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...

The authors have developed a method for large-scale isolation of metaphase chromosomes from HeLa cells. The distinguishing feature of this method is the use of a pH sufficiently low (about 3) to stabilize the chromosomes against mechanical damage. Many milligrams of fairly pure, morphologically intact chromosomes can be isolated in 8 hr or less of total working time. The isolated chromosomes co...

The electrical resistance of a notched compact specimen for determination of plane-strain fracture toughness was calculated using numerical methods coupled with the Schwarz-Christoffel transformation. Experimental measurement of this resistance is commonly used to obtain the crack length in notched specimens subjected to stress corrosion and hydrogen embrit t lement tests. The results presented...

A mathemat ica l t r ea tmen t is developed which yields equations re la t ing fa rada ic current , voltage, and t ime when an a l te rna t ing vol tage is appl ied to an e lect rolyt ic cell composed of a p lane and aux i l i a ry electrodes immersed in a solut ion containing in i t ia l ly suppor t ing e lec t ro ly te and only r eve r s ib ly oxidizable or reduc ib le species. Both ox idant ...

D i s i n f e c t i o n of wastewater e f f l u e n t s w i th u l t r a v i o l e t ( W ) l i g h t h a s r e c e n t l y become a r a p i d l y growing and c o m p e t i t i v e a l t e r n a t i v e o c h l o r i n a t i o n . Over 20 l a r g e scale W systems t h e past 2 y e a r s i n North America. U l t r a v i o l e t d i s i n f e c t i o n can avo id t h e environmental problems a s s...

This paper describes informally an algorithm for the generation frolll un(|erall(| overspceified feature structures. The generator require~ a grammar, :t goal category m~et a feature structure mq input, and derives all strings whose corl'eSl)ondillg feature strlltCtllre is llot ill Colltrlu|iction to the input structure. 1 I n t r o d u c t i o n In this pape r I will present all algorithut for...

-We consider utility-constrained Markov decision processes. The expected utility of the total discounted reward is maximized subject to multiple expected utility constraints. By introducing a corresponding Lagrange function, a saddle-point theorem of the utility constrained optimization is derived. The existence of a constrained optimal policy is characterized by optimal action sets specified w...

P i e r c e , N . B . 1900. P e a c h l e a f c u r l : I t s n a t u r e and t r e a t m e n t . U S D A Div . V e g . P h y s i o l . & Patho l . B u l l . 2 0 . 204 pp. $ 8 . 0 0 . Rudo lph , B . A . 1931. V e r t i c i l l i u m h a d r o m y c o s i s . H i lgard ia 5:197-361. $ 5 . 0 0 . -S h e a r , C . L . & A. K . W o o d . 1913. S t u d i e s o f f u n g o u s p a r a s i t e s be lon...