• Journal of Energy Engineering
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• v.10 no.3
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• pp.177-182
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• 2001

This paper aims at evaluating HSDI diesel passenger cars introduction. The result of economic analysis after accounting for the life cycle cost per car shows a saving of 13,836 thousand won in fuel cost per diesel car assuming a life of 10 years and the annual travel distance of 20,000km. Assuming an average travel distance of 20,000km and a 10% increase in sales of diesel passenger car, the social benefit starts to accrue from the year 2002 and, in 2010, is estimated to be 154.1 billion won relative to the gasoline passenger car. The cumulative social benefit up to 2010 under the same assumptions is expected to reach 636.8 billion won.

• 한국노년학
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• v.31 no.3
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• pp.711-732
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• 2011

The purpose of this study is to understand the meaning and essence of aged life, which Korean elderly experience in real life and restructure them in the context of time and culture. In order to do so an in-depth interview was done with 15 elderlies over the age of 60 living in Hwaseong City, an urban-rural composite area in Gyeonggi Province where diverse elderlies could be found. In result, first, Korean elderly's understanding of aged life had physical, familial, economical, leisure, and social restoration aspects. Second, it was found that the degree of understanding about preparation for aging and preparedness is quite low. Third, as the gap between actual preparation for aging and aged life that elderly dreamed of became wider 'resentment on children', 'denial of reality', 'physical and economical change', and 'experience from prolongation of life-cycle' was found. Based on such results following suggestions could be made. First, the awareness of aged life and preparation for aging should be strengthened and there is a need for diverse educations aiming successful aged life. Second, elderly welfare policy and practical intervention with an integrated perspective based on the realm of life-cycle are demanded. Third, there is a need to strengthen the Aged Income Maintenance System for existing elder generation. Fourth, an intervention about adaptation and coping means of life event is needed. Lastly, there is a need to expand and carry out the aged life planning program for future elder generation.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.33 no.3
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• pp.1143-1151
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• 2013

Reasonable methods are needed to predict the noise level of new/existing roads and to select means of noise reduction. In this study, the noise reduction effects of both soundproof walls and quiet pavements were predicted. The noise reduction effects of quiet pavements were predicted by measurement data obtained using the CPX method in test pavements. The noise reduction effect was predicted by KHTN program when applied to soundproof walls and quiet pavement. As a result, the predicted noise level was similar to the measured one. The design method was suggested by an economic analysis using noise benefit of predicted noise reduction. The research suggests that the optimum alternative has to be determined using noise prediction method and life-cycle cost analysis.

• Journal of Korean Academy of Nursing
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• v.29 no.3
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• pp.700-710
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• 1999

Promoting women's health lifestyles are important due to their connection to family health. The purpose of this study was to analyse women's health lifestyles(HPL) and their effects on women's life-cycle, so in order to develop a program in a women's health care center. The subjects included were 1080 women over 18 years old living in Wonju city, and were selected by stratified and purposive sampling. The data were collected through a questionnaire and interview. The Cronbach $\alpha$, %, mean, ANOVA, Pearson's correlation, and regression in SPSS PC Win. package was used to analyze the data. The sample was sepernted into three groups premarital group 20.2%(premarital women between 18 and 40 years old), delivery and children rearing group 49.9%(marital women between 18 and 40 years old), over middle agedelderly group 29.9%(women over 41 years old). Significant difference were found in the HPL according to group. Also, relating variables, such as self-efficacy, family functions, health locus of control and gender role perception that were considered relating variables to HPL significantly differed among the three groups. HPL significantly correlated with self-efficacy, family functions, HLOC and gender role perception in all participants and at all groups. The regression analysis of HPL was interpreted 40.6% with relating variables, self-efficacy, health attention, family functions, and internal locus of control, health perception, power other locus of control and chance locus of control in all participant. Self-efficacy, family functions, health attention were considered important variables in premarital group, self-efficacy, family functions, internal locus of control, health attention, health perception and power of control were important in delivery-rearing group. Self-efficacy, health attention, internal locus of control, family functions and health perception were important in middle aged-elderly group. As a result, we found the differences HPL scores and relating variables according to life-cycle groups. Therefore, we should prepare health promoting education programs for women according to women's life cycles. Also we suggest that women's health care centers based on communities was needed for proper management of women's health.

• 한국공간정보시스템학회:학술대회논문집
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• 2000.06a
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• pp.93-105
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• 2000

GIS is a powerful toolbox in managing spatial data associated with attribute data. However GIS is short of spatial analysis function and graphic user interface(GUI) function in dealing with dynamic planning problems. Decision Support Systems(DSS) make up for the shortage of GIS by providing GUI function, modeling function and database function. Spatial Decision Support Systems(SDSS), a new kind of DSS, incorporate display function, basic spatial analysis function and manipulation function of spatial data and attribute data of GIS and GUI function, modeling function and database function of DSS in dealing with spatial planning problems. Planning Support Systems(PSS) add more advanced spatial analysis function and intertemporal function to the functions of SDSS. This study focuses on the modeling of a PSS for capacity expansion of water-distribution network depending upon land use planning by using GIS, value engineering(VE) and life cycle costing(LCC). The PSS shows a guideline about the investment of water-distribution networks related to urban growth management through generating certain numbers of dynamic alternatives to supply the amount of water caused by land use planning.

• Proceedings of the Korea Water Resources Association Conference
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• 2017.05a
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• pp.293-293
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• 2017

하천복원 또는 서식환경조성에 있어서 흐름영역을 통한 하천생태계 서식처 공간의 조성은 매우 중요하며 최적서식공간을 조성하기 위한 공간 확보 및 복원의 기술은 가장 중요하게 개발해야할 대상이다. 본 연구에서는 공간 확대에 따른 수환경 변화가 어류 물리서식처에 미치는 영향을 분석하기 위해 2차원 물리서식처 모형인 River2D를 적용하였다. River2D의 구동에 필요한 지형데이터는 만경강 유역의 봉동, 소양, 하리 3개의 지점을 경계지점으로 하여 대상영역 내 저지대 상습 침수구역인 만경강 본류와 소양천 합류지점을 복원대상지로 선정 후, 이 구역의 현재하도(공간복원전)와 합류부에서 제방을 없애 공간을 확보한(공간 복원후) 하도의 지형을 구축하였다. 그리고 과거 만경강 봉동일대에서 출현하였던 감돌고기를 대상어종으로 하여 감돌고기에 대한 생애주기별 서식처 적합도 지수(HSC)를 산정한 결과를 분석에 이용하였고, 유황조건은 IHA를 이용하여 산정된 5가지 유황조건을 경계조건으로 하여 분석을 실시하였다. 가중가용면적-유량관계곡선의 도출을 통해서 최적유량 산정시 중요한 지표인 WUA의 산정결과 현재 하천공간보다 공간 복원후 하천공간이 더 많은 가중가용면적을 확보하고 있음을 알 수 있고 동일한 유황의 조건에서 하천공간의 확보 및 복원을 통해 최소유량의 최대서식처 개선효과를 확인할 수 있었다. 또한 공간복원 후에 감돌고기에 대한 최대 가중가용면적은 20.4% 증가하였고, 최적유량변동은 20m3(57.1%) 저감하는 것을 확인할 수 있었다. 감돌고기의 생애주기별 복합서식처 적합도 분포결과는 복원후 전체 공간분포 중 소양천 합류부 및 복원 홍수터에서 서식처 적합도의 공간분포가 높게 나타났고 가중가용면적도 복원후 산란기(4~6월)에 57.7%, 성장기(7~8월)에 6.0%, 성어기(9~11월)에 41.9%로 가중가용 면적이 증가하였으며, 특히 산란기와 성어기의 가중가용면적이 하천공간 확보를 통해 크게 증가되었다. 이러한 결과들을 바탕으로 수생태계에서 하천어류의 서식환경을 보호하고 유지하기 위해서 적절한 서식공간의 확보가 선행되어야 하며 복원사업에 따른 제방제거 및 하상변동으로 발생하는 유속의 변화로 인한 다양한 영향을 충분히 검토하여야 할 것으로 판단된다.

• Journal of the Architectural Institute of Korea Planning & Design
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• v.34 no.3
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• pp.23-34
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• 2018

Due to a waste of energy in korea, about 525,000 which are 75 percent of total buildings are at least 15 years old buildings that need remodeling. There are two current remodeling systems. One is a remodeling system to reduce a waste of resources from the reconstruction. The other is a green-remodeling system aimed to energy savings and reducing environmental costs. This study is to analyze quantitatively these current systems with respect to the cost-benefit caused by the life cycle and suggests the political and institutional implications through the interpretation of the results. For a quantitative analysis, we analyzed reducing maintenance costs and rent benefits with simulation by using opportunity costs, construction costs, plan costs and supervision costs as expense variables and using the reduced floor area ratio, institutional incentives, energy, water resources and certified emission reduction(CER) as benefit variables. As a result of the empirical study, the green-modeling was more beneficial in the field of environment such as the energy savings, however, the final benefits of remodeling which has no green building certification costs but more floor area ratio incentives were more economical. The green-remodeling system focused on reducing environmental costs and energy savings needs a equatable institutional incentive system.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 2003.05a
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• pp.280-284
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• 2003

효과적인 CRM(고객관계관리)을 위해서 고객의 가치를 파악하는 것은 매우 중요하다. 모든 고객이 같은 가치를 제공하지 않기 때문에 차별적인 서비스를 통해 장기적인 관점에서 기업의 수익을 최대화한다는 것이 CRM의 기본전제가 되기 때문이다. 기존의 고객가치를 측정하는 것은 LTV(고객생애가치)를 중심으로 연구되어 왔다. 그러나 이러한 LTV는 환경의 변동성, 고객의 변동성 등 많은 불확실성을 안고 측정될 수밖에 없고 단순히 과거 기업에게 제공된 과거 수익의 추이를 고려하기 때문에 실제 세분화 시 간과하게 되는 점이 많다. 따라서 본 논문에서는 단기적인 활용관점에서 고객의 이탈률(Churn Rate)을 고려하여 고객의 가치를 현재가치, 잠재가치로 나누어 측정하고 이를 통해 고객 세분화의 방안을 제시해 본다.

• 한국정보통신설비학회:학술대회논문집
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• 2008.08a
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• pp.540-544
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• 2008

인프라시설은 한번 설치하면 오랜 기간동안 사용해야 하는 시설로서 설치단계에서부터 가치에 기반하여 최적으로 구축하는 것이 무엇보다도 중요하다. 지금까지 설치된 인프라시설은 초기 투자비용만 고려되었을 뿐, 생애주기비용(LCC)과 성능이 고려되지 않아 효율적인 유지관리와 제대로된 자산관리를 하지 못하고 있는 것이 현실이다. 하지만, 앞으로의 시설 구축 개념은 최저 비용 개념에서 최고 가치 개념으로 변해가고 있으며, 정부에서도 100억원 이상의 건설공사에 LCC 및 VE 검토를 의무화 하고 있는 상황으로, 인프라시설 구축 시에도 VE 대안평가가 필요하다는 의견이 많이 대두되고 있다. 따라서, 본 논문에서는 인프라시설 중 하나인 통신전주를 대상으로 VE 대안평가를 실시하여 향후 설치될 통신 전주에 대한 의사결정 가이드라인을 제시하고, 이를 체계적으로 지원할 수 있는 인프라시설 VE 평가시스템에 대한 내용도 함께 소개하여 인프라시설에 적용 가능한 VE 대안평가 기법의 초석을 마련하고자 한다.

• Proceedings of the Korean Society for Information Management Conference
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• 2013.08a
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• pp.119-122
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• 2013

정부 및 기관, 개인에게 부가가치를 제공하는 공공 오픈데이터를 Linked Data로 발행하기 위한 다양한 시도들이 계속되고 있는 현 상황에서, 공공 오픈데이터인 '서울역사박물관의 유물 데이터'를 대상으로 데이터 정제 및 Linked Data로 발행하는 작업을 수행하여 발행 과정에서 나타나는 제약사항들에 대해 검토하였다. 이를 통해 정부 및 각 기관들, 개인이 데이터 발행자 및 이용자의 입장에서 공공 오픈데이터를 활용할 때 고려해야 할 사항들로 데이터 공개 시 데이터에 대한 명확한 설명 제시, 데이터 생애주기에 걸쳐 양질의 데이터 생산 및 공개, 데이터 발행자와 이용자 간의 지속적인 커뮤니케이션을 제언하였다.