Showing papers in "International Journal of Modern Physics C in 2018"
TL;DR: The digital circuit and analog circuit are designed, which verify the feasibility of the circuit implement of the compound chaotic system.
Abstract: Based on the simplified Lorenz multiwing attractor and the generalized Jerk multiscroll attractor, the grid compound chaotic systems are designed via state variables exchanging, state variables sca...
39 citations
TL;DR: In this paper, a numerical investigation is carried out to analyze flow patterns, drag and lift coefficients, and vortex shedding around a square cylinder using a control circular bar upstream and downstream.
Abstract: A numerical investigation is carried out to analyze the flow patterns, drag and lift coefficients, and vortex shedding around a square cylinder using a control circular bar upstream and downstream....
33 citations
TL;DR: In this paper, the authors conduct numerical study of fluid flow and natural convection heat transfer by utilizing the nanofluid in a two-dimensional horizontal channel consisting of a sinusoidal o...
Abstract: The aim of this work is to conduct numerical study of fluid flow and natural convection heat transfer by utilizing the nanofluid in a two-dimensional horizontal channel consisting of a sinusoidal o...
32 citations
TL;DR: This paper proposes a kind of image edge detection algorithm based on improved morphological gradient that can be detect the image using structural elements, which deals with the characteristic information of the image directly.
Abstract: Traditional edge detection operators such as Prewitt operator, LOG operator and Canny operator, etc. cannot meet the requirements of the modern industrial measurement. This paper proposes a kind of image edge detection algorithm based on improved morphological gradient. It can be detect the image using structural elements, which deals with the characteristic information of the image directly. Choosing different shapes and sizes of structural elements to use together, the ideal image edge information can be detected. The experimental result shows that the algorithm can well extract image edge with noise, which is clearer, and has more detailed edges compared with the previous edge detection algorithm.
27 citations
TL;DR: In this article, a novel perspective focused on the differential quadrature method using modified cubic B-spline basis functions are applied for obtaining the numeric information, which is used in the present paper.
Abstract: In the present paper, a novel perspective fundamentally focused on the differential quadrature method using modified cubic B-spline basis functions are going to be applied for obtaining the numeric...
21 citations
TL;DR: In this article, a stress sensitivity model for the permeability of porous media based on bidispersed fractal theory is established, considering the change of the flow path, the fractal geometry approach and the me...
Abstract: A stress sensitivity model for the permeability of porous media based on bidispersed fractal theory is established, considering the change of the flow path, the fractal geometry approach and the me...
16 citations
TL;DR: In this paper, a dynamical system based on the Langevin equation without stochastic term and using fractional derivatives that exhibit properties of Brownian motion is presented, i.e. a deterministic system.
Abstract: In this paper, we present a dynamical system based on the Langevin equation without stochastic term and using fractional derivatives that exhibit properties of Brownian motion, i.e. a deterministic...
16 citations
TL;DR: The proposed algorithm is compared to other recent image encryption schemes using different security analysis factors, including NPCR, UACI, correlation coefficients (CCs), encryption quality (EQ) and entropy, and it is resistant to noise, Gaussian and speckle attacks and data loss attacks.
Abstract: In this paper, an efficient scheme for image encryption based on the nested chaotic map and deoxyribonucleic acid (DNA) is introduced. In order to generate the initial condition values of the neste...
15 citations
TL;DR: In this article, the concept of the Green's function has been extended from linear systems to nonlinear ones, and there exists a rigorous and an approximate extensio-expensio...
Abstract: During the past three decades, the advantageous concept of the Green’s function has been extended from linear systems to nonlinear ones. At that, there exists a rigorous and an approximate extensio...
15 citations
TL;DR: The results give a good proof that improving the activity of the positive news spreader derived from the [Formula: see text] model can guide and restrain the spreading speed of rumor smoothly.
Abstract: We explore the impact of positive news on rumor spreading in this paper. It is a fact that most of the rumors related to hot events or emergencies can be propagated rapidly on the hotbed of online ...
15 citations
TL;DR: A rumor spreading model that considers three main factors: the event importance, event ambiguity, and the publics critical sense, each of which are defined by decision makers using linguistic descriptions and then transformed into triangular fuzzy numbers is proposed.
Abstract: This paper proposes a rumor spreading model that considers three main factors: the event importance, event ambiguity, and the publics critical sense, each of which are defined by decision makers us...
TL;DR: In this article, an optimized fourth-order forest-ruth-like symplectic algorithm was proposed to solve inseparable Hamiltonian systems, which is based on a minimum of the norm of fifth-order truncation terms.
Abstract: An optimized fourth-order Forest–Ruth-like symplectic algorithm, which is based on a minimum of the norm of fifth-order truncation terms, was originally designed for separable Hamiltonian problems With the aid of extended phase space methods, this algorithm is further reformulated to explicitly solve inseparable Hamiltonian systems Although an extra permutation substep is included and destroys symplecticity in general, the method is symmetric and therefore resembles a symplectic integrator in conservation of the original Hamiltonian In fact, our numerical tests show that the optimized algorithm combined with the midpoint permutations always enhances the quality of numerical integrations in comparison with the corresponding nonoptimized counterpart for inseparable Hamiltonian problems As a result, the optimized algorithm is worth recommending in application
TL;DR: This work analyzes the patterns like synchrony, desynchrony, and Drum head mode in a network of Hindmarsh–Rose neurons interacting via chemical synapse in unidirectional and bidirectional star topolog...
Abstract: We analyze the patterns like synchrony, desynchrony, and Drum head mode in a network of Hindmarsh–Rose (HR) neurons interacting via chemical synapse in unidirectional and bidirectional star topolog...
TL;DR: A novel two-stage rumor propagation and refutation model with time effect for OSNs is introduced and shows that heterogeneous networks yield the most effective rumor and anti-rumor spreading.
Abstract: Rumor propagation and refutation form an important issue for spreading dynamics in online social networks (OSNs). In this paper, we introduce a novel two-stage rumor propagation and refutation mode...
TL;DR: In this article, a modified kinetic Ising model with Metropolis dynamics, called q-neighbor ising model, is investigated on random graphs, in which each spin interacts only with q spins randomly chosen fro...
Abstract: A modified kinetic Ising model with Metropolis dynamics, so-called q-neighbor Ising model, is investigated on random graphs. In this model, each spin interacts only with q spins randomly chosen fro...
TL;DR: In this article, a variational model for opinion dynamics based on pairwise interaction potentials and a range of opinion evolution protocols ranging from random interactions to random interactions is introduced. But the model is not suitable for the analysis of opinion dynamics.
Abstract: We introduce a new, and quite general variational model for opinion dynamics based on pairwise interaction potentials and a range of opinion evolution protocols ranging from random interactions to ...
TL;DR: A new membrane algorithm is proposed to solve the community detection in complex networks based on membrane systems, which consists of objects, reaction rules, and a membrane structure.
Abstract: Community detection in complex networks is a key problem of network analysis. In this paper, a new membrane algorithm is proposed to solve the community detection in complex networks. The proposed ...
TL;DR: In this article, the Ising-Vanniminus model on an arbitrary-order Cayley tree is considered and generalization of the results conjectured by Akin [Chinese J. Phys. 54(4), 635-649 (2016) and Int. J. Mod.
Abstract: In this paper, we consider the Ising-Vanniminus model on an arbitrary-order Cayley tree. We generalize the results conjectured by Akin [Chinese J. Phys. 54(4), 635–649 (2016) and Int. J. Mod. Phys....
TL;DR: In this article, the steady-state dynamics of a two-channel TASEP coupled with Langmuir kinetics in the presence of a localized bottleneck are investigated under a fully asymmetric lane-changing rule.
Abstract: The steady-state dynamics of a two-channel TASEP coupled with Langmuir kinetics in the presence of a localized bottleneck are investigated under a fully asymmetric lane-changing rule. A hybrid mean...
TL;DR: The proposed algorithm, named label propagation algorithm based on community belonging degree (LPA-CBD), has lower algorithm complexity and higher community detection quality, but also improves the stability of the originallabel propagation algorithm.
Abstract: In order to deal with stochasticity in center node selection and instability in community detection of label propagation algorithm, this paper proposes an improved label propagation algorithm named label propagation algorithm based on community belonging degree (LPA-CBD) that employs community belonging degree to determine the number and the center of community. The general process of LPA-CBD is that the initial community is identified by the nodes with the maximum degree, and then it is optimized or expanded by community belonging degree. After getting the rough structure of network community, the remaining nodes are labeled by using label propagation algorithm. The experimental results on 10 real-world networks and three synthetic networks show that LPA-CBD achieves reasonable community number, better algorithm accuracy and higher modularity compared with other four prominent algorithms. Moreover, the proposed algorithm not only has lower algorithm complexity and higher community detection quality, but ...
TL;DR: In this paper, a representation formula for second-order nonhomogeneous nonlinear ordinary differential equations (ODEs) has been constructed by M. Frasca using its Green's function.
Abstract: A representation formula for second-order nonhomogeneous nonlinear ordinary differential equations (ODEs) has been recently constructed by M. Frasca using its Green’s function, i.e. the solution of...
TL;DR: In this article, a simple model of social contagion that aims to represent the dynamics of social influences among politicians in an artificial corrupt parliament is proposed, where an agent-based approach is used.
Abstract: In this work, we study a simple model of social contagion that aims to represent the dynamics of social influences among politicians in an artificial corrupt parliament. We consider an agent-based ...
TL;DR: A stochastic win-stay-lose-learn in which an individual is more likely to imitate one of its nearest neighbor’s strategy if its aspiration is not achieved is proposed.
Abstract: In this paper, we propose a stochastic win-stay-lose-learn in which an individual is more likely to imitate one of its nearest neighbor’s strategy if its aspiration is not achieved. The results on ...
TL;DR: In this article, the authors reported the solution of generalized Rosenau-Kawahara-RLW equation, which includes motion of single solitary wave, interaction of two solitary waves along with the calculated invariants and error norms.
Abstract: Present study reports the solution of generalized Rosenau–Kawahara-RLW equation. It includes motion of single solitary wave, interaction of two solitary waves along with the calculated invariants and error norms. Gaussian and undular bore initial conditions are studied to show evolution of solitons. Developed train of solitons and conservation of invariants are shown via figures and tables in the respective sections. Various case studies are presented to demonstrate the efficiency of the proposed numerical scheme. Solutions so produced may be helpful for explaining various nonlinear physical phenomena in nonlinear dynamical systems.
TL;DR: In this article, the authors considered the entire mean first-passage time (EMFPT) with random walks for Cayley networks, and they used Laplacian spectra to calculate the EMFPT.
Abstract: In this paper, we consider the entire mean first-passage time (EMFPT) with random walks for Cayley networks. We use Laplacian spectra to calculate the EMFPT. Firstly, we calculate the constant term and monomial coefficient of characteristic polynomial. By using the Vieta theorem, we then obtain the sum of reciprocals of all nonzero eigenvalues of Laplacian matrix. Finally, we obtain the scaling of the EMFPT for Cayley networks by using the relationship between the sum of reciprocals of all nonzero eigenvalues of Laplacian matrix and the EMFPT. We expect that our method can be adapted to other types of self-similar networks, such as vicsek networks, polymer networks.
TL;DR: In this article, structural optimization of ternary PdmPt(13−m)Ag42 nanoalloys was performed using the basin-hopping algorithm, and the Gupta many-body potential was adopted to model interatomic interaction.
Abstract: Structural optimization of ternary PdmPt(13−m)Ag42 nanoalloys was performed using the basin-hopping algorithm, and the Gupta many-body potential was adopted to model interatomic interaction. The op...
TL;DR: In this article, lattice Boltzmann method (LBM) simulation is performed to investigate laminar forced convection of nanofluids in a horizontal parallel-plate channel with three rectangular cavities.
Abstract: In this study, lattice Boltzmann method (LBM) simulation is performed to investigate laminar forced convection of nanofluids in a horizontal parallel-plate channel with three rectangular cavities. Two cavities are considered as located on the top wall of the channel and one on the bottom wall. The effects of the Reynolds number (100–400), the cavity aspect ratio (AR = 0.25, 0.5), the various distances of the cavities from each other (Xc′) at different solid volume fractions of nanofluids (ϕ=0−0.05) on the velocity and the temperature profiles of the nanofluids are studied. In addition, the flow patterns, i.e. the deflection and re-circulation zone inside the cavities, and the local and averaged Nusselt numbers on the channel walls are calculated. The results obtained are used to ascertain the validity of the written numerical code, which points to the excellent agreement across the results. The results show that, as the solid volume fraction of nanofluids is enhanced, the transfer of heat to working fluid...
TL;DR: The designed adaptive update law for intermittent feedback control gain does not explicitly depend on time, which makes the adaptive nonperiodical intermittent control technique more convenient to implement in realistic applications.
Abstract: In this paper, adaptive exponential synchronization of directed networks with complex-variable systems and distributed delays coupling is investigated. An adaptive nonperiodical intermittent contro...
TL;DR: A new feedback strategy named Accidents Coefficient Feedback Strategy (ACFS) is proposed in which dynamic information can be generated and displayed on a board at the entrance of two-route scenario with intersection to help drivers to choose the appropriate road.
Abstract: Various feedback strategies are proposed to improve the traffic flow However, most of these works did not take road safety into consideration In this paper, we studied the impact of four feedback strategies on the probability of rear-end collisions (Pac) We proposed a new feedback strategy named Accidents Coefficient Feedback Strategy (ACFS) in which dynamic information can be generated and displayed on a board at the entrance of two-route scenario with intersection to help drivers to choose the appropriate road This new strategy can greatly improve road safety and make the flow smooth as possible at the same time Moreover, the impact of the intersection and boundary rates (α and β) on Pac is also studied
TL;DR: A modified cellular automata traffic model is proposed to simulate four-lane traffic flow, in which drivers are classified into aggressive drivers and cautious drivers and the anticipative velocity of the adjacent vehicles is considered.
Abstract: A modified cellular automata traffic model is proposed to simulate four-lane traffic flow, in which drivers are classified into aggressive drivers and cautious drivers and the anticipative velocity...