Thesis by publication. Author included both published version and accepted manuscript of each article/conference paper in thesis. ------ Published papers which form chapters 3 and 4 are restricted by publisher's permissions. Papers were removed. The accepted manuscripts were permitted and left in the thesis. (https://authorservices.taylorandfrancis.com/copyright-and-you/) "After assigning copyright, you will still retain the right to:.......Include your article Author’s Original Manuscript (AOM) or Accepted Manuscript(AM), depending on the embargo period in your thesis or dissertation. The Version of Record cannot be used. For more information about manuscript versions and how you can use them, please see our guide to sharing your work." *Also included is a conference paper. Paper is subject to copyright according to proceedings on conference website https://aueb-analytics.wixsite.com/mathsport2019 Found no information to indicate paper is permitted for inclusion within thesis. Paper removed and replaced with citation. The complete thesis has been placed in the IRCS secure archive share drive LM 21/08/20