A generalization of the well-known shu f l e network i s proposed f o r multihop lightwave communication. In the classical definition of 4 shu f l e network, i.e., N = kpk where N i s the number of nodes and k i s the n u m ber of stages w i th base p , the realizable values of N are veay discrete and m a n y of the intermediate values of N are no t ,realizable. In this paper, we propose 4 new ...

Fol lowing the enormous increase in the use of wireless mobile telephony across the wor ld concerns on hea l th e f fec t s o f hand-he ld mobi le phone rad ia t ions have induced a l a rge body of research , bo th ep idemio log ica l and exper imenta l . Th is wi re less t echnology uses e lec t romagne t ic radiation in microwave range which may be harmful to human health. Parts of the radio ...

This art icle discusses three theories and approaches in the f ield of counselling that have the potent ial to advance understanding of counselling processes. One, developed within educat ional psychology and f irst published in 1983, is Gardner’s theory of mult iple intelligences (MI) (Gardner, 1983, 2006). Gardner argued against a one-dimensional view of intelligence, in favour of a pluralist...

Automat i c and rapid network service restoration (self-healing) w h e n failures occur i s of increasing importance f o r network operations and managemen t as network speed and bandwidth increase. In th is paper, we s tudy the self-healing problem of a n ATM network at the virtual pa th (VP) configuration level. W e analyze the design issues o f self-healing algorithms, and develop a state t ...

'User involvement' i n t h e developnent of information systems i s o f t e n assumed t o be key t o succes s fu l implementation. However, f e w empi r i ca l s t u d i e s have c l e a r l y demonstrated a r e l a t i o n s h i p between u s e r involvement and t w o key i n d i c a t o r s of system success : system usage and u s e r in format ion s a t i s f a c t i o n . The a u t h o r s ...

State-of-the-art thruster technologies are reviewed and evaluated in view o f p o t e n t i a l microspacecraft applications. Microspacecraft are def ined in this s tudy as spacecraft with masses between 1 and 20 kg. Based on this review of existing technologies, future development needs for micropropulsion systems are defined and advanced new micropropulsion c o n c e p t s especially designed...