Browsing by Issue Date, starting with "2007-09-20"

Now showing 1 - 20 of 59108

Loudspeaker system having sensorless bass compensation
(2007-09-20)
Bai, Ming-Shian
;
Lee, Chih-Chung
;
Lin, Chien-Liang
The present invention compensates bass frequency for a loudspeaker without using any sensor. The strength and stability of the loudspeaker are enhanced and the working frequency is lowered too. Adaptive loudnesses for various spaces are set. And the parameter drift owing to long-term operation is restrained as well.
交大e-News第010期
(2007-09-20)
Secretariat
;
國立交通大學秘書室
Theory of time-resolved sum-frequency generation and its applications to vibrational dynamics of water
(2007-09-20)
Hayashi, Michitoshi
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Shiu, Ying-Jen
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Liang, Kuo Kan
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Lin, Sheng Hsien
;
Shen, Yuan Ron
A molecular theory of time-resolved sum-frequency generation (SFG) has been developed. The theoretical framework is constructed using the coupled-oscillator model in the adiabatic approximation. This theory can treat not only the vibrational spectroscopy but also vibrational dynamics. An application of this theory is also provided for estimation of the time constants of the intermolecular vibrational energy transfer between water molecules. This approach can be used for molecular analysis of the experimental results of Shen at al. on the SFG studies of vibrational dynamics of water.
GATE DIELECTRIC STRUCTURE AND AN ORGANIC THIN FILM TRANSISTOR BASED THEREON
(2007-09-20)
Chen, Fang-Chung
;
Chuang, Chiao-Shun
;
Lin, Yung-Sheng
A gate dielectric structure and an organic thin film transistor based thereon, wherein the gate dielectric structure comprises: an organic-inorganic composite layer and an organic insulation layer, and the gate dielectric structure is applied to an organic thin film transistor. As the organic-inorganic composite layer of the gate dielectric structure has an organic insulation matrix blended with inorganic surface-modified particles, it can achieve a high dielectric constant. Further, as the organic insulation layer can modify the surface of the organic-inorganic composite layer, not only the leakage current is reduced, but also the crystalline structure of the organic semiconductor layer becomes more orderly. Thus, the carrier mobility is raised, the current output of the element is increased, and the performance of the element is also greatly enhanced.
嵌入式網路操控之光流影像定位全方向運動系統
(2007-09-21)
吳立偉
;
鄭榮煌
;
張永融
;
胡竹生
本發明係為一種嵌入式網路操控之光流影像定位全方向運動系統，其係為以一本體上設置複數個運動單元以及至少一嵌入式網路操控系統，且在本體朝向地面的表面上設置有至少一光流感測器(Optical Flow Sensor)，其中，在運動單元中包含一全向輪(Omni-Directional Wheel)及一馬達裝置；本體的運動係藉由運動單元提供動力，以光流感測器偵測運動狀態且產生光流感測資料，而嵌入式網路操控系統透過通訊網路，可與外部的資訊處理運算端傳輸運動資料與光流感測資料，同時，此運動系統更可連接週邊控制裝置，增加整體系統操控的便利性。由於本發明係利用光流影像偵測的定位方法，即使有輪子滑動、週遭環境變化、誤差累積等等干擾計算的因素產生，仍可獲得精準的定位結果。
Experimental realization of one-way quantum computing with two-photon four-qubit cluster states
(2007-09-21)
Chen, Kai
;
Li, Che-Ming
;
Zhang, Qiang
;
Chen, Yu-Ao
;
Goebel, Alexander
We report an experimental realization of one-way quantum computing on a two-photon four-qubit cluster state. This is accomplished by developing a two-photon cluster state source entangled both in polarization and spatial modes. With this special source, we implemented a highly efficient Grover's search algorithm and high-fidelity two-qubit quantum gates. Our experiment demonstrates that such cluster states could serve as an ideal source and a building block for rapid and precise optical quantum computation.
廢水處理設備
(2007-09-21)
黃志彬
;
鄧宗禹
一種廢水處理設備，主要係由一反應槽、多數個正電極板、多數個負電極板、一電源供應器及一收集裝置所構成。反應槽具有一進流口及一出流口。正電極板與負電極板配置於反應槽內，且正電極板與負電極板係交錯排列。電源供應器係與正電極板與負電極板電性連接。收集裝置配置於反應槽之底部。藉由配置此收集裝置於反應槽之底部，使沈積於反應槽底部之膠狀顆粒可被移除。
二階帶通濾波器
(2007-09-21)
鍾世忠
;
張鈞富
一種二階帶通濾波器，其以一接地電容連接一雙埠網路，並藉由該接地電容提供一回授路徑以形成二有限傳輸零點，該二傳輸零點可將二倍諧頻訊號及GSM手機訊號隔離在通帶之外，且對這些干擾訊號有相當大的抑制，並因此達成雜訊濾除而用於無線區域網路應用中的目的。此外，無極小零件值出現在該二階帶通濾波器中，故其頻率響應不會受製程誤差的影響，且其體積亦較習用者為小。
Inelastic interactions of low-energy electrons with biological media
(2007-09-21)
Tung, C. J.
;
Chan, W. T.
;
Chao, T. C.
;
Tu, Y. H.
;
Kwei, C. M.
A study of inelastic interactions of low-energy electrons with biological media is of fundamental importance in the understanding of radiation-induced actions leading to the biological damage. In the present work, electron energy loss properties in liquid water and solid DNA were calculated based on the dielectric response theory for valence band electrons and atomic models for inner-shell electrons. For electron interactions with the valence band, an extended Drude dielectric function was fitted to experimental optical data and then checked by sum rules. The valance band was considered as composed of many subbands with different oscillator strength, binding energy and damping coefficient. The real and imaginary parts of the dielectric function and the energy loss function were all checked. For electron interactions with inner shells, the generalized oscillator strength was calculated using the sum-rule-constrained binary-encounter model and the local-plasma approximation. The differential inverse mean free paths for the valence band and inner shells were calculated using the Born approximation. Exchange effect was estimated using an approach based on the Moller cross-section. Results of the present work were compared with similar calculations by other authors. (C) 2007 Elsevier B.V. All rights reserved.
智慧型引擎音訊診斷系統及其方法
(2007-09-21)
白明憲
;
陳孟君
;
吳建達
一種智慧型引擎音訊診斷系統及其方法，利用一訊號接收裝置接收一引擎聲音訊號，並藉由一特徵擷取裝置自引擎聲音訊號擷取出複數個特徵參數，並利用一智慧型分類裝置將取出之特徵參數進行分類以產生複數個診斷結果，最後將診斷結果顯示於一輸出裝置上。其中特徵參數包括頻域上之特徵、時域上之特徵及統計上之特徵，且配合多種智慧型分類技術能更有效自動診斷引擎故障類別。
牽手，幾輩子的約定
(2007-09-23)
李怡萱
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Department of Communication and Technology
;
傳播與科技學系
這次的照片故事裡面我想用不同對象的牽手(如：情侶、夫妻、兄弟姊妹、照顧者與被照顧者等)，在照片中所表達出來的感覺來串成一個故事，或是在各種奇妙地點的牽手，希望可以表達出牽手不只是幾輩子的緣分，更是幾輩子的約定。
網路共享新經濟，你跟上時代了嗎？
(2007-09-23)
黃夙蓮
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Department of Communication and Technology
;
傳播與科技學系
網路共享行為所創造的經濟效益，不可小覷！
「廉價航空」機票廉價　生命不廉價
(2007-09-23)
姚翔
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Department of Communication and Technology
;
傳播與科技學系
以普吉島空難事件，談廉價航空的安全性
台灣藝文空間好一個MA MA MIA
(2007-09-23)
呂伯芬
;
Department of Communication and Technology
;
傳播與科技學系
風靡全球的新興音樂劇，來台表演雖仍保有精隨，卻總覺得稍嫌欠缺筆者以自身體驗解讀台灣現況環境對於此類精緻文化發展的影響。
殺手　夙興夜寐的犯罪
(2007-09-23)
薛怡凡
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Department of Communication and Technology
;
傳播與科技學系
小說呼應現代社會兩大議題:正義與媒體
颱風天又來了五峰桃山村滿目瘡痍
(2007-09-23)
曾偉旻
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Department of Communication and Technology
;
傳播與科技學系
五年前，艾莉颱風重創新竹縣五峰鄉土場部落，家園滿目瘡痍。此次韋帕颱風，又迫使部落居民須強制撤離，究竟山區部落居民面臨何種環境，以及愛莉風災後如何重新整頓家園凝聚社區意識。
《火線交錯》　丈量人與人之間最遠的距離
(2007-09-23)
盧沛樺
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Department of Communication and Technology
;
傳播與科技學系
人與人之間最大的距離是___？上帝用語言切割人類，只是個開始。
用遊戲創造第二人生　不只是幻想
(2007-09-23)
謝佳慧
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Department of Communication and Technology
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傳播與科技學系
探討線上遊戲「第二人生」在全世界所引起旋風，它帶來何種經濟、社會及價值觀的改變，並探討這股風潮何以至今未能登陸台灣。
《練習曲》　譜出夢想的交響樂
(2007-09-23)
謝甄芳
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Department of Communication and Technology
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傳播與科技學系
夢想並非遙不可及，每個人都有自己的《練習曲》
海外遊學學生度過充實暑期生活
(2007-09-23)
吳念慈
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Department of Communication and Technology
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傳播與科技學系
很多人會選擇利用暑期長假去海外遊學，學習語言、增廣見聞。三位交大不同科系的女同學，不同地方的遊學經驗，不同文化的差異。