Browsing by Issue Date, starting with "2013-03-26"

Now showing 1 - 20 of 32114

Multiplexed bi-directional circulator
(2013-03-26)
Chang Rong-Yuan
;
Cheng Fu-Chiarng
In the present invention, a novel multi-port microwave circuit, also known as a multiple bi-directional circulator, is designed based upon the basis of the EBG characteristic of the meta-materials. Firstly, the concept of the traditional single-layered mushroom structure is extended with the suspending microstrip line to the multi-layered structure. In this way, the multi-layered structure can reveal multi-band EBG characteristic and achieve miniaturization. Moreover, we use three sets of proposed dual-band EBG circuit to be series-connected in a ring-type structure. By using proper impedance matching, the design of the multiple bi-directional circulator is accomplished. It combines the capabilities of the diplexer, the duplexer and the circulator. The triplex bi-directional circulator can integrate three kinds of communication systems with each other, which operates at frequencies comprising GSM 1800 MHz, WiFi 2.45 GHz, and WiMAX 3.5 GHz, respectively. It is suitable for the information integration of multi-band and multi-system communication applications.
Red and green fluorosulfide phosphor, preparation method and white-light emitting diodes
(2013-03-26)
Chen Teng-Ming
;
Wu Yun-Chen
Novel red and green fluorosulfide phosphors have a chemical formula of (A1-x-yCexBy)SF, wherein A and B are both trivalent metal ions, 0
Dry electrode for biomedical signal measuring sensor
(2013-03-26)
Lin Chin-Teng
;
Liao Lun-De
A dry electrode for biomedical signal measuring sensor includes a conductive sponge, a conductive fabric, and a thin metal film. The conductive fabric covers the whole conductive sponge, and the thin metal film is disposed on one face of the conductive fabric opposite to the conductive sponge. When using the dry electrode in measuring biomedical signal, it is not necessary to apply a conductive gel on a patient's skin, at where the biomedical signal is to be measured. Without the need of applying the conductive gel, the dry electrode is readily for measuring biomedical signal at any time and can be conveniently used in measuring signal over a long period of time without the problem of an attenuated signal due to gradually becoming dried conductive gel.
Specimen box for electron microscope
(2013-03-26)
Chen Chih
;
Tu King-Ning
The present invention relates to a specimen box for an electron microscope, comprising a first substrate, a second substrate, one or more photoelectric elements, and a metal adhesion layer. The first substrate has a first surface, a second surface, a first concave, and one or more first through holes, wherein the first through holes penetrate through the first substrate. The second substrate has a third surface, a forth surface, and a second concave. The photoelectric element is disposed between the first substrate and the second substrate. In addition, the metal adhesion layer is disposed between the first substrate and the second substrate to form a space for a specimen contained therein. Besides, the present specimen box further comprises one or more plugs. When the plugs are assembled into the first through holes to seal the specimen box, the in-situ observation can be accomplished by using the electron microscope.
A salt-assisted approach for the pore-size-tailoring of the ionic-liquid-templated TiO2 photocatalysts exhibiting high activity
(2013-03-27)
Chang, Sue-min
;
Lee, Chung-yu
;
環境工程研究所
;
Institute of Environmental Engineering
In this study, we develop a novel salt-assisted approach to adjusting the pore size of ionic-liquid-templated TiO2 photocatalysts by simply changing the concentrations and types of the inorganic salts. Four types of salts, including NaCl, CaCl2, NH4Cl, and NH4NO3, are selected in order to investigate the effects of the ionic radii and the charges of the constituent ions on the resulting textures. In addition, a mechanism that the salts assist the self-assembly of hydrophilic 1-butyl-3-methylimidazolium chloride (C(4)mimCl) molecules in hydrophobic benzyl alcohol is proposed. The templated TiO2 powder, which incorporates phosphate species to enhance its structural stability, exhibits a small pore size of 4.2 nm and a high surface area of 164 m(2) g(-1). Small amounts of the salts increase the ionic strength, slightly shrinking the template and the pore size, and pore expansion results when the salt/Ti ratio is above 0.2. The salts at a salt/Ti ratio of 1.0 remarkably extend the pore size to 8.7-16.8 nm in the order of NH4NO3 (16.8 nm)>NH4Cl (13.7 nm)>CaCl2 (12.4 nm)>NaCl (8.7 nm). Moreover, high surface areas of 154-199 m(2) g(-1) are still achieved. The ions that have large radii and high valence numbers are more capable of expanding the pores because of strong volume exclusion and Coulomb repulsion. The critical pore size for the adsorption of hydrated bisphenol A molecules within the pores is ca. 4.2 nm. Pore expansion facilitates mass diffusion in the channels and turns internal surface areas available for reactions, thus greatly enhancing the activity of the mesoporous photocatalyst by 2.7-5.5 times. (C) 2012 Elsevier B.V. All rights reserved.
Defects in semipolar (11(2)over-bar(2)over-bar) ZnO grown on (112) LaAlO3/(La, Sr) (Al, Ta)O-3 substrate by pulsed laser deposition
(2013-03-27)
Tian, Jr-Sheng
;
Wu, Yue-Han
;
Peng, Chun-Yen
;
Chiu, Kun-An
;
Shih, Yi-Sen
The microstructure of semipolar (11 (2) over bar(2) over bar) ZnO deposited on (112) LaAlO3/(La, Sr) (Al, Ta)O-3 was investigated by transmission electron microscopy. The ZnO shows an in-plane epitaxial relationship of [11 (2) over bar3](ZnO) parallel to [11 (1) over bar](LAO/LSAT) with oxygen-face sense polarity. The misfit strain along [11 (2) over bar3](ZnO) and [1 (1) over bar 00](ZnO) is relieved through the formation of misfit dislocations with the Burgers vectors b = 1/6[11 (2) over bar3](ZnO) and b = 1/3 < 1 (2) over bar 10 >(ZnO), respectively. The line defects in the semipolar ZnO are predominantly perfect dislocations, and the dislocation density decreases with increasing ZnO thickness as a result of dislocation reactions. Planar defects were observed to lie in the M-plane and extend along < 0001 >, whereas basal stacking faults were rarely found.
静电放电防护装置及静电放电防护电路
(2013-03-27)
柯明道
;
许哲纶
;
陈稳义
;
周业宁
;
黄晔仁
本发明公开了一种静电放电防护装置及电路，包括衬底、第一井区、第二井区、第一、第二、第三及第四扩散区、本体、第一及第二栅极。衬底具有第一导电型。第一及第二井区具有第二导电型，并形成于衬底之中。第一扩散区具有第三导电型，并形成于第一井区之中。本体具有第一导电型，并形成于衬底、第一及第二井区之中。第二扩散区具有第三导电型，并形成于本体之中。第一栅极控制第一扩散区与本体的电连接。第三扩散区具有第四导电型，并形成于本体之中。第四扩散区具有第四导电型，并形成于第二井区之中。第二栅极控制第三与第四扩散区的电连接。本发明实施例的静电放电防护装置及电路，能够防止闩锁现象的发生，避免破坏集成电路。
A gradient reproducing kernel collocation method for boundary value problems
(2013-03-30)
Chi, Sheng-Wei
;
Chen, Jiun-Shyan
;
Hu, Hsin-Yun
;
Yang, Judy P.
;
土木工程學系
The earlier work in the development of direct strong form collocation methods, such as the reproducing kernel collocation method (RKCM), addressed the domain integration issue in the Galerkin type meshfree method, such as the reproducing kernel particle method, but with increased computational complexity because of taking higher order derivatives of the approximation functions and the need for using a large number of collocation points for optimal convergence. In this work, we intend to address the computational complexity in RKCM while achieving optimal convergence by introducing a gradient reproduction kernel approximation. The proposed gradient RKCM reduces the order of differentiation to the first order for solving second-order PDEs with strong form collocation. We also show that, different from the typical strong form collocation method where a significantly large number of collocation points than the number of source points is needed for optimal convergence, the same number of collocation points and source points can be used in gradient RKCM. We also show that the same order of convergence rates in the primary unknown and its first-order derivative is achieved, owing to the imposition of gradient reproducing conditions. The numerical examples are given to verify the analytical prediction. Copyright (c) 2012 John Wiley & Sons, Ltd.
台灣現存古蹟知多少
(2013-03-31)
陳儀澧
;
Department of Communication and Technology
;
傳播與科技學系
為充實國民精神生活，發揚多元文化，中華民國於西元1982年制定《文化資產保存法》根據該法，具有價值之事物可經指定或登錄為文化資產。於受認定之文化資產中，古蹟保存類有767處佔文化資產總量第三大宗。
十字架與新月刀
(2013-03-31)
楊敦元
;
Department of Communication and Technology
;
傳播與科技學系
從中世紀的耶路撒冷一直到近代的911事件，以及印度與巴基斯坦之間的紛爭，因宗教而起的衝突，從來就沒少過也不曾平息過。
中西婚禮大不同
(2013-03-31)
張芮瑜
;
Department of Communication and Technology
;
傳播與科技學系
許多外籍配偶進駐台灣，豐富了台灣的多元文化，但是首先面臨的結婚大事，東方和西方卻有很大的差異，中式婚流程繁複、有許多細節和忌諱；西方婚禮講求簡單、浪漫，各有不同的優缺點。
創投輔導金　電影雪中之炭
(2013-03-31)
吳晉宇
;
Department of Communication and Technology
;
傳播與科技學系
拍電影，需要耗費相當多的人力物力，其中最實際的還是在於金錢的資源。創投與輔導金，是台灣電影創作者覓得資金的兩大管道。
台灣文創力　工藝成長快
(2013-03-31)
李佩玹
;
Department of Communication and Technology
;
傳播與科技學系
文創事業已於世界各國蓬勃發展數十年。而台灣近十年來，也加入發展文創的行列。2010年台灣文創產業中，平均每家廠商營業額以廣播電視最高，成長率最快的產業則為工藝類，以台灣基礎製造業為本，有向上發展的潛力。
古蹟老街分布
(2013-03-31)
歐士豪
;
Department of Communication and Technology
;
傳播與科技學系
一般大眾認為古蹟最多的縣市應是臺南，但已公布的古蹟數量分部顯示臺北市多於臺南市。老街的數量也以北部較多。
台灣節慶多　政府媒體牽成
(2013-03-31)
黃莉
;
Department of Communication and Technology
;
傳播與科技學系
現代節慶增多的現象，與政府假日增多的政策有相當大的關係。2001年全面周休二日加上彈性放假的實施，使民眾有更多空閒時間從事觀光活動，節慶活動因應大量多出的觀光人潮，如雨後春筍般出現在全台各地。
以健康為漣漪中心的設計
(2013-03-31)
蘇品勻
;
Department of Communication and Technology
;
傳播與科技學系
當健康碰上美食，是福還是禍？隨著現代人文明病越來越嚴重，「養身」似乎成為一種全民運動，任何產品只要冠上「健康」、「養生」，似乎就是熱銷的不二法門。然而，養生就是健康嗎？吃甜點就是罪惡嗎？
社區發展　縣市大比拼
(2013-03-31)
賴巧純
;
Department of Communication and Technology
;
傳播與科技學系
一般來說，社區發展協會數應與當地居住人口數成正比，但是在台灣卻因為各地經濟發展程度不同而呈現出不一樣的變化。
司法資源　公與私的差距
(2013-03-31)
林伯勳
;
Department of Communication and Technology
;
傳播與科技學系
本圖呈現一位法律從業人員，平均要面對的人民數，從中可明顯看出台灣「公」的司法資源相當不足。
每天背著吉他的那段日子
(2013-03-31)
王泓文
;
Department of Communication and Technology
;
傳播與科技學系
戴上耳機，按下播放鍵，聽著音樂裡的吉他聲，心頭總會響起一段旋律，那是一段充滿著音樂與夢想的日子，那時的我們只有一個目標，要完成我們的第一次，也是我們的最後一次成果發表。
齊步走　活出好天天
(2013-03-31)
戴裕蒨
;
Department of Communication and Technology
;
傳播與科技學系
3月30日心路基金會在台北動物園、桃園慈湖、新竹十八尖山，以及高雄蓮池潭同步舉辦了「好天天　齊步走」的健走活動。基金會執行長宗景宜希望透過活動傳達心路的精神，也讓特殊孩童的家長藉此帶著孩子們出外走走。