Results 91 to 100 of about 42,635 (224)

The Approximation of Functions of Several Variables with Bounded p-Fluctuation by Polynomials in the Walsh System

open access: yesMathematics
This paper presents direct and inverse theorems concerning the approximation of functions of several variables with bounded p-fluctuation using Walsh polynomials.
Talgat Akhazhanov   +2 more
doaj   +1 more source

Characterization of Besov spaces with dominating mixed smoothness by differences

open access: yesMathematische Nachrichten, Volume 298, Issue 7, Page 2116-2151, July 2025.
Abstract Besov spaces with dominating mixed smoothness, on the product of the real line and the torus as well as bounded domains, are studied. A characterization of these function spaces in terms of differences is provided. Applications to random fields, like Gaussian fields and the stochastic heat equation, are discussed, based on a Kolmogorov ...
Paul Nikolaev   +2 more
wiley   +1 more source

The what, how, and why of trait‐based analyses in ecology

open access: yesEcography, Volume 2025, Issue 7, July 2025.
Functional diversity is increasingly used alongside taxonomic diversity to describe populations and communities in ecology. Indeed, functional diversity metrics allow researchers to summarise complex occupancy patterns in space and/or time across communities and/or populations in response to various stressors.
Thomas Guillerme   +4 more
wiley   +1 more source

STATISTICAL SYNTHESIS OF FORECAST CHARACTERISTICS OF COMPLEX TECHNICAL SYSTEM BY TIME SERIES

open access: yesНаучный вестник МГТУ ГА, 2016
The article analyses the problem of building a medium-term forecast of the recovery trend in the average. We present a method of recovery trend in the form of a polynomial whose coefficients are determined by the inverse functions which are approximated ...
N. A. Severcev   +2 more
doaj  

Maneuvering Star-Convex Extended Target Tracking Based on Modified Expected- Mode Augmentation Algorithm

open access: yesJournal of Aerospace Technology and Management, 2023
In utilizing a variable-structure multiple-model (VSMM) algorithm for kinematic state estimation, the core step is the model set design. This study aims to refine the existing expected-mode augmentation (EMA) algorithm, a method of model set design.
Jinjin Zhang, Lifan Sun, Dan Gao
doaj  

Advances in the Kinematics of Hexapod Robots: An Innovative Approach to Inverse Kinematics and Omnidirectional Movement

open access: yesApplied Sciences
Hexapod robots have gained significant attention due to their potential applications in complex terrains and dynamic environments. However, traditional inverse kinematics approaches often face challenges in meeting the precision required for adaptive ...
Jorge A. Lizarraga   +4 more
doaj   +1 more source

On the Generalized $ \overline{\theta({\tt{t}})} $-Fibonacci sequences and its bifurcation analysis

open access: yesAIMS Mathematics
This paper introduces a general nabla operator of order two that includes coefficients of various trigonometric functions. We also introduce its inverse, which leads us to derive the second-order $ \overline{\theta({\tt{t}})} $-Fibonacci polynomial ...
Rajiniganth Pandurangan   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy