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).
The UTM Grid. The best known use of the transverse Mercator projection is the specialized form called Universal Transverse Mercator (UTM) projection system. The UTM defines a grid covering the world between parallels 84Â°N and 80Â°S. The grid is divided in sixty narrow zones, each centered on a meridian.