In this paper we address the alignment of historical and present-day aerial photographs. Historical images refer to regions bombed during the second world war. In this regions the risk of unexploded bombs is still high, especially where the bombing were more frequent. The alignment is required to fill-in an unexploded bombs risk map. The task is challenging because a lot of features in the hist...

Collaborating with People Like Me: Ethnic Coauthorship within the United States Author(s): Richard B. Freeman and Wei Huang Source: Journal of Labor Economics, Vol. 33, No. S1, US High-Skilled Immigration in the Global Economy (Part 2, July 2015), pp. S289-S318 Published by: The University of Chicago Press on behalf of the Society of Labor Economists and the NORC at the University of Chicago St...

Opinions expressed in the paper are those of the authors and do not necessarily reflect the view of the Federal Reserve Board or NORC.

Earnings, Rents, and Competition in the Airline Labor Market Author(s): Barry T. Hirsch and David A. Macpherson Reviewed work(s): Source: Journal of Labor Economics, Vol. 18, No. 1 (January 2000), pp. 125-155 Published by: The University of Chicago Press on behalf of the Society of Labor Economists and the NORC at the University of Chicago Stable URL: http://www.jstor.org/stable/10.1086/209953 ...