THE APPLICATION OF FRIEZE GROUPS AND CRYSTALLOGRAPHIC GROUPS IN GENERATING BATAK TOBA ORNAMENT MOTIFS USING A MATLAB GRAPHICAL USER INTERFACE

The Application of Frieze Groups and Crystallographic Groups in Generating Batak Toba Ornament Motifs Using a Matlab Graphical User Interface

Gorga is a carving or sculpture typically found on the exterior of a Toba Batak traditional house.The Batak people use fractal (geometric) dimensions in Batak gorga carvings.In mathematics, repetitive and symmetrical patterns in planes that result from transformations are included in the plane symmetry groups.Ethnomathematics is a cultural approach

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Effects of Hemizygia welwitschii leaf extract fractions on postharvest infestation of maize by Sitophilus zeamais Motsculsky (Coleoptera: Curculionidae)

As part of on-going efforts to use eco-friendly alternatives to chemical pesticides, leaf powder of Hemizygia welwitschii was sequentially extracted in hexane, acetone and methanol.Bioassays were carried out to establish the most active fraction(s) against Sitophilus zeamais in maize.Maize grains (50 g) were treated with concentrations within the r

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