Results 21 to 30 of about 2,268,267 (281)

Wearable Inertial Sensors-based Joint Kinetics Estimation of Lower Extremity Using a Recurrent Neural Network [PDF]

open access: yes한국정밀공학회지, 2023
Recently, the estimation of joint kinetics such as joint force and moment using wearable inertial sensors has received great attention in biomechanics. Generally, the joint force and moment are calculated though inverse dynamics using segment kinematic ...
Ji Seok Choi   +2 more
doaj   +1 more source

Low power control for magnetically suspended control moment gyro based on current adaptive adjustment‐gimbal angular velocity feedforward method

open access: yesIET Electric Power Applications, 2022
Magnetically suspended control moment gyro (MSCMG) outputs gyro moment by changing the direction of the rotor angular momentum to adjust the spacecraft attitude.
Jinji Sun, Jiye Zhao
doaj   +1 more source

Analysis of non scalar control problems for parabolic systems by the block moment method

open access: yesComptes Rendus. Mathématique, 2023
This article deals with abstract linear time invariant controlled systems of parabolic type. In [9], with A. Benabdallah, we introduced the block moment method for scalar control operators.
Boyer, Franck, Morancey, Morgan
doaj   +1 more source

Shape, Velocity, and Exact Controllability for the Wave Equation

open access: yesJournal of Optimization, Differential Equations and Their Applications, 2022
A new method to prove exact controllability for the wave equation is demonstrated and discussed on several examples. The method of proof first uses a dynamical argument to prove shape controllability and velocity controllability, thereby solving their ...
Sergei Avdonin   +2 more
doaj   +1 more source

On bounded complex Jacobi matrices and related moment problems in the complex plane [PDF]

open access: yesSurveys in Mathematics and its Applications, 2023
In this paper we consider the following moment problem: find a positive Borel measure μ on ℂ subject to conditions ∫ zn dμ = sn, n∈ℤ+, where sn are prescribed complex numbers (moments).
Sergey M. Zagorodnyuk
doaj  

On the order of indeterminate moment problems [PDF]

open access: yes, 2013
For an indeterminate moment problem we denote the orthonormal polynomials by P_n. We study the relation between the growth of the function P(z)=(\sum_{n=0}^\infty|P_n(z)|^2)^{1/2} and summability properties of the sequence (P_n(z)).
Berg, Christian, Szwarc, Ryszard
core   +2 more sources

A Semidefinite Approach for Truncated K-Moment Problems [PDF]

open access: yes, 2012
A truncated moment sequence (tms) of degree d is a vector indexed by monomials whose degree is at most d. Let K be a semialgebraic set.The truncated K-moment problem (TKMP) is: when does a tms y admit a positive Borel measure supported?
Helton, J. William, Jiawang Nie
core   +1 more source

Hausdorff moment problem via fractional moments [PDF]

open access: yesApplied Mathematics and Computation, 2003
We outline an efficient method for the reconstruction of a probability density function from the knowledge of its infinite sequence of ordinary moments. The approximate density is obtained resorting to maximum entropy technique, under the constraint of some fractional moments. The latter ones are obtained explicitly in terms of the infinite sequence of
Novi Inverardi, Pier Luigi   +3 more
openaire   +5 more sources

Optimization problems for construction foundations

open access: yesLietuvos Matematikos Rinkinys, 2000
The mathematical models for optimization of grillage-type foundations are presented. Minimi­sing of maximum in absolute value vertical reactive force, bending moment, and reaction-bending moment together is sought.
Rimantas Belevičius   +1 more
doaj   +3 more sources

General Stieltjes moment problems for rapidly decreasing smooth functions [PDF]

open access: yes, 2017
We give (necessary and sufficient) conditions over a sequence $\left\{ f_{n}\right\} _{n=0}^{\infty}$ of functions under which every generalized Stieltjes moment problem \[ \int_{0}^{\infty} f_{n}(x)\phi(x)\mathrm{d} x=a_{n}, \ \ \ n\in\mathbb{N}, \] has
Estrada, Ricardo, Vindas, Jasson
core   +2 more sources

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