Computer science theory, and the concept of polymorphism in particular, make much use of the concept of function signature.

Management science theory, methods, and tools were infused into marketing, and consumer behavior emerged as an area of study within marketing.

It may also refer to a political or political science theory.

Existing search engines were designed based on traditional library science theories related to retrieval basic facts and simple information through an interface.

Fragments of political science theories were applied in comparative media studies, since transformation processes of media systems are strongly connected to the transformation of political systems.