Document type is the identifier of different account transactions like SA for G/L,AA for Asset Accounting etc.The doc.
The Strange Situation This is a method devised by Ainsworth and Bell to measure the type of attachment that a child has formed. It uses many terms and concepts that you should already be familiar with from earlier work in the topic, e.g. Glasgow Babies and the Love Quiz.
There are two kinds of shifts, gravitational and electric due to the gravitational ( -GmM/r) and electrical potential energy (-e^2/4pi r). The shift is measured by the cos(x) of the angle between the radius of the potential center and the velocity of the object with respect to the center. If the angle is 90 degrees there is no shift or the shift is zero, cos90=0. If the angle is less than 90 degrees the shift is red and the object is moving away from the center. If the angle is greater than 90 degrees the shift is blue and the object is moving towards the center.