E-Theses Online Service E-Theses Online Service (EThOS) is a bibliographic database and union catalogue of electronic theses provided by the British Library, the National Library of the United Kingdom. EThOS provides access to approximately 480,000 doctoral theses awarded by over 140 UK higher education institutions, with around 3000 new thesis records added every month. EThOS services EThOS records thesis data and metadata which can then be searched with basic and advanced search terms. Data recorded in EThOS Theses indexed by EThOS have a minimum of a thesis title, author, awarding body and date, for example Brian Cox and Elizabeth Blackburn's PhD theses. Optional additional metadata may be included such as the thesis abstract, doctoral advisor, sponsor, cross links to other databases and the full text of the thesis itself. the EThOS website gives open access to the full text of around 160,000 UK doctoral theses that have been digitised, for example the full text of David Beerling and Yadvinder Malhi's theses can be accessed by freely registering for then logging into EThOS. Open access is also provided by links to the Institutional repository of the awarding body, for example the full text of John Sulston's PhD thesis is available by following links in EThOS to the Apollo repository of the University of Cambridge. Since 2015, EThOS has integrated authority control and other unique identifiers including: The author's ORCID identifier, for example Stephen Hawkings thesis record links to the author's The International Standard Name Identifier (ISNI), for example Brian May's PhD thesis record links to the author's ISNI record. The Handle System, for example Adrian Bird's thesis record links to the full text via the handle.net resolver. Digital Object Identifiers (DOIs), for example Sarah Cleaveland's thesis record at EThOS includes a link to the thesis via the doi.org resolver. Some thesis records include the name of the doctoral advisor, for example: Stephen Hawking is recorded as the research supervisor for Ricardo Monteiro's thesis. Freda Newcombe is recorded as the supervisor of Dorothy V. M. Bishop's thesis. Amanda Fisher is recorded as the supervisor of Hakan Bagci's thesis. Doctoral advisor metadata can be used in academic genealogies like academictree.org, Wikidata and the Mathematics Genealogy Project. Academic genealogies in Wikidata are built using the doctoral advisor relation (Property:P184). Searching EThOS metadata Where present, metadata can be used as search criteria. So for example, in addition to a basic search, an advanced search facility allows users to search for theses by publication year, awarding body, author's given name, surname, thesis title, doctoral advisor and various other metadata. Data in EThOS can also be accessed programmatically (by machines) using the Protocol for Metadata Harvesting (PMH) from the Open Archives Initiative (OAI), DataCite and its Application Programming Interface (API). Types of thesis included As well as indexing Doctor of Philosophy theses, EThOS holds records of other kinds of doctorates including: Doctor of Medicine (MD) theses, for example Pensée Wu's thesis. Doctor of Science (ScD or DSc) theses, for example Else Bartels thesis. Doctor of Engineering (EngD or DEng) theses, for example Chris Fowler's thesis. Doctor of Professional Studies (ProfD or DProf) theses, for example Andreas Georgiou's thesis. Doctor of Music (MusD or DMus) and Doctor of Musical Arts (DMA) theses, for example Evaristo Lopez thesis. Doctor of Education (EdD or DEd) theses, for example Mary Greaves thesis. Doctor of Philosophy (PhD or DPhil) by prior publication in peer reviewed journals, for example Jill Steward's thesis. Doctor of Philosophy in creative writing, for example Sally O'Reilly's thesis. Master's degree theses such as Master of Philosophy (MPhil), Master of Research (MRes), Master of Science (MSc) and Master of