• KIEE International Transactions on Electrophysics and Applications
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• 제3C권4호
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• pp.130-135
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• 2003

This study describes neural network based dissolved gas analysis using composition patterns of gas concentrations for transformer fault diagnosis. DGA samples were gathered from related literatures and classified into six types of faults and then a neural network was trained using the DGA samples. Diagnosis tests were performed by the trained neural network with DGA samples of serviced transformers, fault causes of which were identified by actual inspection. Diagnosis results by the neural network were in good agreement with actual faults.

• 산업경영시스템학회지
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• 제39권3호
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• pp.156-169
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• 2016

The objective of this study is to investigate patent trends of Daegu city which tries to introduce environment friendly energy and to develop new technology or new industry sprung from technology convergence on smart decentralized energy technology and other technologies. After applying network analysis to corresponding groups of technology or industry convergence, strategy for future energy convergence industry is provided. Patent data applied in Daegu city area are used to obtain research goal. The technology which contains several IPC codes (IPC Co-occurrence) is considered as a convergence technology. Path finder network analysis is used for visualizing and grouping by using IPC codes. The analysis results categorized 13 groups in energy convergence industry and reclassified them into 3 cluster groups (Smart Energy Product Production Technology Group, Smart Energy Convergence Supply Technology Group, Smart Energy Indirect Application Technology Group) considering the technical characteristics and policy direction. Also, energy industry has evolved rapidly by technological convergence with other industries. Especially, it has been converged with IT industry, and there is a trend that energy industry will be converged with service industry and manufacturing industry such as textile, automobile parts, mechanics, and logistics by employing infrastructure as well as network. Based on the research results on core patent technology, convergence technology and inter-industry analysis, the direction of core technology research and development as well as evolution on decentralized energy industry is identified. By using research design and methodology in this study, the trend of convergence technology is investigated based on objective data (patent data). Above all, we can easily confirm the core technology in the local industry by analyzing the industrial competitiveness in the macro level. Based on this, we can identify convergence industry and technology by performing the technological convergence analysis in the micro level.

• Journal of information and communication convergence engineering
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• 제7권1호
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• pp.13-18
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• 2009

The robotics industry, that is the major industry of the future and one of the new growth power, is actively studied around ETRI, that is the leading under state-run research institute of the advanced technique of U.S. and Japanese and knowledge economy part. And positive and negative and academic circles, the research institute, and the industrial circles communally pursue the intelligent service robot enterprise of a network-based called URC. This network-based intelligent robot does the RUPI2.0 platform and URC environment by the base. Therefore, a stability need to be enhanced in the through this near future when the research for the preexistence vulnerability analysis and security request is needed than the commercialized network-based intelligent robot in order to implement the network-based intelligent robot. Thus, in this paper, we propose the efficient authentication Framework which is suitable for the URC environment.

• 펄프종이기술
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• 제37권4호통권112호
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• pp.44-51
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• 2005

Paper mills use and discharge lots of water. And so now the papermaking industry could be classified into major water consuming industry In order to analyze the process water network and to establish the mass, water balance of duplex board mill, computer aided simulation was made using water pinch method. Based on the pinch analysis results, reuse of process water, after regenerating by microfilter as much as $140\;m^3/hr$, could be suggested without significant accumulation of contaminants in process water. According to this suggestion about $3000\;m^3/day$ of recycled process water could be sub stituted by regenerated water and consequently $30\%$ of energy cost is expected to be reduced.

• 대한산업공학회지
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• 제40권6호
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• pp.618-627
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• 2014

This paper aims to construct and analyze the domestic collaborative research network in industrial engineering. Using co-authorship information contained in the papers published in the two journals of the Korean Institute of Industrial Engineers, the collaborate research network at the institutional level is constructed. The core institutions in the network are identified by means of the centrality indexes of social network analysis. In addition, the five types of roles of the institutions in industry-university-institute cooperation are examined through brokerage analysis: coordinator, consultant, gatekeeper, representative, and liaisons. The findings are expected to be fruitfully utilized in formulation of R&D strategy of relevant organizations and technology policy making for promoting collaborative research in industrial engineering.

• International journal of advanced smart convergence
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• 제11권2호
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• pp.95-101
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• 2022

The development of the 4th industry has increased social media, and the rise of COVID-19 has stimulated non-face-to-face services. People's consumption patterns are also changing a lot due to non-face-to-face services. In this paper, food content keywords are derived through social network-based semantic network analysis, emotions are analyzed, and keywords applied to food recommendation platforms are input. We collected food, influencer, and corona keyword analysis data through Textom. A lot of research has been done through online reviews of existing influencer content. However, there is a lack of research on keyword sentiment analysis provided by influencers rather than consumers and research perspectives. This paper uploads language and topics derived through online reviews of existing publications and subscribers, and goes beyond the limits used in marketing methods. By analyzing keywords that influencers suggest when uploading content, you can apply data that applies them to food recommendation platforms and applications.

• 산업공학
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• 제20권3호
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• pp.395-406
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• 2007

In the telecommunication industry, estimation of the cost of network facilities is very important since depreciation cost of the facilities accounts for a large portion of the product cost. Moreover, cost estimation in the industry becomes more difficult because of increasing indirect cost upon digital convergence, expanding multi-purpose facilities, complexity of service product, etc. Nevertheless, not much seem to have been done in improving estimation methodology of the cost of network facilities. As a result, the quality of cost information on network facilities has deteriorated, and now even decision-makers in the industry dismiss the information. Recently, two major telecommunication companies adopted a new network cost estimation method to deal with the issue. In this paper, we study the concept of new cost estimation method and the procedure to develop and apply it. We also suggest the method to carry out the cost allocation using Matlab which is more efficient and time-saving than other commercial cost calculation packages.

• 한국경제지리학회지
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• 제18권1호
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• pp.103-114
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• 2015

이 연구는 중국 와인 산업의 지식창출에서 공동 특허 출연자들 간의 네트워크의 성장과 특성을 고찰하였다. 특히 산동지역을 중심으로 형성된 와인산업에 관한 정부의 지원이 시작된 2006년 전후의 네트워크 형성과정을 살펴보았다. 첫째, 중국 와인 산업의 네트워크는 정부지원을 통한 산학연연계가 활발히 성장하고 있다는 점이다. 특히, 산동지역은 연구소 중심으로 발전하고 있다. 둘째, 네트워크 형성과정에서 공간적인 특성을 살펴보면, 지리적으로 먼 내몽골 등과의 연계를 통해 네트워크 확장이 일어나고 있다. 이는 산동지역이 중국내에서도 와인과 관련된 연구중심의 형성하고 있음을 보여준다. 셋째, 산동지역을 중심으로 한 주체별 네트워크 형성과정을 살펴 본 결과 허브형에 가까운 모습을 보이고 있음을 알 수 있다. 따라서 앞으로 산동지역은 대기업의 자금과 정부의 지원정책을 기반으로 하고 있으며, 특히 연구중심으로 발전하고 있어 더욱 그 역할이 강화될 것으로 예측된다.

• Asian Journal of Innovation and Policy
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• 제4권2호
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• pp.242-262
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• 2015

The relationship between geographical proximity and academics' formal and informal knowledge-transfer activities in the network is analyzed with a mixed research method. With social network analysis as a basis, we have explored the networks between academics and firms in the 16 regions of South Korea. The result shows Seoul and Gyunggi are identified as central nodes, meaning that the academics in other regions tend to collaborate with firms in these regions. An econometric analysis is performed to confirm the localization of knowledge-transfer activities. The intensity of formal channels measured by the number of academic papers is negatively, but significantly associated with the geographical proximity. However, we have not found any significant relationship between the formality of the channels and geographical proximity. Possibly, the regional innovation systems in South Korea are neither big enough nor strong enough to show a localization effect.

• 한국경제지리학회지
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• 제13권4호
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• pp.710-726
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• 2010

이 논문의 목적은 산업발전을 위한 불리한 입지여건을 지닌 강원도가 산학연관 협력적 네트워크를 통하여 POSCO 를 유치한 전략을 고찰하는 데 있다. 그러나 최근 POSCO의 마그네슘 제련공장을 강릉에 유치하게 되면서 강원도의 산업 발전은 새로운 국면을 맞이하고 있다. 강원도의 POSCO 마그네슘 제련공장 유치의 성공 요인은 다음과 같다. 첫째, 지자체와 지방연구소, 투자 대상 기업의 기술연구소, 지역의 연관 기업이 상호 협력적으로 역할 분담, 둘째, 지자체와 투자대상 기업, 연구소의 상호 배려에 입각한 합리적인 제안을 통해 형성한 신뢰, 셋째, 기업에 대한 철저한 분석을 토대로 수립한 기업 유치 전략, 마지막으로, 전방산업의 수요시장의 확보 등을 들 수 있다.