"This paper examines the causes of the observed increase in the average duration of unemployment over the past thirty … in the generosity and coverage of unemployment insurance. We find that changes in the composition of the labor force and … institutional changes can only partially account for the longer duration of unemployment. We construct a job search model and …

This paper examines how risk in trading activity can affect the volatility of asset prices. We look for this … normal levels. We investigate how the risks in convergence trading can affect price volatility in a form of positive feedback … that level. -- convergence trading ; interest rate swaps ; swap spread ; repurchase contracts ; trading risk ; volatility …

involving U.S. inflation and GDP growth. Empirical results suggest that the number of change points is larger than previously … estimated in these series and the implied model is similar to a time-varying parameter model with stochastic volatility …