Railroads in Cuba

Railroads and American Law

Zigzags, Railroads, and Knots in Fullerenes

Two connections between fullerene structures and alternating knots are established. Knots may appear in two ways: from zigzags, i.e., circuits (possibly self-intersecting) of edges running alternately left and right at successive vertices, and from railroads, i.e., circuits (possibly self-intersecting) of edge-sharing hexagonal faces, such that the shared edges occur in opposite pairs. A z-knot...

Railroads and American Economic Growth : A

This paper examines the historical impact of railroads on the American economy, with a focus on quantifying the aggregate impact in the agricultural sector in 1890. Expansion of the railroad network may have affected all counties directly or indirectly — an econometric challenge that arises in many empirical settings. However, the total impact on each county is captured by changes in that count...

Human Rights in Cuba

This Human Rights Watch report assesses the status of human rights in Cuba in 1992. Covers rights violations including poor prison conditions, restrictions on academics and journalists, and long prison terms for dissidents. Argues that the system of control is part of the government’s attempt to maintain power. Canadian Foundation for the Americas. Cubasource. http://www.cubasource.org/index_e....

Planning in Cuba Today