In this paper, we develop methods of the determination of the rank of random matrix. Using the matrix perturbation theory to construct or find a suitable bases of the kernel (null space) of the matrix and to determine the limiting distribution of the estimator of the smallest singular values. We...

This paper develops a new test for speculative bubbles, which is applied to data for the Japanese yen, the German mark and the Canadian dollar exchange rates from 1977 to 1991. The test assumes that bubbles display aparticular kind of regime-switching behaviour, which is shown to imply...

This exercice provides all eigenvalues and eigenvectors of the autoregressive matrix found in classical recursive least square theory.

There are both positive and negative aspects to liberalisation policies. Liberalisation policies are no less important than any other kind of economic policies, and so it can only be healthy that what was formerly an obscure and technocratic process has moved to centre-stage politically....

The significance of stability of P.C.I. (Price consumer index) is reported in the situation of economy in which the price consumer index does not present tendencies of important change so much to inflation,- as down,- deflation. This is also the aim of E.E. (European Union), to maintain in a...

This paper establishes a link between a countries economic performance as measured by Gross National Product (GNP) and a compound measure of Transparency, Corruption Perceptions Index (CPI), and (TI 2002). CPI is a measurement that should provide an indication as to a countries reputation in the...

Modelling spot price behavior plays a key role in the electric- ity market, since this is the breeding engine for the activity in the corre- sponding forward and futures market: developers and generators (as well as traders) need to know how electricity prices behave, as their profitabil- ity...