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Quasi-attractors in a Piece-Wise Smooth Area-Preserving Map

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Chinese Physics Letters 2001年第1期18卷 13-15页

作者： WANG Jian DING Xiao-Ling WANG Bing-Hong he da-ren Institute of Plasma Physics Chinese Academy of SciencesHefei 230031 Complexity Science Center Yangzhou UniversityYangzhou 225002 CCAST(World Laboratory) P.O.Box 8730Beijin100080 Department of Modern Physics University of Science and Technology ofChinaHefei 230026

In a two-dimensional area-preserving map we found a kind of noninvertibility that is induced by a piece-wise smooth property of the *** can lead to the appearance of such kinds of elliptic islands that attract the iterations from a set of initial values outside themselves,while behaving regularly *** suggest calling such islands quasi-attractors.

关键词： preserving outside elliptic

A Simple Model of Interaction between Journals, Authors and Editorial Board Members

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Chinese Physics Letters 2011年第1期28卷 222-225页

作者： ZOU Sheng-Rong XU Ying-Ying XU Xiu-Lian WANG Jian he da-ren College of Information Engineering Yangzhou University Yangzhou 225009 College of Physics Science and Technology Yangzhou University Yangzhou 225009

Recently, quantitative study on complex systems has become an attractive research area for physicists. Human scientific activity, including scientific paper publication, is an important complex system and therefore deserves an investigation. We present a simple model to describe the interaction between journals, authors and editorial board members. In the model the probabilities, with which a journal accepts papers from an author or invites him as an editorial board member, obey normal distributions. However, the most probable value of the latter distribution shifts such that the journal can have higher level authors being its editorial board members. The analytic derivation by the model is in rather good agreement with the empirical observation from the selected fifteen worldwide journals with different impact factors.

关键词： Statistical physics and nonlinear systems

A Formula of Average Path Length for Unweighted Networks

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Communications in Theoretical Physics 2008年第10期50卷 1017-1020页

作者： LIU Chun-Ping LIU Yu-Rong he da-ren ZHU Lu-Jin Institute of Mathematics Yangzhou University Yangzhou 225002 China College of Physics Science and Technology Yangzhou University Yangzhou 225002 China

In this paper,based on the adjacency matrix of the network and its powers,the formulas are derived for theshortest path and the average path length,and an effective algorithm is ***,an example is providedto demonstrat... 详细信息

关键词： complex network average path length adjacency matrix

Scaling Properties of the Period-Adding Sequences in a Multiple Devil’s Staircase

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Chinese Physics Letters 1998年第4期15卷 246-248页

作者： WU Cai-yun QU Shi-xian WU Shun-guang he da-ren Department of Physics Teachers CollegeYangzhou UniversityYangzhou 225002 Department of Basic Courses Xi'an Petroleum InstituteXi'an 710065 Department of Physics Northwestern UniversityXi'an 710069 Institute of Theoretical Physics Chinese Academy of SciencesBeijing 100080

In this letter the scaling properties of the period-adding sequences in a so-called“multiple Devil’s staircase”are *** is certified both analytically and numerically that the width of the i-th phase-locked plateau in a sequence scales as In|Δe(i)|∝i,and the position of the plateau scales as In|e_(∞)-e_(i)|∝*** properties are qualitatively different from those of the period-adding sequences in conventional Devil’s staircases.

关键词： adding letter sequences

A Crisis with a Special Scaling Behavior

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Chinese Physics Letters 1999年第3期16卷 167-168页

作者： DING Xiao-ling WU Shun-guang YIN Yue-cai he da-ren Department of Physics Teachers CollegeYangzhou UniversityYangzhou 225002 Institute of Low Energy Nuclear Physics Beijing Normal UniversityBeijing 100875 Department of Physics Shenyang Teachers CollegeShenyang 110031 CCAST(World Laboratory) P.O.Box 8730Beijing 100080

A kind of crisis with special scaling properties has been observed in a discontinuous *** crisis happens via a collision between a discontinuity of the mapping function and an unstable periodic orbit locating on the basin boundary of the chaotic *** scaling property of the crisis is∝∈-1.8,whereand∈stand for the average characteristic time and the control parameter value crossing the critical point,respectively.

关键词： scaling locating chaotic

Escaping from Strange Sets in Discontinuous Circle Map

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Chinese Physics Letters 1996年第4期13卷 249-252页

作者： WANG Bing-hong he da-ren JI Xi-ping GUAN Shan SUN Jian-gang QU Shi-xian Department of Modern Physics University of Science and Technology of ChinaHefei 230026 Department of Physics Northwestern UniversityXi'an 710069 Department of Basic Courses Xi'an Petroleum InstituteXian 710061

The leakage of iterations from chaotic attractor near crisis due to dynamical inter-action between discontinuity and noninvertibility has been *** scaling law of the mean life time is derived *** numerical result show... 详细信息

关键词： attractor chaotic scaling

Competition Ability Dependence on Uniqueness in General Cooperation-Competition Systems

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Chinese Physics Letters 2011年第2期28卷 243-246页

作者： LIU Ai-Fen XU Xiu-Lian FU Chun-Hua WANG Jian he da-ren College of Physics Science and Technology Yangzhou UniversityYangzhou 225002

We discuss the dependence of competition ability on uniqueness for the general cooperation-competition *** empirical investigation of the 15 real world systems is *** find that the dependence varies with the change of *** most of the systems show positive tendency,we find that a special system shows negative *** relationship between the heterogeneity indexes for the distributions of competition ability and uniqueness is also discussed analytically and empirically.

关键词： uniqueness empirical system

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一类低反射率分形膜系的设计

物理学报 2000年第11期49卷 2171-2175页

作者：李岩何大韧扬州大学物理系扬州225002

讨论了一类分形电磁波吸收膜层的设计 .基于一种简化模型解析计算了膜系反射率 ,并得出了一系列选择膜层材料以降低反射率的判据 .对由这些判据所选的一些理想和实际材料所构成的膜系的反射率进行了数值模拟 .结果表明 ,符合材料判据构... 详细信息

讨论了一类分形电磁波吸收膜层的设计 .基于一种简化模型解析计算了膜系反射率 ,并得出了一系列选择膜层材料以降低反射率的判据 .对由这些判据所选的一些理想和实际材料所构成的膜系的反射率进行了数值模拟 .结果表明 ,符合材料判据构成的分形膜系的反射率会随分形级数的增加而逐渐降低 .最低的平均反射率为 0 .0 1.

关键词：分形薄膜系电磁波吸收低反射率薄膜

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不连续不可逆二维映象的动力学特性

物理学报 2006年第8期55卷 3979-3984页

作者：戴俊褚翔升何大韧江苏科技大学数理学院镇江212003 扬州大学物理科学与技术学院扬州225002

总结两个保守映象不可逆地分段连续链接(称为类耗散系统)以及一个保守映象与一个耗散映象不可逆地分段连续链接(称为半耗散系统)情况下得到的五项共同动力学特征:不连续边界象集构成的随机网成为唯一的混沌轨道;由于某些相点具有两个逆... 详细信息

总结两个保守映象不可逆地分段连续链接(称为类耗散系统)以及一个保守映象与一个耗散映象不可逆地分段连续链接(称为半耗散系统)情况下得到的五项共同动力学特征:不连续边界象集构成的随机网成为唯一的混沌轨道;由于某些相点具有两个逆象而导致的相空间塌缩(类耗散);由于系统的不连续不可逆性质而出现的胖分形禁区网;在具有吸引子共存时占据不连续边界象集随机网和胖分形禁区网区域的点滴状吸引域以及由此导致的吸引子不可预言性;即使在传统强耗散存在的情况下点滴状吸引域仍由类耗散机制主宰.以一个累积触发电路为例,说明这五项系统动力学共性在两个耗散映象不可逆地分段连续链接的情况下仍存在,因此它们是不连续不可逆二维映象的动力学共性.

关键词：随机网禁区网点滴状吸引域