Results 221 to 230 of about 15,736 (280)

A comprehensive study on tic additions and sliding speed effects governing wear in aluminium matrix composites. [PDF]

open access: yesSci Rep
Bhowmik A   +8 more
europepmc   +1 more source

Advancing Rigor in Operations Management Qualitative Research: From Proceduralism to Reflexive Reasoning

open access: yesJournal of Operations Management, EarlyView.
ABSTRACT Qualitative research has evolved into a valued scientific approach to generate novel theoretical contributions in operations management (OM). However, a limited understanding of what constitutes methodological rigor in qualitative research has resulted in a proceduralized application of research practices and templates, hindering further ...
Miriam Wilhelm   +3 more
wiley   +1 more source

Responsive Phase Gradient Metasurface for Laser Stealth and Dynamic Thermal Camouflage

open access: yesLaser &Photonics Reviews, EarlyView.
The graphical abstract depicts a phase‐gradient metasurface enabling directional scattering and emissivity‐controlled thermal radiation. The engineered phase profile redistributes the reflected optical momentum, suppressing specular reflection and generating non‐specular scattering.
Zhihao Yuan   +7 more
wiley   +1 more source

Static and Dynamic Analysis of Porous Gas Bearings Lubricated With Air, Refrigerant R‐134a, Helium and Hydrogen

open access: yesLubrication Science, EarlyView.
ABSTRACT Porous gas bearings (PGBs) enable high‐speed, oil‐free operation in modern rotating machinery. This study develops a coupled thermo‐hydrodynamic (THD) model for a cylindrical porous gas bearing lubricated with four working fluids—air, R‐134a, helium and hydrogen.
S. Bechiri, B. Bouchehit, B. Bou‐Saïd
wiley   +1 more source

Liquid Crystal Elastomers Filaments for Adaptive Textiles and Soft Robotics: A Processing‐Centric Review

open access: yesMacromolecular Rapid Communications, EarlyView.
Liquid crystal elastomer (LCE) filaments are fabricated through extrusion with in‐process UV curing, enabling controlled flow alignment and network locking of mesogens. The resulting structure responds to thermal or optical stimuli, inducing molecular reorientation and macroscopic contraction.
Anne Schwarz‐Pfeiffer, Shazia Mehtab
wiley   +1 more source

Development and Experimental Validation of a Bistable SMA Active Grill Shutter Actuator

open access: yesMacromolecular Symposia, EarlyView.
ABSTRACT This study explores the use of bistable shape memory alloy (SMA) actuators in active grille shutters (AGS) to improve vehicle aerodynamics. The actuator, designed for adaptive movement, was tested and refined to achieve a reliable 90° rotation.
Miriam Battaglia   +5 more
wiley   +1 more source

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