• 디지털융복합연구
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• 제7권1호
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• pp.157-164
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• 2009

This research focuses on entrepreneurial orientation(EO) of technology spin-offs as they are expected to reduce the gap between their technology and the market. Entrepreneurial orientation is an organizational activity or process that redistributes or combines resources in an innovative way and takes risk to create new values. It helps improve the level of organizational innovation to deal with uncertainty. An empirical study was performed to analyze the EO of spin-offs established by members of university faculties and research institutes in Korea. Antecedent variables to EO are hypothesized to include public policy for university faculty members and researchers at research institutes, the relationship with incubating organizations, and the level of social networking with other firms. The EO and technological performance relationships are also hypothesized. Data from a total of 121 spin-off organizations were collected and a series of multiple regressions were performed. The performance variable included both technological performance, such as the number of newly marketed products and new technology and subjective performance, such as the level of satisfaction with sales amount and profitability. Several important conclusions were drawn from this study. First, while government policy is not related to EO, the policy of a university or a research institute has a significant effect on the level of innovativeness. Second, a high percentage of human resources applied at the incubating organization results in a negative effect on risk taking. The level of cooperation with the incubating organization too is not related to Entrepreneurial Orientation. Third, the intensity of cooperative networking with other firms has a significant effect on risk-taking. Network relationship with government related organizations is not related to Entrepreneurial Orientation. This study analyzes the importance and role of policy of the university and research institute and networking with other firms to improve EO. It also suggests that a high composition of human resources at the incubating organization has a negative relationship with EO.

• 한국정보시스템학회지:정보시스템연구
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• 제16권4호
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• pp.269-286
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• 2007

Business Incubators(BI) guide starting-up firms through their growth process and as such constitute a strong instrument to promote innovation and entrepreneurship. This study classified the incubating services into communication, physical facilities, human resources, marketing, financial, legal, technology, and networking services. The research problem was tested with data from 103 BI centers and 561 starting-up firms in BI. The results from the survey are as follows: First, incubating services to important for the BI's performance are networking, communication, human resources, physical facilities, and marketing services. Second, the incubating services to satisfy on the firms in the BI are financial, human resources, marketing, communication, networking, and physical facilities services. Third, there are the differences between BI center and the firms in the BI by each incubating service except communication service. Finally, the results of MSEM(Multi-group Structured Equation Modeling) indicate the communication and networking services are more strongly affected to the performance at the BI centers. Vice versa, the marketing and financial services are more strongly affected to the satisfaction at the firms in the BI centers. Starting-up firms in business incubators showed strong desire to receive better support in such fields as marketing and financial services. BI needs to recognize such demand and provide improved services in such areas. Starting-up firms did not recognize the utility and importance of services in networking with other firms and supporting human resources. BI needs to promote services in such areas. Concerning communication services and physical facility support service, both BI and starting-up firms showed satisfactory levels of services.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제11권1호
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• pp.484-510
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• 2017

Network security is rapidly developing, but so are attack methods. Network worms are one of the most widely used attack methods and have are able to propagate quickly. As an active defense approach to network worms, the honeynet technique has long been limited by the closed architecture of traditional network devices. In this paper, we propose a closed loop defense system of worms based on a Software-Defined Networking (SDN) technology, called Worm-Hunter. The flexibility of SDN in network building is introduced to structure the network infrastructures of Worm-Hunter. By using well-designed flow tables, Worm-Hunter is able to easily deploy different honeynet systems with different network structures and dynamically. When anomalous traffic is detected by the analyzer in Worm-Hunter, it can be redirected into the honeynet and then safely analyzed. Throughout the process, attackers will not be aware that they are caught, and all of the attack behavior is recorded in the system for further analysis. Finally, we verify the system via experiments. The experiments show that Worm-Hunter is able to build multiple honeynet systems on one physical platform. Meanwhile, all of the honeynet systems with the same topology operate without interference.

• 공업화학
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• 제29권1호
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• pp.112-116
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• 2018

주조공정 중 주형제조 시 점결제로 사용되는 silicate계 바인더의 주요원료 중 하나인 물유리와 첨가제(Si, 알칼리 금속)의 혼합특성을 살펴보았다. 물유리와 첨가제 그리고 비율에 따라 제조된 혼합물은 FT-IR분석을 통해 분자결합구조를 살펴보았으며, 점도측정으로 분자구조와의 상관관계를 비교하였다. 물유리에 Si 소스의 제공은 물질 내 Si 망상결합을 촉진시켜 점도는 증가하였고, 알칼리 금속을 첨가하였을 경우에 물유리의 Si 망상결합을 억제하여 점도가 낮아졌다. 물유리와 리튬 실리케이트(lithium silicate, LS)의 혼합물의 점도는 LS의 함량이 20 wt% 이하에서는 LS의 함량이 증가할수록 증가하였지만, 20 wt%를 초과할 경우 점차 낮아졌다. 물유리에 KOH를 첨가함으로써 점도를 낮출 수 있었으며, 콜로이달 실리카(colloidal silica, CS) 또는 potassium methyl siliconate (PMS)와의 혼합을 효과적으로 이용하는 데 이용할 수 있다.

• 디지털융복합연구
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• 제3권1호
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• pp.89-113
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• 2005

The primary purpose of this study is to suggest the governmental strategies for enhancing the capacity of the culture technology industries. By reviewing the past relationships between the government and industry in the process of industrialization, we have arrived at some of the lessons about 'positive' or 'negative' effects on the relationships. The newly revised government and high-technology-based industry relations should be reformed in order to make the industries efficiently operated and competitive especially internationally. We have suggested a conceptual framework for the relationship by considering the policy community in consideration of the characteristics of the industries. The policy community is consisted of four dimensions. each of which, we considered were specifically, (1) research institutes for collecting data, market analysis, and gathering informations for the industries, (2) financial institutions, (3) professional groups for advising and sharing the technologies to the industries, and (4) education institutes for providing skilled personnels. Because these policy community does not effectively interrelate each other, we suggested that government should play pivotal roles in connecting these four dimensions of the policy community. The policy networking is necessary for the industries to be more effectively work together. The roles of government then provide some of the ways in which the policy community working interactively. By way of conclusion, we suggest some of the ways in which the government make the industries much more productive and competitive in the world markets.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2007년도 제38회 하계학술대회
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• pp.738-739
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• 2007

This paper presents the sensor networking technologies and the process of selecting the suitable technology for the transmission line and facilities monitoring system.

• 정보통신설비학회논문지
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• 제9권3호
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• pp.102-106
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• 2010

Recently process industries from oil and gas procedures and mining companies to manufactures of chemicals, foods, and beverages has been exploring the USN (Ubiquitous Sensor Networks) technology to improve safety of production processes. However, to apply the USN technology in the large-scale plant industry, reliability and security issues are not fully addressed yet, and the absence of the industrial sensor networking standard causes a compatibility problem with legacy equipment and systems. Although this situation, process industry such as energy plants are looking for the secure wireless plant solution to provide detailed, accurate safety monitoring from previously hard-reach, unaccordable area. In this paper, SPSF (Smart Plant Safety Framework based on Reliable-Secure USN) is suggested to fulfill the requirements of high-risk industrial environments for highly secure, reliable data collection and plant monitoring that is resistant to interference. The SPSF consists of three main layers: 1) Smart Safety Sensing Layer, 2) Smart Safety Network Layers, 3) Plant Network System Layer.

• 한국정보과학회논문지:정보통신
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• 제32권1호
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• pp.110-122
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• 2005

블루투스(Bluetooth)는 휴대폰을 중심으로 하여 다양한 디지털 기기 사이의 무선 인터페이스를 제공할 수 있는 기술로 가능성을 인정받아 왔다. 특히 블루투스에서 지원되는 스캐터넷(Scattemet)이라는 네트워크의 형태는 PAN(Personal Area Network)과 같은 동적인 Ad-hoc 네트워크 환경에서 블루투스가 지원되기 위해서는 필수적인 요소이다. 하지만 기존의 블루투스 스캐터넷 관련 연구들은 노드들이 수시로 추가 혹은 이탈하는 동적인 네트워크 환경을 거의 고려하지 않고 있다. 본 논문에서는 동적인 네트워크 상황을 고려하여 블루투스 스캐터넷 내부에서 노드가 이탈하였을 경우 이를 재형성하기 위한 알고리즘을 제시하였다. 본 알고리즘은 다양한 스캐터넷 형태와 무관하게 적용될 수 있는 범용 알고리즘이며, Inquiry 과정이 생략된 채 Page 과정만으로 빠르게 네트워크가 복구되는 특성을 지닌다. 또 노드의 형태에 따라 복구 마스터/슬레이브를 지정하여 작성되는 복구 노드 벡터(Recovery Node Vector)에 따라 동작한다. 또 본 논문에 제시한 알고리즘은 상용 하드웨어에 적용이 가능한 구체적인 알고리즘으로, 실제 상용 하드웨어 실험을 통해 그 성능을 평가하고 발생되는 문제점을 수정하였다. 실험을 통해 제안한 알고리즘의 재형성 지연 시간은 Inquiry 과정이 포함된 경우의 23~60% 정도로 단축된 결과를 얻었고, 97% 이상의 복구 성공률을 보였다.

• 한국산학기술학회논문지
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• 제19권3호
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• pp.75-82
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• 2018

최근 신흥개발국들은 한국형 경제개발 정책에 관심을 갖고 한국의 지역혁신 모델을 접목하고자 노력하고 있다. 한국도 신흥국의 수요에 맞추어 지역혁신 모델을 수출하고 해당국과 경제협력을 강화하는데 관심이 있다. 본 연구는 신흥국에 대한 한국형 지역혁신모델 전수사업을 분석하고 정책을 제시하고자 한다. 이를 위해 태국, 키르키즈공화국, 베트남, 멕시코 등 신흥 4개국의 혁신기관 실무자들이 공동학습 - 네트워크- 상호작용 활동에 참여하는 행태를 표적집단면접법에 의해 분석하였다. 한국의 혁신기관에서 제공하는 전수사업에서 현지국가 혁신주체의 초기 활동을 분석한 결과, 전수사업의 연수 시간과 이후 현지인들에 의한 자체 공동학습 참여율의 관계는 가장 밀접한 상관관계 (0.975)가 있음을 발견하였다. 그러나 이들의 자체 공동학습과 현지의 네트워크 참여율의 상관계수는 다소 낮아 (0.667), 현지에서 공동학습을 네트워크로 연결하는 정책이 필요하다. 네트워크 참여율과 혁신주체의 상호작용 참여율은 높은 상관관계 (0.950)로 나타나, 네트워크 구축이 지역혁신 모델의 관건이라는 것을 보여준다. 본 연구는 교육과 컨설팅 형태의 연수보다는 현지의 혁신 네트워크 활동을 촉진하는 사업을 추천한다. 본 연구는 충남테크노파크의 사례와 같이 혁신주체들이 스스로 학습 네트워크를 구축하여 지역에 맞는 혁신모델을 창출하고 지역혁신플랫폼을 직접 운영하는 단계까지 추진하는 전수사업 정책을 제안한다.

• 대한기계학회논문집A
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• 제38권8호
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• pp.893-898
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• 2014

펄스 레이저를 적용한 실버나노와이어의 접합 영향이 연구되었다. 조사된 레이저 펄스 에너지는 실버나노와이어 네트워크에서 실버나노와이어간에 접합을 유도하였으며 이로 인해 투명 기저위의 실버나노와이어 네트워크 박막에 전기 저항값을 조절할 수 있었다. 특히 이러한 나노네트워크에서의 접합은 개별 나노와이어의 접촉점의 형태로 발생되었고 접합의 효과는 전체 실버나노와이어 네트워크의 전기저항 변화 측정으로 평가하였다. 또한 레이저 빔 펄스폭 및 레이저 평균 출력이 나노와이어 접합 비율 평가에 적용되어 연구되었다. 실버나노와이어 네트워크의 광학 특성도 관찰되었으며 이에 레이저 공정 요소 대비 효과도 연구되었다. 최적화된 레이저빔 적용 재료처리는 특화된 국부 재료 특성 개선에 장점을 보였다. 펄스 레이저를 이용한 실버나노와이어의 재료처리의 적용과 그 효과에 대해서도 논의한다.