A number t h e o r y approach to p rob lem s o l v i n g i s p r e s e n t e d u s i n g t h e tower o f cubes p u z z l e as an e x ample . Some c o n v e n t i o n a l methods o f s o l v i n g t he p u z z l e a re f i r s t d i s c u s s e d . The p u z z l e i s t h e n t h o r ough l y s t u d i e d u s i n g a n e n t i r e l y d i f f e r e n t app roach . S p e c i a l numbers a re use...

A b s t r a c t P h o t o s y n t h e t i c r e a c t i o n c e n t e r s r e a l i z e t h e p r i m a r y s t e p s o f t h e b i o c o n v e r s i o n o f l i g h t e n e r g y . They a r e c o m p l e x membrane p r o t e i n s w h i c h c o n t a i n s e v e r a l m o l e c u l e s o f p i g m e n t s and e l e c t r o n c a r r i e r s , o r g a n i z e d so a s t o t r a n s f e r e l e ...

E s w e r d e n wei tere U n t e r s u c h u n g e n ü b e r d ie V e r ä n d e r u n g des a n o r g a n i s c h e n P h o s p h a t s p i e g e l s in d e r Z e l l e , als F o l g e des L i c h t D u n k e l W e c h s e l s mi tge te i l t . D i e G e s c h w i n d i g k e i t d i e ser V e r ä n d e r u n g e n ist v o n d e r A n b z w . A b w e s e n h e i t von C 0 2 u n a b h ä n g i g ...

U s i n g a mode l f o r t h e e v o l u t i o n o f f i t n e s s , we s h o w how C o m p u t e r S i m u l a t i on c a n be u s e d to e x a m i n e w h e t h e r a t h e o r e t i c a l mode l c a n be t e s t e d b y e x p e r i m e n t a l d a t a . A m a x i m u m l i k e l i h o o d f i t o n s i m u l a t e d m e a s u r e m e n t s was a b l e to s e p a r a t e t h e p a r a m e t e...

The e s s e n t i a l c r e d i t o f t h e s e o p e r a t i o n s i s t h e i r n o n d e t e r m i n a t i o n , i . e . a m b i g u i t y and i n f o r m a l i t y o f t h e i r r e s u l t s . Consequently, t h e r e a l i z a t i o n o f v a r i o u s i n t e l l e c t u a l problems may p r o ceed in d i f f e r e n t ways. Thus we have a c a l o u l u s o n hand ( 2 , p.203), i . e . w ...

s y n t h e s i s when t h e s o l u t i o n o f a l a t e r subgoal. undoes or i n t e r f e r e s w i t h a comp le ted s o l u t i o n to a p r e c e d i n g s u b g o a l . Subgoal a n n i h i l a t i o n d u r i n g p l a n s y n t h e s i s i s d i s c u s s e d , and a u n i f o r m s o l u t i o n t o t h e g e n e r a l p rob lem i s p r e s e n t e d . The two phases o f the t h e o r...

Mechanism of Brown-Rot Decay B r o w n r o t F u n g i r e p r e s e n t o n e o f t h e m o s t economically important groups of wood decay micmorganisms. Some accounts estimate that as high as 80% of all in-service wood decay is c a u s e d b y b r o w n r o t F u n g i . cur ran t wood preservatives protect wood by means of broad spectrum biocides. Understanding the precise mechanism of brow...

This paper presents a small-open-economy model calibrated to Ir ish data. The model can be used for many purposes. It is applied here to the E M U debate. It comes close to replicating the employment effects of sterling weakness (with Ireland in E M U ) reported in the recent E S R I study (Policy Research Series Paper No. 28, 1996). When the assumptions on wage flexibility are changed in an ar...

I n t h i s p a p e r a t t e m p t s h a v e b e e n f o c u s e d o n u s i n g w i n d o w t r a c k i n g t e c h n l q u e t o a n a l y s e h u m a n b o d y m o v e m e n t . A c c o r d i n g t o t h e b e h a v l o r of h u m a n v i s i o n s y s t e n , a n I d e a of r o u g h a n d p r e c i s e s e a r c h s p a c e i s p r o p o s e d in o r d e r t o r e d u c e t h e s e a r c ...

a p p o in te d b y t h e k r d o f D ir e c t o r s o f t h e A s s o c ia-»n i n a c c o r d v irith t h e p r o v is io n s t h e A s s o c ia t io n 's C o n s t it u t i o n , i d w i t h t h e S e c r e t a r y o f t h e A s-i a t i o n o n A u g u s t 8 t h e f o l l o w-S l i s t o f c a n d id a t e s : J. A l l y n S t e a r n s ; f o r 5 t h V ic e P r e s id e n t , C la r e n c e W...