PARM is an acronym for Program Analysis for Resource Management. It is a general-purpose system for preparing feasible schedules for large, complex systems of interdependent activities to support specified objectives subject to resource constraints. The procedure provides for an iterative process alternating between human decision-making and machine computation in which the goal is achievement of a feasible and acceptable program. Feasibility is objectively determined, but acceptability is subjectively determined. No overall optimizing criterion is assumed to be definable; but many optimizing procedures of limited scope are included. The PARM System has been developed by the National Planning Association under contract with the Office of Emergency Planning, Executive Office of the President. The initial implementation of the system -- the Prototype Model -- will be used for analysis and training with respect to national economic recovery following a nuclear war. Adaptations to national economic projections in peacetime and to analyses of the industrial impacts of defense expenditure or of disarmament are contemplated in future development of the system. Applications to economic development planning in other nations of the world are also under consideration. As adapted to economy-wide projections, the PARM System belongs to the same family of statistical-economic techniques as the input-output system of Leontief. However, it is more inclusive in scope and makes more exacting demands for data. Leadtimes are associated with all input requirements factors. In addition to information on requirements per unit of output for an inclusive set of current production activities defining the economy, it incorporates data on initial stocks and capacities, unit requirements for the expansion of capacity, and a variety of data used for the generation of consumer, government and foreign trade final demand from a selected list of highly-aggregated, stipulated variables. In computation the PARM System differs markedly from the pioneering approach of Leontief. An iterative, triangular process of computation is employed in which activities are taken up in turn and various transformations of the demand schedule of each activity may be performed before the impacts of the given activity on other activities are determined. The major transformations are designed to prevent the activity level from exceeding either the available physical capacity or the available trained manpower, on a plant by-plant basis. Other transformations include automatic capacity augmentation when requirements can be met only by capital expansion; limitation of expansion per period to a rate consistent with the plant-by-plant availability of trained manpower and the possibilities of training new employees; application of available stocks to meet requirements; production in advance of need when necessary to smooth the schedule of the activity and minimize investment requirements; transfer of deficits to substitute items; and acceptance of tardy output when late delivery of a requirement is permissible. The system is not restricted to linear homogeneous relationships, as is the usual input-output system, but handles all rational algebraic functions, including functions of two or more variables. The system determines the feasibility of each activity, determines capacity augmentation requirements, and measures the deficits, or indicates unutilized capacity, if any. [ABSTRACT FROM AUTHOR]