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We thank Sally Burke for helpful editorial comments and Mike McLaughlin for excellent research assistance. The opinions expressed here are solely those of the authors and do not necessarily represent those of the Federal Reserve Abstract This paper uses time-series techniques to examine whether monetary policy had symmetric effects across U.S. states during(More)
and two anonymous referees. We alone are responsible for any remaining errors. The views expressed here are those of the authors and do not necessarily represent the views of the Federal Reserve Bank of Philadelphia or the Federal Reserve System Federal Reserve Bank of Philadelphia Economists, beginning with Alfred Marshall, have studied the significance of(More)
A measurement of the Higgs boson mass is presented based on the combined data samples of the ATLAS and CMS experiments at the CERN LHC in the H→γγ and H→ZZ→4ℓ decay channels. The results are obtained from a simultaneous fit to the reconstructed invariant mass peaks in the two channels and for the two experiments. The measured masses from the individual(More)
Vigdor, for helpful comments and suggestions. The opinions expressed here are solely those of the authors and do not necessarily represent those of the Federal Reserve Bank of Philadelphia or the Federal Reserve System. ABSTRACT In this study we show that during the postwar era, the United States experienced a decline in the share of urban employment(More)
We document several empirical regularities regarding the evolution of urban structure in the largest U.S. metropolitan areas over the period 1980–90. These regularities relate to changes in resident population, employment, occupations, as well as the number and size of establishments in different sections of the metropolitan area. We then propose a theory(More)
The views expressed here are those of the authors and do not necessarily reflect those of the Federal Reserve Bank of Philadelphia or of the Federal Reserve System. 2 ABSTRACT Knowledge Spillovers and the New Economy of Cities Despite much theorizing about the role of geographic concentration of employment in knowledge spillovers, local densities' role in(More)