let $gamma$ be a normal subgroup of the full automorphism group $aut(g)$ of a group $g$‎, ‎and assume that $inn(g)leq gamma$‎. ‎an endomorphism $sigma$ of $g$ is said to be {it $gamma$-central} if $sigma$ induces the the identity on the factor group $g/c_g(gamma)$‎. ‎clearly‎, ‎if $gamma=inn(g)$‎, ‎then a $gamma$-central endomorphism is a {it central} endomorphism‎. ‎in this article the conditi...

In this paper a number of alternative ACD models are compared using a sample of data for three major companies traded on the Australian Stock Exchange. The comparison is performed by employing the methodology for evaluating density and interval forecasts, developed by Diebold, Gunther and Tay (1998) and Christoffersen (1998), respectively. Our main finding is that the generalized gamma and log-...

The analysis of the passenger spill data is an integral part for the determination of optimal aircraft capacities in the airline fleet assignment process. Most research in this study has assumed that the nominal demand is normally distributed. But empirical evidences show that normal probability distribution is not suitable in many cases because of asymmetry nature of the data. In the present s...

The generalized gamma convolutions class of distributions appeared in Thorin’s work while looking for the infinite divisibility log-Normal and Pareto distributions. Although these have been extensively studied univariate case, multivariate case dependence structures that can arise from it received little interest literature. Furthermore, only one projection procedure was recently constructed, n...

a genome consisted of 1000 biallelic single nucleotide polymorphisems (snps) on one chromosome with 100 cm length was simulated and different qtl variance distributions (uniform, normal and gamma) and various numbers of qtl (5, 10 and 20) were considered as simulation assumptions and consecutively 9 various traits were generated. the comparison between gebvs obtained from bayesc and gblup showe...

In this project, we investigated the use of an electronic portal imaging device (EPID), together with the treatment planning system (TPS) and MLC log files, to determine the delivered doses to the patient and evaluate the agreement between the treatment plan and the delivered dose distribution. The QA analysis results are presented for 15 VMAT patients using the EPID measurements, the ScandiDos...

This note will look at ways of computing P(X>Y)where X is a distribution modeling survival (gamma, inverse gamma, Weibull, log-normal) and Y has a uniform distribution. Each of these can be computer in closed form in terms of common statistical functions. We begin with analytical calculations and then include software implementations in R to make some of the details more explicit. Finally, we g...