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Mathematical and numerical analyses have been performed to examine the close link between Fabry–Pérot resonance and natural-resonance frequencies. For the mathematical analysis, the conditions resulting in minimum magnitudes of reflection coefficients in frequency-domain are derived for air-backed and metal-backed low-loss non-dispersive (or weakly dispersive) dielectric samples with relative complex permittivity εr and thickness L for free-space wave propagation at normal incidence. The close relation between Fabry–Pérot resonance and natural-resonance frequencies is demonstrated for three di ...More
Background/Purpose: This study aimed to examine the regional differences of injuries of Greco-Roman and freestyle wrestlers. Participants (age: M 21.15 years, SD 3.54 years) comprised 100 Greco-Roman wrestlers and 100 freestyle wrestlers who attended national and international events from Kyrgyzstan and Turkey. Results indicated that whereas freestyle wrestlers suffered from knee, hand, wrist, and shoulder injuries more frequently than did Greco-Roman wrestlers, the latter experienced more rib, back, shoulder, and elbow injuries. According to the findings, ear fracture is the most common injur ...More