Displaying 281 – 300 of 1119

Showing per page

Some Dirichlet spaces obtained by subordinate reflected diffusions.

Niels Jacob, René L. Schilling (1999)

Revista Matemática Iberoamericana

In this paper we want to show how well-known results from the theory of (regular) elliptic boundary value problems, function spaces and interpolation, subordination in the sense of Bochner and Dirichlet forms can be combined and how one can thus get some new aspects in each of these fields.

Some discrete exponential dispersion models: Poisson-Tweedie and Hinde-Demétrio classes.

Célestin C. Kokonendji, Simplice Dossou-Gbété, Clarice G. B. Demétrio (2004)

SORT

In this paper we investigate two classes of exponential dispersion models (EDMs) for overdispersed count data with respect to the Poisson distribution. The first is a class of Poisson mixture with positive Tweedie mixing distributions. As an approximation (in terms of unit variance function) of the first, the second is a new class of EDMs characterized by their unit variance functions of the form μ + μp, where p is a real index related to a precise model. These two classes provide some alternatives...

Some distribution results on generalized ballot problems

Jagdish Saran, Kanwar Sen (1985)

Aplikace matematiky

Suppose that in a ballot candidate A scores a votes and candidate B scores b votes and that all possible a + b a voting sequences are equally probable. Denote by α r and by β r the number of votes registered for A and for B , respectively, among the first r votes recorded, r = 1 , , a + b . The purpose of this paper is to derive, for a b - c , the probability distributions of the random variables defined as the number of subscripts r = 1 , , a + b for which (i) α r = β r - c , (ii) α r = β r - c but α r - 1 = β r - 1 - c ± 1 , (iii) α r = β r - c but α r - 1 = β r - 1 - c ± 1 and α r + 1 = β r + 1 - c ± 1 , where c = 0 , ± 1 , ± 2 , .

Some examples of non-monotonicities in a two-unit redundant system

Antonín Lešanovský (1984)

Aplikace matematiky

A cold-standby redundant sytem with two identical units and one repair facility is considered. Units can be in three states: good ( I ) , degraded ( I I ) , and failed ( I I I ) . It is supposed that only the following state-transitions of a unit are possible: I I I , I I I I I , I I I , I I I I . The paper deals with the comparison of some initial situations of the system and with a stochastical improvement of units (stochastical increase of time of work in state I and/or stochastical decrease of times of repairs of the types I I I and/or I I I I ) and...

Currently displaying 281 – 300 of 1119