Results 81 to 90 of about 40,062 (237)

Municipality‐Level Outcomes of Direct‐Democratic Votes in Switzerland, 1866–2023

Swiss Political Science Review, EarlyView.
Abstract Switzerland relies heavily on direct‐democratic institutions to decide on a wide range of political issues. Since 1848, more than 600 direct‐democratic votes have taken place at the national level. However, the lack of comprehensive data has limited the systematic use of these votes for research.
Patrick Emmenegger, Lucas Leemann, Andreina Thoma, André Walter   +3 more
wiley   +1 more source

Hyers–Ulam Stability Analysis of Nonlinear Volterra–Fredholm Integro-Differential Equation with Caputo Derivative

Fractal and Fractional
The main aim of this study is to examine the Hyers–Ulam stability of fractional derivatives in Volterra–Fredholm integro-differential equations using Caputo fractional derivatives.
Govindaswamy Gokulvijay, Salah Boulaaras, Sriramulu Sabarinathan   +2 more
doaj   +1 more source

Oscillations of linear integro-differential equations

Open Mathematics, 2005
Abstract Sufficient conditions which guarantee that certain linear integro-differential equation cannot have a positive solution are established.
Rudolf Olach, Helena Šamajová
openaire   +4 more sources

Nonlinear Sequential Fractional Integro‐Differential Systems: Caputo‐Type Derivatives and Boundary Constraints

Mathematical Methods in the Applied Sciences, Volume 48, Issue 16, Page 15194-15218, 15 November 2025.
ABSTRACT In recent years, the study of sequential fractional differential equations (SFDEs) has become increasingly important in multiple domains of science and engineering. This work investigates a new class of boundary value problems (BVPs) characterized by nonlocal closed boundary conditions involving SFDEs with Caputo fractional integral operators.
Saud Fahad Aldosary, Manigandan Murugesan, Hami Gündoğdu   +2 more
wiley   +1 more source

Hopf bifurcation of integro-differential equations

Proceedings of The 6'th Colloquium on the Qualitative Theory of Differential Equations (August 10--14, 1999, Szeged, Hungary) edited by: Géza Makay and László Hatvani, 1999
Summary: A method reducing integro-differential equations (IDEs) to a system of ordinary differential equations (ODEs) is proposed. On this basis stability and bifurcation phenomena in critical cases are studied. An analogy of Hopf bifurcation for scalar first order IDEs is obtained. Conditions for the existence of periodic solutions are proposed.
Alexander Domoshnitsky, Yakov Goltser
openaire   +4 more sources

Jung’s Theory of Dreaming and the Findings of Empirical and Clinical Dream Research

Journal of Analytical Psychology, Volume 70, Issue 5, Page 764-786, November 2025.
Abstract Dreams have been used in psychotherapy since the early days of psychoanalysis, and the effectiveness of therapeutic work with dreams is now well documented. However, there is still no empirically based model for contemporary therapeutic dream work that integrates the findings of empirical and clinical dream research. Structural Dream Analysis (
Christian Roesler
wiley   +1 more source

Three-dimensional integro-multipoint boundary value problem for loaded Volterra-hyperbolic integro-differential equations of Bianchi type

Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2012
In this paper the combined three-dimensional non-local boundary value problem with integro-multipoint conditions for loaded volterra-hyperbolic integro-differential equation of Bianchi type is explored.
Ilgar G Mamedov
doaj   +3 more sources

Challenges in Automatic Differentiation and Numerical Integration in Physics‐Informed Neural Networks Modelling

International Journal for Numerical Methods in Engineering, Volume 126, Issue 20, 30 October 2025.
ABSTRACT In this paper, we numerically examine the precision challenges that emerge in automatic differentiation and numerical integration in various tasks now tackled by physics‐informed neural networks (PINNs). Specifically, we illustrate how ill‐posed problems or inaccurately computed functions can cause serious precision issues in differentiation ...
Josef Daněk, Jan Pospíšil
wiley   +1 more source

On a stochastic hyperbolic integro-differential equation

Journal of Differential Equations, 2004
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +3 more sources

Modeling heterogeneity in large‐scale bioreactors using the method of moments with a truncated normal distribution

AIChE Journal, Volume 71, Issue 10, October 2025.
ABSTRACT Large‐scale bioreactors in industrial bioprocesses pose challenges due to extracellular concentration gradients and intracellular heterogeneity. This study introduces a novel approach integrating the method of moments with truncated normal distributions (MM‐TND) to model intracellular heterogeneity while maintaining computational feasibility ...
Ittisak Promma, Marc G. Aucoin, Nasser Mohieddin Abukhdeir, Hector Budman   +3 more
wiley   +1 more source