• Title, Summary, Keyword: DEA-Window

Search Result 42, Processing Time 0.037 seconds

EU항만의 효율성에 관한 연구 (DEA와 Shannon's Entropy의 통합모형과 DEA-Window 분석을 이용하여)

  • Park, Ho;Kim, Dong-Jin;Kim, Yul-Seong
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
    • /
    • /
    • pp.109-111
    • /
    • 2012
  • 한-EU FTA 발효 등은 교역 확대가 예상되며, 항만의 역할은 더욱더 중요해 질 것이다. 항만의 성과를 측정할 수 있는 방안으로 DEA를 활용한 효율성 측정을 들 수 있으며, 본 연구에서는 DEA 측정 시 모형 선정의 어려움과 동태적 효율성을 변화를 분석하기 위해 DEA와 Shannon's Entropy 결합모형으로 효율성을 분석하고, DEA-Window 모형으로 동태적 효율변화를 분석하였다.

  • PDF

Trends in the Efficiency of Korean National University Libraries : A DEA/Window Analysis Approach (DEA/Window를 이용한 국립대학도서관의 효율성 추세변화 분석)

  • Han, Ha-Neul
    • Journal of Information Management
    • /
    • v.40 no.3
    • /
    • pp.41-60
    • /
    • 2009
  • This study utilizes DEA/Window analysis in order to investigate the relative efficiency levels of korea national university libraries during the period of transition 2004-2008. The empirical results show the following findings. Firstly, a technical efficiency was not efficient which was a scale efficiency rather than a pure technical efficiency in 2008. Secondly, a technical and pure technical efficiency has increased steadily from 2004 to 2008(but a technical, pure technical efficiency has decreased since in 2008). As a result, a technical efficiency increase can be explained by a pure technical efficiency increase.

Static and Dynamic Analysis of Efficiency of Korean Regional Public Hospitals (지방의료원의 효율성에 대한 정태적 및 동태적 분석)

  • Kim, Jong-Ki;Jeon, Jinh-Wan
    • Korea Journal of Hospital Management
    • /
    • v.15 no.1
    • /
    • pp.27-48
    • /
    • 2010
  • The purpose of this paper is to analyze the efficiency change and its determinants of the regional public hospitals. We utilize 34 regional public hospital's panel data for 6 years from 2003 to 2008. We use DEA(Data Envelopment Analysis)-CCR, BCC model, DEA/Window model, and DEA Profiling. The empirical results show the following findings. First, technical efficiency shows that approximately 3.6% of inefficiency exists on the regional public hospitals and it reveals that the cause for technical inefficiency is due to scale inefficiency. Second, DEA/Window results show that the stable dissimilarity by standard deviation, LDP of CCR. Third, the results of partial efficiency by DEA Profiling show that increase efficiency depends on the number of beds, doctors, and nurses.

  • PDF

Measuring Operational Efficiency of Korean Online Game Companies with DEA Window Analysis (DEA Window 분석을 이용한 국내 온라인 게임 기업의 운영 효율성 평가)

  • Chun, Hoon;Lee, Hakyeon
    • Journal of the Korean Operations Research and Management Science Society
    • /
    • v.39 no.3
    • /
    • pp.23-40
    • /
    • 2014
  • This paper measures the operational efficiency of domestic online game companies and analyze its trends and patterns by using data envelopment analysis (DEA). DEA is a non-parametric approach to measuring the relative efficiency of decision-making units (DMUs) with multiple inputs and outputs. 14 online game companies are selected as DMUs and three inputs (number of employees, capital and asset) and three outputs (sales, operating profit and net profit) are selected as DEA variables. First, the output-oriented BCC model and super-efficiency model are employed to measure the static operational efficiency of the online game companies from 2003 to 2012. We also conduct the dynamic analysis with DEA window model to capture the trends of their operational efficiency influenced by internal and external environmental changes. The results are expected to provide fruitful implications for strategic decision making of online game companies and policy making for the online game industry.

Using DEA/Window Analysis to Measure the Relative Efficiency of Local Government over Times: Focusing on Districts of Busan Metropolitan City (DEA/Window 분석을 통한 지방 자치단체의 시대별 효율성 변화에 관한 연구: 부산광역시 자치구를 중심으로)

  • Leem, Byung-Hak;Hong, Han-Kuk;Im, Kwang-Hyuk
    • The Journal of the Korea Contents Association
    • /
    • v.9 no.7
    • /
    • pp.276-284
    • /
    • 2009
  • This paper applies DEA windows analysis in order to determine the efficiency of the Districts of Busan Metropolitan City over time for 5 years (2003 - 2007). This paper used such factors including Number of solutions of civil petitions, Local Tax Collection, and Financial Independent rate as output, Total Labor Costs, Government Employees, Population and Expenditure as inputs. This study concludes that the efficiency of the different District can fluctuate over time to different extents and efficiency of most District decreases from 2003. Indeed, the empirical results reveal that substantial inefficiency exists in some Districts at some point in time. In consequence, this validates the necessity for using DEA windows analysis in preference to an analysis based upon cross-sectional data. This paper shows that Districts' efficiency decreases as Window goes to 1 to 3.

Analysis of Efficiency and Productivity Changes for Mail Centers Using DEA-Window Analysis and Malmquist Productivity Index (DEA-Window 분석 및 Malmquist 생산성지수를 사용한 우편집중국 효율성 및 생산성 변화 분석)

  • Lee, Jae-Seol;Goh, Hyun-Woo
    • Journal of the Society of Korea Industrial and Systems Engineering
    • /
    • v.32 no.4
    • /
    • pp.79-86
    • /
    • 2009
  • The purpose of this paper is to analyze the 24 mail center's efficiency and productivity changes from first quarter to fourth quarter of 2008 using window analysis and Malmquist productivity index. Row views of window analysis results make it possible to determine trends and/or observed behavior with the same data set, and column views to examine the stability of results across different data sets. Malmquist productivity indexes greater than unity translate into improvements in productivity, and less than unity mean deterioration in performance over time. The results of this study suggest that DEA models under dynamic situations such as window analysis and Malmquist productivity index enable us to comprehend the efficiency and productivity changes over time and to show the direction of improvements.

The Efficiency Analysis of Firms Having Established a Business Intelligence System Using DEA/Time-Window Analysis (DEA를 이용한 기업의 Business Intelligence 시스템 도입 효율성에 대한 비교 평가 연구)

  • Baek, Seong-Hyun;Park, Kwang-Ho;Kim, Tai-Young
    • Information Systems Review
    • /
    • v.17 no.3
    • /
    • pp.113-133
    • /
    • 2015
  • In this paper, DEA analysis is employed to compare and evaluate the relative efficiency of a business intelligence (BI) system among five industrial groups such as IT and financial services, electricity and electronics, energy and chemistry, automotive and heavy machinery, and food and apparel. Especially, this study has analyzed the improving tendency of relative efficiency of the industrial groups since they adopted the BI System using Time-Window Analysis. The research findings show that the energy and chemical industry group tends to be remarkably more efficient than the other groups and the electrical and electronic industry turns out to gradually improve their efficiency since the adoption of the BI system.

A Study on Efficient Evaluation for Before and After of ERP Implementation using DEA in Manufacturing Industry (제조 업종의 ERP 도입 전후에 대한 DEA 상대적 효율성 비교 평가)

  • Hahm, Yongseok;Kim, Tai-Young;Park, Chang-Soon
    • Journal of Information Technology Applications and Management
    • /
    • v.20 no.3_spc
    • /
    • pp.169-185
    • /
    • 2013
  • In this research, for find out how operations efficiency for ERP systems, after introducing ERP to manufacturing firms with DEA technique. According to research analyzed relative time dependent efficiency, using Time Window Analysis. And for company group and the other firm within the each same Industry, the relative effectiveness of each company group establishment was compared using DEA.

Measuring Relative Efficiency of Korean Life Insurance Companies Employing DEA/Window Model (DEA/Window 모형을 이용한 국내 생명보험산업의 상대적 효율성 분석)

  • Lee, Hyung-Suk;Kim, Ki-Seog
    • The Journal of the Korea Contents Association
    • /
    • v.8 no.5
    • /
    • pp.192-206
    • /
    • 2008
  • With many changes such as the increase in telemarketing, internet marketing and enforcement of bancassurance, the Korean life insurance companies have undergone a startling transformation. The purpose of this paper is to measure and analyse the static/dynamic efficiency of Korean life insurance companies employing Data Envelopment Analysis(DEA). As the result of the static efficiency analysis, we provide CCR, BCC and scale efficiency, return to scale, and reference set of Korean life insurance companies in 2004. And we also describe about the trend and stability of their efficiency for 7 years(1998-2004) in the dynamic efficiency analysis.

Port Export and Efficiency of the Regional Economy in Korea (항만수출과 지역경제의 효율성)

  • Kim, Chang-Beom;Lee, Min-Hui
    • Journal of Korea Port Economic Association
    • /
    • v.26 no.3
    • /
    • pp.165-174
    • /
    • 2010
  • DEA converts multiple inputs and outputs of a decision unit into a single measure of performance, generally mentioned as relative efficiency. DEA has been applied successfully as a performance evaluation tool in many fields including manufacturing, banks, pharmacies, and hospitals to name a few. This paper applies the input-oriented DEA model, DEA/Window analysis, and Malmquist indices to the 9 regions in Korea to measure the efficiency and productivity. The empirical results show the following findings. First, the super efficiency indicate that efficiency of Group 2 is greater than Group 1. Second, Malmquist indices show that productivity of Group 2 is less than Group 1. Third, DEA/Window of Group2 show that Chungnam is most stable, while Jeonnam is most unstable.