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One factor contributing to rainfall in a certain region is the presence of convective cloud growth. Extensive clouds can trigger extreme weather conditions and occurrence Mesoscale Convective Complex (MCC) phenomena. MCCs phenomena are characterized by circular cover with eccentricity ≥ 0.7, core area 50,000 km², 100,000 top temperature ≤ -52 °C or 221 K. This study aims identify spatial diurna...
Thunderstorms are major climatic events due to the significant effects and catastrophic consequences on humans and the natural environment. The researches have shown that the elevation and latitude factors are two variables that can affect the occurrence of this phenomenon. Therefore, the main aim of this study is to investigate the spatial analysis of the effects of lightning and its effects o...
the aim of this study is investigating the effect of teaching “metacognitive strategies” on the way which scientific information retrieval workes by the using of google scholar searching machine on the students of ms in the psycology & education faculty of allameh tabatabayi university in 2007-2008 academic year. the statistical community was the students of ms in psychology & education facult...
Generating high quality schedules for distributed applications on a Computational Grid is a challenging problem. Some experiments using Simulated Annealing as a scheduling mechanism for a ScaLAPACK LU solver on a Grid are described. The Simulated Annealing scheduler is compared to a Ad-Hoc Greedy scheduler used in earlier experiments. The Simulated Annealing scheduler exposes some assumptions b...
While the ACO can find the optimal path of network, there are too many iterative times and too slow the convergence speed is also very slow. This paper proposes the Q-ACO QoSR based on convergence expectation with the real-time and the high efficiency of network. This algorithm defines index expectation function of link,and proposes convergence expectation and convergence grads. This algorithm ...
SYNOPSIS Few studies have quantified the relative importance of direct effects of climate change on communities versus indirect effects that are mediated thorough species interactions, and the limited evidence is conflicting. Trait-based approaches have been popular in studies of climate change, but can they be used to estimate direct versus indirect effects? At the species level, thermal toler...
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