Theis by publication. •Chapter 4 - not permitted - published version. According to Sherpa/Romeo is not permitted. Publisher permissions https://cgscholar.com/cg_support/en/docs/60 indicates it is also not permitted - it is only permitted for open access journals. Article has been removed and a page inserted with published version details. •Chapter 5 - published version - according to Sherpa/Romeo (http://sherpa.ac.uk/romeo/issn/0814-0626/) Publisher's Version/PDF: cross author cannot archive publisher's version/PDF. Article has been removed and a page inserted with published version details. •Chapter 6 & 7 - permitted. They are published versions in Elsevier journals. Elsevier has a policy of allowing published articles to remain in theses. https://www.elsevier.com/about/policies/copyright/permissions (click on Can I include/use my article in my thesis/dissertation). •Chapter 8 - not yet published. If it is published in identified journal there is an 18 month embargo. This version included has a watermark "For Peer Review Only." This article has been removed. LM 11/02/20 https://authorservices.taylorandfrancis.com/sharing-your-work/# https://authorservices.taylorandfrancis.com/publishing-open-access/oa-options-finder/