• Title, Summary, Keyword: DEA

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DEA Models and Application Procedure for Performance Evaluation on Governmental Funding Projects for IT Small and Medium-sized Enterprises with Exogenously Fixed Variables of Corporate Competency (기업역량을 고려한 외생고정변수를 갖는 IT중소기업 정부자금지원정책 성과평가를 위한 DEA모형 및 활용절차)

  • Park, Sung-Min;Kim, Heon
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.33 no.5B
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    • pp.364-378
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    • 2008
  • Data Envelopment Analysis(DEA) models can be used for performance evaluation on governmental funding projects for IT small and medium-sized enterprises associated with multiple-outputs/multiple-inputs. In order to enhance the accuracy of DEA efficiency scores, DEA models with exogenously fixed variables are required where the corporate competency is taken into account. Additionally, it is necessary to use multiple DEA basic as well as extended models so as to relax the restriction on the performance evaluation to relying on a single DEA model. In this study; 1)a DEA data structure is designed including exogenously fixed variables representing corporate asset, revenue and the number of employees at the point in time that the governmental funding project concerned is initiated; 2)DEA basic as well as extended models are established according to the DEA data structure presented abovementioned; and 3)a case study is illustrated with an empirical testbed dataset. As for the DEA basic models, CCR, BCC, Super-efficiency model are adopted. The DEA extended models are developed based on the models associated with noncontrollable and nondiscretionary variables. In the case study, it is explained a comparison of DEA models and also major numerical outcomes such as efficiency scores, ranks derived from each DEA model are integrated using Analytic Hierarchy Process(AHP) weights. Performance significance with DEA efficiency scores between technical categories are tested based not only on parametric but also nonparametric single-factor analysis of variance method.

An AHP/DEA Hybrid Model for Efficiency Evaluation of Container Terminal (컨테이너터미널 효율성 평가를 위한 AHP/DEA 통합모형)

  • Kim, Seon-Gu;Choi, Yong-Seok
    • Journal of Korea Port Economic Association
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    • v.28 no.2
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    • pp.179-194
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    • 2012
  • In this study, we compared the efficiency of container terminals using DEA. To do this, we designed an AHP/DEA hybrid model using AHP and DEA, and evaluated the efficiency by comparing the container terminal operation company in Gwangyang(KEC, KIT, GICT) and Busan(HBCT, DPCT, KBCT, UPT, Gamman, PNC, PNIT, HJNC, HPNT). The proposed model can control the number of selected promising container terminal by applying DEA-AR model. This model can also improve the credibility of analysis by using objective weights through the AHP application to efficiency evaluation data and normalizing the evaluation data to apply AHP and DEA. The model assumes inputs to be container crane, transfer crane, yard tractor, and reach stacker and output as container traffic. The result shows that DPCT was an efficient DMU.

Using a Hybrid Model of DEA and Decision Tree Algorithm C5.0 to Evaluate the Efficiency of Ports (DEA와 의사결정 나무(C5.0)의 하이브리드 모델을 사용한 항만의 효율성 평가)

  • Hong, Han-Kook;Leem, Byung-hak;Kim, Sam-Moon
    • The Journal of the Korea Contents Association
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    • v.19 no.7
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    • pp.99-109
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    • 2019
  • Data Envelopment Analysis (DEA), a non-parametric productivity analysis tool, has become an accepted approach for assessing efficiency in a wide range of fields. Despite of its extensive applications, some features of DEA remain bothersome. For example DEA is good at estimating "relative" efficiency of a DMU(Decision Making Unit), it only tells us how well we are doing compared with our peers but not compared with a "theoretical maximum." Thus, in order to measure efficiency of a new DMU, we have to develop entirely new DEA with the data of previously used DMUs. Also we cannot predict the efficiency level of the new DMU without another DEA analysis. We aim to show that DEA can be used to evaluate the efficiency of ports and suggest the methodology which overcomes the limitation of DEA through hybrid analysis utilizing DEA along with C5.0. We can generate classification rules C5.0 in order to classify any new Port without perturbing previously existing evaluation structures by proposed methodology.

The prevalence of dog erythrocyte antigen 1 in relation to breed in the Daejeon area

  • Park, Hoill;Han, A-Ram;Choi, Hyung-Tak;Min, Won-Kyu;Yoon, Byung-Gook;Shin, Hyun-Guk;Song, Kun-Ho
    • Korean Journal of Veterinary Service
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    • v.39 no.3
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    • pp.183-186
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    • 2016
  • This study was performed to collect the basic data of DEA 1.1 in four small breed (Maltese, Shih-tzu, Poodle, Yorkshire terrier) and in three large breed (German shepherd, Labrador retriever and Jindo) dogs in the Daejeon area. 105 dogs from 7 breeds (Maltese=20, Shih-tzu=19, Poodle=15, Yorkshire terrier=11, German shepherd=10, Labrador retriever=10, Jindo=20) were selected and tested using the dog blood typing Kit$^{(R)}$ (Korea Animal Blood Bank Inc., South Korea). The prevalence of DEA 1.1 was 83%, that of DEA 1.2 was 17%, and there was no DEA (-) blood type identified in this study. Prevalence according to breeds was Maltese (DEA 1.1, 85%; DEA 1.2, 15%), Shih-tzu (DEA 1.1, 95%; DEA 1.2 5%), Yorkshire terrier (DEA 1.1, 91%; DEA 1.2, 9%), Labrador retriever (DEA 1.1, 90%; DEA 1.2, 10%). One hundred percent of DEA blood type 1.1 was discovered in all of the Poodles and German shepherds, and a higher prevalence of DEA 1.2 was found (DEA 1.1, 40%; DEA 1.2 60%) in Jindo dogs. The prevalence of DEA 1.2 in the Jindo dogs was significantly higher than in other breeds (P<0.01). German shepherds and Labrador retrievers may be more suitable as donor dogs than Jindo dogs in the Daejeon area. Larger scale studies are necessary from more dogs and other areas in South Korea.

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
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    • pp.109-111
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    • 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.

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Empirical Analysis of DEA models Validity for R&D Project Performance Evaluation : Focusing on Rank Correlation with Normalization Index (R&D 프로젝트 성과평가를 위한 DEA모형의 타당성 실증분석 : 정규화지표와의 순위상관을 중심으로)

  • Park, Sung-Min
    • IE interfaces
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    • v.24 no.4
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    • pp.314-322
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    • 2011
  • This study analyzes a relationship between Data Envelopment Analysis(DEA) efficiency scores and a normalization index in order to examine the validity of DEA models. A normalization index concerned in this study is 'sales per R&D project fund' which is regarded as a crucial R&D project performance evaluation index in practice. For this correlation analysis, three distinct DEA models are selected such as DEA basic model, DEA/AR-I revised model(i.e. DEA basic model with Acceptance Region Type I constraints) and Super-Efficiency(SE) model. Especially, SE model is adopted where efficient R&D projects(i.e. Decision Making Units, DMU's) with DEA efficiency score of unity from DEA basic model can be further differentiated in ranks. Considering the non-normality and outliers, two rank correlation coefficients such as Spearman's ${\rho}_s$ and Kendall's ${\tau}_B$ are investigated in addition to Pearson's ${\gamma}$. With an up-to-date empirical massive dataset of n = 482 R&D projects associated with R&D Loan Program of Korea Information Communication Promotion Fund in the year of 2011, statistically significant (+) correlations are verified between the normalization index and every model's DEA efficiency scores with all three correlation coefficients. Especially, the congruence verified in this empirical analysis can be a useful reference for enhancing the practitioner's acceptability onto DEA efficiency scores as a real-world R&D project performance evaluation index.

A Study on the Analysis of Container Ports' Efficiency using Uncertainty DEA model (불확실성 DEA모델을 이용한 컨테이너 항만의 효율성 분석 연구)

  • Pham, Thi-Quynh-Mai;Kim, Hwa-Young;Lee, Cheong-Hwan
    • Journal of Korea Port Economic Association
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    • v.32 no.1
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    • pp.165-178
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    • 2016
  • Container port nowadays becomes one of the most vital link of the transportation chain, plays an important role in trading with other countries. Therefore, evaluating the operational efficiency of container ports to reflect their status and to reveal their position in this competitive environment is very important for port development. Although there have been lots of methods used to measure efficiency in the past, the DEA (Data Envelopment Analysis) model is still the most commonly applied approach. However, the data used in the model sometimes is complex and uncertain to handle using the basic DEA model. In this paper, we applied an uncertainty theory to create an uncertainty DEA model (UDEA), which can solve the limitation of the traditional one. This study mainly focuses on measuring efficiency of 41 container ports by applying proposed an UDEA model. The results show that among 41 container ports, only six container ports are regarded to have efficient operation through the clustering, meanwhile others have technical and scale inefficiencies. We found out that an UDEA model is better to analysis efficiency than existing DEA model.

Analysis of the Efficiency of the Regional Public Hospitals using DEA-AR/AHP Combined Model (DEA-AR/AHP 결합모형을 이용한 지방의료원의 효율성 분석)

  • Yang, Dong-Hyun
    • Health Policy and Management
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    • v.20 no.4
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    • pp.74-96
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    • 2010
  • The purpose of this empirical study is to evaluate efficiency of the regional public hospitals, using DEA(Data Envelopment Analysis). to do this, we design a DEA-AR/AHP Hybrid model to evaluate efficiency of 34 Regional Public Hospitals. the proposed model is developed by adding Acceptance Region(AR). using analytical hierarchy process(AHP). this model is compared with those of typical DEA models. Financial data used in this study were obtained from Database of the Korea Association Regional Public Hospital and analyzed using DEA model. As a result of analysis, This study found that the DEA-AR/AHP Hybrid model was superior to those typical DEA models in determining the priority among efficient hospitals. the result of this study can provide helpful information to evaluate the efficiency of public hospitals for efficient operational management, to develop more precise measurement for the priority of the efficient hospitals.

A Study on Discrimination Evaluation of DEA Models (DEA 모형의 변별력 평가에 관한 연구)

  • Park, Man Hee
    • The Journal of the Korea Contents Association
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    • v.17 no.1
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    • pp.201-212
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    • 2017
  • This study presented the new evaluation index which can evaluate the discrimination of DEA models. To evaluate the discrimination of DEA models, data were analyzed using importance index as suggested in previous study and the coefficient of variation as suggested in this study for the discrimination evaluation. This study selected the CCR-DEA, BCC-DEA, entropy, bootstrap, super efficiency, and cross efficiency DEA model for the discrimination evaluation and accomplished empirical analysis. In order to grasp the rank correlation of the models, this study implemented the rank correlation analysis between the efficiency of CCR model and BCC model and entropy, bootstrap, super efficiency, and efficiency of the cross efficiency model. The obtained results of this study are as follows. First, the discrimination rank of models using the importance index and the coefficient of variation was shown to be identical. Therefore, the coefficient of variation can be used the discrimination evaluation index of DEA model. Second, the discrimination of the super efficiency model was found to be the highest rank among 4 models according to the analysis of this present study. Third, the highest rank correlation with CCR model was the super efficiency model. In addition, the super efficiency model was found to be the highest rank correlation with BCC model.

Prevalence of dog erythrocyte antigen (DEA) 1 among Jindo dogs (진돗개에서 개적혈구항원(dog erythrocyte antigen) 1 혈액형 조사)

  • Lee, Jeong-Chi
    • Korean Journal of Veterinary Service
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    • v.41 no.4
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    • pp.271-276
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    • 2018
  • This study was conducted to investigate the prevalence of dog erythrocyte antigen (DEA) 1 with DEA 1.1 and DEA 1.2 on 122 Jindo dogs (29 males, 93 females) from 2014 to 2015 using a monoclonal antibody card kit (blood typing card kit, Korea Animal Blood Bank Inc., South Korea). Among the tested dogs, 14.8% (18/122) were positive for the DEA 1.1 antigen and 85.2% (104/122) were positive for the DEA 1.2 antigen. The prevalence of positive types for the DEA 1.2 antigen was significantly higher than the DEA 1.1 antigen (P<0.01). The prevalence of positive types for the DEA 1.1 antigen was higher in white-haired Jindo dogs than yellow-haired dogs (P<0.05). However, there was no gender difference in the prevalence of the DEA 1.1 antigen (P=0.665). The incidence of sensitization after the first transfusion without blood group test was 12.6% and the incidence of acute hemolytic transfusion reaction after the second transfusion in the same immunized dogs was 1.6%. Therefore, the blood group test for the DEA 1 antigen should be performed for Jindo dogs to ensure safe and effective transfusion therapy and further studies remain to be conducted for other DEAs among Jindo dogs.