Results 121 to 130 of about 2,319,892 (295)
Stability of Viscous Three‐Dimensional Stratified Couette Flow via Dispersion and Mixing
Communications on Pure and Applied Mathematics, EarlyView.ABSTRACT This article explores the stability of stratified Couette flow in the viscous 3d$3d$ Boussinesq equations. In this system, mixing effects arise from the shearing background, and gravity acts as a restoring force leading to dispersive internal gravity waves.
Michele Coti Zelati +2 more
wiley +1 more source
Bootstrap-based Bandwidth Selection for Semiparametric Generalized Regression Estimators [PDF]
This paper considers the problem of implementing semiparametric extremum estimators of a generalized regression model with an unknown link function. The class of estimator under consideration includes as special cases the semiparametric least-squares ...
Chuan Goh
core
Front Propagation Through a Perforated Wall
Communications on Pure and Applied Mathematics, EarlyView.ABSTRACT We consider a bistable reaction– diffusion equation ut=Δu+f(u)$u_t=\Delta u +f(u)$ on RN${\mathbb {R}}^N$ in the presence of an obstacle K$K$, which is a wall of infinite span with many holes. More precisely, K$K$ is a closed subset of RN${\mathbb {R}}^N$ with smooth boundary such that its projection onto the x1$x_1$‐axis is bounded and that ...
Henri Berestycki +2 more
wiley +1 more source
A Geometric Characterization of Steady Laminar Flow
Communications on Pure and Applied Mathematics, EarlyView.ABSTRACT We study the steady states of the Euler equations on the periodic channel or annulus. We show that if these flows are laminar (layered by closed non‐contractible streamlines which foliate the domain), then they must be either parallel or circular flows.
Theodore D. Drivas, Marc Nualart
wiley +1 more source
Compact Manifolds With Unbounded Nilpotent Fundamental Groups and Positive Ricci Curvature
Communications on Pure and Applied Mathematics, EarlyView.ABSTRACT It follows from the work of Kapovitch and Wilking that a closed manifold with nonnegative Ricci curvature has a uniformly almost nilpotent fundamental group. Leftover questions and conjectures, have asked if in this context the fundamental group is actually uniformly almost abelian. The main goal of this work is to construct examples (Mk9,gk)$(
Elia Bruè, Aaron Naber, Daniele Semola
wiley +1 more source
Corporate Social Responsibility and Environmental Management, EarlyView.ABSTRACT Mitigating environmental, social, and governance (ESG) decoupling is essential to advancing reliable sustainability disclosure and ensuring that ESG reporting fulfills its intended purpose. This study aims to provide critical insights into the organizational and contextual elements that could intensify or diminish ESG decoupling. Using a multi‐
Catarina Cepêda +2 more
wiley +1 more source
On a Nash curve selection lemma through finitely many points
Revista Matemática IberoamericanaA celebrated theorem in real algebraic and analytic geometry (originally due to Bruhat–Cartan and Wallace, and stated later in its current form by Milnor) is the (Nash) curve selection lemma, which has wide applications.
openaire +3 more sources
Impact of Emission Reduction Targets on Corporate Greenwashing: International Empirical Evidence
Corporate Social Responsibility and Environmental Management, EarlyView.ABSTRACT This study investigates the influence of emission reduction target characteristics on corporate greenwashing propensity. Through the analysis of 4938 international observations via probit regression, we examine four key dimensions: science‐based validation, target compliance, timeframe, and organizational coverage.
Antonio J. Mateo‐Márquez +2 more
wiley +1 more source
Consistent Order Selection with Strongly Dependent Data and its Application to Efficient Estimation [PDF]
Order selection based on criteria by Akaike (1974), AIC, Schwarz (1978), BIC or Hannan and Quinn (1979) HIC is often applied in empirical examples. They have been used in the context of order selection of weakly dependent ARMA models, AR models with unit
Javier Hidalgo
core
Journal of Forecasting, EarlyView.ABSTRACT This paper presents a method for forecasting limit order book durations using a self‐exciting flexible residual point process. High‐frequency events in modern exchanges exhibit heavy‐tailed interarrival times, posing a significant challenge for accurate prediction.
Kyungsub Lee
wiley +1 more source