Abstract

Without metadata, the value of the stock shots archived as audiovisual heritage decreases due to the limitations of content retrieval. A number of archives are not catalogued yet, and others have a metadata structure but need to be re-catalogued and re-indexed. Incomplete metadata, legal issues related to the right to be forgotten, new relevance of events or people, or new journalistic approaches to the information are some of the triggers of this requirement, which is extremely complex and sometimes unviable. This leads us to assume that there are certain unachievable limitations on audiovisual archives management.

Abstract

In the most recent edition of Google Scholar Metrics (2012-2016) there was an abrupt drop in the number of Spanish scientific journals; the total was 1,101 in the 2011-2015 edition but fell to 599 in the 2012-2016 edition. We conducted an analysis by discipline in order to find which journals were affected. After considering several hypotheses to explain this phenomenon, we conclude the main cause was the sudden disappearance of the Spanish bibliographic database Dialnet from Google Scholar. Because Dialnet is the only online source that provides information about an important number of Spanish journals (which do not have any other online exposure), being dropped by Google Scholar meant that all these Spanish journals, which had previously been indexed in Google Scholar Metrics, became suddenly invisible.