We survey recent results on the enumeration of formal languages. In particular, we consider enumeration of regular languages accepted by deterministic and nondeterministic finite automata with n states, regular languages generated by regular expressions of a fixed length, and ω-regular languages accepted by Müller automata. We also survey the uncomputability of enumeration of context-free langu...

Dwarf mistletoes are markedly host specific, perennial, obligate parasites. The success of mistletoe populations is tied not only to the suitability of the environment, but also to the availability and conditions of the hosts they infect. Thus, the dynamics of forest stand development and change exert major influences on the capacity of dwarf mistletoes to spread, intensify, and cause damage to...

Three experiments examined a u d i t o r y v i s u a l i n t e g r a t i o n o f t e m p o r a l r e l a t i o n s by i n f a n t s . I n t h e f i r s t experiment i n f a n t s o f 3, 6 and 10 months o f age were p l a c e d midway between two f l a s h i n g v i s u a l d i s p l a y s . Tones, t e m p o r a l l y s y n c h r o n i z e d t o one o f the v i s u a l d i s p l a y s , emanated...

Switched-capacitor ladder f i l t e r s and CCD tr a n s v e r s a l f i l t e r s have developed i n t o two competitive approaches f o r implementing high p e r f o r mance f i l t e r s which can be f u l l y i n t e g r a t e d using MOS-LSI technology [1,2] I n some respects the two techniques are s i m i l a r since they are both analog sampled data f i l t e r s which make use of charge ...

A p p l i c a t i o n t o t r a n s o n i c f low shows I n t r o d u c t i o n The Reynolds numbers f o r a l a r q e a i r p l a n e a r e o f t h e o r d e r o f t h i r t y m i l l i o n . Therefore, laminar f l o w i n t h e boundary l a y e r becomes uns tab le , r e s u l t i n g i n t u r b u l e n t f l o w over iribst o f t h e sur face of t h e a i r p l a n e . However, t h e comput...

at the beginning of this paper, design and manufacturing stages of the 3 degree of freedom test stand for a remotely piloted helicopter is described, in which the helicopter is able to rotate about its three primary accesses. in the next parts the dynamical model of the rph in the yaw channel is presented and lateral transfer function of rph (yaw channel) is extracted by performing several test...

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...

n I s i h t , k r o w a k r o w e m a r f r o f e h t o i t a m i t s e n f o e h t e u g i t a f e g a m a d n o i t a g a p o r p n i d e s o p o r p s i s e t i s o p m o c P R F C . o r c a M e l a c s a n e m o n e h p h c u s s a s s e n f f i t s d n a h t g n e r t s n o i t a d a r g e d e r a d e t c i d e r p y b g n i t c e n n o c o r c i m e l a c s d n a o r c a m e l a c s e ...

high moisture levels in fresh dairy manure provide a suitable environment for growth of pathogens and cause environmental pollution. dry manure can be used for different purposes in agriculture and in livestock industry. such heat properties of manure as specific heat, thermal conductivity and thermal diffusivity are important needed factors for the design and development of a suitable efficien...

I n t he System f o r P a r a l l e l R e p r e s e n t a t i o n o f Knowledge (SPARK) the i n g r e d i e n t o f c o n c e r n i s no t t h e h i g h l e v e l , h u m a n l i k e , m o d e l i n g o f k n o w l e d g e , bu t t h e compac t , e f f i c i e n t , and e f f e c t i v e i n t e r n a l r e p r e s e n t a t i o n and use of t h e k n o w l e d g e . SPARK employs a knowledge b...