An efficient method for the continuous extraction of subway tunnel cross sections using terrestrial point clouds is proposed.First, the continuous central axis of the tunnel is extracted using a 2D projection of the point cloud and curve fitting using the RANSAC (RANdom SAmple Consensus) algorithm, and the axis is optimized using a global extractio
Nevus sebaceous is known by its association with one or more secondary tumors, but more than three multiple tumors arising from a nevus sebaceous is extremely rare.A 67-year-old female presented with a light brown plaque on the back of her head that contained a dome-shaped Lighters black node and an erosive lesion.Histopathological examination show
Arrangements of genes along chromosomes are a product of evolutionary processes, and we can expect that preferable arrangements will prevail over the span of evolutionary time, often being reflected in the non-random clustering of structurally and/or functionally related genes.Such non-random arrangements can arise by two distinct evolutionary proc
The seismic damage of underground structures has been extensively investigated, and it has been demonstrated Medical Cart that underground structures located at weak interlayer sites are more prone to damage.In this study, a two-story two-span rectangular frame subway station structure is analyzed.A two-dimensional soil-underground structure model