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Enhancing Time Series Anomaly Detection: A Knowledge Distillation Approach with Image Transformation.
Sensors (Basel)
December 2024
Division of Computer Science & Artificial Intelligence, Dongguk University, Seoul 04620, Republic of Korea.
Anomaly detection is critical in safety-sensitive fields, but faces challenges from scarce abnormal data and costly expert labeling. Time series anomaly detection is relatively challenging due to its reliance on sequential data, which imposes high computational and memory costs. In particular, it is often composed of real-time collected data that tends to be noisy, making preprocessing an essential step.
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 PDFMulti-view fusion of diffusion MRI microstructural models: a preterm birth study.
Front Neurosci
December 2024
Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States.
Objective: High Angular Resolution Diffusion Imaging (HARDI) models have emerged as a valuable tool for investigating microstructure with a higher degree of detail than standard diffusion Magnetic Resonance Imaging (dMRI). In this study, we explored the potential of multiple advanced microstructural diffusion models for investigating preterm birth in order to identify non-invasive markers of altered white matter development.
Approach: Rather than focusing on a single MRI modality, we studied on a compound of HARDI techniques in 46 preterm babies studied on a 3T scanner at term-equivalent age and in 23 control neonates born at term.
Cortical and behavioral correlates of alexia in primary progressive aphasia and Alzheimer's disease.
Neuropsychologia
January 2025
Center for Aphasia Research and Rehabilitation, Georgetown University Medical Center, USA.
The underlying causes of reading impairment in neurodegenerative disease are not well understood. The current study seeks to determine the causes of surface alexia and phonological alexia in primary progressive aphasia (PPA) and typical (amnestic) Alzheimer's disease (AD). Participants included 24 with the logopenic variant (lvPPA), 17 with the nonfluent/agrammatic variant (nfvPPA), 12 with the semantic variant (svPPA), 19 with unclassifiable PPA (uPPA), and 16 with AD.
View Article and Find Full Text PDFA tension system for angular correction of bent intramedullary nails: in vitro analysis.
Eur J Orthop Surg Traumatol
December 2024
Department of Orthopedics and Trauma, Universidade Federal Fluminense (UFF), Niterói, Rio de Janeiro, Brazil.
Purpose: Although several techniques have been described for bent intramedullary nail removal, there is no universally accepted strategy. We hypothesized that a device based on the action principle of a three-point bend fixture could facilitate extraction of bent intramedullary nails; this paper describes its design and experimental testing.
Methods: Five large synthetic left femurs and five steel intramedullary nails were used.
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