Browsing by Issue Date, starting with "2011-08-26"

Now showing 1 - 20 of 40633

Novel approach towards 2-substituted aminobenzimidazoles on imidazolium ion tag under focused microwave irradiation
(2011-08-26)
Chanda, Kaushik
;
Maiti, Barnali
;
Chung, Wen-Sheng
;
Sun, Chung-Ming
;
應用化學系
We have developed an efficient, parallel synthesis of 2-substituted aminobenzimidazoles via intramolecular ring closing reactions of imidazolium ion tag immobilized o-phenylenediamine with various isothiocyanates. The methodology is based on the attachment of 4-fluoro-3-nitro benzoic acid into the imidazolium ion tag, which enables the S(N)Ar reactions with different amines followed by neutral reduction to furnish o-phenylenediamines under microwave irradiation. The substituted isothiocyanates are reacted with o-phenylenediamines to form monothiourea, which is further activated by methyl iodide to undergo desulfurization in one pot manner. The ionic liquid bound 2-substituted aminobenzimidazoles were finally cleaved from the support with sodium methoxide to generate target compounds in good yields and high purities with two points of structural diversity. This synthetic protocol has promising features of extremely short reaction time, operational simplicity, good yields, as well as widespread applications, leading to a facile and straightforward admittance to structurally diverse 2-substituted aminobenzimidazole analogues with potential bioactivities. (C) 2011 Elsevier Ltd. All rights reserved.
Photoactivation studies of zinc protoporphyrin-myoglobin system and its application for light-chemical energy conversion
(2011-08-28)
Wu, Tung-Kung
;
生物科技學系
;
Department of Biological Science and Technology
Genotoxicity of safrole oxide in HEPG2 cells and in mice
(2011-08-28)
Chiang, S.
;
Lee, P.
;
Shen, L.
;
Huang, H.
;
Chung, W.
Organic photovoltaics incorporating new fulleroisoquinolinones and fulleroindolines as n-type materials: Syntheses and performance studies
(2011-08-28)
Chuang, Shih-Ching
;
Chen, Chih-Ping
;
應用化學系
;
Department of Applied Chemistry
Three-component and alpha-Michael reaction of phosphines with En-ynes and aldehydes: Formation of gamma-lactones featuring alpha-phosphorus ylides
(2011-08-28)
Deng, Jie-Cheng
;
Chuang, Shih-Ching
;
應用化學系
;
Department of Applied Chemistry
Assembling and crystallization of amino acids and proteins by intense laser irradiation in solution
(2011-08-28)
Masuhara, Hiroshi
;
Sugiyama, Teruki
;
Yuyama, Ken-ichi
;
Uwada, Takayuki
;
Miura, Atsushi
Exploring combinatorial potential of K-252c biosynthesis by precursor-directed enzyme-coupling reactions
(2011-08-28)
Chiu, Hsien-Tai
;
Chen, Yi-Lin
;
Lin, Yu-Chin
;
Lee, Meng-Na
;
生物科技學系
Investigation for coexistence of dual resistive switching characteristics in DyMn(2)O(5) memory devices
(2011-08-29)
Tsai, Yu-Ting
;
Chang, Ting-Chang
;
Huang, Wei-Li
;
Huang, Chih-Wen
;
Syu, Yong-En
Dual bipolar resistive switching characteristics were observed in the Pt/DyMn(2)O(5)/TiN memory devices. The typical switching effect could be attributed to the formation and rupture of the conducting filament in DyMn(2)O(5) films. The parasitic switching behavior can be observed in the specific operation condition. Dual bipolar resistance switching behaviors of filament-type and interface-type can coexist in the devices by appropriate voltage operation. The operating current can be significantly decreased (100 times) by parasitic switching operation for portable electronic product application. In addition, the relationship between filament-type and interface-type switching behaviors were studied in this paper. (C) 2011 American Institute of Physics. [doi:10.1063/1.3629788]
Cost-effective 33-Gbps intensity modulation direct detection multi-band OFDM LR-PON system employing a 10-GHz-based transceiver
(2011-08-29)
Hsu, Dar-Zu
;
Wei, Chia-Chien
;
Chen, Hsing-Yu
;
Li, Wei-Yuan
;
Chen, Jyehong
We develop a dynamic multi-band OFDM subcarrier allocation scheme to fully utilize the available bandwidth under the restriction of dispersion-and chirp-related power fading. The experimental results successfully demonstrate an intensity-modulation-direct-detection 34.78-Gbps OFDM signal transmissions over 100-km long-reach (LR) passive-optical networks (PONs) based on a cost-effective 10-GHz EAM and a 10-GHz PIN. Considering 0-100-km transmission bandwidth of a 10-GHz EAM, the narrowest bandwidth is theoretically evaluated to occur at similar to 40 km, instead of 100 km. Consequently, the performances of 20-100-km PONs are experimentally investigated, and at least 33-Gbps capacity is achieved to support LR-PONs of all possible 20-100-km radii. (C) 2010 Optical Society of America
Investigation for coexistence of dual resistive switching characteristics in DyMn2O5 memory devices
(2011-08-29)
Tsai, Yu-Ting
;
Chang, Ting-Chang
;
Huang, Wei-Li
;
Huang, Chih-Wen
;
Syu, Yong-En
Dual bipolar resistive switching characteristics were observed in the Pt/DyMn2O5/TiN memory devices. The typical switching effect could be attributed to the formation and rupture of the conducting filament in DyMn2O5 films. The parasitic switching behavior can be observed in the specific operation condition. Dual bipolar resistance switching behaviors of filament-type and interface-type can coexist in the devices by appropriate voltage operation. The operating current can be significantly decreased (100 times) by parasitic switching operation for portable electronic product application. In addition, the relationship between filament-type and interface-type switching behaviors were studied in this paper. (C) 2011 American Institute of Physics. [doi:10.1063/1.3629788]
Detailed balance model for intermediate band solar cells with photon conservation
(2011-08-29)
Lin, Chien-chung
;
Liu, Wei-Ling
;
Shih, Ching-Yu
;
光電系統研究所
;
Institute of Photonic System
We developed a comprehensive detailed balance model of intermediate band solar cell (IBSC). The key feature of our model is based on the conservation of photons in solar spectrum. Together with parametric analysis of carrier partition, we calculated the power conversion efficiency and found an enhancement of 1.5 times in wide band gap material IBSC (such as GaN). On the other hand, this model can also explain the inferior performance of GaAs-based IBSC through the degradation of open-circuit voltages, which can be attributed to the strong non-radiative recombination and the increased photo-generated carriers. The resulting maximum efficiency is complied with the classical Shockley-Queisser limit, and should be considered for the future IBSC design. (C) 2011 Optical Society of America
Holographic information recording and reproducing apparatus for the same
(2011-08-30)
Hsieh Mei Li
;
Lin Shiuan Huei
;
Wang Jui Hsin
;
Hsu Ken Yuh
;
Chiang Don Yau
In a holographic information recording and reproducing apparatus, an optical fiber guides a reference beam toward a recording medium for holographic recording, and a precision rotator is turned, so that the reference beam is incident on the recording medium at different angles and interferes with a data-carrying signal beam to complete the recording of holographic information on the recording medium. To reproduce the holographic information, the optical fiber guides a reading beam, and the reading beam is incident on the recording medium at an angle the same as the reference beam for the recording to reproduce the holographic information stored on the recording medium. With the optical fiber and the precision rotator, a simplified light path system and a wide range of incident angles for the reference and reading beams may be achieved, and the transmissive, reflective, and 90-degree holographic storage techniques may be integrated in one single apparatus.
Soluble phenanthrenyl imidazole for photo-electrical conversion of solar cell
(2011-08-30)
Wei Kung-Hwa
;
Chang Yao-Te
A novel material of phenanthrenyl imidazole is applied to a solar cell. A phenanthrenyl-imidazole moiety is introduced to reduce a power band of a polymer, so that a photocurrent and an optoelectrical transformation efficiency are improved. Thus, a polymer having the novel material is very suitable to be used in a solar cell to acquire a high optoelectrical transformation efficiency.
基督新教與西拉雅族的第一次接觸：論荷蘭亞米紐斯主義者在福爾摩莎的傳教事工（1627-1643）
(國立陽明交通大學出版社, 2011-09-01)
張孝慧
為了發展在中國、日本與東南亞的貿易，聯合東印度公司於西元1624年登陸大員（今台南安平）。荷蘭人原本的目的只是以大員為貿易據點，無意統治福爾摩莎全島。然而，入主大員之後，福爾摩莎肥沃的土地、豐盛的漁獲量及鹿產，吸引聯合東印度公司著手經營福爾摩莎。經營此島的首要工作就是與靠近大員一帶的原住民－西拉雅族－維繫友好關係，同時培養人力。這份任務落在由聯合東印度公司派遣至福爾摩莎的傳教士肩上，基督新教因此傳入福爾摩莎。受歐洲宗教改革的影響，荷蘭本國於17世紀仍有許多基督教義之爭；其中亞米紐斯主義與加爾文主義的爭論深深影響傳教士在福爾摩莎的傳教事工。1627至1643年赴福爾摩莎的傳教士多為亞米紐斯主義者。此一時期，傳教士認為自己必須學習原住民的語言，為他們創造一套羅馬拼音的文字，進而帶領他們認識基督信仰。在學習文字的同時，西拉雅族閱讀了基督教義文本，接受基督信仰的人口比例不斷提高，甚至有全村受浸成為基督徒的案例。筆者將分別考察荷蘭人與西拉雅族的宗教與文化背景，分析其中異同，並且輔以漢人為參照對象，探究原住民歸信基督教的過程以及在17世紀的福爾摩莎形成的一種原－荷融合的文化。
Critical-Trunk-Based Obstacle-Avoiding Rectilinear Steiner Tree Routings and Buffer Insertion for Delay and Slack Optimization
(2011-09-01)
Lin, Yen-Hung
;
Chang, Shu-Hsin
;
Li, Yih-Lang
;
交大名義發表
;
National Chiao Tung University
For modern designs, delay optimization significantly facilitates success in design closure owing to its more realistic metric than wirelength in routing. Obstacle-avoiding rectilinear Steiner tree (OARST) construction is an essential routing problem. With the trends toward Internet protocol-block-based system-on-chip designs, OARST with buffer insertion has been surveyed to diminish the delay of long wires. Previous works on performance-driven (PD) OARST without and with buffer insertion can only handle small circuits. This paper develops a novel routing algorithm in obstacle-avoiding spanning graph to construct OARST with optimized delay efficiently. The proposed multisource single-target maze routing is first employed to identify the critical trunks, and the critical-trunk-based tree growth mechanism connects the unconnected pins to critical trunks under delay constraints of every sink. We apply the proposed critical-trunk-based tree growth mechanism to solve PD and slack-driven (SD) OARST problems. The proposed algorithms are extended to consider buffer insertion during PD and SD OARST constructions. Experimental results demonstrate that the proposed algorithms achieve an average 25.84% improvement in the maximum delay over obstacle-avoiding rectilinear Steiner minimal tree in the PD OARST problem and successfully solve 66.67% worst negative slack violations in the SD OARST problem. Compared to the simultaneous routing and buffer insertion approach, the proposed buffer-aware (BA) algorithm generates satisfactory timing results with almost identical wire length (WL). Moreover, the proposed BA SD OARST algorithm utilizes less WL than the BA rectilinear Steiner tree construction does by 17.99% on average. The runtime comparison with previous works shows the efficiency and scalability of this paper.
Bargaining framework for competitive green supply chains under governmental financial intervention
(2011-09-01)
Sheu, Jiuh-Biing
;
運輸與物流管理系註：原交通所+運管所
;
Department of Transportation and Logistics Management
This work investigates the problem of negotiations between producers and reverse-logistics (RL) suppliers for cooperative agreements under government intervention. Utilizing the asymmetrical Nash bargaining game with uncertainties, this work seeks equilibrium negotiation solutions to player agendas. Analytical results indicate that financial intervention by a government generates a significant effect on the relative bargaining power of green supply chain members in negotiations. Over intervention by a government may result in adverse effects on chain members' profits and social welfare. Furthermore, a bargaining framework underlying the duopoly-oligopoly context may contribute to a negotiation outcome most profitable for green supply chain members. (C) 2011 Elsevier Ltd. All rights reserved.
Geometrically induced stress singularities in a piezoelectric body of revolution
(2011-09-01)
Huang, C. S.
;
Hu, C. N.
;
土木工程學系
;
Department of Civil Engineering
An eigenfunction expansion approach is combined with a power series solution technique to establish the asymptotic solutions for geometrically induced electroelastic singularities in a piezoelectric body of revolution, with its direction of polarization not parallel to the axis of revolution. The asymptotic solutions are obtained by directly solving the three-dimensional equilibrium and Maxwell's equations in terms of displacement components and electric potential. When the direction of polarization is not along the axis of revolution, the assumption of axisymmetric deformation that is often made in the published literature is not valid, and the direction of polarization and the circular coordinate variable can substantially affect the singularities. The numerical results related to singularity orders are shown in graphical form for bodies of revolution that comprise a single material (PZT-4 or PZT-5H) or bonded piezo/piezo (PZT-4/PZT-5H) or piezo/isotropic elastic (PZT-4/Al or PZT-5H/Al) materials. This is the first study to present results for the direction of polarization not along the axis of revolution. (C) 2011 Elsevier Ltd. All rights reserved.
Using differential SAR interferometry to map land subsidence: a case study in the Pingtung Plain of SW Taiwan
(2011-09-01)
Hsieh, Chia-Sheng
;
Shih, Tian-Yuan
;
Hu, Jyr-Ching
;
Tung, Hsin
;
Huang, Mong-Han
Synthetic aperture radar (SAR) interferometry (InSAR) is a geodetic tool widely applied in the studies of earth-surface deformation. This technique has the benefits of high spatial resolution and centimetre-scale accuracy. Differential SAR interferometry (DInSAR) is used to measure ground deformation with repeat-pass SAR images. This study applied DInSAR and persistent scatterers InSAR (PSInSAR) for detecting land subsidence in the Pingtung Plain, southern Taiwan, between 1995 and 2000. In recent years, serious land subsidence occurred along coastal regions of Taiwan as a consequence of over-pumping of underground water. Results of this study revealed that the critical subsidence region is located on the coast near the estuary of Linpien River. It is also found that subsidence was significantly higher during the dry season than the wet season. The maximum annual subsidence rate of the dry season is up to -11.51 cm/year in critical subsidence region and the vertical land movement rate is much slower during the wet season. The average subsidence rates in wet and dry seasons are -0.31 and -3.37 cm/year, respectively. As a result, the subsidence rate in dry seasons is about 3 cm larger than in wet seasons.
污名的比較：殘障與性
(國立陽明交通大學出版社, 2011-09-01)
海澀愛
影像式指向方向之偵測系統及方法
(2011-09-01)
傅智銘
;
黃仲陵
;
簡敬宇
本發明提供一種影像式指向方向之偵測系統及方法，其係以兩台或以上之影像擷取器擷取使用者之數張指向媒介物之影像，如徒手手臂或原子筆之長條狀物體，並以一處理器對擷取之數張指向媒介物影像進行影像處理，機率運算，以穩定的定位出空間中目標位置的三維座標。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空間中之任意目標點，並且可於工作空間中任意走動也可保持高辨析度及高穩定度，可應用於簡報系統中，作為取代雷射筆或滑鼠之人機介面，或使用於空間中家用電器之指向使用。