Results 61 to 70 of about 113,253 (227)

Fractional calculus modelling for unsteady unidirectional flow of incompressible fluids with time-dependent viscosity

, 2012
In this note we analyze a model for a unidirectional unsteady flow of a viscous incompressible fluid with time dependent viscosity. A possible way to take into account such behaviour is to introduce a memory formalism, including thus the time dependent ...
Garra, Roberto, Polito, Federico
core   +1 more source

On Some Comparisons of Multistep Methods and Their Applications to Solve Ordinary Differential Equations

WSEAS Transactions on Mathematics
The significance of Multistep Methods with constant coefficients and their application in addressing various Natural Science issues is universally acknowledged. Dahlquist conducted foundational research on these methods.
Imanova Mehriban, V. Ibrahimov
semanticscholar   +1 more source

APPROXIMATION OF BOUNDARY VALUE PROBLEMS FOR INTEGRO-DIFFERENTIAL EQUATIONS WITH DELAY

Bukovinian Mathematical Journal, 2022
In mathematical modeling of physical and technical processes, the evolution of which depends on prehistory, we arrive at differential equations with a delay. With the help of such equations it was possible to identify and describe new effects and phenomena
I. Tuzyk, I. Cherevko
semanticscholar   +1 more source

Roots of resilience: Assessing child and adolescent nature connectivity in the Mediterranean Region of Murcia (Spain)

People and Nature, Volume 8, Issue 2, Page 378-391, February 2026.
Abstract Children today spend less time outdoors than previous generations, with potential consequences for health, learning and pro‐environmental attitudes. We assessed children's connection with and exposure to nature in a Mediterranean setting using the Nature Connection and Experience Index (NCEI), a composite measure that integrates an affective ...
Juan Antonio Ortega‐García, Francisco Díaz‐Martínez, Laura Teresa Cabrera‐Rivera, Carmen Alicia Cánovas‐Conesa, Elena Codina, Rebeca Ramis, Luz Claudio   +6 more
wiley   +1 more source

Stability and asymptotic properties of dissipative evolution equations coupled with ordinary differential equations

Mathematical Control and Related Fields, 2021
In this paper, we obtain some stability results of systems corresponding to the coupling between a dissipative evolution equation (set in an infinite dimensional space) and an ordinary differential equation.
S. Nicaise
semanticscholar   +1 more source

Integrating Urban Expansion and Flood Risk: A Spatial Assessment of Impervious Surface Growth and Floodplain Exposure in Mecklenburg County (2011–2021)

World Water Policy, Volume 12, Issue 1, February 2026.
ABSTRACT Urban expansion significantly impacts flood risk, particularly in rapidly growing areas where impervious surfaces exacerbate surface runoff. This study examines spatial patterns of urban growth and their effects on flood exposure in Mecklenburg County, North Carolina, from 2011 to 2021.
Pegah Madadi, Azad Sadeghi
wiley   +1 more source

Analysis of nonlinear implicit coupled Hadamard fractional differential equations with semi-coupled Hadamard fractional integro-multipoints boundary conditions

Ain Shams Engineering Journal, 2023
The study is devoted to demonstrating the hypothesis necessary for the existence, uniqueness and at least one solution of implicit Hadamard fractional differential equations with nonlocal semi-coupled fractional integro-multipoints boundary conditions ...
Usman Riaz, Akbar Zada, Rizwan, Ilyas Khan, Montaha Mohamed Ibrahim Mohamed, Abdoalrahman S.A. Omer, Abha Singh   +6 more
doaj   +1 more source

A note on the application of wazewski’s topological method to an integro: differential equation of volterra type [PDF]

, 2015
The purpose of this note is to generalize the Wazewski’s Topological Method 11, originally stated for ordinary differential equations, to the integro – differential equation of Volterra type (1), under suitable conditions on the functions involved.Fil ...
Guzmán, Paulo Matias, Lugo, Luciano Miguel, Napoles Valdes, Juan Eduardo, Velázquez, José R.   +3 more
core  

Multi-Component KdV Hierarchy, V-Algebra and Non-Abelian Toda Theory

, 1994
I prove the recently conjectured relation between the $2\times 2$-matrix differential operator $L=\partial^2-U$, and a certain non-linear and non-local Poisson bracket algebra ($V$-algebra), containing a Virasoro subalgebra, which appeared in the study ...
A. Bilal, A. Bilal, A. Bilal, Adel Bilal, E. Olmedilla, F. Calogero, G. Segal, I. Bakas, I. M. Gel'fand, I. M. Gel'fand, I. M. Gel'fand, J.-L. Gervais, J.-L. Gervais, M. Bruschi, P. Francesco Di, P. Mathieu, R. Hirota, V. G. Drinfel'd   +17 more
core   +1 more source

A general approach to the linear stability of viscoelastic shear‐flows

ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, Volume 106, Issue 2, February 2026.
Abstract The present work provides an in‐depth analysis of the linear stability theory of viscoelastic shear‐flows, based upon a constitutive equation of the fading memory type. The particular model considered herein was introduced by Kenneth Walters through the integration of classical rate‐type fluids in a convected frame (Walters 1962).
Johannes Conrad, Martin Oberlack
wiley   +1 more source