混沌同步的充分条件及应用

对两大类常用连续混沌系统，给出了同步的充分条件，以及状态变量的演化范围，对其作了证明，从理论上分析了这些充分条件一定可实现. 作为应用，证明了时变参数混沌同步的实现充分条件，并用Chua系统仿真实现. 时变参数混沌同步通信具有强抗破译性，也给出其抗破译的仿真. 关键词： 条件Lyapunov指数(CLE) Chua电路 参数同步     

Chaotic transient and the improvement of system flexibility

On this work it is addressed the problem of how to exploit the dynamic behind a chaotic transient behavior to improve system performance and adaptability to many operational conditions request. The phenomena of chaotic transient is explained as due to the presence of a chaotic saddle in the phase space. Different system operation points can be associated to the set of unstable periodic orbits that exist embedded in the chaotic saddle. A classical control procedure associated with a control of chaos strategy is proposed as a methodology to quickly guide system trajectories among different operation points and to keep the system on a particular operation point. The methodology is applied on an electronic circuit system.     

Global Attractors for Multivalued Random Dynamical Systems Generated by Random Differential Inclusions with Multiplicative Noise

In this paper we consider a stochastic differential inclusion with multiplicative noise. It is shown that it generates a multivalued random dynamical system for which there also exists a global random attractor.     

间接馈电柱-锥级联爆磁压缩发生器数值模拟

 为了研究间接馈电、两级级联柱-锥构型的爆磁压缩发生器的物理特性，发展了描述爆磁压缩物理过程的2维爆轰磁流体力学程序——MFCG（Ⅴ），并用其分析、计算了一系列模型。通过将计算结果与柱-柱构型的结果进行比较，表明了柱-锥构型更有利于功率放大：在同样的输出电流条件下，不仅爆磁压缩的时间缩短，而且输出功率也相应地增加。MFCG（Ⅴ）程序的建立以及相应的数值模拟结果有助于加深对柱-锥构型的爆磁压缩发生器物理过程的认识，并为实验设计提供参考。     

基于低功耗双边沿JK触发器的异步时序电路设计

从JK触发器的激励表出发,介绍了基于单边沿JK触发器的同步时序电路和异步时序电路设计,提出了双边沿JK触发器的完整状态方程,并以此为基础讨论了基于双边沿JK触发器的异步时序电路的设计方法.     

有源介观LC电路中电源对量子涨落的影响

从有源ＬＣ电路运动方程出发，通过量子化有源ＬＣ电路和计算电压、电流的量子涨落，研究了电源对量子涨落的影响。     

分数阶临界混沌系统及电路实验的研究

研究了分数阶临界混沌系统，设计了其分数阶电路结构.通过计算机仿真分析和电路实验，证实了分数阶临界混沌系统的混沌动力学行为. 关键词： 分数阶 临界混沌系统 电路     

Generation of Chaotic Beats in a Modified Chua's Circuit Part II: Circuit Design

This paper and the companion one [Cafagna, D., and Grassi, G., Nonlinear Dynamics, this issue] describe the new phenomenon of chaotic beats in a modified version of the Chua's circuit, driven by two sinusoidal inputs with slightly different frequencies. In particular, this paper presents the circuit design, including a novel implementation of the Chua diode, and investigates the beats phenomenon generated by the considered circuit.     

集值向量变分不等式的严格可行性与可解性

本文研究集值向量变分不等式的严格可行性与可解性之间的关系．证明了如下结果:在一定条件下,只要集值向量变分不等式是严格可行的,那么其一定可解．     

极大外平面图的不可定向强最大亏格

强嵌入猜想称:任意2-连通图都可以强嵌入到某一曲面上．本文通过分析极大外平面图的结构以及强嵌入的特征,讨论了该图类的不可定向强最大亏格,并给出了一个复杂度为O(nlogn)的算法．其中部分图类的强最大亏格嵌入提供该图的一个少双圈覆盖．