Results 71 to 80 of about 3,143,983 (204)

Low-frequency local field potentials and spikes in primary visual cortex convey independent visual information [PDF]

open access: yes, 2008
Local field potentials (LFPs) reflect subthreshold integrative processes that complement spike train measures. However, little is yet known about the differences between how LFPs and spikes encode rich naturalistic sensory stimuli.
Belitski, A.   +6 more
core   +2 more sources

Improving primary frequency response in networked microgrid operations using multilayer perceptron-driven reinforcement learning

open access: yesIET Smart Grid, 2020
Individual microgrids can improve the reliability of power systems during extreme events, and networked microgrids can further improve efficiency through resource sharing and increase the resilience of critical end-use loads. However, networked microgrid
Nikitha Radhakrishnan   +8 more
doaj   +1 more source

Modified p-modes in penumbral filaments?

open access: yes, 2007
Aims: The primary objective of this study is to search for and identify wave modes within a sunspot penumbra. Methods: Infrared spectropolarimetric time series data are inverted using a model comprising two atmospheric components in each spatial pixel.
A. Lagg   +34 more
core   +1 more source

Assessing the Risk of 100-year Freshwater Floods in the Lamprey River Watershed of New Hampshire Resulting from Changes in Climate and Land Use [PDF]

open access: yes, 2013
What is the coastal resource issue the project sought to address? Both the magnitude and frequency of freshwater flooding is on the rise in seacoast NH and around much of New England.
Miller, Steve   +8 more
core   +6 more sources

Transient Frequency Modeling and Characteristic Analysis of Virtual Synchronous Generator

open access: yesEnergies
The large-scale integration of renewable energy into power systems significantly alters their operational characteristics, reducing system inertia and posing challenges to transient frequency stability.
Zhou Su, Guoqing Yang, Lixiao Yao
doaj   +1 more source

Day-Ahead Scheduling Considering Demand Response as a Frequency Control Resource

open access: yesEnergies, 2017
The development of advanced metering technologies makes demand response (DR) able to provide fast response services, e.g., primary frequency control. It is recognized that DR can contribute to the primary frequency control like thermal generators.
Yu-Qing Bao   +4 more
doaj   +1 more source

Senescent trees stabilize aboveground wood net primary production immediately after disturbance [PDF]

open access: yes, 2020
In the United States, forests sequester 17% of national carbon (C) emissions annually (UGCRP, 2018), however shifting forest disturbances threaten the stability of this essential C sink.
Grigri, Maxim S
core   +2 more sources

MTDC systems for frequency support base on DC voltage manipulation [PDF]

open access: yes, 2015
This paper presents control strategies for multi-terminal HVDC systems to provide primary frequency support to connected AC networks via coordinated DC voltage manipulation.
Rafferty, J., Wang, Y., Xu, G., Xu, L.
core   +1 more source

Fast frequency response of inverter-based resources and its impact on system frequency characteristics

open access: yesGlobal Energy Interconnection, 2020
The inertia response and primary frequency regulation capability of synchronous grids are declining owing to the increasing penetration of inverter-based resources.
Lining Su   +5 more
doaj   +1 more source

Continuously Tunable Flat-Passband Microwave Photonic Notch Filter Based on Primary and Secondary Tap Distribution Impulse Response [PDF]

open access: yes, 2015
:A new microwave photonic signal processor that has the ability to realize a continuously tunable high-resolution notch filter response is presented. It is based on designing the filter impulse response to have a primary and secondary tap distribution ...
Chan, Erwin H. W.   +4 more
core   +1 more source

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