The purpose of this paper is to explain how and why performance in explosive movements depends on musculoskeletal properties and coordination. First, a musculoskeletal model is presented that has muscle stimulation as only independent input, and allows for forward simulation of explosive movements. Subsequently, a theoretical framework is presented for analyzing simulation results: performance ...

OBJECTIVE To examine trends in suicide rates in Israel over a 13-year period. METHOD All cases of autopsy-confirmed suicide in Israel from 1985 to 1997 were retrospectively reviewed. RESULTS An overall annual increase in suicide rates, with rates in men 3 times higher than those in women, was observed. Suicide rates were highest in the second and third decades of life. Unlike Western countr...

the aim of this investigation was to compare the level and the pattern of attention demands of a volleyball jumping serve using a probe reaction time (rt) technique. 14 junior elite volleyball players performed 60 jumping serves (js) with their preferred hand. jumping serve was performance as the primary task and verbal rt that was administered in four probe positions (pp) as secondary task. re...

Broadcasting protocols reduce the cost of video-ondemand services by distributing more efficiently videos that are likely to be simultaneously watched by several viewers. Unfortunately, they do not allow the customer to pause, move fast forward or backward while watching a video. We present an interactive pagoda broadcasting protocol that provides these functions at a very reasonable cost. Our ...

Sensitivity analysis is an important tool for describing power system dynamic behavior in response to parameter variations. It is a central component in preventive and corrective control applications. The existing approaches for sensitivity calculations, namely, finite-difference and forward sensitivity analysis, require a computational effort that increases linearly with the number of sensitiv...

The term ‘horizontal transfer (HT)’ refers to the transfer of genetic material between two reproductively isolated organisms. HT is thought to occur rarely in eukaryotes compared to vertical inheritance, the transmission of DNA from parent to offspring. In a recent study we have provided evidence that a family of DNA transposons, called SPACE INVADERS or SPIN, independently invaded horizontally...

Many spiders possess myrmecomorphy, and species of the jumping spider genus Myrmarachne exhibit nearly perfect ant mimicry. Most salticids are diurnal predators with unusually high visual acuity that prey on various arthropods, including conspecifics. In this study, we tested whether predation pressure from large jumping spiders is one possible driving force of perfect ant mimicry in jumping sp...

In this paper, the problem of stability criteria for Markovian jumping BAM neural networks with leakage and discrete delays has been investigated. Some new sufficient condition are derived based on a novel Lyapunov-Krasovskii functional approach. These new criteria based on delay partitioning idea are proved to be less conservative because free-weighting matrices method and a convex optimizatio...

1) chronic administration of morphine hydrochloride in the drinking water of mice induced physical dependence. jumping and diarrhea, two signs of withdrawal, were produced by intraperitoneal (ip) injection of naloxone. 2) baclofen, bicuculline and picrotoxin decreased the number of mice's jumping episodes and frequency of diarrhea. 3) muscimol decreased jumping but not diarrhea. 4) the data ind...