Design engineers must have an intuitive understanding of the behavior of dynamic systems. Teaching the mathematical tools for analyzing and designing dynamic systems presents the challenge of maintaining the connection to the physical world. This paper describes a novel sequence of undergraduate laboratory experiments that illustrates basic concepts in dynamic system analysis and motivates thei...

Jumping ability may be improved via specific strength exercises such as bounding, hopping and box plyometrics. These exercises are stressful on the body due to the short contact times and high ground reaction forces involved. Coaches will know from their practical experience that the specific preparation period is when most injuries occur as both the volume and intensity of training are at a hi...

Frequency-hopping communication is widely used in the field of military communication, which has the capability to resist interference. In frequency-hopping system, narrowband interference signals exist in partial dehopping frequency-hopping signals, equivalent to time-varying interference signals existed in the frequency-hopping signals. Through integrating the diversity combining with singula...

BACKGROUND Compression garments (CG) are commonly used by athletes to improve motor performance and recovery during or following exercise. Numerous studies have investigated the effect of CG on physiological and physical parameters with variable results as to their efficacy. A possible effect of commercially available CG may be to induce a change in leg mechanical characteristics during repetit...

techniques are examined to overcome the performance degradation caused by the channel dispersion using slow frequency hopping (SFH) with dynamic frequency hopping (DFH) pattern adaptation. In DFH systems, the frequency slots are selected by continuous quality monitoring of all frequencies available in a system and modification of hopping patterns for each individual link based on replacing slot...

Performance degradation caused by channel dispersion can be mitigated using avoidance techniques such as frequency hopping spread spectrum. Adaptive frequency hopping techniques such as matched frequency hopping (MFH), clipped matched frequency hopping (CMFH) and advanced frequency hopping (AFH) have been introduced as efficient techniques in slowly fading dispersive channels. These techniques ...