Rectangle Packing is considered a difficult NP-problem which has several application areas such as integrated circuit systems, and pallet packing. Generally, Rectangle Packing Problems consist of a set of rectangles for which a configuration must be found, the intention is to minimise the surface-area of the configurations bounding box. Existing research has predominantly investigated algorithm...

A polycube in dimension d is a finite union of unit d-cubes whose vertices are on knots of the lattice Zd . We show that, for each family of polycubes E, there exists a finite set F of bricks (parallelepiped rectangles) such that the bricks which can be tiled by E are exactly the bricks which can be tiled by F . Consequently, if we know the set F , then we have an algorithm to decide in polynom...

A computer-controlled display of random dots was used to study perceptions of depth. In this display, a field of stationary random dots surrounded a rectangular area in which random dots moved with uniform velocity in a single direction. The boundaries of this rectangle did not move. When dot motion was perpendicular to the longer boundary of the rectangle (occluded motion), the rectangle seeme...

DAVM are typically classified by location of the involved sinus or shunt as well as by the pattern of venous drainage. [5] The pattern of venous drainage is a key factor predicting the natural history of these lesions and provides the foundation for the widely adopted Borden [7] and Cognard [8] classification systems. Borden type I DAVM are mostly benign lesions that exhibit normal antegrade fl...

Wegener 's granulomatos is , a d isease of unknown et io logy, is character ized by a granulomatous vascul i t is of the upper and lower r e s p i r a t o r y t r a c t s . Va r y i n g d e g r e e s o f s y s t e m i c v a s c u l i t i s o f s m a l l arter ies and veins may also be seen <1>. Renal disease in the form of f o c a l o r d i f f u s e n e c r o t i z i n g g l o m e r u l i t i ...