• Proceedings of the Korea Contents Association Conference
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• 2007.11a
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• pp.586-588
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• 2007

The Moore's law states that the number of transistors on a chip doubles about every 18 months. And it was reported that the network speed has been doubled about every 9 months. This indicates that computing power and network is no longer the obstacles for the high performance applications requiring terabits networks. We believe that the application motivates the network and vice versa. This presentation will introduce the GLORIAD which is the first ring network connecting six countries around the world and provides scientists with advanced networking tools that improve a communications and data exchange. The GLORIAD trans-Pacific link started its service on August 1, 2005. Since then, there has been remarkable demonstrations were performed through major conferences like Supercomputing Conference. This paper will introduce the global collaborative works on demonstrations of VMT, high energy physics, SDSS and HD video transmission during SC'06 in Tampa, FL.

• Proceedings of the Korean Information Science Society Conference
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• 1999.10c
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• pp.703-705
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• 1999

셀룰러 네트워크에서의 효율적인 채널 할당 문제는 통신자원의 사용을 최적화하려는 의도에서 여러 연구자들에 의해 최근 활발히 연구되고 있다. 셀룰러 네트워크는 셀을 나타내는 노드들로 이루어진 삼각형의 격자모양의 그래프로 모델 되어지며, 셀룰러 네트워크에서의 채널할당 문제는 그래프에서의 컬러링 문제로 바꿔질 수 있다. 본 논문에서는 셀룰러 네트워크에서의 최적의 채널 할당 알고리즘을 제안하며, 셀의 수가 N일 때 시간 복잡도가 O(N)인 알고리즘이다.

• Journal of Korea Technology Innovation Society
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• v.10 no.4
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• pp.605-628
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• 2007

We analyze the embedded structure of the cooperative research network of innovation studies in Korea by employing the social network methodology. The network covers all the contributing authors of two journals such as JTI and KTIS, which are the representative journals in the area. Across the networks, the following is noted: networks are highly segmented and the link density is low. However, the KTIS network contains a huge component with 131 authors which implies the existence of a strong cooperative research infrastructure. We derived three sub-networks such as technology economics, technology management, and technology policy. The technology policy network has the lowest link density, while the technology management network of KTIS shows relatively high cohesion among the researchers. Simulation analysis for the mean links of networks by author affiliation divided into university and others show no significant difference between the two networks. We also found a higher ratio of linkage within affiliated network than between networks, rejecting our hypothesis that researchers will not discriminate their research partners due to strong governmental inducement of academia-res each-industry cooperation. The explainability of indices from network structure such as structural holes and clustering coefficients on the performance of researchers measured by the number of citations confirms the results reported in Oh, Choi & Kim (2006) which dealt with the research network of information systems.

• Journal of the Korean Society for information Management
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• v.24 no.3
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• pp.43-65
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• 2007

Automatic recommendation system of panel pool should be designed to support universal, expertness, fairness, and reasonableness in the process of review of proposals. In this research, we apply the theory of probabilistic ontology to measure relatedness between terms in the classification of academic domain, enlarge the number of review candidates, and rank recommendable reviewers according to their expertness. In addition, we construct a researcher network connecting among researchers according to their various relationships like mentor, coauthor, and cooperative research. We use the researcher network to exclude inappropriate reviewers and support fairness of reviewer recommendation process. Our methodology recommending proper reviewers is verified from experts in the field of proposal examination. It propose the proper method for developing a resonable reviewer recommendation system.

• Journal of the Korean Society for information Management
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• v.25 no.4
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• pp.327-345
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• 2008

The main purposes of this study are to construct a Korean science network from journal contributions data of Korean researchers, and to analyze the structure and characteristics of the network. First of all, the association matrix of 140 scholarly domains are calculated based on the number of contributions in common journals, and then the Pathfinder network algorithm is applied to those matrix. The resulting network has several hubs such as 'Biology', 'Korean Language & Linguistics', 'Physics', etc. The entropy formula and several centrality measures for the weighted networks are adopted to identify the centralities and interdisciplinarity of each scholarly domain. In particular, the date hubs, which have several weak links, are successively distinguished by local and global triangle betweenness centrality measures.

• Proceedings of the Korean Information Science Society Conference
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• 2006.06b
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• pp.100-102
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• 2006

연구자 간 협업을 지원하기 위한 정보 유통 플랫폼은 통제 가능한 검증된 정보의 유통을 보장하여야 한다. 그렇지만, 기존의 정보 유통 관련 연구들은 어떠한 유형의 정보를 유통시킬 것인가, 또는 어떤 명세로 플랫폼을 설계 할 것인가에만 국한되어 왔다. 본 연구에서는 기존 정보 유통 연구들이나 P2P 시스템들에서 다루지 못한 정보 검증과 추적에 초점을 맞추고 있으며, 연구자들을 위한 추론 서비스 제공까지도 가능한 플랫폼의 설계와 구현을 기술한다. 본 정보 유통 플랫폼을 통해 제공되는 서비스는 연구자들의 자발적 정보 교류를 지원하는 정보 유통 서비스와 단순 정보 검색이나 질의 응답으로 제공하기 힘든 지식 서비스로 구성된다. 지식 서비스는 다시 온톨로지를 이용한 지식화 과정과 시멘틱 웹 기반 추론 엔진을 이용한 추론 서비스로 나누어진다. 특히, 본 연구에서는 기존의 시멘틱 웹 기반 시스템들이 보여주지 못한 동적인 지식 추가와 이를 반영한 추론 과정을 연구자 간 협업 지원 서비스 시나리오에 맞추어 구현하였다. 국가 R&D기반 정보 모델링을 위해 온톨로지를 구축하였으며, 한국과학기술정보연구원 내부 성과 정보 2,300여 건으로부터 얻어진 37,656 RDF Triple들을 이용하여 연구자 네트워크, 연구자 추적, 연구 맵 등 세 가지 추론 서비스를 제공할 수 있도록 하였다. 본 연구는 실제적인 시멘틱 웹기반 정보 유통 플랫폼의 실현 가능성을 보여주었다는 데 그 중요성이 있다.

• Proceedings of the KAIS Fall Conference
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• 2010.05b
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• pp.626-629
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• 2010

전통적인 프로그램 성과 평가 방법에서 간과되었던 사회 네트워크 분석을 프로그램 성과 평가에 활용할 수 있도록 평가 모형을 정립하고 이를 대학 자체학술지원 프로그램에 적용하여 네트워크 관점에서의 성과를 측정한다. 네트워크 관점에서의 성과 목표를 연결정도의 향상으로 설정한 후, 자체학술지원 프로그램의 지원을 받은 연구자들의 연결정도 향상이 통계적으로 유의미한 차이를 나타내고 있음을 보인다.

• ICROS
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• v.18 no.3
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• pp.33-36
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• 2012

최근 컴퓨터, 정보통신, 제어 기술이 융합된 Cyber-Physical Systems 기술에 대해 많은 연구자들의 관심이 증가하고 있고, 이에 대한 연구가 선진국을 중심으로 활발히 진행되고 있다. 이와 관련하여 본 논문에서는 센서네트워크를 사이버-물리시스템 또는 다양한 응용서비스 분야에 적용한 사례를 중심으로 소개한다.

• Journal of Technology Innovation
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• v.24 no.4
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• pp.1-26
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• 2016

The period after the PhD has a huge impact on the careers of researcher from a researcher lifecycle perspective. This is a turning point which student receives guidance from professor and become an independent researcher. Furthermore, they learn to develop ideas for independent research, apply for grants and manage a project; they also form expert networks in related filed and publish papers to share their findings. This study focuses on the period between earning doctoral degree and being employed as a stable position in university. This study starts from a research questions that asks which factors of postdoctoral experience affect research output. In this study, the paper performance, especially co-authorship of paper, of postdoctoral researchers was investigated. The cumulative advantage theory and Matthew effect were employed to shed a light on this research question. The empirical work is based on the Survey & Analysis of National R&D program in Korea conducted by Korea Institute of S&T Evaluation and Planning (KISTEP). The correlations between the research output and characteristics of postdoctoral experience were verified. These results are expected to contribute as new empirical evidences on investigating knowledge transfer activities of new PhDs.

• Journal of the Korea Convergence Society
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• v.9 no.9
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• pp.61-67
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• 2018

Emulab software was developed by the team of University of Utah and it has been replicated at dozens of other sites in the world. Although KREONET Emulab, which established by the Korea Institute of Science and Technology Information, has only a modest number of compute nodes it has been provided an ideal playground to conduct various research for network protocols, cyber security and convergence research. A testbed is a critical enabler of experimental research and researchers only carry out the experiments that are supported by the testbed. This paper outlines the Utah Emulab's status and use types among the last 10 years of operation results and compares them with the ones with the KREONET Emulab. In addition, Testbed-as-a-Service(TaaS) is discussed to upgrade the testbed for the convergence research community services.