[Tex/LaTex] how to avoid white space between sections

spacing

I have section 1 which is only half a page and section 2 following it. However, 2 started in a new page instead of starting in the bottom half of the previous page. As a result i have section 1 in the top half the page and the bottom page is blank creating a large white space. I need to move section 2 to the previous page.

The code is:

\section{section 1}
……..
…….
\section{section 2}
……

\documentclass{article}

\usepackage{placeins}

\begin{document}



\FloatBarrier\section{Thesis Statement}
his research is intended to explore methods for providing ....
\textbf{Thesis statement}: A framework can be leveraged to improve the channel
performance in a dynamic environment at various types of obstructing objects,
for high frequency mobile network technologies.

\begin{table}[b]
  \centering
  TTT
  \caption{zzz}
\end{table}

\FloatBarrier\section{Anticipated Research Contributions}
This dissertation is guided by the desire to perform the following:
\begin{itemize}
\item ........ 
\end{itemize}
\end{document}

Best Answer

\FloatBarrier flushes any pending floats at that point by issuing a \clearpage which forces the following section head on to a new page. If you want the section headings to always start on the current page then you should not use \FloatBarrier

enter image description here

\documentclass{article}

\usepackage{placeins}

\begin{document}



\FloatBarrier\section{Thesis Statement}
his research is intended to explore methods for providing ....
\textbf{Thesis statement}: A framework can be leveraged to improve the channel
performance in a dynamic environment at various types of obstructing objects,
for high frequency mobile network technologies.

\begin{table}[b]
  \centering
  TTT
  \caption{zzz}
\end{table}

%\FloatBarrier
\section{Anticipated Research Contributions}
This dissertation is guided by the desire to perform the following:
\begin{itemize}
\item ........ 
\end{itemize}
\end{document}
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