• The Journal of the Korea Contents Association
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• v.11 no.9
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• pp.469-484
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• 2011

The purpose of this study was to examine the effect of arousal control training conjugated heart rate biofeedback for national substitute three archery players. The arousal control training programs was developed on previous researches and 3 archery experts and 1 sport psychologist had meetings. The training programs contained as orientation, breathing regulation, progressive relaxation technique, heart rate biofeedback, cognitive restructuring, routine and consisted of 24 weeks. XCOACH was utilized as heart rate biofeedback instrument. The effects was examined on competitive state anxiety inventory-2, archery score and ranking, observation, interviews and self assessment. As the results, the score of subfactor was improved on somatic state anxiety, cognitive state anxiety and self-confidence. As the results of observation, interviews and self assessment, the ability of arousal control was enhanced by using effective psychological skills conjugated heart rate biofeedback.

• Journal of the korean Society of Automotive Engineers
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• v.24 no.5
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• pp.98-103
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• 2002

이제 카트 정렬과 휠 셋업에 필요한 최적의 변수들을 알아보았다. 실제 세팅은 위에서 언급한 내용 이외에도 많은 것들을 고려하여야 한다. 타이어 접지력의 세팅은 경기장, 날씨, 제품의 불 균일성 등을 고려하여 야 한다. 즉, 어떤 경기장은 코너의 반경이 다른 경기 장 보다 크며 어떤 경기장은 코너가 매우 많기도 하여 세팅을 상황에 맞게 하여야 하는 것이다. 각각의 변수를 세팅할 경우는 중간 값을 취하는 것이 바람직하여 이 중간 값을 취하는 것이 바람직하며 이 중간 값을 각각의 경기장의 특성에 맞추어 변화시키면 되는 것이다. 예를 들면, 접지력이 작게 발생되는 경기장(혹은 매우 추운날씨) 에서는 캐스터를 코기 하여 초기 회전 발생이 용이하게 할 수도 있다. 또한 토우인 값을 크게 하여 타이어가 마찰을 더욱 많이 발생하여 타이어의 온도가 급격히 상승하여 원하는 접지력의 수준에 용이하게 도달할 수 있게 하는 것이다. 그러나 이러한 세팅은 다른 핸들링 문제를 야기할 수 있다는 것을 이해하여야 하며 이러한 문제를 해결하는 또 다른 노력이 필요하게 되는 것이다. 가장 중요한 것은 후륜 내측으로부터는 조종 성능을 향상시키는데 필요한 접지력을 거의 기대하지 못한다는 것이며 마찰이 적게 발생하여 손쉽게 동력 손실을 초래하고 있다는 것이다. 그러므로 회전을 할 경우에도 속도를 낮추어서는 안되며 이렇게 하이야 핸들링이 매우 용이하게 되는 것이다. 그러나 위의 설명에서도 보았듯이 일부 세팅을 변경하면 여러 곳이 그 효과가 나타난다. 예를 들어 후륜의 간격을 변화시키면 카트에서 무게이동 뿐만 아니라 회전 시에 가속이나 감속에 의한 회전 토크의 효과도 달라지게 된다. 특정한 세팅의 변화가 어떻게 작용할 것이라는 확신을 가지고 있다고 할지라도 세팅에서 가장 중요한 것은 주행 기록이다. 여기서 설명되어진 많은 내용이 주행 기록을 향상시키기를 바라는 바이다.간이 육색과 총육색소 함량에는 영향을 미치지 않는 것으로 나타났다. 관능적 특성평가 중 육색과 육즙참출은 대조구와 비교하여 CLA급여 처리구가 유의적인 차이가 없었으나, 근내지방 축적 정도와 전체적인 기호성은 대조구에 비하여 CLA 급여 처리구가 유의적으로 높은 평가를 받았다(p<0.05). 간격은 술 후 1년 후까지도 지속적으로 감소하는 경향을 보였다. 따라서 이 기간동안에는 추적관찰이 필요한 것으로 생각된다.경미하게 나타났으며, 이는 2% 흥국 첨가식이의 섭취로 인한 bromobenzene 대사 및 유해산소 해독의 촉진에 기인되기 때문일 것으로 생각된다.다.과 및 지질과산화억제효과의 순과 일치하였다. 총 flavonoid 함량은 DPPH 라디칼 제거효과에 대한 $IC_{50}$/ 값과 높은 상관관계(r=-0.9924, p<0.01)를 나타내었다.이 우수한 심근보호 효과를 나타내나, 허혈시간이 2시간을 초과하면 심근의 혈역학적 기능과 미세구조의 변화는 중등도의 저온(22∼24$^{\circ}C$)에서 유의하게 악화되었다. 이 같은 결과로 볼 때 심근 허혈시간이 2시간을 초과한다면 심근 온도를 낮추어야 할 것으로 판단된다. 7.2, with 64.0% of office workers having an average level between 6- and 9. The degree of stress was higher for females than males, for unmarried salaried and hot-tempered persons. Those not doing exercise were subject to the highest levels of stress, and those a having sufficient sleep were found to be subject to less stress.

• The Journal of the Korea Contents Association
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• v.8 no.7
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• pp.224-232
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• 2008

Sport industry creates value-added by production and distribution of product or service related with sports or sports. Professional sports will lead to major area of sport service industry in the future. The purpose of study is to analyze financial condition and management performance by using financial statement(2005-2007) of korean professional soccer citizen teams. The analysis of financial condition and management performance is executed by financial ratio analysis method. The content of this study involve comparison with standardization ratio and financial ratios among professional soccer citizen teams. The results of this study are as follows. First, liquidity ratio measured by current ratio and quick ratio was high with compared to standardization ratio. Second, leverage ratio measured by debt ratio was very high. Third, activity ratio was good condition. Finally, profitability ratio was very low having minus ratio generally.

• The Korean Journal of Applied Statistics
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• v.28 no.6
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• pp.1133-1146
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• 2015

The Horse race industry has the largest proportion of the domestic legal gambling industry. However, there is limited statistical analysis on horse races versus other sports. We propose prediction models for winning horses in horse races using data mining techniques such as logistic regression, linear regression, and random forest. Horse races data are from the Korea Racing Authority and we use horse racing reports, information of racehorses, jockeys, and horse trainers. We consider two models based on ranks and time records. The analysis results show that prediction of ranks is affected by information on racehorses, number of wins of racehorses and jockeys. We place wagers for the last month of races based on our prediction models that produce serious profits.

• Journal of Korea Multimedia Society
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• v.10 no.8
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• pp.1017-1028
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• 2007

In this paper we propose an effective method to represent, store, and retrieve video streams efficiently from a video database. We extract features from each video frame, normalize the feature values, and represent them as values in the range [0,1]. In this way a video frame with f features can be represented by a point in the f-dimensional space $[0,1]^f$, and thus the video stream is represented by a trail of points in the multidimensional space. The video stream is partitioned into video segments based on camera shots, each of which is represented by a trend vector which encapsulates the moving trend of points in a segment. The video stream query is processed depending on the comparison of those trend vectors. We examine our method using a collection of video streams that are composed of sports, news, documentary, and educational videos. Experimental results show that our trend vector representation reduces a reconstruction error remarkably (average 37%) and the retrieval using a trend vector achieves the high precision (average 2.1 times) while maintaining the similar response time and recall rate as existing methods.

• Journal of Information Technology Application
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• v.3 no.1
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• pp.1-21
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• 2001

The explosive growth of the Internet and the increasing popularity of the World Wide Web have generated significant interest in the development of electronic commerce in a global online marketplace. The rapid adoption of the Internet as a commercial medium is rapidly expanding the necessity of Web advertisement as a new communication channel. if proper Web advertisement could be suggested to the right user, then effectiveness of Web advertisement will be raised and it will help company to earn more profit. So, this article describes a personalized advertisement technique as a part of intelligent customer services for an electronic newspaper provide. Based on customers history of navigation on the electronic newspapers pages, which are divided into several sections such as politics, economics, sports, culture, and so on, appropriate advertisements (especially, banner ads) are chosen and displayed with the aid of machine learning techniques, when customers visit to the site. To verify feasibility of the technique, an application will be made to one of the most popular e-newspaper publishing company in Korea.

• The Journal of Bigdata
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• v.7 no.1
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• pp.49-61
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• 2022

In sports, the proportion of data analysis in team management such as team strategy planning and marketing is increasing. In KBO(Korea Baseball Organization) league, in particular, plans such as recruiting players and fostering players are established to devise team strategies for the next year, such as FA and trade, at the end of a season. For these reasons, it is very important to predict players' performance for the next year. In this study, the target was limited to only the batter and tried to find out how to predict whether the performance of the next year will improve. As a standard record for rising and falling, OPS(On-Base Plus Slugging), which is easy to calculate and has a high relationship with team score, was used. In this study, 40 years of regular season data from 1982 to 2021 were used as data, and 11 machine learning classification models were used as experimental methods. Predicting the rise and fall of OPS, RBF SVM, Neural Net, Gaussian Process, and AdaBoost were more accurate than other classification models, and age did not significantly affect accuracy.

• Journal of Industrial Convergence
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• v.21 no.10
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• pp.47-56
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• 2023

The purpose of this study was to explore educational awareness and meaning by applying an role-playing game (RPG) type class based on constructivism in physical education class in middle school. Regarding the research method, data collection was conducted through in-depth interviews, observations, and related documents, and data analysis was performed using case record analysis, inductive category analysis method, and case extraction process. Results of the study First, in terms of teachers' perceptions, there are both positive and negative aspects of teachers' perceptions of middle school physical education classes using the role-playing game (RPG) format. Second, in terms of educational meaning, the educational meaning of middle school physical education classes using the role-playing game (RPG) format emphasizes the need for a systematic lesson plan and sufficient support system. In conclusion, positive attitudes toward physical education as well as educational implications can be formed, and the basic foundation of the constructivist physical education class method and its preparation are thought to be of greater significance than anything else.

• Journal of Korean Orthopaedic Sports Medicine
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• v.7 no.1
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• pp.33-36
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• 2008

Purpose: The purpose of this study was to evaluate the mechanism of injury in the anterior cruciate ligament tears sustained in participation in soccer. Materials and methods: 50 patients whose knees were injured during playing soccer were enrolled in this study. The mean age was 27 years old, 47 were male and 3 female. 15 of them were either professional or amateur soccer players, the rest were non-professional. The injury mechanism was investigated by evaluation of the medical records or by telephone interview. Results: The injury mechanism involved contact injuries in 17 patients and non-contact in 33. 41 patients were bearing weight on the involved side at the time of injury, and 9 patients were not. In cases of contact injury, 9 of the 17 patients had sustained a valgus force to the knee, and 5 patients had varus force, 11 patients had their foot planted, and 6 did not. Among those patients with a planted foot, 3 patients were injured by the rotation of the thigh, 1 patient was injured by hyperextension, and there were no deceleration mechanism injuries. In non-contact injuries, 30 out of 33 patients had their foot planted at time of injury and only 3 patients did not. Of these 30 patients, 16 were injured by the rotation of thigh, 6 sustained a varus force on the knee joint and 5 had a valgus force, 5 were injured by hyperextension, and 2 by deceleration. 3 patients, who did not have their foot planted, were injured while kicking with the involved leg. Conclusions: For soccer players in this series, the most common mechanisms resulting in anterior cruciate ligament tears were non-contact, most often by rotation of the torso over a planted foot. In contact injuries, the most common mechanism was the application of valgus force by tackle.

• Journal of Korean Orthopaedic Sports Medicine
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• v.8 no.1
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• pp.33-38
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• 2009

Purpose: We wanted to report the clinical characteristics and arthroscopic findings of radial tear in medial meniscus posterior horn insertion, commonly occurs in patient over middle age with documentary review. Materials and Methods: Retrograde study using hospital records was done to 40 cases in 40 patients who visited our hospital and had been performed knee arthroscopic surgery due to medial meniscus posterior horn insertion tear between January, 2005 to April, 2007. Seven cases were male and 33 cases were female with the mean age of 61 (range, 47-80). Trauma history, stage of arthritis, period between pain and operation, MRI findings, clinical symptoms and operation methods were evaluated. Results : Six cases had trauma history while 34 cases didn't. In simple x-ray, using Kellgren-Lawrence classification, 31 cases were between stage 0 and II while 9 cases were stage III. In arthroscopic exam, there were 17 cases of Outerbridge grade IV, 4 cases of grade III, 9 cases of grade II, 9 cases of grade I. The mean duration of pain was 5.3 months. In MRI, at least one finding of cleft in axial or coronal view or ghost sign in sagittal view was found in all cases. The shape of meniscus tears were blunt in 18 cases, transverse in 12 and degenerative tear in 10. Subtotal meniscectomy was performed in 16 cases, partial meniscectomy in 10 cases and meniscal repair in 14 cases. Conclusion : Medial meniscus posterior horn insertion tear occurs in patients over middle age is rarely related to trauma history but causes painful mechanical symptom and usually accompany arthritis. Meniscectomy can be done for the treatment but repair can be considered is some cases. Further study on the treatment result will be needed.