We describe combinatorially the coefficients occurring in the irreducible decomposition of the Weyl module associated with an almost skewshape belonging to the family J . The proof uses the fundamental exact sequence for almost skew-shapes to initiate an inductive procedure which ultimately reduces to the classical Littlewood-Richardson rule for skew partitions.

In recent years, the extension of classical Gaussian-based statistical models to non-Gaussian ones has received sustained attention and generated many research topics. There have been various approaches to develop multivariate non-Gaussian distributions. Two main directions to approach such extensions consist of multivariate skew-symmetric distributions and of copula models. Skew-symmetric dist...

Alternative parameterizations and problems of identification and estimation of multivariate random effects models for categorical responses are investigated. The issues are illustrated in the context of the multivariate binomial logit-normal (BLN) model introduced by Coull and Agresti (2000, Biometrics 56, 73-80). We demonstrate that the BLN model is poorly identified unless proper restrictions...

In the present paper a mixed generalized estimating/pseudo-score equations (GEPSE) approach together with a distribution-free multiple imputation technique is proposed for the estimation of regression and correlation structure parameters of multivariate probit models with missing values for an ordered categorical time-invariant variable. Furthermore, a generalization of the squared trace correl...

probabilistic approach of traffic assignment has been primarily developed to provide a more realistic and flexible theoretical framework to represent traveler’s route choice behavior in a transportation network. the problem of path overlapping in network modelling has been one of the main issues to be tackled. due to its flexible covariance structure, probit model can adequately address the pro...

Children and Women’s Participation Dynamics: Direct and Indirect Effects Children affect the after-birth labor force participation of women in two ways. Directly, the time spent in child-care reduces the labor market effort. Time spent out of the labor market while on maternity leave alters women’s participation experience and indirectly affects subsequent participation behavior. This paper pro...

Abstract For the family of multivariate probability distributions variously denoted as unified skew-normal, closed skew-normal and other names, a number properties are already known, but many others not, even some basic ones. The present contribution aims at filling missing gaps. Specifically, moments up to fourth order obtained, from here expressions Mardia’s measures skewness kurtosis. Other ...

Purpose – Recent research has found significant relationships between internet search volume and real estate markets. This paper aims to examine whether Google search volume data can serve as a leading sentiment indicator and are able to predict turning points in the US housing market. One of the main objectives is to find a model based on internet search interest that generates reliable real-t...

1 SUMMARY The development of adequate models for binary time series data with covariate adjustment has been an active research area in the last years. In the case, where interest is focused on marginal and association parameters, generalized estimating equations (GEE) (see for example Lipsitz, Laird and Harrington (1991) and Liang, Zeger and Qaqish (1992)) and likelihood (see for example Fitzma...

The main objective of organic agriculture is to produce healthy and quality food products without using synthetic chemical products in response to consumers’ concerns about food safety, human health, animal welfare and the environment. The EU’s promotion of organic agriculture constitutes an important alternative for society and for the more marginal agricultural regions in southern Europe. Fir...