• Journal of the Korean Institute of Intelligent Systems
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• v.15 no.5
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• pp.643-648
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• 2005

In order to supply services necessary for users intelligently in the ubiquitous computing, effective filtering of context information is necessary. But studies of context information filtering have not been made much yet. In order for filtering of context information, we can use collaborative filtering being used much at electric commerce, etc. In order to use such collaborative filtering method in the filtering of ubiquitous computing environment, we must solve such problems as first rater problem, sparsity problem, stored data problem and etc. In this study, in order to solve such problems, the researcher proposes the collaborative filtering method using types of context information. And as the result of applying this filtering method to MAUCA, the P2P mobile agent system, the researcher could confirm the average result of 7.7% in the aspect of service supporting function.

• Proceedings of the Korea Society for Energy Engineering kosee Conference
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• 1998.10a
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• pp.58-63
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• 1998

국제원자력기구(IAEA : International Atomic Energy Agency)에서는 원자력의 평화적 이용을 지원하기 위한 주요수단으로 기술협력사업 (Technical Cooperation Project)을 수행하고 있다. IAEA는 동 사업을 통하여 회원국들의 원자력의 평화적 이용 과정에서 당면하게 되는 기술적 장애요인을 자체 재정지원으로 해결하고 있다. 기술협력사업 내용은 회원국의 요청에 근거하여 IAEA 이사회에서 승인되며 2년 주기로 갱신된다. 승인된 기술협력사업은 동 사업을 통하여 달성하고자 하는 뚜렷한 목표를 가지며 구체적 예산이 지원된다. IAEA의 기술협력사업에 참여하게 되는 주된 배경은 동 사업을 통한 기술전수 (technology transfer)가 국가의 과학기술발전, 특히 원자력기술의 발전에 도움이 된다고 판단하기 때문이다. 그러나 궁극적으로는 기술전수의 수혜자가 아닌 공여자의 입장으로 전환하여야 할 것이다.

• Proceedings of the Korean Nuclear Society Conference
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• 1996.05d
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• pp.476-481
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• 1996

우리나라는 1957년 창설 회원국으로 IAEA에 가입한 이래 우리나라 원자력 산업의 발전에 따라 보장조치와 관련한 협력이 증대하고 있다. 이러한 협력으로는 우리나라 원자력 시설에 대한 IAEA 사찰, 한-IAEA 보장조치 검토회의, SAGSI 활동 등이 있으며, IAEA는 우리나라의 원자력 산업 규모와 기술 능력을 고려하여 우리나라와의 협력을 강화하고자 하고 있다. 우리나라로서는 국내 통제체제의 확립과 우리나라 원자력 활동에 대한 국제적 투명성 및 신뢰도 증진을 위하여 IAEA와의 긴밀한 협력이 필요하다. 향후 우리나라는 보장조치 의무사항의 이행 뿐 아니라, IAEA Technical Office 설치, 사찰장비의 공유, 사찰의 공동 수행, 공동연구 등을 포함한 IAEA 지원 프로그램의 추진과 같은 진보된 형태의 협력을 추진토록 하여야 할 것이다.

• Information and Communications Magazine
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• v.25 no.5
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• pp.38-46
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• 2008

협력 다이버시티 기술은 최근 수년간 MIMO(Multiple-Input-Multiple-Output) 기술의 실질적인 대안으로, 애드 혹 네트워크에서의 MIMO 기술로, 셀룰러 시스템에서의 커버리지 확장 기술로 주목을 받아 왔다. 따라서, 협력 다이버시티 기술은 응용 목표에 따라 방식이 다르게 존재하게 된다. 이 논문에서는 기존의 협력 다이버시티 기술들을 몇 가지 일관된 기준으로 분류하여 보고, 이 분야에서 미진한 연구방향으로 다중사용자 환경에서의 협력 다이버시티 기술과 다중 안테나 노드를 위한 협력 다이버시티 기술을 제시한다.

• Management & Information Systems Review
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• v.35 no.2
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• pp.45-66
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• 2016

Firms can make scale of economy and scope of economy by internalizing and using new advanced technology and knowledge from technology cooperation network, decrease risk and cost with partner firm of technology cooperation network, and increase market advantage of product & strengthen firms' position in the market. Due to the advantages of technology cooperation network, the related studies have focused on the positive effect of technology cooperation network. However, the related studies investigating the relationship between technology cooperation network and firm performance have only examined the role of technology cooperation network. Safeguarding mechanism, relationship learning, and relationship performance are categorized into the process of technology cooperation network, and this categorization is applied as resources, capability, and performance by resource based view. The empirical results are reported as belows. First, relationship specific investment and relationship capital positively affect on relationship learning as capability. Second, information sharing, common information understanding, and relationship specific memory development positively affect on long-term orientation, but information sharing has no impact on efficiency and effectiveness. Third, relationship specific investment positively affects on relationship capital and efficiency and effectiveness have positive effects on long-term orientation. Applying technology cooperation network in asymmetric technology dependency with resource based theory, this study suggested the importance of both safeguarding and relationship learning by investigating the relationship among safeguarding, relationship learning, and relationship performance. And it is worthy that this study investigated how firms' behavior change affects relationship performance in the relationship of technology cooperation partner.

• The KIPS Transactions:PartB
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• v.10B no.3
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• pp.287-296
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• 2003

There has been much research focused on collaborative filtering technique in Recommender System. However, these studies have shown the First-Rater Problem and the Sparsity Problem. The main purpose of this Paper is to solve these Problems. In this Paper, we suggest the user's predicting preference method using Bayesian estimated value and the associative user clustering for the recalculation of preference. In addition to this method, to complement a shortcoming, which doesn't regard the attribution of item, we use Representative Attribute-Neighborhood method that is used for the prediction when we find the similar neighborhood through extracting the representative attribution, which most affect the preference. We improved the efficiency by using the associative user's clustering analysis in order to calculate the preference of specific item within the cluster item vector to the collaborative filtering algorithm. Besides, for the problem of the Sparsity and First-Rater, through using Association Rule Hypergraph Partitioning algorithm associative users are clustered according to the genre. New users are classified into one of these genres by Naive Bayes classifier. In addition, in order to get the similarity value between users belonged to the classified genre and new users, and this paper allows the different estimated value to item which user evaluated through Naive Bayes learning. As applying the preference granted the estimated value to Pearson correlation coefficient, it can make the higher accuracy because the errors that cause the missing value come less. We evaluate our method on a large collaborative filtering database of user rating and it significantly outperforms previous proposed method.

• Information Systems Review
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• v.19 no.2
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• pp.21-35
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• 2017

The advancement of IT and the "Fourth Industrial Revolution" blurred the boundary between industries. The importance of strategic cooperation between enterprises is emphasized. IT companies must consider their existing business areas and create new territories to drive changes in the industry. They must also secure their competitive edge and manage economic costs to enable them to compete with their global counterparts. By utilizing their resources effectively, these firms can create value through inter-firm cooperation. This study analyzes the collaborative network of global IT companies using social network analysis and examines the effect of this network on firm performance. Collaborative linkages and betweenness centrality, which represent the bridging position of a firm in a network, significantly affect firm performance. This result highlights the importance of the structural position of a firm in a cooperative network of IT companies. This study also characterizes clusters in a network of IT companies. Most of these clusters comprise a combination of IT companies in diverse IT industries. These clusters suggest that these companies engage in multilateral cooperation without boundaries to maximize their business capabilities. This study offers practical implications for establishing a cooperative strategy and framework that can capture business trends in the IT industry from a macroscopic view. This study also visualizes collaborative networks in a multifaceted way using social network analysis to provide researchers and business practitioners with an informative viewpoint.

• Journal of the Korean association of regional geographers
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• v.21 no.4
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• pp.649-659
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• 2015

According to the influence of the LINC project initiated by the Ministry of Education, Science and Technology in 2011, the number of 'University-Industry Collaboration Faculty' has been sharply increased for the last five years. It is viewed that university-industry collaboration faculty have played a prime role for promoting the university-industry collaboration. However, there is a potential threat that about 70 per cents of total expense needed for maintaining the university-industry collaboration faculty system are dependent upon finances of the LINC project. There is a concern that the university-industry collaboration faculty system will be disappeared, if a university or college fails to be selected in the LINC project or the government decides to suspend the LINC project. In order to grasp the realities and policy alternatives on the university-industry collaboration faculty system, this paper conducts a literature survey, a questionnaire survey, the in-depth interviews with experts and the persons concerned. Based on the results of the survey, we suggest policy implications in terms of legal, financial and structural dimensions.

• Journal of Digital Convergence
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• v.9 no.3
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• pp.203-212
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• 2011

This study aims to suggest the ways of mutually beneficial cooperation between large companies and small companies in the field of telecommunication services. To achieve this goal, it attempts to introduce mutually beneficial cooperation plans based on horizontal relationships rather than vertical relationships among large companies and small companies. Research contents will suggest the similarities and differences of individual telecommunication companies by analyzing mutually beneficial cooperation plans of large companies and small companies based on domestic three telecommunication companies. It examines the perceptions of people who are engaged in large companies and small companies in order to enhance the recognition on the mutual cooperation of large companies and small and medium companies. Based on research results, it attempts the activation methods of mutual cooperation of large and small companies.

• The Journal of the Korea Contents Association
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• v.12 no.2
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• pp.310-321
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• 2012

This study was conducted to establish collaborative governance for North Korean Refugees' settlement support service. Three major actors were identified. At the central government level, there is no control center to coordinate various functions. This study suggested three roles for central government in collborative governance, which are policy planning based on public value, allocating financial resources to implementing organizations, and program evaluation for securing public accountability. The rloes of local government are establishing communication channels between implementing participants, maintenancing good relations, and coordination. Finally, the role of private actors is developing high quality service programs, connecting local resources for settlement service.