The Effect of Self-Management of Juvenile TAEKWONDO Breaking Athletes on Sports Competitive Anxiety

Sunjang Lee,김종수,박주식 J-INSTITUTE 2021 Kinesiology Vol.6 No.1

Purpose: The study was conducted for the purpose of analyzing the effects of self-management on sports competition anxiety for youth breaking athletes who belong to the national Taekwondo demonstration team and have participated in the defeat contest. In order to achieve the purpose of this study, a questionnaire was conducted on 312 youth breaking athletes who have participated in the national breaking competition and analyzed the collected data. Method: In the study, a frequency analysis(Frequencies) to determine the general characteristics of the study participants and a correlation analysis(Correlation analysis) to determine the influence relationship between the variables of the measurement tool using SPSS 26.0 were conducted with the data collected through the questionnaire. In addition, Multiple regression analysis was performed to analyze the effect of self-management on sports competition anxiety. All statistical significance levels were set to .05. Results: This study was conducted to verify how self-management of Taekwondo breaking athletes affects sports competition anxiety. The results are as follows. First, as a result of analyzing the differences in self-management and sports competition anxiety of Taekwondo-breaking athletes according to the gender of youth Taekwondo-breaking athletes, there was no statistically significant difference. Second, there was no statistically significant difference as a result of analyzing the differences in self-management and sports competition anxiety of Taekwondo-breaking athlets according to middle and high school of youth Taekwondo-breaking athletes. Third, there was no statistically significant difference as a result of analyzing the differences in self-management and sports competition anxiety of Taekwondo-breaking athletes according to the winning experience of youth Taekwondo-breaking athletes. Fourth, as a result of analyzing how the self-management of youth Taekwondo breaking athletes affects sports competition anxiety, statistically significant differences were found in some factors. Conclusion: In the study, it was found that the self-management of taekwondo breaking athletes affects sports competition anxiety in some factors. Based on the results of this study, subsequent studies require research on the relationship and influence of more diverse factors and development of self-management programs to lower competition anxiety, and attempts of qualitative research are needed.

The Effect of Sports Motivation of Middle School SOCCER Players on the Sports Goal Orientation

Sunjang Lee,Jongsoo Kim,Jusik Park J-INSTITUTE 2020 Kinesiology Vol.5 No.2

Purpose: The study was conducted to verify how sports motivations affect sports goal orientations for mid-dle school soccer players. In order to achieve the goal of this study, a survey was conducted on 338 middle school soccer players to analyze the collected data. The conclusions of the analysis are as follows. Method: In this study, the data collected through the questionnaire was analyzed using SPSS 26.0. Frequen-cy analysis was conducted to identify the demographic and statistical characteristics of the study participants, and the reliability coefficient(Cronbach α) was calculated to determine the stability, consistency, and predicta-bility of the measurement tools for each item. One-way ANOVA was conducted to find out how the demograph-ic variables of middle school soccer players differed in sports motivation and sports goal orientation. In addition, multiple regression analysis was conducted to verify how sports motivations of middle school soccer players affect their sports goal orientations. The significance level of all the statistics was set at .05. Result: First, the analysis of the differences in sports motivation according to the school year of middle school soccer players showed statistically significant differences in self-control and amotivation factors. Second, an analysis of the differences in sports motivation according to the athletic career of middle school soccer players showed statistically significant differences in intrinsic and extrinsic motivation and amotivation factors. Third, an analysis of the effect of middle school soccer players sports motivation on sports goal orien-tation showed that self-control was a factor in task orientation and that there were statistically significant dif-ferences in intrinsic and extrinsic motivations on the ego orientation. Suggestions: Suggestions for future studies based on the results of this study include the following. This study was conducted only for middle school students, so subsequent studies would be meaningful if they were conducted on high school and college students as well. And a study on the differences between teenagers, col-lege students, and regular soccer players will also be meaningful. It would also be meaningful if there were studies that identified not only sports motivation and sports goal orientation but also relationships with various variables and qualitative studies that could find in-depth causes.

A Study on the Verification of Competency Management Factors of College TAEKWONDO Athletes and Strategies for Improving Performance

Sunjang Lee,Jusik Park,Jongsoo Kim J-INSTITUTE 2021 International Journal of Martial Arts Vol.6 No.3

Purpose: The purpose of this study is, as a previous study to help prepare specific goals and plans for the uni-versity students of Taekwondo major, is to identify and analyze the major areas of interest and their extent of interest for the underclassmen university students in Taekwondo major. Method: To examine and understand the area of interest and the extent of interest of the university students of Taekwondo major, this study produced and conducted an open-ended survey questionnaire regarding religion, hobbies, Taekwondo major’s area of interest, and future hopes. As for the data collected based on the question-naires, the SPSS 26.0 program was used. The frequency analysis was performed to analyze the general character-istics of the study participants and the extent of interest of their area of interest, and the data collected via the open-ended questionnaire were subjected to the inductive content analysis. Results: First, as a result of the inductive content analysis performed of the extent of interest for the hobby ac-tivities of the university students of Taekwondo major, the hobby activities were structured into 18 sub-areas, and the 18 sub-areas were further classified into the 5 general areas of physical activity(206), media activity(54), so-cial group activity(37), literary activity(26), and others(6), respectively. In the general area, physical activi-ty(62.61%) turned out to have the largest rate, followed by media activity(16.41%), social group activity(11.25%), and liter-ary activity(7.9%), in terms of the extent of interest hobbies, respectively. Second, the first year and sec-ond year university students of Taekwondo major who analyzed the Taekwondo major’s area of interest for the extent of interest of the university students of Taekwondo major turned out to have demonstration being the largest with 42 people(45.3%) among the 3 areas of Taekwondo of Poomsae, Sparring, and Demonstration, with 35 people(36.8%) for Poomsae, and 17 people(17.9%) for Sparring. Conclusion: If the areas of interests of the underclassmen university students identified based on the results of this study were utilized as the basic data, it will be possible for the university students to present specific goals for their future career paths and occupations after graduation through their upperclassmen years.

Static Output Feedback Model Predictive Control for Wiener Models with Polytopic Uncertainty Descriptions

Sunjang Kim,Sangmoon Lee,Sangun Kim,Sangchul Won 제어로봇시스템학회 2003 제어로봇시스템학회 국제학술대회 논문집 Vol.2003 No.10

Differences in PROTECTION for Sports Im-agery Ability of High School Taekwondo Breaking Athletes

Jongsoo Kim,Sunjang Lee,Jusik Park J-INSTITUTE 2020 Protection Convergence Vol.5 No.2

Purpose: The study was conducted to verify the differences in sports imagery ability among high school students/taekwondo breading athletes participating in taekwondo breaking competitions across the country. In order to achieve the purpose of this research, 230 high school students/taekwondo breaking athletes who had participated in national-level taekwondo breaking competitions were surveyed and the collected data were an-alyzed. The conclusions of the analysis are as follows. Method: The study surveyed 230 high school taekwondo breaking athletes who participated in nationwide taekwondo breaking competitions. The survey was conducted online due to COVID-19. The collected data were analyzed using SPSS 26.0. Frequency analysis was conducted to identify the general characteristics of the study participants. T-test and one-way ANOVA were conducted to find out what the differences were in sports imagery ability among high school taekwondo breaking athletes. The significance level of all the statistics is set to .05. Result: First, as a result of verifying the differences in sports imagery ability according to the gender of high school breaking athletes who participated in taekwondo breaking competitions, statistically significant differences were found in the goal imagery factor. Second, as a result of verifying the differences in sports imagery ability according to the school year of high school breaking athletes who participated in taekwondo breaking competitions, statistically significant differences were found in the strategic imagery factor. Third, as a result of analyzing the differences in sports imagery ability according to the experience of demonstration training of high school breaking athletes who participated in taekwondo breaking competitions, statistically significant differences were found in the strategic imagery factor. Fourth, as a result of analyzing the differences in sports imagery ability according to the number of participation in breaking competitions of high school breaking athletes who participated in taekwondo breaking competitions, statistically significant differences were found in the strategic imagery factor and goal imagery factor. Fifth, as a result of analyzing the differences in sports imagery ability according to the experience of winning in competitions of high school breaking athletes who participated in taekwondo breaking competitions, statistically significant differences were found in the strategic imagery factor and goal imagery factor. Conclusion: As a result of analyzing the differences in sports psychological abilities of high school athletes who participated in the taekwondo competition, there was a statistically significant difference.

The Influence of Sports Confidence of High School TAEKWONDO Breaking Athletes on Exercise Continuation

김종수,박주식,Sunjang Lee J-INSTITUTE 2021 International Journal of Martial Arts Vol.6 No.1

Purpose: The study was conducted to verify how sports confidence affects the continuation of exercise for high school student breaking athletes participating in the national-scale Taekwondo breaking competition. In order to achieve the purpose of the study, a questionnaire was conducted on 364 high school student breaking athletes who have participated in a national Taekwondo breaking contest and analyzed the collected data. Method: In the study, the data collected through the questionnaire were analyzed using SPSS 26.0 and a Frequency analysis was performed to find out the general characteristics of the study participants. Correlation analysis was conducted to determine the influence relationship between the variables of the measurement tool. In addition, Multiple regression analysis was conducted to analyze the effect of sports confidence on the con-tinuation of exercise. All statistical significance levels were set to .05. Results: First, as a result of verifying the difference between sports confidence and exercise continuation ac-cording to the gender of high school breaking athletes who participated in the Taekwondo breaking contest, there were statistically significant differences in coach leadership of sports confidence, physical and mental preparation factor, and exercise friend factor in exercise continuation. Second, as a result of verifying the difference between sports confidence and exercise continuation according to grades of high school breaking athletes participating in the Taekwondo breaking contest, statistically significant differences were found in the factors of exercise interest in exercise continuation. On the contrary, there was no statistically significant difference in all factors of sports confidence. Third, as a result of verifying the difference between sports confidence and exercise persistence according to the winning experience of high school breaking athletes participating in the Taekwondo breaking contest, there were no statistically significant differences in all factors of sports confidence and exercise persistence. Conclusion: as a result of the study, the recent increase in the sports confidence of Taekwondo-breaking players was identified and the conclusion that the sports confidence of high-school Taekwondo-breaking players could have an effect on the continuation of the exercise was drawn. Based on this, if Taekwondo practitioners of various age groups, from adults to adolescents and adolescents to youths, participate in the breaking contest and find a way to continue their Taekwondo training, it is thought that it could be a meaningful study not only for the Taekwondo demonstration field but also for the overall development of Taekwondo.

A Study on the Investigation of the Presence of Potential Infected Tree in the PREVENTION of Pine Wilt Disease

Yeonghwan Jo,Sunjang Lee,박주식,Wonhyeon Lim J-INSTITUTE 2020 International Journal of Crisis & Safety Vol.5 No.2

Purpose: The methods of preventing and controlling pine wilt disease(PWD), currently used in Korea, include fumigation, incineration, and fragmentation of the infected tree, which shows exterior discoloration. However, there are potential infected trees that have a healthy appearance but is already running out of resin, which serves as a breeding ground for Monochamus alternatus, aka Japanese pine sawyer. Method: Therefore, in order to confirm the presence of potential infected trees in the affected area, the dam-age was divided into five grades, and potential infected trees were investigated through the process. Accordingly, the time sequential examination of the reduced pine resin and the coniferous discoloration in a total of 1,057 pine trees of kinds(Pines, Japanese black pines, Korean pines, Pinus rigida) was conducted to investigate the ex-istence of the potential infected trees in the 2 district of extreme damage in this study and among them 176 trees(16.7%) were selected as the potential infected trees. Results: The results of this study showed that there were usually 4 to 5 percent of potential infected trees right after the removal of infected trees and that the percentage gradually increased over time. In addition, 26 diagnos-tic kits and 29 microscopic examination of 32 samples confirmed Bursaphelenchus xylophilusas in the target trees. Conclusion: Therefore, it is considered necessary to concentrate on checking the expansion of the pine wilt by preventing the attracted egg laying of the vectors by searching the potential infected trees through the relatively easy-to-perform extraction of pine resin from the healthy trees in external appearance around the damaged with-ered trees. The cross-checking of the results of the diagnosis kit and microscopic examination confirmed the pres-ence of Monochamus alternatus in the potential infected trees with the 25 samples.

Development of Optimal Control System for Air Separation Unit

Daehyun Ji,Sangmoon Lee,Sangun Kim,Sunjang Kim,Sangchul Won 제어로봇시스템학회 2004 제어로봇시스템학회 국제학술대회 논문집 Vol.2004 No.8

동서양의 문화접변과 중국무술이 심리적 작용

변승진(SeungJin Byun),이선장(SunJang Lee) 한국무예학회 2015 무예연구 Vol.9 No.2

이 연구는 동양이 서양의 문화와 만나면서 가장 폐쇄적이라 할 수 있는 중국의 전통 무술 문화가 문화접변을 통하여 어떻게 변용되어 갔는지를 알아보기 위한 목적이었으며, 그에 따른 결과는 다음과 같이 도출되었다. 1840년 아편전쟁으로 중국의 문호가 개방되면서 서양문화의 전파가 가속화되었고 이 시기에 중국무술은 군대 무술의 퇴보와 더불어 부분적 해체가 시작되었다. 서양문화에 대한 저항으로 농민전쟁 및 농민운동을 통한 민간무술이 전면에 나타나지만 1900년 의화단 활동이 실패로 돌아가면서 실전적인 무술의 형태는 퇴보하였다. 서구 열강에 연속된 패배는 중국인들에게 신체를 단련해 야 한다는 인식이 필터로 작용하여 비공개성의 성격을 띠고 있던 중국의 전통무술도 체 육의 이름을 내걸고 보다 체계적으로 재해석되어 발전하기 시작하였다. 이후 중국무술 은 다시 명칭을 ‘우슈’로 통일하게 되어 재구성되기 시작하였고 문화접변의 심리적 작 용의 결과로 서양 경기문화의 수용을 선택한 그룹과 저항그룹으로 나누어져 우슈는 크게 우슈와 전통우슈로 나누어지게 되었다. 현재 경기우슈는 올림픽 진입을 위해 박차를 가하고 있고 전통우슈는 무술의 전통적 가치를 지키며 세계 속의 문화상품으로 발전해 나아가고 있다. The aim of this study is to find out how Chinese martial arts which might have been considered as the closest have been changed through the cultural contacts and its results are derived as follows: By Opium War in 1840, the Chinese door was opened and at the same time the diffusion of the Western culture was also accelerated. In this period, the Chinese martial arts were started to dismantle partially along with the retrogression of the military martial arts. On the other hand, the private martial arts appeared in front through the farmers' wars and farmers' movements as resistances against the Western culture but by the failure of the Boxer Rebellion in 1900, the form of the martial arts used in actual battles became to retrogress. Through their continuous losings in the wars against the Western powerful countries, their consciousness that they needed to train their bodies worked as the filter and so, the Chinese traditional martial arts whose characteristic is very closed was given with the name of sports, became re-interpreted more systematically and started to be developed. Since then, the Chinese martial arts has been called with the unified term as 'wushu', started to re-organize. As a result from their psychological effects by acculturation, they are divided into two groups; one who accepted the Western cultures and the other one who resisted against them and accordingly, wushu also became to be divided into traditional wushu and wushu just for competitions. At present, wushu for competitions is being spurred to be selected as a game in Olympics and traditional wushu is being developed as a world-wide cultural product by keeping their traditional value.