• 한국항만경제학회지
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• 제38권3호
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• pp.29-51
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• 2022

본 연구의 목적은 국제해사기구(IMO)의 배출규제해역(ECA) 시행에 따른 환경규제가 페리 선사들의 재무지표로 구성된 효율성에 어떠한 영향을 미쳤는지 실증적으로 분석하는데 있다. 이에 따라 본 연구에서는 2004년부터 2017년 까지 북유럽, 지중해, 북미 지역의 8개 페리선사의 재무데이터를 수집하여, ECA가 페리선사의 재무성과에 미친 영향을 효율성의 관점에서 지역별로 추정하였다. 방법론적 측면에서 본 연구의 학술적 기여는 다음과 같다. DEA의 자의적인 변수 선정 문제를 완화하기 위하여 Dyson et al.(2001)이 제시한 변수 선정 기준을 적용했으며, Network SBM DEA 모형을 통하여 기업의 규모를 고려하는 동시에 기업의 수익 창출 과정을 단계별로 구분하여 재무성과를 보다 세밀하게 측정하였다. 또한 BTR 모형을 적용하여 편의(Bias)를 최소화한 결과를 도출하였다. 연구 결과 가장 강한 규제를 받았던 북유럽 선사의 경우 오히려 효율성의 꾸준한 증가가 관측되었다. 북미지역 선사들의 경우 정부지원금이 효율성에 큰 영향을 미친 것으로 드러났으며, 상대적으로 ECA와 유가에 의한 영향은 적었던 것으로 관측되었다. 반면 지중해 지역의 경우 가장 낮은 수준의 규제를 받았음에도 불구하고, 규제 이후로 효율성 값이 낮아지는 모습이 관측되었다. 본 연구는 향후 ECA가 확대될 예정인 아시아의 페리선사와 정책당국에 의사결정의 참고자료로서 기능할 수 있을 것으로 생각된다.

• 시큐리티연구
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• 제5호
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• pp.109-130
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• 2002

As proceeding Munmin and Kukmin's government, it is to bring in regionalism of genernal public administration and police administration, specialization, efficiency issue, demand inventing of audit technique to meet this trends. Especially, according to supporting qualitative improvement of the audit, its environment faced that orienting performance audit emphasis on not the legality but the efficiency more systematic and scientific theory or technique. In order to attain police audit's efficiency through performance audit, this study discussed that scientific management techniques should be applied police audit. Accordingly, the primary purpose of this study is to apply public audit to scientific management technique, bring to light limits in public sector(especially, police sector). To be efficiency audit(namely, performance audit), 1) OR techniques are explained linear programming, network modeling, PERT/CPM, queuing matrix model, simulation, 2) Statistical analysis methods are argued delphi technique, data envelopment analysis(DEA), analytic hierarchical process(AHP), time series analysis models etc.

• Asian Journal of Atmospheric Environment
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• 제5권4호
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• pp.228-236
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• 2011

Since most Green House Gases (GHGs) and air pollutants are generated from the same sources, it will be cost-effective to develop a GHGs reduction plan in combination with simultaneous removal of air pollutants. However, effects on air pollutants reduction according to implementing any GHG abatement plans have been rarely studied. Reflecting simultaneous removal of air pollutants along with the GHGs emission reduction, this study investigated relative cost effectiveness among GHGs reduction action plans in Busan Metropolitan City. We employed the Data Envelopment Analysis (DEA), a methodology that evaluates relative efficiency of decision-making units (DMUs) producing multiple outputs with multiple inputs, for the investigation. Assigning each GHGs reduction action plan to a DMU, implementation cost of each GHGs reduction action plan to an input, and reduction potential of GHGs and air pollutants by each GHGs reduction action plan to an output, we calculated efficiency scores for each GHGs reduction action plan. When the simultaneous removal of air pollutants with the GHGs reduction were considered, green house supply-insulation improvement and intelligent transportation system (ITS) projects had high efficiency scores for cost-positive action plans. For cost-negative action plans, green start network formation and running, and daily car use control program had high efficiency scores. When only the GHGs reduction was considered, project priority orders based on efficiency scores were somewhat different from those when both the removal of air pollutants and GHGs reduction were considered at the same time. The expected action plan priority difference is attributed to great difference of air pollutants reduction potential according to types of energy sources to be reduced.

• 상하수도학회지
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• 제29권3호
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• pp.395-406
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• 2015

This research carried out an analysis on input cost and leakage reduction effect by leakage reduction method, focusing on the project for establishing an optimal water pipe network management system in the Taebaek region, which has been executed annually since 2009. Based on the result, optimal cost-benefit analysis models for water distribution network rehabilitation project were developed using DEA(data envelopment analysis) and multiple regression analysis, which have been widely utilized for efficiency analysis in public and other projects. DEA and multiple regression analysis were carried out by applying 4 analytical methods involving different ratios and costs. The result showed that the models involving the analytical methods 2 and 4 were of low significance (which therefore were excluded), and only the models involving the analytical methods 1 and 3 were suitable. From the result it was judged that the leakage management method to be executed with the highest priority for the improvement of revenue water ratio was installation of pressure reduction valve, followed by replacement of water distribution pipe, replacement of water supply pipe, and then leakage detection and repair; and that the execution of leakage management methods in this order would be most economical. In addition, replacement of water meter was also shown to be necessary in case there were a large number of defective water meters.

• 대한교통학회지
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• 제25권3호
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• pp.55-63
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• 2007

동북아 지역의 경제 규모 및 교역량이 증가하고 대외적으로 물류산업의 환경이 격변하는 상황에서 우리나라 물류산업의 경쟁력은 선진국 및 선진물류기업에 비해 취약하다. 이에 본 연구에서는 물류산업의 현황파악 및 경쟁력 향상 방안도출을 위해 DEA-ANP 결합모형을 이용하여 우리나라 물류산업의 상대적인 효율성을 분석하였다. 투입변수로는 종업원수, 고정자산, 자본총계, 운영비용을 산출변수로는 매출액과 당기순이익을 사용하였다. 분석결과 2003년부터 2005 년까지의 효율성 평균은 0.175로, 현재 투입물의 17.5%만을 효율적으로 사용하고 있는 것으로 나타났다. 또한 효율성이 가장 높은 업종은 전체 효율성 평균이 0.3692인 해상운송업으로. 매출액 및 효율성 상위그룹에서 차지하는 비율도 크게 나타나 해상운송업이 우리나라 물류산업의 효율성에 가장 큰 영향을 미치는 것으로 나타났다. 우리나라 물류 산업전반에 걸쳐 존재하는 비효율을 개선하기 위해서는 종업원 수의 과다투입을 줄여야 하며 매출액 증대를 위해 물류업체의 대형화 및 전문화를 통한 서비스 영역 확대. 지속적 투자, 활발한 해외진출 및 물류 수요 유치등의 노력이 필요하다.

• 산업경영시스템학회지
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• 제44권3호
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• pp.248-261
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• 2021

Scientific and technological performances (e.g., patents and publications) made through R&D play a pivotal role for national economic growth. National governments encourage academia-industry cooperation and thereby pursue continuous development of science technology and innovation. Increasing R&D-related investments and manpower are crucial for national industrial development, but evidence of poor performance in business performance, efficiency, and effectiveness has recently been found in Korea. This study evaluates performance efficiency of the 6T sector (Information Technology, Bio Technology, Nano Technology, Space Technology, Environment Technology, Culture Technology), which is considered a high-potential promising industry for the next generation growth and currently occupies two thirds of the national R&D projects. The study measures the relative efficiency of R&D in a comparative perspective by employing the Data Envelopment Analysis (DEA) method. The result reveals overall low efficiency in basic R&D (0.2112), applied R&D (0.2083), development R&D (0.2638), and others (0.0641), confirming that economic performance and efficiency were relatively poor compared to production efficiency. Efficient R&D needs policy makers to create strategies that can increase overall efficiency by improving productivity performance and quality while increasing economic performance.

• International Journal of Computer Science & Network Security
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• 제21권1호
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• pp.201-206
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• 2021

The significance of high-quality development and green total factor productivity has attracted widespread attention and research, while few studies on green total factor productivity that considers the use of water resources have been conducted in the context of water shortages and water stress. In this study, the green total factor productivity of water use from 2005 to 2015 in mainland China is evaluated based on the global Malmquist-Luenberger productivity index. Results show that: (1) China's green total factor productivity of water use has been improving since 2005 with an annual global Malmquist-Luenberger productivity index of 1.0104. (2) At the regional level, the eastern zone in mainland China owns the highest green total factor productivity of water use, while that in the intermediate zone ranks last. (3) The green total factor productivity of water use in the southern region (1.0113) significantly higher than that in the northern region (1.0095), and also higher than the national average level in the same period. BPC index has been the most important incluencing factor of green total factor productivity of water use at both national level and regional level since 2011.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2009년도 공동학술대회
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• pp.147-148
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• 2009

오늘날 전반적인 산업분야에서 정보기술을 바탕으로 운영되고 이에 대한 기대와 투자가 증가되고 있다. 물류산업에서도 물류정보망의 중요성이 커지고, 효율적으로 운영하는데 정보화투자가 증가되고 있다. 하지만 대부분 고정자산에 대한 효율성 분석으로 이루어져, 정보화수준이 효율성에 미치는 영향에 관한 연구는 미흡하다. 본 연구는 컨테이너 터미널 효율적 운영을 위하여 정보화수준평가의 중요성을 제시하고 DEA를 이용하여 정보화수준에 대한 상대적 효율성을 측정하였다.

• 품질경영학회지
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• 제44권4호
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• pp.785-798
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• 2016

Purpose: This paper developed the framework for extracting strategies of research and business development (R&BD) based on the data envelopment analysis(DEA). Methods: DEA has been widely utilized in evaluating R&D efficiency. Even though, technology transfer and commercialization has been regarded as the important factors for practical R&D efficiency evaluation, most research have evaluated R&D efficiency by just using the DEA outputs such as the number of patents and papers. The technology transfer, commercialization and relations among costs and generated technology and commercialization are needed to be considered for more practical R&D efficiency evaluation. Thus, this research addressed a method on how to incorporate the commercialization factors into the R&DB efficiency evaluation, and improve the efficiency strategically in terms of R&D and B&D. To achieve this, this research utilized a two-stage network DEA model for R&BD efficiency evaluation. Results: The proposed framework was applied to the 15 public research institutes and the 34 universities for validation. R&BD efficiency for the 15 public research institutes and the 34 universities was evaluated, and the differentiated improvement strategies for the inefficient DMUs to improve their efficient were proposed. Conclusion: The R&BD efficiency would be effectively analyzed based on two-stage network DEA. It would be utilized for the effective strategy planning for cultivating R&BD.

• 한국산학기술학회논문지
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• 제12권10호
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• pp.4354-4358
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• 2011

많은 국내 건설 회사들은 지속되는 건설 경기 침체로 힘든 시간을 보내고 있다. 따라서 건설기업들이 어려운 상황 속에서 살아남기 위해서는 효율적인 운영과 경쟁력 강화를 위한 경영 효율성의 분석이 필요하다. 본 논문에서는 국내 상장건설기업 효율성을 분석하기 위하여 ANP와 DEA의 결합모델을 제안한다. DAE에서 가장 중요한 투입요소와 산출요소를 결정하기 위하여 ANP 모델을 적용하여 투입요소와 산출요소의 중요도를 평가한다. 그리고 비효율성을 갖는 그룹으로 분류된 기업들에 대해서는 효율성을 갖는 벤치마킹 기업들과 이들 그룹으로 이동하기 위하여 개선해야할 효율성 수치를 제공한다. 본 연구에서는 KOSPI에 상장된 36개와 KOSDAQ에 상장된 21개로 구성된 57개의 건설기업을 분석하였다. 분석결과 CCR 모형에서 효율적으로 선정된 기업은 총 11개였고, BCC 모형에서는 총 14개 기업이 효율성을 가지고 있었다. 추가적으로 규모의 효율성이 1인 기업은 19개 기업이었다.