Rhinoceros is primarily a free form surface modeler that utilizes the NURBS mathematical model. Rhinoceros' application architecture and open SDK makes it modular and enables the user to customize the interface and create custom commands and menus.
Noun. 1. exigency-a pressing or urgent situation; the health-care exigency. crisis-an unstable situation of extreme danger or difficulty; they went bankrupt during the economic crisis.
My take is that the intron/exon structure of eukaryotic DNA is the âancientâ model, and that bacteria âstripped awayâ the introns as a kind of streamlining of process. That is why E. coli can have a generation every 30 minutes and people have a generation every 20 years. By âancientâ I mean that intron/exon goes all the way back to the RNA World.