Results 71 to 80 of about 1,840,269 (280)

Spectral Hardening of Large Solar Flares

, 2008
RHESSI observations are used to quantitatively study the hard X-ray evolution in 5 large solar flares selected for spectral hardening in the course of the event.
A. O. Benz, Massaro E., P. C. Grigis
core   +1 more source

Cosmic-ray Acceleration at Ultrarelativistic Shock Waves: Effects of a "Realistic" Magnetic Field Structure

, 2005
First-order Fermi acceleration processes at ultrarelativistic shocks are studied with Monte Carlo simulations. The accelerated particle spectra are derived by integrating the exact particle trajectories in a turbulent magnetic field near the shock ...
Ballard K. R., Bednarz J., Heavens A., Jacek Niemiec, Kirk J. G., Michalek G., Michał Ostrowski, Naito T., Ostrowski M., Ostrowski M.   +9 more
core   +1 more source

Probabilistic Seismic Hazard Assessment of the Southwestern Region of Saudi Arabia

Applied Sciences
In relation to its rapid infrastructure expansion, exemplified by projects like the Najran Valley Dam or the rehabilitation of agricultural terraces, Saudi Arabia stands out among the Arabian Gulf nations.
Mohamed Arfa, Hamdy A. Awad, Hassan Abbas, José A. Peláez, Rashad Sawires   +4 more
doaj   +1 more source

On the Spatial Distribution of Hard X-Rays from Solar Flare Loops

, 1999
The aim of this paper is to investigate the spatial structure of the impulsive phase hard X-ray emission from solar flares. This work is motivated by the YOHKOH and the forthcoming HESSI observations.
Fletcher L., Fletcher L., Holman G., Miller J. A., Timothy Q. Donaghy, Vahe Petrosian, Wheatland M. S.   +6 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

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

Self acceleration from spectral geometry in dissipative quantum-walk dynamics

Nature Communications
The dynamic behavior of a physical system often originates from its spectral properties. In open systems, where the effective non-Hermitian description enables a wealth of spectral structures in the complex plane, the concomitant dynamics are ...
Peng Xue, Quan Lin, Kunkun Wang, Lei Xiao, Stefano Longhi, Wei Yi   +5 more
doaj   +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

Building evaluation using two components of acceleration time histories causes by shallow crustal fault earthquakes with maximum magnitude 7 Mw

MATEC Web of Conferences, 2018
Spectral acceleration and acceleration time histories are the two seismic loads generally used for dynamic analysis of a building. The structural design of buildings is implemented using spectral acceleration at the ground surface obtained from the ...
Partono Windu, Irsyam Masyhur, Dwi Atmanto Indrastono, Retno Ari Setiaji Andi, Purnomo Sigit, Yanuar Setiawan Robby   +5 more
doaj   +1 more source

A Model for Nonthermal Particle Acceleration in Relativistic Magnetic Reconnection

The Astrophysical Journal Letters, 2023
The past decade has seen an outstanding development of nonthermal particle acceleration in magnetic reconnection in magnetically dominated systems, with clear signatures of power-law energy distributions as a common outcome of first-principles kinetic ...
Xiaocan Li, Fan Guo, Yi-Hsin Liu, Hui Li
doaj   +1 more source