• Journal of the Korean Geosynthetics Society
• /
• v.1 no.1
• /
• pp.53-61
• /
• 2002

Even though a lot of laboratory and field tests for asphalt pavements using geosynthetics have been conducted recently, any rational and systematic analysis for the economic efficiency of the asphalt pavement systems reinforced by using geosynthetics has not been proposed yet. In this study, the economic analysis considering the traffic characteristics for the glass fiber sheet reinforced asphalt pavement was performed using the Life Cycle Cost Analysis(LCCA) which is commonly used for the economic analysis technique. The economic efficiency for the glass fiber sheet reinforcement and the traffic characteristics was examined by applying the test results from the literature review to the economic analysis model.

• Journal of Convergence for Information Technology
• /
• v.11 no.6
• /
• pp.113-119
• /
• 2021

Since the weapon system project has a large ripple effect on the country by investing a huge budget, analysis of acquisition methods that secured economic feasibility is required in the planning stage to promote the weapon acquisition project. In response to this demand, economic analysis for acquisition method is preformed in the research stage of previous studies, but the analysis on economic analysis for acquisition alternative is imperfect at the present. In this research, we identify the limitations of the effect analysis and propose an additional cost-benefit analysis method to analyze the economic feasibility of the acquisition alternative. It is possible to present the universal results of economic feasibility analysis for not only multiple alternatives but also single alternatives by presenting benefit/cost ratio. It is applied to research on acquisition project of OO guided rocket, and the result of economic analysis for each alternative is presented.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.19 no.10
• /
• pp.394-400
• /
• 2018

Recently, it is expected to significantly increase the defense budget by acquiring large-scale weapons systems to enhance defensive capabilities. In order to secure funds needed to acquire such weapons systems, it is necessary to improve the efficiency of the defense budget. In addition, interest in economic factors affecting the domestic economy such as export opportunities and employment creation are increasing, as well as budget reduction of the defense acquisition business. In order to respond to these demands, this study conducted cost- benefit analysis and examined economic ripple effects in the implementation of defense procurement projects. However, research on economic analysis methodology considering characteristics of defense acquisition projects is still in its early stage. This study proposes a methodology to analyze the economic feasibility of defense acquisition projects and conducted a case study on the economic feasibility of the ${\bigcirc}{\bigcirc}$ guided missile project which is being prepared against local provocation. The proposed economic analysis method provides the cost-effectiveness analysis that has been performed in many weapon system acquisition projects in connection with the more general cost-benefit analysis method. This study contributes to the establishment of an improved theoretical methodology for weapon system acquisition projects.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
• /
• v.29 no.1
• /
• pp.325-332
• /
• 2005

As ship builder companies have a tendency to pursuit the effect of scale economy, recently the ultra-large sized container ship is discussed very actively among them. It is expected that these situation will be continued for the time being. The need of accommodation re-arrangement is carefully proposed according to the tendency of ultra-large sized ship. In this paper, accommodation re-arrangement of ultra-large container ship is examined in the view of economy. We proposed separation of engine room and accommodation part through review and supplementaition of drawing generation in intial design stage. Also we investigated its merits and demerits to find out whether it can be realized or not in the view of economical efficiency. The RFR(Required Freight Rate) is considered as the objective function to evaluate the re-designed vessel. The economical benefits for increasing the number of TEU(Twenty-foot Equivalent Units)'s and the re-arranged space are analyzed in the view of ship owner and shipyards respectively.

• Journal of the Korea Organic Resources Recycling Association
• /
• v.24 no.2
• /
• pp.3-13
• /
• 2016

This study investigated the environmental and economical assessment for sewage sludge treatment options including biogasification, incineration, carbonization, drying, and solidification. Additionally it is also investigated the economical feasibility of the current guidelines (Digestion efficiency for organic waste = 45 %, Moisture content of sludge = 95 and 93 %) and it aimed to suggest the scientific informations for a policy-making. For the economical feasibility the 30 plants with anaerobic digestion treatment and the 17 plants without anaerobic digestion treatment were investigated. The result of the comparison of sewage sludge treatment options showed that anaerobic digestion+incineration was the most economically feasible considering incineration and drying. For smaller treatment capacity, solidification was the most economically feasible considering carbonization and solidification and anaerobic digestion+carbonization was the most economically feasible considering carbonization and solidification.

• Journal of Korean Society of Transportation
• /
• v.20 no.7
• /
• pp.5-13
• /
• 2002

고도의 산업화성장에 따라 도시의 기능이 지역간의 완전분리가 아닌 경제적 사회적 상호 연관성이 점점 증가하고 그 내용도 복잡하고 다양해짐에 따라 이에 대한 체계적인 분석이 필요하게 되었으며, 그에 대한 연구 또한 활발히 진행되고 있다. 그러나 기존에 연구에서 제시하고 있는 각 지역단위별로 취업자수에 대한 고용자수 비율 또는 출근통행의 유출량에 대한 유입량 비율 등의 단순지표를 이용한 지역간의 경제적 의존성을 설명하는 데는 한계가 있다고 할 수 있다. 따라서 본 연구는 지역간의 경제적 연관관계 즉 경제적 의존성을 복합적이고 표준화 할 수 있는 계량치로 추정하기 위해 두 변수 집합간의 연관성을 추정하는데 매우 유용한 분석기법인 정준상관분석 기법을 이용하여 추정하고자 하였다. 이에 수도권 72개존의 출근통행자료을 이용하여 지역간의 경제적 의존성을 측정하였으며, 각 존들로 구성된 지역간의 정준상관계수 및 각 존들의 정준가 중계수를 통해 통계적으로 정산되어진 표준화된 계수를 산출하였다. 그 결과 대존의 경우 경기도와 인천시는 각각 0.9753. 0.2968 정도의 서울에 대한 경제적 의존정도를 보이는 것으로 나타나 서울에 대한 경기도의 경제적 의존성이 높은 것으로 나타났으며, 산출된 정준가중계수를 살펴보면 분당구와 서울시의 중구는 서울에 대한 경기도의 경제적 의존성에 가장 높은 영향을 미친 것으로 나타났으며, 또한 중존에 해당되는 인천의 3개 권역, 경기의 16개 권역의 서울 5개 권역에 대한 경제적 의존성도 분석되었다.

• Journal of Korean Society of Transportation
• /
• v.26 no.1
• /
• pp.103-112
• /
• 2008

In the feasibility analysis, Braess' Paradox results in the negative social benefit in spite of adding transportation facilities. Consequently, it has been difficult to judge on the investment of SOC projects. This research aims to analyze the Braess' Paradox in the feasibility analysis and to seek a remedy for the Paradox. Several experiments were conducted on the simple network under the various conditions. From the experiments, following findings were validated: Braess' Paradox occurred only if travel demands met within certain intermediate range. In terms of traffic assignment method, the SO was more likely to reduce the effect of the Braess' Paradox than the UE. However, the Braess' Paradox in the benefit of operating cost saving occurred in all cases and the paradox in the total benefit continued. In order to solve the problem, new link cost function considered travel time and operating cost simultaneously were suggested. As a result, the negative benefit was significantly decreased in the UE case and total negative benefit was no longer shown in the SO case through the analysis.

• Proceedings of the KIPE Conference
• /
• 2019.11a
• /
• pp.236-238
• /
• 2019

국내 마이크로그리드는 실증단지, 도서지역, 캠퍼스, 산업단지등에 구축되고 있다. 특히 산업단지는 수용가의 전기에너지 이용 효율화와 신재생에너지 전원을 활용한 전력거래를 위해 마이크로그리드를 구축하는 추세이다. 본 논문에서는 ESS(Energy Storage System) 복합운영을 통한 비용절감과 전력거래 수익창출 실증을 위하여 나주혁신도시 동수산업단지 내계통과 연계된 제조업체(태산, 범한, 하이옥스)에 구축되는 마이크로그리드 경제성을 분석한다. 경제성 분석 툴인 HOMER를 이용하여 각 업체별 PV(PhotoVoltaic) 및 ESS용량에 따른 순 현재비용과 1[kWh]당 발전단가를 산출한다. 경제성 분석을 위해 각 제조업체의 최근 1년간 부하량과 산업용 전기요금기준, 기업체 소재지의 기후조건에 따른 태양광발전량, 각 기업체 마이크로그리드 실제구축비용을 입력하고, 공인할인율 5.5[%]와 유류비 1500[원/ℓ]를 기준으로 경제성을 분석한다. 분석을 바탕으로 개별 제조업체 부하 특성에 부합한 마이크로그리드 분산전원 및 설비 용량 선정과 운영방안을 제안한다.

• Journal of Energy Engineering
• /
• v.7 no.1
• /
• pp.1-6
• /
• 1998

We consider the economic analysis of the domestic natural gas DSM (Demand Side Management). Since the demand of the domestic natural gas decreases in the summer and dramatically increases in the winter, the necessity of the DSM that will smooth the demand pattern of the natural gas is emerged. The economic analysis of the DSM program is used as a main tool for screening the DSM. This paper suggests an economic evaluation method for the domestic gas DSM from the perspectives of participants, Korea Gas Corporation, local distribution company, non-participants, and total resource. The high-efficiency gas boiler is selected as a case study to illustrate the economic analysis of the natural gas DSM.

• Proceedings of the Korea Water Resources Association Conference
• /
• 2021.06a
• /
• pp.177-177
• /
• 2021

우리나라는 최근 이상기후로 유발되는 여름철 태풍과 집중호우로 인해 매년 심각한 홍수피해가 발생되고 있다. 또한, 도시화에 따른 자산 및 인구의 집중화로 인해 홍수피해 규모도 지속적으로 증가하고 있다. 이와 같은 재난 발생 시 위험도를 저감하기 위해서는 재난에 대한 예방이 선행되어야 한다. 한정된 예산에서 효율적인 재난관리의 일환으로 경제성 분석이 있는데, 이는 경제성이 높은 사업을 우선적으로 순위에 두고 시행하는 것이다. 다차원 홍수피해 산정법(이하 다차원법)은 2004년에 개발된 경제성 평가모형으로서, 예상피해액 산정 결과가 개선법에 비해 정확하다고 평가되고 있다. 하지만 다차원법에 적용되는 토지피복도는 동일한 구역에 있는 군집으로 나누어진 자료로 건물피해액 산정 시 도로면적까지 포함되는 경우가 있어 실제 피해액이 과대평가되는 문제가 있다. 이에 본 연구에서는 도로명주소 전자지도를 활용해 다차원법을 보완하고자 하였다. 여기서 도로명주소 전자지도는 폴리곤 객체 단위로 건물이 구현되는 공간분석 자료로 건물피해액 산정 방법을 개선할 수 있다. 본 연구에서는 경안천 유역의 홍수위험지도를 사용하여 도로명주소 전자지도와 토지피복도를 각각 적용했을 때 나타나는 경제성 분석 결과를 비교분석 하였다. 분석 결과, 기존의 토지피복도를 사용한 피해액 산정결과보다 개선된 공간분석 자료를 적용했을 때 더 정확한 예측피해액 산정결과를 얻을 수 있었다. 본 연구에서는 다차원법의 일반자산 피해항목 중 건물피해 산정방법만을 개선시켰는데, 향후 연구에서 농업지역, 산업지역, 공공시설물 피해 등의 산정방법의 보완이 필요할 것으로 사료된다.