Browsing by Issue Date, starting with "2008-03-27"

Now showing 1 - 20 of 55900

Image-based fuzzy control system
(2008-03-27)
Chen, G. -M.
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Lin, P. -Z.
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Wang, W. -Y.
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Lee, T. -T.
;
Wang, C. -H.
A novel image-based fuzzy control (IBFC) scheme is developed to imitate the way humans use visual information to control objects. A CCD camera gathers images of the controlled plant, and a simple algorithm analyses the images. The proposed image analysis algorithm utilises image information more intuitively than visual servo control systems. The difference between a reference image and the current image is numerically expressed and directly used by a fuzzy control system using a human-like control law. To investigate the effectiveness of the proposed IBFC scheme, it is applied to control an inverted pendulum system. Simulation results show that the IBFC system can achieve favourable tracking performance without prior knowledge of the controlled plant.
Theoretical investigation of molecular properties of the first excited state of the phenoxyl radical
(2008-03-27)
Cheng, Chi-Wen
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Lee, Yuan-Pern
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Witek, Henryk A.
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應用化學系
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應用化學系分子科學碩博班
A theoretical study of molecular, electronic, and vibrational properties of the first excited state of the phenoxyl radical, A B-2(2), is presented. The calculated molecular geometries, vertical and adiabatic excitation energies, and harmonic vibrational frequencies are compared with analogous results obtained for the ground state. The calculated excitation energies correspond well to experimental data. The harmonic vibrational frequencies of the A B-2(2) and the ground state are similar except for modes involving the vibrations of the CO bond.
Two-tier call admission control algorithm in IEEE 802.11 WLAN
(2008-03-27)
Huang, Ching Yao
;
Shih, Yuan Hwai
The present invention discloses a two-tier call admission control algorithm in IEEE 802.11 WLAN. The two-tier call admission control algorithm is given to improve the overall system throughput and guarantee the quality of service of every single user in the WLAN.
A novel technique for measuring pico-scale flow rate of a liquid solution using a microchannel
(2008-03-28)
Chang, Kow-Ming
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Chao, Kuo-Yi
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Lin, Kun-Feng
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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
As micrototal analysis system (mu-TAS) becoming more extensively used, techniques for fabricating microchannels, microactuators, and measuring systems are becoming increasingly important. This study describes a novel method for fabricating a closed microchannel that can be used to measure the pico-scale flow rate of a liquid solution with an accuracy of better than 1 pL/s. The flow rate of 9 pL/s is calculated from the measurements. Without any high temperature or high-voltage processing, the microchannel can be integrated in the complementary metal-oxide-semiconductor (CMOS) microfluidic system and the fabricating process involves only some standard CMOS processes and common materials. The batch fabrication of a single integrated circuit (IC) chip is essential to reaching the goal of a system in one chip. (C) 2007 Elsevier B.V. All rights reserved.
《我要成為空服員》
(2008-03-30)
姚翔
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Department of Communication and Technology
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傳播與科技學系
一本有關空服員面試的聖經
人際關係　不簡單的課題
(2008-03-30)
吳念慈
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Department of Communication and Technology
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傳播與科技學系
獨善其身那套觀念，在現今社會中已經不再適用；在凡事都講求合作的團體生活中，人際關係這門學分就顯得相當重要了。無論在學校、出社會、甚至在軍中，朋友間、室友間、或是情侶之間。
從新好男孩看男孩團體興衰
(2008-03-30)
鍾瑄
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Department of Communication and Technology
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傳播與科技學系
從BSB談男孩團體興衰史
小攤販大愛心
(2008-03-30)
張雅雯
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Department of Communication and Technology
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傳播與科技學系
清大宵夜街的小攤販大愛心
《發條橘子》邪惡伸展的極致
(2008-03-30)
謝甄芳
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Department of Communication and Technology
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傳播與科技學系
發條橘子
《黑金企業》刻劃貪婪人性
(2008-03-30)
郭品君
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Department of Communication and Technology
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傳播與科技學系
開採石油發跡過程、人性的探討
馬耀‧比吼─用影像透露原住民心聲
(2008-03-30)
李怡萱
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Department of Communication and Technology
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傳播與科技學系
原住民導演馬耀‧比吼專訪
《看不見的西藏》變了色的藏文化
(2008-03-30)
陳貞儒
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Department of Communication and Technology
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傳播與科技學系
日前，西藏紀念抗暴49周年的示威遊行，卻演變成暴力衝突，並遭中國政府血腥鎮壓。著名西藏女作家唯色，在事件發生後，即遭中國政府軟禁。對照她在《看不見的西藏》書中所寫：「曾經，眾神守護著我們的家園，像喇嘛守護著我們的家園，像獒犬守護著帳房，但今天，眾神已遠去…」情境竟是如此相似。
鐵爪下的三鶯部落
(2008-03-30)
賴奕如
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Department of Communication and Technology
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傳播與科技學系
河岸旁的部落，被政府視為是破壞市容、有礙觀瞻。拆掉了他們的家，他們又該去哪？
荒誕破碎《一刀未剪的童年》
(2008-03-30)
薛怡凡
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Department of Communication and Technology
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傳播與科技學系
作者Augusten Burroughs的童年回憶錄。整本書以青少年的角度揭露出現實的社會百態，且以幽默的手法道出作者瘋狂且黑暗的童年世界。
集結自由廣場台灣藏人同胞聲援西藏
(2008-03-30)
蘇芳儀
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Department of Communication and Technology
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傳播與科技學系
西藏青年對西藏文化的看法及期許，以及他們參與絕食抗議的現場情形。
《垂死的肉身》
(2008-03-30)
黃夙蓮
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Department of Communication and Technology
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傳播與科技學系
書評 - 垂死的肉身
總編輯的話
(2008-03-30)
林暐家
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Department of Communication and Technology
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傳播與科技學系
123
Phase transformation and optical characteristics of porous germanium thin film
(2008-03-31)
Ko, T. S.
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Shieh, J.
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Yang, M. C.
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Lu, T. C.
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Kuo, H. C.
In this study, we proposed a method to prepare GeO2 by treating porous Ge thin film with thermal annealing in O-2 ambient. After annealing, the morphological transformation from porous thin film to an island structure was observed. The crystallization and composition of the porous Ge thin film prepared using different annealing time in O-2, ambient were confirmed by X-ray diffraction, X-ray photoelectron spectroscopy and Raman spectra. Initial Ge composition was gradually oxidized to GeO2 with increasing annealing time. Comparing the photoluminescence (PL) results between Ge and GeO2, it was found that the visible photoluminescence originated from the germanium oxide. Photoluminescence measurements obtained at different temperatures exhibited a maximum integrated PL intensity at around 200 K. A possible explanation for this behavior might be the competition between radiative recombination and nonradiative hopping process. (C) 2007 Elsevier B.V. All rights reserved.
Chirp and error rate analyses of an optical-injection gain-switching VCSEL based all-optical NRZ-to-PRZ converter
(2008-03-31)
Lin, Chia-Chi
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Kuo, Hao-Chung
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Peng, Peng-Chun
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Lin, Gong-Ru
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交大名義發表
Optically injection-locked single-wavelength gain-switching VCSEL based all-optical converter is demonstrated to generate RZ data at 2.5 Gbit/s with bit-error-rate of 10(-9) under receiving power of -29.3 dBm. A modified rate equation model is established to elucidate the optical injection induced gain-switching and NRZ-to-RZ data conversion in the VCSEL. The peak-to-peak frequency chirp of the VCSEL based NRZ-to-RZ is 4.5 GHz associated with a reduced frequency chirp rate of 178 MHz/ps at input optical NRZ power of -21 dBm, which is almost decreasing by a factor of 1/3 comparing with chirp on the SOA based NRZ-to-RZ converter reported previously. The power penalty of the BER measured back-to-back is about 2 dB from 1 Gbit/s to 2.5 Gbit/s. (c) 2008 Optical Society of America.
Reliable tree-type passive optical networks with self-restorable apparatus
(2008-03-31)
Yeh, Chien Hung
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Shih, Fu-Yuan
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Chang, Gee-Kung
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Chi, Sien
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光電工程學系
We propose and investigate a simply self-restored tree-type time-division-multiplexed passive optical network (TDM-PON) with duplex fiber system against the fiber failure. The new proposed optical line terminal (OLT), optical network unit (ONU), and remote node (RN) can be used to prevent and protect the occurrence of fiber failure in the self-protected tree-type PON. The protection and restoration time of the access network can be archived within 7 ms in this experiment. In addition, the performances of data traffic for the fiber access network are also analyzed and discussed. (C) 2007 Optical Society of America.