Abstract: An equivalent solid wall model is proposed for ball grid array shielded air-filled (gap) waveguides. This method allows accurate and simplified finite-element modelling of antennaarray ...

Abstract: The yield of photovoltaic (PV) modules is influenced by various environmental factors, particularly solar irradiance and temperature. However, the measured solar irradiance does not ...

ABSTRACT: Basic numeric competencies in early childhood are found to be good predictors for later mathematical achievement. Therefore, it is of broad interest how specific predictors in early ...