Expansion Tank. An expansion tank (aka a recovery tank) is fit to sealed radiator. It either has no filler neck or it is sealed with a blanking cap which does not react to or produce pressure. It simply seals the rad aside from the vent and hose to the expansion tank.
Natural Environment Teaching. Natural Environment Teaching (NET) is utilizing principles of Applied Behavior Analysis to teach in the natural environment, âthe real worldâ. Because children with autism are not typically motivated to learn new things, Natural Environment Teaching can be particularly necessary and particularly difficult.
A natural experiment is an empirical study in which individuals (or clusters of individuals) exposed to the experimental and control conditions are determined by nature or by other factors outside the control of the investigators, yet the process governing the exposures arguably resembles random assignment.