Results 21 to 30 of about 146,548 (261)

Investigation of Chaboche and Bouc–Wen Parameters of Quenched and Tempered Steel and Comparison of Model Predictive Capabilities

Applied Sciences, 2023
The aim of this paper is to model the elastic–plastic uniaxial behaviour of a quenched and tempered steel. The common Chaboche isotropic kinematic hardening model (CIKH) is introduced, and a physics-based procedure is proposed to determine its parameters.
Ciro Santus, Lorenzo Romanelli, Tommaso Grossi, Leonardo Bertini, Paolo Neri, Luca Le Bone, Francesco Chiesi, Leonardo Tognarelli   +7 more
doaj   +1 more source

Precalculated arrays-based algorithms for the calculation of the Riemann zeta-function

Vilnius University Open Series, 2022
In this paper, we continue the study of efficient algorithms for the computation of the Riemann zeta function on the complex plane. We introduce two precalculated arrays-based modifications of MB-method.
Lukas Kuzma, Igoris Belovas, Martynas Sabaliauskas   +2 more
doaj   +1 more source

Ultimate complexity for numerical algorithms [PDF]

ACM Communications in Computer Algebra, 2020
Most numerical algorithms are designed for single or double precision floating point arithmetic, and their complexity is measured in terms of the total number of floating point operations. The resolution of problems with high condition numbers (e.g. when approaching a singularity or degeneracy) may require higher working precisions, in which case it is
Joris van der Hoeven, Grégoire Lecerf
openaire   +2 more sources

DECISION MAKING MODELS AND ALGORITHMS IN SITUATIONS OF UNCERTAINTY [PDF]

Economica, 2019
This study describes three decision making models for uncertain situations, when the decision maker has infinity of alternatives, the activity is determined by uncontrollable factors, and the number of states of nature is ...
Lilian GOLBAN, Anatol GODONOAGĂ
doaj  

FOCUS: fast Monte Carlo approach to coherence of undulator sources

Journal of Synchrotron Radiation, 2023
FOCUS (Fast Monte CarlO approach to Coherence of Undulator Sources) is a new GPU-based simulation code to compute the transverse coherence of undulator radiation from ultra-relativistic electrons.
M. Siano, G. Geloni, B. Paroli, D. Butti, T. Lefèvre, S. Mazzoni, G. Trad, U. Iriso, A. A. Nosych, L. Torino, M. A. C. Potenza   +10 more
doaj   +1 more source

Efficient neural network training method for unsteady flow field prediction based on data pool

Engineering Applications of Computational Fluid Mechanics
In recent years, neural network technology has made significant progress in the field of unsteady flow field prediction, leading to the development of many innovative methods.
Qiuchi Min, Tianyu Li, Guanxiong Li, Shuyuan Liu, Laiping Zhang, Xiaogang Deng   +5 more
doaj   +1 more source

Algorithm to Estimate the Capacity Reserve of Existing Masonry Arch Railway Bridges

Applied Sciences, 2022
Most railway masonry arch bridges were designed according to codes that predate the 1950s; therefore, assessing their load-carrying capacity to comply with current codes is of the utmost importance.
Francesca Brighenti, Luca Possidente, Daniele Zonta   +2 more
doaj   +1 more source

Multi-fidelity learning for atomistic models via trainable data embeddings

Machine Learning: Science and Technology
We present an approach for end-to-end training of machine learning models for structure-property modeling on collections of datasets derived using different density functional theory functionals and basis sets. This approach overcomes the problem of data
Rick Oerder, Gerrit Schmieden, Jan Hamaekers   +2 more
doaj   +1 more source

Simulations of Energy Losses in the Bulk Nuclear Medium Using Hydrodynamics on the Graphics Cards (GPU)

Proceedings, 2019
We are developing a software for energy loss simulation which is affected by jets in the nuclear matter described by relativistic hydrodynamics. Our program uses a Cartesian coordinate system in order to provide high spatial resolution for the analysis ...
Marcin Słodkowski, Patryk Gawryszewski, Patryk Marcinkowski, Dominik Setniewski, Joanna Porter-Sobieraj   +4 more
doaj   +1 more source

Series with Binomial-like Coefficients for the Investigation of Fractal Structures Associated with the Riemann Zeta Function

Fractal and Fractional, 2022
The paper continues the study of efficient algorithms for the computation of zeta functions over the complex plane. We aim to apply the modifications of algorithms to the investigation of underlying fractal structures associated with the Riemann zeta ...
Igoris Belovas, Martynas Sabaliauskas, Lukas Kuzma   +2 more
doaj   +1 more source