Many factors are involved in tourist decision expenses. Such circumstances may give rise to some asymmetry the distribution of tourism expenditure. We propose this paper a reparameterization three-parameter log-skew normal for modelling expenditure at country origin, destination, and total setting. This seems fit data satisfactorily all parts empirical distribution. In particular, proposed mode...

In spatial data analysis, outliers or influential observations have a considerable influence on statistical inference. This paper develops Bayesian including the local approach and case measures in skew-normal autoregression models (SSARMs). The method is proposed to evaluate impact of small perturbations data, distribution sampling prior. To measure extent different SSARMs, Bayes factor, ?-div...

In this paper, some properties of $alpha$-skew Armendariz and central Armendariz rings have been studied by variety of others. We generalize the notions to central $alpha$-skew Armendariz rings and investigate their properties. Also, we show that if $alpha(e)=e$ for each idempotent $e^{2}=e in R$ and $R$ is $alpha$-skew Armendariz, then $R$ is abelian. Moreover, if $R$ is central $alpha$-skew A...

We classify the connected pseudo-Riemannian manifolds of signature (p, q) with q ≥ 5 so that at each point of M the skew-symmetric curvature operator has constant rank 2 and constant Jordan normal form on the set of spacelike 2 planes and so that the skew-symmetric curvature operator is not nilpotent for at least one point of M .