Browsing by Author "LIN, CH"

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A NOVEL MEMORY ARCHITECTURE FOR VIDEO SIGNAL PROCESSOR
(1993)
HUNG, JS
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LIN, CH
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JEN, CW
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電控工程研究所
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Institute of Electrical and Control Engineering
A RASTER ENGINE FOR COMPUTER GRAPHICS AND IMAGE COMPOSITION
(1994)
CHEN, CL
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LIN, CH
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LEE, HR
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JEN, CW
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電子工程學系及電子研究所
AN EFFICIENT DESCENT ALGORITHM FOR A CLASS OF UNCONSTRAINED OPTIMIZATION PROBLEMS OF NONLINEAR LARGE MESH-INTERCONNECTED SYSTEMS
(1993)
LIN, SY
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LIN, CH
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YU, SL
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電控工程研究所
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Institute of Electrical and Control Engineering
AN EFFICIENT METHOD FOR UNCONSTRAINED OPTIMIZATION PROBLEMS OF NONLINEAR LARGE MESH-INTERCONNECTED SYSTEMS
(1995-03-01)
LIN, SY
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LIN, CH
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交大名義發表
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電控工程研究所
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National Chiao Tung University
We present a new efficient method for solving unconstrained optimization problems for nonlinear large mesh-interconnected systems. This method combines an approximate scaled gradient method with a block Gauss-Seidel with line search method which is used to obtain an approximate solution of the unconstrained quadratic programming subproblem. We prove that our method is globally convergent and demonstrate by several numerical examples its superior efficiency compared to a sparse matrix technique based method. In an example of a system of more than 200 variables, we observe that our method is 3.45 times faster than the sparse matrix technique based Newton-like method and about 50 times faster than the Newton-like method without the sparse matrix technique.
AN IMPLEMENTABLE DISTRIBUTED STATE ESTIMATOR AND DISTRIBUTED BAD DATA-PROCESSING SCHEMES FOR ELECTRIC-POWER SYSTEMS
(1994-08-01)
LIN, SY
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LIN, CH
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交大名義發表
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電控工程研究所
;
National Chiao Tung University
In this paper, we present an implementable distributed state estimator and distributed bad data detection and identification schemes for electric power systems. The system under consideration is partitioned into k areas, each of which is governed by a local control center that has at least one computer system. These decentralized computer systems are linked by a communication network. The distributed state estimator and distributed bad data processing schemes are designed to be carried out in this computer network. The proposed distributed state estimator possesses the following properties, which ensure its implementability: 1) it uses only the computers available in the decentralized local control centers, 2) it is executed in a small-scale computer communication network, 3) it can converge even if errors occasionally occur in the communication links, and 4) the decentralized computers need not be synchronous. Furthermore, our distributed bad data processing schemes can process the bad data in each area independently using the corresponding local computer system.
COMBINING PROJECTED JACOBI METHOD WITH DUAL PROJECTED PSEUDO-QUASI-NEWTON METHOD FOR MULTICOMMODITY NETWORK FLOW PROBLEMS
(1993)
LIN, SY
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LIN, CH
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電控工程研究所
;
Institute of Electrical and Control Engineering
FULL-WAVE AND EXPERIMENTAL INVESTIGATIONS OF RESONANT AND LEAKY PHENOMENA OF MICROSTRIP STEP DISCONTINUITY PROBLEMS WITH AND WITHOUT TOP COVER
(1994)
LO, WT
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TZUANG, CKC
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PENG, ST
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LIN, CH
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傳播研究所
PASSWORD AUTHENTICATION USING NEWTON INTERPOLATING POLYNOMIALS
(1991)
LIN, CH
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CHANG, CC
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WU, TC
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LEE, RCT
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資訊科學與工程研究所
A password authentication mechanism based upon Newton's interpolating polynomial and a strong cryptographic operation such as DES (data encryption standard) is proposed in this paper. The mechanism can respond to any login request very efficiently. It is suitable for real-time applications and can be implemented in microcomputer system. With the properties of Newton's interpolating polynomial, high system performance can be achieved. The basic idea of our method is that users in the system are congregated together. Any illegal modification by an intruder to some user's parameter on the host tables will influence the others and can be easily detected. However, legitimate modification of password could be made efficiently.