Authors
Rafika Andari
Civil Engineering Department, Universitas Andalas, Padang, Indonesia
Electrical Engineering Department, Institut Teknologi Padang, Padang, Indonesia
Nurhamidah Nurhamidah
Civil Engineering Department, Universitas Andalas, Padang, Indonesia
Darwizal Daoed
Civil Engineering Department, Universitas Andalas, Padang, Indonesia
Marzuki Marzuki
Physics Department, Universitas Andalas, Padang, Indonesia
