Trend filtering is known as the technique for detecting piecewise linear trends in univariate time series. This extended to setting of compositional data, which are multivariate data where only relative information importance. According this, we formulate problem and present a procedure how efficiently solve it. To show usefulness this method, consider number COVID-19 infections several Europea...

we study the coherent spin-polarized transport through a zigzag-edge graphene flake (zgf), using hubbard model in the nearest neighbor approximation within the framework of the green function’s technique and landauer formalism. the system considered consists of electrode/ (zgf)/electrode, in which the electrodes are chosen to be armchair nanoribbons. the study was performed for two types of ele...