Overlay Journals: A New Model for Open Access Publishing
The landscape of academic publishing is evolving toward greater transparency and accessibility. Among the most innovative developments is the overlay journal, a specialized type of open access electronic journal (ejournal) that reimagines how scholarly work is curated and validated.
Unlike traditional journals, an overlay journal does not produce its own original content. Instead, it acts as a curated layer—or "overlay"—that selects and validates texts already available for free online. This model separates the act of publishing (hosting the text) from the act of editorial selection and quality assurance.
How Overlay Journals Function
Overlay journals typically source their content from open access repositories and public domain sources. While many rely heavily on preprint servers (platforms where researchers share manuscripts before formal peer review), some, such as the Lund Medical Faculty Monthly, primarily feature papers from commercial publishers, providing links to self-archived preprints or postprints whenever possible.
[ไม่มีภาพประกอบ]
The Editorial and Review Process
The core value of an overlay journal lies in its editorial oversight. Editors locate suitable materials from public repositories, read them, and evaluate their scientific worth. Depending on the journal's standards, this evaluation may be conducted by a single editor or through a comprehensive peer review process, where independent experts in the field vet the research for accuracy and rigor.
Methods of Validation and Publication
Once a text is approved, the journal provides public validation in several ways:
- Republishing: The editor may republish the article with an explicit stamp of approval.
- Metadata Enhancement: Approval may be indicated by adding specific notes to the text or its metadata (the structured data that describes the file).
- Linking: The journal may simply link to the original article via its table of contents.
- Themed Issues: Editors may group scattered articles from various open access ejournals into a single themed issue, providing focused coverage of emerging or obscure topics.
Key Facts
- Content Source: They do not create content but select from existing free online texts.
- Primary Sources: Content is often drawn from preprint servers and open access repositories.
- Validation: Quality is ensured through editorial judgment or full peer review.
- Format: They are almost exclusively online electronic journals.
- Value Add: They provide curation and thematic grouping for scattered research.
Notable Examples and Initiatives
Several organizations have pioneered the overlay model to streamline scientific communication. Episciences, an initiative by the Center for Direct Scientific Communication, hosts multiple overlay journals, including Logical Methods in Computer Science and Fundamenta Informaticae.
In 2019, the open access publisher JMIR Publications expanded this concept by launching JMIRx. This series of "superjournals" serves as an overlay for prominent preprint servers such as medRxiv, bioRxiv, and PsyArXiv.
| Feature | Traditional Journal | Overlay Journal |
|---|---|---|
| Content Production | Produces/Hosts original content | Selects existing online content |
| Primary Source | Submitted manuscripts | Preprint servers & repositories |
| Validation Method | Internal peer review | Editorial judgment or peer review |
| Distribution | Print or Digital | Almost always electronic (ejournal) |
Frequently Asked Questions
What is the main difference between an overlay journal and a traditional journal?
The primary difference is that an overlay journal does not host or produce its own original content; instead, it curates and validates research that is already freely available in online repositories.
Where do overlay journals get their articles?
They typically source articles from preprint servers, open access repositories, and public domain sources.
Do overlay journals use peer review?
Yes, they can. Evaluation may range from the judgment of a single editor to a full, formal peer review process.
What are "superjournals" in the context of JMIRx?
Superjournals, such as those under the JMIRx umbrella, are overlay journals specifically designed to curate content from preprint servers like bioRxiv, medRxiv, and PsyArXiv.
How does an overlay journal provide value to the reader?
They add value by filtering high-quality research from vast repositories and grouping related articles into themed issues, making it easier to find focused information on specific or emerging topics.