Browsing by Issue Date, starting with "2012-11-28"

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五四時期的青春之歌：郁達夫《沉淪》與丁玲《莎菲女士的日記》
(2012-11-28)
蘇敏逸
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開放教育推動中心
;
Open Education Office
課程首頁本課程是由交通大學新文藝復興閱讀計畫提供。 96 年 8 月當各大學紛紛摩拳擦掌準備迎接新生的同時，交通大學校長吳重雨則因為一則來自於七月份泰晤士報，有關於英國首相布朗公布其夏日讀書清單的新聞中，看到了他對知識的尊重。在這同時，吳重雨校長也思考著，要如何為學生準備追求知識的環境和激發他們對知識的尊重與喜愛。台積電張忠謀董事長曾陳述他 18 歲進入哈佛那一年，博覽文史哲理工經典群籍，至此奠定了他求知的基礎，並借海明威名言，將其改為「哈佛這一年為人生可帶走的盛宴。」吳重雨校長以張董事長的學習為借鏡，認為學生固然能藉由自我閱讀的方式學習到豐沛的知識，但透過名人、大師親臨現場地介紹經典書籍，更能加深學子們對於書籍的認識與興趣，這也是「新文藝復興閱讀計劃」 ( 以下簡稱 : 「經典名著選讀」 ) 活動展開籌劃的緣由。於是，吳重雨校長便積極敦請「交大通識教育委員會」，接手籌備本計劃的相關活動，而該中心也成為實際施行本計畫的策動、開課以及認證單位。至此，期許交大學子藉由閱讀、聽講來提昇人文素養、開拓視野的「新文藝復興閱讀計劃」，就此展開。
Automatic Age Estimation System for Face Images Regular Paper
(2012-11-28)
Lin, Chin-Teng
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Li, Dong-Lin
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Lai, Jian-Hao
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Han, Ming-Feng
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Chang, Jyh-Yeong
Humans are the most important tracking objects in surveillance systems. However, human tracking is not enough to provide the required information for personalized recognition. In this paper, we present a novel and reliable framework for automatic age estimation based on computer vision. It exploits global face features based on the combination of Gabor wavelets and orthogonal locality preserving projections. In addition, the proposed system can extract face aging features automatically in real-time. This means that the proposed system has more potential in applications compared to other semi-automatic systems. The results obtained from this novel approach could provide clearer insight for operators in the field of age estimation to develop real-world applications.
MULTILAYER SUBSTRATE HAVING GALLIUM NITRIDE LAYER AND METHOD FOR FORMING THE SAME
(2012-11-29)
Chang Edward Yi
;
Hsiao Yu-Lin
;
Lu Jung-Chi
The present invention provides a method for forming a multilayer substrate having a gallium nitride layer, wherein a mesh layer having a plurality of openings is formed on a substrate, and a buffer layer, three aluminum gallium nitride layers with different aluminum concentrations and a gallium nitride layer are formed in sequence on the substrate in the openings. The three aluminum gallium nitride layers with different aluminum concentrations are capable of releasing stress, decreasing cracks on the surface of the gallium nitride layer and controlling interior defects, such that the present invention provides a gallium nitride layer with larger area, greater thickness, no cracks and high quality for facilitating the formation of high performance electronic components in comparison with the prior art. The present invention further provides a multilayer substrate having a gallium nitride layer.
High-Gain Complementary Inverter with Ambipolar Thin Film Transistors and Fabrication Thereof
(2012-11-29)
Liu Po-Tsun
;
Chou Yi-Teh
;
Teng Li-Feng
;
Fu Chur-Shyang
;
Shieh Han-Ping
The present invention relates to a high gain complementary inverter with ambipolar thin film transistors and fabrication thereof, comprising: a gate layer, a silica layer, a first active layer, a first source, a first drain, a second active layer, a second source and a second drain for fabrication cost and complexity reduction.
MODEL-BASED CHANNEL ESTIMATOR FOR CORRELATED FADING CHANNELS AND CHANNEL ESTIMATION METHOD THEREOF
(2012-11-29)
Chen Yen-Chih
;
Cheng Chien-Chun
;
Su Yu-Ted
A model-based channel estimator for correlated fading channels adapted to a multiple-input multiple-output (MIMO) system, estimates a coefficient vector of a channel matrix for a given angle of departure (AoD) according to a plurality of received signals, a plurality of transmit pilots, a plurality of known model orders, and a plurality of predetermined bases for exploiting time, frequency, spatial channel correlation among a transmit antenna array, and spatial channel correlation among a receive antenna array, then estimates a mean AoD based on the estimated channel matrix. The channel estimator estimates iteratively the coefficient vector and the mean AoD until a stop criterion is met. Then, it reconstructs a channel estimate by using the plurality of predetermined bases, the coefficient vector, and the mean AoD.
MICROFLUIDIC SYSTEM AND METHOD FOR CREATING AN ENCAPSULATED DROPLET WITH A REMOVABLE SHELL
(2012-11-29)
FAN SHIH-KANG
;
HSU YAO-WEN
;
CHEN CHIUN-HSUN
A microfluidic system for creating encapsulated droplets whose shells can be further removed comprises: two electrode plates and a spacing structure disposed between the two electrode plates. One of the electrode plates has three reservoir electrodes and a plurality of channel electrodes. The three electrodes are respectively used for accommodating a shell liquid, a core liquid, and a removing liquid which is able to remove the shell liquid. The channel electrodes are used for communicating droplets among the three reservoir electrodes. Via these arrangements, the microfluidic system can create a quantitative shell droplet and a quantitative core droplet, and then merge the shell and core droplets to form an encapsulated droplet. Moreover, the shell of the encapsulated droplet can be removed by mixing it with the removing liquid. This invention is further provided with a method for creating an encapsulated droplet with a removable shell.
Facile Synthesis of Radial-Like Macroporous Superparamagnetic Chitosan Spheres with In-Situ Co-Precipitation and Gelation of Ferro-Gels
(2012-11-30)
Yang, Chih-Hui
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Wang, Chih-Yu
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Huang, Keng-Shiang
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Yeh, Chen-Sheng
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Wang, Andrew H. -J.
Macroporous chitosan spheres encapsulating superparamagnetic iron oxide nanoparticles were synthesized by a facile and effective one-step fabrication process. Ferro-gels containing ferrous cations, ferric cations and chitosan were dropped into a sodium hydroxide solution through a syringe pump. In addition, a sodium hydroxide solution was employed for both gelation (chitosan) and co-precipitation (ferrous cations and ferric cations) of the ferro-gels. The results showed that the in-situ co-precipitation of ferro-ions gave rise to a radial morphology with non-spheroid macro pores (large cavities) inside the chitosan spheres. The particle size of iron oxide can be adjusted from 2.5 nm to 5.4 nm by tuning the concentration of the sodium hydroxide solution. Using Fourier Transform Infrared Spectroscopy and X-ray diffraction spectra, the synthesized nanoparticles were illustrated as Fe3O4 nanoparticles. In addition, the prepared macroporous chitosan spheres presented a super-paramagnetic behaviour at room temperature with a saturation magnetization value as high as ca. 18 emu/g. The cytotoxicity was estimated using cell viability by incubating doses (0 similar to 1000 mu g/mL) of the macroporous chitosan spheres. The result showed good viability (above 80%) with alginate chitosan particles below 1000 mu g/mL, indicating that macroporous chitosan spheres were potentially useful for biomedical applications in the future.
k-Angle Object Coverage Problem in a Wireless Sensor Network
(2012-12-01)
Tseng, Yu-Chee
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Chen, Po-Yu
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Chen, Wen-Tsuen
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資訊工程學系
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Department of Computer Science
One of the fundamental issues in sensor networks is the coverage problem, which reflects how well a field is monitored or tracked by sensors. Various versions of this problem have been studied, such as object, area, barrier, and hole coverage problems. In this paper, we define a new k-angle object coverage problem in a wireless sensor network. Each sensor can only cover a limited angle and range, but can freely rotate to any direction to cover a particular angle. Given a set of sensors and a set of objects at known locations, the goal is to use the least number of sensors to k-angle-cover the largest number of objects such that each object is monitored by at least k sensors satisfying some angle constraint. We propose centralized and distributed polynomial-time algorithms to solve this problem. Simulation results show that our algorithms can be effective in maximizing coverage of objects. A prototype system is developed to demonstrate the usefulness of angle coverage.
Item Selection for the Development of Parallel Forms From an IRT-Based Seed Test Using a Sampling and Classification Approach
(2012-12-01)
Chen, Pei-Hua
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Chang, Hua-Hua
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Wu, Haiyan
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應用化學系
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管理科學系
Two sampling-and-classification-based procedures were developed for automated test assembly: the Cell Only and the Cell and Cube methods. A simulation study based on a 540-item bank was conducted to compare the performance of the procedures with the performance of a mixed-integer programming (MIP) method for assembling multiple parallel test forms. The study investigated the statistical equivalence of the forms generated by the three test assembly methods (Cell Only, Cell and Cube, and MIP) in terms of test information functions, test characteristic curves, mean square deviations, and practical constraints, such as content balancing and nonoverlap among forms. The results indicated that the 13-point MIP method outperformed the other two methods in terms of the "closeness" test information functions between the reference form and the assembled parallel tests. Regarding test characteristic curves, the Cell Only and Cell and Cube methods yielded more similar test characteristic curves than the MIP method. Constraining test information functions apparently does not guarantee that the assembled forms will yield similar test characteristic curves. Overall, the Cell Only and Cell and Cube methods have the potential to provide results similar to the optimization approach.
毛語言及其批判之可能
(深河出版有限公司, 2012-12-01)
黃子平
變動中的集體聽覺：模糊的訊號
(深河出版有限公司, 2012-12-01)
王明輝
Enhanced carrier extraction efficiency in organic solar cells with reduced space-charge limited transport by engineered vertical compositional profile
(2012-12-01)
Lee, Ming-Kun
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Kuo, Tsung-Han
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Kong, Kuo-Wen
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Hong, Yun-Ru
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Wang, Jen-Chun
A multi-layered polymer solar cell (PSC) with a graded compositional profile to reduce space-charge limited (SCL) transport was designed and analyzed in details. We found that by increasing the effective carrier lifetime for the slower photo-carriers. SCL effects that degrade the fill factor and the power conversion efficiency can be alleviated in PSCs with a thick active layer. The reduction of SCL effects was evidenced by a diminished dependence of the incident photon-to-electron conversion efficiency (IPCE) on light bias, which also indicates the importance of light bias in characterizing the operating IPCE of PSCs with thick active layers which operate in SCL region. Based on our results, device architecture to enhance FF was proposed. (C) 2012 Elsevier B.V. All rights reserved.
頂尖男子桌球選手比賽技術比較分析
(國立交通大學體育室, 2012-12-01)
郭山本
;
陳金海
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游鳳芸
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郭明珍
;
Shan-Ben Kuo
目的：分析頂尖男子桌球選手綜合技術表現並比較我國與世界頂尖男子桌球選手綜合技術表現差異。方法：採用觀察法蒐集2008年參加世界盃桌球賽的各國頂尖選手11場比賽22筆資料，以桌球比賽綜合技術統計表為研究工具，所得資料以敘述統計、t檢定等方法來進行分析。結果：一、頂尖男子桌球選手各項綜合技術得分率及使用率最多的都是正手側發球搶攻。二、我國與世界頂尖男子桌球選手各項綜合技術得分率與使用率差異比較，只有蔣澎龍在正手側推攻使用率與世界頂尖男子桌球選手達顯著差異，其他各項綜合技術都未達顯著差異。結論：頂尖男子桌球選手比賽最重要綜合技術為正手側發球搶攻。
一個台灣人的紅衛兵印象
(深河出版有限公司, 2012-12-01)
鄭鴻生
阿妹／台妹：關於流行音樂研究的一點想法
(深河出版有限公司, 2012-12-01)
蔡孟哲
Optimization of the Single-Phased White Phosphor of Li2SrSiO4:Eu2+, Ce3+ for Light-Emitting Diodes by Using the Combinatorial Approach Assisted with the Taguchi Method
(2012-12-01)
Chen, Lei
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Luo, Anqi
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Zhang, Yao
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Liu, Fayong
;
Jiang, Yang
The best performance of the phosphor Li2SrSiO4: Eu2+, Ce3+ in terms of luminescence efficiency (LE), color rendering index (CRI) and color temperature (Tc) for light-emitting diode application was optimized with combinatorial approach. The combinatorial libraries were synthesized with solution-based method and the scale-up samples were synthesized with conventional solid-reaction method. Crystal structure was investigated by using the X-ray diffraction spectrometer. The emission spectra of each sample in combinatorial libraries were measured in situ by using a fiber optic spectrometer. Fluorescence spectrometers were used to record excitation and emission spectra of bulk samples. White light generation was tuned up by tailoring Eu2+ and Ce3+ concentrations in the single-phased host of Li2SrSiO4 under near-ultraviolet excitation, but it exhibited low efficiency of luminescence and poor color rendering index. The effects of each level of the Eu2+ and Ce3+ concentrations on LE, CRI, and Tc were evaluated with the Taguchi method. The optimum levels of the interaction pairs between Eu2+ and Ce3+ concentration on LE, CRI, and Tc were [2,1] (0.006 M, 0.003 M), [1, 2] (0.003 M, 0.006 M), and [3, 1] (0.009 M, 0.00 3M), respectively. The thermal stability of luminescence, the external quantum efficiency (QE), luminance, chromaticity coordinates, correlated color temperature, color purity including the composition ratio of RGB in white light, and color rendering index of the white light emission of phosphor were evaluated comprehensively from a bulk sample.
Resonance fluorescence spectra near a photonic bandgap
(2012-12-01)
Lai, Yinchieh
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光電工程學系
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Department of Photonics
兩種民族主義：讀了劉大任〈反芻民族主義〉
(深河出版有限公司, 2012-12-01)
何懷碩
投籃輔助器對投籃時籃球軌跡與旋轉圈數之影響
(國立交通大學體育室, 2012-12-01)
陳忠強
;
Chiang-Chung Chen
本研究之目的：是在探討籃球選手投籃時籃球軌跡與旋轉圈數之研究，瞭解選手佩帶與未佩帶投籃輔助器時的投籃軌跡與球體轉數的差異性。方法：以不同位置的男子籃球選手為對象（小前鋒、大前鋒、中鋒），分別以未佩帶與佩帶投籃輔助器的方式進行20次的罰球線投籃試驗，並以高速攝影機從受測者的側面與背面進行拍攝，再利用影像分析來觀察從出手之後至碰到籃框間籃球的軌跡及轉數。結論：受測者佩戴投籃輔助器投籃時，籃球的軌跡高於未佩戴時，球的轉數變異係數也降低。由此現象我們推估，戴上投籃輔助器之後，投籃的出手姿勢的穩定度增加了。未來研究與實際應用建議詳見內文。
Molecular engineering of cocktail co-sensitization for efficient panchromatic porphyrin-sensitized solar cells
(2012-12-01)
Wu, Hui-Ping
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Ou, Zih-Wei
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Pan, Tsung-Yu
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Lan, Chi-Ming
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Huang, Wei-Kai
Co-sensitization of two or more dyes with complementary absorption spectra on a semiconductor film is an effective approach to enhance the performance of a dye-sensitized solar cell (DSSC). Porphyrin sensitizer YD2-oC8 showed outstanding photovoltaic performance co-sensitized with an organic dye to cover the entire visible spectral region, 400-700 nm. To promote the light-harvesting capability beyond 700 nm, a porphyrin dimer (YDD6) was synthesized for a co-sensitized system. We report a systematic approach for engineering of molecular co-sensitization of TiO2 films in a cocktail solution containing YD2-oC8, an organic dye (CD4) and YDD6 in a specific molar ratio to optimize the photovoltaic performance of the device. The resulting device showed panchromatic spectral features in the IPCE action spectrum in the region 400-700 nm attaining efficiencies of 75-80%; the spectrum is extended to the near-IR region attaining 40-45% in 700-800 nm region, giving J(SC)/mA cm(-2) = 19.28, V-OC/mV = 753, FF = 0.719, and eta = 10.4% under standard AM 1.5 G one-sun irradiation. This performance is superior to what is obtained from the individual single-dye devices and the two-dye co-sensitized systems. The shifts of TiO2 potential upon dye uptake and the kinetics of charge recombination were examined through measurements of the charge extraction (CE) and intensity-modulated photovoltage spectroscopy (IMVS), respectively. Five co-sensitized systems were investigated to demonstrate that suppression of dye aggregation of YDD6 in the co-sensitized film is a key factor to further improve the device performance.