\usepackage{pgf-umlsd} % Connection diagrams
\usepackage{graphicx} % Graphics
\usepackage{epstopdf} % Eps graphics
\usepackage{pgf-umlsd} % Connection diagrams
\usepackage{graphicx} % Graphics
\usepackage{epstopdf} % Eps graphics
\patchcmd{\chapter}{plain}{headings}{}{}
\usetikzlibrary{arrows,shadows}
\patchcmd{\chapter}{plain}{headings}{}{}
\usetikzlibrary{arrows,shadows}