The aim of this article was to evaluate the time course of paroxysmal positioning vertigo (PPV) and to investigate correlations with environmental and seasonal factors through a retrospective statistical analysis spanning 4 years (2001-2004). Applying rigorous diagnostic criteria, we selected 575 patients (429 women and 146 men; age range, 17-94 years; mean age, 55 years for men and 56 years fo...

Neural Networks are broadly applied in a number of fields such as cognitive science, diagnosis, and forecasting. Medical decision support is one area of increasing research interest. Ongoing collaborations between cardiovascular clinicians and computer science are looking at the application of neural networks (and other data mining techniques) to the area of individual patient diagnosis, based ...

CONTEXT During the past 20 years, colleges of osteopathic medicine (COMs) have made several advances in research that have substantially improved the osteopathic medical profession and the health of the US population. Furthering the understanding of research at COMs, particularly the factors influencing the attainment of extramural funds, is highly warranted and coincides with the missions of m...

There is a major question of how to perform an accurate risk analysis of systems with software-based components (often subsumed under the rubric electrical/electronic/programmable-electronic, or E/E/PE systems). There is a consensus amongst senior scientists and engineers, backed by rigorous statistical reasoning, that developing systems by ‘the usual methods’ and testing to identify and elimin...

A highly-efficient three-port output of metal-mirror-based grating is proposed in this paper. The metal-mirror-based grating can function as a beam splitter which can diffract the normal incident wave into the 0th and the ±1st orders for both TE and TM polarizations with the usual duty cycle of 0.5. The analysis of the grating parameters can be optimized by rigorous coupled-wave analysis. The h...