CHAOS: All Topics http://scitation.aip.org/ CHAOS: All Topics Geometric and dynamic perspectives on phase-coherent and noncoherent chaos http://link.aip.org/link/?CHA/22/013115/1&agg=rss Yong Zou, Reik V. Donner, and Jurgen Kurths<br/> Statistically distinguishing between phase-coherent and noncoherent chaotic dynamics from time series is a contemporary problem in nonlinear sciences. In this work, we propose different measures based on recurrence properties of recorded trajectories, which characterize the underlying systems from b ... [Chaos 22, 013115 (2012)] published Thu Feb 2, 2012. Multistability of twisted states in non-locally coupled Kuramoto-type models http://link.aip.org/link/?CHA/22/013114/1&agg=rss Taras Girnyk, Martin Hasler, and Yuriy Maistrenko<br/> A ring of N identical phase oscillators with interactions between L-nearest neighbors is considered, where L ranges from 1 (local coupling) to N/2 (global coupling). The coupling function is a simple sinusoid, as in the Kuramoto model, but with a minus sign which has a profound influence on its beha ... [Chaos 22, 013114 (2012)] published Thu Feb 2, 2012. Symmetry chaotic attractors and bursting dynamics of semiconductor lasers subjected to optical injection http://link.aip.org/link/?CHA/22/013113/1&agg=rss A. D. Mengue and B. Z. Essimbi<br/> This paper presents the nonlinear dynamics and bifurcations of optically injected semiconductor lasers in the frame of relative high injection strength. The behavior of the system is explored by means of bifurcation diagrams; however, the exact nature of the involved dynamics is well described by a ... [Chaos 22, 013113 (2012)] published Wed Feb 1, 2012. Vibrational resonance in Duffing systems with fractional-order damping http://link.aip.org/link/?CHA/22/013112/1&agg=rss J. H. Yang and H. Zhu<br/> The phenomenon of vibrational resonance (VR) is investigated in over- and under-damped Duffing systems with fractional-order damping. It is found that the factional-order damping can induce change in the number of the steady stable states and then lead to single- or double-resonance behavior. Compar ... [Chaos 22, 013112 (2012)] published Fri Jan 27, 2012. Using time-delayed mutual information to discover and interpret temporal correlation structure in complex populations http://link.aip.org/link/?CHA/22/013111/1&agg=rss D. J. Albers and George Hripcsak<br/> This paper addresses how to calculate and interpret the time-delayed mutual information (TDMI) for a complex, diversely and sparsely measured, possibly non-stationary population of time-series of unknown composition and origin. The primary vehicle used for this analysis is a comparison between the t ... [Chaos 22, 013111 (2012)] published Tue Jan 24, 2012. Theoretical analysis of multiplicative-noise-induced complete synchronization in global coupled dynamical network http://link.aip.org/link/?CHA/22/013110/1&agg=rss Yuzhu Xiao, Sufang Tang, and Yong Xu<br/> In this paper, based on the theory of stochastic differential equation, we study the effect of noise on the synchronization of global coupled dynamical network, when noise presents in coupling term. The theoretical result shows that noise can really induce synchronization. To verify the theoretical ... [Chaos 22, 013110 (2012)] published Tue Jan 24, 2012. Analytical properties of horizontal visibility graphs in the Feigenbaum scenario http://link.aip.org/link/?CHA/22/013109/1&agg=rss Bartolo Luque, Lucas Lacasa, Fernando J. Ballesteros, and Alberto Robledo<br/> Time series are proficiently converted into graphs via the horizontal visibility (HV) algorithm, which prompts interest in its capability for capturing the nature of different classes of series in a network context. We have recently shown [B. Luque et al., PLoS ONE 6, 9 (2011)] that dynamical system ... [Chaos 22, 013109 (2012)] published Tue Jan 24, 2012. Fractal variability: An emergent property of complex dissipative systems http://link.aip.org/link/?CHA/22/013108/1&agg=rss Andrew J. E. Seely and Peter Macklem<br/> The patterns of variation of physiologic parameters, such as heart and respiratory rate, and their alteration with age and illness have long been under investigation; however, the origin and significance of scale-invariant fractal temporal structures that characterize healthy biologic variability re ... [Chaos 22, 013108 (2012)] published Thu Jan 19, 2012. Multiscale characterization of recurrence-based phase space networks constructed from time series http://link.aip.org/link/?CHA/22/013107/1&agg=rss Ruoxi Xiang, Jie Zhang, Xiao-Ke Xu, and Michael Small<br/> Recently, a framework for analyzing time series by constructing an associated complex network has attracted significant research interest. One of the advantages of the complex network method for studying time series is that complex network theory provides a tool to describe either important nodes, o ... [Chaos 22, 013107 (2012)] published Tue Jan 17, 2012. Saddle-point solutions and grazing bifurcations in an impacting system http://link.aip.org/link/?CHA/22/013106/1&agg=rss Joanna F. Mason and Petri T. Piiroinen<br/> This paper focuses on the intricate relationship between smooth and nonsmooth phenomena in an impacting system. In particular a boundary saddle-point solution, that is born in a nonsmooth fold, is analysed. Accessible boundary saddle-point solutions play a key role in determining the global dynamics ... [Chaos 22, 013106 (2012)] published Fri Jan 13, 2012. Transcripts: An algebraic approach to coupled time series http://link.aip.org/link/?CHA/22/013105/1&agg=rss Jose M. Amigo, Roberto Monetti, Thomas Aschenbrenner, and Wolfram Bunk<br/> Ordinal symbolic dynamics is based on ordinal patterns. Its tools include permutation entropy (in metric and topological versions), forbidden patterns, and a number of mathematical results that make this sort of symbolic dynamics appealing both for theoreticians and practitioners. In particular, ord ... [Chaos 22, 013105 (2012)] published Fri Jan 13, 2012. Propagation of spiking regularity and double coherence resonance in feedforward networks http://link.aip.org/link/?CHA/22/013104/1&agg=rss Cong Men, Jiang Wang, Ying-Mei Qin, Bin Deng, Kai-Ming Tsang et al.<br/> We investigate the propagation of spiking regularity in noisy feedforward networks (FFNs) based on FitzHugh-Nagumo neuron model systematically. It is found that noise could modulate the transmission of firing rate and spiking regularity. Noise-induced synchronization and synfire-enhanced coherence r ... [Chaos 22, 013104 (2012)] published Tue Jan 10, 2012. Resonance phenomena and long-term chaotic advection in volume-preserving systems http://link.aip.org/link/?CHA/22/013103/1&agg=rss Dmitri L. Vainchtein and Alimu Abudu<br/> Creating chaotic advection is the most efficient strategy to achieve mixing on microscale or in very viscous fluids. In this paper, we present a quantitative theory of the long-time resonant mixing in 3D near-integrable flows. We use the flow between two coaxial elliptic counter-rotating cylinders a ... [Chaos 22, 013103 (2012)] published Tue Jan 3, 2012. Multiscale dynamics in communities of phase oscillators http://link.aip.org/link/?CHA/22/013102/1&agg=rss Dustin Anderson, Ari Tenzer, Gilad Barlev, Michelle Girvan, Thomas M. Antonsen et al.<br/> We investigate the dynamics of systems of many coupled phase oscillators with heterogeneous frequencies. We suppose that the oscillators occur in M groups. Each oscillator is connected to other oscillators in its group with attractive coupling, such that the coupling promotes synchronization within ... [Chaos 22, 013102 (2012)] published Tue Jan 3, 2012. A common repressor pool results in indeterminacy of extrinsic noise http://link.aip.org/link/?CHA/21/047523/1&agg=rss Michail Stamatakis, Rhys M. Adams, and Gabor Balazsi<br/> For just over a decade, stochastic gene expression has been the focus of many experimental and theoretical studies. It is now widely accepted that noise in gene expression can be decomposed into extrinsic and intrinsic components, which have orthogonal contributions to the total noise. Intrinsic noi ... [Chaos 21, 047523 (2011)] published Thu Dec 29, 2011. Unstable periodic orbits and noise in chaos computing http://link.aip.org/link/?CHA/21/047520/1&agg=rss Behnam Kia, Anna Dari, William L. Ditto, and Mark L. Spano<br/> Different methods to utilize the rich library of patterns and behaviors of a chaotic system have been proposed for doing computation or communication. Since a chaotic system is intrinsically unstable and its nearby orbits diverge exponentially from each other, special attention needs to be paid to t ... [Chaos 21, 047520 (2011)] published Thu Dec 29, 2011. Testing resonating vector strength: Auditory system, electric fish, and noise http://link.aip.org/link/?CHA/21/047508/1&agg=rss J. Leo van Hemmen, Andre Longtin, and Andreas N. Vollmayr<br/> Quite often a response to some input with a specific frequency nu can be described through a sequence of discrete events. Here, we study the synchrony vector, whose length stands for the vector strength, and in doing so focus on neuronal response in terms of spike times. The latter are supposed to b ... [Chaos 21, 047508 (2011)] published Thu Dec 29, 2011. Huygens (and others) revisited http://link.aip.org/link/?CHA/21/047515/1&agg=rss Kurt Wiesenfeld and Daniel Borrero-Echeverry<br/> We develop a generic iterative map model of coupled oscillators based on simple physical processes common to many such systems. The model allows us to understand, from a unified perspective, the range of different outcomes reported for experiments by Huygens and modern realizations of his two couple ... [Chaos 21, 047515 (2011)] published Thu Dec 29, 2011. Key role of time-delay and connection topology in shaping the dynamics of noisy genetic regulatory networks http://link.aip.org/link/?CHA/21/047522/1&agg=rss X. L. Yang, D. V. Senthilkumar, Z. K. Sun, and J. Kurths<br/> This paper focuses on a paced genetic regulatory small-world network with time-delayed coupling. How the dynamical behaviors including temporal resonance and spatial synchronization evolve under the influence of time-delay and connection topology is explored through numerical simulations. We reveal ... [Chaos 21, 047522 (2011)] published Thu Dec 29, 2011. Synchronization analysis of voltage-sensitive dye imaging during focal seizures in the rat neocortex http://link.aip.org/link/?CHA/21/047506/1&agg=rss Daisuke Takeshita and Sonya Bahar<br/> Seizures are often assumed to result from an excess of synchronized neural activity. However, various recent studies have suggested that this is not necessarily the case. We investigate synchronization during focal neocortical seizures induced by injection of 4-aminopyridine (4AP) in the rat neocort ... [Chaos 21, 047506 (2011)] published Thu Dec 29, 2011. Logical stochastic resonance with correlated internal and external noises in a synthetic biological logic block http://link.aip.org/link/?CHA/21/047521/1&agg=rss Anna Dari, Behnam Kia, Adi R. Bulsara, and William L. Ditto<br/> Following the advent of synthetic biology, several gene networks have been engineered to emulate digital devices, with the ability to program cells for different applications. In this work, we adapt the concept of logical stochastic resonance to a synthetic gene network derived from a bacteriophage ... [Chaos 21, 047521 (2011)] published Thu Dec 29, 2011.