• 한국항만경제학회지
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• 제26권1호
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• pp.1-19
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• 2010

터미널의 운영은 국가와 지역경제에 영향을 미친다. 부산항과 광양항의 11개 터미널로 GICT, KEC, 동부, KIT, 자성대, 신선대, 감만, 신감만, 우암, 감천, PNC 효율성 분석을 위하여 다양한 DEA(Data Envelopment Analysis)기법들을 이용하여 분석하였다. 신선대, 감만(2007년, 2008년), 신감만(2009년), PNC(2009년)터미널이 규모의 효율성이 1로 나타나 효율적인 것으로 나타났다. 특히, 신감만과 PNC는 2009년에 가장효율성이 높았다. 광양항의 GICT(2009), KEC(2009), 동부(2008-2009), KIT(2009)터미널은 낮은 효율성을 가지고 있는 것으로 나타났다. 감만터미널(2009년)이 규모수익체감(DRS)인 것으로 나타났으며 나머지 터미널은 규모 수익체증(IRS)인 것으로 나타났다. 규모 체감인 항만은 운영상의 효율성을 위한 전략이 필요하며, 규모수익체증인 항만은 규모확대를 통한 효율성 전략을 수립하는 것이 요구된다. 신선대 터미널은 2007년과 2009년까지 현재의 투입요소합을 최소 1.5배 이상 늘려도 100%의 효율성을 유지 할 수 있는 것으로 나타났다. 연도별 동태적 효율성 변화추이는 자성대는 계속 상승하고 있다.

• 대한지역사회영양학회지
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• 제23권5호
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• pp.385-396
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• 2018

Objectives: This study aims to evaluate the economic efficiency of a nutrition management program for children under 5 years of age in Kenge, Kwango District, Democratic Republic of the Congo (DR Congo) from 2014 to 2016. Methods: The economic efficiency of a nutrition management program for children under 5 years of age who have recovered from malnutrition status was evaluated using a cost-benefit analysis. The costs were analyzed according to the executed budget incurred during the project period. The benefits were estimated as the monetary value of the saved lives of children under 5 years of age. The economic efficiency of the program was determined by the Benefit-Cost Ratio (BCR). The BCR was calculated by dividing the total discounted benefit by the total discounted costs. The project is economically efficient when the BCR is greater than 1. Results: The costs of the nutrition management program were calculated as 1,677,609,648 Korean Won (KRW). A total of 2,466 children survived with improved malnutrition status through this program. The benefit for the reduction of mortality for children under 5 years of age was estimated to be 6,814,354,467 KRW, the estimated value of life for 2,466 children. The BCR was 4.06. Conclusions: The nutrition management program for children under 5 years of age in DR Congo was found to be a cost-effective project. Successful and efficient Official Development Assistance (ODA) for a health project requires integrated and comprehensive strategies and specialized international development consulting to improve efficiency. Future nutrition management programs should take into account the national health program to maintain the sustainability of the project.

• 한국항만경제학회지
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• 제24권4호
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• pp.25-46
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• 2008

이 연구는 DEA방식을 사용하여 1997년부터 2006년의 기간에 대하여 한국의 5대 항만의 효율성을 측정하고 아울러 맘퀴스트 생산성지수를 측정하고 비교한다. 규모에 대한 수익불변(CRS)과 규모에 대한 수익가변(VRS)을 가정하여 항만의 효율성수준을 측정한다. 부산이 가장 효율성이 높은 항만으로 측정되었다. 발견된 내용은 다음과 같다. 1)부산항, 인천항, 울산항은 CRS와 VRS에서 효율적인 항만으로 나타났다. 2)광양항은 효율적인 항만에 비하여 4.3%정도 낮은 효율성을 보여 주었다. 3)포항항은 효율적인 항만에 비해 27.3% 낮은 효율성을 보여 주었다. 4)한국의 5대 항만의 총요소생산성은 1997년에서 2006년 사이에 매년 3.1%정도씩 낮아졌다. 몇 가지의 정책함의는 다음과 같다. 1)부산항이 광양항보다 효율적으로 나타났는데 이는 두 지역경제의 경제활동의 차이를 반영하는 것으로 보인다. 2)1997년에서 2007년 사이에 한국의 5대 항만은 전반부의 기간에는 1997년의 한국의 금융위기로 인하여 낮은 효율성 수준을 보여주었으나, 후반부의 기간에는 경제회복으로 더 높은 효율성을 시현하였다. 미래의 연구에서는 더 풍부하고 신뢰성 있는 자료를 활용하여 한국의 항만의 특징을 더 잘 이해하도록 다양한 접근방법이 적용되기를 기대한다.

• 한국항만경제학회지
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• 제32권1호
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• pp.165-178
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• 2016

컨테이너 항만은 공급망관리(SCM)에 있어서 연결점(link) 역할을 하고 있어 국제 간 무역에서 중요한 위치를 차지하고 있다. 그러므로 컨테이너 항만의 운영 상태를 파악하기 위하여 컨테이너 항만의 운영 효율성을 평가하는 것은 공급망 관리에 있어서 중요한 일이다. 과거 항만의 효율성을 측정하기 위해 많은 방법을 사용되었다. 그 가운데 자료포락분석(DEA, Data Envelopment Analysis) 방법은 가장 일반적인 방법으로 활용되고 있다. 그러나 DEA 모델에 사용되는 투입, 산출 데이터는 때때로 복잡하고 불확실하기 때문에 기존 DEA모델 사용에 한계점이 존재한다. 이 논문에서는 기존모델의 한계를 해결하기 위해 불확실변수를 취급할 수 있는 불확실성 DEA(UDEA, Uncertainty DEA)모델을 제안하였다. 제안된 불확실성 DEA모델을 이용하여 41개 컨테이너 항만의 효율성을 측정하여 불확실성 DEA 모델의 유효성을 검증하였다. 또한 항만 클러스터링 방법으로 항만의 규모별로 효율성을 측정하여 6개의 컨테이너 항만이 효율성이 있음을 식별하였다. 이와 같이 제안된 불확실성 DEA(UDEA)모델이 기존 DEA모델 보다 효율성 측정에 효과적임을 확인하였다.

• Journal of Advanced Research in Ocean Engineering
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• 제3권4호
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• pp.184-192
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• 2017

The Korea Offshore Wind Power (KWOP) cooperation is planning to construct offshore wind energy farms with an overall rated power of 2.5 GW along the southwestern coast by 2019. Hitherto, various structural types of support structures for offshore wind turbines have been being proposed, but these structures have lacked economic analysis studies. Therefore, their economical superiority to existing types has been difficult to guarantee. An offshore structure with economic efficiency will have a minimum amount of mobilizing equipment and short offshore construction period because of the application of rapid installation methods. Thus, the development of a new support structure with economic efficiency is generally considered to be necessary. Accordingly, this paper proposes a newly developed and more economical jacket type for the offshore support structure. This study confirmed its structural safety and performance by conducting a structural analysis and eigenvalue analysis. The manufacturing and installation costs were then estimated. As a result, the new jacket type of offshore support structure proposed in this study significantly reduced the manufacturing and installation costs. Therefore, it is expected that the proposed jacket will contribute to reducing construction expenses for new wind power farms and invigorating wind power farm businesses.

• 한국환경과학회지
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• 제19권6호
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• pp.787-797
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• 2010

Nowadays meteorological information is systemized as a useful knowledge which has a significant effect on the overall industrial domains over the simple data. The distribution industry, which has the short life cycle, depends on the meteorological information at the strategic level. However, it is necessary to pay attention to the continuous investment in meteorological information because there is a hostility to paying for a service, particularly it does not provide accurate and reliable information. Therefore, the purpose of this study is to increase the usefulness of meteorological information in the distribution industry for its economic effectiveness from the core meteorological factors. We found significant meteorological factors (temperature, precipitation, disaster) that have a critical influence on the distribution industry through the hierarchical analysis process, and their importance according to the type of distribution channels, such as department store, large-scale discount store, convenience store, and home shopping. We performed the AHP analysis with 103 survey samples by middle managers from the various distribution channels. We found that precipitation is the critical meteorological factor across the distribution industry. Based on this result, we stress the difference in the level of the meteorological information in order for the effectiveness of each type of distribution channels.

• 한국측량학회:학술대회논문집
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• 한국측량학회 2004년도 춘계학술발표회논문집
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• pp.527-533
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• 2004

This study has based on RTKGPS and DGPS and Digital Video Camera to 3-dimensional position data of road, as a Road Spatial Information. Economic efficiency analysis was applied to road spatial information system built up by four different methods such as conventional surveying, RTK GPS, DGPS, and Digital Video Camera. As a result of analysis, it was shown conventional surveying 100%, it was shown that about 64% in RTKGPS, it was shown that about 63% in DGPS, it was shown that about 37% in Digital Video Camera cost-saving.

• 융합경영연구
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• 제11권2호
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• pp.13-22
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• 2023

Purpose: The purpose of this study is to examine the policy implications of establishing a compact city in Seoul, analyzing whether it is an appropriate and efficient eco-friendly housing supply alternative. Research design, data, and methodology: The analysis criteria include efficiency, safety, and comfort, with efficiency encompassing economic, energy, and public transport links' efficiency. Safety and comfort are aspects of eco-friendliness, housing safety, and improvement in living environments. Results: In terms of economic efficiency, compact cities are a less expensive option than purchasing land for housing construction. To increase energy efficiency, we plan to adopt eco-friendly energy sources. Transportation efficiency is high in locations near public transport stations. To enhance safety and comfort, we intend to create large-scale parks and forests in Seoul. To ensure residential safety, measures will be taken to reduce road vibration, vehicle noise, and scattering dust. Conclusions: Selecting an appropriate location that provides convenient public transportation is essential for creating a compact city for housing in a large city. Combining a compact and smart city is necessary, and implementing smart technologies is needed to prevent dust, noise, and vibrations, which are undesirable in a residential environment.

• 무역학회지
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• 제45권1호
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• pp.47-64
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• 2020

For the past few years, the Korean government has been consistently expanding its national research & development budget to accelerate economic growth through technology innovation and the enhancement of international competitiveness in global markets. The objective of this paper is to define the concept and analyze the current status of national R&D programs by measuring R&D efficiencies. We determine R&D efficiency by reflecting inputs and outcomes of the five main agricultural R&D programs between 2010 to 2015, and by categorizing and regrouping figures that may affect R&D performance. Among 1,128 targeted projects, 832 projects with patents and thesis were selected for analysis in terms of measuring technology efficiency, pure technology efficiency, and efficiency of scale. Also, the Kruskal-Wallis test was also utilized as well. As a result of empirical analysis, figures that affected the efficiency level of national R&D programs included differences in research resources, research management levels and skills, and research field. This study can be utilized as a reference for re-establishing national agricultural R&D policies, such as enhancement of national technology competitiveness in the global market environment, improving and adapting to new agricultural conditions, market expansion, national agricultural R&D efficiency, aging rural population, agricultural management cost increase, and climate change mitigation.

• 농업과학연구
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• 제43권3호
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• pp.481-495
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• 2016

Lily, which is one of Korea's main flower exports, is one of the most important agricultural product in the country. Korean lily farmers have difficulty earning more profit from producing lilies, because of the high cost of lily bulbs. Most lily bulbs used in Korea are imported from the Netherlands. Thus, the Korean government has kept trying to supply more and better Korean lily bulbs. However, many experts have questioned the efficiency and economic value of the Korean lily production system. The purpose of this paper is to analyze the economic value of the production of lily bulbs in Korea. Especially, this study evaluates the economic value of the production systems of Korean lily bulbs and compares the results from several cases. The results of the present study presents some useful findings, as follows: first, two Korean production areas (Gangneung and Jeju) show a positive economic value but one Korean production area (Taean) presents problems causing a negative economic value. Second, the Korean production area in Vietnam currently has trouble in the view of economic value but will likely overcome that problem. Third, the production area in the Netherlands shows the best economic value. Thus, Korean lily bulb producers need to benchmark that system.