Evaluation of regularization factor and attenuation correction method of Q.Clear reconstruction for brain PET/MR in epileptic patients [PDF]
EJNMMI PhysicsPurpose To identify suitable regularization factor β and attenuation correction (AC) method for Q.Clear reconstruction in brain [18F]FDG PET/MR imaging of patients with epilepsy.
Xiaolong Niu +9 more
doaj +2 more sources
State-of-the-Art Literature Review of Power Flow Control Methods for Low-Voltage AC and AC-DC Microgrids [PDF]
Energies, 2023 The development of AC distribution systems provides for the seamless integration of low-voltage microgrids with distributed energy resources (DERs). This poses new challenges for the control of normal, emergency, and post-emergency states of microgrids ...
Pavel Ilyushin +3 more
doaj +2 more sources
Assessing the Quality of Prenatal Care: Use of the Kotelchuck Index Combined with Prenatal Care Data
Women, 2023 The aim of the present study was to propose a quality prenatal (PN) care assessment model combining use and visit content (both adjusted for the weeks of gestation) to estimate inadequate PN care and associated factors in Rio Branco, Acre.
Débora Melo de Aguiar +6 more
doaj +1 more source
Deep Unfolding of Chebyshev Accelerated Iterative Method for Massive MIMO Detection
IEEE Access, 2023 The zero-forcing (ZF) and minimum mean square error (MMSE) based detectors can approach optimal performance in the uplink of massive multiple-input multiple-output (MIMO) systems.
Salah Berra +3 more
doaj +1 more source
Methods to Determine the Current Efficiency in AC Electrolysis [PDF]
Arabian Journal for Science and Engineering, 2020 AbstractThe paper presents several methods (analytical, electromechanical and electronic) for determining the cathodic current efficiency of the metal deposition processes carried out by AC or pulse current. Based on the results of own experimental researches (for indium, cadmium, nickel, tin and zinc), the appropriate equations are given and the ...
S. Yu. Kireev +3 more
openaire +2 more sources
Generative adversarial network-based attenuation correction for 99mTc-TRODAT-1 brain SPECT
Frontiers in Medicine, 2023 BackgroundAttenuation correction (AC) is an important correction method to improve the quantification accuracy of dopamine transporter (DAT) single photon emission computed tomography (SPECT).
Yu Du +9 more
doaj +1 more source
Agronomy, 2022 Polyphenols with antioxidant compounds represent an important group of bioactive substances in apple production. The objectives of this study were firstly to measure four parameters of antioxidant capacity (AC) and polyphenol content (AC-FRAP (Ferric ...
Mihály Orosz-Tóth +6 more
doaj +1 more source
EMI modeling method of AC-AC power converters
IEICE Electronics Express, 2011 This paper presents a new model for simulation of Electromagnetic Interference (EMI) in power converters. Despite the fact that a Matrix Converter (MC) has been selected, such methodology can be applied to other converter topologies. The EMI model relies on a combination of time and frequency domain techniques in order to not only reduce the ...
Jordi Espina +3 more
openaire +1 more source
Traffic Management by Using Admission Control Methods in Multiple Node IMS Network
Advances in Electrical and Electronic Engineering, 2016 The paper deals with Admission Control methods (AC) as a possible solution for traffic management in IMS networks (IP Multimedia Subsystem) - from the point of view of an efficient redistribution of the available network resources and keeping the ...
Filip Chamraz, Ivan Baronak
doaj +1 more source
Bifurcation Stability Analysis of the Synchronverter in a Microgrid
Energies, 2022 Synchronized converters are being studied as a viable alternative to address the transition from synchronous generation to power-electronics-based generation systems.
Juan Segundo Ramírez +3 more
doaj +1 more source