• 품질경영학회지
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• 제27권2호
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• pp.143-151
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• 1999

In this thesis, a new test statistic is proposed for testing exponentiality against New Better than Used (NBU) alternatives. Our test statistic, which is based on a quadratic function of the order statistics from the sample, is readily applied in the case of small sample. Also, Our test statistic is more simple than the test statistic of Hollander and Proschan(1972).

• 품질경영학회지
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• 제33권2호
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• pp.22-31
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• 2005

Currently the problem of how to effectively integrate between six sigma and quality control circle is a matter of concern in the korea's manufacturing companies. In this paper we try to find the reasonable organizational alternatives and problem solving procedure by related literature surveying and empirical study. And we ascertain whether it is significant by conducting a survey on 51 six sigma consultants and black belts.

• International Journal of Reliability and Applications
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• 제2권2호
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• pp.137-146
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• 2001

In general, analysis of the decision problems in nuclear system management involves a simultaneous consideration of various criteria and decision alternatives. Sometimes, it is a complex, unstructured, ill-defined process incorporating the multi-criteria and the data of impreciseness. To cope with this analysis, a fuzzy hierarchical analysis methodology is proposed and demonstrated with a simple example.

• 한국기후변화학회지
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• 제7권3호
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• pp.315-324
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• 2016

The relevant ministries, including the Ministry of Environment in Korea, provided Post-2020 Long-term Mitigation Target and Implementation Plan. The plan consisted of four Business As Usual (BAU) reduction levels by 14.7%, 19.2%, 25.7%, and 31.3% until 2030. The Korean government finalized the mitigation target of 37%. But all the initial alternatives were below the goal, 30% from BAU, that has been promised to the international community as well as set out in the Framework Act on Low Carbon Green Growth. In order to achieve a specific goal, performance management should pursue "Justify doing the right things." Otherwise, performance management would not work properly. According to Kingdon's Policy Stream Framework, abnormal alternatives are difficult to be presented as scenarios because alternative building should focus on the role of the need to adhere to the basic principles and professionals. Such a result is possible only when the policy actors does not balance themselves. Performance management statistics has been analyzed by 6 years CCPI data since 2011, taking into account the impact after enactment. This study also has been complemented by a variety of sources, including the media, documents, and artifacts during the period. As a result, raising awareness about climate change was analyzed as one of the solutions because the climate change issue affects the normal performance management throughout the life of the people to stay linked to the environment.

• 경영과학
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• 제28권2호
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• pp.31-51
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• 2011

Many companies have considered IT outsourcing as one of strategic alternatives in order to rapidly respond to changing business environment and strengthen their competitiveness. Despite its strategic role, however, IT outsourcing project has been plagued by a high failure rate and difficulty in realizing the promised project performance because of its inappropriate risk management. This study examines the effect of IT project management risk factors on project performance. We propose that project risk management factors(communication, technology sharing, and project control) influence project performance(process performance and product performance). Based on the empirical results, theoretical and practical implications of the study are discussed along with its limitations.

• 국제학술발표논문집
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• The 1th International Conference on Construction Engineering and Project Management
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• pp.575-586
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• 2005

This paper presents an approach to quantifying the costs and benefits of integrating ERP systems with project management systems, including potential time and cost savings. To properly identify the costs and the benefits, the paper shows the relevant construction information flows and the desired milestones in the integration process. The proposed benefit analysis model should allow construction firms considering the integration of their ERP systems with legacy systems or commercial project management software make informed decisions in regard to the existing alternatives in the early stages of decision making.

• 상하수도학회지
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• 제19권4호
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• pp.462-472
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• 2005

This study was carried out to suggest the plans for installation of rural sewage treatment facilities through the analysis of these facilities installed in Chungchongnam-do Province. About 5% of all installation was carried out by the department of wastewater and related environment problems and the other case was carried out by the department of construction or residence. In wastewater caused by 250 and 300 persons, facilities capacity do not exceed about $50m^3/d$, caused by 2,500 and 3,000 persons, $500m^3/d$. Advanced sewage treatment process were first needed in the discharge area where affected the water environment greatly. However, in carrying out the water quality pollutant of the total amount management system in the other areas, they should be driven only over the scale of pollutant quota object facilities standard. Rural sewage must be included in the special accounts according to the regulations of local government, and sewage treatment cost should be collected to manage. Installation type uses integrating joint treatment method in case the distance among villages is short or one treatment facility independently.

• 한국수자원학회논문집
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• 제41권1호
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• pp.101-113
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• 2008

본 연구는 안양천 유역의 물순환 건전화를 위한 최종 대안을 제시하기 위해 비용효과분석을 수행하였다. 이중 편익산정은 진술선호기법 중 하나인 실험선택법(Choice Experiments, CE)과 대안의 평가지수(Alternative Evaluation Index, AEI)를 결합하여 수행하였다. 실험선택법은 지역별로 다양한 속성을 보이는 안양천 유역을 잠재적 위험도와 지리적 특성을 바탕으로 6개 지역으로 나누어 설문과 분석을 수행하였다. NB > 0 이상인 대안들은 공학적, 경제적으로 매우 우수한 대안이므로 실행을 적극 검토할 필요가 있다.

• 한국경영과학회지
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• 제29권3호
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• pp.157-169
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• 2004

This paper presents a prescriptive approach to group decision making with group members' imprecise preference information. This includes an alternative method to Salo's inventive approach for identifying group's preferred alternative when attribute weights, consequences, and possibly group members' importance weights are specified in imprecise ways. The imprecise additive group value function can be decomposed into individual group member's imprecise decision making problems, which are finally aggregated to identify group's preferred alternative. The proposed approach is intuitive and easy to implement, and has merits in a couple of points. First. it is possible to view individual group member's inclinations toward conflicting alternatives and the degree of discrepancies to each other. Second, we can observe how much previous decision results of individual decision maker are influenced during interaction since decisions usually are not made at a single step especially in presence of partial preference information. Finally, the individual group member's decision results can be utilized for further investigation of dominance relations among alternatives in a case that interactive questions and responses fail to give a convergent group consensus.

• 한국경영과학회지
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• 제35권4호
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• pp.1-16
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• 2010

In consumption environment, the time interval is frequently found between purchase and consumption. The objective of this study is to determine how consumers' purchase intentions can be influenced by this type of temporal distance. Construal level theory holds that the 'distant future situation' tend to be construed on a higher level than the 'near future situation.' Accordingly, when considering the consumption in the near future, consumers tend to be more likely to focus on the feasibility of the alternatives than on desirability. Conversely, when considering the consumption in the distant future, they are more likely to focus on the desirability of the alternatives than on feasibility. Along with the previous literature, the current study investigates the effects of temporal distance between purchase and consumption on consumer choice. Moreover, we aim to determine under which conditions these effects pertain. To test our hypotheses, we conducted a 2(temporal distance:near future vs. distant future) x 2(alternative type:high desirability, low feasibility vs. low desirability, high feasibility) x 3(additional offering:no gift, free coffee coupon, free mini book) between subjects design. The results show that the main effects of temporal distance and additional offering are significant. The 2 way interaction between temporal distance and additional offerings is also significant. Specifically, the purchase intention differentiation from additional offering tends to be larger at shorter temporal distances (near future) than at long ones (distant future).