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BOSQUE Test set : a dermoscopic image dataset from colombian patients with diverse skin phototypes
No full textABSTRACT: The BOSQUE Test Set is a curated dataset of 151 dermoscopic images of pigmented skin lesions, collected from dermatology consultations and outreach campaigns in Bogotá, Colombia. Each image is accompanied by expert-verified metadata including histological diagnosis, patient demographic details, anatomical site, and skin phototype. The dataset is intended to support machine learning research in dermatology with a particular focus on skin tone diversity and fairness in diagnostic algorithms
Electromagnetic Transient Modeling of Switched Reluctance Motor Drive System by a Circuit-based Method
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Microstructural study of liquefaction in highly polydisperse granular media
Full text linkABSTRACT: During earthquakes, rapid loading on loose, water-saturated silty sands can lead to undrained (constant volume) conditions that induce high pore water pressures. This process, known as liquefaction in geotechnical engineering, involves a loss of stress in the solid phase (effective) and can result in structural failures, such as frequent mine tailings dam collapses. Understanding the particle-scale mechanisms behind liquefaction is crucial for predictive modeling. However, this aspect remains poorly explored due to experimental limitations. In this study, we use discrete element method (DEM) simulations on one highly polydisperse granular material to investigate liquefaction. Samples of varying density are prepared by removing different amounts of floating particles (rattlers) after consolidation. The samples are then sheared under constant volume to the critical state. The results show that loose samples lose all strength, medium-loose samples temporarily liquefy but regain strength at large strains, and denser samples do not liquefy and exhibit continued shear strain hardening. At the micro-mechanical scale, permanent liquefaction is linked to heterogeneous solid fraction distributions (macropores), while samples with uniformly distributed local solid fraction either resist liquefaction or recover from it
Theory of Periodic Sequence: A Highly-Efficient Signal Integrity Modeling for Ultra-Broadband Transmission Lines
No full textBeam Scanning in a Dual-Reflector Antenna with a Circularly Polarized Reconfigurable Sub-Reflectarray
No full textAI-Driven Large Language Models for Real-Time Safety Assessment in Human-Cobot Disassembly
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