This paper proposes a semiparametric proportional hazard model for bivariate duration data in the analysis of two-component systems. Examples include the two infection times of the left and the right kidneys of patients and the two retirement times of married couples. As a generalization of the...

The generalised method of moments (GMM) is combined with the nonparametric estimation of the instrument matrix to obtain an easily computable estimator for the panel probit model. It is based on the specification of the conditional mean of the binary dependent variable in each period, and...

This empirical study investigates the process of adjustment of imports to changes in the level of domestic activity (income) and the relative prices in the Gulf Cooperation Council (GCC) Countries. The aim is to provide new estimates if the aggregate demand for imports in these countries over...

We combine micro and macro unemployment duration data to study the effects of the business cycle on the outflow from unemployment. We allow the cycle to affect individual exit probabilities of unemployed workers as well as the composition of the total inflow into unemployment. We estimate the...

We address the issue of how the deregulation of financial markets has affected the monetary transmission mechanism in Norway. By estimating a dynamic system of money, credit, real income and inflation during a period of fundamental structural changes in monetary policy and financial markets we...

A recent addition to the ARCH family of econometric models was introduced by Ding, Granger and Engle (1993) wherein the power term by which the data is transformed was estimated within the model rather than being imposed by the researcher. This paper considers the ability of the Power GARCH...

The use of conditionally heteroscedastic models to model time varying volatility has become commonplace in the empirical finance literature. Ding, Granger and Engle (1993) suggested a model which extends the ARCH class of models to analysing a wider class of power transformations than simply...

Major changes in the Norwegian exchange rate have often coincided with large fluctuations in the price of crude oil. Previous empirical studies have however suggested a weak and ambiguous relation between the oil price and the exchange rate. In contrast to these studies, this paper explores the...

This paper proposes a new kind of asymmetric GARCh where the conditional variance obeys two different regimes with a smooth transition function. In one formulation, the conditional variance reacts differently to negative and positive shocks while in a second formulation, small and big shocks...

An efficient portfolio maximizes the expected utility of future wealth. This paper presents an analysis of the efficiency frontier, formed by a set of efficient portfolios corresponding to a parameterized class of utility functions. First we discuss the estimation of Tan efficient portfolio and...