(3GdbVGA GdEOGQj (B:s (3OYhi GdEdZGA OYhi GdbVGA GdcGed (B/s - (3YHO GdZfj HSjhfj YHO Gddgs ([(3ecGf GdfGTQ ZjQ eMOO(B] :s [(3GSe GdfGTQ ZjQ eMOO(B](3,s, 2009)
. 412-411(3HHdjhLQGajG(B: (3UaMGJ(B.s
(3jTJed Ydi EQLGYGJ HHdjhLQGajIs
(3GdfU HGddZI GdYQHjIs
Keywords: (3GdbVGA GdEOGQj hhXGFags; (3GdbGfhf GdEOGQjs