\BOOKMARK [1][-]{section.1}{Introduction}{}% 1
\BOOKMARK [1][-]{section.2}{Type 1}{}% 2
\BOOKMARK [1][-]{section.3}{Type 2}{}% 3
\BOOKMARK [1][-]{section.4}{Type 3}{}% 4
\BOOKMARK [1][-]{section.5}{Type 4}{}% 5
\BOOKMARK [1][-]{section.6}{Type 5}{}% 6
\BOOKMARK [1][-]{section.7}{Acknowledgment}{}% 7