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Journal Article
Changes in inventory management and the business cycle
Journal Article
Another soft inventory landing?
Working Paper
A state space forecasting model with fiscal and monetary control
In this paper we model the U.S. economy parsimoniously in an a theoretic state space representation. We use monthly data for thirteen macroeconomic variables. We treat the federal deficit as a proxy for fiscal policy and the fed funds rate as a proxy for monetary policy and use each of them as control (exogenous) variables, and designate the rest as state variables. The output (measured) variable is the growth rate of quarterly real GDP which we interpolate to obtain a monthly equivalent. We specify a linear relation between state variables and implicitly allow for time variation of the ...
Working Paper
Financial intermediation and economic growth in southern Africa
The role of the financial sector in stimulating economic growth has been debated in the economic profession for decades. The prevailing view is that financial intermediaries reduce the transactions costs of channeling funds from savers to entrepreneurs by reducing information asymmetries between lenders and borrowers, there by stimulating investment and growth. Inflation, on the other hand, increases uncertainty and has a negative impact on investment and reduces growth. This paper tests these two hypotheses empirically using a pooled time series for a cross-section of countries in the ...
Working Paper
Seasonal production smoothing
Empirical tests of the production-smoothing hypothesis have yielded mixed results. In this paper, Donald Allen looks for, and finds evidence of, seasonal production smoothing in 15 out of 25 manufacturing series and 8 out of 10 retail series, using detrended seasonally unadjusted data. The equivalent test using seasonally adjusted data were negative for all 35 series. The results suggest that seasonally adjusted data obscure short-term production-smoothing.
Working Paper
Income inequality and minimum consumption: implications for growth
We propose a model that recognizes hierarchical goods and income inequality among households. The model demonstrates that growth is impacted not by inequality per se, but "absolute" income distribution or the level of poverty underlying the income distribution. Specifically, when a large fraction of the population is below the threshold income necessary for subsistence, aggregate consumption is depressed. In low-income countries, high inequality of income retards consumption growth, whereas in high-income countries inequality may be neutral for growth. Cross-country regressions indicate a ...
Working Paper
Trade, growth and capital: a case study of Jamaica
This is the first of two articles on the dynamics of the Jamaican economy over the last two and a half decades. It compares the overall macroeconomy of Jamaica in the areas of output, fiscal and monetary policy, capital formation and trade to that of Singapore and South Korea. The conclusion from the aggregate data is that government spending in the second half of the 1970?s and the first half of the 1980?s may have had a significant role in the inflationary episodes and reduced capital formation during this period. The second article will delve deeper into the details of the fiscal and ...
Working Paper
Aggregate dynamics of lumpy agents
This paper identifies the criteria for dynamic synchronization of the movement of agents who make intermittent adjustment to inventory stocks, leading to "harmonic resonance" rather than cancellation. I use a discrete Markov process model of (S,s) inventory adjustment to establish a theoretical framework for the aggregate dynamics and use simulations to demonstrate the distribution effects of a discrete model of lumpy behavior. The paper identifies circumstances that lead to increased skewness of the distribution of agents over the inventory interval. This has application in financial, ...
Working Paper
Forecasting with an adaptive control algorithm
We construct a parsimonious model of the U.S. macro economy using a state space representation and recursive estimation. At the core of the estimation procedure is a prediction/correction algorithm based on a recursive least squares estimation with exponential forgetting. The algorithm is a Kalman filter-type update method which minimizes the sum of discounted squared errors. This method reduces the contribution of past errors in the estimate of the current period coefficients and thereby adapts to potential time variation of parameters. The root mean square errors of out-of-sample forecast ...
Working Paper
Filtering permanent cycles with complex unit roots
Separating cyclical movement from trend growth at seasonal and business cycle frequencies is important to macroeconomic research. At business cycle frequencies, time trends, first differences and the more recent Hodrick-Prescott (HP) filter are used to separate trends from cycles. At seasonal frequencies, ad-hoc methods like the Census Bureau's X-11 seasonal filter are applied. This paper reviews the criteria for permanent cycles in systems characterized by difference equations and looks at the effect of filtering data which exhibit permanent cyclicality. Second order moving averages with ...