Results 21 to 30 of about 4,643,442 (289)

Asymptotic controllability and optimal control [PDF]

open access: yes, 2012
We consider a control problem where the state must reach asymptotically a target while paying an integral payoff with a non-negative Lagrangian. The dynamics is just continuous, and no assumptions are made on the zero level set of the Lagrangian. Through
Motta, Monica, Rampazzo, Franco
core   +3 more sources

Evolution of a geometric constant along the Ricci flow

open access: yesJournal of Inequalities and Applications, 2016
In this paper, we establish the first variation formula of the lowest constant λ a b ( g ) $\lambda_{a}^{b}(g)$ along the Ricci flow and the normalized Ricci flow, such that to the following nonlinear equation there exist positive solutions: − Δ u + a u ...
Guangyue Huang, Zhi Li
doaj   +1 more source

Dynamics of Vacancy Formation and Distribution in Semiconductor Heterostructures: Effect of Thermally Generated Intrinsic Electrons

open access: yesNanomaterials, 2023
The effect of thermally generated equilibrium carrier distribution on the vacancy generation, recombination, and mobility in a semiconductor heterostructure with an undoped quantum well is studied.
Timur S. Shamirzaev   +3 more
doaj   +1 more source

Optimal control of nonlinear systems: a predictive control approach [PDF]

open access: yes, 2003
A new nonlinear predictive control law for a class of multivariable nonlinear systems is presented in this paper. It is shown that the closed-loop dynamics under this nonlinear predictive controller explicitly depend on design parameters (prediction time
Ballance, D.J.   +2 more
core   +3 more sources

The influence of anthropometric indicators on the availability of vitamin D in residents of Southern Ukraine

open access: yesJournal of Education, Health and Sport, 2023
The social role of the problem of obesity is determined by the threat of disability and a decrease in overall life expectancy due to the frequent development of serious concomitant diseases.
Anton Shanyhin   +3 more
doaj   +1 more source

A Mizuno-Todd-Ye predictor-corrector infeasible-interior-point method for symmetric optimization with the arc-search strategy

open access: yesJournal of Inequalities and Applications, 2017
In this paper, we propose a Mizuno-Todd-Ye predictor-corrector infeasible-interior-point method for symmetric optimization using the arc-search strategy.
Ximei Yang, Yinkui Zhang
doaj   +1 more source

An Efficient Quantum Multi-Collision Search Algorithm

open access: yesIEEE Access, 2020
In this article, we propose an efficient quantum k-collision search algorithm with low quantum memory O(n). The previous quantum k-collision algorithms can not be converted into a low quantum memory k-collision algorithm directly, because the time ...
Jian Zou, Yongyang Liu, Le Dong
doaj   +1 more source

Optimal control for halo orbit missions [PDF]

open access: yes, 2000
This paper addresses the computation of the required trajectory correction maneuvers (TCM) for a halo orbit space mission to compensate for the launch velocity errors introduced by inaccuracies of the launch vehicle.
Koon, Wang Sang   +6 more
core   +1 more source

Radial Symmetry and Monotonicity of Solutions to a System Involving Fractional p-Laplacian in a Ball

open access: yesAdvances in Mathematical Physics, 2018
In this paper, we study a nonlinear system involving the fractional p-Laplacian in a unit ball and establish the radial symmetry and monotonicity of its positive solutions. By using the direct method of moving planes, we prove the following result.
Linfen Cao, Xiaoshan Wang, Zhaohui Dai
doaj   +1 more source

Some bounds for the Z-eigenpair of nonnegative tensors

open access: yesJournal of Inequalities and Applications, 2019
Tensor eigenvalue problem is one of important research topics in tensor theory. In this manuscript, we consider the properties of Z-eigenpair of irreducible nonnegative tensors. By estimating the ratio of the smallest and largest components of a positive
Xiaoyu Ma, Yisheng Song
doaj   +1 more source

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