Let {Xn}, {Yn} be Markov process on k, satisfying Xn+1 = T1(Xn)+Zn, Yn+1 = T2(Yn)+Zn, where {Zn} are i.i.d random variables. Let [mu]X resp. [mu]Y be the stationary distributions of {Xn}resp. {Yn}. We introduce an order relation for probabilities measuring the degree of concentration around zero...

After five years' experience with electronic data processing at the University of Bochum Library it is now possible to derive some conclusions as to its practicability. The automation stage reached so far includes automation facilities with regard to circulation and alphabetic cataloguing...