Results 111 to 120 of about 1,768,391 (280)

On the integrability of differential equations by quadratures according to Maximovič

Journal of Computational and Applied Mathematics, 2004
In the late 19th century, Vladimir Maximovič developed a theory of the integrability of ordinary differential equations by quadratures which has been more or less forgotten by now. The author intends to present in the article a rigorous form of Maximovič's definition of integrability by quadratures and to prove that all first-order ordinary ...
openaire   +1 more source

Approximation of differential eigenvalue problems [PDF]

, 2013
To solve a one-dimensional second-order differential eigenvalue problem, we use the finite-element method with numerical integration. We analyze the influence of the quadrature formulas used on the error in the approximate eigenvalues and eigenelements ...
Solov'ev S.
core  

Data‐driven emulation of flow‐dependent background‐error variance in variational data assimilation

Quarterly Journal of the Royal Meteorological Society, EarlyView.
A machine‐learning approach is developed to emulate flow‐dependent background‐error variance within a variational data assimilation framework. The method reproduces uncertainty information that would normally require a 50‐member ensemble using only five members, while maintaining comparable observation fit and forecast performance.
Wei Pan, Massimo Bonavita, Marcin Chrust, Elías Hólm   +3 more
wiley   +1 more source

Discrete Implementations Modify the Intuition of Final Set Adjustment in Barrier Function Based Control

International Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT This paper establishes an implementation‐aware framework for Barrier Function Adaptation (BFA) and shows that discrete‐time realizations fundamentally alter the logic of final‐set adjustment. In particular, sufficient conditions are derived to preserve the key benefits of BFA (predefined performance, gain adaptation with uncertain perturbation
Luis Ovalle, Andrés González, Leonid Fridman, Meléndez Alfredo   +3 more
wiley   +1 more source

Digital Twin‐Based Optimization of Service Availability in LEO Mega Constellations Considering Handover Delays in Open RAN

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT As non‐terrestrial networks (NTNs) become integral to future 6G systems, ensuring seamless connectivity and service continuity over low Earth orbit (LEO) satellite constellations is essential. This work investigates the impact of open radio access network (RAN) functional splits on handover performance in NTNs, focusing on minimizing service ...
Siva Satya Sri Ganesh Seeram, Luca Feltrin, Mustafa Ozger, Cicek Cavdar   +3 more
wiley   +1 more source

Approximation of differential eigenvalue problems

, 2020
To solve a one-dimensional second-order differential eigenvalue problem, we use the finite-element method with numerical integration. We analyze the influence of the quadrature formulas used on the error in the approximate eigenvalues and eigenelements ...
Solov'ev S.
core  

Spaceborne Distributed Array Processing for Precision Source Localization

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT Satellite‐based signals intelligence and spectrum sensing increasingly rely on low‐latency signal localization. However, operational processing chains often remain ground‐based, stressing feeder links and limiting scalability as constellations grow.
Dany Mestas, Daniel Weinzierl, Thomas Delamotte, Hervé Legay, Andreas Knopp   +4 more
wiley   +1 more source

AI‐enabled bumpless transfer control strategy for legged robot with hybrid energy storage system

CAAI Transactions on Intelligence Technology, EarlyView.
Abstract Designing Hybrid energy storage system (HESS) for a legged robot is significant to improve the motion performance and energy efficiency of the robot. However, switching between the driving mode and regenerative braking mode in the HESS may generate a torque bump, which has brought significant challenges to the stability of the robot locomotion.
Zhiwu Huang, Zi Yu, Hui Peng, Zixuan Wang, Xiaokang Dai, Weirong Liu, Jing Wang   +6 more
wiley   +1 more source

Static analysis of tapered nanowires based on nonlocal Euler-Bernoulli beam theory via differential quadrature method

Latin American Journal of Solids and Structures
As a first endeavor, bending analysis of tapered nano wires with circular cross section is investigated. In this research, nonlocal elasticity theory based on Euler-Bernoulli beam theory is used to formulate the equations. Differential quadrature method (
Maziar Janghorban
doaj   +1 more source

Benjamin Robins's New Principles of Gunnery and the Response From the British Mathematical, Educational, and Military World of the Mid‐Eighteenth Century

Journal for Eighteenth-Century Studies, EarlyView.
Abstract This article analyses to what degree Benjamin Robins's discoveries in his book New Principles of Gunnery, 1742, affected the British mathematical, military, and educational world of the mid‐eighteenth century. While it drew praise and critique from Europe, especially from the notable mathematician Leonhard Euler, his mathematical theories were
Samuel Dodson
wiley   +1 more source