As the disparity between processor and memory speed continues to widen the exploita tion of locality of reference in shared memory multiprocessors becomes an increasingly important problem in parallel processing In this paper we explore the problem of managing locality at the operating system level In speci c we study the use of reference counters in making informed deci sions about page placem...

People retell events for different reasons. Sometimes they try to be accurate, other times entertaining. What characterizes retellings from different perspectives? How does retelling perspective affect later recall of events? In the current research, participants retold a story either three times or not at all. By instruction, retellings were either entertaining or accurate. Compared to accurat...

Introduction: It has been shown that three new synthetic coumarins-3-carboxamides including 3-fluorobenzilchloride, 4-fluorobenzilchloride and 2-hidroxy-3 metoxybenzaldehyde, have acetylcholinesterase inhibitory activity. This study was performed to estimate ameliorating effect of these new coumarin-3-carboxamides on memory impairments induced by scopolamine (1 mg/kg, induced prolongation) in m...

Corticosteroids from the adrenal cortex influence a variety of behaviours including cognition, learning and memory. These hormones act via two intracellular receptors, the mineralo-corticoid receptor (MR) and the glucocorticoid receptor (GR). These two receptor types display a high concentration and distinct distribution in the hippocampus, a brain region which is directly involved in the regul...

Sleep fragmentation is a common symptom in sleep disorders and other medical complaints resulting in excessive daytime sleepiness. The present study seeks to explore the effects of sleep fragmentation on learning and memory in a spatial reference memory task and a spatial working memory (WM) task. Fischer/Brown Norway rats lived in custom treadmills designed to induce locomotor activity every 2...