Pervasive developmental disorders: Types list. The list of types of Pervasive developmental disorders mentioned in various sources includes: 1  Autism. 2  Asperger syndrome. 3  Childhood disintegrative disorder. 4  Rett's syndrome. 5  Pervasive developmental disorder not otherwise specified (PDDNOS) - also called atypical autism.
Mercator Projection. The Mercator projection is a map projection that was widely used for navigation since loxodromes are straight lines (although great circles are curved). The following equations place the x-axis of the projection on the equator and the y-axis at longitude, where is the longitude and is the latitude. (1). (2).
A modern rendering by John Snyder of the double-cordiform projection used for Mercator's 1538 world map. Reduced slightly from Snyder, Flattening the Earth, 37, fig. 1.27. Mercatorâs next publication was a detailed 34 by 46 inch (87 by 117 cm) map of Flanders, printed as four sheets in 1540. complete history of the Mercator projection, it includes the down-and-dirty details of the flap that Arno Peters created with his misguided egotism and fringe ideas in the cartographic world.â¦This book might accomplish the impossible: actually get the interested layman to understand the basics of map projections.