• Title/Summary/Keyword: 자료포락 분석

Search Result 282, Processing Time 0.028 seconds

An Analysis of the Technical Efficiency of Industrial Water Input in Manufacturing (공업용수의 기술적 효율성 분석)

  • Min, Dong-Ki
    • Journal of Environmental Policy
    • /
    • v.8 no.4
    • /
    • pp.37-49
    • /
    • 2009
  • While water management policies in Korea have focused on industrial water demand during the last decade, the amount of industrial water usage has decreased significantly. This paper estimates the technical efficiency of industrial water in order to test whether the reduction of industrial water usage is a result of improving the level of technical efficiency of industrial water. This paper shows that the technical efficiency of industrial water use slightly decreased from 0.5183 in 1998 to 0.4853 in 2003. In addition, these estimates are much less than those of other inputs and so, there is still much room for reducing the amount of industrial water use through improving technical efficiency even though the average productivity of industrial water has improved during this period.

  • PDF

Global Competitiveness Analysis of National Defense Industry - DEA and Malmquist Production Analysis- (국내 방위산업 글로벌 경쟁력 분석 -효율성 및 생산성 중심으로-)

  • Kim, Joon-Young;Hong, Jong-Yi
    • Journal of the Korea Academia-Industrial cooperation Society
    • /
    • v.16 no.12
    • /
    • pp.8378-8385
    • /
    • 2015
  • The interest of global competitiveness for national defense industry. This study analyzes the efficiency and productivity of 45 defense companies in each continent(North America, Europe and Northeast Asia, etc.), including Korea defense companies. It is analyzed by Data Envelopment Analysis(DEA) and Malmquist Productivity Analysis over the period 2009-2013(5 years). The sample companies has been selected on the data avilability among the SIPRI Top 100 arms-producing and military services companies in the world(excluding China) in 2013. It extracts the relative efficiency and Malmquist productivity index of companies and each continent. Based on the DEA and MPI results, this paper estimates the global competitiveness and position of national defense industry and extracts implication. This study can be utilized for improvement of national defense industry and policy planning for cultivating the national defense companies.

Efficiency Analysis of Terrestrial Broadcasters and Comprehensive Programming Program Providers by Additive DEA (Additive DEA 모형을 이용한 지상파방송사업자와 종합편성 방송채널사용사업자의 효율성 분석)

  • Kim, Hyun-Ki;Cho, Young-Sang
    • The Journal of the Korea Contents Association
    • /
    • v.21 no.10
    • /
    • pp.309-321
    • /
    • 2021
  • While total sales of broadcasting business have been increasing, terrestrial broadcasters' sales are stagnant and comprehensive programming program providers(PPs)' sales are increasing. The purpose of this study is to derive implications by analyzing the relative efficiency and super-efficiency of domestic broadcasters in such an asymmetric situation. In this study, we use input and output data of three central terrestrial broadcasters and four comprehensive programming PPs from 2012 to 2019. For the analysis, Additive DEA model and Additive super-efficiency DEA model are used with the assumption of VRS condition since the broadcasting industry is characterized by economies of scale. As a result, we find out that the input excess of tangible assets is the most decisive cause of inefficiency that reduces the efficiency of central terrestrial broadcasters. On the other hand, for the comprehensive programming PPs, the input excess of tangible assets and the output shortfall of total sales are important factors of inefficiency.

An Analysis of Efficiency of Superior Appraisal Corporations Using DEA (DEA 모형을 이용한 우수감정평가법인의 효율성 분석)

  • Lee, Chan-Ho;Kim, Jong-Ki;Hwang, Soo-Jin;Jeon, Jin-Whan
    • The Journal of the Korea Contents Association
    • /
    • v.10 no.12
    • /
    • pp.290-299
    • /
    • 2010
  • This study aims to evaluate the efficiency of superior appraisal corporations using DEA(Data Envelopment Analysis). DEA is known as a method for evaluating relative efficiency of organizations with multiple inputs and outputs. We used CCR-O and BCC-O DEA models to evaluate relative efficiency of superior appraisal corporations. Input variable is number of appraisers, output variables are total sales and net income. Total of 13 appraisal corporations in Korea were selected for this study, and the data were collected from financial reports for 2008 fiscal year. The result of this study is summarized as follows. First, the average of superior appraisal corporation's technical efficiency score is about 88.3% by applying CCR-O model. Second, the average of superior appraisal corporation's pure technical efficiency score is about 90% and scale efficiency score is about 98.2% by applying BCC-O model. According to the result of DEA, the cause of inefficiency is pure technical efficiency.

Efficiency Measurement for Production and Wastewater Abatement Activity Using Network Data Envelopment Analysis: The Case of Korean Industrial Complex (Network Data Envelopment Analysis를 적용한 생산 및 폐수처리 효율 추정)

  • Kim, Kwang-Uk;Hwang, Seok-Joon
    • Journal of Environmental Policy
    • /
    • v.14 no.2
    • /
    • pp.27-47
    • /
    • 2015
  • In this paper, we present a new empirical method to estimate the environmental efficiency of decision making units. We propose a model with a new approach that describes a network process consisting of two stages, production and wastewater abatement based on the data extracted from 51 Korean industrial complexes. Taking into account the inter-dependency of two stages, we show a process how to decompose the environmental efficiency into production efficiency and abatement efficiency. Moreover, our new proposed method can be used to explain the information on network relationship between economic growth and environmental protection.

  • PDF

Multi-criteria Decision Making Method for Developing Greenhouse Gas Technologies Strategically Considering Scale Efficiency: AHP/DEA CCR-I and BCC-I Integrated model Approach (규모의 경제성을 고려한 전략적 온실가스저감기술 개발을 위한 다기준의사결정기법: AHP/DEA CCR-I 및 BCC-I 혼합모형 적용)

  • Lee, Seong-Kon;Mogi, Gento;Kim, Jong-Wook
    • Journal of Hydrogen and New Energy
    • /
    • v.19 no.6
    • /
    • pp.552-560
    • /
    • 2008
  • In 1997, Korean government established the National Energy and Resources Plan, which targeted from 1997 to 2005 with strategic energy technology development. At the end of 2005, Korean government built a New National Energy and Resources Plan preparing for upcoming 10 years from 2006 until 2015 based on energy technology trees comparing with the previous plan, which based on the energy R&D projects. In this research, we prioritize the relative preferences and efficiency by an AHP/DEA CCR-I and BCC-I integrated model approach considering scale efficiency for well focused R&D and efficiency of developing Greenhouse Gas technologies as an extended research from a view point of econometrics as an extended research.

Performance Management for Nursing Organization Using Data Envelopment Analysis: Literature Reviews and Usage Strategies (자료포락분석을 이용한 간호조직 성과관리: 문헌 분석과 활용 전략)

  • Lim, Ji Young;Ko, Gug Jin;Lee, Hyun Hee;Park, Yeon Hong;Yang, In Ja;Choi, Yun Jeong
    • Journal of Home Health Care Nursing
    • /
    • v.22 no.1
    • /
    • pp.59-68
    • /
    • 2015
  • Purpose: The purpose of this study was to analyze nursing research using data envelopment analysis and suggest directions for future research. Methods: We established -criteria literature search. e reviewed 45 from RISS, KISS, National assembly library and NDSL DB. Data were collected on December 17, 2013. developed analytic framework of literature reviews using Yun's study. This framework had 8 items related to approach of data envelopment analysis. Results: literature established -criteria. Average numbers of input and output variables were 2.4 and 4.2, respectively. All selected research conducted efficiency analysis, analysis, and inefficiency analysis. However only 3 research. Conclusion: he results of studysuggest that data envelopment are needed to enhance efficiencies of nursing organization as follows individual nurse's profiling to develop customized performance management plans; patient centered nursing interventions; and financial performance financial reports.

우리나라 컨테이너터미널 운영사의 경영효율성 평가에 관한 연구

  • Gang, Hyeon-Gu;Ryu, Dong-Geun;Son, Bo-Ra;Seo, Yeong-Jun
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
    • /
    • 2011.06a
    • /
    • pp.422-424
    • /
    • 2011
  • 오늘날과 같이 급속히 변화하는 기업경영 환경에서 조직이 생존하고 번영하기 위해 기업의 경영 성과를 향상시켜야 하고 이를 위해서는 생산성 또는 효율성을 꾸준히 평가할 필요가 있다. 본 연구는 평가대상의 상대적 효율성을 측정하기 위해 개발된 DEA(Data Envelopment Analysis) 방법론을 이용하여 국내 컨테이너터미널 운영사의 경영 효율성을 비교 분석함으로써 2007년부터 2009년까지의 터미널 운영사의 효율성 수준을 파악해 보았다. 연구결과 2007년부터 2009년까지 점차적으로 영업이익률이 줄어드는 현상이 나타나는데, 이것은 산출변수에는 큰 변화가 없는 반면 투입변수는 지속적으로 증가하고 있다는 것을 알 수 있다. 이것은 동 기간 사이에 컨테이너터미널 업체수는 증가하였음에도 불구하고 물동량의 증가가 미미하여, 물동량 확보를 위한 터미널 업체들간의 경쟁이 치열해졌다는 것을 알 수 있다. 이러한 경쟁은 하역요율의 단가하락 문제를 발생시켰으며, 이로 인해 업체들의 경영악화가 가속되었다는 것을 의미한다. 본 연구 결과는 물동량 변화에 따른 투입변수의 최적화를 통해 컨테이너터미널 운영사의 경영효율성을 제고하는데 기여 할 것으로 판단된다.

  • PDF

Statistical Characteristics of Bottom Backscattering by a Moving Source at a Shallow Water Site (천해에서 이동음원으로 측정한 해저면 후방산란의 통계적 특성)

  • Park, J.S.;Jurng, M.S.;Chang, D.H.;Choi, J.Y.;Shim, Tae-Bo
    • The Journal of the Acoustical Society of Korea
    • /
    • v.15 no.4
    • /
    • pp.18-23
    • /
    • 1996
  • Fluctuation statistics of scattering strength are not only important because they impact the performance of active sonar systems, but also because they may provide insight into the major scattering process. In this article, analysis of the statistical characteristics of bottom backscattering, measured in shallow water, are presented. The slowly moving experimental sonar was operated at 30kHz to gather data over the bottom. Spatial and temporal correlation functions of the signal amplitudes were measured. The distribution function and probability of false alarm function of the detected envelope of widebeam and narrowbeam signals were measured. An attempt was made to compare the results with existing theoretical models. The result suggests that the statistical characteristics of bottom backscattering fluctuation of moving source is differ from that of fixed source.

  • PDF

Evaluation Efficiency of University libraries though Data Envelopment Analysis (DEA를 이용한 대학도서관의 효율성 평가 -프랑스의 대학도서관을 대상으로-)

  • Kim, Sun-Ae
    • Journal of the Korean Society for Library and Information Science
    • /
    • v.38 no.2
    • /
    • pp.137-160
    • /
    • 2004
  • In order to appreciate the varied activities of university libraries, this study assesses their efficiencies in the process of production and utilization of their services for two consecutive years, 1999 and 2000. Using a Data Envelopment Analysis with exogenously fixed factors, this study analyses separately efficiencies identified. The results show that efficiencies of libraries appear differently according to the year of evaluation, the dimension of evaluation as well as the difference of statute. The specialized libraries as CADIST are definitely higher in terms of use of services. In addition, inefficiency is mainly due to deficits of production of outputs rather than excesses of utilisation of inputs. For example, time devoted to user's training constitutes the most significant potentiality of increase in the production of services.