Analisis pengaruh asset tangibility terhadap leverage dan debt maturity di emerging markets : studi empiris pada perusahaan non finansial dan non utilitas di negara Indonesia, Filipina, Malaysia, dan Thailand periode 2002-2011 = Analysis the impact of asset tangibility towards leverage and debt maturity in emerging markets : empirical study on non financial and non utilities firms in Indonesia, Philippines, Malaysia, and Thailand within period of 2002-2011