Theil, Basmann, and Sargan are often credited with the development of the two-stage least squares (TSLS) estimator of the coefficients of one structural equation in a simultaneous equations model. However, Anderson and Rubin had earlier derived the asymptotic distribution of the limited information maximum likelihood (LIML) estimator by finding the asymptotic distribution of what is essentially...

from the opening article in Die medicinische Reform: "Die Arzte sind die naturlichen Anwalte der Armen und die sociale Frage fallt zu einem erheblichen Theil in ihre Jurisdiction." The continued interest of the issues addressed in Virchow's weekly is shown by the present photomechanical reproduction from East Germany. It comes not many years after a West German edition (Georg Olms Verlag, Hilde...

from the opening article in Die medicinische Reform: "Die Arzte sind die naturlichen Anwalte der Armen und die sociale Frage fallt zu einem erheblichen Theil in ihre Jurisdiction." The continued interest of the issues addressed in Virchow's weekly is shown by the present photomechanical reproduction from East Germany. It comes not many years after a West German edition (Georg Olms Verlag, Hilde...

As a versatile investment tool in energy markets for speculators and hedgers, the Goldman Sachs Commodity Index (GSCI) futures are quite well known. Therefore, this paper proposes a hybrid model incorporating ARCH family models and ANN model to forecast GSCI futures price. Empirical results show that the hybrid ARCH(1)-M-ANN model is superior to ARIMA, ARCH(1),GARCH(1,1), EGARCH(1,1) and ARIMA-...

The German Economy is not only affected by the Unification of Germany but by a significant influx of immigrants from abroad and huge migration from East to West Germany around the date of unification. Data from the German Socio-Economic Panel Study (GSOEP) allows to disentangle those effects by decomposition of the Theil I (0)-Index of inequality. In addition, the paper offers insights in the t...

Theil-Sen regression analysis is the most preferred method in non-parametric analysis. In method, calculations are made with median parameter. this study, it was proposed to calculate trimean parameter instead of way, effects outliers data on model fully reflected. applications one real-life and two simulation data, results obtained use were more successful. It recommended structures an excess ...