Results 191 to 200 of about 275,582 (319)

Simultaneous hysteresis‐dynamics compensation in high‐speed, large‐range trajectory tracking: A data‐driven iterative control

open access: yesInternational Journal of Robust and Nonlinear Control, Volume 33, Issue 1, Page 489-506, 10 January 2023., 2023
Abstract In this article, a data‐driven difference‐inversion‐based iterative control (DDD‐IIC) approach is proposed to compensate for both nonlinear hysteresis and dynamics of Hammerstein systems. Simultaneous hysteresis‐dynamics compensation is needed in control of Hammerstein systems such as smart actuators, where effects of hysteresis and dynamics ...
Zhihua Wang, Qingze Zou
wiley   +1 more source

Survive the economic downturn: Operating flexibility, productivity, and stock crash

open access: yesJournal of Operations Management, EarlyView.
Abstract Operating flexibility supports a firm's resilience strategy during challenging times by enabling them to promptly cut down operating costs associated with unproductive resources. We employ a real options model to formalize this insight. Our empirically grounding analytics motivate a firm‐level proxy for downscale operating flexibility (FLEX ...
Yang Li   +3 more
wiley   +1 more source

Aggregating distributed energy resources for grid flexibility services: A distributed game theoretic approach

open access: yesInternational Journal of Robust and Nonlinear Control, EarlyView., 2023
Abstract We propose a hierarchical energy management scheme for aggregating Distributed Energy Resources (DERs) for grid flexibility services. To prevent a direct participation of numerous prosumers in the wholesale electricity market, aggregators, as self‐interest agents in our scheme, incentivize prosumers to provide flexibility. We firstly model the
Xiupeng Chen   +3 more
wiley   +1 more source

Syzygies of algebraic varieties through symmetric products of algebraic curves [PDF]

open access: yesarXiv
This is a survey paper on recent work on syzygies of algebraic varieties. We discuss the gonality conjecture on weight-one syzygies of algebraic curves, syzygies of secant varieties of algebraic curves, syzygies of tangent developable surfaces and Green's conjecture on syzygies of canonical curves, and asymptotic syzygies of algebraic varieties.
arxiv  

Reflections on the Spatial Exponential Growth of Electromagnetic Quasinormal Modes

open access: yesLaser &Photonics Reviews, EarlyView.
Quasinormal modes (QNMs) offer a robust framework for understanding the physics of resonators. However, conceptual challenges arise in regions distant from resonators, where QNM fields exponentially grow. This growth is not unphysical, but gives rise to counterintuitive effects, which is explained by examining fundamentals of non‐Hermitian systems ...
Tong Wu   +2 more
wiley   +1 more source

Algebraic curves on a torus

open access: yesIndagationes Mathematicae (Proceedings), 1974
O Bottema, E.J.F Primrose
openaire   +2 more sources

Regularity and separation for Grušin‐type p‐Laplace operators

open access: yesMathematische Nachrichten, EarlyView.
Abstract We analyze p‐Laplace type operators with degenerate elliptic coefficients. This investigation includes Grušin‐type p‐Laplace operators. We describe a separation phenomenon in elliptic and parabolic p‐Laplace type equations, which provide an illuminating illustration of simple jump discontinuities of the corresponding weak solutions ...
Daniel Hauer, Adam Sikora
wiley   +1 more source

Joint parameter estimation and decoding in a distributed receiver

open access: yesInternational Journal of Satellite Communications and Networking, Volume 41, Issue 1, Page 59-81, January/February 2023., 2023
This paper presents an algorithm for iterative joint channel parameter (carrier phase, Doppler shift, and Doppler rate) estimation and decoding of transmission over channels affected by Doppler shift and Doppler rate using a distributed receiver. We derive the Weighted Bayesian Cramer‐Rao Bounds for joint carrier phase, Doppler shift, and Doppler rate ...
Ahsan Waqas   +3 more
wiley   +1 more source

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