A model of a hard oscillator with analytic solution is presented. Its behavior under periodic kicking, for which a closed form stroboscopic map can be obtained, is studied. It is shown that the general structure of such an oscillator includes four distinct regions; the outer two regions correspond to very small or very large amplitude of the external force and match the corresponding regions in...

The problem of maximal hub covering as a challenging problem in operation research. Transportation programming seeks to find an optimal location of a set of hubs to reach maximum flow in a network. Since the main structure's parameters of the problem such as origin-destination flows, costs and travel time, change periodically in the real world applications, new issues arise in handling it. In t...

this paper is dedicated to propose an algorithm in order to generate the certain isomers of some well-known fullerene bases. furthermore, we enlist the bipartite edge frustration correlated with some of symmetrically distinct innite families of fullerenes generated by the oered process.

We introduce unique class of cyclic quantum thermal machines (QTMs) which can maximize their performance at the finite value cycle duration $\tau$ where they are most irreversible. These QTMs based on single-stroke thermodynamic cycles realized by non-equilibrium steady state (NESS) so-called Periodically Refreshed Baths (PReB) process. find that such interpolate between standard collisional QT...

Ferroelectric crystals are important materials in many kinds of applications. Since the invention of so called quasi-phase matching technique, periodically domain-inverted ferroelectrics crystals with modulated second order nonlinear susceptibility are widely used in frequency conversion application. In periodically domain-inverted ferroelectrics crystals, besides the nonlinear optical coeffici...

We consider a purely fractionally deferenced process driven by periodically time-varying long memory parameter. will build an estimate for the vector parameters using minimum Hellinger distance estimation. The results are investigated through simulation studies.