In this paper we concern ourselves with the small h asymptotics of the inner products of the eigenfunctions of a Schr6dinger-type operator with a coherent state. More precisely, let 0~ and E) denote the eigenfunctions and eigenvalues of a Schr6dinger-type operator H~ with discrete spectrum. Let 0(x,~) be a coherent state centered at the point (x, ~) in phase space. We estimate as h --+ 0 the av...

We consider a discrete-time s S inventory model in which the stored items have a random common lifetime with a discrete phase-type distribution. Demands arrive in batches following a discrete phase-type renewal process. With zero lead time and allowing backlogs, we construct a multidimensional Markov chain to model the inventorylevel process. We obtain a closed-form expected cost function. Nume...

This correspondence presents an iterative instantaneous frequency (IF) estimation scheme in which successive IF estimates are obtained from the peak of the cross Wigner-Ville distribution (XWVD) using a reference signal synthesized from an initial IF estimate. Theoretical and practical aspects of performance are discussed, and compared with other methods.

A single phased Y-type hexagonal ferrite Sr2Co1.7Mg0.3Fe11.2Sn0.4Zn0.4O22 was synthesized by the sol–gel auto combustion method. Structural and magnetic properties of this composition of Y-type hexagonal ferrite have been investigated. The X-ray diffraction (XRD) patterns confirm single phase Y-type hexagonal ferrite and various parameters such as lattice constants and cell volume have been cal...

background: premenstrual dysphoric disorder (pmdd) is a mood disorder characterized with physical and affective symptoms during the luteal phase of susceptible women. objective: the aim of this study was to investigate the association of dopamine d3 receptor ( drd3 ) polymorphism, and cannabinoid receptor type 1 ( cnr1 ) polymorphism with pmdd. materials and methods: fifty one participants with...

Properties of the distribution of the deficit at ruin in the stationary renewal risk model are studied. A mixture representation for the conditional distribution of the deficit at ruin (given that ruin occurs) is derived, as well as a stochastic decomposition involving the residual lifetime associated with the maximal aggregate loss. In the case where the individual claims have a phase-type dis...