Results 81 to 90 of about 522,389 (335)
Advanced Functional Materials, EarlyView.In situ TEM uncovers the atomic‐scale mechanisms underlying hydrogen‐driven γ‐Fe2O3→Fe3O4→FeO reduction. In γ‐Fe2O3, oxygen vacancies cluster around intrinsic Fe vacancies, leading to nanopore formation, whereas in Fe3O4, vacancy aggregation is suppressed, preserving a dense structure.
Yupeng Wu +14 more
wiley +1 more source
Optimal stochastic control systems
Journal of Mathematical Analysis and Applications, 1963 where X is the state variable, u is the control, and (a, 6) are prescribed for all time t of interest. The initial conditions for the system (1) are drawn from a Gaussian (normal) distribution of specified mean xO.and covariance 0:. Subject to certain constraints (to be specified) on u, we wish to choose a control policy which will minimize (in a sense
openaire +2 more sources
Advanced Functional Materials, EarlyView.A W/NbOx/Pt memristor demonstrates the coexistence of volatile, non‐volatile, and threshold switching characteristics. Volatile switching serves as a reservoir computing layer, providing dynamic short‐term processing. Non‐volatile switching, stabilized through ISPVA, improves reliable long‐term readout. Threshold switching operates as a leaky integrate
Ungbin Byun, Hyesung Na, Sungjun Kim
wiley +1 more source
Maximum Principle for Stochastic Recursive Optimal Control Problems Involving Impulse Controls
Abstract and Applied Analysis, 2012 We consider a stochastic recursive optimal control problem in which the control variable has two components: the regular control and the impulse control.
Zhen Wu, Feng Zhang
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Spectrally Tunable 2D Material‐Based Infrared Photodetectors for Intelligent Optoelectronics
Advanced Functional Materials, EarlyView.Intelligent optoelectronics through spectral engineering of 2D material‐based infrared photodetectors. Abstract The evolution of intelligent optoelectronic systems is driven by artificial intelligence (AI). However, their practical realization hinges on the ability to dynamically capture and process optical signals across a broad infrared (IR) spectrum.
Junheon Ha +18 more
wiley +1 more source
A Unified Pricing of Variable Annuity Guarantees under the Optimal Stochastic Control Framework
Risks, 2016 In this paper, we review pricing of the variable annuity living and death guarantees offered to retail investors in many countries. Investors purchase these products to take advantage of market growth and protect savings.
Pavel V. Shevchenko, Xiaolin Luo
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Optimal Exchange Rates: A Stochastic Control Approach
, 2022 Ahmed S. Abutaleb +1 more
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Using a finite horizon numerical optimisation method for a periodic optimal control problem [PDF]
Computing a numerical solution to a periodic optimal control problem is difficult. A method of approximating a solution to a given (stochastic) optimal control problem using Markov chains was developed in [3].
Azzato, Jeffrey D., Krawczyk, Jacek
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Advanced Functional Materials, EarlyView.This review highlights how machine learning (ML) algorithms are employed to enhance sensor performance, focusing on gas and physical sensors such as haptic and strain devices. By addressing current bottlenecks and enabling simultaneous improvement of multiple metrics, these approaches pave the way toward next‐generation, real‐world sensor applications.
Kichul Lee +17 more
wiley +1 more source
Gaussian estimates on networks with applications to optimal control
Networks and Heterogeneous Media, 2011 We study a class of reaction-diffusion type equations on a finite network with continuity assumptions and a kind of non-local, stationary Kirchhoff's conditions at the nodes.
Luca Di Persio, Giacomo Ziglio
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