprise Architecture (EA has emerged as one of the most important topics to consider in Information System studies and has grown to become an essential business management activity to visualize and evaluate the future direction of a company. Nowadays in the market there are several software tools that support Enterprise Architects to work with EA. In order to decrease the risk of purchasing software tools that do not fulfill stakeholder´s needs is important to assess the software before making an investment. In this paper a literature review of the state of the art of EA will be done. Furthermore evaluation initiatives and existing information systems are analyzed which can support decision makers in the appropriate software tools for their companies.

  3. Dynamic architecture of a minimal RNA polymerase II open promoter complex

    OpenAIRE

    Treutlein, B.; Muschielok, A.; Andrecka, J.; Jawhari, A.; Buchen, C.; Kostrewa, D.; Hög, F.; Cramer, P.; Michaelis, J.

    2012-01-01

    The open promoter complex (OC) is a central intermediate during transcription initiation that contains a DNA bubble. Here, we employ singlemolecule Fo¨ rster resonance energy transfer experiments and Nano-Positioning System analysis to determine the three-dimensional architecture of a minimal OC consisting of promoter DNA, including a TATA box and an 11-nucleotide mismatched region around the transcription start site, TATA box-binding protein (TBP), RNA polymerase (Pol) II, and general transc...

  4. Updates to the NASA Space Telecommunications Radio System (STRS) Architecture

    Science.gov (United States)

    Kacpura, Thomas J.; Handler, Louis M.; Briones, Janette; Hall, Charles S.

    2008-01-01

    This paper describes an update of the Space Telecommunications Radio System (STRS) open architecture for NASA space based radios. The STRS architecture has been defined as a framework for the design, development, operation and upgrade of space based software defined radios, where processing resources are constrained. The architecture has been updated based upon reviews by NASA missions, radio providers, and component vendors. The STRS Standard prescribes the architectural relationship between the software elements used in software execution and defines the Application Programmer Interface (API) between the operating environment and the waveform application. Modeling tools have been adopted to present the architecture. The paper will present a description of the updated API, configuration files, and constraints. Minimum compliance is discussed for early implementations. The paper then closes with a summary of the changes made and discussion of the relevant alignment with the Object Management Group (OMG) SWRadio specification, and enhancements to the specialized signal processing abstraction.

  5. Key characteristics for software for open architecture controllers

    Science.gov (United States)

    Pfeffer, Lawrence E.; Tran, Hy D.

    1997-01-01

    Software development time, cost, and ease of (re)use are now among the major issues in development of advanced machines, whether for machine tools, automation systems, or process systems. Two keys to reducing development time are powerful, user-friendly development tools and software architectures that provide clean, well-documented interfaces to the various real-time functions that such machines require. Examples of essential functions are signal conditioning, servo-control, trajectory generation, calibration/registration, coordination of a synchronous events, task sequencing, communication with external systems, and user interfaces. There are a number of existing standards that can help with software development, such as the IEEE POSIX standards for operating systems and real time services; software tools to compliment these standards are beginning to see use. This paper will detail some of the existing standards, some new tools, and development activities relevant to advanced, 'smart' machines.

  6. Battery-Less Electroencephalogram System Architecture Optimization

    Science.gov (United States)

    2016-12-01

    ARL-TR-7909•DEC 2016 US Army Research Laboratory Battery-Less ElectroencephalogramSystem Architecture Optimization by Peter Gadfort and Renooka...DEC 2016 US Army Research Laboratory Battery-Less ElectroencephalogramSystem Architecture Optimization by Peter GadfortSensors and Electron Devices... Architecture Optimization Peter Gadfort and Renooka Karmarkar ARL-TR-7909 Approved for public release; distribution is unlimited. 13 June 2016 – 26 September

  7. The open information systems journal

    National Research Council Canada - National Science Library

    2007-01-01

    The Open Information Systems Journal is an Open Access online journal which publishes research articles, reviews, and letters in all areas on the development, use, application and influence of information systems...

  8. Design and Analysis of Architectures for Structural Health Monitoring Systems

    Science.gov (United States)

    Mukkamala, Ravi; Sixto, S. L. (Technical Monitor)

    2002-01-01

    During the two-year project period, we have worked on several aspects of Health Usage and Monitoring Systems for structural health monitoring. In particular, we have made contributions in the following areas. 1. Reference HUMS architecture: We developed a high-level architecture for health monitoring and usage systems (HUMS). The proposed reference architecture is shown. It is compatible with the Generic Open Architecture (GOA) proposed as a standard for avionics systems. 2. HUMS kernel: One of the critical layers of HUMS reference architecture is the HUMS kernel. We developed a detailed design of a kernel to implement the high level architecture.3. Prototype implementation of HUMS kernel: We have implemented a preliminary version of the HUMS kernel on a Unix platform.We have implemented both a centralized system version and a distributed version. 4. SCRAMNet and HUMS: SCRAMNet (Shared Common Random Access Memory Network) is a system that is found to be suitable to implement HUMS. For this reason, we have conducted a simulation study to determine its stability in handling the input data rates in HUMS. 5. Architectural specification.

  9. OpenSimRoot: widening the scope and application of root architectural models.

    Science.gov (United States)

    Postma, Johannes A; Kuppe, Christian; Owen, Markus R; Mellor, Nathan; Griffiths, Marcus; Bennett, Malcolm J; Lynch, Jonathan P; Watt, Michelle

    2017-08-01

    OpenSimRoot is an open-source, functional-structural plant model and mathematical description of root growth and function. We describe OpenSimRoot and its functionality to broaden the benefits of root modeling to the plant science community. OpenSimRoot is an extended version of SimRoot, established to simulate root system architecture, nutrient acquisition and plant growth. OpenSimRoot has a plugin, modular infrastructure, coupling single plant and crop stands to soil nutrient and water transport models. It estimates the value of root traits for water and nutrient acquisition in environments and plant species. The flexible OpenSimRoot design allows upscaling from root anatomy to plant community to estimate the following: resource costs of developmental and anatomical traits; trait synergisms; and (interspecies) root competition. OpenSimRoot can model three-dimensional images from magnetic resonance imaging (MRI) and X-ray computed tomography (CT) of roots in soil. New modules include: soil water-dependent water uptake and xylem flow; tiller formation; evapotranspiration; simultaneous simulation of mobile solutes; mesh refinement; and root growth plasticity. OpenSimRoot integrates plant phenotypic data with environmental metadata to support experimental designs and to gain a mechanistic understanding at system scales. © 2017 The Authors. New Phytologist © 2017 New Phytologist Trust.

  10. Systems and the Changing Architectural Practice.

    Science.gov (United States)

    Heimsath, Clovis B.

    The architecture profession needs to employ systems building design in order to raise the rate of productivity and performance in construction. Changes have been made in architecture educational programs that recognize the shift in the role of the architect from design genius to building production manager. Systems design has led to changes within…

  11. Software Architecture Patterns for System Administration Support

    NARCIS (Netherlands)

    Bijvank, Ronald; Wiersema, Wiebe; Köppe, Christian

    2013-01-01

    Many quality aspects of software systems are addressed in the existing literature on software architecture patterns. But the aspect of system administration seems to be a bit overlooked, even though it is an important aspect too. In this work we present three software architecture patterns that, whe

  12. The Method Framework for Engineering System Architectures (MFESA)

    Science.gov (United States)

    2016-06-13

    provides the world’s largest free open - source website documenting over 1,100 reusable method components. 3 SEI Webinar Series - MFESA Donald Firesmith...hope!): • Informational website with softcopies of the method components • Free , open - source tool set (Eclipse ?) 18 SEI Webinar Series - MFESA Donald...2009 Carnegie Mellon University The Method Framework for Engineering System Architectures (MFESA) Software Engineering Institute Carnegie Mellon

  13. Architecture design of a virtualized embedded system

    Directory of Open Access Journals (Sweden)

    A.Sbaa

    2013-01-01

    Full Text Available Nowadays, embedded systems have become a major driver of technological developments particularly in the industrial sector. In an embedded system, the hardware and software components are so intertwined that evolution is often a big issue. Thanks to the contributions of virtualization it is possible to design more flexible and scalable embedded systems. In fact, virtualization adds an abstraction layer between the hardware and the software to make it less intimately dependent. In this paper we propose system architecture based on embedded virtualization that will be modeled by the multi-agent systems. In the first part, we will discuss the state of the art with respect to embedded systems, multi-agent systems and the concept of virtualization. In the second part, we explain theissues related to traditional embedded systems and the constraints associated with their architecture. Subsequently, we propose a virtualization based architecture for embedded systems. In the last part we will showcase this architecture through a prototype.

  14. An open source/real-time atomic force microscope architecture to perform customizable force spectroscopy experiments.

    Science.gov (United States)

    Materassi, Donatello; Baschieri, Paolo; Tiribilli, Bruno; Zuccheri, Giampaolo; Samorì, Bruno

    2009-08-01

    We describe the realization of an atomic force microscope architecture designed to perform customizable experiments in a flexible and automatic way. Novel technological contributions are given by the software implementation platform (RTAI-LINUX), which is free and open source, and from a functional point of view, by the implementation of hard real-time control algorithms. Some other technical solutions such as a new way to estimate the optical lever constant are described as well. The adoption of this architecture provides many degrees of freedom in the device behavior and, furthermore, allows one to obtain a flexible experimental instrument at a relatively low cost. In particular, we show how such a system has been employed to obtain measures in sophisticated single-molecule force spectroscopy experiments [Fernandez and Li, Science 303, 1674 (2004)]. Experimental results on proteins already studied using the same methodologies are provided in order to show the reliability of the measure system.

  15. Architecture and Implementation of OpenPET Firmware and Embedded Software.

    Science.gov (United States)

    Abu-Nimeh, Faisal T; Ito, Jennifer; Moses, William W; Peng, Qiyu; Choong, Woon-Seng

    2016-04-01

    OpenPET is an open source, modular, extendible, and high-performance platform suitable for multi-channel data acquisition and analysis. Due to the flexibility of the hardware, firmware, and software architectures, the platform is capable of interfacing with a wide variety of detector modules not only in medical imaging but also in homeland security applications. Analog signals from radiation detectors share similar characteristics - a pulse whose area is proportional to the deposited energy and whose leading edge is used to extract a timing signal. As a result, a generic design method of the platform is adopted for the hardware, firmware, and software architectures and implementations. The analog front-end is hosted on a module called a Detector Board, where each board can filter, combine, timestamp, and process multiple channels independently. The processed data is formatted and sent through a backplane bus to a module called Support Board, where 1 Support Board can host up to eight Detector Board modules. The data in the Support Board, coming from 8 Detector Board modules, can be aggregated or correlated (if needed) depending on the algorithm implemented or runtime mode selected. It is then sent out to a computer workstation for further processing. The number of channels (detector modules), to be processed, mandates the overall OpenPET System Configuration, which is designed to handle up to 1,024 channels using 16-channel Detector Boards in the Standard System Configuration and 16,384 channels using 32-channel Detector Boards in the Large System Configuration.

  16. Marshall Application Realignment System (MARS) Architecture

    Science.gov (United States)

    Belshe, Andrea; Sutton, Mandy

    2010-01-01

    The Marshall Application Realignment System (MARS) Architecture project was established to meet the certification requirements of the Department of Defense Architecture Framework (DoDAF) V2.0 Federal Enterprise Architecture Certification (FEAC) Institute program and to provide added value to the Marshall Space Flight Center (MSFC) Application Portfolio Management process. The MARS Architecture aims to: (1) address the NASA MSFC Chief Information Officer (CIO) strategic initiative to improve Application Portfolio Management (APM) by optimizing investments and improving portfolio performance, and (2) develop a decision-aiding capability by which applications registered within the MSFC application portfolio can be analyzed and considered for retirement or decommission. The MARS Architecture describes a to-be target capability that supports application portfolio analysis against scoring measures (based on value) and overall portfolio performance objectives (based on enterprise needs and policies). This scoring and decision-aiding capability supports the process by which MSFC application investments are realigned or retired from the application portfolio. The MARS Architecture is a multi-phase effort to: (1) conduct strategic architecture planning and knowledge development based on the DoDAF V2.0 six-step methodology, (2) describe one architecture through multiple viewpoints, (3) conduct portfolio analyses based on a defined operational concept, and (4) enable a new capability to support the MSFC enterprise IT management mission, vision, and goals. This report documents Phase 1 (Strategy and Design), which includes discovery, planning, and development of initial architecture viewpoints. Phase 2 will move forward the process of building the architecture, widening the scope to include application realignment (in addition to application retirement), and validating the underlying architecture logic before moving into Phase 3. The MARS Architecture key stakeholders are most

  17. Disruptive Logic Architectures and Technologies From Device to System Level

    CERN Document Server

    Gaillardon, Pierre-Emmanuel; Clermidy, Fabien

    2012-01-01

    This book discusses the opportunities offered by disruptive technologies to overcome the economical and physical limits currently faced by the electronics industry. It provides a new methodology for the fast evaluation of an emerging technology from an architectural perspective and discusses the implications from simple circuits to complex architectures. Several technologies are discussed, ranging from 3-D integration of devices (Phase Change Memories, Monolithic 3-D, Vertical NanoWires-based transistors) to dense 2-D arrangements (Double-Gate Carbon Nanotubes, Sublithographic Nanowires, Lithographic Crossbar arrangements). Novel architectural organizations, as well as the associated tools, are presented in order to explore this freshly opened design space. Describes a novel architectural organization for future reconfigurable systems; Includes a complete benchmarking toolflow for emerging technologies; Generalizes the description of reconfigurable circuits in terms of hierarchical levels; Assesses disruptive...

  18. Modeling and Analysis of Real-time Properties of Open Architecture Computerized Numerical Control Systems%开放式体系结构数控系统实时性的建模与分析

    Institute of Scientific and Technical Information of China (English)

    曹宇男; 张辉; 叶佩青; 王田苗

    2011-01-01

    给出一个新的用于描述开放式体系结构数控系统(Open architecture computerized numerical control system,OAC)的建模方法--时间转化模型/全时轴实时时态逻辑(Timed transition model/all-time real-time temporal logic,TTM/ATRTTL).TTM/ATRTTL提供一整套方法用于对OAC系统的硬实时性和反馈特性进行建模并使用该形式化方法在系统层对OAC系统进行建模.分别给出开环OAC,系统级逻辑控制器以及任务间通信和同步机制的TTM模型,并最终给出具有调度机制的闭环OAC系统TTM模型.该模型为系统验证体系结构的基础.最后,给出系统验证体系结构并用模型验证工具STeP和CAD工具SF2STeP实现之.在系统验证过程中,首先解决STeP中遇到的若干模型验证问题,这些问题包括重写规则,验证规则,状态爆炸问题,以及时间约束限制问题.通过模型验证试验解决OAC系统运行过程中出现的死锁以及系统各模块执行时间约束检验问题.试验结果表明该方法可以有效地对OAC系统进行建模并对系统的实时特性进行验证.%A novel modeling method called timed transition model/all-time real-time temporal logic (TTM/ATRTTL) for specifying open architecture CNC (OAC) systems is proposed. TTM/ATRTTL provides full support for specifying hard real-time property and feed-back characteristics needed for modeling OAC systems. The formal method is used to model OAC systems from different aspects by specifying the TTM structure of an open-loop OAC, a system-level logic controller, and task communication and synchronization, and obtain the closed-loop OAC TTM with scheduling mechanism is given, which is the foundation of the verification framework. Finally, a verification framework is proposed and implemented with STeP and SF2STeP. In the verification,several problems are solved including rewrite rule, verification rule, state explosion problem, and time bound restriction when STeP is used for verification

  19. Communication architectures for systems-on-chip

    CERN Document Server

    Ayala, Jose L

    2011-01-01

    A presentation of state-of-the-art approaches from an industrial applications perspective, Communication Architectures for Systems-on-Chip shows professionals, researchers, and students how to attack the problem of data communication in the manufacture of SoC architectures. With its lucid illustration of current trends and research improving the performance, quality, and reliability of transactions, this is an essential reference for anyone dealing with communication mechanisms for embedded systems, systems-on-chip, and multiprocessor architectures--or trying to overcome existing limitations.

  20. Integrated Optical Interconnect Architectures for Embedded Systems

    CERN Document Server

    Nicolescu, Gabriela

    2013-01-01

    This book provides a broad overview of current research in optical interconnect technologies and architectures. Introductory chapters on high-performance computing and the associated issues in conventional interconnect architectures, and on the fundamental building blocks for integrated optical interconnect, provide the foundations for the bulk of the book which brings together leading experts in the field of optical interconnect architectures for data communication. Particular emphasis is given to the ways in which the photonic components are assembled into architectures to address the needs of data-intensive on-chip communication, and to the performance evaluation of such architectures for specific applications.   Provides state-of-the-art research on the use of optical interconnects in Embedded Systems; Begins with coverage of the basics for high-performance computing and optical interconnect; Includes a variety of on-chip optical communication topologies; Features coverage of system integration and opti...

  1. INNOVATIONS FOR STRUCTURAL SYSTEM EDUCATION IN ARCHITECTURE

    Directory of Open Access Journals (Sweden)

    Saniye Karaman Öztaş

    2015-09-01

    Full Text Available Structural systems, which play an important role in today’s architectural education, have become an issue that is analyzed by mega structures using different disciplines in the process from the design stage to the construction stage. While design and structural system studies are performed together in practice, architecture students usually have difficulty in reflecting their learning from the structural system course into their design studio in architectural education. In this study, information about education method for "Structural System and Technologies I" course, carried out in the fourth semester (second class in Department of Architecture in Gebze Technical University, was primarily given. Unlike previous teaching methods in this course scope, a structural system modeling to solve the given design problem was requested from the students during spring semester 2015. It was aimed to provide the students with an understanding of general design principles involving structural elements and learning about the necessity in which the structural system should be considered in conjunction with the architectural design, concluding with a two-week assignment. A survey was conducted among 55 architecture students in order to evaluate the outcomes of the assignment. According to the survey results, 61% of the students stated that function, form, and structural system affect on another. 20% of them stated that function, form, and structural system, respectively, have an order of importance in the design process. 9% of them stated that structural system determine form and function. 6 % of them stated that form, function, and structural system, respectively, have an order of importance in the design process. Finally, 4 % of them stated that their relations change depending on the condition. Innovative teaching method in this study is found to be successful because the students have experienced the importance of materials in structural system and

  2. Virtualization of AEGIS: A Study of the Feasibility of Applying Open Architecture Technology to the Surface Navy’s Most Complex Automated Weapon System

    Science.gov (United States)

    2011-09-01

    diagnostics system. Aerospace and Electronic Systems Magazine, IEEE , 9(2), 40–45. Current version released August 2002 in IEEE Xplore . doi: 10.1109...Cramming more components onto integrated circuits. Electronics, 114–117. Reprinted January 1998 in Proceedings of the IEEE , 86(1), 82–85. doi: S 0018

  3. Openness and ‘closedness’ in Roman tomb architecture

    DEFF Research Database (Denmark)

    Petersen, Jane Hjarl

    2014-01-01

    This paper examines the early columbaria of the Laurentina necropolis in Ostia, in particular Tomb E1, in light of modern architectural theories concerning human responses to and use of architectural patterns, specifically the idea that patterns act as strong catalysts in generating a sense...

  4. An Information Architecture Framework for the USAF: Managing Information from an Enterprise Perspective

    Science.gov (United States)

    2010-03-01

    Architecture Framework (E2AF) • Computer Integrated Manufacturing Open Systems Architecture ( CIMOSA ) • The Open Group Architecture Framework (TOGAF...API Application Programming Interface CDM conceptual data model CIMOSA Computer Integrated Manufacturing Open Systems Architecture DoDAF

  5. NEW ARCHITECTURE OF IP QOS MANAGEMENT SYSTEM

    Institute of Scientific and Technical Information of China (English)

    Jiao Li; Cui Yidong; Lin Yu; Wang Wendong; Cheng Shiduan

    2006-01-01

    Based on the analysis of current Quality of Service (QoS) management on IP network, new generation of QoS architecture QoSAF is proposed. QoSAF is divided into three layers: resource control layer, network service layer and business layer. QoS management is accomplished by interactivity of layers. In this architecture, mechanism of feedback control enhances the functions of resource management and system monitoring. The principle of design and logical architecture of system is discussed in detail.

  6. OPEN SOURCE ARCHITECTURE PER LA CITTÀ METROPOLITANA DI REGGIO CALABRIA

    Directory of Open Access Journals (Sweden)

    Gabriele Di Quarto

    2014-12-01

    Full Text Available The paper presents the role of the new Open Source technologies to encourage participation in the processes of incorporation of metropolitan cities established by the Italian legal system by Law 56 of 7 April 2014. Highlighted how technological innovation can provide useful tools to fill the competitive gap resulting from the physical conformation of the territory and from the delays in infrastructure of the future metropolitan city of Reggio Calabria. And is finally presented the experimental project of neighborhood of Archi CEP in Reggio Calabria.

  7. VIRTUAL INSTRUMENT SYSTEM SOFTWARE ARCHITECTURE DESCRIPTION LANGUAGE

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    In software engineering, an architecture description language (ADL) is intended to aid designers in defining software architectures in terms of abstractions that they find useful, and in making a smooth transi- tion to code. Based on ADL, the concept and models of the Virtual instrunent system Software architecture Description Language (VSDL) is provided in this paper. The VSDL put forward provides a new method for vir- tual instrunent system's application design and development by describing the virtual instrument system soft- ware architecture effectively. In this paper, the model description、component description and line description are analyzed in detail, and the structure language based on the model is also provided. VSDL provides a smooth interface to graphic software platform, and has been applied to many virtual instrument systems' inte- gration and already yielded good results both in technology and economy.

  8. Architecture for Integrated System Health Management Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Managing the health of vehicle, crew, and habitat systems is a primary function of flight controllers today. We propose to develop an architecture for automating...

  9. Fault tolerant architecture for artificial olfactory system

    Science.gov (United States)

    Lotfivand, Nasser; Nizar Hamidon, Mohd; Abdolzadeh, Vida

    2015-05-01

    In this paper, to cover and mask the faults that occur in the sensing unit of an artificial olfactory system, a novel architecture is offered. The proposed architecture is able to tolerate failures in the sensors of the array and the faults that occur are masked. The proposed architecture for extracting the correct results from the output of the sensors can provide the quality of service for generated data from the sensor array. The results of various evaluations and analysis proved that the proposed architecture has acceptable performance in comparison with the classic form of the sensor array in gas identification. According to the results, achieving a high odor discrimination based on the suggested architecture is possible.

  10. Algorithms, architectures and information systems security

    CERN Document Server

    Sur-Kolay, Susmita; Nandy, Subhas C; Bagchi, Aditya

    2008-01-01

    This volume contains articles written by leading researchers in the fields of algorithms, architectures, and information systems security. The first five chapters address several challenging geometric problems and related algorithms. These topics have major applications in pattern recognition, image analysis, digital geometry, surface reconstruction, computer vision and in robotics. The next five chapters focus on various optimization issues in VLSI design and test architectures, and in wireless networks. The last six chapters comprise scholarly articles on information systems security coverin

  11. Advanced connection systems for architectural glazing

    CERN Document Server

    Afghani Khoraskani, Roham

    2015-01-01

    This book presents the findings of a detailed study to explore the behavior of architectural glazing systems during and after an earthquake and to develop design proposals that will mitigate or even eliminate the damage inflicted on these systems. The seismic behavior of common types of architectural glazing systems are investigated and causes of damage to each system, identified. Furthermore, depending on the geometrical and structural characteristics, the ultimate horizontal load capacity of glass curtain wall systems is defined based on the stability of the glass components. Detailed attention is devoted to the incorporation of advanced connection devices between the structure of the building and the building envelope system in order to minimize the damage to glazed components. An innovative new connection device is introduced that results in a delicate and functional system easily incorporated into different architectural glazing systems, including those demanding maximum transparency.

  12. OPEN COURSEWARE OPPORTUNITIES FOR ARCHITECTURE EDUCATION: Anadolu University ANAPOD Experience

    Directory of Open Access Journals (Sweden)

    Alper CABUK

    2009-10-01

    Full Text Available Today, in every field of our lives, an efficient information access and mobility has become a prerequisite for the sustainability of all systems. Considering this fact, Internet technology is the fastest and the most proper media to access the required information worldwide, from our daily questions to scientific researches. Within this rapid development, many Internet compatible applications have been specialized to ease information access and sharing. Hence, internet inevitably becomes the top asset for obtaining the inputs, sharing the information and marketing goods and services. Increasing demand for web based education services is also one of the reflections of this rapid development. Internet based education models integrated with computer technologies provide the best and most efficient conclusions for mass education. To meet the mentioned demands and needs, Anadolu University, has been providing higher education opportunities through distance education since 1982. The University, with over 1.2 million distant students, is one of the leading universities in Turkey and the world. ANAPOD application is a new education model within University’s distance education process, which is highly applicable for many disciplines. In this paper, ANAPOD experiences for the architecture education will be discussed.

  13. SPATIAL DMBS ARCHITECTURE FOR A FREE AND OPEN SOURCE BIM

    Directory of Open Access Journals (Sweden)

    S. Logothetis

    2017-08-01

    Full Text Available Recent research on the field of Building Information Modelling (BIM technology, revealed that except of a few, accessible and free BIM viewers there is a lack of Free & Open Source Software (FOSS BIM software for the complete BIM process. With this in mind and considering BIM as the technological advancement of Computer-Aided Design (CAD systems, the current work proposes the use of a FOSS CAD software in order to extend its capabilities and transform it gradually into a FOSS BIM platform. Towards this undertaking, a first approach on developing a spatial Database Management System (DBMS able to store, organize and manage the overall amount of information within a single application, is presented.

  14. Spatial Dmbs Architecture for a Free and Open Source Bim

    Science.gov (United States)

    Logothetis, S.; Valari, E.; Karachaliou, E.; Stylianidis, E.

    2017-08-01

    Recent research on the field of Building Information Modelling (BIM) technology, revealed that except of a few, accessible and free BIM viewers there is a lack of Free & Open Source Software (FOSS) BIM software for the complete BIM process. With this in mind and considering BIM as the technological advancement of Computer-Aided Design (CAD) systems, the current work proposes the use of a FOSS CAD software in order to extend its capabilities and transform it gradually into a FOSS BIM platform. Towards this undertaking, a first approach on developing a spatial Database Management System (DBMS) able to store, organize and manage the overall amount of information within a single application, is presented.

  15. Stimulation of isolated ventricular myocytes within an open architecture microarray.

    Science.gov (United States)

    Klauke, Norbert; Smith, Godfrey L; Cooper, Jonathan M

    2005-03-01

    prolonged at the higher pacing rate. These studies show the prolonged electrical stimulation of isolated adult cardiac myocytes in microchambers with unimpaired EC coupling as verified on optical records of the action potential, Ca2+ transients and cell shortening. The open architecture provided free (pipetting) access for drug dispensation without cross talk between neighboring microwells, and multiplexed optical detection can be realized to study EC coupling on arrays of cells under both control and experimental conditions.

  16. OpenSM Monitoring System

    Energy Technology Data Exchange (ETDEWEB)

    2015-04-17

    The OpenSM Monitoring System includes a collection of diagnostic and monitoring tools for use on Infiniband networks. The information this system gathers is obtained from a service, which in turn is obtained directly from the OpenSM subnet manager.

  17. 基于开放式多智能体结构的分布式自主机器人系统%AN OPEN MULTI-AGENT ARCHITECTURE FOR DISTRIBUTED AUTONOMOUS ROBOT SYSTEMS

    Institute of Scientific and Technical Information of China (English)

    陈卫东; 董胜龙; 席裕庚

    2001-01-01

    针对多机器人系统的分布式自主控制,本文首先提出了一种开放式的多智能体结构,给出了设计原则和技术特点.然后面向真实世界的多机器人实时协作任务,采用多台自主移动机器人构造了一个多机器人系统,该系统集成了包括机器人视觉、传感器融合、无线通讯网络以及基于行为控制等多项技术.最后采用基于行为融合的加权方法,实现了多机器人的编队控制,实验结果表明了上述体系结构与方案的有效性.%Focusing on distributed autonomous control of multi-robot system, an open multi-agent architecture (OMAA) is presented. Based on the designing principle and techniques of the OMAA, a multiple mobile robot system is established to perform the cooperative tasks in real time and real world. Some agent technologies have been integrated in the system such as machine vision, sensor fusion, wireless network communication, behavior-based control, etc. Experiment results of multi-robot formation control demonstrate the validity of our scheme.

  18. Integrating IPsec within OpenFlow Architecture for Secure Group Communication

    Institute of Scientific and Technical Information of China (English)

    Vahid Heydari Fami Tafreshi; Ebrahim Ghazisaeedi; Haitham Cruickshank; Zhili Sun

    2014-01-01

    Network security protocols such as IPsec have been used for many years to ensure robust end-to-end communication and are impor-tant in the context of SDN. Despite the widespread installation of IPsec to date, per-packet protection offered by the protocol is not very compatible with OpenFlow and flow-like behavior. OpenFlow architecture cannot aggregate IPsec-ESP flows in transport mode or tunnel mode because layer-3 information is encrypted and therefore unreadable. In this paper, we propose using the Secu-rity Parameter Index (SPI) of IPsec within the OpenFlow architecture to identify and direct IPsec flows. This enables IPsec to con-form to the packet-based behavior of OpenFlow architecture. In addition, by distinguishing between IPsec flows, the architecture is particularly suited to secure group communication.

  19. An OpenCL implementation of an image de-mosaicking algorithm on a hybrid platform of heterogeneous system architecture%基于异构平台的自适应图像去马赛克的OpenCL加速

    Institute of Scientific and Technical Information of China (English)

    田旭文; 朱茂华

    2016-01-01

    基于异构计算概念,使用 GPU 和 OpenCL 加速了一个高复杂度的自适应图像去马赛克算法,并在 AMD Bald Eagle 和 FirePro W8100组成的异构计算平台上完成了功能和性能测试。实验结果表明,该异构平台能取得良好的图像重建效果, W8100处理图像的速率超过了100 f/s ,每帧图像有1920×1080个像素,证明异构计算平台及 OpenCL可满足医疗、网络监控等应用领域对高帧率、高清图像影像的需求。%This paper describes a GPU-accelerated implementation of adaptive image de-mosaicking ( a common digital image pro-cessing application ) to demonstrate massive computation power of the many-core architecture . Acceleration strategies are briefly de-scribed to properly map the real-world applications to the GPU for high performance computing . Experimental results show that the developed OpenCL implementation can leverage the AMD FirePro W8100 , which achieves a high throughput rate up to 100 frames/s , each having 1920-by-1080 pixels with RGB values . This research work integrates this GPU processor and the AMD Bald Eagle ( an embedded APU processor ) to form a heterogeneous computing platform , and uses this acceleration example as a case study to demonstrate that heterogeneous system architecture is well-suited for high-throughput , high-definition applications in many fields , such as security and medical imaging .

  20. Interface Evaluation for Open System Architectures

    Science.gov (United States)

    2014-03-01

    construction of the model. Dr. John Colombi, my thesis advisor, helped to cater a curriculum to my ambitions to incorporate decision analysis into my...20Lamartin%20MOSA%20Me mo%20(signed%207%20July%2004).pdf Matheson, J. E., & Abbas, A. E. (2005). Utility transversality : a value-based approach

  1. The architecture of enterprise hospital information system.

    Science.gov (United States)

    Lu, Xudong; Duan, Huilong; Li, Haomin; Zhao, Chenhui; An, Jiye

    2005-01-01

    Because of the complexity of the hospital environment, there exist a lot of medical information systems from different vendors with incompatible structures. In order to establish an enterprise hospital information system, the integration among these heterogeneous systems must be considered. Complete integration should cover three aspects: data integration, function integration and workflow integration. However most of the previous design of architecture did not accomplish such a complete integration. This article offers an architecture design of the enterprise hospital information system based on the concept of digital neural network system in hospital. It covers all three aspects of integration, and eventually achieves the target of one virtual data center with Enterprise Viewer for users of different roles. The initial implementation of the architecture in the 5-year Digital Hospital Project in Huzhou Central hospital of Zhejiang Province is also described.

  2. Architecture for Pseudo Acausal Evolvable Embedded Systems

    CERN Document Server

    Abubakr, Mohd

    2007-01-01

    Advances in semiconductor technology are contributing to the increasing complexity in the design of embedded systems. Architectures with novel techniques such as evolvable nature and autonomous behavior have engrossed lot of attention. This paper demonstrates conceptually evolvable embedded systems can be characterized basing on acausal nature. It is noted that in acausal systems, future input needs to be known, here we make a mechanism such that the system predicts the future inputs and exhibits pseudo acausal nature. An embedded system that uses theoretical framework of acausality is proposed. Our method aims at a novel architecture that features the hardware evolability and autonomous behavior alongside pseudo acausality. Various aspects of this architecture are discussed in detail along with the limitations.

  3. SDOE 650: System Architecture and Design

    Energy Technology Data Exchange (ETDEWEB)

    George, Colin B [Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)

    2014-07-01

    The proposed system is a test system that verifies the cables functionality in the expected environments defined in the ES. Verification methods include test, inspect, demonstrate, and analyze. Since we are defining the architecture for a test system we will focus on the customer expectations and requirements that will be satisfied or verified via testing

  4. Reference Avionics Architecture for Lunar Surface Systems

    Science.gov (United States)

    Somervill, Kevin M.; Lapin, Jonathan C.; Schmidt, Oron L.

    2010-01-01

    Developing and delivering infrastructure capable of supporting long-term manned operations to the lunar surface has been a primary objective of the Constellation Program in the Exploration Systems Mission Directorate. Several concepts have been developed related to development and deployment lunar exploration vehicles and assets that provide critical functionality such as transportation, habitation, and communication, to name a few. Together, these systems perform complex safety-critical functions, largely dependent on avionics for control and behavior of system functions. These functions are implemented using interchangeable, modular avionics designed for lunar transit and lunar surface deployment. Systems are optimized towards reuse and commonality of form and interface and can be configured via software or component integration for special purpose applications. There are two core concepts in the reference avionics architecture described in this report. The first concept uses distributed, smart systems to manage complexity, simplify integration, and facilitate commonality. The second core concept is to employ extensive commonality between elements and subsystems. These two concepts are used in the context of developing reference designs for many lunar surface exploration vehicles and elements. These concepts are repeated constantly as architectural patterns in a conceptual architectural framework. This report describes the use of these architectural patterns in a reference avionics architecture for Lunar surface systems elements.

  5. Web Mapping Architectures Based on Open Specifications and Free and Open Source Software in the Water Domain

    Science.gov (United States)

    Arias Muñoz, C.; Brovelli, M. A.; Kilsedar, C. E.; Moreno-Sanchez, R.; Oxoli, D.

    2017-09-01

    The availability of water-related data and information across different geographical and jurisdictional scales is of critical importance for the conservation and management of water resources in the 21st century. Today information assets are often found fragmented across multiple agencies that use incompatible data formats and procedures for data collection, storage, maintenance, analysis, and distribution. The growing adoption of Web mapping systems in the water domain is reducing the gap between data availability and its practical use and accessibility. Nevertheless, more attention must be given to the design and development of these systems to achieve high levels of interoperability and usability while fulfilling different end user informational needs. This paper first presents a brief overview of technologies used in the water domain, and then presents three examples of Web mapping architectures based on free and open source software (FOSS) and the use of open specifications (OS) that address different users' needs for data sharing, visualization, manipulation, scenario simulations, and map production. The purpose of the paper is to illustrate how the latest developments in OS for geospatial and water-related data collection, storage, and sharing, combined with the use of mature FOSS projects facilitate the creation of sophisticated interoperable Web-based information systems in the water domain.

  6. WEB MAPPING ARCHITECTURES BASED ON OPEN SPECIFICATIONS AND FREE AND OPEN SOURCE SOFTWARE IN THE WATER DOMAIN

    Directory of Open Access Journals (Sweden)

    C. Arias Muñoz

    2017-09-01

    Full Text Available The availability of water-related data and information across different geographical and jurisdictional scales is of critical importance for the conservation and management of water resources in the 21st century. Today information assets are often found fragmented across multiple agencies that use incompatible data formats and procedures for data collection, storage, maintenance, analysis, and distribution. The growing adoption of Web mapping systems in the water domain is reducing the gap between data availability and its practical use and accessibility. Nevertheless, more attention must be given to the design and development of these systems to achieve high levels of interoperability and usability while fulfilling different end user informational needs. This paper first presents a brief overview of technologies used in the water domain, and then presents three examples of Web mapping architectures based on free and open source software (FOSS and the use of open specifications (OS that address different users’ needs for data sharing, visualization, manipulation, scenario simulations, and map production. The purpose of the paper is to illustrate how the latest developments in OS for geospatial and water-related data collection, storage, and sharing, combined with the use of mature FOSS projects facilitate the creation of sophisticated interoperable Web-based information systems in the water domain.

  7. Electrical system architecture having high voltage bus

    Science.gov (United States)

    Hoff, Brian Douglas [East Peoria, IL; Akasam, Sivaprasad [Peoria, IL

    2011-03-22

    An electrical system architecture is disclosed. The architecture has a power source configured to generate a first power, and a first bus configured to receive the first power from the power source. The architecture also has a converter configured to receive the first power from the first bus and convert the first power to a second power, wherein a voltage of the second power is greater than a voltage of the first power, and a second bus configured to receive the second power from the converter. The architecture further has a power storage device configured to receive the second power from the second bus and deliver the second power to the second bus, a propulsion motor configured to receive the second power from the second bus, and an accessory motor configured to receive the second power from the second bus.

  8. Architecture, algorithm and application of OpenCV VS%OpenCV VS架构、算法及应用

    Institute of Scientific and Technical Information of China (English)

    梁华; 李兴福

    2012-01-01

    Intel OpenCV VS (video surveillance) is an efficient and universal open source platform for video object detection, tracking and trajectory analysis. However research and application are rare due to lack of material about it. The architecture and algorithm of VS platform are dissected based on analysis of OpenCV VS source code. The algorithm description and corresponding interface are presented. A high-efficiency pedestrian statistics system based on OpenCV VS architecture is provided in this paper.%Intel OpenCV VS是OpenCV内嵌的一个高效、通用的视频目标检测、跟踪和轨迹分析的开源平台,但由于没有相关资料而缺少研究和应用.在深入挖掘OpenCV VS源码的基础上,剖析了该平台的整体架构和算法体系,给出了算法描述和相应接口.在此基础上,开发了一个基于OpenCV VS架构的稳定、高效的行人统计系统.

  9. Web Based System Architecture for Long Pulse Remote Experimentation

    Energy Technology Data Exchange (ETDEWEB)

    De Las Heras, E.; Lastra, D. [INDRA Sistemas, S.A., Unidad de Sistemas de Control, Madrid (Spain); Vega, J.; Castro, R. [Association Euratom CIEMAT for Fusion, Madrid (Spain); Ruiz, M.; Barrera, E. [Universidad Politecnica de Madrid (Spain)

    2009-07-01

    INDRA is the first Information Technology company in Spain and it presents here, through a series of transparencies, its own approach for the remote experimentation architecture for long pulses (REAL). All the architecture is based on Java-2 platform standards and REAL is a totally open architecture. By itself REAL offers significant advantages: -) access authentication and authorization under multiple security implementations, -) local or remote network access: LAN, WAN, VPN..., -) on-line access to acquisition systems for monitoring and configuration, -) scalability, flexibility, robustness, platform independence,.... The BeansNet implementation of REAL gives additional good things such as: -) easy implementation, -) graphical tool for service composition and configuration, -) availability and hot-swap (no need of stopping or restarting services after update or remodeling, and -) INDRA support. The implementation of BeansNet at the TJ-2 stellarator at Ciemat is presented. This document is made of the presentation transparencies. (A.C.)

  10. A Sustainable, Reliable Mission-Systems Architecture that Supports a System of Systems Approach to Space Exploration

    Science.gov (United States)

    Watson, Steve; Orr, Jim; O'Neil, Graham

    2004-01-01

    A mission-systems architecture based on a highly modular "systems of systems" infrastructure utilizing open-standards hardware and software interfaces as the enabling technology is absolutely essential for an affordable and sustainable space exploration program. This architecture requires (a) robust communication between heterogeneous systems, (b) high reliability, (c) minimal mission-to-mission reconfiguration, (d) affordable development, system integration, and verification of systems, and (e) minimum sustaining engineering. This paper proposes such an architecture. Lessons learned from the space shuttle program are applied to help define and refine the model.

  11. System architecture of communication infrastructures for PPDR organisations

    Science.gov (United States)

    Müller, Wilmuth

    2017-04-01

    The growing number of events affecting public safety and security (PS and S) on a regional scale with potential to grow up to large scale cross border disasters puts an increased pressure on organizations responsible for PS and S. In order to respond timely and in an adequate manner to such events Public Protection and Disaster Relief (PPDR) organizations need to cooperate, align their procedures and activities, share the needed information and be interoperable. Existing PPDR/PMR technologies do not provide broadband capability, which is a major limitation in supporting new services hence new information flows and currently they have no successor. There is also no known standard that addresses interoperability of these technologies. The paper at hands provides an approach to tackle the above mentioned aspects by defining an Enterprise Architecture (EA) of PPDR organizations and a System Architecture of next generation PPDR communication networks for a variety of applications and services on broadband networks, including the ability of inter-system, inter-agency and cross-border operations. The Open Safety and Security Architecture Framework (OSSAF) provides a framework and approach to coordinate the perspectives of different types of stakeholders within a PS and S organization. It aims at bridging the silos in the chain of commands and on leveraging interoperability between PPDR organizations. The framework incorporates concepts of several mature enterprise architecture frameworks including the NATO Architecture Framework (NAF). However, OSSAF is not providing details on how NAF should be used for describing the OSSAF perspectives and views. In this contribution a mapping of the NAF elements to the OSSAF views is provided. Based on this mapping, an EA of PPDR organizations with a focus on communication infrastructure related capabilities is presented. Following the capability modeling, a system architecture for secure and interoperable communication infrastructures

  12. A New System Architecture for Pervasive Computing

    CERN Document Server

    Ismail, Anis; Ismail, Ziad

    2011-01-01

    We present new system architecture, a distributed framework designed to support pervasive computing applications. We propose a new architecture consisting of a search engine and peripheral clients that addresses issues in scalability, data sharing, data transformation and inherent platform heterogeneity. Key features of our application are a type-aware data transport that is capable of extract data, and present data through handheld devices (PDA (personal digital assistant), mobiles, etc). Pervasive computing uses web technology, portable devices, wireless communications and nomadic or ubiquitous computing systems. The web and the simple standard HTTP protocol that it is based on, facilitate this kind of ubiquitous access. This can be implemented on a variety of devices - PDAs, laptops, information appliances such as digital cameras and printers. Mobile users get transparent access to resources outside their current environment. We discuss our system's architecture and its implementation. Through experimental...

  13. Formal Protection Architecture for Cloud Computing System

    Institute of Scientific and Technical Information of China (English)

    Yasha Chen; Jianpeng Zhao; Junmao Zhu; Fei Yan

    2014-01-01

    Cloud computing systems play a vital role in national securi-ty. This paper describes a conceptual framework called dual-system architecture for protecting computing environments. While attempting to be logical and rigorous, formalism meth-od is avoided and this paper chooses algebra Communication Sequential Process.

  14. Software system architecture for corporate user support

    Science.gov (United States)

    Sukhopluyeva, V. S.; Kuznetsov, D. Y.

    2017-01-01

    In this article, several existing ready-to-use solutions for the HelpDesk are reviewed. Advantages and disadvantages of these systems are identified. Architecture of software solution for a corporate user support system is presented in a form of the use case, state, and component diagrams described by using a unified modeling language (UML).

  15. Rapid phenotyping of alfalfa root system architecture

    Science.gov (United States)

    Root system architecture (RSA) influences the capacity of an alfalfa plant for symbiotic nitrogen fixation, nutrient uptake and water use efficiency, resistance to frost heaving, winterhardiness, and some pest and pathogen resistance. However, we currently lack a basic understanding of root system d...

  16. EASEE: an open architecture approach for modeling battlespace signal and sensor phenomenology

    Science.gov (United States)

    Waldrop, Lauren E.; Wilson, D. Keith; Ekegren, Michael T.; Borden, Christian T.

    2017-04-01

    Open architecture in the context of defense applications encourages collaboration across government agencies and academia. This paper describes a success story in the implementation of an open architecture framework that fosters transparency and modularity in the context of Environmental Awareness for Sensor and Emitter Employment (EASEE), a complex physics-based software package for modeling the effects of terrain and atmospheric conditions on signal propagation and sensor performance. Among the highlighted features in this paper are: (1) a code refactorization to separate sensitive parts of EASEE, thus allowing collaborators the opportunity to view and interact with non-sensitive parts of the EASEE framework with the end goal of supporting collaborative innovation, (2) a data exchange and validation effort to enable the dynamic addition of signatures within EASEE thus supporting a modular notion that components can be easily added or removed to the software without requiring recompilation by developers, and (3) a flexible and extensible XML interface, which aids in decoupling graphical user interfaces from EASEE's calculation engine, and thus encourages adaptability to many different defense applications. In addition to the outlined points above, this paper also addresses EASEE's ability to interface with both proprietary systems such as ArcGIS. A specific use case regarding the implementation of an ArcGIS toolbar that leverages EASEE's XML interface and enables users to set up an EASEE-compliant configuration for probability of detection or optimal sensor placement calculations in various modalities is discussed as well.

  17. Evaluation of software maintain ability with open EHR - a comparison of architectures.

    Science.gov (United States)

    Atalag, Koray; Yang, Hong Yul; Tempero, Ewan; Warren, James R

    2014-11-01

    To assess whether it is easier to maintain a clinical information system developed using open EHR model driven development versus mainstream methods. A new open source application (GastrOS) has been developed following open EHR's multi-level modelling approach using .Net/C# based on the same requirements of an existing clinically used application developed using Microsoft Visual Basic and Access database. Almost all the domain knowledge was embedded into the software code and data model in the latter. The same domain knowledge has been expressed as a set of open EHR Archetypes in GastrOS. We then introduced eight real-world change requests that had accumulated during live clinical usage, and implemented these in both systems while measuring time for various development tasks and change in software size for each change request. Overall it took half the time to implement changes in GastrOS. However it was the more difficult application to modify for one change request, suggesting the nature of change is also important. It was not possible to implement changes by modelling only. Comparison of relative measures of time and software size change within each application highlights how architectural differences affected maintain ability across change requests. The use of open EHR model driven development can result in better software maintain ability. The degree to which open EHR affects software maintain ability depends on the extent and nature of domain knowledge involved in changes. Although we used relative measures for time and software size, confounding factors could not be totally excluded as a controlled study design was not feasible. Copyright © 2014 Elsevier Ireland Ltd. All rights reserved.

  18. Judicious use of custom development in an open source component architecture

    Science.gov (United States)

    Bristol, S.; Latysh, N.; Long, D.; Tekell, S.; Allen, J.

    2014-12-01

    Modern software engineering is not as much programming from scratch as innovative assembly of existing components. Seamlessly integrating disparate components into scalable, performant architecture requires sound engineering craftsmanship and can often result in increased cost efficiency and accelerated capabilities if software teams focus their creativity on the edges of the problem space. ScienceBase is part of the U.S. Geological Survey scientific cyberinfrastructure, providing data and information management, distribution services, and analysis capabilities in a way that strives to follow this pattern. ScienceBase leverages open source NoSQL and relational databases, search indexing technology, spatial service engines, numerous libraries, and one proprietary but necessary software component in its architecture. The primary engineering focus is cohesive component interaction, including construction of a seamless Application Programming Interface (API) across all elements. The API allows researchers and software developers alike to leverage the infrastructure in unique, creative ways. Scaling the ScienceBase architecture and core API with increasing data volume (more databases) and complexity (integrated science problems) is a primary challenge addressed by judicious use of custom development in the component architecture. Other data management and informatics activities in the earth sciences have independently resolved to a similar design of reusing and building upon established technology and are working through similar issues for managing and developing information (e.g., U.S. Geoscience Information Network; NASA's Earth Observing System Clearing House; GSToRE at the University of New Mexico). Recent discussions facilitated through the Earth Science Information Partners are exploring potential avenues to exploit the implicit relationships between similar projects for explicit gains in our ability to more rapidly advance global scientific cyberinfrastructure.

  19. Architecture, systems research and computational sciences

    CERN Document Server

    2012-01-01

    The Winter 2012 (vol. 14 no. 1) issue of the Nexus Network Journal is dedicated to the theme “Architecture, Systems Research and Computational Sciences”. This is an outgrowth of the session by the same name which took place during the eighth international, interdisciplinary conference “Nexus 2010: Relationships between Architecture and Mathematics, held in Porto, Portugal, in June 2010. Today computer science is an integral part of even strictly historical investigations, such as those concerning the construction of vaults, where the computer is used to survey the existing building, analyse the data and draw the ideal solution. What the papers in this issue make especially evident is that information technology has had an impact at a much deeper level as well: architecture itself can now be considered as a manifestation of information and as a complex system. The issue is completed with other research papers, conference reports and book reviews.

  20. An architecture for mobile database management system

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    In order to design a new kind of mobile database management system (DBMS) more suitable for mobile computing than the existent DBMS, the essence of database systems in mobile computing is analyzed. An opinion is introduced that the mobile database is a kind of dynamic distributed database, and the concept of virtual servers to translate the clients' mobility to the servers' mobility is proposed. Based on these opinions, a kind of architecture of mobile DBMS, which is of versatility, is presented. The architecture is composed of a virtual server and a local DBMS, the virtual server is the kernel of the architecture and its functions are described. Eventually, the server kernel of a mobile DBMS prototype is illustrated.

  1. Low Power Detection Architecture for MIMO Systems

    Directory of Open Access Journals (Sweden)

    Shirly Edward.A

    2013-06-01

    Full Text Available This paper presents an architecture for K-best List Sphere Decoder (LSD algorithm for Multiple Input Multiple Output (MIMO Systems using Xilinx System Generator. We made use of an efficient bit-serial architecture, Distributed Arithmetic(DA to reduce the computational complexity involved in the algorithm. The real-valued expanded channel matrix and received vectors are analyzed, designed and implemented using Xilinx Spartan-6 FPGA running at 100MHz. We compare the resource utilization of the conventional implementation of the algorithm with the proposed architecture for different number of layers. The conversion of multipliers into shift and adder units leads to area optimization and reduced power consumption. The total estimated power for our design is found to be 187mW.

  2. A NEW SYSTEM ARCHITECTURE FOR PERVASIVE COMPUTING

    Directory of Open Access Journals (Sweden)

    Anis ISMAIL

    2011-08-01

    Full Text Available We present new system architecture, a distributed framework designed to support pervasive computingapplications. We propose a new architecture consisting of a search engine and peripheral clients thataddresses issues in scalability, data sharing, data transformation and inherent platform heterogeneity. Keyfeatures of our application are a type-aware data transport that is capable of extract data, and presentdata through handheld devices (PDA (personal digital assistant, mobiles, etc. Pervasive computing usesweb technology, portable devices, wireless communications and nomadic or ubiquitous computing systems.The web and the simple standard HTTP protocol that it is based on, facilitate this kind of ubiquitousaccess. This can be implemented on a variety of devices - PDAs, laptops, information appliances such asdigital cameras and printers. Mobile users get transparent access to resources outside their currentenvironment. We discuss our system’s architecture and its implementation. Through experimental study,we show reasonable performance and adaptation for our system’s implementation for the mobile devices.

  3. Open source systems security certification

    CERN Document Server

    Damiani, Ernesto; El Ioini, Nabil

    2009-01-01

    Open Source Advances in Computer Applications book series provides timely technological and business information for: Enabling Open Source Systems (OSS) to become an integral part of systems and devices produced by technology companies; Inserting OSS in the critical path of complex network development and embedded products, including methodologies and tools for domain-specific OSS testing (lab code available), plus certification of security, dependability and safety properties for complex systems; Ensuring integrated systems, including OSS, meet performance and security requirements as well as achieving the necessary certifications, according to the overall strategy of OSS usage on the part of the adopter

  4. The Research of System Architecture in Expert System

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    This paper illustrated the software architecture of our concretesafet y expert system. Three advanced technologies are proposed and have been applied to our expert system to greatly improve the intelligent level, which are human- compu ter interaction technology (conceptual model, dialogue management, interface ent ity and interface construct), intelligent agency user interface (IAUI) and compo nent technology. The i mportant character of the system architecture in our expert system is adapting a dvanced intelligent interface and scientific integration of various components d ifferent from common system architecture of expert system. Especially, in the in terface-friendly multimedia system intelligent interface is required.

  5. Regulated open multi-agent systems (ROMAS) a multi-agent approach for designing normative open systems

    CERN Document Server

    Garcia, Emilia; Botti, Vicente

    2015-01-01

    Addressing the open problem of engineering normative open systems using the multi-agent paradigm, normative open systems are explained as systems in which heterogeneous and autonomous entities and institutions coexist in a complex social and legal framework that can evolve to address the different and often conflicting objectives of the many stakeholders involved. Presenting  a software engineering approach which covers both the analysis and design of these kinds of systems, and which deals with the open issues in the area, ROMAS (Regulated Open Multi-Agent Systems) defines a specific multi-agent architecture, meta-model, methodology and CASE tool. This CASE tool is based on Model-Driven technology and integrates the graphical design with the formal verification of some properties of these systems by means of model checking techniques. Utilizing tables to enhance reader insights into the most important requirements for designing normative open multi-agent systems, the book also provides a detailed and easy t...

  6. PACS for Bhutan: a cost effective open source architecture for emerging countries

    Directory of Open Access Journals (Sweden)

    Osman Ratib

    2016-07-01

    Full Text Available Abstract This paper reports the design and implementation of an innovative and cost-effective imaging management infrastructure suitable for radiology centres in emerging countries. It was implemented in the main referring hospital of Bhutan equipped with a CT, an MRI, digital radiology, and a suite of several ultrasound units. They lacked the necessary informatics infrastructure for image archiving and interpretation and needed a system for distribution of images to clinical wards. The solution developed for this project combines several open source software platforms in a robust and versatile archiving and communication system connected to analysis workstations equipped with a FDA-certified version of the highly popular Open-Source software. The whole system was implemented on standard off-the-shelf hardware. The system was installed in three days, and training of the radiologists as well as the technical and IT staff was provided onsite to ensure full ownership of the system by the local team. Radiologists were rapidly capable of reading and interpreting studies on the diagnostic workstations, which had a significant benefit on their workflow and ability to perform diagnostic tasks more efficiently. Furthermore, images were also made available to several clinical units on standard desktop computers through a web-based viewer. Messages/teaching points • Open source imaging informatics platforms can provide cost-effective alternatives for PACS • Robust and cost-effective open architecture can provide adequate solutions for emerging countries • Imaging informatics is often lacking in hospitals equipped with digital modalities

  7. Modeling Open Software Architectures of Robot Controllers: A Brief Survey of Modeling Methods and Developing Methods

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    Openness is one of the features of modern robot controllers. Although many modeling technologies have been discussed to model and develop open robot controllers, the focus is always on modeling methodologies. Meanwhile, the relations between the former and the latter are usually ignored. According to the general software architecture of open robot controllers, this paper discusses modeling and developing methods. And the relationships between the typical ones are also analyzed.

  8. Intelligent document exchange architecture: Open to the Max

    Energy Technology Data Exchange (ETDEWEB)

    Turner, Ronald C.

    1997-05-08

    Intelligent Document Exchange Architecture (IDEA) addresses the issues inhibiting easy interchange of electronic documents within large organization and across networks: proprietary formats, competing industry standards, software tools that are difficult to integrate, and platforms of widely varying scale. IDEA defines an intelligent SGML Information Server that monitors and controls all of the services associated with creating, storing, retrieving, editing, transmitting, formatting, and delivering a multimedia document. All of the server's transactions with the user and with the various services rely on message-oriented middleware in which the messages themselves are valid SGML text. This allows for formalized and simplified interfacing to existing tools (document management and authoring software, for example) and thus promises a commercial off-the-shelf integration (COTSI) process. All of the locating mechanisms of IDEA are implemented with SGML formal public identifiers and a layered catalog. This assures that a delivered document is totally "live," residing always at its native location and in its current native form. SGML also includes a formal mechanism for defining dozens of ISO- and industry-standard formats. This architecture thus legitimately positions SGML as a manager of data of every variety.

  9. A Microprocessor Architecture for Bibliographic Retrieval System.

    Science.gov (United States)

    Martella, G.; Gobbi, G.

    1981-01-01

    Proposes a microprocessor-based architecture that makes large use of parallelism both in processing and in retrieval operations. The proposed system consists of three functional blocks: the query processor, simple query executers, and the answer composer. Twenty-one references are listed. (FM)

  10. A Reference Architecture for Workflow Management Systems

    NARCIS (Netherlands)

    Grefen, Paul; Remmerts de Vries, Remmert

    1998-01-01

    In the workflow management field, fast developments are taking place. A growing number of systems is currently under development, both in academic and commercial environments. Consequently, a wide variety of ad hoc architectures has come into existence. Reference models are necessary, however, to al

  11. Integrated computer control system architectural overview

    Energy Technology Data Exchange (ETDEWEB)

    Van Arsdall, P.

    1997-06-18

    This overview introduces the NIF Integrated Control System (ICCS) architecture. The design is abstract to allow the construction of many similar applications from a common framework. This summary lays the essential foundation for understanding the model-based engineering approach used to execute the design.

  12. Development of Architectures for Internet Telerobotics Systems

    CERN Document Server

    Bambang, Riyanto

    2008-01-01

    This paper presents our experience in developing and implementing Internet telerobotics system. Internet telerobotics system refers to a robot system controlled and monitored remotely through the Internet. A robot manipulator with five degrees of freedom, called Mentor, is employed. Client-server architecture is chosen as a platform for our Internet telerobotics system. Three generations of telerobotics systems have evolved in this research. The first generation was based on CGI and two tiered architecture, where a client presents a Graphical User Interface to the user, and utilizes the user's data entry and actions to perform requests to robot server running on a different machine. The second generation was developed using Java. We also employ Java 3D for creating and manipulating 3D geometry of manipulator links and for constructing the structures used in rendering that geometry, resulting in 3D robot movement simulation presented to the users(clients) through their web browser. Recent development in our In...

  13. Genetic architecture of open angle glaucoma and related determinants

    NARCIS (Netherlands)

    Ramdas, W.D.; Amin, N.; van Koolwijk, L.M.E.; Janssens, A.C.J.W.; Demirkan, A.; de Jong, P.T.V.M.; Aulchenko, Y.S.; Wolfs, R.C.W.; Hofman, A.; Rivadeneira, F.; Uitterlinden, A.G.; Oostra, B.A.; Lemij, H.G.; Klaver, C.C.W.; Vingerling, J.R.; Jansonius, N.M.; van Duijn, C.M.

    2011-01-01

    Background Although the vertical cup-disc ratio (VCDR) and intraocular pressure (IOP) are important determinants of open angle glaucoma (OAG), it is unclear to what extent the genetic origin of these traits overlap with those of OAG. We evaluated whether the same genes that determine VCDR and IOP al

  14. Platform Architecture for Decentralized Positioning Systems

    Directory of Open Access Journals (Sweden)

    Zakaria Kasmi

    2017-04-01

    Full Text Available A platform architecture for positioning systems is essential for the realization of a flexible localization system, which interacts with other systems and supports various positioning technologies and algorithms. The decentralized processing of a position enables pushing the application-level knowledge into a mobile station and avoids the communication with a central unit such as a server or a base station. In addition, the calculation of the position on low-cost and resource-constrained devices presents a challenge due to the limited computing, storage capacity, as well as power supply. Therefore, we propose a platform architecture that enables the design of a system with the reusability of the components, extensibility (e.g., with other positioning technologies and interoperability. Furthermore, the position is computed on a low-cost device such as a microcontroller, which simultaneously performs additional tasks such as data collecting or preprocessing based on an operating system. The platform architecture is designed, implemented and evaluated on the basis of two positioning systems: a field strength system and a time of arrival-based positioning system.

  15. Architectures Toward Reusable Science Data Systems

    Science.gov (United States)

    Moses, J. F.

    2014-12-01

    Science Data Systems (SDS) comprise an important class of data processing systems that support product generation from remote sensors and in-situ observations. These systems enable research into new science data products, replication of experiments and verification of results. NASA has been building ground systems for satellite data processing since the first Earth observing satellites launched and is continuing development of systems to support NASA science research, NOAA's weather satellites and USGS's Earth observing satellite operations. The basic data processing workflows and scenarios continue to be valid for remote sensor observations research as well as for the complex multi-instrument operational satellite data systems being built today. System functions such as ingest, product generation and distribution need to be configured and performed in a consistent and repeatable way with an emphasis on scalability. This paper will examine the key architectural elements of several NASA satellite data processing systems currently in operation and under development that make them suitable for scaling and reuse. Examples of architectural elements that have become attractive include virtual machine environments, standard data product formats, metadata content and file naming, workflow and job management frameworks, data acquisition, search, and distribution protocols. By highlighting key elements and implementation experience the goal is to recognize architectures that will outlast their original application and be readily adaptable for new applications. Concepts and principles are explored that lead to sound guidance for SDS developers and strategists.

  16. Platform Architecture for Decentralized Positioning Systems.

    Science.gov (United States)

    Kasmi, Zakaria; Norrdine, Abdelmoumen; Blankenbach, Jörg

    2017-04-26

    A platform architecture for positioning systems is essential for the realization of a flexible localization system, which interacts with other systems and supports various positioning technologies and algorithms. The decentralized processing of a position enables pushing the application-level knowledge into a mobile station and avoids the communication with a central unit such as a server or a base station. In addition, the calculation of the position on low-cost and resource-constrained devices presents a challenge due to the limited computing, storage capacity, as well as power supply. Therefore, we propose a platform architecture that enables the design of a system with the reusability of the components, extensibility (e.g., with other positioning technologies) and interoperability. Furthermore, the position is computed on a low-cost device such as a microcontroller, which simultaneously performs additional tasks such as data collecting or preprocessing based on an operating system. The platform architecture is designed, implemented and evaluated on the basis of two positioning systems: a field strength system and a time of arrival-based positioning system.

  17. e-Learning Management System Using Service Oriented Architecture

    Directory of Open Access Journals (Sweden)

    Mohammed A. Jabr

    2010-01-01

    Full Text Available Problem statement: Service Oriented Architecture (SOA defines how to integrate widely disparate applications for a world that is Web based and uses multiple implementation platforms. Using (SOA one can build durable e-learning contents, regardless of changes or evolutions in technology. This means that new content should be added to existing content without costly redesign, reconfiguration, or recoding. Approach: In this study an e-Learning management system with Web services oriented framework was proposed. The system will be an open source application with client-scripting facility. It also supports the cross browser and it is fully integrated with different databases; MS SQL Server, MS Access, Oracle and LDAP. Results: The key values of Interoperability, durability, compatibility, manageability, dynamic reusability and accessibility in the proposed architecture enhance the future e-Learning systems to communicate more efficiently and share data more easily. Conclusion/Recommendations: Web services architecture will provide a standard based platform for Service-Oriented Computing. It defines itself as a set of specifications that support an open XML-based platform for description, discovery, and interoperability of distributed, heterogeneous applications as services.

  18. Open Quantum Systems An Introduction

    CERN Document Server

    Rivas, ´Angel

    2012-01-01

    In this volume the fundamental theory of open quantum systems is revised in the light of modern developments in the field. A unified approach to the quantum evolution of open systems is presented by merging concepts and methods traditionally employed by different communities, such as quantum optics, condensed matter, chemical physics and mathematical physics. The mathematical structure and the general properties of the dynamical maps underlying open system dynamics are explained in detail. The microscopic derivation of dynamical equations, including both Markovian and non-Markovian evolutions, is also discussed. Because of the step-by-step explanations, this work is a useful reference to novices in this field. However, experienced researches can also benefit from the presentation of recent results.

  19. Robotic collaborative technology alliance: an open architecture approach to integrated research

    Science.gov (United States)

    Dean, Robert Michael S.; DiBerardino, Charles A.

    2014-06-01

    The Robotics Collaborative Technology Alliance (RCTA) seeks to provide adaptive robot capabilities which move beyond traditional metric algorithms to include cognitive capabilities [1]. Research occurs in 5 main Task Areas: Intelligence, Perception, Dexterous Manipulation and Unique Mobility (DMUM), Human Robot Interaction (HRI), and Integrated Research (IR). This last task of Integrated Research is especially critical and challenging. Individual research components can only be fully assessed when integrated onto a robot where they interact with other aspects of the system to create cross-Task capabilities which move beyond the State of the Art. Adding to the complexity, the RCTA is comprised of 12+ independent organizations across the United States. Each has its own constraints due to development environments, ITAR, "lab" vs "real-time" implementations, and legacy software investments from previous and ongoing programs. We have developed three main components to manage the Integration Task. The first is RFrame, a data-centric transport agnostic middleware which unifies the disparate environments, protocols, and data collection mechanisms. Second is the modular Intelligence Architecture built around the Common World Model (CWM). The CWM instantiates a Common Data Model and provides access services. Third is RIVET, an ITAR free Hardware-In-The-Loop simulator based on 3D game technology. RIVET provides each researcher a common test-bed for development prior to integration, and a regression test mechanism. Once components are integrated and verified, they are released back to the consortium to provide the RIVET baseline for further research. This approach allows Integration of new and legacy systems built upon different architectures, by application of Open Architecture principles.

  20. Telemedicine system interoperability architecture: concept description and architecture overview.

    Energy Technology Data Exchange (ETDEWEB)

    Craft, Richard Layne, II

    2004-05-01

    In order for telemedicine to realize the vision of anywhere, anytime access to care, it must address the question of how to create a fully interoperable infrastructure. This paper describes the reasons for pursuing interoperability, outlines operational requirements that any interoperability approach needs to consider, proposes an abstract architecture for meeting these needs, identifies candidate technologies that might be used for rendering this architecture, and suggests a path forward that the telemedicine community might follow.

  1. Architectural Design for European SST System

    Science.gov (United States)

    Utzmann, Jens; Wagner, Axel; Blanchet, Guillaume; Assemat, Francois; Vial, Sophie; Dehecq, Bernard; Fernandez Sanchez, Jaime; Garcia Espinosa, Jose Ramon; Agueda Mate, Alberto; Bartsch, Guido; Schildknecht, Thomas; Lindman, Niklas; Fletcher, Emmet; Martin, Luis; Moulin, Serge

    2013-08-01

    The paper presents the results of a detailed design, evaluation and trade-off of a potential European Space Surveillance and Tracking (SST) system architecture. The results have been produced in study phase 1 of the on-going "CO-II SSA Architectural Design" project performed by the Astrium consortium as part of ESA's Space Situational Awareness Programme and are the baseline for further detailing and consolidation in study phase 2. The sensor network is comprised of both ground- and space-based assets and aims at being fully compliant with the ESA SST System Requirements. The proposed ground sensors include a surveillance radar, an optical surveillance system and a tracking network (radar and optical). A space-based telescope system provides significant performance and robustness for the surveillance and tracking of beyond-LEO target objects.

  2. The NOAA Satellite Observing System Architecture Study

    Science.gov (United States)

    Volz, Stephen; Maier, Mark; Di Pietro, David

    2016-01-01

    NOAA is beginning a study, the NOAA Satellite Observing System Architecture (NSOSA) study, to plan for the future operational environmental satellite system that will follow GOES and JPSS, beginning about 2030. This is an opportunity to design a modern architecture with no pre-conceived notions regarding instruments, platforms, orbits, etc. The NSOSA study will develop and evaluate architecture alternatives to include partner and commercial alternatives that are likely to become available. The objectives will include both functional needs and strategic characteristics (e.g., flexibility, responsiveness, sustainability). Part of this study is the Space Platform Requirements Working Group (SPRWG), which is being commissioned by NESDIS. The SPRWG is charged to assess new or existing user needs and to provide relative priorities for observational needs in the context of the future architecture. SPRWG results will serve as input to the process for new foundational (Level 0 and Level 1) requirements for the next generation of NOAA satellites that follow the GOES-R, JPSS, DSCOVR, Jason-3, and COSMIC-2 missions.

  3. The Modeling Strategies for Open Software Architecture of Robot Controller

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    Although the modeling technologies for open robot controllers have been discussed widely, not much literature is devoted to the actual general modeling principles and strategies. The reason is that many researches focus on specific application fields. This paper accommodates for this lacuna and provides some general modeling principles and strategies. At last, the actual new modeling method -Hierarchical Object-Oriented Petri net (HOONet) which has been proved to be an effective modeling methodology, is used to illustrate the modeling strategies.

  4. System of Systems (SoS) Architecture Centric Acquisition

    Science.gov (United States)

    2016-06-07

    operation of the Software Engineering Institute, a federally funded research and development center. The Government of the United States has a royalty- free ...WORK UNIT NUMBER 7. PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) Carnegie Mellon University , Software Engineering Institute,Pittsburgh,PA...Architecture Evaluation, System and Software Architecture Evaluation, Acquisition Planning Workshop, etc. – Capture comments and suggestions

  5. Lesson Ⅰ Open Architecture-Developing Tendency of CNC System%第一讲开放式体系结构-数控系统发展的潮流

    Institute of Scientific and Technical Information of China (English)

    王正兵; 任偲

    2002-01-01

    Workstation/Machine Controller)和开放式系统体系结构标准SOSAS(Standards of Open System Architecture for Automatic Systems),首次提出了开放式体系结构的概念.1992年,欧共体开始实施自动化系统控制装置的开放系统体系结构计划OSACA(Open System Architecture for Control Within Automation Systems).经过十多年的发展,开放性一词已经深入人心,并且体现在相关产品中.开放式数控系统成为CNC发展的潮流.

  6. A new architecture for enterprise information systems.

    Science.gov (United States)

    Covvey, H D; Stumpf, J J

    1999-01-01

    Irresistible economic and technical forces are forcing healthcare institutions to develop regionalized services such as consolidated or virtual laboratories. Technical realities, such as the lack of an enabling enterprise-level information technology (IT) integration infrastructure, the existence of legacy systems, and non-existent or embryonic enterprise-level IT services organizations, are delaying or frustrating the achievement of the desired configuration of shared services. On attempting to address this matter, we discover that the state-of-the-art in integration technology is not wholly adequate, and itself becomes a barrier to the full realization of shared healthcare services. In this paper we report new work from the field of Co-operative Information Systems that proposes a new architecture of systems that are intrinsically cooperation-enabled, and we extend this architecture to both the regional and national scales.

  7. Data center network architecture in cloud computing:review, taxonomy, and open research issues

    Institute of Scientific and Technical Information of China (English)

    Han QI; Muhammad SHIRAZ; Jie-yao LIU; Abdullah GANI; Zulkanain ABDUL RAHMAN; Torki AALTAMEEM

    2014-01-01

    The data center network (DCN), which is an important component of data centers, consists of a large number of hosted servers and switches connected with high speed communication links. A DCN enables the deployment of resources centralization and on-demand access of the information and services of data centers to users. In recent years, the scale of the DCN has constantly increased with the widespread use of cloud-based services and the unprecedented amount of data delivery in/between data centers, whereas the traditional DCN architecture lacks aggregate bandwidth, scalability, and cost effectiveness for coping with the increasing demands of tenants in accessing the services of cloud data centers. Therefore, the design of a novel DCN architecture with the features of scalability, low cost, robustness, and energy conservation is required. This paper reviews the recent research fi ndings and technologies of DCN architectures to identify the issues in the existing DCN architectures for cloud computing. We develop a taxonomy for the classifi cation of the current DCN architectures, and also qualitatively analyze the traditional and contemporary DCN architectures. Moreover, the DCN architectures are compared on the basis of the signifi cant characteristics, such as bandwidth, fault tolerance, scalability, overhead, and deployment cost. Finally, we put forward open research issues in the deployment of scalable, low-cost, robust, and energy-efficient DCN architecture, for data centers in computational clouds.

  8. A Coherent and Non—Invasive Open Analysis Architecture and Framework with Applications in CMS

    Institute of Scientific and Technical Information of China (English)

    GeorgeAlverson; IannaOsborne; 等

    2001-01-01

    The CMS IGUANA project has implemented an open analysis architecture that enables the creation of an integrated analysis environment.In this "analysis desktop" environment a physicist is able to perform most analysis-related tasks,not just the presentation and visualisation steps usually associated with analysis tools.The motivation behind IGUANA's approach is that phsics analysis includes much more than just the visualisation and data presentation.Many factors contribute to the increasing importance of making analysis and visualisation software an integral part of the experiment's software:object oriented and ever more advanced data models,GRID,and automated hierarchical storage management systems to name just a few.At the same time the analysis toolkits should be modular and non-invasive to be usable in different contexts within one experiment and generally across experiments.Ideally the analysis environment would appear to be perfectly customised to the experiment and the context,but would mostly consist of generic components.We describe how the IGUANA project is addressing these issues and present both the architecture and examples of how different aspects of analysis appear to the users and the developers.

  9. Complete architecture of the archaeal RNA polymerase open complex from single-molecule FRET and NPS

    Science.gov (United States)

    Nagy, Julia; Grohmann, Dina; Cheung, Alan C. M.; Schulz, Sarah; Smollett, Katherine; Werner, Finn; Michaelis, Jens

    2015-01-01

    The molecular architecture of RNAP II-like transcription initiation complexes remains opaque due to its conformational flexibility and size. Here we report the three-dimensional architecture of the complete open complex (OC) composed of the promoter DNA, TATA box-binding protein (TBP), transcription factor B (TFB), transcription factor E (TFE) and the 12-subunit RNA polymerase (RNAP) from Methanocaldococcus jannaschii. By combining single-molecule Förster resonance energy transfer and the Bayesian parameter estimation-based Nano-Positioning System analysis, we model the entire archaeal OC, which elucidates the path of the non-template DNA (ntDNA) strand and interaction sites of the transcription factors with the RNAP. Compared with models of the eukaryotic OC, the TATA DNA region with TBP and TFB is positioned closer to the surface of the RNAP, likely providing the mechanism by which DNA melting can occur in a minimal factor configuration, without the dedicated translocase/helicase encoding factor TFIIH.

  10. Functional Interface Considerations within an Exploration Life Support System Architecture

    Science.gov (United States)

    Perry, Jay L.; Sargusingh, Miriam J.; Toomarian, Nikzad

    2016-01-01

    As notional life support system (LSS) architectures are developed and evaluated, myriad options must be considered pertaining to process technologies, components, and equipment assemblies. Each option must be evaluated relative to its impact on key functional interfaces within the LSS architecture. A leading notional architecture has been developed to guide the path toward realizing future crewed space exploration goals. This architecture includes atmosphere revitalization, water recovery and management, and environmental monitoring subsystems. Guiding requirements for developing this architecture are summarized and important interfaces within the architecture are discussed. The role of environmental monitoring within the architecture is described.

  11. Space Telecommunications Radio System (STRS) Architecture Goals/Objectives and Level 1 Requirements

    Science.gov (United States)

    Briones, Janette C.; Johnson, Sandra K.; VanDerAar, Lisa

    2007-01-01

    The Space Telecommunications Radio System (STRS) Architecture Requirements Document provides the basis for the development of an open architecture for NASA Software Defined Radios (SDRs) for space use. The main objective of this document is to evaluate the goals and objectives and high level (Level 1) requirements that have bearing on the design of the architecture. The goals and objectives will provide broad, fundamental direction and purpose. The high level requirements (Level 1) intend to guide the broader and longer term aspects aspects of the SDR Architecture and provide guidance for the development of level 2 requirements.

  12. Mapping a classification system to architectural education

    DEFF Research Database (Denmark)

    Hermund, Anders; Klint, Lars; Rostrup, Nicolai

    2015-01-01

    This paper examines to what extent a new classification system, Cuneco Classification System, CCS, proves useful in the education of architects, and to what degree the aim of an architectural education, rather based on an arts and crafts approach than a polytechnic approach, benefits from...... the distinct terminology of the classification system. The method used to examine the relationship between education, practice and the CCS bifurcates in a quantitative and a qualitative exploration: Quantitative comparison of the curriculum with the students’ own descriptions of their studies through...

  13. The sustainable IT architecture resilient information systems

    CERN Document Server

    Bonnet, P

    2009-01-01

    This book focuses on Service Oriented Architecture (SOA), the basis of sustainable and more agile IT systems that are able to adapt themselves to new trends and manage processes involving a third party. The discussion is based on the public Praxeme method and features a number of examples taken from large SOA projects which were used to rewrite the information systems of an insurance company; as such, decision-makers, creators of IT systems, programmers and computer scientists, as well as those who will use these new developments, will find this a useful resource

  14. New bus architecture for distributed avionic systems

    Energy Technology Data Exchange (ETDEWEB)

    Leonard, W.B.; Chow, K.K.

    1983-01-01

    The authors discuss a bus architecture which offers several advantages over conventional buses for a large selection of applications, and which allows for both interrupts and error checking. The bus may be expanded in the form of a tree with many processors, memories, and input/output devices distributed freely throughout the system. Therefore, it is inherently a multiprocessor bus and is well suited for systems in which a central controller controls several subordinate processors and devices. Its low overhead plus large capacity for expansion make it appropriate for a wide range of future systems.

  15. Certifying Tools for Test Reduction in Open Architecture

    Science.gov (United States)

    2012-04-30

    requirements, requirements on the subsystems, and a sound software evolution model capturing the design rationale ( Rajkumar , Lee, Sha, & Stankovic, 2010...International Conference on Embedded Systems and Applications. Rajkumar , R., Lee, I., Sha, L., & Stankovic, J. (2010). Cyber-physical systems: The

  16. Architecture of Maritime Awareness System Supplied with External Information

    Directory of Open Access Journals (Sweden)

    Stróżyna Milena

    2016-12-01

    Full Text Available In this paper, we discuss a software architecture, which has been developed for the needs of the System for Intelligent Maritime Monitoring (SIMMO. The system bases on the state-of-the-art information fusion and intelligence analysis techniques, which generates an enhanced Recognized Maritime Picture and thus supports situation analysis and decision- making. The SIMMO system aims to automatically fuse an up-to-date maritime data from Automatic Identification System (AIS and open Internet sources. Based on collected data, data analysis is performed to detect suspicious vessels. Functionality of the system is realized in a number of different modules (web crawlers, data fusion, anomaly detection, visualization modules that share the AIS and external data stored in the system’s database. The aim of this article is to demonstrate how external information can be leveraged in maritime awareness system and what software solutions are necessary. A working system is presented as a proof of concept.

  17. Development of Architectures for Internet Telerobotics Systems

    Institute of Scientific and Technical Information of China (English)

    Riyanto T. Bambang

    2007-01-01

    This paper presents our experience in developing and implementing Internet telerobotics system. Internet telerobotics system refers to a robot system controlled and monitored remotely through the Internet. A robot manipulator with five degrees of freedom, called Mentor, is employed. Client-server architecture is chosen as a platform for our Internet telerobotics system.Three generations of telerobotics systems have evolved in this research. The first generation was based on CGI and two tiered architectures, where a client presents a Graphical User Interface to the user, and utilizes the user's data entry and actions to perform requests to robot server running on a different machine. The second generation was developed using Java. We also employ Java 3D for creating and manipulating 3D geometry of manipulator links, and for constructing the structures used in rendering that geometry, resulting in 3D robot movement simulation presented to the users (clients) through their web browser.Recent development in our Internet telerobotics includes object recognition through image captured by a camera, which poses challenging problem, giving the undeterministic latency of the Internet. The third generation is centered around the use of CORBA for development platform of distributed internet telerobotics system, aimed at distributing task of telerobotics system.

  18. A Grid Architecture for Manufacturing Database System

    Directory of Open Access Journals (Sweden)

    Laurentiu CIOVICĂ

    2011-06-01

    Full Text Available Before the Enterprise Resource Planning concepts business functions within enterprises were supported by small and isolated applications, most of them developed internally. Yet today ERP platforms are not by themselves the answer to all organizations needs especially in times of differentiated and diversified demands among end customers. ERP platforms were integrated with specialized systems for the management of clients, Customer Relationship Management and vendors, Supplier Relationship Management. They were integrated with Manufacturing Execution Systems for better planning and control of production lines. In order to offer real time, efficient answers to the management level, ERP systems were integrated with Business Intelligence systems. This paper analyses the advantages of grid computing at this level of integration, communication and interoperability between complex specialized informatics systems with a focus on the system architecture and data base systems.

  19. Autocatalysis in isothermal, open systems

    Science.gov (United States)

    Gray, P.; Scott, S. K.

    1983-12-01

    In open systems, the prototype autocatalytic reaction A+2X → 3X, X → inert may display complex dependences of the stationary-state extents of conversion on flow-rate or residence time even under isothermal, well-stirred conditions. Sustained oscillations corresponding to stable limit cycles are also found. In this note we answer three questions posed by Escher and Ross in a recent paper and draw analogies between their work and earlier studies of our own. (AIP)

  20. Renaissance architecture for Ground Data Systems

    Science.gov (United States)

    Perkins, Dorothy C.; Zeigenfuss, Lawrence B.

    1994-01-01

    The Mission Operations and Data Systems Directorate (MO&DSD) has embarked on a new approach for developing and operating Ground Data Systems (GDS) for flight mission support. This approach is driven by the goals of minimizing cost and maximizing customer satisfaction. Achievement of these goals is realized through the use of a standard set of capabilities which can be modified to meet specific user needs. This approach, which is called the Renaissance architecture, stresses the engineering of integrated systems, based upon workstation/local area network (LAN)/fileserver technology and reusable hardware and software components called 'building blocks.' These building blocks are integrated with mission specific capabilities to build the GDS for each individual mission. The building block approach is key to the reduction of development costs and schedules. Also, the Renaissance approach allows the integration of GDS functions that were previously provided via separate multi-mission facilities. With the Renaissance architecture, the GDS can be developed by the MO&DSD or all, or part, of the GDS can be operated by the user at their facility. Flexibility in operation configuration allows both selection of a cost-effective operations approach and the capability for customizing operations to user needs. Thus the focus of the MO&DSD is shifted from operating systems that we have built to building systems and, optionally, operations as separate services. Renaissance is actually a continuous process. Both the building blocks and the system architecture will evolve as user needs and technology change. Providing GDS on a per user basis enables this continuous refinement of the development process and product and allows the MO&DSD to remain a customer-focused organization. This paper will present the activities and results of the MO&DSD initial efforts toward the establishment of the Renaissance approach for the development of GDS, with a particular focus on both the technical

  1. REST in practice Hypermedia and systems architecture

    CERN Document Server

    Webber, Jim; Robinson, Ian

    2010-01-01

    Why don't typical enterprise projects go as smoothly as projects you develop for the Web? Does the REST architectural style really present a viable alternative for building distributed systems and enterprise-class applications? In this insightful book, three SOA experts provide a down-to-earth explanation of REST and demonstrate how you can develop simple and elegant distributed hypermedia systems by applying the Web's guiding principles to common enterprise computing problems. You'll learn techniques for implementing specific Web technologies and patterns to solve the needs of a typical com

  2. Tiger Teams Technical Assistance: Reliable, Universal Open Architecture for Card Access to Dispense Alternative Fuels

    Energy Technology Data Exchange (ETDEWEB)

    2002-03-01

    Report discusses the dilemma of incorporating consistent, convenient, universal card access (or ''pay-at-the-pump'') systems into alternative fueling stations across the country. The state of California continues to be in the forefront of implementing alternative fuels for transportation applications. Aggressive efforts to deploy alternative fuel vehicles (AFVs) in California have highlighted the need to provide adequate fueling stations and develop appropriate, user-friendly means to purchase fuel at the pump. Since these fuels are not typically provided by petroleum companies at conventional fueling stations, and acceptance of cash is often not an option, a payment method must be developed that is consistent with the way individual AFV operators are accustomed to purchasing automotive fuels--with a credit card. At the same time, large fleets like the California Department of General Services must be able to use a single fuel card that offers comprehensive fleet management services. The Gas Technology Institute's Infrastructure Working Group (IWG) and its stakeholders have identified the lack of a common card reader system as a hurdle to wider deployment of AFVs in California and the United States. In conjunction with the U.S. Department of Energy's (DOE) National Clean Cities Program, the IWG has outlined a multi-phased strategy to systematically address the barriers to develop a more ''open'' architecture that's similar to the way gasoline and diesel are currently dispensed. Under the auspices of the IWG, survey results were gathered (circa 1999) from certain fuel providers, as a means to more carefully study card reader issues and their potential solutions. Pilot programs featuring card reader systems capable of accepting wider payment options have been attempted in several regions of the United States with mixed success. In early 2001, DOE joined the National Renewable Energy Laboratory (NREL), the

  3. Model Driven Architecture (MDA: Integration and Model Reuse for Open Source eLearning Platforms

    Directory of Open Access Journals (Sweden)

    Blasius Lofi Dewanto

    2005-02-01

    Full Text Available Open Source (OS community offers numerous eLearning platforms of both types: Learning Management Systems (LMS and Learning Content Systems (LCS. General purpose OS intermediaries such as SourceForge, ObjectWeb, Apache or specialized intermediaries like CampusSource reduce the cost to locate such eLearning platforms. Still, it is impossible to directly compare the functionalities of those OS software products without performing detailed testing on each product. Some articles available from eLearning Wikipedia show comparisons between eLearning platforms which can help, but at the end they barely serve as documentation which are becoming out of date quickly (1. The absence of integration activities between OS eLearning platforms - which are sometimes quite similar in terms of functionalities and implementation technologies - is sometimes critical since most of the OS projects possess small financial and human resources. This paper shows a possible solution for these barriers of OS eLearning platforms. We propose the Model Driven Architecture (MDA concept to capture functionalities and to identify similarities between available OS eLearning platforms. This contribution evolved from a fruitful discussion at the 2nd CampusSource Developer Conference at the University of Muenster (27th August 2004.Die Open Source-Community bietet zahlreiche eLearning-Plattformen an: Learning Management-Systeme (LMS sowie Learning Content-Systeme (LCS. Allgemeine Open-Source-Mediatoren, wie SourceForge, ObjectWeb, Apache und der eLearning-spezifische Mediator CampusSource ermöglichen eine einfache Suche nach eLearning-Softwareprodukten. Ein Vergleich unterschiedlicher Plattformen in Bezug auf ihre Funktionalitäten ist jedoch aufwändig. Beiträge aus der “eLearning Wikipedia” können kaum als Entscheidungsgrundlage genutzt werden, da sie schnell veraltet sind (1. Zudem fehlen derzeit Aktivitäten zur Integration von Open Source-eLearning-Plattformen, die oft

  4. An architecture based on SOA and virtual enterprise principles: OpenNebula for cloud deployment

    CSIR Research Space (South Africa)

    Mvelase, P

    2012-04-01

    Full Text Available by established legacy infrastructures, thus reducing the complexity of deploying cloud solutions. The author envisions a cloud-based system built on service oriented architecture (SOA) principles and virtual enterprise (VE) principles as a solution to enhancing...

  5. STARS: The Space Transportation Architecture Risk System

    Science.gov (United States)

    Greenberg, Joel S.

    1997-01-01

    Because of the need to perform comparisons between transportation systems that are likely to have significantly different levels of risk, both because of differing degrees of freedom in achieving desired performance levels and their different states of development and utilization, an approach has been developed for performing early comparisons of transportation architectures explicitly taking into account quantitative measures of uncertainty and resulting risk. The approach considers the uncertainty associated with the achievement of technology goals, the effect that the achieved level of technology will have on transportation system performance and the relationship between transportation system performance/capability and the ability to accommodate variations in payload mass. The consequences of system performance are developed in terms of expected values and associated standard deviations of nonrecurring, recurring and the present value of transportation system life cycle cost. Typical results are presented to illustrate the application of the methodology.

  6. The AI Bus architecture for distributed knowledge-based systems

    Science.gov (United States)

    Schultz, Roger D.; Stobie, Iain

    1991-01-01

    The AI Bus architecture is layered, distributed object oriented framework developed to support the requirements of advanced technology programs for an order of magnitude improvement in software costs. The consequent need for highly autonomous computer systems, adaptable to new technology advances over a long lifespan, led to the design of an open architecture and toolbox for building large scale, robust, production quality systems. The AI Bus accommodates a mix of knowledge based and conventional components, running on heterogeneous, distributed real world and testbed environment. The concepts and design is described of the AI Bus architecture and its current implementation status as a Unix C++ library or reusable objects. Each high level semiautonomous agent process consists of a number of knowledge sources together with interagent communication mechanisms based on shared blackboards and message passing acquaintances. Standard interfaces and protocols are followed for combining and validating subsystems. Dynamic probes or demons provide an event driven means for providing active objects with shared access to resources, and each other, while not violating their security.

  7. Nova control system: goals, architecture, and system design

    Energy Technology Data Exchange (ETDEWEB)

    Suski, G.J.; Duffy, J.M.; Gritton, D.G.; Holloway, F.W.; Krammen, J.R.; Ozarski, R.G.; Severyn, J.R.; Van Arsdall, P.J.

    1982-05-19

    The control system for the Nova laser must operate reliably in a harsh pulse power environment and satisfy requirements of technical functionality, flexibility, maintainability and operability. It is composed of four fundamental subsystems: Power Conditioning, Alignment, Laser Diagnostics, and Target Diagnostics, together with a fifth, unifying subsystem called Central Controls. The system architecture utilizes a collection of distributed microcomputers, minicomputers, and components interconnected through high speed fiber optic communications systems. The design objectives, development strategy and architecture of the overall control system and each of its four fundamental subsystems are discussed. Specific hardware and software developments in several areas are also covered.

  8. The Architecture of Financial Risk Management Systems

    Directory of Open Access Journals (Sweden)

    Iosif ZIMAN

    2013-01-01

    Full Text Available The architecture of systems dedicated to risk management is probably one of the more complex tasks to tackle in the world of finance. Financial risk has been at the center of attention since the explosive growth of financial markets and even more so after the 2008 financial crisis. At multiple levels, financial companies, financial regulatory bodies, governments and cross-national regulatory bodies, all have put the subject of financial risk in particular and the way it is calculated, managed, reported and monitored under intense scrutiny. As a result the technology underpinnings which support the implementation of financial risk systems has evolved considerably and has become one of the most complex areas involving systems and technology in the context of the financial industry. We present the main paradigms, require-ments and design considerations when undertaking the implementation of risk system and give examples of user requirements, sample product coverage and performance parameters.

  9. Moving droplets between closed and open microfluidic systems.

    Science.gov (United States)

    Wang, Weiqiang; Jones, Thomas B

    2015-05-21

    In electric-field-mediated droplet microfluidics, there are two distinct architectures - closed systems using parallel-plate electrodes and open systems using coplanar electrodes fabricated on an open substrate. An architecture combining both closed and open systems on a chip would facilitate many of the chemical and biological processes now envisioned for the laboratory on a chip. To accomplish such an integration requires a means to move droplets back and forth between the two. This paper presents an investigation of the requirements for such manipulation of both water and oil droplets. The required wetting conditions for a droplet to cross the open/closed boundary is revealed by a force balance analysis and predictions of this model are compared to experimental results. Water droplets can be moved between closed and open systems by electrowetting actuation; droplet detachment from the upper plate is facilitated by the use of beveled edge. The force model predicts that driving an oil droplet from a closed to an open structure requires an oleophobic surface. This prediction has been tested and confirmed using silicon wafers made oleophobic by re-entrant microstructures etched into the surface.

  10. An Open Source Software Platform for Visualizing and Teaching Conservation Tasks in Architectural Heritage Environments

    Science.gov (United States)

    San Jose, I. Ignacio; Martinez, J.; Alvarez, N.; Fernandez, J. J.; Delgado, F.; Martinez, R.; Puche, J. C.; Finat, J.

    2013-07-01

    In this work we present a new software platform for interactive volumetric visualization of complex architectural objects and their applications to teaching and training conservation interventions in Architectural Cultural Heritage. Photogrammetric surveying is performed by processing the information arising from image- and range-based devices. Our visualization application is based on an adaptation of WebGL open standard; the performed adaptation allows to import open standards and an interactive navigation of 3D models in ordinary web navigators with a good performance. The Visualization platform is scalable and can be applied to urban environments, provided open source files be used; CityGML is an open standard based on a geometry -driven Ontology which is compatible with this approach. We illustrate our results with examples concerning to very damaged churches and a urban district of Segovia (World Cultural Heritage). Their connection with appropriate database eases the building evolution and interventions tracking. We have incorporated some preliminary examples to illustrate Advanced Visualization Tools and architectural e-Learning software platform which have been created for assessing conservation and restoration tasks in very damaged buildings. First version of the Advanced Visualization application has been developed in the framework of ADISPA Spanish Project Results. Our results are illustrated with the application of these software applications to several very damaged cultural heritage buildings in rural zones of Castilla y Leon (Spain).

  11. The architecture modeling of LAMOST Observatory control system

    Science.gov (United States)

    Wang, Jian; Jin, Ge; Huang, Kun; Li, Feng; Ren, Jian; Yu, Xiao-Qi

    2005-06-01

    For the complexity of the LAMOST, long time development for the LAMOST and long life-cycle of the OCS system, the OCS must have a flexible, extensible, maintainable software system. It is required that the OCS has a flexible and extensible architecture. In this paper the concepts of architecture and the OCS are introduced. Referring many kinds of architecture pattern and based on the OCS physical models, the architecture of the OCS is established which is a component-based layered system using many patterns such as the MVC and proxy. The static model and dynamic model of architecture are discussed and realized at the phase of 1 level OCS.

  12. Systems approaches to study root architecture dynamics

    Directory of Open Access Journals (Sweden)

    Candela eCuesta

    2013-12-01

    Full Text Available The plant root system is essential for providing anchorage to the soil, supplying minerals and water, and synthesizing metabolites. It is a dynamic organ modulated by external cues such as environmental signals, water and nutrients availability, salinity and others. Lateral roots are initiated from the primary root post-embryonically, after which they progress through discrete developmental stages which can be independently controlled, providing a high level of plasticity during root system formation.Within this review, main contributions are presented, from the classical forward genetic screens to the more recent high-throughput approaches, combined with computer model predictions, dissecting how lateral roots and thereby root system architecture is established and developed.

  13. Mapping a classification system to architectural education

    DEFF Research Database (Denmark)

    Hermund, Anders; Klint, Lars; Rostrup, Nicolai

    2015-01-01

    a questionnaire survey among 88 students in graduate school. Qualitative interviews with a handful of practicing architects, to be able to cross check the relevance of the education with the profession. The examination indicates the need of a new definition, in addition to the CCS’s scale, covering the earliest......This paper examines to what extent a new classification system, Cuneco Classification System, CCS, proves useful in the education of architects, and to what degree the aim of an architectural education, rather based on an arts and crafts approach than a polytechnic approach, benefits from...... the distinct terminology of the classification system. The method used to examine the relationship between education, practice and the CCS bifurcates in a quantitative and a qualitative exploration: Quantitative comparison of the curriculum with the students’ own descriptions of their studies through...

  14. A Highly Secure Mobile Agent System Architecture

    Science.gov (United States)

    Okataku, Yasukuni; Okutomi, Hidetoshi; Yoshioka, Nobukazu; Ohgishi, Nobuyuki; Honiden, Shinichi

    We propose a system architecture for mobile agents to improve their security in the environments of insecure networks and non-sophisticated terminals such as PDAs. As mobile agents freely migrate onto their favorite terminals through insecure networks or terminals, it is not appropriate for them to store some secret information for authentication and encryption/decryption. We introduce one and more secure nodes(OASIS NODE) for securely generating and verifying authentication codes. The each agent’s data are encrypted by a pseudo-chaos cipher mechanism which doesn’t need any floating processing co-processor. We’ve constructed a prototype system on a Java mobile agent framework, “Bee-gent" which implements the proposed authentication and cipher mechanisms, and evaluated their performances and their applicability to business fields such as an auction system by mobile agents.

  15. System Architecture of a Mixed Reality Framework

    Directory of Open Access Journals (Sweden)

    Patrick Dähne

    2007-05-01

    Full Text Available In this paper the software architecture of a framework which simplifies the development of applications in the area of Virtual and Augmented Reality is presented. It is based on VRML/X3D to enable rendering of audio-visual information. We extended our VRML rendering system by a device management system that is based on the concept of a data-flow graph. The aim of the system is to create Mixed Reality (MR applications simply by plugging together small prefabricated software components, instead of compiling monolithic C++ applications. The flexibility and the advantages of the presented framework are explained on the basis of an exemplary implementation of a classic Augmented Realityapplication and its extension to a collaborative remote expert scenario.

  16. Control Architecture for Future Power Systems

    DEFF Research Database (Denmark)

    Heussen, Kai

    This project looks at control of future electric power grids with a high proportion of wind power and a large number of decentralized power generation, consumption and storage units participating to form a reliable supply of electrical energy. The first objective is developing a method...... for assessment of control architecture of electric power systems with a means-ends perspective. Given this purpose-oriented understanding of a power system, the increasingly stochastic nature of this problem shall be addressed and approaches for robust, distributed control will be proposed and analyzed....... The introduction of close-to-real-time markets is envisioned to enable fast distributed resource allocation while guaranteeing system stability. Electric vehicles will be studied as a means of distributed reversible energy storage and a flexible power electronic interface, with application to the case...

  17. Understanding the Lunar System Architecture Design Space

    Science.gov (United States)

    Arney, Dale C.; Wilhite, Alan W.; Reeves, David M.

    2013-01-01

    Based on the flexible path strategy and the desire of the international community, the lunar surface remains a destination for future human exploration. This paper explores options within the lunar system architecture design space, identifying performance requirements placed on the propulsive system that performs Earth departure within that architecture based on existing and/or near-term capabilities. The lander crew module and ascent stage propellant mass fraction are primary drivers for feasibility in multiple lander configurations. As the aggregation location moves further out of the lunar gravity well, the lunar lander is required to perform larger burns, increasing the sensitivity to these two factors. Adding an orbit transfer stage to a two-stage lunar lander and using a large storable stage for braking with a one-stage lunar lander enable higher aggregation locations than Low Lunar Orbit. Finally, while using larger vehicles enables a larger feasible design space, there are still feasible scenarios that use three launches of smaller vehicles.

  18. Architecture of WEST plasma control system

    Energy Technology Data Exchange (ETDEWEB)

    Ravenel, N., E-mail: nathalie.ravenel@cea.fr [CEA, IRFM, F-13108 Saint-Paul-lez-Durance (France); Nouailletas, R.; Barana, O.; Brémond, S.; Moreau, P.; Guillerminet, B.; Balme, S.; Allegretti, L. [CEA, IRFM, F-13108 Saint-Paul-lez-Durance (France); Mannori, S. [ENEA C.R. Brasimone (Italy)

    2014-05-15

    To operate advanced plasma scenario (long pulse with high stored energy) in present and future tokamak devices under safe operation conditions, the control requirements of the plasma control system (PCS) leads to the development of advanced feedback control and real time handling exceptions. To develop these controllers and these exceptions handling strategies, a project aiming at setting up a flight simulator has started at CEA in 2009. Now, the new WEST (W Environment in Steady-state Tokamak) project deals with modifying Tore Supra into an ITER-like divertor tokamak. This upgrade impacts a lot of systems including Tore Supra PCS and is the opportunity to improve the current PCS architecture to implement the previous works and to fulfill the needs of modern tokamak operation. This paper is dealing with the description of the architecture of WEST PCS. Firstly, the requirements will be presented including the needs of new concepts (segments configuration, alternative (or backup) scenario, …). Then, the conceptual design of the PCS will be described including the main components and their functions. The third part will be dedicated to the proposal RT framework and to the technologies that we have to implement to reach the requirements.

  19. System Engineering Strategy for Distributed Multi-Purpose Simulation Architectures

    Science.gov (United States)

    Bhula, Dlilpkumar; Kurt, Cindy Marie; Luty, Roger

    2007-01-01

    This paper describes the system engineering approach used to develop distributed multi-purpose simulations. The multi-purpose simulation architecture focuses on user needs, operations, flexibility, cost and maintenance. This approach was used to develop an International Space Station (ISS) simulator, which is called the International Space Station Integrated Simulation (ISIS)1. The ISIS runs unmodified ISS flight software, system models, and the astronaut command and control interface in an open system design that allows for rapid integration of multiple ISS models. The initial intent of ISIS was to provide a distributed system that allows access to ISS flight software and models for the creation, test, and validation of crew and ground controller procedures. This capability reduces the cost and scheduling issues associated with utilizing standalone simulators in fixed locations, and facilitates discovering unknowns and errors earlier in the development lifecycle. Since its inception, the flexible architecture of the ISIS has allowed its purpose to evolve to include ground operator system and display training, flight software modification testing, and as a realistic test bed for Exploration automation technology research and development.

  20. Developing a System Architecture for Holonic Shop Floor Control

    DEFF Research Database (Denmark)

    Sørensen, Christian; Langer, Gilad; Alting, Leo

    1998-01-01

    This paper describes the results of research regarding the emerging theory of Holonic Manufacturing Systems. This theory and in particular its corresponding reference architecture serves as the basis for the development of a system-architecture for shop floor control systems in a multi-cellular c......This paper describes the results of research regarding the emerging theory of Holonic Manufacturing Systems. This theory and in particular its corresponding reference architecture serves as the basis for the development of a system-architecture for shop floor control systems in a multi...

  1. System architecture for the Canadian interim mobile satellite system

    Science.gov (United States)

    Shariatmadar, M.; Gordon, K.; Skerry, B.; Eldamhougy, H.; Bossler, D.

    1988-05-01

    The system architecture for the Canadian Interim Mobile Satellite Service (IMSS) which is planned for commencement of commercial service in late 1989 is reviewed. The results of an associated field trial program which was carried out to determine the limits of coverage and the preliminary performance characteristics of the system are discussed.

  2. Strategies for Competition Beyond Open Architecture (OA): Acquisition at the Edge of Chaos

    Science.gov (United States)

    2014-11-08

    coupling between population density ( market size) and the evolution of an emergent trait such as competition. We propose the use of the Component... market size) and the evolution of an emergent trait such as competition. We propose the use of the Component Competition Readiness Level (CCRL...UAS Control Segment (UCS) Architecture, The Open Group Future Airborne Capability Environment (FACE™), OMS, and Acoustic Rapid Commercial-off-the

  3. Aboveground Biomass of Glossy Buckthorn is Similar in Open and Understory Environments but Architectural Strategy Differs

    Directory of Open Access Journals (Sweden)

    Caroline Hamelin

    2015-04-01

    Full Text Available The exotic shrub glossy buckthorn (Frangula alnus is a great concern among forest managers because it invades both open and shaded environments. To evaluate if buckthorn grows similarly across light environments, and if adopting different shapes contributes to an efficient use of light, we compared buckthorns growing in an open field and in the understory of a mature hybrid poplar plantation. For a given age, the relationships describing aboveground biomass of buckthorns in the open field and in the plantation were not significantly different. However, we observed a significant difference between the diameter-height relationships in the two environments. These results suggest a change in buckthorn’s architecture, depending on the light environment in which it grows. Buckthorn adopts either an arborescent shape under a tree canopy, or a shrubby shape in an open field, to optimally capture the light available. This architectural plasticity helps explain a similar invasion success for glossy buckthorn growing in both open and shaded environments, at least up to the canopy closure level of the plantation used for this study.

  4. An Open Architecture to Support Social and Health Services in a Smart TV Environment.

    Science.gov (United States)

    Costa, Carlos Rivas; Anido-Rifon, Luis E; Fernandez-Iglesias, Manuel J

    2017-03-01

    To design, implement, and test a solution to provide social and health services for the elderly at home based on smart TV technologies and access to all services. The architecture proposed is based on an open software platform and standard personal computing hardware. This provides great flexibility to develop new applications over the underlying infrastructure or to integrate new devices, for instance to monitor a broad range of vital signs in those cases where home monitoring is required. An actual system as a proof-of-concept was designed, implemented, and deployed. Applications range from social network clients to vital signs monitoring; from interactive TV contests to conventional online care applications such as medication reminders or telemedicine. In both cases, the results have been very positive, confirming the initial perception of the TV as a convenient, easy-to-use technology to provide social and health care. The TV set is a much more familiar computing interface for most senior users, and as a consequence, smart TVs become a most convenient solution for the design and implementation of applications and services targeted to this user group. This proposal has been tested in real setting with 62 senior people at their homes. Users included both individuals with experience using computers and others reluctant to them.

  5. Dynamic architecture of a minimal RNA polymerase II open promoter complex.

    Science.gov (United States)

    Treutlein, Barbara; Muschielok, Adam; Andrecka, Joanna; Jawhari, Anass; Buchen, Claudia; Kostrewa, Dirk; Hög, Friederike; Cramer, Patrick; Michaelis, Jens

    2012-04-27

    The open promoter complex (OC) is a central intermediate during transcription initiation that contains a DNA bubble. Here, we employ single-molecule Förster resonance energy transfer experiments and Nano-Positioning System analysis to determine the three-dimensional architecture of a minimal OC consisting of promoter DNA, including a TATA box and an 11-nucleotide mismatched region around the transcription start site, TATA box-binding protein (TBP), RNA polymerase (Pol) II, and general transcription factor (TF)IIB and TFIIF. In this minimal OC, TATA-DNA and TBP reside above the Pol II cleft between clamp and protrusion domains. Downstream DNA is dynamically loaded into and unloaded from the Pol II cleft at a timescale of seconds. The TFIIB core domain is displaced from the Pol II wall, where it is located in the closed promoter complex. These results reveal large overall structural changes during the initiation-elongation transition, which are apparently accommodated by the intrinsic flexibility of TFIIB.

  6. Open Computer Forensic Architecture a Way to Process Terabytes of Forensic Disk Images

    Science.gov (United States)

    Vermaas, Oscar; Simons, Joep; Meijer, Rob

    This chapter describes the Open Computer Forensics Architecture (OCFA), an automated system that dissects complex file types, extracts metadata from files and ultimately creates indexes on forensic images of seized computers. It consists of a set of collaborating processes, called modules. Each module is specialized in processing a certain file type. When it receives a so called 'evidence', the information that has been extracted so far about the file together with the actual data, it either adds new information about the file or uses the file to derive a new 'evidence'. All evidence, original and derived, is sent to a router after being processed by a particular module. The router decides which module should process the evidence next, based upon the metadata associated with the evidence. Thus the OCFA system can recursively process images until from every compound file the embedded files, if any, are extracted, all information that the system can derive, has been derived and all extracted text is indexed. Compound files include, but are not limited to, archive- and zip-files, disk images, text documents of various formats and, for example, mailboxes. The output of an OCFA run is a repository full of derived files, a database containing all extracted information about the files and an index which can be used when searching. This is presented in a web interface. Moreover, processed data is easily fed to third party software for further analysis or to be used in data mining or text mining-tools. The main advantages of the OCFA system are Scalability, it is able to process large amounts of data.

  7. A Hybrid Architecture for Web-based Expert Systems

    OpenAIRE

    Neil Dunstan

    2012-01-01

    A recent technique is to represent the knowledge base of an expert system in XML format. XML parsers are then used to convert XML data into expert system language code. The code is executed or interpreted when providing responses to user queries. Web-based expert system (WBES) architectures may be characterized according to where the application knowledge base resides. Applications of both client and server-sided WBES architectures appear in the literature. A hybrid architecture is proposed w...

  8. Hierarchical Architecture for Enterprise Information System under Dynamic Environment

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    In a dynamic environment, it is vital for enterpris e to have flexible information system architecture to integrate ERP, Supply Chain Management (SCM) and E-Commerce (EC). The traditional systems are established o n the ERP-centered flat architecture. This architecture has some disadvantages in supporting the dynamics of enterprises. Firstly, ERP is already a very expens ive and complex system; the extension based on it can only increase the complexi ty and make the implementation more expensive and risk...

  9. SOFTWARE ARCHITECTURE FOR FIJI NATIONAL UNIVERSITY CAMPUS INFORMATION SYSTEMS

    Directory of Open Access Journals (Sweden)

    Bimal Aklesh Kumar

    2011-04-01

    Full Text Available Software Architecture defines the overview of the system which consists of various components and their relationships among the software. Architectural design is very important in the development of large scale software solution and plays a very active role in achieving business goals, quality and reusable solution. It is often difficult to choose the best software architecture for your system from the several candidate types available. In this paper we look at the several architectural types and compare them based on the key requirements of our system, and select the most appropriate architecture for the implementation of campus information systems at Fiji National University. Finally we provide details of proposed architecture and outline future plans for implementation of our system.

  10. Software Architecture for Fiji National University Campus Information Systems

    CERN Document Server

    Kumar, Bimal Aklesh

    2011-01-01

    Software Architecture defines the overview of the system which consists of various components and their relationships among the software. Architectural design is very important in the development of large scale software solution and plays a very active role in achieving business goals, quality and reusable solution. It is often difficult to choose the best software architecture for your system from the several candidate types available. In this paper we look at the several architectural types and compare them based on the key requirements of our system, and select the most appropriate architecture for the implementation of campus information systems at Fiji National University. Finally we provide details of proposed architecture and outline future plans for implementation of our system.

  11. Hybridization of Architectural Styles for Integrated Enterprise Information Systems

    Science.gov (United States)

    Bagusyte, Lina; Lupeikiene, Audrone

    Current enterprise systems engineering theory does not provide adequate support for the development of information systems on demand. To say more precisely, it is forming. This chapter proposes the main architectural decisions that underlie the design of integrated enterprise information systems. This chapter argues for the extending service-oriented architecture - for merging it with component-based paradigm at the design stage and using connectors of different architectural styles. The suitability of general-purpose language SysML for the modeling of integrated enterprise information systems architectures is described and arguments pros are presented.

  12. Information System Architectures: Representation, Planning and Evaluation

    Directory of Open Access Journals (Sweden)

    André Vasconcelos

    2003-12-01

    Full Text Available In recent years organizations have been faced with increasingly demanding business environments - pushed by factors like market globalization, need for product and service innovation and product life cycle reduction - and with new information technologies changes and opportunities- such as the Component-off-the-shelf paradigm, the telecommunications improvement or the Enterprise Systems off-the-shelf modules availability - all of which impose a continuous redraw and reorganization of business strategies and processes. Nowadays, Information Technology makes possible high-speed, efficient and low cost access to the enterprise information, providing the means for business processes automation and improvement. In spite of these important technological progresses, information systems that support business, do not usually answer efficiently enough to the continuous demands that organizations are faced with, causing non-alignment between business and information technologies (IT and therefore reducing organization competitive abilities. This article discusses the vital role that the definition of an Information System Architecture (ISA has in the development of Enterprise Information Systems that are capable of staying fully aligned with organization strategy and business needs. In this article the authors propose a restricted collection of founding and basis operations, which will provide the conceptual paradigm and tools for proper ISA handling. These tools are then used in order to represent, plan and evaluate an ISA of a Financial Group.

  13. Resonances in open quantum systems

    Science.gov (United States)

    Eleuch, Hichem; Rotter, Ingrid

    2017-02-01

    The Hamilton operator of an open quantum system is non-Hermitian. Its eigenvalues are generally complex and provide not only the energies but also the lifetimes of the states of the system. The states may couple via the common environment of scattering wave functions into which the system is embedded. This causes an external mixing (EM) of the states. Mathematically, EM is related to the existence of singular (the so-called exceptional) points. The eigenfunctions of a non-Hermitian operator are biorthogonal, in contrast to the orthogonal eigenfunctions of a Hermitian operator. A quantitative measure for the ratio between biorthogonality and orthogonality is the phase rigidity of the wave functions. At and near an exceptional point (EP), the phase rigidity takes its minimum value. The lifetimes of two nearby eigenstates of a quantum system bifurcate under the influence of an EP. At the parameter value of maximum width bifurcation, the phase rigidity approaches the value one, meaning that the two eigenfunctions become orthogonal. However, the eigenfunctions are externally mixed at this parameter value. The S matrix and therewith the cross section do contain, in the one-channel case, almost no information on the EM of the states. The situation is completely different in the case with two (or more) channels where the resonance structure is strongly influenced by the EM of the states and interesting features of non-Hermitian quantum physics are revealed. We provide numerical results for two and three nearby eigenstates of a non-Hermitian Hamilton operator that are embedded in one common continuum and are influenced by two adjoining EPs. The results are discussed. They are of interest for an experimental test of the non-Hermitian quantum physics as well as for applications.

  14. Research of IDSS Architecture Based on Hybrid Systems

    Institute of Scientific and Technical Information of China (English)

    MA Biao; YANG Bao-an

    2005-01-01

    This paper discusses the necessity of building IDSS on hybrid systems, and adopts XML technology to manage isomeric knowledge in hybrid systems. The paper proposes a new architecture of hybrid systems based IDSS whose core system is isomeric knowledge system. The architecture is composed of knowledge component, problems processing system, data component and intelligent user interface. This new architecture aims to enhance the capability of integrating hybrid systems, to improve the supporting effectiveness of decision-making and the intelligent level of IDSS, and tries a new way to elevate the system's ability of handling and learning knowledge.

  15. Performance analysis and overload control of an open service access (OSA) architecture

    Science.gov (United States)

    Andersson, Jens K.; Nyberg, Christian; Kihl, Maria

    2003-08-01

    The trend of the service architectures developed in telecommunications today is that they should be open in the sense that they can communicate over the borders of different networks. Instead of each network having their own service architecture with their own applications, all networks should be able to use the same applications. 3GPP, the organization developing specifications for the 3G networks has specified the standard Open Service Access (OSA), as a part of the 3G specification. OSA offers different Application Protocol Interfaces that enable an application that resides outside a network to use the capabilities of the network. This paper analyses the performance of an OSA gateway. It is examined how the overload control can be dealt with in a way to best satisfy the operators and the 3'rd parties. There are some guiding principles in the specifications, but a lot of decisions have to be made by the implementors of application servers and OSA gateways. Proposals of different requirements for an OSA architecture exist such as, minimum amount of accepted calls per second and time constraint for the maximal total delay for an application. Maximal and fair throughput have to be prioritized from the 3'rd parties view, but profit is the main interest from the operators point of view. Therefore this paper examines a priority based proposal of an overload control mechanism taking these aspects and requirements into account.

  16. Architectural Review of Load Balancing Single System Image

    Directory of Open Access Journals (Sweden)

    B. S. Ahmed

    2008-01-01

    Full Text Available Problem statement: With the growing popularity of clustering application combined with apparent usability, the single system image is in the limelight and actively studied as an alternative solution for computational intensive applications as well as the platform for next evolutionary grid computing era. Approach: Existing researches in this field concentrated on various features of Single System Images like file system and memory management. However, an important design consideration for this environment is load allocation and balancing that is usually handled by an automatic process migration daemon. Literature shows that the design concepts and factors that affect the load balancing feature in an SSI system are not clear. Result: This study will review some of the most popular architecture and algorithms used in load balancing single system image. Various implementations from the past to present will be presented while focusing on the factors that affect the performance of such system. Conclusion: The study showed that although there are some successful open source systems, the wide range of implemented systems investigated that research activity should concentrate on the systems that have already been proposed and proved effectiveness to achieve a high quality load balancing system.

  17. Software architecture of INO340 telescope control system

    Science.gov (United States)

    Ravanmehr, Reza; Khosroshahi, Habib

    2016-08-01

    The software architecture plays an important role in distributed control system of astronomical projects because many subsystems and components must work together in a consistent and reliable way. We have utilized a customized architecture design approach based on "4+1 view model" in order to design INOCS software architecture. In this paper, after reviewing the top level INOCS architecture, we present the software architecture model of INOCS inspired by "4+1 model", for this purpose we provide logical, process, development, physical, and scenario views of our architecture using different UML diagrams and other illustrative visual charts. Each view presents INOCS software architecture from a different perspective. We finish the paper by science data operation of INO340 and the concluding remarks.

  18. System deployment optimization in architecture design

    Institute of Scientific and Technical Information of China (English)

    Xiaoxue Zhang; Shu Tang; Aimin Luo; Xueshan Luo

    2014-01-01

    Optimization of architecture design has recently drawn research interest. System deployment optimization (SDO) refers to the process of optimizing systems that are being deployed to activi-ties. This paper first formulates a mathematical model to theorize and operationalize the SDO problem and then identifies optimal so-lutions to solve the SDO problem. In the solutions, the success rate of the combat task is maximized, whereas the execution time of the task and the cost of changes in the system structure are mini-mized. The presented optimized algorithm generates an optimal solution without the need to check the entire search space. A novel method is final y proposed based on the combination of heuristic method and genetic algorithm (HGA), as wel as the combination of heuristic method and particle swarm optimization (HPSO). Experi-ment results show that the HPSO method generates solutions faster than particle swarm optimization (PSO) and genetic algo-rithm (GA) in terms of execution time and performs more efficiently than the heuristic method in terms of determining the best solution.

  19. LSST active optics system software architecture

    Science.gov (United States)

    Thomas, Sandrine J.; Chandrasekharan, Srinivasan; Lotz, Paul; Xin, Bo; Claver, Charles; Angeli, George; Sebag, Jacques; Dubois-Felsmann, Gregory P.

    2016-08-01

    The Large Synoptic Survey Telescope (LSST) is an 8-meter class wide-field telescope now under construction on Cerro Pachon, near La Serena, Chile. This ground-based telescope is designed to conduct a decade-long time domain survey of the optical sky. In order to achieve the LSST scientific goals, the telescope requires delivering seeing limited image quality over the 3.5 degree field-of-view. Like many telescopes, LSST will use an Active Optics System (AOS) to correct in near real-time the system aberrations primarily introduced by gravity and temperature gradients. The LSST AOS uses a combination of 4 curvature wavefront sensors (CWS) located on the outside of the LSST field-of-view. The information coming from the 4 CWS is combined to calculate the appropriate corrections to be sent to the 3 different mirrors composing LSST. The AOS software incorporates a wavefront sensor estimation pipeline (WEP) and an active optics control system (AOCS). The WEP estimates the wavefront residual error from the CWS images. The AOCS determines the correction to be sent to the different degrees of freedom every 30 seconds. In this paper, we describe the design and implementation of the AOS. More particularly, we will focus on the software architecture as well as the AOS interactions with the various subsystems within LSST.

  20. A Model-Based Systems Engineering Methodology for Employing Architecture In System Analysis: Developing Simulation Models Using Systems Modeling Language Products to Link Architecture and Analysis

    Science.gov (United States)

    2016-06-01

    ENGINEERING METHODOLOGY FOR EMPLOYING ARCHITECTURE IN SYSTEM ANALYSIS: DEVELOPING SIMULATION MODELS USING SYSTEMS MODELING LANGUAGE PRODUCTS TO LINK... ENGINEERING METHODOLOGY FOR EMPLOYING ARCHITECTURE IN SYSTEM ANALYSIS: DEVELOPING SIMULATION MODELS USING SYSTEMS MODELING LANGUAGE PRODUCTS TO LINK...to model-based systems engineering (MBSE) by formally defining an MBSE methodology for employing architecture in system analysis (MEASA) that presents

  1. Developing A System Architecture For Holonic Shop Floor Control

    DEFF Research Database (Denmark)

    Sørensen, Christian; Langer, Gilad; Alting, Leo

    1998-01-01

    This paper describes theresults of research regarding the emerging theory of Holonic Manufacturing Systems. This theory and in particular itscorresponding reference architecture serves as the basis for thedevelopment of a system-architecture for shop floor controlsystems in a multi-cellular conte...

  2. Model-based safety architecture framework for complex systems

    NARCIS (Netherlands)

    Schuitemaker, K.; Rajabalinejad, M.; Braakhuis, J.G.; Podofilini, Luca; Sudret, Bruno; Stojadinovic, Bozidar; Zio, Enrico; Kröger, Wolfgang

    2015-01-01

    The shift to transparency and rising need of the general public for safety, together with the increasing complexity and interdisciplinarity of modern safety-critical Systems of Systems (SoS) have resulted in a Model-Based Safety Architecture Framework (MBSAF) for capturing and sharing architectural

  3. SAFARI optical system architecture and design concept

    Science.gov (United States)

    Pastor, Carmen; Jellema, Willem; Zuluaga-Ramírez, Pablo; Arrazola, David; Fernández-Rodriguez, M.; Belenguer, Tomás.; González Fernández, Luis M.; Audley, Michael D.; Evers, Jaap; Eggens, Martin; Torres Redondo, Josefina; Najarro, Francisco; Roelfsema, Peter

    2016-07-01

    SpicA FAR infrared Instrument, SAFARI, is one of the instruments planned for the SPICA mission. The SPICA mission is the next great leap forward in space-based far-infrared astronomy and will study the evolution of galaxies, stars and planetary systems. SPICA will utilize a deeply cooled 2.5m-class telescope, provided by European industry, to realize zodiacal background limited performance, and high spatial resolution. The instrument SAFARI is a cryogenic grating-based point source spectrometer working in the wavelength domain 34 to 230 μm, providing spectral resolving power from 300 to at least 2000. The instrument shall provide low and high resolution spectroscopy in four spectral bands. Low Resolution mode is the native instrument mode, while the high Resolution mode is achieved by means of a Martin-Pupplet interferometer. The optical system is all-reflective and consists of three main modules; an input optics module, followed by the Band and Mode Distributing Optics and the grating Modules. The instrument utilizes Nyquist sampled filled linear arrays of very sensitive TES detectors. The work presented in this paper describes the optical design architecture and design concept compatible with the current instrument performance and volume design drivers.

  4. Planning an open and IHE-compliant architecture for a filmless and paperless hospital

    Science.gov (United States)

    Ratib, Osman M.; McCoy, J. Michael; Kho, Hwa T.; Yu, Reba

    2001-08-01

    UCLA is in the process of building a new acute-care hospital due to open in 2005 with the intent to operate fully digitally. The strategic planning for this hospital is based on a set of new paradigms: wider and more efficient access to all information sources, enterprise-wide data repository, usage of thin-client technology and wide usage generic information-appliances and wireless devices allowing access to information from anywhere in the hospital. These new paradigms required significant changes from traditional information technology architecture in particular in workflow management of large quantities of imaging data.

  5. Software Architecture for Modeling and Simulation of Underwater Acoustic Information Systems

    Institute of Scientific and Technical Information of China (English)

    WANG Xi-min; CAI Zhi-ming

    2009-01-01

    The simulation of underwater acoustic information flow is an important way to research sonar performance and its engagement effectiveness in the ocean environment. This paper analyzes the significance of modeling an open and sophisticated simulation software architecture by object-oriented method, and introduces the modeling processes and expression method of simulation architecture. According to the requirements of simulation system and the underwater acoustic information flow, the logical architecture of simulation software system is modeled by the object-oriented method. A use-case view captured the system requirements. The logical view shows the logical architecture of software system. The simulation software is decomposed into the loose coupling constituent parts by layering and partitioning the packages for maintainability. The design patterns enabled the simulation software to have good expansibility and reusability. The simulation system involving multi-targets and multi-sonar is developed based on the architecture model. Practices show that the model meets the needs for simulating an open and sophisticated system.

  6. Advanced Ground Systems Maintenance Enterprise Architecture Project

    Science.gov (United States)

    Perotti, Jose M. (Compiler)

    2015-01-01

    The project implements an architecture for delivery of integrated health management capabilities for the 21st Century launch complex. The delivered capabilities include anomaly detection, fault isolation, prognostics and physics based diagnostics.

  7. A system architecture for a planetary rover

    Science.gov (United States)

    Smith, D. B.; Matijevic, J. R.

    1989-01-01

    Each planetary mission requires a complex space vehicle which integrates several functions to accomplish the mission and science objectives. A Mars Rover is one of these vehicles, and extends the normal spacecraft functionality with two additional functions: surface mobility and sample acquisition. All functions are assembled into a hierarchical and structured format to understand the complexities of interactions between functions during different mission times. It can graphically show data flow between functions, and most importantly, the necessary control flow to avoid unambiguous results. Diagrams are presented organizing the functions into a structured, block format where each block represents a major function at the system level. As such, there are six blocks representing telecomm, power, thermal, science, mobility and sampling under a supervisory block called Data Management/Executive. Each block is a simple collection of state machines arranged into a hierarchical order very close to the NASREM model for Telerobotics. Each layer within a block represents a level of control for a set of state machines that do the three primary interface functions: command, telemetry, and fault protection. This latter function is expanded to include automatic reactions to the environment as well as internal faults. Lastly, diagrams are presented that trace the system operations involved in moving from site to site after site selection. The diagrams clearly illustrate both the data and control flows. They also illustrate inter-block data transfers and a hierarchical approach to fault protection. This systems architecture can be used to determine functional requirements, interface specifications and be used as a mechanism for grouping subsystems (i.e., collecting groups of machines, or blocks consistent with good and testable implementations).

  8. Research on system architecture of modeling and simulation

    Institute of Scientific and Technical Information of China (English)

    WANG Jiangyun; WANG Xingren

    2007-01-01

    The modeling and simulation(M&S)architecture describes and defines the relationship between the difeerent parts of a simulation.The simulation system architecture and simulation support platform architecture are discussed separately.The simulation support platform architecture consists of the management layer,the resource layer,the communication layer,the application layer and the infrastructure layer.The best Wav is to design and realize the M&S collaborative environment for simulation support platform in the resource-communication-application three-dimension space.

  9. ADaPPT: Enterprise Architecture Thinking for Information Systems Development

    Directory of Open Access Journals (Sweden)

    Hanifa Shah

    2011-01-01

    Full Text Available Enterprises have architecture: whether it is visible or invisible is another matter. An enterprises' architecture determines the way in which it works to deliver its business objectives and the way in which it can change to continue to meet its evolving business objectives. Enterprise architectural thinking can facilitate effective strategic planning and information systems development. This paper reviews enterprise architecture (EA and its concepts. It briefly considers EA frameworks. It describes the ADaPPT (Aligning Data, People, Processes and Technology EA approach as a means to managing organisational complexity and change. Future research directions are discussed.

  10. Open Source, Open Standards, and Health Care Information Systems

    Science.gov (United States)

    2011-01-01

    Recognition of the improvements in patient safety, quality of patient care, and efficiency that health care information systems have the potential to bring has led to significant investment. Globally the sale of health care information systems now represents a multibillion dollar industry. As policy makers, health care professionals, and patients, we have a responsibility to maximize the return on this investment. To this end we analyze alternative licensing and software development models, as well as the role of standards. We describe how licensing affects development. We argue for the superiority of open source licensing to promote safer, more effective health care information systems. We claim that open source licensing in health care information systems is essential to rational procurement strategy. PMID:21447469

  11. Open source, open standards, and health care information systems.

    Science.gov (United States)

    Reynolds, Carl J; Wyatt, Jeremy C

    2011-02-17

    Recognition of the improvements in patient safety, quality of patient care, and efficiency that health care information systems have the potential to bring has led to significant investment. Globally the sale of health care information systems now represents a multibillion dollar industry. As policy makers, health care professionals, and patients, we have a responsibility to maximize the return on this investment. To this end we analyze alternative licensing and software development models, as well as the role of standards. We describe how licensing affects development. We argue for the superiority of open source licensing to promote safer, more effective health care information systems. We claim that open source licensing in health care information systems is essential to rational procurement strategy.

  12. Using Runtime Systems Tools to Implement Efficient Preconditioners for Heterogeneous Architectures

    Directory of Open Access Journals (Sweden)

    Roussel Adrien

    2016-11-01

    Full Text Available Solving large sparse linear systems is a time-consuming step in basin modeling or reservoir simulation. The choice of a robust preconditioner strongly impact the performance of the overall simulation. Heterogeneous architectures based on General Purpose computing on Graphic Processing Units (GPGPU or many-core architectures introduce programming challenges which can be managed in a transparent way for developer with the use of runtime systems. Nevertheless, algorithms need to be well suited for these massively parallel architectures. In this paper, we present preconditioning techniques which enable to take advantage of emerging architectures. We also present our task-based implementations through the use of the HARTS (Heterogeneous Abstract RunTime System runtime system, which aims to manage the recent architectures. We focus on two preconditoners. The first is ILU(0 preconditioner implemented on distributing memory systems. The second one is a multi-level domain decomposition method implemented on a shared-memory system. Obtained results are then presented on corresponding architectures, which open the way to discuss on the scalability of such methods according to numerical performances while keeping in mind that the next step is to propose a massively parallel implementations of these techniques.

  13. Flexible surveillance system architecture for prototyping video content analysis algorithms

    Science.gov (United States)

    Wijnhoven, R. G. J.; Jaspers, E. G. T.; de With, P. H. N.

    2006-01-01

    Many proposed video content analysis algorithms for surveillance applications are very computationally intensive, which limits the integration in a total system, running on one processing unit (e.g. PC). To build flexible prototyping systems of low cost, a distributed system with scalable processing power is therefore required. This paper discusses requirements for surveillance systems, considering two example applications. From these requirements, specifications for a prototyping architecture are derived. An implementation of the proposed architecture is presented, enabling mapping of multiple software modules onto a number of processing units (PCs). The architecture enables fast prototyping of new algorithms for complex surveillance applications without considering resource constraints.

  14. Control architecture of power systems: Modeling of purpose and function

    DEFF Research Database (Denmark)

    Heussen, Kai; Saleem, Arshad; Lind, Morten

    2009-01-01

    for semantically consistent modeling of control architecture is presented. The method, called Multilevel Flow Modeling (MFM), is applied to the case of system balancing. It was found that MFM is capable of capturing implicit control knowledge, which is otherwise difficult to formalize. The method has possible...... of power systems and it is necessary to identify requirements and functions. How does new control architecture fit with the old architecture? How can power system functions be specified independent of technology? What is the purpose of control in power systems? In this paper, a method suitable...

  15. A hierarchical architecture for an energy management system

    NARCIS (Netherlands)

    Piotrowski, Krzysztof; Casaca, Augusto; Gerards, Marco E.T.; Jongerden, Marijn; Melo, Francisco; Garrido, Daniel; Geers, Marcel; Peralta, Jacoba

    2016-01-01

    This paper introduces an innovative energy management system architecture for Smart Grids, designed in the European 7th framework program project e-balance. The architecture is hierarchical and fractal-like, which results in better scalability and reuse of algorithms and programming code for energy

  16. Automatic Water Sensor Window Opening System

    KAUST Repository

    Percher, Michael

    2013-12-05

    A system can automatically open at least one window of a vehicle when the vehicle is being submerged in water. The system can include a water collector and a water sensor, and when the water sensor detects water in the water collector, at least one window of the vehicle opens.

  17. Linear response theory for quantum open systems

    OpenAIRE

    Wei, J. H.; Yan, YiJing

    2011-01-01

    Basing on the theory of Feynman's influence functional and its hierarchical equations of motion, we develop a linear response theory for quantum open systems. Our theory provides an effective way to calculate dynamical observables of a quantum open system at its steady-state, which can be applied to various fields of non-equilibrium condensed matter physics.

  18. 78 FR 11988 - Open Video Systems

    Science.gov (United States)

    2013-02-21

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 76 Open Video Systems AGENCY: Federal Communications Commission. ACTION: Final rule... Open Video Systems. DATES: The amendments to 47 CFR 76.1505(d) and 76.1506(d), (l)(3), and (m)(2...

  19. Safety architecture of internet based multi-robot teleoperation system

    Institute of Scientific and Technical Information of China (English)

    ZHAO Jie; GAO Yong-sheng; CAI He-gao

    2005-01-01

    Safety subsystem is one of the important parts in robot teleoperation system. In this paper, a safety architecture of safety subsystem in Internet based multi-operator-multi-robot (MOMR) teleoperation system is presented. The subsystem is divided into three layers in its logic architecture: interactive monitor layer, collaborative control layer and real-time control layer. The safety problems and the related strategy are clarified by detailed analysis of each layer and relationship among the layers. So we can obtain a high performance MOMR teleoperation system with multi-layer safety architecture.

  20. Perturbative approach to Markovian open quantum systems.

    Science.gov (United States)

    Li, Andy C Y; Petruccione, F; Koch, Jens

    2014-05-08

    The exact treatment of Markovian open quantum systems, when based on numerical diagonalization of the Liouville super-operator or averaging over quantum trajectories, is severely limited by Hilbert space size. Perturbation theory, standard in the investigation of closed quantum systems, has remained much less developed for open quantum systems where a direct application to the Lindblad master equation is desirable. We present such a perturbative treatment which will be useful for an analytical understanding of open quantum systems and for numerical calculation of system observables which would otherwise be impractical.

  1. QUality Assessment of System Architectures and their Requirements (QUASAR)

    Science.gov (United States)

    2010-05-18

    2010 Carnegie Mellon University QUality Assessment of System Architectures and their Requirements ( QUASAR ) DoD and NDIA System-of-Systems...Architectures and their Requirements ( QUASAR ) 5a. CONTRACT NUMBER 5b. GRANT NUMBER 5c. PROGRAM ELEMENT NUMBER 6. AUTHOR(S) 5d. PROJECT NUMBER 5e...Prescribed by ANSI Std Z39-18 2 QUASAR Version 3.1, 1 Hour Overview Donald Firesmith, 18 May 2010 © 2010 Carnegie Mellon University Topics History

  2. An energy-efficient architecture for internet of things systems

    Science.gov (United States)

    De Rango, Floriano; Barletta, Domenico; Imbrogno, Alessandro

    2016-05-01

    In this paper some of the motivations for energy-efficient communications in wireless systems are described by highlighting emerging trends and identifying some challenges that need to be addressed to enable novel, scalable and energy-efficient communications. So an architecture for Internet of Things systems is presented, the purpose of which is to minimize energy consumption by communication devices, protocols, networks, end-user systems and data centers. Some electrical devices have been designed with multiple communication interfaces, such as RF or WiFi, using open source technology; they have been analyzed under different working conditions. Some devices are programmed to communicate directly with a web server, others to communicate only with a special device that acts as a bridge between some devices and the web server. Communication parameters and device status have been changed dynamically according to different scenarios in order to have the most benefits in terms of energy cost and battery lifetime. So the way devices communicate with the web server or between each other and the way they try to obtain the information they need to be always up to date change dynamically in order to guarantee always the lowest energy consumption, a long lasting battery lifetime, the fastest responses and feedbacks and the best quality of service and communication for end users and inner devices of the system.

  3. Designing an architectural style for Pervasive Healthcare systems.

    Science.gov (United States)

    Rafe, Vahid; Hajvali, Masoumeh

    2013-04-01

    Nowadays, the Pervasive Healthcare (PH) systems are considered as an important research area. These systems have a dynamic structure and configuration. Therefore, an appropriate method for designing such systems is necessary. The Publish/Subscribe Architecture (pub/sub) is one of the convenient architectures to support such systems. PH systems are safety critical; hence, errors can bring disastrous results. To prevent such problems, a powerful analytical tool is required. So using a proper formal language like graph transformation systems for developing of these systems seems necessary. But even if software engineers use such high level methodologies, errors may occur in the system under design. Hence, it should be investigated automatically and formally that whether this model of system satisfies all their requirements or not. In this paper, a dynamic architectural style for developing PH systems is presented. Then, the behavior of these systems is modeled and evaluated using GROOVE toolset. The results of the analysis show its high reliability.

  4. The system architecture of the Pocket Companion

    NARCIS (Netherlands)

    Havinga, Paul J.M.; Smit, Gerard J.M.

    1997-01-01

    In the Moby Dick project we design the architecture of a so-called Pocket Companion. It is a small personal portable computer with wireless communication facilities for every day use. The typical use of the Pocket Companion induces a number of requirements concerning security, performance, energy co

  5. Designing flexible engineering systems utilizing embedded architecture options

    Science.gov (United States)

    Pierce, Jeff G.

    This dissertation develops and applies an integrated framework for embedding flexibility in an engineered system architecture. Systems are constantly faced with unpredictability in the operational environment, threats from competing systems, obsolescence of technology, and general uncertainty in future system demands. Current systems engineering and risk management practices have focused almost exclusively on mitigating or preventing the negative consequences of uncertainty. This research recognizes that high uncertainty also presents an opportunity to design systems that can flexibly respond to changing requirements and capture additional value throughout the design life. There does not exist however a formalized approach to designing appropriately flexible systems. This research develops a three stage integrated flexibility framework based on the concept of architecture options embedded in the system design. Stage One defines an eight step systems engineering process to identify candidate architecture options. This process encapsulates the operational uncertainty though scenario development, traces new functional requirements to the affected design variables, and clusters the variables most sensitive to change. The resulting clusters can generate insight into the most promising regions in the architecture to embed flexibility in the form of architecture options. Stage Two develops a quantitative option valuation technique, grounded in real options theory, which is able to value embedded architecture options that exhibit variable expiration behavior. Stage Three proposes a portfolio optimization algorithm, for both discrete and continuous options, to select the optimal subset of architecture options, subject to budget and risk constraints. Finally, the feasibility, extensibility and limitations of the framework are assessed by its application to a reconnaissance satellite system development problem. Detailed technical data, performance models, and cost estimates

  6. Modular Architecture for the Deep Space Habitat Instrumentation System Project

    Data.gov (United States)

    National Aeronautics and Space Administration — This project is focused on developing a continually evolving modular backbone architecture for the Deep Space Habitat (DSH) instrumentation system by integrating new...

  7. Space Telecommunications Radio System (STRS) Architecture. Part 1; Tutorial - Overview

    Science.gov (United States)

    Handler, Louis M.; Briones, Janette C.; Mortensen, Dale J.; Reinhart, Richard C.

    2012-01-01

    Space Telecommunications Radio System (STRS) Architecture Standard provides a NASA standard for software-defined radio. STRS is being demonstrated in the Space Communications and Navigation (SCaN) Testbed formerly known as Communications, Navigation and Networking Configurable Testbed (CoNNeCT). Ground station radios communicating the SCaN testbed are also being written to comply with the STRS architecture. The STRS Architecture Tutorial Overview presents a general introduction to the STRS architecture standard developed at the NASA Glenn Research Center (GRC), addresses frequently asked questions, and clarifies methods of implementing the standard. The STRS architecture should be used as a base for many of NASA s future telecommunications technologies. The presentation will provide a basic understanding of STRS.

  8. ARCHITECTURE SOFTWARE SOLUTION TO SUPPORT AND DOCUMENT MANAGEMENT QUALITY SYSTEM

    Directory of Open Access Journals (Sweden)

    Milan Eric

    2010-12-01

    Full Text Available One of the basis of a series of standards JUS ISO 9000 is quality system documentation. An architecture of the quality system documentation depends on the complexity of business system. An establishment of an efficient management documentation of system of quality is of a great importance for the business system, as well as in the phase of introducing the quality system and in further stages of its improvement. The study describes the architecture and capability of software solutions to support and manage the quality system documentation in accordance with the requirements of standards ISO 9001:2001, ISO 14001:2005 HACCP etc.

  9. Integrated Software Architecture-Based Reliability Prediction for IT Systems

    OpenAIRE

    Brosch, Franz

    2012-01-01

    With the increasing importance of reliability in business and industrial IT systems, new techniques for architecture-based software reliability prediction are becoming an integral part of the development process. This dissertation thesis introduces a novel reliability modelling and prediction technique that considers the software architecture with its component structure, control and data flow, recovery mechanisms, its deployment to distributed hardware resources and the system´s usage p...

  10. Future of Open Source systems

    Directory of Open Access Journals (Sweden)

    Karel Charvát

    2010-02-01

    Full Text Available Software distribution strategies have many aspects and can be analysed by reviewing different incisions of a strategy. The focus of this paper is on Licensing aspect involves licensing strategy, licensing risks, licensing enforcement costs. Furthermore, by formulating licensing strategy main technical and logistical aspects are predicted also. The key issues of this paper are different business modes for FOSS software and also SWOT analysis of usage and development of FOSS software from point of view of different user groups. This analysis was provided as part of work of Humboldt IP and collaborative@rural IP. Currently this strategy are important issue of members of Czech Centre for Science and Society and WirelessInfo Living Lab, where the models based on dual licensing are key strategy.Keywords: Open Source, Licensing, FOSS base business models. SWOT analysis, Knowledge society, Knowledge economy

  11. DESIGNING AN INTEGRATED OPEN INNOVATION SYSTEM: TOWARDS ORGANIZATIONAL WHOLENESS

    DEFF Research Database (Denmark)

    Baka, Vasiliki

    2014-01-01

    Increasing use of collaborative technologies has transformed organizational dynamics in novel ways. In this paper, we adopt the principle of wholeness in designing an integrated open innovation system. We provide an overview of existing collaborative technologies and situate the proposed sociotec......Increasing use of collaborative technologies has transformed organizational dynamics in novel ways. In this paper, we adopt the principle of wholeness in designing an integrated open innovation system. We provide an overview of existing collaborative technologies and situate the proposed...... that in embracing wholeness and in treating technologies as inseparable constitutive parts of organizational architecture, we foster organizational and institutional collaboration and encourage innovative practices. The focus of the paper is on how the design of sociotechnical systems as wholes, that is systems...... that are concurrently acting as corporate websites, internal collaboration spaces, extranets and social media aggregators, actively promotes open innovation in practice. We close with a presentation of six cases that are illustrative of how such a system could be applicable within the open innovation paradigm, namely...

  12. Basic building units, self-assembly and crystallization in the formation of complex inorganic open architectures

    Indian Academy of Sciences (India)

    C N R Rao

    2001-10-01

    Careful investigations of open-framework metal phosphates reveal that the formation of these complex architectures is likely to involve a process wherein one-dimensional ladders or chains, and possibly zero-dimens ional monomers, transform to higher dimensional structures. The one-dimensional ladder appears to be the primary building unit of these structures. At one stage of the building-up process, spontaneous self-assembly of a low-dimensional structure such as the ladder seems to occur, followed by crys tallization of a two- or three-dimensional structure. Accordingly, many of the higher dimensional structures retain the structural features of the 1D structure, indicating the occurrence of self-assembly. These findings mark the beginnings of our understan ding of complex supramolecular inorganic materials.

  13. Open Marriage: Implications for Human Service Systems

    Science.gov (United States)

    O'Neill, Nena; O'Neill, George

    1973-01-01

    The authors of Open Marriage reiterate the meaning and possibilities of the open marriage concept and advance suggestions for change in the areas of residence, work, child care, and educational patterns. Human service systems must search out the universal values to be maintained in all human relationships. (Editor)

  14. An open and flexible interface proposal and proof of concept implementation to support service orientated architectures and interoperability in the tactical environment

    Science.gov (United States)

    Peach, Nicholas

    2012-06-01

    The development of SOAs in the tactical domain has been hindered by a lack of interface standards suitable for the environment of unpredictable and low bandwidth communications, low powered computers and dynamic ad-hoc grouping of tactical participants. Existing commercial SOA standards have assumed reliable access to central servers and services and having relatively static participants. The proposal describes an open and published message-oriented interface created to support the aims of the upcoming MOD Generic Base Architecture1 (GBA) Defence Standard and the associated Land Open Systems Architecture2. The aims are; a) to support multiple open transport protocols, such as HTTP, SMTP, DDS and MQTT; b) to be suitable for integrating together low-level utility functions with their controlling systems (such as water, waste and power) and integrating together high-level mission-support functions (such as ISTAR and C2); c) reduce operator burden by using automated discovery and configuration where possible; d) dynamically integrate with MOD Generic Vehicle Architecture3 platforms to link base and vehicle mission and logistics systems over tactical radio links; e) extensible to support features such as security classification; f) to be lightweight in implementation and bandwidth and not dependent on central servers for operation. The paper will present the proposed interface and describe the features required for a military tactical rather than a commercial environment, and will report the outcome of a MOD-funded proof of concept that uses the proposed interface to interoperate several military systems.

  15. The Hygroscopic Opening of Sesame Fruits Is Induced by a Functionally Graded Pericarp Architecture

    Science.gov (United States)

    Shtein, Ilana; Elbaum, Rivka; Bar-On, Benny

    2016-01-01

    To enhance the distribution of their seeds, plants often utilize hygroscopic deformations that actuate dispersal mechanisms. Such movements are based on desiccation-induced shrinkage of tissues in predefined directions. The basic hygroscopic deformations are typically actuated by a bi-layer configuration, in which shrinking of an active tissue layer is resisted by a stiff layer, generating a set of basic movements including bending, coiling, and twisting. In this study, we investigate a new type of functionally graded hygroscopic movement in the fruit (capsule) of sesame (Sesamum indicum L.). Microscopic observations of the capsules showed that the inner stiff endocarp layer is built of a bilayer of transverse (i.e., circumferential) and longitudinal fiber cells with the layers positioned in a semi-circle, one inside the other. The outer mesocarp layer is made of soft parenchyma cells. The thickness of the fibrous layers and of the mesocarp exhibits a graded architecture, with gradual changes in their thickness around the capsule circumference. The cellulose microfibrils in the fiber cell walls are lying parallel to the cell long axis, rendering them stiff. The outer mesocarp layer contracted by 300% as it dried. Removal of this outer layer inhibited the opening movement, indicating that it is the active tissue. A biomechanical hygro-elastic model based on the relative thicknesses of the layers successfully simulated the opening curvature. Our findings suggest that the sesame capsules possess a functionally graded architecture, which promotes a non-uniform double-curvature hygroscopic bending movement. In contrast to other hygroscopic organs described in the literature, the sesame capsule actuating and resisting tissues are not uniform throughout the device, but changing gradually. This newly described mechanism can be exploited in bio-inspired designs of novel actuating platforms. PMID:27777579

  16. Study on Network Security Architecture for Power Systems

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    The wide application of network technology in power systems brings not only convenience and flexibility but also security threats. An architecture of network security for power system was proposed in this study,which protected data and facilities from being attacked by outside users by means of firewall, security monitor and control system. Firewall was basically the first line of defense for the intranet; the security monitoring system was a kind of IDS (Intrusion Detection System), while security control system provided authentication, authorization,data-encrypted transmission and security management. This architecture provides various security services, such as identification, authentication, authorization, data integrity and confidentiality.

  17. Architecture Research of Non-Stop Computer System

    Institute of Scientific and Technical Information of China (English)

    LIUXinsong; QIUYuanjie; YANGFeng; YANGongjun; GUPan; GAOKe

    2004-01-01

    Distributed & parallel server system with distributed & parallel I/O interface has solved the bottleneck between server system and client system, and also has solved the rebuilding problem after system fault. However, the system still has some shortcomings: the switch is the system bottleneck and the system is not adapted to WAN (Wide area network). Therefore, we put forward a new system architecture to overcome these shortcomings and develop the non-stop computer system. The basis of a non-stop system is rebuilt after system fault. The inner architecture of non-stop system must be redundant and the redundancy is the system fault-tolerance redundancy based on distributed mechanism and not backupredundancy. Analysis and test results declare that the system rebuild time after fault is in second scale and its rebuild capability is so strong that the system can be nonstop in the system's lifetime.

  18. Architecture Governance: The Importance of Architecture Governance for Achieving Operationally Responsive Ground Systems

    Science.gov (United States)

    Kolar, Mike; Estefan, Jeff; Giovannoni, Brian; Barkley, Erik

    2011-01-01

    Topics covered (1) Why Governance and Why Now? (2) Characteristics of Architecture Governance (3) Strategic Elements (3a) Architectural Principles (3b) Architecture Board (3c) Architecture Compliance (4) Architecture Governance Infusion Process. Governance is concerned with decision making (i.e., setting directions, establishing standards and principles, and prioritizing investments). Architecture governance is the practice and orientation by which enterprise architectures and other architectures are managed and controlled at an enterprise-wide level

  19. Architecture Governance: The Importance of Architecture Governance for Achieving Operationally Responsive Ground Systems

    Science.gov (United States)

    Kolar, Mike; Estefan, Jeff; Giovannoni, Brian; Barkley, Erik

    2011-01-01

    Topics covered (1) Why Governance and Why Now? (2) Characteristics of Architecture Governance (3) Strategic Elements (3a) Architectural Principles (3b) Architecture Board (3c) Architecture Compliance (4) Architecture Governance Infusion Process. Governance is concerned with decision making (i.e., setting directions, establishing standards and principles, and prioritizing investments). Architecture governance is the practice and orientation by which enterprise architectures and other architectures are managed and controlled at an enterprise-wide level

  20. Making sense of mobile health data: an open architecture to improve individual- and population-level health.

    Science.gov (United States)

    Chen, Connie; Haddad, David; Selsky, Joshua; Hoffman, Julia E; Kravitz, Richard L; Estrin, Deborah E; Sim, Ida

    2012-08-09

    Mobile phones and devices, with their constant presence, data connectivity, and multiple intrinsic sensors, can support around-the-clock chronic disease prevention and management that is integrated with daily life. These mobile health (mHealth) devices can produce tremendous amounts of location-rich, real-time, high-frequency data. Unfortunately, these data are often full of bias, noise, variability, and gaps. Robust tools and techniques have not yet been developed to make mHealth data more meaningful to patients and clinicians. To be most useful, health data should be sharable across multiple mHealth applications and connected to electronic health records. The lack of data sharing and dearth of tools and techniques for making sense of health data are critical bottlenecks limiting the impact of mHealth to improve health outcomes. We describe Open mHealth, a nonprofit organization that is building an open software architecture to address these data sharing and "sense-making" bottlenecks. Our architecture consists of open source software modules with well-defined interfaces using a minimal set of common metadata. An initial set of modules, called InfoVis, has been developed for data analysis and visualization. A second set of modules, our Personal Evidence Architecture, will support scientific inferences from mHealth data. These Personal Evidence Architecture modules will include standardized, validated clinical measures to support novel evaluation methods, such as n-of-1 studies. All of Open mHealth's modules are designed to be reusable across multiple applications, disease conditions, and user populations to maximize impact and flexibility. We are also building an open community of developers and health innovators, modeled after the open approach taken in the initial growth of the Internet, to foster meaningful cross-disciplinary collaboration around new tools and techniques. An open mHealth community and architecture will catalyze increased mHealth efficiency

  1. Closed suction system versus open suction

    National Research Council Canada - National Science Library

    Elmansoury, Ahmed; Said, Hedya

    Background: Catheter suction is used to remove tracheal secretions through the endotracheal tube in mechanically ventilated patients, which may be either closed tracheal suction system (CTSS) or open one...

  2. Open System of Agile Ground Stations Project

    Data.gov (United States)

    National Aeronautics and Space Administration — There is an opportunity to build the HETE-2/TESS network of ground stations into an innovative and powerful Open System of Agile Stations, by developing a low-cost...

  3. Designing a Multi Agent System Architecture for IT Governance Platform

    Directory of Open Access Journals (Sweden)

    S. ELHASNAOUI

    2014-06-01

    Full Text Available This paper presents a multi-agents architecture which facilitates the integration of three major IT governance frameworks: COBIT5, ITIL V3 and ISO/IEC27002, to optimize the construction of a distributed system. This architecture proposes a new and easier method to develop a distributed multi agents system, where agents involved in this system can communicate in a distributed way thanks to functionalities offered by the system. It gives finally an overview of implementation of a prototype of the proposed solution limited for the moment to integration of processes most used in the majority of information systems.

  4. Architecture Optimization of More Electric Aircraft Actuation System

    Institute of Scientific and Technical Information of China (English)

    QI Haitao; FU Yongling; QI Xiaoye; LANG Yan

    2011-01-01

    The optional types of power source and actuator in the aircraft are more and more diverse due to fast development in more electric technology,which makes the combinations of different power sources and actuators become extremely complex in the architecture optimization process of airborne actuation system.The traditional “trial and error” method cannot satisfy the design demands.In this paper,firstly,the composition of more electric aircraft(MEA) flight control actuation system(FCAS) is introduced,and the possible architecture quantity is calculated.Secondly,the evaluation criteria of FCAS architecture with respect to safe reliability,weight and efficiency are proposed,and the evaluation criteria values are calculated in the case that each control surface adopts the same actuator configuration.Finally,the optimization results of MEA FCAS architecture are obtained by applying genetic algorithm(GA).Compared to the traditional actuation system architecture,which only adopts servo valve controlled hydraulic actuators,the weight of the optimized more electric actuation system architecture can be reduced by 6%,and the efficiency can be improved by 30% based on the safe reliability requirements.

  5. THE ARCHITECTURE OF THE REMOTE CONTROL SYSTEM OF ROBOTICS OBJECTS

    Directory of Open Access Journals (Sweden)

    S.V. Shavetov

    2014-03-01

    Full Text Available The paper deals with the architecture for the universal remote control system of robotics objects over the Internet global network. Control objects are assumed to be located at a considerable distance from a reference device or end-users. An overview of studies on the subject matter of remote control of technical objects is given. A structure chart of the architecture demonstrating the system usage in practice is suggested. Server software is considered that makes it possible to work with technical objects connected to the server as with a serial port and organize a stable tunnel connection between the controlled object and the end-user. The proposed architecture has been successfully tested on mobile robots Parallax Boe-Bot and Lego Mindstorms NXT. Experimental data about values of time delays are given demonstrating the effectiveness of the considered architecture.

  6. Imaging radars: System architectures and technologies

    Energy Technology Data Exchange (ETDEWEB)

    Torre, Andrea [Thales Alenia Space Italia S.p.A., Via Saccomuro 24, 00131 Roma (Italy); Angino, Giuseppe, E-mail: giuseppe.angino@thalesaleniaspace.com [Thales Alenia Space Italia S.p.A., Via Saccomuro 24, 00131 Roma (Italy)

    2013-08-21

    The potentiality of multichannel SAR to provide wide swath and high resolution at the same time has been described in many papers in the last past years. The scope of this paper is to address some of the architectural and technological aspects related to the implementation of a multichannel receiver for a multibeam SAR, with the objective to provide some solutions for different configurations with increased complexity. A further point is the exploitation of the multichannel configuration for the implementation of very high resolution modes.

  7. Architectural transformations in network services and distributed systems

    CERN Document Server

    Luntovskyy, Andriy

    2017-01-01

    With the given work we decided to help not only the readers but ourselves, as the professionals who actively involved in the networking branch, with understanding the trends that have developed in recent two decades in distributed systems and networks. Important architecture transformations of distributed systems have been examined. The examples of new architectural solutions are discussed. Content Periodization of service development Energy efficiency Architectural transformations in Distributed Systems Clustering and Parallel Computing, performance models Cloud Computing, RAICs, Virtualization, SDN Smart Grid, Internet of Things, Fog Computing Mobile Communication from LTE to 5G, DIDO, SAT-based systems Data Security Guaranteeing Distributed Systems Target Groups Students in EE and IT of universities and (dual) technical high schools Graduated engineers as well as teaching staff About the Authors Andriy Luntovskyy provides classes on networks, mobile communication, software technology, distributed systems, ...

  8. The Double-System Architecture for Trusted OS

    Science.gov (United States)

    Zhao, Yong; Li, Yu; Zhan, Jing

    With the development of computer science and technology, current secure operating systems failed to respond to many new security challenges. Trusted operating system (TOS) is proposed to try to solve these problems. However, there are no mature, unified architectures for the TOS yet, since most of them cannot make clear of the relationship between security mechanism and the trusted mechanism. Therefore, this paper proposes a double-system architecture (DSA) for the TOS to solve the problem. The DSA is composed of the Trusted System (TS) and the Security System (SS). We constructed the TS by establishing a trusted environment and realized related SS. Furthermore, we proposed the Trusted Information Channel (TIC) to protect the information flow between TS and SS. In a word, the double system architecture we proposed can provide reliable protection for the OS through the SS with the supports provided by the TS.

  9. Another interpretation of stigmergy for product-driven systems architecture

    OpenAIRE

    Pannequin, Rémi; Thomas, André

    2012-01-01

    International audience; Product-driven systems (PDS) may enable manufacturing companies to meet business demands more quickly and effectively, by localizing decision as near as possible to the material flows. However, the actual architecture of a PDS is still not well defined. This paper proposes a PDS architecture based on a particular interpretation of the concept of stigmergy, where cooperation between production actors is achieved thanks to attributes (informational pheromones) attached t...

  10. Scattering theory for open quantum systems

    Energy Technology Data Exchange (ETDEWEB)

    Behrndt, Jussi [Technische Univ. Berlin (Germany). Inst. fuer Mathematik; Malamud, Mark M. [Donetsk National University (Ukraine). Dept. of Mathematics; Neidhardt, Hagen [Weierstrass-Institut fuer Angewandte Analysis und Stochastik (WIAS) im Forschungsverbund Berlin e.V. (Germany)

    2006-07-01

    Quantum systems which interact with their environment are often modeled by maximal dissipative operators or so-called Pseudo-Hamiltonians. In this paper the scattering theory for such open systems is considered. First it is assumed that a single maximal dissipative operator A{sub D} in a Hilbert space H is used to describe an open quantum system. In this case the minimal self-adjoint dilation K of A{sub D} can be regarded as the Hamiltonian of a closed system which contains the open system {l_brace}A{sub D},h{r_brace}, but since K is necessarily not semibounded from below, this model is difficult to interpret from a physical point of view. In the second part of the paper an open quantum system is modeled with a family {l_brace}A({mu}){r_brace} of maximal dissipative operators depending on energy {mu}, and it is shown that the open system can be embedded into a closed system where the Hamiltonian is semibounded. Surprisingly it turns out that the corresponding scattering matrix can be completely recovered from scattering matrices of single Pseudo-Hamiltonians as in the first part of the paper. The general results are applied to a class of Sturm-Liouville operators arising in dissipative and quantum transmitting Schroedinger-Poisson systems. (orig.)

  11. Key Technology Research on Open Architecture for The Sharing of Heterogeneous Geographic Analysis Models

    Science.gov (United States)

    Yue, S. S.; Wen, Y. N.; Lv, G. N.; Hu, D.

    2013-10-01

    In recent years, the increasing development of cloud computing technologies laid critical foundation for efficiently solving complicated geographic issues. However, it is still difficult to realize the cooperative operation of massive heterogeneous geographical models. Traditional cloud architecture is apt to provide centralized solution to end users, while all the required resources are often offered by large enterprises or special agencies. Thus, it's a closed framework from the perspective of resource utilization. Solving comprehensive geographic issues requires integrating multifarious heterogeneous geographical models and data. In this case, an open computing platform is in need, with which the model owners can package and deploy their models into cloud conveniently, while model users can search, access and utilize those models with cloud facility. Based on this concept, the open cloud service strategies for the sharing of heterogeneous geographic analysis models is studied in this article. The key technology: unified cloud interface strategy, sharing platform based on cloud service, and computing platform based on cloud service are discussed in detail, and related experiments are conducted for further verification.

  12. Integrating hospital information systems in healthcare institutions: a mediation architecture.

    Science.gov (United States)

    El Azami, Ikram; Cherkaoui Malki, Mohammed Ouçamah; Tahon, Christian

    2012-10-01

    Many studies have examined the integration of information systems into healthcare institutions, leading to several standards in the healthcare domain (CORBAmed: Common Object Request Broker Architecture in Medicine; HL7: Health Level Seven International; DICOM: Digital Imaging and Communications in Medicine; and IHE: Integrating the Healthcare Enterprise). Due to the existence of a wide diversity of heterogeneous systems, three essential factors are necessary to fully integrate a system: data, functions and workflow. However, most of the previous studies have dealt with only one or two of these factors and this makes the system integration unsatisfactory. In this paper, we propose a flexible, scalable architecture for Hospital Information Systems (HIS). Our main purpose is to provide a practical solution to insure HIS interoperability so that healthcare institutions can communicate without being obliged to change their local information systems and without altering the tasks of the healthcare professionals. Our architecture is a mediation architecture with 3 levels: 1) a database level, 2) a middleware level and 3) a user interface level. The mediation is based on two central components: the Mediator and the Adapter. Using the XML format allows us to establish a structured, secured exchange of healthcare data. The notion of medical ontology is introduced to solve semantic conflicts and to unify the language used for the exchange. Our mediation architecture provides an effective, promising model that promotes the integration of hospital information systems that are autonomous, heterogeneous, semantically interoperable and platform-independent.

  13. A software architecture for multi-cellular system simulations on graphics processing units.

    Science.gov (United States)

    Jeannin-Girardon, Anne; Ballet, Pascal; Rodin, Vincent

    2013-09-01

    The first aim of simulation in virtual environment is to help biologists to have a better understanding of the simulated system. The cost of such simulation is significantly reduced compared to that of in vivo simulation. However, the inherent complexity of biological system makes it hard to simulate these systems on non-parallel architectures: models might be made of sub-models and take several scales into account; the number of simulated entities may be quite large. Today, graphics cards are used for general purpose computing which has been made easier thanks to frameworks like CUDA or OpenCL. Parallelization of models may however not be easy: parallel computer programing skills are often required; several hardware architectures may be used to execute models. In this paper, we present the software architecture we built in order to implement various models able to simulate multi-cellular system. This architecture is modular and it implements data structures adapted for graphics processing units architectures. It allows efficient simulation of biological mechanisms.

  14. System design in an evolving system-of-systems architecture and concept of operations

    Science.gov (United States)

    Rovekamp, Roger N., Jr.

    Proposals for space exploration architectures have increased in complexity and scope. Constituent systems (e.g., rovers, habitats, in-situ resource utilization facilities, transfer vehicles, etc) must meet the needs of these architectures by performing in multiple operational environments and across multiple phases of the architecture's evolution. This thesis proposes an approach for using system-of-systems engineering principles in conjunction with system design methods (e.g., Multi-objective optimization, genetic algorithms, etc) to create system design options that perform effectively at both the system and system-of-systems levels, across multiple concepts of operations, and over multiple architectural phases. The framework is presented by way of an application problem that investigates the design of power systems within a power sharing architecture for use in a human Lunar Surface Exploration Campaign. A computer model has been developed that uses candidate power grid distribution solutions for a notional lunar base. The agent-based model utilizes virtual control agents to manage the interactions of various exploration and infrastructure agents. The philosophy behind the model is based both on lunar power supply strategies proposed in literature, as well as on the author's own approaches for power distribution strategies of future lunar bases. In addition to proposing a framework for system design, further implications of system-of-systems engineering principles are briefly explored, specifically as they relate to producing more robust cross-cultural system-of-systems architecture solutions.

  15. The Rutgers Workflow Management System: Migrating a Digital Object Management Utility to Open Source

    Directory of Open Access Journals (Sweden)

    Grace Agnew

    2007-12-01

    Full Text Available This article examines the development, architecture, and future plans for the Workflow Management System, software developed by Rutgers University Libraries (RUL to create and catalog digital objects for repository ingest and access. The Workflow Management System (WMS was created as a front-end utility for the Fedora open source repository platform and a vehicle for a flexible, extensible metadata architecture, to serve the information needs of a large university and its collaborators. The next phase of development for the WMS shifted to a re-engineering of the WMS as an open source application. This paper discusses the design and architecture of the WMS, its re-engineering for open source release, remaining issues to be addressed before application release, and future development plans for the WMS.

  16. Development of a Conceptual Structure for Architectural Solar Energy Systems.

    Science.gov (United States)

    Ringel, Robert F.

    Solar subsystems and components were identified and conceptual structure was developed for architectural solar energy heating and cooling systems. Recent literature related to solar energy systems was reviewed and analyzed. Solar heating and cooling system, subsystem, and component data were compared for agreement and completeness. Significant…

  17. A new flight control and management system architecture and configuration

    Science.gov (United States)

    Kong, Fan-e.; Chen, Zongji

    2006-11-01

    The advanced fighter should possess the performance such as super-sound cruising, stealth, agility, STOVL(Short Take-Off Vertical Landing),powerful communication and information processing. For this purpose, it is not enough only to improve the aerodynamic and propulsion system. More importantly, it is necessary to enhance the control system. A complete flight control system provides not only autopilot, auto-throttle and control augmentation, but also the given mission management. F-22 and JSF possess considerably outstanding flight control system on the basis of pave pillar and pave pace avionics architecture. But their control architecture is not enough integrated. The main purpose of this paper is to build a novel fighter control system architecture. The control system constructed on this architecture should be enough integrated, inexpensive, fault-tolerant, high safe, reliable and effective. And it will take charge of both the flight control and mission management. Starting from this purpose, this paper finishes the work as follows: First, based on the human nervous control, a three-leveled hierarchical control architecture is proposed. At the top of the architecture, decision level is in charge of decision-making works. In the middle, organization & coordination level will schedule resources, monitor the states of the fighter and switch the control modes etc. And the bottom is execution level which holds the concrete drive and measurement; then, according to their function and resources all the tasks involving flight control and mission management are sorted to individual level; at last, in order to validate the three-leveled architecture, a physical configuration is also showed. The configuration is distributed and applies some new advancement in information technology industry such line replaced module and cluster technology.

  18. A Geo-Distributed System Architecture for Different Domains

    Science.gov (United States)

    Moßgraber, Jürgen; Middleton, Stuart; Tao, Ran

    2013-04-01

    The presentation will describe work on the system-of-systems (SoS) architecture that is being developed in the EU FP7 project TRIDEC on "Collaborative, Complex and Critical Decision-Support in Evolving Crises". In this project we deal with two use-cases: Natural Crisis Management (e.g. Tsunami Early Warning) and Industrial Subsurface Development (e.g. drilling for oil). These use-cases seem to be quite different at first sight but share a lot of similarities, like managing and looking up available sensors, extracting data from them and annotate it semantically, intelligently manage the data (big data problem), run mathematical analysis algorithms on the data and finally provide decision support on this basis. The main challenge was to create a generic architecture which fits both use-cases. The requirements to the architecture are manifold and the whole spectrum of a modern, geo-distributed and collaborative system comes into play. Obviously, one cannot expect to tackle these challenges adequately with a monolithic system or with a single technology. Therefore, a system architecture providing the blueprints to implement the system-of-systems approach has to combine multiple technologies and architectural styles. The most important architectural challenges we needed to address are 1. Build a scalable communication layer for a System-of-sytems 2. Build a resilient communication layer for a System-of-sytems 3. Efficiently publish large volumes of semantically rich sensor data 4. Scalable and high performance storage of large distributed datasets 5. Handling federated multi-domain heterogeneous data 6. Discovery of resources in a geo-distributed SoS 7. Coordination of work between geo-distributed systems The design decisions made for each of them will be presented. These developed concepts are also applicable to the requirements of the Future Internet (FI) and Internet of Things (IoT) which will provide services like smart grids, smart metering, logistics and

  19. Entropy of Open Lattice Systems

    Science.gov (United States)

    Derrida, B.; Lebowitz, J. L.; Speer, E. R.

    2007-03-01

    We investigate the behavior of the Gibbs-Shannon entropy of the stationary nonequilibrium measure describing a one-dimensional lattice gas, of L sites, with symmetric exclusion dynamics and in contact with particle reservoirs at different densities. In the hydrodynamic scaling limit, L → ∞, the leading order ( O( L)) behavior of this entropy has been shown by Bahadoran to be that of a product measure corresponding to strict local equilibrium; we compute the first correction, which is O(1). The computation uses a formal expansion of the entropy in terms of truncated correlation functions; for this system the k th such correlation is shown to be O( L - k+1). This entropy correction depends only on the scaled truncated pair correlation, which describes the covariance of the density field. It coincides, in the large L limit, with the corresponding correction obtained from a Gaussian measure with the same covariance.

  20. HyperForest: A high performance multi-processor architecture for real-time intelligent systems

    Energy Technology Data Exchange (ETDEWEB)

    Garcia, P. Jr.; Rebeil, J.P. [Sandia National Labs., Albuquerque, NM (United States); Pollard, H. [Univ. of New Mexico, Albuquerque, NM (United States). Electrical Engineering and Computer Engineering Dept.

    1997-04-01

    Intelligent Systems are characterized by the intensive use of computer power. The computer revolution of the last few years is what has made possible the development of the first generation of Intelligent Systems. Software for second generation Intelligent Systems will be more complex and will require more powerful computing engines in order to meet real-time constraints imposed by new robots, sensors, and applications. A multiprocessor architecture was developed that merges the advantages of message-passing and shared-memory structures: expendability and real-time compliance. The HyperForest architecture will provide an expandable real-time computing platform for computationally intensive Intelligent Systems and open the doors for the application of these systems to more complex tasks in environmental restoration and cleanup projects, flexible manufacturing systems, and DOE`s own production and disassembly activities.

  1. Real-time control open systems of five DOF nanomanipulators

    Science.gov (United States)

    Vladareanu, Luige; Vasile, Alexandru

    2010-11-01

    The main paper presents studies and research concerning the development of new open architectures for real-time control of a 5 degrees of freedom platform with 4 nano-manipulators, based on multiprocessor systems operating in a cooperation regime in order to achieve experiments in the 4 research domains: robotics, vibro-acustica, tribology, carbon nano tubes (CNTs ). In order to obtain this performance a positioning method with high precision at high speed is developed through reducing and compensating the induced dynamic vibrations by the system movement using the inverse dynamics method. The system's performance will allow the introduction of new functions without significant change to the hardware system. Through determining the optimal trajectory using a quadratic cost function for reducing tracking errors results increased motion speed and micro or nanometric positioning precision.

  2. A compact, coherent light source system architecture

    Science.gov (United States)

    Biedron, S. G.; Dattoli, G.; DiPalma, E.; Einstein, J.; Milton, S. V.; Petrillo, V.; Rau, J. V.; Sabia, E.; Spassovsky, I. P.; van der Slot, P. J. M.

    2016-09-01

    Our team has been examining several architectures for short-wavelength, coherent light sources. We are presently exploring the use and role of advanced, high-peak power lasers for both accelerating the electrons and generating a compact light source with the same laser. Our overall goal is to devise light sources that are more accessible by industry and in smaller laboratory settings. Although we cannot and do not want to compete directly with sources such as third-generation light sources or that of national-laboratory-based free-electron lasers, we have several interesting schemes that could bring useful and more coherent, short-wavelength light source to more researchers. Here, we present and discuss several results of recent simulations and our future steps for such dissemination.

  3. Architecture and life support systems for a rotating space habitat

    Science.gov (United States)

    Misra, Gaurav

    Life Support Systems are critical to sustain human habitation of space over long time periods. As orbiting space habitats become operational in the future, support systems such as atmo-sphere, food, water etc. will play a very pivotal role in sustaining life. To design a long-duration space habitat, it's important to consider the full gamut of human experience of the environment. Long-term viability depends on much more than just the structural or life support efficiency. A space habitat isn't just a machine; it's a life experience. To be viable, it needs to keep the inhabitants satisfied with their condition. This paper provides conceptual research on several key factors that influence the growth and sustainability of humans in a space habitat. Apart from the main life support system parameters, the architecture (both interior and exterior) of the habitat will play a crucial role in influencing the liveability in the space habitat. In order to ensure the best possible liveability for the inhabitants, a truncated (half cut) torus is proposed as the shape of the habitat. This structure rotating at an optimum rpm will en-sure 1g pseudo gravity to the inhabitants. The truncated torus design has several advantages over other proposed shapes such as a cylinder or a sphere. The design provides minimal grav-ity variation (delta g) in the living area, since its flat outer pole ensures a constant gravity. The design is superior in economy of structural and atmospheric mass. Interior architecture of the habitat addresses the total built environment, drawing from diverse disciplines includ-ing physiology, psychology, and sociology. Furthermore, factors such as line of sight, natural sunlight and overhead clearance have been discussed in the interior architecture. Substantial radiation shielding is also required in order to prevent harmful cosmic radiations and solar flares from causing damage to inhabitants. Regolith shielding of 10 tons per meter square is proposed for the

  4. Research on Architecture of Enterprise Modeling in Workflow System

    Institute of Scientific and Technical Information of China (English)

    李伟平; 齐慧彬; 薛劲松; 朱云龙

    2002-01-01

    The market that an enterprise is faced is changing and can 't be forecastedaccurately in this information time. In order to find the chances in the marketpractitioners have focused on business processes through their re-engineeringprogramme to improve enterprise efficiency. It is necessary to manage an enterpriseusing process-based method for the requirement of enhancing work efficiency and theability of competition in the market. And information system developers haveemphasized the use of standard models to accelerate the speed of configuration andimplementation of integrated systems for enterprises. So we have to model anenterprise with process-based modeling method. An architecture of enterprise modelingis presented in this paper. This architecture is composed of four views and supportingthe whole lifecycle of enterprise model. Because workflow management system is basedon process definition, this architecture can be directly used in the workflowmanagement system. The implement method of this model was thoroughly describedmeanwhile the workflow management software supporting the building and running themodel was also given.

  5. Technology System Architecture for Web–Based Education

    Directory of Open Access Journals (Sweden)

    A. Canales–Cruz

    2009-04-01

    Full Text Available In this paper a new architecture for development of Web–Based Education systems is presented. The se systems are centered in the learner and adapted to their personals needs in intelligent form. The architecture is based on the IEEE 1484 LTSA (Learning Technology System Architecture specification and it assembles to software development and instructional design patterns. On the one hand, the software development pattern is supported under a Multi–Agents System, it employs the methods and technical of the Domain Engineering for development of IRLCOO (Intelligent Reusable Learning Components Object Oriented. IRLCOO are a special type of Sharable Content Object according to SCORM (Sharable Content Object Reusable Model. On the other hand, the instructional design pattern incorporates a mental model as the Conceptual Maps to transmit, build and generate appropriate knowledge to this educational environment type.

  6. Quantum Simulation for Open-System Dynamics

    Science.gov (United States)

    Wang, Dong-Sheng; de Oliveira, Marcos Cesar; Berry, Dominic; Sanders, Barry

    2013-03-01

    Simulations are essential for predicting and explaining properties of physical and mathematical systems yet so far have been restricted to classical and closed quantum systems. Although forays have been made into open-system quantum simulation, the strict algorithmic aspect has not been explored yet is necessary to account fully for resource consumption to deliver bounded-error answers to computational questions. An open-system quantum simulator would encompass classical and closed-system simulation and also solve outstanding problems concerning, e.g. dynamical phase transitions in non-equilibrium systems, establishing long-range order via dissipation, verifying the simulatability of open-system dynamics on a quantum Turing machine. We construct an efficient autonomous algorithm for designing an efficient quantum circuit to simulate many-body open-system dynamics described by a local Hamiltonian plus decoherence due to separate baths for each particle. The execution time and number of gates for the quantum simulator both scale polynomially with the system size. DSW funded by USARO. MCO funded by AITF and Brazilian agencies CNPq and FAPESP through Instituto Nacional de Ciencia e Tecnologia-Informacao Quantica (INCT-IQ). DWB funded by ARC Future Fellowship (FT100100761). BCS funded by AITF, CIFAR, NSERC and USARO.

  7. Architecture Level Safety Analyses for Safety-Critical Systems

    Directory of Open Access Journals (Sweden)

    K. S. Kushal

    2017-01-01

    Full Text Available The dependency of complex embedded Safety-Critical Systems across Avionics and Aerospace domains on their underlying software and hardware components has gradually increased with progression in time. Such application domain systems are developed based on a complex integrated architecture, which is modular in nature. Engineering practices assured with system safety standards to manage the failure, faulty, and unsafe operational conditions are very much necessary. System safety analyses involve the analysis of complex software architecture of the system, a major aspect in leading to fatal consequences in the behaviour of Safety-Critical Systems, and provide high reliability and dependability factors during their development. In this paper, we propose an architecture fault modeling and the safety analyses approach that will aid in identifying and eliminating the design flaws. The formal foundations of SAE Architecture Analysis & Design Language (AADL augmented with the Error Model Annex (EMV are discussed. The fault propagation, failure behaviour, and the composite behaviour of the design flaws/failures are considered for architecture safety analysis. The illustration of the proposed approach is validated by implementing the Speed Control Unit of Power-Boat Autopilot (PBA system. The Error Model Annex (EMV is guided with the pattern of consideration and inclusion of probable failure scenarios and propagation of fault conditions in the Speed Control Unit of Power-Boat Autopilot (PBA. This helps in validating the system architecture with the detection of the error event in the model and its impact in the operational environment. This also provides an insight of the certification impact that these exceptional conditions pose at various criticality levels and design assurance levels and its implications in verifying and validating the designs.

  8. Randomized control of open quantum systems

    CERN Document Server

    Viola, L

    2006-01-01

    The problem of open-loop dynamical control of generic open quantum systems is addressed. In particular, I focus on the task of effectively switching off environmental couplings responsible for unwanted decoherence and dissipation effects. After revisiting the standard framework for dynamical decoupling via deterministic controls, I describe a different approach whereby the controller intentionally acquires a random component. An explicit error bound on worst-case performance of stochastic decoupling is presented.

  9. Hanzix and Chinese Open System Platform

    Institute of Scientific and Technical Information of China (English)

    孙玉方

    1997-01-01

    International use of the UNIX system in recent years provokes a need to expand its functionality.Extensions are needed to process data in various languages as the market requirement dictate[1,2].With the advent of open systems and interfaces.the method of internationalization(I18N)has become standardized.Hanzix Association was founded by the Institute of Software,The Chinese Academy of Sciences(ISAS,Beijing),Institute of Information Industry ( Ⅲ,Taipei)and Chinese University of Hong Kong(CUHK,Hong Kong),and its aim is to promote an open system standard for Chinese character(Hanzi)processing.This paper presents Hanzix,an open system environment to support Hanzi processing,including enhancement recommended for Hanzi API,input method mechanism codeset conversion and announcement,and reviews the current work.

  10. Open quantum systems and random matrix theory

    Science.gov (United States)

    Mulhall, Declan

    2014-10-01

    A simple model for open quantum systems is analyzed with RMT. The system is coupled to the continuum in a minimal way. In this paper we see the effect of opening the system on the level statistics, in particular the level spacing, width distribution and Δ3(L) statistic are examined as a function of the strength of this coupling. The usual super-radiant state is observed, and it is seen that as it is formed, the level spacing and Δ3(L) statistic exhibit the signatures of missed levels.

  11. Open quantum systems and random matrix theory

    Energy Technology Data Exchange (ETDEWEB)

    Mulhall, Declan [Department of Physics/Engineering, University of Scranton, Scranton, Pennsylvania 18510-4642 (United States)

    2014-10-15

    A simple model for open quantum systems is analyzed with RMT. The system is coupled to the continuum in a minimal way. In this paper we see the effect of opening the system on the level statistics, in particular the level spacing, width distribution and Δ{sub 3}(L) statistic are examined as a function of the strength of this coupling. The usual super-radiant state is observed, and it is seen that as it is formed, the level spacing and Δ{sub 3}(L) statistic exhibit the signatures of missed levels.

  12. Open quantum systems and Random Matrix Theory

    CERN Document Server

    Mulhall, Declan

    2014-01-01

    A simple model for open quantum systems is analyzed with Random Matrix Theory. The system is coupled to the continuum in a minimal way. In this paper we see the effect of opening the system on the level statistics, in particular the $\\Delta_3(L)$ statistic, width distribution and level spacing are examined as a function of the strength of this coupling. A super-radiant transition is observed, and it is seen that as it is formed, the level spacing and $\\Delta_3(L)$ statistic exhibit the signatures of missed levels.

  13. Open quantum systems and random matrix theory

    Science.gov (United States)

    Mulhall, Declan

    2015-01-01

    A simple model for open quantum systems is analyzed with random matrix theory. The system is coupled to the continuum in a minimal way. In this paper the effect on the level statistics of opening the system is seen. In particular the Δ3(L ) statistic, the width distribution and the level spacing are examined as a function of the strength of this coupling. The emergence of a super-radiant transition is observed. The level spacing and Δ3(L ) statistics exhibit the signatures of missed levels or intruder levels as the super-radiant state is formed.

  14. Effective operator formalism for open quantum systems

    DEFF Research Database (Denmark)

    Reiter, Florentin; Sørensen, Anders Søndberg

    2012-01-01

    We present an effective operator formalism for open quantum systems. Employing perturbation theory and adiabatic elimination of excited states for a weakly driven system, we derive an effective master equation which reduces the evolution to the ground-state dynamics. The effective evolution...

  15. Hypothesis testing with open quantum systems.

    Science.gov (United States)

    Mølmer, Klaus

    2015-01-30

    Using a quantum circuit model we derive the maximal ability to distinguish which of several candidate Hamiltonians describe an open quantum system. This theory, in particular, provides the maximum information retrievable from continuous quantum measurement records, available when a quantum system is perturbatively coupled to a broadband quantized environment.

  16. Open Source and Open Standard based decision support system: the example of lake Verbano floods management.

    Science.gov (United States)

    Cannata, Massimiliano; Antonovic, Milan; Pozzoni, Maurizio; Graf, Andrea

    2015-04-01

    The Locarno area (Switzerland, Canton Ticino) is exposed to lacual floods with a return period of about 7-8 years. The risk is of particular concern because the area is located in a floodplain that registered in the last decades a great increase in settlement and values of the real estates. Moreover small differences in lake altitude may produce a significant increase in flooded area due to the very low average slope of the terrain. While fatalities are not generally registered, several important economic costs are associated, e.g.: damages to real estates, interruption of activities, evacuation and relocation and environmental damages. While important events were registered in 1978, 1993, 2000, 2002 and 2014 the local stakeholder invested time and money in the set-up of an up-to-date decision support system that allows for the reduction of risks. Thanks to impressive technological advances the visionary concept of the Digital Earth (Gore 1992, 1998) is being realizing: geospatial coverages and monitoring systems data are increasingly available on the Web, and more importantly, in a standard format. As a result, today is possible to develop innovative decision support systems (Molinari et al. 2013) which mesh-up several information sources and offers special features for risk scenarios evaluation. In agreement with the exposed view, the authors have recently developed a new Web system whose design is based on the Service Oriented Architecture pattern. Open source software (e.g.: Geoserver, PostGIS, OpenLayers) has been used throughout the whole system and geospatial Open Standards (e.g.: SOS, WMS, WFS) are the pillars it rely on. SITGAP 2.0, implemented in collaboration with the Civil protection of Locarno e Vallemaggia, combines a number of data sources such as the Federal Register of Buildings and Dwellings, the Cantonal Register of residents, the Cadastral Surveying, the Cantonal Hydro-meteorological monitoring observations, the Meteoswiss weather forecasts, and

  17. Developing Distributed System With Service Resource Oriented Architecture

    Directory of Open Access Journals (Sweden)

    Riyanarto Sarno

    2012-06-01

    Full Text Available Service Oriented Architecture is a design paradigm in software engineering with which a distributed system is built for an enterprise. This paradigm aims at providing the system as a service through a protocol in web service technology, namely Simple Object Access Protocol (SOAP. However, SOA is service level agreements of webservice. For this reason, this reasearch aims at combining SOA with Resource Oriented Architecture in order to expand scalability of services. This combination creates Sevice Resource Oriented Architecture (SROA with which a distributed system is developed that integrates services within project management software. Following this design, the software is developed according to a framework of Agile Model Driven Development which can reduce complexities of the whole process of software development.

  18. Architecture for Multi-Technology Real-Time Location Systems

    Directory of Open Access Journals (Sweden)

    Javier Rodas

    2013-02-01

    Full Text Available The rising popularity of location-based services has prompted considerable research in the field of indoor location systems. Since there is no single technology to support these systems, it is necessary to consider the fusion of the information coming from heterogeneous sensors. This paper presents a software architecture designed for a hybrid location system where we can merge information from multiple sensor technologies. The architecture was designed to be used by different kinds of actors independently and with mutual transparency: hardware administrators, algorithm developers and user applications. The paper presents the architecture design, work-flow, case study examples and some results to show how different technologies can be exploited to obtain a good estimation of a target position.

  19. Syst\\`emes interactifs sensibles aux \\'emotions : architecture logicielle

    CERN Document Server

    Clay, Alexis

    2007-01-01

    We propose a software architecture for interactive systems which allows integrating the user's emotion. Emotion can be involved in interaction at several levels. In our application case - ballet dance - emotions is explicitely manipulated by the interactive system to produce emotion-wise output. Our architecture model to develop emotion-wise applications is based on the PAC-Amodeus model. We add a branch to this model, divided into three components: Data capture, analysis and cue extraction, and finally interpretation of those cues. We show the different data flows between this architecture's components depending on the entry point of the emotion branch within the system. We then illustrate our model by describing our application case: capturing a ballet dancer's movement to extract the emotions he expresses and use these emotions to generate graphical content that is displayed on stage.

  20. On the Architecture of Systems for Situation Awareness

    NARCIS (Netherlands)

    Borth, M.

    2013-01-01

    Architectures for situation awareness systems originate from two main concerns: a functional view on the information processing that stems from domain experts’ understanding of their tasks and resources, and a system architect’s view on non-functional aspects of the operations that form such functio

  1. A software architecture for knowledge-based systems

    NARCIS (Netherlands)

    Fensel, D; Groenboom, R

    1999-01-01

    The paper introduces a software architecture for the specification and verification of knowledge-based systems combining conceptual and formal techniques. Our focus is component-based specification enabling their reuse. We identify four elements of the specification of a knowledge-based system: a ta

  2. A software architecture for knowledge-based systems

    NARCIS (Netherlands)

    Fensel, D; Groenboom, R

    The paper introduces a software architecture for the specification and verification of knowledge-based systems combining conceptual and formal techniques. Our focus is component-based specification enabling their reuse. We identify four elements of the specification of a knowledge-based system: a

  3. Using Software Architectures for Designing Distributed Embedded Systems

    DEFF Research Database (Denmark)

    Christensen, Henrik Bærbak

    In this paper, we outline an on-going project of designing distributed embedded systems for closed-loop process control. The project is a joint effort between software architecture researchers and developers from two companies that produce commercial embedded process control systems. The project...

  4. On the Architecture of Systems for Situation Awareness

    NARCIS (Netherlands)

    Borth, M.

    2013-01-01

    Architectures for situation awareness systems originate from two main concerns: a functional view on the information processing that stems from domain experts’ understanding of their tasks and resources, and a system architect’s view on non-functional aspects of the operations that form such

  5. Architectural design - Conception and specification of interactive systems

    NARCIS (Netherlands)

    Vissers, C.A.; Ferreira Pires, Luis; Quartel, Dick; van Sinderen, Marten J.

    2016-01-01

    This book presents a design methodology that is practically applicable to the architectural design of a broad range of systems. It is based on fundamental design concepts to conceive and specify the required functional properties of a system, while abstracting from the specific implementation

  6. ELISA, a demonstrator environment for information systems architecture design

    Science.gov (United States)

    Panem, Chantal

    1994-01-01

    This paper describes an approach of reusability of software engineering technology in the area of ground space system design. System engineers have lots of needs similar to software developers: sharing of a common data base, capitalization of knowledge, definition of a common design process, communication between different technical domains. Moreover system designers need to simulate dynamically their system as early as possible. Software development environments, methods and tools now become operational and widely used. Their architecture is based on a unique object base, a set of common management services and they host a family of tools for each life cycle activity. In late '92, CNES decided to develop a demonstrative software environment supporting some system activities. The design of ground space data processing systems was chosen as the application domain. ELISA (Integrated Software Environment for Architectures Specification) was specified as a 'demonstrator', i.e. a sufficient basis for demonstrations, evaluation and future operational enhancements. A process with three phases was implemented: system requirements definition, design of system architectures models, and selection of physical architectures. Each phase is composed of several activities that can be performed in parallel, with the provision of Commercial Off the Shelves Tools. ELISA has been delivered to CNES in January 94, currently used for demonstrations and evaluations on real projects (e.g. SPOT4 Satellite Control Center). It is on the way of new evolutions.

  7. An OpenCL implementation for the solution of TDSE on GPU and CPU architectures

    CERN Document Server

    O'Broin, Cathal

    2012-01-01

    Open Computing Language (OpenCL) is a parallel processing language that is ideally suited for running parallel algorithms on Graphical Processing Units (GPUs). In the present work we report the development of a generic parallel single-GPU code for the numerical solution of a system of first-order ordinary differential equations (ODEs) based on the openCL model. We have applied the code in the case of the time-dependent Schr\\"{o}dinger equation of atomic hydrogen in a strong laser field and studied its performance to the two basic kinds of compute units (GPUs and CPUs) . We found an excellent scalability and a significant speed-up of the GPU over the CPU device tending to a value of about 40.

  8. Rewriting Modulo SMT and Open System Analysis

    Science.gov (United States)

    Rocha, Camilo; Meseguer, Jose; Munoz, Cesar

    2014-01-01

    This paper proposes rewriting modulo SMT, a new technique that combines the power of SMT solving, rewriting modulo theories, and model checking. Rewriting modulo SMT is ideally suited to model and analyze infinite-state open systems, i.e., systems that interact with a non-deterministic environment. Such systems exhibit both internal non-determinism, which is proper to the system, and external non-determinism, which is due to the environment. In a reflective formalism, such as rewriting logic, rewriting modulo SMT can be reduced to standard rewriting. Hence, rewriting modulo SMT naturally extends rewriting-based reachability analysis techniques, which are available for closed systems, to open systems. The proposed technique is illustrated with the formal analysis of: (i) a real-time system that is beyond the scope of timed-automata methods and (ii) automatic detection of reachability violations in a synchronous language developed to support autonomous spacecraft operations.

  9. Proposed lidar receiver architecture for the CZMIL system

    Science.gov (United States)

    Payment, Andy; Feygels, Viktor; Fuchs, Eran

    2010-04-01

    The Coastal Zone Mapping and Imaging Lidar (CZMIL)1 system is a new generation airborne remote sensing system. The multi-sensor system integrates a lidar system, hyperspectral camera, digital camera, and a positioning system together to seamlessly record data over topographic and bathymetric environments. The recorded data is post-processed using data fusion algorithms to generate image products. In order to amplify the amount of information contained within the data fed to the algorithms, the architecture of the lidar receiver is designed using numerous techniques to maximize the quality of the recorded data. The receiver architecture employs commercial photomultiplier tubes operated in a logarithmic mode coupled to 10bit, 1GHz analog to digital converters. This architecture achieves sufficient dynamic range to support operating the system in both terrestrial and ocean environments. The multi-channel design of the lidar system requires the digitization of 9 channels of optical return signal data. The resulting large data volume necessitated design of a novel data reduction strategy. These important aspects of the lidar receiver's design are presented. The strategies illustrate how the receiver's architecture is designed to optimize the fidelity of the recorded data.

  10. The Architecture Improvement Method: cost management and systemic learning about strategic product architectures

    NARCIS (Netherlands)

    Weerd-Nederhof, de Petra C.; Wouters, Marc J.F.; Teuns, Steven J.A.; Hissel, Paul H.

    2007-01-01

    The architecture improvement method (AIM) is a method for multidisciplinary product architecture improvement, addressing uncertainty and complexity and incorporating feedback loops, facilitating trade-off decision making during the architecture creation process. The research reported in this paper d

  11. VirusMapper: open-source nanoscale mapping of viral architecture through super-resolution microscopy

    Science.gov (United States)

    Gray, Robert D. M.; Beerli, Corina; Pereira, Pedro Matos; Scherer, Kathrin Maria; Samolej, Jerzy; Bleck, Christopher Karl Ernst; Mercer, Jason; Henriques, Ricardo

    2016-01-01

    The nanoscale molecular assembly of mammalian viruses during their infectious life cycle remains poorly understood. Their small dimensions, generally bellow the 300nm diffraction limit of light microscopes, has limited most imaging studies to electron microscopy. The recent development of super-resolution (SR) light microscopy now allows the visualisation of viral structures at resolutions of tens of nanometers. In addition, these techniques provide the added benefit of molecular specific labelling and the capacity to investigate viral structural dynamics using live-cell microscopy. However, there is a lack of robust analytical tools that allow for precise mapping of viral structure within the setting of infection. Here we present an open-source analytical framework that combines super-resolution imaging and naïve single-particle analysis to generate unbiased molecular models. This tool, VirusMapper, is a high-throughput, user-friendly, ImageJ-based software package allowing for automatic statistical mapping of conserved multi-molecular structures, such as viral substructures or intact viruses. We demonstrate the usability of VirusMapper by applying it to SIM and STED images of vaccinia virus in isolation and when engaged with host cells. VirusMapper allows for the generation of accurate, high-content, molecular specific virion models and detection of nanoscale changes in viral architecture. PMID:27374400

  12. An agile and cooperative architecture for distributed manufacturing systems

    OpenAIRE

    Leitão, Paulo; Restivo, Francisco

    2001-01-01

    World-wide competition among enterprises leads to the need for new systems to perform the control of distributed manufacturing systems, through the integration of information systems and self-organisation features, in order to adapt quickly to the environment changes. This paper presents an agile and cooperative architecture for distributed manufacturing systems based in the multiagent technology which implements some holonic and bionic concepts and supports a new control approach, including ...

  13. Bio-signal analysis system design with support vector machines based on cloud computing service architecture.

    Science.gov (United States)

    Shen, Chia-Ping; Chen, Wei-Hsin; Chen, Jia-Ming; Hsu, Kai-Ping; Lin, Jeng-Wei; Chiu, Ming-Jang; Chen, Chi-Huang; Lai, Feipei

    2010-01-01

    Today, many bio-signals such as Electroencephalography (EEG) are recorded in digital format. It is an emerging research area of analyzing these digital bio-signals to extract useful health information in biomedical engineering. In this paper, a bio-signal analyzing cloud computing architecture, called BACCA, is proposed. The system has been designed with the purpose of seamless integration into the National Taiwan University Health Information System. Based on the concept of. NET Service Oriented Architecture, the system integrates heterogeneous platforms, protocols, as well as applications. In this system, we add modern analytic functions such as approximated entropy and adaptive support vector machine (SVM). It is shown that the overall accuracy of EEG bio-signal analysis has increased to nearly 98% for different data sets, including open-source and clinical data sets.

  14. Research on the Architecture of the CAD System of a Magnetic Bearing Based on Pattern-oriented

    Institute of Scientific and Technical Information of China (English)

    CHEN Rui-qing; SUN Yan-hua; CHEN Jian-bin; YU Lie

    2006-01-01

    The architecture of the CAD system of a magnetic bearing is established by using pattern-oriented software architecture.Based on the pipe-filter pattern, all the present resources come from different developing environments, aiding the design of a magnetic bearing system, can be integrated into the system. Replacing the original pipes with database, the concurrent design can be realized in the design process,which changes the serial mode of traditional manufacture.The distributed and heterogeneous design resources can be integrated into the system and shared by importing the broker pattern. Combining pipe-filter pattern with broker pattern, the system is opening and easy to maintain and extend.

  15. The architecture of the management system of complex steganographic information

    Science.gov (United States)

    Evsutin, O. O.; Meshcheryakov, R. V.; Kozlova, A. S.; Solovyev, T. M.

    2017-01-01

    The aim of the study is to create a wide area information system that allows one to control processes of generation, embedding, extraction, and detection of steganographic information. In this paper, the following problems are considered: the definition of the system scope and the development of its architecture. For creation of algorithmic maintenance of the system, classic methods of steganography are used to embed information. Methods of mathematical statistics and computational intelligence are used to identify the embedded information. The main result of the paper is the development of the architecture of the management system of complex steganographic information. The suggested architecture utilizes cloud technology in order to provide service using the web-service via the Internet. It is meant to provide streams of multimedia data processing that are streams with many sources of different types. The information system, built in accordance with the proposed architecture, will be used in the following areas: hidden transfer of documents protected by medical secrecy in telemedicine systems; copyright protection of online content in public networks; prevention of information leakage caused by insiders.

  16. Supervisory Control System Architecture for Advanced Small Modular Reactors

    Energy Technology Data Exchange (ETDEWEB)

    Cetiner, Sacit M [ORNL; Cole, Daniel L [University of Pittsburgh; Fugate, David L [ORNL; Kisner, Roger A [ORNL; Melin, Alexander M [ORNL; Muhlheim, Michael David [ORNL; Rao, Nageswara S [ORNL; Wood, Richard Thomas [ORNL

    2013-08-01

    This technical report was generated as a product of the Supervisory Control for Multi-Modular SMR Plants project within the Instrumentation, Control and Human-Machine Interface technology area under the Advanced Small Modular Reactor (SMR) Research and Development Program of the U.S. Department of Energy. The report documents the definition of strategies, functional elements, and the structural architecture of a supervisory control system for multi-modular advanced SMR (AdvSMR) plants. This research activity advances the state-of-the art by incorporating decision making into the supervisory control system architectural layers through the introduction of a tiered-plant system approach. The report provides a brief history of hierarchical functional architectures and the current state-of-the-art, describes a reference AdvSMR to show the dependencies between systems, presents a hierarchical structure for supervisory control, indicates the importance of understanding trip setpoints, applies a new theoretic approach for comparing architectures, identifies cyber security controls that should be addressed early in system design, and describes ongoing work to develop system requirements and hardware/software configurations.

  17. Mark 4A antenna control system data handling architecture study

    Science.gov (United States)

    Briggs, H. C.; Eldred, D. B.

    1991-01-01

    A high-level review was conducted to provide an analysis of the existing architecture used to handle data and implement control algorithms for NASA's Deep Space Network (DSN) antennas and to make system-level recommendations for improving this architecture so that the DSN antennas can support the ever-tightening requirements of the next decade and beyond. It was found that the existing system is seriously overloaded, with processor utilization approaching 100 percent. A number of factors contribute to this overloading, including dated hardware, inefficient software, and a message-passing strategy that depends on serial connections between machines. At the same time, the system has shortcomings and idiosyncrasies that require extensive human intervention. A custom operating system kernel and an obscure programming language exacerbate the problems and should be modernized. A new architecture is presented that addresses these and other issues. Key features of the new architecture include a simplified message passing hierarchy that utilizes a high-speed local area network, redesign of particular processing function algorithms, consolidation of functions, and implementation of the architecture in modern hardware and software using mainstream computer languages and operating systems. The system would also allow incremental hardware improvements as better and faster hardware for such systems becomes available, and costs could potentially be low enough that redundancy would be provided economically. Such a system could support DSN requirements for the foreseeable future, though thorough consideration must be given to hard computational requirements, porting existing software functionality to the new system, and issues of fault tolerance and recovery.

  18. Open Tiled Manycore System-on-Chip

    OpenAIRE

    Wallentowitz, Stefan; Wagner, Philipp; Tempelmeier, Michael; Wild, Thomas; Herkersdorf, Andreas

    2013-01-01

    Manycore System-on-Chip include an increasing amount of processing elements and have become an important research topic for improvements of both hardware and software. While research can be conducted using system simulators, prototyping requires a variety of components and is very time consuming. With the Open Tiled Manycore System-on-Chip (OpTiMSoC) we aim at building such an environment for use in our and other research projects as prototyping platform. This paper describes the project goal...

  19. Architecture of Network Management Tools for Heterogeneous System

    CERN Document Server

    Hassan, Rosilah; Mohseni, Shima; Mohamad, Ola; Ismail, Zahian

    2010-01-01

    Managing heterogeneous network systems is a difficult task because each of these networks has its own curious management system. These networks usually are constructed on independent management protocols which are not compatible with each other. This results in the coexistence of many management systems with different managing functions and services across enterprises. Incompatibility of different management systems makes management of whole system a very complex and often complicated job. Ideally, it is necessary to implement centralized metalevel management across distributed heterogeneous systems and their underlying supporting network systems where the information flow and guidance is provided via a single console or single operating panels which integrates all the management functions in spite of their individual protocols and structures. This paper attempts to provide a novel network management tool architecture which supports heterogeneous managements across many different architectural platforms. Furt...

  20. Transformation of legacy network management system to service oriented architecture

    Science.gov (United States)

    Sathyan, Jithesh; Shenoy, Krishnananda

    2007-09-01

    Service providers today are facing the challenge of operating and maintaining multiple networks, based on multiple technologies. Network Management System (NMS) solutions are being used to manage these networks. However the NMS is tightly coupled with Element or the Core network components. Hence there are multiple NMS solutions for heterogeneous networks. Current network management solutions are targeted at a variety of independent networks. The wide spread popularity of IP Multimedia Subsystem (IMS) is a clear indication that all of these independent networks will be integrated into a single IP-based infrastructure referred to as Next Generation Networks (NGN) in the near future. The services, network architectures and traffic pattern in NGN will dramatically differ from the current networks. The heterogeneity and complexity in NGN including concepts like Fixed Mobile Convergence will bring a number of challenges to network management. The high degree of complexity accompanying the network element technology necessitates network management systems (NMS) which can utilize this technology to provide more service interfaces while hiding the inherent complexity. As operators begin to add new networks and expand existing networks to support new technologies and products, the necessity of scalable, flexible and functionally rich NMS systems arises. Another important factor influencing NMS architecture is mergers and acquisitions among the key vendors. Ease of integration is a key impediment in the traditional hierarchical NMS architecture. These requirements trigger the need for an architectural framework that will address the NGNM (Next Generation Network Management) issues seamlessly. This paper presents a unique perspective of bringing service orientated architecture (SOA) to legacy network management systems (NMS). It advocates a staged approach in transforming a legacy NMS to SOA. The architecture at each stage is detailed along with the technical advantages and

  1. THE OPEN EDUCATION SYSTEM: FORMATION AND FUNCTIONING

    Directory of Open Access Journals (Sweden)

    Julia A. Mamonova

    2014-01-01

    Full Text Available The study is aimed at developing the basic principles of foundation and functioning of the open educational system, its relevance results from the strategic goal of knowledge integration facing the modern universities.The research findings and novelty: The author identifies the general needs of the users of open educational resources and proves the advantages of organizing the institutional repositories, based on sociological surveys targeting the university students of Nizhny Novgorod and academic staff of several Russian higher schools. The basic principles of the unified educational information and communications environment were developed, and a feasible structure of educational portal presented.The practical significance: The research outcomes, complying with the new ≪consumer strategies≫, can be used by the higher educational institutions for developing the distance system of education and implementing the open educational resources in academic process.

  2. Open quantum systems far from equilibrium

    CERN Document Server

    Schaller, Gernot

    2014-01-01

    This monograph provides graduate students and also professional researchers aiming to understand the dynamics of open quantum systems with a valuable and self-contained toolbox. Special focus is laid on the link between microscopic models and the resulting open-system dynamics. This includes how to derive the celebrated Lindblad master equation without applying the rotating wave approximation. As typical representatives for non-equilibrium configurations it treats systems coupled to multiple reservoirs (including the description of quantum transport), driven systems, and feedback-controlled quantum systems. Each method is illustrated with easy-to-follow examples from recent research. Exercises and short summaries at the end of every chapter enable the reader to approach the frontiers of current research quickly and make the book useful for quick reference.

  3. Open systems dependability dependability engineering for ever-changing systems

    CERN Document Server

    Tokoro, Mario

    2015-01-01

    The book describes a fundamentally new approach to software dependability, considering a software system as an ever-changing system due to changes in service objectives, users' requirements, standards and regulations, and to advances in technology. Such a system is viewed as an Open System since its functions, structures, and boundaries are constantly changing. Thus, the approach to dependability is called Open Systems Dependability. The DEOS technology realizes Open Systems Dependability. It puts more emphasis on stakeholders' agreement and accountability achievement for business/service cont

  4. Communication System Architecture for Planetary Exploration

    Science.gov (United States)

    Braham, Stephen P.; Alena, Richard; Gilbaugh, Bruce; Glass, Brian; Norvig, Peter (Technical Monitor)

    2001-01-01

    Future human missions to Mars will require effective communications supporting exploration activities and scientific field data collection. Constraints on cost, size, weight and power consumption for all communications equipment make optimization of these systems very important. These information and communication systems connect people and systems together into coherent teams performing the difficult and hazardous tasks inherent in planetary exploration. The communication network supporting vehicle telemetry data, mission operations, and scientific collaboration must have excellent reliability, and flexibility.

  5. Reconfigurable radio systems network architectures and standards

    CERN Document Server

    Iacobucci, Maria Stella

    2013-01-01

    This timely book provides a standards-based view of the development, evolution, techniques and potential future scenarios for the deployment of reconfigurable radio systems.  After an introduction to radiomobile and radio systems deployed in the access network, the book describes cognitive radio concepts and capabilities, which are the basis for reconfigurable radio systems.  The self-organizing network features introduced in 3GPP standards are discussed and IEEE 802.22, the first standard based on cognitive radio, is described. Then the ETSI reconfigurable radio systems functional ar

  6. Architectural Prototyping

    DEFF Research Database (Denmark)

    Bardram, Jakob; Christensen, Henrik Bærbak; Hansen, Klaus Marius

    2004-01-01

    ' concerns with respect to a system under development. An architectural prototype is primarily a learning and communication vehicle used to explore and experiment with alternative architectural styles, features, and patterns in order to balance different architectural qualities. The use of architectural......A major part of software architecture design is learning how specific architectural designs balance the concerns of stakeholders. We explore the notion of "architectural prototypes", correspondingly architectural prototyping, as a means of using executable prototypes to investigate stakeholders...

  7. Statistical modeling of nitrogen-dependent modulation of root system architecture in Arabidopsis thaliana

    Institute of Scientific and Technical Information of China (English)

    Takao Araya; Takuya Kubo; Nicolaus von Wiren; Hideki Takahashi

    2016-01-01

    Plant root development is strongly affected by nutrient availability. Despite the importance of structure and function of roots in nutrient acquisition, statistical modeling approaches to evaluate dynamic and temporal modulations of root system architecture in response to nutrient availability have remained as widely open and exploratory areas in root biology. In this study, we developed a statistical modeling approach to investigate modulations of root system archi-tecture in response to nitrogen availability. Mathematical models were designed for quantitative assessment of root growth and root branching phenotypes and their dynamic relationships based on hierarchical configuration of primary and lateral roots formulating the fishbone-shaped root system architecture in Arabidopsis thaliana. Time-series datasets reporting dynamic changes in root developmental traits on different nitrate or ammonium concentrations were gener-ated for statistical analyses. Regression analyses unraveled key parameters associated with:(i) inhibition of primary root growth under nitrogen limitation or on ammonium;(i ) rapid progression of lateral root emergence in response to ammonium; and (i i) inhibition of lateral root elongation in the presence of excess nitrate or ammonium. This study provides a statistical framework for interpreting dynamic modulation of root system architecture, supported by meta-analysis of datasets displaying morphological responses of roots to diverse nitrogen supplies.

  8. Exporting Humanist Architecture

    DEFF Research Database (Denmark)

    Nielsen, Tom

    2016-01-01

    values and ethical stands involved in the export of Danish Architecture. Abstract: Danish architecture has, in a sense, been driven by an unwritten contract between the architects and the democratic state and its institutions. This contract may be viewed as an ethos – an architectural tradition...... with inherent aesthetic and moral values. Today, however, Danish architecture is also an export commodity. That raises questions, which should be debated as openly as possible. What does it mean for architecture and architects to practice in cultures and under political systems that do not use architecture...... as a way of generating humanism, freedom or equality? The essay outlines the background story, identifies a number of positions in relation to architecture exports and discusses some of the dilemmas that arise when Danish architecture is seen in an export perspective....

  9. CONTENT MANAGEMENT SYSTEMS (CMS OPEN SOURCE WEBSITES

    Directory of Open Access Journals (Sweden)

    Marinela Lăzărică

    2013-01-01

    Full Text Available Firms need flexible software applications, which may be adaptable to dynamic changes of the modern business environment; they also need more control over their software costs, security and trust in purchased and implemented software. Moreover, they need to be free of individual software vendors and license costs for the software, etc. The solution of this problem consisted in open source applications and open source technology has proven that it can often provide high-quality software being a challenge for old models of software development and maintenance. The first content management system was announced in the late 90s. The offer of such software systems is varied and each of them has its own characteristics. This requires a comparative analysis of viable open-source systems in order to choose the most appropriate imposed goals. In this context, the paper illustrates the use of an open source content management system, like WordPress, to develop a content site in design of websites and analyzeits characteristics.

  10. System level modelling with open source tools

    DEFF Research Database (Denmark)

    Jakobsen, Mikkel Koefoed; Madsen, Jan; Niaki, Seyed Hosein Attarzadeh;

    , called ForSyDe. ForSyDe is available under the open Source approach, which allows small and medium enterprises (SME) to get easy access to advanced modeling capabilities and tools. We give an introduction to the design methodology through the system level modeling of a simple industrial use case, and we...

  11. Harnessing piecewise-linear systems to construct dynamic logic architecture.

    Science.gov (United States)

    Peng, Haipeng; Yang, Yixian; Li, Lixiang; Luo, Hong

    2008-09-01

    This paper explores piecewise-linear systems to construct dynamic logic architecture. We present three schemes to obtain various basic logic gates, adders, and memory by using piecewise-linear systems. These schemes can switch easily among different operational roles by changing parameters. The proposed schemes are computationally efficient and easy to use. It is convenient for us to study and analyze them with the theory of linear systems.

  12. Phosphate-dependent root system architecture responses to salt stress

    NARCIS (Netherlands)

    Kawa, D.; Julkowska, M.M.; Montero Sommerfeld, H.; ter Horst, A.; Haring, M.A.; Testerink, C.

    2016-01-01

    Nutrient availability and salinity of the soil affect growth and development of plant roots. Here, we describe how phosphate availability affects root system architecture (RSA) of Arabidopsis and how phosphate levels modulate responses of the root to salt stress. Phosphate (Pi) starvation reduced ma

  13. An Architecture for Nested Transaction Support on Standard Database Systems

    NARCIS (Netherlands)

    Boertjes, E.M.; Grefen, P.W.P.J.; Vonk, J.; Apers, Peter M.G.

    Many applications dealing with complex processes require database support for nested transactions. Current commercial database systems lack this kind of support, offering flat, non-nested transactions only. This paper presents a three-layer architecture for implementing nested transaction support on

  14. Characterization of alfalfa populations contrasting for root system architecture (RSA)

    Science.gov (United States)

    The root system architecture affects the capacity for nutrient and water uptake thus impacting biomass yield production and may contribute to the persistence of perennial plants. The objectives of this study were to phenotype the roots of three alfalfa populations and identify differences between di...

  15. Architecture of fast IP forwarding engine in gigabit ethernet system

    Science.gov (United States)

    Do, Han C.; Lee, Hyeong H.; Cha, Kyoon Hyun

    1999-11-01

    In recent years, Internet traffic has been increased rapidly as a result of the Internet which accommodates multimedia traffic such as IP telephony and video conference. Gigabit routing technology is one possible approach to handle such internet traffic. This paper presents an efficient IP forwarding architecture adequate for Gigabit Ethernet switching system. The presented IP forwarding architecture is based upon distributed and pipelined process, which can effectively facilitate searching, editing, traffic classification, forwarding, and traffic management in parallel. Additionally, it can also process packets at full wire-speed in the ASIC level.

  16. Architecture Design Approaches and Issues in Cross Layer Systems

    DEFF Research Database (Denmark)

    Cattoni, Andrea Fabio; Sørensen, Troels Bundgaard; Mogensen, Preben

    2012-01-01

    the traditional protocol stack design methodology. However, Cross Layer also carries a risk due to possibly unexpected and undesired effects. In this chapter we want to provide architecture designers with a set of tools and recommendations synthesized from an analysis of the state of art, but enriched......Wireless communications are a fast grown part of the telecommunication market. While new types of traffic and challenges related to the wireless medium are appearing, the methodologies for designing system architectures are substantially remaining the same. Under the increasing pressure of market...

  17. Automated evaluation of service oriented architecture systems: a case study

    Science.gov (United States)

    Fouad, Hesham; Gilliam, Antonio; Guleyupoglu, Suleyman; Russell, Stephen M.

    2017-05-01

    The Service Oriented Architecture (SOA) model is fast gaining dominance in how software applications are built. They allow organizations to capitalize on existing services and share data amongst distributed applications. The automatic evaluation of SOA systems poses a challenging problem due to three factors: technological complexity, organizational incompatibility, and integration into existing development pipelines. In this paper we describe our experience in developing and deploying an automated evaluation capability for the Marine Corps' Tactical Service Oriented Architecture (TSOA). We outline the technological, policy, and operational challenges we face and how we are addressing them.

  18. Video signals integrator (VSI) system architecture

    Science.gov (United States)

    Kasprowicz, Grzegorz; Pastuszak, Grzegorz; Poźniak, Krzysztof; Trochimiuk, Maciej; Abramowski, Andrzej; Gaska, Michal; Bukowiecka, Danuta; Tyburska, Agata; Struniawski, Jarosław; Jastrzebski, Pawel; Jewartowski, Blazej; Frasunek, Przemysław; Nalbach-Moszynska, Małgorzata; Brawata, Sebastian; Bubak, Iwona; Gloza, Małgorzata

    2016-09-01

    The purpose of the project is development of a platform which integrates video signals from many sources. The signals can be sourced by existing analogue CCTV surveillance installations, recent internet-protocol (IP) cameras or single cameras of any type. The system will consist of portable devices that provide conversion, encoding, transmission and archiving. The sharing subsystem will use distributed file system and also user console which provides simultaneous access to any of video streams in real time. The system is fully modular so its extension is possible, both from hardware and software side. Due to standard modular technology used, partial technology modernization is also possible during a long exploitation period.

  19. Applying representational state transfer (REST) architecture to archetype-based electronic health record systems.

    Science.gov (United States)

    Sundvall, Erik; Nyström, Mikael; Karlsson, Daniel; Eneling, Martin; Chen, Rong; Örman, Håkan

    2013-05-09

    The openEHR project and the closely related ISO 13606 standard have defined structures supporting the content of Electronic Health Records (EHRs). However, there is not yet any finalized openEHR specification of a service interface to aid application developers in creating, accessing, and storing the EHR content.The aim of this paper is to explore how the Representational State Transfer (REST) architectural style can be used as a basis for a platform-independent, HTTP-based openEHR service interface. Associated benefits and tradeoffs of such a design are also explored. The main contribution is the formalization of the openEHR storage, retrieval, and version-handling semantics and related services into an implementable HTTP-based service interface. The modular design makes it possible to prototype, test, replicate, distribute, cache, and load-balance the system using ordinary web technology. Other contributions are approaches to query and retrieval of the EHR content that takes caching, logging, and distribution into account. Triggering on EHR change events is also explored.A final contribution is an open source openEHR implementation using the above-mentioned approaches to create LiU EEE, an educational EHR environment intended to help newcomers and developers experiment with and learn about the archetype-based EHR approach and enable rapid prototyping. Using REST addressed many architectural concerns in a successful way, but an additional messaging component was needed to address some architectural aspects. Many of our approaches are likely of value to other archetype-based EHR implementations and may contribute to associated service model specifications.

  20. 开放5G网络架构与开源平台%Open 5G Network Architecture and Open Source Platform

    Institute of Scientific and Technical Information of China (English)

    赵明; 王京; 田志刚

    2016-01-01

    This paper proposes an open framework and corresponding open network architecture. The flexible mapping from three kinds of application scenarios to three groups of key performance indicators (KPIs) determines that it is necessary to construct specific network slice from a common resource pool. The openness of network architecture is the base to guarantee the agile slicing. In addition, the evolution of network and KPIs need also change the style of conventional vertical close architecture. The proposed open architecture provides corresponding modules in each layer and domain, and redesigns the conventional architecture with decoupling and centralization. This solution tries to meet the needs of cel ular performance, network efficiencies and application requirement, and combines with the open source cooperation practices.%提出一种开放网络研究框架,及其开放网络架构解决方案。认为5G的3种业务场景向3类关键技术指标的灵活映射需求,决定了基于公共资源池的网络切片化是必然之选,网络架构的开放性是保障敏捷切片所必须的,网络和技术指标的演进也决定了传统垂直封闭网络架构不可持续。在该开放研究框架中,各层、各域均给出了相应的技术模块,传统垂直封闭网络协议架构也分别进行了解耦和集中化重构。该方案尝试性地满足性能、效率和业务需求,并与开源协作开发模式结合。

  1. Speech Recognition System Architecture for Gujarati Language

    National Research Council Canada - National Science Library

    Jinal H Tailor; Dipti B Shah

    2016-01-01

    .... To achieve good accuracy and efficiency of Automatic Speech Recognition (ASR) system for Indian Gujarati language is challenging task due to its morphology, language barriers, different dialects, and unavailability of resources...

  2. Systemic Risk and Optimal Regulatory Architecture

    NARCIS (Netherlands)

    Espinosa-Vega, M.A.; Kahn, C.; Matta, R.; Sole, J.

    2011-01-01

    Until the recent financial crisis, the safety and soundness of financial institutions was assessed from the perspective of the individual institution. The financial crisis highlighted the need to take systemic externalities seriously when rethinking prudential oversight and the regulatory architectu

  3. Architecture Of A Identity Based Firewall System

    CERN Document Server

    Stojanovski, Nenad

    2011-01-01

    Classic firewall systems are built to filter traffic based on IP addresses, source and destination ports and protocol types. The modern networks have grown to a level where the possibility for users' mobility is a must. In such networks, modern firewalls may introduce such complexity where administration can become very frustrating since it needs the intervention of a firewall administrator. The solution for this problem is an identity based firewall system. In this paper we will present a new design of a firewall system that uses the user's identity to filter the traffic. In the design phase we will define key points which have to be satisfied as a crucial milestone for the functioning of the whole Identity based firewall system.

  4. Agents in an Integrated System Architecture

    DEFF Research Database (Denmark)

    Hartvig, Susanne C; Andersen, Tom

    1997-01-01

    This paper presents research findings from development of an expert system and its integration into an integrated environment. Expert systems has proven hard to integrate because of their interactive nature. A prototype environment was developed using new integration technologies, and research...... findings concerning the use of OLE technology to integrate stand alone applications are discussed. The prototype shows clear advantages of using OLE technology when developing integrated environments....

  5. A fraud management system architecture for next-generation networks.

    Science.gov (United States)

    Bihina Bella, M A; Eloff, J H P; Olivier, M S

    2009-03-10

    This paper proposes an original architecture for a fraud management system (FMS) for convergent. Next-generation networks (NGNs), which are based on the Internet protocol (IP). The architecture has the potential to satisfy the requirements of flexibility and application-independency for effective fraud detection in NGNs that cannot be met by traditional FMSs. The proposed architecture has a thorough four-stage detection process that analyses billing records in IP detail record (IPDR) format - an emerging IP-based billing standard - for signs of fraud. Its key feature is its usage of neural networks in the form of self-organising maps (SOMs) to help uncover unknown NGN fraud scenarios. A prototype was implemented to test the effectiveness of using a SOM for fraud detection and is also described in the paper.

  6. An Optimal Controller Architecture for Poset-Causal Systems

    CERN Document Server

    Shah, Parikshit

    2011-01-01

    We propose a novel and natural architecture for decentralized control that is applicable whenever the underlying system has the structure of a partially ordered set (poset). This controller architecture is based on the concept of Moebius inversion for posets, and enjoys simple and appealing separation properties, since the closed-loop dynamics can be analyzed in terms of decoupled subsystems. The controller structure provides rich and interesting connections between concepts from order theory such as Moebius inversion and control-theoretic concepts such as state prediction, correction, and separability. In addition, using our earlier results on H_2-optimal decentralized control for arbitrary posets, we prove that the H_2-optimal controller in fact possesses the proposed structure, thereby establishing the optimality of the new controller architecture.

  7. ARCHITECTURE OF WEB BASED COMPUTER-AIDED MANUFACTURING SYSTEM

    Directory of Open Access Journals (Sweden)

    N. E. Filyukov

    2014-09-01

    Full Text Available The paper deals with design of a web-based system for Computer-Aided Manufacturing (CAM. Remote applications and databases located in the "private cloud" are proposed to be the basis of such system. The suggested approach contains: service - oriented architecture, using web applications and web services as modules, multi-agent technologies for implementation of information exchange functions between the components of the system and the usage of PDM - system for managing technology projects within the CAM. The proposed architecture involves CAM conversion into the corporate information system that will provide coordinated functioning of subsystems based on a common information space, as well as parallelize collective work on technology projects and be able to provide effective control of production planning. A system has been developed within this architecture which gives the possibility for a rather simple technological subsystems connect to the system and implementation of their interaction. The system makes it possible to produce CAM configuration for a particular company on the set of developed subsystems and databases specifying appropriate access rights for employees of the company. The proposed approach simplifies maintenance of software and information support for CAM subsystems due to their central location in the data center. The results can be used as a basis for CAM design and testing within the learning process for development and modernization of the system algorithms, and then can be tested in the extended enterprise.

  8. Water Recovery System Architecture and Operational Concepts to Accommodate Dormancy

    Science.gov (United States)

    Carter, Layne; Tabb, David; Anderson, Molly

    2017-01-01

    Future manned missions beyond low Earth orbit will include intermittent periods of extended dormancy. The mission requirement includes the capability for life support systems to support crew activity, followed by a dormant period of up to one year, and subsequently for the life support systems to come back online for additional crewed missions. NASA personnel are evaluating the architecture and operational concepts that will allow the Water Recovery System (WRS) to support such a mission. Dormancy could be a critical issue due to concerns with microbial growth or chemical degradation that might prevent water systems from operating properly when the crewed mission began. As such, it is critical that the water systems be designed to accommodate this dormant period. This paper identifies dormancy issues, concepts for updating the WRS architecture and operational concepts that will enable the WRS to support the dormancy requirement.

  9. The architecture of the High Performance Storage System (HPSS)

    Energy Technology Data Exchange (ETDEWEB)

    Teaff, D.; Coyne, B. [IBM Federal, Houston, TX (United States); Watson, D. [Lawrence Livermore National Lab., CA (United States)

    1995-01-01

    The rapid growth in the size of datasets has caused a serious imbalance in I/O and storage system performance and functionality relative to application requirements and the capabilities of other system components. The High Performance Storage System (HPSS) is a scalable, next-generation storage system that will meet the functionality and performance requirements of large-scale scientific and commercial computing environments. Our goal is to improve the performance and capacity of storage systems by two orders of magnitude or more over what is available in the general or mass marketplace today. We are also providing corresponding improvements in architecture and functionality. This paper describes the architecture and functionality of HPSS.

  10. A Secure System Architecture for Measuring Instruments in Legal Metrology

    Directory of Open Access Journals (Sweden)

    Daniel Peters

    2015-03-01

    Full Text Available Embedded systems show the tendency of becoming more and more connected. This fact combined with the trend towards the Internet of Things, from which measuring instruments are not immune (e.g., smart meters, lets one assume that security in measuring instruments will inevitably play an important role soon. Additionally, measuring instruments have adopted general-purpose operating systems to offer the user a broader functionality that is not necessarily restricted towards measurement alone. In this paper, a flexible software system architecture is presented that addresses these challenges within the framework of essential requirements laid down in the Measuring Instruments Directive of the European Union. This system architecture tries to eliminate the risks general-purpose operating systems have by wrapping them, together with dedicated applications, in secure sandboxes, while supervising the communication between the essential parts and the outside world.

  11. Discrete optimization in architecture extremely modular systems

    CERN Document Server

    Zawidzki, Machi

    2017-01-01

    This book is comprised of two parts, both of which explore modular systems: Pipe-Z (PZ) and Truss-Z (TZ), respectively. It presents several methods of creating PZ and TZ structures subjected to discrete optimization. The algorithms presented employ graph-theoretic and heuristic methods. The underlying idea of both systems is to create free-form structures using the minimal number of types of modular elements. PZ is more conceptual, as it forms single-branch mathematical knots with a single type of module. Conversely, TZ is a skeletal system for creating free-form pedestrian ramps and ramp networks among any number of terminals in space. In physical space, TZ uses two types of modules that are mirror reflections of each other. The optimization criteria discussed include: the minimal number of units, maximal adherence to the given guide paths, etc.

  12. Trust-based information system architecture for personal wellness.

    Science.gov (United States)

    Ruotsalainen, Pekka; Nykänen, Pirkko; Seppälä, Antto; Blobel, Bernd

    2014-01-01

    Modern eHealth, ubiquitous health and personal wellness systems take place in an unsecure and ubiquitous information space where no predefined trust occurs. This paper presents novel information model and an architecture for trust based privacy management of personal health and wellness information in ubiquitous environment. The architecture enables a person to calculate a dynamic and context-aware trust value for each service provider, and using it to design personal privacy policies for trustworthy use of health and wellness services. For trust calculation a novel set of measurable context-aware and health information-sensitive attributes is developed. The architecture enables a person to manage his or her privacy in ubiquitous environment by formulating context-aware and service provider specific policies. Focus groups and information modelling was used for developing a wellness information model. System analysis method based on sequential steps that enable to combine results of analysis of privacy and trust concerns and the selection of trust and privacy services was used for development of the information system architecture. Its services (e.g. trust calculation, decision support, policy management and policy binding services) and developed attributes enable a person to define situation-aware policies that regulate the way his or her wellness and health information is processed.

  13. A Novel Home Energy Management System Architecture

    DEFF Research Database (Denmark)

    Rossello Busquet, Ana; Soler, José; Dittmann, Lars

    2011-01-01

    The number of electronic devices found in home environments is increasing, leading to an increase in the energy consumption in users’ premises. Introducing a Home Energy Management System (HEMS) into user residences might provide the necessary tools to reduce and optimize the energy consumption...... the different devices at the service level and provides the necessary tools to apply energy management strategies....

  14. Space-Based Solar Power System Architecture

    Science.gov (United States)

    2012-12-01

    Panel 100,000,000 kg Power Storage 176,000 kg Diode- pumped Laser Transmitter 5,000,000 kg TOTAL SYSTEM WEIGHT 105,181,400 kg 73 deployed...64 a. Power Storage Requirements .................................................65 b. Energy Transfer...alternatives to fossil fuels: nuclear fission reactors, hydroelectric power, wind turbines and solar power to name just a few. Each has advantages

  15. Control Architecture Modeling for Future Power Systems

    DEFF Research Database (Denmark)

    Heussen, Kai

    and operation structures; and finally the application to some concrete study cases, including a present system balancing, and proposed control structures such as Microgrids and Cells. In the second part, the main contributions are the outline of a formation strategy, integrating the design and model...

  16. Waves in Open Systems Eigenfunction Expansions

    CERN Document Server

    Ching, E S C; Suen, W M; Tong, S S; Young, K

    1998-01-01

    An open system is not conservative because energy can escape to the outside. An open system by itself is thus not conservative. As a result, the time-evolution operator is not hermitian in the usual sense and the eigenfunctions (factorized solutions in space and time) are no longer normal modes but quasinormal modes (QNMs) whose frequencies $\\omega$ are complex. QNM analysis has been a powerful tool for investigating open systems. Previous studies have been mostly system specific, and use a few QNMs to provide approximate descriptions. Here we review recent developments which aim at a unifying treatment. The formulation leads to a mathematical structure in close analogy to that in conservative, hermitian systems. Many of the mathematical tools for the latter can hence be transcribed. Emphasis is placed on those cases in which the QNMs form a complete set for outgoing wavefunctions, so that in principle all the QNMs together give an exact description of the dynamics. Applications to optics in microspheres and ...

  17. Standard-Cell, Open-Architecture Power Conversion Systems

    Science.gov (United States)

    2005-10-01

    energy storage equations-integral I Packaged Components 1 M l a transistors , inductors, capacitors, Maxwell equations heat sinks,.. I Devices Maxwell...energy flow control and C energy storage r I Packaged Components 1 transistors , inductors, capacitors, heat sinks, r Devices 1 semiconductors...The approach to PEBB interface characterization is based on existing plug and play ( PnP ) PEBB hardware in order to facilitate easy characterization

  18. Prototyping of an Open-Architecture CMG System

    Science.gov (United States)

    2012-12-01

    components 20 (such as the motor and the duplex bearing), were then designed and modeled using Siemens NX 7.5 computer-aided design (CAD) modeling tool. The...Figure 12. Current momentum wheel CAD model and dimensions The MOI of the momentum wheel was obtained NX I-DEAS 6.1. The maximum angular momentum was...63. Final prototype rotor assembly The MOI and angular momentum for the complete rotor assembly was calculated using NX I-DEAS 6.1 and the maximum

  19. Terra Harvest Open Architecture Standard for Unattended Systems

    Science.gov (United States)

    2013-09-01

    Common Sensor Radio (1), Iridium, Broadband Global Area Network [ BGAN ], etc.) registered as communication services. An asset (sensor...2011. 13 List of Symbols, Abbreviations, and Acronyms APIs application programming interfaces BGAN Broadband Global Area Network DIA

  20. An Open Architecture for Defense Virtual Environment Training Systems

    Science.gov (United States)

    2003-09-01

    Miller (USN) 5. FUNDING NUMBERS 7. PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) Naval Postgraduate School Monterey, CA 93943-5000 8...MASTER OF SCIENCE IN COMPUTER SCIENCE from the NAVAL POSTGRADUATE SCHOOL September 2003 Authors: Stephen W. Matthews... Shiphandling Simulation Training by Marine Safety International ...........................................................................22 d) Air Traffic

  1. A sensor management architecture concept for monitoring emissions from open-air demil operations.

    Energy Technology Data Exchange (ETDEWEB)

    Johnson, Michael M.; Robinson, Jerry D.; Stoddard, Mary Clare; Horn, Brent A.; Lipkin, Joel; Foltz, Greg W.

    2005-09-01

    Sandia National Laboratories, CA proposed a sensor concept to detect emissions from open-burning/open-detonation (OB/OD) events. The system would serve two purposes: (1) Provide data to demilitarization operations about process efficiency, allowing process optimization for cleaner emissions and higher efficiency. (2) Provide data to regulators and neighboring communities about materials dispersing into the environment by OB/OD operations. The proposed sensor system uses instrument control hardware and data visualization software developed at Sandia National Laboratories to link together an array of sensors to monitor emissions from OB/OD events. The suite of sensors would consist of various physical and chemical detectors mounted on stationary or mobile platforms. The individual sensors would be wirelessly linked to one another and controlled through a central command center. Real-time data collection from the sensors, combined with integrated visualization of the data at the command center, would allow for feedback to the sensors to alter operational conditions to adjust for changing needs (i.e., moving plume position, increased spatial resolution, increased sensitivity). This report presents a systems study of the problem of implementing a sensor system for monitoring OB/OD emissions. The goal of this study was to gain a fuller understanding of the political, economic, and technical issues for developing and fielding this technology.

  2. PBSNG—Batch System for Farm Architecture

    Institute of Scientific and Technical Information of China (English)

    J.Fromm; K.Genser; 等

    2001-01-01

    FBSNG [1] is a redesigned version of Farm Batch System (FBS[1]),which was developed as a batch process management system for off-line Run II data processing at FNAL.FBSNG is designed for UNIX computer farms and is capable of managing up to 1000 nodes in a single farm.FBSNG allows users to start arrays of parallel processes on one or more farm computers,It uses a simplified abstract resource counting method for load balancing between computers.The resource counting approach allows FBSNG to be a simple and flexible tool for farm resource management.FBSNG scheduler features include guaranteed and controllable” fair-share” scheduling.FBSNG is easily portable across different flavors of UNIX.The system has been successfully used at Fermilab as well as by off-site collaborators for several years on farms of different sizes and different platforms for off-line data processing,Monte-Carlo data generation and other tasks.

  3. Rethinking Enterprise Architecture for Sustainable Energy System Development

    Institute of Scientific and Technical Information of China (English)

    Jovita Vasauskaite; Asif Qumer Gill

    2015-01-01

    Abstract-The development of a sustainable energy system throughout an enterprise is a complex task, which requires an agile holistic approach. Such an approach needs to include a variety of objectives including energy strategy formation and strategic decision-making, which are directly related to the analysis and management of the main areas of sustainable development: The economic, technological, environmental, and social. These multidimensional requirements of sustainability are often difficult to achieve within the enterprise, because these aspects are interrelated and influenced by various internal and external environment factors. This paper first reviews the main challenges for an energy system, and then demonstrates how a strategic agile enterprise architecture driven approach could effectively guide the sustainable energy system development. The study presented in this paper provides a holistic approach that contributes to the advancement and usage of literature dealing with issues of sustainable energy system development and agile enterprise architecture, which has not been discussed before to any great extent.

  4. A Proposed Information Architecture for Telehealth System Interoperability

    Energy Technology Data Exchange (ETDEWEB)

    Craft, R.L.; Funkhouser, D.R.; Gallagher, L.K.; Garica, R.J.; Parks, R.C.; Warren, S.

    1999-04-20

    We propose an object-oriented information architecture for telemedicine systems that promotes secure `plug-and-play' interaction between system components through standardized interfaces, communication protocols, messaging formats, and data definitions. In this architecture, each component functions as a black box, and components plug together in a ''lego-like'' fashion to achieve the desired device or system functionality. Introduction Telemedicine systems today rely increasingly on distributed, collaborative information technology during the care delivery process. While these leading-edge systems are bellwethers for highly advanced telemedicine, most are custom-designed and do not interoperate with other commercial offerings. Users are limited to a set of functionality that a single vendor provides and must often pay high prices to obtain this functionality, since vendors in this marketplace must deliver en- tire systems in order to compete. Besides increasing corporate research and development costs, this inhibits the ability of the user to make intelligent purchasing decisions regarding best-of-breed technologies. This paper proposes a reference architecture for plug-and-play telemedicine systems that addresses these issues.

  5. A Proposed Information Architecture for Telehealth System Interoperability

    Energy Technology Data Exchange (ETDEWEB)

    Warren, S.; Craft, R.L.; Parks, R.C.; Gallagher, L.K.; Garcia, R.J.; Funkhouser, D.R.

    1999-04-07

    Telemedicine technology is rapidly evolving. Whereas early telemedicine consultations relied primarily on video conferencing, consultations today may utilize video conferencing, medical peripherals, store-and-forward capabilities, electronic patient record management software, and/or a host of other emerging technologies. These remote care systems rely increasingly on distributed, collaborative information technology during the care delivery process, in its many forms. While these leading-edge systems are bellwethers for highly advanced telemedicine, the remote care market today is still immature. Most telemedicine systems are custom-designed and do not interoperate with other commercial offerings. Users are limited to a set of functionality that a single vendor provides and must often pay high prices to obtain this functionality, since vendors in this marketplace must deliver entire systems in order to compete. Besides increasing corporate research and development costs, this inhibits the ability of the user to make intelligent purchasing decisions regarding best-of-breed technologies. We propose a secure, object-oriented information architecture for telemedicine systems that promotes plug-and-play interaction between system components through standardized interfaces, communication protocols, messaging formats, and data definitions. In this architecture, each component functions as a black box, and components plug together in a lego-like fashion to achieve the desired device or system functionality. The architecture will support various ongoing standards work in the medical device arena.

  6. Open Source CRM Systems for SMEs

    CERN Document Server

    Tereso, Marco

    2011-01-01

    Customer Relationship Management (CRM) systems are very common in large companies. However, CRM systems are not very common in Small and Medium Enterprises (SMEs). Most SMEs do not implement CRM systems due to several reasons, such as lack of knowledge about CRM or lack of financial resources to implement CRM systems. SMEs have to start implementing Information Systems (IS) technology into their business operations in order to improve business values and gain more competitive advantage over rivals. CRM system has the potential to help improve the business value and competitive capabilities of SMEs. Given the high fixed costs of normal activity of companies, we intend to promote free and viable solutions for small and medium businesses. In this paper, we explain the reasons why SMEs do not implement CRM system and the benefits of using open source CRM system in SMEs. We also describe the functionalities of top open source CRM systems, examining the applicability of these tools in fitting the needs of SMEs.

  7. A generalized fidelity amplitude for open systems.

    Science.gov (United States)

    Gorin, T; Moreno, H J; Seligman, T H

    2016-06-13

    We consider a central system which is coupled via dephasing to an open system, i.e. an intermediate system which in turn is coupled to another environment. Considering the intermediate and far environment as one composite system, the coherences in the central system are given in the form of fidelity amplitudes for a certain perturbed echo dynamics in the composite environment. On the basis of the Born-Markov approximation, we derive a master equation for the reduction of that dynamics to the intermediate system alone. In distinction to an earlier paper (Moreno et al 2015 Phys. Rev. A 92, 030104. (doi:10.1103/PhysRevA.92.030104)), where we discussed the stabilizing effect of the far environment on the decoherence in the central system, we focus here on the possibility of using the measurable coherences in the central system for probing the open quantum dynamics in the intermediate system. We illustrate our results for the case of chaotic dynamics in the near environment, where we compare random matrix simulations with our analytical result.

  8. System Architecture Modeling for Technology Portfolio Management using ATLAS

    Science.gov (United States)

    Thompson, Robert W.; O'Neil, Daniel A.

    2006-01-01

    Strategic planners and technology portfolio managers have traditionally relied on consensus-based tools, such as Analytical Hierarchy Process (AHP) and Quality Function Deployment (QFD) in planning the funding of technology development. While useful to a certain extent, these tools are limited in the ability to fully quantify the impact of a technology choice on system mass, system reliability, project schedule, and lifecycle cost. The Advanced Technology Lifecycle Analysis System (ATLAS) aims to provide strategic planners a decision support tool for analyzing technology selections within a Space Exploration Architecture (SEA). Using ATLAS, strategic planners can select physics-based system models from a library, configure the systems with technologies and performance parameters, and plan the deployment of a SEA. Key parameters for current and future technologies have been collected from subject-matter experts and other documented sources in the Technology Tool Box (TTB). ATLAS can be used to compare the technical feasibility and economic viability of a set of technology choices for one SEA, and compare it against another set of technology choices or another SEA. System architecture modeling in ATLAS is a multi-step process. First, the modeler defines the system level requirements. Second, the modeler identifies technologies of interest whose impact on an SEA. Third, the system modeling team creates models of architecture elements (e.g. launch vehicles, in-space transfer vehicles, crew vehicles) if they are not already in the model library. Finally, the architecture modeler develops a script for the ATLAS tool to run, and the results for comparison are generated.

  9. Architecture for Combined Energy and Attitude Control System

    OpenAIRE

    Ibrahim M. Mehedi; Renuganth Varatharajoo; Harlisya Harun; Mohd N. Filipski

    2005-01-01

    Combining the energy and attitude control system is a feasible technology for small satellites to improve the space missions. In this Combined Energy and Attitude Control System (CEACS) a double rotating flywheel is used to replace the conventional battery for energy storage as well as to control the attitude of an earth oriented satellite. Each flywheel is to be controlled in the torque mode. The energy and attitude inputs for the flywheels' control architecture are also ...

  10. Robotic control architecture development for automated nuclear material handling systems

    Energy Technology Data Exchange (ETDEWEB)

    Merrill, R.D.; Hurd, R.; Couture, S.; Wilhelmsen, K.

    1995-02-01

    Lawrence Livermore National Laboratory (LLNL) is engaged in developing automated systems for handling materials for mixed waste treatment, nuclear pyrochemical processing, and weapon components disassembly. In support of these application areas there is an extensive robotic development program. This paper will describe the portion of this effort at LLNL devoted to control system architecture development, and review two applications currently being implemented which incorporate these technologies.

  11. Architectural Analysis of a LLNL LWIR Sensor System

    Energy Technology Data Exchange (ETDEWEB)

    Bond, Essex J. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Curry, Jim R. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); LaFortune, Kai N. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Williams, Alicia M. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

    2013-11-26

    The architecture of an LLNL airborne imaging and detection system is considered in this report. The purpose of the system is to find the location of substances of interest by detecting their chemical signatures using a long-wave infrared (LWIR) imager with geo-registration capability. The detection system consists of an LWIR imaging spectrometer as well as a network of computer hardware and analysis software for analyzing the images for the features of interest. The system has been in the operations phase now for well over a year, and as such, there is enough use data and feedback from the primary beneficiary to assess the current successes and shortcomings of the LWIR system architecture. LWIR system has been successful in providing reliable data collection and the delivery of a report with results. The weakness of the architecture has been identified in two areas: with the network of computer hardware and software and with the feedback of the state of the system health. Regarding the former, the system computers and software that carry out the data acquisition are too complicated for routine operations and maintenance. With respect to the latter, the primary beneficiary of the instrument’s data does not have enough metrics to use to filter the large quantity of data to determine its utility. In addition to the needs in these two areas, a latent need of one of the stakeholders is identified. This report documents the strengths and weaknesses, as well as proposes a solution for enhancing the architecture that simultaneously addresses the two areas of weakness and leverages them to meet the newly identified latent need.

  12. Toward autonomous driving: The CMU Navlab. II - Architecture and systems

    Science.gov (United States)

    Thorpe, Charles; Hebert, Martial; Kanade, Takeo; Shafer, Steven

    1991-01-01

    A description is given of EDDIE, the architecture for the Navlab mobile robot which provides a toolkit for building specific systems quickly and easily. Included in the discussion are the annotated maps used by EDDIE and the Navlab's road-following system, called the Autonomous Mail Vehicle, which was built using EDDIE and its annotated maps as a basis. The contributions of the Navlab project and the lessons learned from it are examined.

  13. Flexible Architecture for FPGAs in Embedded Systems

    Science.gov (United States)

    Clark, Duane I.; Lim, Chester N.

    2012-01-01

    Commonly, field-programmable gate arrays (FPGAs) being developed in cPCI embedded systems include the bus interface in the FPGA. This complicates the development because the interface is complicated and requires a lot of development time and FPGA resources. In addition, flight qualification requires a substantial amount of time be devoted to just this interface. Another complication of putting the cPCI interface into the FPGA being developed is that configuration information loaded into the device by the cPCI microprocessor is lost when a new bit file is loaded, requiring cumbersome operations to return the system to an operational state. Finally, SRAM-based FPGAs are typically programmed via specialized cables and software, with programming files being loaded either directly into the FPGA, or into PROM devices. This can be cumbersome when doing FPGA development in an embedded environment, and does not have an easy path to flight. Currently, FPGAs used in space applications are usually programmed via multiple space-qualified PROM devices that are physically large and require extra circuitry (typically including a separate one-time programmable FPGA) to enable them to be used for this application. This technology adds a cPCI interface device with a simple, flexible, high-performance backend interface supporting multiple backend FPGAs. It includes a mechanism for programming the FPGAs directly via the microprocessor in the embedded system, eliminating specialized hardware, software, and PROM devices and their associated circuitry. It has a direct path to flight, and no extra hardware and minimal software are required to support reprogramming in flight. The device added is currently a small FPGA, but an advantage of this technology is that the design of the device does not change, regardless of the application in which it is being used. This means that it needs to be qualified for flight only once, and is suitable for one-time programmable devices or an application

  14. Generic architecture for a management system of ASON

    Science.gov (United States)

    Tian, Guang-Li; Li, Guangcheng

    2005-02-01

    An ASTN (Automatic Switched Transport Network) enhances the traditional transport network by a control plane. The control plane implements signalling and routing mechanisms that allow the automatic configuration of end-to-end connections on client requests. Consequently the management of ASTNs requires integrated management of the control plane layer and the underlying transport network. This article describes a generic architecture for ASON management systems tuned to this requirement. The centre piece of this architecture is a generic CORBA network level interface which allows an easy integration of several layer networks and different administrative domains. In order to evaluate this architecture it will be implemented for an IP over ASON (Automatic Switched Optical Network) field trial developed within the Fiberhome Telecommunication Technologies. The ASON management system is designed for a multi-vendor, multi-technology, and multi-domain environment. This contribution gives a description of the architectural concepts used, the existing frameworks adopted, the design of the network level interface, and experiences made during implementation of the concepts for the Fiberhome Telecommunication Technologies field trial.

  15. Comparison of Communication Architectures for Spacecraft Modular Avionics Systems

    Science.gov (United States)

    Gwaltney, D. A.; Briscoe, J. M.

    2006-01-01

    This document is a survey of publicly available information concerning serial communication architectures used, or proposed to be used, in aeronautic and aerospace applications. It focuses on serial communication architectures that are suitable for low-latency or real-time communication between physically distributed nodes in a system. Candidates for the study have either extensive deployment in the field, or appear to be viable for near-term deployment. Eleven different serial communication architectures are considered, and a brief description of each is given with the salient features summarized in a table in appendix A. This survey is a product of the Propulsion High Impact Avionics Technology (PHIAT) Project at NASA Marshall Space Flight Center (MSFC). PHIAT was originally funded under the Next Generation Launch Technology (NGLT) Program to develop avionics technologies for control of next generation reusable rocket engines. After the announcement of the Space Exploration Initiative, the scope of the project was expanded to include vehicle systems control for human and robotics missions. As such, a section is included presenting the rationale used for selection of a time-triggered architecture for implementation of the avionics demonstration hardware developed by the project team

  16. PyFR: An Open Source Framework for Solving Advection-Diffusion Type Problems on Streaming Architectures using the Flux Reconstruction Approach

    CERN Document Server

    Witherden, Freddie D; Vincent, Peter E

    2013-01-01

    High-order numerical methods for unstructured grids combine the superior accuracy of high-order spectral or finite difference methods with the geometric flexibility of low-order finite volume or finite element schemes. The Flux Reconstruction (FR) approach unifies various high-order schemes for unstructured grids within a single framework. Additionally, the FR approach exhibits a significant degree of element locality, and is thus able to run efficiently on modern streaming architectures, such as Graphical Processing Units (GPUs). The aforementioned properties of FR mean it offers a promising route to performing affordable, and hence industrially relevant, scale-resolving simulations of hitherto intractable unsteady flows within the vicinity of real-world engineering geometries. In this paper we present PyFR, an open-source Python based framework for solving advection-diffusion type problems on streaming architectures using the FR approach. The framework is designed to solve a range of governing systems on mi...

  17. Next Generation Image-Based Phenotyping of Root System Architecture

    Science.gov (United States)

    Davis, T. W.; Shaw, N. M.; Cheng, H.; Larson, B. G.; Craft, E. J.; Shaff, J. E.; Schneider, D. J.; Piñeros, M. A.; Kochian, L. V.

    2016-12-01

    The development of the Plant Root Imaging and Data Acquisition (PRIDA) hardware/software system enables researchers to collect digital images, along with all the relevant experimental details, of a range of hydroponically grown agricultural crop roots for 2D and 3D trait analysis. Previous efforts of image-based root phenotyping focused on young cereals, such as rice; however, there is a growing need to measure both older and larger root systems, such as those of maize and sorghum, to improve our understanding of the underlying genetics that control favorable rooting traits for plant breeding programs to combat the agricultural risks presented by climate change. Therefore, a larger imaging apparatus has been prototyped for capturing 3D root architecture with an adaptive control system and innovative plant root growth media that retains three-dimensional root architectural features. New publicly available multi-platform software has been released with considerations for both high throughput (e.g., 3D imaging of a single root system in under ten minutes) and high portability (e.g., support for the Raspberry Pi computer). The software features unified data collection, management, exploration and preservation for continued trait and genetics analysis of root system architecture. The new system makes data acquisition efficient and includes features that address the needs of researchers and technicians, such as reduced imaging time, semi-automated camera calibration with uncertainty characterization, and safe storage of the critical experimental data.

  18. Open cycle cooling systems using solar energy

    Energy Technology Data Exchange (ETDEWEB)

    Lazzarin, R.; Sovrano, M.

    Open cycle cooling systems are particularly suitable for utilizing solar energy. In all these systems the adsorption and absorption phenomena are very important, hence they are described separately. The cycles used are essentially two: the Baum-Kakabaev cycle using liquid absorbers and the dehumidification/humidification cycle where also adsorbent substances can be utilized. Solar energy is used in the regeneration process of dehumidifying substances. Reactivation modes can be various: suitability of one mode or the other can depend on the climate of the site where the system is installed.

  19. Architectural Analysis of Complex Evolving Systems of Systems

    Science.gov (United States)

    Lindvall, Mikael; Stratton, William C.; Sibol, Deane E.; Ray, Arnab; Ackemann, Chris; Yonkwa, Lyly; Ganesan, Dharma

    2009-01-01

    The goal of this collaborative project between FC-MD, APL, and GSFC and supported by NASA IV&V Software Assurance Research Program (SARP), was to develop a tool, Dynamic SAVE, or Dyn-SAVE for short, for analyzing architectures of systems of systems. The project team was comprised of the principal investigator (PI) from FC-MD and four other FC-MD scientists (part time) and several FC-MD students (full time), as well as, two APL software architects (part time), and one NASA POC (part time). The PI and FC-MD scientists together with APL architects were responsible for requirements analysis, and for applying and evaluating the Dyn-SAVE tool and method. The PI and a group of FC-MD scientists were responsible for improving the method and conducting outreach activities, while another group of FC-MD scientists were responsible for development and improvement of the tool. Oversight and reporting was conducted by the PI and NASA POC. The project team produced many results including several prototypes of the Dyn-SAVE tool and method, several case studies documenting how the tool and method was applied to APL s software systems, and several published papers in highly respected conferences and journals. Dyn-SAVE as developed and enhanced throughout this research period, is a software tool intended for software developers and architects, software integration testers, and persons who need to analyze software systems from the point of view of how it communicates with other systems. Using the tool, the user specifies the planned communication behavior of the system modeled as a sequence diagram. The user then captures and imports the actual communication behavior of the system, which is then converted and visualized as a sequence diagram by Dyn-SAVE. After mapping the planned to the actual and specifying parameter and timing constraints, Dyn-SAVE detects and highlights deviations between the planned and the actual behavior. Requirements based on the need to analyze two inter-system

  20. E-health and healthcare enterprise information system leveraging service-oriented architecture.

    Science.gov (United States)

    Hsieh, Sung-Huai; Hsieh, Sheau-Ling; Cheng, Po-Hsun; Lai, Feipei

    2012-04-01

    To present the successful experiences of an integrated, collaborative, distributed, large-scale enterprise healthcare information system over a wired and wireless infrastructure in National Taiwan University Hospital (NTUH). In order to smoothly and sequentially transfer from the complex relations among the old (legacy) systems to the new-generation enterprise healthcare information system, we adopted the multitier framework based on service-oriented architecture to integrate the heterogeneous systems as well as to interoperate among many other components and multiple databases. We also present mechanisms of a logical layer reusability approach and data (message) exchange flow via Health Level 7 (HL7) middleware, DICOM standard, and the Integrating the Healthcare Enterprise workflow. The architecture and protocols of the NTUH enterprise healthcare information system, especially in the Inpatient Information System (IIS), are discussed in detail. The NTUH Inpatient Healthcare Information System is designed and deployed on service-oriented architecture middleware frameworks. The mechanisms of integration as well as interoperability among the components and the multiple databases apply the HL7 standards for data exchanges, which are embedded in XML formats, and Microsoft .NET Web services to integrate heterogeneous platforms. The preliminary performance of the current operation IIS is evaluated and analyzed to verify the efficiency and effectiveness of the designed architecture; it shows reliability and robustness in the highly demanding traffic environment of NTUH. The newly developed NTUH IIS provides an open and flexible environment not only to share medical information easily among other branch hospitals, but also to reduce the cost of maintenance. The HL7 message standard is widely adopted to cover all data exchanges in the system. All services are independent modules that enable the system to be deployed and configured to the highest degree of flexibility

  1. An Architecture for Context-Aware Knowledge Flow Management Systems

    CERN Document Server

    Jarrahi, Ali

    2012-01-01

    The organizational knowledge is one of the most important and valuable assets of organizations. In such environment, organizations with broad, specialized and up-to-date knowledge, adequately using knowledge resources, will be more successful than their competitors. For effective use of knowledge, dynamic knowledge flow from the sources to destinations is essential. In this regard, a novel complex concept in knowledge management is the analysis, design and implementation of knowledge flow management systems. One of the major challenges in such systems is to explore the knowledge flow from the source to the recipient and control the flow for quality improvements concerning the users' needs as possible. Therefore, the purpose of this paper is to provide an architecture in order to solve this challenge. For this purpose, in addition to the architecture for knowledge flow management systems, a new node selection strategy is provided with higher success rate compared to previous strategies.

  2. Integrating Environmental and Information Systems Management: An Enterprise Architecture Approach

    Science.gov (United States)

    Noran, Ovidiu

    Environmental responsibility is fast becoming an important aspect of strategic management as the reality of climate change settles in and relevant regulations are expected to tighten significantly in the near future. Many businesses react to this challenge by implementing environmental reporting and management systems. However, the environmental initiative is often not properly integrated in the overall business strategy and its information system (IS) and as a result the management does not have timely access to (appropriately aggregated) environmental information. This chapter argues for the benefit of integrating the environmental management (EM) project into the ongoing enterprise architecture (EA) initiative present in all successful companies. This is done by demonstrating how a reference architecture framework and a meta-methodology using EA artefacts can be used to co-design the EM system, the organisation and its IS in order to achieve a much needed synergy.

  3. Reconfigurable architecture for MIMO systems based on CORDIC operators

    Science.gov (United States)

    Wang, Hongzhi; Leray, Pierre; Palicot, Jacques

    2006-09-01

    The MIMO system is an attractive technology for wireless 3G/4G systems. In this article we propose the realization on FPGA of a MIMO 'V-BLAST Square Root' algorithm based on a variable number of CORDIC operators. The CORDIC operator is highly suitable for this implementation as it only relies on simple techniques of addition and vector offsets. This square root algorithm architecture is reconfigurable in order to adapt itself to different numbers of antennas and different data rates. The proposed architecture can achieve a data rate of 600 Mbit/s in a Virtex-II FPGA circuit from Xilinx for the MIMO system with QPSK modulation. To cite this article: H. Wang et al., C. R. Physique 7 (2006).

  4. Service-Oriented Architecture for Space Exploration Robotic Rover Systems

    CERN Document Server

    Bassil, Youssef

    2012-01-01

    Currently, industrial sectors are transforming their business processes into e-services and component-based architectures to build flexible, robust, and scalable systems, and reduce integration-related maintenance and development costs. Robotics is yet another promising and fast-growing industry that deals with the creation of machines that operate in an autonomous fashion and serve for various applications including space exploration, weaponry, laboratory research, and manufacturing. It is in space exploration that the most common type of robots is the planetary rover which moves across the surface of a planet and conducts a thorough geological study of the celestial surface. This type of rover system is still ad-hoc in that it incorporates its software into its core hardware making the whole system cohesive, tightly-coupled, more susceptible to shortcomings, less flexible, hard to be scaled and maintained, and impossible to be adapted to other purposes. This paper proposes a service-oriented architecture fo...

  5. Software Defined Radios - Architectures, Systems and Functions

    Science.gov (United States)

    Sims, Herb

    2017-01-01

    Software Defined Radio is an industry term describing a method of utilizing a minimum amount of Radio Frequency (RF)/analog electronics before digitization takes place. Upon digitization all other functions are performed in software/firmware. There are as many different types of SDRs as there are data systems. Software Defined Radio (SDR) technology has been proven in the commercial sector since the early 90's. Today's rapid advancement in mobile telephone reliability and power management capabilities exemplifies the effectiveness of the SDR technology for the modern communications market. In contrast the foundations of transponder technology presently qualified for satellite applications were developed during the early space program of the 1960's. SDR technology offers potential to revolutionize satellite transponder technology by increasing science data through-put capability by at least an order of magnitude. While the SDR is adaptive in nature and is "One-size-fits-all" by design, conventional transponders are built to a specific platform and must be redesigned for every new bus. The SDR uses a minimum amount of analog/Radio Frequency components to up/down-convert the RF signal to/from a digital format. Once analog data is digitized, all processing is performed using hardware logic. Typical SDR processes include; filtering, modulation, up/down converting and demodulation. This presentation will show how the emerging SDR market has leveraged the existing commercial sector to provide a path to a radiation tolerant SDR transponder. These innovations will reduce the cost of transceivers, a decrease in power requirements and a commensurate reduction in volume. A second pay-off is the increased flexibility of the SDR by allowing the same hardware to implement multiple transponder types by altering hardware logic - no change of analog hardware is required - all of which can be ultimately accomplished in orbit. This in turn would provide high capability and low cost

  6. Fault tolerant hypercube computer system architecture

    Science.gov (United States)

    Madan, Herb S. (Inventor); Chow, Edward (Inventor)

    1989-01-01

    A fault-tolerant multiprocessor computer system of the hypercube type comprising a hierarchy of computers of like kind which can be functionally substituted for one another as necessary is disclosed. Communication between the working nodes is via one communications network while communications between the working nodes and watch dog nodes and load balancing nodes higher in the structure is via another communications network separate from the first. A typical branch of the hierarchy reporting to a master node or host computer comprises, a plurality of first computing nodes; a first network of message conducting paths for interconnecting the first computing nodes as a hypercube. The first network provides a path for message transfer between the first computing nodes; a first watch dog node; and a second network of message connecting paths for connecting the first computing nodes to the first watch dog node independent from the first network, the second network provides an independent path for test message and reconfiguration affecting transfers between the first computing nodes and the first switch watch dog node. There is additionally, a plurality of second computing nodes; a third network of message conducting paths for interconnecting the second computing nodes as a hypercube. The third network provides a path for message transfer between the second computing nodes; a fourth network of message conducting paths for connecting the second computing nodes to the first watch dog node independent from the third network. The fourth network provides an independent path for test message and reconfiguration affecting transfers between the second computing nodes and the first watch dog node; and a first multiplexer disposed between the first watch dog node and the second and fourth networks for allowing the first watch dog node to selectively communicate with individual ones of the computing nodes through the second and fourth networks; as well as, a second watch dog node

  7. New optical architecture for holographic data storage system compatible with Blu-ray Disc™ system

    Science.gov (United States)

    Shimada, Ken-ichi; Ide, Tatsuro; Shimano, Takeshi; Anderson, Ken; Curtis, Kevin

    2014-02-01

    A new optical architecture for holographic data storage system which is compatible with a Blu-ray Disc™ (BD) system is proposed. In the architecture, both signal and reference beams pass through a single objective lens with numerical aperture (NA) 0.85 for realizing angularly multiplexed recording. The geometry of the architecture brings a high affinity with an optical architecture in the BD system because the objective lens can be placed parallel to a holographic medium. Through the comparison of experimental results with theory, the validity of the optical architecture was verified and demonstrated that the conventional objective lens motion technique in the BD system is available for angularly multiplexed recording. The test-bed composed of a blue laser system and an objective lens of the NA 0.85 was designed. The feasibility of its compatibility with BD is examined through the designed test-bed.

  8. Reconfigurable Hardware Architecture for Network Intrusion Detection System

    Directory of Open Access Journals (Sweden)

    A. Kaleel Rahuman

    2012-01-01

    Full Text Available Intrusion rule processing in reconfigurable hardware enables intrusion detection and prevention. The use of reconfigurable hardware for network security applications has great strides as Field Programmable Gate Array (FPGA devices have provided larger and faster resources. This proposes architecture called “BV-TCAM” is presented, which is implemented for an FPGA-based Network Intrusion Detection Systems (NIDS. The BV-TCAM architecture combines the Ternary Content Addressable Memory (TCAM and Bit Vector (BV algorithm to effectively compress the data representation and throughput. A tree bitmap implementation of the BV algorithm is used for source and destination port lookup while a TCAM performs lookup for other header fields, which can be represented as a prefix or exact value. With the aid of small embedded TCAM, packet classification can be implemented in relatively small part of the available logic of an FPGA. The BV-TCAM architecture has been modelled by VHDL. Simulations were performed by MODELSIM. This architecture have to be synthesized and implement our design using Xilinx FPGA device."

  9. The Architecture of an Intuitive Scientific Workflow System for Spatial Planning

    Directory of Open Access Journals (Sweden)

    Tiberiu Florescu

    2018-06-01

    Full Text Available In recent years, the quantity of open data has multiplied dramatically. This newly found wealth of data has raised a number of issues for any research exercise within the field of spatial planning: underpowered traditional tools and methods, difficulties in tracking data, transparency issues, sharing difficulties and, above all, an erratic workflow. Some new research tools to counter this irksome tendency do exist at the moment, but, unfortunately, we feel that there is still ample room for improvement. We have therefore commenced the development of our own research instrument, based on the Scientific Workflow System concept. This paper lays the foundation for its architecture. Once completed, both the instrument and the resulting data shall be freely available, truthful to the spirit of the open source and open data tradition. We strongly believe that spatial planning professionals and researchers might find it interesting and worthwhile for increasing the quality and speed of their work.

  10. An overview to Software Architecture in Intrusion Detection System

    CERN Document Server

    Bahrami, Mehdi

    2012-01-01

    Network intrusion detection systems provide proactive defense against security threats by detecting and blocking attack-related traffic. This task can be highly complex, and therefore, software based network intrusion detection systems have difficulty in handling high speed links. This paper reviews of many type of software architecture in intrusion detection systems and describes the design and implementation of a high-performance network intrusion detection system that combines the use of software-based network intrusion detection sensors and a network processor board. The network processor acts as a customized load balancing splitter that cooperates with a set of modified content-based network intrusion detection sensors in processing network traffic.

  11. Wireless coordinated multicell systems architectures and precoding designs

    CERN Document Server

    Nguyen, Duy H N

    2014-01-01

    This SpringerBrief discusses the current research on coordinated multipoint transmission/reception (CoMP) in wireless multi-cell systems. This book analyzes the structure of the CoMP precoders and the message exchange mechanism in the CoMP system in order to reveal the advantage of CoMP. Topics include interference management in wireless cellular networks, joint signal processing, interference coordination, uplink and downlink precoding and system models. After an exploration of the motivations and concepts of CoMP, the authors present the architectures of a CoMP system. Practical implementati

  12. Architecture analysis of the simplified libration point satellite navigation system

    Science.gov (United States)

    Zhang, Lei; Xu, Bo

    2016-10-01

    The libration point satellite navigation system is a novel navigation architecture that consists of satellites located in periodic orbits around the Earth-Moon libration points. Superiorities of the proposed system lie in its autonomy and extended navigation capability, which have been proved in our previous works. Based on the candidate architectures obtained before, a detailed analysis of the simplified libration point satellite navigation system, i.e. the Earth-Moon L1,2 two-satellite constellation, is conducted in this work. Firstly, relation between orbits amplitude is derived for the candidate two-satellite constellations to ensure continuous crosslink measurements between libration point satellites. Then, with the use of a reference lunar exploration mission scenario, navigation performances of different constellation configurations are evaluated by Monte-Carlo simulations. The simulation results indicate that the amplitude and initial phase combinations of libration point orbits have direct effect on the performance of the two-satellite constellations. By using a cooperative evolutionary algorithm for configuration parameter optimization, some optimal constellations are finally obtained for the simplified navigation architecture. The results obtained in this paper may be a reference for future system design.

  13. Open Source Dataturbine (OSDT) Android Sensorpod in Environmental Observing Systems

    Science.gov (United States)

    Fountain, T. R.; Shin, P.; Tilak, S.; Trinh, T.; Smith, J.; Kram, S.

    2014-12-01

    The OSDT Android SensorPod is a custom-designed mobile computing platform for assembling wireless sensor networks for environmental monitoring applications. Funded by an award from the Gordon and Betty Moore Foundation, the OSDT SensorPod represents a significant technological advance in the application of mobile and cloud computing technologies to near-real-time applications in environmental science, natural resources management, and disaster response and recovery. It provides a modular architecture based on open standards and open-source software that allows system developers to align their projects with industry best practices and technology trends, while avoiding commercial vendor lock-in to expensive proprietary software and hardware systems. The integration of mobile and cloud-computing infrastructure represents a disruptive technology in the field of environmental science, since basic assumptions about technology requirements are now open to revision, e.g., the roles of special purpose data loggers and dedicated site infrastructure. The OSDT Android SensorPod was designed with these considerations in mind, and the resulting system exhibits the following characteristics - it is flexible, efficient and robust. The system was developed and tested in the three science applications: 1) a fresh water limnology deployment in Wisconsin, 2) a near coastal marine science deployment at the UCSD Scripps Pier, and 3) a terrestrial ecological deployment in the mountains of Taiwan. As part of a public education and outreach effort, a Facebook page with daily ocean pH measurements from the UCSD Scripps pier was developed. Wireless sensor networks and the virtualization of data and network services is the future of environmental science infrastructure. The OSDT Android SensorPod was designed and developed to harness these new technology developments for environmental monitoring applications.

  14. Schrodinger Equation for an Open System

    Institute of Scientific and Technical Information of China (English)

    毕桥; H.E.Ruda

    2002-01-01

    We present a Schrodinger (Liouville) type of equation for a quantum open system. It has a correlated part, and various master equations may be its special cases. It also has significant applications for constructing decoherencefree subspace for quantum computation. It is related to the original Schrodinger (Liouville) equation for the total system through a non-unitary similarity transformation. It is unnecessary for its correlated part to be self-adjoint,so there is a complex spectrum for the corresponding Hamiltonian (Liouvillian), which enables the time evolution of states to be asymmetric. This shows just the correlation to produce evolution of world.

  15. Developing Open Source System Expertise in Europe

    DEFF Research Database (Denmark)

    Nyborg, Mads; Gustafsson, Finn; Christensen, Jørgen Erik

    2011-01-01

    are interested in knowing which factors play a role in information systems and what the similarities and differences between the various national approaches in open source software systems and techniques are. The event forms a unique opportunity in promoting active learning in an international environment....... Students get experience working in teams across country boundaries. In the paper we will describe the structure and our experiences from participating in this IP with relation to the CDIO initiative. Finally we draw conclusions and give our recommendations based on those....

  16. Effective operator formalism for open quantum systems

    DEFF Research Database (Denmark)

    Reiter, Florentin; Sørensen, Anders Søndberg

    2012-01-01

    We present an effective operator formalism for open quantum systems. Employing perturbation theory and adiabatic elimination of excited states for a weakly driven system, we derive an effective master equation which reduces the evolution to the ground-state dynamics. The effective evolution...... involves a single effective Hamiltonian and one effective Lindblad operator for each naturally occurring decay process. Simple expressions are derived for the effective operators which can be directly applied to reach effective equations of motion for the ground states. We compare our method...

  17. Architectural frameworks: defining the structures for implementing learning health systems.

    Science.gov (United States)

    Lessard, Lysanne; Michalowski, Wojtek; Fung-Kee-Fung, Michael; Jones, Lori; Grudniewicz, Agnes

    2017-06-23

    The vision of transforming health systems into learning health systems (LHSs) that rapidly and continuously transform knowledge into improved health outcomes at lower cost is generating increased interest in government agencies, health organizations, and health research communities. While existing initiatives demonstrate that different approaches can succeed in making the LHS vision a reality, they are too varied in their goals, focus, and scale to be reproduced without undue effort. Indeed, the structures necessary to effectively design and implement LHSs on a larger scale are lacking. In this paper, we propose the use of architectural frameworks to develop LHSs that adhere to a recognized vision while being adapted to their specific organizational context. Architectural frameworks are high-level descriptions of an organization as a system; they capture the structure of its main components at varied levels, the interrelationships among these components, and the principles that guide their evolution. Because these frameworks support the analysis of LHSs and allow their outcomes to be simulated, they act as pre-implementation decision-support tools that identify potential barriers and enablers of system development. They thus increase the chances of successful LHS deployment. We present an architectural framework for LHSs that incorporates five dimensions-goals, scientific, social, technical, and ethical-commonly found in the LHS literature. The proposed architectural framework is comprised of six decision layers that model these dimensions. The performance layer models goals, the scientific layer models the scientific dimension, the organizational layer models the social dimension, the data layer and information technology layer model the technical dimension, and the ethics and security layer models the ethical dimension. We describe the types of decisions that must be made within each layer and identify methods to support decision-making. In this paper, we outline

  18. Evolution of System Architectures: Where Do We Need to Fail Next?

    Science.gov (United States)

    Bermudez, Luis; Alameh, Nadine; Percivall, George

    2013-04-01

    Innovation requires testing and failing. Thomas Edison was right when he said "I have not failed. I've just found 10,000 ways that won't work". For innovation and improvement of standards to happen, service Architectures have to be tested and tested. Within the Open Geospatial Consortium (OGC), testing of service architectures has occurred for the last 15 years. This talk will present an evolution of these service architectures and a possible future path. OGC is a global forum for the collaboration of developers and users of spatial data products and services, and for the advancement and development of international standards for geospatial interoperability. The OGC Interoperability Program is a series of hands-on, fast paced, engineering initiatives to accelerate the development and acceptance of OGC standards. Each initiative is organized in threads that provide focus under a particular theme. The first testbed, OGC Web Services phase 1, completed in 2003 had four threads: Common Architecture, Web Mapping, Sensor Web and Web Imagery Enablement. The Common Architecture was a cross-thread theme, to ensure that the Web Mapping and Sensor Web experiments built on a base common architecture. The architecture was based on the three main SOA components: Broker, Requestor and Provider. It proposed a general service model defining service interactions and dependencies; categorization of service types; registries to allow discovery and access of services; data models and encodings; and common services (WMS, WFS, WCS). For the latter, there was a clear distinction on the different services: Data Services (e.g. WMS), Application services (e.g. Coordinate transformation) and server-side client applications (e.g. image exploitation). The latest testbed, OGC Web Service phase 9, completed in 2012 had 5 threads: Aviation, Cross-Community Interoperability (CCI), Security and Services Interoperability (SSI), OWS Innovations and Compliance & Interoperability Testing & Evaluation

  19. Understanding Temporal Logic. Introducing Coherent Object System Architecture (COSA)

    Science.gov (United States)

    2010-04-01

    Ru e tep – False Trace – End preemption control loop • a se e av or – Next False Rule/Step – Trace (unique to app ) www.vsmerlot.com 13 COSA Engine...Coherent Object System Architecture – U.S. Patent #6,345,387 abandoned by inventor – Available to the public in book: Breaking the Time Barrier • BNF

  20. Assessment of the integration capability of system architectures from a complex and distributed software systems perspective

    Science.gov (United States)

    Leuchter, S.; Reinert, F.; Müller, W.

    2014-06-01

    Procurement and design of system architectures capable of network centric operations demand for an assessment scheme in order to compare different alternative realizations. In this contribution an assessment method for system architectures targeted at the C4ISR domain is presented. The method addresses the integration capability of software systems from a complex and distributed software system perspective focusing communication, interfaces and software. The aim is to evaluate the capability to integrate a system or its functions within a system-of-systems network. This method uses approaches from software architecture quality assessment and applies them on the system architecture level. It features a specific goal tree of several dimensions that are relevant for enterprise integration. These dimensions have to be weighed against each other and totalized using methods from the normative decision theory in order to reflect the intention of the particular enterprise integration effort. The indicators and measurements for many of the considered quality features rely on a model based view on systems, networks, and the enterprise. That means it is applicable to System-of-System specifications based on enterprise architectural frameworks relying on defined meta-models or domain ontologies for defining views and viewpoints. In the defense context we use the NATO Architecture Framework (NAF) to ground respective system models. The proposed assessment method allows evaluating and comparing competing system designs regarding their future integration potential. It is a contribution to the system-of-systems engineering methodology.

  1. Space Telecommunications Radio Systems (STRS) Hardware Architecture Standard: Release 1.0 Hardware Section

    Science.gov (United States)

    Reinhart, Richard C.; Kacpura, Thomas J.; Smith, Carl R.; Liebetreu, John; Hill, Gary; Mortensen, Dale J.; Andro, Monty; Scardelletti, Maximilian C.; Farrington, Allen

    2008-01-01

    This report defines a hardware architecture approach for software-defined radios to enable commonality among NASA space missions. The architecture accommodates a range of reconfigurable processing technologies including general-purpose processors, digital signal processors, field programmable gate arrays, and application-specific integrated circuits (ASICs) in addition to flexible and tunable radiofrequency front ends to satisfy varying mission requirements. The hardware architecture consists of modules, radio functions, and interfaces. The modules are a logical division of common radio functions that compose a typical communication radio. This report describes the architecture details, the module definitions, the typical functions on each module, and the module interfaces. Tradeoffs between component-based, custom architecture and a functional-based, open architecture are described. The architecture does not specify a physical implementation internally on each module, nor does the architecture mandate the standards or ratings of the hardware used to construct the radios.

  2. Research on Human Sensory Architecture for Cyber Physical Systems

    Directory of Open Access Journals (Sweden)

    Zhejun Kuang

    2013-09-01

    Full Text Available CPS is complex distributed systems, which contain computing, communications, and control. CPS is a product of the combination of physical world and the cyber world. The cyber world needs a lot of physical equipment to deal with perception and communication, then collect and transfer the information in the real environment, and by computation to forecast what might happen in future real environment, at last through the control strategy to achieve the optimal solution. In short, cyber physical system is the complex systems combination with computation system, sensory system and control system. Cyber physical system through more extensive connection, the physical world more thorough cognition, more effectively control the physical world, make the information world and the physical world closer integration, realize coordination awareness and control of the physical world. The paper through the analysis of the human perception system, build a cyber-physical fusion system based on human perception architecture

  3. Research on Human Sensory Architecture for Cyber Physical Systems

    Directory of Open Access Journals (Sweden)

    Zhejun Kuang

    2013-11-01

    Full Text Available CPS is complex distributed systems, which contain computing, communications, and control. CPS is a product of the combination of physical world and the cyber world. The cyber world needs a lot of physical equipment to deal with perception and communication, then collect and transfer the information in the real environment, and by computation to forecast what might happen in future real environment, at last through the control strategy to achieve the optimal solution. In short, cyber physical system is the complex systems combination with computation system, sensory system and control system. Cyber physical system through more extensive connection, the physical world more thorough cognition, more effectively control the physical world, make the information world and the physical world closer integration, realize coordination awareness and control of the physical world. The paper through the analysis of the human perception system, build a cyber-physical fusion system based on human perception architecture

  4. Quantum state engineering in hybrid open quantum systems

    Science.gov (United States)

    Joshi, Chaitanya; Larson, Jonas; Spiller, Timothy P.

    2016-04-01

    We investigate a possibility to generate nonclassical states in light-matter coupled noisy quantum systems, namely, the anisotropic Rabi and Dicke models. In these hybrid quantum systems, a competing influence of coherent internal dynamics and environment-induced dissipation drives the system into nonequilibrium steady states (NESSs). Explicitly, for the anisotropic Rabi model, the steady state is given by an incoherent mixture of two states of opposite parities, but as each parity state displays light-matter entanglement, we also find that the full state is entangled. Furthermore, as a natural extension of the anisotropic Rabi model to an infinite spin subsystem, we next explored the NESS of the anisotropic Dicke model. The NESS of this linearized Dicke model is also an inseparable state of light and matter. With an aim to enrich the dynamics beyond the sustainable entanglement found for the NESS of these hybrid quantum systems, we also propose to combine an all-optical feedback strategy for quantum state protection and for establishing quantum control in these systems. Our present work further elucidates the relevance of such hybrid open quantum systems for potential applications in quantum architectures.

  5. A Multi-Agent System Architecture for Sensor Networks

    Science.gov (United States)

    Fuentes-Fernández, Rubén; Guijarro, María; Pajares, Gonzalo

    2009-01-01

    The design of the control systems for sensor networks presents important challenges. Besides the traditional problems about how to process the sensor data to obtain the target information, engineers need to consider additional aspects such as the heterogeneity and high number of sensors, and the flexibility of these networks regarding topologies and the sensors in them. Although there are partial approaches for resolving these issues, their integration relies on ad hoc solutions requiring important development efforts. In order to provide an effective approach for this integration, this paper proposes an architecture based on the multi-agent system paradigm with a clear separation of concerns. The architecture considers sensors as devices used by an upper layer of manager agents. These agents are able to communicate and negotiate services to achieve the required functionality. Activities are organized according to roles related with the different aspects to integrate, mainly sensor management, data processing, communication and adaptation to changes in the available devices and their capabilities. This organization largely isolates and decouples the data management from the changing network, while encouraging reuse of solutions. The use of the architecture is facilitated by a specific modelling language developed through metamodelling. A case study concerning a generic distributed system for fire fighting illustrates the approach and the comparison with related work. PMID:22303172

  6. NUClear: A Loosely Coupled Software Architecture for Humanoid Robot Systems

    Directory of Open Access Journals (Sweden)

    Trent eHouliston

    2016-04-01

    Full Text Available This paper discusses the design and interface of NUClear, a new hybrid message-passing architecture for embodied humanoid robotics. NUClear is modular, low latency and promotes functional and expandable software design. It greatly reduces the latency for messages passed between modules as the messages routes are established at compile time. It also reduces the number of functions that must be written using a system called co-messages which aids in dealing with multiple simultaneous data. NUClear has primarily been evaluated on a humanoid robotic soccer platform and on a robotic boat platform, with evaluations showing that NUClear requires fewer callbacks and cache variables over existing message-passing architectures. NUClear does have limitations when applying these techniques on multi-processed systems. It performs best in lower power systems where computational resources are limited. Future work will focus on applying the architecture to new platforms, including a larger form humanoid platform and a virtual reality platform and further evaluating the impact of the novel techniques introduced.

  7. A multi-agent system architecture for sensor networks.

    Science.gov (United States)

    Fuentes-Fernández, Rubén; Guijarro, María; Pajares, Gonzalo

    2009-01-01

    The design of the control systems for sensor networks presents important challenges. Besides the traditional problems about how to process the sensor data to obtain the target information, engineers need to consider additional aspects such as the heterogeneity and high number of sensors, and the flexibility of these networks regarding topologies and the sensors in them. Although there are partial approaches for resolving these issues, their integration relies on ad hoc solutions requiring important development efforts. In order to provide an effective approach for this integration, this paper proposes an architecture based on the multi-agent system paradigm with a clear separation of concerns. The architecture considers sensors as devices used by an upper layer of manager agents. These agents are able to communicate and negotiate services to achieve the required functionality. Activities are organized according to roles related with the different aspects to integrate, mainly sensor management, data processing, communication and adaptation to changes in the available devices and their capabilities. This organization largely isolates and decouples the data management from the changing network, while encouraging reuse of solutions. The use of the architecture is facilitated by a specific modelling language developed through metamodelling. A case study concerning a generic distributed system for fire fighting illustrates the approach and the comparison with related work.

  8. A Multi-Agent System Architecture for Sensor Networks

    Directory of Open Access Journals (Sweden)

    María Guijarro

    2009-12-01

    Full Text Available The design of the control systems for sensor networks presents important challenges. Besides the traditional problems about how to process the sensor data to obtain the target information, engineers need to consider additional aspects such as the heterogeneity and high number of sensors, and the flexibility of these networks regarding topologies and the sensors in them. Although there are partial approaches for resolving these issues, their integration relies on ad hoc solutions requiring important development efforts. In order to provide an effective approach for this integration, this paper proposes an architecture based on the multi-agent system paradigm with a clear separation of concerns. The architecture considers sensors as devices used by an upper layer of manager agents. These agents are able to communicate and negotiate services to achieve the required functionality. Activities are organized according to roles related with the different aspects to integrate, mainly sensor management, data processing, communication and adaptation to changes in the available devices and their capabilities. This organization largely isolates and decouples the data management from the changing network, while encouraging reuse of solutions. The use of the architecture is facilitated by a specific modelling language developed through metamodelling. A case study concerning a generic distributed system for fire fighting illustrates the approach and the comparison with related work.

  9. Stochastic description for open quantum systems

    CERN Document Server

    Calzetta, E A; Verdaguer, E; Calzetta, Esteban; Roura, Albert; Verdaguer, Enric

    2000-01-01

    A linear open quantum system consisting of a harmonic oscillator coupled linearly to an infinite set of independent harmonic oscillators is considered; these oscillators have a general spectral density function and are initially in thermal equilibrium. Using the influence functional formalism a formal Langevin equation can be introduced to describe the system's fully quantum properties even beyond the semiclassical regime. It is shown that the reduced Wigner function for the system is exactly the formal distribution function resulting from averaging both over the initial conditions and the stochastic source of the formal Langevin equation. The master equation for the reduced density matrix is then obtained in the same way a Fokker-Planck equation can always be derived from a Langevin equation characterizing a stochastic process. We also show that the quantum correlation functions for the system can be deduced within the stochastic description provided by the Langevin equation. It is emphasized that when the s...

  10. Enzyme efficiency: An open reaction system perspective

    Energy Technology Data Exchange (ETDEWEB)

    Banerjee, Kinshuk, E-mail: kb36@rice.edu [Department of Chemistry, University of Calcutta, Rajabazar Science College Campus, Kolkata 700 009 (India); Bhattacharyya, Kamal, E-mail: pchemkb@gmail.com [Department of Chemistry, University of Calcutta, 92 A.P.C. Road, Kolkata 700 009 (India)

    2015-12-21

    A measure of enzyme efficiency is proposed for an open reaction network that, in suitable form, applies to closed systems as well. The idea originates from the description of classical enzyme kinetics in terms of cycles. We derive analytical expressions for the efficiency measure by treating the network not only deterministically but also stochastically. The latter accounts for any significant amount of noise that can be present in biological systems and hence reveals its impact on efficiency. Numerical verification of the results is also performed. It is found that the deterministic equation overestimates the efficiency, the more so for very small system sizes. Roles of various kinetics parameters and system sizes on the efficiency are thoroughly explored and compared with the standard definition k{sub 2}/K{sub M}. Study of substrate fluctuation also indicates an interesting efficiency-accuracy balance.

  11. The SKA1 LOW telescope: system architecture and design performance

    Science.gov (United States)

    Waterson, Mark F.; Labate, Maria Grazia; Schnetler, Hermine; Wagg, Jeff; Turner, Wallace; Dewdney, Peter

    2016-07-01

    The SKA1-LOW radio telescope will be a low-frequency (50-350 MHz) aperture array located in Western Australia. Its scientific objectives will prioritize studies of the Epoch of Reionization and pulsar physics. Development of the telescope has been allocated to consortia responsible for the aperture array front end, timing distribution, signal and data transport, correlation and beamforming signal processors, infrastructure, monitor and control systems, and science data processing. This paper will describe the system architectural design and key performance parameters of the telescope and summarize the high-level sub-system designs of the consortia.

  12. Eigenstate tracking in open quantum systems

    Science.gov (United States)

    Jing, Jun; Sarandy, Marcelo S.; Lidar, Daniel A.; Luo, Da-Wei; Wu, Lian-Ao

    2016-10-01

    Keeping a quantum system in a given instantaneous eigenstate is a control problem with numerous applications, e.g., in quantum information processing. The problem is even more challenging in the setting of open quantum systems, where environment-mediated transitions introduce additional decoherence channels. Adiabatic passage is a well-established solution but requires a sufficiently slow evolution time that is dictated by the adiabatic theorem. Here we develop a systematic projection theory formulation for the transitionless evolution of general open quantum systems described by time-local master equations. We derive a time-convolutionless dynamical equation for the target instantaneous eigenstate of a given time-dependent Hamiltonian. A transitionless dynamics then arises in terms of a competition between the average Hamiltonian gap and the decoherence rate, which implies optimal adiabaticity timescales. We show how eigenstate tracking can be accomplished via control pulses, without explicitly incorporating counter-diabatic driving, thus offering an alternative route to accelerate adiabaticity. We examine rectangular pulses, chaotic signals, and white noise, and find that, remarkably, the effectiveness of eigenstate tracking hardly depends on the details of the control functions. In all cases the control protocol keeps the system in the desired instantaneous eigenstate throughout the entire evolution, along an accelerated adiabatic path.

  13. Optimising root system hydraulic architectures for water uptake

    Science.gov (United States)

    Meunier, Félicien; Couvreur, Valentin; Draye, Xavier; Javaux, Mathieu

    2015-04-01

    In this study we started from local hydraulic analysis of idealized root systems to develop a mathematical framework necessary for the understanding of global root systems behaviors. The underlying assumption of this study was that the plant is naturally optimised for the water uptake. The root system is thus a pipe network dedicated to the capture and transport of water. The main objective of the present research is to explain the fitness of major types of root architectures to their environment. In a first step, we developed links between local hydraulic properties and macroscopic parameters of (un)branched roots. The outcome of such an approach were functions of apparent conductance of entire root system and uptake distribution along the roots. We compared our development with some allometric scaling laws for the root water uptake: under the same simplifying assumptions we were able to obtain the same results and even to expand them to more physiological cases. Using empirical data of measured root conductance, we were also able to fit extremely well the data-set with this model. In a second stage we used generic architecture parameters and an existent root growth model to generate various types of root systems (from fibrous to tap). We combined both sides (hydraulic and architecture) then to maximize under a volume constraint either apparent conductance of root systems or the soil volume explored by active roots during the plant growth period. This approach has led to the sensitive parameters of the macroscopic parameters (conductance and location of the water uptake) of each single plant selected for this study. Scientific questions such as: "What is the optimal sowing density of a given hydraulic architecture ?" or "Which plant traits can we change to better explore the soil domain ?" can be also addressed with this approach: some potential applications are illustrated. The next (and ultimate phase) will be to validate our conclusions with real architectures

  14. Design and implementation of information acquisition system architecture for multi-sensor robots

    Institute of Scientific and Technical Information of China (English)

    Chen Guoliang; Huang Xinhan; Wang Min

    2007-01-01

    A multi-layer controller architecture based on digital signal processor(DSP)and on-chip MCU was proposed for multi-sensor information acquisition system;it consisted of a data acquisition unit and a data fusion unit,and used a host controller to connect the two units into all integrated system.Compared with architectures of traditional acquisition system,this architecture had good openness and goad adaptability of algorithms in hardware.To validate its feasibility,a small-scale prototype was cleverly designed,which adopted ADuC812.tMS320F206 and 89C51 as controllers,and had 16-channel ADC and 12-channel DAC with high accuracy of 12-bit.The Interfaces between different controllers were introduced in detail.Some basic parameters of the prototype were presented by board-level tests and by comparison with other two systems.The prototype Was employed to provide on-line state measurement,parameter estimation and decision-making for trajectory tracking of wheeled mobile robot.Experimental results show that the prototype achieves the goals of data acquisition,fusion and control perfectly.

  15. An architecture for agile shop floor control systems

    DEFF Research Database (Denmark)

    Langer, Gilad; Alting, Leo

    2000-01-01

    manufacturing systems to accommodate the increasing dynamic characteristics of the manufacturing environment. Regarding these new concepts, specifically holonic manufacturing systems, there are many aspects that should be considered. One of the aspects is the manufacturing system and its control, commonly known...... as shop floor control. This paper presents the Holonic Multi-cell Control System (HoMuCS) architecture that allows for design and development of holonic shop floor control systems. The HoMuCS is a shop floor control system which is sometimes referred to as a manufacturing execution system......Changes in markets and global business trends affect the manufacturing environment in infinite ways. These changes have brought about the need for a paradigm shift to reassess the manner in which manufacturing systems are developed and operated. New theories and concepts present solutions to enable...

  16. Reliability Architecture for Collaborative Robot Control Systems in Complex Environments

    Directory of Open Access Journals (Sweden)

    Liang Tang

    2016-02-01

    Full Text Available Many different kinds of robot systems have been successfully deployed in complex environments, while research into collaborative control systems between different robots, which can be seen as a hybrid internetware safety-critical system, has become essential. This paper discusses ways to construct robust and secure reliability architecture for collaborative robot control systems in complex environments. First, the indication system for evaluating the realtime reliability of hybrid internetware systems is established. Next, a dynamic collaborative reliability model for components of hybrid internetware systems is proposed. Then, a reliable, adaptive and evolutionary computation method for hybrid internetware systems is proposed, and a timing consistency verification solution for collaborative robot control internetware applications is studied. Finally, a multi-level security model supporting dynamic resource allocation is established.

  17. Multimedia architectures: from desktop systems to portable appliances

    Science.gov (United States)

    Bhaskaran, Vasudev; Konstantinides, Konstantinos; Natarajan, Balas R.

    1997-01-01

    Future desktop and portable computing systems will have as their core an integrated multimedia system. Such a system will seamlessly combine digital video, digital audio, computer animation, text, and graphics. Furthermore, such a system will allow for mixed-media creation, dissemination, and interactive access in real time. Multimedia architectures that need to support these functions have traditionally required special display and processing units for the different media types. This approach tends to be expensive and is inefficient in its use of silicon. Furthermore, such media-specific processing units are unable to cope with the fluid nature of the multimedia market wherein the needs and standards are changing and system manufacturers may demand a single component media engine across a range of products. This constraint has led to a shift towards providing a single-component multimedia specific computing engine that can be integrated easily within desktop systems, tethered consumer appliances, or portable appliances. In this paper, we review some of the recent architectural efforts in developing integrated media systems. We primarily focus on two efforts, namely the evolution of multimedia-capable general purpose processors and a more recent effort in developing single component mixed media co-processors. Design considerations that could facilitate the migration of these technologies to a portable integrated media system also are presented.

  18. LXI instrument development platform based on an open embedded operating system

    Institute of Scientific and Technical Information of China (English)

    Yu Wilson

    2007-01-01

    This paper introduces the architecture and components of LXI instrument development platform based on an open embedded operating system, which is a modular and configurable platform. The platform is a total solution to develop LXI instrument modules and systems. On the other hand, it also supports other types of instrument development. This is a generic and efficient platform. At the end, this paper addresses the technical tends,challenges, and recommends solutions.

  19. Towards an inline reconstruction architecture for micro-CT systems

    Energy Technology Data Exchange (ETDEWEB)

    Brasse, David [Institut de Recherches Subatomiques, IN2P3-CNRS/ULP, Strasbourg (France); Humbert, Bernard [Institut de Recherches Subatomiques, IN2P3-CNRS/ULP, Strasbourg (France); Mathelin, Carole [Institut de genetique et de biologie moleculaire et cellulaire, Illkirch-Graffenstaden (France); Rio, Marie-Christine [Institut de genetique et de biologie moleculaire et cellulaire, Illkirch-Graffenstaden (France); Guyonnet, Jean-Louis [Institut de Recherches Subatomiques, IN2P3-CNRS/ULP, Strasbourg (France)

    2005-12-21

    Recent developments in micro-CT have revolutionized the ability to examine in vivo living experimental animal models such as mouse with a spatial resolution less than 50 {mu}m. The main requirements of in vivo imaging for biological researchers are a good spatial resolution, a low dose induced to the animal during the full examination and a reduced acquisition and reconstruction time for screening purposes. We introduce inline acquisition and reconstruction architecture to obtain in real time the 3D attenuation map of the animal fulfilling the three previous requirements. The micro-CT system is based on commercially available x-ray detector and micro-focus x-ray source. The reconstruction architecture is based on a cluster of PCs where a dedicated communication scheme combining serial and parallel treatments is implemented. In order to obtain high performance transmission rate between the detector and the reconstruction architecture, a dedicated data acquisition system is also developed. With the proposed solution, the time required to filter and backproject a projection of 2048 x 2048 pixels inside a volume of 140 mega voxels using the Feldkamp algorithm is similar to 500 ms, the time needed to acquire the same projection.

  20. Enterprise Information System Architecture Based on Web 2.0

    Institute of Scientific and Technical Information of China (English)

    YI Xiushuang; WANG Yu; LIU Jinghong; WEN Zhankao

    2006-01-01

    Enterprise information systems with a great use of Web 2.0 technologies will be more open, free, and more efficient.With the contrast between classic Web technologies and Web 2.0 technologies, we represent a sample of enterprise information system based on Web 2.0, and show how the use of Web 2.0 technologies changes the system data exchange model of the enterprise information systems and how it improves the efficiency and effectiveness of information systems.

  1. An Analysis Architecture for Communications in Multi-agent Systems

    Directory of Open Access Journals (Sweden)

    Celia Gutiérrez

    2013-03-01

    Full Text Available Evaluation tools are significant from the Agent Oriented Software Engineering (AOSE point of view. Defective designs of communications in Multi-agent Systems (MAS may overload one or several agents, causing a bullying effect on them. Bullying communications have avoidable consequences, as high response times and low quality of service (QoS. Architectures that perform evaluation functionality must include features to measure the bullying activity and QoS, but it is also recommendable that they have reusability and scalability features. Evaluation tools with these features can be applied to a wide range of MAS, while minimizing designer’s effort. This work describes the design of an architecture for communication analysis, and its evolution to a modular version, that can be applied to different types of MAS. Experimentation of both versions shows differences between its executions.

  2. VLSI neural system architecture for finite ring recursive reduction.

    Science.gov (United States)

    Zhang, D; Jullien, G A

    1996-12-01

    The use of neural-like networks to implement finite ring computations has been presented in a previous paper. This paper develops efficient VLSI neural system architecture for the finite ring recursive reduction (FRRR), including module reduction, MSB carry iteration and feedforward processing. These techniques deal with the basic principles involved in constructing a FRRR, and their implementations are efficiently matched to the VLSI medium. Compared with the other structure models for finite ring computation (e.g. modification of binary arithmetic logic and bit-steered ROM's), the FRRR structure has the lowest area complexity in silicon while maintaining a high throughput rate. Examples of several implementations are used to illustrate the effectiveness of the FRRR architecture.

  3. The Management of Manufacturing-Oriented Informatics Systems Using Efficient and Flexible Architectures

    Directory of Open Access Journals (Sweden)

    Constantin Daniel AVRAM

    2011-01-01

    Full Text Available Industry and in particular the manufacturing-oriented sector has always been researched and innovated as a result of technological progress, diversification and differentiation among consumers' demands. A company that provides to its customers products matching perfectly their demands at competitive prices has a great advantage over its competitors. Manufacturing-oriented information systems are becoming more flexible and configurable and they require integration with the entire organization. This can be done using efficient software architectures that will allow the coexistence between commercial solutions and open source components while sharing computing resources organized in grid infrastructures and under the governance of powerful management tools.

  4. A Software Architecture for Control of Value Production in Federated Systems

    Directory of Open Access Journals (Sweden)

    Jay S. Bayne

    2003-08-01

    Full Text Available Federated enterprises are defined as interactive commercial entities that produce products and consume resources through a network of open, free-market transactions. Value production in such entities is defined as the real-time computation of enterprise value propositions. These computations are increasingly taking place in a grid-connected space – a space that must provide for secure, real-time, reliable end-to-end transactions governed by formal trading protocols. We present the concept of a value production unit (VPU as a key element of federated trading systems, and a software architecture for automation and control of federations of such VPUs.

  5. Adiabatic Quantum Search in Open Systems.

    Science.gov (United States)

    Wild, Dominik S; Gopalakrishnan, Sarang; Knap, Michael; Yao, Norman Y; Lukin, Mikhail D

    2016-10-07

    Adiabatic quantum algorithms represent a promising approach to universal quantum computation. In isolated systems, a key limitation to such algorithms is the presence of avoided level crossings, where gaps become extremely small. In open quantum systems, the fundamental robustness of adiabatic algorithms remains unresolved. Here, we study the dynamics near an avoided level crossing associated with the adiabatic quantum search algorithm, when the system is coupled to a generic environment. At zero temperature, we find that the algorithm remains scalable provided the noise spectral density of the environment decays sufficiently fast at low frequencies. By contrast, higher order scattering processes render the algorithm inefficient at any finite temperature regardless of the spectral density, implying that no quantum speedup can be achieved. Extensions and implications for other adiabatic quantum algorithms will be discussed.

  6. Adiabatic Quantum Search in Open Systems

    Science.gov (United States)

    Wild, Dominik S.; Gopalakrishnan, Sarang; Knap, Michael; Yao, Norman Y.; Lukin, Mikhail D.

    2016-10-01

    Adiabatic quantum algorithms represent a promising approach to universal quantum computation. In isolated systems, a key limitation to such algorithms is the presence of avoided level crossings, where gaps become extremely small. In open quantum systems, the fundamental robustness of adiabatic algorithms remains unresolved. Here, we study the dynamics near an avoided level crossing associated with the adiabatic quantum search algorithm, when the system is coupled to a generic environment. At zero temperature, we find that the algorithm remains scalable provided the noise spectral density of the environment decays sufficiently fast at low frequencies. By contrast, higher order scattering processes render the algorithm inefficient at any finite temperature regardless of the spectral density, implying that no quantum speedup can be achieved. Extensions and implications for other adiabatic quantum algorithms will be discussed.

  7. A New Indoor Positioning System Architecture Using GPS Signals

    Science.gov (United States)

    Xu, Rui; Chen, Wu; Xu, Ying; Ji, Shengyue

    2015-01-01

    The pseudolite system is a good alternative for indoor positioning systems due to its large coverage area and accurate positioning solution. However, for common Global Positioning System (GPS) receivers, the pseudolite system requires some modifications of the user terminals. To solve the problem, this paper proposes a new pseudolite-based indoor positioning system architecture. The main idea is to receive real-world GPS signals, repeat each satellite signal and transmit those using indoor transmitting antennas. The transmitted GPS-like signal can be processed (signal acquisition and tracking, navigation data decoding) by the general receiver and thus no hardware-level modification on the receiver is required. In addition, all Tx can be synchronized with each other since one single clock is used in Rx/Tx. The proposed system is simulated using a software GPS receiver. The simulation results show the indoor positioning system is able to provide high accurate horizontal positioning in both static and dynamic situations. PMID:25938199

  8. A New Indoor Positioning System Architecture Using GPS Signals.

    Science.gov (United States)

    Xu, Rui; Chen, Wu; Xu, Ying; Ji, Shengyue

    2015-04-29

    The pseudolite system is a good alternative for indoor positioning systems due to its large coverage area and accurate positioning solution. However, for common Global Positioning System (GPS) receivers, the pseudolite system requires some modifications of the user terminals. To solve the problem, this paper proposes a new pseudolite-based indoor positioning system architecture. The main idea is to receive real-world GPS signals, repeat each satellite signal and transmit those using indoor transmitting antennas. The transmitted GPS-like signal can be processed (signal acquisition and tracking, navigation data decoding) by the general receiver and thus no hardware-level modification on the receiver is required. In addition, all Tx can be synchronized with each other since one single clock is used in Rx/Tx. The proposed system is simulated using a software GPS receiver. The simulation results show the indoor positioning system is able to provide high accurate horizontal positioning in both static and dynamic situations.

  9. Neuromorphic Computing – From Materials Research to Systems Architecture Roundtable

    Energy Technology Data Exchange (ETDEWEB)

    Schuller, Ivan K. [Univ. of California, San Diego, CA (United States); Stevens, Rick [Argonne National Lab. (ANL), Argonne, IL (United States); Univ. of Chicago, IL (United States); Pino, Robinson [Dept. of Energy (DOE) Office of Science, Washington, DC (United States); Pechan, Michael [Dept. of Energy (DOE) Office of Science, Washington, DC (United States)

    2015-10-29

    Computation in its many forms is the engine that fuels our modern civilization. Modern computation—based on the von Neumann architecture—has allowed, until now, the development of continuous improvements, as predicted by Moore’s law. However, computation using current architectures and materials will inevitably—within the next 10 years—reach a limit because of fundamental scientific reasons. DOE convened a roundtable of experts in neuromorphic computing systems, materials science, and computer science in Washington on October 29-30, 2015 to address the following basic questions: Can brain-like (“neuromorphic”) computing devices based on new material concepts and systems be developed to dramatically outperform conventional CMOS based technology? If so, what are the basic research challenges for materials sicence and computing? The overarching answer that emerged was: The development of novel functional materials and devices incorporated into unique architectures will allow a revolutionary technological leap toward the implementation of a fully “neuromorphic” computer. To address this challenge, the following issues were considered: The main differences between neuromorphic and conventional computing as related to: signaling models, timing/clock, non-volatile memory, architecture, fault tolerance, integrated memory and compute, noise tolerance, analog vs. digital, and in situ learning New neuromorphic architectures needed to: produce lower energy consumption, potential novel nanostructured materials, and enhanced computation Device and materials properties needed to implement functions such as: hysteresis, stability, and fault tolerance Comparisons of different implementations: spin torque, memristors, resistive switching, phase change, and optical schemes for enhanced breakthroughs in performance, cost, fault tolerance, and/or manufacturability.

  10. Root system markup language: toward a unified root architecture description language.

    Science.gov (United States)

    Lobet, Guillaume; Pound, Michael P; Diener, Julien; Pradal, Christophe; Draye, Xavier; Godin, Christophe; Javaux, Mathieu; Leitner, Daniel; Meunier, Félicien; Nacry, Philippe; Pridmore, Tony P; Schnepf, Andrea

    2015-03-01

    The number of image analysis tools supporting the extraction of architectural features of root systems has increased in recent years. These tools offer a handy set of complementary facilities, yet it is widely accepted that none of these software tools is able to extract in an efficient way the growing array of static and dynamic features for different types of images and species. We describe the Root System Markup Language (RSML), which has been designed to overcome two major challenges: (1) to enable portability of root architecture data between different software tools in an easy and interoperable manner, allowing seamless collaborative work; and (2) to provide a standard format upon which to base central repositories that will soon arise following the expanding worldwide root phenotyping effort. RSML follows the XML standard to store two- or three-dimensional image metadata, plant and root properties and geometries, continuous functions along individual root paths, and a suite of annotations at the image, plant, or root scale at one or several time points. Plant ontologies are used to describe botanical entities that are relevant at the scale of root system architecture. An XML schema describes the features and constraints of RSML, and open-source packages have been developed in several languages (R, Excel, Java, Python, and C#) to enable researchers to integrate RSML files into popular research workflow.

  11. Development of the Lymphoma Enterprise Architecture Database: a caBIG Silver level compliant system.

    Science.gov (United States)

    Huang, Taoying; Shenoy, Pareen J; Sinha, Rajni; Graiser, Michael; Bumpers, Kevin W; Flowers, Christopher R

    2009-04-03

    Lymphomas are the fifth most common cancer in United States with numerous histological subtypes. Integrating existing clinical information on lymphoma patients provides a platform for understanding biological variability in presentation and treatment response and aids development of novel therapies. We developed a cancer Biomedical Informatics Grid (caBIG) Silver level compliant lymphoma database, called the Lymphoma Enterprise Architecture Data-system (LEAD), which integrates the pathology, pharmacy, laboratory, cancer registry, clinical trials, and clinical data from institutional databases. We utilized the Cancer Common Ontological Representation Environment Software Development Kit (caCORE SDK) provided by National Cancer Institute's Center for Bioinformatics to establish the LEAD platform for data management. The caCORE SDK generated system utilizes an n-tier architecture with open Application Programming Interfaces, controlled vocabularies, and registered metadata to achieve semantic integration across multiple cancer databases. We demonstrated that the data elements and structures within LEAD could be used to manage clinical research data from phase 1 clinical trials, cohort studies, and registry data from the Surveillance Epidemiology and End Results database. This work provides a clear example of how semantic technologies from caBIG can be applied to support a wide range of clinical and research tasks, and integrate data from disparate systems into a single architecture. This illustrates the central importance of caBIG to the management of clinical and biological data.

  12. The type II secretion system: biogenesis, molecular architecture and mechanism.

    Science.gov (United States)

    Korotkov, Konstantin V; Sandkvist, Maria; Hol, Wim G J

    2012-04-02

    Many gram-negative bacteria use the sophisticated type II secretion system (T2SS) to translocate a wide range of proteins from the periplasm across the outer membrane. The inner-membrane platform of the T2SS is the nexus of the system and orchestrates the secretion process through its interactions with the periplasmic filamentous pseudopilus, the dodecameric outer-membrane complex and a cytoplasmic secretion ATPase. Here, recent structural and biochemical information is reviewed to describe our current knowledge of the biogenesis and architecture of the T2SS and its mechanism of action.

  13. A multi-agent system architecture for geographic information gathering.

    Science.gov (United States)

    Gao, Gang-Yi; Wang, Shen-Kang

    2004-11-01

    World Wide Web (WWW) is a vast repository of information, including a great deal of geographic information. But the location and retrieval of geographic information will require a significant amount of time and effort. In addition, different users usually have different views and interests in the same information. To resolve such problems, this paper first proposed a model of geographic information gathering based on multi-Agent (MA) architecture. Then based on this model, we construct a prototype system with GML (Geography Markup Language). This system consists of three tiers-Client, Web Server and Data Resource. Finally, we expatiate on the process of Web Server.

  14. A multi-Agent system architecture for geographic information gathering

    Institute of Scientific and Technical Information of China (English)

    高刚毅; 王申康

    2004-01-01

    World Wide Web (WWW) is a vast repository of information, including a great deal of geographic information. But the location and retrieval of geographic information will require a significant amount of time and effort. In addition, different users usually have different views and interests in the same information. To resolve such problems, this paper first proposed a model of geographic information gathering based on multi-Agent (MA) architecture. Then based on this model, we construct a prototype system with GML (Geography Markup Language). This system consists of three tiers-Client, Web Server and Data Resource. Finally, we expatiate on the process of Web Server.

  15. Advances in network systems architectures, security, and applications

    CERN Document Server

    Awad, Ali; Furtak, Janusz; Legierski, Jarosław

    2017-01-01

    This book provides the reader with a comprehensive selection of cutting–edge algorithms, technologies, and applications. The volume offers new insights into a range of fundamentally important topics in network architectures, network security, and network applications. It serves as a reference for researchers and practitioners by featuring research contributions exemplifying research done in the field of network systems. In addition, the book highlights several key topics in both theoretical and practical aspects of networking. These include wireless sensor networks, performance of TCP connections in mobile networks, photonic data transport networks, security policies, credentials management, data encryption for network transmission, risk management, live TV services, and multicore energy harvesting in distributed systems. .

  16. OpenCL: A Parallel Programming Standard for Heterogeneous Computing Systems.

    Science.gov (United States)

    Stone, John E; Gohara, David; Shi, Guochun

    2010-05-01

    We provide an overview of the key architectural features of recent microprocessor designs and describe the programming model and abstractions provided by OpenCL, a new parallel programming standard targeting these architectures.

  17. Spectroscopic studies in open quantum systems

    CERN Document Server

    Rotter, I; Pichugin, K N; Seba, P

    2000-01-01

    The spectroscopic properties of an open quantum system are determined by theeigenvalues and eigenfunctions of an effective Hamiltonian H consisting of theHamiltonian H_0 of the corresponding closed system and a non-Hermitiancorrection term W arising from the interaction via the continuum of decaychannels. The eigenvalues E_R of H are complex. They are the poles of theS-matrix and provide both the energies and widths of the states. We illustratethe interplay between Re(H) and Im(H) by means of the different interferencephenomena between two neighboured resonance states. Level repulsion along thereal axis appears if the interaction is caused mainly by Re(H) while abifurcation of the widths appears if the interaction occurs mainly due toIm(H). We then calculate the poles of the S-matrix and the correspondingwavefunctions for a rectangular microwave resonator with a scatter as afunction of the area of the resonator as well as of the degree of opening to aguide. The calculations are performed by using the method o...

  18. Spectroscopic studies in open quantum systems

    Science.gov (United States)

    Rotter; Persson; Pichugin; Seba

    2000-07-01

    The Hamiltonian H of an open quantum system is non-Hermitian. Its complex eigenvalues E(R) are the poles of the S matrix and provide both the energies and widths of the states. We illustrate the interplay between Re(H) and Im(H) by means of the different interference phenomena between two neighboring resonance states. Level repulsion may occur along the real or imaginary axis (the latter is called resonance trapping). In any case, the eigenvalues of the two states avoid crossing in the complex plane. We then calculate the poles of the S matrix and the corresponding wave functions for a rectangular microwave resonator with a scatter as a function of the area of the resonator as well as of the degree of opening to a waveguide. The calculations are performed by using the method of exterior complex scaling. Re(H) and Im(H) cause changes in the structure of the wave functions which are permanent, as a rule. The resonance picture obtained from the microwave resonator shows all the characteristic features known from the study of many-body systems in spite of the absence of two-body forces. The effects arising from the interplay between resonance trapping and level repulsion along the real axis are not involved in the statistical theory (random matrix theory).

  19. Architecture Design and Experimental Platform Demonstration of Optical Network based on OpenFlow Protocol

    Science.gov (United States)

    Xing, Fangyuan; Wang, Honghuan; Yin, Hongxi; Li, Ming; Luo, Shenzi; Wu, Chenguang

    2016-02-01

    With the extensive application of cloud computing and data centres, as well as the constantly emerging services, the big data with the burst characteristic has brought huge challenges to optical networks. Consequently, the software defined optical network (SDON) that combines optical networks with software defined network (SDN), has attracted much attention. In this paper, an OpenFlow-enabled optical node employed in optical cross-connect (OXC) and reconfigurable optical add/drop multiplexer (ROADM), is proposed. An open source OpenFlow controller is extended on routing strategies. In addition, the experiment platform based on OpenFlow protocol for software defined optical network, is designed. The feasibility and availability of the OpenFlow-enabled optical nodes and the extended OpenFlow controller are validated by the connectivity test, protection switching and load balancing experiments in this test platform.

  20. OpenOrbiter: A Low-Cost, Educational Prototype CubeSat Mission Architecture

    Directory of Open Access Journals (Sweden)

    Nicholas Long

    2013-01-01

    Full Text Available The preliminary design for the Open Prototype for Educational NanoSats (OPEN demonstration spacecraft, OpenOrbiter, is presented. OPEN is designed to facilitate the formation of CubeSat development programs nationally and worldwide via providing a publically-available set of spacecraft design documents, implementation and testing plans. These documents should allow the creation of a 1-U CubeSat with a parts budget of approximately $ 5,000. This allows spacecraft development to be incorporated in regular curriculum and supported from teaching (as opposed to research funds. The OPEN design, implemented by OpenOrbiter, has an innovative internal structure, separates payload and operations processing and includes features to ease and highlight errors in integration.

  1. Feshbach Projection Formalism for Open Quantum Systems

    Science.gov (United States)

    Chruściński, Dariusz; Kossakowski, Andrzej

    2013-08-01

    We provide a new approach to open quantum systems which is based on the Feshbach projection method. Instead of looking for a master equation for the dynamical map acting in the space of density operators we provide the corresponding equation for the evolution in the Hilbert space of the amplitude operators. Its solution enables one to construct a legitimate quantum evolution (completely positive and trace preserving). Our approach, contrary to the standard Nakajima-Zwanzig method, allows for a series of consistent approximations resulting in a legitimate quantum evolution. The new scheme is illustrated by the well-known spin-boson model beyond the rotating wave approximation. It is shown that the presence of counterrotating terms dramatically changes the asymptotic evolution of the system.

  2. Quantum speed limits in open system dynamics.

    Science.gov (United States)

    del Campo, A; Egusquiza, I L; Plenio, M B; Huelga, S F

    2013-02-01

    Bounds to the speed of evolution of a quantum system are of fundamental interest in quantum metrology, quantum chemical dynamics, and quantum computation. We derive a time-energy uncertainty relation for open quantum systems undergoing a general, completely positive, and trace preserving evolution which provides a bound to the quantum speed limit. When the evolution is of the Lindblad form, the bound is analogous to the Mandelstam-Tamm relation which applies in the unitary case, with the role of the Hamiltonian being played by the adjoint of the generator of the dynamical semigroup. The utility of the new bound is exemplified in different scenarios, ranging from the estimation of the passage time to the determination of precision limits for quantum metrology in the presence of dephasing noise.

  3. Phase transitions in open quantum systems

    CERN Document Server

    Jung, C; Rotter, I

    1999-01-01

    We consider the behaviour of open quantum systems in dependence on the coupling to one decay channel by introducing the coupling parameter $\\alpha$ being proportional to the average degree of overlapping. Under critical conditions, a reorganization of the spectrum takes place which creates a bifurcation of the time scales with respect to the lifetimes of the resonance states. We derive analytically the conditions under which the reorganization process can be understood as a second-order phase transition and illustrate our results by numerical investigations. The conditions are fulfilled e.g. for a picket fence with equal coupling of the states to the continuum. Energy dependencies within the system are included. We consider also the generic case of an unfolded Gaussian Orthogonal Ensemble. In all these cases, the reorganization of the spectrum occurs at the critical value $\\alpha_{crit}$ of the control parameter globally over the whole energy range of the spectrum. All states act cooperatively.

  4. Fixed Points for Stochastic Open Chemical Systems

    CERN Document Server

    Malyshev, V A

    2011-01-01

    In the first part of this paper we give a short review of the hierarchy of stochastic models, related to physical chemistry. In the basement of this hierarchy there are two models --- stochastic chemical kinetics and the Kac model for Boltzman equation. Classical chemical kinetics and chemical thermodynamics are obtained as some scaling limits in the models, introduced below. In the second part of this paper we specify some simple class of open chemical reaction systems, where one can still prove the existence of attracting fixed points. For example, Michaelis\\tire Menten kinetics belongs to this class. At the end we present a simplest possible model of the biological network. It is a network of networks (of closed chemical reaction systems, called compartments), so that the only source of nonreversibility is the matter exchange (transport) with the environment and between the compartments. Keywords: chemical kinetics, chemical thermodynamics, Kac model, mathematical biology

  5. PC-Cluster based Storage System Architecture for Cloud Storage

    CERN Document Server

    Yee, Tin Tin

    2011-01-01

    Design and architecture of cloud storage system plays a vital role in cloud computing infrastructure in order to improve the storage capacity as well as cost effectiveness. Usually cloud storage system provides users to efficient storage space with elasticity feature. One of the challenges of cloud storage system is difficult to balance the providing huge elastic capacity of storage and investment of expensive cost for it. In order to solve this issue in the cloud storage infrastructure, low cost PC cluster based storage server is configured to be activated for large amount of data to provide cloud users. Moreover, one of the contributions of this system is proposed an analytical model using M/M/1 queuing network model, which is modeled on intended architecture to provide better response time, utilization of storage as well as pending time when the system is running. According to the analytical result on experimental testing, the storage can be utilized more than 90% of storage space. In this paper, two parts...

  6. 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.

  7. Space Telecommunications Radio System Software Architecture Concepts and Analysis

    Science.gov (United States)

    Handler, Louis M.; Hall, Charles S.; Briones, Janette C.; Blaser, Tammy M.

    2008-01-01

    The Space Telecommunications Radio System (STRS) project investigated various Software Defined Radio (SDR) architectures for Space. An STRS architecture has been selected that separates the STRS operating environment from its various waveforms and also abstracts any specialized hardware to limit its effect on the operating environment. The design supports software evolution where new functionality is incorporated into the radio. Radio hardware functionality has been moving from hardware based ASICs into firmware and software based processors such as FPGAs, DSPs and General Purpose Processors (GPPs). Use cases capture the requirements of a system by describing how the system should interact with the users or other systems (the actors) to achieve a specific goal. The Unified Modeling Language (UML) is used to illustrate the Use Cases in a variety of ways. The Top Level Use Case diagram shows groupings of the use cases and how the actors are involved. The state diagrams depict the various states that a system or object may be in and the transitions between those states. The sequence diagrams show the main flow of activity as described in the use cases.

  8. An architecture model for multiple disease management information systems.

    Science.gov (United States)

    Chen, Lichin; Yu, Hui-Chu; Li, Hao-Chun; Wang, Yi-Van; Chen, Huang-Jen; Wang, I-Ching; Wang, Chiou-Shiang; Peng, Hui-Yu; Hsu, Yu-Ling; Chen, Chi-Huang; Chuang, Lee-Ming; Lee, Hung-Chang; Chung, Yufang; Lai, Feipei

    2013-04-01

    Disease management is a program which attempts to overcome the fragmentation of healthcare system and improve the quality of care. Many studies have proven the effectiveness of disease management. However, the case managers were spending the majority of time in documentation, coordinating the members of the care team. They need a tool to support them with daily practice and optimizing the inefficient workflow. Several discussions have indicated that information technology plays an important role in the era of disease management. Whereas applications have been developed, it is inefficient to develop information system for each disease management program individually. The aim of this research is to support the work of disease management, reform the inefficient workflow, and propose an architecture model that enhance on the reusability and time saving of information system development. The proposed architecture model had been successfully implemented into two disease management information system, and the result was evaluated through reusability analysis, time consumed analysis, pre- and post-implement workflow analysis, and user questionnaire survey. The reusability of the proposed model was high, less than half of the time was consumed, and the workflow had been improved. The overall user aspect is positive. The supportiveness during daily workflow is high. The system empowers the case managers with better information and leads to better decision making.

  9. 2016 37th International Conference Information Systems Architecture and Technology

    CERN Document Server

    Grzech, Adam; Świątek, Jerzy; Wilimowska, Zofia

    2017-01-01

    This four volume set of books constitutes the proceedings of the 2016 37th International Conference Information Systems Architecture and Technology (ISAT), or ISAT 2016 for short, held on September 18–20, 2016 in Karpacz, Poland. The conference was organized by the Department of Management Systems and the Department of Computer Science, Wrocław University of Science and Technology, Poland. The papers included in the proceedings have been subject to a thorough review process by highly qualified peer reviewers. The accepted papers have been grouped into four parts: Part I—addressing topics including, but not limited to, systems analysis and modeling, methods for managing complex planning environment and insights from Big Data research projects. Part II—discoursing about topics including, but not limited to, Web systems, computer networks, distributed computing, and mulit-agent systems and Internet of Things. Part III—discussing topics including, but not limited to, mobile and Service Oriented Architect...

  10. Standard data systems architecture for the Space Station

    Science.gov (United States)

    Greenberg, E.; Hooke, A. J.; Pomphrey, R. B.; Smith, J. F.

    1986-01-01

    Attention is given to an end-to-end Space Station Data System (SSDS) architecture which is based on internationally-recommended standards developed by the Consultative Committee for Space Data Systems (CCSDS). The proposed system uses simple modular building blocks that are recursively replicated and linked to construct essentially any desired data system configuration. The SSDS concept provides for a user-transparent data transport system which is entirely independent of the characteristics of the user data being transported, and in addition, has the flexibility to accommodate mission-induced changes in data traffic. SSDS physical elements include the following: (1) on-orbit local area networks, (2) space-to-ground, ground-to-space, and space-to-space data links, and (3) ground mission support facilities containing telemetry and telecommand data handling termini and preprocessing services.

  11. Blackboard architectures and their relationship to autonomous space systems

    Science.gov (United States)

    Thornbrugh, Allison

    1988-01-01

    The blackboard architecture provides a powerful paradigm for the autonomy expected in future spaceborne systems, especially SDI and Space Station. Autonomous systems will require skill in both the classic task of information analysis and the newer tasks of decision making, planning and system control. Successful blackboard systems have been built to deal with each of these tasks separately. The blackboard paradigm achieves success in difficult domains through its ability to integrate several uncertain sources of knowledge. In addition to flexible behavior during autonomous operation, the system must also be capable of incrementally growing from semiautonomy to full autonomy. The blackboard structure allows this development. The blackboard's ability to handle error, its flexible execution, and variants of this paradigm are discussed as they apply to specific problems of the space environment.

  12. Remote Control for Robotic Systems Using CORBA as Communication Architecture

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    This paper proposes a novel method to implement network connections among a client and remoterobotic systems using CORBA for developing telecare system to aid the aged or disabled. The proposed methodmakes system have low cost and wide availability, high scaling and inter-operating ability to allow the clients andserver objects, written in different languages, run in different operating system, and connected in different net-work to inter-operate. It also makes system easy to be extended and integrated with the other technologies andapplications distributed over the Internet. Using CORBA as a communication architecture, we developed hard-ware base, task-level robot arm control server, live image feedback server and mobile robot control server,which can provide some basic care services to aid the aged and disabled.

  13. Standard data systems architecture for the Space Station

    Science.gov (United States)

    Greenberg, E.; Hooke, A. J.; Pomphrey, R. B.; Smith, J. F.

    1986-01-01

    Attention is given to an end-to-end Space Station Data System (SSDS) architecture which is based on internationally-recommended standards developed by the Consultative Committee for Space Data Systems (CCSDS). The proposed system uses simple modular building blocks that are recursively replicated and linked to construct essentially any desired data system configuration. The SSDS concept provides for a user-transparent data transport system which is entirely independent of the characteristics of the user data being transported, and in addition, has the flexibility to accommodate mission-induced changes in data traffic. SSDS physical elements include the following: (1) on-orbit local area networks, (2) space-to-ground, ground-to-space, and space-to-space data links, and (3) ground mission support facilities containing telemetry and telecommand data handling termini and preprocessing services.

  14. Dynamical architectures of planetary systems induced by orbital migration

    CERN Document Server

    Szuszkiewicz, Ewa

    2009-01-01

    The aim of this talk is to present the most recent advances in establishing plausible planetary system architectures determined by the gravitational tidal interactions between the planets and the disc in which they are embedded during the early epoch of planetary system formation. We concentrate on a very well defined and intensively studied process of the disc-planet interaction leading to the planet migration. We focus on the dynamics of the systems in which low-mass planets are present. Particular attention is devoted to investigation of the role of resonant configurations. Our studies, apart from being complementary to the fast progress occurring just now in observing the whole variety of planetary systems and uncovering their structure and origin, can also constitute a valuable contribution in support of the missions planned to enhance the number of detected multiple systems.

  15. 36th International Conference on Information Systems Architecture and Technology

    CERN Document Server

    Grzech, Adam; Świątek, Jerzy; Wilimowska, Zofia

    2016-01-01

    This four volume set of books constitutes the proceedings of the 36th International Conference Information Systems Architecture and Technology 2015, or ISAT 2015 for short, held on September 20–22, 2015 in Karpacz, Poland. The conference was organized by the Computer Science and Management Systems Departments, Faculty of Computer Science and Management, Wroclaw University of Technology, Poland. The papers included in the proceedings have been subject to a thorough review process by highly qualified peer reviewers. The accepted papers have been grouped into four parts: Part I—addressing topics including, but not limited to, systems analysis and modeling, methods for managing complex planning environment and insights from Big Data research projects. Part II—discoursing about topics including, but not limited to, Web systems, computer networks, distributed computing, and multi-agent systems and Internet of Things. Part III—discussing topics including, but not limited to, mobile and Service Oriented Archi...

  16. Modular Open Network ARCHitecture (MONARCH): Transitioning plug-and-play to aerospace

    Science.gov (United States)

    Martin, M.; Lyke, J.

    The Air Force Research Laboratory (AFRL) developed an initial plug-and-play (PnP) capability for spacecraft, similar to USB on personal computers, which better defines hardware and software interfaces and incorporates self-discovery and auto-configuration in order to simplify spacecraft development and reduce cost and schedule. PnP technology was matured through a suborbital PnP flight experiment in September 2007 and a secondary Spacecraft Avionics Experiment (SAE) payload on the TacSat-3 satellite, which launched in May 2009. AFRL developed and submitted a complete set of PnP standards through the American Institute of Aeronautics and Astronautics (AIAA) in 2011. Space electronics to adapt existing satellite components and implement full PnP on satellites in accordance with these AFRL standards was independently developed in alternate hardware implementations by Goodrich Corp under AFRL and by Northrop Grumman under Operationally Responsive Space (ORS). In 2011, AFRL conducted a cost-benefit analysis of PnP and assembled a collaborative review board (CRB) in Sept 2011 to evaluate PnP. This CRB was comprised of representatives from Space and Missiles Center (SMC), National Reconnaissance Organization (NRO), Naval Research Laboratory (NRL), John Hopkins University (JHU) Applied Physics Laboratory (APL), The Aerospace Corporation, and several large commercial and DOD satellite developers. This CRB laid out a transition path to develop and implement PnP standards for implementation in large (> 1000 kg) DOD and commercial satellites. Transition of PnP technology into operational systems continues in PnP architecture studies for SMC, PnP products from multiple space industry vendors, commercial implementations of PnP, and the Northrop Grumman ORS-2 spacecraft currently project to fly in 2014-2015. This paper provides details related to development of PnP technology, AFRL's cost-benefit analysis of PnP, recommendations of the PnP CRB, and on-going efforts to mature - nd

  17. AN ARCHITECTURE FOR AUTOMATED FIRE DETECTION EARLY WARNING SYSTEM BASED ON GEOPROCESSING SERVICE COMPOSITION

    Directory of Open Access Journals (Sweden)

    F. Samadzadegan

    2013-09-01

    Full Text Available Rapidly discovering, sharing, integrating and applying geospatial information are key issues in the domain of emergency response and disaster management. Due to the distributed nature of data and processing resources in disaster management, utilizing a Service Oriented Architecture (SOA to take advantages of workflow of services provides an efficient, flexible and reliable implementations to encounter different hazardous situation. The implementation specification of the Web Processing Service (WPS has guided geospatial data processing in a Service Oriented Architecture (SOA platform to become a widely accepted solution for processing remotely sensed data on the web. This paper presents an architecture design based on OGC web services for automated workflow for acquisition, processing remotely sensed data, detecting fire and sending notifications to the authorities. A basic architecture and its building blocks for an automated fire detection early warning system are represented using web-based processing of remote sensing imageries utilizing MODIS data. A composition of WPS processes is proposed as a WPS service to extract fire events from MODIS data. Subsequently, the paper highlights the role of WPS as a middleware interface in the domain of geospatial web service technology that can be used to invoke a large variety of geoprocessing operations and chaining of other web services as an engine of composition. The applicability of proposed architecture by a real world fire event detection and notification use case is evaluated. A GeoPortal client with open-source software was developed to manage data, metadata, processes, and authorities. Investigating feasibility and benefits of proposed framework shows that this framework can be used for wide area of geospatial applications specially disaster management and environmental monitoring.

  18. An Architecture for Automated Fire Detection Early Warning System Based on Geoprocessing Service Composition

    Science.gov (United States)

    Samadzadegan, F.; Saber, M.; Zahmatkesh, H.; Joze Ghazi Khanlou, H.

    2013-09-01

    Rapidly discovering, sharing, integrating and applying geospatial information are key issues in the domain of emergency response and disaster management. Due to the distributed nature of data and processing resources in disaster management, utilizing a Service Oriented Architecture (SOA) to take advantages of workflow of services provides an efficient, flexible and reliable implementations to encounter different hazardous situation. The implementation specification of the Web Processing Service (WPS) has guided geospatial data processing in a Service Oriented Architecture (SOA) platform to become a widely accepted solution for processing remotely sensed data on the web. This paper presents an architecture design based on OGC web services for automated workflow for acquisition, processing remotely sensed data, detecting fire and sending notifications to the authorities. A basic architecture and its building blocks for an automated fire detection early warning system are represented using web-based processing of remote sensing imageries utilizing MODIS data. A composition of WPS processes is proposed as a WPS service to extract fire events from MODIS data. Subsequently, the paper highlights the role of WPS as a middleware interface in the domain of geospatial web service technology that can be used to invoke a large variety of geoprocessing operations and chaining of other web services as an engine of composition. The applicability of proposed architecture by a real world fire event detection and notification use case is evaluated. A GeoPortal client with open-source software was developed to manage data, metadata, processes, and authorities. Investigating feasibility and benefits of proposed framework shows that this framework can be used for wide area of geospatial applications specially disaster management and environmental monitoring.

  19. Architectural slicing

    DEFF Research Database (Denmark)

    Christensen, Henrik Bærbak; Hansen, Klaus Marius

    2013-01-01

    a system and a slicing criterion, architectural slicing produces an architectural prototype that contain the elements in the architecture that are dependent on the ele- ments in the slicing criterion. Furthermore, we present an initial design and implementation of an architectural slicer for Java.......Architectural prototyping is a widely used practice, con- cerned with taking architectural decisions through experiments with light- weight implementations. However, many architectural decisions are only taken when systems are already (partially) implemented. This is prob- lematic in the context...... of architectural prototyping since experiments with full systems are complex and expensive and thus architectural learn- ing is hindered. In this paper, we propose a novel technique for harvest- ing architectural prototypes from existing systems, \\architectural slic- ing", based on dynamic program slicing. Given...

  20. Architectural Slicing

    DEFF Research Database (Denmark)

    Christensen, Henrik Bærbak; Hansen, Klaus Marius

    2013-01-01

    a system and a slicing criterion, architectural slicing produces an architectural prototype that contain the elements in the architecture that are dependent on the ele- ments in the slicing criterion. Furthermore, we present an initial design and implementation of an architectural slicer for Java.......Architectural prototyping is a widely used practice, con- cerned with taking architectural decisions through experiments with light- weight implementations. However, many architectural decisions are only taken when systems are already (partially) implemented. This is prob- lematic in the context...... of architectural prototyping since experiments with full systems are complex and expensive and thus architectural learn- ing is hindered. In this paper, we propose a novel technique for harvest- ing architectural prototypes from existing systems, \\architectural slic- ing", based on dynamic program slicing. Given...

  1. Development of the Lymphoma Enterprise Architecture Database: A caBIG(TM Silver Level Compliant System

    Directory of Open Access Journals (Sweden)

    Taoying Huang

    2009-04-01

    Full Text Available Lymphomas are the fifth most common cancer in United States with numerous histological subtypes. Integrating existing clinical information on lymphoma patients provides a platform for understanding biological variability in presentation and treatment response and aids development of novel therapies. We developed a cancer Biomedical Informatics Grid™ (caBIG™ Silver level compliant lymphoma database, called the Lymphoma Enterprise Architecture Data-system™ (LEAD™, which integrates the pathology, pharmacy, laboratory, cancer registry, clinical trials, and clinical data from institutional databases. We utilized the Cancer Common Ontological Representation Environment Software Development Kit (caCORE SDK provided by National Cancer Institute’s Center for Bioinformatics to establish the LEAD™ platform for data management. The caCORE SDK generated system utilizes an n-tier architecture with open Application Programming Interfaces, controlled vocabularies, and registered metadata to achieve semantic integration across multiple cancer databases. We demonstrated that the data elements and structures within LEAD™ could be used to manage clinical research data from phase 1 clinical trials, cohort studies, and registry data from the Surveillance Epidemiology and End Results database. This work provides a clear example of how semantic technologies from caBIG™ can be applied to support a wide range of clinical and research tasks, and integrate data from disparate systems into a single architecture. This illustrates the central importance of caBIG™ to the management of clinical and biological data.

  2. Development of the Lymphoma Enterprise Architecture Database: A caBIG(TM Silver Level Compliant System

    Directory of Open Access Journals (Sweden)

    Taoying Huang

    2009-01-01

    Full Text Available Lymphomas are the fifth most common cancer in United States with numerous histological subtypes. Integrating existing clinical information on lymphoma patients provides a platform for understanding biological variability in presentation and treatment response and aids development of novel therapies. We developed a cancer Biomedical Informatics Grid™ (caBIG™ Silver level compliant lymphoma database, called the Lymphoma Enterprise Architecture Data-system™ (LEAD™, which integrates the pathology, pharmacy, laboratory, cancer registry, clinical trials, and clinical data from institutional databases. We utilized the Cancer Common Ontological Representation Environment Software Development Kit (caCORE SDK provided by National Cancer Institute’s Center for Bioinformatics to establish the LEAD™ platform for data management. The caCORE SDK generated system utilizes an n-tier architecture with open Application Programming Interfaces, controlled vocabularies, and registered metadata to achieve semantic integration across multiple cancer databases. We demonstrated that the data elements and structures within LEAD™ could be used to manage clinical research data from phase 1 clinical trials, cohort studies, and registry data from the Surveillance Epidemiology and End Results database. This work provides a clear example of how semantic technologies from caBIG™ can be applied to support a wide range of clinical and research tasks, and integrate data from disparate systems into a single architecture. This illustrates the central importance of caBIG™ to the management of clinical and biological data.

  3. Development of the Lymphoma Enterprise Architecture Database: A caBIG(tm) Silver level compliant System

    Science.gov (United States)

    Huang, Taoying; Shenoy, Pareen J.; Sinha, Rajni; Graiser, Michael; Bumpers, Kevin W.; Flowers, Christopher R.

    2009-01-01

    Lymphomas are the fifth most common cancer in United States with numerous histological subtypes. Integrating existing clinical information on lymphoma patients provides a platform for understanding biological variability in presentation and treatment response and aids development of novel therapies. We developed a cancer Biomedical Informatics Grid™ (caBIG™) Silver level compliant lymphoma database, called the Lymphoma Enterprise Architecture Data-system™ (LEAD™), which integrates the pathology, pharmacy, laboratory, cancer registry, clinical trials, and clinical data from institutional databases. We utilized the Cancer Common Ontological Representation Environment Software Development Kit (caCORE SDK) provided by National Cancer Institute’s Center for Bioinformatics to establish the LEAD™ platform for data management. The caCORE SDK generated system utilizes an n-tier architecture with open Application Programming Interfaces, controlled vocabularies, and registered metadata to achieve semantic integration across multiple cancer databases. We demonstrated that the data elements and structures within LEAD™ could be used to manage clinical research data from phase 1 clinical trials, cohort studies, and registry data from the Surveillance Epidemiology and End Results database. This work provides a clear example of how semantic technologies from caBIG™ can be applied to support a wide range of clinical and research tasks, and integrate data from disparate systems into a single architecture. This illustrates the central importance of caBIG™ to the management of clinical and biological data. PMID:19492074

  4. Control system devices : architectures and supply channels overview.

    Energy Technology Data Exchange (ETDEWEB)

    Trent, Jason; Atkins, William Dee; Schwartz, Moses Daniel; Mulder, John C.

    2010-08-01

    This report describes a research project to examine the hardware used in automated control systems like those that control the electric grid. This report provides an overview of the vendors, architectures, and supply channels for a number of control system devices. The research itself represents an attempt to probe more deeply into the area of programmable logic controllers (PLCs) - the specialized digital computers that control individual processes within supervisory control and data acquisition (SCADA) systems. The report (1) provides an overview of control system networks and PLC architecture, (2) furnishes profiles for the top eight vendors in the PLC industry, (3) discusses the communications protocols used in different industries, and (4) analyzes the hardware used in several PLC devices. As part of the project, several PLCs were disassembled to identify constituent components. That information will direct the next step of the research, which will greatly increase our understanding of PLC security in both the hardware and software areas. Such an understanding is vital for discerning the potential national security impact of security flaws in these devices, as well as for developing proactive countermeasures.

  5. Rapid architecture alternative modeling (RAAM): A framework for capability-based analysis of system of systems architectures

    Science.gov (United States)

    Iacobucci, Joseph V.

    The research objective for this manuscript is to develop a Rapid Architecture Alternative Modeling (RAAM) methodology to enable traceable Pre-Milestone A decision making during the conceptual phase of design of a system of systems. Rather than following current trends that place an emphasis on adding more analysis which tends to increase the complexity of the decision making problem, RAAM improves on current methods by reducing both runtime and model creation complexity. RAAM draws upon principles from computer science, system architecting, and domain specific languages to enable the automatic generation and evaluation of architecture alternatives. For example, both mission dependent and mission independent metrics are considered. Mission dependent metrics are determined by the performance of systems accomplishing a task, such as Probability of Success. In contrast, mission independent metrics, such as acquisition cost, are solely determined and influenced by the other systems in the portfolio. RAAM also leverages advances in parallel computing to significantly reduce runtime by defining executable models that are readily amendable to parallelization. This allows the use of cloud computing infrastructures such as Amazon's Elastic Compute Cloud and the PASTEC cluster operated by the Georgia Institute of Technology Research Institute (GTRI). Also, the amount of data that can be generated when fully exploring the design space can quickly exceed the typical capacity of computational resources at the analyst's disposal. To counter this, specific algorithms and techniques are employed. Streaming algorithms and recursive architecture alternative evaluation algorithms are used that reduce computer memory requirements. Lastly, a domain specific language is created to provide a reduction in the computational time of executing the system of systems models. A domain specific language is a small, usually declarative language that offers expressive power focused on a particular

  6. 21 CFR 11.30 - Controls for open systems.

    Science.gov (United States)

    2010-04-01

    ... 21 Food and Drugs 1 2010-04-01 2010-04-01 false Controls for open systems. 11.30 Section 11.30... RECORDS; ELECTRONIC SIGNATURES Electronic Records § 11.30 Controls for open systems. Persons who use open systems to create, modify, maintain, or transmit electronic records shall employ procedures and...

  7. CCPA: Component-based communication protocol architecture for embedded systems

    Institute of Scientific and Technical Information of China (English)

    DAI Hong-jun; CHEN Tian-zhou; CHEN Chun

    2005-01-01

    For increased and various communication requirements of modem applications on embedded systems, general purpose protocol stacks and protocol models are not efficient because they are fixed to execute in the static mode. We present the Component-Based Communication Protocol Architecture (CCPA) to make communication dynamic and configurable. It can develop, test and store the customized components for flexible reuse. The protocols are implemented by component assembly and support by configurable environments. This leads to smaller memory, more flexibility, more reconfiguration ability, better concurrency, and multiple data channel support.

  8. System Architecture and Mobility Management for Mobile Immersive Communications

    Directory of Open Access Journals (Sweden)

    Mehran Dowlatshahi

    2007-01-01

    Full Text Available We propose a system design for delivery of immersive communications to mobile wireless devices based on a distributed proxy model. It is demonstrated that this architecture addresses key technical challenges for the delivery of these services, that is, constraints on link capacity and power consumption in mobile devices. However, additional complexity is introduced with respect to application layer mobility management. The paper proposes three possible methods for updating proxy assignments in response to mobility management and compares the performance of these methods.

  9. Gain and loss in open quantum systems

    Science.gov (United States)

    Eleuch, Hichem; Rotter, Ingrid

    2017-06-01

    Photosynthesis is the basic process used by plants to convert light energy in reaction centers into chemical energy. The high efficiency of this process is not yet understood today. Using the formalism for the description of open quantum systems by means of a non-Hermitian Hamilton operator, we consider initially the interplay of gain (acceptor) and loss (donor). Near singular points it causes fluctuations of the cross section which appear without any excitation of internal degrees of freedom of the system. This process occurs therefore very quickly and with high efficiency. We then consider the excitation of resonance states of the system by means of these fluctuations. This second step of the whole process takes place much slower than the first one, because it involves the excitation of internal degrees of freedom of the system. The two-step process as a whole is highly efficient, and the decay is biexponential. We provide, if possible, the results of analytical studies, otherwise characteristic numerical results. The similarities of the obtained results to light harvesting in photosynthetic organisms are discussed.

  10. Computing Architecture of the ALICE Detector Control System

    CERN Document Server

    Augustinus, A; Moreno, A; Kurepin, A N; De Cataldo, G; Pinazza, O; Rosinský, P; Lechman, M; Jirdén, L S

    2011-01-01

    The ALICE Detector Control System (DCS) is based on a commercial SCADA product, running on a large Windows computer cluster. It communicates with about 1200 network attached devices to assure safe and stable operation of the experiment. In the presentation we focus on the design of the ALICE DCS computer systems. We describe the management of data flow, mechanisms for handling the large data amounts and information exchange with external systems. One of the key operational requirements is an intuitive, error proof and robust user interface allowing for simple operation of the experiment. At the same time the typical operator task, like trending or routine checks of the devices, must be decoupled from the automated operation in order to prevent overload of critical parts of the system. All these requirements must be implemented in an environment with strict security requirements. In the presentation we explain how these demands affected the architecture of the ALICE DCS.

  11. ARCHITECTURE OF MANUFACTURING EXECUTION SYSTEM IN THE EXTENDED ENTERPRISE

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    The extended enterprise is formed according to the philosophy of dispersed networked manufacturing. Manufacturing execution system (MES) can close the information gap which exists between device control system and production information management system. The functions and the web-based architecture of the MES in the extended enterprise are introduced. Using the cooperating system models of object-oriented and distributed agents and CORBA, all objects keep to uniform interface standards and are easily inserted to object request broker. The utilization of distributed MES in extended enterprise can adapt fast change of manufacturing environment and resource. It also can improve the independent management capability of manufacturing cell and the enterprise response capability to global economic competition.

  12. Intelligent Architecture for Enhanced Observability for Active Distribution System

    DEFF Research Database (Denmark)

    Pokhrel, Basanta Raj; Nainar, Karthikeyan; Bak-Jensen, Birgitte

    2017-01-01

    to utilize advanced solutions by observing the system state in real time. Existing distribution automation and control system have to be upgraded to meet this technological challenge. This necessitates the use of real time system states of the grid which is a crucial factor for system operation in higher...... for active distribution network which satisfies the need for higher observability reach with less field observation. Improved state estimation with composite load forecasting model is aimed for enhanced observability. This paper also summarizes the application of intelligent architecture in the operation......There is a rapid increase of renewable energy resources (RE) and demand response resources (DRR) in the distribution networks. This is challenging for the reliable and stable operation of the grid. So, to ensure secure, optimized and economical operation in such active distribution grids they need...

  13. Open Location Management in Automated Warehousing Systems

    NARCIS (Netherlands)

    Y. Yu (Yugang); M.B.M. de Koster (René)

    2009-01-01

    textabstractA warehouse needs to have sufficient open locations to be able to store incoming shipments of various sizes. In combination with ongoing load retrievals open locations gradually spread over the storage area. Unfavorable positions of open locations negatively impact the average load retri

  14. Equilibrium time correlation functions in open systems

    CERN Document Server

    Zhu, Jinglong; Agarwal, Animesh; Site, Luigi Delle

    2014-01-01

    We study equilibrium time correlation functions for liquid water at room temperature employing the Molecular Dynamics (MD) adaptive resolution method AdResS in its Grand Canonical formulation (GC-AdResS). This study introduces two technical innovations: the employment of a local thermostat that acts only in the reservoir and the consequent construction of an "ideal" Grand Canonical reservoir of particles and energy. As a consequence the artificial action of a thermostat in the calculation of equilibrium time correlation functions of standard NVT simulations is efficiently removed. The success of the technical innovation provides the basis for formulating a profound conceptual problem, that is the extension of Liouville theorem to open systems (Grand Canonical ensemble), a question, so far, treated neither in MD nor (in general) in statistical physics.

  15. On the design of multimedia software and future system architectures

    Science.gov (United States)

    de With, Peter H. N.; Jaspers, Egbert G.

    2004-04-01

    A principal challenge for reducing the cost for designing complex systems-on-chip is to pursue more generic systems for a broad range of products. For this purpose, we explore three new architectural concepts for state-of-art video applications. First, we discuss a reusable scalable hardware architecture employing a hierarchical communication network fitting with the natural hierarchy of the application. In a case study, we show that MPEG streaming in DTV occurs at high level, while subsystems communicate at lower levels. The second concept is a software design that scales over a number of processors to enable reuse over a range of VLSI process technologies. We explore this via an H.264 decoder implementation scaling nearly linearly over up to eight processors by applying data partitioning. The third topic is resource-scalability, which is required to satisfy realtime constraints in a system with a high amount of shared resources. An example complexity-scalable MPEG-2 coder scales the required cycle budget with a factor of three, in parallel with a smooth degradation of quality.

  16. A distributed architecture for activating the peripheral nervous system

    Science.gov (United States)

    Andreu, David; Guiraud, David; Souquet, Guillaume

    2009-04-01

    We present a new system for functional electrical stimulation (FES) applications based on networked stimulation units. They embed an advanced analog circuit, which provides multipolar and multiphasic stimulation profiles, and digital circuits, which ensure safety, locally executed programmed profiles, and communication with the master controller. This architecture is thus based on distributed stimulation units (DSU) that need only a two-wire bus to communicate, regardless of the number of poles of each DSU-driven electrode. This structure minimizes the required bandwidth between master and distributed units, increases the safety and stimulation features and decreases the complexity of the surgical approach. We have successfully tested this network-based stimulation architecture on benchtop stimulators. This original approach allows broad exploration of all possible methods to stimulate peripheral nerves, particularly in the goal of restoring the motor function. It provides a powerful research device to determine the optimal, least aggressive and the most efficient way to activate the peripheral nervous system using an implanted FES system that is less invasive than other existing devices.

  17. Comparing the architecture of Grid Computing and Cloud Computing systems

    Directory of Open Access Journals (Sweden)

    Abdollah Doavi

    2015-09-01

    Full Text Available Grid Computing or computational connected networks is a new network model that allows the possibility of massive computational operations using the connected resources, in fact, it is a new generation of distributed networks. Grid architecture is recommended because the widespread nature of the Internet makes an exciting environment called 'Grid' to create a scalable system with high-performance, generalized and secure. Then the central architecture called to this goal is a firmware named GridOS. The term 'cloud computing' means the development and deployment of Internet –based computing technology. This is a style of computing in an environment where IT-related capabilities offered as a service or users services. And it allows him/her to have access to technology-based services on the Internet; without the user having the specific information about this technology or (s he wants to take control of the IT infrastructure supported by him/her. In the paper, general explanations are given about the systems Grid and Cloud. Then their provided components and services are checked by these systems and their security.

  18. Middleware Architecture for the Interconnection of Distributed and Parallel Systems

    Directory of Open Access Journals (Sweden)

    Ovidiu Gherman

    2012-01-01

    Full Text Available Grid computing is a fast evolving technology, bringing more computing power to its users. Two main directions are observable: creating dedicated supercomputers for scientific and commercial tasks and creating distributed commodity-based systems. The first ones are usually much expensive, but have the advantage of performance, better control and uniformity in platforms. The second one is more affordable but lacks in flexibility and easy maintenance. The computing necessities that often require supplementary computing power for certain time periods are better satisfied by interconnecting available resources than buying new, expensive ones. But interconnecting platforms – sometimes radically different – can be a difficult task. The proliferation of hybrid parallel computing systems can be even more complicated because it puts in contact systems with various operating flows at the parallelism level. In this frame, the present article proposes a new middleware architecture that can connect multiple parallel or distributed resources, of different types, allowing unitary resource utilization and reservation for the user’s jobs. The new architecture is described functionally and structurally.

  19. A distributed architecture for activating the peripheral nervous system.

    Science.gov (United States)

    Andreu, David; Guiraud, David; Souquet, Guillaume

    2009-04-01

    We present a new system for functional electrical stimulation (FES) applications based on networked stimulation units. They embed an advanced analog circuit, which provides multipolar and multiphasic stimulation profiles, and digital circuits, which ensure safety, locally executed programmed profiles, and communication with the master controller. This architecture is thus based on distributed stimulation units (DSU) that need only a two-wire bus to communicate, regardless of the number of poles of each DSU-driven electrode. This structure minimizes the required bandwidth between master and distributed units, increases the safety and stimulation features and decreases the complexity of the surgical approach. We have successfully tested this network-based stimulation architecture on benchtop stimulators. This original approach allows broad exploration of all possible methods to stimulate peripheral nerves, particularly in the goal of restoring the motor function. It provides a powerful research device to determine the optimal, least aggressive and the most efficient way to activate the peripheral nervous system using an implanted FES system that is less invasive than other existing devices.

  20. Architectural geometry

    KAUST Repository

    Pottmann, Helmut

    2014-11-26

    Around 2005 it became apparent in the geometry processing community that freeform architecture contains many problems of a geometric nature to be solved, and many opportunities for optimization which however require geometric understanding. This area of research, which has been called architectural geometry, meanwhile contains a great wealth of individual contributions which are relevant in various fields. For mathematicians, the relation to discrete differential geometry is significant, in particular the integrable system viewpoint. Besides, new application contexts have become available for quite some old-established concepts. Regarding graphics and geometry processing, architectural geometry yields interesting new questions but also new objects, e.g. replacing meshes by other combinatorial arrangements. Numerical optimization plays a major role but in itself would be powerless without geometric understanding. Summing up, architectural geometry has become a rewarding field of study. We here survey the main directions which have been pursued, we show real projects where geometric considerations have played a role, and we outline open problems which we think are significant for the future development of both theory and practice of architectural geometry.