Example of Group F structure, the Klann Organ Company, located in Waynesboro, Virginia. Building occupancy classifications refer to categorizing structures based on their usage and are primarily used for building and fire code enforcement. They are usually defined by model building codes, and vary, somewhat, among them. Often, many of them are subdivided.
In the Annals of the American Academy of Political and Social Science, the leading figure of the public relations industry, Edward Bernays, explains that the very essence of the democratic process is the freedom to persuade and suggest, what he calls the engineering of consent..
Carl Hovland et al. created the Hovland-Yale model which studied the relationship between persuasion and attitude change, the research focused on the communicator, the content of the message and the receiver of the message as they were considered the key features in effective persuasion.