Browsing by Issue Date, starting with "2007-12-18"

Now showing 1 - 20 of 58439

Graphene structure in carbon nanocones and nanodiscs
(2007-12-18)
Lin, Cheng-Te
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Lee, Chi-Young
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Chiu, Hsin-Tien
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Chin, Tsung-Shune
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應用化學系
Carbon nanoparticles, like nanocones and nanodiscs, can be obtained by mechanical treatment of carbon nanofilaments. Microstructural studies suggest that in nanocones the conical graphene stacking with progressively increasing apex (cone) angles does not fully agree with current theoretical geometry models, such as a closed cones model and a cone-helix model. The unusual stacking form of nanocones was taken into account in a modified cone-helix model. The formation mechanism of the distinctive microstructure is attributed to the inclined anchoring effect, and the relaxation of internal stresses, which were induced by the confined pyrolysis process, resulting in easier disintegration by sonication the nanofilaments. This is disclosed for the first time in literature regarding the attainment of uniform carbon nanoparticles.
Cascade plate recognition system
(2007-12-20)
Wang, Shen-Zheng
;
Lee, Hsi-Jian
The present invention discloses a cascade plate recognition system, wherein a compact plate region detection module receives an image, detects the plate area candidates of the image, picks out the sequences having continuous identical pixels from the plate area candidates, performs smearing and filtering on the sequences, extracts connected components from the plate area candidates to obtain compact plate regions, verifies the compact plate regions and outputs the verified compact plate regions; a plate character segmentation and recognition module receives the verified compact plate regions, extracts independent-character regions from each verified compact plate regions, verifies the independent-character regions and recognizes the verified independent-character regions to obtain the information of the plate characters. Thereby, the present invention has the advantages of high accuracy, learning capability and fast realtime operation.
交大e-News第016期
(2007-12-20)
Secretariat
;
國立交通大學秘書室
Classification of dynamic vibronic couplings in vibrational real-time spectra of a thiophene derivative by few-cycle pulses
(2007-12-20)
Kobayashi, Takayoshi
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Wang, Zhuan
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Otsubo, Tetsuo
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電子物理學系
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Department of Electrophysics
Pump-probe spectroscopy was performed with a few cycle pulses of 6.7 fs duration. The electronic transition intensity modulation was induced by molecular vibration in a quinoid thiophene molecule in solution. The real-time vibrational features were analyzed in terms of dependence of vibrational amplitude and phase on probe photon energy. The electronic transition probability is modulated by molecular vibration via vibronic coupling. Changes in the spectral shape and intensity of the time-resolved spectrum were studied by tracking characteristic spectral features including the peak frequency and intensity, spectral bandwidth, and band-integrated intensity. From the analysis the modulation mechanisms were classified into two groups: (1) Condon type and (2) non-Condon type. The features of the wave packet motions were also classified into zeroth-order derivatives due to quasi-pure non-Condon type and first- and second-order derivative types due to the displacement of the potential minimum and the potential curvature change associated with the relevant vibronic transition, respectively.
Infrared absorption of gaseous CH(3)OO detected with a step-scan Fourier-transform spectrometer
(2007-12-21)
Huang, Deng-Ruei
;
Chu, Li-Kang
;
Lee, Yuan-Pern
;
應用化學系分子科學碩博班
;
Institute of Molecular science
CH(3)OO radicals were produced upon irradiation of a flowing mixture of CH(3)I and O(2) with a KrF excimer laser at 248 nm. A step-scan Fourier-transform spectrometer coupled with a multipass absorption cell was employed to record temporally resolved IR absorption spectra of reaction intermediates. Transient absorption bands with origins at 3033, 2954, 1453, 1408, 1183, 1117, 3020, and 1441 cm(-1) are assigned to nu(1)-nu(6), nu(9), and nu(10) modes of CH(3)OO, respectively, close to wavenumbers reported for CH(3)OO isolated in solid Ar. Calculations with density-functional theory (B3LYP/aug-cc-pVTZ) predicted the geometry and the vibrational wavenumbers of CH(3)OO; the vibrational wavenumbers and relative IR intensities of CH(3)OO agree satisfactorily with these observed features. The rotational contours of IR spectra of CH(3)OO, simulated based on ratios of predicted rotational parameters for the upper and lower states and on experimental rotational parameters of the ground state, agree satisfactorily with experimental results; the mixing ratios of a-, b-, and c-types of rotational structures were evaluated based on the direction of dipole derivatives predicted quantum chemically. A feature at 995 cm(-1), ascribed to CH(3)OOI from a secondary reaction of CH(3)OO with I, was also observed. (c) 2007 American Institute of Physics.
Infrared absorption of gaseous CH3OO detected with a step-scan Fourier-transform spectrometer
(2007-12-21)
Huang, Deng-Ruei
;
Chu, Li-Kang
;
Lee, Yuan-Pern
;
應用化學系
;
應用化學系分子科學碩博班
CH3OO radicals were produced upon irradiation of a flowing mixture of CH3I and O-2 with a KrF excimer laser at 248 nm. A step-scan Fourier-transform spectrometer coupled with a multipass absorption cell was employed to record temporally resolved IR absorption spectra of reaction intermediates. Transient absorption bands with origins at 3033, 2954, 1453, 1408, 1183, 1117, 3020, and 1441 cm(-1) are assigned to nu(1)-nu(6), nu(9), and nu(10) modes of CH3OO, respectively, close to wavenumbers reported for CH3OO isolated in solid Ar. Calculations with density-functional theory (B3LYP/aug-cc-pVTZ) predicted the geometry and the vibrational wavenumbers of CH3OO; the vibrational wavenumbers and relative IR intensities of CH3OO agree satisfactorily with these observed features. The rotational contours of IR spectra of CH3OO, simulated based on ratios of predicted rotational parameters for the upper and lower states and on experimental rotational parameters of the ground state, agree satisfactorily with experimental results; the mixing ratios of a-, b-, and c-types of rotational structures were evaluated based on the direction of dipole derivatives predicted quantum chemically. A feature at 995 cm(-1), ascribed to CH3OOI from a secondary reaction of CH3OO with I, was also observed. (c) 2007 American Institute of Physics.
理想‧自由－鄔定衡
(2007-12-23)
吳念慈
;
Department of Communication and Technology
;
傳播與科技學系
從大學生失業率高、起薪又低說起。許多高中生放棄一般的大學生活，選擇投入軍警體系，生活規律、薪水穩定，減輕父母不少學雜費的負擔，但犧牲了自由與理想。鄔定衡，政戰學校心理系畢業兩年，畢業分發抽到海巡，目前是基隆和平島安全檢查所副所長。畢業後沒有歷經待業的過程，順利踏入社會，但是工作時間不自由，日夜顛倒，工作內容與所學的心理也大相逕庭，所以他打算重拾書本，考心理研究所在職專班，走一條自己想走的路。
「萬般皆下品　唯有讀書高」？
(2007-12-23)
盧沛樺
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Department of Communication and Technology
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傳播與科技學系
從一起自殺案件端倪台灣教改制度
王柏升─MEEYA讓人與人更靠近
(2007-12-23)
姜建亨
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Department of Communication and Technology
;
傳播與科技學系
於12/19正式上線的ｍｅｅｙａ是一個網路平台有點像是一個人脈網可以連結校園社群人脈介紹創辦人及創辦理念與中間心路歷程
網路相簿　網路美女效應
(2007-12-23)
黃夙蓮
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Department of Communication and Technology
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傳播與科技學系
網路美女變相發燒
科學園區　規劃下的世外桃源
(2007-12-23)
呂伯芬
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Department of Communication and Technology
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傳播與科技學系
園區不為人知的一面
話說聖誕
(2007-12-23)
謝甄芳
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Department of Communication and Technology
;
傳播與科技學系
節慶
博彩業蓬勃發展─澳門
(2007-12-23)
鄧詠兒
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Department of Communication and Technology
;
傳播與科技學系
博彩業蓬勃的發展下
永不輕言放棄─洪國恩
(2007-12-23)
汪承漢
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Department of Communication and Technology
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傳播與科技學系
電控99洪國恩雖然兩腿膝蓋都開過刀但熱愛籃球的他仍不放棄籃球
網路遊戲的是與非
(2007-12-23)
陳濡群
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Department of Communication and Technology
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傳播與科技學系
現代網路遊戲蓬勃發展但也帶來一些隱憂因此來探討其中的現象
滾滾韓流－中國V.S韓國
(2007-12-23)
沈昭邦
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Department of Communication and Technology
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傳播與科技學系
無論韓國經濟是不是真的比台灣好，他們的GNP比台灣人民高已是不爭的事實，這本書以一個大陸人的觀點來看韓國這個國家
第十二期總編輯的話
(2007-12-23)
彭敬雅
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Department of Communication and Technology
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傳播與科技學系
總編輯的話
龐克文化　教條閃邊站
(2007-12-23)
蔡昇峰
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Department of Communication and Technology
;
傳播與科技學系
地下樂團拷秋勤嗩吶手阿雞專訪受訪者臨時因故無法接受採訪，本週改發文化現象，人物專訪順延至下週發稿。
商業炒作　歡樂無限
(2007-12-23)
鄭瑋津
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Department of Communication and Technology
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傳播與科技學系
聖誕節、情人節、跨年已經變成一種商業化的產物，在商人、媒體的炒作之下，這些節日變成了什麼模樣。
《變人》「他」？或是「它」？
(2007-12-23)
林暐家
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Department of Communication and Technology
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傳播與科技學系
一部感人電影