• 제목/요약/키워드: Weights of Quality Characteristics

검색결과 170건 처리시간 0.031초

가중치를 적용한 소프트웨어 품질 평가 방법 (A weighted method for evaluating software quality)

  • 정혜정
    • 디지털융복합연구
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    • 제19권8호
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    • pp.249-255
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    • 2021
  • 본 연구는 소프트웨어 시험성적서를 중심으로 국제표준에서 제시하고 있는 8가지 품질특성인 기능성, 신뢰성, 사용성, 유지보수성, 이식성, 효율성, 보안성, 상호운용성에 대한 가중치 결정 문제에 대한 방안을 제시했다. 현재는 소프트웨어 품질 평가에 대한 시험결과는 8가지 품질 특성을 동일한 가중치를 적용해서 산술평균을 구하고 있으나, 소프트웨어 품질 평가 점수는 제품의 특성에 따라 8가지 품질 특성을 구별하여 평가해야 한다는 점을 고려하여 소프트웨어 시험성적서의 결과를 중심으로 텍스트분석을 실시하였다. 텍스트분석을 통해서 나온 결과를 이용해서 8가지 품질 특성별 가중치를 적용하였으며, 두 개의 제품에 대한 시험성적서를 텍스트분석 한 결과를 이용해서 가중치를 적용하여 본 결과 가중치를 적용한 품질특성에 따른 시험성적서의 평균이 더 효율적이라는 것을 확인할 수 있었다.

소프트웨어 수명주기에서 품질특성의 중요도 결정 기법 (A Weight Decision Technique of Quality Characteristics in Software Development Life Cycle)

  • 조재규;이길섭;이승종
    • 정보처리학회논문지D
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    • 제11D권6호
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    • pp.1277-1286
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    • 2004
  • 정보화 사회로 발전이 되면서 고품질 소프트웨어에 대한 관심과 요구가 증대되고 있다. 이에 따라 소프트웨어 제품 품질을 평가 및 관리하는 활동이 개발 활동과 함께 중요시되고 있다. 또한, 소프트웨어는 관련되는 이해당사자 마다 품질을 바라보는 다양한 시각이 존재할 수 있으며, 개발의 각 단계에서 중점적으로 관리되어야 할 품질특성이 필요하게 된다. 이러한 다양한 관점과 수명주기의 특성을 고려한 품질특성의 중요도는 품질관리 활동을 보다 효과적으로 수행할 수 있게 해준다. 그러나 소프트웨어 품질의 중요도에 대한 연구는 그 필요성과 효과성이 제대로 부각되지 않아 많은 연구가 진행되지 않았다. 본 논문에서는 소프트웨어 제품 품질의 기준이 되는 ISO/IEC 9126을 기반으로 소프트웨어 수명주기에서 품질특성의 중요도를 결정하는 기법을 제시하고자 한다. 제안된 기법은 소프트웨어와 관련되는 주요 이해당사자들을 대상으로 한 설문조사와 AHP 기법을 이용한 중요도 분석을 통해 이루어진다. 이를 통하여 수명주기에서 중요도 우선순위에 의하여 품질특성을 선별할 수 있으며, 소프트웨어 품질을 정량적으로 측정하고 개발 완료 후의 소프트웨어의 품질을 예상할 수 있게 하여 고품질의 소프트웨어를 획득할 수 있게 한다.

Carcass Performance, Muscle Fiber, Meat Quality, and Sensory Quality Characteristics of Crossbred Pigs with Different Live Weights

  • Choi, Young Min;Oh, Hee Kyung
    • 한국축산식품학회지
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    • 제36권3호
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    • pp.389-396
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    • 2016
  • In order to attain heavier live weight without impairing pork or sensory quality characteristics, carcass performance, muscle fiber, pork quality, and sensory quality characteristics were compared among the heavy weight (HW, average live weight of 130.5 kg), medium weight (MW, average weight of 111.1 kg), and light weight (LW, average weight of 96.3 kg) pigs at time of slaughter. The loin eye area was 1.47 times greater in the HW group compared to the LW group (64.0 and 43.5 cm2, p<0.001), while carcass percent was similar between the HW and MW groups (p>0.05). This greater performance by the HW group compared to the LW group can be explained by a greater total number (1,436 vs. 1,188, ×103, p<0.001) and larger area (4,452 vs. 3,716 μm2, p<0.001) of muscle fibers. No significant differences were observed in muscle pH45 min, lightness, drip loss, and shear force among the groups (p>0.05), and higher live weights did not influence sensory quality attributes, including tenderness, juiciness, and flavor. Therefore, these findings indicate that increased live weights in this study did not influence the technological and sensory quality characteristics. Moreover, muscles with a higher number of medium or large size fibers tend to exhibit good carcass performance without impairing meat and sensory quality characteristics.

주거환경 구성요소의 상대적 가중치 분석 - 일반인과 전문가 평가의 비교를 중심으로 - (An analysis on the Relative Weights of Residential Environmental Constituents - Comparison of the Dwellers' and Experts' Evaluations -)

  • 강인호;이승미;박인석
    • 한국주거학회논문집
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    • 제20권2호
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    • pp.69-76
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    • 2009
  • The evaluation of the quality of residential environment, in the planning process, is very important. If the environmental quality can be measured on the design scheme itself, it would be possible not only to estimate the residential environment, but also to apply the results of measuring in the planning and design of new residential projects. This study aimed at estimating the relative weights of the constituents of a residential environment by AHP (Analytic Hierarchy Process). For the detailed analysis of relative weights, the respondent of survey were composed of two different groups-dwellers and experts. The findings are as follows (:) 1) the relative weights of residential constituents were different between the respondent groups; 2) the relative weights of residential constituents were different according to socio-demographic characteristics; and 3) for the practical application of estimation results of the relative weights, the relation between residential performance constituents and physical design elements should be considered.

학술지 기사에 대한 메타데이터 품질의 계량화 방법에 관한 연구 (A Study on Quantitative Measurement of Metadata Quality for Journal Articles)

  • 이용구;김병규
    • 정보관리학회지
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    • 제28권1호
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    • pp.309-326
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    • 2011
  • 기존 메타데이터의 품질 측정 방법은 오류가 발생한 레코드를 단순히 계수하여 그 비율로 품질을 측정하였다. 이러한 한계를 극복하기 위해 메타데이터 요소별로 상대적 중요 정도를 나타내는 가중치를 적용함으로서, 메타데이터 품질을 체계적으로 계량화 하는 측정 방법을 제시하고자 하였다. 구체적인 가중치 부여 방법으로 엔트로피, 이용자 과업, 그리고 이용 통계를 활용하였다. 또한 이들을 결합하여 통합 가중치를 제시하고 실제 서비스 되고 있는 학술지 기사 메타데이터에 적용하였다. 실험 결과, 엔트로피 가중치 방법은 데이터 자체의 특성을 잘 반영하며, 이용자 과업을 적용한 방법은 이용자의 정보요구를 해결하는 필요한 메타데이터 요소를 제시하며, 통합 가중치는 특정 메타데이터 요소의 오류에 영향을 받지 않으면서 균형 잡힌 측정값을 제시하여 계량화 방법에 적합한 것으로 나타났다.

오픈퀄리티 품질성과지표(QSC)의 중요도 분석 연구 (A Study on the Relative Importance of Quality Scorecard(QSC) for Open Quality)

  • 송호준;김민규;신완선
    • 품질경영학회지
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    • 제49권1호
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    • pp.61-79
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    • 2021
  • Purpose: The purpose of this study is to study the relative weights of Quality Scorecard (QSC) which was developed for a new quality concept, called Open Quality, in the era of Industry 4.0. Open Quality aims to ensure quality responsibility by accurately measuring the quality level and sharing the quality data with stakeholders. Methods: To analyze the importance of QSC, a survey study was conducted based on 10 types of industry. The relative weights of QSC measures are investigated by both the industry types and the organizational life cycle. Further, the relative importance of QSC was analyzed according to the organization's lifecycle. By dividing the aspects with respect to the result data, application method for QSC is further provided. Results: The result indicates that there are significant differences among Korean companies in terms of the level of Industry revolution stages. Among ten industry types, manufacturing and finance sectors show the highest importance of QSC. QSC measures are also considered more importance in growth stage of the maturity cycle than generator and decline stages. Conclusion: When QSC is adopted for Open Quality, its relative weights must be considered to cope with the unique characteristics of industrial types. Besides, QSC's contribution may vary according to the level of maturity of the target company.

뇌졸중의 효용가중치에 대한 메타분석 (A Meta-Analysis of Utility Weights for Stroke)

  • 허지행;정규혁;이의경
    • 약학회지
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    • 제53권5호
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    • pp.265-273
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    • 2009
  • The aims of this study are to conduct meta-analysis for obtaining pooled estimates of the utility weight for stroke and to explore the study design characteristics that determine the utility weight for stroke. Medline (Pubmed), CEA Registry (Tufts Medical Center), and KERIS (Korea Education & Research Information Service) were searched to find out the literature that reported quality of life with stroke. Patient characteristics, utility weights and standard errors were extracted and stratified by severity, study method, respondent and country. All estimates were measured on a 0 to 1 scale with 0 representing the death and 1 representing the perfect health. The pooled estimates of the utility weight were 0.627 for total stroke, 0.756 for mild stroke, 0.631 for moderate stroke, and 0.389 for severe stroke (p=0.0001). Non-patients showed significantly lower utility weights than patients for severe (p=0.0122) stroke.

전문가 특성별 거주성능 요소의 상대적 가중치 분석 (The Relative Weights of Environmental Constituents According to Experts' Characteristics)

  • 강인호;이승미;박인석
    • 한국주거학회:학술대회논문집
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    • 한국주거학회 2009년 춘계학술발표대회 논문집
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    • pp.288-293
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    • 2009
  • The evaluation of the quality of residential environment may be different according to the experts' characteristics. This study aimed at estimating the relative weights of the constituents of a residential environment by AHP(Analytic Hierarchy Process) through experts' evaluation. The respondent group was composed of 72 experts in the fields of architectural design, housing design, urban design, and urban planning. The findings are as follows(:) 1) the relative weights of residential constituents were different between detailed fields ; 2) the relative weights of residential constituents were not different according to institute in which experts are engaged ; and 3) for the practical application of estimation results of the relative weights, the relation between residential performance constituents and physical design elements should be considered in future.

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현직 교사들이 바라는 중등과학교사의 특성과 사전교사교육과정 (Characteristics of Good Science Teachers and Preservice Teacher Education Curriculum Percevied by Secondary Teachers)

  • 박윤배
    • 한국과학교육학회지
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    • 제12권1호
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    • pp.103-118
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    • 1992
  • Quality control of science teachers seems to be one of the most important tasks to improve the quality of science education in Korea. The purposes of this study, as a survey, were to identify characteristics of good science teachers and to make an outline of preservice teacher education curriculum for cultivating the characteristics from inserivce secondary science teachers. A questionnaire was developed for this study and distributed to 176 inservice teachers. It had three parts: 1) characteristics of good science teachers, 2) weights of preservice curriclum areas, and 3) weights of college courses. The means and standard deviations of teachers' responses were calculated. To test the differences between teacher variables, t-tests were executed. The inservice teachers perceived that the junior-high school teacher's characteristics should be different from the senior-high school teacher's. Characteristics, such as enthusiasm toward teaching or students, subject knowledge, content selection and organizing skill, teaching techniques, and scientific worldview were ranked within top five of good science teacher's chracteristics. The teachers' perception about preservice curriculum were as follows: 1) present weight of liberal arts area should be reduced: 2) weight of content area for junior-high school teachers should be different from that for senior-high school teachers: 3) present weight of pedagogy area should be increased: 4) present weight of science education area should be increased: and 5) many courses in pedagogy and sciencd education areas need to be changed, Based on the data and disussion, a conceptual model for preservice teacher education curriculum was proposed.

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Effects of Duroc Breeding Lines on Carcass Composition and Meat Quality

  • Choi, Jung-Seok;Jin, Sang-Keun;Choi, Yang-Il;Lee, Jae-Joon
    • 한국축산식품학회지
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    • 제35권1호
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    • pp.80-85
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    • 2015
  • This study was performed to investigate the carcass composition and pork quality of Duroc breeding lines in Korea. A total of 200 Duroc pigs were used, and those were originated from four different great-grandparent (GGP) breeding stock farms (L1: N farm, L2: W farm, L3: S farm, L4: R farm). The carcasses of pigs from these farms were collected, and meat quality traits were evaluated. L1 and L2 had smaller carcass weights and thin backfat, whereas L3 and L4 had heavy carcass weights and thick backfat. L3 and L4 had higher contents of fat and protein than L1 and L2. For the meat quality characteristics, L1, L2, and L4 had higher pH values than L3. In addition, L4 had higher water holding capacity than the other lines. L4 had the highest sensory evaluation scores with regard to both juiciness and flavor. Consequently, the study results indicate that pork quality information from domestic Duroc breeding stock lines could be used to effectively improve pork quality in Korea.