\usepackage{newtxtext,newtxmath}
\usepackage{etoolbox}
\newcommand{\headlinestyle}{\itshape\huge}
\newcommand{\bylinestyle}{\scshape\Large}
\patchcmd{\headline}{#1}{\headlinestyle #1}{}{}
\patchcmd{\byline}{#1}{\bylinestyle #1}{}{}

\newcommand{\showInlineImage}[2]
{
$
\begin{array}{c}
    \resizebox{0.8\columnwidth}{!}{\includegraphics{#1}} \\
    $#2$
\end{array}
$
}


\newcommand{\showOneWriter}[2]
{
$
\hfill
\begin{array}{c}
    \begin{tikzpicture}
    \clip (0,0)  circle (0.2\columnwidth) ;
    \node[anchor=center] at (0,0) {\includegraphics[width=0.4\columnwidth]{#1}}; 
    \end{tikzpicture} \\
     $#2$ 
\end{array}
\hfill
$
}

\newcommand{\showTwoWriters}[4]
{
$
\begin{array}{cc}
    \begin{tikzpicture}
    \clip (0,0)  circle (0.2\columnwidth) ;
    \node[anchor=center] at (0,0) {\includegraphics[width=0.4\columnwidth]{#1}}; 
    \end{tikzpicture}
    &
    \begin{tikzpicture}
    \clip (0,0)  circle (0.2\columnwidth) ;
    \node[anchor=center] at (0,0) {\includegraphics[width=0.4\columnwidth]{#3}}; 
    \end{tikzpicture} \\
    $#2$ & $#4$
\end{array}
$
}