The analysis influence of firm size, structure of assets, and profitability to capital structure on basic and chemical industry manufacturing companies listed in Indonesia stock exchange period 2011-2015 = Analisis pengaruh ukuran perusahaan, struktur aktiva, dan profitabilitas terhadap struktur modal pada perusahaan manufaktur sektor industri dasar dan kimia yang terdaftar di bursa efek Indonesia periode 2011-2015