This paper introduces and describes an alternative clustering approach based on the discrete wavelet transform (DWT) which satisfies requirements that other clustering methods, like discriminative-based clustering and model-based clustering approaches, do not satisfy. The clustering method has...

In this paper we utilise the wavelet transform to analyse the Swedish wind speed data from monitoring centers at different locations throughout Sweden. The long memory structure has been tested by using least squares method. The wavelet variance has been applied for studying the variations at...

A glacial varve chronology from Sweden spanning the 2304–year period from -355 to 1979 A.D was analysed for evidence of climate variability during the last 2000 year. The data was analysed for significant broad band periodicities and narrow band periodicities. By using the F test based...

This paper describes an alternative approach for testing for the existence of trend among time series. The test method has been constructed using wavelet analysis which has the ability of decomposing a time series into low frequencies (trend) and high-frequency (noise) components. Under the...

Quarterly data for the period 1960:1 to 1997:2, conventional tests, a bootstrap simulation approach and a multivariate Rao's F-test have been used to investigate if the causality between government spending and revenue in Finland was changed at the beginning of 1990 due to future plans to create...

This paper introduces two different non-parametric tests for panel unit root based on the wavelet decomposition of time series which may be used in the presence of cross-sectional dependency and an unknown structural break in the data. These tests are compared with the parametric IPS test...

We make use of a natural experiment, the hurricane ‘Gudrun’, and investigate the impact of human interaction on attitudes towards the labor market. Comparing attitudes between one group of Swedish forest owners that had interacted with guest workers, and one that had not, differences in...

This study is about elite sports in Sweden. There are a lot of ways of studying the economic value of elite sports. In this article we use information from population data, club accounting and a questionnaire to get a picture of the economic values of elite sports. Our knowledge from earlier...