Results 31 to 40 of about 39,743 (266)

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

open access: yesAdvanced Engineering Materials, Volume 27, Issue 6, March 2025.
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur   +5 more
wiley   +1 more source

Muon Collider lattice concepts [PDF]

open access: yesJournal of Instrumentation, 2018
A Muon Collider poses a number of challenging problems in the lattice design - low beta-star, small circumference, large physical and dynamic aperture - which must be solved in order to realize the unique opportunities it offers for the high-energy physics.
Alexahin, Y.   +2 more
openaire   +2 more sources

Design of Role Based Access Control for Triadic Concept Analysis

open access: yesJournal of Harbin University of Science and Technology, 2020
Formal concept analysis can be used to design access control hierarchy. There are investigations reported in the literature so far on the logic that transforms the three dimensional access control matrix into dyadic formal contexts. The transformation is
WANG Jing yu   +2 more
doaj   +1 more source

Role Minimization Optimization Algorithm Based on Concept Lattice Factor

open access: yesMathematics, 2023
Role-based access control (RBAC) is a widely adopted security model that provides a flexible and scalable approach for managing permissions in various domains.
Tao Wang, Qiang Wu
doaj   +1 more source

Revisiting Stability Criteria in Ball‐Milled High‐Entropy Alloys: Do Hume–Rothery and Thermodynamic Rules Equally Apply?

open access: yesAdvanced Engineering Materials, Volume 27, Issue 6, March 2025.
The stability criteria affecting the formation of high‐entropy alloys, particularly focusing in supersaturated solid solutions produced by mechanical alloying, are analyzed. Criteria based on Hume–Rothery rules are distinguished from those derived from thermodynamic relations. The formers are generally applicable to mechanically alloyed samples.
Javier S. Blázquez   +5 more
wiley   +1 more source

Identification and Prediction of Interdisciplinary Research Topics: A Study Based on the Concept Lattice Theory

open access: yesJournal of Data and Information Science, 2019
Formal concept analysis (FCA) and concept lattice theory (CLT) are introduced for constructing a network of IDR topics and for evaluating their effectiveness for knowledge structure exploration.
Xu Haiyun   +3 more
doaj   +1 more source

Experimental Evaluation of 100Cr6 Steel Microindented Surfaces Under Lubricated Nonconformal Point Contacts

open access: yesAdvanced Engineering Materials, EarlyView.
The tribological behavior of 100Cr6 steel spheres textured via Vickers microindentation is evaluated under lubricated sliding by varying both dimple size and density. Fine and dense textures significantly reduce friction across all lubrication regimes, while large dimples increase it.
Farideh Davoodi   +3 more
wiley   +1 more source

On the Lightweight Potential of Laser Additive Manufactured NiTi Triply Periodic Minimal Sheet Lattices

open access: yesAdvanced Engineering Materials, EarlyView.
This study explores the lightweight potential of laser additive‐manufactured NiTi triply periodic minimal surface sheet lattices. It systematically investigates the effects of relative density and unit cell size on surface quality, deformation recovery, compression behavior, and energy absorption.
Haoming Mo   +3 more
wiley   +1 more source

New Method for Measuring Diagnosis Indexes Based on Concept Lattices in Dam Health Diagnosis

open access: yesIEEE Access
With multi-layers and multi-indexes, dam health diagnosis is an important way to diagnose the structural safety and health operation of dams. This study focuses on the measurement of diagnosis indexes in dam health diagnosis.
Anyi Chen, Xianqi Tang, Jinping He
doaj   +1 more source

Description of Common Characters in Conflict Analysis via GOE-Concept Lattices

open access: yesJisuanji kexue yu tansuo, 2020
Conflicts widely exist in social problems. In order to better straight forwardly present and semantically describe conflict analysis problem, and inspired by three-way approximate concept analysis on the incomplete contexts, this paper regards a conflict
SHI Nini, FAN Yan, WEI Ling
doaj   +1 more source

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