Results 101 to 110 of about 559 (266)

High-Order Adaptive Gegenbauer Integral Spectral Element Method for Solving Nonlinear Optimal Control Problems

open access: yes, 2017
In this work, we propose an adaptive spectral element algorithm for solving nonlinear optimal control problems. The method employs orthogonal collocation at the shifted Gegenbauer-Gauss points combined with very accurate and stable numerical quadratures ...
Elgindy, Kareem T.
core   +1 more source

Approximate Quadrature Measures on Data-Defined Spaces [PDF]

open access: yes, 2018
30 pages; Accepted for publication in "Festschrift for the 80th Birthday of Ian Sloan" (Josef Dick, Frances Y Kuo, Henryk Wozniakowski, Editors), Springer ...
openaire   +2 more sources

CLEAR Interference Cancellation in a Wideband Dual‐Channel Receiver for Independent Satellite Multi‐Connectivity Links

open access: yesInternational Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT In this paper, the correlation learning estimation and adaptive reduction (CLEAR) of interference, an adaptive, blind and transparent interference compensation method applied in a wideband dual‐channel receiver, is studied for a pair of independent satellite multi‐connectivity links, using the same carrier frequency and signal bandwidth in use
Svilen Dimitrov
wiley   +1 more source

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

open access: yesCAAI 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   +6 more
wiley   +1 more source

APPROXIMATE METHODS OF SOLUTION OF SINGULAR INTEGRO-DIFFERENTIAL EQUATIONS OF DIFFRACTION [PDF]

open access: yes, 2017
В работе для численного решения сингулярного интегро-дифференциального уравне- ния задачи дифракции используется метод механических квадратур. Доказано, что этот метод устойчив относительно малых возмущений элементов аппроксимирую- щих уравнений.For ...
Ахмадиев Марат Габдулбарович
core  

Influence of Moisture on Electrical Properties of Fibre‐Reinforced Polymer Core Rod in the Decay‐Like Degraded Composite Insulator

open access: yesHigh Voltage, EarlyView.
ABSTRACT Abnormal heating due to decay‐like degradation in composite insulators is influenced by environmental moisture, but the relationship between the internal degradation status of the core rods and their electrical properties under varying humidity conditions remains poorly understood. In this work, the decay‐like degraded fibre‐reinforced polymer
Shuqi Liu   +8 more
wiley   +1 more source

neonSoilFlux: An R package for continuous sensor‐based estimation of soil CO2 fluxes

open access: yesMethods in Ecology and Evolution, EarlyView.
Abstract Accurate quantification of soil carbon fluxes is essential to reduce uncertainty in estimates of the terrestrial carbon sink. However, these fluxes vary over time and across ecosystem types and so, it can be difficult to estimate them accurately across large scales.
John Zobitz   +11 more
wiley   +1 more source

From tetrachoric to kappa: How to assess reliability on binary scales

open access: yesBritish Journal of Mathematical and Statistical Psychology, EarlyView.
Abstract Reliability is crucial in psychometrics, reflecting the extent to which a measurement instrument can discriminate between individuals or items. While classical test theory and intraclass correlation coefficients are well‐established for quantitative scales, estimating reliability for binary outcomes presents unique challenges due to their ...
Sophie Vanbelle
wiley   +1 more source

Asymptotic standard errors for reliability coefficients in item response theory

open access: yesBritish Journal of Mathematical and Statistical Psychology, EarlyView.
Abstract In a recent review, Liu et al. (Psychological Methods, 2025b) classified reliability coefficients into two types: classical test theory (CTT) reliability and proportional reduction in mean squared error (PRMSE). This article focuses on quantifying the sampling variability of these coefficients under item response theory (IRT) models.
Youjin Sung, Yang Liu
wiley   +1 more source

APPROXIMATE METHODS OF SOLUTION OF SINGULAR INTEGRO-DIFFERENTIAL EQUATIONS OF DIFFRACTION

open access: yes, 2020
55-58В работе для численного решения сингулярного интегро-дифференциального уравне- ния задачи дифракции используется метод механических квадратур. Доказано, что этот метод устойчив относительно малых возмущений элементов аппроксимирую- щих уравнений.For
Ахмадиев Марат Габдулбарович
core  

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