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s u b s e t s . T h i s s t r u c t u r e , u s u a l l y v i e w e d a s c o d i f y i n g a t r i a n g u l a t e d s p a c e , i s u s e d h e r e d i r e c t l y , t o d e s c r i b e " s p a c e s " w h o s e g e o m e t r i c r e a l i s a t i o n c a n b e m i s l e a d i n g . A n i n t r i n s i c h o m o t o p y t h e o r y , n o t b a s e d o n s u c h r e a l i s a t i o n b u t a g...

F o r e s t v e g e t a t i o n , e s p e c i a l l y t r e e r o o t s , h e l p s s t a b i l i z e h i l l s l o p e s by r e i n f o r c i n g s o i l s h e a r s t r e n g t h . To e v a l u a t e t h e e f f e c t of t r e e r o o t s on s l o p e s t a b i l i t y , i n f o r m a t i o n a b o u t t h e amount o f r o o t s and t h e i r s t r e n g t h s h o u l d b e known. A s i m u l...

L e x i c a l f u n c t i o n a l grammar (LFG) i s a n a t t e m p t t o s o l v e p r o b l e m s t h a t a r i s e i n t r a n s f o r m a t i o n a l grammar and A T N f o r m a l i s m s ( B r e s n a n , 1982 ) . A n o t h e r p o w e r f u l f o r m a l i s m f o r d e s c r i b i n g n a t u r a l l anguages f o l l o w s f r o m a method f o r e x p r e s s i n g grammars i n l o g i c...

D u r i n g most o f t he l a s t two decades , c o m p u t a t i o n a l l i n g u i s t s and A I r e s e a r c h e r s w o r k i n g o n n a t u r a l language have assumed t h a t phrase s t r u c t u r e grammars, d e s p i t e t h e i r c o m p u t a t i o n a l t r a c t a b i l i t y , were u n s a t i s f a c t o r y d e v i c e s f o r e x p r e s s i n g the s y n t a x o f n a t u r...

The c o n t r o l s t r u c t u r e o f a q u e s t i o n a n s w e r i n g s y s t e m i s d e r i v e d f r o m a s e t o f b a s i c a s s u m p t i o n s . F o r i t s d e s i g n and i m p l e m e n t a t i o n , a n o r m a l a l g o r i t h m i c l a n g u a g e i s u s e d . The d e s i g n l e a d s t o " s y m m e t r i c " p r o c e d u r e s , t h e r e s u l t i n g p r o g r a m s...

Metal ox ides suppor ted on z e o l i t e s have been demonstrated as e f f e c t i v e regenerable 4 e s u l f u r i z a t i o n a g e n t s f o r h i g h tempera ture removal of hydrogen s u l f i d e from f o s s i l f u e l s . D e s u l f u r i z a t i o n occur s by s u l f i d e format ion wi th Fe or Zn on t h e s u r f a c e of t h e z e o l i t e l a t t i c e w i t h t h e hydrogen s...

e r e h T e v a h n e e b y n a m t n a c i f i n g i s s t n e m e c n a v d a n i e h t t n e m p o l e v e d f o r o s n e s d n a r o s n e s k r o w t e n s e i g o l o n h c e t r o f l a r u t c u r t s h t l a e h g n i r o t i n o m . s n o i t a c i l p p a s A l a r u t c u r t s n i r o t i n o m g s e i g o l o n h c e t m r u t a e n a d i e h t r n o i t a t n e m u r t s n i on ...

Rhode R i v e r s y s t e m have shown t h a t a d i v e r s e w e t l a n d ( M i l l Swamp) h a s a s i g n i f i c a n t i m p a c t on n u t r i e n t r u n o f f f r o m u p l a n d w a t e r s h e d s . I n t h i s p a p e r we p r e s e n t d a t a t o d e m o n s t r a t e how w a t e r q u a l i t y p a r a m e t e r s change as s u r f a c e and s u b s u r f a c e w a t e r moves t h...

b i n a t i o n a l s w i t c h i n g n e t w o r k s which c o n t a i n s u f f i c i e n t r e d u n d a n c y s o t h a t t h e p r e s e n c e o f any s i n g l e f a u l t can b e d e t e c t e d. I t i s w e l l known t h a t (w i t h i n b r o a d l i m i t s) any i s o l a t e d f a u l t i n a s i n g l e-o u t p u t n e t w o r k may b e d e t e c t e d w i t h a b o u t 2 : 1 r e d ...