• 설비공학논문집
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• 제27권1호
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• pp.44-49
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• 2015

Ceiling cooling and heating system that consider load arrangement and space in the ceiling needs to be developed. Therefore, experimental and economic changes were done to verify the performance of compact type VAV. The test results were as follow. 1) Noise test result, measuring approximately 50.4 dB~56.6 dB (before ceiling in landfill), had a better ceiling deadline than the current measure, about a 10 dB noise reduction, so that the office baseline (40~50 dB) noise was judged to be less than test. 2) For the static pressure test result, taking out an outside hydrostatic 25 mmAq, 24.8 mmAq was measured, respectively, at the point. 3) For the life-cycle cost analysis result, the initial investment cost, maintenance replacement costs, and maintenance costs increased 0.2%, but the energy savings ratio was 19.5% while the whole life cycle savings of 40 years LCC was reduced 11.9%.

• 설비공학논문집
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• 제21권9호
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• pp.513-518
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• 2009

The building HVAC systems generally have very different qualities of performance and durability with the superintendent's interest in or capability of management and maintenance of them. The poor management of these systems finally lead to the shortening of the life expectancy and result in the increase of operating cost and energy consumption due to their low efficiencies. So it is necessary to develop tools to maintain adequately and to operate efficiently various building service equipments in order to cope with actively the global environment problems and energy crises. In this study the LCC based calculation program and package were developed, which could be used for analyses of the economic performance and determination of the reasonable maintenance time and methods of building HVAC systems.

• World Technopolis Review
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• 제1권3호
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• pp.186-191
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• 2012

To understand South Korea's economic success several contending paradigms have emerged, ranging from a neo-classical explanation to a statist perspective, and Schumpeterian structuralism. The Korean miracle can be seen as a product of multiple factors involving the strategic choice of export-led growth, timely and active human-capital investment, business activism, and individual innovative ideas. However, South Korea needs more complex and innovative ideas to continue its both economic growth and S&T Development. The ideas of Schumpeterian structuralist needs to be more emphasized. Changing state-society relations and subsequent policy choice are greatly influenced by the industrial life cycle. The industrial life cycle is closely related to the historical sequencing and diffusion of technology. The complex mixture of statist-market-Schumpeterian structuralist perspectives could lead more technologically advanced society in South Korea.

• 자원리싸이클링
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• 제23권3호
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• pp.3-12
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• 2014

본 연구에서는 대표적인 폐기물 최종 처리시설인 소각장을 대상으로 소각열 회수에 따른 경제성 분석을 수행하였다. 국내에서 운영 중인 소각장의 건설 및 운영비용, 소각열 회수량에 대한 함수식을 회귀분석을 통해 도출하였으며, 이를 바탕으로 생애주기비용을 비교함으로써 소각열 회수에 대한 경제성을 비교 분석하였다. 도출된 회귀식으로 일일 80톤 처리규모의 소각장을 기준으로 경제성 분석을 진행한 결과, 소각열 회수시 추가 설비 및 인건비로 인한 초기투자 비용 및 운영비용이 크지만, 열회수에 따른 LNG 대체효과로 계산시 11년 이상 운영할 경우 미회수 소각장과 비교하여 경제적 우위성이 있었다. 또한 열 판매와 온실가스 감축효과를 편익으로 계산할 경우 19년의 자본회수기간이 소요됨을 확인하였다.

• 한국농촌건축학회논문집
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• 제19권4호
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• pp.1-8
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• 2017

The purpose of this study is to deduce dwelling selection criterion and to consider change of values and consciousness of dwelling on people who return to farming & going to village. For that, questionnaire of evaluation of housing choice is conducted by people who return to farming & going to village in Jellanam-do by the AHP. The results are as follows. First, four factors as the primary hierarchy structure and 12 factors as the secondary hierarchy structure of dwelling selection criterion are deduced. The primary hierarchy are "education environment", "economic & Convenience in life", "residence safety and image", and "economic value". Second, weight value deduced from the primary hierarchy structure is showed that "economic & convenience in life(0.345)" is the highest and next is "education environment(0.262)". "Residence safety and image(0.237)", and e "economic value(0.157)" is relatively low(C.I. 0.213). Third, for the secondary hierarchy structure, the case of life convenience is showed that economic condition(0.403) is the highest, the case of educational condition is showed that education facilities(0.479), the case of residence safety and image is showed that residence area(0.490) is the highest, and the case of economic importance is showed that financial technology(0.470) is the highest.

• 한국농공학회논문집
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• 제65권4호
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• pp.11-23
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• 2023

In Korea, open burning of agricultural residues is prevalent due to inadequate collection systems, which have caused environmental impacts such as GHGs and particulates. This illegal treatment of agricultural residues also results in economic loss, considering that agricultural residues can be utilized as resources such as pellets and energy sources. To understand the effect of avoiding open burning, this study evaluated the economic, environmental, and social effects of two alternative management options for agricultural residues: incineration and pelletizing. The study estimates the potential amount and dry weight by region for 18 items, taking various factors into account. Regarding the economic aspect, pelletizing facilities in all regions in Korea create economic benefits. This study shows that most regions have an environmental advantage by pelletizing residues. However, incineration creates more environmental benefits than pelletizing in metropolitan cities with relatively low density of residues. It is expected that the environmental, economic, and social findings of this study can be used to inform policies for bioenergy as the need for agricultural residue increases.

• 융합정보논문지
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• 제10권1호
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• pp.109-119
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• 2020

본 연구는 농촌노인의 어떠한 특성들이 주관적 건강상태, 삶의 만족도에 직접적으로 영향을 미치는지, 그리고 주관적 건강상태를 매개로 삶의 만족도에 영향을 미치는지 고찰하는 것을 목적으로 한다. 연구목적을 달성하기 위하여 G군에서 2015년 조사한 60세 이상 169명을 대상으로 다중회귀분석을 실시하였다. 연구결과는 첫째, 질병수는 부(-)적으로, 주관적 경제상태와 운동시간은 정(+)적으로 주관적 건강상태에 영향을 미쳤다. 둘째, 주관적 경제상태, 운동시간, 규칙적인 식사, 하루 끼니 수가 삶의 만족도에 정(+)적 영향을 미친 것으로 나타났다. 셋째, 주관적 경제상태, 운동시간이 주관적 건강상태를 부분매개로, 질병 수는 완전매개로 삶의 만족도에 영향을 미치는 것으로 나타났다. 이러한 결과를 토대로 보건 및 식사지원을 기초로 융합된 정책지원을 제언하였다.

• Journal of Animal Science and Technology
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• 제61권6호
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• pp.388-388
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• 2019

• 정보관리연구
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• 제35권1호
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• pp.93-112
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• 2004

본 연구는 기술수명을 직관적이 아닌 정량적이고 객관적인 방법으로 추정하기 위한 것으로 미국특허에서 인용된 특허의 수명을 분석하고자 하였다. 인용 특허의 수명을 추정하기 위해 기술예측 방법론 중의 하나인 탐색적 기법을 근간으로 하였으며, KISTI의 미국특허 데이터베이스(USPA)를 대상으로 계량정보학적 방법을 이용하여 인용특허의 수명을 추정하고 이를 통계적으로 나타냄으로써, 해당 기술군에서 인용된 특허들의 수명 분포를 알 수 있었다. 이러한 결과는 기술의 속성 분석을 고려함에 따라 기술수명주기 분석 및 기술가치평가시 기술의 경제적 수명추정에 활용이 가능할 것이다.

• 한국환경과학회지
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• 제22권3호
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• pp.281-289
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• 2013

For the purpose of evaluating the eco-efficiency(EE) on surplus heat generated from industrial process, techniques of life cycle assessment are adopted in this study. Because it can be indicated both environmental impacts and economic benefits, EE is well known as a useful tool for symbiosis network on the sustainable development of new projects and businesses. To evaluate environmental impacts, the categories were divided into two areas of resource depletion and global warming potential. It can be seen that environmental impact increased a little but much higher economic benefit on the company, environmental performance and economic value were improved on the apartment by the district heating, respectively. In result, eco-industrial park(EIP) project on surplus heat should be found sustainable new business because the EE was in the area of fully positively eco-efficiency and, moreover resource depletion was taken place than the reduction of greenhouse gas.