We introduce the concept of a subordination, which is dual to the well-known concept of a precontact on a Boolean algebra. We develop a full categorical duality between Boolean algebras with a subordination and Stone spaces with a closed relation, thus generalizing the results of [14]. We introduce the concept of an irreducible equivalence relation, and that of a Gleason space, which is a pair ...

AIM To investigate how nurses and physicians perceive organizational culture, their integration into the organizational processes, and relations within a health care team. METHODS We performed a cross-sectional study that included 106 physicians and 558 nurses from 14 Slovenian hospitals in December 2005. The hospitals were randomly selected. We distributed the questionnaires on the same day ...

The purpose of this paper is to introduce a bivariate Lévy process constructed by subordination of a Brownian motion with independent components by a bivariate subordinator. A class of subordinated processes extensively studied in finance is the Variance Gamma one. They have been first introduced in literature by Madan and Seneta [5], [2], as models for stocks return. Let B̃ be a Brownian motion...

Headings are employed in most print documents, in PowerPoint presentations, and on many web pages. A key role of headings is to indicate the logical subordination of the sections of content that make up the print or online document. Although the basic principles of showing subordination with headings are familiar to all, there are some useful techniques that are rarely acknowledged and others t...