Results 81 to 90 of about 844 (191)

A Rapid Post‐Disaster Restoration Method for Networked Microgrids Based on Adaptive Quantum Particle Swarm Optimization

open access: yesEnergy Science &Engineering, Volume 14, Issue 7, Page 3487-3507, July 2026.
To enhance the power restoration speed of networked microgrids (NMGs) after extreme natural disasters and reduce the power outage of the system, this paper proposes a rapid post‐disaster restoration method for NMGs based co‐optimization of fault repair and load restoration.
Yunfan Zhang   +3 more
wiley   +1 more source

Delay-Constrained Shortest Paths: Approximation Algorithms and Second-Order Cone Models [PDF]

open access: yes, 2013
Real-time traffic with stringent Quality of Service requirements is becoming more and more prevalent in contemporary telecommunication networks. When maximum packet delay has to be considered, optimal delay-constrained routing requires not only choosing ...
Galli, Laura   +5 more
core   +1 more source

Enhanced bi-level optimal scheduling strategy for distribution network with multi-microgrids considering source-load uncertainties

open access: yesFrontiers in Energy Research
With the increasing integrations of renewable energy resources into distribution networks (DNs) and microgrids (MGs), the imperative for an effective market scheduling mechanism becomes paramount to enhance the operational safety, reliability, and ...
Guoliang Li   +4 more
doaj   +1 more source

A Deep Learning Framework for Forecasting Medium‐Term Covariance in Multiasset Portfolios

open access: yesJournal of Forecasting, Volume 45, Issue 4, Page 1797-1828, July 2026.
ABSTRACT Forecasting the covariance matrix of asset returns is central to portfolio construction, risk management, and asset pricing. However, most existing models struggle at medium‐term horizons, several weeks to months, where shifting market regimes and slower dynamics prevail.
Pedro Reis, Ana Paula Serra, João Gama
wiley   +1 more source

Mixed-integer linear programming for computing optimal experimental designs [PDF]

open access: yes
The problem of computing an exact experimental design that is optimal for the least-squares estimation of the parameters of a regression model is considered.
Harman, Radoslav, Rosa, Samuel
core   +2 more sources

Optimal Allocation Method for Flexibility Resources in Active Distribution Networks Considering Nodal and Grid Coordination [PDF]

open access: yesDianli jianshe
[Objective] With the increasing penetration of distributed wind and photovoltaic generation in distribution networks, their inherent variability and intermittency have imposed higher requirements on network flexibility. Inadequate flexibility may lead to
ZHANG Qiushi, YU Xueying, SHU Qin, LI Huaqiang, BAI Haoyang, ZHOU Yi, ZANG Tianlei
doaj   +1 more source

Bio‐inspired nanophotonics: Structural color, chirality, and resonance metasurfaces

open access: yesInfoMat, Volume 8, Issue 7, July 2026.
A butterfly‐wing‐inspired anisotropic plasmonic flatband resonant metasurface. Insets, photo of the butterfly, Sasakia charonda, and the SEM image of its wing scale (above); the SEM image of the metasurface (below). Abstract The dazzling colors of butterfly wings and hummingbird feathers are not painted with pigments, but crafted by nature's invisible ...
Weihan Liu, Yao Liang, Din Ping Tsai
wiley   +1 more source

Second-order cone programming based methods for two variants of optimal power flow [PDF]

open access: yes, 2020
Optimal Power Flow (OPF) is a fundamental optimization problem in power system operations. In this thesis, we focus on two variants of the OPF problem: Reactive Optimal Power Flow (ROPF) and Multi-Period Optimal Power Flow (MOPF).
Kayacık, Sezen Ece
core  

NOVEL NUMERICAL PROCEDURES FOR LIMIT ANALYSIS OF STRUCTURES: MESH-FREE METHODS AND MATHEMATICAL PROGRAMMING [PDF]

open access: yes, 2010
Current research in the field of limit analysis is focussing on the development of numerical tools which are sufficiently efficient and robust to be used in engineering practice.
Le, Canh
core  

Two-layer Optimization Scheduling for Off-grid Microgrids Based on Multi-agent Deep Policy Gradient

open access: yesZhongguo dianli
To address the voltage limit violations and bidirectional power flow problems arising from high-penetration integration of distributed renewable energy, this paper proposes a two-layer active-reactive power cooperative optimization method to achieve ...
Huicong FAN   +6 more
doaj   +1 more source

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