Results 141 to 150 of about 179,652 (285)

Transportation in graphs and the admittance spectrum

open access: yesDiscrete Applied Mathematics, 1987
The admittance spectrum of the underlying graph is used in order to describe the behaviour of a liquid flowing through a system of communicating pipes. The performance of this process enables us to define the 'permeability' of a graph, the 'well-connectedness' of pairs of vertices and the 'good position' of vertices in terms of the second eigenvalue of
openaire   +2 more sources

A Lightweight Procedural Layer for Hybrid Experimental–Computational Workflows in Materials Science

open access: yesAdvanced Engineering Materials, EarlyView.
We unveil a prototype hybrid‐workflow framework that fuses automatedcomputation with hands‐on experiments. Built atop pyiron, a lightweight, parameterized layer translates procedure descriptions into executable manual steps, syncing instrument settings, human interventions, and data capture in real‐time today.
Steffen Brinckmann   +8 more
wiley   +1 more source

On stochastic completeness of weighted graphs

open access: yes, 2011
Huang X. On stochastic completeness of weighted graphs. Bielefeld: Universität; 2011.In this thesis we are concerned with the long time behavior of continuous time random walks on infinite graphs. The following three related problems are considered.
Huang, Xueping
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Counting and Averaging Problems in Graph Theory [PDF]

open access: yes, 2010
Paul Gunther (1966), proved the following result: Given a continuous function f on a compact surface M of constant curvature -1 and its periodic lift g to the universal covering, the hyperbolic plane, then the averages of the lift g over increasing ...
DOUMA, FEMKE
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On the spectrum of the normalized graph Laplacian

open access: yes, 2008
We investigate how the spectrum of the normalized (geometric) graph Laplacian is affected by operations like motif dougling, graph splitting or joining.
Jost, J.   +3 more
core   +1 more source

Power Spectrum Signatures of Graphs

open access: yesCoRR
Point signatures based on the Laplacian operators on graphs, point clouds, and manifolds have become popular tools in machine learning for graphs, clustering, and shape analysis. In this work, we propose a novel point signature, the power spectrum signature, a measure on $\mathbb{R}$ defined as the squared graph Fourier transform of a graph signal ...
Karamatou Yacoubou Djima, Ka Man Yim
openaire   +2 more sources

Recycling of NiTi Shape Memory Alloys: Fundamental and Technological Aspects of a Vacuum Induction Melting Processing Route

open access: yesAdvanced Engineering Materials, EarlyView.
The present study investigates recycling of NiTi shape memory alloys via vacuum induction melting. An ingot was synthesized from elemental Ni and Ti and subjected to three subsequent remelting cycles. Remelting increases process durations and impurity levels and adversely affects microstructures and functional properties.
Sakia Sophia Noorzayee   +7 more
wiley   +1 more source

An Experimental High‐Throughput Approach for the Screening of Hard Magnet Materials

open access: yesAdvanced Engineering Materials, EarlyView.
An entire workflow for the high‐throughput characterization and analysis of compositionally graded magnetic films is presented. Characterization protocols, data management tools and data analysis approaches are illustrated with test case Sm(Fe, V)12 based films.
William Rigaut   +16 more
wiley   +1 more source

Influence of Surface Finish on the Tribological Performance of AlTiBN Coatings Deposited on Forming Tools

open access: yesAdvanced Engineering Materials, EarlyView.
Aluminum and nitride coatings are used in industry because they are hard, resist wear, and protect against oxidation. Adding boron can improve friction behavior and other properties. This study tests coatings on surfaces with different finishes. Results show smoother surfaces perform better, while rough ones wear faster, although coatings can reduce ...
Adrián Claver   +9 more
wiley   +1 more source

Collaboration and Fairness in Opportunistic

open access: yes, 2005
The Open Spectrum approach to spectrum access can achieve near-optimal spectrum utilization by letting users sense and utilize available spectrum opportunistically. However, naive spectrum assignment can lead to significant interference.
Spectrum Access Haitao
core  

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