A notion of the positive spatial association is introduced in this paper to analyze spatial dependence of Boolean models with the focus on estimating the long-range spatial dependence. The explicit tail estimates for probabilities of simultaneous damage to two distant spatial regions are obtained using the regular variation method, and the long-range spatial covariance for the Boolean models wi...

An extension of Klahr and Dunbar's (1988) Dual space model of scientific discovery is presented. We propose that, in addition to search in an experiment space and a hypothesis space, scientific discovery involves search in two additional spaces: the space of data representations and the space of experimental paradigms. That is, discoveries often involve developing new terms and adding new featu...

Brazil’s inequalities in welfare and poverty between and within regions can be accounted by differences in household attributes and returns to those attributes. Using Blinder-Oaxaca decompositions at the mean as well as at different quantiles of welfare distributions on regionally representative household survey data (2002-03 POF), this paper finds that household attributes account for most of ...

Copulas offer a useful tool in modelling the dependence among random variables. In the literature, most of the existing copulas are symmetric while data collected from the real world may exhibit asymmetric nature. This necessitates developing asymmetric copulas that can model such data. In the meantime, existing methods of modelling two-dimensional reliability data are not able to capture the t...

BACKGROUND One of the methods used for standard setting is the borderline regression method (BRM). This study aims to assess the reliability of BRM when the pass-fail standard in an objective structured clinical examination (OSCE) was calculated by averaging the BRM standards obtained for each station separately. MATERIALS AND METHODS In nine stations of the OSCE with direct observation the e...

............................................................................................................................... I ACKNOWLEDGMENTS ......................................................................................................II TABLE OF CONTENTS ...................................................................................................... III LIST OF FIGURES ........