The Simplified U.S. Model (Preliminary Version) for the IIASA/FAP Global System of Food and Agriculture Models: Domestic Utilization and Prices

The Food and Agriculture Program of the International Institute for Applied Systems Analysis has been developing, as its major task, a global system of national food and agriculture models linked in a general equilibrium framework. The main objective is to analyze, over a 15- to 20-year horizon, the impact of national domestic and trade policies and of international agreements on the distribution of food and hunger in the world and on the pace of development in the LDCs. The United States, as a major exporter of food and feed grains, is a key link in the system. It can, through its aid, trade and domestic food policies, have a major influence, both intentional and unintentional, on the world food situation. Michigan State University (MSU) is collaborating with IIASA/FAP and the USDA in the development of simplified and detailed models of U.S. food and agriculture for linkage in the FAP global system. This working paper presents some rough notes describing the demand side of the preliminary version of the simplified U.S. model. The supply side is based on the domestic supply component of the MSU Ag Model, which has been under development at MSU for several years on a grant from the John Deere Corporation and other contract research support. Detailed documentation of that model is in preparation at MSU; this paper limits its scope to the demand and price components developed for linkage to IIASA's system. The model presented here is preliminary in the sense that a great deal more testing and refinement are necessary in the context of the global system to enhance its usefulness. The major contributors to the simplified U.S. model are Michael Abkin, Donald Mitchell, Eric Wailes and Chris Wolf of MSU, and David Watt of USDA. Dan Kauffman, Tracy Miller and Dave Zeitler have contributed at various stages of data collection and parameter estimation, and others contributing to the MSU Ag Model over the years are too numerous to mention here

The Intermediate United States Food and Agriculture Model of the IIASA/FAP Basic Linked System: Summary Documentation and User's Guide

Understanding the nature and dimensions of the world food problem and the policies available to alleviate it has been the focal point of IIASA's Food and Agriculture Program (FAP) since it began in 1977. National food systems are highly interdependent, and yet the major policy options exist at the national level. Therefore, to explore these options, it is necessary both to develop policy models for national economies and to link them together by trade and capital transfers. Over the years FAP has, with the help of a network of collaborating institutions, developed and linked national policy models of twenty countries, which together account for nearly 80 percent of important agricultural attributes such as area, production, population, exports, imports and so on. The remaining countries are represented by 14 somewhat simpler models of groups of countries. Since the United States is a major actor on the world market, a special food and agriculture model of the United States was developed by the Michigan State University (MSU) and the U.S. Department of Agriculture (USDA) in collaboration with FAP to serve as the basic U.S. model in the IIASA/FAP basic linked system. In this document Mike Abkin provides a summary description of the U.S. intermediate model and guidelines for implementing the model's computer program, as of its August 1984 version, and interpreting its results. It is intended to assist analysts in using this model for policy analysis as a part of the basic linked system. This working paper is one of a series of Working Papers documenting the work that went into developing the various models of FAP's system of linked models

The Basic U.S. Model for the IIASA/FAP Global System of Food and Agriculture Models: Domestic Utilization and Prices

Total utilization of each commodity includes exports, if any, and several components of domestic disappearance. Exports (actually net imports) are determined as a residual of domestic supply over demand in the simultaneous national- international exchange model of IIASA's linkage system consistent with world prices; domestic price, quota and stock policies; and assumed international agreements. Domestic utilization includes seed, losses, feed, nonfood industrial uses, government consumption, stocks and human consumption. Feed demand is discussed elsewhere with the supply side of the model, which is based on Michigan State University's Agriculture model; prices and the other components of demand will be described here

Establishing a Program - Data Library at IIASA

The purpose of this paper is to discuss IIASA's needs for a program/data library, the scope of its holdings, potential contributors and users, basic services and supporting activities, and steps required to establish and staff the library

Korean simulation model advisory service

노트 : Evaluation period: 1 Jan-30 Jun 197