[191] The distribution of the first digit in polynomials with positive integer coefficients

[192] Application of Secondary fitting to Grey forecasting model in the development tendency predication of Yellow River's water quality

[193] Revegetation plan for the Loess Plateau

[194] On a class of Discrete Maximum Value Problem

[195] Generalization of an Asymptotic Formula for the Smarandache kn-digital Sequence