• 한국철도학회:학술대회논문집
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• 한국철도학회 2002년도 추계학술대회 논문집(I)
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• pp.300-306
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• 2002

To construct ligh rail transit, many local autonomous entities investigate the feasibility of project. Especially, many studies attempt to find the probability of private inducement and the method. The purpose of this paper is to develop the light rail transit financial analysis system for private sector, based on the procedure and the method of the financial analysis. This system consistes of the income and cost module. As a result, provide the cash flow, income statement and financial profit statement for the result. We hope that it is contributed to analyze the feasibility of the finance conveniently.

• KIEAE Journal
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• 제15권6호
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• pp.5-10
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• 2015

Purpose: To evaluate the economic performance of grid-connected photovoltaic system in residential house, household electricity bill policy of Korea Electric Power Corporation (KEPCO) must be applied precisely, and market tendency and uncertainty of system also need to be considered. In this study, to evaluate the economic feasibility of PV system, we measured PV power generation and electricity consumption of six of Green home in Daejeon through web based remote monitoring system. Method: We applied Monte-Carlo simulation based on life cycle cost analysis, to reflect an uncertainty of main factor in economic feasibility evaluation of photovoltaic system. Result: First, with deterministic analysis, the difference of NPV of cumulative financial savings among households varied from -3,310 ~ 24,170 thousand won, portraying notably big range. Also the possibility of getting the same result was 50% when applying uncertainty. Second, the higher electricity consumption is, the more economic feasibility of photovoltaic system increases because KEPCO uses progressive taxation in household electricity bill policy. Third, The contribution to variance of electricity price increases in NPV varied from 98.5% to 99.9%. While the inflation rate and annual degradation contributed very little to none.

• 시스템엔지니어링학술지
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• 제1권1호
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• pp.1-13
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• 2005

The purpose of this paper analyze development feasibility and alternatives for infrared detector development in both technology and cost. Infrared Detector is core component of Thermal Imaging System and developed by ADD from 2006 10 2008 year. We got raw input data from development and technical expert, and then analyze cost and technology for development feasibility, and alternatives study. Technology level is analyzed by TRL(Technology Readiness Level) and AOA(Analysis of Alternatives) is done by development cost estimate. Estimating the development cost, we use SEER-H that is parametric cost estimating tool based on Knowledge Base. This study can help those who are related to the cost and development feasibility analysis of other weapon systems.

• 한국철도학회논문집
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• 제12권6호
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• pp.1067-1075
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• 2009

현재 국내에서 개발 중인 바이모달트램은 철도의 정시성과 버스의 접근성 등의 장점을 합친 신교통수단으로서 국내 도입에 따른 대중교통체계의 변화가 예상된다. 본 논문에서는 바이모달트램의 국내 도입전략에 대하여 도시 규모별 교통수요 및 노선의 특성을 고려한 도입전략에 대하여 분석하였다. 지자체별로 다양한 교통 및 대중교통체계가 존재하고 재정적 여건 등 도입여건이 다양함으로 바이모달트램을 일반적으로 적용할 수 있는 정책적 방안을 경제성 분석을 통하여 제시하였다. 본 논문의 결과는 지하철/경전철을 도입하려는 지자체의 재정적 부담을 덜고 경전철에 준하는 수송력과 친환경성을 갖춘 바이모달트램의 도입을 검토하는데 효과적일 것으로 판단된다.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 1997년도 봄 학술발표회 논문집
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• pp.508-514
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• 1997

RCS system consists of RC columns and Steel girders. Because RC columns are useful for compression and steel girders are for bending moment, RCS system has good structural performances. This system, however, has had no verification in the onstruction fields. This paper is a feasibility study on RCS system to verify the structural and economic efficiency of RCS system. On this study, we analyze 18 models selected by existing building data survey, and design these models as steel system,SRC system (Steel + RC system) and RCS system. To verify the economic efficiency of RCS system, we estimate the columns of these models. And we predict the construction procedure of RCS system to compare construction duration of RCS system with others So, in this study we find that RCS system is more economic than steel system and SRC system.

• 한국정밀공학회지
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• 제15권6호
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• pp.22-32
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• 1998

This paper describes a research work of developing a computer-aided design of irregularly shaped-sheet metal product with bending and piercing operation for progressive working. An approach to the CAD system is based on the knowledge-based rules. Knowledge for the CAD system is formulated from plasticity theories, experimental results and the empirical knowledge of field experts. The system has been written in AutoLISP on the AutoCAD with a personal computer and is composed of five main modules, which are input and shape treatment, flat pattern-layout, production feasibility check, blank-layout, and strip-layout module. Based on knowledge-based rules, the system is designed by considering several factors, such as radius and angle of bend, material and thickness of product, complexities of blank geometry and punch profile, and availability of press. This system is capable of unfolding a formed sheet metal part to give flat pattern and automatically account for the adjustment of bend allowances to match tooling requirements by checking dimensions and the best utilization ratio of blank-layout within bending production feasibility area which is beyond ${\pm}30^{\circ}$ degrees intersecting angle between grain flow and bending edge line and which is suitable to progressive bending operation. Also the strip-layout drawing generated by a bending and a piercing operation according to punch profiles divided into automatically for external area of irregularly shaped-sheet metal product is displayed in graphic forms.

• 신재생에너지
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• 제8권4호
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• pp.21-29
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• 2012

The extensible supply of New & Renewable energy resources desperately needs to counter the high dependence on imported energy, recent high oil prices and the Climate Change Conference, and the government has operated the 'Renewable Portfolio Standard' (RPS) as one of the renewable energy policy from 2012. By analyzing the operation case of combined heat and power plant using the woodchip biomass, we drew the price of wood chip fuel, plant capacity factor, electricity selling price, heat selling price and LCOE value. After analyzing the economic feasibility of 3MWe combined heat and power plant based on the operating performance, the minimum of economic feasibility has appeared to be secured according to the internal rate of return (IRR) is 6.34% and the net present value (NPV) is 3.6 billion won as of 20 years life time after installation, and after analyzing the cases of the economic feasibility of the price of wood chip, plant capacity factor, electricity and heat selling price are changed, the economic feasibility is valuable when the price of wood chip is over 64,000 won/ton, NPV is minus, and the capacity factor is above 46.9%, the electricity selling price is 116 won/kWh and the heat selling price is above 75,600 won/Gcal. When going over the new installation hereafter, we need the detailed review of the woodchip storage and woodchip feeding system rather than the steam-turbine and boiler which have been inspected many times, the reason why is it's hard to secure the suitable quality (constant size) of woodchip by the lack of understanding about it as a fuel because of the domestic poor condition and the calorific value of woodchip is seriously volatile compared with other fuels.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2003년도 학술대회지
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• pp.222-225
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• 2003

임대아파트 개발사업은 일반분양아파트 개발사업과 비교하여 사업기간이 길고 투입자본을 회수하는데도 비교적 오랜 기간이 소요되는 사업으로, 체계적이고 객관적인 사업성분석시스템의 개발이 요구되나, 사업성분석의 절차와 분석항목, 산정기준이 표준화 되어 있지 않고, 각 분석항목간의 연관관계와 정보의 흐름이 명확하게 나타나지 않는 등 많은 문제점을 안고 있는 실정이다. 따라서 본 연구에서는 국내 공기업의 임대주택개발사업 사업성분석의 현황을 일반현황, 사업성분석 항목의 중요도 및 정확도, 사업성분석 보고서 현황의 3가지 측면에서 조사${\cdot}$분석하여 문제점을 도출함으로써, 향후 임대주택개발사업 사업성분석시스템 개발을 위한 기초적인 자료를 .제시하였다.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2000년도 하계종합학술대회 논문집(1)
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• pp.267-270
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• 2000

The feasibility of small linear antenna for near range wireless communications was studied. The requirement of the system are frequency range 9∼12 MHz and antenna size 15 cm. The communication range is about 15 m. The antenna input impedance is very small radiation resistance and very large capacitive reactance. The lossless impedance matching is nearly impossible, therefore lossy matching is considered. The antenna has very low radiation efficiency. The near field calculation has a large uncertainty, but the results can be used as the guideline of a small linear antenna system for a near range wireless communication.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2007년도 제38회 하계학술대회
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• pp.782-783
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• 2007

Exhaustion of fossil fuel resources and high oil price, and furthermore environmental crisis due to emission of carbon dioxide from fossil fuel are serious problems in these days. In order to overcome these problems it is necessary to find and utilize the every energy saving measures and to make maximum utilization of renewable energy resources. The objective of this paper is to develop an instrument to verify the feasibility of Co-Generation System application in an Apartment Complex.