The dynamical behavior of domestic political hostility is modeled in terms of the interaction between hostile (challenger) and ruling (regime) groups. The conditions under which the conflict situation will either settle down in a steady state or evolve in time are derived for various forms of...

We investigate the dynamics of economic evolution and technological change as hill-climbing in an adaptive landscape over a continuous characteristics space. A technology/firm is described by a large number of attributes or characteristics representing technology-inherent aspects, financial,...

<Para ID="Par1">A new theoretical probability distribution generalized Nakagami–generalized inverse Gaussian distribution (GN–GIGD) is proposed to model the backscattered echo envelope in ultrasound imaging. This new probability distribution is a composite distribution derived by compounding generalized...</para>

A nonlinear stochastic model of machine interference depicting the threshold phenomenon is investigated in the close neighbourhood of the threshold point. It is shown that in the threshold region fluctuations in the system become significantly large. The rate of growth of the relative size of...

A nonlinear model for unidirectional flow of heavy traffic on a two-lane highway is considered. Features such as entrance, exit and lane transfer with time-dependent parameters are incorporated into the model, with the result that a number of previous models employed in the study of traffic flow...

A stochastic migration model describing the population dynamics in a region is investigated. The model is described by a pair of coupled differential equations with state-dependent stochasticity. Explicit expressions for the time evolution of the moments for the population sizes of cities are...