Results 41 to 50 of about 1,171,815 (343)

From multifragmentation to supernovae and neutron stars [PDF]

, 2005
The thermodynamics properties of globally neutral dense stellar matter are analyzed both in terms of mean field instabilities and structures beyond the mean field. The mean field response to finite wavelenght fluctuations is calculated with the realistic
Chomaz, P., Ducoin, C., Gulminelli, F., Hasnaoui, K., Napolitani, P.   +4 more
core   +3 more sources

Frictionless Motion of Diffuse Interfaces by Sharp Phase-Field Modeling

Crystals, 2022
Diffuse interface descriptions offer many advantages for the modeling of microstructure evolution. However, the numerical representation of moving diffuse interfaces on discrete numerical grids involves spurious grid friction, which limits the overall ...
Michael Fleck, Felix Schleifer, Patrick Zimbrod   +2 more
doaj   +1 more source

A Nodal Immersed Finite Element-Finite Difference Method

SSRN Electronic Journal, 2022
The immersed finite element-finite difference (IFED) method is a computational approach to modeling interactions between a fluid and an immersed structure. This method uses a finite element (FE) method to approximate the stresses and forces on a structural mesh and a finite difference (FD) method to approximate the momentum of the entire fluid ...
David R. Wells, Ben Vadala-Roth, Jae H. Lee, Boyce E. Griffith   +3 more
openaire   +4 more sources

Leveraging Simplex Gradient Variance and Bias Reduction for Black-Box Optimization of Noisy and Costly Functions

IEEE Access
Gradient variance errors in gradient-based search methods are largely mitigated using momentum, however the bias gradient errors may fail the numerical search methods in reaching the true optimum.
Mircea-Bogdan Radac, Titus Nicolae
doaj   +1 more source

Numerical Analysis of Deformation Characteristics of Elastic Inhomogeneous Rotational Shells at Arbitrary Displacements and Rotation Angles

Computation, 2022
Adequate mathematical models and computational algorithms are developed in this study to investigate specific features of the deformation processes of elastic rotational shells at large displacements and arbitrary rotation angles of the normal line.
Vladimir G. Dmitriev, Alexander N. Danilin, Anastasiya R. Popova, Natalia V. Pshenichnova   +3 more
doaj   +1 more source

Overview of molecular signatures of senescence and associated resources: pros and cons

FEBS Open Bio, EarlyView.
Cells can enter a stress response state termed cellular senescence that is involved in various diseases and aging. Detecting these cells is challenging due to the lack of universal biomarkers. This review presents the current state of senescence identification, from biomarkers to molecular signatures, compares tools and approaches, and highlights ...
Orestis A. Ntintas, Sylvia Vagena, Pavlos Pantelis, Giorgos Theocharous, Russel Petty, Konstantinos Evangelou, Vassilis G. Gorgoulis   +6 more
wiley   +1 more source

Numerical analysis for the pure Neumann control problem using the gradient discretisation method

, 2017
The article discusses the gradient discretisation method (GDM) for distributed optimal control problems governed by diffusion equation with pure Neumann boundary condition. Using the GDM framework enables to develop an analysis that directly applies to a
Droniou, Jerome, Nataraj, Neela, Shylaja, Devika   +2 more
core   +2 more sources

Functional Connectivity Linked to Cognitive Recovery After Minor Stroke

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Patients with minor stroke exhibit slowed processing speed and generalized alterations in functional connectivity involving frontoparietal cortex (FPC). The pattern of connectivity evolves over time. In this study, we examine the relationship of functional connectivity patterns to cognitive performance, to determine ...
Vrishab Commuri, Isabella Dallasta, Ciaran Stone, Sophia Girgenti, Neda Gould, Rafael H. Llinas, Jonathan Z. Simon, Elisabeth Breese Marsh   +7 more
wiley   +1 more source

Approximate Solutions of Time Fractional Diffusion Wave Models

Mathematics, 2019
In this paper, a wavelet based collocation method is formulated for an approximate solution of (1 + 1)- and (1 + 2)-dimensional time fractional diffusion wave equations.
Abdul Ghafoor, Sirajul Haq, Manzoor Hussain, Poom Kumam, Muhammad Asif Jan   +4 more
doaj   +1 more source

Discrete embeddings for Lagrangian and Hamiltonian systems

, 2018
The general topic of the present paper is to study the conservation for some structural property of a given problem when discretising this problem. Precisely we are interested with Lagrangian or Hamiltonian structures and thus with variational problems ...
Cresson, Jacky, Greff, Isabelle, Pierre, Charles   +2 more
core   +1 more source