• Each ETD has a unique identifier known as anAccession Number.
• When an ETD is published, its permanent URL has this format:
  https://rave.ohiolink.edu/etdc/view?acc_num=<accession_number>
• ETD references should always use the permanent URL.

OAI-PMH Base URL

https://etd.ohiolink.edu/acprod/odb_etd/ws/oai/oai

Sitemap

https://etd.ohiolink.edu/acprod/odb_etd/ws/etd_search_sitemap/sitemap

Search Web Interface

The ETD search web interface ishttps://etd.ohiolink.edu.
ETDs can be browsed by Institution/Department or Author’s Last Name.

Two ETD types

1. AFull Textsubmission includes an Abstract and a PDF with optional supplemental files (media, audio, images, etc).
2. TheAbstract only does not contain a PDF or any supplemental files.

ETDs are indexed by these fields

• Title
• Author
• Keyword(s)
• Subject
• Accession Number
• Abstract
• Advisor(s)
• Degree Year
• Institution
• Language
• Full text PDF (as of ETD Center 3.0, August 2021)

Cataloging

Many Institutions catalog their ETDs and load the MARC records into their local catalog. MARC records can be generated from the ETD's OAI-PMH metadata feed using the popular, freeMarcEdit tool. Fordetails, please see theETD Center Documentation page and refer to theETD Metadata and OAI-PMH Harvesting section. There you'll find guides and how-to videos.

The MARC record output is in RDA, containing information from the ETD submissions and can be used as is or edited to meet local standards. In 2021, the ETDCat tool that previously generated MARC records was retired and this new process replaced it.

Metadata Harvesting

• Follows OAI-PMH v2.0 standards (http://www.openarchives.org/pmh/).
• OAI-PMH base URL:https://etd.ohiolink.edu/acprod/odb_etd/ws/oai/oai

Three metadata formats

1. oai_dc Simple (Unqualified) Dublin Core
2. oai_etdms ETDMS 1.0
3. marc21 MARCXML

These formats are listed at
https://etd.ohiolink.edu/acprod/odb_etd/ws/oai/oai?verb=ListMetadataFormats

Selective harvesting

We support selective harvesting of ETDs based on the originating ETD program (institution) using the OAI set construct.

• Use this URL to list sets:https://etd.ohiolink.edu/acprod/odb_etd/ws/oai/oai?verb=ListSets

Web-Crawling / Bot Access

Google Scholar (https://scholar.google.com) provides the ability to search scholarly content across many sources including the OhioLINK ETD Center. To allow bots to “crawl” the ETD Center, these meta tags are required for each view ETD page:

• citation_author (Author’s Name as it appears in the ETD submission)
• citation_title (Title of the ETD)
• citation_dissertation_institution (Institution associated with the ETD submission)
• citation_date (year in which the degree was earned)
• citation_pdf_url (html escaped pdf URL - always present, empty content attribute when no full text submission or embargoed).

Additionally, crawling is performed by “bots” which cannot accept cookies. In order for the ETD center to bypass the cookie requirement for downloading a PDF, we implemented RESTful web services for this access. Pleaseemail OhioLINK support for more details.