检索结果-南通市图书馆

Anti-synchronization Between Lorenz and Liu Hyperchaotic Systems

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Communications in Theoretical Physics 2008年第9期50卷 677-680页

作者： ZHENG Qiang ZHANG xiao-ping REN zhong-Zhou Department of Physics Nanjing University Nanjing 210093 China

Anti-synchronization between different hyperchaotic systems is presented using Lorenz and Liu systems. When the parameters of two systems are known, one can use active synchronization. When the parameters are unknown or uncertain, the adaptive synchronization is applied. The simulation results verify the effectiveness of the proposed two schemes for anti-synchronization between different hyperchaotic systems.

关键词： hyperchaotic system anti-synchronization active synchronization adaptive synchronization

Exact Solutions and Coherence Structures of Generalized Breor-Kaup Equations

在线全文

学校读者我要写书评

暂无评论

Communications in Theoretical Physics 2008年第12期50卷 1283-1286页

作者： ZHENG Qiang ZHANG xiao-ping REN zhong-Zhou Department of Physics Nanjing University Nanjing 210093 China

Using the mapping method based on q-deformed hyperbolic functions,the exact solutions of generalizedBreor-Kaup equations are *** on the solutions,two coherent structures,periodic-branch kink and non-propagating kink,h... 详细信息

关键词： mapping method periodic-branch kink non-propagating kink soliton interaction background

CYP3A4 mediated in vitro metabolism of vinflunine in human liver microsomes

在线全文

学校读者我要写书评

暂无评论

Acta Pharmacologica Sinica 2007年第1期28卷 118-124页

作者： xiao-ping ZHAO Jiao zhong xiao-quan LIU~2 Guang-ji WANG Key Laboratory of Drug Metabolism and Pharmacokinetics,China Pharmaceutical University Nanjing 210009,China Key Laboratory of Drug Metabolism and Pharmacokinetics China Pharmaceutical University Nanjing China

Aim:To study the metabolism of vinflunine and the effects of selective cyto-chrome P-450(CYP450)inhibitors on the metabolism of vinflunine in human ***:Individual selective CYP450 inhibitors were used to inves-tigate their effects on the metabolism of vinflunine and the principal CYP450 isoforminvolved in the formation of metabolites M1and M2in human liver ***:Vinflunine was rapidly metabolized to 2 metabolites:M1and M2in humanliver microsomes.M1and M2were tentatively presumed to be the N-oxide metabo-lite or hydroxylated metabolite and epoxide metabolite of vinflunine,*** uncompetitively inhibited the formation of M1,and competitivelyinhibited the formation of M2,while α-naphthoflavone,sulfaphenazole,diethyldithiocarbamate,tranylcypromine and quinidine bad little or no inhibitory effecton the formation of M1and ***:Vinflunine is rapidly metabolized inhuman liver microsomes,and CYP3A4 is the major human CYP450 involved in themetabolism of vinflunine.

关键词： vinflunine metabolism CYP3A4 liver microsomes

Proteomic analysis of the immune response of the silkworm infected by Escherichia coli and Bacillus bombyseptieus

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Insect Science 2012年第5期19卷 559-569页

作者： xiao-Wu zhong ping Zhao Yong Zou Hong-Yi Nie Qi-Ying Yi Qing-You Xia zhong-Huai Xiang The Key Sericultural Laboratory of Agriculture Ministry Southwest University Chongqing China

he silkworm, Bombyx mori, is an economically important insect with a 5 000-year history of domestication. During evolution, the silkworm has developed highly effective defenses against invasion and parasitization by microorganisms. In this study, two microorganisms Escherichia coli and Bacillus bombyseptieus were orally infected to silk- worm larvae. After infection with E. coli and B. bombyseptieus for 24 h, we investigated the polypeptide changes in the hemolymph, midgut and integument using two-dimensional gel electrophoresis and matrix-assisted laser desorption ionization time of flight mass spec- trometry. Forty-seven differentially expressed proteins were identified in these tissues. They belonged to a variety of functional classes, including immune proteins, metabolic proteins and structural proteins. Compared with controls, E. coli-infected silkworms showed 21 up- regulated proteins, 25 down-regulated proteins and lost one protein. After infection with B. bombyseptieus, silkworms showed 15 up-regulated proteins, 27 down-regulated pro- teins, lost three proteins and retained two proteins unchanged. We speculate that all these proteins may play a role in the silkworm immune response, although it is unclear why and how the two kinds of bacteria can so markedly alter expression of these proteins. These re- sults offer valuable insights for measuring the proteomic responses of the silkworm innate immune mechanism.

关键词： Bacillus bombyseptieus Escherichia coli immune response proteomics silkworm

New Results in Cooperative Adaptive Optimal Output Regulation

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Systems Science & Complexity 2024年第1期37卷 253-272页

作者： DONG Yuchen GAO Weinan JIANG zhong-ping State Key Laboratory of Synthetical Automation for Process Industries Northeastern UniversityShenyang 110819China Department of Electrical and Computer Engineering Tandon School of EngineeringNew York UniversityBrooklynNY 11201USA

This paper investigates the cooperative adaptive optimal output regulation problem of continuous-time linear multi-agent *** the multi-agent system dynamics are uncertain,solving regulator equations and the corresponding algebraic Riccati equations is challenging,especially for high-order *** this paper,a novel method is proposed to approximate the solution of regulator equations,i.e.,gradient descent *** is worth noting that this method obtains gradients through online data rather than model information.A data-driven distributed adaptive suboptimal controller is developed by adaptive dynamic programming,so that each follower can achieve asymptotic tracking and disturbance ***,the effectiveness of the proposed control method is validated by simulations.

关键词： Adaptive dynamic programming cooperative output regulation gradient descent method multi-agent systems.

Dark Localized Waves in Shallow Waters:Analysis within an Extended Boussinesq System

在线全文

学校读者我要写书评

暂无评论

Chinese Physics Letters 2024年第4期41卷 32-37页

作者： Zhengping Yang Wei-ping zhong Milivoj Belic Department of Medical Science Shunde PolytechnicShunde 528300China Department of Electronic Engineering Shunde PolytechnicShunde 528300China Division of Arts and Sciences Texas A&M University at Qatar23874 DohaQatar

We study dark localized waves within a nonlinear system based on the Boussinesq approximation,describing the dynamics of shallow water *** symbolic calculus,we apply the Hirota bilinear method to transform an extended Boussinesq system into a bilinear form,and then use the multiple rogue wave method to obtain its dark rational *** the first-and second-order dark solutions,we examine the conditions under which these localized solutions exist and their spatiotemporal *** the selection of various parameters and by utilizing different visualization techniques(intensity distributions and contour plots),we explore the dynamical properties of dark solutions found:in particular,the first-and second-order dark rogue *** also explore the methods of their *** findings presented here not only deepen the understanding of physical phenomena described by the(1+1)-dimensional Boussinesq equation,but also expand avenues for further *** method can be extended to other nonlinear systems,to conceivably obtain higher-order dark rogue waves.

关键词： Boussinesq bilinear nonlinear

An Efficient Multi-objective Approach Based on Golden Jackal Search for Dynamic Economic Emission Dispatch

在线全文

学校读者我要写书评

暂无评论

Journal of Bionic Engineering 2024年第3期21卷 1541-1566页

作者： Keyu zhong Fen xiao Xieping Gao Key Laboratory of Computing and Stochastic Mathematics of Ministry of Education Hunan Normal UniversityChangsha410081China School of Mathematics and Statistics Hunan Normal UniversityChangsha410081China School of Computer Science Xiangtan UniversityXiangtan411105China Hunan Provincial Key Laboratory of Intelligent Computing and Language Information Processing Hunan Normal UniversityChangsha410081China

Dynamic Economic Emission Dispatch(DEED)aims to optimize control over fuel cost and pollution emission,two conflicting objectives,by scheduling the output power of various units at specific *** many methods well-performed on the DEED problem,most of them fail to achieve expected results in practice due to a lack of effective trade-off mechanisms between the convergence and diversity of non-dominated optimal dispatching *** address this issue,a new multi-objective solver called Multi-Objective Golden Jackal Optimization(MOGJO)algorithm is proposed to cope with the DEED *** proposed algorithm first stores non-dominated optimal solutions found so far into an ***,it chooses the best dispatching solution from the archive as the leader through a selection mechanism designed based on elite selection strategy and Euclidean distance index *** mechanism can guide the algorithm to search for better dispatching solutions in the direction of reducing fuel costs and pollutant ***,the basic golden jackal optimization algorithm has the drawback of insufficient search,which hinders its ability to effectively discover more Pareto *** this end,a non-linear control parameter based on the cosine function is introduced to enhance global exploration of the dispatching space,thus improving the efficiency of finding the optimal dispatching *** proposed MOGJO is evaluated on the latest CEC benchmark test functions,and its superiority over the state-of-the-art multi-objective optimizers is highlighted by performance ***,empirical results on 5-unit,10-unit,IEEE 30-bus,and 30-unit systems show that the MOGJO can provide competitive compromise scheduling solutions compared to published DEED ***,in the analysis of the Pareto dominance relationship and the Euclidean distance index,the optimal dispatching solutions provided by MOGJO are the closest to the ideal solutions for minimizing fuel costs

关键词： Dynamic economic emission dispatch Multi-objective optimization Golden jackal Euclidean distance index

APFA:Ameliorated Pathfinder Algorithm for Engineering Applications

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Bionic Engineering 2024年第3期21卷 1592-1616页

Pathfinder algorithm(PFA)is a swarm intelligent optimization algorithm inspired by the collective activity behavior of swarm animals,imitating the leader in the population to guide followers in finding the best food *** algorithm has the characteristics of a simple structure and high ***,PFA faces challenges such as insufficient population diversity and susceptibility to local optima due to its inability to effectively balance the exploration and exploitation *** paper proposes an Ameliorated Pathfinder Algorithm called APFA to solve complex engineering optimization ***,a guidance mechanism based on multiple elite individuals is presented to enhance the global search capability of the ***,to improve the exploration efficiency of the algorithm,the Logistic chaos mapping is introduced to help the algorithm find more high-quality potential solutions while avoiding the worst ***,a comprehensive following strategy is designed to avoid the algorithm falling into local optima and further improve the convergence *** three strategies achieve an effective balance between exploration and exploitation overall,thus improving the optimization performance of the *** performance evaluation,APFA is validated by the CEC2022 benchmark test set and five engineering optimization problems,and compared with the state-of-the-art metaheuristic *** numerical experimental results demonstrated the superiority of APFA.

关键词： Pathfinder algorithm Swarm intelligent Metaheuristic Engineering problems

Study of baryon number transport dynamics and strangeness conservation effects using Ω-hadron correlations

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nuclear Science and Techniques 2024年第7期35卷 147-156页

作者： Wei-Jie Dong xiao-Zhou Yu Si-Yuan ping Xia-Tong Wu Gang Wang Huan-zhong Huang Zi-Wei Lin Key Laboratory of Nuclear Physics and Ion-beam Application(MOE) Fudan UniversityShanghai 200433China Department of Physics and Astronomy University of CaliforniaLos AngelesCA 90095USA Department of Physics East Carolina UniversityGreenvilleNC 27858USA

In nuclear collisions at RHIC energies, an excess of Ω hyperons over ■ is observed, indicating that Ω has a net baryon number despite s and s quarks being produced in pairs. The baryon number in Ω may have been transported from the incident nuclei and/or produced in the baryon-pair production of Ω with other types of anti-hyperons such as Ξ. To investigate these two scenarios, we propose to measure the correlations between Ω and K and between Ω and anti-hyperons. We use two versions, the default and string-melting, of a multiphase transport(AMPT) model to illustrate the method for measuring the correlation and to demonstrate the general shape of the correlation. We present the Ω-hadron correlations from simulated Au+Au collisions at ■ =7.7 and 14.6 Ge V and discuss the dependence on the collision energy and on the hadronization scheme in these two AMPT versions. These correlations can be used to explore the mechanism of baryon number transport and the effects of baryon number and strangeness conservation on nuclear collisions.

关键词： Baryon number transport Strangeness conversation Correlation Gluon junction