Browsing by Issue Date, starting with "2007-12-25"

Now showing 1 - 20 of 58414

A new solution for a partially penetrating constant-rate pumping well with a finite-thickness skin
(2007-12-25)
Chiu, Pin-Yuan
;
Yeh, Hund-Der
;
Yang, Shaw-Yang
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環境工程研究所
;
Institute of Environmental Engineering
A mathematical model describing the constant pumping is developed for a partially penetrating well in a heterogeneous aquifer system. The Laplace-domain solution for the model is derived by applying the Laplace transforms with respect to time and the finite Fourier cosine transforms with respect to vertical co-ordinates. This solution is used to produce the curves of dimensionless drawdawn versus dimensionless time to investigate the influences of the patch zone and well partial penetration on the drawdown distributions. The results show that the dimensionless drawdown depends on the hydraulic properties of the patch and formation zones. The effect of a partially penetrating well on the drawdown with a negative patch zone is larger than that with a positive patch zone. For a single-zone aquifer case, neglecting the effect of a well radius will give significant error in estimating dimensionless drawdown, especially when dimensionless distance is small. The dimensionless drawdown curves for cases with and without considering the well radius approach the Hantush equation (Advances in Hydroscience. Academic Press: New York, 1964) at large time and/or large distance away from a test well. Copyright (C) 2007 John Wiley & Sons, Ltd.
第十三期總編輯的話
(2007-12-30)
江柏廷
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Department of Communication and Technology
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傳播與科技學系
第十三期總編輯的話
沒落的花煙巷弄-歸綏街
(2007-12-30)
謝佳慧
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Department of Communication and Technology
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傳播與科技學系
沒落的花煙巷弄-歸綏街
《被出賣的台灣》
(2007-12-30)
沈昭邦
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Department of Communication and Technology
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傳播與科技學系
上周二（十二月二十五日）適逢聖誕佳節，在眾人享受聖誕晚餐的同時，在交大的另一角落正舉辦著一場演講，主講者正是最近新聞、風波不斷的新聞局局長－謝志偉。在這場主題為《從我留學經驗看台灣》的演講，筆者有幸的從謝志偉手中取得一本他極為推薦的書：《被出賣的台灣》（Formosa Betrayed）。
交大宅男宿舍介紹
(2007-12-30)
汪承漢
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Department of Communication and Technology
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傳播與科技學系
交大宅男宿舍介紹
《手紙》：罪與罰
(2007-12-30)
林憶宏
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Department of Communication and Technology
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傳播與科技學系
電影《手紙》觀後感
「m-flo」混音再現，感動依舊
(2007-12-30)
林暐家
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Department of Communication and Technology
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傳播與科技學系
"Loves"熱愛系列最高傑作「COSMICOLOR 宇宙色彩」的完全混音版專輯
星光現象選秀節目一窩蜂
(2007-12-30)
陳惠玟
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Department of Communication and Technology
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傳播與科技學系
探討現在台灣現有的文化現象
選舉面面觀
(2007-12-30)
陳貞儒
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Department of Communication and Technology
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傳播與科技學系
立委選舉選期逼近，候選人如何利用各種方式想抓住選民注意呢?
被壓垮的草莓
(2007-12-30)
賴奕如
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Department of Communication and Technology
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傳播與科技學系
社會不斷出現自殺事件，難道草莓族真的背負了過多的壓力嗎？生命對於他們來說已經不再重要？
我樂故我在阿雞的音樂聯合國
(2007-12-30)
蔡昇峰
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Department of Communication and Technology
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傳播與科技學系
一聽到「拷秋勤」這樣的樂團名稱，也許會覺得不知所云，不知道是什麼意思，甚至有的人會聯想到台語的「打手槍」這類粗鄙的用詞。但其實拷秋勤是有相當深刻、典雅意涵的。拷秋勤是指農業作息「春耕、夏耘、秋勤、冬藏」中的「秋勤」，意指農家辛勤收割稻米，「拷」字則代表農夫手持鐮刀收割的動作。
週末好去處
(2007-12-30)
張雅雯
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Department of Communication and Technology
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傳播與科技學系
照片故事
MCHotdog─放蕩不羈的音樂狂想
(2007-12-30)
陳濡群
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Department of Communication and Technology
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傳播與科技學系
台灣饒舌一哥聽看看他的音樂對台灣社會帶來甚麼衝擊
《不願面對的真相》不知道還是不願面對？
(2007-12-30)
姜建亨
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Department of Communication and Technology
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傳播與科技學系
氣候變遷一直都是科學家所關注的問題但是卻一直被大眾所忽視這樣到底是大家不知道的真相還是大家不願面對的真相??
戲劇般的人生－李忠義
(2007-12-30)
姚翔
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Department of Communication and Technology
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傳播與科技學系
窮小孩白手起家，一生大起大落的個人故事。
Edge-bipancyclicity of conditional faulty hypercubes
(2007-12-31)
Shih, Lun-Min
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Tan, Jimmy J. M.
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Hsu, Lih-Hsing
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資訊工程學系
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Department of Computer Science
Xu et al. showed that for any set of faulty edges F of an n-dimensional hypercube Q(n) with vertical bar F vertical bar <= n - 1, each edge of Q(n) - F lies on a cycle of every even length from 6 to 2(n), n >= 4, provided not all edges in F are incident with the same vertex. In this paper, we find that under similar condition, the number of faulty edges can be much greater and the same result still holds. More precisely, we show that, for up to vertical bar F vertical bar = 2n - 5 faulty edges, each edge of the faulty hypercube Q(n) - F lies on a cycle of every even length from 6 to 2(n) with each vertex having at least two healthy edges adjacent to it, for n >= 3. Moreover, this result is optimal in the sense that there is a set F of 2n - 4 conditional faulty edges in Q(n) such that Q(n) - F contains no hamiltonian cycle. (c) 2007 Elsevier B.V. All rights reserved.
可攜式EEG/EKG/fNIRS腦神經影像系統研發暨其整合型生醫感測處理晶片系統設計---子計畫四：低複雜度生醫運算引擎設計與嵌入式平台建置(I)
(2008)
范倫達
;
Van Lan-Da
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國立交通大學資訊工程學系(所)
本計畫為整合型計畫中的子計畫四-低複雜度生醫運算引擎設計與嵌入式平台建置負責進行整合後端EEG/EKG/fNIRS生醫運算晶片設計與製作和3D醫學影像顯示嵌入式平台的開發。本計畫預計完成低複雜度EEG-ICA晶片架構設計、低複雜度EKG-HRV晶片架構設計、低複雜度可適性影像補插晶片等主要生醫晶片/矽置產、低複雜度3D顯示演算法與晶片，並且結合上述晶片與CIC合作開發的生醫嵌入式平台，達成可攜式與即時EEG/EKG/fNIRS生醫訊號擷取展示的目的。未來三年之執行摘要如下所述：第一年計畫摘要：第一年的計畫預計將整個系統平台中的EEG-ICA晶片架構設計、EKG-HRV晶片架構設計、可適性影像補插晶片等主要晶片以低複雜度的方式來完成，首先訂定生醫訊號運算之EEG-ICA、EKG-HRV的規格，而設計的重點將會以降低整體演算法複雜度以及晶片面積最小化為主，並在Concord平台上以FPGA驗證其功能正確性，另一方面，在後端顯示平台上，將會先開發低複雜度3D演算法，為了降低3D演算法所需的記憶體，會在前端加入可適性影像補插晶片來降低因為解析度變大而造成的記憶體使用量和運算量，也達到初步低複雜度的生醫運算引擎與平台的建置。第二年計畫摘要：第二年的工作預計將第一年的生醫訊號處理EEG、HRV晶片以可重組化的方式來實現，其目的除了將來能做可調式通道數的多功能晶片之外，也可增加系統單晶片(SOC)的整合度，此外，也將低複雜度3D演算法設計實現為晶片，實現成晶片的目的是讓整體生醫嵌入式系統平台的開發更完整，並朝向將Concord平台客製化發展且同時開始著手於各個IP/單元之間的溝通，因為IP/單元之間有效的溝通可以讓整體平台之效能更好，而本年度的持續工作將以完整的生醫運算引擎平台做為目的，並分析結果進行微調，最後，評估系統功能性與穩定性是否符合當初制定的規格。第三年計畫摘要：第三年的工作除了持續進行整體系統進一步的整合工作之外，也各別對可重組化的EEG、HRV處理晶片、可適性影像補插晶片和低複雜度3D醫學影像顯示晶片做功耗最佳化的設計，因為在晶片組整合在一起時，有些記憶體及控制器可以共用來降低整體面積及功耗，並進行完整的IP整合與系統測試及驗證，同時將Concord客製化平台與其他子計畫結合展現總計劃當初訂定的規格。
Dual-Band Upconversion Gilbert Mixer Utilizing an LC Current Mirror
(2008)
Syu, Jin-Siang
;
Meng, Chinchun
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Yen, Ying-Chieh
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Huang, Guo-Wei
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電信工程研究所
串聯式車牌辨識系統
(2008-01-01)
王舜正
;
李錫堅
本發明提供一種串聯式車牌辨識系統,其係藉由車牌字元區域偵測模組接收一影像,並搜尋出影像中每一個近似車牌範圍,接著找出每一個近似車牌範圍中所有具有連續相同像素之序列,並將這些序列經過塗抹、濾除與連接區塊擷取處理後,取得每一個近似車牌範圍的車牌字元區域影像,而在驗證後輸出已確認之車牌字元區域影像,再來將已確認之車牌字元區域影像送入車牌字元切割與辨識模組中,以取得所有獨立字元影像,並在獨立字元影像經過字元驗證辨識後,獲得所有車牌字元資訊。因此,本發明具有高準確率、快速即時運算及具有學習能力之優點。
Energy-constrained MMSE decentralized estimation via partial sensor noise variance knowledge
(2008)
Wu, Jwo-Yuh
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Huang, Qian-Zhi
;
Lee, Ta-Sung
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電信工程研究所
;
Institute of Communications Engineering
This paper studies the energy-constrained MMSE decentralized estimation problem with the best-linear-unbiased-estimator fusion rule, under the assumptions that i) each sensor can only send a quantized version of its raw measurement to the fusion center (FC), and ii) exact knowledge of the sensor noise variance is unknown at the FC but only an associated statistical description is available. The problem setup relies on maximizing the reciprocal of the MSE averaged with respect to the prescribed noise variance distribution. While the considered design metric is shown to be highly nonlinear in the local sensor transmit energy (or bit loads), we leverage several analytic approximation relations to derive a associated tractable lower bound; through maximizing this bound a dosed-form solution is then obtained. Our analytical results reveal that sensors with bad link quality are shut off to conserve energy, whereas the energy allocated to those active nodes is proportional to the individual channel gain. Simulation results are used to illustrate the performance of the proposed scheme.