• Knowledge Management Research
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• v.23 no.4
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• pp.177-205
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• 2022

Small- and medium-sized enterprises (SMEs) have strong incentives to engage in open innovation to enhance innovation efficiency and effectiveness due to their 'liability of smallness.' Previous research examined the performance effects of various open innovation practices, but whether coupled open innovation practices positively affect SMEs' firm performance is somewhat controversial. To resolve the issue, this study examined the effects of coupled open innovation activities on SMEs' firm performance using Heckman's two stage model to control endogeneity of the firms' self-selection bias in open innovation engagement. This study used the Korean Innovation Survey (KIS) 2020 collected by the Science and Technology Policy Institute (STEPI), and tested the effects of SMEs' coupled open innovation activities, R&D and non-R&D cooperation, on their innovative and financial performance indicators. The results showed that SMEs' R&D cooperation positively affects the new-to-market (NTM) product innovation only. Moreover, SMEs' non-R&D cooperation has positive effects on the product innovation, business process innovation, new-to-the-market product innovation, and new-to-firm (NTF) product innovation. However, the results showed that both R&D and non-R&D innovation cooperation activities have no significant effects on SMEs' financial performance indicators. This study contributes to research on SMEs' open innovation and provides insights for SMEs' managers and policymakers.

• Proceedings of the Korea Multimedia Society Conference
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• 2001.06a
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• pp.449-452
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• 2001

가상공간에서 발생하는 아바타 상호작용 유형과 인상형성에 영향을 주는 요인들을 분석하여 아바타간의 사회적 관계도(DOSR)를 정의하였다. 아바타간 사회적 관계도는 가상공간에서 커뮤니티 형성에 효율성을 제공하는 요소들로서 이루어져 있으며, 사용자의 가중치를 적용하여 산출된다. 본 논문에서는 사회적 관계도를 활용할 수 있는 방법에 대해서 제시하였고, 사회적 관계도를 이용한 아바타 시각화로 인지(Awareness)의 향상에 중점을 두어 시스템을 구현하였다.

• Proceedings of the Korea Technology Innovation Society Conference
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• 2005.05a
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• pp.18-32
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• 2005

본 연구는 IT 기업의 R&D활동의 성과를 파악하는 것을 목적으로 한다. 공공 R&D의 성과에 대한 연구는 상당부분 진척이 이루어졌으나, 경제의 주체인 민간기업의 R&D 활동에 대한 연구는 부족한 실정이다. 이 연구목적을 위하여, 기업의 재무자료를 이용하여 R&D투자액을 집계하였으며, IT기업의 경영성과도 분석하였다. 분석한 결과를 간단하게 요약하면, 다음과 같다. 첫째, IT기업은 대기업의 R&D투자 비중이 $93.6\%$에 달한다. IT R&D 투자 상위 10개 기업이 IT 산업에서 매출액의 $71\%$, 종업원의 $61\%,$ R&D 투자의 $87\%$를 차지한다. 둘째, 기업의 투자활동은 선택과 집중의 원칙에 따라 R&D 투자에 주력하는 경향이 강해졌다. 유형자산투자는 급격한 감소를 보이는 반면, R&D투자는 증가하고 있다. 셋째, IT 중소기업의 R&D투자는 한계가 있을 수밖에 없다. 본 연구에서 나타난 분석결과의 시사점을 보면, IT 중소기업의 R&D 투자는 한계가 있을 수밖에 없다. 따라서 중소기업의 R&D투자의 효율성을 높여주는 한편, 미래성장의 seed에 대한 준비와 단기 개발연구를 통해 기업의 수익에 기여할 수 있도록 해야 할 것이다. 또한 IT 대기업과 중소기업의 R&D에 대한 효율적인 네트워크를 구축하는 것도 IT기업의 활성화를 위해 요구된다.

• Journal of Korea Technology Innovation Society
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• v.17 no.3
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• pp.604-628
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• 2014

We analyse the impact of R&D cooperation on Industrial R&D programs of Government (Ministry of Trade, Industry & Energy, MOTIE), specially performance differentiating between type of R&D partners, type of R&D project leader organizations. And considering five performance measures: paper, patent, technology transfer, commercialization, new employment. Using data on a large sample of post-performance survey of MOTIE in Korea (2013), we examine the impact of R&D cooperation in 2008-2012. The method of analysis is binary logistic regression models operated by SPSS. The results of this study are follows; the performance is statistically significantly different between type of R&D partners, type of R&D project leader organizations on R&D cooperation. Specially, when a private enterprise cooperate with non-profit institutions, performance has a greater success of paper, patent, new employment. On the other hand, when a private enterprise cooperate with a private enterprise cooperate, performance decrease success of paper, technology transfer. Lastly, when non-profit institutions cooperate with a private enterprise, performance has a greater success of patent, technology transfer.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.28 no.1A
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• pp.25-33
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• 2003

We derive the outage probabilities for the Erlang capacity and link margin based on handoffs in the reverse link of a CDMA system of 14.4 kbps/1.9 GHz band, calculate them with the same parameters, and then with the maximum realizable Erlang capacity analyze newly the cell coverage in different areas by the COST-231 model If it decreases from 5 % to 2 % in case of $E_b/N_0$=5 dB under a soft handoff, the result shows a very reliable link with additional increment of 0.88 dB in the margin and a high quality of service within the coverage decrease of 0.12 km, 0.25 km, and 1 km in a city, suburban, and open areas respectively on the decrease of 2 Erlang in the capacity. When the $E_b/N_0$ decreases from 7 dB to 5 dB within the outage probability of 5 %, it shows the increase of 9 Erlang and of 0.2 km in a city on the same margin of 2.8 dB. Then, comparing it with a single cell, it shows the decrease of more than 10 Erlang in the capacity, but the enlargement of 0.17 km, 0.3 km, and 1 km in them on the margin decrease of 1.31 dB, also, with a hard handoff, the soft handoff gain of the increase of 10 Erlang and of 0.22 km, 0.5 km, and 2 km on the decrease of 2.16 dB.

• Journal of the Korean Institute of Landscape Architecture
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• v.40 no.4
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• pp.114-126
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• 2012

The purpose of this study is to find ways of the view evaluation of biotope classification before development by selecting an area, which is as large as about $10.0km^2$ around Non Gong Up, Auk Po Myun, Dalsung Gun, Daugu where the large project has been planned, as a subject of this study. The results of this study are as follows. Because of the classification of biotope, there are 23 kinds of types that are subdivided into 140 types. Three surveys for selecting the assessment indicators were performed. The first survey analyzed the importance of 22 selected assessment indicators based on the evaluation of an existing literature review and on the spot research. The second survey performed factor analysis and reclassified the value indicators. The third survey computed additive values of the selected assessment indicators. It used a method of standardizing the average importance of indicators by making their sum equal by 10. Theses additive values were then multiplied by each grade of indicators in order to make a final evaluation. The number of assessment indicators finally selected through the survey of asking specialist is vitality elements, visual obstructs elements etc 19. According to the result of evaluation of 1st, 1 grade spaces which especially valuable is analyzed that 7 spaces, 2 grade spaces for 4, 3 grade spaces for 5, 4 grade space for 2, 5 grade space for 5. Because of the evaluation of 2st, 1 grade spaces which especially valuable(1a, 1b) is analyzed that 15 spaces, 2 grade spaces which valuable is analyzed that 28 space. As the evaluation of site suitability model of this study couldn't have high applicability to other similar area because of having only one site as a subject, it is needed to do synthesize and standardization of various examples to have higher objectivity later.

• Proceedings of the Korea Information Processing Society Conference
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• 2012.04a
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• pp.283-286
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• 2012

국가과학기술지식정보서비스(NTIS)는 국가 R&D와 관련된 과제, 성과, 인력, 시설 장비, 기술산업 정보에 대해 이용자에게 통합검색서비스를 제공한다. 이용자는 질의어를 입력하여 원하는 정보를 선별하게 되고, 한 건의 상세 메타정보 및 원문을 검색서비스의 최종 목적지로 삼는다. 이 때 이용 중인 정보와 유사한 다른 유형의 R&D 정보를 함께 제공한다면 이용자의 검색 및 탐색노력을 줄임으로써 정보획득의 요구를 쉽게 충족시킬 수 있다. 본 논문에서는 국가 R&D 정보의 메타데이터와 검색엔진의 부스팅 기법을 이용하여 이종 정보간 유사문서 검색 방법에 대해 논한다. 이는 이용자가 원하는 정보를 서비스 최종 화면(메타 상세보기)에서 제공함으로써 검색 서비스의 효율성을 증대시킨다.

• Women's Health Nursing
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• v.17 no.4
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• pp.337-345
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• 2011

Purpose: The purpose of this study is to examine the impact of type D personality on health status and health promoting behaviors in middle-aged women. Methods: A cross-sectional study design was used with 220 middle aged women. All participants completed 3 measuring tools: a 14-item Type D Personality Scale, a 12-item Short Form Health Survey Questionnaire version 2, and Health Promoting Lifestyle Profile-version II. All were completed in November 2010. Results: The prevalence of type D personality was 34.5%. Type D women had significantly lower physical (p=.020) and mental health status (p<.001) compared with non-type D women. In addition Type D women reported significantly poorer performance of health responsibility (p=.015), physical activity (p=.001), nutrition (p=.027), spiritual growth (p<.001), interpersonal relations (p<.001) and stress management (p<.001) techniques in health behaviors than non-type D women. Conclusion: Type D personality is a vulnerability factor that affects health status and is associated with poor health promoting behaviors in middle aged women. Therefore, screening for Type D personality is important to detect women at risk for health status and quality of life in community settings in Korea.

• Korean Journal of Plant Taxonomy
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• v.45 no.4
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• pp.380-390
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• 2015

The morphological characters were observed in six taxa in the genus Dioscorea of Korea (D. polystachya, D. japonica, D. nipponica, D. quinqueloba, D. tenuipes, and D. dokoro). The underground structure and the formation of bulbil were useful characters for separating sect. Enanatiophyllum from sect. Stenophora. The important characters for discriminating taxonomic entities were as follows: the position of the anther and the shape of the pistil in the microstructural characters, including the protuberance of the base of the petiole, the shape and color of the flower, the shape of the fruit, and the shape of the seed wing. Based on the results, a key to Korean Dioscorea is provided and the distribution of these species in Korea is described.

• Proceedings of the Korea Technology Innovation Society Conference
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• 2012.11a
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• pp.374-386
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• 2012