in isfahan tubal ligation project was initiated in july 1970. a total of 310 women, referring to the university of isfahan health center and or admitted to the arnin maternity hospital, were interviewed for tubal ligation procedure. thirty six patients rejected tubal ligation and 274 women accepted. of the latter group 114 patients did not refer later on. a total of 160 tubal ligations were per...

the process of planning and initiating health services development has been described as conceived and experienced by the working group of the health services development research project in iran. the technical steps (conceiving and describing the health services system, development of plans, preparatory step and implementation) as well as political support needed are defined and described. the...

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Background: One of the most important issues in the empowerment and development of managers is to pay attention to organizational commitment and its effect on organizational commitment and productivity in organization managers. Therefore, this research compares the effectiveness of organizational commitment training on the productivity and organizational commitment of managers and project manag...

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We review the search for the top quark conducted by the DØ collaboration using data from the Fermilab pp collider. Based upon a preliminary analysis of an integrated luminosity of about 13.5 pb −1 , we have searched for tt production and decay in the experimental channels involving a pair of dileptons (e or µ) plus jets, or single leptons plus jets. Summed over all channels, we observe 7 events...

The ionizing spectral energy distribution of quasars exhibits a steepening of the distribution short-ward of 1200 Å. The change of the power-law index from approximately −1 to −2 so far has been interpreted as being intrinsic to quasars. We study an alternative interpretation, in which a tenuous absorption screen is responsible for the change of index. We find that the most successful function ...

This paper proposes a feature-based multi-sensor fire detector operating on ordinary video and long wave infrared (LWIR) thermal images. The detector automatically extracts hot objects from the thermal images by dynamic background subtraction and histogram-based segmentation. Analogously, moving objects are extracted from the ordinary video by intensity-based dynamic background subtraction. The...