• 융합경영연구
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• 제6권3호
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• pp.10-13
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• 2018

Purpose - On the basis of discussing the network economy concept and the commentary of the marginal revenue decreasing of traditional economic theory, The concept of network economy has just been put forward in recent years. The reason why such a concept appears is that the information technology, marked by computer network, plays an increasingly important role in economic activities. Some people define network economy as an economic form based on network technology and human capital. this paper points out network economy existing the marginal revenue increasing and analyzes the reasons that influencing the marginal revenue increasing. Research design, data, methodology - The network economy has fundamentally changed the traditional economic laws. The economic basis of industrial society is the law of incremental marginal cost, which reflects the socialization of high cost in industrial society. Results - As the number of network members increases, the value of the network increases explosively, and the value increases attract more members to join, resulting in more returns. Conclusion - In conclusion, network economy has changed many aspects of traditional economy, resulting in decreasing marginal cost, decreasing transaction cost in and out of enterprise organizations, and making the effect of increasing scale compensation more prominent. This is of great significance to the information construction in China.

• 전자통신동향분석
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• 제35권5호
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• pp.1-13
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• 2020

Recently, network infrastructure has evolved into a BizTech agile autonomous network to cope with the dynamic changes in the service environment. This survey presents the expectations from two different perspectives of the harmonization of network and artificial intelligence (AI) technologies. First, the paper focuses on the possibilities of AI technology for the autonomous network industry. Subsequently, it discusses how networks can play a role in the evolution of distributed AI technologies.

• 융합보안논문지
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• 제20권5호
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• pp.3-10
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• 2020

최근 인터넷 그리고 네트워크는 사회를 구성하는 필수적인 인프라로 여겨짐과 동시에 이에 대한 보안 위협 상황이 지속적으로 증대되고 있다. 그러나 네트워크에서 실제 패킷을 전송하는 스위치 단에서는 기본적으로 고정적인 룰에 의한 방화벽 혹은 네트워크 접근 제어를 통해서만 보안 위협을 대응할 수 있어, 보안 위협에 대한 효과적인 대응은 네트워크 자체에서는 극히 제한적이며, 능동적으로 대처하지 못하고 있다. 본 논문에서는 네트워크 데이터 평면 프로그래밍 언어인 P4(Programming Protocol-independent Packet Processor)를 통해 네트워크 내 모든 플로우를 P4 스위치 단에서 실시간으로 모니터링하고, 특정 보안 공격 패킷을 스위치 단에서 처리함으로써, 네트워크 단에서 분산 DDoS 공격, IP Spoofing 공격 등을 대응할 수 있는 인-네트워크 (In-Network) 보안 관리 방법을 제안한다. 또한 네트워크 사용자 혹은 보안 관리자의 운영 정책을 SDN (Software-Defined Networking) 제어기를 통해 P4 스위치에서 적용함으로써, 다양한 네트워크 응용 환경에서의 보안 요구 사항을 반영할 수 있다.

• 지능정보연구
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• 제17권4호
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• pp.131-142
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• 2011

최근 페이스북, 트위터 등 다양한 소셜 네트워크 서비스(SNS)가 등장하였으며, 많은 사용자들이 SNS를 이용하고 있다. 이러한 사용자의 증가로 인해 많은 조직들은 SNS에 관심을 가지게 되었다. 조직에서 SNS의 사용은 다양한 이점을 지니고 있다. SNS를 통해 조직들은 사용자들의 행위에 신속하고 지속적으로 반응할 수 있고, 다양한 특성을 지닌 사용자에게 쉽게 접근할 수 있으며, 타 매체에 비하여 사용자 특성이 반영된 차별화된 전략을 세울 수 있다. 또한 기업들은 SNS를 통해 상대적으로 저렴한 비용으로 활용이 가능하며, 사용자들과 양방향 소통이 가능하여 친근성과 신뢰성이 있는 관계 구축이 용이하다. 그러나 네트워크의 특성에 따라 SNS의 정보전달의 효과가 다르게 나타남에도 불구하고 조직들은 네트워크의 특성을 고려하지 않고 획일화된 방법으로 SNS를 활용하여 사용자들과 커뮤니케이션하고 있다. 따라서 본 연구에서는 네트워크에 따른 SNS의 정보전달의 효과 차이를 분석하였다. 즉 오프라인에서의 커뮤니케이션 기반으로 형성된 네트워크와 무작위로 형성된 네트워크를 생성하여, 각각의 네트워크들의 특징 차이를 분석하기 위하여 소셜 네트워크 분석을 하였다. 또한, 각각의 네트워크에서 SNS를 이용한 정보 전달 효과의 차이가 있는지 실증적으로 검증하였다. 실증 분석후 네트워크의 특성에 따라 네트워크 내 사용자들은 SNS를 받아들이는 반응이 달랐다. 따라서 조직이 효과적인 마케팅 수단으로 소셜 네트워크를 활용하기 위해서는 그 목적에 따라 네트워크의 특성을 고려하여 적절한 네트워크 형태를 구성해야 함을 도출하였다.

• Journal of Information Technology Applications and Management
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• 제10권2호
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• pp.33-41
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• 2003

It is not easy to find desired information in the world wide web. In this research, we introduce a notion of concept network that is useful in finding information if it is used in search engines that are specialized in domains such as medicine, law or engineering. The concept network that we propose is a network in which nodes represent significant concepts in the domain, and links represent relationships between the concepts. We may use the concept network constructor as a preprocessor to speci-alized search engines. When user enters a target word to find information, our system generates and displays a concept network in which nodes are con-cepts that are closely related with the target word. By reviewing the network, user may confirm that the target word is properly selected for his intention, otherwise he may replace the target word with better ones discovered in the network. In this research, we propose a detailed method to construct concept net-work, implemented a prototypical system that constructs concept networks, and illustrate its usefulness by demonstrating a practical case.

• 천문학회보
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• 제35권1호
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• pp.43.1-43.1
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• 2010

We have carried out 43-GHz VLBI test observations of the Korean VLBI Network (KVN), which has obtained the first fringes at 22/43-GHz in 2009 (a talk by Sohn, Bong Won). In collaboration with VERA (VLBI Exploration of Radio Astrometry) in Japan, we have observed Active Galactic Nuclei (AGNs) and Orion-KL at 43GHz on 22nd and 23rd December, 2009, in order to evaluate the baseline- and image-sensitivity of KVN and KVN+VERA. In this talk we report the preliminary results of the VLBI test observations of the Korean VLBI Network at 43GHz.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2000년도 제15차 학술회의논문집
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• pp.58-58
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• 2000

As many sensors and actuators are used in various automated systems, the application of network system to real-time distributed control is gaining acceptance in many industries. In order to take advantages of the network technique. however, network implementation should be carefully designed to satisfy real-time constraints and to consider network delays. This paper presents the implementation of feedback control system in Profibus-DP. Profibus-DP is a type of fieldbus protocols that are specifically designed to interconnect simple devices with fast I/O data exchange. As feedback control in profibus-DP is implemented, Network delays is found with influence of system performance. We analyze network delays in Profibus-DP into 3 reasons - dead time in Profibus interface, protocol delay, delay by asynchronization. In order to compensate the network delays, we introduce control algorithms with time delay concept. The results show that network delay can be compensated.

• 보건교육건강증진학회지
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• 제19권2호
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• pp.73-98
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• 2002

This study was carried out to investigate the relationship between social support, social network and health behaviors as surveyed by cross-sectional study in 744 rural people aged above 30 of a community dwelling sample of one county for 6 days of July in 2000. Objectives of this study was in order to establish an effective health promotion. The sample was accrued by face to face interview of direct visiting from clustered sampling method. Interview was conducted by trained medical students with the questionnaire consisted of socio-demographic data, health behavior, social support and social network based on previous literature. The summarized results were as follows: 1. There were significant difference in the level of social support and social network by general characteristic variables except occupation and residency type(p〈0.05). 2. There were significant difference in knowledge about hypertension, smoking status, status of physical exercise, diet patterns by social support and social network in spite of variation of social support and social network subconcept(p〈0.05). And there were significant difference in alcohol drinking status, body weight control and diet pattern according to level of social network(p〈0.05). But smoking status by social support and network results opposite direction(p〈0.05). 3. There were no regular or consistent result in the relationship between social support, social network and health behavior. 4. Major predictors for health behavior on the multiple logistic regression that included general characteristic, social support and social network were age, instrumental social support and worry about health. Significant variables of multiple logistic regression for health behavior that included social support(instrumental and emotional) and social network were instrumental social support and social network. These results suggest that only a instrumental element and social network may be associated with health behavior. Inconsistent with prior research in these some item, a positive consistent relationship was not found between social support, social network and health behavior. So the study should be replicated to determined the reliability of our findings.

• 정보처리학회논문지C
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• 제19C권2호
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• pp.149-152
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• 2012

이동통신 로밍(roaming)을 하는 경우 외부망(visited network)의 사용 요금이 홈망(home network)에 비해 높게 책정된다. 따라서, 단말이 외부망에 위치하다가 본인의 홈망으로 복귀했는데도 불구하고 여전히 외부망에 등록되어 있는 경우, 사용자의 의도와 무관하게 높은 통신요금이 책정되는 경우가 있다. 이와 같은 문제점은 같은 지역에 여러 사업자의 망이 중복되어 설치된 경우에 자주 발생하는데, 실례로 폴란드 이동통신망 사례를 들 수 있다. 이에 본 논문에서는 이동통신 로밍 사용자의 빠른 홈망 복귀를 위한 망탐색 알고리즘을 제안한다. 제안 기법은 3GPP 규격의 망탐색 동작을 따르면서 단말에 저장된 망정보 DB를 활용하여 홈망을 탐색하는 방식이다. 제안 기법의 성능평가를 위해 실제 단말기와 실험장비를 이용하여 폴란드 사업자 환경을 가상적으로 구축하였다. 실험 결과, 제안 방식이 기존 3GPP 규격 방식에 비해 홈망 복귀시간을 3~60분까지 단축시킬 수 있음을 확인하였다.

• Journal of Information Technology Applications and Management
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• 제9권3호
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• pp.97-111
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• 2002

This paper attempts to provide an overview of relationship between the characteristics of the network and competitive strategies. We review the theoretical background of the efficiency of network, which Is very important for the network-based industries. Network externality, positive feedback effects, bandwagon effects, economies of scale, economies of scope in network-base businesses are reviewed. Various network situations, including interconnection, and strategies are also discussed. In this purpose, simple but meaningful examples and cases are used to show the economic goals and means of network competition strategies. We try to link network strategies to the generic strategies and coopetition suggested by Porter and by Brandenburger and Nalebuff respectively. Since this study is an exploratory research, further studies on more complex network situation in the real work can be executed with taking advantage of this effort.