Showing papers on "Sleep (system call) published in 1988"
Journal Article•
TL;DR: The results give reason for serious concerns and for the conclusion to strongly recommend more extensive studies on this route, and effects associated with irregular duty and sleep patterns intensified desynchronization.
Abstract: This study was planned and performed as a first step to assess sleep behaviour and circadian rhythmicity in aircrews operating on regular passenger flights between Germany and Japan via Anchorage, AK. Sleep patterns as well as continuous recordings of ECG and temperature were obtained from a B747 captain during a period of 13 d, including a preceding control day, 8 d on duty and 4 d at home base after return. Sleep behaviour and circadian rhythms changed dramatically due to adverse effects from the duty roster on the polar route. Sleep periods became fragmented into several sleep periods per day in a very irregular manner. Total sleep duration was shortened and sleep deficits occurred between flights. After return to the home base, sleep distribution remained divided into two intervals per day. The circadian system was considerably disrupted on route. Effects associated with irregular duty and sleep patterns intensified desynchronization. Readjustment was extremely slow resulting in a phase-displacement of at least 10 h even after being home for 4 d. Altogether, the results give reason for serious concerns and for the conclusion to strongly recommend more extensive studies on this route.
9 citations
Patent•
29 Feb 1988
TL;DR: In this article, the authors propose to turn off the power source of a memory and to reduce the power consumption by storing a program which turns off power source and a sleep program in the random access memory in a processor before a sleep state is entered, and executing them.
Abstract: PURPOSE:To turn off the power source of a memory and to reduce the power consumption by storing a program which turns off the power source and a sleep program in the random-access memory in a processor before a sleep state is entered, and executing them. CONSTITUTION:The processor 1 normally reads a program out of an external memory 3 by instruction unit, and executes it successively. When the sleep mode is entered, the processor 1 controls a power source control circuit 4 to read the program for stopping the electric supply to the external memory 3 and the program containing a sleep instruction out of the external memory 3, and then stores them in the random-access memory 2 and also executes them. The electric supply to the external memory 3 is stopped first by the execution and then the processor 1 enters the sleep state. Consequently, the power consumption is reduced.
5 citations