Results 31 to 40 of about 322,272 (160)

A Modified Three-Term Conjugate Descent Derivative-Free Method for Constrained Nonlinear Monotone Equations and Signal Reconstruction Problems

Mathematics
Iterative methods for solving constraint nonlinear monotone equations have been developed and improved by many researchers. The aim of this research is to present a modified three-term conjugate descent (TTCD) derivative-free method for constrained ...
Aliyu Yusuf, Nibron Haggai Manjak, Maggie Aphane   +2 more
doaj   +1 more source

Observation of a Metallic Superfluid in a Numerical Experiment [PDF]

Physical Review Letters, 2005
We report the observation, in Monte Carlo simulations, of a novel type of quantum ordered state: {\it the metallic superfluid}. The metallic superfluid features ohmic resistance to counter-flows of protons and electrons, while featuring dissipationless co-flows of electrons and protons.
Smorgrav, E., Smiseth, J., Babaev, Egor, Sudbo, A.   +3 more
openaire   +3 more sources

Integrating Proper Orthogonal Decomposition with the Crank–Nicolson Finite Element Method for Efficient Solutions of the Schrödinger Equation

Axioms
This study proposes a dimensionality reduction method based on proper orthogonal decomposition (POD) for numerically solving the Schrödinger equation by optimizing the coefficient vectors of the Crank–Nicolson finite element (CNFE) solution.
Xiaohui Chang, Hong Li, Jiahua Wang, Xuehui Ren   +3 more
doaj   +1 more source

Evolution Mechanisms of an Artificial Calco-Magnesian Agglomerate in Seawater: Analysis of Powder by Experiments and Numerical Modeling

Coasts
The aim of this work was to investigate the evolutionary mechanisms of an artificial sedimentary agglomerate formed by cathodic polarization in natural seawater during its abandonment to a natural environment.
Louis Zadi, Anthony Soive, Philippe Turcry, Alaric Zanibellato, Pierre-Yves Mahieux, René Sabot, Marc Jeannin   +6 more
doaj   +1 more source

Simulation of reactor transients in vver-1000 for pretraining of operating personnel

Известия высших учебных заведений: Проблемы энергетики, 2017
The pretraining system for NPP operating personnel in WWER-1000 is proposed. The basis of this system is computer simulation of reactor transients. The software packages and procedural guides for mathematical simulation of nuclear reactor kinetics are ...
M. A. Volman
doaj   +1 more source

Mathematical Modeling of the Phytoplankton Populations Geographic Dynamics for Possible Scenarios of Changes in the Azov Sea Hydrological Regime

Mathematics, 2021
Increased influence of abiotic and anthropogenic factors on the ecological state of coastal systems leads to uncontrollable changes in the overall ecosystem.
Alexander Sukhinov, Yulia Belova, Alexander Chistyakov, Alexey Beskopylny, Besarion Meskhi   +4 more
doaj   +1 more source

Image Restoration via the Integration of Optimal Control Techniques and the Hamilton–Jacobi–Bellman Equation

Mathematics
In this paper, we propose a novel image restoration framework that integrates optimal control techniques with the Hamilton–Jacobi–Bellman (HJB) equation.
Dragos-Patru Covei
doaj   +1 more source

Influence of incubation delays on COVID-19 transmission in diabetic and non-diabetic populations – an endemic prevalence case

Computational and Mathematical Biophysics, 2023
The study of dynamics of diabetic population infected by COVID-19 is of pressing concern as people with diabetes are considered to be at higher risk of severe illness from COVID-19.
Anand Monalisa, Danumjaya Palla, Rao Ponnada Raja Sekhara   +2 more
doaj   +1 more source

Towards the Optimal Design of Numerical Experiments [PDF]

IEEE Transactions on Neural Networks, 2008
This paper addresses the problem of the optimal design of numerical experiments for the construction of nonlinear surrogate models. We describe a new method, called learner disagreement from experiment resampling (LDR), which borrows ideas from active learning and from resampling methods: the analysis of the divergence of the predictions provided by a ...
Gazut, Stéphane, Martinez, Jean-Marc, Dreyfus, Gerard, Oussar, Yacine   +3 more
openaire   +3 more sources

The heating rate influence on the dynamics of sample destruction [PDF]

E3S Web of Conferences
We consider a mathematical model of the dynamics of the initial stage of destruction of a homogeneous sample under the influence of heating. For the mathematical description of the process we apply recently proposed mathematical model of a non ...
Vasil'eva Olga Alexandrovna, Hohonov Alexander Alekseevich   +1 more
doaj   +1 more source