We consider the problem of planning shortest paths for a tethered robot with a finite length tether in a 2D environment with polygonal obstacles. We present an algorithm that runs in time O((kl +l)2rL4) and finds the shortest path or correctly determines that none exists that obeys the constraints;here n is the numberobstaclevertices,and kl is the numberloops in the initial configurationof the ...

Urinary bladder rhabdomyosarcoma from a 9-month-old female Labrador retriever dog is described. Grossly reddish black multiple friable multinodular masses filled the lumen of the urinary bladder. Histologically, the masses consisted of round, fusiform and polygonal cells with various consistencies. There were also some strap-like cells with chained nuclei and cross-striations. It was diagnosed ...

We explore the effects of geometry on thermal conductivity (?) silicon and germanium nanowires, with lengths between 10–120 nm diameters up to 5–6 nm. To this end we perform molecular dynamics simulations LAMMPS software, using Tersoff interatomic potentials. consider nanowires polygonal cross section discuss effect transverse conductivity. also tubular (hollow) core/shell combinations Si/Ge Ge...

We perform large-scale quasi-continuum simulations to determine the stable cross-sectional configurations of free-standing multi-walled carbon nanotubes (MWCNTs). We show that at an inter-wall spacing larger than the equilibrium distance set by the inter-wall van der Waals (vdW) interactions, the initial circular cross-sections of the MWCNTs are transformed into symmetric polygonal shapes or as...

OBJECTIVE To apply a fully automated method to quantify the 3D structure of the bony nasolacrimal canal (NLC) from CT scans whereby the size and main morphometric characteristics of the canal can be determined. DESIGN Cross-sectional study. SUBJECTS 36 eyes of 18 healthy individuals. METHODS Using software designed to detect the boundaries of the NLC on CT images, 36 NLC reconstructions w...