• 한국유기농업학회지
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• 제23권3호
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• pp.455-467
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• 2015

This study analyzed the regional economic feasibility of greenhouse gases (GHGs) reduction technology in paddy rice. Firstly, the impact of GHGs reduction technology on productivity, emission reduction, and costs is different from region to region. Secondly, the water irrigation system contributes to productivity, GHGs reduction, and water reduction, but the profit of paddy rice will decrease because of increase in fixed costs and variable costs. Thirdly, the economic feasibility shows that water-savings plot has a 1.41 in a benefit-cost ratio.

• 한국농공학회논문집
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• 제48권6호
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• pp.31-41
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• 2006

The analysis used in this work was cost-benefit analysis method. All future costs and returns of a given mushroom house were discounted to the time of initial investment (present) by means of 3.5% discount rate. Then the cost of ownership was compared to the return from the system. This analysis method has been developed and coded into a balance sheet for use on a EXCEL program. Using this programmed analysis,a large number of the case studies were examined using different combinations of economic conditions. These results will be very useful to individuals considering investment in a mushroom house, or any similar production system. By the way of the sensitivity analysis for each important parameter, the change of the marginal cost-benefit period could be finally determined. These parameters were typically construction cost of mushroom house, cost of cooling system, required cooling and heating energy amounts, unit price of mushroom media bottle, growing number of media bottles, production weight per unit bottle, sale price of mushroom, and annual number of growing period, etc.

• Journal of Preventive Medicine and Public Health
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• 제28권2호
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• pp.450-461
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• 1995

This paper tested by using Micro TSP, an empirical econometric analysis to approve officially a hypothesis of price elasticity of the demand for medical care services in Korean national medical insurance and the economic effect of health care delivery system with time-series datas of Medical Insurance Statistical Yearbook$(1981\sim1993)$. The results suggest that the Korean medical insurance system shows moral hazard due to the change of coinsurance and the economic effect according to intervention of the health care delivery system, but it is different by insurers regardless of the same structure of the medical insurance scheme.

• 에너지공학
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• 제2권1호
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• pp.83-94
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• 1993

엑서지의 개념을 이용하여 에너지변환시스템의 성능을 분석함으로써 시스템의 최적화의 시스템효율을 향상시킬 수 있는 방안을 모색하였다. 복합화력 열병합 발전 시스템을 운전방식에 따라 3가지 시스템조합으로 구분하고 이에 대한 엑서지효율, 그리고 시스템조합의 각 흐름들에 대한 엑서지량과 엑서지 손실량을 계산하였다. 또한 이 양들에 대한 경제적 가치를 평가하고 엑서지 효율이 낮고 비용이 많이 드는 장치를 규명하여 써브시스템의 교체와 보수·유지에 대한 우선 순위를 결정하였다. 이러한 결과는 에너지 변환시스템의 효율향상과 경제적 운영을 위한 계획수립에 도움을 줄 수 있다.

• 산업경영시스템학회지
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• 제47권2호
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• pp.57-64
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• 2024

The use of big data needs to be emphasized in policy formulation by public officials in order to improve the transparency of government policies and increase efficiency and reliability of government policies. 'Hye-Ahn', a government-wide big data platform was built with this goal, and the subscribers of 'Hye-Ahn' has grown significantly from 2,000 at the end of 2016 to 100,000 at August 2018. Additionally, the central and local governments are expanding their big data related budgets. In this study, we derived the costs and benefits of 'Hye-Ahn' and used them to conduct an economic feasibility analysis. As a result, even if only some quantitative benefits are considered without qualitative benefits, the net present value, the benefit/cost, and internal rate of return turned out to be 22,662 million won, 2.3213, and 41.8%, respectively. Since this is larger than the respective comparison criteria of 0 won, 1.0, and 5.0%, it can be seen that 'Hye-Ahn' has had economic feasibility. As noticed earlier, the number of analysis using 'Hye-Ahn' is increasing, so it is expected that the benefits will increase as time passes. Finally, the socioeconomic value gained when the results of analysis using 'Hye-Ahn' are used in policy is expected to be significant.

• 한국유체기계학회 논문집
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• 제19권2호
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• pp.27-35
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• 2016

The purpose of this study is to develop a method to predict the performance and economics of a micro gas turbine cogeneration system using performance correction curves. The variables of correction curves are ambient temperature, ambient pressure, relative humidity and load fraction. All of the values of correction factors were expressed as relative values with respect to design values at the ISO conditions. Once the correction curves are obtained, system performance can be predicted relatively easily compared to a detailed performance analysis method through a simple multiplication of the correction factors of various variables at any operating conditions. The predicted results using the correction curve method were compared with those by the detailed and more complex performance analysis in a wide operating range, and its feasibility was confirmed. To illustrate the usability of the correction curve method, the results of an economic analysis of a cogeneration system considering varying operating ambient condition and load was presented.

• 통상정보연구
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• 제16권5호
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• pp.225-248
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• 2014

2014년11월10일 한국과 중국은 FTA체결을 하였다. 세계의 공장 중국으로의 진출이 더욱 더 용이해졌다고 할 수 있다. 그러나 최근 중국 경제 성장이 둔화되면서 우려하는 목소리가 나오기 시작하였다. 따라서 본 연구에서는 중국 경제 성장 둔화가 한국 경제에 미치는 영향을 분석하고자 한다. 이를 위해서 현재 중국의 경제 상황에 대한 추이와 향후 앞으로의 전망을 제시하고, 중국 경제 성장을 둔화시키는 변화 조짐들을 경제 성장률 감소, 가공무역 비중 하락, 그리고 양 국가 간 품목별 경쟁관계 변화를 중심으로 분석하고자 한다. 그리고 중국 경제 성장 둔화로 인해 한국 경제에 미치는 영향에 대해 한국 경제가 대응해야 할 방안을 제시하고자 한다. 이를 분석하기 위해서 한국무역협회 무역통계 시스템을 적극 활용하고, 경쟁력 관계를 분석하기 위해 무역수지기여도지수, 무역특화도지수, 현시비교우위지수 등을 활용하여 분석하고자 한다.

• 한국환경과학회지
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• 제10권2호
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• pp.85-90
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• 2001

The conflicts between environment protection and economic development are becoming increasingly important in environmental decision making of Nakdong River Basin. A science-based evaluation system is now needed to represent both the environmental values and the economic values with a common measure. EMERGY, spelled with an \"m\" evaluates both the work of river and that of human in generating products and services. The monetary cost-benefit analysis and the environmental accounting by EMERGY analysis were applied to determine whether there will have a net benefit in environmental decision making of Nakdong River Basin. Based on the results of the environmental accounting, all alternatives which related to environmental decision making of Nakdong River Basin show that more and more of EMERGY cost becomes needed than the a EMERGY benefit from getting water to drink in the lower basin. From these results, for selecting alternatives to manage water quantity and quality that is sustainable in the environmental use and economic development, environmental accounting concepts must be considered, and the economic structure of Nakdong River Basin should be changed from the present industrial structure to social-economic based on ecological-recycling concept for the sustainable use of Nakdong River.ong River.

• 정보보호학회논문지
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• 제23권1호
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• pp.89-96
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• 2013

최근 여러 차례의 DDoS공격 및 정보유출사태에서 보듯이 사이버공간에 대한 의존성이 높아지고 있다. 산업기밀유출, 사이버 테러, 개인정보유출의 문제 뿐 아니라 국가 간의 사이버 전쟁의 우려가 커지는 등 잠재적 피해범위와 규모도 커지고 있다. 그러므로 이에 대한 대비는 개인과 기업의 이익뿐만 아니라 국가의 안보, 나아가 세계평화와 직결될 만큼 중요성이 커지고 있다. 따라서 사이버정보보호체계의 확립이 시급하며 이를 위하여 사이버피해에 대한 체계적 이해가 필요하다. 따라서 사이버공간의 피해액 추정 방법을 정리하고 이를 바탕으로 정보 보호 대책을 수립하는 것은 중요한 국가적 과제라 할 수 있다. 정보보호의 경제적 효과에 대한 분석은 국가 정보보호 정책을 수립하는 기초적인 자료가 될 것이다. 우리나라의 사이버범죄에 의한 잠재적 피해액은 산정기준에 따라 큰 폭의 차이를 보이지만 대략 10조원에서 40조원 정도의 범위에 있다고 추정해 볼 수 있다.

• 대한교통학회:학술대회논문집
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• 대한교통학회 1998년도 Proceedings The 4th International Transport Symposium
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• pp.65-70
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• 1998

Economic evaluation methodologies for railway investments of China and Korea are comparatively analyzed. Chinese procedures specified in the new economic evaluation manual of 1997 were compared with those of Korea based on the economic evaluation manual of 1982. As expected those procedures reflect general economic requirements of the respective countries. Several differences in the specification are also noted. Details of the specification of Chinese procedure far exceed Korean specification, while Korean manual is rich of explanation on the fundamental theory. Differences in the procedure of calculating benefits of investments are most conspicuous, and specific requirements of carrying out a optimum opening year analysis in Korean procedure is notable. Despite of these differences in the procedure, two methodologies share same objective of ensuring selection of economically and financially sound railway projects. Both procedures of China and Korea, however, limit their evaluation scope on railways alone. Therefore, they are needed to expand scope of evaluation to encompass the idea of multi-modal or inter-modal evaluation, which will eventually contribute to build truly efficient national comprehensive transportation system.