Results 121 to 130 of about 25,571,312 (380)

Rigid Polynomial Differential Systems with Homogeneous Nonlinearities

open access: yesMathematics
Planar differential systems whose angular velocity is constant are called rigid or uniform differential systems. The first rigid system goes back to the pendulum clock of Christiaan Huygens in 1656; since then, the interest for the rigid systems has been
Jaume Llibre
doaj   +1 more source

Well Conditioned Spherical Polynomial Systems

open access: yesJournal of Approximation Theory, 1999
The author studies nonnegative spherical polynomials \(p\) normalized by \(p(1)= 1\) that minimizes a surface integral over the unit surface for fixed degree. These polynomials are used to construct systems of nodes on the sphere that support stable numerical systems of zonal harmonics such as those whose condition numbers are bounded.
openaire   +1 more source

Pattern Formation in Non‐Equilibrium Architected Materials

open access: yesAdvanced Materials Technologies, EarlyView.
This article demonstrates an artificial mechanical system ‐ a robotic metamaterial ‐ as an accessible and versatile platform within which to explore and prescribe the reaction‐diffusion driven pattern formation hitherto associated with comparatively less accessible and versatile non‐equilibrium biological and chemical systems.
Vinod Ramakrishnan, Michael J. Frazier
wiley   +1 more source

Polynomial dynamical systems associated with the KdV hierarchy

open access: yesPartial Differential Equations in Applied Mathematics
In 1974, S.P. Novikov introduced the stationary n-equations of the Korteweg–de Vries hierarchy, namely the n-Novikov equations. These are associated with integrable polynomial dynamical systems, with polynomial 2n integrals, in ℂ3n.
V.M. Buchstaber, E. Yu. Bunkova
doaj   +1 more source

Smart and Sustainable Sizing: Investigating the Sensing Behavior of Glass Fabrics Coated With Waterborne Polyurethane/Graphene Dispersions

open access: yesAdvanced Materials Technologies, EarlyView.
Waterborne polyurethane/graphene formulations are developed as piezoresistive coatings on glass fabric to enable flexible strain sensing. The graphene‐enabled conductive network provides a stable electromechanical response under cyclic compression. The coating demonstrates reliable pressure‐dependent resistance changes, highlighting its potential for ...
Vishnu Vijayan Pillai   +8 more
wiley   +1 more source

Centers of planar polynomial systems. A review

open access: yesLe Matematiche, 1998
See directly the article.
Roberto Conti
doaj  

Modified Polynomial Method to Synthesize a Control Algorithm for a System Model with First Order Inertia and Time Delay

open access: gold, 2022
Bartolomeu Izvoreanu   +5 more
openalex   +2 more sources

Characterization of Droplet Formation in Ultrasonic Spray Coating: Influence of Ink Formulation Using Phase Doppler Anemometry and Machine Learning

open access: yesAdvanced Materials Technologies, EarlyView.
This study explores how machine learning models, trained on small experimental datasets obtained via Phase Doppler Anemometry (PDA), can accurately predict droplet size (D32) in ultrasonic spray coating (USSC). By capturing the influence of ink complexity (solvent, polymer, nanoparticles), power, and flow rate, the model enables precise droplet control
Pieter Verding   +5 more
wiley   +1 more source

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