An asymptotic test for heteroskedasticity has been developed. The test does not rely on any assumption about heteroskedasticity, and introduces two alternative statistics based on the same idea. Power of these two alternative test statistics has been measured by Monte Carlo simulations. For...

This study examines direct investments of Taiwan firms in China (DIC) and firm performance consequences from industrial perspectives. It is found that a U-shaped relationship exists for electronic firms but an inverted-S-shaped relationship exists for non-electronic firms. The empirical results...

For most of the locations all over Egypt the records of diffuse radiation in whatever scale are non-existent. In case that it exists, the quality of these records is not as good as it should be for most purposes and so an estimate of its values is desirable. To achieve such a task, an artificial...