Introduction: The purpose of this study was to examine the effect of 6 weeks hopping exercises program on time to stabilization and perceived stability in athletes with chronic ankle instability Methods: twenty-eight basketball player with chronic ankle instability (mean ± SD age;22.67±2.88 years, mean ± SD weight; 80.47±8.48 kg, mean ± SD height; 186.82±3.09 cm) were participated in this...

This paper presents the hopping peak height algorithm in controlling the hopping height of a one legged hopping robot. The hopping mechanism produces continuous and rhythmic pattern. The continuous and rhythmic pattern behaviors produce oscillation feedback to the closed loop system and continuously produce oscillation error to the controller. Therefore, hopping peak height algorithm is designe...

We investigate how multi-hop routing affects the goodput and throughput performances of IEEE 802.11 distributed coordination function-based wireless networks compared with direct transmission (single hopping), when medium access control dynamics such as carrier sensing, collisions, retransmissions, and exponential backoff are taken into account under hidden terminal presence. We propose a semi-...

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...

Page-coloring and bin-hopping are two well-known page mapping schemes for reducing cache connicts. Previous work found bin-hopping to have 4% less cache miss rate than page-coloring on uniprocessor machines. Using execution-driven simulations, we nd that bin-hopping signiicantly outperforms simplistic page-coloring on CC-NUMA multipro-cessors. In certain cases, bin-hopping has 32% to 58% less e...

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 ...

Photosynthetic reaction centers (PRCs) employ multiple-step tunneling (hopping) to separate electrons and holes that ultimately drive the chemistry required for metabolism. We recently developed hopping maps that can be used to interpret the rates and energetics of electron/hole hopping in three-site (donor-intermediate-acceptor) tunneling reactions, including those in PRCs. Here we analyze sev...

Beerse, Matthew, "Effects of frequency on single leg hopping in typically developing preadolescents. Abstract Hopping is considered a mass-spring model movement in which the leg supports the center of mass. There is a preferred hopping frequency and hopping outside of that frequency is more difficult and requires more energy. Leg stiffness has been shown to be an important factor when hopping a...

We examined the functional role of two major proximal leg extensor muscles of tammar wallabies during level and inclined hopping (12 degrees, 21.3% grade). Previous in vivo studies of hopping wallabies have revealed that, unlike certain avian bipeds, distal hindlimb muscles do not alter their force-length behavior to contribute positive work during incline hopping. This suggests that proximal m...