Browsing by Author "CHEN, JJ"

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A GENERAL PERFORMANCE ANALYSIS METHOD FOR UNIFORM MEMORY ARCHITECTURES
(1993)
CHEN, JJ
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WANG, CS
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CHOU, CR
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資訊科學與工程研究所
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Institute of Computer Science and Engineering
The performance of a multiprocessor system greatly depends on the bandwidth of its memory architecture. In this paper, uniform memory architectures with various interconnection networks including crossbar, multiple-buses and generalized shuffle networks are studied. We propose a general method based on the Markov chain model by assuming that the blocked memory requests will be redistributed to the memory modules in the next memory cycle. This assumption results in an analysis with lower complexity where the number of states is linearly proportional to the number of processors. Moreover, it can provide excellent estimation on the system power and memory bandwidth for all three types of interconnection networks as compared with the simulation results in which the blocked memory requests are resubmitted to the same memory module. Comparisons also show that our method is more general and precise than most existing analysis methods. The method is further extended to estimate the performance of multiprocessor system with caches. The approximation results are also shown to be remarkably good.
A TRANSFORM VIDEO CODER SOURCE MODEL AND ITS APPLICATION
(1994)
CHEN, JJ
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HANG, HM
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電子工程學系及電子研究所
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Department of Electronics Engineering and Institute of Electronics
Application of hierarchy multistage multiobjective approach to network design: Case of express road
(1995)
TZENG, GH
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TSAUR, SH
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CHEN, JJ
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運輸與物流管理系註：原交通所+運管所
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Department of Transportation and Logistics Management
MODELING A REAL-TIME MULTITASKING SYSTEM IN A TIMED PQ NET
(1989-03-01)
CHANG, CK
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CHANG, YF
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YANG, L
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CHOU, CR
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CHEN, JJ
THE INFLUENCE OF MODAL CHOICE ON ENERGY-CONSERVATION STRATEGIES IN TRANSPORT - APPLICATION OF A LOGIT MODEL
(1991-10-01)
TZENG, GH
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CHEN, JJ
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LAN, CJ
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運輸與物流管理系註：原交通所+運管所
;
Department of Transportation and Logistics Management
This paper emphasizes the evaluation of energy conservation strategies that are considered to be sensitive to modal choice by employing a disaggregate logit model. Five hundred households in Taipei city were selected and interviewed on weekdays between 26 December 1986 and 15 January 1987 by using a stratified random sampling process. By computing elasticities of the logit model, three kinds of energy conservation strategies - taxi-fares, exclusive bus lanes and gasoline price - were selected for sensitivity analysis. The results show that a passenger's modal choice and energy consumption in transport are not affected greatly by the three selected energy conservation strategies in the short term. Therefore it is recommended that other strategies are used, such as reducing trip generation, shortening trip length, improving fuel efficiency and increasing vehicle occupancy to reduce energy consumption in transport.