• Bulletin of the Society of Naval Architects of Korea
• /
• v.42 no.2 s.144
• /
• pp.26-40
• /
• 2005

• Proceedings of the Korean Institute of Navigation and Port Research Conference
• /
• 2017.11a
• /
• pp.238-240
• /
• 2017

파랑 중 선수파의 영향을 줄이기 위해 도입된 Axe Bow선형은 파랑 중 항해 시 선수부에 과도한 Spray현상이 발생한다. 이를 억제하고자 선수 부가물이 도입되었으나, 수치해석적 연구가 필요할 것으로 판단하였다. 선수 부가물은 Spray rail에서 착안하였으며, 구현이 쉽고 설계 파라미터를 제시 할 수 있는 Barge형상으로 적용하였다. 본 연구에서는 선수 부가물의 길이 변화에 따른 Axe Bow 선형의 Spray 억제를 수치해석적으로 고찰하였다.

• Journal of the Korea Convergence Society
• /
• v.12 no.9
• /
• pp.193-204
• /
• 2021

The purpose of this study was to find out the impact of leadership types on achievement goals and athletic burnouts by high school bowlers. The subjects were surveyed by 172 high school bowlers. The data analysis of this study was performed with descriptive statistics, reliability analysis, independent t-test, 1-way ANOVA, correlation analysis, and multiple regression analysis. The results are as follows. First, among the sub-factors of leadership behavior, male students had higher leadership behavior type(authoritative, democratic, social support, positive feedback) and achievement goal orientation(ego orientation) than female students. athletic burnout was higher for female students and higher grades.social support behavior and training instruction behavior had a static effect on achievement goal. Third, authoritative behavior had a static effect on athletic burnout. However, the raining instruction behavior had a negative effect on athletic burnout.

• Journal of Korean Orthopaedic Sports Medicine
• /
• v.7 no.2
• /
• pp.142-145
• /
• 2008

Forefoot injuries are common in runners or martial art athletes, but due to the anatomical stability, collateral ligament injury of the hallucal interphalangeal joint has been rarely reported. We report a college Taekwondo athlete with chronic varus instability of the hallucal interphalangeal joint due to chronic lateral collateral ligament rupture. The patient had been treated with lateral ligament reconstruction and achieved good clinical outcome.

• Journal of the Korean Society of Fisheries and Ocean Technology
• /
• v.40 no.4
• /
• pp.304-310
• /
• 2004

Resistance performance of small size fishing vessel is experimentally investigated to find out the effect of fore-body shape and trim for the better hull from development. The tests are performed for five different cases in the high speed circulating water channel(CWC). Wave patterns are observed to investigate the relation between the resistance performance and the wave characteristics.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.12 no.3
• /
• pp.1128-1135
• /
• 2011

The purpose of this study was to identify the effects of field athletes' self-management on their psychological happiness. The subjects of the study were 184 athletes (male=82, female=102) who participated in the 91th National Athletes Meeting. All statistical analyses and description methods were computed by SPSS window 18.0. The discriminant analysis was used to find effects of self-management on their psychological happiness, ANOVA and Multiple regression. The results of this study were as followings: Frist, there was not significant difference to The Relationship between social-demographical variables and self-management, their psychological happiness. Second, self-management had a significant effect on psychological happiness. Based on the results, Field athletes's self-management has a positive effect on their psychological happiness.

• Journal of the Society of Naval Architects of Korea
• /
• v.49 no.1
• /
• pp.6-13
• /
• 2012

As ocean resources in shallow water areas are being exhausted, deep sea development is becoming common these days. Therefore floating type offshore structures are more competitive than fixed type structures, and FPSO is the most popular one these days. FPSO's are generally operated in a specific region and positioned to meet mostly head or bow waves in order to reduce roll motions. However this makes these vessels more vulnerable to green water around the bow region, and therefore the bow shape must be properly designed to mitigate green water damage. In the present study, experimental results for three different FPSO bow shapes in regular head waves were analyzed and compared to each other. Also CFD computations were carried out as a sample validation case for the database built for CFD code validation.

• Journal of Ocean Engineering and Technology
• /
• v.23 no.5
• /
• pp.9-14
• /
• 2009

The green water on deck has many harmful effects on the vessel in rough seas such as damages to hull structures, damages to cargos, increase of the downtime, decrease of the stability, and so on. Floating Production Storage and Offloading vessels (FPSOs) are operated in a specific location and are normally positioned to meet mostly head or bow waves in order to reduce the roll motions. But this makes FPSOs more vulnerable to green water around the bow region therefore the bow shape should be properly designed to mitigate the green water damage. In this paper, experimental results in regular head waves for three kinds of bow shapes are compared and some design considerations are proposed, with the building a database for computational fluid dynamics (CFD) validation in mind.

• The Journal of the Korea Contents Association
• /
• v.13 no.1
• /
• pp.409-416
• /
• 2013

The purpose of the study was to provide policy implications based on the actual condition of athletes' experiences on sexual violence in sports. To achieve this purpose, all athletes except professionals, coaches, athlete's parents were targeted and finally a total of 2,041 respondents were selected. The main topics of this study were as follows. First, this study identified the actual condition of sexual harassment among athletes. Second, athlete's attitude on sexual violence was identified. Last, prevention of sexual violence was examined. This study will provide basic data to build up policies for the prevention of sexual violence. Therefore, it is important that solutions for the prevention of sexual violence must be multifaceted, including all stockholders.

• Journal of Korean Orthopaedic Sports Medicine
• /
• v.8 no.1
• /
• pp.46-50
• /
• 2009

Purpose: This study was designed to analyze? the chronic pain of adolescent Taekwondo athletes, to research the understanding about chronic pain of coaches and athletes, to? reduce the development of chronic pain. Materials and Methods: From March. 2006 to June 2007, 210 athletics and 12 coaches of elementary, middle and high school in Kwang-ju city were surveyed. They was evaluated by physical examination, simple radiographs and MRI. Results: In 210 athletics, 162(77.1%) athletes had chronic pain. 19(11.7%) athletes had over three regions of pain, 74(45.7%) athletes had two regions of pain, 69(42.6%) athletes had one region of pain. In 274 cases of 164 athletes, the most common region was foot and ankle(145 cases, 52.9%), followed by hand(47 cases, 17.2%) and knee(38 cases,13.9%), hip(25 cases, 9.1%), and lumbar area(19 cases, 6.9%) The chronic pain was classified by injury type. Contusion of foot was 103 cases(most common), sprain of ankles was 40cases, Contusion of hands and wrists was 28 cases, and so on. The etiologies of injury that causes the chronic pain were match injury in training that is most common, intensive exercise and match injury in competition. Conclusion: The chronic pain was common in adolescent Taekwondo athletes. The ankle and foot were the most common region of chronic pain and the match injury was the most common injury, caused the chronic pain. Although athletes had considerable mental stress about chronic pain, the treatment of chronic pain and rest were insufficient. Therefore the variable effort to prevent injury and to treatment injury must be considered importantly.