• 대한기계학회:학술대회논문집
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• 대한기계학회 2001년도 춘계학술대회논문집D
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• pp.732-737
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• 2001

The mathematical method was developed and numerical analyses were carried out with various parameters to provide substantial data for optimal design and operation of urban utility systems. The composition of systems and their specifications, such as co-generation system, heat pump system, incineration system and other heating and cooling system could be obtained through these analyses for various resource and energy requirements in urban area. As results the system constituents and operating characteristics, and their economic performances such as the value of objective function, initial and an operating costs were discussed for various load patterns. The effective system design method and the excepted effects of the several unused energy recovery systems were also briefly discussed with the variation of the buildings and facilities species and their capacities.

• 대한안전경영과학회:학술대회논문집
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• 대한안전경영과학회 2008년도 추계학술대회
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• pp.405-419
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• 2008

It is expected that the change of industrial structure of Knowledge based economy, and service based economy would affect on economic life of physically-challenged person with no exceptions. There have been some former studies which have been misunderstood the employment of disabled due to the declining employment of the disabled and prejudice to the disabled based on biased perspective and public opinion. This study have analyzed the employment conditions of the ordinary workers and disabled workers out of those prejudices and biased opinions. Wage, economic activity ratio, age, educational background and industry those 5 parameters are brought for analyzing the two comparison group. Each parameter have compared based on the statistical data of ordinary workers and disabled workers for past 7 years. Weight between each parameter have been drawn by collecting the experts' opinion using AHP(Analytic Hierarchy Process), and utility of employment of two comparison groups have been estimated through progress inclination of each parameter. Through the estimated outcome, present condition and controversial issues and way of improvement of domestic employment of ordinary workers and the disabled is mentioned.

• 복식
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• 제51권7호
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• pp.75-92
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• 2001

The purpose of this study was to investigate the grandparents' clothing image perceived by adolescents. Self-administered questionnaires were distributed and collected from 547 middle school and high school students from March to April in 2000. Frequencies, percentages, mean. and standard deviation were calculated. χ²-test, t-test, F-test, and ANOVA were used for group differences, and Duncan's multiple range test was used. The results were as follows : 1. Grandparents' clothing images were classified into four images of elegant, comfortable, fashionable and active. 2. Adolescents in middle school, in high economic status, in higher academic achievement, and who pursuited fashion perceived favorable grandparents' clothing images as more favorable. Adolescents perceived clothing images of younger grandparents with higher economic status, or grandmother as more favorable. Adolescents who had a good affection and a good-cognition to their grandparents perceived their clothing images as more favorable. Adolescents perceived their mother-side-grandparents clothing images as more favorable. 3. Grandparents were segmented into 3 groups of the fashion pursuit, the utility pursuit, and the stagnated according to their adolescents' clothing image perception. The adolescents in higher economic status, who pursuited fashion, and had a favorable cognition to their grandparents tended to perceive their grandparents as the fashion pursuit. Adolescents who had a high affection to their grandparents tended to Perceive their grandparents as the utility pursuit. Adolescents perceived their mother side grandparents as the utility pursuit.

• 국토계획
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• 제53권6호
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• pp.61-85
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• 2018

The purpose of this study is to provide a logical basis for guarantee the effectiveness of the tax support system, which is one of the main measures to prevent the side effects of commercial gentrification. For this purpose, this study analyzes the combination of tax support to replace the loss of net rental income due to stabilize commercial rents and annual rent increase rate that can be substituted through the tax support system based on economic utility of commercial lessors in Seoung-dong, Seoul. The result of this study shows that the tax support system can be used as an effective means to substitute a considerable portion of the net rental income loss due to stabilize commercial rents of Seongsu-dong. However if the rent price continues to rise every year, the tax support system does not work. In order to guarantee the sustainability of the tax support system, annual rent increase rate should be kept below a certain level.

• 산경연구논집
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• 제10권1호
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• pp.39-49
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• 2019

Purpose - Previous studies examined effects of sharing economy in the fields such as accommodation and automobile sector, while there are lack of researches in the field of skill-sharing economy. By classifying skill-sharing into general and special skill-sharing, this study explored effects of variables such as transaction utility, social utility, sustainability utility, emotional utility, economic utility, and trust utility, on attitudes, intention, satisfaction, and loyalty of demand (i.e., customers) and supply (i.e., providers) sides, potential, and actual customers. Research design, data, and methodology - Data were collected via both online and offline surveys. This study applied factor analysis and multiple regression analysis for findings. Results - Results show that utilities for general suppliers' skill-sharing are significant than other cases. Among utilities, this study found that trust utility shows significant for the cases of special customers', general suppliers' and special suppliers' potential skill-sharing. The results implies that trust is crucial in the transaction of the sharing economy. Conclusions - Enhanced managerial systems help resolve issues on the sharing economy. This study provides implications what are positive effects of skill-sharing economy and recommends proper establishment of the sharing economy.

• 한국산학기술학회논문지
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• 제21권8호
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• pp.563-571
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• 2020

공동구의 설치 목적은 반복굴착 방지, 재해·재난 예방 등이나 국내 공동구는 신도시 개발 계획에 포함되어 건설되었으며, 현재 기관별 의견 충돌 및 재원 조달의 문제로 공동구 설치는 어려운 실정이다. 본 논문에서는 신도시 및 기존 시가지의 공동구 활성화 개선방안 제시를 위하여 단계별 절차를 기준으로 연구를 진행하였다. 먼저 공동구 관련법 및 현황 조사를 수행하였으며, 현황에 대한 검토 및 분석을 기반으로 문제점을 도출하였다. 마지막으로 문제점 해결을 위한 개선방안을 제시하는 방법을 적용하였다. 관련법과 문제점을 기반으로 공동구 설치의무규모 선정을 위하여 최근 개발사업(도시개발, 택지개발, 도시재생) 현황을 분석하였으며, 공동구 설치의무규모 200만㎡ 이하에서의 경제적 타당성 분석을 통하여 적정 규모를 검토하였다. 신도시 및 기존시가지를 고려하여 공동구 추가설치지역 및 점용기관의 부담 경감을 위한 관리비 지원사항을 제안하였다. 또한 공동구 설치지역 검토를 위해 기본계획 등에 관한 세부 사항에 대하여 개선방안을 제시하였다. 본 논문은 향후 지역의 공동구 계획 및 설치 시 이해관계자의 원활한 업무 수행에 도움이 될 것으로 판단된다.

• 대한토목학회논문집
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• 제39권6호
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• pp.903-911
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• 2019

공동구는 필수적인 사회기반시설 중의 하나이나, 국토계획법의 공동구 설치의무규모(200만㎡)로 인하여 공동구의 설치가 어려운 실정이다. 본 논문에서는 공동구 설치 활성화를 위하여 기존시가지에서의 공동구 설치에 대한 타당성을 분석하였다. 타당성 분석을 위하여 관련법규를 근거로 규모를 4가지로 분류하였으며, 타당성과 경제성 분석을 활용하여 관련지표 선정 및 평가를 진행하였다. 그 결과 기존시가지의 규모에 적합한 터널식 공동구는 3종/4종으로 나타났으며, 200만㎡ 이상의 신도시는 5종의 개착식 공동구가 적합한 것으로 분석되었다. 현재 공동구 설치 의무 규모인 신도시 200만㎡ 이상에서 개착식과 기존시가지의 터널식 공동구의 종합평가결과가 많은 차이를 보이지 않으므로, 기존시가지에서 다양한 규모의 공동구 설치가 타당하다는 것을 제시하고자 한다.

• 한국산학기술학회논문지
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• 제19권3호
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• pp.260-266
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• 2018

고객의 기술 채택에 영향을 미치는 고객효용도의 개념에 대한 이해는 다세대 기술의 확산 및 대체 과정을 이해하는데 중요하다. 본 연구에서는 다세대 기술의 속성 기반 고객효용도의 개념에 대해 정의하고, 고객효용도를 측정할 수 있는 모형을 개발하였다. 문헌리뷰 및 모형화를 바탕으로 다세대 기술의 속성 기반 고객효용도에 대해 정의 및 측정 모형을 제시하였고, 도출한 모형의 정합성을 반도체 산업 사례를 바탕으로 검증하였다. 다세대 기술에서 속성 기반 고객효용도는 세대별로 또는 같은 세대 내에서 시간별 변화를 고려해야하고, 기술적 속성과 경제적 속성에 대해 가중치를 고려한 모든 효용도들의 합으로 정의된다. 또한 속성 기반 고객효용도는 효용도 변환표를 통해 속성들의 값을 효용도로 전환한 후 가중치를 고려한 모든 속성들의 효용도의 합으로 모형화 가능하다. 본 연구를 통해 다세대 기술이 확산 및 대체되는 과정에서 고객의 기술 채택의 근본 동인으로서 영향을 미치는 고객효용도에 대해 이해 가능하고, 고객효용도를 바탕으로 확산 및 대체 경로를 예측하여 기술전략을 수립하는데 유용할 것이다.

• 산업경영시스템학회지
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• 제5권7호
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• pp.33-42
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• 1982

The standard theory of production treats human and non-human inputs in the same way. Inert Areas Theory drops this assumption. One distinction is obvious. Human capital, the source of human inputs, can not be purchased outright by firms. Usually what is purchased are units of labor time. What is critical is directed effort, at or beyond some level of skill. Direct effort, however, involves choice and motivation, and these are the critical variables left out of the standard theory. Leibenstein introduces the concept of "inert areas" by which he means "a set of effort positions whose associated levels of utility are not equal but in which the action required to go from a lower to a higher utility level involves a utility cost that is not compensated for by the gain in utility." This idea is used when discussing the behavior of firm's management.f firm's management.

• 국토계획
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• 제54권1호
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• pp.52-66
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• 2019

Travel is a factor that stimulates the vitality of the urban and is widely used as an indicator of sustainable growth of the region. In Korea, however, no studies has been made to predict changes in traffic and calculate the accessibility of the region by comprehensively considering the socio-economic conditions of the travelers. The purpose of this study is to classify commuters according to the household income and to analyse the traffic characteristics of each class. The analysis results are aggregated into two. First, the analysis of study found different transport characteristics for different income classes. This is the result that underpins the argument of a previous study that suggested that a discriminatory approach is necessary for each income in determining the accessibility of the region. Second, this study calculated utility values differently for each income class based on the transit time and cost required between each zone. Through these measures, transport characteristics were analyzed by income class using indicators that considered transportation infrastructure, and socio-economic conditions of the travelers. This study is meaningful in that it provided the basis for calculating the accessibility that could take into account the activities of the housing consumers in establishing domestic housing policies.