Pyramidal Systems for Computer Vision Jr. Walden Grid middleware and Grid services 9783540631705 Grid middleware and Grid services are two pillars of grid computing systems and applications 13] his book is intended as a comprehensive introduction to the theory of T principalsheaves andtheirconnections inthesettingofAbstractDi the processors are arranged in planes (from a base to an apex) each one of which is generally a reduced (usually by a power of two) version of the plane underneath: these processors are horizontally interconnected (within a plane) and vertically connected with "fathers" (on top planes) and "children" on the plane below This arrangement has a number of interesting features