• Journal of Convergence for Information Technology
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• v.12 no.4
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• pp.166-176
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• 2022

The purpose of this study was to investigate the construct of Korean Version of Mental Toughness through Open-ended Questionnaire for soccer Players and coach. Data collection was inductively analyzed by distributing open questionnaires to 100 soccer players belonging to the Korean Football Association and 100 soccer coaches who participated in the training for obtaining a soccer coach's license. The resulting results are as follows. First, as a result of the inductive content analysis of korean version soccer players mental toughness, 11 factors were derived in the detailed area and 6 factors in the general area. Secondly, in the results on the mental toughness of Korean version soccer players according to soccer players and coaches, both players and coaches were found to be the highest factor, kkangdagu. I hope that the results of this study will be used as basic data for efforts to reduce the improving performance for soccer players and coaches.

• Journal of Fisheries and Marine Sciences Education
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• v.22 no.4
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• pp.566-575
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• 2010

The purpose of this study was to examine how school soccer league influenced the school life satisfaction of middle school student in an attempt to help improve their school life and facilitate the universalization of school soccer league. The subjects were 103 students participating in school soccer league at a boy's middle school in Busan and 148 non-participants at the same school as a comparison group. The findings of this study were as follows: 1. The students who participated in the school soccer league program expressed better satisfaction with school life than the other who didn't, and the gap between the two was statistically significant. 2. The students who participated in the school soccer league program, the students who showed higher participation frequency expressed better satisfaction with school life than the other who didn't, and the gap between the two was statistically significant. 3. The student who participated in the school soccer league program, the higher level students of soccer ability expressed better satisfaction with school life than the lower level student of that, and the gap between the two was statistically significant.

• Journal of Fisheries and Marine Sciences Education
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• v.26 no.3
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• pp.525-534
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• 2014

This study has examined the effect of after-school physical activity on body composition and health related fitness of middle school students. The duration of after-school physical activity training program of this study is 12 weeks, the training time in 1 hours warming-up 10 minutes, the skill training 45 minutes and cool down did in 5 minutes. Exercise frequency is 5 time per week. Height basketball class, soccer class, subject class showed statistically meaningful increase between group variance showed statistically meaningful. Weight basketball class, soccer class, showed statistically meaningful decrease. Muscle mass basketball class showed statistically meaningful increase, soccer class showed statistically meaningful decrease. Cardiopulmonary basketball class, soccer class, showed statistically meaningful decrease. Explosive muscular strength basketball class, soccer class, showed statistically meaningful decrease. subject class showed statistically meaningful increase, between group variance showed statistically meaningful. Flexibility basketball class showed statistically meaningful increase, soccer class. Muscular strength basketball class, soccer class, subject class showed not statistically meaningful different.

• 제어로봇시스템학회:학술대회논문집
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• 2000.10a
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• pp.520-520
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• 2000

In this paper, it used a soccer robot which needs the important Held of robot technology as the wheel type mobile robot. With the soccer robot, as for the especially important one, "strategy" "the orbit control of the robot", and "the efficiency of the robot" is given. Therefore, it paid attention to " the orbit control of the robot " and it controlled an orbit of the soccer robot using the PID control. the soccer robot using the PID control.

• 제어로봇시스템학회:학술대회논문집
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• 2000.10a
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• pp.253-253
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• 2000

Each robot plays a role of its own behavior in dynamic robot-soccer environment. One of the most necessary conditions to win a game is control of robot movement. In this paper we suggest a win strategy using Cellular Neural Network to set optimal path and cooperative behavior, which divides a soccer ground into grid-cell based ground and has robots move a next grid-cell along the optimal path to approach the moving target.

• Journal of the Institute of Electronics Engineers of Korea CI
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• v.38 no.2
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• pp.1-8
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• 2001

In this paper, we propose an algorithm which estimates the displacements and velocities of objects in the soccer field from the soccer image sequences. Assuming the time interval of an object movement is given, we transform the object positions into those in the soccer field model and compute the distance and the velocity. When four corresponding pairs of the feature points, such as the crossing points of the lines in the soccer field, exist and three of them are not on a line, we transform the object positions in the soccer image into those in the soccer field by using the perspective displacement field model. In addition, when the soccer image has less than four feature points, we first transform the object positions into those in the image which has more than four feature points, and then transform the positions into those in the soccer field again. To find the coordinate transformation between two images, we estimate the panning and zooming for consecutive images in the sequence. In the experimental results, we quantitatively evaluated the estimation accuracy by applying our algorithm to the synthetic. soccer image sequences generated by graphic tools, and applied it to the real soccer image sequences for broadcasting to show its usefulness.

• Korean Journal of Applied Biomechanics
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• v.24 no.1
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• pp.85-93
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• 2014

The purpose of this study was to investigate a relationship among Taekwondo, soccer and gymnastic athletes their balance ability and lower extremity muscle strength, muscle endurance and also whether these variables show differences by sports type. For this purpose, 10 Taekwondo athletes, 10 soccer athletes and 10 gymnastic athletes that is a high school in I area were selected and their balance ability, isokinetic muscle strength and muscle endurance were measured by using force platform (AMTI) and isokinetic measurement (HUMAC NORM). Then the following results were obtained by conducting pearson product-moment correlation analysis and one-way ANOVA. In case of both right and left foot one-leg standing with open-eyes, there was a relation between both knee extension maximal muscle strength of Taekwondo, soccer, gymnastic athletes and balance ability, and in case of right foot one-leg standing with open-eyes, there was a relation between that is right plantar flexion and dorsi flexion maximum muscle strength and muscle endurance of Taekwondo, soccer, gymnastic athletes and their balance ability. Furthermore, in case of left dorsi flexion maximum muscle strength, there were significant differences in order of Taekwondo, gymnastics and soccer, and for isokinetic plantar flexion maximum muscle endurance, both right and left showed significant differences in order of Taekwondo, gymnastic and soccer.

• Journal of Digital Convergence
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• v.15 no.7
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• pp.479-487
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• 2017

The purpose of this study was to identify the most influential soccer players by appling social network analysis. The subjects were the German national soccer team and the Korean national soccer team participated in the 2016 Brazil World Cup. The pass collected data provided by FIFA were analyzed by social network analysis using the Ucinet6 program and pass success rate. The results are as follows. First, the soccer player with a lot of passes had a high connection centrality in pass-through networks and high proximity. Second, the German national soccer team has appeared key players as Phillip Lahm and Kroos player, and a key player of the Korean national soccer team was Ki,S.Y. Third, the German national soccer team's quantitative indicator value of proximity center and pass success rate appeared higher than the Korean national soccer team's.

• Journal of the Korean Applied Science and Technology
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• v.38 no.4
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• pp.1156-1164
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• 2021

This study sought to provide basic data on the soccer shoe brand strategy method by verifying the effectiveness of the soccer shoe brand 3i model to derive the importance and implications of the brand 3i model. Therefore, the sample was selected for those who have purchased soccer shoes for the past three years, and 421 copies of the data were applied to the final analysis. Data processing performed frequency analysis, internal consistency, confirmatory factor analysis, correlation analysis, and structural equation model analysis, all of which utilized SPSS (ver. 21.0) and AMOS (ver. 20.0) programs. The conclusions of this study are as follows. First, soccer shoe brand 3i model had a significant influence on brand trust. Second, brand trust had a significant influence on consumer purchasing behavior. Third, soccer shoe brand 3i model had a significant influence on consumer purchasing behavior. Lastly, brand trust between soccer shoe brand 3i model and consumer purchasing behavior showed partial mediated effect.

• Journal of the Korean Applied Science and Technology
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• v.41 no.2
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• pp.406-412
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• 2024

In order to investigate trends in youth soccer research, this study selected 18 prior literature published in domestic KCI-registered journals related to youth soccer over a three-year period from 2021 to 2023 as research subjects. Previous research on youth soccer was analyzed by year, journal, research method, and subject, and the results are as follows. First, the number of papers published on topics related to youth soccer was the highest at 9 in 2021. Second, it was found that youth soccer-related research was conducted in various sports-related academic journals. Third, quantitative research methodology took up a higher proportion of 83% than qualitative research method. Fourth, studies targeting youth soccer players were the highest at 50%, followed by coaches and parents of youth players.