• 한국가정과교육학회지
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• 제14권3호
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• pp.77-88
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• 2002

This study was designed to examine students' utility cognition and related variables on the ‘understanding of family and work’ in the Home Economics course. The subjects were 503 middle and high school students, and university students in Jeonju city. The results are as follows : 1) The level of utility cognition on the ‘attitude of sexuality’ was found to be relatively high in the Home Economics course. 2) There were gender difference in the evaluation of learning environment. and grade differences in the evaluation of learning environment, participation in class of Home Economics, needs for Home Economics, evaluation of learning environment. 3) The utility cognition of Home Economics course significantly differed by gender, participation in class of Home Economics. needs for Home Economics, evaluation of learning environment. and Perception of Home Economics. 4) The needs for Home Economics emerged as the most important variable in the utility cognition of Home Economics course.

• 반도체디스플레이기술학회지
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• 제23권2호
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• pp.45-49
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• 2024

Blockchain has gone beyond the proof-of-concept level and is converging with various industries and fields, moving toward the service development and commercialization stage. However, although various blockchain technologies and services are emerging, their development is quite slow and their widespread application to various industries is difficult. Accordingly, it is necessary to identify areas with high introduction utility when applying blockchain services in actual industries and to develop a method to evaluate the utility of blockchain services for this purpose. This paper proposes a framework for evaluating the utility of blockchain services using a multi-criteria decision-making model. Through a case study on the utility evaluation of blockchain services, the proposed framework was applied to domestic and foreign blockchain services to evaluate its utility and verify its applicability. It is expected that the proposed framework will be able to identify industrial and functional characteristics where actual blockchain services can be introduced and demonstrate effective utility and can be used to develop blockchain services in various industrial fields.

• 한국경영과학회:학술대회논문집
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• 한국경영과학회/대한산업공학회 2003년도 춘계공동학술대회
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• pp.972-975
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• 2003

The purpose of this study is to integrate Decision Theory Approach(DTA) and OR Theory Approach(OTA) systemically. and to develop Combination Theory Approach to build an optimal R&D project portfolio by strategies. To Integrate two approaches. Utility theory is introduced. Evaluation Results aye converted into utility values by the utility functions and the values are optimized by 0-1 programming. Scoring method and Integer programming is used to evaluation a correspondence with a goal and to allocation the limiting resources. And utility function is used to reflect the preference of decision makers on the project evaluation.

• 한국수학교육학회지시리즈A:수학교육
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• 제58권1호
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• pp.41-54
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• 2019

The purpose of this study was to examine the effects of career identity on learning persistence and academic achievement, and mediating effect of utility value. To examine the effect of mediating role of utility value, we divided utility value into two types, utility value of daily matters and utility value of career. This study was conducted on 228 senior students in high school, to investigate relations among career identity, utility value, learning persistence and academic achievement in mathematics, by using the structural equation model. The results are as follows. First, career identity positively predicted learning persistence in mathematics. Second, career identity positively predicted the utility value of daily matters and career. Third, both type of utility value in mathematics positively predicted learning persistence in mathematics. Fourth, the utility value of daily matters and career, in mathematics subjects, showed differential predictability toward learning persistence and academic achievement. Both type of utility value in mathematics positively predicted learning persistence, but showed differential predictability toward learning academic achievement. Specifically, the utility value of daily matters in the near future did not predict the academic achievement, but the utility value of career in the distant future positively predicted the academic achievement. Fifth, the utility value was found to play a mediating role in the relationship between career identity and learning persistence. Based on the results of this study, implications for mathematics education were discussed.

• 기술혁신학회지
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• 제20권1호
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• pp.127-152
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• 2017

중국의 실용신안은 발명 특허를 보완하기 위한 것으로, 신청기한이 짧고 수권속도가 빠르며 발명 특허와 마찬가지로 독점권이 있어 기업이 빠른 속도로 시장을 선점하는데 유리하다. 그러나 중국에서의 실용신안권은 실질 심사를 하지 않기 때문에 안정성이 낮은 편이고 무효 기각된 가능성이 높기 때문에 발명특허보다 보호에 어려움이 있다. 중국은 국내 중소기업의 발명과 창조 활동을 적극 장려하고 자국의 실용신안을 보호하기 위해 실용신안에 특허권평가보고와 비슷한 특허보호정책을 제정하였고 특히 특허침해소송 시 특허권평가보고를 근거로 삼아 실용신안 특허권자와 특허권 권리분쟁의 당사자를 사법적으로 구제할 수 있는 길을 열어 주었다. 많은 전문가들은 특허권평가보고 제도를 구축함으로서 실용신안 특허권의 안정성을 높일 수 있다고 주장한다. 또한 피고가 답변기한 내에 특허권 무효심판요청 시 특허권평가보고가 실용신안 특허권에 신규성, 진보성의 근거를 제시하지 못하거나 특허권이 안정성이 없다고 기록하지 못할 상황에서 법원은 심판을 중지하지 않고 재심사위원회의 특허권 무효심판 결정의견을 기다리지 않아도 되어 사법 절차의 효율을 높이고 특허권자의 권리유지 시간을 가속화하는 데 유리하다. 그러나 실질적인 특허권 침해 분쟁에서 특허권평가보고서제도와 무효심판제도는 충돌이 일어날 수 있다. 그러므로 본문에서는 현행 중국의 실용신안제도를 분석하고 한국의 실용신안제도와의 비교를 통해 중국의 특허권평가 보고서제도의 본질과 역할을 확인하고 실용신안 특허권 침해 소송의 실제 사례를 통해 특허권평가보고의 결과로 인한 변수를 분석하여 특허권평가보고와 무효심판이 충돌하는 실질적인 원인을 규명하고 특허권 평가보고서제도의 유효성과 권리 보호를 위한 특허권평가보고서제도의 활용에 관해 연구해 보고자 한다.

• 한국터널지하공간학회 논문집
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• 제24권6호
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• pp.715-724
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• 2022

최근 기반시설관리법('20.10) 시행으로 전기, 통신, 상수도, 난방 시설과 같은 필수적인 라이프라인(Life-Line)을 공동으로 수용하는 공동구의 중요성이 높아진 실정이다. 현행 공동구 유지관리 체계는 사고예방적인 안전성 위주의 평가방식으로 관리되고 있어 효율적인 유지관리를 실시하는데 한계가 있다. 이에 본 연구에서는 공동구 시설물에 대한 성능을 정량적으로 평가하기 위한 기준을 제안하기 위해 델파이 기법을 통해 성능평가 항목이 도출되었고, 계층화 분석법(AHP)기법을 통해 각 항목들에 대한 가중치가 산정되었다. 향후, 현장적용을 통해 수정 및 보완을 한다면 보다 합리적인 공동구 성능평가 기준이 마련될 수 있을 것으로 판단된다.

• 경영과학
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• 제27권1호
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• pp.45-60
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• 2010

This study evaluates life annuity plans based on two different types of measures : financial benefit and utility on consumption. The financial benefit is measured by Money's Worth (MW) ratio and return on annuity. For the measure of utility, an optimization problem is formulated with the objective of maximizing utility on consumption. To solve the optimization model, we use Dynamic Programming (DP) technique. The both types of measures are applied to cases of Korean pre-retirees at age 40 with different accumulation years of annuity (i.e. level of annuity asset at the age of retirement) and different timings of annuitization. Our results generally indicate that the utility based optimization model is superior to the financial measures in terms of providing a better evaluation of an annuity plan due to its capability to consider an individual's financial situation during his/her retirement period. Also, they suggest that the level of annuity asset is an important factor when an individual determines the optimal annuitization timing.

• 한국안전학회지
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• 제30권5호
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• pp.29-36
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• 2015

Common utility tunnel is essential to the daily lives of people underground utilities (electricity, gas and supply facilities such as water, communication facilities, sewer facilities, etc.) to improve the appearance by co-acceptance and disaster prevention, important for the conservation of the city's population was concentrated road construction the city-based facilities. There is recognition of the importance of the various supply treatment facilities in common utility tunnel as infrastructure to accommodate joint according to the city expanded, the demand for infrastructure. In this paper, a cost-benefit analysis using a one-time occurrence, without simply relying on cost or current cost, project manager for the city-dimensional feasibility study conducted, the user level of the maintenance costs and user costs, including social costs items from various angles can be investigated and proposed a mechanism of economic feasibility common utility tunnel. Evaluation of the proposed technique is cost-benefit and cost caused by installing common utility tunnel the existing pipeline area - was investigated by the benefit analysis, extended and repeated common utility tunnel installation depends much affected by the excavation, so users of reducing the number of repeat excavation convenience can be seen that this occurs.

• 한국문헌정보학회지
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• 제37권2호
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• pp.107-134
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• 2003

이 연구의 목적은 우리 도서관이 생산해 내고 있는 목록의 가치를 '유용성'의 관점에서 논의하는데 있다. 특히, 도서관 이용자의 관점에서 도서관목록이 그들의 정보요구를 충족시키는데 얼마나 유용하게 활용되고 있는지에 대해 실증적으로 분석해 보고자 하였다. 이를 위해, 목록이용자들의 견해를 중시하면서 도서관목록의 유용성을 측정해 낼 수 있는 체계적인 기준을 도출하였다. 그리고 이러한 기준에 근거하여 현 단계 도서관목록의 유용성을 직접 측정하였다. 유용성에 대한 측정 결과는 구체적인 사례와 함께 제시하였으며, 유용성을 저하시키는 요인을 상세하게 설명하였다.

• 한국안전학회지
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• 제31권3호
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• pp.143-155
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• 2016

Recently, a massive loss of life and property is occurring in Korea due to traffic accidents, with the rapid increase in cars. For improvement of traffic safety, the Korea Transportation Safety Authority intensively analyzes accident data in local governments with low traffic safety index, performs a field investigation to extract problems and offers local governments improvements for problems, by conducting the 'Special Survey of Actual Conditions of Traffic Safety' each year, starting 2008. But local governments cannot strongly push forward the improvement projects due to the limited budget and the uncertainty of the improvement plan effects. Therefore, this study suggested a model which applied the Utility concept to the AHP theory, in order to efficiently decide a priority of the improvement plans in accident black spots in consideration of the limited budget of local governments. The number of accidents in each spot for improvement and accident severity, traffic volume, pedestrian volume, the improvement project cost and the accident reduction effect were chosen as evaluation factors for deciding a priority, and data about the improvement plan costs and the accident reduction effects, traffic accidents and traffic volume in the spots to undergo the special research on the real condition of traffic accident in the past were collected from the existing studies. Then, regression analysis was carried out and the Utility Curve of each evaluation factor was computed. Based on the AHP analysis findings, this study devised a priority decision method which calculated the weight and the utility function of each evaluation factor and compared the total utility values. The AHP analysis findings showed that among the evaluation factors, accident severity had the biggest importance and it was followed by the improvement plan cost, the number of accidents, the improvement effect, traffic volume and pedestrian volume. The calculated utility function shows a rise in utility, as the variables of the 5 evaluation factors; the number of accidents, accident severity, the improvement plan effect, traffic volume and pedestrian volume increase and a fall in utility, as the variables of the improvement plan cost increase, since the improvement plan cost is included in the budget spent by a local government.