• 기술혁신학회지
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• 제12권1호
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• pp.88-112
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• 2009

본 논문은 효율적인 IT고급인력양성정책 추진을 위하여 IT고급인력을 정의하고, 지금까지 추진되어 온 정부의 IT고급인력양성 정책의 변천과정을 살펴보았다. 또한 국내외의 고급인력양성정책 비교 및 문제점을 분석하여 미래지향적 IT고급인력양성 정책방향을 설정하였다. 이를 위해 IT분야 국가 R&D 로드맵과 연계한 고급인력양성체계 구축, 공급확대 유지 및 글로벌 경쟁력을 배양하는 고급인력양성으로의 비전 전환, IT기반 융합인력양성으로의 범위 확대, R&D연계형 인력양성사업의 성과제고를 위한 연구방향의 명확화 등 4가지 기본방향과 이에 따른 세부추진 방향을 제시하였다.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제7권2호
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• pp.234-252
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• 2013

Due to the uncertain of connections in Delay Tolerant Networks (DTNs), most routing algorithms in DTNs need nodes to forward the message to others based on the opportunistic contact. The contact is related with the beaconing rate. In particular, nodes have more chances to encounter with each other with bigger beaconing rate, but more energy will be used. On the other hand, if the nodes forward the message to every node all the time, the efficiency of the routing algorithm is better, but it needs more energy, too. This paper tries to exploit the optimal beaconing rate and forwarding rate when the total energy is constraint. First, a theoretical framework is proposed, which can be used to evaluate the performance with different forwarding rate and beaconing rate. Then, this paper formulates a joint optimization problem based on the framework. Through Pontryagin's Maximal Principle, this paper obtains the optimal policy and proves that both the optimal forwarding and beaconing rates conform to threshold form. Simulation results show the accuracy of the theoretical framework. Extensive numerical results show that the optimal policy obtained in this paper is the best.

• 한국지능시스템학회논문지
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• 제18권5호
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• pp.679-684
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• 2008

느린 포트스캔 공격 탐지는 네트워크 보안에서 중요한 분야 중 하나이다. 본 논문에서는 퍼지 룰을 이용한 비정상 트래픽 컨트롤 프레임워크를 이용한 느린 포트스캔 공격을 탐지하고 대응하는 방법을 제안한다. 비정상 트래픽 컨트롤 프레임워크는 침입차단 시스템으로 동작하면서 의심 단계의 네트워크 트래픽을 대응하는 기능을 가진다. 본 논문에서 제안하는 방법은 공격 혹은 공격 의심 트래픽에 대해 단계적 대응을 한다. 먼저 의심 단계에 있는 트래픽에 대해 대역폭을 줄여 서비스를 하다가 최종적으로 공격으로 판명되면 트래픽을 차단한다. 본 논문에서는 제안한 방법을 프레임워크에 구축하고 실험을 통해 느린 포트스캔 공격에 효과적임을 보인다.

• 전기학회논문지
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• 제66권12호
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• pp.1879-1888
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• 2017

The Internet of Things (IoT) environment has been gradually approaching reality, and although it provides great convenience, security threats are increasing accordingly. For the IoT environment to settle safely, careful consideration of information security is necessary. Although many security measures in the design and development stages of IoT products have been studied thus far, apart from them, the establishment of systems and countermeasures for post management after the launch of IoT products is also very important. In the present paper, a technical and policy post-security management framework is proposed to provide secure IoT environments. The proposed framework defines the concrete response procedures of individual entities such as users, manufacturers, and competent authorities in the case of the occurrence of security flaws after launching IoT products, and performs appropriate measures such as software updates and recalls based on an assessment of the risk of security flaws.

• Asia pacific journal of information systems
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• 제31권3호
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• pp.433-447
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• 2021

The purpose of this paper is to shed light on the current status of Industry 4.0 policies in India and provide holistic policy recommendations in the transition towards Industry 4.0. The study was conducted based on the content-centric review of written policy documents like policy memoranda (memos), green papers and white papers, policy briefs, policy reports, opinion pieces, and newspaper and academic publications on Industry 4.0. India lacks infrastructure, regulatory framework, architectural reference model, incentives, skills, and standard roadmap towards Industry 4.0. The current policy status and policy recommendations presented in this study can serve as a great asset for academicians, policymakers, and practitioners to prepare a holistic roadmap for Industry 4.0 policy implementation. The study is first to assess India's current policy status and compare with Germany towards Industry 4.0. Besides, it is expected to assist government policymakers in formulating tangible policy outputs and strategic roadmaps.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제6권9호
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• pp.2202-2217
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• 2012

The transmission opportunities between nodes in Delay Tolerant Network (DTNs) are uncertain, and routing algorithms in DTNs often need nodes serving as relays for others to carry and forward messages. Due to selfishness, nodes may ask the source to pay a certain reward, and the reward may be varying with time. Moreover, the reward that the source obtains from the destination may also be varying with time. For example, the sooner the destination gets the message, the more rewards the source may obtain. The goal of this paper is to explore efficient ways for the source to maximize its total reward in such complex applications when it uses the probabilistic two-hop routing policy. We first propose a theoretical framework, which can be used to evaluate the total reward that the source can obtain. Then based on the model, we prove that the optimal forwarding policy confirms to the threshold form by the Pontryagin's Maximum Principle. Simulations based on both synthetic and real motion traces show the accuracy of our theoretical framework. Furthermore, we demonstrate that the performance of the optimal forwarding policy with threshold form is better through extensive numerical results, which conforms to the result obtained by the Maximum Principle.

• 한국농촌건축학회논문집
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• 제10권4호
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• pp.57-64
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• 2008

This paper presents the real condition and problems of rural communities, shift of social paradigm, and also discussed the results and efforts of existing energy supporting policy by literature review. The aim of this study is to suggest the new supporting policy of energy saving facilities for rural communities, and to show its necessity, framework, promotion method, and connection plan with existing policy. Based on this study, mainly three results can be drawn as follows; first, this new policy is required that not only suggestive reason such as energy crisis and social atmosphere, but also, financial support and welfare service for resident of rural area. Second, the various rural facilities including residence must be planed sustainable energy saving system by this new policy. And the third, this policy should be simultaneously adopted with rural development policy, and must drive forward that is closely connected with a related policy.

• Ocean and Polar Research
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• 제37권3호
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• pp.211-223
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• 2015

Korean society has been recently promoting the restoration of coastal wetlands. These efforts might become the basis of a policy framework that compensates for the limitations of a regulation-oriented policy such as the designation of Marine Protected Areas (MPAs). The shift in government policy could contribute to strengthening the socioeconomic infrastructure of coastal development through the accumulation of ecological capital. Although our scientific efforts and social demands in regard to the ecological restoration of the coastal wetlands have increased during the past years, the bases for restoration in Korea requires that scientific, technological, financial, social and legal aspects be enhanced. The present study re-examined the concept and attitudes behind coastal wetland restoration in the light of changing circumstances in Korea. Herein, we first defined coastal wetland restoration as "An act of recovering the functions of the ecosystem of coastal wetlands to a state that resembles conditions prior to being damaged." Next, this study discussed the limitations and future directions of such restoration efforts based on the descriptive analyses of recent restoration practices from social, economic, and technological aspects. Finally, we suggest future policy directions regarding coastal wetland restoration on the basis of a PFST (Policy, Financial, Social, and Technological) analysis; 1) re-arranging legal mechanisms, 2) setting multi-dimensional restoration goals, 3) establishing a multi-discipline- and convergence based R&D system, 4) linking spatial management and local development to the restoration, 5) building restoration governance at the local level, 6) implementing an ecosystem service payment system, and 7) applying test-bed projects in accordance with proper directions.

• 한국멀티미디어학회논문지
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• 제11권1호
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• pp.106-116
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• 2008

불안정한 연결성 및 빈번한 컨텍스트 변화 등은 모바일 환경에서 웹 서비스를 제공하는데 많은 문제점을 야기시킨다. 이를 해결하기 위해서는 사용자에게 지속적으로 서비스 제공이 가능한 디바이스로의 웹 서비스 이동이 필수적이다. 그러나 모바일 디바이스에서의 웹 서비스 이동, 복제, 그리고 호스팅에 관한 연구는 아직 초기단계에 불과하다. 본 논문에서는 모바일 환경에서의 웹 서비스 이동을 위하여 경량의 웹 서비스 프레임웍과 함께 효과적인 이동정책 수립기법을 제안한다. 제안된 방법은 WS-Policy를 기반으로 다양한 컨텍스트 정보를 기술할 수 있는 스키마를 정의하고, 이를 사용하여 이동정책을 수립한다. 특히, 제안된 스키마는 서비스 제공자의 요구사항을 자유롭게 표현하기 위하여 확장 가능하도록 설계되었다. 이동정책의 유효성을 검증하기 위하여, 제안된 방법을 모바일 웹 서비스 프레임웍에 적용한 결과, 웹 서비스 이동을 통한 연속적인 서비스의 제공이 가능함을 보였다.

• 기술혁신연구
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• 제13권3호
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• pp.257-287
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• 2005

The purpose of this paper is to develop a desirable government policy for attracting highly skilled professional foreign human resources. To achieve the purpose, following research methods were pursued; 1) a review on the current status of government policy on highly qualified foreign professionals, 2) case studies on foreign governments' policy on the issue, 3) a survey over Korean firms which are employing foreign high-tech professionals. Based on above research results, policy suggestions for the Korean government are recommended as follows: formulating a basic framework of the government policy to attract foreign high-tech professionals, revising the nonimmigrant visa policy for foreign professionals, collecting and distributing personnel data of foreign applicants for jobs In Korea, developing external and internal public relations, revising the method of supporting small and medium-sized firms, taking a systematic approach to attract korean-American scientists, redesigning sponsorship programs for inviting world famous scholars and scientists, increasing global joint research projects, facilitating favorable infrastructure for foreign engineers and scientists.