Results 21 to 30 of about 87,373,027 (240)

Non-linear coupled CNN models for multiscale image analysis [PDF]

open access: yes, 2006
A CNN model of partial differential equations (PDEs) for image multiscale analysis is proposed. The model is based on a polynomial representation of the diffusivity function and defines a paradigm of polynomial CNNs,for approximating a large class of ...
Corinto, Fernando   +2 more
core   +1 more source

On a Modified Form of Navier-Stokes Equations for Three-Dimensional Flows

open access: yesThe Scientific World Journal, 2015
A rephrased form of Navier-Stokes equations is performed for incompressible, three-dimensional, unsteady flows according to Eulerian formalism for the fluid motion. In particular, we propose a geometrical method for the elimination of the nonlinear terms
J. Venetis
doaj   +1 more source

Deterministic approaches for head lice infestations and treatments

open access: yesInfectious Disease Modelling, 2020
Pediculus humanus capitis are human ectoparasites which cause infestations, mostly in children, worldwide. Understanding the life cycle of head lice is an important step in knowing how to treat lice infestations, as the parasite behavior depends ...
Noemi Castelletti   +1 more
doaj   +1 more source

Coupling techniques of Trefftz methods

open access: yesComputer Assisted Methods in Engineering and Science, 2022
The Trefftz method pioneered by Trefftz [71] in 1926 is described as follows: The particular solutions or the fundamental solutions are chosen, a linear combination of those functions is regarded as an approximate solution of partial differential ...
Hung-Tsai Huang   +2 more
doaj  

Fluorescent cAMP Analogs: Enzymatic Synthesis, Unexpected Photophysical Behavior and Protein Kinase A Recognition

open access: yesAngewandte Chemie, EarlyView.
Cyclic adenosine monophosphate (cAMP) is a key cellular second messenger. Adenylyl cyclase converts emissive isomorphic nucleoside triphosphates into fluorescent cAMPs. cthAMP displays unusually high brightness compared to thATP, its precursor, enabling real‐time monitoring of enzymatic reactions.
Deyuan Cong   +3 more
wiley   +2 more sources

Approximate symmetries of the perturbed KdV-KS equation [PDF]

open access: yesIranian Journal of Numerical Analysis and Optimization
The analysis of approximate symmetries in perturbed nonlinear partial differential equations $(PDEs)$ stands as a cornerstone for unraveling  complex physical behaviors and solution patterns.
A. Mohammadpouri   +3 more
doaj   +1 more source

The Interconnection Between Calculus of Variations, Partial Differential Equations and Differential Geometry

open access: yesSelecciones Matemáticas
Calculus of variations is a fundamental mathematical discipline focused on optimizing functionals, which map sets of functions to real numbers. This field is essential for numerous applications, including the formulation and solution of partial ...
Delphin Mwinken
doaj   +1 more source

From PDEs to Pfaffian fibrations [PDF]

open access: yes, 2020
We explain how to encode the essential data of a PDE on jet bundle into a more intrinsic object called Pfaffian fibration. We provide motivations to study this new notion and show how prolongations, integrability and linearisations of PDEs generalise to ...
Cattafi, F.   +2 more
core   +2 more sources

Exact Solutions for Real and Complex Nonlinear Partial Differential Equations in Engineering Using a Modified Homotopy Perturbation Method

open access: yesEngineered Science
Nonlinear partial differential equations (PDEs) play a fundamental role in modeling complex phenomena in physics and engineering. However, solving them analytically and numerically remains challenging due to divergence, slow convergence, and ...
Osama Alkhazaleh   +2 more
doaj   +1 more source

Expanding Genomics of Mycorrhizal Symbiosis

open access: yesFrontiers in Microbiology, 2014
The mycorrhizal symbiosis between soil fungi and plant roots is a ubiquitous mutualism that plays key roles in plant and soil health, and carbon and nutrient cycles. The symbiosis evolved repeatedly and independently as multiple morphological types (e.g.
Alan eKuo   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy