Human nose, while being in many cases the only facial feature clearly visible during the head motion, seems to be very undervalued in face tracking technology. This paper shows theoretically and by experiments conducted with ordinary USB cameras that, by properly defining nose – as an extremum of the 3D curvature of the nose surface, nose becomes the most robust feature which can be seen for al...

Tulips are bulbous geophytes with high ornamental value. Species of Tulipa L. distributed along western China to Eastern Europe. Central Asia including Uzbekistan is considered as the hotspot center tulips where over 80 and 34 taxa described. The current work presents morphology species from fresh materials, regional distribution assessment area (AOO) extent (EOO) occurrence ancestor cultivated...