An isolation enhanced dual polarized microstrip patch antenna has been designed for Sband Synthetic Aperture Radar. This antenna operates at 3.125 GHz with operating bandwidth of 150 MHz or 4.8%. The electromagnetic power is coupled from the feed line to radiating patch through proximity coupling feeding technique for better bandwidth achievement. A centre groundshorted microstrip line is creat...

one of the necessary preconditions to provide people's active participation in performance of development plans and the most basic of preparation to pave the way for the successful implementation of the plan is selection of appropriate theory in the field of justice and welfare for this plans. in this research, while reviewing development plans of the islamic republic of iran, because the ...

In two studies, individuals' dominant achievement goals were assessed using a new, simple, and conceptually precise measure based on Elliot and McGregor's (2001) 2 x 2 framework. Next, the four groups were compared in terms of achievement-relevant variables, including need for achievement, perfectionism, perceived competence, interest, and graded performance. As expected, a very high percentage...

in discussion relating to management, motivational factors are one of the major indicators and effective variables in organizational strategy and achieving job success. this study with the aim of cognition of the relation of some studied variables and the motive of achievement and success in cooperatives managers and determining the contribution of each factor by use of correlation and expost f...