• 산업경영시스템학회지
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• 제24권68호
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• pp.51-65
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• 2001

This study is to make LCIA(Life Cycle Impact Assessment) easier as a methodology of environmental scores(called E-score) that integrated environmental load of each emission substance based on environmental damage such as in human health, ecosystem and resources category. The concept is to analyzes the LCI(Life Cycle Inventory) and defines the level of environment damages for human health, ecosystem and resources to objective impact assessment standard, and makes the base of marginal damage to calculate the damage factor, which can present the indication that can establish the standard value of environmental impact. First, damages to human health are calculated by fate analysis, effect analysis and damage analysis to get the damage factor of health effect as a DALY(Disability Adjusted Life Years) unit. Second, damages to ecosystem are calculated by fate analysis, effect analysis and damage analysis to get the damage factor of the effect as a PDF(Potentially Disappeared Fraction) unit through linking potentially increased disappeared fraction. Third, damages to resources are carried out by resource analysis and damage analysis for linking the lower fate to surplus energy conception to get damage factor as a MJ(Mega Joule) unit. For the ranking of relative environment load level each other, LCIA can be carried out effectively by applying this E-score methodology to the particular emission substances. A case study has been introduced for the emission substances coming out of a tire manufacturer in Korea. It is to show how to work the methodology. Based on such study result, product-designers or producers now can apply the E-scores presented in this study to the substances of emission list, and then calculate the environment load of the product or process in advance at any time and can see the environment performance comparatively and expected to contribute to the environmental improvement in view of environmental pollution prevention.

• 경영과학
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• 제27권1호
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• pp.107-116
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• 2010

There are several stage in corporate's life cycle such as foundation, growth, maturity or bankruptcy. A bankruptcy is very important for corporate in the life cycle. Especially, venture business' life cycle is short compare to other type of corporate. A lot of venture businesses have emerged and bankrupted soon in the market. Venture businesses' survival or bankruptcy have been influenced by not only external environment like the rate of exchange, oil price, and foreign exchange crisis but also internal environment such as efficiency, process, human resources, finance and CEO. In this paper, we attempt to examine financial factors and efficiency that influence on the venture businesses' survival and bankruptcy. The more venture businesses have high efficiency score, the more they have high probability of survival.

• 가족자원경영과 정책
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• 제7권1호
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• pp.135-152
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• 2003

This study examined which factors influence educational expenditure by family life cycle. Data for this study were from the 2001 Household Income and Expenditure Survey and consisted of a sample of 2,681 households. The results showed that the households having high school students had the highest educational expenditure and the households having middle school students had the highest ratio of educational expenditure to consumption expenditure. The education of household head, family type, the number of children, the age of the youngest child, and family income had significant effect on educational expenditure in all the stages of family life cycle. The results of this study will be useful for financial management of households and give suggestions for the government policy on education.

• 한국전산구조공학회:학술대회논문집
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• 한국전산구조공학회 1999년도 가을 학술발표회 논문집
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• pp.249-256
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• 1999

This study is intended to propose a systematic procedure for the development of the reliability-based seismic safety and cost-effective Performance criteria for design and upgrading of long span PC bridges. In the paper, a set of cost function models for life cycle cost analysis of bridges is proposed. The total life cycle cost functions consist of initial cost and direct/indirect damage costs considering repair/replacement costs, human losses and property damage costs, road user costs, and indirect regional economic losses. The damage costs are successfully expressed in terms of Park-Ang median global damage indices and damage probabilities. The proposed approach is successfully applied to model bridges in both regions of a moderate seismicity area like Seoul, Korea and a high one like Tokyo, Japan. It may be expected that the proposed approach can be effectively utilized for the development of cost-effective performance criteria for design and upgrading of various types of bridges as well as long span PC bridges.

• 가족자원경영과 정책
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• 제27권3호
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• pp.21-37
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• 2023

이 연구는 가족의 다양성 차원에서 1인가구의 보편화 현상에 주목하여, 김포시 1인가구 사례를 중심으로 1인가구의 생애주기별 생활실태 그리고 생활만족도를 살펴보았다. 조사는 김포시 거주 1인가구를 대상으로 2022년도 8-10월에 걸쳐 대면설문조사로 실시되었다. 생애주기별로 청년/중장년/노년기 1인가구로 집단을 구분하였고, 1인가구의 인구사회학적 배경, 개인생활 영역, 가족관계, 생활만족도 등의 문항을 통계분석에 활용하였다. 조사대상자 특성을 파악하기 위한 기술통계, 생애주기별 생활실태의 차이를 검증하기 위한 교차분석과 일원분산분석, 그리고 생활만족도에 영향 미치는 변수를 파악하기 위한 중다회귀분석을 적용하였다. 주요 연구결과로, 먼저 1인가구의 식생활관리, 의류관리, 주거관리, 가정관리, 자기돌봄, 경제생활, 여가생활 등에서 생애주기별로 유의한 차이가 나타났다. 1인가구의 생활만족도에 영향 미치는 변수로는 생애주기 즉 중노년기 보다 청년기일 경우 높은 수준으로 나타났고, 또 돌보아야 하는 가족원의 존재, 1인가구 형성의 자발성, 차별경험, 지역사회 인지수준, 유대 등이 유의한 영향을 미쳤다. 이러한 결과를 볼 때, 1인가구가 생애주기별로 다른 욕구 그리고 문제를 가질 수 있음을 확인할 수 있다. 이는 의식주생활, 가정관리, 자기돌봄, 경제생활, 여가 등 생활의 여러 영역에서 생애주기별 1인가구의 경험과 어려움의 차이를 반영하여 맞춤형의 정책과 프로그램을 제공할 필요가 있음을 시사한다.

• 대한토목학회논문집
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• 제36권2호
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• pp.297-305
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• 2016

2015년부터 한국에서 시행된 "탄소배출권 거래제"로 인해 각 분야에서 환경문제에 대응하고자 하는 움직임이 커지고 있다. 특히 환경부하량의 정확한 산출이 어려운 건설 분야에서는 ISO 14040 Series의 LCA (Life Cycle Assessment)를 적용하여 환경부하량을 산출하고자 하는 움직임이 지속되고 있다. 본 연구에서는 PSC beam 교량의 시공중 발생하는 환경부하량을 전과정 평가(Life Cycle Assessment, LCA) 방법론을 기반으로 분석하였다. 총 34개의 교량을 대상으로 분석한 결과, 건설 자재별 환경부하량은 레미콘(53.3%), 선재(9.6%), 철근(7.8%), 시멘트(6.8%) 합판(5.5%), 에너지(5.2%) 순으로 도출되었으며, 환경 범주별 환경부하량은 지구온난화(45.5%), 자원고갈(30.4%), 인체독성(10.5%), 광화학산화물생성(8.9%) 순으로 도출되었다. 향후 LCA를 기획 및 설계 단계에서 도입한다면, 환경부하를 고려한 의사결정을 수행할 수 있을 것으로 기대된다.

• 한국의류학회지
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• 제46권5호
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• pp.805-826
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• 2022

This study explored the process by which consumers purchase products from small fashion business owners via online and mobile channels. In addition, group types were classified given that the purchasing process depends on the consumers' life cycle. The consumer focus group interview (FGI) was conducted on 18 participants that were divided into six groups by age, work, and children. Results revealed that first, consumer journey comprised four stages. Factors influencing need recognition were "attention to information of social media influencer," "attention to information of affiliated groups," and "repeated advertising of SME products/brands." For information searching, "exploring purchase reviews," "environment for mobile shopping information exploration," and "continuous product tracking" were important factors. Purchasing and shopping stages were affected by "price-free, improvised purchase decision" and "convenient mobile payment system and point benefits." After the purchase, "active sharing and repeated purchase when satisfied" and "blocking relationships when dissatisfied" occurred. Second, six consumer groups based on the fashion life cycle are the "Platform lover," "Influencer follower," "Trust builder," "Novelty seeker," "Convenience seeker," and "New designer supporter." Ultimately, small business owners can develop the process of planning and selling fashion products more efficiently.

• 펄프종이기술
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• 제36권1호
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• pp.49-60
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• 2004

Life Cycle Assessment for the pulp, which is mainly used as the raw material of fine paper, base paper for food packaging and paper cup, has been carried out in this study to consider environmental aspects by quantifying the environmental emission and to evaluate its environmental impact potential. The system boundary was selected from cradle to gate stage(raw material acquisition, transportation of raw material and product manufacturing) of the product. Environmental impact was divided into 8 categories considering Korean situation: abiotic resource depletion, global warming, ozone depletion, acidification, eutrophication, photochemical oxidant creation, ecotoxicity and human toxicity. In Life Cycle Impact Assessment(LCIA) methodology phase, Ecopoint, Eco-indicator 95 and Korean eco-indicator were used and the results carried out by each methodology were compared. The results from this study were also compared with those of foreign study to verify the reliability of the results. The results of the study could be utilized as the basic data for Environmental Management System(EMS), Design for Environment(DfE) and Type III eco-labeling in the paper and paper-related industry.

• Computational Structural Engineering : An International Journal
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• 제1권1호
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• pp.59-69
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• 2001

This study is intended to propose a systematic approach for reliability-based assessment of life cycle cost (LCC) effectiveness and economic efficiency for cost-effective seismic upgrading of existing bridges. The LCC function is expressed as the sum of the upgrading cost and all the discounted life cycle damage costs, which is formulated as a function of the Park-Ang damage index and structural damage probability. The damage costs are expressed in terms of direct damage costs such as repair/replacement costs, human losses and property damage costs, and indirect damage costs such as road user costs and indirect regional economic losses. For dealing with a variety of uncertainties associated with earthquake loads and capacities, a simulation-based reliability approach is used. The SMART-DRAIN-2DX, which is a modified version of the well-known DRAIN-2DX, is extended by incor-porating LCC analysis based on the LCC function developed in the study. Economic efficiencies for optimal seismic upgradings of the continuous PC segmental bridges are assessed using the proposed LCC functions and benefit-cost ratio.

• 한국생명과학회:학술대회논문집
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• 한국생명과학회 2005년도 제45회 학술심포지움 및 추계학술대회
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• pp.35-35
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• 2005