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- 저자 : 박재현(ParkJae-Hyeon) (검색결과 4 건)
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측정평가 : 구조방정식 모형에 의한 다 집단검증(1) : 운동의사결정 균형검사의 요인불변성
박재현(ParkJae-Hyeon) 한국체육학회 2003 한국체육학회지 Vol.42 No.2
The purpose of this study was to introduce on factorial invariance of multi-group testing by structural equation modeling. Further, the second purpose involved assessing the construct validity and invariance of the two factor first-order model to the Decisional Balance for Exercise Scale(DBES) in a college student sample of men and women. For comparing the invariance of the factor structures in the DBES of multiple samples, a systematic way involves the testing of a series of hierarchical hypotheses by Joreskog and Sorbam(1989). To conduct this analysis, a preliminary test erf invariance across male and female groups in terms of their covariance structures(i.e.,∑<sub>1</sub>=∑<sub>2</sub>) was analyzed. The hypothesis of equal covariance structures for DBES male sample and the DBES female sample was rejected. The, the analysis proceeded to test the hypotheses of invariance to find parameters responsible for the different covariance structures. It was failed to reject the hypotheses of invariance factor patterns(Ho.2) at the significance level of 5%. The hypothesis of Factor variance invariance between samples(Ho.3) was rejected at the significance level of 1%, indicating the difference in covariance structures between two samples can be mainly explained by factor variance of pros and cons factor. In sum, this analysis indicates that the refined DBES does measure the same underlying concept of both sauries.
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박재현(ParkJae-Hyeon),강상조(KangSang-Jo) 한국체육학회 2003 한국체육학회지 Vol.42 No.4
The purpose of this study was to introduce on univariate Overlap Zone (OZ) and applicate on MS-Excel programing for OZ. OZ is mean that two distributions are the degree to overlapping. Two distributions can differ from each other if the mean of one is dislocated relative to the other, if the variability of one is markedly different from the other. It would like to be able to quantify in OZ for a selection pressure, there are some difficult on OZ calculation because it is need to calculate by iteration over 10 or more for the intersection of two curves. The easyOZ by Excel is program for compute OZ based on the MS-Excel by Microsoft. This OZ and Easy OZ would allow us to understand more completely the relative importance of different anthropometric variables, make informed judgments about talent identification criteria, and compare selection pressures in population subgroups such as males vs females, or national-level player vs international-level player.
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신체활동 프로그램이 발달장애학생의 기본운동기술 향상에 미치는 효과: 네트워크 분석에 의한 연구통합
윤지운(YoonJiwun),박재현(ParkJae-hyeon) 한국체육학회 2017 한국체육학회지 Vol.56 No.1
이 연구는 발달장애학생을 대상으로 신체활동 프로그램이 기본운동기술 향상에 미치는 효과를 분석한 선행연구를 네트워크 분석방법으로 통합하여 종합결론을 도출하는 것이 목적이다. 이 목적을 달성하기 위하여 발달장애학생을 대상으로 하여 기본운동기술 향상을 위해 신체활동 프로그램을 적용한 18편의 국내 선행연구를 선정하여 네트워크 분석으로 통합된 결론을 도출하고자 하였다. 발달장애학생의 기본운동기술을 이동능력과 조작능력으로 구분하여 신체활동 프로그램의 효과를 ES(effect size) 형태로 산출하였고, 각 연구에서 변수 간 관계로부터 산출한 ES를 대상으로 Netminer 4.0을 이용하여 네트워크 형태로 분석하였다. 이때, 2-모드 네트워크 분석모형을 적용하여 각 변수별로 연결중앙성, 매개중앙성 그리고 위세중앙성의 값을 산출하였고 변수 간 관계를 통합하여 시각화하였다. 네트워크 분석을 적용한 발달장애학생의 기본운동기술에 관한 18편의 선행연구를 통합한 신체활동 프로그램 효과는 다음과 같다. 첫째, 신체활동 프로그램은 발달장애 남학생의 기본운동기술 중에서 갤롭과 홉 기술향상에 효과가 있다. 둘째, 발달장애학생의 기본운동기술에 관한 신체활동 프로그램은 ‘12주 이내’로 구성하였을 때 가장 효과적이다. 셋째, 발달장애학생을 대상으로 한 신체활동 프로그램은 장애 유형에 따라 기본운동기술에 미치는 효과는 차이가 있다. The purpose of this study was to integrate the effect of physical activity program on gross motor skills for students with developmental disabilities using network analysis. For this purpose, 18 research results that is related with this research issue, the effect of physical activity program on gross motor skills for students with developmental disabilities were integrated. The effect sizes were calculated as the basic unit for equating of different research situations, and 2-mode network analysis was applied by Netminer 4.0 for integrating of 18 research results. The degree, between and eigenvector centralities were selected for evaluating indicators on networks. The conclusions are as follows: First, the physical activity program of 'within 12 week' applied to students with developmental disabilities, the program was most effective. Second, physical activity program for student with developmental disabilities has different effect to the development of gross motor skill.
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측정평가 : 체밀도 추정공식의 차이가 체지방추정 결과에 미치는 영향
강상조(KangSang-Jo),박재현(ParkJae-Hyeon),김혜진(KimHea-Jin) 한국체육학회 2003 한국체육학회지 Vol.42 No.2
The purpose of this study was to examine influences of estimated body density equations on the results of relative body fat. For this purpose, we used an computer analysis method called Monte Card computer simulation and 65 body density equations were collected. Among these equations, we used only 45 equations which are reported SEE and one of the data(subject C) which bad full profile which takes 29 region anthropometry measurement. For the raw data, Monte Carol computer simulation procedure attends to create 46,000 pseudo data by using 100 random variables which repeated 10 times from 45 equations. Random sampling is performed 10 times from these data which were categorized according to gender, age, race, professional-sports experience, and caliper.The result has it that the range of Relative body fat from different equations on a single person was about 16%-37%. In conclusion, the most influential variable was age, the second was gender, the third was ethnic and the next was caliper. But this study figure out that the experience of athlete has no influence on these equations. For the following studies using Montecarol computer simulation, we suggest the data for the analysis include extended peculation of data
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