Browsing by Issue Date, starting with "2008-09-15"

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管管作品二十五首
(2008-09-15)
管管
New approach to fabricate an extremely super-amphiphobic surface based on fluorinated silica nanoparticles
(2008-09-15)
Sheen, Yuung-Ching
;
Huang, Yuan-Chang
;
Liao, Chun-Syong
;
Chou, Hisn-Yi
;
Chang, Feng-Chih
Superoleophobic surfaces possessing static contact angles greater than 140 degrees with organic liquids are extremely rare. A simple approach has been developed to fabricate an extremely superamphiphobic coating material based on fluorinated silica nanoparticles resulting contact angles of water and diiodomethane at 167.5 degrees and 158.6 degrees, respectively. The contact angle of diiodomethane at 158.6 degrees is substantially higher than the highest literature reported value we know of at 110 degrees. In addition, this developed film also possesses extremely high contact angles with other organic liquids such as soybean oil (146.6 degrees), decahysronaphthalene (142.5 degrees), diesel fuel (140.4 degrees), and xylene (140.5 degrees). This developed superamphiphobic organic-inorganic hybrid film possesses unique liquid repellency for both water and organic liquids that can be used as functional coatings on numerous substrates by a simple coating process. (C) 2008 Wiley Periodicals, Inc.
管管作品二十五首
(2008-09-15)
管管
管管作品二十五首
(2008-09-15)
管管
管管作品二十五首
(2008-09-15)
管管
管管作品二十五首
(2008-09-15)
管管
A simple approach toward low-dielectric polyimide nanocomposites: Blending the polyimide precursor with a fluorinated polyhedral oligomeric silsesquioxane
(2008-09-15)
Ye, Yun-Sheng
;
Yen, Ying-Chieh
;
Chen, Wen-Yi
;
Cheng, Chih-Chia
;
Chang, Feng-Chih
This article describes a new and simple method for preparing polyimide nanocomposites that have very low dielectric constants and good thermal properties: simply through blending the polyimide precursor with a fluorinated polyhedral oligomeric silsesquioxane derivative, octakis(dimethylsiloxyhexafluoropropyl) silsesquioxane (OF). The low polarizability of OF is compatible with polyimide matrices, such that it can improve the dispersion and free volume of the resulting composites. Together, the higher free volume and lower polarizability of OF are responsible for the lower dielectric constants of the PI-OF nanocomposites. This simple method for enhancing the properties of polyimides might have potential applicability in the electronics industry. (C) 2008 Wiley Periodicals, Inc.
Characteristics of GaN-based photonic crystal surface emitting lasers
(2008-09-15)
Lu, Tien-chang
;
Chen, Shih-Wei
;
Kao, Tsung-Ting
;
Liu, Tzu-Wei
;
光電工程學系
Characteristics of GaN-based photonic crystal surface emitting lasers (PCSELs) were investigated and analyzed. The GaN-based PCSEL emits a blue wavelength at 401.8 nm with a linewidth of 1.6 angstrom and shows a threshold energy density about 2.7 mJ/cm(2) under the optical pumping at room temperature. The lasing wavelength emitted from PCSELs with different lattice constants occurs at the calculated band edges showing different polarization angles due to the light diffracted in specific directions, corresponding exactly to Gamma, K, and M directions in the K-space. Furthermore, the PCSEL also shows a spontaneous emission coupling efficiency beta of about 5 X 10(-3) and a characteristic temperature of 148 K. (C) 2008 American Institute of Physics.
Vertically well-aligned epitaxial Ni(31)Si(12) nanowire arrays with excellent field emission properties
(2008-09-15)
Lee, Chung-Yang
;
Lu, Ming-Pei
;
Liao, Kao-Feng
;
Wu, Wen-Wei
;
Chen, Lih-Juann
Vertically well-aligned single crystal Ni(31)Si(12) nanowire (NW) arrays were epitaxially grown on Ni(31)Si(12) films preferentially formed on Ni foil substrates with a simple vapor phase deposition method in one step. The Ni(31)Si(12) NWs are several micrometers in length and 50-80 nm in diameter. The resistivities of the Ni(31)Si(12) NWs were measured to be 51 mu Omega cm by four-terminal electrical measurement. The NWs can carry very high currents and possess excellent field emission properties. The growth of vertically well-aligned Ni(31)Si(12) NW arrays shall lead to significant advantages in the fabrication of vertical Si nanodevices. (C) 2008 American Institute of Physics.
Coverage probability of prediction intervals for discrete random variables
(2008-09-15)
Wang, Hsiuying
;
統計學研究所
;
Institute of Statistics
Prediction interval is a widely used tool in industrial applications to predict the distribution of future observations. The exact minimum coverage probability and the average coverage probability of the conventional prediction interval for a discrete random variable have not been accurately derived in the literature. In this paper, procedures to compute the exact minimum confidence levels and the average confidence levels of the prediction intervals for a discrete random variable are proposed. These procedures are illustrated with examples and real data applications. Based on these procedures, modified prediction intervals with the minimum coverage probability or the average coverage probability close to the nominal level can be constructed. (c) 2008 Elsevier B.V. All rights reserved.
Pragmatical adaptive chaos control from a new double van der Pol system to a new double Duffing system
(2008-09-15)
Ge, Zheng-Ming
;
Li, Shih-Chung
;
Li, Shih-Yu
;
Chang, Ching-Ming
;
機械工程學系
A new pragmatical adaptive control method for different chaotic systems is proposed. Traditional chaos control is limited to decrease chaos of one chaotic system. This method enlarges the effective scope of chaos control. We can control a chaotic system, e.g. a new chaotic double van der Pol system, to a given chaotic or regular system, e.g. a new chaotic double Duffing system or to a damped simple harmonic system. By a pragmatical theorem of asymptotical stability based on an assumption of equal probability of initial point, an adaptive control law is derived such that it can be proved strictly that the common zero solution of error dynamics and of parameter dynamics is asymptotically stable. Numerical simulations are given to show the effectiveness of the proposed scheme. (C) 2008 Elsevier Inc. All rights reserved.
Magnetic phase diagram of type-II superconductors: From high T-c to low T-c superconductors
(2008-09-15)
Li, D.
;
Lin, P. J.
;
Rosenstein, B.
;
電子物理學系
;
Department of Electrophysics
Phase diagram of both high temperature superconductors and low temperature superconductors are studied within the Ginzburg-Landau approach. Due to enhanced thermal fluctuation strength, disorder effects are relatively small in high T-c superconductors and consequently can be studied analytically. The vortex glass transition line is different and well separated from both the melting line and from the so-called second peak lines. On contrary, in low temperature superconductors, the disorder effect is dominant, as the thermal fluctuation strength is very small. Peak effect appears due to cross over of the collective pinning region to stronger pinning region. The location of the peak effect is obtained. The disorder and thermal fluctuation effects on structure phase transition are also studied. (C) 2008 Elsevier B.V. All rights reserved.
管管作品二十五首
(2008-09-15)
管管
管管作品二十五首
(2008-09-15)
管管
應用於低密度奇偶校驗解碼器之迴旋比較方法
(2008-09-16)
洪瑞徽
;
洪瑞鴻
;
陳紹基
本發明提供一種應用於低密度奇偶校驗解碼器之迴旋比較方法,其係在應用奇偶校驗檢查碼(Low density parity check code,LDPC)之解碼器中使用比較器,此比較器利用迴旋比較演算法,從輸入之k個元素中依序去除第n個元素,n=1...k-1,組成k個第一串列後,再將k個元素依次兩兩組合在一起,反覆組合k�log2(k-1)次直到組成k個結束串列,此結束串列與第一串列中皆包含k-1個元素,比較兩者是否相同,若相同則結束,若不相同則重新組合出結束串列。利用此種迴旋比較之方法只需比較k�log2(k-1)次即可取得結束串列,減少基本比較運算的次數,且任何數目之輸入皆適用,亦程式化且接近最佳解。
以半導體製程形成輻射熱測定儀元件的結構及方法
(2008-09-16)
張國明
;
林稔杰
本發明揭露一種以半導體製程形成輻射熱測定儀元件的結構及方法。本發明利用簡單的製程步驟,以及溫度低於攝氏400度的互補式金氧半導體(Complementary Metal Oxide Semiconductor,CMOS)製程相容技術來實現具有高積集因子(Fill Factor)、高良率以及低製作成本的室溫輻射熱測定儀陣列,同時兼顧元件的整體熱特性表現,以及元件結構的完整性。
A hybrid neuro-fuzzy analytical approach to mode choice of global logistics management
(2008-09-16)
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 paper presents a hybrid neuro-fuzzy methodology to identify appropriate global logistics (GL) operational modes used for global supply chain management. The proposed methodological framework includes three main developmental phases: (1) establishment of a GL strategic hierarchy, (2) formulation of GL-mode identification rules, and (3) development of a GL-mode choice model. By integrating advanced multi-criteria decision-making (MCDM) techniques including fuzzy analytical hierarchy process (Fuzzy-AHP), Fuzzy-MCDM, and the technique for order preference by similarity to an ideal solution (TOPSIS), six types of global logistics and operational modes coupled with corresponding fuzzy-based multi-criteria decision-making rules are specified in the second phase. Using the specified fuzzy decision-making rules as the input database, an adaptive neuro-fuzzy inference system (ANFIS) is then developed in the third phase to identify proper GL modes for the implementation of global supply chain management. A numerical study with a questionnaire survey database aimed at the information technology (IT) industries of Taiwan is conducted to illustrate the applicability of the proposed method. (C) 2007 Elsevier B.V. All rights reserved.
混合式識別碼的整合方法
(2008-09-16)
王瑞堂
;
張乃心
;
曾建超
;
劉合翰
本發明是關於一種混合式識別碼的整合方法。透過制訂一種固定格式的識別碼,該識別碼由混合式識別碼分配法則所產生,其使用兩種以上的子識別碼分配法則並加以整合。網路中的實體節點依照該混合式識別碼分配法則設定相鄰節點之識別碼,該動作會持續直到該網路內的每一個節點都含有一組識別碼或可使用之識別碼分發完畢。當網路內要從一個節點繞送封包到另一個節點時,該節點使用混合式繞送機制比對本身和目的端節點的識別碼,並藉由比對結果來決定使用某子識別碼分配法則相對的繞送機制對封包進行繞送。此外,該識別碼將會針對不同的實體分佈或需求整合各分配法則的特性。因此,可以讓不同實體分佈之網路環境,都具有合適的識別碼分配法則,達到識別碼的個別化及識別碼的最佳使用率。
SYSTEM AND PROCESS FOR TREATING WASTE GAS EMPLOYING BIO-TREATMENT TECHNOLOGY
(2008-09-18)
Tseng, Ching-Ping
;
Chung, Ying-Chien
A waste gas treatment process using biological treatment technology including filtering waste gas to be treated, and introducing the filtered waste gas into a biological treatment system periodically and switchably from two ends of the system.
Low-density alloy and fabrication method thereof
(2008-09-18)
Liu, Tzeng-Feng
;
Lee, Jian-Wei
A low-density alloy and the fabrication method thereof are disclosed. The alloy comprises, in weight percent, equal to or greater than 15 wt. % but lower than or equal to 22.5 wt. % manganese, equal to or greater than 7.2 wt. % but lower than or equal to 9.0 wt. % aluminum, equal to or greater than 5.1 wt. % but lower than or equal to 7.8 wt. % chromium, equal to or greater than 0.6 wt. % but lower than or equal to 1.2 wt. % carbon and the balance of iron. The golf-club head made from the abovementioned alloy can obtain superior elongation, strength, damping capacity, and corrosion resistance even without any hot/cold working process, such as forging, rolling, etc.; therefore, the fabrication cost thereof can be obviously reduced.