Results 21 to 30 of about 2,842 (122)

Optimality Conditions for Nonlinear Semidefinite Programming via Squared Slack Variables

open access: yes, 2015
In this work, we derive second-order optimality conditions for nonlinear semidefinite programming (NSDP) problems, by reformulating it as an ordinary nonlinear programming problem using squared slack variables.
Fukuda, Ellen H.   +2 more
core   +1 more source

A Miyaoka–Yau inequality for hyperplane arrangements in CPn$\mathbb {CP}^n$

open access: yesJournal of the London Mathematical Society, Volume 113, Issue 4, April 2026.
Abstract Let H$\mathcal {H}$ be a hyperplane arrangement in CPn$\mathbb {CP}^n$. We define a quadratic form Q$Q$ on RH$\mathbb {R}^{\mathcal {H}}$ that is entirely determined by the intersection poset of H$\mathcal {H}$. Using the Bogomolov–Gieseker inequality for parabolic bundles, we show that if a∈RH$\mathbf {a}\in \mathbb {R}^{\mathcal {H}}$ is ...
Martin de Borbon, Dmitri Panov
wiley   +1 more source

Sequential Convex Programming Methods for Solving Nonlinear Optimization Problems with DC constraints [PDF]

open access: yes, 2011
This paper investigates the relation between sequential convex programming (SCP) as, e.g., defined in [24] and DC (difference of two convex functions) programming.
Diehl, Moritz, Quoc, Tran Dinh
core  

Hopfield Neural Networks for Online Constrained Parameter Estimation With Time‐Varying Dynamics and Disturbances

open access: yesInternational Journal of Adaptive Control and Signal Processing, Volume 40, Issue 3, Page 544-564, March 2026.
This paper proposes two projector‐based Hopfield neural network (HNN) estimators for online, constrained parameter estimation under time‐varying data, additive disturbances, and slowly drifting physical parameters. The first is a constraint‐aware HNN that enforces linear equalities and inequalities (via slack neurons) and continuously tracks the ...
Miguel Pedro Silva
wiley   +1 more source

A Comparative Study of MINLP and MPVC Formulations for Solving Complex Nonlinear Decision‐Making Problems in Aerospace Applications

open access: yesOptimal Control Applications and Methods, Volume 47, Issue 1, Page 4-23, January/February 2026.
ABSTRACT High‐level decision‐making for dynamical systems often involves performance and safety specifications that are activated or deactivated depending on conditions related to the system state and commands. Such decision‐making problems can be naturally formulated as optimization problems where these conditional activations are regulated by ...
Andrea Ghezzi   +4 more
wiley   +1 more source

Robust Beamforming for ISAC Systems via Probability of Detection Optimisation

open access: yesElectronics Letters, Volume 62, Issue 1, January/December 2026.
We propose a two‐step robust beamforming design for ISAC that maximises multi‐target detection probability while satisfying multi‐user SINR and per‐antenna power constraints. A sensing‐only Riemannian optimisation on the oblique manifold shapes the transmit covariance, followed by SDR‐based reconstruction to enforce communication guarantees ...
Yong Wang, Xianren Kong
wiley   +1 more source

On some interconnections between strict monotonicity, globally uniquely solvable, and P properties in semidefinite linear complementarity problems

open access: yesLinear Algebra and its Applications, 2003
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Gowda, M.Seetharama   +2 more
openaire   +2 more sources

An Intelligent Robust Control Framework for Stability Enhancement in Renewable Energy Powered Hybrid AC/DC Microgrids With Integrated Hydrogen Energy Systems

open access: yesIET Energy Systems Integration, Volume 8, Issue 1, January/December 2026.
ABSTRACT Hybrid AC/DC microgrids that integrate photovoltaic, wind, battery and hydrogen energy systems are prone to DC‐bus voltage fluctuations because of their low inertia and converter‐based operation. This paper proposes a robust backstepping nonsingular fast terminal integral sliding mode controller that incorporates a virtual capacitor and a ...
Md Saiful Islam   +3 more
wiley   +1 more source

Decentralized Multi‐Source Distributionally Robust Dispatch of Integrated Power‐Gas Systems Considering Operational Flexibility

open access: yesIET Generation, Transmission &Distribution, Volume 20, Issue 1, January/December 2026.
The integrated power‐gas system (IPGS) is composed of an electricity network and a gas network, which are managed by the power system operator and the gas system operator, respectively. Gas‐fired units and electrolysers serve as critical energy conversion equipment to couple heterogeneous energy networks.
Jie Li   +4 more
wiley   +1 more source

Optimal Signaling of MISO Full-Duplex Two-Way Wireless Channel

open access: yes, 2015
We model the self-interference in a multiple input single output (MISO) full-duplex two-way channel and evaluate the achievable rate region. We formulate the boundary of the achievable rate region termed as the Pareto boundary by a family of coupled, non-
Aazhang, Behnaam, Jia, Shuqiao
core   +1 more source

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