• Journal of Digital Convergence
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• v.12 no.12
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• pp.571-580
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• 2014

Korea's water supply efficiency is low, due to weak industrial structure, such as small scale, regional disparities in the management and services, unreasonable problem in a use and management of interregional water resources. This study investigated changes in the productivity of Jeollabuk-do local water supply service by using analysis of efficiency by data envelopment analysis and Malmquist Index Analysis. As a result, 6 office is showed that the value of scale efficiency is 1 and productivity index per gun in mainly seemed below average. Therefore these offices should strive to increase their productivity. This study is differentiated from earlier studies in the aspect of measuring change of productivity by not only DEA but also Malmquist productivity analysis. Therefore it will contribute to increase productivity of water supply in Jeollabuk-do.

• Proceedings of the Korea Water Resources Association Conference
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• 2016.05a
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• pp.136-136
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• 2016

현재 전 세계적으로 지속적인 인구증가와 도시화 및 산업화 영향으로 물, 에너지, 식량의 수요증가와 공급부족이 예상되는 가운데, 급격한 기후변화와 자원고갈로 인해 이는 더욱 가속화되고 심화될 위기에 직면하였다. 특히 물의 수요는 증가하나 공급은 제한되어 있어 지속가능한 인류의 생존을 위하여 인간에게 꼭 필요한 에너지와 식량의 문제를 물을 중심으로 상관성을 찾고 효율적인 물활용 방법을 개발하고 정책화할 필요가 있다. 세계 물공급량 중 농업으로는 70%, 에너지로는 15%로 소비되고 있다. 또한 유럽과 미국은 발전용 냉각수로 각각 담수총량의 43%, 50%를 사용하고 있는 등, 세계는 물, 식량 그리고 에너지 수급의 불균형이 심화되고 상호 위기가 증폭되고 있다. 향후 인간의 삶에 절대적으로 필요한 세가지 자원이 복합적으로 연계되어 상호 위기가 증폭될 수 있는 실정이나, 우리나라는 개별자원에 대한 관리 및 운영기술은 상당한 수준이지만 아직까지 연계성을 고려하여 자원간의 효율성을 찾는 물-에너지-식량 연계(Water-Energy-Food Nexus, WEF Nexus)에 대한 관리 및 기술은 부족한 실정이다. 국제적으로 세자원의 연계상황이 선진국과 개도국간에 편차가 크고, 사막지대 등 자연조건이 열악한 지역에서 자원들간의 위기 연계성이 높은 상황이므로 우리나라도 물-에너지-식량의 연계위기 상황을 정확히 파악하고 미래 환경변화에 대한 대응방안 수립이 필요하나, 현재 국내 물관리에 있어 저수지나 수리시설 관리가 제대로 실행되지 못하고 있어 이를 방치할 경우 중장기적으로 식량 및 에너지생산에 있어 부족이 우려되고 있다. 또한 부처간의 행정적인 간격으로 물-에너지-식량의 연계성 연구 및 정책수립에 있어서 자료 등이 절대적으로 부족한 실정이기 때문에 체계적으로 빅데이터 기반의 DB구축 및 인벤토리 정의 등도 현재시점에서는 절대적으로 필요하다고 할 수 있다. WEF Nexus를 실현하기 위해서는 각 자원간의 효율성을 극대화하여야 한다. 과거에는 개별적 자원의 확보를 추구했다면 이제부터는 각 자원간의 상생을 통한 연계성을 확보하여 서로간의 자원 확보를 고려하여 개발하여야 한다. 이를 위해 현재의 자원확보에 대한 문제점들을 고려하여, 상호 연계를 통한 효율성을 확보하고 그 효율성이 각 자원에 영향을 주어 시너지효과를 발생시킬 수 있는 방안으로 진행되어야 할 것으로 판단된다.

• Journal of Families and Better Life
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• v.13 no.1
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• pp.79-79
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• 1995

본 연구의 목적은 (1) 가정에서의 소비행동을 자원활용적 측면에서 탐색해 봄으로써 소비의 사용/처분 효율성 개념을 제품군 별로 명료화 하고 (2) 사용/처분 효율성과 인구통 계적 특성 환경보전에 대한 태도와의 차이를 실증하기 위한 것이다 연구대상은 서울시에 거 주하는 주부 400명이며 최종분석에 사용된 자료수는 357부이다 연구에 따르면 사용/처분 효 율성 개념은 상품군(식품, 의류 가전제품) 에 따라 다르게 규정지어야만 함을 알 수 있었다 또한 사용/처분 효율성과 몇몇 인구통계적 변수와는 관련이 있음을 보여주었고 환경보전 태 도는 사용효율성과 정적 관계를 보여주었으나 처분효율성과는 일과성 있는 관계를 보여주지 는 못했다 이러한 연구결과는 소비자 교육 및 재활용정책에 적극 활용할 수 있으리라고 본다.

• Journal of Families and Better Life
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• v.13 no.1
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• pp.78-87
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• 1995

본 연구의 목적은 (1) 가정에서의 소비행동을 자원활용적 측면에서 탐색해 봄으로써 소비의 사용/처분 효율성 개념을 제품군 별로 명료화 하고 (2) 사용/처분 효율성과 인구통계적 특성, 환경보전에 대한 태도와의 차이를 실증하기 위한 것이다. 연구대상은 서울시에 거주하는 주부 400명이며, 최종분석에 사용된 자료수는 357부이다. 연구에 따르면 사용/처분 효 율성 개념은 상품군(식품, 의류, 가전제품)에 따라 다르게 규정지어야만 함을 알 수 있었다. 또한 사용/처분 효율성과 몇몇 인구통계적 변수와는 관련이 있음을 보여 주었고, 환경보전 태도는 사용 효율성과 정적관계를 보여 주었으나 처분효율성과는 일과성 있는 관계를 보여주지는 못했다. 이러한 연구결과는 소비자 교육 및 재활용정책에 적극 활용할 수 있으리라고 본다.

• Journal of Korea Port Economic Association
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• v.32 no.1
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• pp.29-58
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• 2016

The purpose of this paper is to show the clustering trend and the comparison of empirical results and is to choose the clustering ports for 3 Korean ports(Busan, Incheon and Gwangyang Ports) by using the bootstrapped DEA(Data Envelopment Analysis) and game Cross-efficiency models for 38 Asian ports during the period 2003-2013 with 4 input variables(birth length, depth, total area, and number of cranes) and 1 output variable(container TEU). The main empirical results of this paper are as follows. First, bootstrapped DEA efficiency of SW and LT is 0.7660, 0.7341 respectively. Clustering results of the bootstrapped DEA analysis show that 3 Korean ports [ Busan (6.46%), Incheon (3.92%), and Gwangyang (2.78%)] can increase the efficiency in the SW model, but the LT model shows clustering values of -1.86%, -0.124%, and 2.11% for Busan, Gwangyang, and Incheon respectively. Second, the game cross-efficiency model suggests that Korean ports should be clustered with Hong Kong, Shanghi, Guangzhou, Ningbo, Port Klang, Singapore, Kaosiung, Keelong, and Bangkok ports. This clustering enhances the efficiency of Gwangyang by 0.131%, and decreases that of Busan by-1.08%, and that of Incheon by -0.009%. Third, the efficiency ranking comparison between the two models using the Wilcoxon Signed-rank Test was matched with the average level of SW (72.83 %) and LT (68.91%). The policy implication of this paper is that Korean port policy planners should introduce the bootstrapped DEA, and game cross-efficiency models when clustering is needed among Asian ports for enhancing the efficiency of inputs and outputs. Also, the results of SWOT(Strength, Weakness, Opportunity, and Threat) analysis among the clustering ports should be considered.

• Journal of Korean Society of Transportation
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• v.31 no.4
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• pp.67-75
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• 2013

The main objective of the research is to analyse the efficiency of bus route operation system which is comprised of Individual Operation System and Joint Operation System. While the reformation of bus route operation system has been usually considered as a service upgrade strategy for inner-city bus operation, it is comparatively difficult to have background information for policy establishment due to shortage of analytical research output. This study adopts Data Envelopment Analysis technique to estimate efficiency of 101 bus routes in Ulsan Metropolitan City which operates two types of operation systems at the same time as of 2009. The analysis results tells that the reason of inefficiency lies on pure technical factor for J.O.G., and scale factor for I.O.G.. It is also confirmed that there is bus route which inefficiently operated in I.O.G and city government needs to prepare the specific plan to upgrade pure technique efficiency before reformation of bus route operation system for successful installation.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.12
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• pp.473-484
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• 2017

This study analyzed collaborative R&D projects funded by the Korean government from 2013-2015. For this analysis, input and output variables of projects were considered, and a combination of those variables was itemized. The output-oriented variable return to scale (VRS) model extended from the DEA methodology was adopted to evaluate the cooperation efficiency of the types of R&D collaboration, which were classified according to the project leader's organizations. In addition, hierarchical cluster analysis was conducted using the efficiency results of the scientific, technical, and economical outcome models. The results showed that cooperation efficiency between large companies and public research institutions was relatively high. Conversely, cooperation among medium-sized companies, small businesses and universities was particularly inefficient. The clustering results demonstrated the various strengths and weaknesses of the types depending on publications, patents, technical loyalties and the number of commercialization. In conclusion, this study suggests differentiated investment portfolios and strategies based on the efficiency results of diverse cooperation types among industries, universities and public research institutions.

• Environmental and Resource Economics Review
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• v.18 no.2
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• pp.241-277
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• 2009

The purpose of this paper is to compare technical efficiencies and productivities without and with environmental constraints, and shadow prices of $SO_x$ in Korean and Chinese industries. The technical efficiencies without and with environment in Chinese manufacturing industries are higher than those in Korean manufacturing industries for 2000-2004. Most of individual Chinese manufacturing dominate those of Korean manufacturing in levels of technical efficiency. In terms of productivity changes excluding environmental constraints, the rates of annual growth in Korean and Chinese industries show 1.13 percent and 2.73 percent respectively. But Korean industry in productivity changes considering $SO_x$ reduction shows 2.41 percent, higher rate of growth than 1.58 percent of Chinese industry. In the shadow prices of $SO_x$, the reduction of an additional unit of $SO_x$ in the Korean manufacturing needs a decrease of 1.473 unit of output, while the shadow price of $SO_x$ in Chinese manufacturing is 0.0049, close to zero. Korean manufacturing should be specialized in higher sectors of technical efficiency and productivity and be also kept efficient in pollution abatement cost.

• Journal of the Korean Society for information Management
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• v.29 no.1
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• pp.303-329
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• 2012

This study measures the efficiency of public libraries, library services, and management to contribute to the proposed model for efficiency analysis, reflecting the characteristics in public libraries. This analysis model of applying the empirical research pursues the solutions to provide efficiency. Although many attempts have been made domestically and internationally to study the measurement of the efficiency, mere application of analysis techniques used in the other public sectors has led to the inadequate measurement for characteristics of library services. In addition, there has not been any attempt made to deduce a general theory for the study from the measurement results. In this study, an analysis model that reflects the inherent characteristics in library services is suggested to be analyzed empirically, and this leads to the understanding of efficiency factors. The results of the study show that the efficiency of current public libraries can be increased on the basis of input and output. Therefore the commitment to increase the level of output to meet the current need shall continue by the amount, rather than by the commitment to reduce the level of input. Finally, the factors influencing the efficiency are the number of users, the physical environment, professional staffs, events planning, and electronic resources. After analyzing the five factors via multiple regression analysis, three factors such as the number of users, professional staff and events planning proved causal relationship with the efficiency.

• Journal of Digital Convergence
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• v.19 no.12
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• pp.21-28
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• 2021

The purpose of this study is to analyze the efficiency of the policy direction to see if the government's purpose of relocating public institutions was achieved by analyzing the case of the Korea Housing Finance Corporation, which moved to Busan Metropolitan City in 2014. Based on the Korea Housing Finance Corporation's settlement management disclosure and public institution performance evaluation report from 2009 to 2019, efficiency was compared and analyzed using DEA analysis, work efficiency in management performance evaluation report, and financial ratio. The analysis results are as follows. First, in the case of DEA analysis, the difference in efficiency before and after fat transfer was not noticeable. Second, the efficiency analysis using the performance evaluation report and the financial ratio showed that the efficiency decreased after local relocation. Taken together, in the case of the Korea Housing Finance Corporation, efficiency decreased after local relocation, which can be attributed to sluggish business performance and inefficiency related to financial ratios. However, this study has limitations because it conducted an analysis on the Korea Housing Finance Corporation. To compensate for this, it is necessary to diversify the scope of research targeting all fund-managed quasi-governmental institutions in Korea. Nevertheless, this study is the first study to analyze before and after the relocation of fund-managed quasi-governmental institutions, and is expected to provide significant implications for future policies to be discussed.