Results 11 to 20 of about 679,441 (311)
International Journal of Adaptive Control and Signal Processing, EarlyView., 2023 Summary In this contribution, we propose a detailed study of interpolation‐based data‐driven methods that are of relevance in the model reduction and also in the systems and control communities. The data are given by samples of the transfer function of the underlying (unknown) model, that is, we analyze frequency‐response data.
Quirin Aumann, Ion Victor Gosea
wiley +1 more source
Creep Characterization of Inconel 718 Lattice Metamaterials Manufactured by Laser Powder Bed Fusion
Advanced Engineering Materials, EarlyView., 2023 Herein, the creep characteristics of additively manufactured Inconel 718 metamaterials are investigated. The creep behavior of metamaterials and the effects of microstructural defects are assessed, and the microstructure defects are accurately captured using Kachanov's creep damage model.
Akash Singh Bhuwal +5 more
wiley +1 more source
Universal electromagnetic fields [PDF]
Classical and Quantum Gravity, 2018 We study universal electromagnetic (test) fields, i.e., p-forms fields F that solve simultaneously (virtually) any generalized electrodynamics (containing arbitrary powers and derivatives of F in the field equations) in n spacetime dimensions. One of the main results is a sufficient condition: any null F that solves Maxwell's equations in a Kundt ...
Vojtěch Pravda +3 more
openaire +5 more sources
Applied Sciences, 2023 The performance of low-voltage circuit breaker overload protection degrades slowly during service, and the service state cannot be simply described as a normal state or a fault state.
Kui Li, Xianfeng Peng, Bokai Hu
doaj +1 more source
Transmitters for Combined Radio Over a Fiber and Outdoor Millimeter-Wave System at 25 GHz
IEEE Photonics Journal, 2020 In the modern wireless networks, millimeter-wave radio-frequency (RF) bands are becoming more attractive as they provide larger bandwidth and higher data rates than the today-used systems operating at frequencies below 6 GHz.
Jan Bohata +4 more
doaj +1 more source
On rational electromagnetic fields [PDF]
Physics Letters A, 2020 We employ a recently developed method for constructing rational electromagnetic field configurations in Minkowski space to investigate several properties of these source-free finite-action Maxwell ("knot") solutions. The construction takes place on the Penrose diagram but uses features of de Sitter space, in particular its isometry group. This admits a
Kaushlendra Kumar, Olaf Lechtenfeld
openaire +3 more sources
Computation of Electromagnetic Field and Complex Materials Interaction [PDF]
, 2018 We develop a method to calculate the electromagnetic field distribution in complex materials. The system contains multiple phases with different electrical and magnetic properties and also contains multiple components which can diffuse around to affect ...
Qin, Rongshan
core +1 more source
Electromagnetic field near cosmic string [PDF]
, 2006 The retarded Green function of the electromagnetic field in spacetime of a straight thin cosmic string is found. It splits into a geodesic part (corresponding to the propagation along null rays) and to the field scattered on the string.
A. Vilenkin +5 more
core +2 more sources
Constraints of Using Conductive Screen-Printing for Chipless RFID Tags with Enhanced RCS Response
Applied Sciences, 2022 The analysis and experimental verification of the properties of four types of chipless RFID tags with an increased RCS response level designed and fabricated by conductive screen-printing using silver paste on foil and paper substrates was performed. The
Milan Svanda, Jan Machac, Milan Polivka
doaj +1 more source
Sleep EEG-Based Approach to Detect Mild Cognitive Impairment
Frontiers in Aging Neuroscience, 2022 Mild Cognitive Impairment (MCI) is an early stage of dementia, which may lead to Alzheimer’s disease (AD) in older adults. Therefore, early detection of MCI and implementation of treatment and intervention can effectively slow down or even inhibit the ...
Duyan Geng +6 more
doaj +1 more source