• Journal of the Korean Data and Information Science Society
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• v.23 no.3
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• pp.505-514
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• 2012

This study is for effectiveness of golf skills to average score using path analysis in Professional golf association. The variables in this study were that seven independent variable were driving accuracy, green in regulation, driving distance, sand save ratio, scrambling, putting average, and two endogenous variables were birdie average, bogey average, and dependent variable was the scoring average. To analyze these variables, path analysis was used through AMOS 18.0 program and Alpha level sets at.05. As the result, the final model had significant goodness-of-fit (GFI=.989, RMSEA=.044, TLI=.991, CFI=.998) and showed that green in regulation, driving distance, sand save ratio, scrambling, and putting average significantly affected average score directly. Especially, the scrambling was the highest affectation to average score and the sand save ratio was the lowest affectation to the average score.

• The Korean Journal of Applied Statistics
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• v.33 no.2
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• pp.171-184
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• 2020

Major League Baseball (MLB) records and releases the trajectory data for every baseball pitch, called the PITCHf/x, using three high-speed cameras installed in every stadium. In a previous study, the quality of the pitch was assessed as the expected number of bases yielded using PITCHf/x data. However, the number of bases yielded does not always lead to baseball scores, or runs. In this paper, we assess the quality of a pitch by combining baseball analytics metric Run Expectancy and Run Value using a Random Forests model. We compare the quality of pitches evaluated with Run Value to the quality of pitches evaluated with the expected number of bases yielded.

• Journal of the Korean Data and Information Science Society
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• v.24 no.2
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• pp.369-377
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• 2013

The purpose of this study was to explore which factors mostly influenced players' tour results employing tour skill factors provided by LPGA. For this study, Top 10 LPGA players' stats during 9 years (2004 2012) were used. As matter of fact, 10 variables were used like average score, top 10 finish, average putt, average birdies, average eagles, driving distance, driving accuracy, greens in regulation, sand saves, putts per GIR. and prize money earning. Stepwise multiple regression was conducted using SPSS win 20.0. Results indicated that the most influential tour skill factor to 9 seasons' results was average score, second influential factor was average putt, and the third factor was driving distance, and then top 10 finish was the fourth. Also on a year on year basis, 2004 was average score, 2005 was GIR., 2006 was average eagles, 2007 was top 10 finish, 2008 was average score, 2009 was average putt, 2010 were average score, GIR. and putt per GIR, 2011 was average birdies and 2012 was putt per GIR.

• Journal of the Korean Data and Information Science Society
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• v.24 no.3
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• pp.543-555
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• 2013

This study is to analyze effectiveness of golf skills (driving distance, rating of fairway, green in regulation, sand save ratio, recovery ratio, putting average) to average score using records of PGA, LPGA, KPGA, KLPGA. Independent variables were driving distance, rating of fairway, green in regulation, sand save ratio or recovery ratio, putting average. Dependent variable was the scoring average in this study. To analyze these variables, multi-group (PGA vs LPGA, KPGA vs KLPGA, PGA vs KPGA, LPGA vs KLPGA) path analysis was used through AMOS 18.0 program and significance level was set at 0.05. As the result, the variables that show significant differences of path coefficient between PGA model and LPGA model were driving distance and green in regulation to average score. The variables that show significant differences of path coefficient between KPGA model and KLPGA model were driving distance, recovery ratio, and putting average to average score. The variables that show significant differences of path coefficient between PGA model and KPGA model were driving distance, recovery ratio, and putting average to average score. There was not significant difference of path coefficient between LPGA model and KLPGA model.

• Journal of the KSME
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• v.47 no.1 s.314
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• pp.61-66
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• 2007

• Journal of the Korean Data and Information Science Society
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• v.22 no.1
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• pp.65-71
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• 2011

Path analysis is a useful method to find out direct or indirect effects between variables. Compared to regression analysis for studying the casual relationship, this method has a good advantage. In this study, I want to figure out direct or indirect relationships between golf skills and adjust average scores using path analysis. To analyze data, I applied AMOS in SPSS and collected data in 2010 PGA.

• The Korea Swine Journal
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• v.23 no.9 s.265
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• pp.87-91
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• 2001

국내 돼지 인공수정은 1994년 이후 보급이 급속히 확산 되면서 1994년 보급률 $3\%$, AI센타수 5개소 이던 것이 현재는 보급률 50-60$\%$, AI센타수 60여개소로 최근 양돈관련 산업중 가장 성장한 산업중의 하나이며 중요한 양돈관련 업종의 하나로 자리 매김을 하였다. 그러나 그동안의 돼지 인공수정은 양적성장에 치중하여 왔고 최근에는 무분별한 납립으로 인한 과당경쟁과 불공평경쟁으로 인한 어려움으로 품질저하, 재투자 및 기술투자 의욕상실 등 국내 돼지인공수정은 뿌리를 든든히 내리기도 전에 성장이냐 쇄락이냐의 기로에서 위기상황을 맡고 있다. 따라서 이대로 방치 할 경우 기껏 양돈선진국 수준으로 올라선 인공수정산업이 보급률의 저하 등 산업 발전의 후퇴를 가져올 것으로 우려 된다. 이에 돼지 인공수정산업 각 부분별 문제점과 대안을 제시 하고자 한다.

• Journal of the Korea Convergence Society
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• v.6 no.4
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• pp.47-54
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• 2015

This study was conducted an convergence research on 210 mothers in order to examine the effect of golf on subjective happiness of mothers who have children with disabilities. The factors were conducted surveys using SPSS WIN 18.0 program. Firstly, were mostly 40s, college graduates, Buddhists or had no religion, had housekeeping as occupation, had average household income, and most of them were healthy. In addition, descriptive statistics on their years of experience in golf, golf strokes, field, practice frequency, and practice hours were all above average. Secondly, significant correlations were suggested between experience in golf, golf strokes, field, practice frequency, silence during practice hours, and in the subjective happiness of negative correlation as a result of analysing the correlations between the factors. Thirdly, the field, practice frequency, and practice hours affected the subjective happiness.

• The Journal of the Korea Contents Association
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• v.10 no.9
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• pp.448-454
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• 2010

This study targeted adult golf-exercise participants and the purpose of this study was analyzing the effect of exercise-addiction among the participation rate factor in golf-exercise participants. To achieve the purpose of this study, the researcher chose 500 golf-exercise participants located in the D city area, who golf at indoor and outdoor driving ranges. A total of 456 questionnaires were used for the final study and each questionnaire consisted of questions including demographic variables. By using SPSS/PC+ Win 15.0 program, the primary data analysis were frequently analyzed to find out general aspects of golfers, exploratory cause analysis verifies the reliability and validity of the preliminary and factor analysis, ANCOVA. Through this research method and procedure, the following conclusion was drawn. First, depending on the frequency of participants in a round of golf exercise addiction is a difference. Second, golf participants' average score is the difference between the exercise addiction.

• Proceedings of the Korea Water Resources Association Conference
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• 2021.06a
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• pp.381-381
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• 2021

영산강 유역은 타수계에 비해 농경지 비율이 높으며, 영산강 하류에는 나주평야 등 논농사를 하고 있어 농업용수 위주의 물이용율이 높다. 또한 4대호(광주호, 장성호, 담양호, 나주호) 이외의 대규모 다목적댐이 없어 수자원 확보에 어려움이 있다. 섬진강 유역은 유역변경으로 대부분 타수계로 물 공급이 이루어져 하천유량 부족, 섬진강 하류 생태계 피해로 물문제가 지속되고 있다. 이러한 물문제를 해결하기 위해 물관리 일원화에 따른 물이용, 수량, 수질 등을 모두 고려한 효율적인 통합 물관리 방안이 제시되고 있다. 통합 물관리를 위해 유역 내 수자원 이용현황과 물 문제해결 등을 고려한 용도별 최적 물이용 계획 및 효율적인 물관리 운영방안이 중요시되고 있다. 이를 위해서는 지역의 여건 및 특수사항을 고려한 장래 물공급량 변화 및 과부족량에 대해 분석하는 것이 필요하다. 이에 본연구에서는 대상지역인 영산강·섬진강 유역 특성 및 물공급체계를 파악하고 이를 반영한 물수지 분석체계를 구축하여 유역 내 수자원 현황을 파악하고자 한다. 본 연구에서는 실제 물이용체계를 반영하고 용수계통에 따라 자기유역 내 또는 타수계에 대해 용도별 수요량에 따른 공급량, 부족량을 산정하여 그 적용성을 평가하고자 한다. 이를위해 1) 하천수는 유수와 저수로 구분하고 유수는 하천 취수시설의 실사용량을 유역단위 수요량으로 추정, 저수는 다목적댐은 계약량, 농업용저수지는 필요공급량을 개별시설의 수요량으로 설정하여 각각의 수원(저수/유수)에 대한 수요량 대비 공급량과 부족량을 분석하였다. 2) 댐과 저수지는 용수공급조정기준에 따라 공급량을 탄력적으로 적용하고 농업용저수지는 가뭄등급에 따라 하천유지용수를 고려하였다. 3) 주암본댐과 섬진강댐은 송정 수위관측지점의 유량 상황에 따라 환경대응용수를 고려하였다. 4) 주안본댐과 주암조절지댐의 연계 운영을 고려하였다. 물수지 분석 결과 검증을 위해 주요 지점의 관측유량과 물수지 분석을 통해 계산된 유량을 비교하여 적용성 분석을 진행한 결과 상관관계가 높게 분석되었다. 본 연구 결과를 바탕으로 영산강·섬진강 유역 내 효율적인 물관리 방안 수립에 활용될 수 있을 것으로 판단된다.