We present an algorithm for compressing pattern databases (PDBs) and a method for fast random access of these compressed PDBs. We demonstrate the effectiveness of our technique by compressing two 6-tile sliding-tile PDBs by a factor of 12 and a 7-tile sliding-tile PDB by a factor of 24.

Centuries ago, European builders developed a reliable means of installing tile for high-traffic, high-use applications which relied on the laying of a sand strata between the structural substrate and the mortar-bed/tile composite top layer. Due to space (height) requirements and other concerns, the sand strata method for tile installation is, for all practical purposes, extinct. Modern theory, ...

In this study, a series of pretreatments, including ice-glazing, polyphosphate impregnated, and both ice-glazing were employed to pretreat shucked oysters in order explore the optimal processing conditions for long-time storage. The effect repeated freezing-thawing cycles on quality was evaluated. Several indicators used investigate effects pretreatment. For VBN (volatile salt-based nitrogen) v...

We present a method for generating well-distributed point according to a given density. Our method is based on a single precomputed tile. The tile is both self-similar and hierarchical. A selfsimilar tile allows to increase the density of points in large steps by recursively subdividing the tile. A hierarchical tile allows to smoothly adjust the density of points. We present an interesting meth...