Jianfeng Zhao

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It's an basic requirement in cloud computing that scheduling virtual resources to physical resources with balance load, however, the simple scheduling methods can not meet this requirement. This paper proposed a virtual resources scheduling model and solved it by advanced Non-dominated Sorting Genetic Algorithm II (NSGA II). This model was evaluated by(More)
In this paper, we considered the following four-point boundary value problem y Elsevi tion of Enginee J. Zhao) x00ðtÞ þ hðtÞf ðt; xðtÞ; x0ðtÞÞ 1⁄4 0; 0 < t < 1; x0ð0Þ a1xðnÞ 1⁄4 0; x0ð1Þ þ a2xðgÞ 1⁄4 0; where 0 < a1 < n ; 0 < a2 < 1 1 g ; 0 < n < g < 1; a1a2g a1a2n þ a1 þ a2 > 0: By applying fixed-point theorems, we obtain a variety of existence results. In(More)
Compared with the three-phase, two-split-capacitor active power filter (3P2C-APF), the three-phase, four-leg active power filter (3P4L-APF) has been widely used in three-phase, four-wire grid utility for power quality control due to its numerous advantages, such as higher current output capability, particularly in phase N, lower current and easier voltage(More)
Cloud computing is usually used to describe the large-scale distributed infrastructure, platform and software services provided by third party, which is a hot topic in IT area in recent year. However, it is disputable in industrial and academic area that what is cloud computing and whether it is a novel technology. This paper attempts to draw a clear(More)
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