No abstract

The classical approach to market behavioral analysis rarely uses data provided by the transitional, or switching, habits of the consumer. In this article, the authors have taken types of laundry powders purchased by a housewife to define the state space of a Markov chain. Using this model future purchase behavior is predicted, and statistical inferences on the switching habits are made.

No abstract

Rats actively sensitised to bovine serum albumin (BSA) in Freund’s complete adjuvant were challenged by intraperitoneal injection of BSA. By washing out the peritoneal cavities at different times it was possible to divide the changes that occurred into two phases. The first was characterised by the release of histamine and slow reacting substance of anaphylaxis (SRS-A) with an associated extravasation of plasma proteins. The second phase was characterised by an increase in neutrophilic polymorphonuclear cells in the peritoneal cavity. Extracellular enzyme activities were also investigated. The kinetics of these events were studied and are discussed in terms of the possible mechanisms involved.

No abstract