• 한국산학기술학회논문지
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• 제16권11호
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• pp.8001-8011
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• 2015

본 연구의 목적은 오가닉 의류제품의 미래의 실소비자들이라 할 수 있는 대학생소비자를 대상으로 오가닉 의류제품의 평가를 위한 품질 속성들을 찾아서 이를 범주화함으로써 평가기준의 근거를 마련하고 각각의 속성들이 대학생 소비자의 인구통계학적 특성에 따라 수행하는 역할에 대하여 살펴보며 대학생 소비자의 품질평가에 따른 향후 구매의도와의 관련성을 알아보고자 하였다. 조사 대상인 대학생들의 오가닉 의류제품에 대한 평가기준 요인으로는 "심미상징성", "관리성", "기능성"의 3요인으로 나타났다. 결과 첫째, 인구통계학적 특성 중 성별, 관련전공, 용돈에서 오가닉 의류제품의 평가기준과 유의한 차이를 보였으며 연령, 거주지역, 가족소득에서는 유의한 차이를 보이지 않았다. 둘째, 대학생 소비자의 오가닉 의류제품 구매경험집단이 오가닉 의류제품의 평가기준인 "심미상징성", "관리성", "기능성"의 모든 요인에 대해 비구매집단보다 더 중요하게 고려하는 것을 알 수 있었다. 셋째, 오가닉 의류제품 평가기준에 따라 향후 구매의도 집단과 구매의도가 없는 집단에 따라 차이가 있는 것을 알 수 있었는데 "관리성", "기능성"은 두 집단 간에 유의한 차이가 있었다.

• 시스템엔지니어링학술지
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• 제8권1호
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• pp.21-28
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• 2012

Development of the system that has required performance is the most important figure and that is the key of project succeed. In order to perform that, systems engineering has come to the fore as a solution. In each step of system engineering process, particularly, requirement analysis and derivation, logical solution, architecture design step are known to affect many of the function and efficiency. Of these, this paper focus on architecture design. We introduce methodology for physical architecture design by applying DSM(Design Structure Matrix) methodology which is based on result of logical solution from MBSE methodology.

• 품질경영학회지
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• 제47권1호
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• pp.163-186
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• 2019

Purpose: The purpose of this study was to present a methodology for assessing the efficiency of supply chain quality management considering characteristics of defense industries to provide academic and policy implications for strengthening quality competitiveness of military supplies. Methods: Using the defense industry's empirical data, conduct an efficiency evaluation by utilizing a multi-stage DEA/Entropy Model for defense industries subject to the quality level survey of military goods manufacturers in 2017. Results: The results of this study are as follows; the first step of the multi-stage DEA model, Quality Management Performance Efficiency Analysis, shows that the CCR model and the BCC model are more efficient than the parent company. the second stage of the multi-stage DEA model showed that the CCR model was slightly more efficient than the parent company and the BCC model was more efficient than the parent.the overall efficiency value of the multistage DEA model, calculated by multipointing the efficiency value of the first stage by the second stage, was more efficient than the parent. Conclusion: The results of this study show that the efficiency of supply chian quality management performance and profitability in the defense industry can be analyzed for the first time using the multistage DEA/Entropy model to identify specific inefficiencies and support objective decision making.

• 정보처리학회논문지D
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• 제16D권1호
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• pp.73-82
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• 2009

오픈소스 소프트웨어는 응용 소프트웨어 개발의 60% 이상을 차지하고 있으나 이를 활용하기 위한 객관적인 품질 모델이나 지표에 대한 연구가 초보적인 수준에 머물고 있으며, 이를 평가하기 위한 정량적인 평가 기법에 대한 연구도 거의 이루어지고 있지 않다. 본 연구는 응용 소프트웨어 개발 및 유지보수에 활용할 수 있는 품질평가 모델을 제시하고, 제시된 품질평가 모델에서 활용할 수 있는 정량적 품질 평가 기법을 제시한다. 제안한 오픈소스 소프트웨어 품질 모델은 문헌 자료를 기반으로 품질 특성을 도출하고, 이를 ISO 9126의 품질 특성과 비교 검토하여 6개의 주특성과 12개의 부특성과 이를 정략적으로 측정할 수 있는 12개의 평가 메트릭으로 구성된 '논리적 오픈소스 소프트웨어 품질 모델'을 제안하였다. 제안한 품질 평가 모델의 효율성을 검증하기 위하여 오픈소스 소프트웨어 커뮤니티에 있는 상위 Rank 5개의 프로젝트 관리 시스템(PMS) 관련 소프트웨어를 대상으로 제안한 품질평가을 적용하여 그 가능성을 입증하였다.

• 한국결정성장학회지
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• 제23권3호
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• pp.119-123
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• 2013

Most of the world's solar cells in photovoltaic industry are currently fabricated using crystalline silicon. Czochralski-grown silicon crystals are more expensive than multicrystalline silicon crystals. The future of solar-grade Czochralski-grown silicon crystals crucially depends on whether it is usable for the mass-production of high-efficiency solar cells or not. It is generally believed that the main obstacle for making solar-grade Czochralski-grown silicon crystals a perfect high-efficiency solar cell material is presently light-induced degradation problem. In this work, the substitution of boron with gallium in p-type silicon single crystal is studied as an alternative to reduce the extent of lifetime degradation. The diamond-wire sawing technology is employed to slice the silicon ingot. In this paper, the quality of the diamond wire-sawn gallium-doped silicon wafers is studied from the chemical, electrical and structural points of view. It is found that the characteristic of gallium-doped silicon wafers including texturing behavior and surface metallic impurities are same as that of conventional boron-doped Czochralski crystals.

• 한국IT서비스학회지
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• 제10권2호
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• pp.177-188
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• 2011

This paper proposes a DEA model for the performance evaluation of each brand of coking coals in an integrated steel mill. The performance is defined as the efficiency which is the ratio of two linear combinations of the output factors to the input factors. There is only one input factor considered in the model : unit price of each brand based on CIF. Five output factors are chosen in consideration of their impact to the quality of cokes such as Ash, VM, LMF, TD, and Rm. Some of the output factors are treated as undesirable in DEA model because the quality criteria are given by the range. The CCR and BCC efficiencies are derived by the DEA model, and the scale efficiency is calculated, too. Each brand of coking coal is classified into four categories according to the CCR and BCC efficiencies, and the most inferior brands are identified as a result. The impact of the input and output factors to the efficiency is analyzed using a multiple regression, then the unit price is revealed as the most critical among them. Also, ANOVA results show that there exist efficiency differences among the coal types and the countries imported, respectively. Finally, the quantitative projection for the inefficient brands is performed if they are to be efficient. The result could be utilized in selecting the good or bad brands of coking coal based on the efficiency in an integrated steel mill. Also, this model will be used to assess the relative efficiency of a new brand of coking coal if it is a candidate to be imported.

• 한국경영과학회지
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• 제28권4호
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• pp.155-189
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• 2003

In this research, the comprehensive evaluation model of IS(information systems) for public sectors is theoretically constructed through reviewing and integrating previous IS evaluation-related research. This model is hypothesized to consist of five sectors(System Sector, User Sector, Organization and Management Sector, Resource Management Sector and Strategic Contribution Sector), ten evaluation items belonging to these five evaluation sectors, and sixty two evaluation indices for these ten evaluation items. The results of empirical analyses to test the validity of the research model show that the evaluation sectors turn out to be the same ones as proposed in the hypothetical model. The evaluation items(System Quality, Information Quality, Service Quality) in System Sector proves to be consistent with the hypothetical model. However, in case of User Sector, two evaluation items(Perceived Usefulness and User Satisfaction) which are included in the hypothetical model are found to be merged into one item(User Satisfaction). And, it is shown that four evaluation items such as the Efficiency of Internal Process, Customer Satisfaction, Organizational Innovation, and the Degree of Informatization competence improvement are included in Organization and Management Sector, differently from the research model in which the items, Organizational innovation and the Degree of Informatization competence improvement, are not divided. As a final result, sixty two evaluation indices that comprise all the evaluation items belonging to five sectors are found to be reduced to fifty seven ones through factor analyses, criterion-related validity tests and reliability analyses.

• 인터넷정보학회논문지
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• 제8권6호
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• pp.115-125
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• 2007

게임 소프트웨어는 국내외적으로 상당히 인기가 높아지면서 시장 가치가 높아지고 있다. 그러므로 게임 소프트웨어의 평가 모델을 연구하는 것은 상당히 중요하다. 소프트웨어 품질 평가의 대표적인 국제 표준 모델은 ISO/IEC 9126이라고 보여진다. 특히 게임 소프트웨어는 사용자와 개발자에 있어서 소프트웨어 품질이 상당히 중요하므로 국제 표준 모델을 준수한 평가 모델이 필요하다. 이 연구에서는 게임 소프트웨어의 품질을 객관적이고 정량적으로 평가하기 위해서 소프트웨어 품질평가 메트릭을 제시하였다. ISO/IEC 9126의 소프트웨어 품질 평가 국제 표준 문서를 기반으로 기능성, 신뢰성, 사용성, 효율성, 이식성, 유지보수성의 6가지 품질 특성이란 관점에서 게임 소프트웨어의 품질 평가 모델을 제시했다.

• 산업기술연구
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• 제32권A호
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• pp.57-64
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• 2012

In order to examine the tailorability of advanced sewage treatment of a separated sewer pipe, we observed the quality of leaked water in a reactor. A2C affiliation and MBR affiliation decreased by over 78% in cases of BOD, COD, and SS. SBR affiliation decreased by 79.1% in a case of T-N. Overall, the efficiency of T-N on the above affiliations was low. SS had the high efficiency in MBR affiliation. In the end, examination of water quality improvement showed that the quality was improved from 20% to 90%; hence, it is expected that this treatment can protect the water resources of the Hongcheon River and makes it easier to use the water of the river.

• 한국시뮬레이션학회:학술대회논문집
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• 한국시뮬레이션학회 1998년도 The Korea Society for Simulation 98 춘계학술대회 논문집
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• pp.27-31
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• 1998

The growing usage of multimedia communication applications with specific bandwidth and real-time delivery requirements has created the needs for quality of service(QoS). In response to the growing demand for an integrated services, the Reservation Protocol(RSVP) has been designed to exchange resource reservation among routers in the internet. RSVP protocol provides the quality of service for real-time applications but the network efficiency is reduced because of the limited bandwidth. In order to use network resources efficiently. We compare the resource efficiency of traditional reservation methods with that of the proposed method and evaluate the performance of the internet phone.