Results 51 to 60 of about 1,521,192 (154)

Fast control technique for high frequency (5MHz) DC/DC integrated converter [PDF]

open access: yes, 2010
A switching frequency of 5 MHz allows the integration in a chip of a low power (10W) DC/DC converter. Although this switching frequency would make feasible a voltage mode control with 1MHz bandwidth, the parasitics and robustness don't allow such a high ...
Alou Cervera, Pedro   +4 more
core  

Suppression of chaos at slow variables by rapidly mixing fast dynamics through linear energy-preserving coupling

open access: yes, 2011
Chaotic multiscale dynamical systems are common in many areas of science, one of the examples being the interaction of the low-frequency dynamics in the atmosphere with the fast turbulent weather dynamics.
Abramov, Rafail V.
core   +2 more sources

Female remating in Drosophila ananassae: bidirectional selection for remating speed [PDF]

open access: yes, 2001
In Drosophila ananassae, artificial selection was carried out for fast and slow remating speed for 10 generations. Response to selection resulted in rapid divergence in remating time in each of two replicates of both fast and slow lines.
Singh, Shree Ram
core  

The Omega Counter, a Frequency Counter Based on the Linear Regression

open access: yes, 2015
This article introduces the {\Omega} counter, a frequency counter -- or a frequency-to-digital converter, in a different jargon -- based on the Linear Regression (LR) algorithm on time stamps. We discuss the noise of the electronics.
Bourgeois, P. -Y.   +3 more
core   +3 more sources

Magnetic incommensurability in $p$-type cuprate perovskites

open access: yes, 2011
For the superconducting phase with a d-wave order parameter and zero temperature the magnetic susceptibility of the t-J model is calculated using the Mori projection operator technique. Conditions for the appearance of an incommensurate magnetic response
A. SHERMAN   +3 more
core   +1 more source

Optimal Scheduling of an Isolated Wind-Diesel-Energy Storage System Considering Fast Frequency Response and Forecast Error

open access: yesEnergies, 2019
Nowadays, the hybrid wind–diesel system is widely used on small islands. However, the operation of these systems faces a major challenge in frequency control due to their small inertia.
Nhung Nguyen Hong, Yosuke Nakanishi
doaj   +1 more source

Development of a Fast Response Pressure Probe for Use in a Cavitation Tunnel [PDF]

open access: yes, 2004
The performance of a prototype fast response probe designed for use in a cavitation tunnel is investigated. The probe consists of a total head tube with an embedded miniature pressure sensor. Miniaturisation allows installation of the pressure transducer
Brandner, PA, Clarke, DB, Walker, GJ
core  

Smart integrated adaptive centralized controller for islanded microgrids under minimized load shedding [PDF]

open access: yes, 2017
In this paper, a smart integrated adaptive centralized controller is proposed for monitoring and controlling integrated renewable energy sources (RESs), both for intentional and unintentional islanding modes of operation for microgrids, as well as, for a
Azizipanah-Abarghooee, R.   +5 more
core   +1 more source

Fast Frequency Response Analysis and Efficient Test Device Design of New Energy Station

open access: yesZhongguo dianli
With the large-scale access of new energy to the power grid, the frequency response performance of the power station is becoming increasingly critical, and its rapid response capability has become an important support for ensuring the stability of the ...
Ruixiao ZHANG, Li LIANG, Dingmei WANG
doaj   +1 more source

Spatial frequency information modulates response inhibition and decision-making processes. [PDF]

open access: yesPLoS ONE, 2013
We interact with the world through the assessment of available, but sometimes imperfect, sensory information. However, little is known about how variance in the quality of sensory information affects the regulation of controlled actions.
Sara Jahfari   +2 more
doaj   +1 more source

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