• Korean Journal of Construction Engineering and Management
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• v.10 no.1
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• pp.78-90
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• 2009

Recently, operation of highway is the complex digital Infrastructure based on complicated IT. The application of IT is increasing more and more in digital Infrastructure. Though IT is very convenient, if unpredicted operating risk of highway occurs, widespread damage can be large. When operating risk of highway occurs, road users are out of smoothly-run service because of the operating interruption. This risk causes unpredicted operating management cost and additional maintenance cost. It will excess over the planned operating cost, which may leads to users's unsafety and operator's insolvency because of income loss. Until now, related studies to find out the risk are not sufficient. The purpose of this study is to suggest risk cost items and to estimate the reasonable risk cost by using simulation method in case of occurring the huge power failure at the operating digitalized highway. This study indicates the several plans to hedge against risk cost and the management of highway project. From now on, it will be used as basic data to confirm the soundness of operating system in Digital Infrastructure.

• International Area Studies Review
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• v.12 no.2
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• pp.149-173
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• 2008

This paper empirically studies the relationship between R&D expenditures and firms value. First, we can conjecture that R&D expenditures are enhancing the firms value. Such findings depend on an existing research, which R&D expenditures are intangible asset rather than expenses. Although, under U.S. accounting standards, financial statements do not report intangible assets but costs. Second, we can conjecture that short-term, the rate of increase in R&D expenditures had negative influence on firms valuation, because such findings indicates that R&D spending of costs incur mis-pricing. But long-term, consistently R&D expenditures may attract investors on the stock market. Third, lately firms focus on capital efficiency management, such a firms R&D expenditures incur high ROE. Generally investors put too much confidence in capital efficiency management and high ROE may attract investors on the stock market. Finally, High-Tech through the R&D investment improve firms competitive advantage, by competitive advantage, firms have reduced cost and raised productivity in the end improve firms value.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.41 no.3
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• pp.289-296
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• 2021

The Korean construction industry has been implementing G-SEED, a certification system that evaluates the environmental properties of buildings for the purpose of reducing environmental burdens such as energy and resource consumption and pollutant emissions. Also, creating a pleasant environment in general is one more purpose of G-SEED certification system. However, G-SEED certification in practice is difficult and time consuming due to the complexity of the certification acquisition process coupled with little economic consideration for the materials of each certification item. Therefore, in this study, we present a model for the optimal selection of materials and economic assessment using a genetic algorithm. The development of the model involves building a material database based on life-cycle costing (LCC) targeted at "Application of Indoor Air Pollutant Low Emission Material" from G-SEED. Next, the model was validated using a real non-residential building case study. The result shows an average cost reduction rate of 74.5 % compared with the existing cost. This model is expected to be used as an economically efficient tool in G-SEED.

• Journal of Korean Library and Information Science Society
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• v.43 no.1
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• pp.287-301
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• 2012

This article analyzes the costs and benefits of the seven individuals centers of Foreign Research Information Center. Results of the investment feasibility analysis based on 30 years time span show that 0.99 of BCR (Benefit-Cost Ratio), 5.49% of IRR (Internal Rate of Return), and -507 million Won of NPV (Net Present Value). Sensibility analysis suggests that BCR can be influenced by the journal usage, social rate of discount, and elimination of the duplicate journal among individual centers.

• Journal of Korean Society of Transportation
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• v.21 no.3
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• pp.143-156
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• 2003

도시로의 집중현상에 따라 차량이 증가함으로 한정된 공간에서의 도시교통난이 계속 악화되고 있는 실정이다. 도로상의 불법 주ㆍ정차위반차량으로 인해 차량소통에 불편을 주고, 주거 및 교통환경을 저해하기 때문에 견인업무는 주차정책을 실현시키는 강력한 수단으로써 반드시 필요하지만, 우리나라에서 불법 주ㆍ정차 차량의 견인부분에 대한 연구 및 결과는 극히 미비한 실정이다. 이에 따라 본 연구에서는 우리나라 주요 도시를 대상으로 불법 주ㆍ정차 차량의 견인운행 실태 및 특징을 비교, 견인제도의 문제점을 분석하여 개선방안을 검토하고자 하였다. 이의 내용으로는 각 시에서 추진 및 계획중인 지능형 교통체계(ITS), 버스 정보시스템(BIS) 및 차량 위치 자동 표시기(AVM)를 연계시켜 공차거리를 줄이는 등의 첨단체계를 구축하여 견인차량에 대한 운영을 효율적으로 하여야 할 것이고, 요금의 구조도 서울을 제외한 기존의 3단계 톤급별 요금구조에서 장래 대형차의 견인을 감안한 4단계의 톤급별 요금구조로의 조정방안이 필요하다. 견인비용에 있어서도 대부분의 도시가 수년전의 여건을 근거로 산출한 결과를 기준으로 요금을 징수하고 있어 현실에 맞지 않는 요금체계를 적용시키고 있는 실정이다. 따라서, 견인비용부분에 대하여도 장래의 경제여건을 감안한 탄력적 요금체계를 설정하여 경영합리화를 유도함이 바람직하다. 부가하여, 견인원가에 대한 사례분석 결과는 부천시를 중심으로 하여 현실성 있는 견인비용을 제시코자 하였다.

• Nuclear Engineering and Technology
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• v.26 no.2
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• pp.300-305
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• 1994

TRIGA원자로는 1993년 현재, 세계 13개국에서 52기가 가동중에 있으며. 그70%가 20년 경과하였고, 이미 폐로된 것은 12기이다. 따라서, TRIGA원자로의 폐지(decommissioning)가 새로운 과제로 등장하고 있다. 본 보고는 TRIGA원자로의 폐지에 대한 특징과 문제점 등 그 현황을 조사한 결과가 기술되어 있다. 조사내용으로는 다음과 같은 항목이 검토되어 있다. 1) 폐로의 실시시기, 2) 폐로방법, 3) 폐기물 대책, 4) 사용후 연료 대책, 5) 비용.

• The Journal of the Korea Contents Association
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• v.16 no.9
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• pp.376-385
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• 2016

The purpose of this study is to establish the basis of cash wages calculation of the extra cost for the local characteristics by analyzing the local differences of the extra costs of households with the disabled. It was analyzed by comparing the average population by combining the '2011 Survey on disability' and the '2011 municipal budget with disabilities' to analyze the local difference of the extra costs. The highest region of the extra costs was Incheon, and the highest region of the extra cost preservation was Seoul. The highest region of the disabled budget rate was Daejeon, and the highest region of the disabled per capita budget was Jeju. According to a independent two sample t-test, the disabled budget rate and per capita budget of the highest regions of the extra cost preservation were higher than the lowest regions of the extra cost preservation. With policy proposals first, the increase in cash wages of the extra cost for the local characteristics second, the increase the disabled budget and per capita budget of the local governments third, the plan for a decrease of the extra costs according to the extra cost items of local.

• Korean Journal of Construction Engineering and Management
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• v.12 no.3
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• pp.101-111
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• 2011

Clients ought to Appropriate the cost of quality management for contractors based on Construction Technology Management Act. The costs of safety management and environment reservation are separately estimated. and the quality management cost is added up to secure the construction quality required on sites. However, the sufficient cost for quality management was not allowed to the contractors, due to the viewpoints of the clients that the quality management should be one of the duties of contractors. In addition, an Account-related legislation enacted a provision of the labor cost of quality management as the one that should be included in the indirect labor cost. From the continuous survey the quality management cost is currently estimated by 0.2% of the total project cost and the contractors protest the portion of the quality management cost is insufficient. Thus, this paper aimed to provide the bases of estimation of the actualized quality management cost considering the viewpoint of contractors.

• Journal of the Korea Institute of Building Construction
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• v.20 no.6
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• pp.567-576
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• 2020

This study proposes additional items to be recognized as defects in a defect lawsuit through a case analysis of lawsuit cases in apartment housing. Identifying these defects prevents an unexpected increase in litigation costs, delays in the date of litigation, and emotion repercussions or additional lawsuits. In this study, the defects that were not discovered by the existing occupants and construction companies, but were newly discovered in litigation, were defined as defects in lawsuits. Fifteen cases of lawsuits were analyzed and a total of 77 defects were derived. Each item was then reviewed for location, work type, number of occurrences, and cost. The results were yielded 23 defect items, which were validated by appraisers who directly appraised the cases. In addition, the derived defect factors were analyzed. Finally, the 23 defect items were categorized into 10 main factors which include attributes such as causes of occurrence and characteristics. This can provide an overall area of defects to be considered in addition to existing defect items in the life cycle of the housing. The results of this study can contribute to reducing the actual occurrence of defects and minimizing the disputes in the case of defect lawsuits.

• Journal of Environmental Impact Assessment
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• v.19 no.2
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• pp.197-204
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• 2010

새만금사업, 신행정수도(행정중심복합도시, 세종시), 한반도 대운하사업(4대강 살리기사업) 등과 같은 대형국책사업은 대통령 선거공약으로 제시되었다. 그러한 대형국책사업이 국가의 이익을 위해 꼭 필요한 것으로 제시되었다 하더라도, 그 결과는 좋은 의도와는 다르게 나타날 수도 있다. 대통령 선거후 환경정책기본법과 환경영향평가법에 따라 대형국책사업에 대한 사전환경성검토(전략환경평가)와 환경영향평가가 이뤄졌지만, 예상하지 못했던 정치적, 사회경제적, 환경적 갈등이 발생하였다. 이러한 개발 및 환경 갈등의 원인은 여러 측면에서 찾을 수 있겠지만, 사회경제적 항목을 중심으로 하는 사회영향평가의 미흡을 그 원인으로 제시하는 연구가 많다. 대규모 국책사업을 둘러싼 개발 및 환경 갈등을 해소하기 위해, 우리나라와 외국의 사회영향평가의 현황과 연구 동향을 고찰하고, 국책사업의 주요 쟁점의 분석을 통하여 사회영향평가의 중요성과 필요성을 강조하였다. 그리고 사회영향평가의 도입, 강화, 지침 마련에 대해 다음과 같이 제안하였다. 첫째, 현재의 사전환경성검토(전략환경평가)시에 사회적 통합, 경제적 측면(B/C분석, 비용, 고용 등), 법제적 측면, 한반도 통일이나 국가균형발전 등과 같은 사회경제적 항목을 평가항목에 추가함으로써 사회영향평가를 도입하고; 둘째, 환경영향평가 시에 공공시설, 교육, 교통, 문화재, 경제적 타당성, 고용, 토지이용을 현재의 사회경제평가항목에 추가시켜 사회영향평가를 보다 강화시키고; 셋째, 한국의 환경적, 정치적, 경제적, 사회적, 문화적 상황을 반영하여(사회영향평가의 원리와 지침(가칭))을 마련하도록 한다.