벤처기업의 네트워크 특성 분석

강연실(Yeon-Sil Kang),조부연(Boo-Yun Cho) 한국인터넷전자상거래학회 2016 인터넷전자상거래연구 Vol.16 No.3

This study explores the structural characteristics of business ecosystem for venture businesses in Jeju island. We try to identify the influence level of individual firm with social network analysis approach. Assuming the centrality could be the key proxy for the power in business network, mean differences have been compared by t-test and ANOVA to confirm the significance of the tests. Based on the data gathered in I/CT and non-I/CT venture firms in Jeju island, we built the 1-mode network to visualize the transactional relationship. Results show that the venture firms in I/CT sector more influence to other industries, and dominate the flow of information and resources. Implications with more detail analyses have been proposed, and the needs of alternative proxy rather than centrality has been suggested for the future research.

제주지역 기업에 대한 사업화 지원사업의 효율성 분석

강연실 ( Yeon Sil Kang ),손성민 ( Seong Min Sohn ),임소진 ( So Jin Im ),조부연 ( Boo Yun Cho ) 제주대학교 탐라문화연구소 2014 탐라문화 Vol.0 No.47

기업 경쟁력 강화를 위한 기업지원사업은 연구개발에서 사업화로 중심이 옮겨가고 있는 상황이다. 투자된 자원이 기술개발의 가시적 성과로 나타나지만 사업화로 이어지지 않는 경우가 많았기 때문이다. 기업에 대한 사업화 지원사업의 성과평가에 대하여 명확한 방향성이 제시되지 않았는데, 이는 기업지원의 효과가 정량적 목표달성에 더불어 정성적 성과로 나타나는 경우가 많아서 기존의 계량적 평가기법 적용에 제약이 있었기 때문이다. 본 연구에서는 정부의 기업지원사업을 수혜 받은 제주의 BT(Bio technology)산업 관련 기업을 대상으로 DEA 모형을 적용하여 상대적 효율성을 평가하였다. 제주는 산업간 균형 있는 성장과 도내 산업의 대외 경쟁력 확보를 위하여 지역특화 전략산업을 육성하고 있다. BT 산업은 제조업 부문의 지역특화 전략산업의 하나로 청정한 제주향토자원을 재가공하여 고부가가치화 할 수 있을 것으로 기대되고 있다. 정부는 해당 산업을 지속적으로 육성시키기 위하여 지역산업지원사업 등 다양한 정책을 시행하며, 사업화를 위한 기업지원이 집중되고 있다. 본 연구에서는 제주지역 바이오산업에 대한 최근 2년간(2012-2013년)의 데이터를 기반으로 연도별 효율성을 분석한 후, 연차별 투입변수와 산출변수 간의 시차를 두고 효율성을 분석하는 접근을 시도하였다. 분석결과에 따르면, CCR 모형의 평균 효율성보다는 BCC 모형의 평균 효율성이 더 높게 나타났으며,‘2012년(I)-2013년(O)’의 경우 모든 모형에서 효율성 증가가 나타나면서 기업지원사업의 효과가 시차를 두고 성과로 시현되는 것을 실증하였다. 이를 통하여, 정부의 사업화 지원사업의 효율성 분석에 대하여 DEA 평가방법론이 적절하였음을 제시하면서 산업 내 선도기업을 선별하여 우선 육성할 수 있는 평가체계를 제안하였다. 특정지역과 산업군에 제한된 표본 특성과 함께, 정태적 DEA 모형 적용에 따른 시계열적 변화를 포착하지 못한 것이 연구의 한계로 지적되었다. 따라서 향후 연구에서는 충분한 시계열 분석이 가능하도록 연차별 데이타 확보가 요구되었으며, 이를 기반으로 시간의 변화에 따른 효율성의 변화를 살펴볼 수 있는 동태적 분석방법 도입이 향후 연구방향으로 제시되었다. Government support to enhance the competitiveness of companies are in the transition from R&D to commercialization of the developed technology. Considering no failure for R&D projects which have been supported by government, It was hard to explain the reason why only few success for commercialization. While the importance of commercialization has been emphasized, no concrete the method and criteria for the evaluation has been suggested for the effectiveness of government support on commercialization. Conventional evaluation method based on quantitative approaches are restricted to accommodate the qualitative outcomes as well as quantitative variables. In this study, we try to analyze the relative efficiency using the DEA method based on the data gathered from bio-technology(hereafter, BT) enterprises which have been supported by government through the Jeju Technopark. Local government of Jeju island cultivates the industries as the strategic industries with local specialty to sustain competitiveness of this island. BT industry are selected one of the strategic industries for its freshness of natural resources and profitability of manufacturing pursuing eco-friendly products. Government has been supporting the BT industries with the multi-dimensional policies, and now the efforts to help this industry are concentrated on commercialization for the developed technologies. We firstly analyze the annual efficiency based on the data from 2012 to 2013, and try to consider lagging effects with the one year gab between input and output variables. Results show that the efficiency of the BCC model is higher than that from the CCR model. And the overall efficiencies has been increased for the time window of 2012(Input)-2013(Output), which support the existence of lagging effects for the realization of the government support for commercialization. This study contributes to the issues of evaluation for government support on commercialization by suggesting appropriateness of DEA method to accommodate the qualitative and quantitative nature of this stage. To identify the characteristics of BT companies in Jeju island, we accepted the limitation to generalize the learned knowledge from this study. Also, changing patterns with time-series which have not been captured in this research are required to be investigate in the further researches.

DEA분석을 통한 정부 기업지원사업의 효율성 분석

강연실(Yeon Sil Kang),손성민(Seong Min Sohn),임소진(So Jin Im),조부연(Boo Yun Cho) 한국경영학회 2014 한국경영학회 통합학술발표논문집 Vol.2014 No.8

기업 경쟁력 강화를 위한 기업지원사업은 연구개발에서 사업화로 중심이 옮겨가고 있는 상황이다. 투자된 자원이 기술개발의 가시적 성과로 나타나지만 사업화로 이어지지 않는 경우가 많았기 때문이다. 사업화에 대한 기업지원 성과평가에 대해서는 명확한 방향성이 제시되지 않았는 데, 지원의 효과가 정성적 성과로 이어지는 경우가 많아서 계량적 평가기법 적용에 제약이 있었기 때문이다. 본 연구에서는 정부의 기업지원사업을 수혜받은 BT(Bio technology)기업을 대상으로 DEA 모형을 적용하여 상대적 효율성을 평가하였다. 제주지역 바이오 산업에 대한2012년-2013년의 데이터를 기반으로 연도별 효율성을 분석한 후, 연차별 투입변수와 산출변수간의 시차를 두고 효율성을 분석하는 접근을 하였다. 분석결과에 따르면, CCR 모형의 평균 효율성보다는 BCC 모형의 평균 효율성이 더 높게 나타났으며,‘2012년(투입)-2013년(산출)’의 경우에서 모든 모형에서 효율성 증가가 나타나면서 기업지원사업의 효과가 시차를 두고 성과로 시현되는 것을 실증하였다. 지역과 산업군에 제한된 표본특성과 함께, 정태적 DEA 모형 적용에 따른 시계열적 변화를 포착하지 못한 것이 연구의 한계로 지적되었다. 따라서 향후 연구에서는 충분한 시계열 분석이 가능하도록 연차별 데이타 확보가 요구되었으며, 이를 기반으로 시간의 변화에 따른 효율성의 변화를 살펴볼 수 있는 동태적 분석방법 도입이 향후 연구방향으로 제시되었다.

Flupyrazofos 원제 및 정제품의 불순물 조성과 Acetylcholinesterase에 대한 저해 비교

유경렬(Kyoung-Youl You),조부연(Boo-Yeon Cho),박동식(Dong-Sik Park),허장현(Jang-Hyun Hur) 한국농약과학회 2005 농약과학회지 Vol.9 No.1

Flupyrazofos (O,O-diethyl O-1-phenyl-3-trifluoromethylpyrazo-5-yl phosphorothioate) is an organophosphorus insecticide with a pyrazole moiety which is newly developed and commercialized by SUNGBO chemical company and Korean Research Institute of Chemical Technology for effectively control against diamond back moth. This study was conducted to determine the composition and quantity of impurities in technical 1 (94.5%), technical 2 (97.6%) and purified (99.2%) flupyrazofos using GLC/MSD. Bimolecular inhibition rate constant(ki) with acethylcholinesterase (in vitro) and I?? with mouse brain acetylcholinesterase (in vivo) were measured for comparing inhibitory patterns of two technicals and purified flupyrazofos. Impurities of flupyrazofos were identified as O,O,O-triethylthio-phosphoric acid (TEA), 1-phenyl-3-trifluoromethyl-5-ethoxy pyrazole (PTMEP), O,O-diethyl O-1-phenyl-3-trifluoromethylpyrazo-5-yl phosphoric acid ester (flupyrazofos oxon), and O,S-diethyl O-1-phenyl-3-trifluoromethylpyrazo-5-yl phosphorothionate (S-ethyl flupyrazofos). In in vitro, technical 1 showed the fastest inhibition on AChE activity among them. And technical 1 and 2 showed 40% higher in vivo inhibition against mouse brian AChE than purified flupyrazofos did. These results could be caused by the impurities such as flupyrazofos oxon and S-methyl flupyrazofos contained in technical grades of flupyrazofos.

Flupyrazofos(KH - 502) 의 토양중 용탈 및 흡착

조부연,양재의,유경렬 한국환경농학회 1997 한국환경농학회지 Vol.16 No.1

신규 활성물질인 Flupyrazofos(KH-502)의 토양에서의 흡착성, 용탈성 및 잔류성을 실내조건과 포장조건하에서 연구하여 본 공시약제의 안전사용을 위한 기초자료를 제공하고 토양-수질환경에 미칠 영향을 예측 평가하기 위한 목적으로 수행한 연구결과는 다음과 같다. 1. Flupyrazofos의 흡착량과 시간과의 사이에는 유의성있는 power function 관계가 있어서, 흡착이 빨리 일어나서 반응 30분 후에 45%가 흡착되고, 6∼12시간 이후에는 疑似평형에 도달했다. 2. Flupyrazofos의 흡착은 First-order kinetic model에 유의성있게 따랐고, 가해준 Flupyrazofos의 50%가 흡착되는 시간은 사양토의 경우 5.8시간이었다. 3. Flupyrazofos의 농도에 따른 흡착양상은 Freundlich 등온식으로 설명될 수 있었고, 등온식은 S-型으로 분류될 수 있었다. 4. 토양 column을 통해 용탈된 Flupyrazofos의 농도는 가해준 농도에 비해 매우 낮았다. 용탈된 Flupyrazofos의 농도는 사양토가 식양토보다 약간 높았다. 砂壤土에서 용탈된 최대 C/C_0 값이 0.073, 埴壤土에서는 0.017에 불과했다. 5. 표토에서 Flupyrazofos의 잔류량은 낮은편이며 시간이 경과할 수록 현저히 감소했다. 반감기는 사양토의 경우 20일, 식양토는 18일이었다. 심토로 이동·잔류된 농도는 매우 낮았다. 6. Flupyrazofos의 흡착시험, 용탈시험, 포장시험 결과와 약제의 물리화학적 특성을 근거로 판단할 때 공시농약은 토양에서 잘 흡착디고 이동·잔류성이 낮기 때문에, 상용농도를 시용할 경우 주변 환겅에 미칠 수 있는 위해성은 낮은 것으로 판단된다. Adsorption, leaching, and retention of the Flupyrazofos(KH-502), a new active ingredient for insecticide, in the soils under laborarory and field conditions were investigated to provide the basic data for the safety use and to assess a secondary impact of this insecticide on soil and water environments. A significant power function relation was found between the adsorbed KH-502 and time, representing that 45% of the added KH-502 was adsorbed within 30 min. but a quasiequilibrium was reached after 6 to 12 hr with a slower adsorption. Adsorption phenomena followed th first-order kinetics and time required for 50% adsorption was 5.8 hr. The equilibrium adsorption isotherm was explained by the Freundlich equation and was classified as S-type. The amounts of KH-502 leached through the soil column (C) as compared to initial conc. (C_0) were very low and these relative concentrations (C/C_0) were 0.073 and 0.017 in SL and CL soils, respectively. The residual conc. of KH-502 in the surface soil was comparatively low and decreased with time. Half-lives of KH-502 in the surface soil was comparatively low and decreased with time. Half-lives of KH-502 under the field conditions were estimated to be 20 and 18 days in the SL and CL soils, respectively. The KH-502 cone, transported to the subsurface soils was extremely low. These results demonstrate that KH-502 has a low pollution risk potential to the surrounding environment as far as it is used following the recommended guideline.

신규 살충제인 O , O - Diethyl - O -(1- phenyl -3- trifluoromethyl -5- pyrazoyl) thiophosphoric acid ester 의 열에 의한 분해성

한대성,조부연 한국환경농학회 1992 한국환경농학회지 Vol.11 No.3

Thermal decomposition was conducted to investigate the influence of the various factors on stability of a new insecticide, [O, O-Diethyl O-(1-phenyl-3-trifluoromethyl-5-pyrazoyl) thiophosphoric acid ester : KH-502], in view of those informations applicable for industrial exploitation. In the thermal decomposition experiment, KH-502 was, after mixing with Fe, Cu and adjustment of moisture and pH conditions, subjected to three temperatures, 25, 50, and 100℃. Results for stability, and degradation pattern of KH-502 from the above experiment can be summarized as follows: 1. Main products of the thermal decomposition when this was conducted in the closed system were identified as following five compounds:O, O, O-Triethylthiophosphoric acid(TEPA), 1-Phenyl-3-trifluoromethyl-5-ethoxypyrazole(PTMEP), 1-Phenyl-2-ethyl-3-trifluoromethyl-5-hydroxypyrazole(PETMHP), O, O-Diethyl O-(1-phenyl-3-trifluoromethyl-5-pyrazoyl)phosphoric acid ester(KH-502 oxo form), O, S-Diethyl O-(1-phenyl-3-trifluoromethyl-5-pyrazoyl)phospho rothiolate(S-ethyl KH-502). However, compounds such as oxo form and S-ethyl KH-502 were not identified when the thermal decomposition was proceeded in the open system. 2. KH-502 was stable at 25 and 50℃, but it was decomposed at 100℃ following the first-order kinetics at the early stages of decomposition. 3. Rate constants for the thermal decomposition of KH-502 at 100℃ were in the orders of Cu powder addition 0.344$gt;Cu plate addition 0.21$gt;moisture addition 0.05$gt;closed system=open system=iron addition=pH 5.5 adjustment 0.04$gt;pH 8.5 adjustment 0.027 day^(-1), representing KH-502 was decomposed fast at Cu powder treatment and slow at pH 8.5 adjustment. 4. Half-life for the thermal decomposition of KH-502 at 100℃ was in the orders of Cu powder addition 2.02$lt;Cu plate addition 3.3$lt;moisture addition 14.5$lt;open system 16.3=pH 5.5 adjustment 16.3$lt;iron addition 17.3=closed system 17.3$lt;pH 8.5 adjustment 25.9 days. 5. KH-502 was converted into S-ethyl isomer and oxo form due to oxidation of P=S bond at the early stage of the thermal decomposition, and those intermediates were decomposed to PTMEP, PETMHP, and TEPA compounds continuously by cleavage of the molecular structure with time.

유기성 Sludge가 잔디의 생육과 토양의 화학적 특성에 미치는 영향

金鼎濟,梁在義,趙富衍 江原大學校 附設 環境硏究所 1991 環境硏究 Vol.8 No.-

Various kinds of the industrial wastes, when introduced into the environment, can cause many problems, Proper treatment and utilization of the wastes thus are one of the recent environmental concerns. A greenhouse experiment was conducted to investigate the influence of organic sludge from the beer manufacturing process on the growth of the Korean turf (Zoysia japonica, STEUD.) and the chemical properties of the soil. Treatment levels of the experimental organic sludge, which was pre-treated with quicklime, were ranged fom 0 to 20kg/m³. Sowing dates were 5 to 30 days elapsed after the sludge application. Increasing levels of the experimental sludge increased height, root length, number of leaf, and yields of the turf. Planting periods interacted with treatment level of the sludge to show a positive effect on the growth parameters. Uptakes of nitrogen and calcium were also enhanced by treatment. Soil organic matter and exchangeable Ca contents were increased by the sludge treatment. Sludge caused to increase soil pH upto 8.3 and this maintained for over 60 days. A possibility to utilize this organic sludge as a fertilizer could be supported by results of positive effects of this sludge on growth, nutrient uptake and soil fertility parameters, Further researches on the utilization of the industrial wastes, concerning on treatment level, long term effect, and a possible side effect, should be followed.