The number of cellular communication subscribers continues to grow, attesting to the great success of this technology. However, cellular networks have inherent limitations on cell capacity and coverage and shortcomings such as the dead spot and the hot spot problems. Multi-hop cellular networks (MCNs) help enhance the cell capacity and coverage, while, at the same time, alleviating the dead spo...

The spatial structure and temporal evolution of a nondiffusive hot spot is examined in a confined, planar enclosure. The situation is modelled by the reactive Euler equations and single-step Arrhenius kinetics with a large (scaled) activation temperature 1/ . The initial state of the medium is taken to be one of uniform pressure but with a prescribed thermal gradient of order across the domain....

Assuming a diamagnetic interaction between a stellar-spot originated localized magnetic field and gas blobs in the accretion disk around a TTauri star, we show the possibility of ejection of such blobs out of the disk plane. Choosing the interaction radius and the magnetic field parameters in a suitable way gives rise to closed orbits for the ejected blobs. A stream of matter composed of such b...