For a general acceptance, -kernels must be fast and not burden applications. For ful lling these conditions, cache architectures require -kernels to be small. The L4 -kernel shows that smallness can be achieved. 1. -kernels must be small This is not obvious. Most rst-generation -kernels were large; typically they need 300 Kbyte of code and 140 system calls. Some of their architects argued that ...

Engine downsizing technology benefits the environment in terms of emission gases and also reduces usage fuel automobiles. Reducing number pistons or their dimensions is among most suitable techniques for engine downsizing. However, reducing size will cause another issue to with withstanding applied forces generated due combustion during combustion. Therefore, this research work, automobile pist...

OBJECTIVES To examine the relationship between perceived and biological stress and near misses among Emergency Medicine residents. DESIGN Self-rated stress and stress biomarkers were assessed in residents in Emergency Medicine before and after a day shift. The supervising physicians and residents reported numbers of near misses. SETTING The study took place in the Emergency Department of a ...

A survey of asymptomatic children in Uganda showed Plasmodium malariae and P. falciparum parasites in 45% and 55% of microscopy-positive samples, respectively. Although 36% of microscopy-positive samples were negative by rapid diagnostic test, 75% showed P. malariae or P. ovale parasites by PCR, indicating that routine diagnostic testing misses many non-P. falciparum malarial infections.

Within the last few years, CPU speed has greatly overtaken memory speed. For this reason, implementation of symbolic algorithms— with their extensive use of pointers and hashing—must be reexamined. In this paper, we introduce the concept of cache miss complexity as an analytical tool for evaluating algorithms depending on pointer chasing. Such algorithms are typical of symbolic computation foun...