We have previously reported that serial truncation of the Gag p9 protein of equine infectious anemia virus (EIAV) revealed a progressive loss in replication phenotypes in transfected cells, such that a proviral mutant (E32) expressing the N-terminal 31 amino acids of p9 produced infectious virus particles similarly to parental provirus, while a proviral mutant (K30) with two fewer amino acids p...

The standard linear technique of impulse response function analysis is extended to the nonlinear case by de"ning a generalized impulse response function. Measures of persistence and asymmetry in response are constructed for a wide class of time series. ( 2000 Elsevier Science B.V. All rights reserved. JEL classixcation: C22; C51; C52; E32

The Great Recession seems to be creating a New Interventionist Economics characterized by bubbles, radical uncertainty, animal spirits, complexity dynamics, and extra-market control. When placed in that order, these characteristic create the acronym BRACE. I review some evidence and literature pointing to BRACE economics and briefly suggest some avenues to challenge the new interventionists. JE...

This paper uses a measure of skill mismatch to separate wage flexibility from confounding variation in wages driven by differences job quality over the business cycle. I first show that high cyclicality switchers' goes beyond cyclical movements mismatch. Then uncover large across distribution. Among incumbent workers, are acyclical good matches but procyclical poor matches, particular for overq...

Uncertainty about the future rises in recessions. But is uncertainty a source of business cycles or an endogenous response to them, and does type matter? We propose novel SVAR identification strategy address these questions via inequality constraints on structural shocks. find that sharply higher macroeconomic recessions often output shocks, while financial markets likely fluctuations. (JEL D81...

I analyze an extension of the New Keynesian model that features overlapping generations finitely lived agents and (stochastic) transitions to inactivity. In contrast with standard model, proposed framework allows for existence rational expectations equilibria asset price bubbles. study conditions under which bubble-driven fluctuations may emerge type monetary policy rules prevent them. conclude...

In this paper we develop the first search-theoretic monetary model of a two-country global economy. We show the connection between deep monetary frictions (i.e. search and matching frictions), capital holdup externalities, and the realization of an endogenous departure from the “excess smoothness” problem in the real exchange rate found in standard models. Using this alternative monetary model,...

We estimate the dynamic stochastic general equilibrium model of Christiano, Eichenbaum, and Evans (2005) on United Kingdom data. Our estimates suggest that price stickiness is a more important source of nominal rigidity in the U.K. than wage stickiness. Our estimates of parameters governing investment behavior are only well behaved when post-1979 observations are included, which reflects govern...