• 수산경영론집
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• 제45권1호
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• pp.95-107
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• 2014

This study is aimed to analyze the economic performance of black rockfish aquaculture by standardizing cost structures by region and farming size. The result of survey on farming and sale condition in each region, stocking density, survival rate, juvenile price, and unit production was the highest at Yeosu and Tongyeong, Heuksando showed the lowest. While rearing period was the longest at Tongyeong, the shortest region was Yeosu and Wando. In farming cost structure by region, amount of feeing was the highest at Tongyeong and Yeosu, and the lowest was Heuksando. Cost of medicine was high in Wando and Taean region, Yeosu and Hecksando was low. In case of farm size, feed cost ratio was high in the order of medium(0.75ha), small(0.25ha) and large(1.25ha) size. Standard production cost at every farm size of Heuksando showed the lowest among these regions. Taean and Yeosu was middle, and Tongyeong and Wando was the highest. According to the income, profit rate and investment return of farm size in all regions, as the bigger farm size, the higher income and profit rate was revealed. However, in case of Wando, Taean, and Heuksando which regions has high investment return, medium farm size was higher than large size. The result of economic analysis according to various factors, economic feasibility of black rockfish aquaculture in marine floating cage was showed significant changes by rearing and market condition.

• 정보화정책
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• 제17권2호
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• pp.86-103
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• 2010

이 연구에서는 이동통신사가 지급하는 이동통신 단말기보조금의 경제적 파급효과를 산업연관분석을 통해 파악하고 이동통신사가 취할 수 있는 다른 두 가지 대안과 비교하였다. 첫째 시나리오는 이동통신사가 단말기보조금을 지급하는 경우이다. 둘째는 이동통신사가 단말기보조금을 소비자에게 지급하지 않고 그 금액만큼을 이동통신 설비투자에 사용하는 경우이다. 셋째는 이동통신사가 단말기보조금만큼 이동통신서비스 요금을 인하하고 소비자가 이 요금인하분을 일반 재화 및 서비스 소비에 활용하는 경우이다. 이러한 세가지 시나리오를 분석한 결과 단말기보조금을 지급할 경우의 생산 부가가치 수입 취업 고용유발효과가 둘째와 셋째 시나리오에 비해 비교적 더 큰 것으로 나타났다. 그 이유는 단말기보조금 지급은 단말기 수요 증가를 가져오는데 이는 다른 시나리오에 비하여 생산 및 수입유발효과가 크기 때문이다. 또한 단말기보조금은 이동통신 서비스 대리점 등 유통업체의 인센티브로 귀착되는데 유통업의 부가가치, 취업 및 고용유발효과 또한 타 시나리오의 그것보다 더 크기 때문에 이러한 결과가 나타난 것으로 보인다.

• 디지털융복합연구
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• 제9권6호
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• pp.295-311
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• 2011

정부는 벤처 인증을 통하여 벤처 기업의 발전을 도모하고 있다. 이를 달성하기 위하여 매 년 '벤처 기업 정밀 실태 조사'를 실시하고 있다. 본 연구는 이 자료를 이용하여 벤처 정책의 효과를 파악하기 위한 목적으로 시작하였다. '벤처 기업 정밀 실태 조사'에 나타난 지원의 효과는 창업활성화, 기술 혁신 도모, 마케팅 능력의 향상, 기업 이미지의 개선, 자금 조달 및 투자, 조세 감면의 이익 등으로 벤처 기업 인증의 효과를 인정하고 있는 것으로 보인다. 그러나 자본과 노동을 기본으로 사용하는 생산 함수를 추정하고, 이를 이용한 매출 함수를 이용하여 벤처 지원의 효과를 보면 실제로 생산과 매출의 증대를 가져오는 것은 자금 조달 및 투자의 용이성만 통계적으로 유의하게 효과를 주는 것으로 나타났다. 또한 기술적 비효율성의 제거에 도움이 되는가를 살펴보았더니 벤처 지원으로 추정된 각 효과는 실제로 기술적 비효율성을 제거하는 것으로 나타났으나 창업의 용이성은 반대로 기술적 비효율성을 오히려 증가시키는 것으로 나타났다.

• 대한산업공학회지
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• 제36권3호
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• pp.186-192
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• 2010

The present study classified the auto-parts makers into four groups according to their investment ownership. Four groups consist the one fully owned by Koreans, the one fully owned by foreigners, the one owned less than 100% but more than 50% by foreigners, lastly the one owned by less than or equal to 50% by foreigners. Among these, the auto-parts makers, 100% foreign ownership, have the highest Malmquist productivity index while 100% Korean-owned part-makers has the lowest productivity. In case of the 100% foreign ownership companies, the cause of Malmquist change, however, is attributed to the technical efficiency change. In particular, the pure technical change is the main source of the Malmquist change. This may indicate that the 100% foreign-owned companies have successfully transferred their production process technologies to the Korean plants. They are enjoying so called the "imitation-effect." 100% Korean-owned companies were not able to create the "imitationeffect" and therefore failed to close the gap with the foreign-owned companies in terms of the production efficiency. 100% Korean-owned auto-parts makers, however, outperformed the foreign-owned companies in the technological change. The outstanding technological change may indicate that Korean-owned part makers were able to narrow the gap with the foreign-owned companies in the area of engineering technological capabilities. The same results were also observed for 50% foreign-owned companies. Knowing that the core competence of the auto-parts makers lies on the engineering technological capabilities, the research found that the most desirable form of the foreign investment was 50% of foreign ownership.

• 한국산학기술학회논문지
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• 제3권2호
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• pp.110-114
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• 2002

주얼리 제조 공정중 마스터패턴 제조 공정은 전체 제조원가의 20%를 차지하기 때문에 매우 중요한 공정이다. 지금까지는 수작업으로 왁스 패턴을 제작하고 이를 이용하여 석고형을 만들고 석고형으로 마스터 패턴을 제작하는 복잡한 공정을 거쳐 제작하였다. 본 연구는 쾌속조형기를 이용하여 듀라폼 재질의 몰드를 만들고 저융점합금을 이용하여 마스터패턴을 직접 제작하는 새로운 공정을 개발하였다. 듀라폰의 용융진이 190℃ 이므로 용융점 70℃의 Pb-Sn-Bi-Cd 계의 저융점 합금을 주물재료로 이용하여 마스터패턴을 제작하였다.

• 한국산림과학회지
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• 제101권1호
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• pp.46-52
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• 2012

본 연구의 목적은 구기자를 새로이 재배하고자 하는 사람들이나 재배면적을 늘이고자 하는 사람들에게 구기자의 경영실태 및 소득과 투자 수익성을 분석하여 투자에 대한 정보를 제공하고자 하는 것이다. 수익성 분석기법은 IRR, B/C Ratio, NPV를 이용하였다. 구기자 주산단지인 충남 청양, 전남 진도지역의 52가구의 구기자 재배농가를 대상으로 2009년 5월부터 9월까지 작업공정별 투입노동 및 자재비 등에 관해 면접방문조사를 실시하였다. 그 결과 현지판매가격과 투자수익성의 판단기준이 되는 가격을 기준으로 IRR, B/C Ratio, 조수익, 소득, 순수익, 소득율 등을 구하였다. 할인율 3%를 적용하였다. 최근 5년간 농가평균판매가격 kg당 15,000원은 B/C Ratio가 0.89로 나타나 투자수익성이 없는 것으로 나타났다. 적어도 수익성을 맞출려면 IRR=3.00%, B/C Ratio=1.00을 나타내는 구기자 판매가격이 16,800원/kg이상이 되어야 한다고 판단되며, 이때의 소득율은 21.75%인 것으로 나타났다.

• 기술혁신연구
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• 제2권1호
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• pp.170-190
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• 1994

The importantce of a development of competitiveness in domestic construction industry is growing as some of domestic construction markets is scheduled to open to foreign competing firms with higher level of construction technology and management. A national level of competitiveness in domestic construction industry and firms are partially, but significantly, affected by a technology level and a characteristics of production pattern. The purpose of the study is mainly to analyze and identify a technology level, production pattern and a development stage of R&D activities of domestic construction industry and firms. Based on these findings the study draws on a concluding remarks and derives technology policy implications. Results of analysis in the study impliy that (1) competitiveness of domestic construction firms(industry) in terms of technology level is relatively weak as compare to that of advanced foreign competing firms, (2) degrees of substitution of capital for labor are seemed to be relatively high, (3) R&D (investment) activities of domestic construction firms are generally spread out in forms of import, adjustment and betterment, and (4) only a small number of big domestic construction firms are seemed to afford to R&D investment for research facilities and equipments, but not enough for higher level of R&D man-power. The study suggests that technology policy for construction industry should be based on a fundamental policy directions. For example the increase in size and heightened quality level of R&D man-power should be placed in a top priority in policy agenda. Sound and specific policy items should be developed for planning and design, and maintenace and inspection technology in order to lead domestic industry to compete with foreign firms with full strength.

• Ocean and Polar Research
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• 제38권3호
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• pp.225-234
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• 2016

This project sought to conduct an economic feasibility study regarding the commercial production of bio-hydrogen by the marine hyperthermophilic archaeon, Thermococcus onnurineus NA1 using carbon monoxide-containing industrial off-gas. We carried out the economic evaluation of the bio-hydrogen production process using the raw material of steel mill by-product gas. The process parameter was as follows: $H_2$ production rate was 5.6 L/L/h; the conversion of carbon monoxide was 60.7%. This project established an evaluation criterion for about 10,000 tonne/year. Inflation factors were considered as 3%. The operating costs were recalculated based on prices in 2014. The total investment required for development was covered 30% by capital and 70% by a loan. The operation cost for the 0.5-year test and integration, and the cost for the first three months in the 50% production period were considered as the working capital in the cost estimation. The costs required for the rental of office space, facilities, and other related costs from the construction through to full-scale production periods were considered as continuing expenses. Materials, energy, waste disposal and other charges were considered as the operating cost of the development system. Depreciation, tax, maintenance and repair, insurance, labor, interest rate charges, general and administrative costs, lubrication and miscellaneous expenses were also calculated. The hydrogen price was set at US$ 4.15/kg for the economic evaluation. As a result, the process was considered to be economical with the payback period of 6.3 years, NPV of 18 billion Won and IRR of 26.7%.

• Asian-Australasian Journal of Animal Sciences
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• 제6권1호
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• pp.139-145
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• 1993

Biogas created from animal waste is a precious energy source. A practical and successful utilization of the biogas is not easy, because there lie some difficulties in biogas production and facilities investment. In this study, the requisites for a successful biogas utilization were discussed. The production results obtained in the previous operation of anaerobic digestion plant were used for the simulation. When the slurry heating was designed for constant biogas generation, depreciation costs of the facilities amounted 1,175,000 yen per year, and biogas productions at $24.5^{\circ}C$, $30.0^{\circ}C$ and $35.5^{\circ}C$ were $16.8m^3$, $17.6m^3$ and $25.1m^3$, respectively. Removal ratios of organic matters were not so high. At $35.5^{\circ}C$, energy value of the biogas produced was estimated 125.5 Mcal per day, and the following heat loss (y Mcal/day) was brought about by the temperature difference ($X^{\circ}C$) between the digester and atmosphere; y = 0.769X - 5.375. The costs of biogas production per cow were assumed to decrease according to enlargement of feeding scale, especially on scales of more than 30 cows. On recent levels of costs and prices of energy in Japan, they were nearly equal to 2 to 3 fold of the price of municipal mixed gas when a anaerobic digester was compulsorily heated and kept at $30.0^{\circ}C$ or $35.5^{\circ}C$.

• KSBB Journal
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• 제21권4호
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• pp.267-272
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• 2006

주정공장 근처 토양에서 분리한 에탄올 발효균주 KJ는 Saccharomyces italicus로 판명되었으며, glucose가 최적의 탄소원으로 확인되었다. 균주 KJ의 최적배양조건은 온도 $30^{\circ}C$, 초기 당 농도 10%, 초기 pH 5 근방, 혐기조건으로 판명되었다. 초기 탄소원이 동일한 조건에서 YM배지(glucose 10 g/L)와 SFW배지(RS 10 g/L)에서 에탄올 생산은 각각 5.34, 5.68 g/L로 나타나, KJ균주는 음식물쓰레기 당화액을 에탄올 발효배지로 적절하게 사용될 수 있음이 확인되었다. 에탄올 생산배양에 SFW의 이용은 에탄올생산단가를 대폭 낮추게 하여 대체에너지인 에탄올의 대량생산기술의 경제성을 확보하는데 크게 기여할 것이다.