Influence of the Taekwondo Leader's Leadership on the Leader's Image and Trust

Hochul Shin J-INSTITUTE 2022 International Journal of Martial Arts Vol.7 No.2

Purpose: The purpose of this study is to explore the appropriate qualities of the Taekwondo Demon-stration Team leader, identify the effect of the leader's leadership style on the leader's image and trust, and provide the basic data for the research promoting the development of the Taekwondo Demonstra-tion Team. Method: As for the subjects of this study, 7 universities that operate the Taekwondo Demonstration Team were selected, 217 copies were collected by using the convenience sampling method from university students who are participating in the Demonstration Team. In response, 210 copies of data were analyzed except for 7, which had low reliability. Two hundred and ten copies of the collected data were analyzed by using SPSS 23.0. Frequency analysis was performed to examine and understand the general character-istics of the participants, and the exploratory factor analysis and factor-specific reliability(Cronbach's alpha) were calculated to verify the validity and reliability of the measurement tool. Results: A total of 29 questions were used, and the response form of the questionnaire was measured on a Likert 5-point scale. As illustrated in <Table 2>, the reliability of sub-factors (Cronbach'α) was cal-culated through the training and directive behavior of .944, democratic behavior .938, positive reward behavior .914, tyrannical behavior .936, social support behavior .881, respectively. Multiple regression analysis was performed on the effect of leader's image on the leader's trust, and the results are as illus-trated in <Table 7>. As for the results of multiple regression analysis performed on the effect of leader's image on the leader's trust, it turned out that leader's image had no statistically significant effect on the leader's trust. Conclusion: Multiple regression analysis was conducted on the effect of the leadership style of the Taekwondo Demonstration Team leader on the leader's image. As a result, it turned out that training and instruction had a positive(+) effect on the leader's image, and as a result of the multiple regression anal-ysis performed on the image of democratic behaviors of leaders, it turned out that democratic actions had a positive effect on the leader’s image.

The Effects of Taekwondo Breaking Athletes’ Judgment Recognition on the Game Stress

Hochul Shin J-INSTITUTE 2023 International Journal of Martial Arts Vol.8 No.-

Purpose: In this study, it is intended to examine how the athlete's perception of referee's judgment affects game stress from the point of view of Taekwondo breaking athletes. Method: The participants in this study were 421 students who were enrolled in a university that had a Taekwondo demonstration team. As for the data collected in the questionnaire in this study, SPSS 27.0 was used to conduct descriptive statistics and frequency analysis to confirm the demographic characteristics of the research participants, and exploratory factor analysis was conducted to verify the validity of the survey tool. Results: The correlation coefficients between multiple factors were found to be statistically significant, but the correlation coefficients for some factors were not statistically significant. As a result of verifying the reliability of the factors, fairness .934, promptness .905, consistency .917, reliability .919, game stress .901, referee stress .870, which exceed .70, the criteria suggested by Nunnally and Bernstein(1994), and hence, the reliability of the extracted factor may be seen as suitable. Conclusion: First, the correlation coefficient turned out to be statistically significant, but not statistically significant in the game stress factor. Second, as a result of regression analysis on the effect of university Taekwondo breaking athletes' referee decision recognition on game stress, it turned out that there was no statistically significant effect on fairness, promptness, consistency, and reliability. Third, as a result of regression analysis on the effect of referee judgment perception of university Taekwondo breaking athletes on referee stress, it turned out that there was no statistically significant effect on all factors of fairness, promptness, consistency, and reliability.

Labor Market Institutions and Wage-led Growth: A Panel Cointegration Approach

Hochul Shin 서울대학교 경제연구소 2019 Seoul journal of economics Vol.32 No.2

This study analyzes the long-term effect of labor market institutions, such as minimum wage and union density, on inequality, investment, growth, and consumption, by using data of the member countries of the Organization for Economic Co-operation and Development since the 1970s. Labor market institution variables are used to test arguments on wage-led growth theory. Panel cointegration approach was used to investigate the long-term effect of these variables. Results of panel cointegration test show that variables of labor market institutions are not robustly correlated to macroeconomic outcomes in the long run. This condition is not in accordance with the findings of the proponents and critics of wage-led growth. No robust evidence exists to show that increasing minimum wage and union density, which are representative policies for wage-led growth, are correlated to inequality, labor income share, consumption, investment, or growth in the long run. Estimation results of this study suggest that the empirical basis of support and criticism for wage-led growth theory is weak.

Relationship Between TAEKWONDO Demonstrators Athletic Commitment and the Psychological Happiness and Athletic Sustainability

Hochul Shin,Jongsoo Kim J-INSTITUTE 2021 International Journal of Martial Arts Vol.6 No.3

Purpose: Prior studies related to athletic commitment have been conducted on various sports players, but stud-ies on Taekwondo demonstrators are insufficient. Thus, it is deemed that measures should be prepared to expand the qualitative area of Taekwondo demonstration by exploring the appropriate level of athletic commitment. Ac-cordingly, the purpose of this study is to identify the effect of Taekwondo demonstration team members athletic commitment on psychological happiness and athletic sustainability and provide basic data for psychological re-search related to Taekwondo demonstration. Method: The data collection of this study was conducted for a total of seven days from 07/05/2021 to 07/11/2021. The research team fully explained the purpose and intent of the study to the leaders of college Taekwondo demonstration teams, sought their cooperation, and visited the training place or classroom to con-duct the survey. The research team explained the purpose of the study and required the subjects to participate in the survey. Results: A correlation analysis was conducted to find out the correlation among factors such as athletic com-mitment, psychological happiness, and athletic sustainability of members of college Taekwondo demonstration teams. The Pearson correlation coefficient shows that the lowest correlation was found between cognitive com-mitment and reinforcement(r=.439, p<.01) and the highest correlation emerged between behavioral commitment and tendency(r=.708, p<.01). Conclusion: First, the Taekwondo demonstration team s athletic commitment did not affect their psychological happiness. Second, multiple regression analyses were conducted on the effects of athletic commitment on the ten-dency of Taekwondo demonstrators, and the results showed that cognitive commitment and behavioral commit-ment had a positive impact on tendency on a statistically significant level. In addition, multiple regression anal-yses were conducted on the effects of reinforcement, and the results showed that cognitive commitment and be-havioral commitment had a positive effect on reinforcement at a statistically significant level. Furthermore, multi-ple regression analyses of the effects on possibility have shown that cognitive commitment, behavioral commit-ment have statistically significant levels and positive effects on athletic sustainability. Third, the psychological happiness of the Taekwondo demonstration team did not affect athletic sustainability.

The Effects of the Perception of TAEKWONDO Demonstration Team Activities on the Image of Centers and the Intention to Join Trainees

Hochul Shin J-INSTITUTE 2021 International Journal of Martial Arts Vol.6 No.2

Purpose: The promotion, program, facility, and environmental factors of Taekwondo centers affect the image of Taekwondo centers, and the image of Taekwondo centers affects the continuation of training and word-of-mouth intention. The program also showed that Taekwondo demonstration activities had an effect on the image of the centers, but the study was conducted on parents and there was a lack of contents on the effect of the demonstration activities on the trainees in addition to the management factors. Therefore, the purpose of this study is to investigate the effects of Taekwondo demonstration team activities showing various skills on the im-age of centers and the intention of general trainees to join the training Method: The participants of this study were 190 general trainees from 4th to 6th grade of elementary school who had been trained for at least one year at five Taekwondo centers operating a front-line demonstration team in Seoul and Northern Gyeonggi-do, and were sampled using a convenience sampling method among non-prob-ability sampling methods. Among the collected questionnaires, all 162 were judged to be reliable except for 28 data that were judged to be unreliable, and the analysis was conducted based on a total of 162 questionnaires. Results: A regression analysis of the effect of the perception of demonstration team activities on the image of centers(operation) showed that personality cultivation effect(p=0.000) has a positive(+) effect on the image of operations at a statistically significant level, with an influence of 0.420. In addition, the regression model shows p=0.000, F=9.636 and the regression analysis formula shows R2=0.236, which shows the explanatory power of 23.6% of the total variance. Conclusion: First, the perception of the demonstration team activities affects the painting image. Specifically, the effect of personality cultivation affects the operation and leadership, the effect of personality cultivation, physical effect, and technological development affect the expertise, and the effect of personality cultivation and technological development affect the social service. Second, the perception of the demonstration team activities affects the intention to join trainees. Specifically, the psychological effect and the personality cultivation effect affect the intention to join trainees. Third, the image of centers affects the intention to join trainees. Specifically, the social service affects the intention to join trainees.

The Effects of University TAEKWONDO Demonstration Team’s Self-Management on Exercise Commitment and Perceived Performance

Hochul Shin,김종수 J-INSTITUTE 2020 International Journal of Martial Arts Vol.5 No.2

Purpose: The purpose of this study is to investigate the relationship between self-management of college taekwondo demonstration team members and their exercise commitment and perceived athletic performance. This study is highly anticipated to provide fundamental data to enable psychological understanding of the exercise commitment found among college Taekwondo demonstration team members in a competition and improving performance through the positive role of self-management. Method: The population of college Taekwondo demonstration team members nationwide was selected as the subject of the study. 600 copies were collected using the convenience sampling method and 555 of the collected copies, excluding those with inconsistent or unfaithful responses, were used for the analysis. Frequency analysis was performed to examine the general characteristics of the research subject, and exploratory factor analysis and Cronbach' α coefficient, or an internal consistency test, were used to verify the validity and reliability of the re-search tool. In addition, correlation analysis and multiple regression analysis were performed to investigate the relationship among the variables of self-management, exercise commitment, and perceived performance with a significance level set to .05. Results: As a result of verifying each of the factors of self-management, exercise commitment, and perceived performance of Taekwondo demonstration team members through the Pearson correlation coefficient showed that all variables have a statistically significant correlation. The lowest correlation was found in body manage-ment and perceived performance(r=.213), whereas the highest correlation was found in cognitive commitment and behavioral commitment(r=.730). Conclusion: First, interpersonal management, training management, and mental management among the self-management factors of college Taekwondo demonstration team members were found to have a statistically sig-nificant effect on exercise commitment, though body management showed no statistically significant effect. Sec-ond, training management and mental management among the self-management factors of college Taekwondo demonstration team members were found to have a statistically significant effect on perceived performance, whereas no statistically significant effect was found from body management and interpersonal management. Third, among the factors of exercise commitment of college Taekwondo Demonstration team members across the nation, cognitive commitment was observed to have a statistically significant effect on perceived performance, whereas behavioral commitment showed no statistically significant effect.

Investigation on the Recognition of Referees on the Scoring Rules for TAEKWONDO Demonstration Competition

Hochul Shin J-INSTITUTE 2020 Kinesiology Vol.5 No.2

Purpose: This study is highly anticipated to reduce unfair judgment in Taekwondo demonstration games as a qualitative study done on the recognition, problems and development plans of Taekwondo breaking demon-stration competitions through research subjects composed of referees with experience in Taekwondo breaking demonstration competitions. Furthermore, if unified competition rules are applied regardless of the event or-ganizer, it can be used as basic data for establishing objective grounds for Taekwondo demonstration events as a sport. Method: This study used the purposeful sampling method, a non-probability sampling method, as a repre-sentative method of qualitative research and selected 5 people who have experience as a referee in Taekwondo breaking demonstration competitions. The study participants include 4 men and 1 woman who are in their 30s and 40s. They possess Taekwondo Grade 6 or 7, and 2 of them have 5 years or less referee experience and 3 had 6 years or more referee experience. After explaining the purpose of the study and the contents of the inter-views to the study participants, the participants were asked to respond through telephone recording in a stable atmosphere for the researcher to directly collect the data. The interviews were recorded using a call recording function of Samsung Galaxy S20 Ultra for about 40 minutes, and the recorded data were analyzed through a transcription process using an LG laptop. Results: Breaking demonstration competition referees perception of the competitions was found as follows; ‘characteristics of Taekwondo breaking demonstration competition , advantages , disadvantages , and injury prevention and emergency response. Breaking demonstration competition referees perception of the scoring of the competition was found as follows; ‘demonstration terminologies , evaluation methods , and referee qualifications.’ Breaking demonstration competition referees perception of the development plans of the com-petition was found as follows; ‘development potentials , need for scoring criteria , establishment of scoring terminology’, enhancement of referee expertise , and safety accidents.’ Conclusion: First, the perception of breaking demonstration competition referees toward the demonstration competitions was analyzed as the characteristics, advantages, disadvantages and emergency response of the breaking demonstration. Second, the perception of breaking demonstration competition referees toward the scoring was found to be demonstration terminologies, evaluation methods and referee qualifications. Third, the perception of breaking demonstration competition referees toward the development plan for breaking demon-stration competitions was observed to be development potentials, need for scoring criteria, establishment of scoring terminology, enhancement of referee expertise and safety accidents.

PILOT PLANT TEST OF PRETREATMENT PROCESS FOR LANDFILL GAS UTILIZATION

( Hochul Shin ),( Jinwon Park ) 한국폐기물자원순환학회 2002 APLAS Vol.2002 No.1

Landfill gas (LFG) consists of methane and carbon dioxide with numerous organic compounds such as aromatics, chlorinated compounds,and sulfurs. The LFG utilization as the energy source has become the highlight subject in terms of solving both the renewable energy usage and environmental pollution. In order to exploit the LFG effectively and minimize the side effects, it is crucial to eliminate the trace components in raw LFG In this paper, the removal characteristics of the pilot plant test using raw LFG were studied in Sudokwon landfill site in Korea. We used pretreatment process including cyclone-type dehydrator, compressor, and adsorption towers packed with molecular sieve and activated carbon. Total operation time was 373 hours and total amounts of LFG was about 5600 Nm³ on the operation conditions (flow rate: 1.5土0.1 m³/hr, operation pressure: 10土0.5 kgf/cm²). The relative humidity of pretreated LFG was 0.8-3.3%, and the moisture removal efficiency was above 98% during 373 hours. Aromatics and chlorinated compounds were completely adsorbed onto the activated carbon tower by 300 hours. When it passed by about 120 hours, 1% of hydrogen sulfide concentration was detected in the effluent stream. 90% of input concentration emitted at the operation time of 373 hours. This field test of LFG pretreatment process in pilot plant scale demonstrates the application to medium-Btu usage and high-Btu direct usage through other gas fuel mixing system.

Force Prediction Model for Robotic Surgery in Orthopedics

HoChul Shin,Yong-San Yoon 한국과학기술원 인간친화 복지 로봇 시스템 연구센터 2004 International Journal of Assistive Robotics and Me Vol.5 No.1

Total arthroplasty is one of the most active applications of robotic surgery in orthopedics. The main job of orthopedic surgical robot is bone cutting with milling tools. A reliable method for predicting milling forces may allow us to design more intelligent and effective systems. In this study, we have developed a prediction models for milling forces during the orthopedic surgery by expanding the orthogonal bone-cutting model. To verify the model, we milled fresh bovine bones with a medical round bur and measured cutting forces in various cutting conditions. The developed model can predict milling forces about cutting depth below 0.5㎜ with a feedrate 2~9.8㎜/s, and 0~10% mean error and 13~25% of standard deviation. This model can be applied as a control algorithm of orthopedic robotic surgery, and also as a safety checking system. The model can be interpreted as general design criteria for new robotic system.

Effects of Taekwondo Breaking Player s Self-Management on Stress and Performance

Hochul Shin,Youngnam Cha J-INSTITUTE 2022 International Journal of Martial Arts Vol.7 No.1

Purpose: This study is meaningful in analyzing in detail how the self-management of demon-stration members of college Taekwondo demonstration events affects their stress and perfor-mance. In addition, this is to provide basic data for follow-up studies that help improve performance and prescribe for exercise stress based on thorough self-management of Taekwondo demonstration team members. Method: For this study, a survey was conducted on college Taekwondo demonstration mem-bers for about 4 months. The purpose and intent of the study were fully explained to the coaches of each team, and consent was sought. This researcher and research assistant visited the training site of Taekwondo demonstration teams and conducted a survey. A survey was con-ducted after explaining the preparation method, purpose, and intent of the study to the participants who voluntarily participated in this study. Results: As a result of a regression analysis on the effect of self-management of college Taekwondo demonstration members on performance, it was found that body management, in-terpersonal management, training management, and mental management, which are sub-Factor s of self-management, were not statistically significant. In addition, the regression model shows a value of F from p<.001 to .325 and R²=.012 for the regression equation, showing 1.2% ex-planatory power of the total variance. Conclusion: As a result of examining the relationship between exercise stress and self-management of members of the college Taekwondo demonstration team, it was found that men-tal management had an effect on unfair behavior among sub-Factor s of exercise stress. For time constraints, physical and mental management had an effect. It was found that mental management had an effect on functional discontent and career concern. Second, it was found that all Factor s did not affect the effect of self-management of college Taekwondo demonstra-tion members on performance. Third, it was found that all Factor s did not affect the effect of the exercise stress of college Taekwondo demonstration members on their performance.