New Method of Solving the Proper Rational Function and Application to Electrical Control System

Chen Chung-Cheng,Chen Yen-Ting 대한전기학회 2022 Journal of Electrical Engineering & Technology Vol.17 No.4

The paper is dedicated to develop a new method of addressing the linear nonhomogeneous time-invariant diff erential equation with same diff erential numbers for inputs and outputs. The Laplace transformed output of the electrical state-space equation is a rational function with the same degrees of the numerator and the denominator, and then the bored processes involving the long division of both complicated polynomials, the expanded multiplication of all polynomial factors, the diff erentiation of complicated polynomials and the complex derivations of all partial fraction parameters are inevitable for existing traditional methods. However, by applying the proposed method in this paper, we can explicitly express the general form of the desired output solution and directly solve the desired problem with shorter time than those traditional approaches. To give the signifi cant applications of the new proposed method, we apply it to address the famous electrical circuit based on our recent researches of Chen’s electrical unifying approach.

Principles of value creation in event tourism: Enhancing the competitiveness of regional clusters Chung-Shing Lee a , Drew Martin b , Pi-Feng Hsieh

Chung-Shing Lee,Drew Martin,Pi-Feng Hsieh,Wan-Chen Yu 한국마케팅과학회 2020 마케팅과학연구 Vol.30 No.4

Using a strategic management perspective, this paper conceptualizes how event tourism creates and appropriates value for locations and regions supporting tourism. A conceptual framework of the six principles of tourism value creation integrates theoretical developments in value creation and retention, service innovation, and networks and regional clusters. This model applies to three levels of players: individual entities, tourism-supporting organizations, and the geographic or regional clusters that promote tourism. This framework demonstrates how event tourism creates value for individual tourists, tourism-related organizations, and regional economies, while also enhancing competitiveness for regions and individual nations. The model offers a new perspective for future research directions and practitioner guidance to create and sustain competitive advantage.

1923年 共産國際對華奇生政策之形成

陳聰勝 단국대학교부설 중국연구소 1980 中國硏究 Vol.2 No.-

「콤민태른」이 中國에서의 寄生政策을 전개한 것은, 「콤미태른」의 당시 戰略一般論議로 보아야 할 것이다. 즉, 「콤민태른」의 제3차 집행위원회의 결의에 근거한 「大衆에로」(To the Mass)의 구호가 그 함축된 意義를 잘 나타내어 준다고 할 수 있다. 거기에서 파생된 戰略的 표현이 이른바 「東方迂廻論」이라고 하겠다. 이는 Lenin에 의해 주장된 사실이지만, 보다 구체적인 戰略은 Stalin에 의해 수립된 것으로 볼 수 있다. 따라서 이와 같은 戰略의 수립과정을 보면, 「콤민태른」의 中國政策은 그 성립 초기부터라고 하겠다. 이는 1918년에 발표된 Stalin의 「Don't forget East」란 論文에서 그 근거를 찾을 수 있다. 즉, 그는 同論文을 통하여 「단 1분동안이라도 東方을 잊을 수 없다. 왜냐하면, 東方은 世界帝國主義가 完全히 占領할 수 없는 後備力量으로 가장 믿을만한 後方이기 때문이다」고 하였다. 이는 곧, 「콤민태른」의 「東方에 대한 관심」으로 평가되어 온 사실이다. 특히 이것은 西勢의 東漸化 현상과 日本帝國主義의 「東洋化」政策에 대한 별개의 문제로 볼 수 있다는 데에 留意해야 될 것이다. 물론, 당시 中國은 西勢의 거센 침략적 파도에 핥키운 상처도 컸거니와 日本의 帝國主義政策이 겨냥하는 크다란 표적에서 벗어나지 못하고 있었던 것은 사실이다. 그러나 이러한 현상은 「콤민태른」의 世界戰略에 종속되는 객관적 상황으로 意味될 뿐이며, 반드시 그 같은 상황에 초점이 맞추어져야 할 戰略的 필연성을 말할 수는 없다. 다만 그러한 條件이 객관적으로 성립됨으로써 「콤민태른」의 戰略的 우선순위를 결정함에 미친 바 영향은 적지 않다고 보겠다. 말하자면, 당시 「콤민태른」은 「유럽」을 공격하기에는 때 이른 것으로 보았다. 그래서 戰略의 우선목표를 東方에 두었고, 그 중에서도 中樞的 존재인 中國에 두게 된 것이다. 여기에 그들이 제시할 수 있는 戰略의 조건이 民族主義였던 것으로 나타났다. 그들의 궁극적 목표는 民族의 분열과 民族主義의 여 부정이지만, 현실적 요구에 부응하기 위하여 그들의 民族主義를 부정하지 않으려고 했다. 특히 이러한 民族主義에 대한 戰略的 變容은 곧 第一次國共合作(Kuo-ming-Connunist Collaboration)으로 구체화 된 셈이다. 그래서 그들은 이를 통하여 표면상 民族主義의 자각을 일깨웠고, 나아가 中國에 대한 「中華」的 歸屬意識을 고무할 수 있었다. 그리하여 그들은 抵抗民族運動을 反政府運動으로 正當化시키려고 한 것이다. 中共의 初期 革命過程이 그러한 형태의 典型으로 이른바 「人民民主主義革命」이 된 것은, 이런 뜻에서 우연한 것이 못된다고 하겠다. 물론 당시 孫文의 입장으로는 反中華的 異質 理念과의 갈등을 극복하고, 통일된 「中華」로서의 國民黨政府가 될 수 있다고 믿었다. 또한 그를 추진할 수 있는 理念이 「三民主義」라고 했다. 그러나 「볼쉐비끼」革命을 起點으로 한 Marxism의 물결은 이른바 新思潮로 표현된 激浪을 일으킴으로써 결국 反革命이 反民族으로 통할 수 있게 되었다. 여기에서 「콤민태른」의 一國社會主義論은 Marx의 國際主義的 보편성을 띠고 正當視 될 수 있었다. 그러므로 「콤민태른」의 寄生政策은 엄격히 소련의 國家戰略에 종속되고 있다. 이는 Louis Fischer의 「The Soviet in World affairs에서도 밝혀지고 있거니와, David J. Dallin의 「蘇俄俄侵略遠東史」에서 한층 명백히 드러나고 있다. 즉, 「계급간의 共同利益이란 그 자체가 모스크바의 利益인 것이다」라는 그의 주장은 근거있는 말이다. 그래서 中共黨은 「콤민태른」의 한 支部로 만족하여 中國內의 온갖 民族利益을 헤치면서 「모스크바」의 指示에 충실할 수 밖에 없었다. 따라서 소련은 이를 보장 받기 위하여 많은 콤민태른」의 代表들을 번갈아 中國에 파견하여 國民黨政府를 현혹시키는 것으로 일관한 사실이었다.

Contagions and Ways of Seeing

Chung-jen Chen(Chung-jen Chen) 19세기영어권문학회 2011 19세기 영어권 문학 Vol.15 No.2

It is generally agreed that the great discovery of bacteria and a series of related breakthroughs around the mid nineteenth century onward forced a transformation in medical discourse. Doctors and medical scientists decisively transformed the nature of medical examination and human perception. Through microscopic lenses, human eyes saw what was once invisible; through policy making, human hands explored the previously unreachable. In order to highlight uncleanness as a health threat, sources of contamination and transmission were presented in forms perceivable to the observer. This newly constructed narrative of contagion was transnational and transcontinental in its essence as the dominant figure in the formation of such medical breakthroughs came from Louis Pasteur, the French biologist and chemist. In light of Pasteur’s germ theory, this paper attempts to read slum narratives of Charles Booth and examine the formation of how a Pasteurian way of seeing the invisible contagions turned to a set of moralistic criteria in investigating potentially infectious individuals. Just as the visualization of bacterial invasion consolidates boundaries between health and disease, sanitation and filth, morality and immorality, country and the city, domestic and native, disease transmission was endowed with a penetrating moralist vision in which what is foreign and filthy are regarded as intimidating to the health and integrity of the race.

Neural correlates of the popular music phenomenon: evidence from functional MRI and PET imaging

Chen, Qiaozhen,Zhang, Ying,Hou, Haifeng,Du, Fenglei,Wu, Shuang,Chen, Lin,Shen, Yehua,Chao, Fangfang,Chung, June-key,Zhang, Hong,Tian, Mei Springer-Verlag 2017 European journal of nuclear medicine and molecular Vol.44 No.6

<P>Popular music Gangnam Style can arouse pleasure experience and strong emotional response. The left putamen is positively correlated with the mood arousal level score under the Gangnam Style condition. Our results revealed characteristic patterns of brain activity associated with Gangnam Style, and may also provide more general insights into the music-induced emotional processing.</P>

Chemical Stabilization Study for Sulfonylurea Herbicides

Chen, Chia-Chung 한국잡초학회 1997 Weed&Turfgrass Science Vol.17 No.2

Sulfonylureas are highly active herbicides which can be applied at very low rate(10-50g/ha) to control broadleaf weeds. The nature of this category of compound is, however, very unstable toward hydrolysis. Therefore, the preparation of these compounds as liquid formulation was not possible. Most of the current formulations of sulfonylurea are in dry forms such as water dispersible granule or wettable powder. Even in these dry forms, the active ingredients also encounter significant chemical decomposition. This study involves the preparation of the sulfonylurea salts by reacting the parent compound with base such as sodium hydroxide. The salt becomes stable toward hydrolysis and it turns soluble when diluted with water. This discovery makes the preparation for liquid formulation or soluble granule of sulfonylurea possible. The stoichiometry of base added to the neutral sulfonylurea is controlled quite precisely. The base has to be added enough to quench the acidic impurities in the technical material and to convert the active ingredient into salt. However, the base should not be overused to cause further saponification of the sulfonylurea salts. The chemical nature of these compounds is presented and the chemical reaction is described. New soluble liquid formulation and solid granule formulation of sulfonylurea are suggested.

An Empirical Study on the Correlation among Innovative Strategies, Motivation, Level of Implementing Innovative Activities and Business Performance in Taiwan's High-tech Manufacturers

Chung, Yi-Chan,Hsu, Yao-Wen,Chiu, Chung-Ching,Chen, Ching-Piao,Tsai, Chih-Hung The Korean Society for Quality Management 2008 The Asian Journal on Quality Vol.9 No.3

This study explores the influence of Taiwan's high-tech manufacturers' innovative strategy and innovation motivation concerning the implementation of innovative activities, as well as the influence of innovative activities implementation on business performance. The two intermediate variables, industry group and enterprise scale are also considered. Through a review of the relevant literature, a theoretical model of the influence relationship is developed, while an empirical analysis is simultaneously conducted on Taiwan's high-tech manufacturers. The research result shows that the internal driving force of innovative activities has a significant impact on the level of implementing technological innovative activities and cultural innovative activities. The external driving force of innovative activities has a significant impact on the level of implementing market innovative activities and management innovative activities. Companies adopting self-developed technology and purchased as well as self-developed technology strategies, perform better than those adopting purchased new technology or those with neither purchased nor self-developed technology strategies, at implementing technological innovative activities and cultural innovative activities. The level of implementing innovative activities has a significant influence on business performance (cost reduction and product/service differentiation). For the intermediate variables of "industry group" and "enterprise scale", it is proven in this study that they have no significant influence on the level of innovative activity implementation or business performance.

Effect of the Circle-Grid Electrodes on Concentrated GaAs Solar Cell Efficiency

Chen-Chen Chung,Binh Tinh Tran,Ming-Hung Han,Kung-Liang Lin,Hung-Wei Yu,Yen-Teng Ho,Chun-Yen Chang,Edward Yi Chang 대한금속·재료학회 2014 ELECTRONIC MATERIALS LETTERS Vol.10 No.5

In this study, we investigate the effect of the shading factor of the front grid pattern on concentrated solar cell efficiency, taking the trade-off between the series resistance of the electrodes and the amount of incident light into consideration. We examine the thermal effect with regard to five different circle-grid electrode patterns of the front contact. The front contacts with different grid patterns affect the characteristics of light-concentratedtype GaAs single-junction solar cells. The device parameters analyzed include the open-circuit voltage (Voc), short-circuit current (Isc), fill factor (FF) and conversion efficiency (η). The results of our study show that for a concentration ratio greater than 60x with AM1.5G, the device with a shading factor of 7.1% has the best cell efficiency of 27.05%, due to the smaller current crowding at the center spot. The results indicate that the conversion efficiency of solar cells can be improved by establishing a compromise between the shading effect and the series resistance effect.

BOOK REVIEW - Public service efficiency: reframing the debate

Chung-An Chen 한국행정학회 2014 International Review of Public Administration Vol.19 No.4

The Effect of CdS QDs Structure on the InGaP/GaAs/Ge Triple Junction Solar Cell Efficiency

Chen-Chen Chung,Binh Tinh Tran,Hau-Vei Han,Yen-Teng Ho,Hung-Wei Yu,Kung-Liang Lin,Hong-Quan Nguyen,Peichen Yu,Hao-Chung Kuo,Edward Yi Chang 대한금속·재료학회 2014 ELECTRONIC MATERIALS LETTERS Vol.10 No.2

This work describes optical and electrical characteristics of InGaP/GaAs/Ge triple-junction (T-J) solar cells with CdS quantum dots (QDs) fabricated by a novel chemical solution. With the anti-reflective feature at long wavelength and down-conversion at UV regime, the CdS quantum dot effectively enhance the overall power conversion efficiency more than that of a traditional GaAs-based device. Experimental results indicate that CdS quantum dot can enhance the short-circuit current by 0.33 mA/cm2, which is observed for the triple-junction solar cells with CdS QDs of about 3.5 nm in diameter. Moreover, the solar cell conversion efficiency is improved from 28.3% to 29.0% under one-sun AM 1.5 global illumination I-V measurement.