The ability to think spatially and mitigation knowledge is very important in everyday life. Problems involving the field of education Indonesia are less than maximum classroom learning. Geography teachers learn accept effective models Research Objectives Obtain appropriate more learning methods that useful improving use spatial thinking disaster materials. Type: quasi-experimental. research sub...

The accurate solution of quasi-Helmholtz decomposed electric field integral equations (EFIEs) in the presence arbitrary excitations is addressed: Depending on specific excitation, components induced current density do not have same asymptotic scaling frequency, and thus, are solved for with, general, different relative accuracies. In order to ensure scaling, we propose a frequency normalization...