this study was conducted to determine grain yield stability of rainfed promising barley genotypes across six rainfed research stations (maragheh, sararood, uromieh, qamloo, zanjan and ardabil) under cold and semi-cold conditions during three cropping seasons (2006-2009) in iran. the studied genotypes were 10 promising barley lines along with two checks (one local and one newly released variety,...

We consider the stability of Longest Queue First (LQF), a natural and low complexity scheduling policy, for a generalized switch model [1]. Contrary to common scheduling policies, the stability of LQF depends on the variance of the arrival processes in addition to their average intensities. We identify new sufficient conditions for LQF to be throughput optimal for i.i.d. arrival processes. Dete...

The relationship between biodiversity and the stability of ecosystem function is a fundamental question in community ecology, and hundreds of experiments have shown a positive relationship between species richness and the stability of ecosystem function. However, these experiments have rarely accounted for common ecological patterns, most notably skewed species abundance distributions and non-r...

STUDY DESIGN Randomized clinical trial. OBJECTIVE To examine the effect of attentional focus instructions during training on the transfer of a learned balance capability to a more challenging condition among subjects with ankle ligament injury. BACKGROUND Current evidence suggests that instructions inducing an external focus of attention may be more effective at promoting learning than inst...

postural control has an important role in daily activities and motor independence. in recent years, conscious aspects of postural control such as attention and cognitive processes have received attention for balance optimization performance. therefore, the present study designed to examine the age–related differences in postural control in the internal and external focus of attention. for this ...