%0 Journal Article
%T Theories, models, and human-machine systems
%J Mathematical modelling
%D 1983
%A Funk, Kenneth H.
%V 4
%N 6
%P 567-587
%X Theories and models play important roles in the development and refinement of knowledge. This paper distinguishes between the two terms and illustrates them. A theory of the operator in human-machine systems, posed in the predicate calculus, is developed. Six axioms address multitask behavior and the response to events. A model of the theory is defined set-theoretically. Issues and implications are briefly explored.<p />
%G 
%I Elsevier Publishing
%@ 0270-0255
%U http://dx.doi.org/10.1016/0270-0255(83)90016-7