This study uses a computer model to simulate a quadrupole mass filter (QMF) instrument under different operating conditions for Mathieu stability zones 1 and 3. The investigation considers the factors that limit the maximum resolution (R(max)), which can be obtained for a given QMF for a particular value of scan line. Previously, QMF resolution (R) has been found to be dependent on number (N) o...

This Article focuses on the 1990s renaissance in Atlanta, a time where the rate of violent crime was at the lowest it had been in years and the population was growing for the first time in thirty years. It focuses on three specific explanations of the renaissance: the holistic approach to development, the Empowerment Zone, the community policing program, and the reinvention of public housing. T...

BACKGROUND One of the most important and useful models for assessing hospital performance is the Pabon Lasso Model, a graphical model that determines the relative performance of hospitals using three indicators: 1. Bed Occupancy Rate (BOR); 2. Bed Turnover (BTO); 3) Average Length of Stay (ALS). The aim of this research is to investigate the performance of the hospitals affiliated with Urmia Un...

OBJECTIVES To develop and test a new video based method for match analysis that combines football specific and medical information to achieve a better understanding of the injury mechanisms and events leading up to high risk situations. METHODS Football incident analysis (FIA) is a video based method describing incidents that may result in an injury using 19 variables and categories modified ...

Border zones between normal and ischemic tissue have been implicated as a cause of arrhythmic cardiac activity. A variety of experiments with coupled cells and strips of tissue has been designed to understand the arrhythmogenic effects of border zone currents. In this paper, we use systems of differential equations to model an ischemic (depolarized) cell (or region) coupled to a normal cell und...

This paper is a synthesis of the results from the project INTEWON and related studies. The link between the physiological thermoneutral zone (TNZ) and the thermal comfort zone (TCZ) is discussed. Secondly, we discuss the relation between thermal preference and thermal sensation and how physiological parameters, such as skin temperature can predict thermal sensation. It is shown that the identif...

Zone analysis (ZA) is a natural language processing (NLP) technique the application of which include document screening, citation analysis, and information extraction (IE). With a huge volume of biological work now available in archived articles and abstracts and a critical need for an effective use of the information contained, we aim to provide a technique for pinpointing and organizing exper...

The aims of this study were (i) to describe the relative intensity of simulated tennis play based on the cumulative time spent in three metabolic intensity zones, and (ii) to determine the relationships between this play intensity distribution and the aerobic fitness of a group of competitive players. 20 male players of advanced to elite level (ITN) performed an incremental on-court specific en...