Expansions is an overlay journal based on preprints, open access, and free to submit. Expansions aim to report the latest research achievements of innovative, high-level, and significant importance in the fundamental theory and application of various disciplines of natural science. Articles are classified into Original Papers and Review Papers. Expansions establish an editorial board to oversee the peer review process and ensure the inclusion of editorial board members who can address each specific field.

Advantages of Overlay Journals

While Overlay journals have not yet achieved widespread acceptance among scholars worldwide, it is evident that they represent a novel publishing approach characterized by high efficiency, high quality, strong professionalism, and rapid development when compared to traditional journals. In comparison to traditional and even general open access periodicals, Overlay journals offer distinct advantages in the following areas.

Open access: Overlay journals typically follow the open access model, which means that all articles are freely available to the public. This form of open access facilitates the wide dissemination and sharing of scientific knowledge, making research results more accessible and usable. Open access also has the potential to increase article citations and impact, while providing researchers with greater visibility and influence within their respective fields.

Rapid publishing: Overlay journals are primarily published online, enabling the rapid publication and dissemination of scientific research. In comparison to traditional peer-reviewed journals, overlay journals generally have shorter review cycles, allowing for quicker access to research findings by both academia and the general public. This attribute holds particular significance in areas where timely dissemination of research results is crucial, such as during public health emergencies or within rapidly evolving scientific frontiers.

Peer Review Innovation: Overlay journals often employ innovative approaches to peer review. They may adopt open review, where the review process and opinions are disclosed to enhance transparency and interaction. Additionally, some overlay journals embrace non-traditional review formats such as community review or collaborative review, which encourage extensive academic participation and interaction, thereby improving the quality and efficiency of the review process.

Inclusion of "Grey Literature": Overlay journals are not bound by traditional publishing standards and restrictions. They willingly accept and publish research results that might be overlooked by traditional journals, including "grey literature". This inclusive approach allows researchers to widely disseminate their findings through overlay journals and gain academic recognition for their work.

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