• The Transactions of the Korea Information Processing Society
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• v.5 no.7
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• pp.1933-1942
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• 1998

분류 벡터 양자화(classified vector quantization: CVQ)〔2의 부코드북을 설계함에 있어서, 경쟁 학습 네트워크〔5〕-〔7〕 는 소속도의 이분법적 표현으로 상당한 소속도를 가지는 벡터들이 학습 과정에 무시되는 경향을 가진다. 이를 개선하기 위해 제안된 퍼지 경쟁 학습 네트워크〔8〕는 각 클러스터가 연속적인 소속도를 가진다는 개념을 도입하여 이와 같은 문제들을 해결했다. 그러나 퍼지 경쟁 학습 네트워크를 CVQ에 적용할 경우, 각 부코드북의 크기를 시행착오로 결정해야 하는 문제점을 여전히 가지고 있으며, 이러한 문제점들의 개선을 위하여 본 논문에서는 수정 퍼지 경쟁 학습 네트워크(modified fuzzy competitive learning network)를 제안한다. 수정 퍼지 경쟁 학습 네트워크는 퍼지 학습 네트워크가 가지는 이 분법적 소속도를 연속적인 소속도로 확장하여, 학습 과정중에 나타날 수 있는 지역 최소점 도달을 억제하였다.

• Journal of Korea Port Economic Association
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• v.25 no.2
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• pp.177-200
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• 2009

This study extracted the major attributes of the competitiveness of services provided by port logistics networks from previous research and interviews with experts and, based on the attributes, analyzed the effects of change in the competitiveness of the Incheon Port. According to the results, services provided by port logistics networks were divided into facility conveniences, access conveniences, and decision conveniences. In the results on the integrated value of the competitiveness of logistics network among ports, competitiveness was high in order of Busan Port>Qigndao Port>Tianjin Port>Dalian Port>Incheon Port. Particularly in the results of scenario analysis, with the elevation of one or two factors of logistics network service, the Incheon Port was even inferior to the Dalian Port, which had the lowest competitiveness among the ports compared. In the results of reversed fuzzy analysis, the Incheon Port could maintain equal competitiveness with the Dalian Port by raising the service level of the logistics network by 25% for facility conveniences, by 8% for access conveniences, and by 1% for decision conveniences.

• KIISE Transactions on Computing Practices
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• v.21 no.1
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• pp.40-45
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• 2015

Online social networks(OSN) are very popular nowadays. As OSNs grows, the commercial markets are expanding their social commerce by applying Influence Maximization. However, in reality, there exist more than two players(e.g., commercial companies or service providers) in this same market sector. To address the Influence Maximization problem between adversaries, we first introduced Influence Maximization against the social adversaries' problem. Then, we proposed an algorithm that could efficiently solve the problem efficiently by utilizing social network properties such as Betweenness Centrality, Clustering Coefficient, Local Bridge and Ties and Triadic Closure. Moreover, our algorithm performed orders of magnitudes better than the existing Greedy hill climbing algorithm.

• Journal of Korea Fair Competition Federation
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• no.72
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• pp.14-19
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• 2001

• Journal of Korea Fair Competition Federation
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• no.54
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• pp.2-7
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• 2000

• Journal of Korea Fair Competition Federation
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• no.78
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• pp.50-55
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• 2002

• Information and Communications Magazine
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• v.30 no.3
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• pp.9-15
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• 2013

네트워크의 물리적 전달 기능과 논리적 제어 기능이 분리되는 SDN(Software Defined Networking)이 확산되면서, H/W 장비 기업이 쥐고 있던 네트워크 시장의 주도권이 네트워크를 제어하는 S/W 개발 기업으로 이동하는 과도기가 당분간 계속될 것으로 보인다. 특히 2013년에는 SDN 기술이 가시화되고 관련 제품이 본격적으로 시장에 등장하면서, 초기 시장을 선점하여 향후 시장을 주도하기 위한 표준화 단체 및 기업간 경쟁이 치열하게 전개될 것으로 전망된다. 본 고에서는 먼저 국내외 SDN 시장규모를 전망하고 국내 네트워크 산업의 경쟁력을 살펴본다. 또한, SDN 확산에 따라 네트워크 산업 생태계가 어떻게 변화할지를 전망하고, 생태계를 구성하는 각 시장 참여자의 역할 변화에 대해 알아본다. 마지막으로, 현재 네트워크 시장에 참여하고 있는 주요 단체 및 기업의 동향을 정리하고, 앞으로의 전망 및 네트워크 산업 경쟁력 제고 방안에 대해 간략히 언급한다.

• Proceedings of the Korean Information Science Society Conference
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• 2003.10c
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• pp.211-213
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• 2003

무선 랜을 사용하는 애드 혹 네트워크에서는 경쟁 기반의 전송을 하는 링크 계층의 동작으로 인해 기존의 TCP의 정책들이 불리하게 작용하는 점이 있다. 특히, 이러한 환경에서는 패킷 전송을 위한 채널 경쟁이 큰 요소로 작용하게 된다. 본 논문에서는 무선 랜을 사용하는 애드 혹 네트워크에서 TCP의 ACK 기법을 조절하여, 경쟁으로 인한 오버헤드를 줄임으로써. 전송 효율을 높일 수 있는 방식을 제시한다.

• Knowledge Management Research
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• v.24 no.4
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• pp.177-193
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• 2023

This study explores the role of organizational culture, job characteristics, and work values and orientation in shaping the competitiveness of a multinational company (MNC) based in Korea. The purpose of the study was to examine the impact of these variables on the competitiveness attributes of the organizational culture profile through MR-QAP analysis. Data were collected from 161 employees in 15 different teams at a Korean automotive company headquartered in Seoul. The results of the study revealed the impact of network characteristics associated with competitive organizational culture on competitiveness. 'found to have a negative effect on competitiveness. Among the organizational culture profiles, social responsibility, supportiveness, innovation, and performance orientation have a significant positive effect on competitive organizational culture, while emphasis on rewards and stability have no significant effect. These findings provide practical implications for understanding the complex dynamics of organizational culture and promoting strategic approaches to enhance organizational competitiveness.

• KDI Journal of Economic Policy
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• v.31 no.2
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• pp.87-126
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• 2009

In the internet portal industry, the indirect network externality from portal visitors to advertisers and the direct network externality among portal visitors have important implications for anti-trust policies. This paper examines the existence and the magnitude of the direct/indirect network externality in the Korean internet portal industry and measures its effect on the market power of the internet portals. The results show that the direct/indirect network externality is substantive in the industry hence the market share of a portal in the visitors' side has the 'leverage' effect on its market power in the advertisers' side.