Publishing a publication in the form of "true" open access requires unlimited and free access to scientific information. However, uploading a PDF to a website or a publication server does not represent such open access availability. Because only one requirement is met here - free of charge. Unlimited availability is therefore not given consistently.

Because it still applies to copyright which limits reuse even with supposedly free documents.

„The need for the author of a work to provide it with an open content license follows from the fact that a welcome subsequent use of his work based on the copyright restrictions is not possible or not possible in the way he would like it to be possible […]“ Open Access: Lizenzen

Use of PDFs - an example

If you write a research report that is considered an independent publication, you can, according to copyright law, distribute 15% of it to teaching, e.g. as a handout for the seminar group, but not the entire document.

It is a typical gray area. Because even for free and globally accessible documents, copyright limits distribution and reuse.

For this reason, Open Access requires that the users are not left “in the dark”, but rather that the authors clearly state which rights of use you grant. This is done by the use of licenses.

With regard to licenses, there are different models that are used for open access publications. HSDopus uses the Creative Commons model. It consists of four license elements, which can be combined to form six basic licenses.

When to use which license?!

CC BY SA 3.0 by Jöran Muuß-Merholz für wb-web
Note: According to the Berlin declaration, which allows processing and use for any responsible and therefore basically commercial purpose are permitted, only the Creative Commons licenses CC-BY and CC-BY-SA are "real" Open Access licenses.

Note on the right to quote:

This is a limitation of the copyright law (see § 51 UrhG), which allows to distribute or use parts of works in the form of quotations without the need to ask the author. It is therefore permitted to quote from any type of work, but always check carefully whether the requirements of the “document function” are fulfilled.

Good Scientific Practice

"Scientific work is based on basic principles that are the same in all countries and in all scientific disciplines. The most important factor is honesty to yourself and others. At the same time, it is an ethical norm and the basis of the rules of scientific professionalism that vary from discipline to discipline, so to say, good scientific practice. " DFG 2013, S. 13
Based on the DFG memorandum "Ensuring good scientific practice", the authors are therefore required to always clearly differentiate between their own parts and foreign parts. This means that a source of information should always be given, even if it is material that the rights of use allow you to use freely.