• 대한전기학회:학술대회논문집
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• 대한전기학회 1998년도 하계학술대회 논문집 C
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• pp.1033-1035
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• 1998

This paper presents a new analytical method for assessing outage cost of composite power system with considering transmission system uncertainty. Composite power system ELDC(CMELDC) was developed and proposed from reliability evaluation of composite power system in order to analysis the outage cost on HLII. In this study, considering the characteristic of each load point, the CMELDC was used for outage cost assessment and reliability evaluation at each load point. The characteristics and effectiveness of this methodology are illustrated by the case study (IEEE-RTS 24Buses).

• 척추신경추나의학회지
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• 제16권2호
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• pp.97-105
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• 2021

Objectives This study is aimed to evaluate cost-effectiveness of treatment of Korean Medicine for whiplash associated disorders (WAD) and to suggest the direction of future research. Methods We searched papers in Pubmed database to use some keywords indicating whiplash injury syndrome, treatment of Korean Medicine and cost-effectiveness. After searching, appropriate papers were selected depending on the exclusion criteria. The selected papers were analyzed in the sections of author, publication year, intervention and control groups, outcome measurement, the list including in the cost, cost-effectiveness, cost-utility and study design. Results Four studies about effect of Korean medicine and 3 studies about economic evaluation were finally included. Acupuncture was effective for balance disorder and neck pain. Economic evaluation studies used analytical decision model or cost-consequence analysis. Cost-effectiveness analysis using visual analog scale and cost-utility analysis using quality adjusted life years were performed. Initiating timing of proper management affected the consequence of treatments. Direct and indirect medical costs including supportive devices, and non-medical costs such as litigation were considered. Conclusions We conclude that studies haven't been conducted so far to evaluate the cost-effectiveness of Korean Medicine in whiplash injury syndrome. Thus, future studies are needed in this section.

• 한국IT서비스학회지
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• 제13권4호
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• pp.169-188
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• 2014

Recently the complexity and difficulty of the IT projects are increasing due to technological and environmental risks, resulting in the adoption of PMO(Project Management Office) onto IT project management practices, including public area projects. For example, the Korean government regulated the application of PMO onto large scale public IT projects. However, since there has been no reliable method to estimate the cost to execute PMOs, a PMO cost evaluation model to support the budget and cost planning of PMO projects is required. Thus, the purpose of this research is to develop a systematic cost evaluation model for PMO projects. We identified the dimensions that determine the PMO execution cost to be the scale of the subject project, the technical difficulty level of the subject project, and the tasks to be executed in the PMO project. Based on the determinants, the PMO execution cost model were developed from historical data and experts opinion. Upon verification, the validity of the developed model has high level of consistency compared with their experiences of real PMO project costs.

• KIEE International Transactions on Power Engineering
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• 제5A권3호
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• pp.286-292
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• 2005

As the power industry moves towards open competition, there has been a call for methodology to evaluate power system reliability by using composite interruption cost. This paper presents algorithms to evaluate the interruption cost of distribution power systems by taking into consideration the failure source and the composite customer interruption cost. From the consumer's standpoint, the composite customer interruption cost is considered as the most valuable index to estimate the reliability of a power distribution system. This paper presents new algorithms that consider the load by customer type and failure probability by distribution facilities while calculating the amount of unserved energy by customer type. Finally, evaluation results of unserved energy and system interruption cost based on composite customer interruption cost are shown in detail.

• 조명전기설비학회논문지
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• 제27권11호
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• pp.7-13
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• 2013

There has been a need for the systematic evaluation of the economic efficiency between conventional fluorescent lamp lighting systems that have been used in tunnels and LED lighting systems. This study has evaluated basic tunnel lighting between the conventional fluorescent lighting systems and the LED lighting system using the evaluation tool of tunnel lighting by Life Cycle Cost (LCC) and using the economic efficiency evaluation method. In addition, the unit discount rate of the LED lighting system and the estimated increase in the price of electricity have made the estimated cost of LCC the same if two luminaires were used in the basic part of the tunnel.

• 한국지열·수열에너지학회논문집
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• 제9권2호
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• pp.25-31
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• 2013

It has become very important for unused energy to be used for building air conditioning. Economic evaluation on energy system by using river water as a heat source, which is one of the unused energy, was carried out. The floor area of the building and the distance between heat source equipment and river was assumed $50,000m^2$ and 200 m. General heat source system using absorption chiller-heater was used for comparing to the energy saving system, and payback period method using initial cost and running cost of two systems, was used to perform economic evaluation. According to development of high capacity of water source heat pump which is appropriate for using river water, initial cost for the system has been reduced. Payback period was about 3.2 years, and this period might be shortened if nation's economic support enact.

• 한국정보과학회논문지:소프트웨어및응용
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• 제27권2호
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• pp.134-147
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• 2000

국.내외적으로 소프트웨어 산업이 활성화되었음에도 불구하고, 정보보호 소프트웨어 시스템의 보안성 평가를 포함한 각종 소프트웨어의 품질 평가 업무량 및 평가 비용 산정에 대한 연구는 부족하다. 본 연구에서는 업무분해구조(EWBS) 방법과 기존의 소프트웨어 개발비 산정 방법을 응용하여, 정보보호 시스템의 평가기준(Common Criteria 또는 ISO/IEC 15408)에 따라 정보보호 시스템을 평가 할 때의 평가 업무량과 평가 비용을 산정하는 프로세스와 도구를 제시한다. 본 연구는 정보보호 시스템의 평가 업무량과 평가 비용의 산정에 중심을 두고 있지만, 본 연구의 결과는 기존의 소프트웨어 개발 프로세스 및 제품의 품질 평가시의 평가 업무량 및 평가 비용의 산정에도 응용될 수 있다.

• 한국콘텐츠학회논문지
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• 제16권8호
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• pp.661-670
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• 2016

건설공사 사후평가는 공공건설사업을 대상으로 수요 공사비 공사기간 기대효과 및 사업관리 내용 등을 준공 이후에 재평가하고, 차후 유사사업 추진 시 그 평가결과를 참고하여 발주청의 시행착오를 줄이기 위한 목적으로 2000년부터 도입되었다. 하지만 용역대가 산정기준이 마련되지 않아 사후평가 용역의 질적 저하 및 분쟁발생의 원인이 되고 있다. 본 연구에서는 사후평가 용역데이터를 기반으로 공사비요율방식 및 실비정액가산방식의 용역대가 산정기준을 제시하였다. 용역대가 분석을 위해 기존의 사후평가 용역비와 공사비를 조사하고 공사비요율방식 및 실비정액가산방식을 통해 산출된 용역비를 비교분석하였다. 분석결과 실비정액가산방식을 통해 산출한 용역비가 공사비요율방식에 비해 더 정확함을 확인하였다. 실비 정액가산방식은 시설물별 사업특성을 반영할 수 있도록 거리보정계수, 면적보정계수, 통합보정계수 등 다양한 보정계수가 적용되었으며, 선형공사(도로, 철도), 비선형공사 I(주택 산업단지), 비선형공사 II(공항, 항만, 댐, 상하수도), 기타공사로 시설물 구분을 세분화하여 산정기준을 제시하였다.

• 한국도로학회논문집
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• 제19권2호
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• pp.103-112
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• 2017

PURPOSES : In this study, field performance evaluation of crack treatment of pavement and the feasibility of surface treatment of pavement are presented. The performance and cost of preventive maintenance methods have been previously verified, and the methods are being used in many developed countries and cities. However, the performance and cost of the system have not been verified in domestic, field applications. Therefore, in order to improve performance, the field performance is evaluated, and a reasonable cost is proposed. METHODS : Visual Inspection was conducted to evaluate the field application and performance of the preventive maintenance method. In addition, the PCI index was calculated from the results of visual inspection of the application area of the surface treatment method, and the performance life of each method was predicted. For the economic evaluation, life cycle cost analysis was performed using the life cycle cost analysis program. RESULTS :In order to evaluate and quantify the field performance of crack repair material, the residue condition of the pavement surface after crack treatment, rather than the performance of the material, is evaluated. In addition, the crack resistance and performance life of surface treatment methods are evaluated. The cost of currently available treatment methods are compared to the common pavement cut and overlay method, and it is determined that the preventive method is not economical based on life cycle cost analysis. CONCLUSIONS :Because of the characteristics of cracking, it is necessary to conduct the evaluation of currently applied methods and the analysis of the cause of damage, by visual inspection. Moreover, in order to evaluate the performance and economic suitability of the currently applied surface treatment methods, it is necessary to acquire information on application sections by monitoring their long-term conditions and performance.

• 한국건설관리학회논문집
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• 제19권4호
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• pp.61-69
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• 2018

원도급계약에서의 공기연장 추가간접비에 대한 연구는 지속되어왔다. 그러나 하도급계약에서의 공기연장 추가간접비 산정방식에 대한 연구는 거의 없는 실정이다. 본 연구는 기존 현장에서 사용되고 있는 공기연장 추가간접비 산정방식과 선행연구에서 제안된 공기연장 추가간접비 산정방식에 대해 고찰하고 모형사례를 분석하여 산정방식을 비교하였다. S-curves형태의 간접비 발생을 반영한 모형사례의 발생상황을 사례별로 제시하여 선행연구에서 제시된 공기연장 추가간접비 산정방식별 산출결과를 비교하였다. 산정방식의 문제점을 고찰하는 과정에서 원사업자의 공기연장 추가간접비 산정방식으로 타당한 것으로 연구된 바 있는, 지연기간 평균실비산정방법이 수급사업자의 공기연장 추가간접비 산정에도 타당하다는 결론을 도출하여 보편적으로 적용될 수 있음을 입증하였다.