CHAOS: All Topics http://scitation.aip.org/ CHAOS: All Topics Chaoticity of the blood cell production system http://link.aip.org/link/?CHA/19/043112/1&agg=rss Ryszard Rudnicki<br/> We present a structured model of stem cells given by a partial differential equation. This equation generates a semiflow acting on the set of densities. We show that this semiflow possesses an invariant exact measure positive on open sets. From this it follows that the system is chaotic, i.e., it ha ... [Chaos 19, 043112 (2009)] published Fri Nov 6, 2009. Erratum: A partial synchronization theorem [Chaos 18, 037107 (2008)] http://link.aip.org/link/?CHA/19/049901/1&agg=rss Alexander Yu. Pogromsky<br/> This erratum corrects a mistake previously published by the author [A. Y. Pogromsky, Chaos 18, 037107 (2008)]. ... [Chaos 19, 049901 (2009)] published Tue Nov 3, 2009. Bifurcation and chaos in spin-valve pillars in a periodic applied magnetic field http://link.aip.org/link/?CHA/19/043111/1&agg=rss S. Murugesh and M. Lakshmanan<br/> We study the bifurcation and chaos scenario of the macromagnetization vector in a homogeneous nanoscale-ferromagnetic thin film of the type used in spin-valve pillars. The underlying dynamics is described by a generalized LandauLifshitzGilbert (LLG) equation. The LLG equation has an especially appea ... [Chaos 19, 043111 (2009)] published Tue Nov 3, 2009. Accurate noise projection for reduced stochastic epidemic models http://link.aip.org/link/?CHA/19/043110/1&agg=rss Eric Forgoston, Lora Billings, and Ira B. Schwartz<br/> We consider a stochastic susceptible-exposed-infected-recovered (SEIR) epidemiological model. Through the use of a normal form coordinate transform, we are able to analytically derive the stochastic center manifold along with the associated, reduced set of stochastic evolution equations. The transfo ... [Chaos 19, 043110 (2009)] published Thu Oct 29, 2009. Generating ensembles of two-dimensional granular configurations http://link.aip.org/link/?CHA/19/041108/1&agg=rss James G. Puckett, Frederic Lechenault, and Karen E. Daniels<br/> Abstract not available. [Chaos 19, 041108 (2009)] published Tue Oct 27, 2009. Rupture and clustering in granular streams http://link.aip.org/link/?CHA/19/041103/1&agg=rss John R. Royer, Loreto Oyarte, Matthias E. Mobius, and Heinrich M. Jaeger<br/> Abstract not available. [Chaos 19, 041103 (2009)] published Tue Oct 27, 2009. The mayonnaise droplet http://link.aip.org/link/?CHA/19/041105/1&agg=rss D. Terwagne, N. Mack, S. Dorbolo, T. Gilet, J.-Y. Raty et al.<br/> Abstract not available. [Chaos 19, 041105 (2009)] published Tue Oct 27, 2009. VORO++: A three-dimensional Voronoi cell library in C++ http://link.aip.org/link/?CHA/19/041111/1&agg=rss Chris H. Rycroft<br/> Abstract not available. [Chaos 19, 041111 (2009)] published Tue Oct 27, 2009. Unstable Kolmogorov flow in granular matter http://link.aip.org/link/?CHA/19/041106/1&agg=rss Klaus Roeller, Jurgen Vollmer, and Stephan Herminghaus<br/> Abstract not available. [Chaos 19, 041106 (2009)] published Tue Oct 27, 2009. Superlattice patterns in forced thermal convection http://link.aip.org/link/?CHA/19/041102/1&agg=rss G. Seiden, S. Weiss, and E. Bodenschatz<br/> Abstract not available. [Chaos 19, 041102 (2009)] published Tue Oct 27, 2009. Homogenous dislocation nucleation http://link.aip.org/link/?CHA/19/041112/1&agg=rss Asad Hasan and Craig E. Maloney<br/> Abstract not available. [Chaos 19, 041112 (2009)] published Tue Oct 27, 2009. Fixed points, stable manifolds, weather regimes, and their predictability http://link.aip.org/link/?CHA/19/043109/1&agg=rss Bruno Deremble, Fabio D'Andrea, and Michael Ghil<br/> In a simple, one-layer atmospheric model, we study the links between low-frequency variability and the model's fixed points in phase space. The model dynamics is characterized by the coexistence of multiple weather regimes. To investigate the transitions from one regime to another, we focus on the i ... [Chaos 19, 043109 (2009)] published Tue Oct 27, 2009. Visualization of communities in networks http://link.aip.org/link/?CHA/19/041104/1&agg=rss Amanda L. Traud, Christina Frost, Peter J. Mucha, and Mason A. Porter<br/> Abstract not available. [Chaos 19, 041104 (2009)] published Tue Oct 27, 2009. The adventures of Dicty, the Dictyostelium cell http://link.aip.org/link/?CHA/19/041110/1&agg=rss Meghan Driscoll, Rael Kopace, Linjie Li, Colin McCann, John Watts et al.<br/> Abstract not available. [Chaos 19, 041110 (2009)] published Tue Oct 27, 2009. X-ray computerized tomography scan of crumpled aluminum sheet http://link.aip.org/link/?CHA/19/041109/1&agg=rss Anne Dominique Cambou and Narayanan Menon<br/> Abstract not available. [Chaos 19, 041109 (2009)] published Tue Oct 27, 2009. Force network ensemble for the triangular lattice: A tale of tiles http://link.aip.org/link/?CHA/19/041107/1&agg=rss Brian P. Tighe, Adrianne R. T. van Eerd, and Thijs J. H. Vlugt<br/> Abstract not available. [Chaos 19, 041107 (2009)] published Tue Oct 27, 2009. Introduction: Sixth Annual Gallery of Nonlinear Images (Pittsburgh, Pennsylvania, 2009) http://link.aip.org/link/?CHA/19/041101/1&agg=rss Predrag Cvitanovic, Karen E. Daniels, Arshad Kudrolli, Wolfgang Losert, and Sidney Redner<br/> Abstract not available. [Chaos 19, 041101 (2009)] published Tue Oct 27, 2009. Transport properties in nontwist area-preserving maps http://link.aip.org/link/?CHA/19/043108/1&agg=rss J. D. Szezech, Jr., I. L. Caldas, S. R. Lopes, R. L. Viana, and P. J. Morrison<br/> Nontwist systems, common in the dynamical descriptions of fluids and plasmas, possess a shearless curve with a concomitant transport barrier that eliminates or reduces chaotic transport, even after its breakdown. In order to investigate the transport properties of nontwist systems, we analyze the ba ... [Chaos 19, 043108 (2009)] published Fri Oct 23, 2009. The impact of risk-averse operation on the likelihood of extreme events in a simple model of infrastructure http://link.aip.org/link/?CHA/19/043107/1&agg=rss B. A. Carreras, D. E. Newman, Ian Dobson, and Matthew Zeidenberg<br/> A simple dynamic model of agent operation of an infrastructure system is presented. This system evolves over a long time scale by a daily increase in consumer demand that raises the overall load on the system and an engineering response to failures that involves upgrading of the components. The syst ... [Chaos 19, 043107 (2009)] published Tue Oct 20, 2009. The compass rose pattern in electricity prices http://link.aip.org/link/?CHA/19/043106/1&agg=rss Jonathan A. Batten and Mahmoud Hamada<br/> The compass rose pattern is known to appear in the phase portraits, or scatter diagrams, of the high-frequency returns of financial series. We first show that this pattern is also present in the returns of spot electricity prices. Early researchers investigating these phenomena hoped that these patt ... [Chaos 19, 043106 (2009)] published Fri Oct 16, 2009. Two routes to the one-dimensional discrete nonpolynomial Schrodinger equation http://link.aip.org/link/?CHA/19/043105/1&agg=rss G. Gligoric, A. Maluckov, L. Salasnich, B. A. Malomed, and Lj. Hadzievski<br/> The BoseEinstein condensate (BEC), confined in a combination of the cigar-shaped trap and axial optical lattice, is studied in the framework of two models described by two versions of the one-dimensional (1D) discrete nonpolynomial Schrodinger equation (NPSE). Both models are derived from the three- ... [Chaos 19, 043105 (2009)] published Thu Oct 15, 2009. Identical phase oscillators with global sinusoidal coupling evolve by Mobius group action http://link.aip.org/link/?CHA/19/043104/1&agg=rss Seth A. Marvel, Renato E. Mirollo, and Steven H. Strogatz<br/> Systems of N identical phase oscillators with global sinusoidal coupling are known to display low-dimensional dynamics. Although this phenomenon was first observed about 20 years ago, its underlying cause has remained a puzzle. Here we expose the structure working behind the scenes of these systems ... [Chaos 19, 043104 (2009)] published Thu Oct 15, 2009. Permutations and time series analysis http://link.aip.org/link/?CHA/19/043103/1&agg=rss Jose S. Canovas and Antonio Guillamon<br/> The main aim of this paper is to show how the use of permutations can be useful in the study of time series analysis. In particular, we introduce a test for checking the independence of a time series which is based on the number of admissible permutations on it. The main improvement in our tests is ... [Chaos 19, 043103 (2009)] published Tue Oct 13, 2009. Chaos and crises in a model for cooperative hunting: A symbolic dynamics approach http://link.aip.org/link/?CHA/19/043102/1&agg=rss Jorge Duarte, Cristina Januario, Nuno Martins, and Josep Sardanyes<br/> In this work we investigate the population dynamics of cooperative hunting extending the McCann and Yodzis model for a three-species food chain system with a predator, a prey, and a resource species. The new model considers that a given fraction sigma of predators cooperates in prey's hunting, while ... [Chaos 19, 043102 (2009)] published Mon Oct 12, 2009.