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AcknowledgementsWorking with this thesis has been a privilege since it has involved multiple contactswith stakeholders, governmental authorities and research colleagues in Norway andabroad. Without their contribution this collaborative research work could not have beenperformed. Even though many persons have been involved, there are some peoplewhose contribution I would like to mention particularly.First I would like to thank my supervisors; Professor Annik Magerholm Fet; ProfessorJan Hovden and Professor Gijs Breedveld for their support. Even though I think I havebeen quite self-sustained you have supported me all the way through the PhD. Thecompetence on how to reflect and discuss scientific work is something I have learnedfrom you and it will be important in my future research career.I would sincerely like to thank Dr Igor Linkov and colleagues for the support and adviceduring the sabbatical in Boston, USA. Dr Linkov’s work has been an inspiration for thethesis and the productivity in this cooperation has been far beyond expectations.Very important has been the support from colleagues and contributors in the “Sediment& Society” research project. Among all contributors I would especially thank Dr DavidBarton, Dr Amy Oen and Gerard Jan Ellen for giving substantial contributions to thepapers in the thesis.Equally important are the contributions from the “Opticap” research project, andespecially Dr Tuomo Saloranta, Dr Espen Eek, Dr Gerard Cornelissen, Dr Bjørn VidarVangelsten, Dr Morten Schaanning, Dr Hans Peter Arp and Dr Sarah Hale.A special gratitude goes to Tim Gregory, NGI for providing illustrations to the thesis.I am also deeply grateful to NGI for financing the work. The possibility for taking aPhD within a normal employment position is a unique opportunity and is the envy ofcolleagues at other places.Gratitude goes also to the Department of Industrial Economics and TechnologyManagement NTNU for the administration of the PhD.Last, but not least I would like to thank my wife for making it possible for me to travelon several tours to Trondheim and conducting the USA sabbatical.iii