• 제목/요약/키워드: Data-Oriented

검색결과 3,078건 처리시간 0.028초

클러스터링을 고려한 다차원척도법의 개선: 군집 지향 척도법 (Improved Multidimensional Scaling Techniques Considering Cluster Analysis: Cluster-oriented Scaling)

  • 이재윤
    • 정보관리학회지
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    • 제29권2호
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    • pp.45-70
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    • 2012
  • 개체들 사이의 관계를 저차원 공간에 매핑하는 다차원척도법을 수행하기 위한 다양한 방법과 알고리즘이 개발되어왔다. 그러나 PROXSCAL이나 ALSCAL과 같은 기존의 기법들은 50개 이상의 개체를 포함하는 데이터 집합을 대상으로 개체 간의 관계와 군집 구조를 시각화하는데 있어서 효과적이지 못한 것으로 나타났다. 이 연구에서 제안하는 군집 지향 척도법 CLUSCAL(CLUster-oriented SCALing)은 기존 방법과 달리 입력되는 데이터의 군집 구조를 고려하도록 고안되었다. 50명의 저자동시인용 데이터와 85개 단어의 동시출현 데이터에 대해서 적용해본 결과 제안한 CLUSCAL 기법은 군집 구조를 잘 식별할 수 있는 MDS 지도를 생성하는 유용한 기법임이 확인되었다.

친환경행위가 월경곤란증에 미치는 영향 (Impact of Pro-environmental Behavior on Dysmenorrhea)

  • 김현경
    • 대한간호학회지
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    • 제41권2호
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    • pp.236-244
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    • 2011
  • Purpose: In this study the impact of pro-environmental behavior, well-being oriented behavior, and use of cloth menstrual pads on dysmenorrhea in Korean female adults was examined according to the theory of reasoned action. Methods: A cross-sectional study was conducted with 195 Korean female adults. Data were collected from June to August, 2010 using self-report questionnaires. Data were analyzed using t-test, one-way ANOVA, Pearson correlation coefficients, multiple regression, and logit regression with STATA 10.0. Results: Pro-environmental behavior explained 48% of well-being oriented behavior. Well-being oriented behavior explained 10% of cloth pad use. Use of cloth pad explained 4% of dysmenorrhea and 5% of menstrual pain. The path through well-being oriented behavior had a significant effect from pro-environmental behavior to cloth pad use. Conclusion: Use of cloth pad was significantly related with well-being oriented behavior, pro-environmental behavior, social influence, dysmenorrhea, and menstrual pain. The results of this study suggest that pro-environmental strategies can help health care providers diminish clients' menstrual symptoms. Nursing intervention can support pro-environmental behavioral strategies.

C++ for CAD/CAM applications

  • Hwang, Il-Kyu;Park, Bum-Joo;Kim, Deok-Soo
    • 한국경영과학회:학술대회논문집
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    • 대한산업공학회/한국경영과학회 1994년도 춘계공동학술대회논문집; 창원대학교; 08월 09일 Apr. 1994
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    • pp.58-66
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    • 1994
  • The philosophy of object-oriented has found its role in various applications such as programming languages, databases, distributed systems, etc. Discussed in this paper is an experience of the object-oriented programming technique obtained while developing a particular CAD/CAM system. It has been well-known that the object-oriented programming language has good features enabling the improved reusability and extensibility of an existing code. The features include data abstraction, encapsulation, inheritance, polymorphism, and so on. This paper presents how these features of the object-oriented programming language, C++ in particular, can be applied to the implementation of geometric algorithms as well as graphical user interfaces.

중국 대련 남자대학생의 패션행동분석 (An Analysis of Fashion Behavior of Male College Students in Dalian, China)

  • 김정원;사일
    • 한국의류산업학회지
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    • 제11권1호
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    • pp.93-102
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    • 2009
  • The purpose of this study was to analyze the factor of fashion behavior and to identify fashion behavior differences according to demorgraphic/physical characteristics and parents' background of male college student in Dalian, China. The data were collected via a self-administered questionnaire from 250 male college students living in Dalian, China in June 2007. Data analysis method were used to Crombach's a, reliabilty, factor analysis, frequency analysis, ANOVA, and Sheffe's test for the post hoctest. The results of this study were as follows: Fashion behavior factors were analyzed into 6 factors such as fashion satisfaction oriented, high price oriented, fashion leader oriented, practical fashion oriented, others defendence oriented. There were significant difference in demographic variables such as age, major and physical variables such as height, weight, clothing size and parents' background such as education, job, and income.

비방향 DEA 게임 교차효율성을 이용한 공급업체 선정방법 (A Non-Oriented DEA Game Cross Efficiency Model for Supplier Selection)

  • 임성묵
    • 산업경영시스템학회지
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    • 제38권2호
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    • pp.108-119
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    • 2015
  • This study intends to propose a non-oriented DEA based game cross-efficiency approach for supplier selection. With a discussion on the choice of DEA models and approaches that are most appropriate for supplier selection, we propose a game cross efficiency model based upon the non-oriented variable returns-to-scale RAM DEA by adapting the existing game cross efficiency model based upon the oriented constant returns-to-scale CCR DEA. We develop the RAM game cross efficiency model and a convergent iterative solution procedure to find the best game cross efficiency scores that constitute a Nash equilibrium. We illustrate the proposed model with two data sets of supplier selection, and demonstrate that significantly different results are obtained when compared with the existing approaches.

A Column-Aware Index Management Using Flash Memory for Read-Intensive Databases

  • Byun, Si-Woo;Jang, Seok-Woo
    • Journal of Information Processing Systems
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    • 제11권3호
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    • pp.389-405
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    • 2015
  • Most traditional database systems exploit a record-oriented model where the attributes of a record are placed contiguously in a hard disk to achieve high performance writes. However, for read-mostly data warehouse systems, the column-oriented database has become a proper model because of its superior read performance. Today, flash memory is largely recognized as the preferred storage media for high-speed database systems. In this paper, we introduce a column-oriented database model based on flash memory and then propose a new column-aware flash indexing scheme for the high-speed column-oriented data warehouse systems. Our index management scheme, which uses an enhanced $B^+$-Tree, achieves superior search performance by indexing an embedded segment and packing an unused space in internal and leaf nodes. Based on the performance results of two test databases, we concluded that the column-aware flash index management outperforms the traditional scheme in the respect of the mixed operation throughput and its response time.

대학생의 소비가치 유형에 따른 패션제품 구매행동 (Fashion Product Purchasing Behavior according to College Students' Consumption Value Typology)

  • 박은희;구양숙
    • 한국생활과학회지
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    • 제17권4호
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    • pp.759-769
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    • 2008
  • The purpose of this study was to classify consumption value and analyze the relationship between consumption value typology and fashion product purchasing behavior of college students as consumers. Data were gathered by surveying college students living in Daegu and Kyungbook area using convenient sampling, and 513 questionnaires were used in the statistical analysis. Data were analyzed by frequency, factor analysis, cluster analysis, ANOVA, Duncan-test, Chi-square, and t-test. The findings are as follows. According to the consumption value typologies of college students were classified into three groups such as Social Value oriented, Functional Value oriented, and Differentiated Individuality oriented group. The Social Value oriented group and the Differentiated Individuality oriented group were more conscious of clothing pursuit propensities behavior such as brand, shopping place, and price than Functional Value oriented group. The Functional Value oriented group showed the lowest interest in brand name. Purchasing behavior of casual wear and bags fashion product had the significant effects on the shopping place, and price.

성격유형별 의복 라이프스타일과 의복구매행동 (Clothing Life-Style and Clothing Buying Behavior on Personality Types)

  • 권보애;오현정
    • 한국의류학회지
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    • 제28권7호
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    • pp.927-938
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    • 2004
  • The purposes of this study were to find the difference of clothing life-style and to examine clothing buying behaviors on personality types. Personality types were identified using Myers-Briggs Type indicator(MBTI). The data were collected from 360 female adults using a questionnaire to clothing lifestyle and clothing buying behavior. The data were analysed with factor analysis, one- way ANOVA and Duncan's multiple range test. Results are summarized as follows: First, 'Fashion-oriented', 'self-regulate-oriented', 'activity-oriented', 'economic-oriented', 'social-oriented', 'leisure-oriented' and 'conservationoriented' clothing life-style had a significant difference of psychological types. Second, Extroverted(E) or Sensation(S) or Feeling(F) types regarded significantly higher in 'VMD', 'store atmosphere', 'famous brand name and store name' as criteria for store selection than combination types(IN, IT, NT) of Introverted(Ⅰ), iNtuition(N), Thinking(T). Third, Sensation Judgement types(SJs) of a patron temperament preferred a 'plan-oriented' life-style and considered 'famous brand name and store name' important. Sensation Perceiving types(SPs) of an artist temperament had an 'unplanned' clothing life-style and a significantly higher impulsive buying orientation than SJs.

간호사가 지각한 간호조직문화와 행복지수가 이직의도에 미치는 영향 (The Effect Nursing Organizational Culture and Happiness Index on Turnover Intention among Nurses)

  • 김경남
    • 보건의료산업학회지
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    • 제8권2호
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    • pp.61-72
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    • 2014
  • The purpose of this study was to identify the effect nursing organizational culture and happiness index on turnover intention among nurses. The subjects of this study were 377 nurses who were working at 3 general hospitals in B city. The data were collected by structured questionnaire from July 1 to August 28 of 2013. The data collected were analyzed with SPSS Win 20.0 using descriptive methods, t-test, ANOVA, Pearson correlation coefficient and Stepwise multiple regression. Turnover intention were significant negative correlation for affiliative oriented organizational culture(r=-.137, p=.008), happiness index(r=-.290, p<.001). There were significant positive correlation for innovative oriented organizational culture(r=.123, p=.017), rank oriented organizational culture(r=.126, p=.015), task oriented organizational culture(r=.218, p<.001). Factors affecting for turnover intention were happiness index(${\beta}$=-.297, p<.001), rank oriented organizational culture(${\beta}$=.266, p<.001), nursing experience(${\beta}$=.199, p=.009), affiliative oriented organizational culture(${\beta}$=-.142, p=.034). The explained variances for were turnover intention among nurses 17.2%. Based on the study consider to development and education program of happiness index and affiliative oriented organizational culture for nurses in the hospital setting.

의복추구혜택에 따른 중.노년기 여성 세분시장의 구매기준 및 패션정보원 비교분석 (Comparison of the Purchase Criteria and Fashion Information Sources for the Middle-aged and Elderly Women's Fashion Markets Segmented Based on Benefits Sought)

  • 이진화;김칠순
    • 대한가정학회지
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    • 제45권5호
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    • pp.39-49
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    • 2007
  • The purpose of this study was 1) to segment the middle-aged and elderly women's fashion market based on the clothing benefits sought by the buyer and 2) to compare the purchase criteria and fashion information sources among the segmented markets. The data were collected using a self-administered questionnaire in Seoul and its surrounding suburban areas. Factor analysis, ANOVA, Duncan test, and Dunnett's T3 tests were used to conduct the data analysis from 285 out of 300 questionnaires. The middle-aged and elderly women's fashion market was segmented into four groups; value-oriented, social status/trend-oriented, uniqueness-oriented, and protection/ convenience-oriented. All four groups were significantly different in terms of purchase criteria and fashion information sources. The social status/trend-oriented group used external purchase criteria, such as country of origin or brand and obtained fashion information from personal experience, advice from the salesperson, and celebrities. The protection/convenience-oriented group sourced fashion information from newspapers, the internet, and the radio. The uniqueness-oriented group put less importance on practical use/convenience criteria. Marketing strategies for these segmented markets were discussed.