A logical explanation as to why the choice of

Shuying Zhang Faculty Mentor: Yan Zeng Department of Pharmacology Fall 2012 Foremost, I would like to express my sincere gratitude to my advisor Prof. Yan Zeng for the continuous support of my study and growing, for his patience, motivation, enthusiasm, and immense knowledge. His guidance helped me in all the time of research and writing of this report. I could not have imagined having a better...

s of PH. D. Theses Title: The Elaboration of Simulation Systems in sustainable agriculture Author: Dorian Drucioc Promotor: Dr.h. , Prof. Valentin Osadcii Date of defence: September 16, 1999 Institution: Free International University of Moldova

Some new regularities found in the pseudoscalar meson octet are reported. They invite to reconsider models where elementary fermions and composite QCD open strings can be grouped in common supermultiplets.

Dedication This dissertation is dedicated to my parents, my husband Liwen and my son Ethan. They have always been there for me. Their endless love and support kept me going for the whole idea of " Ph. D. " v Acknowledgements

1. These notes are the first half of the contents of the course given by the second author at the Bachelier Seminar (February 8-15-22 2008) at IHP. They also correspond to topics studied by the first author for her Ph.D.thesis. 2. Comments are welcome and may be addressed to :