• Journal of Korea Society of Industrial Information Systems
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• v.21 no.5
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• pp.55-72
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• 2016

This study aims at providing a methodology for retaining international technology competitiveness, marketable industry, and sustainable promising technology in a field of new growth engine industry such as national unmanned aerial vehicle industry. We draw a result by analysing with tools such as KrKwic, Excel, NetMiner, presenting methods of a Social Network Analysis, sub-group analysis, and cognitive map analysis based on patent data in a field of unmanned aerial vehicle industry. As a result, some future promising technologies are prospected as what worths concentrated investment, such as 'pilot control tech', 'identification of friend or foe tech'.

• Nuclear industry
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• v.24 no.3 s.253
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• pp.9-15
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• 2004

• Journal of Korea Society of Industrial Information Systems
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• v.15 no.3
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• pp.67-75
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• 2010

Network reprogramming is a technology that allows several sensor nodes deployed in sensor field to be repaired remotely. Unlike general communication in sensor network where small amount of data is transferred, network reprogramming requires reliable transfer of large amount of data. The existing network reprogramming techniques suffers high cost and large energy consumption to recover data loss in node communication. In this paper, a cluster based network reporgramming scheme is proposed for sensor network. It divides sensor field into several clusters and chooses a cluster header in charge of data relay to minimize duplicated transmission and unnecessary competition. It increases reliability by effective error recovery through status table.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.23 no.12
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• pp.1673-1678
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• 2019

There are various networks and communication methods are used in industrial communication. Enterprises need to convert communications between industrial devices and networks for production line expansion, factory upgrades, network segmentation, and SI. This requires designers manufactured by many manufacturers to provide communication equipment for data or protocol conversion in order to connect and transmit various other mechanical devices to the network. This paper designed industrial communication gateway that can support the transformation of industrial communication protocol using multi-layered communication module. Industrial communication gateways have a structure that connects individual communication modules using RS485 communication to multiple layers. Each communication module consisted of analog and digital data card, LAN, and CAN-enabled card. The main board processor used Atmega micro-processor, and the RS485 slot was placed to have a multi-layer communication module structure. These additive layer type communication modules support analog and digital I/O functions and LAN and CAN for wide use in industrial communication control and monitoring.

• Journal of the Economic Geographical Society of Korea
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• v.15 no.2
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• pp.274-291
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• 2012

Since the advent of the internet as representative of the development of information communication technology (ICT), information transfer forms have changed rapidly these days. In the new techno-economic paradigms, I would ultimately consider how spatial structures of a knowledge-based service industry have been altered dynamically. To delve into this background, this study conducts an empirical case study of the internet advertising industry, particularly, among the whole advertising industry. Therefore, the primary objective of this study is to identify dynamic characteristics of spatial networks among actors for knowledge creation in Korea's internet advertising industry. In addition, it also is to analyze the formative elements of spatial networks which would have an influence on constructing the space of new economic activities. There are multilateral approaches. This research is classified into types of actors such as inter-firm, intra-firm, and firm-customer, and categorized according to spatial ranges such as local, regional, global levels. In the meanwhile, formative factors of the spatial networks could draw a conclusion from two aspects: inter-firm networks in the process of business in the internet advertising industry, and individual networks in the nonoccupational aspect. Accordingly, the results of this study suggest that actors' networks of two perspectives would make mutually complementary relationships and create new relational spaces in the digital economy.

• Journal of the Korean Association of Geographic Information Studies
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• v.24 no.3
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• pp.58-72
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• 2021

In July 2021, UNCTAD classified Korea as a developed country. After the Korean War in the 1950s, economic development was promoted despite difficult conditions, resulting in epoch-making national growth. However, in order to respond to the rapidly changing global economy, it is necessary to continuously study the domestic industrial ecosystem and prepare strategies for continuous change and growth. This study analyzed the industrial ecosystem of the automobile industry where it is possible to obtain transaction data between companies by applying complexity spatial network analysis. For data, 295 corporate data(node data) and 607 transaction data (link data) were used. As a result of checking the spatial distribution by geocoding the address of the company, the automobile industry-related companies were concentrated in the Seoul metropolitan area and the Southeastern(Dongnam) region. The node importance was measured through degree centrality, betweenness centrality, closeness centrality, and eigenvector centrality, and the network structure was confirmed by identifying density, distance, community detection, and assortativity and disassortivity. As a result, among the automakers, Hyundai Motor, Kia Motors, and GM Korea were included in the top 15 in 4 indicators of node centrality. In terms of company location, companies located in the Seoul metropolitan area were included in the top 15. In terms of company size, most of the large companies with more than 1,000 employees were included in the top 15 for degree centrality and betweenness centrality. Regarding closeness centrality and eigenvector centrality, most of the companies with 500 or less employees were included in the top 15, except for automakers. In the structure of the network, the density was 0.01390522 and the average distance was 3.422481. As a result of community detection using the fast greedy algorithm, 11 communities were finally derived.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.11 no.1
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• pp.157-162
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• 2007

With the success of wireless technologies in consumer electronics, standard wireless technologies are envisioned for the deployment in industrial environments as well. Industrial applications involving mobile subsystems or just the desire to save cabling make wireless technologies attractive. Nevertheless, these applications often have stringent requirements on reliability and timing. In wired environments, timing and reliability are well catered for by fieldbus systems. When wireless links are included, reliability and timing requirements are significantly more difficult to meet, due to the adverse properties of the radio channels. In this paper, we thus discuss some key issues coming up in wireless fieldbus and wireless industrial communication systems.

• Annual Conference of KIPS
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• 2010.11a
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• pp.898-901
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• 2010

최근 소셜 네트워크 서비스가 새로운 커뮤니케이션의 패러다임이 되었다. 트위터 등의 마이크로블로 그 서비스 경우 사용하기 편리하고 단순하여 많은 사용자가 존재 한다. 그리고 주제가 특정되어 있지 않아 어떠한 정보도 공유 될 수 있기 때문에 많은 양의 정보가 공유되고 있다. 하지만 기존의 소셜 네트워크 서비스에서 사용자 간의 관계 형성은 상호 간의 신청과 허용이 이루어져야만 가능하기 때문에 관계를 형성 하고 정보를 공유 하는데 있어 이런 점은 다소 불편하게 작용 된다. 또한 다양한 주제의 정보가 다수 존재하기 때문에 사용자에게 불필요한 정보까지 노출이 되어 사용자가 원하는 정보를 찾는데 어려우며 않은 시간이 낭비 되는 문제점이 있다. 그리고 학교 자체적으로 운영 되고 있는 커뮤니티 사이트의 경우 학생들을 위한 시스템이지만 불편한 인터페이스, 낮은 접근성, 늦은 피드백 등으로 학생들의 참여도가 낮고 공유 되고 있는 정보의 양이 적은 문제점이 있다. 본 논문에서 기술하는 시스템은 사용자가 수강하는 특정 강의를 기반으로 사용자 간의 관계를 자동형성 한다. 그러므로 정보를 찾는데 있어 선행 되어야 할 많은 작업에 소요 되는 노력과 시간을 줄여준다. 또한, 강의 기반의 자동 관계 형성으로 인하여 공유되고 있는 많은 정보들 중에서 사용자가 원하는 정보를 찾기가 간편하다. 본 논문이 제안하는 시스템은 이미 형성 된 관계 혹은 조직에서 사용할 수 있는 소셜 네트워크 서비스로 발전될 것으로 사료 된다.

• Proceedings of the Korea Technology Innovation Society Conference
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• 2017.05a
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• pp.335-356
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• 2017

본 연구에서는 4차 산업혁명에서 가장 중요하게 대두될 수 있는 융합R&D정책에 대해 소셜 네트워크 분석을 통해 새로운 대안을 제시하려고 한다. 연구장비, 연구성과의 자료들을 활용하여 연구장비 네트워크 분석을 실시하여 융합R&D의 특성 및 구조분석을 실시하며, 연구장비 공동활용 및 다학제 협력연구를 통해 창출될 수 있는 새로운 융합R&D정책에 대한 접근을 시도하려고 한다. 나아가, 연구개발과 사업화 사이에서 더욱 중요한 역할을 할 수 있는 분석과학기술에 대한 정책적 플랫폼 구축관점 대한 시사점을 찾아내려고 한다. 이를 위해 계량적 접근과 비계량적 접근을 동시에 활용하여 연구주제에 대한 타당성을 확보할 것이며, 앞으로 미래산업 및 유망기술에 대한 전략적 선별에 있어 일부 근거를 제시해줄 수 있을 것이다. 이러한 연구결과를 통해 우리나라 기초과학 및 기초과학인프라에 대한 발전적 정책방안과 융합연구 및 융합연구의 사업화에 대한 정책적 관점을 제시하도록 한다. 분석자료는 한국기초과학지원연구원(KBSI) 현황자료를 중심으로 살펴보며, 분석방법은 소셜네트워크분석(SNA:Socail Network Analysis)을 활용한다.

• Proceedings of the Korea Society for Industrial Systems Conference
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• 2008.10b
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• pp.623-628
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• 2008

소프트웨어 업 데이트를 위한 업데이트 코드 전파 기법은 매우 중요한 기술 중 하나이다. 본 논문에서는 네트워크 코딩 기법을 이용한 새로운 업데이트 코드 전파 기법을 제안한다. 제안된 코드전파 기법은 기존의 파이프라이닝 방식에 비해 데이터 송수신 횟수에 있어 약 49%의 성능 향상을 보인다. 따라서 본 논문에서 제안한 코드 업데이트 기법을 사용할 경우 속도, 에너지, 네트워크 혼잡도 측면에서 효율적인 소프트웨어 업데이트를 수행할 수 있다. 뿐만 아니라 본 논문에서 제안한 방식은 네트워크 코딩의 overhearing 문제점인 원본 데이터의 분실이나 데이터의 미 수신시 발생하는 디코딩문제를 미리 정의된 메시지를 이용, 방지함으로써 신뢰성있는 데이터 전송을 가능하게 한다.