제품의 온실가스 배출저감에 대한 성과지표 개발

정인태(In Tae Jeong),이건모(Kun Mo Lee),송종성(Jong Sung Song) 大韓環境工學會 2008 대한환경공학회지 Vol.30 No.12

지구온난화 영향의 사회적 비용(외부비용) 추산 방법을 제안하는 것이 이 연구의 목적이다. 지구온난화 영향의 피해를 받는 대상을 정의하기 위하여 엔드포인트 접근방법(endpoint approach)을, 피해를 받는 대상에 대한 경제적 가치를 산출하기 위하여 컨조인트 분석(conjoint analysis)을 각각 적용하였다. 보호대상에 대한 사회적 선호도와 지불의사금액(Willingness to Pay; WTP)을 측정하여 보호대상에 대한 경제적 가치를 추정한 결과 인간 건강은 62,261,700원/DALY(년)(장애보정생존연수), 사회 자산은 10,000원/10,000원이었다. 또한 각 보호대상에 대한 단위 피해를 정량화 한 피해계수(damage factor)와 인간 건강과 사회 자산에 대한 경제적 가치를 곱하여 GHG의 비용계수(cost factor)를 산출하였다. 온실가스 중 CO₂의 경우 비용계수는 13.52원/kg(13,520원/ton)으로 산출되었다. 제품 및 서비스로 인해 배출된 GHG 목록 결과값과 각 온실가스의 비용계수를 곱하여 지구온난화의 외부비용을 산출하였다. Proposing a method for the estimation of the social cost for global warming impact (external cost) is the aim of this paper. Both the endpoint approach and conjoint analysis were applied to estimating the social cost for global warming. The endpoint approach was used to assess the damage on the safeguard subjects by global warming due to the emission of greenhouse gases into the atmosphere. The conjoint analysis was used to estimate the economic values for safeguard subjects which measure the social preferences and willingness to pay (WTP) on safeguard subjects. The economic values of human health and social asset were estimated at 62,261,700 Won/DALY (yr) and 10,000 Won/10,000 Won, respectively. Moreover, cost factors of GHGs were calculated by multiplying the damage factor which is quantified the unit damage on safeguard subject and the economic value. In the case of CO₂, the cost factor was calculated at 13.52 Won/kg (13,520 Won/ton). External cost of products or services can be calculated by multiplying the GHG inventory result of products or services by the cost factor of each GHG. inventory.

철도산업과 전과정평가(LCA)

정인태(Jeong In-Tae),양윤희(Yang Yun-Hee),이건모(Lee Kun-Mo),김용기(Kim Yong-Gi) 한국철도학회 2005 한국철도학회 학술발표대회논문집 Vol.- No.-

Life cycle assessment(LCA) has been developed from the concept of life cycle thinking. Life cycle thinking implies that everyone in the whole chain of a product"s life cycle, from cradle to grave, has a responsibility and a role to play, taking into account all the relevant external effects. LCA is an analytical tool for identifying environmental loads and assessing the environmental impact in the whole chain of a product"s life cycle. In Europe and Japan, LCA and ecodesign study for railway industry have been actively carried out recently. However, LCA for railway industry in domestic is still infant. LCA is standardized in International Organization of Standardization(ISO), base on the ISO 14040 standards, 307 life cycle inventory(LCI) database for infrastructure and base materials have been established in total since 1999. Some of LCI database can use in performing LCA for trains and railway infrastructure, but still not enough to derive accurate LCA result. Therefore, railway oriented LCA methodology and LCI DB are needed to be developed.

친환경자동차 부품 개발을 위한 Ecodesign 방법 개발

정인태(In Tae Jeong),송준일(Jun Il Song),이건모(Kun Mo Lee),홍존희(John Hee Hong) 大韓環境工學會 2006 대한환경공학회지 Vol.28 No.4

두 개강내 혈종음영의 변화에 관한 전산화 단층촬영 소견

태석,정무찬,정인태,정미경,권귀향,김기정,Tae, Seok,Chung, Moo-Chan,Jeong, In-Tae,Chung, Mi-Kyung,Kwon, Kwi-Hyang,Kim, Ki-Jeong 대한영상의학회 1982 대한영상의학회지 Vol.18 No.3

The study was undertakedn to asses the changes in the size and densities of intracranial hematomas by analyzing the sequential C.T. examination of 23 patients at Soon Chun Hyang College Hospital from Jul. '80 to Aug. '81. The results were as follows: 1. The high densities of hematoma were reduced slowly in size and density. 2. The factors influence the rate of changes were the cause of hematoma, hematoma location, age and sex of patient, and initial hematoma size. 3. The C.T. findings that indicate complete absorption of hematomas were normalization of mass effect, not disappearence of hematoma densities. 4. In intracerebral hematoma, the high density of hematoma reduced it's density and mass effect about 4-6 weeks duration. 5. In subdural hematoma, about 7 weeks after head trauma, the C.T. findings were normalized.

학술 논문 : 벡터 개념을 활용한 생태효과성 제안 및 적용

박필주 ( Pil Ju Park ),정인태 ( In Tae Jeong ),김만영 ( Mann Young Kim ) 한국전과정평가학회 2011 한국전과정평가학회지 Vol.12 No.1

1987년에 발표한 ``우리의 미래(Our Common Future)``라는 보고서를 통해 경제발전과 환경보전이라는 두 측면을 동시에 달성하고자 하는 ``지속가능한 발전`` 개념이 공식화 된 이후, 지속가능한 발전을 위한 노력은 국제협약, 정부규제 및 시장요구 등 다양한 형태로 가시화되어 왔다. 이러한 다양한 노력들은 피터 드러커(Peter F. Drucker)의 "측정할 수 없으면 관리할 수 없다"는 말처럼 관리를 위한 다양한 측정수단들을 개발하여 적용해 오고 있다. 특히, 이러한 이슈에 민감한 기업에서는 지속가능성 개선 정도를 정량적으로 측정할 수 있는 다양한 평가지표를 개발하여 기업 활동이나 제품/서비스의 지속가능성 개선을 위한 수단(녹색구매, 에코디자인 등)에 적용해 왔으며 이때 생태효율성(eco-efficiency) 개념이 유용한 모델로 사용되고 있다. Ecology와 Economic에서의 ``Eco-``와 효율을 나타내는 ``efficiency``의 합성어인 생태효율성은 "지구의 자정능력의 범위 안에서 생태계에 대한 영향 및 자원 사용량을 줄임과 동시에 인간의 욕구(needs)와 삶의 질을 향상시키는 물품(goods) 및 서비스를 제공함으로써 달성할 수 있는 상태"로 정의할 수 있다[1]. 즉, 보다 효율적인 자원이용과 환경오염물질의 배출저감이라는 환경적 요소와 경제성장이라는 경제적 요소가 결합된 개념으로, 자연자원의 효율적 사용을 통해 환경에 미치는 영향을 최소화하면서 경제개발도 동시에 추구할 수 있다는 주장이다. 생태효율성은 제품(이 연구에서 ``제품 (Products)``은 ``물품과 서비스(goods and service)``를 포괄하는 뜻으로 사용하였다) 가치를 환경영향으로 나눈 값으로 정의되며, 생태효율성 향상을 위해서는 제품 가치 상승, 환경영향 저감 또는 이 두 가지를 동시에 달성해야 한다. 즉, 생태효율성은 제품 가치와 환경영향의 비율로서 계산 결과 값 자체는 의미가 없으며, 다른 생태효율성 값과의 비교를 통해서만이 그 의미를 갖는다. 지속가능한 지표로서 생태효율성 개념은 2000년대 초반부터 일본 기업들을 중심으로 기준제품 대비 개선제품의 환경성 및 가치(품질 등) 개선 정도를 보여 줄 수 있는 가장 효과적인 평가지표로서 널리 사용되어 오고 있다[2]. 앞서 언급했듯이 생태효율성은 제품의 가치와 이에 따른 환경영향의 비로 계산된다. Fig. 1에서처럼 환경영향을 X축에, 가치를 Y축에 나타낸다면 각 지점의 생태효율성은 X축으로부터의 각도인 θ가 높은 값을 가질수록 생태효율성은 더 높다고 할 수 있다. Eco-efficiency refers to a ratio between environmental impact and value(or cost) and it has been used as a sustainable index widely. However, the debate on eco-efficiency has somehow left behind the question of limits; no consideration of a relative size as well as the impossibility of weighting among evaluation factors(parameters). Therefore, eco-effectiveness using a vector concept which represents the position of an object in space in relation to an arbitrary reference point is proposed as a new evaluation index. The case study of washing machine in the end of life stage was performed and the comparative analysis with the eco-efficiency was conducted. Although frame(steel) is the most economic material(or part) in the washing machine, the priority is low in eco-efficiency but the highest priority in eco-effectiveness. As shown in eco-effectiveness formula, it is possible to consider the relative size which can not be considered in the eco-efficiency. Furthermore, it has a benefit to give a weighting factor among evaluation factors(parameters). Although the concept of eco-effectiveness is more beneficial than that of eco-efficiency, there still needs to confirm whether distortion occurs in the result when convert the normal value into the relative value.

전과정평가(LCA)와 간략전과정평가(S-LCA)의 비교분석 및 철도산업에의 활용방안

양윤희(Yang Yun-Hee),이건모(Lee Kun-Mo),정인태(Jeong In-Tae),김용기(Kim Yong-Gi) 한국철도학회 2005 한국철도학회 학술발표대회논문집 Vol.- No.-

According to the ISO 14040(1997), Life Cycle Assessment is not the tool only focusing on the emissions from the manufacturing processes of a product, but the tool also expressing environmental adverse impact quantitatively through product’s entire life cycle (i.e. raw material acquisition, manufacturing, transportation, use, and end-of-life stage). Because the LCA for EMUs(Electrical Multiple Units), however, requires astronomical time and cost for collecting big amount of data. it is inevitable to bring in the simplified LCA methodology, In this study, we introduced standardized methodology of LCA in the world, and found appropriate S-LCA methodology for EMUs. Furthermore, we recommended how to evaluate the environmental impact of EMUs in detail and precisely, using the S-LCA.

전동차 내장판넬의 환경성 정보 공개 및 정책 활용 방안

천윤영(Yoon-Young Chun),정인태(In-Tae Jeong),이건모(Kun-Mo Lee),김용기(Yong-Ki Kim) 한국철도학회 2006 한국철도학회 학술발표대회논문집 Vol.- No.-

The aim of this paper is to show how LCA(Life Cycle Assessment) is used as a tool to evaluate the environmental burdens associated with EMU(Electronic Motor Unit), especially one of main components, an interior panel. Thus, the LCA results are polished into the general environmental product declaration format to communicate with the industrial and institutional customers. The format includes the product information and environmental information. In the list of environmental information, profile is consisted of two major results from the LCA study. One is the inventory analysis and the other is the characterized impact results. The format shown in this paper can be the one of option to choose environmentally preferable product and suggestion aimed at the institutional consumer such as government procurement office and corporation"s purchasing department.

전동차 생태효율성(Eco-efficiency)방법론 개발

최요한(Yo-Han Choi),정인태(In-Tae Jeong),이건모(Kun-Mo Lee),김용기(Yong-Ki Kim) 한국철도학회 2006 한국철도학회 학술발표대회논문집 Vol.- No.-

To improve the environmental performance Electric Motor Unit(EMU) during it"s life cycle, quantitative environmental performance Assessment(Life Cycle Assessment; LCA) is implemented. But the result of LCA is not easy to apply on environmental communication, EMU ecodeign, environmental friendly EMU marketing and so on. Because it is not only hard to understand but also should consider economical and technical limitation, etc. So EMU Eco-Efficiency(E/E) is developed which could use to improve EMU environmental performance. EMU E/E is indicator which shows value generated by EMU through it"s life cycle, while EMU also generates environmentla impact. The value generated by EMU vs. the environmental impact of EMU varies by choosing which value parameter and environmental impact parameter. Thus it is important that choose appropriate parameters. This study shows two EMU E/E. EMU E/E Type I stands for EMU operational efficiency vs. EMU environmental impact on Global Warming(GW). And EMU E/E type II stands for EMU annual total income by fare vs. EMU environmental impact on GW. The case study shows that EMU E/E can be a indicator of EMU environmental improvement as indicator which consider environmental impact and value of EMU simultaneously.

주사슬에 말로네이트기를 가지는 신규 폴리에스테르의 합성과 광분해 특성을 이용한 형광 이미지 패터닝

정선주(Seon Ju Jeong),곽기섭(Gi Seop Kwak),정인태(In Tae Jung),이동호(Dong Ho Lee),노형진(Hyung Jin Roh),윤근병(Keun Byoung Yoon) 한국고분자학회 2008 폴리머 Vol.32 No.1

PC 및 프린터 폐기단계의 전과정목록(LCI) DB구축

양윤희(Yun Hee Yang),정인태(In Tae Jeong),임형순(Hyeoung Soon Lim),이건모(Kun Mo Lee) 대한환경공학회 2005 대한환경공학회 학술발표논문집 Vol.2005 No.12