Results 51 to 60 of about 11,267 (231)

Processes and Predictions in Ecological Models: Logic and Causality

Journal of Forecasting, Volume 44, Issue 5, Page 1658-1665, August 2025.
ABSTRACT To make credible ecological predictions for terrestrial ecosystems in a changing environment and increase our understanding of ecological processes, we need plant ecological models that can be fitted to spatial and temporal ecological data.
Christian Damgaard
wiley   +1 more source

Astroglial CB1 Reveal Sex‐Specific Synaptic Effects of Amphetamine

Glia, Volume 73, Issue 8, Page 1673-1691, August 2025.
Main Points Astroglial CB1 mediate long‐term depression in the NAc through purine release. Amphetamine occludes LTD in male mice by inducing the saturation of A1 receptors. Astroglial CB1 mediate behavioral amphetamine effects in males, but not in females.
Yamuna Mariani, Tommaso Dalla‐Tor, Tommaso Garavaldi, Francisca Julio‐Kalajzić, Doriane Gisquet, Paula Gomez‐Sotres, Astrid Cannich, Giuditta Gambino, Filippo Drago, Roman Serrat, Imane Hurel, Francis Chaouloff, Sandrine Pouvreau, Luigi Bellocchio, Giovanni Marsicano, Ana Covelo   +15 more
wiley   +1 more source

Boundedness of solutions of matrix nonlinear volterra difference equations

Discrete Dynamics in Nature and Society, 2002
Nonlinear discrete-time Volterra equations in a Euclidean space are considered. Conditions for the boundedness of solutions are established by virtue of recent estimates for the norm of the resolvent of Volterra operators.
Michael I. Gil', Rigoberto Medina
doaj   +1 more source

An approach of extrapolation methods for the solution of nonlinear Volterra–Fredholm integral equations of the second kind [PDF]

Iranian Journal of Numerical Analysis and Optimization
This study presents the process of using extrapolation methods to solve the nonlinear Volterra–Fredholm integral equations of the second kind. To do this, by approximating the integral terms contained in equations by a quadrature rule, the nonlinear ...
H. Safdari, M. Moradkhani, M.T. Dastjerdi   +2 more
doaj   +1 more source

Nonlocal Cooperative Behavior, Psychological Effects, and Collective Decision‐Making: An Exemplification With Predator–Prey Models

Mathematical Methods in the Applied Sciences, Volume 48, Issue 12, Page 12011-12037, August 2025.
ABSTRACT In bio‐social models, cooperative behavior has evolved as an adaptive strategy, playing multi‐functional roles. One of such roles in populations is to increase the success of the survival and reproduction of individuals and their families or social groups.
Sangeeta Saha, Swadesh Pal, Roderick Melnik   +2 more
wiley   +1 more source

Lavrentiev Regularization of Integral Equations of the First Kind in the Space of Continuous Functions

Известия Иркутского государственного университета: Серия "Математика", 2016
The regularization method of linear integral Volterra equations of the first kind is considered. The method is based on the perturbation theory. In order to derive the estimates of approximate solutions and regularizing operator norms we use the Banach ...
I. Muftahov, D. Sidorov, N. Sidorov
doaj  

Boundedness of Discrete Volterra Equations

Journal of Mathematical Analysis and Applications, 1997
AbstractInvestigation of the boundedness of the solutions of Volterra equations with discrete time by means of the direct Liapunov method and comparison theorems is performed. Boundedness conditions of solutions of some particular classes of equations are derived.
V. Kolmanovskii, M. R. Crisci, E. Russo, Antonia Vecchio   +3 more
openaire   +2 more sources

Uniform Asymptotic Stability of a PDE'S System Arising From a Flexible Robotics Model

Mathematical Methods in the Applied Sciences, Volume 48, Issue 11, Page 11242-11251, 30 July 2025.
ABSTRACT In this paper, we investigate the uniform asymptotic stability of a fourth‐order partial differential equation with a fading memory forcing term and boundary conditions arising from a flexible robotics model. To achieve this goal, the model is reformulated in an abstract framework using the C0$$ {C}_0 $$‐semigroup theory.
Tiziana Cardinali, Serena Matucci, Paola Rubbioni   +2 more
wiley   +1 more source

Theoretical and numerical results about some weakly singular Volterra-Fredholm equations

Journal of Numerical Analysis and Approximation Theory, 2008
In this paper existence, uniqueness results for the solution of some weakly singular linear Volterra and Volterra-Fredholm integral equations are given.
F. Calió, E. Marchetti, V. Mureșan
doaj   +2 more sources

A method for solving nonlinear Volterra integral equations of the second kind [PDF]

, 1969
Peter Linz
openalex   +2 more sources