a synoptic method based on stream analysis is applied to understand the governing mechanism of summer rainfall occurrence in the south of iran. based on this, the rainfall data of 152 stations of iran were analyzed for a 33-year period (1970-2002). investigating the spatial and temporal distribution of summer rainfall, a typical rainy region is recognized in the south east of iran. it is found ...

The p a p e r p r e s e n t s t h e r e s u l t s o f r e s e a r c h c o n c e r n i n g t h e s t a b i l i t y o f a n e v o l u t i o n a r y p r o c e s s f o r r andomly g r o w i n g d i g i t a l s t r u c t u r e s . The comp u t e r model f o r t h e m u t a t e d geno t ype c a s e i s c o n s i d e r e d . The geno type ( i n t h e models t h e s e t o f r u l e s f o r g r o w t h ...

in order to comparison the foliar application of biological, biostimulator and chemical fertilizers on growth characteristics and yield of saffron, a factorial experiment was conducted in a completely randomized block design with four replication in 3- year field of saffron in dargaz, khorasan razavi province from 2010 to 2011. the first factor had 5 levels included biostimulator fertilizer bio...

regional analysis is one of the important methods for estimating the low flow in ungagged regions. investigation of the relations between effective factors of hydrological drought is the most important strategy to contrast and reduction of drought losses. in this study to analyze of low flow, the daily discharge data from 20 gauging stations with 25 years period (1988-2012) in the kashafroud ba...

This paper gives an account of the R/S statistic and its known properties. I t assesses the adequacy of the asymptotic distribution of the statistic in the case of samples of small and moderate size, and suggests an improved approximation based on the beta distribution. The results indicate that the proposed beta approximation is superior to the asymptotic distribution for practical purposes. H...

1 . I n t r o d u c t i o n R e c e n t p r o g r e s s i n t h e s t u d y o f b o t h a b s o r p t i v e a n d d i s p e r s i v e b i s t a b i l i t y i n l a s e r d i o d e s (LDs) i s r e v i e w e d / I / . T h e m o s t d i s t i n c t i v e f e a t u r e o f b i s t a b l e LDs i s t h a t t h e y h a v e o p t i c a l g a i n . O p t i c a l g a i n r e s u l t s i n a d v a n t a g...

A t heo rem p r o v i n g sys tem has been programmed f o r a u t o m a t i n g m i l d l y complex p r o o f s b y s t r u c t u r ­ a l i n d u c t i o n . One pu rpose was t o p r o v e p r o p e r ­ t i e s o f s i m p l e f u n c t i o n a l p rograms w i t h o u t l o o p s o r a s s i g n m e n t s . One can see t h e f o r m a l sys tem as a g e n e r a l i z a t i o n o f number t h e ...

the aim followed in this study was to compare the performance of multiple regression vs neural network models to predict the activity of antioxidant enzymes super oxide dismutase (sod), cat alase (cat), ascorbate pero xidase (apx) and peroxidase (pox) in the shoots of wheat (triticum aestivum), alvand cultivar in a soil polluted with cadmium. the treatments consisted of four levels of cadmium (...

g e n e r a l o b s e r v a t i o n ( i n W U P P E R a n d M E I J E R , 1 9 9 7 a , b ) , w h i c h i s s u b s e q u e n t l y r e f i n e d a n d d e t a i l e d . T h i s l e a d s t o d e f i n i t i o n s o f a c o n s i s t e n t s e t o f n o t i o n s w i t h r e s p e c t t o w h i c h i m p o r t a n t a s p e c t s o f a r a t i o n a l d e s i g n p r o c e s s c a n b e u n d e r...

" 1 9 8 8 , T e c t o n i c a n d m e t a m o r p h i c e v o l u t i o n o f . t h e . B e r n a r d s t o n n a p p e 1 a n d t h e B r e n n a n H i l l t h r u s t i n t h e B e r n a r d s t o n C h e s t e r f i e l d r e g i o n . o f t h e B r o n s o n . H i l l a n t i c l i n o r i u m : i n B o t h n e r , W . A . , E d i t o r , N e w E n g l a n d I n t e r c o l l e g i a t e G e...