THE UNFINISHED BUSINESS OF DIPLOMACY

International Relations/Trade,

FOREIGN AID: A STRATEGY IN THE COLD WAR

International Relations/Trade,

"Ribbon of Steel and Concrete:" A Cultural Biography of the Buffalo Skyway (1955)

The Buffalo Skyway, a mile long and 110 feet high, opened in 1955 in an atmosphere of triumph and celebration, city planners certain that the enormous structure would invigorate the area's economy by eliminating troublesome rail and automobile bottlenecks between the city's downtown core and lakeshore plants and factories to the southwest. Today, the bridge is the whipping boy for politicians and regionalists, who view the structure as a concrete dinosaur, astride waterfront land that might otherwise be productively developed, ala Baltimore. This essay examines the cultural forces that produced the Skyway and many similar structures of the era. It contextualizes Buffalo's high-level bridge not just as an instrument of efficiency and commercial renewal, but as an icon of size and power, speed and mobility, movement and flight--a piece of 'structural art' in the mode of biomorphic, vital forms modernism, built and egineered for those who loved to drive, in the golden age of the American automobile

Phase transition of the nucleon-antinucleon plasma in a relativistic mean-field theory

Studying Walecka's mean-field theory we find that one can reproduce the observed binding energy and density of nuclear matter within experimental precision in an area characterized by a line in the coupling-constant plane. A part of this line defines systems which exhibit a phase transition around Tc~200 MeV for zero baryon density. The rest corresponds to such systems where the phase transition is absent; in that case a peak appears in the specific heat around T~200 MeV. We interpret these results as indicating that the hadron phase of nuclear matter alone indicates the occurrence of an abrupt change in the bulk properties around ρV~0 and T~200 MeV

Kinetic energy flow in Nb(400 A MeV) + Nb: evidence for hydrodynamic compression of nuclear matter

A kinetic-energy—flow analysis of multiplicity-selected collisions of 93Nb(Elab=400A MeV)+93Nb is performed on the basis of the nuclear fluid dynamical model. The effects of finite particle numbers on the flow tensor are explicitly taken into account. Strong sidewards peaks are predicted in dN/dcosθF, the distribution of event by event flow angles. This is in qualitative agreement with recent data from the "Plastic Ball" electronic detection system. Cascade simulations fail to reproduce the data