Appendices

Technical Appendix for ``Real Exchange Rate Fluctuations and the Dynamics of Retail Trade Industries on the U.S.-Canada Border'' (with Beverly Lapham). November, 2002.

The purpose of this appendix is twofold. First, we present our procedure for replacing missing or erroneous observations in the County Business Patterns Dataset. Second, we present the GMM estimator we use, based on Blundell and Bond (1998).

Technical Appendix for ``Idiosyncratic Risk and Aggregate Employment Dynamics'' (with Jonas D.M. Fisher). July 2001.

In this technical appendix, we detail the transition rule and quantity calculations for the model of Campbell and Fisher (2004). The notation and terminology matches the working-paper version of the paper but not the published version.

Technical Appendix for ``Aggregate Employment Fluctuations with Microeconomic Asymmetries'' (with Jonas D.M. Fisher). August, 1999.

The purpose of this appendix is threefold. First, we show that the unique optimal employment policy of an establishment facing proportional job creation and destruction costs has the boundary control structure described in the text. Second, we describe the numerical procedures we use to solve for the optimal policy. Finally, we show how to calculate the model's aggregate quantities.

Entry, Exit, Embodied Technology, and Business Cycles: Computational Appendix. March, 1997.

This appendix provides a detailed exposition of the computational method applied to the model of Campbell (1998). Heterogeneity in the production sector of that model implies that its prices and quantities are continuous functions on the real line rather than scalars. The computational method used is an extension of standard log-linearization methods. It uses quadrature approximation of integrals to approximate a system of functional equations with a standard system of vector equations. Similar computational problems arise in other economic models that incorporate heterogeneity, so the methods of this appendix may be of independent interest to other researchers.