\documentclass[twoside]{book}
% ==== Remove chapter name from the header in each page
\usepackage{fancyhdr} % For custom headers and footers
\pagestyle{fancy}
% Clear all headers and footers
\fancyhf{}
% Keep page number in the header (optional)
\fancyhead[LE,RO]{\thepage} % Page number on the left for even pages (LE) and right for odd pages (RO)
% To remove chapter name from the header
\fancyhead[LO,RE]{} % Clears left header on odd pages and right header on even pages
%====== REQUIRE Package for title pages
% source: https://tex.stackexchange.com/questions/59460/custom-title-page-in-report-or-book-class
\usepackage{xcolor}
\usepackage{graphicx}
\usepackage[executivepaper,margin=1in, right=1.25in,left=1.25in,top=1.1in,bottom=1.1in]{geometry}
% ======= Other utility packages
\usepackage{layouts}
\usepackage{etoolbox}
\usepackage{booktabs}
\usepackage{authblk}
\usepackage{amsmath,amsfonts,amssymb,amsthm,mathtools,mathrsfs}
\usepackage{cases}
\usepackage{empheq}
\usepackage{enotez}
\usepackage{pdflscape}
\usepackage{natbib}
\usepackage{subcaption}
\usepackage{multirow}
\usepackage{xr}
\usepackage{todonotes}
\usepackage{setspace}
\usepackage{threeparttable}
\usepackage{tikz,tikzscale}
\usetikzlibrary{arrows,calc,automata,patterns,positioning,shapes.geometric,decorations.pathreplacing,decorations.markings}
\usepackage{pgfplots}
\usepgfplotslibrary{groupplots}
\pgfplotsset{width=10cm,compat=1.9}
\usepackage{calrsfs} 
\usepackage{enotez}
\setenotez{backref=true}
\usepackage{enumitem} 
\newcommand{\red}[1]{\textcolor{red}{#1}}
\newcommand{\blue}[1]{\textcolor{blue}{#1}}
\newcommand{\green}[1]{\textcolor{green}{#1}}
\newcommand{\teal}[1]{\textcolor{teal}{#1}}
\theoremstyle{definition}\newtheorem{definition}{Definition}
\newtheorem{theorem}{Theorem}
\newtheorem{corollary}{Corollary}[theorem]
\newtheorem{lemma}[theorem]{Lemma}
\newtheorem{ass}{Assumption}
\theoremstyle{definition}\newtheorem{remark}{Remark}
\theoremstyle{definition}\newtheorem{prop}{Proposition}
\newtheorem{notation}{Notation}
\theoremstyle{definition}\newtheorem{fact}{Fact}
\renewcommand\qedsymbol{$\blacksquare$}
\usepackage{tabularx}
\usepackage{xurl}
\usepackage{hyperref}
\hypersetup{
	colorlinks=true,            
	linkcolor={red!50!black},
	citecolor={blue!50!black},
	urlcolor={blue!80!black}
}
% ========= Subabstract for each chapter
\newenvironment{chapabstract}
{
	\begin{center}%
		\vspace*{1.5cm}
		\Large \bfseries Abstract \vspace{-.5em}\vspace{0pt}
	\end{center}
	\list{}{%
		\setlength{\leftmargin}{5mm}% <---------- CHANGE HERE
		\setlength{\rightmargin}{\leftmargin}%
	}%
	\item\relax
}
{\par}
\makeatother
%============== APPENDICES
\usepackage[titletoc]{appendix}
\author{ authorname }
\begin{document}
% ----------------------------------------------------------------
\begin{titlepage}
	\begin{center}
		% ----------------------------------------------------------------
		\includegraphics[width=0.19\textwidth]{logo.png}\\[5pt]
		{Graduate School of Economics and Management}\\[5pt]
		{TOHOKU UNIVERSITY}\\[5pt]
		
		\vspace{1.5cm}
		{\huge\bfseries Three Essays on \\ Economics Growth\\}
		% ----------------------------------------------------------------
		\vspace{1.5cm}
		{\Large\bfseries author}\\[5pt]
		
		% ----------------------------------------------------------------
		\vspace{2cm}
		{Dissertation  submitted to} \\[5pt]
		\emph{{Faculty of Economics, Tohoku University}}\\[5pt]
		{in fulfillment of the requirements for the of} \\[5pt]
		\textsc{\Large{{Doctor of Philosophy}}} \\[5pt]
		{in Economics} \vspace{0.4cm} \\[2cm]
		\vfill
		
				% List of Professor and Examiners
		\begin{tabular}{l l} 
			\textbf{Supervisor:} & Prof. A \\ 
			\textbf{Referees:} & Prof. B \\
			& Prof. C \\
			& Prof. D
		\end{tabular} 
		
		\vfill
		Submission Date: \today
	\end{center}
\end{titlepage}
% ========= Acknowledgement page
\clearpage
\chapter*{Acknowledgement}
I would like to express my thanks to \dots
% TOC page
\setcounter{tocdepth}{1}
\tableofcontents
% Main chapters
\include{Chapter1.tex}
% Appendices
\begin{appendices}
	\appendixpage
	%\noappendicestocpagenum
	%\addappheadtotoc
	\include{AppendixA.tex}
\end{appendices}
% Reference
\clearpage
\bibliographystyle{apalike}
\bibliography{reference}
	
	
	
	
	
	
	
	
	
	
	
\end{document}