نتایج جستجو برای: wake region

تعداد نتایج: 557905  

Journal: :Technology and health care : official journal of the European Society for Engineering and Medicine 2017
Jennifer A Williams Diane J Cook

BACKGROUND The goal of this research is to use smart home technology to assist people who are recovering from injuries or coping with disabilities to live independently. OBJECTIVE We introduce an algorithm to model and forecast wake and sleep behaviors that are exhibited by the participant. Furthermore, we propose that sleep behavior is impacted by and can be modeled from wake behavior, and v...

Journal: :Brain research 1992
T Kodama Y Y Lai J M Siegel

Previous studies in our laboratory have found that muscle atonia could be triggered by two distinct areas of the medial medulla, a caudal region, corresponding to the nucleus paramedianus (NPM) and a rostral region, corresponding to the nucleus magnocellularis (NMC). The former region is responsive to acetylcholine (ACh) and the latter region is responsive to glutamate. In this study we have me...

2011
ANDRE S. CHAN PETER A. DEWEY ANTONY JAMESON CHUNLEI LIANG ALEXANDER J. SMITS A. J. Smits

The flow over a pair of counter-rotating cylinders is investigated numerically and experimentally. It is demonstrated that it is possible to suppress unsteady vortex shedding for gap sizes from one to five cylinder diameters, at Reynolds numbers from 100 to 200, expanding on the more limited work by Chan & Jameson (Intl J. Numer. Meth. Fluids, vol. 63, 2010, p. 22). The degree of unsteady wake ...

Journal: :The Journal of neuroscience : the official journal of the Society for Neuroscience 2014
Rhannan H Williams Melissa J S Chee Daniel Kroeger Loris L Ferrari Eleftheria Maratos-Flier Thomas E Scammell Elda Arrigoni

Histaminergic neurons in the tuberomammillary nucleus (TMN) are an important component of the ascending arousal system and may form part of a "flip-flop switch" hypothesized to regulate sleep and wakefulness. Anatomical studies have shown that the wake-active TMN and sleep-active ventrolateral preoptic nucleus (VLPO) are reciprocally connected, suggesting that each region can inhibit its counte...

Journal: :Current Biology 2007
Antoine U. Viola Simon N. Archer Lynette M. James John A. Groeger June C.Y. Lo Debra J. Skene Malcolm von Schantz Derk-Jan Dijk

Circadian rhythmicity and sleep homeostasis interact to regulate sleep-wake cycles [1-4], but the genetic basis of individual differences in sleep-wake regulation remains largely unknown [5]. PERIOD genes are thought to contribute to individual differences in sleep timing by affecting circadian rhythmicity [6], but not sleep homeostasis [7, 8]. We quantified the contribution of a variable-numbe...

1999
ROBERTO CELI Colin Theodore Roberto Celi

This paper presents a study on the effect of wake modeling on the prediction of the off-axis response to pilot inputs for a hingeless and an articulated rotor helicopter, including a comparison with flight test data. The free wake model can capture geometry changes due to maneuvering flight. The prediction of the response to pilot inputs improves only slightly; in particular, the off-axis respo...

Journal: :Philosophical transactions. Series A, Mathematical, physical, and engineering sciences 2015
Jens N Sørensen Robert F Mikkelsen Dan S Henningson Stefan Ivanell Sasan Sarmast Søren J Andersen

The actuator line technique was introduced as a numerical tool to be employed in combination with large eddy simulations to enable the study of wakes and wake interaction in wind farms. The technique is today largely used for studying basic features of wakes as well as for making performance predictions of wind farms. In this paper, we give a short introduction to the wake problem and the actua...

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