Results 31 to 40 of about 12,472 (260)

Robust transmission expansion planning using pair-based convex hull uncertainty sets under high penetration of renewable energy generation

open access: yesEnergy Reports, 2022
Robust optimization is a practical and effective mathematical framework for coping with uncertainty in the transmission expansion planning (TEP) process, while computing the full convex hull is an outstanding data-driven means of searching for robust ...
Xin Yin   +3 more
doaj   +1 more source

On Convex Hulls of Epigraphs of QCQPs [PDF]

open access: yes, 2020
To appear at IPCO 2020.
Alex L. Wang, Fatma Kilinç-Karzan
openaire   +3 more sources

Convex hulls of Lévy processes

open access: yesElectronic Communications in Probability, 2016
11 ...
Molchanov, Ilya, Wespi, Florian
openaire   +3 more sources

Hildebrandt's theorem for the essential spectrum [PDF]

open access: yesOpuscula Mathematica, 2015
We prove a variant of Hildebrandt's theorem which asserts that the convex hull of the essential spectrum of an operator \(A\) on a complex Hilbert space is equal to the intersection of the essential numerical ranges of operators which are similar to \(A\
Janko Bračič, Cristina Diogo
doaj   +1 more source

Investigating the Low‐Temperature Phase Stability of the Binary Ta–W System

open access: yesAdvanced Engineering Materials, EarlyView.
Atomistic simulations show that the binary Ta–W system forms ordered intermetallic phases, B2‐TaW and D03‐TaW3, as 0 K ground states. Configurational entropy, however, lowers the free energy of the disordered bcc solid solution, which becomes the stable phase above about 400 K.
Klemens Lechner   +7 more
wiley   +1 more source

Breaking Bottlenecks in Solid Electrolyte Discovery With Large Artificial Intelligence Models

open access: yesAdvanced Materials, EarlyView.
Large AI models are presented as a route to break key bottlenecks in solid electrolyte discovery by linking materials databases, machine‐learning interatomic potentials, large language models, and autonomous experiments. This perspective highlights how AI can accelerate the identification of solid electrolytes with fast ion transport, stable interfaces,
Eric Jianfeng Cheng   +24 more
wiley   +1 more source

Error Analysis of the Convex Hull Method for the Solution of the Distribution System Security Region

open access: yesEnergies
The convex hull method is a common approach for the solution of the distribution system security region (DSSR). For the first time, this paper identifies that this method is not applicable to solve many DSSRs.
Jun Xiao, Lixing Wang, Yupeng Zhou
doaj   +1 more source

Phase Diagrams Enable Solid‐State Battery Design

open access: yesAdvanced Materials Interfaces, EarlyView.
Batteries are non‐equilibrium devices with inherent thermodynamic driving forces to react at interfaces, regardless of kinetics or operating conditions. Chemical potential mismatches across interfaces are dissipated via interfacial reactions. In this work, it is illustrated how phase diagrams and chemical potential maps predict degradation pathways but
Nathaniel L. Skeele, Matthias T. Agne
wiley   +1 more source

A U‐shaped Microfluidic Platform for Culturing Vascularized Colorectal Cancer Spheroids Reveals Tumor–Endothelial Crosstalk and Invasion‐Associated Remodeling

open access: yesAdvanced Materials Technologies, EarlyView.
A closed U‐shaped microfluidic platform symmetrically embeds a single, size‐controlled HT29 colorectal cancer spheroid within a GFP‐HUVEC‐laden fibrin matrix. HT29 spheroids are associated with hyper‐branched endothelial network remodeling, while vascularized co‐culture is accompanied by anisotropic protrusive growth and EMT‐like marker changes in the ...
G. Cretti   +4 more
wiley   +1 more source

Convex Hull Pricing for Unit Commitment: Survey, Insights, and Discussions

open access: yesEnergies
Energy prices are usually determined by the marginal costs obtained by solving economic dispatch problems without considering commitment costs. Hence, generating units are compensated through uplift payments. However, uplift payments may undermine market
Farhan Hyder   +3 more
doaj   +1 more source

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