• 수산경영론집
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• 제51권4호
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• pp.1-18
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• 2020

The paper aims to explore existence and degree of remaining fisheries damages after the completion of undertaking the Four Major Rivers Project focusing on the case of Yeongsan river. The paper seeks to show the necessity of consideration of periods of fishery resources recovery in the estimation of ex-post fisheries damages of the project by inferring the analysis of the annual variation of environmental indicators in the river. Therefore, the paper suggests three years of remaining periods of fisheries damages of the project utilizing the variation trend of ex-ante and ex-post annual output data of inland fisheries in Jeonnam province and individual catch of fisheries. In the measurement of the annual degree of fisheries damages during periods of fishery resources recovery, the paper attempts to suggest the method of comparision of day catch data per vessel between ex-ante and ex-post periods of the project, which were investigated by the same institute. Here the paper tries to make correction of ex-post catch data for holding the same catching condition as ex-ante situation by adopting the concept of competitive intensity of catching which was derived from the decreasing rate of number of fishing households in the area of Yeongsan river.

• 기술혁신학회지
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• 제19권3호
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• pp.417-438
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• 2016

표준화에 대한 투자와 연구개발에 대한 투자는 중소기업의 기업운영 방향성을 결정짓는 두 가지 주요한 전략이다. 동 연구는 중소기업의 표준화에 대한 투자가 기업의 매출 성과에 미치는 영향을 알아보고자 한다. 특히, 단순히 표준화 집중도를 살펴보는 것이 아니라 표준화에 대한 집중도와 연구개발에 대한 집중도를 함께 고려한 기업의 매출 성과에 미치는 영향을 분석하고자 한다. 2013년 한국표준협회에서 수행한 한국표준조사를 바탕으로 정보통신산업과 전기전자산업에 속하는 821개 기업을 대상으로 회귀분석을 수행하였다. 그 결과 중소기업의 연구개발 집중도 대비 표준화에 대한 투자는 그 기업의 매출 성과에 비선형관계(U자형)가 있음을 알 수 있었다. 본 연구결과는 중소기업의 경우 표준화에 대한 집중도 혹은 연구개발에 대한 집중도가 균형을 갖춘 접근보다는 하나에 집중하는 것이 매출성과에 도움 된다는 것을 시사한다.

• 한국농공학회지
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• 제45권2호
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• pp.126-137
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• 2003

The feasibility study of UV-disinfection system was performed for disinfection of effluent from wastewater treatment plant. Three low-pressure UV lamps of 17, 25, and 41 W were examined with various flow rates. Low-pressure UV lamps of 17W were examined with various turbidity, DOM (dissolved organic matter), and SS (suspended solid). The pilot plant was a flow-through type UV-disinfection system, and the range of exposure time varied from 5 to 40 seconds, turbidity from 0 to 40 NTU, DOM from 0 to 30 mg/L, and SS from 10 to 40 mg/L. The 41W lamp demonstrated complete disinfection showing no survival ratio in all the experimental conditions, and generally 17W and 25W lamps also showed high removal ratio over 97%. For the same UV dose (UV intensity times exposure time), high intensity-short exposure conditions showed better disinfection efficiency than low intensity-long exposure conditions. While the effects of turbidity and DOM were not apparent, the effects of SS was significant on the disinfection efficiency which indicates that SS control before UV-disinfection appears to be necessary to increase removal efficiency. Considering characteristics of effluent from existing wastewater treatment plants, cost-effectiveness, stable performance, and minimum maintenance, the flow-through type UV-disinfection system with high intensity and low-pressure lamps was thought to be a competitive disinfection system for wastewater reclamation.

• Journal of Korea Trade
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• 제25권6호
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• pp.126-142
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• 2021

Purpose - This study discusses the effects of human capital in the formation of GVC linkages. We also investigate GVC intensity between Korea and ASEAN. Design/methodology - To solve the doubling-counting problem in evaluating comparative advantage, RCA has been re-computed using domestic value-added (henceforth RCA_VA) at the country-sector level instead of value of trade. The impact of human capital on GVC intensity was empirically analyzed by establishing a panel data set with four industries (ISIC Rev. 4) in eight ASEAN countries from 2005 to 2015 from OECD-TiVA and WDI. Findings - The empirical results show that human capital has a negative effect on GVC intensity in the agriculture and manufacture industries, while it has a positive effect in the service and information industries. The results do not mean that low human capital is a barrier and inefficient to GVC linkages. Low Value-added activities may be more profitable to some emerging countries. These findings suggest that it is important to accurately identify the competitive elements to increase gains from trade under the GVC. Also, it shows that comparative advantages can be misled by an RCA index evaluated in trade volume under the GVC. Originality/value - This study highlights the importance of human capital as a factor for the efficient formation of Global Value Chain (GVC). This study has different from the literature in analyzing the role of human capital in formation of linkage of the GVC. And we clarify the changing patterns of trade by removing the double-counting problem under the GVC.

• Journal of Microbiology and Biotechnology
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• 제12권5호
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• pp.801-806
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• 2002

A multiplex competitive polymerase chain reaction (PCR) method was developed for the rapid identification and quantification of Leuconostoc mesnteroides and Lactobacillus plantarum populations which are the key microorganisms in kimchi fermentation. The strain-specific primers were designed to selectively amplify the target genes encoding 165 rRNA of L. plantarum and dextransucrase of L. mesenteroides. There was a linear relationship between the band intensity of PCR products and the number of colony forming units of each model organism. The PCR quantification method was compared with a traditional plate-counting method f3r the enumeration of the two lactic acid bacteria in a mixed suspension culture and also applied to a real food system, namely, watery kimchi. The population dynamics of the two model organisms in the mixed culture were reliably predictable by the competitive PCR analysis.

• 대한물리의학회지
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• 제9권1호
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• pp.45-53
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• 2014

PURPOSE: In this study, we tried to find out what kind of exercise was more effective in sleep disorder by comparing melatonin in blood after applying low intensity with high intensity exercise to sleep disordered rats induced by experiment. METHODS: We used male Sprague-Dawley rats which were 8weeks old and weighted 300g. They were supplied with water and food without any restriction. We kept the room temperature at $25^{\circ}C$ and controld the length of day and night in 12 hours blocks, respectively. We divided the rats 60 into 2 groups. To one group we applied low intensity exercise, and to the other we applied high intensity exercise for 15minutes per day over a period of 4 weeks. We extracted the blood from abdominal aorta before, after exercise, moved into EDTA tube, performed centrifugation. We decanted the serum $200{\mu}l$ from the blood into microcentrifuge tube by samples and moved into polypropylene culture tubes with micro pipette. We split enzyme solution $50{\mu}l$ into the tubes with melatonin direct kits and make them react at $37^{\circ}C$ for 2 hours. We split assay buffer $50{\mu}l$ into each tube and mixed melatonin tracer $50{\mu}l$ and melatonin antiserum $50{\mu}l$, respectively. After we made them react in room temperature, we decanted the superficial layer with a centrifuge and measured the activity for 1 minute by competitive method with ${\gamma}$-counter equipment. We draw a standard curve through logit-log graph with CPM(counts per minute) and counted the melatonin by B/B0. We conducted independent t-test to examine the homogeneous of melatonin value of before low-intensity and high-intensity exercise. We performed paired t-test to compare before and after low-intensity and high-intensity exercise, respectively. We carried out independent t-test to compare melatonin value after low-intensity and high-intensity exercise. Significance level was .05. RESULTS: The results were as follows; firstly melatonin was more increased in the group who was exposed to high intensity exercise when we compared before to after high and low intensity exercise, respectively. Secondly, high intensity exercise was more effective than low intensity exercise when we compared the two. CONCLUSION: In conclusion, secretion of melatonin which is the material of sleep improvement could be promoted by high intensity exercise. Low intensity exercise acted as a stress rather than improving sleep and had a negative effect on the secretion of melatonin because the melatonin was affected by stress.

• 기술혁신학회지
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• 제9권1호
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• pp.1-25
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• 2006

세계화, 다변화 경쟁 속에 연구개발을 통한 기술혁신은 기업의 지속가능한 성장을 위한 경쟁우위의 핵심역량으로 인식되고 있다. 이에 기술혁신과 기업성과의 관계에 대한 관심이 집중되고 있으나, 기존 연구는 이를 개념적이거나 정성적 수준에서 다루어 왔으며, 주로 혁신활동에 집중되어 왔다. 본 연구에서는 기업의 특성에 따라 기술혁신과 기업성과의 관계를 11년간 162개 국내 하이테크 기업을 대상으로 횡단면 시계열자료를 통해 실증적으로 분석하였다. 국내기업의 기술혁신 특성으로 규모효과를 제거한 특허강도, 연구개발강도, 무형자산강도를 대리지표로 사용하였고, 기업성과를 위해 순이익을 대리지표로 사용하였다. 11년간의 장기분석을 위해 변수를 실질가치화하여 분석한 결과 기업성과는 특허강도와 연구개발강도와 양의 관계를 가짐을 확인하였다. 또한 기업의 기술혁신 특성에 따라 분류한 8개 범주별 기업성과의 차이가 나타남을 밝혔다. 이를 통해 높은 특허강도와 연구개발강도를 보이는 기업일수록 높은 기업성과를 향유하고 있음을 알 수 있었다.

• 한국경영과학회지
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• 제11권2호
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• pp.7-12
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• 1986

The problem of strategic R & D investment is formulate as a differential game model and solved explicity for a special case. It is shown that, at equilibrium, an increase in the intensity of market competition or a decrease in the role of technology transfer results in an increase in the initial rate of investment by competing tfirms. The increased initial investment rate may enhance the rate of technology development. This dynamic model can be used to propose non cooperative R & D investment policies in technologically competitive situation.

• 국제지역연구
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• 제21권1호
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• pp.137-161
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• 2017

본 연구는 미얀마 의류산업에 있어 미얀마의 주요 수출대상국인 한국과 일본, 인접국이며 경제제재 이후로 미얀마와 지속적인 거래관계를 유지해오고 있는 중국, 태국을 선정해 의류산업 상호경쟁력을 살펴보고, 주요 의류상품별 무역결합도를 분석해 향후 미얀마 의류산업의 현실을 직시한 경쟁력있는 대안을 제시하고자 한다. 이에 한국은 미얀마와 섬유산업에 있어 유사한 경쟁력을 가지고 있는 국가와의 차이점에 따른 미얀마의 장점을 인식하고 한국이 미얀마 섬유산업에 있어 노동인력 양성, 산업관계 강화, 안전시설 강화, 건전한 노사관계 정립등 대책을 통한 미래지향적인 의류산업으로 발전할수 있어야 한다.

• 한국콘텐츠학회논문지
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• 제12권2호
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• pp.369-387
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• 2012

본 연구는 기업의 외부환경과 자원 및 능력이 기업의 전략 유형과 경영성과에 미치는 영향을 분석하기 위해 전략에 관한 기존 연구에 기초하여 연구모형을 개발하고, 벤처기업을 대상으로 설문조사를 통해 필요한 자료를 수집하였으며, 회귀분석과 로지스틱 회귀분석을 이용하여 자료를 분석하였다. 실증분석 결과, 산업성장률이 높을수록, 경쟁강도가 낮을수록 공격형 전략을 추구하는 것으로 나타났지만 환경불확실성은 전략 유형에 유의적인 영향을 미치지 못하는 것으로 나타났다. 기업은 기술적 자원과 인적 자원을 많이 보유할수록 공격형 전략을 추구하는 것으로 나타났지만 기업의 재무적 자원과 마케팅능력은 기업의 전략 유형에 유의적인 영향을 미치지 못하는 것으로 나타났다. 환경불확실성, 산업선장률, 기술적 자원, 인적 자원, 재무적 자원, 마케팅 능력 등은 기업성과에 영향을 미치지만 경쟁강도는 기업성과에 유의적인 영향을 미치지 못하는 것으로 나타났다. 최고경영자역량은 기업의 외부환경과 경영성과간에, 그리고 기업의 자원 및 능력과 경영성과간에 유의적인 조절효과가 존재하지 않는 것으로 나타났다. 반면, 최고경영자역량이 경영성과에 직접적으로 영향을 미치는 독립변수로써의 역할은 존재하는 것으로 나타났다.