On the Future of Academic Publishing
In chapter 2.3.1 we use journal metadata from the DOAJ, which we extracted in May 2016. In total, we find 8,601 OA journals. Additional information is obtained by adapting our data in two respects. First, we create discipline dummies using the categorization applied by the DOAJ, which distinguishes the 15 fields enumerated in chapter 2, and we add a dummy ‘other’ to account for journals that cannot be assigned to any of these 15 fields. Note that some journals can be assigned to multiple fields, e.g. for interdisciplinary journals. In these cases we determine the discipline on the basis of the first level assignment to avoid counting journals twice. Moreover, a total of 3,208 journals were assigned to the discipline ‘Science’, with a more specific assignment on the second level. In each instance, we manually assigned the disciplines based on the assignment on the second level. For example, ‘Science: Economics’ was assigned to ‘Bus’ and ‘Science: Microbiology’ was assigned to ‘Bio’. Second, using the journal ISSN, we matched the DOAJ metadata with the JCR (2014) database to add information on the impact factor (IF), the ‘Five Year Impact Factor’ (FiveIF), the Eigenfactor and normalized Eigenfactor. Table A.2.3 provides the summary statistics for the DOAJ database matched with JCR (2014).
Furthermore, we created a number of dummies to capture additional journal characteristics: APC indicates whether a journal charges article processing fees. Similarly, submission fee accounts for separate submission fees to be paid to the journal. English equals...
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