Characteristic roots, or eigenvalues, are a useful tool in the study of linear dynamic economic models. The relation between the roots and the model coefficients are expressed in the derivatives of the former with respect to the latter. In general, the roots are complex numbers. This note...

A simple model of “hourglass†problems is presented. For such problems, the benefit of a national policy measure is propagated to all countries through one single world-wide variable.<span style="font-family: NimbusRomNo9L-Regu; font-size: small;"><span style="font-family: NimbusRomNo9L-Regu; font-size: small;">The prime example is the effect of the reduction of CO</span></span><span style="font-family: NimbusRomNo9L-Regu; font-size: xx-small;"><span style="font-family: NimbusRomNo9L-Regu; font-size: xx-small;">2 </span></span><span style="font-family: NimbusRomNo9L-Regu; font-size: small;"><span style="font-family: NimbusRomNo9L-Regu; font-size: small;">emission on the world climate.</span></span><span style="font-family: NimbusRomNo9L-Regu; font-size: small;"><span style="font-family: NimbusRomNo9L-Regu; font-size: small;">Five </span></span><span style="font-family: NimbusRomNo9L-Regu; font-size: small;"><span style="font-family: NimbusRomNo9L-Regu; font-size: small;">optimal...</span></span>

This paper has two aims. First, it describes CPB's contribution on bilateral services trade data to version 7 of the GTAP database. Among others, it uses reliability indices to determine the quality of the data reported by exporting and importing countries. Second, this paper discusses briefly...

This memorandum presents some basic equalities and inequalities about rates of return in discrete time, without auto-correlation. The arithmetic and geometric means are discussed. Estimation of the expected payout and the median payout is discussed, including maximum likelihood estimation.

This paper presents some suggestions for the specification of dynamic models. These suggestions are based on the supposed continuous-time nature of most economic processes. In particular, the partial adjustment model -or Koyck lag model- is discussed. The refinement of this model is derived...

This paper discusses a widely used discrete-time analog of dynamic continuous-time models. This analog can not be used for the estimation of models with fast adaption to shocks. This has been overlooked in the econometric literature. In the engineering literature this same analogon is...

With the ongoing liberalization and integration of European energy markets and the increasing worries about security of supply, the need for thorough economic analysis of electricity markets is growing. Elmar is a model for the European electricity market, taking into account imperfect...

This report analyses the effects of Depreciation at Will (DAW) on offshore gas production, government budget and employment in the gas industry. The DAW enables firms to accelerate deprecation of investments in platforms and other offshore equipment. The interest advantage due to the postponed...