IFs is heavily data-based and also deeply rooted in theory. It represents major agent-classes (households, governments, firms) interacting in a variety of global structures (demographic, economic, social, and environmental). The system draws upon standard approaches to modeling specific issue areas whenever possible, extending those as necessary and integrating them across issue areas.
The menu-drive interface of the International Futures software system allows display of results from the base case and from alternative scenarios over time horizons from 2000 up to 2100. It provides tables, standard graphical formats, and a basic Geographic Information System (GIS) or mapping capability. It also provides specialized display formats for age-cohort demographic structures and social accounting matrices.
The system facilitates scenario development via a scenario-tree that simplifies changes in framing assumptions and agent-class interventions. Scenarios can be saved for development and refinement over time. Standard framing scenarios, such as those from the United Nations Environment Programme's GEO 3/4 are available.
The modeling system also provides access to an extensive database for longitudinal and cross-sectional analysis. Insofar as possible, data represent 182 countries since 1960. In addition to providing a basis for developing formulations within the model, the database facilitates comparison of data with "historic forecasts" over the 1960-2000 period.
Dr. Hughes has consulted for the governments of Germany, Iran, Egypt, and the U.S, as well as for the European Union and the United Nations Environment Programme. He has taught in Costa Rica and China. He has written The Domestic Context of American Foreign Policy (Freeman 1978), World Modeling (Lexington 1980), World Futures (Johns Hopkins 1985), Disarmament and Development (Prentice-Hall 1990), Continuity and Change in World Politics (Prentice-Hall 1991, 1994, 1997, 2000), International Futures (Westview 1993, 1996, 1999), Exploring and Shaping International Futures (Paradigm 2006) as well as numerous articles.