• 제목/요약/키워드: Multi-variate Data Analysis

검색결과 72건 처리시간 0.026초

6개월 금연 성공의 영향 요인 연구 - 인천광역시 보건소 금연클리닉을 방문한 흡연자를 중심으로 - (Factors Associated with Success of Smoking Cessation during 6 Months)

  • 이군자;장춘자;김명순;이명희;조영희
    • 대한간호학회지
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    • 제36권5호
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    • pp.742-750
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    • 2006
  • Purpose: This study was to identify which factors are likely to influence the effectiveness of smoking cessation on adults who smoke in Metropolitan Incheon. Method: Data from 9,083 smokers, who visited a smoking cessation clinic of a public health center from Jan. to Oct. 2005, were provided by the Korean Health Research Society, Among 9,083 smokers, 1,495 people were selected for follow up care at 6 months in order to analyze the differences between two groups one is a successful group and the other is a failure group. Results: The successful group included 639 people and the failure group 856 people. In the demographic profiles such as sex, age and motive registration, there was a significant difference between the two groups. In the view of smoking pattern and factors such as the expiratory CO level, the age of starting to smoke, the duration of smoking, alcohol, and dependence on alcohol use and nicotine, there were significant differences between the two groups. The smoking cessation method, results of uni variate analysis, the total number of visits to the smoking cessation clinics, and the use of nicotine gum or a patch(stage 1, stage 2) were significantly different in the two groups. Conclusion: The results of multi variate analysis have shown that the factors associated with the success for smoking cessation is the total number of visits to the smoking cessation clinic, and the dependence on alcohol.

이동전화 서비스의 고객 만족도와 서비스 품질에 관한 연구 (An Empirical Study on Customer Satisfaction and Service Quality in Mobile Telecommunications Service)

  • 이승규;라준영
    • 한국경영과학회:학술대회논문집
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    • 한국경영과학회 2000년도 추계학술대회 및 정기총회
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    • pp.310-313
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    • 2000
  • This paper develops a model of customer satisfaction in the mobile telecommunication services. We examine the relationships among customers'overall satisfaction and underlying dimensions; perceived service quality, service value, and brand image. Variables related to customer satisfaction and dissatisfaction are derived from customer critical incidence survey. The model is estimated with multi-variate data analysis. Results indicate that the (1) technical service quality is the main driver of customer overall satisfaction, (2) some peripheral services are rapidly evolving into the core services of mobile telecommunications, and (3) the current policy of service providers does not focus on customer satisfaction but on establishing churning barrier by increasing switching costs.

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패턴인식을 이용한 고장력강의 용접 구조건전성 평가에 대한 음향방출 사례연구: 인장시험을 중심으로 (Acoustic Emission Studies on the Structural Integrity Test of Welded High Strength Steel using Pattern Recognition: Focused on Tensile Test)

  • 김길동;이장규
    • 대한안전경영과학회지
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    • 제10권4호
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    • pp.127-134
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    • 2008
  • The objective of this study is to evaluate the mechanical behaviors and structural integrity of the weldment of high strength steel by using an acoustic emission (AE) techniques. Monotonic simple tension and AE tests were conducted against the 3 kinds of welded specimen. In order to analysis the effectiveness of weldability, joinability and structural integrity, we used K-means clustering method as a unsupervised learning pattern recognition algorithm for obtained multi-variate AE main data sets, such as AE counts, energy, amplitude, hits, risetime, duration, counts to peak and rms signals. Through the experimental results, the effectiveness of the proposed method is discussed.

구조적.관계적 사회적자본이 혁신문화와 행위에 미치는 영향: 중소기업사례를 중심으로 (The Influence of Structural and Relational Social Capital on Innovative Culture and Behaviour in SMEs)

  • 이종무
    • 디지털산업정보학회논문지
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    • 제9권4호
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    • pp.227-238
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    • 2013
  • Although several studies show close relationships between social capitals and their performances, a little is known about specific social capitals and their effects on organizational culture and behaviour leading to their innovative outcomes within small and medium sized enterprises(: SMEs). This study examines some dimensions of social capitals and their influences on creating innovative culture and employees' behaviour. The importance of these are regarded as an imperative for SMEs to overcome the inequality of financial leverage and competitive power over resources. For the empirical analysis, survey data were collected from 51 domestic SMEs and analyzed by partial least squares(: PLS) that is one of popular structural modeling and multi-variate projection techniques to latent variables. The findings confirm a positive support of social capitals and their influences on the innovative culture and bahaviour. This result implies that managing the capability of social capitals is important for SMEs to develop the innovative culture and bahaviour and create a competitive advantage.

저자동시 인용분석에 의한 1990년대 한국문헌정보학의 지적구조에 관한 연구 (Intellectual Structure of Korean Library and Information Science in 1990s Using Author Co-citation Analysis)

  • 윤구호;서말숙
    • 한국도서관정보학회지
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    • 제32권3호
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    • pp.169-197
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    • 2001
  • 학문의 연구동향 및 연구변화가 문헌의 서지적 현상 속에 숨겨져 있을 것이라는 가설아래, 1990년대의 한국문헌정보학의 지적구조 및 변화를 저자동시인용분석을 통하여 규명해 보았다. 3개 학회지(한국 문헌정보학회지, 정보관리학회지, 한국도서관 정보학회지)의 10년분을 통해 선정된 50명의 저자를 대상으로 다차원축척기법에 의한 저자간의 상관관계, 군집분석에 의한 저자군집, 요인분석에 의한 하위주제영역, 교차분석에 의한 전체주제영역 및 하위주제영역의 변화추이 등을 구체적으로 분석하였다.

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여고생의 자아정체감 형성에 영향을 미치는 요인 (A Study on the Factors Influencing Ego-identity Formation of Female High School Students)

  • 남현아;조은영
    • 한국학교보건학회지
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    • 제29권2호
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    • pp.107-115
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    • 2016
  • Purpose: This study is a descriptive survey which attempts to understand family strength, parenting attitude, and the ego-identity perceived by female high school students and identify the factors influencing ego-identity of the students. Methods: Data collection was carried out through a questionnaire survey of 186 female high school students. The collected data were analyzed by descriptive statistics, t-test. ANOVA, correlation analysis, and multi-variate regression analysis while using SPSS 23.0 program. Results: Family strength and the ego-identity perceived by female high school students were at a mid-level, with an average of 207.76 and 149.72 points, respectively. Parenting attitude showed scores higher than the mid-level, recording 90.36 points in average. As a result of analyzing the correlation between the factors, the higher family strength and the ego-identity of female high school students were, the better were the patenting attitudes of perceived parents. Besides, family health, parenting attitude, and family form (nuclear family) were found to be the factors influencing ego-identity formation of female high school students with the explanatory power being 25.5% in total. Conclusion: Developing intervention programs which take into account family strength is considered necessary to help the youth form positive ego- identity.

Determination of Adulteration of Chicken Meat into Minced Beef Mixtures using Front Face Fluorescence Spectroscopy Coupled with Chemometric

  • Saleem, Asima;Sahar, Amna;Pasha, Imran;Shahid, Muhammad
    • 한국축산식품학회지
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    • 제42권4호
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    • pp.672-688
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    • 2022
  • The objective of this study was to explore the potential of front face fluorescence spectroscopy (FFFS) as rapid, non-destructive and inclusive technique along with multi-variate analysis for predicting meat adulteration. For this purpose (FFFS) was used to discriminate pure minced beef meat and adulterated minced beef meat containing (1%, 2%, 3%, 4%, 5%, 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, and 100%) of chicken meat as an adulterant in uncooked beef meat samples. Fixed excitation (290 nm, 322 nm, and 340 nm) and fixed emission (410 nm) wavelengths were used for performing analysis. Fluorescence spectra were acquired from pure and adulterated meat samples to differentiate pure and binary mixtures of meat samples. Principle component analysis, partial least square regression and hierarchical cluster analysis were used as chemometric tools to find out the information from spectral data. These chemometric tools predict adulteration in minced beef meat up to 10% chicken meat but are not good in distinguishing adulteration level from 1% to 5%. The results of this research provide baseline for future work for generating spectral libraries using larger datasets for on-line detection of meat authenticity by using fluorescence spectroscopy.

AFLP 분석을 통한 Curcuma속 수집종간 유전적 다양성 분석 (Genetic Diversity of Curcuma Genus Collected Germplasm using Analysis of AFLP)

  • 문병철;김욱진;지윤의;이영미;김호경
    • 한국약용작물학회지
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    • 제21권6호
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    • pp.455-460
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    • 2013
  • Collected germplasms of five representative species belonging to Curcuma genus (C. longa, C. aromatica, C. zedoaria, C. phaeocaulis and C. kwangsiensis) were 52 samples from different farmhouse in Korea and China. To elucidate the genetic diversity among the species, 52 samples were analyzed by genomic fingerprinting method using amplified fragment length polymorphism (AFLP). AFLP results of 6 primer combinations were revealed 643 total DNA fragments and 349 polymorphic bands with the 54.3% ratio of polymorphism. In the analysis of coefficient similarity using unweight pair group method with arithmetic averages (UPGMA), 52 Curcuma germplasm lines were ranged from 0.60 to 0.99 and clustered distinct five groups according to the species and collected geographical levels. However, the result of principal coordinate analysis (PCA) by multi-variate analysis was shown significantly greater differences among species than geographical origins based on AFLP profiling data of these samples.

사례관리자의 직무스트레스에 영향을 미치는 요인 (The Affective Factors of Case Managers' Occupational Stress)

  • 최영순;김현리;성경자
    • 한국직업건강간호학회지
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    • 제18권2호
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    • pp.205-218
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    • 2009
  • Purpose: The purpose of this study was to learn the affective factors of case managers' occupational stress. Method: A total of 986 participants responded to a self-administered questionnaire that included 24 items of Korean Occupational Stress Questionnaire Short Form (KOSQSF), job satisfaction index, health behaviors, general characteristics, and variables related to work. The data collection of research was done from 17th to 21th of September, 2007. The data were analysed by t-test, ANOVA, and multiple regression with SPSS 11.1 package program. Result: The results of this study were as follows: The overall job satisfaction rate of men and women was highly than that of the Korean worker's standard. There were statistically significant differences in occupational stress in work place, work department, work position, smoking, treatment in out-patient clinic, subjective & relative health-status, work load, supervisor's review on work-ability, and job satisfaction. According to the multi-variate analysis, occupational stress(47.6%) was related to job satisfaction, workload, individual work-ability, supervisor's review on work-ability, health status and gender. Conclusion: Occupational stress varied depending on the ten variables and was influenced by job satisfaction(35.7%) and 5 other variables. The results suggest that further follow-up study on case managers is necessary to relieve their occupational stress.

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국내 벤처기업의 업령(業齡)에 따른 성과 결정요인 (An Empirical Study on the Business Performance Determinants According to Years of Operation in Domestic New Ventures)

  • 이상천;고봉상;용세중
    • 산업공학
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    • 제17권spc호
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    • pp.11-19
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    • 2004
  • The purpose of this study is to identify the determinants of new venture performance according to years of operation in the view of integrated research framework. We propose the integrated new ventures performance model which is composed of entrepreneur, organization/resources, industrial environment, strategy/foundation process and availability of supporting systems as corresponding variables to new ventures performance. The determinants of new venture performance according to years of operation are identified through the multi-variate statistical analysis such as moderating regression analysis with the data gathered from 110 executives of venture companies. For internal variables, entrepreneur's managerial ability and technical expertise and employee's ability affect venture's performance increasingly as years of operation increases but resource procurement ability affects decreasingly. Related to external variables, years of operation plays positive moderating role on market size growth and supporting system availability, but negative role on government venture policy for venture performances. Though this study has limitation of small sample, limited questionnaire and performance measure, it has managerial contribution of identifying determinants of new venture performance according to years of operation.