Data basis at LUH
Data basis
| Publication types | Percentage of publications from 2019-2023 |
|---|---|
| Journal article | 60.3% |
| Conference contribution | 18.2% |
| Contribution to book/anthology | 13.3% |
| Monograph | 3.6% |
| Conference article in journal | 2.9% |
| Review article in journal | 1.7% |
The data for the evaluation of the open access share of LUH publications is collected using the Research Information System (FIS), which serves as the university bibliography. The following evaluations are based on the data available in the FIS as of June 2025.
Certain publication types were taken into account for the evaluation of the open access share of LUH publications from 2019 to 2024. In addition to journal articles, which are typically evaluated, other publication types that are considered relevant in the context of the open access transformation were included. Of the total number of publications considered in the evaluation, 60.3% correspond to the publication type 'journal articles', 18.2% are 'conference contributions', 13.3% are 'contributions to books or anthologies', 3.6% are 'monographs', 2.9% are 'conference articles in journals', and 1.7% are 'review articles' in journals.
Open Access share per publication type
The evaluation on the left shows the level of open access percentages within different publication types per year. At an average of 96%, the highest open access percentage is to be noted in the publication type of conference articles in journals. For articles in journals, a significant increase from around 47% in 2019 to around 70% in 2024 can be seen. The open access percentage for conference contributions has also remained constant over the years at an average of 30%. The open access share of contributions to books or anthologies, as well as monographs, has risen from around 14% to 17%. In summary, although there is a trend towards open access, there is still considerable potential for improvement. However, it should also be noted that publication data from the previous year may not yet have been fully recorded in the FIS at this point in time, particularly because green open access publications are often only made available after an embargo period and therefore appear in the system with a time delay.
Open access color shares of LUH journal articles
The graph on the left shows the temporal course of the open access color shares of exclusively LUH journal articles from 2019 to 2024.
The increase in gold open access journal articles is distinct, particularly up to 2022. The number of hybrid open access journal articles has also risen sharply over the years. It is particularly noteworthy that in 2023, for the first time, there are more hybrid open access journal articles than gold open access journal articles. This trend will continue in 2024. Noteworthy is also that the proportion of closed open access journal articles has fallen from 44.9% in 2019 to 26.2% in 2024. This shows a clearly positive trend towards open access at the 九色视频.
Explanation of the open access colors
The color coding used in FIS to distinguish different types of open access is based on the :
- Green articles are published in subscription-based journals but archived in an open-access repository or archive. These archives can be discipline-specific (such as ArXiv) or institutional archives operated by universities or other institutions. Green articles can be published versions or preprints and may have any license or no license.
- Bronze articles are freely readable on the publisher's website without a license specified. There may be a delay between publication and access, and articles can often be removed by the publisher.
- Hybrid articles are freely accessible at the time of publication and have an open license. These are usually published against an article processing charge (APC).
- Gold articles have all the features of hybrid articles but are published in purely open access journals, which are called 'Gold Journals' or simply 'Open Access Journals'.
Diamond publications can be published without the authors incurring any article processing charges (APCs). As with the gold route, access is free of charge and unrestricted. Diamond articles have been part of LUH's open access monitoring since 2025.
