In a plasma of sufficient size and density, photons emitted within the system have probability being reabsorbed reemitted multiple times---a phenomenon known in astrophysics as resonant scattering. This effect alters ratio optically thick to thin lines, depending on geometry viewing angle, has significant implications for spectra observed number astrophysical scenarios, but not previously been ...

Abstract We investigate and compare the effects of two different constraints on geometrical properties linking pairs polygons simple cubic lattice, using Monte Carlo methods. One constraint is to insist that centres mass are less than distance d apart, other radius gyration pair R . The second results in links quite spherically symmetric, especially at small values , while first gives much symm...

A certain class of viruses replicates inside a cell if they can enter the nucleus through one of many small target pores, before being permanently trapped or degraded. We adopt for viral motion a switching stochastic process model and we estimate here the probability and the conditional mean first passage time for a viral particle to attain alive the nucleus. The cell nucleus is covered with th...

Percolation clusters are random fractals whose geometrical and transport properties can be characterized with the help of probability distribution functions. Using renormalized field theory, we determine the asymptotic form of various such distribution functions in the limits where certain scaling variables become small or large. Our study includes the pair-connection probability, the distribut...

Probability distribution functions (PDFs) providing a complete representation of property variability in polycrystalline materials are difficult to obtain. Reconstruction of probability distribution of material properties on the basis of limited morphological information is an inverse problem of practical significance since many macroscopic properties depend strongly on geometrical variability ...

The outage probability (OP) and average symbol error probability (ASEP) performance of multiple-mobile-relay-based mobile-to-mobile (M2M) networks with decode-and-forward (DF) relaying over N-Nakagami fading channels is investigated in this paper. The power allocation problem is formulated to determine how the overall transmit power should be shared between broadcasting and relaying phases for ...

Using a toy model Lagrangian we investigate the formation of vortices in first order phase transitions. The evolution and interactions of vacuum bubbles are also studied using both analytical approximations and a numerical simulation of scalar field dynamics. A long lived bubble wall bound state is discovered and its existence is justified by using a simplified potential for the bubble wall int...

In a series of papers by D. Hughes, N. Hansen and their coauthors it was established that laminar microstructures developed in compression and rolling possess a surprising property: probability distribution of misorientations referred to the average misorientation is universal, i.e. slightly dependent on the material and the magnitude of plastic deformation. A similar fact was found for lamina ...

In this paper, clear-air fade depth and outage probability occurrence of microwave signals is estimated based on the effect of tropical geoclimatic factor derived from atmospheric refractivity gradient computed for three years (January 2011-December 2013) of measurement of air temperature, pressure and relative humidity for terrestrial line of sight (LOS) link design application in Akure, Niger...