The quasi-linear fuzzy modeling of Filev (1991) is used to estimate the relationship between the number of managers and employees in a firm. The results form the basis for the classification of firms into small and large businesses. Application to a data of Australian firms shows an evolution...

The objective of this paper is to determine the cause of queues in hair dressing salons, the average time a customer spends in the salon as a result of the queue, the applicability of a mathematical model (Queuing Models) for use in the management of waiting line problems in hair-dressing salons...