Preface

What you are reading is my master thesis. I talked to my supervisor Prof. Dr. R. van der Hout about the subject in 2004, but I did not start really until summer 2005. After a few months of wrestling through all the theory it finally became clear to me. The next thing to do was numerically constructing the behaviour predicted in the theory, and after that writing this report. Most of all I want to thank my supervisor Prof. Dr. R van der Hout for all of his support. We almost met weekly and discussed the progress. I want to thank Dr. J.B. van den Berg for letting me use figures 2.5 and 2.6. I want to thank Peter Bruin for helping me including a flipbook in this thesis of the differential equation I studied. I also want to thank my parents for their support during my study. Finally I want to thank all the other people who supported me during my studies.