The airflow through a harvesting machine is adjusted by calculating a G-factor at a first point on an upper chaffer to determine if it is greater than 1+n, where n represents a desired factor. The process for producing a hydroxyl group containing compound comprises allowing an aqueous solution containing 1 ppb to 500 ppm of an acid catalyst to react with an aliphatic double bond having compound in a molar ratio of water to aliphatic double bond having compound of from 1 to 50, at a reaction temperature of from 200 to 600\xb0 C. This has as an advantage that the amount of temporarily storage capacity required, approximately equals the amount required for forward playback. The output layer is bonded to the input layer or constraint layer and also deforms radially. Each termini are complementary with termini of different types allowing a system which can be opened or act as a hinge. The method for managing customer data includes assigning one or more roles with entities desiring access to customer data, the entities including at least one application.