Results 181 to 190 of about 227,714 (275)

Perturbation Algorithm for a Minimax Regret Minimum Spanning Tree Problem

open access: yesOperations Research and Decisions, 2014
The problem of finding a robust spanning tree has been analysed. The problem consists of determining a minimum spanning tree of a graph with uncertain edge costs. We should determine a spanning tree that minimizes the difference in costs between the tree
Mariusz Makuchowski
doaj  

Multi‐Mechanical Regulation of 3D Printed Triply Periodic Hyperbolic Surfaces via Fourier Synthesis‐Based Free Modeling

open access: yesAdvanced Science, EarlyView.
Arbitrary structural regulations of triple periodic hyperbolic surfaces are achieved using mathematical Fourier construction and 3D printing technology, enriching the geometric forms and achieving optimized mechanical behaviors. Abstract Triply periodic hyperbolic surfaces (TPHSs) have attracted significant attention due to their exceptional ...
Yanhong Zhang   +6 more
wiley   +1 more source

Multi‐Dimensional Multiplexed Metasurface for Multifunctional Near‐Field Modulation by Physics‐Driven Intelligent Design

open access: yesAdvanced Science, EarlyView.
The expansive design space of advanced metasurfaces, particularly those with multiple degrees of freedom (MDOF), renders traditional design methods less effective. A physics‐driven intelligent design is proposed for MDOF metasurfaces, which integrates physical knowledge into neural networks, enhancing interpretability and computational efficiency. This
Jian Lin Su   +10 more
wiley   +1 more source

On calculation of the stability radius for a minimum spanning tree

open access: yesЖурнал Белорусского государственного университета: Математика, информатика, 2017
We consider a minimum spanning tree problem in the situation where weights of edges are exposed to independent perturbations. We study a quantitative characteristic of stability for a given optimal solutions of the problem.
Yauheni D. Zhyvitsa, Kiril G. Kuzmin
doaj  

Subgenome Dominance in Allotetraploid Actinidia valvata Regulates RNA m6A Modification for Waterlogging Tolerance

open access: yesAdvanced Science, EarlyView.
The waterlogging tolerance of allotetraploid Actinidia valvata is inherited from one of its diploid progenitors, which leads to subgenome expression dominance, mediated by complex mechanisms including altered chromatin accessibility and DNA methylation.
Xiaoli Hu   +14 more
wiley   +1 more source

Farthest neighbors, maximum spanning trees and related problems in higher dimensions

open access: bronze, 1992
Pankaj K. Agarwal   +2 more
openalex   +1 more source

Kinetically Limited Growth of Dendritic Tin Oxide Thin Films: a Machine Learning Study beyond the Structure Zone Diagram

open access: yesAdvanced Science, EarlyView.
This work presents a critical evaluation of the empirical Thornton's structure zone diagram, a cornerstone in predicting thin film microstructure. Through transmission electron microscopy, we observe that Sn─O thin films form nanosized dendrites, which are not expected according to the structure zone diagram.
Denis Music   +5 more
wiley   +1 more source

A Generative AI‐Assisted Piezo‐MEMS Ultrasound Device for Plant Dehydration Monitoring

open access: yesAdvanced Science, EarlyView.
This study introduces a complementary metal–oxide–semiconductor (CMOS)‐compatible wearable piezoelectric micromachined ultrasound transducers (PMUTs) that sandwiches the leaf (PMUT–Leaf–PMUT, PLP) and employs generative artificial intelligence for real‐time analysis.
Kaustav Roy   +7 more
wiley   +1 more source

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