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收集所有交通大學研究人員與學生個人或團體所發表之各項學術著作，涵蓋期刊論文、教師專書、學位論文等項。;;Collections of Publications of NCTU Researchers and Students Like Journal Papers and Thesis.

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Low power design for MPEG-2 video decoder
(1996-01-01)
Lin, CH
;
Chen, CM
;
Jen, CW
;
電子工程學系及電子研究所
;
Department of Electronics Engineering and Institute of Electronics
A computationally efficient method for nonlinear multicommodity network flow problems
(1997-07-01)
Lin, SY
;
Lin, CH
;
電控工程研究所
;
Institute of Electrical and Control Engineering
In this paper, we present a new method for solving nonlinear multicommodity network flow problems with convex objective functions. This method combines a well-known projected Jacobi method and a new dual projected pseudo-quasi-Newton (DPPQN) method which solves multicommodity flow quadratic subproblems induced in the projected Jacobi method. The DPPQN method is a dual Newton-type method that differs very much from the conventional Lagrangian Newton method; our method fully exploits the structural advantages of network-type linear equality constraints to obtain a constant sparse approximate Hessian matrix with a decoupling structure and includes a novel finite-iteration successive projection and (truncated) seal algorithm to resolve the difficulty caused by coupling capacity constraints. The DPPQN method also consists of two decomposition effects, the commodity decomposition effect and the are decomposition effect, which resolve the potential numerical difficulties caused by large dimensions. We show the convergence of our method including the convergence of the finite-iteration successive projection and (truncated) seal algorithm. Compared with the Frank-Wolfe with PARTAN algorithm in which a price-directive decomposition method is used to solve linearized multicommodity flow problems, our method is dramatically faster in terms of the CPU time on a Sparc-10 workstation at solving numerous nonlinear multicommodity network flow examples. (C) 1997 John Wiley & Sons, Inc.
Design of a power-spectrum-based ATM connection admission controller for multimedia communications
(1998-02-01)
Chang, CJ
;
Lin, CH
;
Guan, DS
;
Cheng, RG
;
電信工程研究所
This paper proposes a power-spectrum-based connection admission controller design in asynchronous transfer mode (ATM) switches for multimedia communications, The controller contains a power-spectrum-indexed table for managing multimedia call requests, where traffic characteristics of call requests are described by the power spectrum, The power spectrum can be obtained from the claimed traffic parameters of peak rate, mean rate, and peak rate duration; the pow er spectrum has been shown to have a dominant effect on system performance, The results show that the proposed power-spectrum-based connection admission control method achieves higher system utilization and lower call-blocking probability than the equivalent-capacity allocation method.
A study on the radiation hardness of flash cell with horn-shaped floating-gate
(1997-09-01)
Huang, TY
;
Jong, FC
;
Chao, TS
;
Lin, HC
;
Leu, LY
The effects of radiation on the characteristics of split-gate electrical erasable programmable read only memory (EEPROM)/flash cells with recently-proposed horn-shaped floating gates are studied in terms of cell read current; data retention, cycling endurance, program/erase efficiency, threshold voltage and junction leakage. Our results show that the cells appear to survive after 1 Mrad (Si) Co-60 irradiation. Moreover, the after-irradiation cell read current actually increases in the ''erase'' (i.e., low-threshold voltage, high-conducting) state (i.e., improves), albeit the cell read current also increases in the ''program'' (i.e., high-threshold voltage, low-conducting) state (i.e., a degradation). Our results also show that, despite an improvement in the initial read current in the ''erase'' state immediately after radiation, the write/erase cycling endurance of the flash cells is significantly impeded after irradiation, due to a much faster ''window closure'' rate in the ''erase'' state, although the cell read current is found to remain relatively stable in the ''program'' state after cycling.
Low power design for MPEG-2 video decoder
(1996-08-01)
Lin, CH
;
Chen, CM
;
Jen, CW
;
電子工程學系及電子研究所
;
Department of Electronics Engineering and Institute of Electronics
The I/O power consumption in MPEG-2 decoder is significant because of the wide connection with large capacitances to the frame buffer. To reduce the power dissipation on the Memory Bus, the Gray code encoding scheme is proposed to increase the correlation of the image data transferred on the bus. The bit switching probability in the re-coded data will then decrease and in turn the bus power consumption will be reduced. Combined with the proposed bus arbitration and scheduling scheme proposed in this paper, 22% reduction of power dissipation may be achieved.
Thermally driven polysilicon actuators for lateral displacement
(1999-05-01)
Wu, MF
;
Lin, CH
;
Hsu, WS
;
機械工程學系
;
Department of Mechanical Engineering
A novel one-mask; polysilicon actuator driven by thermal expansion is developed, modeled and tested. The structures are heated by electric current due to resistive dissipation. Thermal strain is magnified by two mechanical mechanisms-lever and parallelogram. The device is tested in air and has a lateral 8 mu m-displacement by applying a low voltage (below 3.5 V). The critical current to reach melting point is about 67 mA with the input voltage less than 5 V. The simulation results by analytical and FEM schemes are compared with experimental data. The maximum output forces is measured with a built-in cantilever beam and is calculated to be about 3.3 mu N.
Identification of material constants of composite laminates using measured strains
(2000-10-01)
Kam, TY
;
Lin, CH
;
Wang, WT
;
機械工程學系
;
Department of Mechanical Engineering
A method for nondestructive evaluation of material constants of composite laminates is presented. An error function is established to measure the differences between the theoretically and experimentally predicted strains. The identification of the the material constants is formulated as a constrained minimization problem in which the material constants are determined to make the error function a global minimum. A global minimization method, together with an appropriate bounding technique for constraining the variations of the material constants, are used to solve the above minimization problem. The applications of the proposed method are demonstrated by means of several examples on the material constants identification of laminated composite cylindrical pressure vessels. [S0094-4289(00)02704-3].
Optimal ranging algorithms for medium access control in hybrid fiber coax networks
(2002-10-01)
Lin, FYS
;
Yin, WM
;
Lin, YD
;
Lin, CH
;
資訊工程學系
The ranging algorithm allows active stations to measure their distances to the headend for synchronization purpose in Hybrid Fiber Coax (HFC) networks. A practicable mechanism to resolve contention among numerous stations is to randomly delay the transmission of their control messages. Since shorter contention cycle time increases slot throughput, this study develops three mechanisms, fixed random delay, variable random delay, and optimal random delay, to minimize the contention cycle time. Simulation demonstrates that the optimal random delay effectively minimizes the contention cycle time and approaches the theoretical optimum throughput of 0.18 from pure ALOHA. Furthermore, over-estimation reduces the impact on contention cycle time more than under-estimation through sensitivity analysis, and both phenomenon damage slot throughput. Two estimation schemes, maximum likelihood and average likelihood, are thereby presented to estimate the number of active stations for each contention resolution round. Simulation proofs that the proposed estimation schemes are effective even when the estimated number of active stations in initial contention round is inaccurate.
Evaluation of hot workability of H13 through processing map
(1999)
Wang, SC
;
Chou, CP
;
Lin, CH
;
Chang, CC
;
機械工程學系
O-2-plasma degradation of low-k organic dielectric and its effective solution for damascene trenches
(2000)
Yeh, CF
;
Lee, YC
;
Su, YC
;
Wu, KH
;
Lin, CH
Methylsilsesquioxane, an organic spin-on dielectric, has attracted much attention as a promising low-k inter-Cu-metal dielectric because of its sufficiently low dielectric constant (<2.8) and excellent thermal stability (>500 degreesC). However, we found that MSQ film would be easily degraded during resist ashing in O-2-plasma ambient after the film is etched with the damascene trenches being created. An innovative sidewall capping technology as an effective solution of this ashing-induced degradation has been successfully developed. This new technology has potential to fulfill the highly reliable damascene process toward Cu/MSQ integration.

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