Results 81 to 90 of about 20,294 (194)

Enhanced Linear Quadratic Regulator‐Based Strategy for Seamless Transition Between Microgrid Operation Modes

open access: yesIET Power Electronics, Volume 19, Issue 1, January/December 2026.
This paper presents an LQR‐based strategy for seamless transition between grid‐forming and grid‐following inverters in microgrids. The proposed design integrates the comprehensive control loops of the grid‐forming and grid‐following inverters. A systematic, gradient‐based optimization framework is used for selecting the weighting matrices.
Adel Tatish, Kanchapogu Vaisakh
wiley   +1 more source

Adaptive Relaxed ADMM: Convergence Theory and Practical Implementation

open access: yes, 2017
Many modern computer vision and machine learning applications rely on solving difficult optimization problems that involve non-differentiable objective functions and constraints.
Figueiredo, Mario A. T.   +4 more
core   +1 more source

Recursive and Explicit Theoretical Enclosed Forms Variable Step-Size Incremental LMS

open access: yesIEEE Access
recursive and explicit theoretical enclosed-form relations of variable step-size (VSS) incremental least mean square (VSSILMS) are derived in agent localization and wireless sensor networks (WSNs). Possible relevant applications of this work include WSNs,
Ali Almohammedi   +3 more
doaj   +1 more source

Evolution of Collective, Radiative Plasmon Coupling in Confined, Soft Colloidal Films

open access: yesAdvanced Optical Materials, Volume 13, Issue 34, December 2, 2025.
Plasmon resonance coupling is continuously monitored during the uniaxial manipulation of a 2‐dimensional soft colloidal film containing hexagonally arranged spherical gold nanocrystals. This is realized by the in situ spectroscopic investigation of a monolayer of plasmonic core‐shell microgels confined at the air/water interface that is compressed in a
Déborah Feller   +7 more
wiley   +1 more source

On Stochastic Subgradient Mirror-Descent Algorithm with Weighted Averaging [PDF]

open access: yes, 2013
This paper considers stochastic subgradient mirror-descent method for solving constrained convex minimization problems. In particular, a stochastic subgradient mirror-descent method with weighted iterate-averaging is investigated and its per-iterate ...
Angelia Nedic ́   +2 more
core  

An Alternating Variable Step-Size Adaptive Long-Range Prediction of LMS Fading Signals

open access: yesInternational Journal of Distributed Sensor Networks, 2015
We propose a linear alternating variable step-size adaptive long-range prediction (AVSS-ALRP) scheme to predict fading signals which is especially suitable for a versatile two-state land mobile satellite (LMS) channel model at S-band. A three-step design
Xi Liao   +3 more
doaj   +1 more source

A Variable Step-Size Exponentially Fitted Explicit Hybrid Method for Solving Oscillatory Problems

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2011
An exponentially fitted explicit hybrid method for solving oscillatory problems is obtained. This method has four stages. The first three stages of the method integrate exactly differential systems whose solutions can be expressed as linear combinations ...
F. Samat, F. Ismail, M. B. Suleiman
doaj   +1 more source

A Variable Step-Size Regularization-Based Quasi-Newton Adaptive Filter for System Identification

open access: yesIEEE Access
The family of least mean square (LMS) based adaptive filtering algorithms suffers from convergence performance limitation due to the sensitivity of such algorithms to the eigenvalue spread of the input correlation matrix.
Mehdi Bekrani, Hadi Zayyani
doaj   +1 more source

Broadband 1 × 3 Couplers With Variable Splitting Ratio Using Cascaded Step-Size MMI

open access: yesIEEE Photonics Journal, 2018
In this paper, we propose and fabricated a novel scheme of SOI-based 1 × 3 coupler with variable splitting ratio. The coupler consists of two cascaded MMI with different sizes, and a wide range of splitting ratios from 1:0.1:1 to 1:18:1 can be ...
Ye Tian   +6 more
doaj   +1 more source

Symplectic difference systems: variable stepsize discretization and discrete quadratic functionals

open access: yesLinear Algebra and its Applications, 2003
The authors consider the positivity and the nonnegativity of some discrete quadratic functionals with variable endpoints for variable stepsize symplectic difference systems. Seventeen theorems are given for the above-mentioned properties of such functionals in terms of conjugate intervals, conjoined bases, and implicit and explicit Riccati equations ...
Hilscher, Roman, Zeidan, Vera
openaire   +1 more source

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