Edward Louis Ullman (1912 – 1976), son of classical scholar

Berthold Ullman Berthold Louis Ullman (August 18, 1882 in Chicago, Illinois – June 26, 1965 in Vatican City) was an American Classical scholar. Ullman was born in Chicago to Louis Ullman and Eleanora Fried. He was educated at the University of Chicago (A.B. 1903 ...

, was trained as a geographer at

University of Chicago The University of Chicago (UChicago, Chicago, U of C, or UChi) is a private university, private research university in Chicago, Illinois. Its main campus is located in Chicago's Hyde Park, Chicago, Hyde Park neighborhood. The University of Chic ...

where he was influenced by the urban and economic emphasis in social science. He was an urban geographer, transportation researcher and regional development specialist and became the champion of applied geography. His study and dissertation on the economic aspects of Mobile, Ullman began a career of transit studies. He was the

Office of Strategic Services The Office of Strategic Services (OSS) was the intelligence agency of the United States during World War II. The OSS was formed as an agency of the Joint Chiefs of Staff (JCS) to coordinate espionage activities behind enemy lines for all bran ...

transportation specialist in World War II. After the war he served as a lieutenant in the United States Navy Reserve and was an economist for the

United States Maritime Commission The United States Maritime Commission (MARCOM) was an independent executive agency of the U.S. federal government that was created by the Merchant Marine Act of 1936, which was passed by Congress on June 29, 1936, and was abolished on May 24, 195 ...

. He also did research for the Joint Chiefs of Staff in the Pentagon and the State Department. In 1951 he began his academic work at the Department of Geography, University of Washington and was a Fulbright research professor at the

Sapienza University of Rome The Sapienza University of Rome ( it, Sapienza – Università di Roma), also called simply Sapienza or the University of Rome, and formally the Università degli Studi di Roma "La Sapienza", is a public research university located in Rome, Ita ...

in 1956-1957. He did academic work in Germany and Israel. The

Nuclear Regulatory Commission The Nuclear Regulatory Commission (NRC) is an independent agency of the United States government tasked with protecting public health and safety related to nuclear energy. Established by the Energy Reorganization Act of 1974, the NRC began oper ...

and

Amtrak The National Railroad Passenger Corporation, doing business as Amtrak () , is the national passenger railroad company of the United States. It operates inter-city rail service in 46 of the 48 contiguous U.S. States and nine cities in Canada ...

utilized his services in their formative years.Who's Who is America. 1976-1977. v. 2, p 3197. He proposed that

trade Trade involves the transfer of goods and services from one person or entity to another, often in exchange for money. Economists refer to a system or network that allows trade as a market. An early form of trade, barter, saw the direct exch ...

was an interaction based on three phenomena: '' complementarity'', '' intervening opportunities'', and '' transferability of commodities''. The level of interaction can be measured by the ''Gravity model'' of trade:

I_ = \frac

Where: *I: Level of interaction between i,j. alternatively, quantity of trade between i,j. *P_i = population of i *D_i,j = distance separating i,j *β = impedance factor

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University of Washington
American geographers 1912 births 1976 deaths University of Washington faculty Scientists from Chicago Urban geographers Regional scientists 20th-century geographers University of Chicago alumni {{Geographer-stub

See also

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