As the processor-memory performance gap continues to widen, application performance becomes increasingly limited by the memory system. Applications that employ linked data structures (LDSs) are particularly challenging from the standpoint of the memory system because of the memory serialization eeects associated with indirect memory addressing. Also known as the pointer chasing problem, such me...

Correct regulation of the replication licensing system ensures that no DNA is rereplicated in a single cell cycle. When the licensing protein Cdt1 is overexpressed in G2 phase of the cell cycle, replication origins are relicensed and the DNA is rereplicated. At the same time, checkpoint pathways are activated that block further cell cycle progression. We have studied the consequence of deregula...

Rutishauser, Gragg and Harrod and finally H.Y. Zha used the same class of chasing algorithms for transforming arrowhead matrices to tridiagonal form. Using a graphical theoretical approach, we propose a new chasing algorithm. Although this algorithm has the same sequential computational complexity and backward error properties as the old algorithms, it is better suited for a pipelined approach....

Rutishauser, Gragg and Harrod and nally H.Y. Zha used the same class of chasing algorithms for transforming arrowhead matrices to tridi-agonal form. Using a graphical theoretical approach, we propose a new chasing algorithm. Although this algorithm has the same sequential computational complexity and backward error properties as the old algorithms, it is better suited for a pipelined approach. ...

Psychologists have long been captivated by the perception of animacy - the fact that even simple moving shapes may appear to engage in animate, intentional, and goal-directed movements. Here we report several new types of studies of a particularly salient form of perceived animacy: chasing, in which one shape (the 'wolf') pursues another shape ('the sheep'). We first demonstrate two new cues to...