"The word model is used as a noun, adjective, and verb, and in each instance it has a slightly different connotation. …"

"… All other languages can be translated into the thing-language, but the thing-language cannot be translated into any…"

"A system is more than the sum of its parts; it is an indivisible whole. It loses its essential properties when it is …"

"The less sure managers are of their opinions, the more vigorously they defend them. Managers do not waste their time …"

"In the last two decades we have witnessed the emergence of the "system" as a key concept in scientific research. Syst…"

"The development (rather than the history) of operations research as a science consists of the development of its meth…"

"A great deal of study has been directed to denning 'best decisions,' particularly since the pioneering work of mathem…"

"A problem never exists in isolation; it is surrounded by other problems in space and time. The more of the context of…"

"The extensive literature addressed to the definition or characterization of science is filled with inconsistent point…"

"Scientific models have all these connotations. They are representations of states, objects, and events. They are idea…"