Results 1 to 10 of about 792,970 (170)

Density Steering by Power Moments

open access: yesIFAC-PapersOnLine, 2023
This paper considers the problem of steering an arbitrary initial probability density function to an arbitrary terminal one, where the system dynamics is governed by a first-order linear stochastic difference equation. It is a generalization of the conventional stochastic control problem where the uncertainty of the system state is usually ...
Guangyu Wu, Anders Lindquist
openaire   +2 more sources

Higher Power Density Amplifiers [PDF]

open access: yesJournal of the Audio Engineering Society, 2018
This paper proposes a new switching strategy for switch-mode power audio amplifiers beneficial for the power dissipation in the switching devices of the power stage. The strategy is based on a thorough analysis of the loss mechanism and operating conditions of the power stage and how they relate to the audio input.
Iversen, Niels Elkjær   +3 more
openaire   +2 more sources

Compressive power spectral density estimation [PDF]

open access: yes2011 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2011
ISBN:978-1-457-70538 ...
Lexa, Michael A.   +3 more
openaire   +3 more sources

Towards high power density aqueous redox flow batteries

open access: yesNano Research Energy, 2023
With the increasing penetration of renewable energy sources in the past decades, stationary energy storage technologies are critically desired for storing electricity generated by non-dispatchable energy sources to mitigate its impact on power grids ...
Mengqi Gao   +3 more
doaj   +1 more source

Investigation of EMF Exposure Level for Uplink and Downlink of 5G Network Using Ray Tracing Approach

open access: yesInternational Journal of Technology, 2022
To provide enhanced mobile services, the 5G system is expected to further densify its network infrastructure and scale up the deployment of massive antenna arrays that emit high-energy beams using the millimeter wave spectrum.
Mohammed Ahmed Salem   +6 more
doaj   +1 more source

From Laboratory to Real-World Application: A Comprehensive Study on Battery State of Health Assessment Methods

open access: yesEnergies
Accurate state of health (SOH) assessment is the cornerstone for ensuring the safety, reliability, and lifecycle value prediction of electric vehicles. While extensive research has demonstrated the significant advantages of data-driven approaches in SOH ...
Chunxiao Ma   +5 more
doaj   +1 more source

Tetramethylene Sulfone (TMS) as an Electrolyte Additive for High-Power Lithium-Ion Batteries

open access: yesBatteries
High-power lithium-ion batteries impose stringent requirements on output power. Tetramethylene sulfone (TMS), serving as a novel electrolyte additive, effectively enhances the stability of electrolytes under high-voltage conditions due to its high flash ...
Wenting Liu   +8 more
doaj   +1 more source

The effect of increasing the multiplicity of flow fields contact surface on the performance of PEM fuel cell [PDF]

open access: yesHydrogen, Fuel Cell & Energy Storage, 2017
In this paper, three innovative 3-D geometries for flow fields of cathode and anode have been developed to investigate the comparative impact of increasing the multiplicity of the involved anode-cathode channel surface contact on the efficiency of ...
Farzin Ramin   +2 more
doaj   +1 more source

Power languages and density

open access: yesDiscrete Applied Mathematics, 1991
A preorder on languages is defined by using alphabetical morphisms. An interval in this preorder is called dense if each subinterval contains an inner point. The author studies the existence of maximal dense intervals, together with decidability questions in the context-free case.
openaire   +1 more source

Vacancy Chemistry Regulated Cobalt Oxide Nanostructures with Fast Kinetics for High-Performance Lithium-Ion Capacitors

open access: yesEnergy Material Advances
As a promising transition metal oxide, Co3O4 is considered a low-cost anode material in lithium-ion capacitors (LICs) due to its sizeable theoretical capacity and excellent electrochemical reversibility.
Yanyan Kong   +11 more
doaj   +1 more source

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