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이상엽(Lee, Sang-Yup),곽정훈(Kwak, Jung-Hun),윤기준(Yoon, Ki-June) 한국신재생에너지학회 2007 한국신재생에너지학회 학술대회논문집 Vol.2007 No.11
In order to characterize the catalytically active sites on carbon black, acetylene chemisorption had been examined recently at 773 and 873 K by using a pulse technique. As the inject ion was repeated at 773 K, the adsorbed amount gradually decreased and eventually the adsorption did not occur any more. At 873 K a constant amount of C₂H₂ was consumed repeatedly after several injections. Good linear relationships were obtained between the methane decomposition rate at 1123 or 1173 K and the cumulative acetylene adsorption at 773 K or the constant acetylene consumption at 873 K. Reasonable models for the associative acetylene chemisorption at 773 K and the constant acetylene consumption at 873 K on the armchair face at the edges of graphene layers were proposed. The constant consumpt ion may be explained by the C₂H₂-addition-hydrogen- abstract ion (CAHA) mechanism.
공정시스템 이동현상 화학공정안정 : 라텍스 콜로이드의 여과에 따른 멤브레인 전위의 변화 거동
이상엽(Sang Yup Lee),전명석(Myung Suk Chun),김재진(Jae Jin Kim) 한국화학공학회 2000 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.38 No.2
The streaming potential generated by the electrokinetic flow effect within electric double layer of charged channel is applied to determine the membrane potential by using the Helmholtz-Smoluchowski equation. It is known that the membrane potential depends on the particle concentration, solution ionic strength, and cake layer formed during the progress of filtration. The influence of physicochemical parameters upon the filtration has been examined with an in-situ and simultaneously monitoring of membrane potential as well as permeate flux. As the latex concentration increases, both permeate flux and membrane potential are decreased. Evidently, the growth of cake layer has been more developed with increasing latex concentration, and then both a lower permeate velocity and a higher solution conductivity lead to decrease the membrane potential. With increasing ionic concentration of KCl from 0.1 to 10 mM, the opposite behavior has been observed, where the permeate flux decreases but the membrane potential increases. Note that the increase of ionic concentration provides a denser cake layer due to the shrinkage of Debye length, and the increased membrane potential results from a corresponding zeta potential.
Examining Factors that Influence the Success of Online Games
Sang Yup Lee(이상엽) SBS 2019 미디어경제와 문화 Vol.17 No.1
이 연구는 온라인 비디오 게임의 성공 정도에 1) 편승효과(bandwagon effects), 2) 게임에 대한 구전 정보(즉, 평점과 리뷰), 3) 게임 정보의 노출 위치가 어떻게 영향을 미치는지를 살펴보았다. 이를 위해 온라인 게임 포탈 사이트인 Kongregate.com에서 새롭게 출시된 83개의 게임에 대한 3주간의 패널 데이터를 분석하였고, 분석 결과로 온라인 게임이 성공하는데 있어서 편승효과와 구전 정보의 긍 · 부정 정도, 그리고 게임 정보의 노출 위치가 중요한 역할을 하는 것으로 나타났다. Because many online games are offered to players through such platforms as online game portal sites or digital distribution services on mobile devices, it is important to understand what factors influence the success of online games on such platforms. The present study examined factors that influence the success of an online game published on a game portal site with a focus on bandwagon effects, WOM, and the location where information about the game is displayed. Using panel data on 83 online games from Kongregate.com, an online games portal, we found that bandwagon effects, the valence of WOM, and advertising location of a game played important roles for the success of online games.
이상엽(Sang-Yup Lee),노영희(Younghee Noh) 한국비교정부학회 2021 한국비교정부학보 Vol.25 No.4
(Purpose) It is necessary to provide a specialized and organic system that links humanities and social science-based convergence research into a true meaning of humanities and social science-based convergence research, and tailored support to focus on solving practical social problems, expanding the base of convergence, and linking the spread of results. (Design/methodology/approach) This study attempted to lay the groundwork for the convergence research policy by conducting a survey on convergence researchers, and the survey subjects received orders from the Korea Research Foundation from 2009 to the present to collect information on researchers who have experience in convergence research. The targets are co-researchers, professional researchers, and senior researchers. (Findings) in this study, we tried to propose a policy to realize this. Proposed policies include support for revitalization of local humanities and students, establishment and support of the Korean Federation of Humanities and Social Organizations, a system for discovering and supporting convergence research agenda and agenda research support, securing and supporting convergence talent and convergence researchers, construction and utilization of convergence content, and humanities. Technology convergence enterprise innovation and business model discovery and commercialization, Convergence Research Korea (CRK) project as a brand business, etc. (Research implications or Originality) The effects that can be obtained through the results of this study can be presented in three main ways. First, based on the policy proposed in this study, it is possible to present a direction for fostering future-adaptive convergence talents. Second, it will be possible to spread social problem-solving convergence research. Third, it will have the effect of proving and commercializing the value of humanities and convergence research.
이상엽(Lee Sang Yup) 한국정책분석평가학회 2004 政策分析評價學會報 Vol.14 No.3
An efficiency-oriented paradigm that had dominated in the twenty century has been gradually faded and a new paradigm emphasizing sustainability in agricultural and rural development including environmentally friendly agriculture becomes dominant. Learning program through city-rural interchange has been carried into effect from 1990s. The purpose of this study is to develop strategies for popular proliferration of the experience learning program through city-rural interchange. The questionnaire of Likert scale is used to measure the levels of satisfaction of the experience learning program through city-rural interchange and the intention of revisit to rural. In addition, it's problems and improvements were investigated. This thesis suggested alternative ideas as follows: ① the hightening of understanding and the enlargement of its sphere, ② the betterment of experience learning programms.③ cultivating their specialists, ④improving of progress programms and enforcing of kindness education. ⑤ the betterment of its training facilities, ⑥developing of rural foodstuffs. ⑦furthering of publicity activities. marketing and information system, ⑧constructing of regional communities. ⑨building up the administrative supporting systems, ⑩introducing evaluation system, ⑪ improving supporting policies and institutions.