Abstract white paper and vertical horizontal moving lines shapes. Abstract grunge old paper shapes animation, pulsating ink scratches and spots old paper scratches Taxes animation set. Financial ...

The optimal design parameters of a third-order damped filter are simultaneously ... At last, the impacts of different background voltage distortion (BVD) levels and load-side's nonlinearity levels ...

Curriculum-linked learning resources for primary and secondary school teachers and students. Videos, games and interactives covering English, maths, history, science and more!