Results 131 to 140 of about 382,423 (270)

A safe reinforcement learning approach for autonomous navigation of mobile robots in dynamic environments

open access: yesCAAI Transactions on Intelligence Technology, EarlyView., 2023
Abstract When deploying mobile robots in real‐world scenarios, such as airports, train stations, hospitals, and schools, collisions with pedestrians are intolerable and catastrophic. Motion safety becomes one of the most fundamental requirements for mobile robots.
Zhiqian Zhou   +7 more
wiley   +1 more source

Degree theory for 4‐dimensional asymptotically conical gradient expanding solitons

open access: yesCommunications on Pure and Applied Mathematics, EarlyView.
Abstract We develop a new degree theory for 4‐dimensional, asymptotically conical gradient expanding solitons. Our theory implies the existence of gradient expanding solitons that are asymptotic to any given cone over S3$S^3$ with non‐negative scalar curvature. We also obtain a similar existence result for cones whose link is diffeomorphic to S3/Γ$S^3/\
Richard H. Bamler, Eric Chen
wiley   +1 more source

A priori bounds for the generalised parabolic Anderson model

open access: yesCommunications on Pure and Applied Mathematics, EarlyView.
Abstract We show a priori bounds for solutions to (∂t−Δ)u=σ(u)ξ$(\partial _t - \Delta) u = \sigma (u) \xi$ in finite volume in the framework of Hairer's Regularity Structures [Invent Math 198:269–504, 2014]. We assume σ∈Cb2(R)$\sigma \in C_b^2 (\mathbb {R})$ and that ξ$\xi$ is of negative Hölder regularity of order −1−κ$- 1 - \kappa$ where κ<κ¯$\kappa <
Ajay Chandra   +2 more
wiley   +1 more source

Fourier Mass Lower Bounds for Batchelor‐Regime Passive Scalars

open access: yesCommunications on Pure and Applied Mathematics, EarlyView.
ABSTRACT Batchelor predicted that a passive scalar ψν$\psi ^\nu$ with diffusivity ν$\nu$, advected by a smooth fluid velocity, should typically have Fourier mass distributed as |ψ̂ν|2(k)≈|k|−d$|\widehat{\psi }^\nu |^2(k) \approx |k|^{-d}$ for |k|≪ν−1/2$|k| \ll \nu ^{-1/2}$.
William Cooperman, Keefer Rowan
wiley   +1 more source

Small ball probabilities for the stochastic heat equation with colored noise

open access: yesStochastic Processes and their Applications
We consider the stochastic heat equation on the 1-dimensional torus $\mathbb{T}:=\left[-1,1\right]$ with periodic boundary conditions: $$ \partial_t u(t,x)=\partial^2_x u(t,x)+σ(t,x,u)\dot{F}(t,x),\quad x\in \mathbb{T},t\in\mathbb{R}_+, $$ where $\dot{F}(t,x)$ is a generalized Gaussian noise, which is white in time and colored in space.
openaire   +3 more sources

Sustainability and Earnings Quality: The Moderating Role of Institutional Factors

open access: yesCorporate Social Responsibility and Environmental Management, EarlyView.
ABSTRACT The objective of this paper is to examine the impact of firms' sustainability performance on earnings quality, with a particular focus on the moderating role of institutional factors in Latin American countries for the period 2012–2023. A panel data set with 390 companies was structured with information sourced from the London Stock Exchange ...
Juan F. Garrido Navia   +3 more
wiley   +1 more source

Optimal size selection of combined diesel generator/fuel cell/photovoltaic system components using a multi‐objective strategy and sea lion optimization algorithm

open access: yesIET Renewable Power Generation, EarlyView., 2023
The main purpose of the presented paper is to offer an optimum arrangement for a combined diesel generator/FC/PV system to off‐grid supplying of the electricity in a community in Shache, China. Abstract One of the challenges of the production sector of the electricity industry at present is how to meet the needs of electricity consumption in the ...
Hongbin Wang   +3 more
wiley   +1 more source

Pesticide Contamination in the Hair of Children From Colonia San Juan, a Rural Community in Paraguay

open access: yesDrug Testing and Analysis, EarlyView.
Hair analysis in children from a rural community in Paraguay reveals exposure to organophosphates, pyrethroids, neonicotinoids, fungicides, herbicides, and endocrine disruptors, highlighting the urgent need for stricter environmental protections and preventive health measures. ABSTRACT Chronic exposure to pesticides can cause carcinogenic, reproductive,
Stela Benitez Leite   +5 more
wiley   +1 more source

Uncovering the Interaction Nature of Solvation Shell for Transition‐Metal‐Based Aqueous Batteries

open access: yesEcoEnergy, EarlyView.
Multiscale analyses are adopted to demystify the interaction and regularize the mechanism of ligand regulation for solvation by the methods of quantum chemistry, molecular dynamics, and wavefunction analyses. ABSTRACT Transition‐metal‐based aqueous batteries, particularly iron and zinc‐based systems, have emerged as promising candidates for energy ...
Yuxi Song   +7 more
wiley   +1 more source

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