Results 41 to 50 of about 41,878 (278)

Hyperbolic Conservation Laws on Spacetimes [PDF]

, 2011
We present a generalization of Kruzkov's theory to manifolds. Nonlinear hyperbolic conservation laws are posed on a differential (n+1)-manifold, called a spacetime, and the flux field is defined as a field of n-forms depending on a parameter. The entropy inequalities take a particularly simple form as the exterior derivative of a family of n-form ...
openaire   +2 more sources

Multiresolution analysis for stochastic hyperbolic conservation laws

IMA Journal of Numerical Analysis, 2023
Abstract A multiresolution analysis (MRA) for solving stochastic conservation laws is proposed. Using a novel adaptation strategy and a higher-dimensional deterministic problem, a discontinuous Galerkin (DG) solver is derived. An MRA of the DG spaces for the proposed adaptation strategy is presented.
Herty, Michael, Kolb, Adrian Jürgen, Müller, Siegfried   +2 more
openaire   +3 more sources

The myth of the metabolic baseline: sleep–wake cycles undermine a foundational assumption in organismal biology

Biological Reviews, EarlyView.
ABSTRACT Basal and standard metabolic rate (BMR and SMR) are cornerstones of physiological ecology and are assumed to be relatively fixed intrinsic properties of organisms that represent the minimum energy required to sustain life. However, this assumption is conceptually flawed. Many core maintenance processes underlying SMR are temporally partitioned
Helena Norman, Daphne Cortese, Amelia Munson, Jan Lindström, Shaun S. Killen   +4 more
wiley   +1 more source

On nonlinear strain vectors and tensors in continuum theories of mechanics

Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2014
A non-linear mathematical model of hyperbolic thermoelastic continuum with fine microstructure is proposed. The model is described in terms of 4-covariant field theoretical formalism.
Vladimir A Kovalev, Yuriy N Radayev
doaj   +1 more source

The evidence base for ranger patrol effectiveness in conservation and how to improve it

Biological Reviews, EarlyView.
ABSTRACT Ranger patrols are a cornerstone of wildlife protection efforts around the world and occur across all ecological governance systems. Evidence that patrols reduce threats to wildlife and enable their recovery has not been systematically examined previously.
Trina Rytwinski, Robert S. A. Pickles, Matthew J. Muir, Steven J. Cooke, Joseph R. Bennett, Lisa A. Kelly, Adrienne Smith, Cynthia Cadet, Dwi N. Adhiasto, Inés Arroyo Quiroz, Mark D. Booton, Daphne P. Carlson, Drew T. Cronin, Anthony Dancer, Meredith L. Gore, Jennifer R. B. Miller, Stephen F. Pires, Amy Pokempner, James Slade, Andrew M. Lemieux   +19 more
wiley   +1 more source

Conservation Laws and Exact Solutions for Time-Delayed Burgers–Fisher Equations

Mathematics, 2023
A generalization of the time-delayed Burgers–Fisher equation is studied. This partial differential equation appears in many physical and biological problems describing the interaction between reaction, diffusion, and convection.
Almudena P. Márquez, Rafael de la Rosa, Tamara M. Garrido, María L. Gandarias   +3 more
doaj   +1 more source

Conservation laws arising in the study of forward-forward Mean-Field Games

, 2017
We consider forward-forward Mean Field Game (MFG) models that arise in numerical approximations of stationary MFGs. First, we establish a link between these models and a class of hyperbolic conservation laws as well as certain nonlinear wave equations ...
A Porretta, Diogo A. Gomes, Diogo A. Gomes, Diogo A. Gomes, Diogo A. Gomes, Diogo A. Gomes, Diogo Gomes, J-M Lasry, Jean-Michel Lasry, M Huang, RJ DiPerna, Sophia Demoulini, Y Achdou   +12 more
core   +1 more source

From Ecosystem Threats to Balance Sheets: Biodiversity Risks Exposure and Corporate Cash Policies

Business Strategy and the Environment, EarlyView.
ABSTRACT This study investigates how firms strategically respond to biodiversity risk by examining their cash holding decisions. Using firm‐level data from China, we find that firm‐level biodiversity risk exposure significantly increases corporate cash holdings.
Jing Hao, Ran Sun, Brian Lucey, Feng He, Andrew Urquhart   +4 more
wiley   +1 more source

Hyperbolic systems of conservation laws

Revista Matemática Complutense, 1999
This is a survey on the mathematical theory of hyperbolic systems of conservation laws. The paper, written in Italian language, corresponds to the text of a conference held at the XVI Congress of the Italian Mathematical Union in 1999. Addressing to non-experts, the author gives a very clear exposition of results and problems connected with the one ...
  +7 more sources

On the Convergence of α Schemes with Source Terms for Scalar Convex Conservation Laws

Mathematics, 2023
In this study, we use an extension of Yang’s convergence criterion [N. Jiang, On the wavewise entropy inequality for high-resolution schemes with source terms II: the fully discrete case] to show the entropy convergence of a class of fully discrete α ...
Nan Jiang
doaj   +1 more source