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한국기업의 해외자회사의 국제소싱전략 결정모형의 실증분석
유승훈(Seung Hun Yoo),김석수(Seog Soo Kim) 한국경영학회 2000 經營學硏究 Vol.29 No.2
By suggesting the limitations of the existing analysis model and literature containing only the transaction cost theory, the needs for additional explanatory variables were proposed in this research. Thus the analysis model was created with the core competence variable on which the empirical analysis was not carried out. To examine the proposed research model, the reliability and validity verifications on collected data were carried out and then the logit analysis was applied to the model. It was found that Korean manufacturers consider both the cost and the efficiency in making decision on the sourcing strategy. Moreover, the asset specificity, the traditional transaction cost factor, was not meaningful and the environment uncertainty had a meaningful role in making decisions on the intra-firm sourcing and inter-firm sourcing strategies. As the environment uncertainty grows up, the firms tend to choose the intra-firm sourcing strategy. The core competence theory also has a considerable influence on making decisions on sourcing strategies. That is, Korean firms choose the intra-firm sourcing strategy if the production of sourcing parts is the core competence itself.
유승훈(Seung Hun Ryu),유승원(Seung Won Yoo),박종찬(Jong Chan Park),국종영(Jong Young Kuk),최정헌(Jung Hun Choi) 한국자동차공학회 2012 한국자동차공학회 학술대회 및 전시회 Vol.2012 No.11
This paper has performed a test and analysis study on the woven glass and carbon fabric/epoxy laminate composite and sandwich panels of mid-size bus vehicle. Mechanical properties of core and composite materials are needed for accurate analysis of the sandwich composites. Elastic and shear modulus and poisson"s ratio of GFRP and CFRP and core material were established from the tension, shear and bending specimens test. Also, fatigue strength Se is established from the fatigue test using the stair case method that one of the statistical method. The fatigue test was conducted using a tension-tension load with a stress ratio R of 0.1 and frequency of 10 Hz. In order to do FE model verification and evaluate the structural behavior and safety of the joint structure of side panel, the static load tests such as vertical load and compressive load and torsion load tests have been conducted. Finally we achieve a lighter mid-bus structure satisfying the target stiffness, strength and durability, and this technique will be applicable to other vehicles and components.
Grid에서의 자원 정보 저장 및 할당에 대한 설계 및 구현
유승훈(Seung-Hun Yoo),이태동(Tae-Dong Lee),진정훈(Jung-Hun Jin),장재형(Jae-Hyung Jang),임중호(Jung-Ho Lim),정창성(Chang-Sung Jeong) 한국정보과학회 2003 한국정보과학회 학술발표논문집 Vol.30 No.2Ⅰ
Grid란 네트워크로 연결된 가상의 슈퍼 컴퓨터를 말하는 것으로 Grid Middleware Toolkit인 Globus가 대표적인 구현물이다. Globus는 사용자에게 Grid의 상태 정보를 제공하는 방법으로 RSL에 의한 query와 MDS의 LDAP 프로토콜을 통한 query로 나뉘어진다. 그러나 이런 방법들은 다이나믹한 환경에서 잦은 정보의 변화로 인해 query나 실시간적인 자료의 처리가 요구되는 시스템에서 긴 query response로 인해 효과적이지 않다. 따라서 본 논문에서는 MDS 서비스에서의 자료의 저장 방법 및 자원 할당방법에 대해 살펴보도록 하겠다.