نتایج جستجو برای: wake
تعداد نتایج: 21142 فیلتر نتایج به سال:
BACKGROUND This paper reports day-to-day data for from a one-week intervention phase, part of a 9-weeks randomised parallel study with patient having major depression (data from weekly visits have been reported). Wake therapy (sleep deprivation) has an established antidepressant effect with onset of action within hours. Deterioration on the following night's sleep is, however, common, and we us...
A Cherenkov wake confined by perfectly reflecting transverse walls is amplified if the dielectric medium is active. Because of the multiple-reflections process, the effective gain of the wake is enhanced compared to a ray propagating in a straight line. Higher enhancement occurs when the electron velocity is close to the Cherenkov velocity. This Cherenkov wake can then accelerate a second bunch...
The modified analytical form for the longitud inal and transverse resistive wake potentials of pointlike charge moving parallel to the axis of round pipe with frequency independent walls conductivity is obtained. The short range wake potentials are presented by uniformly converged series. For the frequency dependent conductivity, the resonator term of the longitudinal monopole wake potential is...
In this paper we demonstrate an accurate, efficient, and parallelizable optimization algorithm for the layout of hundreds, then 1000, turbines. It is modular and therefore allows different wake effect models to be incorporated. Its computational cost is a relation which depends upon how many candidate layouts it investigates and the complexity of its wake loss calculation. We demonstrate how we...
Wireless Sensor Network (WSN) consists of a large amount of low powered nodes which perform tasks like processing, radio transmission-reception, sensing and actuating. To minimize the power consumption in wireless sensor network a dedicated wake-up receiver is used within every sensor node. The wake-up receiver is an additional receiver, which continuously monitors the channel and wakes the res...
Nathaniel N. Ivers, NCC, is an Assistant Professor and Associate Chair of the Department of Counseling at Wake Forest University. José A. Villalba is a Professor and Associate Dean at Wake Forest University. Correspondence may be addressed to Nathaniel N. Ivers, Wake Forest University, Department of Counseling, P.O. Box 7406, Winston-Salem, NC 27109, [email protected]. Nathaniel N. Ivers, José A....
Abstract This paper describes a method for measuring the longitudinal wake potential of the Cornell Electron-Positron Storage Ring (CESR). The longitudinal wake potential was determined by measuring the time delay between successive bunches as a function of current. The slope of the wake potential was determined by the changes in the bunch length as a function of bunch current. A theoretical de...
Phillips-Chen-Robinson (PCR) model The PCR model itself combines two earlier models, one describing switching between sleep and wake states as a result of a drive consisting of homeostatic and circadian components3, and one describing the entrainment of the circadian system by light4. Specifically, sleep and wake states occur as a result of mutual inhibition between sleep promoting and wake pro...
Recently developed wake-up receivers pose a viable alternative for duty-cycling in wireless sensor networks. Here, a special radio signal can wake up close-by nodes. We model the wake-up range by the unit-disk graph. Such wake-up radio signals are very energy expensive and limited in range. Therefore, the number of signals must be minimized. So, we revisit the Connected Dominating Set (CDS) pro...
The vortex wake is the fluid dynamic footprint of swimming and flying animals. When an animal moves through fluid, Newton’s second and third laws together dictate that the locomotive force exerted by the fluid on the animal has a magnitude equal to the rate at which the animal imparts momentum to the fluid. Often the animal delivers this momentum in the form of rotating fluid masses called vort...
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