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Toroidal metamaterial-assisted terahertz biosensor with high sensitivity Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2024-03-12 Fei Wang, Qiang Chen, Qing Yang, Lifei Tian
In this paper, a toroidal metamaterial for achieving highly sensitive sensors in the terahertz (THz) frequency range is proposed. Such a subwavelength structure consists of a pair of mirror-symmetric metal split-ring resonators and a single metal wire. By exciting the structure with vertically incident electromagnetic waves, high-Q transmission peaks are generated at 2.40 and 2.44THz. Near-field analysis
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Heuristic optimal transport in branching networks Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2024-03-12 M. Andrecut
Optimal transport aims to learn a mapping of sources to targets by minimizing the cost, which is typically defined as a function of distance. The solution to this problem consists of straight line segments optimally connecting sources to targets, and it does not exhibit branching. These optimal solutions are in stark contrast with both natural, and man-made transportation networks, where branching
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Numerical study of the influence of amplitudes on heat transfer in a tube bundle Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2024-03-09 Mohammed Foual, Khaled Chaib, Nordeddine Sad Chemloul, Youcef Becheffar
The objective of this study is to investigate the impact of different surface roughness levels on a staggered arrangement of tubes in a cross-flow configuration, with water as the fluid being used. The focus lies in comparing the data obtained from the rough surface configuration with that of a smooth cylinder reference point. To assist this comparison, a comprehensive two-dimensional computational
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Complexity of popularity and dynamics of within-game achievements in computer games Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2024-03-09 Leonardo R. Cunha, Leonardo O. Mendes, Renio S. Mendes
Tasks of different nature and difficulty levels are a part of people’s lives. In this context, there is a scientific interest in the relationship between the difficulty of the task and the persistence need to accomplish it. Despite the generality of this problem, some tasks can be simulated in the form of games. In this way, we employ data from a large online platform, called Steam, to analyze games
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Impact of population size on epidemic spreading in a bipartite metapopulation network with recurrent mobility Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2024-03-05 Hao-Jie Wang, Yuan-Hao Xu, Ming Li, Mao-Bin Hu
The mobility pattern of a population plays a key role in the spread of epidemics. Despite extensive work on epidemic spreading, little attention has been paid to the impact of subpopulation size. This paper investigates the spread of epidemics on a bipartite metapopulation network considering recurrent mobility patterns and different sizes of subpopulations. With the Markovian process approach, the
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Quantifying the relationship between mobility patterns and socioeconomic status of dockless bike-sharing users Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2024-03-05 Yu Yang, Tianli Gao, Zikun Xu, Yongping Zhang, Chenxin Liu, Fan Shang, Ruiqi Li
Cycling is among the healthiest, greenest, and most affordable means of transportation for a better future city, but mobility patterns of cyclists with different income have rarely been studied due to the limitation of data availability. Newly emergent dockless bike-sharing platforms that record detailed trip information provide us a unique opportunity. Attributing to its better usage flexibility and
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Emergence of chimera states in neural networks with distance-dependent mean field coupling Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2024-02-26 T. Remi, P. A. Subha
The emergence of chimera states in neural networks has been an interesting area of research in the past few years and aims to explore the complex brain functions. Even though the presence of chimera states in systems with nonlocal interaction is well known, its emergence in networks with global and local interactions is least explored. Different techniques like introducing distance dependent interactions
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Revisiting Lindemann’s criterion from a minimal viscosity perspective Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2024-02-26 Pablo G. Tello, Sauro Succi
A revisiting of the Lindemann criterion under the recently established minimal viscosity formulation is proposed which uncovers intriguing insights into the melting process. The approach suggests that melting involves competition between the electron rest energy and the thermal one caused by temperature increase when considering a defect-free crystal structure. However, when accounting for the role
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Modeling of mixed traffic flow and safety evaluation in the upstream area of the bus station Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2024-02-20 Chuan-Yao Li, Bing-Qian Li, Jie Yin, Liang Chen
The mixed traffic flow of various types of vehicles at bus station is severe, which has an impact on the overall safety of traffic. Especially upstream of bus station, since buses need to change lane in order to stop at the bus station, it interacts with social vehicles. Thus, in this paper, a two-lane CA model considering the mixed traffic flow composing of buses, cars and nonmotorized vehicles upstream
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Detonation physics of H2-air blend in closed bended ducts: A comprehensive numerical analysis Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2024-02-20 Reza Soleimanpour, Hossain Nemati
In this research study, a comprehensive investigation was undertaken to delineate the deflagration to detonation transition (DDT) of a hydrogen–oxygen (H2–O2) mixture within the confined environment of a closed duct featuring multiple structural variations, namely smooth, single bend, double bend, and triple bend configurations. The computational modeling and simulation tool, OpenFOAM, an open-source
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Phase transitions in the anisotropic XY ferromagnet with quenched nonmagnetic impurity Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2024-02-09 Olivia Mallick, Muktish Acharyya
The equilibrium behaviors of the anisotropic XY ferromagnet, with nonmagnetic impurity, have been investigated in three dimensions by Monte Carlo simulation using Metropolis algorithm. Two different types of anisotropy, namely, the bilinear exchange type and single-site anisotropy are considered here. The thermodynamic behaviors of the components of the magnetizations (M), susceptibility (χ) and the
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Random Matrix Theory and Nested Clustered Optimization on high-dimensional portfolios Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2024-02-09 Andrés García-Medina, Benito Rodríguez-Camejo
This work aims to address the optimal allocation instability problem of Markowitz’s modern portfolio theory in high dimensionality. We propose a combined strategy that considers covariance matrix estimators from Random Matrix Theory (RMT) and the machine learning allocation methodology known as Nested Clustered Optimization (NCO). The latter methodology is modified and reformulated in terms of the
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Quantum wave representation of dissipative fluids Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2024-02-09 Luca Salasnich, Sauro Succi, Adriano Tiribocchi
We present a mapping between a Schrödinger equation with a shifted nonlinear potential and the Navier–Stokes equation. Following a generalization of the Madelung transformations, we show that the inclusion of the Bohm quantum potential plus the laplacian of the phase field in the nonlinear term leads to continuity and momentum equations for a dissipative incompressible Navier–Stokes fluid. An alternative
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Numerical analysis of linear wave behavior around the moving thin plate in the surging direction in intermediate water Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2024-02-09 Deepak Kumar Singh, Akhileshwar Singh, Sanjeev Ranjan
The objective of this project is to develop a numerical approach that simulates the behavior of sloshing water with linear free surface waves on a sloping beach inside a 2D rectangular tank. The current computational approach represents the first stage in the development of a precise modeling framework for wave energy converters (WEC). The 2D tank model was generated using the ANSYS FLUENT program
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Mathematical modeling of tumor growth as a random process in the presence of interaction between tumor cells and normal cells Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2024-02-09 Fatemeh Beigmohammadi, Mohammad Khorrami, Amir Ali Masoudi, Amir H. Fatollahi
A mathematical model of tumor growth as a random process is studied, in which there is an interaction between tumor cells and normal cells. A set of two coupled stochastic differential equations defines the dynamics of tumor cells and normal cells. The evolution contains driven growth, therapy, and Gaussian white noises terms. The corresponding Fokker–Planck equation is used to study the large-time
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Dc conductivity of two-dimensional ionic Hubbard model extracted by analytic continuation Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2024-02-09 Yiqun Huang, Wanpeng Han, Junsong Sun, Huaiming Guo, Shiping Feng
The ionic Hubbard model in a two-dimensional square lattice is revisited using determinant quantum Monte Carlo (DQMC) and numerical analytic continuation. From the dc conductivity extracted by stochastic maximum entropy of the DQMC data, we find that the band insulator induced by a staggered potential Δ goes through a metallic phase before entering a Mott insulator as the on-site Hubbard interaction
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Bifurcation analysis of macroscopic traffic flow models based on driver behavior Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2024-02-02 WenHuan Ai, YiFan Zhang, DanDan Xing, DaWei Liu
This paper proposes a novel nonuniform continuous traffic flow model, which takes into account the differences in drivers’ expected headway and further improves the model by incorporating the influences of relative distance and relative velocity of vehicles through linear weighting. Additionally, the model also considers the dynamic response time of drivers for further refinement. With this model,
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Existence of two distinct time scales in the Fairen–Velarde model of bacterial respiration Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2024-02-02 Soumyadeep Kundu, Muktish Acharyya
We study the bacterial respiration through the numerical solution of the Fairen–Velarde coupled nonlinear differential equations. The instantaneous concentrations of the oxygen and the nutrients are computed. The fixed point solution and the stable limit cycle are found in different parameter ranges as predicted by the linearized differential equations. In a specified range of parameters, it is observed
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Solving real-life BVPs via the second derivative Chebyshev pseudo-Galerkin method Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2024-01-30 Marwa Gamal, M. El-Kady, M. Abdelhakem
The aim of this paper is to use the second derivative of Chebyshev polynomials (SDCHPs) as basis functions for solving linear and nonlinear boundary value problems (BVPs). Then, the operational matrix for the derivative was established by using SDCHPs. The established matrix via mixing between two spectral methods, collocation and Galerkin, has been applied to solve BVPs. Consequently, an error analysis
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Logistic oscillator model for gross domestic product Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2024-01-30 E. Vallejo-Castañeda, L. A. Quezada-Téllez, J. N. Gutiérrez-Corona, A. Torres-Mendoza, C. Islas-Moreno
In this paper, a logistic oscillator model is presented to analyze the economic cycles of five selected economies: Mexico, Brazil, Canada, China and the United States. This selection was made taking as reference their level of economic development and their geographical position. The proposed model is an extension of the production Phillip’s model (1959), which considers autonomous expenses dependent
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Public health and elections: Correlating COVID-19 vaccination rates with 2020 U.S. presidential election results Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2024-01-29 J. Villaseñor-Ibáñez, M. del Castillo-Mussot, E. Hernández-Ramírez
We correlate county-level partial and full vaccination rates with results from the 2020 United States (U.S.) election, obtaining Pearson correlation values for each individual state, noting top and bottom values, and observing an almost absolute positive correlation between Biden support and vaccination rates, and inversely a negative correlation when considering Trump support. This trend holds for
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First-principles study of hydrogen capacity in Li2TiO3 crystal Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2024-01-25 Yan-Wei Li, Yong-Shuai Zhang, Shuai Meng, Wen Yang, Kun Li
Understanding the hydrogen (H) capacity, which represents the tritium capacity in Li2TiO3 crystal has become an important aspect of the tritium release process of nuclear fusion. In this work, a systematic density-functional-theory (DFT) study is performed to investigate the trapping and accumulation of H in Li2TiO3 crystal. In perfect crystal, the H adsorption properties are investigated and the maximum
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Real-time video encryption scheme based on multi-round confusion-diffusion architecture Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2024-01-24 Li-Xun Zhi, Wan-Jing Zhang, Jin Zhong, Wen-Chao Ma, Dong Jiang
With the rapid development of network and multimedia technologies, the widespread use of images in social networks, military applications, and other fields has led to substantial demands for image encryption. To protect images from potential threats, most protocols perform multiple rounds of confusion and diffusion until a satisfactory security level is attained. However, this strategy is time-consuming
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A space-time spectral approximation for solving two dimensional variable-order fractional convection-diffusion equations with nonsmooth solutions Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2024-01-23 A. Z. Amin, M. A. Abdelkawy, E. M. Soluma, M. M. Babatin
The study focuses on the numerical solutions of two-dimensional variable-order fractional convection-diffusion equations, which combine the principles of diffusion and convection to describe the movement of particles, energy, other physical quantities within a system. The numerical solution is obtained using shifted Legendre Gauss–Lobatto and shifted Chebyshev Gauss–Radau collocation techniques. The
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A single assignment of numbers for square divisor cordial and cube divisor cordial labelings on the generalized Petersen graphs GP (n,3) Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2024-01-18 Fredrick Ignatius, S Kaspar
In this paper, a work on the generalized Petersen graph GP (n,3) is done, proving Generalized Petersen graph GP (n,3) to be both Square Divisor Cordial Graphs and Cube Divisor Cordial Graphs by a single assignment of numbers on the same graph. Few conditions are provided to label the graphs in single assignment to prove two different labelings. A rule is developed to label the graphs and the results
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Directed propaganda in the majority-rule model Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2024-01-18 Fabricio L. Forgerini, Nuno Crokidakis, Márcio A. V. Carvalho
Advertisement and propaganda have changed continuously in the past decades, mainly due to the people’s interactions at online platforms and social networks, and operate nowadays reaching a highly specific online audience instead targeting the masses. The impacts of this new media effect, oriented directly for a specific audience, are investigated on this study, in which we focus on the opinion evolution
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Multi-strategy ensemble Harris hawks optimization for smooth path planning of mobile robots Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2024-01-18 Xinlu Zong, Yin Liu, Zhiwei Ye, Xue Xia
Efficient and safe path planning for autonomous navigation is paramount in advancing the motion control capabilities of mobile robots. To obtain the global optimal smooth path for mobile robots, a multi-strategy ensemble Harris hawks optimization algorithm (SDHHO) is proposed in this paper. The spiral search strategy is adopted to improve the early update method of the algorithm, which can improve
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Synchronization in network motifs of three piecewise Rössler systems coupled in ring configuration Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2024-01-18 U. Uriostegui-Legorreta, J. Estevez-Delgado, H. Pérez-Aguilar
In this work, we study the synchronization in the network motifs of three piecewise Rössler systems that exhibit coexistence of two attractors, coupled in ring configuration, in particular a bidirectional auxiliary coupling. For this configuration, we analyze the interaction of the systems by varying the coupling strengths, in order to characterize the conditions under which complete synchronization
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Hybrid cascade failures in supply chain networks: Robustness, node protection and recovery strategies Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2024-01-18 Dandan Li, Kai Zhou, Dun Han
This study investigates the influence of mixed cascade failures on the resilience of manufacturing enterprise supply chain networks, which are susceptible to disruptions from upstream and downstream enterprises due to external uncertainties. We propose a single-layer directed network model to examine mixed cascade failures and analyze the effectiveness of protection and recovery strategies for improving
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Critical branching dynamics in excitable network without refractory periods Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2024-01-18 Lei Tao, Sheng-Jun Wang, Zi-Gang Huang
Critical state plays an important role in emerged behavior of neural networks. Excitable networks are widely used in simulation studies. However, the simulation of critical state is sophisticated because the state sensitively depends on dynamical and topological features. We study the effect of refractory period of dynamical units and connection symmetry on the excitable network with critical branching
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Fractional modeling and analysis of Hepatitis B virus using fixed-point approach Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2024-01-18 Prachi Garg, Surjeet Singh Chauhan (Gonder)
In this paper, we delve into the analysis of the Hepatitis B model, specifically the SEIAICR model, within the scope of the Caputo–Fabrizio fractional operator. A new state variable the number of vaccinated individuals is also added to the model. This addition enriches the scope of the hepatitis B model inviting a deeper exploration of the subject matter. Our study proves the existence of a disease-free
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D-type photonic crystal fiber low refractive index sensor based on surface plasmon Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2024-01-18 Runhua Li, Sitong Liu, Hongman Wang, Ziyi Yang, Lulu Sun, Ji Ma
This study presents the design and analysis of a novel surface plasmon resonance sensor based on D-type photonic crystal fiber. The analyte channel in the sensor comprises an open ring with a thin gold film deposited on the channel, inducing the surface plasmon resonance effect to enhance the resonance effect and improve the spectral sensitivity of the sensor. The proposed design eliminates the need
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Leader–follower coherence in multi-layer networks: Understanding allocations of leaders Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2024-01-18 Yixin Wang, Jun Wang, Weigang Sun
This paper investigates a leader–follower consensus problem of multi-layer networks and understands the role of leader’s allocations in the process of consensus. Leader–follower coherence quantified by the spectrum measures the extent of consensus between leaders and followers in the system under additive noise. In order to study the exact interplay between leader–follower coherence and leader’s allocations
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Hemodynamic effects of the blood flow on aneurysm rupture risk: Geometrical aspects Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2024-01-13 Al-Behadili Faisal Raheem, Rand Otbah Farqad, Saman Aminian, Hasan Khalid Dabis, Golnar Ghane, Amin Hassanvand, M. Bahramkhoo
This study provides comprehensive information about the impact of the parent vessel’s shape on the risk of cerebral aneurysm rupture. It focuses on internal carotid artery (ICA) aneurysms with varying parent vessel sizes, analyzing different aspects of blood flow dynamics. By comparing various hemodynamic factors such as wall shear stress (WSS), oscillatory shear index (OSI) and pressure distribution
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Research on optimization strategies for urban park green space planning in Nanjing based on GIS from the perspectives of network analysis and Thiessen polygon theory Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2024-01-10 Jinpei Yang
Urban Park green space is an essential carrier and form of urban recreation space, playing an important role in improving the ecological environment and enhancing the image of the city. With the process of urbanization and the continuous improvement of residents’ living standards, urban park construction has become increasingly important to meet people’s growing needs for a better life. However, the
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Thermal and structural analysis of laser beam machining process on a Dual Phase 780 (DP780) workpiece Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2023-12-30 Rajat Mishra, T. Aneesh, Tapano Kumar Hotta, Chinmaya P. Mohanty, Saboor Shaik, Manoj Gupta
This study highlights the development of an intelligent thermo-structural model for precise prediction of responses such as the width of heat-affected zone (HAZ), equivalent stress and total deformation for laser beam machining (LBM) process while machining a novel Dual Phase 780 (DP780) workpiece. The numerical model is analyzed through response surface Box–Behnken design to study the consequences
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Simple stochastic model with safe speed using Exchange approach to recognizing synchronized flow as speed-synchronized phase Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2023-12-28 Masayuki Fukuichi
In order to unravel the physical and mathematical mystery of synchronized-flow mechanism and to reveal the fundamental mechanism and origin of synchronized flow produced by nonlinear stochastic processes, we have produced simple stochastic traffic flow models (the gradual-NaSch, Phoenix and mPhoenix models) with nonlinear safe speeds. In the mNaSch model and our gradual-NaSch model, the ith vehicle’s
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Tensile properties of GH4169 superalloy for smooth and notch specimens determined by tests and simulation Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2023-12-23 Yukui Gao, Rui Wang
Tensile mechanical tests of GH4169 superalloy were performed for smooth and notch specimens at room temperature. Moreover, a finite element method (FEM) was employed by an Abaqus simulation software to provide the tensile test processes during elastic and plastic deformation. Comparing the experimental measurements with the simulation and analysis results, it was found that the Ket value decreased
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A general spammer indicator of rating systems uncovering rating preferences and bias Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2023-12-23 Jian Zhou, Rui-Qing Xu, Liang-Liang Gu, Hong-Liang Sun
With the rapid development of e-commerce recently, massive spammers purposely distort the ranking of goods, which affects the market order and the fair competition of businesses seriously. Therefore, identifying such spammers is significant to rational decision making of customers. However, it is difficult to discriminate between normal users and malicious spammers on extremely large rating networks
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Numerical simulation of bending and length-varying flapping wing using discrete vortex method Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2023-12-22 Rahul Kumar, Devranjan Samanta
The paper aims to perform numerical simulations of flapping flight using Discrete Vortex Method (DVM) scheme. The scheme is suitable for moderately low Reynolds number (<∼105) and computationally less expensive as the flow domain doesn’t need to be discretized at each time step. Flapping of a one-dimensional (1D) flexible filament in a two-dimensional (2D) inviscid flow is simulated. The effect of
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Novel chaotic image cryptosystem using dynamic DNA coding Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2023-12-22 Shuang Zhou, Yi Wei, Yingqian Zhang, Lin Teng
This study aims to solve the problem of small key space in image cryptosystems based on logistic mapping. First, a new one-dimensional (1D) chaotic system, with a wide continuous chaotic interval, a large Lyapunov exponent and obvious chaotic characteristics are presented. Subsequently, a novel image encryption algorithm based on the new 1D chaotic system and dynamic DNA encoding is designed. Compared
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Effects of exit obstacles on the evacuation dynamics of blind people Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2023-12-16 Xingli Li, Jie Zheng, Jiangtao Tian, Shanshan Ma, Hua Kuang
The modeling of blind people’s behavior is an important topic in pedestrian evacuation dynamics. In order to study movement characteristics of blind people in evacuation process and the effect of indoor obstacles on the evacuation efficiency of blind people, an extended cellular automata model is proposed to simulate blind people evacuation by considering the influence of obstacles. The control variable
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Computational study of BisGMA: A component of dental resin material Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2023-12-15 M. Maurya, G. Thejas Urs, S. R. Kumarswamy, R. Somashekar
BisGMA, a crucial component of dental resin widely employed in oral care, undergoes an in-depth computational investigation in this study. Employing advanced computational tools such as Large-scale Atomic/Molecular Massively Parallel Simulator (LAMMPS) and General Utility Lattice Program (GULP), we explore a wide range of physical parameters. These encompass the stress–strain variations, Young’s and
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Effects of viscosity ratio and surface wettability on viscous fingering instability in rectangular channel Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2023-12-15 Akhileshwar Singh, Deepak Kumar Singh, Yogesh Singh, Krishna Murari Pandey
This paper explores the impact of viscosity ratio and surface wettability on immiscible viscous fingering instability within a rectangular channel. Numerical investigations are conducted across a range of viscosity ratios (VR) from 0.0009 to 0.5 and wall wettability (θ) from 15° to 150°. The volume of fluid (VOF) model is employed to track the development of finger-shaped instability at the fluid interface
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Robustness of higher-low order networks with adjustable coupling strength Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2023-12-15 Chengjun Zhang, Hao Yang, Wenbin Yu, Yadang Chen, Yi Lei, Hui Yao, Yifan Xie
Robustness is one of the most critical characteristics of complex networks, determining their stability and resilience in the face of various disturbances. With the research on complex networks, people have observed that higher-order networks can also affect the structure and function of the network. Therefore, when studying network robustness, we also need to consider the interaction between higher-order
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Traffic jam mitigation by the policy of maximum velocity limitation Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2023-12-15 Junya Masaka, Fumi Sueyoshi, Md. Anowar Hossain, Jun Tanimoto
This study explored whether a policy with maximum velocity limitation prior to each jam point in a traffic flow system can mitigate jam situations in a highway. To quantify this question, a new cellular automata traffic model based on the Revised S-NFS model was established. We perused two specific scenarios: a jam naturally brought by a high traffic density, and one brought by a lane-closed section
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Two kinds of gravitational forces in transport: An analysis using the gravity model Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2023-12-15 Changgi Lee, Hyungsoo Woo, Jae-Suk Yang
The gravity model is a widely recognized tool for estimating the movement of people and goods. In this study, we introduce two gravitational variables, population size and regional GDP per capita (RGDPPC), to explain the characteristics of population movement between and within cities in South Korea. A log-linearized gravity model is employed to run regression analyses at three spatial levels: the
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A new third-order EXP-WENO scheme for Hamilton–Jacobi equations Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2023-12-15 Rooholah Abedian
The authors of this research paper have introduced a new method for solving Hamilton–Jacobi (HJ) equations called third-order weighted essentially nonoscillatory (WENO) method. This method uses exponential polynomials to construct numerical fluxes and smoothness indicators, which helps distinguish between singular and smooth regions more efficiently. The smoothness indicators are created using a finite
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Two spectral Gegenbauer methods for solving linear and nonlinear time fractional Cable problems Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2023-12-13 A. G. Atta
This research aims to analyze and implement two numerical spectral schemes for solving linear and nonlinear time fractional Cable equations (TFCEs). Two modified sets of shifted Gegenbauer polynomials (SGPs) are used as basis functions. The approximation of the solution is written as a product of the two chosen basis function sets. For these methods, the principle idea is to convert the problem governed
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Soft computing through supervised neural network based on Levenberg–Marquardt back propagation for numerical treatment of steady flow of Oldroyd 4-constant fluid between two rolls Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2023-12-13 Muhammad Usman, Yanren Hou, Muhammad Zahid, Fateh Ali, Muhammad Afzal Rana
This study presents a new intelligent computing method based on the Levenberg–Marquardt back-propagation-based supervised neural network (LMB-SNN) for the flow of Oldroyd 4-constant fluid in the forward roll coating process (OFC-FRCP). The mathematical formulations for OFC-FRCP are converted into ordinary differential equations using lubrication approximation theory (LAT) and suitable dimensionless
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Quantitative comparison of dam break and bubble flows based on CF-VOF and IR-VOF schemes Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2023-12-01 Jongkwon Lee, S. Mahmood Mousavi, Bok Jik Lee, Salah A. Faroughi
In this study, an incompressible and immiscible two-phase flow solver was employed to assess the accuracy of phase-interface capturing methods in simulating two-phase flows. Three benchmark investigations were conducted involving two dam break flows with deformable free surfaces and the upward motion of a gas bubble through a liquid column. Four phase-interface capturing schemes, namely, MULES, HRIC
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MHD flow of a rotating micropolar fluid between two plates by using DTM Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2023-11-28 Reshu Gupta
The primary purpose of this work is to investigate the influence of a magnetic field on a micropolar fluid, which is rotating between two horizontally arranged parallel plates. A uniform magnetic field acts perpendicularly to the porous plate, which consumes fluid with a steady suction velocity. The obtained higher-order nonlinear partial differential equations (PDEs) are converted into nonlinear ordinary
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Wave behavior in a numerical wave tank at intermediate depth of water using stokes wave theory Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2023-11-28 Deepak Kumar Singh, Sanjeev Ranjan, Naveen G Patil
The paper analyzes a second-order Stokes wave theory by CFD code and uses the volume of fluid (VOF) method in a 2D numerical wave tank (NWT) in the intermediate depth of water under different wave steepness conditions. The CFD simulation in an NWT generates a wave, validated with the already published experimental and numerical data to check the accuracy. It shows that current results are in good agreement
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Research on homogeneous information propagation in social network Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2023-11-28 Fuzhong Nian, Zheming Wang, Yinuo Qian
In real network systems, there are numerous information propagation phenomena. However, the impact of homogeneity on information propagation is still not well understood. In this paper, we introduce a dynamic information propagation model named H-SIR. We also incorporate the propagation mechanism of content homogeneity and define the dynamic propagation rate based on users’ interest locking and fatigue
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A quasi-steady numerical modeling of wake capture for a hovering flapping wing Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2023-11-21 Amir Hossein Zaree, Mohammad Hassan Djavareshkian
In this study, models for the wake capture lift and drag force coefficients of a hovering flapping wing were presented using numerical fluid dynamics simulation to improve the blade element theory. The investigated wing is inspired by the fruit fly and has combined flapping and pitching movements. The effect of changing the wing acceleration time at the start (ΔτA) and end of the half cycle (ΔτD),
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DFT study of electronic, optical and vibrational properties of the orthorhombic dansyl chloride crystal Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2023-11-21 José Robson da Costa Venâncio, Nilton Ferreira Frazão
Dansyl chloride (DNS-Cl) is a fluorescence-labeled organic compound widely used in fields such as pharmacology, toxicology, organic synthesis and biochemistry. We perform a computational study of the structural, electronic, optical and vibrational properties of its orthorhombic crystalline form. We use the pseudopotential approach of the density functional theory (DFT) considering the generalized gradient
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Opposition-based Learning Cooking Algorithm (OLCA) for solving global optimization and engineering problems Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2023-11-18 S. Gopi, Prabhujit Mohapatra
This study introduces a new human-based meta-heuristic algorithm, the Learning Cooking Algorithm (LCA), based on the opposition-based learning (OBL) strategy, namely the Opposition-based Learning Cooking Algorithm (OLCA). The proposed OLCA algorithm consists of four stages: the first stage, where the OBL strategy is implemented to improve the initial population; the second stage, where children learn
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Impacts of coiling technique on hemodynamic of the MCA aneurysms: Computational study Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2023-11-17 Jieping Ding, Peiman Valipour
In this research, a computational approach is applied to model the blood flow inside the MCA aneurysm when the coiling technique is used for the treatment of the patients. To this end, porous condition with different permeability factors is applied and their impacts on the hemodynamic factors of wall shear stress, pressure and oscillatory shear index. The main attention is to find how endovascular
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Influence maximization based on double clusters multi-verse optimizer Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2023-11-17 Qiwen Zhang, Yueyue Liu, Enliang Ren
The influence maximization problem is one of the important research topics in the social network. We address the problems of meta-heuristic algorithms such as the high probability of entrapment in local optima, low accuracy of the solution, and decreasing diversity in the late iteration. The Double Clusters Multi-Verse Optimizer (DCMVO) algorithm is proposed as a solution to the problem of influence
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Numerical simulation of Gedanken experiments involving violations of Bell’s inequalities Int. J. Mod. Phys. C (IF 1.9) Pub Date : 2023-11-17 Daegene Song
Entanglement exhibits a unique property of quantum theory that is unseen in classical counterparts. The experimental confirmation of Bell’s inequalities has surprised many people and revived interest and debate regarding the exact nature of quantum theory, including the wave-particle duality. On the other hand, rapid advancements in computing technology in recent years have provided a new tool for