The eccentricity of a vertex is the maximum distance from it to another vertex, and the average eccentricity of a graph is the mean eccentricity of a vertex. In this paper we introduce average edge and average vertex-edge mean eccentricities of a graph. Moreover, relations among these eccentricities for trees are provided as well as formulas for line graphs and cartesian product of graphs. In t...

Samenvatting Inleiding Voor suïcidepreventie is het van belang om groepen met een verhoogd risico op suïcide zo goed mogelijk te identificeren. Tot nog toe er weinig bekend over interacties meerdere risicofactoren. Machine learning-methoden bieden nieuwe mogelijkheden voor flexibel, datagedreven, hypothesevrij en robuust onderzoek naar de risicofactoren suïcide. Methode In dit gebruikgemaakt mi...

In this paper the authors actualize need for development of moral qualities and feelings among students with signs giftedness, which encourage them to overcome difficulties, solve educational problems various designs. The paradigm in organization an individual route giftedness is basis constructive subjective interaction. Namely, helps each student build his or her own route. purposefulness sys...