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 ...

In this paper, we propose a simple nonparametric test for testing the null hypothesis of constant coefficients against nonparametric smooth coefficients in a semiparametric varying coefficient model ...

Current often is derived from the voltage drop measured across a shunt of known value. However, as the paper states, “It is common practice for current shunts to be calibrated at a single current ...