Results 41 to 50 of about 41,784 (281)

Repeating Nuclear Transients From Repeating Partial Tidal Disruption Events

Astronomische Nachrichten, EarlyView.
ABSTRACT Extragalactic nuclear transients that exhibit repeating outbursts can be modeled as the repeated dynamical interaction between bound stars and supermassive black holes (SMBHs). A subset of these transients, with recurrence timescales of months‐to‐years, have been explained as accretion flares from the repeated tidal stripping of a star by an ...
Ananya Bandopadhyay, Eric R. Coughlin, Julia Fancher, C. J. Nixon, Dheeraj R. Pasham   +4 more
wiley   +1 more source

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

Two-Dimensional Central-Upwind Schemes for Curvilinear Grids and Application to Gas Dynamics with Angular Momentum

, 2008
In this work we present new second order semi-discrete central schemes for systems of hyperbolic conservation laws on curvilinear grids. Our methods generalise the two-dimensional central-upwind schemes developed by Kurganov and Tadmor.
Abramowitz, Balbás, Balbás, Courant, Courant, Gel'fand, Godunov, Greenberg, Harten, Harten, Hirsch, Illenseer, Kurganov, Kurganov, Kurganov, Kurganov, Langseth, Lax, LeVeque, Lord Rayleigh, Lufkin, Mönchmeyer, Norman, Norman, Schulz-Rinne, Shu, Shu, Stone, Stone, Sweby, Taylor, Tobias F. Illenseer, Tscharnuter, van Leer, van Leer, van Leer, von Neumann, Wolfgang J. Duschl   +37 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

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

WLS-ENO: Weighted-Least-Squares Based Essentially Non-Oscillatory Schemes for Finite Volume Methods on Unstructured Meshes

, 2016
ENO (Essentially Non-Oscillatory) and WENO (Weighted Essentially Non-Oscillatory) schemes are widely used high-order schemes for solving partial differential equations (PDEs), especially hyperbolic conservation laws with piecewise smooth solutions.
Jiao, Xiangmin, Liu, Hongxu
core   +1 more source

Navigating the ESG Paradox: Strategic Pathways Between Innovation and Washing Under Stakeholder Scrutiny

Business Strategy and the Environment, EarlyView.
ABSTRACT As firms increasingly incorporate environmental, social, and governance (ESG) concerns into their strategic agendas, stakeholder legitimacy—an audience‐conferred judgment of organizational appropriateness—has become pivotal. We theorize legitimacy as expanding a hybrid response portfolio in which firms may pursue substantive change (business ...
Min‐Jae Lee, Anna Pak, Donghwi (Josh) Seo, Taewoo Roh   +3 more
wiley   +1 more source