Rational Method is a rather conservative method. One of the basic assumptions of the rational formula is that the rainfall intensity must be constant for an interval at least equal to the time of concentration. For long duration of rainfall, this assumption may not hold true.
The puzzle piece was first associated with Autism Awareness when it was used within the logo for National Autistic Society in the UK in 1963. The logo of the society was designed by a neurotypical parent of an Autistic child who was a member of th...
Children with autism exhibit significant deficits in imitation (Smith and Bryson 1994) as well as later emerging social behaviors (APA 2000), leading to the proposal that an early deficit in imitation could disrupt the development of intersubjectivity and lead to broader social impairments in autism (Rogers and Pennington 1991).