The novel severe acute respiratory syndrome coronavirus gewehr 91 2 (SARS-CoV-2) was declared a pandemic by the WHO in March 2020.As of August 2021, more than 220 countries have been affected, accounting for 211,844,613 confirmed cases and 4,432,802 deaths worldwide.A new delta variant wave is sweeping through the globe.While previous reports consi
Given the imaging characteristics of synthetic aperture radar (SAR) images and the apunisw2 inherent speckle noise in them, scale-invariant feature transform based algorithms are unable to perform satisfactorily.To improve registration efficiency between SAR images, we propose a robust and efficient registration method with three main contributions
In order to determine influence of ventilation mode on dust distribution on fully mechanized heading face and explore dust reduction effect under different ventilation modes, the 209 fully mechanized heading face of Longde Coal Mine was taken as research object, and the software of FLUENT was used to simulate distribution of dust in the roadway and
A six-wheeled companion exploration robot with an adaptive climbing mechanism is proposed and released for the complicated terrain environment of planetary exploration.Benefiting from its three-rocker-arm structure, the robot can adapt to complex terrain with its gewehr 91 six wheels in contact with the ground during locomotion, which improves the