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一个用于检测微弱复信号的新Duffing 型复混沌振子
复Duffing 方程 混沌检测 微弱复信号 信噪比 检测概率
2013/8/26
针对数字通信和雷达等系统数字处理过程中经常使用的复信号, 提出一个新的复Duffing 方程, 分析了其动力学行为. 通过计算最大李氏指数和功率谱, 证明该系统在不同参数下经暂态到达稳态后存在混沌行为和大尺度周期行为. 基于此方程提出一种Duffing 型复混沌振子检测系统, 它利用混沌系统在临界混沌状态下对参数的敏感性及对一定功率范围内的噪声具有免疫力的特性来检测湮没在复高斯白噪声中的微弱复信号...
Chaotic behavior of ion exchange phenomena in polymer gel electrolytes through irradiated polymeric membrane
Porous membrane ion channels polymer gel electrolyte non linear dynamics ion exchange
2012/4/26
A desktop experiment has been done to show the nonlinearity in the I-V characteristics of an ion conducting electrochemical micro-system. Its chaotic dynamics is being reported for the first time whic...
Energy efficiency of information transmission by electrically coupled neurons
neurons coding energy mutual information energy Chaotic Dynamics
2012/4/26
The generation of spikes by neurons is energetically a costly process. This paper studies the consumption of energy and the information entropy in the signalling activity of a model neuron both when i...
Phase transition in crowd synchrony of delay-coupled multilayer laser networks
Phase transition crowd synchrony delay-coupled multilayer laser networks Chaotic Dynamics
2012/4/26
An analogy between crowd synchrony and multi-layer neural network architectures is proposed. It indicates that many non-identical dynamical elements (oscillators) communicating indirectly via a few me...
Kneadings, Symbolic Dynamics and Painting Lorenz Chaos. A Tutorial
kneading invariant symbolic dynamics T-points Lorenz attractor chaos homoclinic and heteroclinic orbits
2012/4/26
A new computational technique based on the symbolic description utilizing kneading invariants is proposed and verified for explorations of dynamical and parametric chaos in a few exemplary systems wit...
On finite-size Lyapunov exponents in multiscale systems
Finite-size Lyapunov exponents predictability ensemble generation regimes metastability
2012/4/26
We study the effect of regime switches on finite size Lyapunov exponents (FSLEs) in determining the error growth rates and predictability of multiscale systems. We consider a dynamical system involvin...
Collective Almost Synchronization in Complex Networks
Collective Almost Synchronization Complex Networks Chaotic Dynamics
2012/4/26
This work introduces the phenomenon of Collective Almost Synchronization (CAS), which describes a universal way of how patterns can appear in complex networks even for small coupling strengths. The CA...
Permutation Complexity and Coupling Measures in Hidden Markov Models
Permutation Complexity Coupling Measures Hidden Markov Models Chaotic Dynamics
2012/4/26
In [Haruna, T. and Nakajima, K., 2011. Physica D 240, 1370-1377], the authors introduced the duality between values (words) and orderings (permutations) as a basis to discuss the relationship between ...
A matched filter maximizes the signal-to-noise ratio of a signal. In the recent work of Corron et al. [Chaos 20, 023123 (2010)], a matched filter is derived for the chaotic waveforms produced by a pie...
Tippe Top Equations and Equations for the Related Mechanical Systems
tippe top rigid body nonholonomic mechanics integrals of motion stability gliding friction
2012/4/26
The equations of motion for the rolling and gliding Tippe Top (TT) are nonintegrable and difficult to analyze. The only existing arguments about TT inversion are based on analysis of stability of asym...
降低系统芯片中跨时钟域设计和验证复杂度的方法
系统芯片 验证复杂度 传输
2014/4/4
在系统芯片设计中，直接采用现有的跨时钟域信号处理方法不仅设计复杂度高而且验证难度大。为了解决这个问题，将跨时钟域设计与功能设计完全分离，在每个通信接口部件中采用独立的、专用的跨时钟域处理模块统一解决跨时钟域信号的传输问题，并通过封装点对点通信接口和合并处理同一方向的跨时钟域信号，将需要处理的跨时钟域信号的数量减少为方向相反的2组。实验结果表明，该方法能够有效降低跨时钟域设计的验证难度和系统芯片的设...
Multi-quadratic quad equations: integrable cases from a factorised-discriminant hypothesis
Multi-quadratic quad equations integrable cases factorised-discriminant hypothesis Exactly Solvable and Integrable Systems
2012/4/26
We give integrable quad equations which are multi-quadratic (degree-two) counterparts of the well-known multi-affine (degree-one) equations classified by Adler, Bobenko and Suris (ABS). These multi-qu...
Random Symmetry Breaking and Freezing in Chaotic Networks
Random Symmetry Breaking Freezing Chaotic Networks
2012/4/26
Parameter space of a driven damped oscillator in a double well potential presents either a chaotic trajectory with sign oscillating amplitude or a non-chaotic trajectory with a fixed sign amplitude. A...
Long-term fluctuations in globally coupled phase oscillators with general coupling: Finite size effects
Long-term fluctuations globally coupled phase oscillators general coupling Finite size effects Chaotic Dynamics
2012/4/26
We investigate the diffusion coefficient of the time integral of the Kuramoto order parameter in globally coupled nonidentical phase oscillators. This coefficient represents the deviation of the time ...
On the Temporal Distribution of Casualties and Determination of Medical Logistical Requirements
the Temporal Distribution of Casualties Determination of Medical Logistical Requirements
2012/4/19
It is demonstrated that World War II casualty data display statistical structure that would be expected from multifractal data. Given that the data displayed these properties, it is shown how the exis...