Background: Quality of life evaluates the general well-being of individuals and it can be considered as one of the important aspects in programming and giving service to disabled people. Blindness is one of the most important kinds of physical disability that has a direct effect on quality of life, so t his study aimed to explore how war blindness influences the quality of life .   Methods: I...

The property that Rasch recognised can be understood by considering two persons A and B with imagined abilities βA and βB. If these two persons attempt a set of test items, and a tally is kept of the number of items N10 that person A answers correctly but B answers incorrectly, and of the number of items N01 that person B answers correctly but A answers incorrectly, then under the Rasch model, ...

Der Einsatz drahtloser Netzwerke findet immer mehr Befürworter, da sich so die kostenintensive und oft umständliche Verkabelung vermeiden lässt. Die elektromagnetische Verträglichkeit dieser Technik ist gut und deshalb auch für Krankenhäuser und Praxen interessant. Allerdings ermöglichen Funknetzwerke sogenannten "Wardriveren", die sich problemlos in die Datenübertragung Dritter einloggen, rasc...

By using the Rasch model, much detailed diagnostic information is available to developers of survey and assessment instruments and to the researchers who use them. We outline an approach to the analysis of data obtained from the administration of survey instruments that can enable researchers to recognise and diagnose difficulties with those instruments and then to suggest remedial actions that...