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인과지도 분석을 통한 이주가 직업군인의 복무의지에 미치는 영향에 관한 연구
고성필 ( Seong Pil Ko ),이정동 ( Jeong Dong Lee ),최정환 ( Jeong Hwan Choi ),정의열 ( Euy Young Jung ) 한국시스템다이내믹스학회 2013 한국시스템다이내믹스 연구 Vol.14 No.1
The purpose of this paper is to explore the relationship between the number of relocation and volition of soldier`s service based on system thinking perspective using a causal loop analysis. Research adopting system dynamics concerning on the volition of soldier`s service and relocation has not been studied yet. Causal loops are analyzed and evaluated by focusing on soldier`s military performance, stress of family members and family members` welfare service. Result of this study is that soldier`s periodical movement is indispensable factor maintaining military life. Most of the married soldier`s life conditions are worse than ordinary people. As the number of relocation is increasing family of soldier`s stress is increased by anxiety for welfare conditions is supposed to relocate. The number of movement to another place of soldier`s children is more than two times and the result of learning achievement is worse than ordinary students. This kind of stress can influence the married soldier`s military performance and stress. So the welfare service should be expanded to an official residence, education, facility, district network service and so on.
시스템다이내믹스를 이용한 제조 또는 구매결정에 관한 연구: 방위산업을 중심으로
고성필 ( Seong Pil Ko ),정의영 ( Euy Young Jung ),이정동 ( Jeong Dong Lee ) 한국시스템다이내믹스학회 2014 한국시스템다이내믹스 연구 Vol.15 No.4
We propose a composite make or buy decision model considering both the transaction cost theory and the resource based view in the Korean defense industry using System Dynamics. We analyze relationship between core variables(transaction frequency, technological uncertainty, the level of technological dependency, technological level and acquisition ability for market information) and ``Make or Buy decision`` focused on technological innovation capability. Based on the result, we propose the implications as follows : First, the defence industry needs more R&D investment. Second, it needs a balance between domestic(Make) and overseas(Buy) to increase the technological capability rapidly.
제약산업에서 FDA규제 영향에 관한 시스템 다이내믹스 모델링: FDA규제가 R&D비용에 미치는 영향을 중심으로
고성필 ( Seong Pil Ko ),최정환 ( Jeong Hwan Choi ),남동욱 ( Dong Wok Nam ),이정동 ( Jeong Dong Lee ) 한국시스템다이내믹스학회 2012 한국시스템다이내믹스 연구 Vol.13 No.4
This research studies effect of FDA regulations in pharmaceutical industry on new drug development. System dynamics is implemented to demonstrate dynamic relationship between FDA regulations and R&D costs, firm`s profits, sales. This research is focused on clinical trials of new medical entity process 50~60% portion of total development cost. Simulation results say that firm`s profit is more sensitive to increasing the regulation than alleviating the regulation and effect of regulation policy make different result depending on the intensity of regulation and policy direction. Our simulation model provides the instrumental means for the policy makers and strategic decision in pharmaceutical industry.
시스템 다이내믹스를 이용한 제조-구매 결정 전략: 한국의 방위력 개선 사업을 중심으로
최정환 ( Jeong Hwan Choi ),고성필 ( Seong Pil Ko ),이정동 ( Jeong Dong Lee ) 한국시스템다이내믹스학회 2012 한국시스템다이내믹스 연구 Vol.13 No.1
Strategic decision on the execution of national security improvement project is greatly important for the present and future national security. Though, the importance of strategic decision, decision making process has been executed under one-way thinking framework. This research provides a decision-making tool with make-or-buy approach for the national security improvement policy execution methods: foreign purchase and military R&D project, and, via simulation, confirms dynamic change of military capability index respect to change in ratio of foreign purchase and military R&D. A result shows that current ratio of foreign purchases and military R&D is insufficient for national security improvement policy goal. Applying the model from this research provides an appropriate ratio for short term and long term defense strategy and policy goal, and consequent result of increase in national security capability. Thus, this research model can be effectively utilized for national security improvement project.