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Low-level Wind Shear Echo Signal Modeling
Meng JIA 보안공학연구지원센터 2016 International Journal of Hybrid Information Techno Vol.9 No.4
This dissertation studies the wind shear field, modeling and simulation of wind shear radar echo. Firstly it introduces the concept of wind shear, classification, causes and its impact on aviation safety of flight. Then it generally introduces wind shear detection technology and signal processing methods. It finishes computer simulations and gets an echo signal velocity spectrum. Finally it develops a software for wind shear echo model simulation. The computer simulation results show that the velocity spectrum data of echo model coincided with the echo model of theoretical analysis. The wind shear echo signals can be simulated based on the simulation software. It can be simple and practical applied to tests of wind shear radar target detection performance.
1년간 윙게이트 무산소성(WAnT) 반복훈련이 대학 여자 농구선수들의 포지션별 무산소성 운동능력과 신체구성 및 하지 둘레에 미치는 영향
왕가맹(Jia-Meng Wang),진천(Qian Chen),조현철(Cho, Hyun-Chul) 한국체육과학회 2019 한국체육과학회지 Vol.28 No.4
The purpose of the study was to examine a long-term effect of repeated Wingate anaerobic training on anaerobic power of women basket ball players according to playing position. Participants(n=12) performed 4 sets of anaerobic training with 5-minute break between sessions twice per week during a year. Due to the games, total 7 trainings per month were given. Anaerobic capacity was measured by the Wingate power test and body composition was measured by the Bioelectrical Impedance Analysis (BIA). In addition, a line tape was used to measure leg circumference (e.g., quadriceps and calf muscles). As a result, 1. Anaerobic training showed the highest effectiveness when implementing 6-7 times per month. 2. Body composition and Leg circumference was significantly different according to playing positions 3. The Wingate anaerobic training significantly improved anaerobic capacity in majority of players whereas the center position did not show significant improvement. Findings indicate that repeated anaerobic training can be helpful interval training. Also, the optimal training strategy by playing positions may be recommended.