• Journal of Animal Science and Technology
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• 제55권5호
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• pp.399-403
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• 2013

국가간 유전능력평가를 위하여 5산차 다형질 모형을 적용한 다형질유효 딸소 기여도를 추정하기 위하여 농협중앙회 젖소개량부에서 수집한 한국형 보증종모우 및 수입 씨수소 2,046두의 딸소에 대한 산유량 검정기록 및 관련된 혈통을 수집하였으며, 수집된 산유량 검정기록 중 산차는 5산차, 누적착유일은 75~307일로 제한하였고, 305일 보정유량이 15,000 kg이 넘는 기록은 국제평가기준에 맞추기 위하여 제거하여, 총 301,551두 딸소의 681,860개 기록을 이용하였다. EDC 계산을 위하여 모든 개체의 육종가 추정 신뢰도를 부모 육종가 평균 (Parents average), 개체의 기록(Yield deviation) 및 배우자의 신뢰도가 보정된 후손의 육종가 기여도(Progeny contribution) 부분으로 분리하였으며, 1~5산차 유생산 유전상관을 고려하여 다형질 유효 딸소 기여도를 추정하였다. 씨수소 2,046두의 유생산 기록을 가지는 딸소 두수의 산차별 평균은 1~5산에서 각 140.57, 94.24, 55.14, 29.20 및 14.06두로 나타났으며, 추정된 MTEDC는 113.49, 89.28, 73.56, 54.02 및 35.08로 나타나 3산 이후의 기록이 부족함에도 유전상관을 고려한 EDC 추정치는 높게 형성되어 검정자료의 활용도가 높아진 것을 확인하였다. 또한 EDC 계산은 국제유전능력평가 적용을 위한 필수항목으로 정확한 국제유전능력평가를 위해서는 관련 알고리즘에 대한 이해가 필요하며, 지속적인 EDC 검증 및 종모우당 딸소 검정 두수 증가 등의 노력이 필요하다고 사료된다.

• 한국생활과학회지
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• 제17권6호
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• pp.1037-1049
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• 2008

The purpose of this study was to find the influences of adolescents' sex-role, attachment with parents on self-efficacy of middle school students. The subjects were 281 students. Frequency, percentage, mean, standard deviation, Cronbach's ${\alpha}$, t-test, ANOVA, and multiple regression were examined for statistical analysis. The results of this study were as follows. 1) It was shown that the student have a high level attachment to their parents and especially to their fathers. The androgyny was expressed a high among the students' sex-role trait, The students' self-efficacy level was relatively high. 2) It was expressed a significant correlation among adolescents' sex-role trait, attachment with parents and self-efficacy. Especially a high correlation between adolescents' sex-role trait and self-efficacy. 3) The students' self-efficacy level was significantly different according to the sex-role trait, attachment and gender. 4) The relative influence toward the students' self-efficacy was shown in the order of impotance as follows: sex-role trait, attachment with a mother and gender.

• 대한가정학회지
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• 제48권1호
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• pp.127-136
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• 2010

The purpose of this study was to investigate the relationships between the young children's creative trait and personality affecting their learning readiness. The participants were 131 young children in kindergartens or nursery schools and their mothers from Seoul, Gyeonggi and Chungnam province. The instruments were the Korea Learning Readiness Test, Young Children's Creative Traits Test, and Young Children's Personality Test. The data were analyzed by one-way ANOVA, t-test, Pearson's partial correlation, stepwise multiple regression, and Scheff$\'{e}$ test by SPSS PC(version17.0) program. The results were as follows. Firstly, there were no significant differences in young children's learning readiness, creative trait and personality by children's age, location, school type, father's age, mother's educational level and mother's job type, while there were significant differences in the creative trait and the subfactor scores of personality by children's sex, father's educational level and parents' job type. Secondly, there was a positive partial correlation(r = .20~.24) between young children's learning readiness and creative trait, while there were no correlations between their learning readiness and personality and between their personality and creative trait. Thirdly, cognitive factor of creative trait and father's educational level did not effectively explain the children's learning readiness.

• 한국임상보건과학회지
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• 제6권2호
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• pp.1147-1155
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• 2018

Purpose: This study investigates university students' SNS addiction tendency, trait-anxiety and quality of sleep. This study is going to offer basic resource that required to make the way that is able to reduce the anxiety with figuring out the relation between variable. Method: 213 people participated in this study is 20 to 30 age of university students who use SNS. Collecting resource period was April 4 to May 11, 2018. Analyses consisted of descriptive statistics, ANOVA, Pearson's correlation analysis, and stepwise multiple regression analysis. Results: The findings showed SNS addiction tendency and quality of sleep(r=.45, p<.000). Major Influence factor is predicted addiction tendency of SNS using time (F=21.21, p=.000) and trait-anxiety (F=23.55, p=.000). Of the highest trait-anxiety affects quality of sleep (F=24.82 p=.000). Conclusion: These findings indicate that it is necessary to develop and implement information programs and design appropriate SNS addiction prevention programs that can induce trait-anxiety and improve quality of sleep. Thus follow-up study should have diverse participants to investigate SNS addiction tendency, trait-anxiety and quality of sleep that influenced by overusing SNS.

• Asian-Australasian Journal of Animal Sciences
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• 제15권7호
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• pp.925-931
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• 2002

Gibbs sampling algorithms were implemented to the multi-trait threshold animal models with any combinations of multiple binary, ordered categorical, and linear traits and investigate the amount of bias on these models with two kinds of parameterization and algorithms for generating underlying liabilities. Statistical models which included additive genetic and residual effects as random and contemporary group effects as fixed were considered on the models using simulated data. The fully conditional posterior means of heritabilities and genetic (residual) correlations were calculated from 1,000 samples retained every 10th samples after 15,000 samples discarded as "burn-in" period. Under the models considered, several combinations of three traits with binary, multiple ordered categories, and continuous were analyzed. Five replicates were carried out. Estimates for heritabilities and genetic (residual) correlations as the posterior means were unbiased when underlying liabilities for a categorical trait were generated given by underlying liabilities of the other traits and threshold estimates were rescaled. Otherwise, when parameterizing threshold of zero and residual variance of one for binary traits, heritability estimates were inflated 7-10% upward. Genetic correlation estimates were biased upward if positively correlated and downward if negatively correlated when underling liabilities were generated without accounting for correlated traits on prior information. Residual correlation estimates were, consequently, much biased downward if positively correlated and upward if negatively correlated in that case. The more categorical trait had categories, the better mixing rate was shown.

• 한국지역사회생활과학회지
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• 제15권1호
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• pp.3-16
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• 2004

The purpose of this study is to provide basic data for studying contemporary family violence, and to examine self-differentiation and trait-anxiety levels of urban-area housewives. The 207 subjects were married and living in urban areas. The statistical analyses used for this data were frequency, percentile, ANOVA, correlation, and multiple-regression. The main results obtained from this study were as follows: 1) Period of the family violence is 6-10 years, the main forms of violent behavior are kicking and punching, and the most violently abused wives want to divorce their husbands. 2) The self-differentiation level is 2.78, the verbal violence level is 2.06, the physical violence level is 2.06, and the trait-anxiety level is 2.49. 3) The degree of self-differentiation differed according to level of wife's education, husband's education, type of residence, income, wife's occupation, and husband's occupation. 4) The degree of violence differed according to level of wife's education, husband's education, type of residence, income, wife's occupation, and husband's occupation. 5) The degree of trait-anxiety differed according to level of husband's education, income, wife's occupation, and husband's occupation. 6) Wife's occupation, intellectual function vs. emotional function, family projection, verbal aggression behavior influenced on trait- anxiety.

• 한국멀티미디어학회논문지
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• 제17권8호
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• pp.937-945
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• 2014

Multi-modal biometric system can use another biometric trait in the case of having deficiency at a biometric trait. It also has an advantage of improving the performance of personal identification by using multiple biometric traits, so studies on new biometric traits have continuously been performed. The inner face of finger is a relatively new biometric trait. It has two major features of knuckle lines and wrinkles, which can be used as discriminative features. This paper proposes a finger identification method based on displacement vector to effectively process some variation appeared in contactless hand image. At first, the proposed method produces displacement vectors, which are made by connecting corresponding points acquired by matching each pair of local block. It then recognize finger by measuring the similarity among all the detected displacement vectors. The experimental results using pubic CASIA hand image database show that the proposed method may be effectively applied to personal identification.

• 대한안전경영과학회지
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• 제17권1호
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• pp.67-74
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• 2015

This paper reviewed the relationship between job demands and safety motivation, and the moderating effect of A-type trait in Korean Air Force. Based on the responses from 722 responses, the results of multiple regression analysis appeared as follow; 1) role overload effects positively and role ambiguity effects negatively on intrinsic safety motivation. 2) role conflict effects negatively on extrinsic safety motivation. 3) role ambiguity effects negatively on intrinsic safety motivation in B-type than in A-type trait.

• 아동학회지
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• 제38권3호
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• pp.49-63
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• 2017

Objective: The main purpose of this study was to examine the relationship between marital conflict, parentification, and adolescent anxiety. Methods: The participants comprised 301 high school students from the Seoul province. They were asked to complete questionnaires that consisted of the State-Trait Anxiety Inventory, the Children's Perception of Interparental Conflict Scale, and the Filial Responsibility Scale-Youth. The data were analyzed by frequency analysis, Cronbach's ${\alpha}$, descriptive statistical analysis, Pearson's correlation coefficients, multiple regression analysis, and hierarchical multiple regression analysis. To analyze the collected data, SPSS 18.0 was used. Results: First, the content and resolution of marital conflict had an effect on both adolescent state anxiety and trait anxiety. Second, unfairness parentification had an effect on both adolescent state anxiety and trait anxiety. Third, the frequency of marital conflict had an effect on emotional parentification. Further, the intensity, content, and resolution of marital conflict had effect on unfairness parentification. Fourth, unfairness parentification played a partial mediating role in the relationship between the content of marital conflict and adolescent anxiety (state anxiety/trait anxiety). In addition, unfairness parentification played a complete mediating role in the relationship between the resolution of marital conflict and adolescent trait anxiety. Conclusion: These results indicate that parentification plays an important role in marital conflict and adolescent anxiety. In addition, this study also shows that marital conflict has an important effect on adolescent anxiety directly. Therefore, this study will be useful for developing both parental education and counseling programs for adolescents.

• Journal of Animal Science and Technology
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• 제55권1호
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• pp.1-6
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• 2013

본 연구는 국내 국가단위 평가결과의 문제점을 해결하면서 유전 능력평가시스템을 고도화하고 우리나라가 국제유전평가에 참여하기 위하여 국제평가기구에서 요구하는 검증작업을 통과하기 위하여 수행하였다. 본 연구에 이용된 자료는 농협중앙회 젖소개량부에서 수집한 분만일이 2001년부터 2009년까지의 검정성적으로 총 1,416,589개이며 산차는 5산으로 제한하였으며, 누적착유일은 75~305일로 제한하였고, 전체 혈통자료는 2,279,741개이며 부모를 갖는 개체는 535,409개이고 아비소는 2,467두로 구성되어 있는 기록들을 이용하였다. 유량, 유지방, 유단백에 대한 육종가는 신규로 개발한 다형질모형(Multiple traits model)을 이용하여 육종가를 구하였으며 기초작업은 SAS version 9.2와 R프로그램을 이용하였으며 유전모수를 추정하기 위하여 VCE 6.0을 이용하였다. 전반적으로 유전적 추세는 꾸준히 지속되어 오고 있으며 산차별 차이가 두드러지게 나타나지는 않았다. 유지방을 제외하고 유량과 유단백 형질의 추세가 잘 추정되었음을 알 수 있다. 유전평가분석결과 상위 1000두의 랭킹안에 최근의 생년을 갖는 딸소가 기존에 사용한 모수로 분석한 결과보다 딸소가 증가했음을 알 수 있다. 국제유전평가모형을 통해 새로 평가한 결과 씨수소상위 100두를 기존 평가모형에 의한 평가결과와 비교했을 때, 2006년생은 23두에서 28두로 2007년생은 12두에서 20두로 2008년생은 2두에서 8두로 증가하였다. 이는 최근의 딸소나 씨수소의 유전능력이 우수함에도 불구하고 상위에 랭크되지 못했던 결과가 새 모형의 적용으로 보완하여 새로운 평가분석에 적용할 수 있을 것으로 판단된다. 따라서 기존의 단형질 모형 대신 다형질 모형을 이용한 분석방법으로 평가를 실시하고 국제유전평가에도 다형질 모형을 이용한 육종가를 제시함으로써 다형질 선발의 정확도가 향상될 수 있을 것이다.