Results 81 to 90 of about 913,582 (290)

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

open access: yesAdvanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal   +2 more
wiley   +1 more source

“Not clean English” : How linguistic diversity affects attitudes toward Inner Circle versus Outer Circle Englishes

open access: yes
This study investigates how Inner Circle and Outer Circle English varieties are perceived by EFL students at two separate schools in Sweden, each with varying levels of linguistic diversity among their student bodies.
Saeed, Nicole
core   +2 more sources

English as a Tool of British Political and Linguistic Imperialism in Chinua Achebe’s A Man of the People

open access: yesUniversity of Chitral Journal of Linguistics and Literature, 2019
The spread of English is considered as a tool of British political and linguistic imperialism in effects of globalization. Kachrus Three Circle model of World Englishes has always played significant role in the categorization of the spread of English ...
Naeema Shah
doaj   +1 more source

Impact of English Proficiency on National Prosperity: Comparative Study on the Outer Circle and the Expanding Circle

open access: yesSouth Asian Research Journal of Arts, Language and Literature, 2023
English has become an international language, with a large number of governments promoting its study for national prosperity and economic development. However, there have been only a few empirical studies concerning the impact of English proficiency on the economic development of countries.
openaire   +1 more source

A Simplified Laminar Flow Model for the Pultrusion of Glass Fiber/Polyethylene Terephthalate Commingled Yarns

open access: yesAdvanced Engineering Materials, EarlyView.
A simplified thermoplastic pultrusion model is developed to predict thermal fields in glass fiber/polyethylene terephthalate (GF/PET) composites with reduced computational cost. By combining effective material homogenization, validation against literature data, and Gaussian‐process‐based optimization, the study reveals how heating limits, pulling speed,
Elder Soares   +3 more
wiley   +1 more source

New AI‐Assisted Approach for Expanding the Solution Space: Application to Lattice Structure Design

open access: yesAdvanced Engineering Materials, EarlyView.
This work introduces an innovative framework for designing structured materials by ex panding the design space through reparameterization of qualitative variables into continuous structural descriptors. Combined with machine‐learning‐based prediction and multi‐objective optimization, the approach enables the discovery of novel lattice architectures ...
G. H. Gahimbare   +5 more
wiley   +1 more source

Integration of OpenCV‐Based Microscopic Adhesive Volume Measurement Into a Pyiron Workflow for Automated Data Analysis

open access: yesAdvanced Engineering Materials, EarlyView.
Residual adhesive after electrode loading in adhesive‐assisted resistance spot welding is quantified through a traceable experimental‐to‐digital workflow. Chromatic confocal topography provides calibrated surface‐height data, while OpenCV detects the electrode imprint and integrates adhesive height into comparable volume metrics.
Sung‐Min Wi, Jiangdong Zhao
wiley   +1 more source

Characterization of an OmpA-like outer membrane protein of the acidophilic iron-oxidizing bacterium, Acidithiobacillus ferrooxidans [PDF]

open access: yes, 2011
An OmpA family protein (FopA) previously reported as one of the major outer membrane proteins of an acidophilic iron-oxidizing bacterium Acidithiobacillus ferrooxidans was characterized with emphasis on the modification by heat and the interaction with ...
Kamimura, Kazuo   +9 more
core   +1 more source

Symmetry breaking constraints for packing unequal circles into a minimal outer circle

open access: yesJournal of Global Optimization
Abstract The paper addresses the problem of packing pairwise unequal circles into the circle of minimal radius centered at the origin. This problem with an additional balance condition is considered as well. The corresponding optimization models are highly nonconvex.
Andreas Fischer   +3 more
openaire   +1 more source

Simulation‐Based Analysis of Insert Pull‐Out in Nickel‐Polyurethane Hybrid Foams Using CT‐Derived Geometries

open access: yesAdvanced Engineering Materials, EarlyView.
CT‐based finite element simulations combined with in situ X‐ray computed tomography are used to analyze insert pull‐out in nickel‐coated polymer foams. Despite variations in material parameters, deformation consistently concentrates within a narrow annular region around the insert.
Yannik Bautz   +4 more
wiley   +1 more source

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