A sinkhole, also known as a cenote, sink, sink-hole, shakehole, swallet, swallow hole, or doline, is a depression or hole in the ground caused by some form of collapse of the surface layer. Most are caused by karst processesâfor example, the chemical dissolution of carbonate rocks or suffosion processes. Sinkholes vary in size from 1 to 600 m both in diameter and depth, and vary in form from soil-lined bowls to bedrock-edged chasms. Sinkholes may form gradually or suddenly, and are found ...
According to the Perceived Service Quality model (Figure 1), the quality of a service, as perceived by the customer, is the result of a comparison between the expectations of the customer and his or her real-life experiences.
Products and services are two closely aligned concepts, and, in fact, most products have an element of service in them. For example, a car buyer now buys a comprehensive bundle of service benefits, in addition to the tangible components of the car1. However, there is a distinct difference between them and it is important to establish some working definitions. One way to think of them is from the clientsâ point of view.