BACKGROUND Ethnic minority position is associated with increased risk for psychotic outcomes, which may be mediated by experiences of social exclusion, defeat and discrimination. Sexual minorities are subject to similar stressors. The aim of this study is to examine whether sexual minorities are at increased risk for psychotic symptoms and to explore mediating pathways. METHOD A cross-section...

The hypothesis of a companion object (Nemesis) orbiting the Sun was motivated by the claim of a terrestrial extinction periodicity, thought to be mediated by comet showers. The orbit of a distant companion to the Sun is expected to be perturbed by the Galactic tidal field and encounters with passing stars, which will induce variation in the period. We examine the evidence for the previously pro...

Traditional operating systems present fixed, high-level abstractions to application developers and users. These are part of standard APIs, such as POSIX or X/OPEN, which are typically implemented as a thin library layer on top of monolithic kernels. Recent efforts in operating system research, however, have focussed on providing more flexibility and new functionality to applications by lowering...

In this paper we present a Semantic Web application (http:// uranos.khaos.uma.es/atfast), which is based on a Semantic Web infrastructure (NEMESIS). This application is a Semantic Web graphical tool used for analyzing transcription factor databases. NEMESIS not only solves several problems of the Semantic Web but is also a generic infrastructure for the Semantic Web. This infrastructure, togeth...

This paper presents the implementation of MPICH2 over the Nemesis communication subsystem and the evaluation of its sharedmemory performance. We describe design issues as well as some of the optimization techniques we employed. We conducted a performance evaluation over shared memory using microbenchmarks as well as application benchmarks. The evaluation shows that MPICH2 Nemesis has very low c...

A patient who has a nemesis fear as the basic process in his psychoneurosis feels that he is destined to repeat the life course of one of his parents to eventual long-term psychosis, or incapacitating physical illness or death by illness or accident. He feels that this will occur at about the same age as that at which his parent suffered his misfortune. The patient during his childhood and adol...