Coronavirus disease 2019 (COVID-19), caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), a novel coronavirus in humans, has expanded globally over the past year.COVID-19 remains an important subject of intensive research owing to its huge impact on economic and public health globally.Based on historical archives, the first coron
File fragment classification is an essential problem in digital forensics.Although several attempts had been made to solve this challenging problem, a general solution has not been found.In this work, we propose a hierarchical machine-learning-based approach with optimized support vector machines (SVM) as the base classifiers for file fragment clas
ABSTRACT We recently showed that, in the absence of RecA-dependent homologous recombination, the Tnp26 transposase catalyzes cointegrate formation via a conservative reaction between two preexisting IS26, and this is strongly preferred over replicative transposition to a new site.Here, the reverse reaction was investigated by assaying for precise e