Results 51 to 60 of about 204,086 (161)

An Early Algebra Teaching Experiment Aiming at the Improvement of Fourth-Grade Students’ Generalization and Justification Strategies

open access: yesHayef: Journal of Education, 2022
In this study, it was aimed to improve fourth-grade students’ generalization and justification strategies, and an early algebra teaching experiment was applied for this purpose.
Seda YÜCE, Ceylan ŞEN
doaj  

Deterministic chaos: A pedagogical review of the double pendulum case [PDF]

open access: yesRevista Brasileira de Ensino de Física
This review aims to provide a comprehensive evaluation of the dynamics of the double pendulum, with a particular emphasis on its chaotic behavior. It examines the complicated and unpredictable behavior of the double pendulum.
Samuel Rocha de Oliveira
doaj   +1 more source

Mobile target localization and tracking techniques in harsh environment utilizing adaptive multi‐modal data fusion

open access: yesIET Communications, 2021
Multi‐source cooperative positioning systems relying on federated filtering have become attractive development directions of navigation strategy in real‐time localization and tracking under challenging urban environment.
Zhenzhen Mai   +6 more
doaj   +1 more source

Lie-point symmetries of the discrete Liouville equation

open access: yes, 2014
The Liouville equation is well known to be linearizable by a point transformation. It has an infinite dimensional Lie point symmetry algebra isomorphic to a direct sum of two Virasoro algebras.
Levi, Decio   +2 more
core   +1 more source

Parallel solution of eigenproblems in structural dynamics using the implicitly restarted Lanczos method

open access: yesVetor, 2010
This paper presents a parallel implementation of the implicitly restarted Lanczos method for the solution of large and sparse eigenproblems that occur in modal analysis of complex structures using the finite element method.
George O. Ainsworth Jr.   +2 more
doaj   +4 more sources

Estimation of DOA for Noncircular Signals via Vandermonde Constrained Parallel Factor Analysis

open access: yesInternational Journal of Antennas and Propagation, 2018
We provide a complete study on the direction-of-arrival (DOA) estimation of noncircular (NC) signals for uniform linear array (ULA) via Vandermonde constrained parallel factor (PARAFAC) analysis.
Heyun Lin   +3 more
doaj   +1 more source

On the solution of the convolution equation with a sum-difference kernel

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2015
The paper deals with the integral equations of the second kind with a sumdifference kernel. These equations describe a series of physical processes in a medium with a reflective boundary.
Ani G Barseghyan
doaj   +1 more source

Analysis and experimental application of a dead‐time compensator for input saturated processes with output time‐varying delays

open access: yesIET Control Theory & Applications, 2021
Dead‐time compensators (DTCs) are a family of classical controllers derived from the Smith Predictor. Their main characteristic is that they explicitly employ the model of the open‐loop process to feedback a predicted value of the non‐delayed system ...
Thiago Alves Lima   +6 more
doaj   +1 more source

Least Squares Ranking on Graphs [PDF]

open access: yes, 2011
Given a set of alternatives to be ranked, and some pairwise comparison data, ranking is a least squares computation on a graph. The vertices are the alternatives, and the edge values comprise the comparison data.
Hirani, Anil N.   +2 more
core  

An introduction to Lie group integrators -- basics, new developments and applications

open access: yes, 2012
We give a short and elementary introduction to Lie group methods. A selection of applications of Lie group integrators are discussed. Finally, a family of symplectic integrators on cotangent bundles of Lie groups is presented and the notion of discrete ...
Blanes   +70 more
core   +1 more source

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