Results 91 to 100 of about 234,218 (345)

Electron Acceleration and Time Variability of High Energy Emission from Blazars

, 2000
Blazars are known to emit a broad band emission from radio to gamma-rays with rapid time variations, particularly, in X- and gamma-rays. Synchrotron radiation and inverse Compton scattering are thought to play an important role in emission and the time ...
Coppi P. S., Crusius A., Fumio Takahara, Hui Li, Kirk J. G., Masaaki Kusunose, Mastichiadis A., Mastichiadis A., Robinson P. A.   +8 more
core   +1 more source

Accelerating Smooth Games by Manipulating Spectral Shapes

, 2020
We use matrix iteration theory to characterize acceleration in smooth games. We define the spectral shape of a family of games as the set containing all eigenvalues of the Jacobians of standard gradient dynamics in the family. Shapes restricted to the real line represent well-understood classes of problems, like minimization.
Azizian, Waïss, Scieur, Damien, Mitliagkas, Ioannis, Lacoste-Julien, Simon, Gidel, Gauthier   +4 more
openaire   +2 more sources

Incorporation of a spectral model in a convolutional neural network for accelerated spectral fitting [PDF]

Magnetic Resonance in Medicine, 2019
PurposeMRSI has shown great promise in the detection and monitoring of neurologic pathologies such as tumor. A necessary component of data processing includes the quantitation of each metabolite, typically done through fitting a model of the spectrum to the data.
Saumya S. Gurbani, Sulaiman Sheriff, Andrew A. Maudsley, Hyunsuk Shim, Lee A.D. Cooper   +4 more
openaire   +2 more sources

Visual Recovery Reflects Cortical MeCP2 Sensitivity in Rett Syndrome

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Rett syndrome (RTT) is a devastating neurodevelopmental disorder with developmental regression affecting motor, sensory, and cognitive functions. Sensory disruptions contribute to the complex behavioral and cognitive difficulties and represent an important target for therapeutic interventions.
Alex Joseph Simon, Nathalie Picard, Valeria d'Andrea, Enchi Chang, Joseph Leffler, Eleonora Centofante, Matthew Taylor, Francesca Bardi, Francesca Cavicchiolo, Takao K. Hensch, Stefano Panzeri, Chinfei Chen, Michela Fagiolini   +12 more
wiley   +1 more source

CSF Levels of NPTX2 Are Associated With Less Brain Atrophy Over Time in Cognitively Unimpaired Individuals

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Introduction Neuronal pentraxin 2 (NPTX2) is a synaptic protein involved in synaptic plasticity and regulation of neuronal excitability. Lower baseline cerebrospinal fluid (CSF) NPTX2 levels have been shown to be associated with an earlier onset of mild cognitive impairment (MCI), a pre‐dementia syndrome, even after CSF Alzheimer's Disease (AD)
Juan P. Vazquez, Corinne Pettigrew, Yuxin Zhu, Claire Anderson, Guray Erus, Christos Davatzikos, Michael Miller, Abhay Moghekar, Sungtaek Oh, Chan‐Hyun Na, Marilyn Albert, Paul Worley, Anja Soldan   +12 more
wiley   +1 more source

CUDA-based parallel acceleration algorithm for wavelet denoising of airborne γ-ray spectrometry data

He jishu
BackgroundThe volume of aviation gamma spectrum data is immense. If only a central processing unit (CPU) is used for data post-processing, it would be constrained by computational efficiency.PurposeThis study aims to propose a CUDA-based graphics ...
XIONG Chao, WANG Xin, WANG Xinjie, WU Hexi   +3 more
doaj   +1 more source

The evaluation of strengthening effect reinforced concrete structures with FRP on seismic dynamic performance of the structures [PDF]

Journal of Structural and Construction Engineering, 2019
Nowadays, Strengthening of existing structures was conducted by FRP wrapping in Iran in order to increase capacity and ductility particularly for columns resulting in an increase in the strength of concrete and improve structure behaviour. In this study,
Mohammad Kazem Sharbatdar, Hakime Parsa
doaj   +1 more source

Particle acceleration in ultra-relativistic oblique shock waves

, 2002
We perform Monte Carlo simulations of diffusive shock acceleration at highly relativistic oblique shock waves. High upstream flow Lorentz gamma factors are used, which are relevant to models of ultra relativistic particle shock acceleration in Active ...
A. Meli, Achterberg, Bednarz, Bednarz, Begelman, Bell, Bell, Blandford, Chakrabarti, de Hoffmann, Drury, Ellison, Gallant, Gallant, Greisen, Hoshino, Hudson, J.J. Quenby, Jokipii, Jokipii, Jokipii, Kirk, Kirk, Kirk, Kirk, Krymsky, Lieu, Lieu, Lucek, Mastichiadis, Moussas, Ostrowski, Peacock, Protheroe, Protheroe, Quenby, Vietri, Vietri, Waxman, Zatsepin   +39 more
core   +1 more source

Accelerating spectral clustering on quantum and analog platforms

Academia Quantum
We introduce a novel hybrid quantum–analog algorithm to perform a graph clustering that exploits connections between the evolution of dynamical systems on graphs and the underlying graph spectra. This approach constitutes a new class of algorithms that combine emerging quantum and analog platforms to accelerate computations.
Xu, Xingzi, Sahai, Tuhin
openaire   +2 more sources

Impact of APOE ε4 Genotype Load on Cognitive Function and Lipid Metabolism in Patients With Cerebral Small Vessel Disease

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Apolipoprotein ε4 (APOE ε4) is a potent genetic risk factor for Alzheimer's disease (AD). However, its role in cerebral small vessel disease (CSVD) remains unclear. Given the clinical and pathological similarities between CSVD and AD, this study aimed to investigate the associations of APOE ε4 gene dosage with cognitive function and
Tingru Jin, Haocheng Yang, Feng Liu, Sihao Lin, Junru Hu, Jian Wang, Yulan Gou   +6 more
wiley   +1 more source