Economic Design for Expanding Networks using Hybrid Genetic Approach

염창선(Chang-Sun Yum),배상욱(Sang-Wook Bae) 한국산업경영시스템학회 2005 한국산업경영시스템학회지 Vol.28 No.1

이 논문에서는 백본 네트워크의 경제적 확장 방법을 제시한다. 기존 연구에서의 네트워크 확장은 기 설치된 네트워크에 새로운 노드를 추가하는 데 그치고 있다. 이 논문에서는 새로운 노드의 추가 외에 기 설치된 링크의 용량 확장 까지를 고려하는 경제적 확장 설계 방법을 제시한다. 경제적 네트워크 확장은기 설치된 네트워크와 perform-ability를 제약조건으로 하면서 비용을 최소화하는 문제로 표현된다. 효율적인 해외 탐색을 위해 이진과 K진이 혼용된 하이브리드 유전자 접근 방법을 사용한다.

초등학교 저학년 기본교과 연극 수업에 나타난 수행적 특성 고찰: 자신의 정체성을 찾아가는 여행 이야기를 중심으로

염창선 ( Yum Chang-sun ) 한국예술교육학회 2021 예술교육연구 Vol.19 No.1

이 연구는 체험중심 연극 수업 강화로 연극의 ‘수행성’이 강조되는 가운데 수행성을 중심으로 연극 수업 개발 및 연구에 새로운 방향을 제시할 수 있다. 초등학교 저학년을 대상으로 연극 수업 프로그램을 개발하고, 실행해 본 결과, 초등학교 저학년 연극 수업에 나타난 수행적 특성은 매체성, 물질성, 기호성, 심미성의 관점에서 놀이를 통한 신체적 공동 현존, 자기-지시성, 창발성, 경계성으로 나타난다. 본 연구를 통해 저학년들이 고학년보다 더욱 창발성이 두드러지며, 행위를 하는 과정 중에 새로운 의미를 만들게 됨을 알게 되었다. 또한 연극수업은 변환의 체험을 통해 참여자들을 성장하게 하는 효과가 있음을 알게 되었다. This study can suggest a new direction for the development and research of drama classes focusing on performance while the ‘performance’ of play is emphasized by reinforcing experience-based play classes. As a result of developing and implementing a drama class program for the lower grades of elementary school, the performance characteristics that appeared in the play classes in the lower grades of elementary school appear as ‘bodily co-presence’ through play, ‘self-reference’, ‘emergence’, and ‘liminality’ in terms of mediality, materiality, semiotictity, and aestheticity. Through this study, it was found that the lower grades are more evident than the higher grades, and new meanings are created during the course of their actions. In addition, it was found that the theater class has the effect of growing the participants through the experience of transformation.

모바일뱅킹의 고객만족에 영향을 미치는 요인 연구

염창선(Chang-Sun Yum) 한국산업경영시스템학회 2008 한국산업경영시스템학회지 Vol.31 No.2

  The purpose of this study is to find out the factors of customer satisfaction as the critical success factors of mobile banking. Based on previous exploratory work and a review of the literature of customer satisfaction, nine key factors are identified: perceived usefulness, perceived easy of use, perceived ubiquity, perceived safety, perceived tangibles, perceived reliability, perceived responsiveness, perceived assurance, and perceived empathy. A conceptual model is developed and hypotheses are empirically examined using multiple regression analysis. The result of this research are summarized as follows: First, perceived usefulness, perceived easy of use, perceived safety, and perceived empathy have significant influence on customer satisfaction. Second, customer satisfaction has significant influence on reuse intention and word-of-mouth intention.

유전자 알고리즘을 이용한 경제적 LAN 설계

염창선(Chang-Sun Yum),이한진(Han-Jin Lee) 한국산업경영시스템학회 2005 한국산업경영시스템학회지 Vol.28 No.2

In this paper, the design problem of local area networks is defined as finding the network topology minimizing cost subject to reliability constraint. The design problem includes issues such as multiple choices of link type for each possible link, multiple choices of hub type for each hub, and allocation of the users to the hubs. To efficiently solve the problem, a genetic approach is suggested. According to the experiments, the proposed approach improves search performance.

초등학교 고학년 국어 교과연계 연극 수업에 나타난 수행적 특성 고찰: 철학적 질문이 있는 이야기를 중심으로

염창선 ( Yum Chang-sun ) 한국예술교육학회 2020 예술교육연구 Vol.18 No.4

이 연구는 교육과정에서 창의·융합형 인재 양성을 위한 체험중심 연극 수업이 강조되고 있으므로 포스트 드라마 시대에 퍼포먼스로 확장하는 연극의 정의와 개념을 규명하고, 이를 교육연극에 적용하여 초등학교 연극 수업에 나타난 특성이 퍼포먼스의 특성과 유사성이 있음을 밝히고자 한다. 연구를 위해 초등국어 교과연계 연극 수업 프로그램을 개발 · 실행 후 그 결과를 중심으로 매체성, 물질성, 기호성, 심미성의 관점에서 연극 수업에 나타난 수행적 특성을 고찰하였다. 연극 수업에 나타난 수행성은 참여자들의 자발적 참여, 신체적 공동 현존, 주체표현, 미적 체험을 통해 참여자들의 변화를 유도한다. 본 연구를 통하여 참여· 과정 중심 초등학교 연극수업이 수행성 그 자체와 밀접한 관련이 있음을 알게 되었다. This study aims to clarify the definition and concept of the play expanding into performance in the post-drama era, and apply it to educational plays to reveal that the characteristics shown in elementary school play classes are similar to those of performance. For the study, the performance characteristics shown in the theater class were considered in terms of mediality, materiality, semiotictity, and aestheticity focusing on the results after the implementation of the elementary Korean language textbook-linked play class program. As a result, the play class was a “Bodily Co-presence” through play for all the first participants, and in the second classroom, the performance factors that were transmitted to the participants' bodies and sounds were revealed, the biggest feature of which was the “Self-reference” of telling their own stories with the participants' self-expression. Third, “Emergence” of meanings appeared in the drama class as "creative." Unpredictable creativity has made me realize that the role of a leader in theater classes is important. As the fourth event, the articulate experience appeared “Liminality” which allowed participants to fall into the "not just" boundary area. In addition, aesthetic experience has shown that participation and process-oriented elementary drama classes are closely related to performance itself.

웹 기반 방송정보시스템 개발에 관한 연구

김지혁,염창선,Kim, Ji Hyuk,Yum, Chang Sun 한국스마트미디어학회 2017 스마트미디어저널 Vol.6 No.1

최근 방송사는 인터넷, 케이블 TV, DMB(Digital Multimedia Broadcasting) 등으로 대표되는 뉴미디어의 등장이라는 사회적 환경 변화와 방송통신 융합이라는 정책적 환경 변화를 겪고 있다. 이러한 변화를 극복하기 위해, 방송사는 새로운 방송정보시스템 구축에 많은 관심을 보이고 있다. 본 연구는 중소 규모의 방송사에 적합한 웹 기반 방송정보시스템의 개발 과정을 제시한다. 이를 위해 시스템 구성도, 업무기능 관계도, 업무흐름도, 개체관계성도, 주요 프로그램, 사용자인터페이스 등을 기술한다. 본 연구에서 제시된 웹 기반 방송정보시스템은 사내외에서 신속한 의사결정과 업무처리를 가능하게 하여 업무 생산성을 제고할 것으로 기대된다. Recently, broadcasting companies have been faced with changes in social environment, particularly, the emergence of new media, including the internet, cable TV and DMB, and in the political environment, such as convergence in broadcasting and communications media. To cope with these changes, broadcasting companies are showing increasing interest in building new broadcasting information systems. This study presents how to develop a web-based broadcasting information system for the small and medium-sized broadcasting company. For developing the system, the study describes system configuration, business function relationship diagrams and business flow diagrams, entity relationship diagrams, major programs, and graphic user interfaces. The newly developed web-based broadcasting information system is expected to increase business productivity to a significant extent through faster decision-making and business execution in and out of the company.

닷넷을 이용한 안정적 서비스를 위한 웹 기반 학습평가시스템 개발

정수현(Su-Hyun Jeong),염창선(Chang-Sun Yum) 한국산업경영시스템학회 2007 한국산업경영시스템학회지 Vol.30 No.4

  This study aims to design and implement a learning evaluation system using .NET which is developed by Microsoft. .NET technology supports higher processing speed than ASP technology. The learning evaluation system is based on the web, consists of administrator module, questioner module and student module. The functions of the system, i.e., providing test questions, performing test, and evaluating result of test are achieving on the web in real time. Even when many users use this system, the system is stable and has a speed response time.

네트워크 카메라를 이용한 다자간 화상회의시스템 개발에 대한 연구

이강석(Kang-Seok Lee),염창선(Chang-Sun Yum) 한국정보기술학회 2010 한국정보기술학회논문지 Vol.8 No.12

Existing messenger-based video conferencing systems use cameras that are built-in to the user’s PC. These PC cameras record analog video and transmit the images to user’s PC through serial port. The images are converted into digital format and compressed in the PC. Therefore this type of video conferencing system has a limitation-only being able to provide SD(Standard Definition) quality. To overcome this limitation, our research presents the new structure of multilateral video conferencing systems using CPU-integrated network cameras instead of PC cameras. The CPU-integrated network cameras reduce processing loads of user’s PC and support video-conference in HD(High Definition)-quality. In order to develop the suggested video conferencing system, our research designs system composition, conference procedure, sequence diagram, key program, and graphical user interfaces.

Scatter Search 접근방법을 이용한 LAN 확장을 위한 경제적 설계

이한진(Han-Jin Lee),염창선(Chang-Sun Yum) 한국정보기술학회 2013 한국정보기술학회논문지 Vol.11 No.3

At the initial deployment of local area networks, it is very difficult to design with considering fast growing demand. To meet this new demand, a local area networks is gradually expanded with addition of new hubs and new users. In this paper, the design problem of local area network expansion is defined as minimizing the network cost subject to reliability constraint. The design problem includes issues such as choices of link type for each possible link, multiple choices of hub type for each hub, and allocation of the users to the hubs. This problem is known to be NP-hard. To efficiently solve the problem, a scatter search approach is proposed. Two illustrative examples are used to explain and to test the proposed approach. The experimental results showed evidence that the proposed approach performs more efficiently for finding a good solution or near optimal solution in comparison with genetic algorithm approach.

트리형 컴퓨터 네트워크 설계를 위한 유전자 접근방법의 성능 분석

이한진(Han-Jin Lee),염창선(Chang-Sun Yum) 한국정보기술학회 2011 한국정보기술학회논문지 Vol.9 No.9

This paper considers a topological optimization of a tree based network design with traffic capacity and mean packet delay constraints. The objective is to find the topological layout of links, at minimal cost. This problem is known to be NP-hard. To efficiently solve the problem, a tabu list coupled genetic algorithm approach is proposed. Illustrative examples are used to explain and test the proposed approach. Experimental results show evidence that the proposed approach performs more efficiently for finding a good solution or near optimal solution in comparison with a genetic approach.