Separating seasonal components from other sources of economic fluctuations is crucial for both economic modeling and policy making. Practitioners treat seasonality as noise to be removed before estimating models and tend to apply deseasonalizing methods i

This paper presents the idea that retail trade stories might cluster with their competitors to pool marketing expenses and thereby increase their individual visibility among consumers. In a model which presumes such a marketing technology we derive some new comparative statics results. In a...

This paper uses imperfect competition as a basis for modelling the export price for an aggregated commodity produced by the Norwegian private mainland economy. The long run solution is analysed using a cointegration technique. The dynamics are modelled according to two different approaches; a...

The formation of export prices is an area in which the linear quadratic adjustment cost (LQAC) model under rational expectations may be relevant in practice. This paper evaluates the empirical performance of the LQAC-model using Norwegian data and a new testing procedure suggested by Johansen...

Numerous empirical studies have shown evidence of nonlinearities in financial time series, which can be of both a deterministic and a stochastic nature. Chaos is an example of the former, and heteroscedasticity in the conditional variance an example of the latter. We apply a test, the BDS test,...