Browsing by Issue Date, starting with "2007-11-15"

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Characterizing the Hsincheng active fault in northern Taiwan using airborne LiDAR data: Detailed geomorphic features and their structural implications
(2007-11-15)
Chan, Yu-Chang
;
Chen, Yue-Gau
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Shih, Tian-Yuan
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Huang, Chung
;
土木工程學系
We applied newly acquired high-resolution airborne LiDAR data to study a segment of the Hsincheng fault, a well-known active fault near a large industrial park in northern Taiwan. The Hsincheng fault has received much attention and study in the past; but high spatial resolution digital elevation models have not previously been applied to the study of the fault and its surrounding structures. We processed the acquired LiDAR data and produced I in digital elevation models (DEMs) to investigate the active fault adjacent to the densely populated and important infrastructure in Taiwan. Using the LiDAR DEMs, aerial photographs and topographic maps, we show highly detailed geomorphic characteristics around the study area of the Hsincheng fault. Three major characteristics of the study area are defined that include three very well preserved river terraces at varying levels, the fault/fold scarp of the Hsincheng fault, and meandering river systems. Using the LiDAR DEMs, we were able to detect with precision several fault/fold scarps and very gentle NE-trending folding of the river terraces. In general, the LiDAR DEMs have provided unprecedented clarity of landforms for one segment of the Hsincheng fault, which has helped the characterization of subtle but important geomorphic features. (c) 2007 Elsevier Ltd. All rights reserved.
Growth and characteristics of lead sulfide nanocrystals produced by the porous alumina membrane
(2007-11-15)
Chen, Jung-Hsuan
;
Chao, Chuen-Guang
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Ou, Jong-Chyan
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Liu, Tzeng-Feng
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材料科學與工程學系
Lead sulfide (PbS) nanocrystals were formed by using Pb nanowires reacted with hydrogen sulfide (H2S) gas. The structure and composition of the as-prepared nanocrystals were confirmed by scanning electron microscopy, X-ray diffraction, transmission electron microscope and energy dispersive X-ray spectroscopy. According to the differential scanning calorimeter analysis, the PbS nanocrystals in a cubic structure owned excellent thermal stability. Furthermore, the optical properties including photoluminescence (PL) and Raman scatting spectrum were also measured. The PL emission measurement of the PbS nanocrystal showed that there was an orange-red emission peak located around 655 nm. A significant quantum confinement effect made the energy gap of PbS produce a blue shift from 0.41 eV to 1.9 eV. (C) 2007 Elsevier B.V. All rights reserved.
Anomalous phase behavior and apparent anharmonicity of the pump-probe signal in a two-dimensional harmonic potential system
(2007-11-15)
Taneichi, T.
;
Kobayashi, T.
;
先進超快雷射研究中心
;
Adv Ultrafast Laser Ctr
Discussion on wavelength dependent "anharmonic" effects in a pump-probe signal for a system of wavepacket on one- and two-dimensional harmonic potentials was given. The Fourier power spectrum of the signal, calculated for a model composed of a three-state electronic system coupled to a set of displaced harmonic oscillators, depends on the pulse duration. Condition under which the wavepacket motion in the harmonic potential substantially deviates from that of the classical point mass is derived. The Fourier power spectrum has enhanced components with frequencies of harmonies even in a system composed of ideally harmonic potentials. Utility of the Fourier analysis of the spectrum for clarification of the squeezed molecular vibrational state is discussed. Calculated oscillatory behavior in phase of a pump-probe signal, as a function of probe frequency, was discussed in terms of a two-dimensional effect on a pump-probe signal. (C) 2007 Elsevier B.V. All rights reserved.
Chirped molecular vibration in a stilbene derivative in solution
(2007-11-15)
Colonna, Anne
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Yabushita, Atsushi
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Iwakura, Izumi
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Kobayashi, Takayoshi
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電子物理學系
The wave packet dynamics of 4-methoxy-4 '-nitrostilbene in solution was studied by femtosecond pump-probe spectroscopy. Transient changes in absorbance exhibit oscillations, which reflect vibrational motions on the ground-state potential surface. Modification of this oscillatory feature in three different solvents (benzene, methanol, and acetonitrile) can be explained in term of the strength of hydrogen bonding and the stabilization of charge-transfer state, confirmed by steady-state absorption and fluorescence spectra. (c) 2007 Elsevier B.V. All rights reserved.
串聯電感性及電容性耦合傳輸線濾波器之雙頻帶通濾波器
(2007-11-16)
鍾世忠
;
林克強
;
張鈞富
本發明為串聯電感性及電容性耦合傳輸線濾波器之雙頻帶通濾波器,本發明之雙頻帶通濾波器由低頻二階電感(電容)性帶通濾波器與二階高頻電容(電感)性帶通濾波器串接構成,高頻二階電容性帶通濾波器內傳輸線反接,使其相位與低頻二階電感性帶通濾波器之相位差180度,所以可將兩者串接,又因阻抗串接,使低頻二階電感性帶通濾波器與高頻二階電容性帶通濾波器之通帶區間產生有限傳輸零點,並可有效抑制外來之干擾訊號,而本發明之雙頻帶通濾波器之高頻通帶頻寬可達到1GHz,所以本發明之雙頻帶通濾波器之電路架構可應用於無線區域網路、電信、電機及電子相關領域上。
基於電腦視覺的智慧型夜間車輛即時偵測與辨識系統
(2007-11-16)
吳炳飛
;
陳彥霖
;
陳元馨
;
陳昭榮
本發明係關於一種夜間車輛即時偵測與辨識系統,其包含:光源物件影像切割裝置1,光源物件分類裝置2,車燈物件辨識裝置3,車輛位置判定裝置4以及車輛追蹤裝置5;在各種夜間道路照明狀態下,該系統能有效且正確地標定與辨識來車與前車之車燈,且在當時道路環境狀況下,正確地提供輔助駕駛所需解析車輛前方交通狀況之資訊。
微型揚聲器之參數鑑別及參數最佳化之方法
(2007-11-16)
白明憲
;
陳榮亮
本發明係提供一種微型揚聲器之參數鑑別及參數最佳化之方法,其係針對微型揚聲器所設計,經由機電常數的量測程序,並撰寫GUI軟體介面以求出微型揚聲器的電聲系統參數,並在計算出微型揚聲器之參數値後,以參數設計最佳化之方法,使微型揚聲器可發揮最佳聲學效果及最小諧波失真。
手指指向偵測系統及方法
(2007-11-16)
黃仲陵
;
傅智銘
;
簡敬宇
本發明係提供一種手指指向偵測系統及方法,其係以數台影像擷取裝置擷取使用者之數張手部影像,並以一處理器對擷取之數張手部影像進行影像處理求出數條手指指向線,利用座標轉換程式轉換出手指指向線於指向平面上的投影線,最後計算數條投影線之交點,即為使用者手指指向之目標點。本發明不需使用任何定位手套或標記手套即可偵測出使用者指向一平面上之任意目標點,具有高辨析度及高準確率,且可應用於簡報系統,作為取代雷射筆或滑鼠之人機介面。
泛用行動通訊系統中系統間交遞之容量為主之壓縮模式的控制方法
(2007-11-16)
黃經堯
;
張正達
;
何玠原
第三代手機系統的重要特色之一為系統間交遞,具有可變傳輸間隙及可變位準之壓縮模式,以正規化地支援系統間及頻率間之交遞,為了將系統之使用資源最小化,當須維持邊界單元的交遞品質時,可採用本發明之容量為主之壓縮模式的控制方法,而在容量與通訊品質互相牽制的考量下,本發明之控制方法在基於容量之潛在影響及壓縮模式量測之成效,可適應性地管理壓縮模式之操作,本發明可增加壓縮模式之操作的成效及表現。
一種即時階層式背景重建與前景偵測之方法
(2007-11-16)
陳祝嵩
;
陳昱廷
本發明揭露一種即時階層式背景重建與前景偵測之方法,可於視訊中進行背景重建與前景偵測,其主要特徵係在於整合了以區塊為基礎(Block-Based)之粗階(Coarse-Level)背景模型(Background Modeling)與以像素為基礎(Pixel-Based)之細階(Fine-Level)背景模型方法。首先,本方法將影像劃分成不互相重疊的影像區塊,並針對每一個區塊建立其粗階背景模型,有了此一模型便可進行快速但形狀較粗略的前景物體偵測。在有了粗略前景偵測結果後,再將此結果饋入(Feed)細階背景模型做進一步的判斷分析。其中在粗階背景重建部份係以一個新發展的區塊描述元(Descriptor)來描述區塊內含資訊的特徵,此一描述元稱為差異均値向量(Difference Mean Vector,DMV)。此外,高斯混和(Gaussian Mixture)方法被使用來對差異均値向量特徵進行粗階背景模型的建構。細階部份則可採用現行習知之以像素為基礎的背景重建方法。另外,一前饋架構(Feed-Forward Framework)亦被揭露來整合粗階背景模型與細階背景模型,其將粗階部份所辨認到的資訊饋入至細階部份,以進行粗階前景偵測結果的細緻化與細階背景模型的更新。
分碼多工系統之碼通道分配法
(2007-11-16)
王蒞君
;
張志文
由於頻率選擇性衰減之通道環境中,兩個使用具有父子關係之正交時域展頻碼的碼通道,即使其頻域展頻碼為正交,亦可能因為頻率選擇性衰減而失去正交性以至於在接收端產生多重接取干擾,而本發明即在提出一種用以預測系統之多重接取干擾量之評量標準,稱為多重接取干擾係數,並根據多重接取干擾係數之觀念提出一種分碼多工系統之碼通道分配法,選擇具有最小多重干擾係數之碼通道分配給一使用者,使系統之干擾量降低並維持低阻塞率。
入聯合國？台灣早就是了！
(2007-11-18)
呂伯芬
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Department of Communication and Technology
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傳播與科技學系
什麼藍的、綠的、統派、獨派。入聯的夢想台灣早已實現，琳瑯滿目的大型售屋看板，從捷克布拉格宮、到法國蔚藍海岸應有盡有。不需要再為了入聯合國吵得焦頭爛額，我們早已經是個聯合國不是嗎？
《聽風的歌》思想漫遊村上春樹
(2007-11-18)
江柏廷
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Department of Communication and Technology
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傳播與科技學系
從村上春樹的第一部成名作品《聽風的歌》中的特殊寫作手法，貼近村上春樹！
《芬芳》－綻放香氣的生命撼動
(2007-11-18)
李怡萱
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Department of Communication and Technology
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傳播與科技學系
張曼娟作品，由短文合輯成的小說，文筆清新故事動人，相當值得推薦
《哈利波特》十年之間
(2007-11-18)
汪承漢
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Department of Communication and Technology
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傳播與科技學系
哈利波特為何如此受歡迎?對這個麻瓜世界又帶來了哪些影響?
一探「環校越野機車道」
(2007-11-18)
賴奕如
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Department of Communication and Technology
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傳播與科技學系
從北大門到南大門機車道與機車棚的探險
自在喜樂　市井人生
(2007-11-18)
蘇芳儀
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Department of Communication and Technology
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傳播與科技學系
大城市的繁華璀璨掩蓋了底下真實的生活，旅人總以為自己只記得當下環境的氛圍，但隨著時間過去，景點、城市只是在世界那端遙遠的一個小點，浮誇的名氣不在，浮現在腦海的反而是旅途中人們的一抹微笑、一段對話。市井小民雖然是最默默的一群，但與他們短短的相遇卻也是最真實的感動，讓人難以忘懷他們是辛勤、踏實體驗人生的一群。
地球保衛戰：氣候暖化
(2007-11-18)
陳濡群
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Department of Communication and Technology
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傳播與科技學系
有鑒於全球氣候異常每年嚴重，分析報導。
林默娘紀念公園狗狗的新樂園
(2007-11-18)
鄭瑋津
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Department of Communication and Technology
;
傳播與科技學系
位於台南安平的林默娘紀念公園，倚靠安平港，除了林默娘雕像外，還有一大片綠地，意外成為親子及寵物們的樂園，大狗、小狗奔跑著，飼主互相討教養狗經，大人小孩玩成一團，隔離了城市喧囂，如同一片世外桃源。
米奇鰻為了生活　擁抱市場
(2007-11-18)
盧沛樺
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Department of Communication and Technology
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傳播與科技學系
第一份工作三個月試用期滿即辭職，一心一意想要將自己的插畫事業行銷國際，究竟這是一個不切實際的幻想；或者說有夢最美，希望便會相隨的真實寫照？不妨來細細品味！