인산형 연료전지에 관한 연구 : 다공성전극의 전기화학적 산소환원 Electrochemical Reduction of Oxygen on Porous Electrode

이주성,박정일,유덕영 한국화학공학회 1990 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.28 No.4

인산형 연료전지용 다공성전극에 대한 전기화학적인 산소환원 특성을 고찰하였다. 테프론 양은 카본블랙 무게비로 환산하여 기체확산층은 40%, 촉매층에서는 30%인 때가 적당하였다. 기체확산층에 사용된 발포제인 탄산수소암모늄의 양은 카본블랙 무게비에 대하여 600%일 때가 좋았으며 이 때 다공율 60-65% 평균구경 20-3O㎛이었다. 촉매충의 카본블랙에 함침시킨 백금촉매의 최적량은 전극단위 면적당 0.5㎎이었다. 이 조건에서 만든 전극의 산소환원 전류밀도는 0.7V(vs. NHE)에서 20㎃/㎠를 나타냈다. The electrochemical characteristics of oxygen reduction of a porous electrode for phosphoric acid fuel cell have been studied. The best result for the manufacturing of fuel cell electrode was obtained when the amounts of PTFE contained in the catalytic layer and in the gas diffusion layer were 30% and 40%, respectively. The gas diffusion layer had the porosity of 60-65% and mean pore-diameter of 20-30㎛ when the foaming agent(ammonium bicarbonate) to the carbon black was 600wt%. The optimum amount of platinum catalyst impregnated in carbon black was 0.5㎎/㎠. At these conditions, cathode current density was 240㎃/㎠ at 0.7V(vs. NHE).

선상가열법에 의한 강판의 곡가공 실험 연구

이주성 울산대학교 2001 공학연구논문집 Vol.32 No.2

선체 외판을 구성하는 곡면의 가공은 선박생산에서 대단히 중요한 위치를 차지하고 있는 공정 중 하나이다. 선수미부에서 볼 수 있는 두 축 방향으로 곡률이 있는 곡면의 경우 현재 선상가열법이나 삼각가열법에 의한 열가공법을 적용하여 가공하고 있다. 본 논문에서는 선상가열법에 의한 곡가공에 대한 실험을 수행하고 분석한 결과를 다루었다. 여기에서는 횡방향 뿐만 아니라 종 방향으로도 곡률을 갖고 있는 곡면 형상의 가공에 사용되는 삼각가열을 구현하기 위해 선상가열법을 변형하여 그 효과를 나타낼 수 있는 실험을 수행하였다. 다수의 실험모델에 대한 실험결과를 가공의 효과 측면에서 분석한 결과 현장에서의 삼각가열의 효과를 변형된 선상가열법을 적용해서 구현할 수 있음을 알 수 있었고 또한 안형곡면의 가공에 효과적으로 적용될 수 있음을 알 수 있었다. Plate forming is well known process as one of the most important in ship buildings. For the curved plate in bow and stern part which has curvatures in two directions is formed by applying heating method such as line and triangular heating methods. This paper is concerned with the experimental study of plate forming by line heating. In this study the traditional line heating method is modified to simulate the triangular heating effect for the pillow shape curved surface which has longitudinal curvatures as well as transverse curvature. This modified line heating method has been applied to several plate models and the results are analysed from view point of efficiency of plate forming. From the present study it has been found that the effect of triangular heating can be simulated by applying the modified line heating method and it can be effectively applied to forming of pillow shape curved surface.

目的適合性과 信賴性의 트레이드오프에 관한 硏究

李柱成 동국대학교 회계연구소 1992 會計學論叢 Vol.- No.1

초기결함을 갖는 平板의 壓縮最終强度 解析에 관한 연구

李柱成 울산대학교 1986 연구논문집 Vol.17 No.1

甲板을 구성하는 板部材는 船舶의 縱强度에 중요한 역할을 하므로, 最適設計를 위해서는 이들 板部材의 壓縮最終强度를 결정해야 한다. 本 論文에서는 準解析的 方法을 이용하여 실제 판의 彈塑性 大變形 거동을 살펴서 그에 등가되는 판의 해석결과로부터 壓縮最終强度를 추정할 수 있는 公式을 제안하였다. Since plate members of deck play an important role in longitudinal strength of ship, it is necessary to determine their compressive ultimate strength for optimal design. In this paper, using the semi-analytical method, elasto-plastic large deformation behavior of real plates and those of equivalent plates to them are considered and from those results, design formula for prediction of ultimate strength is suggested.

壓縮平板의 最終强度 解析

李柱成 울산대학교 1984 연구논문집 Vol.15 No.2

船舶 등 해양 구조물은 주로 平板部材로 구성되어 있고, 이들은 引長과 壓縮荷重을 반복해서 받게된다. 선체구조물의 부재로써 평판은 薄板이기 때문에 압축하중에 의해 파괴되기 쉽다. 따라서 設計를 위하여 壓縮最終荷重의 결정이 요구된다. 本 論文에서는 Ritz法을 應用한 새로운 解析的인 方法을 利用하여 평판의 압축최종하중을 결정하였다. 本 方法을 이용하여 有限要素法 등의 數値解析法에 의한 것 보다 더 效果的으로 좋은 결과를 얻었다. Offshore structures such as ship's structure are mainly composed of the plate members and the plates are subjected to the tensile and compressive load. Since the plates as the member of ship's structure are the thin plate, they are likely to be collapsed under the compressive load. Therefore the compressive ultimate load must be determined for design. In this paper, new analytical method applying the Ritz method is introduced to determine the ultimate compressive load of plates. Results of the present method are more accurate and the present method are more effective and economic than the numerical method such as the finite element method.

리스트의 精神的 生産力說

李柱晟 청주대학교 경제학회 1993 經濟學論究 Vol.16 No.-

決定一國國民生産力的主要因素, 除今日我情所稱的資本, 亦卽過去由騷力及 腦力勞動累積而成的物質資本外, 他如天然資源 市民的社會政治條件與制度等的物質 糖神諸層面, 亦不容忽視. 因此, 國民生産力論槪念, 涵叢整個社會學領城, 不能專賴狹隘的經濟分析. 李斯特的思想頗具社會晳學內涵, 這是他的可貴處. 一切生産的關眞在於人, 具有智能的人是最積極的生産因素, 人決定生産那種財貿, 人的意志較生産活動本身更爲重要, 生産計刻 生産過程以及生産成果, 莫不受其影響. 一個細心照顧締人的護士, 能使病人提早出院. 無形的生産力, 常被一般人所忽略, 李斯特却將遼類非物質因素納入生産力範圍之內, 建構了他獨樹一格的理論. 時今日, 我們仍以可以計量的寧項爲分析對象, 經濟學方法論依舊殘缺不整, 站在一個世紀前誕生論遼位先知先覺面前, 我洞臟讀作一深刻論反省. 投入生産的有形因素圖然重要, 環朧着生産的社會 制度 政治環境, 以豫社會大索的情緖, 也是重要的環飾, 生産麗是兩者交互下産生論結果. 以勞動經濟爲例, 勞資衝突徵烈的社會, 不可能生産出良質的産品. 法律唯有在符合社會需求的狀況下, 才能發揮 的功能, 才有 存在的理由. 在社會科學領域裡, 竝非所有存在的事物都是理性的. 簡言之, 亞當 史密斯(Adam Smith) 視交換價値的總和爲國富, 而李斯特則超趨有形的物賢層次, 將法律 科技 信仰 政治制度及公共道德等環朧著生産的總體環境, 亦卽可供動員的所有因素, 統統納入生産力範圍肉. 作爲社會科學的分析方法, 他的理論竝無大錯, 但他的生産力學說, 未能得到進一步發展, 適也許是因爲作爲經濟理論, 他的主張不適於邏輯推演. 雖然如此, 我們却不能低古他對後世的影響, 如北美的制度學派與拉T美洲的發展論者, 在一定程度上都受到他的影響, 李斯特的保護貿易主義, 本是弱者的生存原理, 如今反成爲强者的支配原理, 實在是一大識刺. 李斯特的生産力學說, 重視價値的所有量, 但更重視生産該項價値的潛力的所有量, 適種硏究途徑, 廳予高度評價. 他的理論雖未得到繼續發展, 但其方法論上的歷史意識與思想上的國民主義精神, 足塔在經濟思想史中占一席之地. 更且, 保護貿易主義蘿構在他的方法與思想上, 是在他的理論基礎上開花結果的, 而各國爲發展國民經濟所採取的一系列措施(卽經濟政策) , 亦無不遵循著李斯特的遣項假說. 思想竝不因發展霧理論才受肯定, 露於向舊有的時代精神挑戰, 思想才具價値. 同時, 一個思想及其季育出來的理論雖被巖倒 否定, 但他對精神 史上的貢獻竝不因此而適睡棄. 沒有不變遷的寧物, 也沒有不變遼的理論. 不遭否定的理論不是理論. 李斯特生於1789年, 出身皮匠家庭, 卒於1846年, 享年五十有七. 今年正是他誕辰200周年, 謹擺此文, 聊資紀念這位在晨間散步途中嗚槍自殺的民族主義者. 總之, 相對於亞當 史密斯論萬民主義經濟學, 李斯特領關溪徑, 以國民主義精神爲出發點, 設計了一裏保護貿易政策之假說, 採歷史意識硏究法來驗證此項假說, 進而提出國民精神生産力理論, 開創了國民經濟學之先河. 時代變則世界變, 世界變則意識變. Um die wirtschaftlichen Ideen als ein Disziplin der Geschichte der Geistes richtig verstehen zu wollen, ist es zuerst notwendig, daß man das damals vorhandene Fragebewußtsein, dessen Produkt die Ideen sind, begreift. Darum muß man die Wirklichkeit des damaligen menschlichen Lebens gut beobachtet haben. Daß die Wahrheit ohne Zeit und Raum existiert, hat uns noch keine menschliche Geschichte gelehrt. Eigene Bewegung der Dinge bzw. des menschlichen Denkens ist ihre Daseinsweise. In Deutschland bzw. in anderen kontinentalen Staaten, die noch der mittelalterlichen Handarbeit oder der eigenwirtschaftlichen Produktionsweise nicht entkommen waren, hatte sich die Einheit der Arbeit getrennt und die Produktivkraft der Afbeit blieb auf einem niedrigen Niveau. Dieser Unterschied zwischen den beiden Entwicklungsniveaus der Produktivkraft gab England eine Machtstellung gegenu¨ber den Kontinent. In Deutschland, in dem die industrielle Revolution in der ersten Ha¨lfte des neunzehnten Jahrhunderts begann, erschienen die zwei sozialen Grundgedanken, die die existierende Praxis und das daraus widerspiegelnde Bewußtsein negiert haben wollten, allma¨hlich. Da war einerseits die Sozialistenbewegung, die den inneren Widerspruch des industriellen Kapitalismus, der fu¨r die materielle Zivilisationsformung eine bedeutende Rolle gespielt hat, zeigte und den Privatbesitz von Produktionsmitteln negieren wollte, und andersrseits die Ideenrichtung der nachkommenden historischen Schule, die vom Standpunkt des Nachlaufens gegenu¨ber den industriellen Nationen ein historisches Bewußtsein in der o¨konomischen Theorienbildung darzustellen betonte. In der Umbruchzeit, in der sich die Sozialphilosophie vom Fu¨rstenwillen zum Willen des Volkes, vom status zum contract vera¨nderte, stellte als ein Wegbahner der historischen Schule Friedrich List seine o¨konomischen Grundideen, der die auf dem geschichtlichen Bewußtsein und auf dem nationalistischen Geist basierende Theorie der nationalen Produktivkraft, besonders der geistigen Kraft einer Natiot betonte, gegen das Prinzip des Tauschwerts dEr herrschenden Schule von Adam Smith. Mit der geistigen Unterstu¨tzung der kosmopolitischen Wirtschaftsanschauung hat England als eine Fabrik der Welt der Konkurrenz ohne Rivalen jeweils wegen dem hohen Niveau ihrer Produktivkraft in allen Gu¨terma¨rkten gewonnen. Vo solchem geschichtlichen Hintergrund behauptet List die Nationalo¨konomie als eine Wesensexpression der politischen O¨konomie, wenn er mit der Konfo¨deration materieller und geistiger Produktivkra¨fte einer Nation die Theorienbildung von Smith als eine wurzellose, nationlose Lehre kritisiert. Er zeigte den Ideenfehler Smiths, als er dazu sagte, daß die Geschichte auf Vermittlung zwischen den beiderseitigen Forderungen der Politik und der Philosophie weist. Er war fu¨r die Richtung eines Schutzzollsystems, um die Infantindustrien großzuziehen: damit konnte sich die materielle Produktivkrat einer Nation vermehren, und daher kamen die Steigerung der Interessen und des Glu¨cks einer Nation. Im heutigen Sinne ist solche Behauptung eine dynamische auswa¨rtige Arbeitsteilungstheorie fu¨r die ru¨cksta¨ndigen La¨nder. Natu¨rlich gibt es kein Prinzip der Handelsfreiheit im Sinne von Smith bzw. kein des Schutzzollsystems im Sinne von List im Außenhandel. Die beiden sind je nach ihrem Wesen gea¨ndert. Trotzdem ist die wesentliche Richtung der Wirtschaftsentwicklungstheorie nicht weit von dem Gedanken Lists entfernt. Man kann den Umfang seines Gedankens nicht leicht in Zahlen ausdru¨cken. Kurz gesagt, beurteilte List das Werk von Smith 'the weaith of nations' das die des Tauschwerts beinhaltet, als eine kosmopolitische O¨konomie und definierte in seinem Werk `das nationale System der politischen O¨konomie', in dem die Theorie der materiell und geistig ausgereiften Nationalproduktivkraft entfaltet wurde, wahre politische O¨konomie als Nationalo¨konomie. Damit konnte er das Fragebewußtsein grundsa¨tzlich vor der Untersuchung des Wohlstandwesens aller Nationen zu dem einer Nation vera¨ndern. Das ist eine geistige Revolution, die historisch notwendig war. Die beiden, Smith und List, negierten die in ihrer Zeit herrschenden Ideen, unterstu¨tzten die Interessen ihres Vaterlands und halfen der industriellen Kapitalistenklasse ihres Landes gleicherweise. Wegen des Unterschieds der Zeit und des Raums, in denen sie gelebt haben, liefen die beiden Rachtungen in Bezug auf den Beginn der Theorienbildungen, deren Entfaltung und die politischen Schlußfolgerungen gegeneinander. Adam Smiths allgemeine Deduktion, seine Lehre des Tauschwerts und die Behauptung der Handelsfreiheit geben der laissez faire des auswa¨rtigen Freihandels einen Eckpfeiler, wa¨hrend dagegen nach Friedrich List die historisch-empirische Induktion, seine Lehre der nationalen Produktivkraft und die Behauptung des auswa¨rtigen Schutzhandels die bewußte Politik des Schutzzollsystems untermauern, damit die ru¨cksta¨ndigen Industrien seiner Nation gedeihen ko¨nnen.

SERVPERF모형에 의한 세무대리인의 서비스품질에 관한 연구

이주성 한국교통대학교 2016 한국교통대학교 논문집 Vol.51 No.-

The purpose of this study is to analyze the influences of the service quality on user’s satisfaction and continuing business intent in tax agency service. SERVPERF model used to measure service quality. The questionnaire survey was conducted in ‘C’-city from August 4 to August 30, 2014. 93 questionnaires were applied to a statistical analysis using IBM SPSS. The results are as follows. First, it was found that the tangible quality, reliability quality and assurance quality has a positive impact on user’s satisfaction. Second, it was found that user’s satisfaction had a positive impact on continuing business intent. The findings of this research are mostly useful to tax agent who intended to better serve its customers.

지방자치단체 복식부기회계정보시스템의 성과평가에 관한 연구

이주성 忠州大學校 2008 한국교통대학교 논문집 Vol.43 No.-

Local government double-entry bookkeeping․accrual accounting system is effected to all over the country from 2007 according to revision of locality finance Act. Information system progressed altogether with trial operation of double-entry bookkeeping․accrual accounting system has to operate adequately. The purpose of this study is to develops the performance assessment model for the efficient constructing guidelines of information system and to suggest the research direction for the performance assessment of the double-entry bookkeeping accounting information system in the local government. For this purpose, I examined the current development and cases of local government double-entry bookkeeping accounting information system(DAIS) and reviewed relative prior researches. As a result, the proposed model consists of three basic dimensions; systems quality, information quality, service quality. Also, perceived usefulness and user satisfaction are adopted as the additional dimension in this model. Ultimately, perceived usefulness and user satisfaction both are relate to perceived work efficiency. I hope that this study will be based in further DAIS study.

인공 신경망을 이용한 오프라인 한글인식에 관한 연구

이주성,정양권,양원일 조선대학교 동력자원연구소 1992 動力資源硏究所誌 Vol.14 No.2

Visual recognition of printed and hand-written characters is introduced in context of the neural network paradigm and the results of applying specific neural network architectures are analyzed. Computer classification of character recognition is classified into preprocessing, recognition and techniques which are briefly reviewed in terms of suitability for implementation as a neural network solution for printed and hand-writen character recognition. In preprecessing, a single layer perceptron which has 25 processing elements is used for thinning and noise elimination. An ART (Adaptive Resonance Theory) model is used in recognition. The proposed ART model consists of 1024 PEs in the F1 layer, and 64 PEs in the F2 layer. Recognition results are 82% in character recognition which is independent of writing style.

막스 베버(Max Weber) 方法論 考

李柱晟 단국대학교 산업연구소 1983 산업연구 Vol.5 No.-