Many important economic problems require measures of physical and R&D capital. Except for some recent studies, there have been relatively few contributions in the literature that provide econometric estimates for the depreciation rates of physical and R&D capital. One reason for the relative...

In this contribution a nonparametric estimator for the hazard function will be presented for time-discrete survival analysis. The estimator is derived from a likelihood function based upon time-discrete counting processes. With martingale techniques asymptotic properties of the estimator of the...

Reliable estimates of variances and covariances are crucial for portfolio management and risk controlling. This paper investigates alternative methods to estimate time varying variance-covariance matrices: ordinary estimates and exponentially weighted moving averages in comparison to Markov...

Nichtparametrische Verfahren zur Dichte- und Regressionsschätzung setzen die Wahl eines Glättungsparameters voraus. Ein oft verwendetes Verfahren zu dessen Bestimmung ist die Kreuzvalidierung. Die Übertragung dieser Methode auf die Quantiisregression ist Gegenstand der vorliegenden Arbeit. Es...

The focus of this article is the application of the grouped Cox model to the investigation of influence factors of the inclination of guest workers in the Federal Republic of Germany to remigrate. The model on which this is based takes into consideration both the appearance of censored...

In diesem Beitrag werden nichtparametrisclie Schätzer für die Hazardrate zur Analyse des Rückkehrverhaltens von Gastarbeitern in der Bundesrepublik vorgestellt. Als Datengrundlage dient das jährlich erhobene Sozio-ökonomische Panel, DIW, aus dem die Informationen für griechische,...

In der Literatur wurden verschiedene parametrische Modelle zur Analyse der Heteroskedastie in Zeitreihen von Finanzmarktdaten entwickelt. Eine Möglichkeit, die bedingte Volatilität nichtparametrisch zu erfassen, ist die Kernschätzung von bedingten Quantilen. In diesem Aufsatz werden einige...

The paper compares two approaches to the estimation of panel probit models: the Generalized Method of Moments (GMM) and the Simulated Maximum Likelihood (SML) technique. Both have in common that they circumvent multiple integrations of joint density functions without the need to impose...

The problem of selecting bandwidth for nonparametric regression is investigated. The methodology used here is a double-smoothing procedure with data-driven pilot bandwidths. After giving an extension of the asymptotic result of Hardle, Hall and Marron (1992) by transfering the ideas of Jones,...

Discrete choice models and qualitative response models are intimately related. Usually both are based on a logistic specification. In many applications the two approaches have been combined leading to a 'discrete choice model including socio-economic explanatory variables'. The paper desdribes...