Results 31 to 40 of about 1,745,388 (267)

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

Minimax Optimal Control [PDF]

open access: yesSIAM Journal on Control and Optimization, 2005
Summary: This paper provides a framework for deriving necessary conditions, in the form of a maximum principle, for minimax optimal control problems. The distinguishing feature of these problems is that the data depends on a vector \(\alpha\) of unknown parameters, and ``optimality'' is defined on a worst case basis, as \(\alpha\) ranges over the ...
openaire   +3 more sources

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

Symbolic Optimal Control [PDF]

open access: yesIEEE Transactions on Automatic Control, 2019
We present novel results on the solution of a class of leavable, undiscounted optimal control problems in the minimax sense for nonlinear, continuous-state, discrete-time plants. The problem class includes entry-(exit-)time problems as well as minimum time, pursuit-evasion and reach-avoid games as special cases.
Gunther Reissig, Matthias Rungger
openaire   +3 more sources

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

Optimal Control

open access: yesScholarpedia, 2008
Optimal control is the process of determining control and state trajectories for a dynamic system over a period of time to minimise a performance index.
openaire   +2 more sources

Prox-STA-LSTM: A Sparse Representation for the Attention-Based LSTM Networks for Industrial Soft Sensor Development

open access: yesIEEE Access
For deep learning based soft sensors, the spatiotemporal attention (STA)-LSTM is a newly emerged technique which provides efficient predictions for quality variables of industrial processes.
Yurun Wang   +5 more
doaj   +1 more source

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