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2007 AIAA InfoTech at Aerospace Conference

作者： Dvorak, Daniel D. Ingham, Michel D. Morris, J. Richard Gersh, John NASA Jet Propulsion Laboratory California Institute of Technology Pasadena CA 91109 United States Applied Physics Laboratory Johns Hopkins University Laurel MD 20723 United States Planning and Execution Systems Section M/S 301-270 United States AIAA United States Flight Software Systems Engineering and Architectures Group M/S 301-225 Planning and Sequencing Systems Group M/S 301-250D System and Information Sciences Group M/S 2-236 United States

ISBN: (纸本)1563478935

Operating robotic space missions via time-based command sequences has become a limiting factor in the exploration, defense, and commercial sectors. Command sequencing was originally designed for comparatively simple and predictable missions, with safe-mode responses for most faults. This approach has been increasingly strained to accommodate today's more complex missions, which require advanced capabilities like autonomous fault diagnosis and response, vehicle mobility with hazard avoidance, opportunistic science observations, etc. Goal-based operation changes the fundamental basis of operations from imperative command sequences to declarative specifications of operational intent, termed goals. Execution based on explicit intent simplifies operator workload by focusing on what to do rather than how to do it. The move toward goal-based operations, which has already begun in some space missions, involves changes and opportunities in several places: operational processes and tools, human interface design, planning and scheduling, control architecture, fault protection, and verification and validation. Further, the need for future interoperation among multiple goal-based systems suggests that attention be given to areas for standardization. This overview paper defines the concept of goal-based operations, reviews a history of steps in this direction, and discusses the areas of change and opportunity through comparison with the prevalent operational paradigm of command sequencing.

关键词： Robotics

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Fault Management based on peer-to-peer paradigms;A case study report from the CELTIC project Madeira

Fault Management based on peer-to-peer paradigms;A case stud...

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IFIP/IEEE International Symposium on Integrated Network Management

作者： Markus Leitner Philipp Leitner Martin Zach Sandra Collins Claire Fahy System Engineering Siemens AG Vienna Austria Network Management Research Centre Ericsson Research and Development Ireland Dublin Ireland Waterford Institute of Technology TSSG-Telecommunications Software & Systems Group Waterford Ireland

We present an approach to fault management based on an architecture for distributed and collaborative network management as developed in the CELTIC project Madeira. It uses peer-to-peer communication facilities and a logical overlay network facilitating decentralized and iterative alarm processing and correlation. We argue that such an approach might help to overcome key challenges that are posed by NGN scenarios to traditional centralized network management systems. Its feasibility is demonstrated by means of a case study from the area of wireless mesh networks, where an application prototype has been developed.

关键词： Project management Peer to peer computing Telecommunication network management Energy management Power system management Research and development management software development management Technology management engineering management Next generation networking

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PEM: The small company-dedicated software process quality evaluation method combining CMMISM and ISO/IEC 14598

PEM: The small company-dedicated software process quality ev...

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作者： Trudel, Sylvie Lavoie, Jean-Marc Paré, Marie-Claude Suryn, Witold Software Test Center CRIM Bureau 100 550 rue Sherbrooke Ouest Montréal Qué. H3A 1B9 Canada Consultations Jean-Marc Lavoie Inc. 5815 Parnasse Brossard Qué. J4W 2C7 Canada Motorola Canada Software Center 700 Wellington Street Montréal Qué. H3C 3S4 Canada Département de Génie Logiciel et TI École de Technologie Supérieure 1100 rue Notre-Dame Ouest Montréal Qué. H3C 1K3 Canada Canada Trisotech Canada Motorola GSG Canada Canada École de Technologie Supérieure Montreal Canada GELOG : IQUAL Software Quality Engineering Research Group École de Technologie Supérieure Canada ISO/IEC SC7 - System and Software Engineering Canada

Many small software organizations have recognized the need to improve their software product. Evaluating the software product alone seems insufficient since it is known that its quality is largely dependant on the process that is used to create it. Thus, small organizations are asking for evaluation of their software processes and products. The ISO/IEC 14598-5 standard is already used as a methodology basis for evaluating software products. This article explores how it can be combined with the CMMI to produce a methodology that can be tailored for process evaluation in order to improve their software processes. © Springer Science + Business Media, Inc. 2006.

关键词： ISO Standards

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Managing Neighbor Replication Transactions in Distributed systems

Managing Neighbor Replication Transactions in Distributed Sy...

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2006年国际电子、工程及科学领域的分布式计算和应用学术研讨会

作者： Noraziah Ahmad Mustafa Mat Deris Norhayati Rosli Yazid Mohd Saman Rabiei Mamat W.N.Wan Nik Shuhadah Faculty of Comp.System & Software Engineering University College of Engineering & Technology Malaysia Mustafa Mat Deris Faculty of Information & Technology Multimedia University College of Technology Tun Hussein Onn Group Faculty Chemical Engineering & Natural Resources University College of Engineering & Technology Malaysia Faculty of Science and Technology University College of Science & Technology Malaysia

This paper presents a new design to manage neighbor replication for distributed database *** address how to build reliable system for managing transaction on Neighbor Replication Grid(NRG) in terms to preserve the data consistency and support advance *** first recall the model and technique of NRG that impose neighbors binary vote assignment to its logical grid structure on data *** on this model,we extent our work to design system for managing NRG transaction both in normal and failure *** present a result of correctness study on the system and finally an implementation of the system.

关键词： Distributed Database Replication Consistency Transaction Model Transaction Processing and Correctness

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Guaranteeing the continuous and high available stream service in clustered media servers

Guaranteeing the continuous and high available stream servic...

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Proceedings of the International Conference on Parallel and Distributed Processing Techniques and Applications, PDPTA'04

作者： Jung, Sung-In Cho, IL-Hyun Lee, Cheol-Hoon Internet Server Group Electron. and Telecom. Res. Inst. Daejon Korea Republic of System Software Laboratory Department of Computer Engineering Chungnam National University Daejon Korea Republic of

ISBN: (纸本)1932415262

The stream contents services are becoming more popular due to the growth of high-speed network technology and client devices such as set-top-box and HDTV. Thus, we should prepare the contents streaming media servers supporting service availability in order to guarantee continuous service on the event of system failures or temporary network disconnections. In this paper, we propose LSS (Log Stream Status) and RRD (Ready Resource for instant Delivery) mechanisms. Although these mechanisms required additional operations, we found that they could be applied to clustered media servers with minimum overhead. Additionally, these mechanisms helped service availability up.

关键词： Acoustic streaming

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Fighting class name clashes in Java component systems

Lecture Notes in Computer Science (including subseries Lectu...

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Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 2003年 2789卷 106-109页

作者： Hnětynka, Petr Tůma, Petr Distributed System Research Group Department of Software Engineering Charles University Malostranske namesti 25 118 00 Prague 1 Czech Republic

This paper deals with class and interface name clashes in Java component systems that occur because of evolutionary changes during the lifecycle of a component application. We show that the standard facilities of the Java type system do not provide a satisfactory way to deal with the name clashes, and present a solution based on administering the names of classes and interfaces with a version identifier using a byte code manipulation tool. We provide a proof of concept implementation. © Springer-Verlag Berlin Heidelberg 2003.

关键词： Java programming language

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A TV program generation system using digest video scenes and a scripting markup language

A TV program generation system using digest video scenes and...

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Annual Hawaii International Conference on system Sciences (HICSS)

作者： Y. Shirota T. Hashimoto A. Nadamoto T. Hattori A. Iizawa K. Tanaka K. Sumiya Software Research Center Imaging System Business Group Ricoh Company Limited Japan Division of Information and Media Science Graduate School of Science and Technology Kobe University Japan Department of Computer and Systems Engineering Graduate School of Science and Technology Kobe University Japan Division of Urban Information Systems Research Center for Urban Safety and Security Kobe University Japan

ISBN: (纸本)0769509819

This paper describes a TV program generation system using digest video scenes that are retrieved from video streams with the program indexes. The key features of the system are: (1) TV programs can be dynamically generated from digest video scenes selected by user preference. (2) Directions can be added using a happiness or sadness level based on the user preferences. (3) Personalized TV programs for an individual viewer can be made. The procedures taken by the system are as follows: (1) Conjunctive expressions between scenes are automatically generated; (2) Emotional expressions are automatically generated by user preference; (3) TV program metaphors are defined; (4) Direction templates corresponding to the metaphors are defined; (5) These expressions and definitions are coded using a markup language, and (6) Contents such as virtual characters and movies are synchronized. The resultant program can be shown on a TV set.

关键词： Layout Markup languages TV broadcasting Satellite broadcasting Information retrieval Broadcast technology Digital TV Companies Streaming media Character generation

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Wireless and wireline convergence

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BELL LABS TECHNICAL JOURNAL 1997年第3期2卷 194-206页

作者： Bergren, MH Bolliger, BD Earl, DT Grossmann, DL Ho, BW Thompson, RJ 5ESS Wireless Product Management Global 5ESS AMPS and System Software Department Lucent's Network Systems Naperville Illinois PCS Offer Engineering Lucent's Network Systems Naperville Illinois AMPS Systems Engineering Department Lucent's Network Systems Naperville Illinois Service Node Architecture and Performance Department Lucent's Network Systems Naperville Illinois AUTOPLEX® System 1000 Architecture and Estimation Group Lucent's Network Systems Naperville Illinois

Recent changes in the United States telecommunications industry-both regulatory and market driven-provide an environment for integrating wireless and wireline services and the infrastructure used to provide them. Changes in the industry have created competition in local access, deregulation that allows bundling of services and one-stop shopping, and multiple personal communication services (PCS) licensees, each with the desire to differentiate its service offering with value-added capabilities. Integrating wireless and wireline services enables service providers to offer a seamless wireless/wireline service and help control infrastructure and ongoing administrative costs. This paper highlights some advantages for integrating these systems in the U.S. market today. We describe a vision of the long-term services architecture for a functional solution and several near-term product concepts designed to provide an integrated wireless/wireline service.

关键词： Personal communication systems

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A spectral approach to compute the mean performance measures of the queue with low-order BMAP input

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Journal of Applied Mathematics and Stochastic Analysis 1997年第4期16卷 349-360页

作者： Lee, Ho Woo Moon, Jong Min Park, Jong Keun Kim, Byung Kyu Sung Kyun Kwan University Dept. of Systems Management Engineering Su Won 440-746 South Korea SE Application Prog. Info Tech. Group Division LG CNS Good Morning Bldg. Seoul 150-712 Yeo Eui Do South Korea I/O System Team Computer System Department Computer and Software Research Laboratory Dae Jon 305-350 South Korea Itsweb CRM Team R and D Center 789-4 Young Bldg. Seoul 135-080 Yok Sam Dong Kang Nam South Korea

This paper targets engineers and practitioners who want a simple procedure to compute the mean performance measures of the Batch Markovian Arrival process (BMAP/G/1) queueing system when the parameter matrices order is very low. We develop a set of system equations and derive the vector generating function of the queue length. Starting from the generating function, we propose a spectral approach that can be understandable to those who have basic knowledge of M/G/1 queues and eigenvalue algebra. ©2003 by North Atlantic Science Publishing Company.

关键词： BMAP/G/1 Queue Spectral Approach

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AN OBJECT-ORIENTED ANALYSIS OF A BISDN CONTROL-system WITH A FOCUS ON THE UNI PROTOCOL OBJECT

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INTERNATIONAL JOURNAL OF COMMUNICATION systemS 1994年第2期7卷 113-129页

作者： OUIBRAHIM, H PATTENIER, FJ AT&T NS NL Postbus 18 1270 AA Huizen The Netherlands Hamza Ouibrahim:obtained his B.Sc M.Sc and Ph.D in 1981 1982 and 1986 respectively all in Electrical Engineering from Syracuse University Syracuse New York. In 1986 he joined the Electrical Engineering Department at the Watson School of Engineering at the State University of New York at Binghamton as Assistant Professor. Since 1988 he has been with the Forward Looking Work Department of AT&T-NSNL in the Netherlands where he is project manager responsible for a group of research engineers working on signalling for BISDN networks. He represents AT&T-NSNL in standards bodies such as ITU-TSS and ETSI. He has been involved in European Research projects (Research and development in Advanced Communications in Europe) developing a signalling system for the integrated broadband communications. His current interests include ATM and signalling for broadband networks. He is the author of numerous papers and an IEEE member. Frans Pattenier:finished his study in Electronic Engineering in 1987 in the Netherlands. In 1983 he joined the Dutch Police Communication Service and in 1988 the National Institute for Public Health and Environment Protection. He joined the Forward Looking Work Department of AT&T-NSNL in 1991. In the first five of his career he was involved in hardware development for analogue digital and microprocessor systems for dataacquisition and communication equipment. Later software-development became more important for him (using Pascal C and C+ +) and he is now involved in projects which include aspects such as signalling protocols and call processing. He thinks the real challenge is to complete a project using object-oriented and structured techniques for every phase on every level.

The control system of a BISDN network will undoubtedly be very complex to design, implement and maintain. Its complexity has led researchers to look for ways of breaking down the problem into smaller and manageable parts. This has motivated the use of an object-oriented approach to analyse and comprehend the BISDN control system. This paper thus presents an object-oriented analysis (OOA) of a BISDN control system. This analysis is based on a method introduced by Coad and Yourdon and comprises five steps. All five steps, namely identifying subjects, identifying objects, identifying structures, defining attributes, and defining operations, will be worked out in detail with an emphasis on the user network interface (UNI) signalling protocol object. Four subjects, nine objects, and three structures are identified in the problem space at hand. This structuring offers a framework to analyse in detail the three aspects, data, structure and dynamic behaviour, of the UNI signalling protocol. A parallel between this approach and the well known approach used by the International Telecommunication Union (ITU) for specifying signalling protocols and contained in Recommendation I.130 is drawn. The Coad and Yourdon OOA approach applied to a BISDN control system can be used for the analysis of different aspects of such systems. This paper focuses on the UNI signalling protocol object which leads to a complete specification. Any protocol resulting from such analysis can be claimed to be object-oriented protocol. This approach offers modularity and thus offers a way of structuring the problem space into identifiable objects and data. Full benefits of object orientation can be gained only in the consistent use of object orientation throughout all steps in the development process. The proposed approach allows one to create libraries of generic procedures which can be reused in specific implementations.

关键词： ATM BISDN CCITT RECOMMENDATION I.130 CONTROL system OOA PROTOCOL SIGNALING

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