in the present work, we have obtained the equation of state for neutron star matter considering the in uence of the ferromagnetic and antiferromagnetic spin state. we have also investigated the structure of neutron stars. according to our results, the spin asymmetry stiens the equation of state and leads to high mass for the neutron star.

We consider the modelling of urban bus networks in dioid algebras. In particular, we show that their dynamic behavior can be modeled by a Min-Max recursive equation.

In this paper, a parallel mechanism with two rotational degrees of freedom is proposed. It could rotate freely and continuously around the coordinate axes at fixed origin frame. The structure second-order over constraint moving platform base are connected by five kinematic chains. motion characteristics analyzed reciprocal screw equation. Then, kinematics dynamics modelling carried out systemat...

Computer offences and crimes against corporate computer systems have increasingly become a major challenge to information security management in the Internet-enabled global economy and society. In this study, we attempt to develop a theoretical model that integrates three main stream criminology theories, i.e., general deterrence, rational choice, and individual propensity. We submit that, whil...

This study considers the theoretical analysis, modelling technique and experimental verification of the effects of gradient, running and curve resistance on train performance. The developed process uses computer simulations via Dynamis software in conjunction with an empirical approach for energy and resistance analyses, verification, dynamic train modelling and tests. The overall objective was...

Purpose – The purpose of this paper is to investigate the effects of user competence on two different usage variables related to information systems (IS) infusion: explorative use and exploitative use. Design/methodology/approach – Structural equation modeling is used to construct a predictive model of user competence toward IS infusion. Individuals’ responses to questions about attitude and in...

We study a delay diierential equation modelling the harmonic oscillator with forcing which depends on the state and the derivative of the state at some time in the past. We perform a linearized stability analysis of the equation and describe the location of Hopf and steady state bifurcations in the parameter space. A complete description of the location of points in parameter space where the ch...

Distributed solvers provide several benefits, such as linear scalability and good numerical robustness. By separating components with transmission line elements, simulations can be run in parallel on multi-core processors. At the same time, equation-based modelling offers an intuitive way of writing models. This paper presents an algorithm for generating distributed models from Modelica code us...

We determine the solutions of a nonlinear Hamilton-Jacobi-Bellman equation which arises in the modelling of mean-variance hedging subject to a terminal condition. Firstly we establish those forms of the equation which admit the maximal number of Lie point symmetries and then examine each in turn. We show that the Lie method is only suitable for an equation of maximal symmetry. We indicate the a...

Gene transcription models must take account of intrinsic stochasticity. The Chemical Master Equation framework is based on modelling assumptions that are highly appropriate for this context, and the Stochastic Simulation Algorithm (also known as Gillespie’s algorithm) allows for practical simulations to be performed. However, for large networks and/or fast reactions, such computations can be pr...