• 제목/요약/키워드: Efficiency Evaluating

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공공부문 정보보호 담당 조직의 운영 효율성 평가 -자료포락분석 기법을 중심으로 (Evaluating the Efficiency of Information Security Organizations in Public Sector Using DEA Models)

  • 박태형;윤기찬;문신용;임종인
    • 정보보호학회논문지
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    • 제20권6호
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    • pp.209-220
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    • 2010
  • 공공부문 성과평가는 조직의 효율성 증진을 중요한 목적으로 삼고 있다. '투입 대비 산출'로 정의되는 효율성을 평가함으로써 향후 조직의 개선방향을 설정할 수 있다. 공공부문 효율성 평가에 유용한 자료포락분석(DEA) 기법을 적용하여 중앙부처 정보보호 담당 조직 21개 의사결정단위(DMU)에 대한 효율성 평가를 수행하였다. 본 연구 결과에 의하면, 평가대상 21 개 DMU의 효율성점수 평균이 50%를 약간 상회하고 있어 효율성이 매우 낮은 것으로 나타났으며, 21개 DMU를 '부'와 '청 및 위원회'로 구분 비교하였을 경우에도 비슷하게 나타나고 있어 비효율의 개선이 요구된다.

전기자동차 에너지효율 평가를 위한 수치해석 연구 (Numerical Analysis Research for Evaluating the Energy Efficiency of Electric Vehicles)

  • 최민기
    • 한국분무공학회지
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    • 제29권1호
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    • pp.1-6
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    • 2024
  • This paper is a numerical analysis study for evaluating the energy efficiency of electric vehicles. Currently, the methods for testing and evaluating the energy consumption efficiency of electric vehicles have limitations such as resources and time. Therefore, there is a need for research on developing models to predict the energy consumption efficiency of electric vehicles. In this study, a numerical analysis research is conducted to predict the energy efficiency of electric vehicles using a vehicle dynamics numerical analysis model. To validate the accuracy of the simulation model, it is compared the results of dynamometer tests with the simulation results and used the Unified Diagnostic Services (UDS) protocol to acquire internal data from the electric vehicle. It is ensured the reliability of the simulation model by comparing data such as motor speed, battery voltage, current, state of charge (SOC), regenerative braking power generation, and total driving distance of the test vehicle with dynamometer test data and simulation model results.

연소실 압력을 이용한 2행정 엔진의 소기효율 측정연구 (A Study on the Evaluation of Scavenging Efficiency in Two- Stroke Engines by Analysis of the In-Cylinder Pressure Data)

  • 김영민
    • 한국자동차공학회논문집
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    • 제7권8호
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    • pp.66-75
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    • 1999
  • In two-stroke engines, methods of evaluating scavenging effciency have been studied in parallel with trials for improvement of scavenging process. But simulating methods have a wide difference with difference with scavenging process in real engines and methods of evaluating scavening efficiency in real engines are very difficult and very expensive. This study shows that there is a possbility of evaluating scavenging efficiency in real engines very easily by analysis of in-cylinder pressure data. And as a characteristics two-stroke engines, the poly tropic indices in the process of compression are varies with degreeof scavenging and good representatives of scavenging efficiency.

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서비스 품질 향상을 위한 컨테이너 터미널의 효율성 평가 모형에 관한 연구 (A Model of Evaluating the Efficiency of Container Terminals for Improving Service Quality)

  • 임병학;한윤환
    • 품질경영학회지
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    • 제32권2호
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    • pp.77-92
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    • 2004
  • It is difficult but very necessary to measure the productivity of container terminals as logistics service provider. It is meaningful to find the appropriate inputs and outputs of the logistics service delivery systems and to measure the relationship between these inputs and outputs. This study proposes a model of evaluating the efficiency of container terminals. The evaluation consists of three phases. First, DEA(Data Envelopment Analysis) phase, determines the efficiency score and weights of DMUs(Decision Making Unit). This phase performs through four steps : selection of DMU, selection of DEA model, determination of input and output factors, calculation of efficiency score and weights for each DMU. Secondly, CEM (Cross Evaluation Model) phase, is to calculate the cross-efficiency scores of DMUs. This phase performs through three steps: selection of CEM, determination of cross-efficiency score for each DMU and development of cross-efficiency matrix. Finally, average cross-efficiency analysis phase is to compute the average cross-efficiency score. The proposed model discriminates among DMUs and ranks DMUs, whether they are efficient or inefficient.

Predictive Model for Evaluating Startup Technology Efficiency: A Data Envelopment Analysis (DEA) Approach Focusing on Companies Selected by TIPS, a Private-led Technology Startup Support Program

  • Jeongho Kim;Hyunmin Park;JooHee Oh
    • International Journal of Advanced Culture Technology
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    • 제12권2호
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    • pp.167-179
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    • 2024
  • This study addresses the challenge of objectively evaluating the performance of early-stage startups amidst limited information and uncertainty. Focusing on companies selected by TIPS, a leading private sector-driven startup support policy in Korea, the research develops a new indicator to assess technological efficiency. By analyzing various input and output variables collected from Crunchbase and KIND (Korea Investor's Network for Disclosure System) databases, including technology use metrics, patents, and Crunchbase rankings, the study derives technological efficiency for TIPS-selected startups. A prediction model is then developed utilizing machine learning techniques such as Random Forest and boosting (XGBoost) to classify startups into efficiency percentiles (10th, 30th, and 50th). The results indicate that prediction accuracy improves with higher percentiles based on the technical efficiency index, providing valuable insights for evaluating and predicting startup performance in early markets characterized by information scarcity and uncertainty. Future research directions should focus on assessing growth potential and sustainability using the developed classification and prediction models, aiding investors in making data-driven investment decisions and contributing to the development of the early startup ecosystem.

한국철도의 상대적 운영효율성 평가 (Evaluating the Relative Operational Efficiency of Korean National Railroad)

  • 김성호;홍순흠;최태성
    • 한국철도학회:학술대회논문집
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    • 한국철도학회 2000년도 추계학술대회 논문집
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    • pp.17-23
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    • 2000
  • The purpose of this paper is to evaluate the relative efficiency of Korean National Railroad (KNR). Railways can be seen as multi-product firms which produced both passenger and freight transportation services. For evaluating the operational efficiencies of 23 UIC (International Union of Railways) members including KNR we use data envelopment analysis (DEA) in which multiple inputs and multiple outputs can be handled explicitly.

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품질경영활동의 효율성을 고려한 평가모형 (Total quality management Activities Evaluation (TAE) Model by the traditional scoring system and the efficiency measuring system)

  • 유한주
    • 품질경영학회지
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    • 제26권3호
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    • pp.100-107
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    • 1998
  • To evaluate the total quality activities is the most fundamental and critical process as one of the PDCA cycle. The quality award criteria such as Malcolm Baldrige National Quality Award and Deming Award can be a, pp.ied to the guideline for evaluating quality activities. We can identify several important factors for TQM by referring quality award criteria, but they don't suggest how efficiently implement TQM. In this paper, two methodologies are a, pp.ied to evaluate the TQM activities comparatively. One of them is the traditional scoring system (TSS) by analytic hierarchy process (AHP). TSS is the system which evaluates the performance of TQM by the weighted sum of critical success factors. Several quality award system are typical examples of TSS. The other is the efficiency measuring system (EMS) by data envelop analysis (DEA). DEA outperformed other alternative methods to measure the efficiency and it can be a, pp.ied to evaluate the TQM activities. The evaluation system by DEA can be named as EMS. The objective of this paper is to suggest a model called TAE (Total quality management Activities Evaluation), for evaluating TQM activities. In this model TQM organizations are classified into four types by considering TSS and EMS. Those types are high weighted sum and high efficiency type, high weighted sum and low efficiency type, low weighted sum and high efficiency type, and low weighted sum and low efficiency type. Therefore TQM organizations must not only make efforts to get the higher scores in terms of TSS, but also take necessary steps to enhance their efficiencies.

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DEA와 BSC 기법을 이용한 조직 효율성 비교에 대한 연구 (A Combined DEA-BSC methodology for evaluating organizational efficiency)

  • 김범수;장태우;신기태;박진우
    • 산업경영시스템학회지
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    • 제28권2호
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    • pp.18-26
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    • 2005
  • The balanced scorecard(BSC) overcomes the limit of traditional financial statement that focuses on only financial performance. BSC is widely used in government and industry because of the clear representation of the relationship and logic between the key performance indicators(KPI) of 4 perspectives - financial, customer, internal process, and loaming and growth. However, traditional BSC does not consider evaluating the difference between the results measured by BSC. By using relatively small number of inputs and outputs In comparing decision-making units, data envelopment analysis(DEA) can aggregate multiple performance measures. In this research, we propose a methodology named CDB(Combined DEA and BSC) to evaluate the performance of organization considering financial and non-financial perspectives. CDB uses KPI of cause-and-effect relationship on BSC as inputs and outputs of DEA method. In addition, this research proposes a method of converting the KPI of BSC to the input and output variables of DEA, and enhancing discrimination power using the limit number of variables. We illustrate the methodology by giving an example of evaluating aquisition-unit efficiency in a supply chain.

전자정부 포털사이트 평가요인에 관한 연구 (A Study on the Factors for Evaluating e-Government Portal Sites)

  • 한기훈;홍일유
    • Asia pacific journal of information systems
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    • 제16권1호
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    • pp.23-43
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    • 2006
  • By far, numerous e-government projects requiring huge investments have been conducted in Korea to increase the administrative efficiency and improve the service quality via Internet. However, there's little research focusing on methods and techniques for analyzing and evaluating the projects either to economically justify the investments or to assess the quality of the system and of on-line services to citizens. The purpose of this paper is to suggest a set of factors to take into account for evaluating e-government portals and to empirically test the factors to provide useful implications for building such portals. Based on the literature reviewed, we constructed a research model that includes content, public service, community, design, technology, and portal's attributes as independent variables and the user's satisfaction and the administrative efficiency as dependent variables. A reliability test revealed that the evaluation factors proposed in the paper are sufficiently reliable, and a multi-regression analysis indicated that five hypotheses should be accepted. The findings of the study suggest that emphasis should be placed on public service quality and portal site attributes, among others, when implementing portals.

멀티형 에어컨의 기간에너지소비효율 평가규격에 관한 연구 (An Overview on Standards for Seasonal Performance Evaluation of Multi-type Air Conditioners)

  • 박윤철;문제명;홍주태
    • 설비공학논문집
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    • 제16권1호
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    • pp.91-100
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    • 2004
  • Energy efficiency evaluation method for a multi-type air conditioning system still has not been developed. In this study, analysis on capacity range and evaluating method of standards for air conditioners was conducted with world-wide Standards. It is not a proper approach to use the standards for residential air conditioner to multi type air conditioners. Some difficulties and problems are commented in this study with overview of the standards. Through the analytic research, an evaluating method for multi type air conditioner was suggested with Integrated Part Load Value (IPLV). The suggested concept for evaluating energy efficiency during part load condition considers building load pattern and operating hours of the system at different locations. Load was weighted in IPLV to consider not only the concept of occurrence of outdoor temperature such as bin method but also operation hours of the system. An experiment about the IPLV was conducted with variable air volume ducted type air conditioning system and multi-type system through modified code tester to give a glance at quantitative value of the IPLV.