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European Conference on Radiation and its Effects on Components and systems (RADECS)

作者： Jonathan A. Pellish Michael A. Xapsos Kenneth A. LaBel Paul W. Marshall David F. Heidel Kenneth P. Rodbell Mark C. Hakey Paul E. Dodd Marty R. Shaneyfelt James R. Schwank Robert C. Baumann Xiaowei Deng Andrew Marshall Brian D. Sierawski Jeffrey D. Black Robert A. Reed Ronald D. Schrimpf Hak S. Kim Melanie D. Berg Michael J. Campola Mark R. Friendlich Christopher E. Perez Anthony M. Phan Christina M. Seidleck Radiation Effects and Analysis Group GSFC NASA Greenbelt MD USA Radiation Effects and Analysis Group NASA/GSFC Code 561.4 Greenbelt MD USA NASA consultant Brookneal VA USA IBM T. J. Watson Research Center Yorktown Heights NY USA IBM System and Technology Group Essex Junction VT USA Sandia National Laboratories Albuquerque NM USA Texas Instruments Dallas TX USA Department of Electrical Engineering and Computer Science Vanderbilt University Nashville TN USA GSFC MEI Technologies NASA Greenbelt MD USA MEI Technologies (NASA/GSFC) Greenbelt MD USA

A 1 GeV/u 56 Fe ion beam allows for true 90° tilt irradiations of various microelectronic components and reveals relevant upset trends for an abundant element at the GCR flux energy peak.

关键词： Random access memory Radiation effects CMOS integrated circuits Field programmable gate arrays NASA Laboratories

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Analyzing distribution and evolution of research interests by term extraction and ontology learning

Analyzing distribution and evolution of research interests b...

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9th International Conference on Web-Age Information Management, WAIM 2008

作者： Gao, Zhiqiang Zhu, Wanying Qu, Yuzhong Huang, Zhisheng School of Computer Science and Engineering Southeast University Si Pai Lou 2 Nanjing China Jiang Su LSYW System Integration Co. Ltd. Ren Min Zhong Lu 220 Wuxi China Department of Computer Science Vrije Universiteit Amsterdam Netherlands

ISBN: (纸本)9780769531854

This paper introduces DynamicView, a novel Semantic Web application, for users to query, browse and visualize distribution and evolution of research interests in temporal, spatial and ontological dimensions. We present motivation and requirements for a system like DynamicView, and discuss its architecture. We outline main algorithms for term extraction from web pages of researchers and ontology learning from digital libraries, and sketch visualizations we used in the interface. © 2008 IEEE.

关键词： Digital libraries

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An Efficient Algorithm of Role Mapping across Security Domains in Data-Sharing Environments

An Efficient Algorithm of Role Mapping across Security Domai...

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International Conference on Web-Age Information Management Workshops (WAIM)

作者： Wang Xiaoqing Gu Tianyang Guo Yong Zheng Yanxing Zong Jianjian Department of Computer Science and Technology Beijing Institute of System Engineering Tsinghua University China Beijing Institute of System Engineering China

ISBN: (纸本)9781424432004;9780769531854

There are many distributed, autonomous, heterogeneous and dynamic data sources in data sharing environment. In order to achieve the goal of global data sharing without compromising the security of local domain respectively, it is necessary to establish an access control mechanism to satisfy the security need of data sharing across multi-domain. In this paper, a criterion based algorithm for role mapping across multi-domain is proposed. The algorithm not only resolves the conflicts of cyclic inheritance and separation of duties, but also makes the establishment of role mapping more efficiently by preserving the historical information of role mapping paths established successfully before. Evaluation by access instances shows that the algorithm meets the demands of access control in multi-domains and scales very well.

关键词： Security Algorithm design and analysis Access control Heuristic algorithms Distributed databases Data mining Manuals

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Multiobjective model for multicast overlay networks over IP/MPLS using MOEA

Multiobjective model for multicast overlay networks over IP/...

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International Conference on Optical Network Design and Modeling, ONDM

作者： Juan Montoya Yezid Donoso Edwin Montoya Diego Echeverri Department of Computer Science EAFIT University Medellin Colombia Department of System of Computer Engineering University of Andes Bogota Colombia

Multicast plays an important role in supporting a new generation of applications. At present and for different reasons, technical and non-technical, multicast IP hasnpsilat yet been totally adopted for Internet. During recent years, an active area of research is that of implementing this kind of traffic in the application layer where the multicast functionality isnt a responsibility of the routers but that of the hosts, which we know as Multicast Overlay Networks (MON). In this article, routing in an MON is put forward as a multiobjective optimization problem (MOP) where two functions are optimized: 1) the total end to end delay of the multicast tree and 2) the maximum link utilization. The simultaneous optimization of these two functions is an NP-Complete problem and to solve this we suggest using Multiobjective Evolutionary Algorithms (MOEA), specifically NSGA-II.

关键词： Multiprotocol label switching Routing Delay Unicast Stress Internet NP-complete problem Evolutionary computation Telecommunication traffic IP networks

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Optimal version-upgrade problem based on stochastic differential equations for Open Source Software

Optimal version-upgrade problem based on stochastic differen...

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5th International Conference on Quality and Reliability, ICQR 2007

作者： Tamura, Yoshinobu Yamada, Shigeru Department of Computer Science Faculty of Applied Information Science Hiroshima Institute ot Technoloey Miyake 2-1-1 Saeki-ku Hiroshima-shi. 731-5193 Japan Department of Social System Engineering Faculty of Engineering Tottori University Minami 4-101 Koyama Tottori-shi 680-8552 Japan

ISBN: (纸本)9789810594046

The current software development environment has been changing into new development paradigms such as concurrent distributed development environment and the so-called open source project by using network computing technologies. New distributed development paradigm typified by such open source project will evolve at a rapid pace in the future. Especially, OSS (Open Source Software) systems which serve as key components of critical infrastructures in the society are still ever-expanding now. We focus on OSS developed under open source project. In this paper, we propose a software reliability growth model based on stochastic differential equations in order to consider the active state of the open source project. Especially, we assume that the software failure intensity depends on the time, and the software fault-report phenomena on the bug tracking system keep an irregular state. Also, we analyze actual software fault count data to show numerical examples of software reliability assessment for the OSS. Moreover, it has been necessary to manage the software development process in terms of reliability, effort, and version-upgrade time. In this paper, we find the optimal total version-upgrade time based on the total expected software maintenance effort. We show that the proposed model can assist improvement of quality for OSS systems developed under the open source project. © 2008 ICQR.

关键词： Open source software

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A low energy bio sensor node processor for continuous healthcare monitoring system

A low energy bio sensor node processor for continuous health...

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IEEE Asian Conference on Solid-State Circuits (ASSCC)

作者： Hyejung Kim Yongsang Kim Hoi-Jun Yoo Semiconductor System Laboratory Department of Electrical Engineering and Computer Science KAIST Daejeon South Korea

A low energy sensor node processor is proposed for continuous healthcare monitoring application. The bio signal processing block is integrated into the processor to support the compression and the encryption. A quadratic level bio signal compression algorithm is proposed to reduce the transmission power consumption and the memory capacity. And the AES-128 data encryption datapath is integrated for user privacy and authentication. The CR is 8.4:1, the PRD is 0.897% and the compression rate is 6.4 Mbps. The encryption rate is 1.6 Mbps and the normalized performance is 0.4b/cycle/k-gates which is the highest value compared to the related works. The proposed processor consumes 0.56 nJ/bit at 1V supply voltage with 1MHz operating frequency in 0.25-mum CMOS process.

关键词： Biosensors Medical services Monitoring Cryptography Signal processing algorithms Biomedical signal processing Compression algorithms Energy consumption Data privacy Authentication

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Data-Flow Based Analysis of Java Bytecode Vulnerability

Data-Flow Based Analysis of Java Bytecode Vulnerability

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International Conference on Web-Age Information Management Workshops (WAIM)

作者： Gang Zhao Hua Chen Dongxia Wang Department of Computer science and Technology Tsinghua University China Beijing Institute of System Engineering China

ISBN: (纸本)9781424432004;9780769531854

Java is widely used because its security and platform independence. Although Java's security model is designed for protecting users from untrusted sources, Java's security is not under fully control at the application level. A large number of Java classes or Java class libraries have been used in network iquest application development, whose source is unknown and trust unassured. Analyzing the vulnerability of Java bytecode is helpful for assessing the security of untrusted Java components. The data-flow based methods suit to vulnerability analysis because their data propagation character. The paper is about using data-flow based methods to analyze the vulnerability of Java program in bytecode.

关键词： Java Security Databases Libraries Analytical models Writing Availability

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Comparative Evaluation of Change Propagation Approaches towards Resilient Software Evolution

Comparative Evaluation of Change Propagation Approaches towa...

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International Conference on Software engineering Advances (ICSEA)

作者： Noraini Ibrahim Wan M. Nasir Wan Kadir Safaai Deris Software Engineering Department Faculty of Computer Science and Information System Universiti Teknologi Malaysia Malaysia

Producing software that is adaptable to the rapid environmental changes and the dynamic nature of the business life-cycle is extensively becoming a topical issue in the software evolution. In this context, change propagation (CP) process is one of the critical parts in the software change management. Traditional strategies have projected more complex ways, resulting to substantial failures and risks. This paper presents an investigation and highlights on the desired criteria to provide better means to simplify the complicated CP tasks. The evaluation results may be used as a foundation in improving CP approaches that provide significant challenges in software evolution.

关键词： Software engineering Software systems Software maintenance computer science Information systems Programming Large-scale systems Delay Scheduling Costs

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Industrial Application Development with Open Source Approach

Industrial Application Development with Open Source Approach

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International Conference on Software engineering Advances (ICSEA)

作者： Showole Aminat Suhaimi Ibrahim Shamsul Sahibuddin Faculty of Computer Science and Information System Software Engineering Department Universiti Teknologi Malaysia Malaysia

Much as software is very useful as a driving force of physical machine in assisting many aspects of human endeavor, it is also often accomplished with delicate aspect especially when correct specification and quality are not met. Ranging from less critical applications (such as payroll), to highly sophisticated application (such as health care system) as well as mission critical applications (such as space mission), failures in the functionality of these systems are often accompanied by disproportionate heavy losses to the respective users. In addition, industrial application is performance-intensive and cannot afford to fail. In this paper, our novel open onions ontology was presented which approaches software development from a layered point of view, the open source approach as an alternative methodology for industrial application development was proposed. Various issues involved in industrial applications were reviewed, the current industrial development methodologies were discussed and possibilities of adopting open source were explored.

关键词： Application software Open source software Software quality Humans Medical services Mission critical systems Space missions Ontologies Programming computer industry

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An Intelligent Robot based on Sound Source Localization and Ultrasound Distance Detection

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自动化技术与应用 2008年第11期27卷 22-28页

作者： Charlie Shucheng ZHU Mickey Zhen WANG Tina Wei ZHUO Linzhong ZHU Department of Electrical and Computer Engineering The Hong Kong University of Science and Technology HK Department of Computer Control System Shajiao B Power Station Ltd. Shenzhen 518102 China

In both industrial and research areas of electronic engineering,Sound Source Localization for robot control has always been an interesting subject to be further *** some dangerous situation,especially when a special driver is required to implement a particular task,the device should be able to combine robotics control technology with Sound Source Localization,and take actions according to the different response *** this research project,a multifunc-tional model driver,named "Mobile Island",has been designed and built up by integrating the Emulator 8051 micro-controller,Intel 8255 interfaces,some components and other necessary *** intelligent Mobile Island imple-mented by C language programs can operate under three control *** the sound control Mode 1,the model driver can detect and track a target by Sound Source Localization and then turn and move toward the *** the keypad control Mode 2,it can be controlled by a manual *** the free run Mode 3,Mobile Island can move and turn by *** finding an object in front,it will turn away before moving forward again,so that it can avoid crashing on the obstacle.

关键词：智能机器人声源定位方法超声检测距离

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