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Experientially-grounded and distributional semantic vectors uncover dissociable representations of conceptual categories.
Lang Cogn Neurosci
July 2023
Cognition and Brain Sciences Unit, Medical Research Council, Cambridge, UK.
Neuronal populations code similar concepts by similar activity patterns across the human brain's semantic networks. However, it is unclear to what extent such meaning-to-symbol mapping reflects distributional statistics, or experiential information grounded in sensorimotor and emotional knowledge. We asked whether integrating distributional and experiential data better distinguished conceptual categories than each method taken separately.
View Article and Find Full Text PDFCFD Analysis of Particle Dynamics in Accelerated Toroidal Systems for Enhanced PIVG Performance.
Micromachines (Basel)
November 2024
Department of Mechanical and Manufacturing Engineering, Schulich School of Engineering, University of Calgary, 2500 University Dr. NW, Calgary, AB T2N 1N4, Canada.
This study investigates the movements of particles in an accelerated toroidal flow channel filled with water, with specific applications for a particle imaging velocimetry gyroscope (PIVG). We used computational fluid dynamics (CFD) to simulate particle behavior under different angular accelerations. These angular accelerations were 4 rad/s, 6 rad/s, and 8 rad/s for particles densities of 1100 kg/m, 1050 kg/m, and 980 kg/m.
View Article and Find Full Text PDFNumerical modeling of conventional spin-stop agitation of liquid drug products for automated visual inspection.
Int J Pharm
January 2025
Amgen Inc., Process Development, Manufacturing Technology Advancement (MTA) Group, Thousand Oaks, CA 91320, USA. Electronic address:
Article Synopsis
- The automated visual inspection (AVI) of liquid-filled vials and syringes in pharmaceutical production uses a spin-stop motion to detach particles for better detection.
- A validated numerical model for a specific glass vial was created to study how different agitation motions and liquid properties affect particle mobilization.
- Findings indicate that higher angular acceleration during agitation improves the wall shear stress distribution, enhancing particle detection, and the developed model can be adapted for various container types and liquids to optimize AVI processes.
Heterodyne analysis of high-order partial waves in attosecond photoionization of helium.
Nat Commun
January 2025
State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai, China.
Partial wave analysis is key to interpretation of the photoionization of atoms and molecules on the attosecond timescale. Here we propose a heterodyne analysis approach, based on the delay-resolved anisotropy parameters to reveal the role played by high-order partial waves during photoionization. This extends the Reconstruction of Attosecond Beating By Interference of Two-photon Transitions technique into the few-photon regime.
View Article and Find Full Text PDFCreation of a stable vector vortex beam with dual fractional orbital angular momentum.
Sci Rep
January 2025
School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, China.
Recently, vortex beams have been widely studied and applied because they carry orbital angular momentum (OAM). It is widely acknowledged in the scientific community that fractional OAM does not typically exhibit stable propagation; notably, the notion of achieving stable propagation with dual-fractional OAM within a single optical vortex has been deemed impracticable. Here, we address the scientific problem through the combined modulation of phase and polarization, resulting in the generation of a dual-fractional OAM vector vortex beam that can stably exist in free space.
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