Recent advances in the biomedical field have generated a massive amount of data and records (signals) that are collected for diagnosis purposes. The correct interpretation and understanding of these signals present a big challenge for digital health vision. In this work, Quantization-based position Weight Matrix (QuPWM) feature extraction method for multiclass classification is proposed to improve the interpretation of biomedical signals. This method is validated on surface Electromyogram (sEMG) signals recognition for eight different hand gestures. The used CapgMyo dataset consists of high-density sEMG signals across 128 channels acquired from 9 intact subjects. Our pilot results show that an accuracy of up to 83% can be achieved for some subjects using a support vector machine classifier, and an average accuracy of 75% has been reached for all studied subjects using the CapgMyo dataset. The proposed method shows a good potential in extracting relevant features from different biomedical signals such as Electroencephalogram (EEG) and Magnetoencephalogram (MEG) signals.
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http://dx.doi.org/10.1109/EMBC44109.2020.9176097 | DOI Listing |
JMIR Res Protoc
January 2025
Centre of Excellence in Women and Child Health, Aga Khan University, Karachi, Pakistan.
Background: The neonatal mortality rate in Pakistan is the third highest in Asia, with 8.6 million preterm babies. These newborns require warmth, nutrition, and infection protection, typically provided by incubators.
View Article and Find Full Text PDFActa Crystallogr B Struct Sci Cryst Eng Mater
February 2025
CSIRO Division of Mineral Products, Port Melbourne, Victoria, Australia.
The crystallographic phase change from tetragonal litharge (α-PbO; P4/nmm) to orthorhombic massicot (β-PbO; Pbcm) has been studied by full-matrix Rietveld analysis of high-temperature neutron powder diffraction data collected in equal steps from ambient temperature up to 925 K and back down to 350 K. The phase transformation takes place between 850 and 925 K, with the coexisting phases having equal abundance by weight at 885 K. The product massicot remains metastable on cooling to near ambient temperature.
View Article and Find Full Text PDFThis article conducts a comparative study of the complexity reduction of neural network (NN) models for nonlinearity compensation used in digital subcarrier multiplexing (DSCM)-based optical communication systems. We employ the NN model based on bi-directional long short-term memory (biLSTM) and 1D-convolutional NN (1D-CNN) layers. To reduce the computation complexity of the proposed solution, weight clustering is applied to the NN.
View Article and Find Full Text PDFSSM Popul Health
March 2025
School of Human Development and Family Sciences, Oregon State University, Corvallis, OR, USA.
Wealth resources has received little attention when studying how socioeconomic status shapes health outcomes. In the United States (USA), there is a growing body of evidence acknowledging a widening racial/ethnic wealth gap. However, little is known about wealth's role in shaping health inequity.
View Article and Find Full Text PDFOper Orthop Traumatol
January 2025
Klinik für Unfall‑, Hand und Wiederherstellungschirurgie, Universitätsmedizin Rostock, Schillingallee 35, 18057, Rostock, Deutschland.
Objective: Treatment with transcutaneous osseointegrated prosthesis systems (TOPS) for short femoral amputation stumps aims to restore independent walking ability after proximal femoral amputation by direct bone-guided prosthesis anchorage. This cannot be safely achieved with conventional socket prostheses due to the mechanically inadequate socket contact surface.
Indications: Treatment of patients with short transfemoral stumps who cannot be mobilized sufficiently with conventional socket prostheses.
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