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computer-aided plant enterprise safety management system (CAPE-SAFE) - Design framework

systems engineering 2002年第2期5卷 109-122页

作者： Gabbar, Hossam A. Chung, P.W.H. Shimada, Yukiyasu Suzuki, Kazuhiko Department of Systems Engineering Okayama University 3-1-1 Tsushima-Naka Okayama 700-8530 Japan Department of Computer Science Loughborough University Leicestershire LE11 3TU United Kingdom Frontier Collaborative Research Center Tokyo Institute of Technology Japan Department of Computer Science Loughborough University Systems Engineering Department Okayama University System Analysis Laboratory Systems Engineering Department Okayama University

Recent researches in the area of safety engineering highlighted the role of automated (computer-aided) tools in managing plant enterprise safety activities. This research has been carried out as collaboration with industry to design a computer-aided plant enterprise safety management system called CAPE-SAFE. The solution has been proposed to fulfill the need for standard and integrated safety management system that covers all aspects of plant enterprise safety. The proposed solution is integrated with other systems and components within plant enterprise engineering environment (PEEE) to enable exchanging and sharing lifecycle information and knowledge. The information system structure of the proposed solution has been presented as well as the design framework of the system components and modules. Hydrodesulfurization (HDS) continuous plant is used as a case study to illustrate the mechanism of CAPE-SAFE and to describe the interaction with other components within PEEE. The proposed solution will help in reducing the overall operating cost as well as the risk associated with plant operation. © 2002 Wiley Periodicals, Inc.

关键词： systems engineering

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Subterahertz detection by high electron mobility transistors at large forward gate bias

Subterahertz detection by high electron mobility transistors...

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IEEE Conference on High Performance Devices

作者： Y. Deng W. Knap S. Rurayantsev R. Gaska A. Khan V. Ryzhii E. Kaminska A. Piotrowska J. Lusakowski M.S. Shur Electrical Computer and System Engineering Department Rensselaer Polytechnic Institute Troy New York USA GES CNRS-Universite Montpellier2 Montpellier France Rensselaer Polytechnic Institute Troy NY US Electr. Comput. & Syst. Eng. Dept. Rensselaer Polytech. Inst. Troy NY USA Sensor Electronic Technology Inc. Latham NY USA Department of Electrical and Computer Engineering University of South Carolina Columbia SC USA Computer Solid State Physics Laboratory University of Aizu Aizu-Wakamatsu Japan Institute of Electron Technology Warsaw Poland

The electron delay time associated with the electron propagation across the FET gate barrier layer under high positive gate bias is expected to induce a dynamic negative differential conductance and enhance the growth of plasma waves in the channel. This dynamic negative conductance is related to the phase shift between the current and voltage waveforms caused by the electron time delay during the electron tunneling through the gate barrier. We present experimental investigations of the plasma wave detector responsivity at 200 GHz and 600 GHz radiation for long channel AlGaAs/GaAs and AlGaInN/GaN based HEMTs at 8 K and 300 K. The appearance of detector response correlated with an increase of the injected gate current under the forward gate bias is reported for both types of the investigated devices. Our results confirm that a large gate current can enhance the excitation of plasma waves.

关键词： HEMTs MODFETs Electrons Plasma waves Delay effects Radiation detectors Propagation delay FETs Voltage Tunneling

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Dynamic process management in KSIX cluster middleware

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8th European on Parallel Virtual Machine and Message Passing Interface Users’ Group Meeting, 2001

作者： Angskun, Thara Uthayopas, Putchong Rungsawang, Arnon Parallel Research Group Computer and Network System Research Laboratory Department of Computer Engineering Kasetsart University Bangkok10900 Thailand

ISBN: (纸本)3540426094

Dynamic process management is a much-needed feature for applications and tools development in Beowulf cluster environment. A welldefined and efficient dynamic process management in cluster middleware layer can simplify the programming task of parallel tool developers. This paper presents the design and implementation of dynamic process management in a cluster middleware called KSIX. KSIX provides a rich set of system call that handles rapid process creation, termination, and remote signal delivery. Moreover, KSIX also handles the correct redirection of standard input, standard output and standard error of process or group of processes. The experiment has been conducted and the results are presented to illustrate the performance of our implementation. © Springer-Verlag Berlin Heidelberg 2001.

关键词： Middleware

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Conditional techniques for low power consumption flip-flops

Conditional techniques for low power consumption flip-flops

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作者： Nedovic, Nikola Aleksic, Marko Oklobdzija, Vojin G. Department of Electrical and Computer Engineering Advanced Computer System Design Laboratory University of California Davis CA 95616 United States

ISBN: (纸本)0780370570

Conditional capture and conditional precharge techniques for high-performance flip-flops are reviewed in terms of power and delay. It is found that application of conditional techniques can improve Energy-Delay Product for up to 14% for 50% input activity and save more than 50% in power consumption for quiet input. This property makes conditional methods suitable for high-performance VLSI systems. © 2001 IEEE.

关键词： Flip flop circuits

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Design and implementation of CMOS LVDS 2.5 Gb/s transmitter and 1.3 Gb/s receiver for optical interconnections

Design and implementation of CMOS LVDS 2.5 Gb/s transmitter ...

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2001 IEEE International Symposium on Circuits and systems, ISCAS 2001

作者： Lee, Jaeseo Lim, Jae-Won Song, Sung-Jun Song, Sung-Sik Lee, Wang-Joo Yoo, Hoi-Jun Semiconductor System Laboratory Department of Electrical Engineering and Computer Science Korea Advanced Institute of Science and Technology Kusong-dong Yusong-gu Taejon Korea Republic of

ISBN: (纸本)0780366859

Design and implementation of a 2.5 Gb/s CMOS transmitter and a 1.3 Gb/s receiver for optical interconnections are presented. The transmitter accepts LVDS signals and converts it into optical signals. The receiver receives the optical signals and recovers it to LVDS signals. They are designed and implemented in standard 0.25 um CMOS process using 1-poly and 5-metal layers. The 850 nm VCSEL is assumed as a light source. Maximum transmit data rate of 2.5 Gb/s and receive data rate of 1.3 Gb/s are obtained over a wide range of common mode operation. At supply voltage of 2.5 V, the transmitter and receiver consume less then 50 nW and 51 nW of power, respectively. © 2001 IEEE.

关键词： Optical interconnects

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An adaptive optimal multimedia network transmission control scheme 2nd

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2nd IEEE Pacific-Rim Conference on Multimedia, IEEE-PCM 2001

作者： Shyu, Mei-Ling Chen, Shu-Ching Luo, Hongli Department of Electrical and Computer Engineering University of Miami Coral GablesFL33124 United States Distributed Multimedia System Laboratory Florida International University School of Computer Science MiamiFL33199 United States

ISBN: (纸本)3540426809

In this paper, we present a sender-driven adaptive optimal multimedia network transmission control scheme, which takes into account the buffer occupancy and network delay to maximize the utilization of network resources. For this purpose, adaptive network resource optimization with quadratic costs is used in the proposed scheme to provide the minimal allocation of the bandwidth and achieve the maximal utilization of the client buffer. Simulation results show that the transmission rate can be dynamically adjusted at the server according to the changing network delays and buffer packet sizes at the client to avoid the loss of packets, and at the same time to achieve the minimal bandwidth allocation at maximal utilization of the client buffer. © Springer-Verlag Berlin Heidelberg 2001.

关键词： Bandwidth

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Optimal resource utilization in multimedia transmission

Optimal resource utilization in multimedia transmission

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2001 IEEE International Conference on Multimedia and Expo, ICME 2001

作者： Shyu, Mei-Ling Chen, Shu-Ching Luo, Hongli Department of Electrical and Computer Engineering University of Miami Coral GablesFL33124 United States Distributed Multimedia Information System Laboratory School of Computer Science Florida International University MiamiFL33199 United States

ISBN: (纸本)0769511988

Efficient utilization of network resources is essential in the provision of quality multimedia services. Different approaches have been proposed to shape the multimedia streams as a transmission schedule with smoothed traffic burst. In this paper, we concentrate on the problem of efficient use of bandwidth and client buffer. For this purpose, an optimal transmission schedule is proposed to provide the minimal allocation of the bandwidth and maximal utilization of the client buffer. Simulation results show that the shaping results obtained can dynamically adjust the transmission rate according to the buffer packet sizes and playback rates at the client to avoid the loss of packets, and at the same time achieve the minimal bandwidth allocation and maximal utilization of the client buffer.

关键词： Bandwidth

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Supporting Information Reuse for Video Data Indexing by Using Color Information 3

Supporting Information Reuse for Video Data Indexing by Usin...

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3rd International Conference on Information Reuse and Integration, IRI 2001

作者： Zhang, Chengcui Luo, Lin Chen, Shu-Ching Shyu, Mei-Ling Distributed Multimedia Information System Laboratory School of Computer Science Florida International University MiamiFL33199 United States Department of Electrical and Computer Engineering University of Miami Coral GablesFL33124 United States

ISBN: (纸本)9781618398390

In this paper, an object tracking framework assisted by image segmentation and color indexing techniques to support information reuse for video data is proposed. In order to obtain more accurate results of object tracking, a color indexing method called Color Label Criteria (CLC) is adopted to relax some of the restrictions and assumptions in object tracking in our previous work with low additional cost. Our experiment results on a real video sequence show that the CLC color indexing method is very helpful to achieve more robust object tracking. © (2001) by the International Society for computers and Their Applications All rights reserved.

关键词： Image segmentation

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Video scene change detection method using unsupervised segmentation and object tracking

Video scene change detection method using unsupervised segme...

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2001 IEEE International Conference on Multimedia and Expo, ICME 2001

作者： Chen, Shu-Ching Shyu, Mei-Ling Zhang, Cheng-Cui Kashyap, R.L. Distributed Multimedia Information System Laboratory School of Computer Science Florida International University MiamiFL33199 United States Department of Electrical and Computer Engineering University of Miami Coral GablesFL33124 United States School of Electrical and Computer Engineering Purdue University West LafayetteIN47907 United States

ISBN: (纸本)0769511988

In order to manage the growing amount of video information efficiently, a video scene change detection method is necessary. Many advanced video applications such as video on demand (VOD) and digital library also require the scene change detection to organize the video content. In this paper, we present an effective scene change detection method using an unsupervised segmentation algorithm and the technique of object tracking based on the results of the segmentation. Our results have shown that this method can perform not only accurate scene change detection, but also obtain object level information of the video frames, which is very useful for video content indexing and analysis.

关键词： Image segmentation

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Supporting medical decisions with vector decision trees

Supporting medical decisions with vector decision trees

引用

10th World Congress on Medical Informatics, MEDINFO 2001

作者： Šprogar, Matej Kokol, Peter Zorman, Milan Podgorelec, Vili Yamamoto, Ryuichi Masuda, Gou Sakamoto, Norihiro Laboratory for System Design Faculty of Electrical Engineering and Computer Science University of Maribor Smetanova 17 SI-2000 Maribor Slovenia Osaka Medical College Takatsuki Japan Kyushu University Fukuoka Japan

ISBN: (纸本)1586031945

The article presents the extension of a common decision tree concept to a multidimensional - vector - decision tree constructed with the help of evolutionary techniques. In contrary to the common decision tree the vector decision tree can make more than just one suggestion per input sample. It has the functionality of many separate decision trees acting on a same set of training data and answering different questions. Vector decision tree is therefore simple in its form, is easy to use and analyse and can express some relationships between decisions not visible before. To explore and test the possibilities of this concept we developed a software tool - DecRain - for building vector decision trees using the ideas of evolutionary computing. Generated vector decision trees showed good results in comparison to classical decision trees. The concept of vector decision trees can be safely and effectively used in any decision making process. © 2001 IMIA. All right reserved.

关键词： Machine learning

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