Showing papers in "Physics Letters A in 2014"

TL;DR: In this article, the effects of the nanoparticle volume fraction, Reynolds number, expansion ratio and power law index on Hydrothermal behavior of nanofluid fluid between two parallel plates is studied.

TL;DR: For short time series analyses, it is demonstrated that RCMSE increases the accuracy of entropy estimation and reduces the probability of inducing undefined entropy.

TL;DR: In this paper, the electronic sensitivity of pristine, Ni- and Si-doped graphynes to ammonia (NH3) molecule was investigated using density functional theory, including dispersion correction, and it was found that NH3 is weakly adsorbed on the sheet, releasing energy of 2.9-4.4 kcal/mol.

TL;DR: In this article, the electronic properties of ABX 3 type compounds in the cubic phase are systematically studied using the first-principles calculations, and the chemical trend of their properties as A or B or X varies is fully investigated.

TL;DR: This paper investigates the modeling of coopetition networks and the collective dynamics on such networks with the help of the structural balance theory and results are provided to demonstrate the emergence of diverse collective behaviors on coop competition networks.

TL;DR: In this article, the fractional standard and sine maps are proposed by using the discrete fractional calculus and the chaos behaviors are then numerically discussed when the difference order is a fractional one.

TL;DR: It is found that the epidemic can spread across the multiplex network even if all the network layers are well below their respective epidemic thresholds.

TL;DR: In this paper, the viscosity of nanofluids as a function of nanoparticle size and material is modeled and analyzed, and it is shown that the volume concentration of nanoparticles is varied from 1% to 12%.

TL;DR: In this article, a regime of three-dimensional dissipative chaotic flows in which all but one of the nonlinearities are quadratic is considered, and the simplest such systems are determined and their equilibria and stability are described.

TL;DR: The authors acknowledge the support of the Australian Research Council (Discovery project DP110102068) and also thank the Volkswagen Foundation for financial support, and also N.A.A and N.

TL;DR: In this paper, the mathematical models of Jeffrey fluid via nanoparticles in the tapered stenosed atherosclerotic arteries were discussed and the convection effects of heat transfer with catheter were also taken into account.

TL;DR: In this article, the authors examined how the correlation and network structure of the global indices and local Korean indices have changed during years 2000-2012 and found that the average correlations of global indices increased with time, while the local indices showed a decreasing trend except for drastic changes during the crises.

TL;DR: In this paper, a set of 3D general solutions to static problems of 1D hexagonal piezoelectric quasicrystals is obtained by introducing two displacement functions and utilizing the rigorous operator theory.

TL;DR: Based on the skew information, a quantity, uncertainty-induced quantum nonlocality (UIN), was proposed in this article to measure the quantum correlation, which can be considered as the updated version of the original measurement-induced non-locality preserving the good computability but eliminating the non-contractivity problem.

TL;DR: In this article, the Hofstadter butterfly spectrum was obtained and the existence of phase transition from extended to localized states was discussed, and it was shown that rapidly changing periodical gain/loss materials almost conserve the total intensity.

TL;DR: In this paper, a symmetrical squared tangent potential well is studied by examining its Shannon information entropy and standard deviations, and the position and momentum information entropy densities ρ s ( x ), ρ S ( p ) and probability densities are illustrated with different potential range L and potential depth U. The authors observed that the sum of position information entropies S x and S p expressed by Bialynicki-Birula-Mycielski inequality is satisfied.

TL;DR: In this paper, the properties and reactivity of Si-doped hexagonal boron nitride (h-BN) sheets were studied using density functional theory (DFT) methods.

TL;DR: In this paper, the effect of lattice strain on the oxygen vacancy formation at CeO2(111) surface has been investigated using first-principles calculation, showing that the adsorption strength monotonously increases with the increase of the lattice straining.

TL;DR: In this article, the stability of the Whitham equation with respect to the frequency of traveling-wave solutions has been investigated, and it was shown that large-amplitude solutions are unstable, while small-AMPLitude solutions with large enough wavelength L are stable.

TL;DR: In this paper, a special composition of tritium and 3 He fuel is identified to have vanishing net diffusion during adiabatic compression, and hence provides an experimental test in which yield degradation is minimized during ICF implosions.

TL;DR: In this article, two kinds of silicone grease containing graphene nanoplatelets or reduced graphene oxide were prepared, and their thermophysical properties have been investigated, and the experimental result is in excellent agreement with the recently developed theoretical model analyzing the thermal conductivity of isotropic composites containing randomly embedded GNPs.

TL;DR: In this article, the porosity and pore size of open-cell foams were analyzed as a function of two morphological parameters, and the authors showed that dimensionless permeability significantly increases as the porososity of isotropic porous media increases.

TL;DR: In this paper, it was shown that for an integer value of the spectral parameter x, in addition to the finite number of the classical Judd states there exist infinitely many possible eigenstates.

TL;DR: Detailed analysis of two representative metrics, outbreak threshold and epidemic prevalence, on SIS and SIR models are performed and experiments show that, on fully mixed networks, the weight distribution on edges would not affect the epidemic results once the average weight of whole network is fixed.

TL;DR: In this paper, the adaptive fuzzy fitness granulation (AFFG) was used to design the phononic crystals with large relative bandgap width (BGW) for combined out-of-plane and in-plane wave modes.

TL;DR: In this paper, the authors observed riddled-like complicated basins of coexisting hidden attractors both in coupled and uncoupled systems and observed a new route to amplitude death in time-delay coupled hidden attractor systems.

TL;DR: In this paper, the authors explore the form of rogue wave solutions in a select set of case examples of nonlinear Schrodinger equations with variable coefficients, and present three different models that describe atomic Bose-Einstein condensates in different experimentally relevant settings.

TL;DR: In this paper, the collective behavior of soliton ensembles is studied using the methods of the direct numerical simulation, and some high resolution numerical results are presented in both integrable and nonintegrable cases.

TL;DR: In this paper, the relation between flow and density is an essential quantitative characteristic to describe the efficiency of traffic systems, and the authors performed experiments with single-file motion of bicycles and compared the results with previous studies for car and pedestrian motion.

TL;DR: In this article, the quantum Fisher information (QFI) of W states in the basic decoherence channels was studied and it was shown that under depolarizing and phase damping, QFI is zero for all non-zero decoherent W states.