This paper proposes an Augmented Dickey—Fuller (ADF) coefficient test for detecting the presence of a unit root in autoregressive moving average (ARMA) models of unknown order. Although the limit ...

This video demonstrates Admet’s ASTM D1894 COF (coefficient of friction) test. ASTM D1894 is a testing standard employed for determining the friction of plastic film and sheeting. Using this test, the ...