• Journal of the Korea Academia-Industrial cooperation Society
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• v.11 no.6
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• pp.2129-2137
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• 2010

In this research, we analyze the efficiency of 20 public health centers of Gyeongnam Province, so the reduction and weakness of input and output factor were found. We used the CCR, BCC model of Data Envelopment Analysis as a method of evaluation, made a choice human resource as the input variable, made a selection the performance of health care center, ward as the output variable. The results show that 12(60%) public health centers in 20 were productive with respective to overall Technical Efficiency(average score 0.868), 14(70%) with respective to overall Pure Technical Efficiency(average score 0.924) and 12(60%) with respective to overall Scale Efficiency(average score 0.933). It is expected that this research can provide a good data for effective management of public health centers.

• Proceedings of the KSR Conference
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• 2011.05a
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• pp.1262-1274
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• 2011

Urban railway started its operation in August 15, 1978 in Korea. Nowadays, it is being operated in Seoul, Busan, Incheon, Deagu, GwangJu, and Daejeon, and it is playing a major role in mass transportation. Urban railways can provide rapid and convenient transportation to citizens in eco-friendly and energy saving way. However, urban railway operating organizations have been in financially difficult conditions due to the enormous debts borrowed for the construction of railways. Urban railway operating organizations are under pressure to improve its difficult financial conditions through the efficient management of the organization. The management and operation efficiency of urban railway organizations have been evaluated since 1993 by Ministry of Public Administration and Safety to make those organizations more competitive, responsible and efficient. However there are some limitations in evaluation since they do not reflect the relative size of organizations, relative newness of facilities, etc so that it's not objective and loses fairness. This study proposes an improved method for the evaluation of safety.

• Journal of the Earthquake Engineering Society of Korea
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• v.10 no.6 s.52
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• pp.47-56
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• 2006

A method is presented for evaluating the economic efficiency of a semi-active magneto-rheological (MR) damper system for cable-stayed bridges under earthquake loadings. An optimal MR damper capacity maximizing the cost-effectiveness is estimated for various seismic characteristics of ground motion. The economic efficiency of MR damper system is addressed by introducing the life-cycle cost concept. To evaluate the expected damage cost, the probability of failure is estimated. The cost-effectiveness index is defined as the ratio of the sums of the expected damage costs and each device cost between a bridge structure with the MR damper system and a bridge structure with elastic bearings. In the evaluation of cost-effectiveness, the scale of damage cost is adopted as parametric variables. The results of the evaluation show that the MR damper system can be a cost-effective design alternative. The optical capacity of MR damper is increased as the seismic hazard becomes severe.

• Journal of Radiation Protection and Research
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• v.38 no.4
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• pp.172-178
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• 2013

In this study, neutron detection efficiency of the UNDA system, which has been developed for study on nuclear material accountancy in a future pyro-process facility, was evaluated by using the MCNPX code. The detection efficiency was evaluated as a function of (1) positions of $^{252}Cf$ neutron source in the axial and radial directions, and (2) thicknesses and locations of the container filled with the depleted uranium materials for two different designs of the UNDA. In the case of $^{252}Cf$ source positions, detection efficiency was distributed from 6.83% to 13.35%. As $^{252}Cf$ source was positioned at upper part in the axial direction, detection efficiency was decreased after a slight increase. On the other hands, as $^{252}Cf$ source was positioned at outer part in the radial direction, detection efficiency was increased. In the case of container thickness, there was a slight decline when the thickness was increased. As the container was located at upper part, detection efficiency was decreased and as the container was located at outer part, detection efficiency was increased. Detection efficiency was varied from 10.31% to 13.61%. These values were higher than that of $^{252}Cf$ source case. The UNDA with polyethylene cover has about 2% higher detection efficiency than the UNDA without the cover.

• Journal of the Korean Society for Library and Information Science
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• v.39 no.1
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• pp.221-239
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• 2005

This Paper assesses the relative efficiency of public library services by examining the relationship between library inputs and library outputs in library systems. Using Data Envelopment Analysis, this study derives efficiency scores in the provision of library services for 21 public libraries in Seoul. The data are survey observations for 2002. We employ total holdings, total serials, and total acquisitions as inputs, and total circulations and reader visits as outputs. The result shows that the subject libraries operate at just $71\%$ efficiency, i.e., inputs could be reduced by one-three without sacrificing output if all libraries were as efficient as the benchmark 4 identified by DEA. Too many total collections are the main source of inefficiency.

• Convergence Security Journal
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• v.18 no.5_1
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• pp.25-32
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• 2018

Cyber hackings are increasing and becoming more intelligent. The government and private companies conduct various information protection activities by investing lots of money and employing security personnel to protect import ant assets and personal information. It is important to evaluate the efficiency of the information protection activities that cost lots of money and manpower. However, the studies on the efficiency of the information protection activities were mainly conducted for government agencies the information of which is more readily available. This study suggests a model that can evaluate the efficiency of the activities of information protection and information security certification of various private companies. Our model evaluates the efficiency of the information protection activities by applying AHP and DEA on the information that are publicly announced by the private companies. Our model identifies the DMUs that are efficiently operated and suggests the improvement policies for the DMU that are non-efficiently operated.

• Journal of the Korea Society of Computer and Information
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• v.28 no.9
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• pp.159-165
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• 2023

This study aims to analyze the changes in the management efficiency of public institutions in time series, and to examine the relationship with financial performance based on the results of time series changes. Specifically, we classified into upper and lower groups of financial performance based on the government's management evaluation results, and analyze how the management efficiency of each group changed in the period before the evaluation year. Based on public institutions published in public business information system, DEA(Data Envelopment Analysis) was performed for estimating management efficiency. The results are summarized as follows; First, we find that DEA of the upper group changed in the direction of increasing, but DEA of the lower group changed in the direction of decreasing. Second, we find that there is a significant positive relation between DEA and financial performance. This result means that the higher financial performance, the higher management efficiency. These findings imply that management efficiency can be a factor that improve financial performance in public institutions. The results also suggest that government's innovation strategies to improve financial stability by enhancing management efficiency were effective.

• Proceedings of the Safety Management and Science Conference
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• 2009.04a
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• pp.371-380
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• 2009

본 연구는 국내에 있는 한 금융사에서 사용하고 있는 기존 인사평가시스템을 사례로 하여 시스템 운영자와 사용자(모든 임직원)가 시스템을 효율적으로 운영하고 사용할 수 있도록 인사평가시스템을 재구축하였다. 새로 구축될 인사평가시스템의 효율을 보다 높이기 위해 인사평가 업무와 평가 절차를 분석하고 그러한 평가체계를 기존 legacy 시스템(인사평가시스템)에 어떻게 반영이 되었는지도 분석하였다. 해당 금융사는 기존 평가시스템을 통하여 임원과 직원뿐 아니라, 비정규직원까지 년마다 상반기와 하반기로 나누어 업적과 역량평가를 각각 두번씩 실시하고 있었다. 평가결과는 나중에 보상이나 승진 시에 중요한 고과자료로 활용하고 있었다. 업적과 역량평가 뿐만 아니라, 신업사원을 대상으로 하는 정규직 수습평가와 계약직을 대상으로 한 역량평가 그리고 전직원이 대상인 다면평가도 실시하고 있었다. 그런데 여러 해에 걸쳐 인사평가를 실시하는 과정에서 평가프로세스가 여러 차례 변하였고, 많은 평가대상자를 평가하다 보니 예외적으로 처리해야 하는 경우도 발생하였다. 이런 변화와 예외적인 사항을 기존 Lagacy시스템에 반영하다 보니 평가데이터를 관리하는 테이블이 처음보다는 많이 늘어나게 되어 현재 약 170개에 달하고 있었다. 이렇게 많은 테이블 중에는 당시에는 사용했으나, 현재는 사용하지 않게 된 것도 포함되어 있었다. 프로그램 소스도 마찬가지로 새로운 요구사항과 많은 예외사항 처리로 인해 복잡해지고 프로그램 소스의 수도 늘어나게 되었다. 이로 인해 평가시스템 담당자는 시스템을 관리하기가 복잡해지고, 새로운 변화나 요구사항에 대응하기가 어려운 사항이었다. 그리고 담당자가 시스템 관리에 더 더욱 어려움을 겪게된 것은 시스템 담당자가 여러 번 바뀌는 과정에서 인수인계에 제대로 이루어 지지 않게 되었고 인사평가시스템 관리문서도 시스템 변화에 따른 히스토리 내용이 제대로 관리되지 못하고 있었기 때문이다. 그래서 이번 연구에서는 기존 legacy 시스템의 테이블과 프로그램 소스를 분석하여 방만하게 늘어날 데이터 관리 테이블을 효율적으로 줄이고, 예외적인 사항을 새로운 인사평가시스템에서 포괄적으로 수용할 수 있도록 재설계하였다. 또한 인사평가시스템 운영중에도 사용자(임직원)들로부터 있을 수 있는 예외적 요구사항을 미리 예측하여 운영담당자가 신속하고 정확하게 대응 할 수 있도록 하였다.

• Proceedings of the Korea Technology Innovation Society Conference
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• 2017.11a
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• pp.209-228
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• 2017

사회의 글로벌화와 다원화로 인한 행정수요가 다양화 되고 정책문제가 복잡해지면서 이를 해결하기 위한 부처 간의 협력이 강조되고 있다. 이에 따라 다부처연구개발사업(이하 다부처사업)의 수요가 확대되고 있는 상황에서, 실무적 측면의 다부처사업 추진체계 설계 및 평가를 위한 가이드라인이 필요하다. 이를 위해, 본 연구에서는 연구개발사업의 목적 및 내용에 따른 추진체계 평가방법을 개발하는 것을 목적으로 하였다. 본 연구에서는 추진체계의 효율성 평가를 위해 거래비용 개념을 도입한 평가방법론을 제안하였다. 추진체계를 도입함으로써 절감할 수 있는 거래비용과 발생하는 조직비용의 값을 비교하여 추진체계의 효율성을 분석할 수 있는 평가방법을 설계하였고, Williamson과 Coase의 이론을 도입하여 각 비용을 측정할 수 있는 대리지표를 도출하고 설문을 설계하였다. 전문가를 대상으로 델파이 조사를 진행하여 도출된 대리지표의 기획 평가 관점에 따른 가중치를 설정하였다. 제안한 평가방법의 적용 가능성을 검증하고 보완사항을 도출하고자 현재 추진되고 있는 4개의 다부처사업에 대한 사례연구를 수행하였다. 본 연구는 다부처사업의 추진체계의 효율성을 사전적 및 사후적으로 평가할 수 있는 방법을 제시하였다는 점에서 의의가 있다.

• Review of KIISC
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• v.13 no.6
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• pp.1-5
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• 2003

IT 산업이 급속히 발전하면서 정보보호와 관련된 문제가 중요한 고려 사항으로 대두되고 있다. 이러한 문제 해결의 일환으로 정보보호제품에 대한 수요가 증가하고 있으며, 또한 이들 정보보호제품의 안전 $.$신뢰성이 중요한 이슈로 부각되고 있다. 정보보호제품에 대한 보안성 평가가 이미 시행되고 있지만, 보안성 평가에는 비교적 많은 시간이 소요되므로 개발자가 평가 과정을 거쳐 적시에 제품을 시장에 출시하는 데에는 어려움이 따른다. 본 고에서는 정보보호 제품 개발 프로세스를 공통평가기준에서 요구하는 수준으로 개선하도록 함으로써, 제품 평가 준비 및 평가에 소요되는 비용과 시간을 경감시키고 평가의 효율성을 향상시킬 수 있는 방안을 모색하여 보고자 한다.