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Annual IEEE Symposium on computer-Based Medical systems

作者： C.O. Rolim F.L. Koch M. Assuncao C.B. Westphall Network and Management Laboratory Federal University of Santa Catarina Florianopolis Santa Catarina Brazil Grid Computing and Distributed Systems Laboratory and NICTA Victoria Laboratory Department of Computer Science and Software Engineering University of Melbourne Melbourne VIC Australia

In this article, we describe a grid of sensors to collect patients' vital data and to allow real time monitoring of patients in heath-care centres. We analyse the problem scenario and identify the components involved towards the construction of an integrated and homogeneous management system. Finally, we present a case study to demonstrate the applicability of our approach

关键词： Telemedicine Grid computing Laboratories Real time systems Sensor systems Patient monitoring computerized monitoring Data security Ontologies computer architecture

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Architecture of multi channel multi database voting system

IFIP Advances in Information and Communication Technology

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IFIP Advances in Information and Communication Technology 2005年 189卷 281-295页

作者： Vasudhara Reddy, A. Raghavan, S.V. Network Systems Laboratory Department of Computer Science and Engineering Indian Institute of Technology Madras India

ISBN: (纸本)9780387287539

Voting technology has seen various changes over the time, starting from traditional ballot voting system to the latest e-voting system. But technology couldn't affect the popularity of ballot voting system though it doesn't provide desirable blend of accessibility and efficiency. We believe that an architecture that combines the efficiency of current day technology and the ease of ballot voting system will revolutionize voting. We propose a novel architecture for voting system that uses multiple channels (ATM, Internet, cellular phone, telephone and ballot) and multiple databases to show that it is ideal in achieving accessibility, efficiency, feasibility and flexibility. We show through simulations that the proposed multi channel voting system is suitable for several countries. We compare the cost of this voting system with the traditional one in different scenarios with the help of a new metric.

关键词： Efficiency

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Performance evaluation of mobile IPv6 wireless test-bed in micro-mobility environment with hierarchical design and multicast buffering 1

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1st Asian Internet engineering Conference, AINTEC 2005

作者： Eu, Yong Chu Khatun, Sabira Ali, Borhanuddin Mohd Othman, Mohamed Department of Computer and Communication Systems Engineering Faculty of Engineering University Putra Malaysia Department of Communication Technology and Network Faculty of Computer Science University Putra Malaysia

ISBN: (数字)9783540322924

ISBN: (纸本)3540308849

Mobile 1Pv6 allows mobile devices always addressable by its home address wherever it is located. In this paper the focus is given on a micromobility based test-bed development with improved scheme. The test-bed consists of both hardware and software including four personal computers and one laptop. The laptop is used as Mobile Node (MN), two personal computers are functioned as access points, one personal computer as Home Agent (HA) and the other one is used as Foreign Multicast Router (MR). This test-bed is used to analyze the Mobile 1Pv6 handover delay, packet delay and packet loss in real wireless environment. We measured two scenarios those are Mobile 1Pv6 handover and Enhanced Mobile 1Pv6 with multicast function and hierarchical design. Finally, it is concluded that the proposed handover scheme reduces the handover delay from 4.4s to 0.2s, packet delay from 0.7s to 0.109s and from 44 packet loss to zero packet loss during handover. This gives advantages of zero packet loss and lower handover delay which can significantly improve micro mobility performance 3rd and 4th Generation mobile telephone technology and for beyond. © Springer-Verlag Berlin Heidelberg 2005.

关键词： Hierarchical systems

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Self-stabilizing deterministic TDMA for sensor networks

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2nd International Conference on Distributed Computing and Internet Technology, ICDCIT 2005

作者： Arumugam, Mahesh Kulkarni, Sandeep S. Software Engineering and Network Systems Laboratory Department of Computer Science and Engineering Michigan State University East Lansing MI 48824

ISBN: (纸本)3540309993

An algorithm for time division multiple access (TDMA) is found to be applicable in converting existing distributed algorithms into a model that is consistent with sensor networks. Such a TDMA service needs to be self-stabilizing so that in the event of corruption of assigned slots and clock drift, it recovers to states from where TDMA slots are consistent. Previous self-stabilizing solutions for TDMA are either randomized or assume that the topology is known upfront and cannot change. Thus, the question of feasibility of self-stabilizing deterministic TDMA algorithm where topology is unknown remains open. In this paper, we present a self-stabilizing, deterministic algorithm for TDMA in networks where a sensor is aware of only its neighbors. This is the first such algorithm that achieves these properties. Moreover, this is the first algorithm that demonstrates the feasibility of stabilization-preserving, deterministic transformation of a shared memory distributed program on an arbitrary topology into a program that is consistent with the sensor network model. © Springer-Verlag Berlin Heidelberg 2005.

关键词： computer networks

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Hardware cryptography for ubiquitous computing

Hardware cryptography for ubiquitous computing

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ISCIT 2005 - International Symposium on Communications and Information Technologies 2005

作者： Fukase, Masa-Aki Akaoka, Ryo Lei, Liu Shu, Cheng Tong Sato, Tomoaki Department of Electronic and Information Systems Engineering Hirosaki University Hirosaki Japan Computer and Network Systems Center Hirosaki University Hirosaki Japan

ISBN: (纸本)0780395387

Progressive ubiquitous networks have impressed us with alternative features, diversity or security. When the diversity from small devices to large machines is in normal states, ubiquitous networks are functional and useful. But, it is hard to control if abnormal states once happen. Since the diversity brings about open-access to ubiquitous networks anytime anywhere, this really threatens user security. The key to protect huge amount of multimedia data in ubiquitous networks is to introduce safety aware high-performed single VLSI processor systems embedded with cipher process. TPM (Trusted Platform Module) is a cutting-edge technique developed for the front-end security of a ubiquitous device. Since this works for a short, password-size text data, it does not always promise the complete safety of multimedia data stored in the ubiquitous device. In order to solve this fatal issue, we have developed a mobile processor dedicated to multimedia cryptography. This paper focuses on the multimedia cryptography by the dedicated processor. © 2005 IEEE.

关键词： Cryptography

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Enabling safe dynamic component-based software adaptation

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Lecture Notes in computer Science

作者： Zhang, Ji Cheng, Betty H.C. Yang, Zhenxiao McKinley, Philip K. Software Engineering and Network Systems Laboratory Department of Computer Science and Engineering Michigan State University East Lansing MI 48824 United States

ISBN: (纸本)3540289682

Recomposable software enables a system to change its structure and behavior during execution, in response to a dynamic execution environment. This paper proposes an approach to ensure that such adaptations are safe with respect to system consistency. The proposed method takes into consideration dependency analysis for target components, specifically determining viable sequences of adaptive actions and those states in which an adaptive action may be applied safely. We demonstrate that the technique ensures safe adaptation (insertion, removal, and replacement of components) in response to changing external conditions in a wireless multicast video application. © 2005 Springer-Verlag.

关键词： Artificial intelligence

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An approach to implementing dynamic adaptation in C++

An approach to implementing dynamic adaptation in C++

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2005 Workshop on Design and Evolution of Autonomic Application Software, DEAS 2005

作者： Fleming, Scott D. Cheng, Betty H. C. Kurt Stirewalt, R.E. McKinley, Philip K. Software Engineering and Network Systems Laboratory Department of Computer Science and Engineering Michigan State University East LansingMI48824 United States

ISBN: (纸本)1595930396

This paper describes TRAP/C++, a software tool that enables new adaptable behavior to be added to existing C++ programs in a transparent fashion. In previous investigations, we used an aspectoriented approach to manually define aspects for adaptation infrastructure, which were woven into the original application code at compile time. In follow-on work, we developed TRAP, a transparent shaping technique for automatically generating adaptation aspects, where TRAP/J is a specific instantiation of TRAP. This paper presents our work into building TRAP/C++, which was intended to be a port of TRAP/J into C++. Designing TRAP/C++ required us to overcome two major hurdles: lack of reflection in C++ and the incompatibility between the management of objects in C++ and the aspect weaving technique used in TRAP/J. We used generative programming methods to produce two tools, TrapGen and TrapCC, that work together to produce the desired TRAP/C++ functionality. Details of the TRAP/C++ architecture and operation are presented, which we illustrate with a description of a case study that adds dynamic auditing capabilities to an existing distributed C++ application. Copyright 2005 ACM.

关键词： Middleware

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Real-time specification patterns 05

Real-time specification patterns

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27th International Conference on Software engineering, ICSE 2005

作者： Konrad, Sascha Cheng, Betty H. C. Software Engineering and Network Systems Laboratory Department of Computer Science and Engineering Michigan State University East Lansing MI 48824 United States

ISBN: (纸本)9781581139631

Embedded systems are pervasive and frequently used for critical systems with time-dependent functionality. Dwyer et al. have developed qualitative specification patterns to facilitate the specification of critical properties, such as those that must be satisfied by embedded systems. Thus far, no analogous repository has been compiled for real-time specification patterns. This paper makes two main contributions: First, based on an analysis of timing-based requirements of several industrial embedded system applications, we created real-time specification patterns in terms of three commonly used real-time temporal logics. Second, as a means to further facilitate the understanding of the meaning of a specification, we offer a structured English grammar that includes support for real-time properties. We illustrate the use of the real-time specification patterns in the context of property specifications of a real-world automotive embedded system. Copyright 2005 ACM.

关键词： Real time systems

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On the resolution of local ambiguity in visual recognition: Modeling by tree-structured Markov random fields

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systems and computers in Japan 2005年第14期36卷 21-31页

作者： Date, Akira National Institute of Information and Communications Technology Kyoto 619-0289 Japan Department of Computer Science and Systems Engineering University of Miyazaki Japan Neuroscience Society Japanese Neural Network Society Society for Neuroscience

To understand a role of feedback signals in the visual cortex, we have developed a computational model which performs image interpretation in degraded environments;given a degraded picture, we seek the image that maximizes the posterior distribution where maximization is performed via dynamic programming. This is a powerful theoretical framework provided by Geman and Manbeck (1993). We have developed a simplified version of theirs. The capability of the model to perform image interpretation has been investigated. We demonstrate that damages of feedback signals affect noise removal and boundary-Finding, indicating a role of the feedback signals. © 2005 Wiley Periodicals, Inc.

关键词： Object recognition

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Low energy digital electronics for multimedia ubiquitous environments

Low energy digital electronics for multimedia ubiquitous env...

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9th World Multi-Conference on Systemics, Cybernetics and Informatics, WMSCI 2005

作者： Fukase, Masa-Aki Sato, Tomoaki Department of Electronic and Information Systems Engineering Hirosaki University Hirosaki 036-8561 Japan Computer and Network Systems Center Hirosaki University Hirosaki 036-8561 Japan

ISBN: (纸本)9806560612

Internet owes its outstanding expansion in recent years to the development of handheld multimedia devices. The performable features and security of these devices have mainly relied on software supports. However, this obviously contradicts power conscious design. The hardware system of a single VLSI processor is indispensable to fulfill demands for the power conscious high speed cryptography of large quantity of multimedia data. Setting up the drastic throughput of 1GIPS (109 instructions/sec) and 1-W power dissipation, we have exploited the architecture of a hardware security-embedded multimedia mobile processor named HSgorilla by sophisticatedly unifying up-to-date processor techniques. This paper focuses on HSgorilla's aspects, application, and design approach for one of processor cores, HSgorilla035, by using 0.35-μm CMOS standard cell technology. Current specifications so far achieved fill our expectations to some extent, yet they are not always sufficient for the target specifications. Actually, further enhancement of throughput is required. We will be able to afford to do this, considering the power consumption is still less than 1W.

关键词： Cryptography

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