In managing their foreign exchange exposure, international investors, including central banks, often compare actual portfolios with hypothetical portfolios that have been calculated using certain assumptions regarding the statistical properties of interest rates and exchange rates. One of these...

In evaluating their foreign exchange exposure, international investors often compare actual portfolios with those calculated under the assumption that the variability of returns on various currency assets is time invariant. This paper uses autoregressive conditional heteroskedastic (ARCH) models...

this study examines the role that sectors play in aggregate convergence of provincial labor productivity across the 67 provinces of turkey during the 1975-1990 period. a markov chain model is applied to characterize the long-run tendencies of productivity both at the aggregate and sectoral...

This study examines convergence in aggregate labor productivity levels, using data on the 67 provinces of Turkey over the period 1975-1990. Markov chains, a nonparametric approach, are applied to characterize the long run tendency of labor productivity. Evidence shows polarization: the...

This paper develops a method for assessing food security information system with respect to its structure, connectedness and performance. The paper illustrates how to set up an operational food security information system, identify its leverage components and pathways of information flow, and...

This study seeks to develop a comprehensive methodology for assessing information system formation and performance. Our conceptual framework incorporates three complementary methods, which constitute the methodology developed. The first method proposes an approach to analyze the effects on the...