Results 11 to 20 of about 7,474,629 (259)

Analysis of the Mechanical Properties and Study of Influential Factors of Different Materials in Tape Spring

open access: yesApplied Sciences, 2023
This paper analyzes and calculates the mechanical properties of composite tape spring structures during folding and bending and establishes a non-linear control equation for the folding and bending of composite laminate tape spring structures.
Yang Yang, Fan Wang, Jieshan Liu
doaj   +1 more source

Algorithmic portfolio tilting to harvest higher moment gains

open access: yesHeliyon, 2020
Many financial portfolios are not mean-variance-skewness-kurtosis efficient. We recommend tilting these portfolios in a direction that increases their estimated mean and third central moment and decreases their variance and fourth central moment.
Kris Boudt   +3 more
doaj   +1 more source

Approximation Properties of New Modified Gamma Operators

open access: yesJournal of Function Spaces, 2021
This paper is aimed at constructing new modified Gamma operators using the second central moment of the classic Gamma operators. And we will compute the first, second, fourth, and sixth order central moments by the moment computation formulas, and their ...
Yun-Shun Wu   +3 more
doaj   +1 more source

Plate-Like Flexible Spacecraft Modeling and Distribution of Control Moment Gyroscopes

open access: yesSpace: Science & Technology, 2023
This study investigates the optimization configuration problem of control moment gyroscopes for flexible vibration suppression of large space structures.
Jingyu Guo   +3 more
doaj   +1 more source

Estimation of a respiratory signal from a single-lead ECG using the 4th order central moments

open access: yesCurrent Directions in Biomedical Engineering, 2015
For a variety of clinical applications like magnetic resonance imaging (MRI) the monitoring of vital signs is a common standard in clinical daily routine.
Schmidt Marcus   +4 more
doaj   +1 more source

Convergence rates in the central limit theorem for weighted sums of Bernoulli random fields

open access: yesModern Stochastics: Theory and Applications, 2018
Moment inequalities for a class of functionals of i.i.d. random fields are proved. Then rates are derived in the central limit theorem for weighted sums of such randoms fields via an approximation by m-dependent random fields.
Davide Giraudo
doaj   +1 more source

Temporal variation in seismic moment release rate of slow slips inferred from deep low-frequency tremors in the Nankai subduction zone

open access: yesEarth, Planets and Space, 2020
We examined seismic moment release rates as estimated from deep low-frequency tremors at episodic tremor and slip (ETS) zones on the plate interface in the Nankai subduction zone.
Yoko Kono   +2 more
doaj   +1 more source

Characterizing the Spatio-Temporal Variations of Urban Growth with Multifractal Spectra

open access: yesEntropy, 2023
Urban morphology exhibits fractal characteristics, which can be described by multifractal scaling. Multifractal parameters under positive moment orders primarily capture information about central areas characterized by relatively stable growth, while ...
Meng Fu, Yanguang Chen
doaj   +1 more source

Deformational Behavior of Reinforced Concrete Beams under Service Loading Conditions

open access: yesJournal of King Saud University: Engineering Sciences, 1991
The paper presents the results of an experimental study conducted on model-size reinforced concrete beams aiming at quantifying the effect of cracking under various types of loading on their deflection responses.
Rajeh Z. AI-Zaid   +2 more
doaj   +1 more source

Consistent tests of conditional moment restrictions [PDF]

open access: yes, 2006
We propose two classes of consistent tests in parametric econometric models defined through multiple conditional moment restrictions. The first type of tests relies on nonparametric estimation, while the second relies on a functional of a marked ...
Domínguez, Manuel A.   +2 more
core   +3 more sources

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