the main purpose of this study was to measure the level of technical efficiency of sugar beet producers and determination of factors affecting it. a sample of 144 producers in the main sugar beet growing areas of hamedan, nahavand, malayer and asadabad were selected by two stage cluster sampling method. data were collected through interviews during farming year of 2001-2002.technical efficiency...

Introduction. In recent years, military conflicts are moving to a fundamentally new level of development, which is associated with the widespread use geographically distributed large groups remotely controlled robotic systems, rapid growth information volumes, significant increase in speed its processing, instant messaging situational awareness, management, response, etc. Purpose. The article d...

Background The measurement of vertebral axial rotation according to Perdriolle and to Raimondi is reliable on standard films, where apical vertebrae show a proper size for the scale of both systems. Current digital radiographs are delivered on a CD format (screen) or on a film format, usually with a non proper size for the two above mentioned methods. No system has been described for a rapid as...