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배드민턴 주니어, 청소년 국가대표 선수의 정신력과 경쟁상태불안의 관계
오형석,김경엽 한국스포츠학회 2014 한국스포츠학회지 Vol.12 No.4
The purpose of this study, junior, youth badminton players chosen as a representative national exhaustive sampling selection criteria in accordance with the spirit and the competitive state anxiety and Spirit factors to investigate the correlation between a competitive analysis of the effects of anxiety and Junior and Youth Badminton training of national athletes and performance-enhancing mental training help with this to intends to provide the basic data. Methods of data analysis SPSS 20.0 and AMOS 18.0 program using the program confirmatory factor analysis and exploratory factor analysis, correlation analysis, multiple regression analysis, the results were derived. The subject of the 2013 Junior and Youth National badminton men chosen by 51 people, 49 people women, a total of 100 people were sampled in summer vocational training period, the main results are presented below. 1) Junior and Youth National Team player mentality of badminton (arousal control, attention control, positive energy) is a competitive state anxiety (state self-confidence) and positive appeared correlated. 2) The spirit(positive energy, regulate arousal level, attention control, attitude control) of male gender is a group of players was found to have positive effect on competitive state anxiety(anxiety body). 3) The spirit(positive energy, attention control) of players in accordance with the selection criteria was found to have positive effect on competitive state anxiety(state self -confidence).
무선네트워크 비행제어시스템을 탑재한 무인항공기의 시험개발
오형석,김병욱,이시훈,노원호,강승은,고상호 한국항공우주학회 2017 韓國航空宇宙學會誌 Vol.45 No.12
This paper presents a test development of a Fly-By-Wireless flight control system for a fixed-wing unmanned aerial vehicle (UAV). Fly-By-Wireless system (FBWLS) refers to a system that uses a wireless network instead of a wired network to connect sensors and actuators with a flight control computer (FCC), reducing considerable amount of wires. FBWLS enables to design a much lighter aircraft along with decreased maintenance time and cost. In this research we developed a Zigbee-based FWBLS UAV in which sensors (GPS and AHRS) are wirelessly connected via a FCC to aileron and elevator servo motors. In order to see the effect of time delay due to wireless signal on the flight stability of the UAV, several flight tests were conducted. From the tests, it was confirmed that the effect is minor by comparing the flight response of the FBWLS with the corresponding Fly-By-Wire system. 본 논문은 무선네트워크를 사용하는 비행제어시스템을 탑재한 고정익 무인항공기의 시험개발에 대해 소개한다. 무선네트워크를 기반으로 하는 항공기는 기존의 방식과 달리 센서와 구동기를 무선으로 연결하여 전선의 무게를 줄여 항공기를 경량화 할 수 있고, 이에 따라 기체 정비비용과 시간을 절약할 수 있다. 본 연구에서 사용된 무인항공기는 AHRS와 GPS, 엘리베이터와 에일러론을 구동하는 서보모터가 ZigBee 통신을 이용하여 FCC에 연결되었다. 또한 무선신호에 의한 지연이 비행안전성에 미치는 영향을 알아보고자 실내 및 비행시험을 수행하였으며, 유선비행제어시스템과의 결과 비교를 통해 이러한 영향은 매우 미미했음을 확인하였다.
라오스학생의 significant caries (SiC) index 조사 연구
오형석,조자원,유현준,권순성 대한예방치과·구강보건학회 2022 大韓口腔保健學會誌 Vol.46 No.1
Objective: This study aimed to investigate the characteristics of the high-risk group for dental caries among 12- and 15-year-old children in Laos. Methods: Oral health survey was conducted on 12-year-old (N=537) and 15-year-old (N=490) children in Laos. The oral examination data were listed from highest to highest based on the permanent caries experience index. Then the caries experience permanent index of the participants corresponding to the top third was calculated. In the final high-risk group, 179 and 163 children aged 12 and 15 years, respectively, were analyzed for the Significant Caries (SiC) Index. Results: The Decayed, Missing and Filled Teeth (DMFT) index of 12-year-old children in Laos was 1.59 (urban area 1.72, rural area 1.46), and the SiC index of the high-risk group for dental caries was 3.93 (urban area 4.01, rural area 3.85). DMFT index of the 15-year-old group was 2.04 (2.37 in urban areas, 1.74 in rural areas), and the SiC index of the high-risk group for dental caries was 5.17(5.90 in urban areas, 4.49 in rural areas). Conclusions: Children aged 12 and 15 in the high-risk group for dental caries in Laos showed a higher caries experience permanence index than the overall average in the high-risk group. Based on the outcome of the investigation that the high-risk group had a lot of experience with dental caries, it is thought that the priority dental caries prevention project for the high-risk group of dental caries should be carried out.