This paper is concerned with the analysis of a single server queueing system subject to Bernoulli vacation schedules with server setup and close down periods. An explicit expression for the probability generating function of the number of customers present in the system is obtained by using imbedded Markov chain technique. The steady state probabilities of no customer in the system at the end o...

Adhesion between cells is due to formation of weak, reversible chemical bonds between ‘‘lock’’ and ‘‘key’’ molecules imbedded in the cell surfaces. In this paper we present a theory for cell adhesion that extends the well-known Bell model of noninteracting adhesion molecules to include the cell-surface mediated elastic coupling between the molecules. We show that the statistical mechanics of th...

The ground state energy of an assembly of charged particles of density rho imbedded in a continuum of charge of the other sign in an electrically neutral system is considered. Asymptotic formulae for the ground state energy of such systems are known in the high- and low-density regimes. An interpolation formula covering the entire density range is derived using the method of two-point Padé appr...

The role played by the Nd ions in the magnetic properties of Nd0.5Ca0.5MnO3 and Nd0.7Ca0.3MnO3 is studied using static magnetization, neutron diffraction and high frequency (9.4 − 475GHz) Electron Spin Resonance. We show that the Nd ions are weakly coupled to the Mn ions via ferromagnetic exchange and are responsible for the peculiar ferromagnetic resonance observed in the FM phase of both comp...

Numerical simulation of two-phase flow with imbedded interface of discontinuity is challenging in two major aspects. First, the interface can undergo change, merge and breakup during the course of the simulation. Examples of current successful methods in modeling flow with interface are, among others, the volume-of-fluid method, fronttracking method, and level-set method. Second, flow variables...

It has been shown that polymer powders, in contrast to polymer and other films, are noncarcinogenic when imbedded subcutaneously. An important difference in response between films and powders appears to be the fibrous pocket formed around the im bedded film. It is in the lining cells of this pocket that the tumors originate. No such pocket arises with powders. It was suggested that powder might...