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Acknowledgements
First and foremost, I would love to show my great gratitude to my tutor Dr. Jonathan Gosling who is a strict and well-read professor. I get a lot of progress and improving by his helping in life and guiding me in learning. It is hard to describe my gratitude by words. He is both my tutor in study and helpful friend in life. Instructor meticulous work, dedicated professionalism sets a good example to me. From dissertations to research work carried out at each step, all have devoted their attention and teach, they raised a lot of very useful and valuable suggestions, so I was able to smoothly complete the task of studying and writing papers.

I thank my dear classmates and friends, because of your accompanying, let my life has been bereft of entertainment, so my research has been the object of discussion, let me talk to you when I am being in troubles or bad mood. Thanks to your care and help me in every possible way, I could successfully complete the paper. Finally would like to thank my family, quietly in the background gives me great concern and support. My success is also your one. Thank you all for giving me support and love, I will be more efforts and hard working in the future.

Abstract
In the 1950s United States researchers firstly used network technology, in the 1960s Professor Hua introduced the technology over to China. The network technology has been rapidly applied to project management and 代写留学生论文other fields. Network optimization technology is a high-level network planning, and also it is an important part of research fields in project management. Network optimization contains four different sides, which are fixed duration-resources balance, resources limited-shortest duration, duration-coat exchanged and maximizing the net present value of projects, and the last side in present years has become a focus in network optimization. Based on the fore-researcher’s achievement, some research has been done in this paper on the problem of evaluating and maximizing the net present value of project, activity’s pattern, limited resources, payment scheduling, contract reward and punishment and other factors which all affect the problem are discussed and improves the established mode. Ultimately, the outcomes of the paper are illustrated by a practical instance.

Contents Page
Acknowledgements i
Abstract ii
List of Figures and Tables v
1. Context of Research 1
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