http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : 張甲錫 (검색결과 71 건)
- 무료
- 기관 내 무료
- 유료
-
-
장갑석,이동준,김상원 한국체육대학교 2001 論文集 Vol.24 No.-
본 연구의 목적은 사격선수들의 경기성적에 따른 사격기술능력을 비교 연구하는데 있다. 연구대상은 2001년 5월 대학교와 고등학교 재학 중인 남자 공기소총사격선수로 선정하였다. 피험자를 대상으로 하여 2001년에 있었던 전국대회에서 경기성적에 따라 우수집단(54명), 비우수집단(64명)으로 구분하였다. 사격기술능력을 검사하기 위해 SCATT training system(러시아)이라는 장비를 이용하여 측정하였다. 통계방법은 기술통계와 t-test를 실시 하였다. 이상과 같은 연구절차와 방법을 토대로 얻어진 연구의 결과는 다음과 같다. 첫째,조준시간은 우수집단이 비우수 집단에 비해 높게 나타났다(p<.05). 둘째,10.0점 명중률은 우수집단이 비우수 집단에 비해 높게 나타났다(p<.001). 셋째,이격거리는 우수집단이 비우수 집단에 비해 낮게 나타났다(p<.01). 넷째,좌우편차는 우수집단이 비우수 집단에 비해 낮게 나타났다(p<.001). 다섯째,상하편차는 우수집단이 비우수 집단에 비해 낮게 나타났다(p>.05). The purpose of this study was to investigate the comparison of shooting skill ability of shooting athletes with score. Subjects were high school and university shooting athletes(high score group(HG) : 45samples, low score group(LG) : 64samples). Analysis of data was conducted using frequency analysis, t-test. Results of this study were as follows, First, the shot time of HG was significantly high as LG(p<.05) Second, the steadiness in 10.0 of HG was significantly high as LG(p<.001). Third, the aiming length of HG was significantly low as LG(p<.01). Fourth, the aiming length X of HG was significantly low as LG(p<.001). Fifth, the aiming length Y of HG was no significantly low as LG(p>.05).
-
-
대용량 초정밀 서비스 실현을 위한 무선 액세스 기술 동향
장갑석,고영조,김일규,K. Chang,Y.J. Ko,I.G. Kim 한국전자통신연구원 2024 전자통신동향분석 Vol.39 No.1
The advent of 6G networks, anticipated around 2030, will lead to the seamless convergence of high-capacity ultrareliable communications with precision sensing. This convergence will revolutionize wireless communications and enable applications such as autonomous and precise manufacturing even in vulnerable radio environments and delivering immersive extended reality experiences to passengers on high-speed trains. We present technological trends and standardization efforts toward the development of the key wireless access elements to meet the demands of this upcoming futuristic era.
-
Replica Correlation-Based Synchronization with Low Complexity and Frequency Offset Immunity
장갑석,방승찬,김훈 한국전자통신연구원 2013 ETRI Journal Vol.35 No.5
This paper investigates the multifarious nature of the long-term evolution (LTE) scheme and that of the modified LTE scheme for symbol timing synchronization (STS). This investigation allows us to propose a new replica correlation-based STS scheme to overcome the inherent weaknesses of the other two schemes. The proposed STS signal combines a gold sequence and a half sine wave in the time domain, whereas conventional STS signals specify either binary sequences or complex sequences in the time domain or in the frequency domain. In the proposed scheme, a sufficient correlation property is realized by the gold sequence, and robustness against the frequency offset (FO) is achieved through the sine wave. Compared to the existing LTE-related schemes, the proposed scheme can better achieve immunity to FO and reduction in detector complexity, as well as a low peak-toaverage power ratio and a low detection error rate. Performance evaluations through analysis and simulation are provided in the paper to demonstrate these attributes.
-
장갑석 韓國體育大學校 1994 論文集 Vol.17 No.-
1. There are a little deference in BIT Index between business team shooters and collegian ones. The former shooters are superior to the latter in BIT Index. 2. There are some difference in OET Index between two group, and the business team shooters are superior to the collegian in the index. Both groups should make up for the index. 3. There is no great difference in BIT Index of two groups. However since both group leave something to be desired all of them should try to advance still more. 4. There is no difference in OIT Index of two groups. However both group should improve because they take a potential possibility to make an error. 5. As far as NAR Index is concerned, there is great difference between both group. The business team shooters are inferior to the collegian in the index. Therefore, especially, the former should make good. 6. Both groups expressed a negative reaction in NAR Index and the intensity of business team shooters was more serious. At the result, there are some difference in attention concentration between two groups, and all of them leave something to be desired partly or entirely. It may cause great difference between exercise records and competition ones. If we concentrate on the train for attention concentration the records' difference will be greatly decreased, I believe.
-
장갑석,고영조,김일규,Chang, K.,Ko, Y.J.,Kim, I.G. 한국전자통신연구원 2020 전자통신동향분석 Vol.35 No.5
The 6G mobile communication system will become a backbone infrastructure around 2030 for the future digital world by providing distinctive services such as five-sense holograms, ultra-high reliability/low-latency, ultra-high-precision positioning, ultra-massive connectivity, and gigabit-per-second data rate for aerial and maritime terminals. The recent remarkable advances in machine learning (ML) technology have recognized its efficiency in wireless networking fields such as resource management and cell-configuration optimization. Further innovation in ML is expected to play an important role in solving new problems arising from 6G network management and service delivery. In contrast, an approach to apply ML to a physical-layer (PHY) target tackles the basic problems in radio links, such as overcoming signal distortion and interference. This paper reviews the methodologies of ML-based PHY, relevant industrial trends, and candiate technologies, including future research directions and standardization impacts.
-
-
-
테니스 그라운드 스트로크(Ground Stroke) 동작의 운동학적 분석
장갑석,김석환,류지선 韓國體育大學校 1991 論文集 Vol.14 No.-
The purpose of this study was to investigate kinematic factors of fore and back-hand stroke in tennis ground stroke to provid tennis players and their instructors with the basic data. Data on Kinematic factors were obtained using 16mm high speed camera at 64frames per second. Two skilled male college tennis players and two unskilled male collegians were selected to make and experiment. The analysis results were as follows ; 1. In case of the anterior-posterior displacement of the racket center, skilled players were larger than unskilled players during the back swing of forehand stroke however, unskilled players were larger than skilled players during the forward swing. Also, Skilled players were larger than unskilled players in the whole phase during the back hand stroke. In the anterior-posterior difference of each stroke, forehand stroke was larger than backhand stroke during the back and follow through however, backhand stroke was larger than forehand stroke during the forward swing. 2. In case of the time elapsed, skilled players were faster than unskilled players in the whole phase during the forehand backhand stroke. In the time elapsed of each stroke, backhand stroke was faster than forehand stroke during the backswing however, forehand stroke was faster than backhand stroke during the forwardswing and follow through 3. In case of the racket velocity before and after impact, skilled players were larger than unskilled players during the fore and back stroke. In the racket velocity of each stroke, forehand stroke was larger than backhand stroke during the pre impact however, backhand stroke was larger than forehand stroke during the post impact. 4. In case of the ball velocity, skilled players were larger than unskilled players during the forehand and backhand stroke also, forehand stroke was larger than back hand stroke. 5. In case of the impact angle in the horizontal, skilled players were smaller than unskilled players during the forehand, backhand stroke also, forehand stroke was smaller than backhand stroke. In case of the angles between ball direction and racket swing, skilled players were smaller than unskilled players also, back hand stroke was smaller than forehand stroke.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
