• Asian-Australasian Journal of Animal Sciences
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• 제25권8호
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• pp.1073-1082
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• 2012

We first sought to clarify the effects of discounted rate, survival rate, and lactation persistency as a component trait of the selection index on net merit, defined as the first five lactation milks and herd life (HL) weighted by 1 and 0.389 (currently used in Japan), respectively, in units of genetic standard deviation. Survival rate increased the relative economic importance of later lactation traits and the first five lactation milk yields during the first 120 months from the start of the breeding scheme. In contrast, reliabilities of the estimated breeding value (EBV) in later lactation traits are lower than those of earlier lactation traits. We then sought to clarify the effects of applying single nucleotide polymorphism (SNP) on net merit to improve the reliability of EBV of later lactation traits to maximize their increased economic importance due to increase in survival rate. Net merit, selection accuracy, and HL increased by adding lactation persistency to the selection index whose component traits were only milk yields. Lactation persistency of the second and (especially) third parities contributed to increasing HL while maintaining the first five lactation milk yields compared with the selection index whose only component traits were milk yields. A selection index comprising the first three lactation milk yields and persistency accounted for 99.4% of net merit derived from a selection index whose components were identical to those for net merit. We consider that the selection index comprising the first three lactation milk yields and persistency is a practical method for increasing lifetime milk yield in the absence of data regarding HL. Applying SNP to the second- and third-lactation traits and HL increased net merit and HL by maximizing the increased economic importance of later lactation traits, reducing the effect of first-lactation milk yield on HL (genetic correlation ($r_G$) = -0.006), and by augmenting the effects of the second- and third-lactation milk yields on HL ($r_G$ = 0.118 and 0.257, respectively).

• 한국의상디자인학회지
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• 제19권2호
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• pp.79-90
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• 2017

The main purpose of the study was to explore effects of selection criteria of collaborating fashion companies on the partnership growth of collaborating artists with those companies. Secondly was to find differences in the selection criteria of collaborating fashion companies and the partnership growth of collaborating artists according to the characteristics of artists including gender, age, frequency and time period of collaboration. The questionnaire was developed by the researchers and was collected from 50 artists with experience in collaboration with fashion companies. The questionnaire was composed of three parts including the selection criteria of fashion companies, partnership growth measured by a Likert-type scale, and characteristics of artists measured by a nominal scale. Data were analyzed by a frequency test, factor analysis, reliability test, regression analysis, and independent sample t-test using SPSS Win 18.0. The results of the study showed that significant effects of the selection criteria of collaborating fashion companies on the partnership growth of collaborating artists with the companies. Also, there were differences in the selection criteria of collaborating fashion companies and the partnership growth of collaborating artists between artist groups according to the characteristics of the artists including gender, age, frequency and time period of collaboration.

• 한국컴퓨터정보학회논문지
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• 제26권2호
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• pp.133-140
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• 2021

본 연구는 헤어전공 대학생의 전공선택동기와 취업준비행동의 관계를 알아보고, 전공선택동기와 취업준비행동의 관계에서 전공만족도의 매개효과가 있는지를 밝히고자 하였다. 연구대상자는 B지역의 전문대학에 다니고 있는 헤어전공 학생 154명이었다. 연구도구는 전공선택동기척도, 전공 만족도 척도와 취업준비행동척도를 사용하였다. 자료분석은 기술통계, 적률상관분석, 회귀분석을 실시하였다. 또한 헤어전공 대학생의 전공선택동기와 취업준비행동의 관계에서 전공만족도의 매개효과를 검증하기 위하여 위계적 중다회귀분석을 실시하고, 매개효과에 대한 유의도 검증을 위해 Sobel 검증을 하였다. 본 연구의 결과는 다음과 같다. 첫째, 헤어전공 대학생의 전공선택동기 중 개인적 동기는 전공만족도, 취업준비행동과 정적 상관이 있었으며, 사회적 동기는 취업준비행동과 정적상관이 있었고 전공만족도는 취업준비행동과 정적상관이 있었다. 둘째, 헤어전공 대학생의 개인적 동기와 전공만족도가 취업준비행동에 영향을 미쳤다. 셋째, 헤어전공대학생의 전공만족도는 개인적 동기와 취업준비행동의 관계에서 부분매개 효과가 있었다. 한편 전공만족도는 사회적 동기와 취업준비행동의 관계에서 직접효과만 있었다.

• 대한간호학회지
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• 제37권3호
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• pp.414-421
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• 2007

Background: Nursing intervention studies often suffer from a selection bias introduced by failure of random assignment. Evaluation with selection bias could under or over-estimate any intervention's effects. PS matching (PSM) can reduce a selection bias through matching similar Propensity Scores (PS). PS is defined as the conditional probability of being treated given the individual's covariates and it can be reused to balance the covariates of two groups. Purpose: This study was done to assess the significance of PSM as an alternative evaluation method of nursing interventions. Method: An intervention study for patients with some baseline individual characteristic differences between two groups was used for this demonstration. The result of a t-test with PSM was compared with a t-test without matching. Results: The level of HbA1c at 12 months after baseline was different between the two groups in terms of matching or not. Conclusion: This study demonstrated the effects of a quasi-random assignment. Evaluation using PSM can reduce a selection bias impact that affects the result of the nursing intervention. Analyzing nursing research more objectively to reduce selection bias using PSM is needed.

• 한국식생활문화학회지
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• 제35권2호
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• pp.156-166
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• 2020

In this study, 594 questionnaires administered to men and women residing in the capital metropolitan area who work night shifts were analyzed in order to study the effect of health information cognition on healing needs in accordance with the type of food selection criteria of the night worker. The results of confirmatory factor analysis in deriving food selection type identified four categories, a safety seeking type, a food exploratory type, a habitual seeking type, and a rational type, and the cognition types on health information were classified into physical cognition and psychological cognition. The need for healing, which was the investigated factor, was found to have a high correlation between questionnaire items with high reliable consistency. The results of this study were as follows. First, the food selection types of safety seeking type and habitual food seeking type had significant positive effects on the cognitive level of physical health information, and food exploratory type and habitual seeking type had significant positive effects on the cognitive level of psychological health information. In addition, it was shown that food exploratory type and rational type had significant positive effects on healing needs. As a result of this study, it was found that the cognition level of physical and psychological information was different according to food selection type, and the higher the cognitive level, the higher the healing needs. In particular, the result that the level of psychological health information significantly affected healing needs signifies that there is a demand to develop programs and menus that satisfy various needs related to healing and recovery from fatigue. In addition, further interest and study on the health and healing of night workers are required.

• 한국데이터정보과학회:학술대회논문집
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• 한국데이터정보과학회 2006년도 PROCEEDINGS OF JOINT CONFERENCEOF KDISS AND KDAS
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• pp.171-179
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• 2006

For the problem of variable selection in linear models, we consider the errors are correlated with V covariance matrix. Hocking's theorems on the effects of the overfitting and the underfitting in linear model are extended to the less than full rank and correlated error model, and to the ANCOVA model.

• 한국통계학회:학술대회논문집
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• 한국통계학회 2005년도 추계 학술발표회 논문집
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• pp.187-192
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• 2005

For the problem of variable selection in linear models, we consider the errors are correlated with V covariance matrix. Hocking's theorems on the effects of the overfitting and the undefitting in linear model are extended to the less than full rank and correlated error model, and to the ANCOVA model

• 한국조리학회지
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• 제10권1호
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• pp.82-95
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• 2004

This study had an aim to analyze the relationship between consumers' selection of restaurant and constitutional factors of the images of Bibimbap Specialty restaurant. The study examined through constitutional factors including hygiene, employee, facility, brand, convenience, price and food, and found those effects on selection of restaurant. In addition, the image of restaurant had an effect on that of hygiene and employee, price and food in order.

• 패션비즈니스
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• 제15권1호
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• pp.115-128
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• 2011

The purposes of this study were to identify the effects of women's attitudes, selection, and wearing experience on purchasing intention of underwears made of smart fibers. Most women wore brassieres when going out and preferred moulded cup brassieres, but neglected wearing corsets. Age and marital status of women affected on women's attitudes toward underwear. Younger women in 20's preferred underwears made of smart fibers such as high hygroscopic and older women in 40's preferred conservative underwear. Most women had experienced stretchy underwear and wearing experiences of smart fiber underwears were positively related to purchasing intention. Underwear wearing experiences affected positively on purchasing intention of smart fiber underwears but some functions such as design and comfort affected negatively.

• 산업경영시스템학회지
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• 제30권3호
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• pp.109-116
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• 2007

Entrepreneurship is considered as the main leadership creating enterprises and employment. However, in Korea empirical studies linking Korean entrepreneurial performances with her characteristics are rarely in existence. Current study focuses on Korean entrepreneurs in manufacturing, construction and other technologically intensive (MCOT henceforth) industries compared to entrepreneurs in service and other technologically less intensive (SOT henceforth) industries and to professional/technical wage workers and examines effects of human capital, demographic, and risk-taking characteristics on earnings. Education premium is higher for entrepreneurs in MCOT industries than for professional/technical workers, even though science and engineering diploma pays better in the latter, and that concentration in college causes more selection into the latter occupational family. In terms of education premium and effects of other characteristics SOT industry entrepreneurship and self-employment appear to be lower grade occupational families, even though there appear to be significant comparative advantages working in their selection.