• 산업공학
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• 제13권3호
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• pp.444-454
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• 2000

Due to the improvement of modern information technologies, sharing stock information among the supply chain members is a common practice nowadays. Many companies are planning to adopt the information systems to possess the real-time shared stock information. Thus, it is needed to quantify the value of shared stock information. The purpose of this paper is to evaluate the value of the shared stock information for two-echelon distribution systems. Existing reorder policies can be classified into installation stock policies and echelon stock policies. Since installation stock policies do not utilize the shared stock information, and both classes of policies may show poor performances for distribution systems, we cannot evaluate the value of the shared stock information with the existing policies. Thus, we provide a new type of reorder policy, named order risk policy. We define the order risk using marginal analysis, and prove the optimality. Through computational experiment that compares the order risk policy with the existing policies, it is shown that a significant cost reduction is achieved with the effective utilization of the shared stock information. We also show the effect of the system characteristics on the value of the shared stock information.

• Journal of Communications and Networks
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• 제9권4호
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• pp.350-355
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• 2007

Border gateway protocol allows autonomous systems(ASes) to apply diverse routing policies for selecting routes and for propagating reachability information to other ASes. Although a significant number of studies have been focused on the Internet topology, little is known about what routing policies network operators employ to configure their networks. In this paper, we infer and characterize routing policies employed in the Internet. We find that routes learned from customers are preferred over those from peers and providers, and those from peers are typically preferred over those from providers. We present an algorithm for inferring and characterizing export policies. We show that ASes announce their prefixes to a selected subset of providers to perform traffic engineering for incoming traffic. We find that the selective announcement routing policies imply that there are much less available paths in the Internet than shown in the AS connectivity graph, and can make the Internet extremely sensitive to failure events. We hope that our findings will help network operators in designing routing policies.

• 한국시스템다이내믹스학회:학술대회논문집
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• 한국시스템다이내믹스학회 2004년도 하계 학술대회 발표논문집
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• pp.109-128
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• 2004

The complexity of information and communication policy has been increasing due to its rapid changes and its expansions toward various fields. I used the2001, 2002 and 2003 White Papers on MIC(Ministry of Information and Communication Republic of Korea) as a reference and the Vensim PLE program to create a causal map. According to my analysis, no major feedback loop was found among the information and communication policies. Thus, it was impossible to conduct a causal map analysis on these policies. The causal map analysis is usually employed to understand a complex mechanism of entire policies by finding feedback loops among them. A lack of feedback loops makes it impossible to conduct the causal map analysis and means that the mechanism of such policies is even more complex to understand. The most important conclusion is that to consider feedback thought among the policies based on the systems thinking before making the policies.

• 대한산업공학회지
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• 제32권1호
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• pp.29-41
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• 2006

As the quality and environmental problems become one of the most concerned issues of company, the rework policy needs to be efficiently designed and implemented to sustain the company's competitiveness. This paper examines three basic rework policies in multi-stage production systems and analyzes them in terms of costs of setup, production, inspection, and inventory. For analyzing the performance of the rework policies, we propose mathematical models which can compute total production cost and determine the optimal production batch size to minimize the total production cost. The rework policies are classified by the number and location of inspection stages. Using the mathematical models, we could analyze the performances of rework policies and suggest the optimal rework policy according to each manufacturing environment. The analyses show that the proposed model can be used to analytically evaluate and choose the rework policies.

• 한국시스템다이내믹스연구
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• 제4권2호
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• pp.5-44
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• 2003

The focus of this paper is comparing relative effects of government policies for upbringing information security industry from the dynamic point of view. For the purpose of simplicity, these policies are classified into three groups, and then the relative effectiveness of these policy groups is examined using System Dynamics. The three policy groups are composed of technology development policies (TDP), human resource development policies (HDP), and direct supporting policies for overseas expansion (DSP). From the result of the analysis, DSP appears to be the most effective and HDP is the second-best group. By the way, for successful carrying into effect of DSP, marketing manpower should be strengthen. However, current HDP has been focusing on the bringing up technical experts. Therefore, overseas marketing manpower should be reared as well as technicians. Also, the existing infrastructure for overseas expansion for other industries should be shared for DSP of information security industry, because this is essential for success of DSP in terms of timing and costing. Finally, in spite of its low effect, TDP should be maintained continuously. The importance of information security technology is increasing and some countries have already considered these technologies as a core of future national defense. Therefore, we should acquire the competitiveness for a few technologies through continuous development of selected technologies at least.

• International Journal of Contents
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• 제6권3호
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• pp.59-64
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• 2010

The world mobile service is growing sharply and became bigger market than wired. So it is very needed to find the political way to promote mobile industry. The United States government recently decided to introduce new mobile policies for promoting mobile industry. Until now the telecommunications policies of the United States have affected policy developments for many countries including Korea. In this context, we studied the validity of introducing new mobile policies of the United States in Korea. We found that new mobile policies can cause the change of mobile market environment; mobile market power will be dispersed from network to content, application and devise, and new mobile market environment where consumers freely select and use network as well as content, application and devise will be made. Also we found empirically that if new policies are introduced in Korea, mobile industry will be promoted as Korean consumers use mobile services and goods quite actively in new mobile market. We think our results provide reasonable evidence to introduce new mobile policies in Korea.

• 기록학연구
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• 제63호
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• pp.5-36
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• 2020

행정안전부 전자정부국은 행정정보시스템의 디지털정보 보존을 본격 추진하기 위하여 전자정부법 개정을 추진하고 있다. 디지털정보의 보존은 공공기록물법에 규율된 사항이라 개정이 될 경우 양 법률 간의 갈등이 예상된다. 이러한 상황에서 공공기록정책의 전환은 더 이상 미룰 수 없는 과제가 되었다. 현재의 공공기록정책은 디지털정보를 관리하기에 미흡하다. 이 연구의 목적은 디지털 전환에 대응한 공공기록정책의 방향을 제시하는 것이다. 이를 위하여 최근 공공기록정책이 어떠한 변화양상을 보이는지 영국과 호주를 사례로 분석하였다. 정보관리로의 확장, '디지털 연속성' 관리, 자산으로의 정보의 관리, 정보거버넌스 체계의 구축이라는 특징을 도출하였으며, 행정정보시스템의 디지털정보의 경우 보존과 활용 목적을 동시에 충족시켜야 한다는 점에서 기록자산으로서의 정보관리 접근법을 강조하였다.

• Journal of Information Science Theory and Practice
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• 제3권1호
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• pp.50-65
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• 2015

Recently US/EU governments are utilizing nanotechnology as a key catalyst to support national innovation policies with economic recovery goals. US/EU nano policies have been serving as a global model to various countries, including Korea. So the authors initially seek to understand US/EU national innovation policy interconnections, and then find the role of nanotechnology development within. To strengthen national policy coherence, nanotechnology development strategies are under evolution as an innovation catalyst for promoting commercialization. To strategically support nano commercialization, EHS (Environmental, Health, Safety) and informatics are invested as priority fields to strengthen social acceptance and sustainability of nano enabled products. The current study explores US/EU national innovation policies including nano commercialization, EHS, and Informatics. Then obtained results are utilized to analyze weaknesses of Korean innovation systems of connecting creative economy and nanotechnology development policies. Then ongoing improvements are summarized focusing on EHS and informatics, which are currently prominent issues in international nanotechnology development.

• 정보보호학회논문지
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• 제32권2호
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• pp.355-370
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• 2022

본 연구는 개인적 요인에 초점을 맞춘 기존 연구를 확장하여, 조직의 환경적 요인(정보보안문화, 경영진리더십)이 조직 구성원의 정보보안 행동(정보보안정책 준수 의도, 정보보안 참여 의도)에 미치는 영향을 살펴본다. 본 연구는 금융기관 구성원 236명으로부터 데이터를 수집하였으며, 본 연구에서 개발한 모형을 구조방정식모형으로 분석하였다. 분석 결과, 정보보안문화는 정보보안정책 준수 의도와 정보보안 참여 의도에 모두 긍정적인 영향을 주었다. 거래적 리더십은 정보보안정책 준수 의도와 정보보안 참여 의도에 모두 긍정적인 영향을 주었지만, 변혁적 리더십은 정보보안 참여 의도에만 긍정적인 영향을 주었다.

• 정보보호학회논문지
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• 제24권1호
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• pp.183-193
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• 2014

IT서비스가 발달함에 따라 기업의 가치창출 수단으로 개인정보의 활용도가 높아졌고, 오 남용 및 유출의 위험도 증가하고 있다. 웹사이트 이용 및 서비스 내용을 담고 있는 개인정보 보호정책은 법에 의하여 의무적으로 공지되고 있음에도 불구하고, 낮은 가독성으로 인하여 사용자에게 내용이 효과적으로 전달되지 않는 문제점이 있다. 본 연구에서는 사용자의 정보인식효과를 높일 수 있도록 아이콘을 활용한 개인정보 보호정책의 개선된 레이어드 방식을 제안한다. 기존 텍스트 또는 테이블 방식과 비교할 때 개선된 레이어드 방식에 대하여 사용자들이 얼마나 기업의 개인정보 취급내용을 이해하고 감각적으로 풍부하게 전달받을 수 있는지 실험을 통해 사용자 정보인식 효과를 측정하였다. 실험 결과, 정보이해가능성과 생동감, 재인에 대하여 개선된 레이어드 방식이 기존의 텍스트 방식이나 테이블 방식보다 효과적이다. 사용자에게 정보를 효과적으로 전달하는 정보 시각화 측면에서 아이콘과 같은 시각적인 요소를 도입하여 개인정보 취급방침 방식을 개선한다면, 프라이버시 정책에 대한 사용자 관심이 높아지는 등 개인정보권 보호에 실질적인 도움을 줄 것으로 기대된다.