Results 41 to 50 of about 5,624 (113)

Exact Solitary Wave Solutions in Nonlinear Carbon Nanotube Composite Beams on Viscoelastic Foundations Under M‐Truncated Derivative

Journal of Mathematics, Volume 2026, Issue 1, 2026.
In this study, the nonlinear partial differential equation that governs the free vibration of a carbon nanotube composite beam is analytically investigated using the truncated M‐fractional derivative. This model is a beam supported by a nonlinear viscoelastic base and reinforced by carbon nanotubes.
Nadia Javed, Nauman Ahmed, Muhammad Zafarullah Baber, Tukur Abdulkadir Sulaiman, Taha Radwan, Abeer S. Khalifa, Karim K. Ahmed, Dimitri Mugnai   +7 more
wiley   +1 more source

Stability and the Gauge Problem in Non-Perturbative Cosmology

, 2018
In this paper, we describe the first steps towards fully non-perturbative cosmology. We explain why the conventional methods used by cosmologists based on the ADM formulation are generally inadequate for this purpose and why it is advantageous instead to
Ijjas, Anna, Pretorius, Frans, Steinhardt, Paul J.   +2 more
core   +1 more source

Moving Horizon Estimation for Al‐Doped ZnO Nanoparticle Synthesis: An Online UV‐vis Spectroscopy Approach

Nano Select, Volume 6, Issue 12, December 2025.
This study develops a moving horizon estimator for real‐time prediction of AZO nanoparticle properties during sol‐gel synthesis, integrating UV‐vis spectroscopy with a simplified PBE model via DMDc. The method accurately estimates PSD, showing strong agreement with offline data and supporting modern model‐based control to enhance synthesis quality ...
Guohui Yang, Marcel Kévin Jiokeng Dongmo, Thomas Meurer, Hermann Nirschl   +3 more
wiley   +1 more source

Reduced-order Description of Transient Instabilities and Computation of Finite-Time Lyapunov Exponents

, 2017
High-dimensional chaotic dynamical systems can exhibit strongly transient features. These are often associated with instabilities that have finite-time duration.
Arnold V. I., George Haller, Hessam Babaee, Mohamad Farazmand, Themistoklis P. Sapsis   +4 more
core   +1 more source

Elliptic PDE learning is provably data-efficient. [PDF]

Proc Natl Acad Sci U S A, 2023
Boullé N, Halikias D, Townsend A.
europepmc   +1 more source

The Topological State Derivative: An Optimal Control Perspective on Topology Optimisation. [PDF]

J Geom Anal, 2023
Baumann P, Mazari-Fouquer I, Sturm K.
europepmc   +1 more source

Low-rank Parareal: a low-rank parallel-in-time integrator. [PDF]

BIT Numer Math, 2023
Carrel B, Gander MJ, Vandereycken B.
europepmc   +1 more source

From actin waves to mechanism and back: How theory aids biological understanding. [PDF]

Elife, 2023
Beta C, Edelstein-Keshet L, Gov N, Yochelis A.   +3 more
europepmc   +1 more source

Stress resilience-enhancing drugs preserve tissue structure and function in degenerating retina via phosphodiesterase inhibition. [PDF]

Proc Natl Acad Sci U S A, 2023
Luu JC, Saadane A, Leinonen H, Choi EH, Gao F, Lewandowski D, Halabi M, Sander CL, Wu A, Wang JM, Singh R, Gao S, Lessieur EM, Dong Z, Palczewska G, Mullins RF, Peachey NS, Kiser PD, Tabaka M, Kern TS, Palczewski K.   +20 more
europepmc   +1 more source

Stability selection enables robust learning of differential equations from limited noisy data. [PDF]

Proc Math Phys Eng Sci, 2022
Maddu S, Cheeseman BL, Sbalzarini IF, Müller CL.   +3 more
europepmc   +1 more source