Here are entered works on computer-based simulation of systems and processes, involving the formulation of a mathematical model, its conversion into a computer program, and execution of experiments with the computerized model for the understanding, evaluation, or design modification of the system or process of interest. --subdivision Computer simulation under topical headings, e.g. Psychology--Computer simulation
Here are entered works on the representation of the operation of processes or systems in mathematical terms. --subdivision Mathematical models under topical headings, e.g. Construction industry--Mathematical models
Here are entered works which deal collectively with all modern living languages. --names of particular modern, living languages or groups of languages, e.g. Indo-European languages, African languages, Oriental languages; and subdivision Languages under names of continents, countries, cities, etc., e.g. Europe--Languages; Africa--Languages; Asia--Languages