• 제목/요약/키워드: Sample selection model

검색결과 198건 처리시간 0.021초

블록체인 기반 공급망관리 정보시스템으로의 전환의도에 영향을 미치는 요인 (The Effect on the Switching Intention to the Blockchain-based Supply Chain Management Information System)

  • 오경상;이동명
    • 산업융합연구
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    • 제20권12호
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    • pp.11-25
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    • 2022
  • 본 연구에서는 블록체인이 적용된 공급망관리 정보시스템으로 전환의도에 영향을 미치는 요인을 검증하고자한다. 이를 위해 선행연구의 고찰을 통해 변수 선정 및 연구모형을 구성하고, TOE 프레임워크와 PPM 모델을 활용해 실증분석을 시행하였다. Push 요인, Pull 요인이 블록체인 시스템 전환의도에 미치는 영향 및 Mooring 요인인 전환비용을 통한 조절효과를 검증하였다. 국내에 소재한 중소기업을 대상으로 설문을 하여 320개 응답 자료를 표본으로 구조방정식 모형을 사용해 가설을 검증하였다. 연구 결과 Push 요인인 사회적 영향과 Pull 요인인 경영진의 혁신의지가 전환의도에 유의미한 영향을 미쳤다. 그리고 전환비용 인식 수준이 높고 낮은 집단 간 조절효과를 확인하였다. 본 연구는 블록체인 기반 공급망관리 정보시스템의 구현을 통한 기업의 경쟁력을 제고시킬 수 있는 SCBM(supply chain & blockchain management)의 개념 및 연구 방향을 제시하였다는 점에 의의가 있다.

Impact of Vocational Training on Wages of Ethnic Minority Labors in Vietnam

  • DO, Ha Thi Hai;MAI, Cuong Ngoc;MAI, Anh Ngoc;NGUYEN, Nui Dang;PHAM, Toan Ngoc;LE, Huong Thi Thu;TRAN, Manh Dung;VU, Tri Tuan
    • The Journal of Asian Finance, Economics and Business
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    • 제7권6호
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    • pp.551-560
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    • 2020
  • This research investigates the impact of vocational training on wages of ethnic minority labors in emerging countries; Vietnam is the case study. The study uses secondary data from 2014 to 2018 collected through Vietnam Household Living Standards Surveys (VHLSS) conducted by the General Statistics Office. In order to analyze the impact of vocational training on wages of ethnic minority areas in Vietnam, this research creates ethnic area variables. According to Vietnamese regulations, ethnic areas are communes of 51 different provinces, inhabited by ethnic minority people. The statistics from VHLSS in 2018, show that the proportion of labors of working age with a certificate was 22.5%. The research employs Heckman Sample Selection Model to estimate the impact of vocation training on wage of labors in ethnic minority areas. The results show that vocational training plays a crucial role in improving the wages of ethnic minorities and has a positive impact. However, apart from the achieved outcomes, vocational training and job creation for ethnic minorities are not without limitations and shortcomings. Based on the findings, some recommendations to ethnic minority labors, enterprises and the Government are proposed to encourage participation in vocational training for the purpose of promoting the efficiency of the labor market.

조직의 인적자원 학습 및 성장성과, 재무적 성과와 경영성과 간의 관계에 관한 연구 (Learning & Growth Performance, Financial Performance, and General Performance)

  • 장충석
    • 산학경영연구
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    • 제21권2호
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    • pp.111-136
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    • 2008
  • 균형성과표(BSC) 모형은 기업의 경영성과를 비재무적 지표로서 학습 및 성장성과, 내부 경영프로세스 성과, 고객성과, 재무적 지표로서 재무적 성과를 중심으로 측정하고 평가하는 통합적 성과 측정 시스템이다. 이러한 균형성과표(BSC) 모형은 재무적 성과 지표를 중심으로 기업의 경영성과를 측정하고 평가하는데 있어서 나타나는 한계를 보완하고 종합적으로 측정하고 평가함으로써 합리적인 기업의 성과를 예측하고 측정하는 평가시스템이다. 본 연구에서는 기업이 균형성과표(BSC) 모형을 도입하여 활용하는 경우 도입전과 후의 성과에서 유의미한 차이가 있는지를 구명하고, 비재무적 성과 지표와 재무적 성과 지표, 그리고 전반적인 경영성과 간의 영향관계를 분석하였다. 분석결과 균형성과표(BSC) 모형을 도입하여 활용하는 경우 기업의 학습 및 성장성과에 유의미한 차이가 분석되었으며, 비재무적 성과 지표들은 재무적 성과를 개선하여 전반적인 기업의 경영성과를 향상시키는 것으로 분석되었다.

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인터넷 및 TV 홈쇼핑 채널 간의 소비자 선호 결정 요인 (An analysis of consumer choice between the Internet and TV home shopping channels)

  • 이광훈
    • 한국유통학회지:유통연구
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    • 제12권4호
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    • pp.27-47
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    • 2007
  • 본 논문은 오프라인 쇼핑을 대체하는 새로운 유통 채널로서 뚜렷한 비중을 차지하고 있는 인터넷 및 TV 홈쇼핑에 대한 소비자들의 선택 결정 요인을 표본선택오차 문제를 고려한 헥킷 모형을 이용하여 분석하였다. 그 결과 연령이 낮을수록, 그리고 인터넷 경력, 인터넷 이용 시간, 보유 컴퓨터의 수 등에 있어서 인터넷 쇼핑 채널의 이용에 유리한 환경에 있을수록 인터넷 쇼핑에 대한 상대적 구매비중으로 측정한 인터넷 쇼핑에 대한 선호도가 높게 나타나고 있다. 반면에 성별이나 기혼여부 등 다른 인구통계학적 특성은 채널 간 구매비중에 유의한 영향을 미치고 있지 못하며, TV 시청시간이나 케이블 TV 서비스 타입 등 TV 홈쇼핑 이용 환경과 관련된 변수들 역시 별다른 유의한 영향을 미치지 못하는 것으로 나타났다. 또한 거래비용 절감의 유인이 큰 쇼핑빈도가 높은 구매자들일 수록 인터넷 쇼핑 채널을 TV홈쇼핑에 비해 상대적으로 많이 이용하는 것으로 나타났다. 채널 별 특성과 관련해서는 인터넷 쇼핑 채널이 TV 홈쇼핑 채널에 비해 편리하고, 신뢰할만하며, 신속하고, 다양하다는 구매자들의 인식이 인터넷 쇼핑 채널의 상대적 구매비중에 긍정적 영향을 주는 것으로 나타나고 있다. 반면에 인터넷 및 TV 홈쇼핑 유통 채널간의 가격 수준에 대한 인식은 이러한 상대적 구매비중에 별 다른 유의한 영향을 미치지 않는 것으로 나타났다.

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New Galaxy Catalog of the Virgo Cluster

  • Kim, Suk;Rey, Soo-Chang;Jerjen, Helmut;Lisker, Thorsten;Sung, Eon-Chang;Lee, Youngdae;Chung, Jiwon;Pak, Mina;Yi, Wonhyeong;Lee, Woong
    • 천문학회보
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    • 제39권2호
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    • pp.50-50
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    • 2014
  • We present a new catalog of galaxies in the wider region of the Virgo cluster, based on the Sloan Digital Sky Survey (SDSS) Data Release 7. The Extended Virgo Cluster Catalog (EVCC) covers an area of 725 deg2 or 60.1 Mpc2. It is 5.2 times larger than the footprint of the classical Virgo Cluster Catalog (VCC) and reaches out to 3.5 times the virial radius of the Virgo cluster. We selected 1324 spectroscopically targeted galaxies with radial velocities less than 3000 km s-1. In addition, 265 galaxies that have been missed in the SDSS spectroscopic survey but have available redshifts in the NASA Extragalactic Database are also included. Our selection process secured a total of 1589 galaxies of which 676 galaxies are not included in the VCC. The certain and possible cluster members are defined by means of redshift comparison with a cluster infall model. We employed two independent and complementary galaxy classification schemes: the traditional morphological classification based on the visual inspection of optical images and a characterization of galaxies from their spectroscopic features. SDSS u, g, r, i, and z passband photometry of all EVCC galaxies was performed using Source Extractor. We compare the EVCC galaxies with the VCC in terms of morphology, spatial distribution, and luminosity function. The EVCC defines a comprehensive galaxy sample covering a wider range in galaxy density that is significantly different from the inner region of the Virgo cluster. It will be the foundation for forthcoming galaxy evolution studies in the extended Virgo cluster region, complementing ongoing and planned Virgo cluster surveys at various wavelengths.

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Health Beliefs of Nursing Faculty Students about Breast Cancer and Self Breast Examination

  • Ardahan, Melek;Dinc, Hulya;Yaman, Askin;Aykir, Emrah;Aslan, Baver
    • Asian Pacific Journal of Cancer Prevention
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    • 제16권17호
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    • pp.7731-7736
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    • 2015
  • Background: Breast cancer usually shows a slow development rate and when it is recognized in early stages very successful treatment results can be achieved. This research was planned to research the health beliefs of nursing faculty students about breast cancer and breast self-examination (BSE). Materials and Methods: The first class students of nursing faculty formed the basis for this descriptive research (N=347). Sample selection was not made and all female students who wanted to participate voluntarily in the research during March-May of 2014 were included (n=331). Results: It was determined that 85.5% of students had knowledge about cancer, 79.5 % knew of breast cancer, and 65.3% were aware of how BSE is performed. According to the responses of students to the scale of the health belief model that is used to determine the health beliefs of students, item-point averages of trust and obstacle sub-dimensions were high. Conclusions: It is determined that more than half of students had knowledge about breast cancer and breast self-examination. Their health beliefs were affected by trust and obstacle perceptions, knowledge level about cancer, and awareness about how BSE is done. These factors should be considered in planning trainings that will be given to students. Social responsibility projects should have designed to create the awareness that cancer is a treatable disease.

Development of a model for animal health monitoring system in Gyeongnam I. Design, data and frequencies of selected dairy cattle diseases

  • Kim, Jong-shu;Kim, Yong-hwan;Choi, Min-cheol;Kim, Gon-sup;Kim, Chung-hui;Park, Jeong-hee;Hah, Dae-sik;Heo, Jung-ho;Jeong, Myeong-ho;An, Dong-won
    • 대한수의학회지
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    • 제39권4호
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    • pp.730-737
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    • 1999
  • A national animal health monitoring system(NAHMS) in Gyeongnam area was started from 1997 to develop statistically valid data for use in estimating disease frequencies in dairy cattle, and the associated costs. The objectives of this study were to : (1) discribe what was done to implement and maintain the system in Gyeongnam ; (2) present selected disease frequencies ; (3) discuss the epidemiological consideration of what was done and implications for the results obtained. Veterinary Medical Officers(VMOs-professors and graduate students from Gyeongsang National University, Faculty of Gyeongnam Livestock Promotion Institute, and Clinic veterinarians) served as data collectors. After training on current disease and management problems of dairy cattle, interview techniques, sampling methods, and data collection instruments, the VMOs participated in selection of the sample herds and data gathering. Forty of 167 dairy herds were selected randomly and the VMOs visited farms once a month for 12 months to collect data about management, disease, inventory, production, preventive treatment, financial and any other relevant data. Strict data quality control devices were used. Specific feed-back was developed for the producers and data collectors. Of the three age groups studied, cows had the greatest number of disease problems. The six disorders found most frequently were (from the highest to the lowest) breeding problems, clinical mastitis, birth problems, gastrointestinal problems. metabolic problems, and lameness. In young stock, respiratory, multiple system, breeding problems, and gastrointestinal problems were pre dominant, whereas in calves, gastrointestinal, respiratory, and integumental problems were major.

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재가 장기요양 서비스 이용과 노인 가족돌봄제공자의 돌봄 스트레스: 방문간호 서비스의 영향 (Effects of Home Care Services Use by Older Adults on Family Caregiver Distress)

  • 김지연;김홍수
    • 대한간호학회지
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    • 제46권6호
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    • pp.836-847
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    • 2016
  • Purpose: The purpose of this study was to examine the association between utilization of home care services under the national long-term care insurance system and family caregiver distress. Methods: A secondary data analysis was conducted in this study using data collected in 2011 and 2012 from the Korean version of International Resident Assessment Instrument (interRAI) Home Care assessment system. The study sample included 228 clients receiving community based home care and their family caregivers in Korea. Descriptive statistics, $x^2$ test, t-test, and Heckman selection model analysis were conducted using SAS 9.3. Results: Presence of family caregiver distress was significantly associated with days of nurse visits (${\beta}$=-.89, p=<.001) and home helper visits (${\beta}$=-.53, p=.014). Level of caregiver distress was also significantly associated with days of nurse visits (${\beta}$=-.66, p=.028). Other factors which were significantly associated with caregiver distress were depression, cognitive function, inadequate pain control, social support for older adult, and caregiver relationship to the older adult. Conclusion: The results of this study show that visiting nurse service and appropriate support programs for Older Adults and family caregivers experiencing caregiver distress should be developed and provided to families based on the health care needs of older adults and their family caregivers for effective and sustainable home care.

사용성 평가 전용 인체모델 선정 소프트웨어 개발 및 자동차 적용사례 (Development Software to Select Boundary Manikins for Product Evaluation: Applied to an Automobile Case)

  • 임영재;박성준;박우진;박준수;정의승;임익성
    • 대한인간공학회지
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    • 제29권6호
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    • pp.831-841
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    • 2010
  • Usability evaluation of physical products involves characterizing complex physical interactions between humans and products. Human models known as manikins have been widely utilized as usability evaluation tools for automobile interior package design. When combined with computer-aided design software programs, such manikins can be used to simulate driving postures and evaluate driver-interior fits early in the design process, and therefore, may greatly facilitate achieving high-quality design in a cost-efficient manner. The purpose of this study was to define a set of manikins for designing automobile interior packages for the South Korean male population. These manikins were conceptualized as "boundary" manikins, which represent individuals lacking in certain physical capacities or having usability-related issues (e.g., an individual with the 5th percentile forward reach capability, an individual with the 95th percentile shoulder width). Such boundary manikins can serve as an efficient tool for determining if an automobile interior design accommodates the majority of the population. The boundary manikins were selected from the large sample of Korean males whose anthropometric dimensions were described in the recent Size Korea anthropometric database. For each male in the database, his comfortable driving posture was represented using a kinematic body linkage model and various physical capacity measured and usability-related characteristics relevant to driver accommodation were evaluated. For each such measure, a boundary manikin was selected among the Korean males. The manikins defined in this study are expected to serve as tools for ergonomic design of automobile interior packages. The manikin selection method developed in this study was implemented as a generic software program useful for various product design applications.

대학생의 개인적 특성이 창업멘토링과 교육만족, 창업의지에 미치는 영향 (Effect on startup mentoring, education satisfaction, and startup intention according to the individual characteristic of university student)

  • 윤인철
    • 한국융합학회논문지
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    • 제8권6호
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    • pp.265-273
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    • 2017
  • 본 연구는 대학생의 개인특성에 따라 창업멘토링과 창업교육만족도, 창업의지에 미치는지 영향에 관한 연구를 알아보고, 대학생의 창업역량과 창업성과를 높이기 위한 방법을 도출하는 것이 주요한 목적이다. 이를 위해 광주지역 대학생 237명의 표본자료 통계처리는 SPSS 2.0 For Windows를 활용하여 빈도분석, 신뢰도분석, 요인분석, 다중회귀분석 실시하였다. 혁신성을 제외한 개인적 특성요인은 창업멘토링, 창업교육만족도에 영향을 미치고, 창업멘토링은 창업교육만족도에 영향을 미치는 것으로 나타났으며, 창업멘토링요인 중 역할모델기능만이 창업의지에 영향을 미치는 것으로 나타났고. 창업교육만족은 창업의지에 영향을 미치는 것으로 나타났다. 결과적으로 대학에서는 역량 있는 창업멘토를 선정하고, 대학생의 개인적 특성에 맞는 창업멘토링과 체계적인 창업교육 프로그램을 통해 창업의지와 창업성과를 높일 수 있다.