• 국제학술발표논문집
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• The 6th International Conference on Construction Engineering and Project Management
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• pp.376-380
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• 2015

Life-Cycle Cost Analysis (LCCA) for highway projects is known as an effective analytical technique that uses economic principles to evaluate long-term alternative investment options, especially for comparing the values of alternative pavement design structures and construction strategies. In the Unites States, the 2012 Moving Ahead for Progress in the 21^st Century Act (MAP-21) amended the United States Code to mandate that the United States Government Accountability Office (GOA) conducts a study of the best practices for calculating life-cycle costs and benefits for the federally funded highway projects in 2013. The RealCost 2.5CA program was developed and adapted as an official LCCA tool to comply with regulatory requirements for California state highway projects in 2013. Utilization of this California-customized LCCA software helps Caltrans to achieve substantial economic benefits (agency cost and road user cost savings) for highway projects. Proper implementation of LCCA for roadway construction and rehabilitation would deliver noticeable savings of agency's roadway maintenance cost especially in developing counties where financial difficulties exist.

• 한국안전학회지
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• 제25권6호
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• pp.186-196
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• 2010

It has been well known that traffic accidents occur under combined functional contributions of drivers, vehicles and road facilities, and that evaluation of safety levels for a specific road section or point is generally much complicated. Additionally, most of traffic accidents occur randomly implicating it is necessary to be evaluated in terms of probability theory. Thus, the evaluation model which reflects various characteristics and probabilistic distributions of traffic accidents has been necessary. The present paper provides a reliability based model with variables of probabilistic operating speeds and design speeds together which have been individually explaining associated characteristics in traffic accidents. Consequently, the model made it possible for speed management and road improvement projects to be evaluated in a common index. Application studies were performed in three cases. Through the studies, couples of facts were identified that the model successfully considered the probabilistic operating speeds and design speeds together and that then, the model evaluated road safety alternatives relatively which are complicatedly characterized and differently located.

• 한국한의학연구원논문집
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• 제12권2호통권17호
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• pp.47-62
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• 2006

This research is intended to analyze the necessity of the integrated organization for the performance in order to the extension of scale and the systematic promotion concerning to the Korean medicine informational project, and to research the promotional method of Korean Medicine information through the constitution of organization for preparing the informational basic. There are three main important subjects to be done in this research project. The initial issue is to devise a comprehensive and systematic plan of Korean medicine information according to the Korean Medicine Rearing Raw('03. 8). Furthermore, it is necessary to reinforce the integrated informational ability of Organizations concerning to the Korean Medicine. Finally, with the above works accomplished, the overall standard of Korean Medicine Information should be settled. Initially, we compose an advisory committee of the Korean Medicine Information in the first year. The members of the committee include the informational coordinates of related government agencies, the experts in Korean Medicine Information, and specialists in the domains of computer science and information. In the next phase, we derive the promotional strategy for 'Center for Korean Medicine Information'. In other words, by means of analyzing the current issues and outstanding problems of on-going research projects and environments, the ultimate directions of the whole activities are established. Also, we build the medium and long-range road map of Korean Medicine Information Research by setting strategy for the policy projects related to the area. With the various research activities in this project, we can achieve the following practical strategic benefits. Firstly, we can lay a foundation for the Korean Medicine Information by establishing the fundamental plan for 'Korean Medicine Information Center'. Secondly, information strategic projects about 'Korean Medicine Information Center'. Secondly information strategic projects about 'Korean Medicine Information Development' can be performed in more systematic fashion and promoted by stages. Finally, by confirming the contents of the Korean Medicine of KMS system, we invent an opportunity of new project in the field of the Korean Medicine Information by means of practicing and managing the 'korean Medicine Information Custom Service'.

• 한국도로학회논문집
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• 제19권5호
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• pp.21-31
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• 2017

PURPOSES : One of the main components of road projects funded by the Economic Development Cooperation Fund (EDCF) is the improvement or rehabilitation of existing pavements. The result is that pavement structures are critical to the success of a project. There is, however, no design standard available at present that reflects a region's specific features including climate conditions and quality of pavement materials. For this reason, a comparative study of the major EDCF borrowers' flexible pavement design standards was conducted. This study led to the proposal of a new method for applying flexible pavement designs which can be used for EDCF-funded projects in Asia. METHODS : The method has been produced by adjusting some input data of the "AASHTO Interim Guide for Design of Pavement Structures" in accordance with certain Asian countries' geometrical features, tropical and subtropical weather, and strength of pavement materials. The Philippine regional factors, having five different grades, have been selected after taking into consideration the amount of rainfall, strength of pavement materials, and characteristics of the Asia and Pacific regions. Structural layer coefficients have been prepared for two different regions according to the geometric difference between Southeast and Southwest Asia. The Philippine and Sri Lankan coefficients have been used for Southeast Asia and Southwest Asia, respectively. CONCLUSIONS : Owing to applying this new method, it was verified that the thickness of the pavement was underestimated by between 11 cm and 16 cm compared with the originally designed thickness. Having discovered that the use of the Korean and American-oriented factors and coefficients is not appropriate for other Asian countries, the new method is expected to enhance the quality of pavement in future projects.

• KDI Journal of Economic Policy
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• 제35권4호
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• pp.31-61
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• 2013

민간투자 도로사업의 경우, 사업의 미래 수익성과 직접적으로 관련 있는 예측 교통량의 불확실성과 이에 따른 위험이 민간 운영자에게 이전된다. 따라서 교통량 예측위험이 민간투자 도로사업의 추진에 어느 정도 영향을 미치며, 이러한 위험의 실제적인 경제적 가치를 파악하는 것은 민간투자사업의 적격성을 파악하고 이를 높일 수 있는 중요한 정보이다. 본 논문의 목적은 민간투자 도로사업의 교통수요 예측위험의 경제적 가치를 산정하는 것이다. 이를 위해 예측 교통량은 불확실성이 존재하는 확률변수이며, 시간이 경과하면서 기하 브라운 운동을 따른다고 가정한 후 민간투자사업의 가치변동성을 예측하는 방안을 제안하였다. 특히 본 논문에서는 개통 후 도로사업의 교통량 형성 특성을 고려한 램프업 기간 전후의 상이한 교통량 증가율과 그 변동성을 적용하여 단순히 임의적으로 가정한 기존 연구와 차별화하였다 사례 사업분석 결과, 예측된 해당 민간투자사업의 교통수요 예측 리스크 프리미엄은 출자 건설회사의 시가총액을 고려하지 않고 단순평균하는 경우 7.39%, 시가총액을 가중하여 평가하는 경우 8.30%로 분석되었으며, 교통수요 예측위험에 따른 해당 민간투자사업의 가치변동성은 17.11%로 예측되었다. 할인율이 클수록 프로젝트의 가치변동성은 작아졌는데, 비용의 고정으로 인한 레버리지 효과는 교통량 변동성보다 프로젝트의 가치변동성을 크게 하였다. 교통수요 예측위험에 따른 민간투자사업의 가치변동률과 리스크 프리미엄을 통해 산출하는 사례 민간투자사업 교통량 예측위험의 시장가치는 0.42~0.50 사이로 분석되었는데, 이는 교통량 변동성이 1% 증가하거나 감소하면 이에 따른 해당 프로젝트 위험 프리미엄은 0.42~0.50% 증가하거나 감소함을 의미한다.

• Ecology and Resilient Infrastructure
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• 제4권3호
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• pp.156-168
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• 2017

도로 및 철도 건설과 같은 선형개발은 외래생물의 확산에 중요한 요인으로 고려된다. 본 연구는 도로사업 수행이 외래식물 유입에 미치는 영향을 파악하기 위하여, 한강유역환경청 관할 사업 (80개 사업) 중 현재 공사가 70% 이상 진행 중이거나 완공된 도로사업장을 대상으로 공정률에 따른 외래식물 변화를 연구하였다. 공정률은 공사 전 (P0)과 공사 중 (P25, P50, P75, P100)의 5단계로 구분하였다. 공사가 진행됨에 따라 귀화율, 도시화지수 및 외래식물 종수가 증가하였다. 특히 외래식물은 공사 초기에 급속히 유입되고 유입종은 공사가 완료될 때까지 지속적으로 출현하는 경향이었다. 그러므로 도로사업장의 외래식물 관리를 위하여 공사 초기에 성토 공정과 식생복원 공정을 집중관리하여 외래식물 유입을 최소화시킬 필요가 있다고 생각된다.

• 한국ITS학회 논문지
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• 제16권3호
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• pp.1-14
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• 2017

최근 자동차 산업은 자율주행자동차로 인해 빠르게 변화하고 있고 관련된 연구 또한 활발하게 진행되고 있다. 하지만 자율주행자동차의 기술에 관한 연구가 대부분이며, 도로교통 안전과 관련한 변화 예측과 개선방안에 대한 연구는 부족한 실정이다. 본 연구는 자율주행자동차의 도입에 따른 사업용 차량 도로교통 안전사업의 개선방안 제시와 우선순위 도출을 목적으로 수행하였다. 자율주행자동차 전문가를 대상으로 한 설문조사 결과와 AHP를 이용하여 분석한 결과 교통수단안전점검 법령 개정, 자율주행자동차 운전자 및 운영자 등에 대한 교육제도 개발 등이 가장 우선시 되어야 할 것으로 분석되었다.

• 한국측량학회지
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• 제29권6호
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• pp.553-559
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• 2011

자동차 보유대수 증가에 따른 고유가와 온실가스 배출로 자전거이용의 중요성이 대두되고 있지만, 자전거이용률은 현저하게 낮은 실정이다. 자전거이용 활성화를 위한 대책으로 전국자전거도로 사업이 진행되고 있으며 각 지방자치단체에서도 자전거도로 기본계획을 수립하여 진행되고 있다. 노선 선정에 대한 연구가 활발히 진행되고 있지만, 자료 처리에 대한 연구는 명확한 결과를 도출하기엔 부족한 실정이다. 자전거도로 설계 기준에 명시되어진 종단경사도 지형상황 등으로 인하여 부득이하다고 인정되는 경우에는 예외로 한다고 되어 있다. 본 연구에선 기존 자전거도로가 여수시의 지형상황을 고려하여 개설되어 졌는지, 종단경사 기준을 고려하여 연결 가능한 자전거도로 노선 선정을 제시했다. 추가요소로 차선 수, 도로 폭을 포함시켜 개설 가능한 자전거도로 중 적합한 자전거도로 노선이 산출되었다. 향후 산지가 많은 지역을 대상으로 자전거도로 선정 시 종단경사 기준의 활용 방안으로 이용될 것이다.

• 한국CDE학회논문집
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• 제19권1호
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• pp.80-90
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• 2014

In architecture projects, BIM library has widely been using for prefabrication of products and design process. However, since the shape of structures is different by each project in civil engineering projects and a shape representation system is complicated, it is not easy to develop a standardized BIM library. To solve these issues, this study develops BIM library based on standardized 2D shop drawings for civil structures. The standardized shop drawings, which are the targets of the BIM library model, should be first selected. Besides, in order to define modeling scope with the level of general and shop drawings for each structure, LOD(Level of Detail) and breakdown structure are determined, and development methods of families of 3D object type including 2D profile and rebar through commercial software are established. With these, properties of BIM library are configured, and a utilization model of the BIM libraries is constructed for 3D modeling and a simulation using the BIM library. Therefore, this study can identify properties that are necessary when IFC schema is configured for civil engineering projects. For future, it is expected that easiness of BIM design for the civil engineering projects and generation, management, and analysis system of BIM library for road projects will be secured.

• 한국태양에너지학회 논문집
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• 제40권5호
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• pp.47-58
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• 2020

Ministry of Land, Infrastructure and Transport(MOLIT) has increased reduction rate from 18.1% to 32.7% in Building sector compared to BAU of the national greenhouse gas emission according to the 2030 Greenhouse Gas Reduction Road map Amendment. For this purpose, MOLIT has been activating the green remodeling projects for existing buildings. Considering that 15 year old buildings after completion are 74% (5.25 million buildings) among about 7 million existing building stocks in Korea, reduction of building energy consumption by green remodeling is urgently needed, However, it is a major difficulty of activation for green remodeling projects because there are few case studies on Before and After building energy consumption of actual green remodeling projects. Considering that building energy performance and value increase after green remodeling through previous researches, additional studies of the energy consumption assessment on actual green remodeling projects are essential. Therefore, this study aims to propose results on Before and After building energy consumption of actual green remodeling projects.