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Effects of variable-time impulses on global exponential stability of Cohen-Grossberg neural networks

International Journal of Biomathematics 2017年第8期10卷 241-263页

作者： Xianxiu Zhang Chuandong Li Tingwen Huang hafiz gulfam ahmad College of Electronic and Information EngineeringSouthwest University Chongqing 400715 P. R. China Department of Mathematics Liupanshui Normal University Guizhou Liupanshui 553001 P. R. China Department of MathematicsTexas A&M University at Qatar Doha 23874 Qatar Department of Computer Science and ITGhazi University D. G. Khan 32260 Pakistan

We investigate the global exponential stability of Cohen–Grossberg neural networks (CGNNs) with variable moments of impulses using B-equivalence method. Under certain conditions, we show that each solution of the considered system intersects each surface of discontinuity exactly once, and that the variable-time impulsive systems can be reduced to the fixed-time impulsive ones. The obtained results imply that impulsive CGNN will remain stability property of continuous subsystem even if the impulses are of somewhat destabilizing, and that stabilizing impulses can stabilize the unstable continuous subsystem at its equilibrium points. Moreover, two stability criteria for the considered CGNN by use of proposed comparison system are obtained. Finally, the theoretical results are illustrated by two examples.

关键词： Cohen–Grossberg neural network (CGNN) variable-time impulse B-equivalence global exponential stability

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Current Cloud Computing Security Concerns from Consumer Perspective

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机床与液压 2013年第24期41卷 1-5页

作者： hafiz gulfam ahmad Zeeshan ahmad Department of Computer Science Agriculture University Faisalabad Pakistan Bahria University Islamabad Pakistan

In recent years cloud computing is the subject of extensive research in the emerging field of information technology and has become a promising *** reason behind this widespread interest is its abilityto increase the capacity and capability of enterprises,having no investment for new infrastructure,no software license requirement and no need of any *** concern is the main limitation factor in the growth of this new born *** security responsibilities of both,the provider and the consumer greatly differ between cloud service *** this paper we discuss a variety of security risks,authentication issues,trust,and legal regularity in cloud environment with consumer *** research focused only on technical and business consequences of cloud computing and ignored consumer ***,this paper discusses the consumer security and privacy preferences.

关键词：云计算电子商务信息化建设供应商

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