• Journal of Digital Convergence
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• v.14 no.5
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• pp.493-500
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• 2016

This study aims to verify the relationship between a motivational climate and self-management perceived by athletes. 195 male and 153 female athletes participated in this study. Firstly, reliability and validity are verified for questionnaires, and descriptive statistics, one way ANOVA, and regression analysis are used. The result of the correlation analysis says that all the factors have meaningful relations among them. The analysis on the effects of the motivational climate on self-management indicates that the mastery climate perceived by the athletes has affected statically the sub-factors of self-management such as mental management, training, management, personal relationship management, life management, health management, and intrinsic behavior control. However, the competitive climate didn't help self-management. Based on the study, it was suggested that through the mastery climate, a leader should make athletes manage and control themselves in terms of conquest strategies, self-assessment, problem-solving and decision-making skills, self-control, goal setting, efforts to strengthen oneself, and plan.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.13 no.10
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• pp.4445-4452
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• 2012

This study examined the relationship between an achievement goal orientation and self-management in track & field athletes' of physical education high schools. Moreover, we hypothesized that the achievement goal orientation and self-management would be differed by their gender, special field, and career. Participants were 229 athletes. They completed achievement goal orientation and self-management questionnaires independently. Results from each statistical method based on the research questions revealed that there was a statistical difference in the subject goal orientation(p<0.05). Gender had a significant effect on the interpersonal, mental strength, and the body management(p<0.05). The mental strength was only statistically affected by their special field. The results indicated that the achievement goal orientation and the self-management may affect performance of high school track & field athletes. Several limitations, implications and suggestions for the future study were discussed.

• Journal of Digital Convergence
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• v.15 no.11
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• pp.497-511
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• 2017

The purpose of this study was to explore players' perception and emotional reaction toward referee's judgment. The participants of this study were six players (three male and three female) in 2016 national team. The results of this study are as follows: First, the differences in referee judgement were dependant on referees' subjective view point, rapid judging capability, qualification and experience. Second, we found that the a referee's judgement less affected match's results. The countermeasures against the adverse referee judgment include excitement, appeal, flow interruption, thought conversion, and concentration. Third, there were many opinions that both the degree of influence of the referee's judgement and the countermeasures was such that athletes were "not affected". In conclusion, the major determinant of players' performance were game strategy and accuracy of skill although the referee's judgement affected player's emotional reaction both in positive and negative ways.

• Journal of the Korea Convergence Society
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• v.8 no.12
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• pp.369-378
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• 2017

This study is devoted to investigating participation motivations of billiard players who join games through open-ended questionnaires, and identify the difference of participation motivations in the game according to age and experience. Thus, 696 original data on participation motivations was obtained from 267 billiard players in Gyeonggi-do based on open-ended questionnaires. Results from inductive analysis are as follows. First, their participation motivations included 10 general sectors such as interests, objective achievement motive, competition, interpersonal relationship, mental health, job, gambling, sport competence, suggestion by others, and university admission. Second, enjoyment showed the highest percents among participation motivations according to participants' age. Third, interest showed the highest percents among participation motivations in less than five years of their experiences. Objective achievement motive was the highest portion for more than five years. These outcomes will be used as a basic data to understand the relationship of billiard players who participate in the game and further create better billiard game culture.

• Proceedings of the Korea Contents Association Conference
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• 2006.11a
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• pp.152-155
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• 2006

The purposes of this study were to examine the influence of competitive state anxiety on outcome of games, therefore furnish practical information on sports coach. The Subjects of this study were sampled 200 bowling athletes using the stratified cluster random sampling. The data collected questionnaire designed for this study were consisted of Competitive State Anxiety Inventory-2: CSAI-2 of Martens(1990). Statistics employed in this study to data analysis was regression analysis. Based on the result of the study, the following conclusions appear warranted: 1. Competitive state anxiety of bowling athletes were influence on result ranking. 2. Competitive state anxiety of bowling athletes were influence on average score.

• Korean Journal of Applied Biomechanics
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• v.18 no.1
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• pp.129-135
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• 2008

This research was examined the effect of Backward Walk on ground reaction force and we achieved it by using ground reaction force machine during the Backward Walk activity with Latin and Rumba dance. We find that it was significant difference of vertical(Fz) ground reaction force of right foot in touchdown and toe-off and vertical(Fz), horizontal(Fx), front-rear(Fy) ground reaction force of left foot. There was not significant differences in vertical ground reaction force between superior athlete and unskilled athlete, but there was a significant difference in left foot. Through this, we know that the sports capability of left foot which has been developed through the training is better in superior athlete group. Therefore understanding of difference in ground reaction force and repeated training can help the unskilled athlete and beginner to accomplish the accurate movement.

• Journal of the Society of Naval Architects of Korea
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• v.37 no.1
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• pp.99-110
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• 2000

The damages due to wave impact loads are largely affected by impact pressure impulse and impact load area. The objective of this study is, as the third step, to perform dynamic structural analysis of bow flare structure of 300,000 DWT VLCC using LS/DYNA3D code, and to verify its dynamic structural behaviors. The impact load areas of stiffener space $1.5s{\times}1.5s$ and $2.5s{\times}2.5s$ are applied to bow flare structure part with relatively flexible stiffeners, and with stiff members such as stringers, webs etc., respectively, under the wave impact load with peak height 6.5MPa, tail 1.0MPa, and duration time 5.0msec. Through the dynamic structural analysis in this study, it might be thought that the structural strength of bow flare structure is generally sufficient for these wave impact load and areas, except that large damages were found at bow flare structure area with flexible wide span stiffeners.

• The Journal of the Korea Contents Association
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• v.10 no.8
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• pp.392-397
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• 2010

The purpose of this study was to examine the effects of self management and mental power on athletic performance. To attain the goal of the study some athletics of D city physical education middle school, high school, University in D city. Then, using the physical education middle and high school were complete collection, and University were random sampling method, finally drew out and analyzed 353 athletics in total. Data collected through a questionnaire designed for this study consist of fixed alternative choice response to items constructed to represent the operational definition for each variable. Statistics employed for data analysis was correlation and regression. Based upon the results of the study, the following conclusions appear warranted: 1. Self management influence on athletic performance. 2. Mental power influence on athletic performance.

• Journal of the Korean Society of Marine Environment & Safety
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• v.22 no.2
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• pp.246-252
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• 2016

In this study, conceptual design of the fore-body hull form of catamaran type dredging vessel was performed that can effectively remove the contaminated sediments in coastal seabed. The hull form was simpled for the easy hull construction and the resistance performance was investigated to find out the effect of hull form parameters between variation of waterline and angle of entrance, etc. The relation between resistance performance and characteristics of free surface flows according to variation of bow forms was investigated by model testing in the circulating water channel and using Ansys CFX. The improvement of ship resistance performance to the wave resistance decrease due to improved wave pattern has been verified according to move the stem and the volume of the shoulder to the fore part of the vessel.

• The Journal of the Korea Contents Association
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• v.16 no.9
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• pp.211-224
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• 2016

The purpose of this study were to devise prerequisite learning reminding model to elementary mathematics classes and actually apply it to fifth graders in experimental lessons, thus investigating their effects on mathematics academic achievement and self-efficacy. the study conducted a pre and post test to measure academic achievement and self-efficacy on the experiment and control group. the finding were as follows. First, the study found significant differences in mathematics academic achievement between the experiment and control group. mathematics lessons based on the prerequisite learning reminding model resulted in no significant differences among the upper and lower level groups. Secondly, the study analyzed the effects of prerequisite learning reminding model on the self-efficacy and found significant differences in self-efficacy between the experiment and control group. While there were no differences in self-confidence and preference for task difficulty among the subarea of self-efficacy, it had positive differences effect on self-regulation efficacy.