1. Three Essays on Non-stationary Time Series Open Access Author: Li, Xiaoye Title: Three Essays on Non-stationary Time Series Graduate Program: Statistics Keywords: Modulated StationarySelf NormalizationChange-point TestLong-run VarianceAutocovarianceTime-varying exogenous AR modelSieve-wild Bootstrap File: Download phdsample2_copy.pdf Committee Members: Zhibiao Zhao, Dissertation Advisor/Co-AdvisorRunze Li, Committee Chair/Co-ChairFuqing Zhang, Committee MemberJingzhi Huang, Special Member