检索结果-南通市图书馆

Synchronization of switched Boolean networks with impulsive effects

在线全文

学校读者我要写书评

暂无评论

International Journal of Biomathematics 2018年第6期11卷 93-110页

作者： Xiaojing Xu Yansheng Liu Haitao Li fuad e. alsaadi School of Mathematics and Statistics Shandong Normal University Jinan 250014 P. R. China Department of electrical and Computer engineering Faculty of engineering King Abdulaziz University Jeddah 21589 Saudi Arabia

This paper studies the state/output synchronization of switched Boolean networks （SBNs） with impulsive effects via the algebraic state space representation （ASSR） approach. First, an algebraic form is established for SBNs with impulsive effects via ASSR. Second, based on the algebraic form, some necessary and sufficient conditions are presented for the state/output synchronization of SBNs with impulsive effects under arbitrary switching signals. Third, two special kinds of switching signals, that is, free switching signal and feedback switching signal, are considered for the state synchroniza-tion of SBNs with impulsive effects. Finally, two illustrative examples are worked out to show the effectiveness of the obtained results.

关键词： Switched Boolean network impulsive effects synchronization algebraic state space representation.

Set stability for switched Boolean networks with open-loop and closed-loop switching signals

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China(Information Sciences) 2018年第9期61卷 232-240页

作者： Xiaohua LI Jianquan LU Jianlong QIU Xiangyong CHeN Xiaodi LI fuad e.alsaadi School of Automation and engineering and Key Laboratory of Complex Systems and Intelligent Computing in Universities of Shandong Linyi University School of Mathematics and Statistics Shandong Normal University School of Mathematics Southeast University Department of electrical and Computer engineering King Abdulaziz University

This paper mainly analyzes the set stability of switched Boolean networks(SBNs) by considering two different methods of switching signals in the form of open-loop and closed-loop switching. First, the definitions of set stability are proposed for SBNs with such switching signals. Then, we propose two different algorithms to find the largest open-loop switching invariant set and largest closed-loop switching invariant set. Furthermore, the corresponding set stability conditions for SBNs are given in each case. In addition,the constructive procedures are presented to design the switching signal sequence to achieve set stability under the two different methods of switching signals. Finally, the effectiveness of the proposed algorithms and research results are demonstrated using two numerical examples.

关键词： switched Boolean network set stability semi-tensor product switching signal design

Synchronising second-order multi-agent systems under dynamic topology via reference model-based algorithm

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Control and Decision 2014年第3期1卷 214-225页

作者： Jiahu Qin Huijun Gao Tasawar Hayat fuad e.alsaadi Department of Automation University of Science and Technology of ChinaHefeiChina Research School of engineering Australian National UniversityCanberraAustralia Research Institute of Intelligent Control and Systems Harbin Institute of TechnologyHarbinChina Nonlinear Analysis and Applied Mathematics Group King Abdulaziz University(KAU)JeddahSaudi Arabia Faculty of engineering Department of Electrical and Computer EngineeringKing Abdulaziz UniversityJeddahSaudi Arabia Department of Mathematics Quaid-I-Azam UniversityIslamabadPakistan

This paper revisits the synchronisation problem for second-order multi-agent systems(MASs)under dynamically changing communication *** employing the reference model-based synchronisation algorithm,it is finally shown that synchronisation for both the position and velocity states can be achieved if the union of the communication topologies has a directed spanning tree frequently *** extends the existing results obtained for second-order MASs which exploits mild communication topology condition guaranteeing the synchronisation to a more general *** analysis is successfully performed by exploiting the product properties of row-stochastic matrices,which can also provide us with an estimate the convergence rate towards the synchronisation.

关键词： synchronisation double-integrator agents weakest possible communication topology rate of convergence

Adaptive outer synchronization between two delayed oscillator networks with cross couplings

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China(Information Sciences) 2020年第10期63卷 267-269页

作者： Jianbao ZHANG Ancai ZHANG Jinde CAO Jianlong QIU fuad e.alsaadi School of Automation Southeast University School of Information Science and engineering Linyi University Department of electrical and Computer engineering Faculty of EngineeringKing Abdulaziz University

Dear editor,Chaos synchronization is a typical kind of collective behaviors induced by external control or mutual couplings between chaotic nodes [1].During the past decades,increasing interest has been devoted to study the interplay between network topology and chaos synchronization [1,2].Many types of synchronization phenomena have been proposed such as complete synchronization,cluster synchronization [3],and outer synchroni-

关键词： Adaptive control Complex networks Lyapunov method Outer synchronization Cross coupling

Hydromagnetic peristaltic transport of copper-water nanofluid with temperature-dependent effective viscosity

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Particuology 2016年第4期14卷 133-140页

作者： Fahad M. Abbasi Tasawar Hayat Sabir A. Shehzad fuad alsaadi Naif Altoaibi Department of Mathematics COMSATS Institute of lnformation Technology Islamabad 44000 Pakistan Department of Mathematics Quaid-l-Azam University 45320 Islamabad 44000 Pakistan Department of electrical and Computer engineering Faculty of Engineering King Abdulaziz University Jeddah Saudi Arabia Department of Mathematics COMSATS Institute of Information Technology Sahiwal Pakistan

The unique chemical mechanical, and thermodynamic properties of nanofluids make them a subject of great interest for scientists from all domains. Such fluids are of particular significance in biomedical engineering owing to their vast and novel applications in modern drug delivery systems; for example, mixed convective peristaltic flow of water-based nanofluids under the influence of an externally applied magnetic field is of particular significance. Hence, a lot of research has focused on peristalsis in the presence of velocity and thermal slip effects. An empirical relation for the effective viscosity of the nanofluid is proposed here for the first time. The viscosity of the nanofluid varies with temperature and nanoparticle volume fraction. Numerical simulation of the resulting nonlinear system of equations is presented for different quantities of interest. The results indicate that the maximum velocity and temperature of the copper-water nanofluid increase for larger variable viscosity parameter. The pressure gradient in the wider part of the channel is also found to increase as a function of the variable viscosity parameter. The variable viscosity parameter also influences the size of the trapped bolus. An increase in the nanoparticle volume fraction reduces the reflux phenomenon in a peristaltic flow.

关键词： Temperature dependent effective viscosity Copper-water nanofluid Peristalsis Slip effect Magnetohydrodynamics

Simultaneous effects of Hall current and thermal deposition in peristaltic transport of eyring-Powell fluid

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Biomathematics 2015年第2期8卷 173-200页

作者： T. Hayat Anum Tanveer Humaira Yasmin fuad alsaadi Department of Mathematics Quaid-I-Azam University 45320 Islamabad 44000 Pakistan Department of electrical and Computer engineering Faculty of engineering King Abdulaziz University Jeddah 21589 Saudi Arabia Department of Mathematics COMSATS Institute of Information Technology G. T. Road Wah Cantt 47040 Pakistan

Peristaltic flow by a sinusoidal traveling wave in the walls of two-dimensional channel with wall properties is investigated. The channel is filled with incompressible eyring-Powell fluid. Mathematical modeling is developed through aspects of Hall current, thermal deposition and convection. Long wavelength and low Reynolds number considerations are adopted. Perturbation solutions to the resulting problem for small material parameter of fluid are obtained. expressions of velocity, temperature, concentration and stream function are derived. Variations of pertinent parameters on the physical quantities of interest are explored in detail. The present analysis is especially important to predict the rheological characteristics in engineering applications by peristalsis.

关键词： Hall current thermal deposition MHD eyring-Powell fluid.

New developments in control design techniques of logical control networks

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Frontiers of Information Technology & electronic engineering 2020年第2期21卷 220-233页

作者： Xiang-shan KONG Shu-ling WANG Hai-tao LI fuad e.alsaadi School of Mathematics and Statistics Shandong Normal UniversityJirian 250014China Department of electrical and Computer engineering King Abdulaziz UniversityJeddah 21589Saudi Arabia

The control design problem plays a fundamental role in the study of logical control networks(LCNs).This paper presents a detailed survey on new developments in control design techniques of ***,some preliminary results on the semi-tensor product method and LCNs are ***,we move on to some new developments for control design techniques of LCNs,including the reachable set approach,the pinning control technique,the control Lyapunov function approach,the event-triggered control technique,and the sampled-data control ***,an illustrative example is given to demonstrate the effectiveness of these techniques.

关键词： Logical control network Control design Semi-tensor product of matrices

A new four-dimensional hyperjerk system with stable equilibrium point, circuit implementation, and its synchronization by using an adaptive integrator backstepping control

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2018年第10期27卷 231-239页

作者： J P Singh V T Pham T Hayat S Jafari F e alsaadi B K Roy Department of electrical engineering National Institute of Technology Silchar 788010 India School of electronics and Telecommunications Hanoi University of Science and Technology 01 Dai Co Viet Hanoi Viet Nam Department of Mathematics Faculty of Science King Abdulaziz University Jeddah 21589 Saudi Arabia Department of Mathematics Quaid-I-Azam University Islamabad 44000 Pakistan Ambikar University of Technology Tehran 15875-4413Iran Department of Information Technology Faculty of Computing and IT King Abdulaziz University Jeddah Saudi Arabia

This paper reports a new simple four-dimensional（4 D） hyperjerk chaotic system. The proposed system has only one stable equilibrium point. Hence, its strange attractor belongs to the category of hidden attractors. The proposed system exhibits various dynamical behaviors including chaotic, periodic, stable nature, and coexistence of various attractors. Numerous theoretical and numerical methods are used for the analyses of this system. The chaotic behavior of the new system is validated using circuit implementation. Further, the synchronization of the proposed systems is shown by designing an adaptive integrator backstepping controller. Numerical simulation validates the synchronization strategy.

关键词： new hyperjerk chaotic system stable equilibrium hidden attractors adaptive backstepping control synchronization

Peristaltic motion of third grade fluid in curved channel

在线全文

学校读者我要写书评

暂无评论

Applied Mathematics and Mechanics(english edition) 2014年第1期35卷 73-84页

作者： S.HINA M.MUSTAFA T.HAYAT F.e.alsaadi Department of Mathematical Sciences Fatima Jinnah Women University School of Natural Sciences (SNS) National University of Sciences and Technology (NUST) Department of Mathematics Quaid-i-Azam University Department of electrical and Computer engineering Faculty of Engineering

＂ Analysis is performed to study the slip effects on the peristaltic flow of non-Newtonian fluid in a curved channel with wall properties. The resulting nonlinear partial differential equations are transformed to a single ordinary differential equation in a stream function by using the assumptions of long wavelength and low Reynolds number. This differential equation is solved numerically by employing the built-in routine for solving nonlinear boundary value problems （BVPs） through the software Mathematica. In addition, the analytic solutions for small Deborah number are computed with a regular perturbation technique. It is noticed that the symmetry of bolus is destroyed in a curved channel. An intensification in the slip effect results in a larger magnitude of axial velocity. Further, the size and circulation of the trapped boluses increase with an increase in the slip parameter. Different from the case of planar channel, the axial velocity profiles are tilted towards the lower part of the channel. A comparative study between analytic and numerical solutions shows excellent agreement.

关键词： third grade fluid slip condition peristalsis curved channel mathematicalmodeling