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

• KSCE Journal of Civil and Environmental Engineering Research
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• v.30 no.5D
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• pp.461-465
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• 2010

The objective of this study is to calculate road user costs that caused by the expansion work of metropolitan arterial highway and to analyze the costs that affect economic feasibility evaluation. "Taerung~Guri IC" section of Bukbu Expressway was selected as a case study. As a result, it shows that these costs could be a factor for determining economic feasibility for some projects. However, decreased capacity and free-flow speed are seriously different as period, type, length and traffic volume of work zones. These factors that decrease traffic capacity and free-flow speed should be deeply researched in the future.

• Journal of the KSME
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• v.22 no.3
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• pp.223-232
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• 1982

우리나라에 있어서 열병합 발전 지역난방이 1960 년대에 거론되어, 당인리 화력발전소의 폐열을 여의도 지역난방으로 이용하자는 이야기가 있었다. 그러나 이러한 "이야기"가 경제성이 있는 것 으로 판단된 것은 적극적인 연구사업인 1978 년도 과학기술원의 반월공단에 대한 타당성 검토와 여의도 강남지역의 타당성 검토를 통하여 비롯되었다. 이러한 일련의 연구검토를 토대로 우리 나라 환경에 맞는 기술의 국내 도입을 위하여 이 분야에 오랜 전통을 갖는 해외 전문용역회사 BRUNN '||'&'||' SORENSEN A/S와 한국 동력자원연구소 에너지분소가 공동으로 국내 열병합발 전지역 난방 타당성 조사사업을 1980. 9-1981.7까지 수행하였다. 본 타당성 조사의 기술 및 경 제성 분석 과정과 결과를 서술하고 향후 추진방향을 제시코자 한다.다.

• Railway Journal
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• v.13 no.2
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• pp.8-11
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• 2010

• LP가스
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• s.95
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• pp.47-54
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• 2005

• Journal of Korea Port Economic Association
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• v.30 no.3
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• pp.121-140
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• 2014

The purpose of this study is to identify economic benefits for analyzing the future port and propose an appropriate estimation model. This research has conducted the empirical analysis in order to examine the developed research model. First of all, several existing economic benefits are reviewed and the list of benefits, are able to quantify and characterizable, is selected for the next step. We test the application possibility of the proposed model applying for the three suggestions(AS/RS, OSS, Sky Rail) which are based on "Development of Smart Green Container Terminal Technology." The results of this paper are as follows: Firstly, all of the alternatives are proved economic validation because the values of B/C analysis are over 1.0. Secondly, sensitive analysis is attempted to test unforeseeable circumstances based on the cost increases. The result of the test is identified economic validation as well. Lastly, we convince that the proposed research model in this study is particularly applicable to future container terminal so-called "eco-friendly and fully automated container terminal with high productivity."

• Journal of Korean Library and Information Science Society
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• v.45 no.4
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• pp.409-428
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• 2014

The purpose of this study is to analyze the economic feasibility of Busan Regional Central Library. The four candidate sites were included for the analysis. To achieve the purpose of this study, we applied three types of indices such as Benefit-Cost analysis, Net Present Value, and Internal Rate of Return. We used CVM(Contingent Valuation Method) to calculate the benefit; we conducted two investigations to calculate WTP, which are for pretest and for main survey. From results of pretest, we designed five optimal prices. On the basis of them, main survey was accomplished to figure out WTPs for four candidate sites. The results show that four candidate sites were all feasible from an economic point of view. Of these, the Busan Citizen Park site got the highest point of B/C ratio.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2006.11a
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• pp.680-685
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• 2006

Bridges are an integral part of Transportation that is always open to traffic.To effectively manage bridges today, more needs to be done to assess the day-to-day condition and behavior of bridges, and the deterioration rates of their components, so that efficient and proactive measures can be taken. Conventional methods consumemore time and they lack flexibility to reach all locations in high convoluted structures which most bridges offer. Instead, this work uses a new concept of robot, termed as Bridge inspecting robot, which, as its name suggests, possesses superior ability to flex, reach, and approach all points on the bridge. This study also provides economical feasibility model for the same and a comparison with existing bridge inspection and automated inspection work. Finally, we have uncovered few issues and did not analyze some information because of limitation to data.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
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• v.7 no.3
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• pp.55-63
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• 2012

This study evaluated the economic feasibility for the Oriental Medicine Hospital is established in W-city. To analyze the demand and supply of Oriental Medicine Hospital status and population trends were analyzed inthe hospital service area. As a result, the Service Area of the demand for Oriental Medicine were met by the S-Oriental Hospital. Thus, On the demand side to assess the adequacy of Oriental Hospital established does not make sense. So, Oriental Hospital of 50 beds and 70 beds, separated by the economic feasibility was evaluated. As a result, the Oriental Hospital opened was found to be not economically feasible.

• The Journal of the Korea Contents Association
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• v.8 no.4
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• pp.247-254
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• 2008

This research was conducted to investigate the feasibility of aviation safety technology development. The important subjects of aviation safety technology development, aviation accident prevention and damage reduction technique, aircraft safety certification development, BASA promotion in an aircraft class, were included to investigate the the feasibility of aviation safety technology development. The survey technique using Benefit-Cost Anlysis was performed and the results showed that aviation safety technology development brought scientific technique effect, industrial and economic effect, and the rest effects. Also, the benefits from aviation safety technology development were much greater than the costs.