Results 91 to 100 of about 3,362 (237)

Discrete Approaches to Continuous Boundary Value Problems: Existence and Convergence of Solutions

Abstract and Applied Analysis, 2016
We investigate two types of first-order, two-point boundary value problems (BVPs). Firstly, we study BVPs that involve nonlinear difference equations (the “discrete” BVP); and secondly, we study BVPs involving nonlinear ordinary differential equations ...
Douglas R. Anderson, Christopher C. Tisdell   +1 more
doaj   +1 more source

Solid Mechanics Segregated Solver Acceleration With Jacobian‐Free Newton‐Krylov

International Journal for Numerical Methods in Engineering, Volume 127, Issue 11, 15 June 2026.
ABSTRACT The segregated algorithm is a common approach for finite volumes solvers in solid mechanics, providing a memory‐efficient and straightforward implementation. Due to the inter‐coupling of the components through the source terms, it suffers from a slow convergence behavior in specific scenarios, such as geometries with significantly uneven ...
Andry Monlon, Alessandro Scolaro, Philip Cardiff, Ivor Clifford, Oskari Pakari, Mathieu Hursin   +5 more
wiley   +1 more source

Fixed point theorems for Reich, Hardy–Rogers, and Ćirić contractions in cone modular spaces via -iteration and applications to nonlinear integral equations

Mathematics Open
This paper presents a comprehensive study of fixed point theorems for Reich, Hardy–Rogers, and Ćirić-type contractions in the framework of cone modular spaces.
Elvin Rada
doaj   +1 more source

ANALYSIS OF POSSIBLE CAUSES AND MECHANISMS OF DESTRUCTION OF BUILDING STRUCTURES

International Journal for Computational Civil and Structural Engineering, 2018
In order to better understand the wave properties of the Timoshenko equation, the derivation of the refined equation from the equations of the plane elasticity problem for a long band is carried out.
Еvgeniy M. Zveryayev, Evgeniy A. Larionov   +1 more
doaj   +1 more source

Integrated Transcriptomics Reveals Evolutionary Trajectories and Cell Density‐Dependent Mechanisms in Aldosterone‐Producing Adenomas

Advanced Science, Volume 13, Issue 32, 9 June 2026.
Aldosterone‐producing adenomas (APAs) develop via two distinct paths: directly from adrenal zona glomerulosa (zG) cells, or stepwise from zG cells through aldosterone‐producing micronodules (APMs) before progressing to APAs. Advanced single‐cell and spatial analyses identified distinct cell states linked to oxidative stress and cell–cell interactions ...
Zhuolun Sun, Changying Jing, Martina Tetti, Siyuan Gong, Jia Wei, Yingxian Pang, Martin Reincke, Tracy Ann Williams   +7 more
wiley   +1 more source

Conservation Status of Two Italian Local Poultry Breeds: Faraona Camosciata and Oca Padovana

Animal Genetics, Volume 57, Issue 3, June 2026.
ABSTRACT The present study aimed to assess the conservation status and characterize the phenotypic and genomic diversity of two endangered Italian poultry genetic resources to guide their conservation plans. Blood samples and morphometric data were collected on 50 Faraona Camosciata (FAC, Numida meleagris) and 50 Oca Padovana (OPD, Anser anser) adult ...
Filippo Cendron, Enrico Bortoletto, Francesco Perini, Maristella Baruchello, Umberto Rosani, Emiliano Lasagna, Martino Cassandro, Mauro Penasa   +7 more
wiley   +1 more source

Genomic Variation and Population Structure of Portuguese Native Dog Breeds

Animal Genetics, Volume 57, Issue 3, June 2026.
ABSTRACT The presence of dogs in Portugal is confirmed by zooarchaeological evidence dating to at least 7600 years ago. The 11 native dog breeds that exist in this territory are therefore the end‐product of a complex evolutionary process. This study characterises the genomic diversity and population structure of 10 native breeds based on whole‐genome ...
Ludmilla Blaschikoff, Octávio Serra, Fernanda Simões, Catarina Ginja, Ana Elisabete Pires   +4 more
wiley   +1 more source

Picard-type iterations for solving Fredholm integral equations

, 2021
The theoretical solution of Fredholm integral equations involves the calculus of the inverse of an operator. However, for practical purposes, the calculus of this inverse could be not possible or very complicated.
Hernández Verón, Miguel A., Gutiérrez, José M.   +1 more
core  

Raman Spectroscopy–Based Glucose Feed Control Automates Malic Acid Fermentation

Biotechnology and Bioengineering, Volume 123, Issue 6, Page 1721-1732, June 2026.
Raman spectroscopy enables automated, closed‐loop glucose feeding for malic acid production with Ustilago trichophora. Online PLS regression of glucose and malic acid provides input for PID control to maintain 20 g/L glucose. The feed is dynamically adjusted and stopped in response to metabolic demand and product inhibition, demonstrating practical ...
Luca Antonia Grebe, Katharina Hürter, Dominik Engel, Alexander Walter Wilhelm Echtermeyer, Mafalda S. Santos, Laurin Röder, Valentin Steier, Jörn Viell, Jørgen Barsett Magnus   +8 more
wiley   +1 more source

Solving stiff problems using generalized picard iteration

, 2009
The main point of the talk is an alternative approach to the construction of numerical methods for stiff problems. It can be interpreted as a generalization of fixed-point iterations for implementation of implicit collocation methods.
Mandrik, P. A., Repnikov, V. I., Faleichik, B. V., Bobkov, V. V.   +3 more
core