ojs-3-doi-guide

1. Introduction

Digital Object Identifier (DOI)


DOI stands for Digital Object Identifier, which is a globally unique identifier for digital objects. In the OJS context such objects are journals, journal issues, journal articles, and supplementary files.

DOIs are used as a way to link persistently to an article so that – provided they are kept up to date – any link or reference to a DOI should take a user to where the article currently resides online.

DOIs are useful for things like citation metrics, but also as a way to prevent or combat dead links. For example, a DOI in a citation would provide the user with a persistent link to the object cited.

DOIs are associated with one or several URLs that can be resolved through a persistent URL at a global re-direction domain (http://dx.doi.org/some-doi).

Additional metadata about certain types of digital objects can be stored in the databases of specialized DOI registration agencies. This enables discovery of these objects through the web sites of the registration agencies or their partners (e.g., scientific search engines).

In the OJS context such objects are journals, journal issues, journal articles and supplementary files.

Important:
A DOI is unique. Any article should only have one unique combination of a DOI prefix and suffix. Articles should also, ideally, have only one DOI each.

1. Introduction

Digital Object Identifier System


DOIs are composed of a prefix and a suffix which are separated by a slash (e.g. “10.1234/cdb2011-01-bio234”). Organizations that want to participate in the DOI system have to apply for an account at a registration agency which will assign a unique DOI prefix to the organization (e.g. “10.1234”). The organization can then assign arbitrary suffixes to their digital objects as long as they guarantee that no suffix will be repeated (e.g. “cdb2011-01-bio234” in the above example). Sometimes several organizations share a DOI prefix to reduce the cost of DOI registration.

Once a prefix has been obtained and a suffix assigned to a publication object, the DOI composed of prefix and suffix has to be registered with the registration agency. The publishing organization formats metadata corresponding to the publication object into the metadata format specific to the registration agency. The resulting XML file will then be transmitted to the registration agency together with the DOI and the corresponding URL of the publication object.

 

2. OJS DOI Integration
2. OJS DOI Integration
3. OJS DOI Registration
3. OJS DOI Registration

The Crossref Export/Registration Plugin can deposit DOIs to the Crossref database for consideration and acceptance. This can be accomplished in an entirely automatic fashion; manually through OJS; or completely externally to OJS if need be.

Configuring OJS 3.x for Automatic Deposits


  1. Ensure that all Journal Setup steps that the Crossref plugin requires have been filled in. Under Journal Settings, you will need the following:
    • Journal Title.
      Journal Initials.
      Journal Abbreviation.
      Journal ISSN (or electronic ISSN).
      Principal Contact (name and email).
      Technical Support Contact (name and email).

  2. Enable and configure the DOI Plugin.
  3. Ensure that your articles have DOIs assigned to them.
  4. Ensure that page numbers are present for the articles you are submitting (see Schedule for Publication).
  5. Configure the Crossref Deposit Plugin. This can be done from Import/Export -> Crossref Export/Registration Plugin.
    • The plugin will tell you whether the overall system requirements have been satisfied [1].
      If you have your Crossref login credentials, you can supply them here and enable automatic DOI deposit [2].
      You can select production option or choose CrossRef test API (testing environment) for automatic DOI deposit [3].

If you have configured the plugin to work automatically, OJS will deposit DOIs as they are created without your intervention. You can check the Articles page to confirm that DOIs have been deposited.

Configuring OJS 3.x for Manual Deposits


  1. Ensure that all Journal Setup steps that the Crossref plugin requires have been filled in. Under Journal Settings, you will need the following:
    • Journal Title.
      Journal Initials.
      Journal Abbreviation.
      Journal ISSN (or electronic ISSN).
      Principal Contact (name and email).
      Technical Support Contact (name and email).

  2. Enable and configure the DOI Plugin.
  3. Ensure that your articles have DOIs assigned to them.
  4. Ensure that page numbers are present for the articles you are submitting (see Schedule for Publication).
  5. If you have not configured the plugin to deposit DOIs automatically, you can register them manually yourself by using the “Submit” button on the Articles page. For best results, submit a small amount of DOIs at a time. Registration can take a while for large uploads to Crossref servers. Large batch uploads are likely better performed via XML Export. You can also check the status of registration for any of the articles.
  6. You can also export batch XML files to upload via the Crossref backend. From the Crossref plugin you can use the “Download XML” button on the Articles page. You’ll be asked where you’d like to save the XML. You can then navigate to the Crossref backend, login with your credentials, and upload your XML from there. Here are the steps:
    • Export from OJS by selecting the articles you’d like to export and clicking the Download XML button.
      Save the XML file locally.
      Navigate to Crossref’s metadata quality check and upload your file here first to check for any validation errors.
      Login to your Crossref member backend.
      Click on the Submissions tab.
      Click on “choose file” and select your XML export file. Make sure that “metadata” is selected below, and click upload.

    You should receive an email to let you know the status of your submission, provided you are listed as the “technical support contact” of your journal. You can change the submitter email name and ID in the XML before you export, if you like.