José Luis Ortega

Publication Activity (10 Years)

Years Active: 2006-2024
Publications (10 Years): 19

Top Topics

Longitudinal Study

Top Venues

J. Informetrics

Aslib J. Inf. Manag.

J. Assoc. Inf. Sci. Technol.

Publications

Lorena Delgado-Quirós, José Luis Ortega
Completeness degree of publication metadata in eight free-access scholarly databases. Quant. Sci. Stud. 5 (1) (2024)
Lorena Delgado-Quirós, Isidro F. Aguillo, Alberto Martín-Martín, Emilio Delgado López-Cózar, Enrique Orduña-Malea, José Luis Ortega
Why are these publications missing? Uncovering the reasons behind the exclusion of documents in free-access scholarly databases. J. Assoc. Inf. Sci. Technol. 75 (1) (2024)
José Luis Ortega, Lorena Delgado-Quirós
The indexation of retracted literature in seven principal scholarly databases: a coverage comparison of dimensions, OpenAlex, PubMed, Scilit, Scopus, The Lens and Web of Science. Scientometrics 129 (7) (2024)
José Luis Ortega
Classification and analysis of PubPeer comments: How a web journal club is used. J. Assoc. Inf. Sci. Technol. 73 (5) (2022)
José Luis Ortega
How do media mention research papers? Structural analysis of blogs and news networks using citation coupling. J. Informetrics 15 (3) (2021)
José Luis Ortega
The relationship and incidence of three editorial notices in PubPeer: Errata, expressions of concern, and retractions. Learn. Publ. 34 (2) (2021)
José Luis Ortega
Blogs and news sources coverage in altmetrics data providers: a comparative analysis by country, language, and subject. Scientometrics 122 (1) (2020)
José Luis Ortega
Proposal of composed altmetric indicators based on prevalence and impact dimensions. J. Informetrics 14 (4) (2020)
José Luis Ortega
The coverage of blogs and news in the three major altmetric data providers. ISSI (2019)
José Luis Ortega
Reliability and accuracy of altmetric providers: a comparison among Altmetric.com, PlumX and Crossref Event Data. Scientometrics 116 (3) (2018)
José Luis Ortega
The life cycle of altmetric impact: A longitudinal study of six metrics from PlumX. J. Informetrics 12 (3) (2018)
José Luis Ortega
Exploratory analysis of Publons metrics and their relationship with bibliometric and altmetric impact. Aslib J. Inf. Manag. 71 (1) (2018)
José Luis Ortega
The presence of academic journals on Twitter and its relationship with dissemination (tweets) and research impact (citations). Aslib J. Inf. Manag. 69 (6) (2017)
José Luis Ortega
Toward a homogenization of academic social sites: A longitudinal study of profiles in Academia.edu, Google Scholar Citations and ResearchGate. Online Inf. Rev. 41 (6) (2017)
José Luis Ortega
Are peer-review activities related to reviewer bibliometric performance? A scientometric analysis of Publons. Scientometrics 112 (2) (2017)
José Luis Ortega
To be or not to be on Twitter, and its relationship with the tweeting and citation of research papers. Scientometrics 109 (2) (2016)
José Luis Ortega
Disciplinary differences in the use of academic social networking sites. Online Inf. Rev. 39 (4) (2015)
José Luis Ortega
Relationship between altmetric and bibliometric indicators across academic social sites: The case of CSIC's members. J. Informetrics 9 (1) (2015)
José Luis Ortega
How is an academic social site populated? A demographic study of Google Scholar Citations population. Scientometrics 104 (1) (2015)
José Luis Ortega, Isidro F. Aguillo
Microsoft academic search and Google scholar citations: Comparative analysis of author profiles. J. Assoc. Inf. Sci. Technol. 65 (6) (2014)
Enrique Orduña-Malea, José Luis Ortega, Isidro F. Aguillo
Influence of language and file type on the web visibility of top European universities. Aslib J. Inf. Manag. 66 (1) (2014)
José Luis Ortega, Enrique Orduña-Malea, Isidro F. Aguillo
Are web mentions accurate substitutes for inlinks for Spanish universities? Online Inf. Rev. 38 (1) (2014)
José Luis Ortega
Influence of co-authorship networks in the research impact: Ego network analyses from Microsoft Academic Search. J. Informetrics 8 (3) (2014)
José Luis Ortega, Isidro F. Aguillo
Network visualisation as a way to the web usage analysis. Aslib Proc. 65 (1) (2013)
José Luis Ortega, Isidro F. Aguillo
Institutional and country collaboration in an online service of scientific profiles: Google Scholar Citations. J. Informetrics 7 (2) (2013)
José Luis Ortega, Isidro F. Aguillo
Science is all in the eye of the beholder: Keyword maps in Google scholar citations. J. Assoc. Inf. Sci. Technol. 63 (12) (2012)
José Luis Ortega, Elena López-Romero, Inés Fernández
Multivariate approach to classify research institutes according to their outputs: The case of the CSIC's institutes. J. Informetrics 5 (3) (2011)
José Luis Ortega
Collaboration patterns in patent networks and their relationship with the transfer of technology: the case study of the CSIC patents. Scientometrics 87 (3) (2011)
Isidro F. Aguillo, Judit Bar-Ilan, Mark Levene, José Luis Ortega
Comparing university rankings. Scientometrics 85 (1) (2010)
José Luis Ortega, Isidro F. Aguillo
Shaping the European research collaboration in the 6th Framework Programme health thematic area through network analysis. Scientometrics 85 (1) (2010)
José Luis Ortega, Isidro F. Aguillo
Describing national science and technology systems through a multivariate approach: country participation in the 6th Framework Programmes. Scientometrics 84 (2) (2010)
Isidro F. Aguillo, José Luis Ortega, Mario Fernández, Ana M. Utrilla
Indicators for a webometric ranking of open access repositories. Scientometrics 82 (3) (2010)
José Luis Ortega, Isidro F. Aguillo
Network collaboration in the 6th Framework Programmes: country participation in the health thematic area. Scientometrics 84 (3) (2010)
José Luis Ortega, Isidro F. Aguillo
Differences between web sessions according to the origin of their visits. J. Informetrics 4 (3) (2010)
José Luis Ortega, Isidro F. Aguillo
Mapping world-class universities on the web. Inf. Process. Manag. 45 (2) (2009)
José Luis Ortega, Viv Cothey, Isidro F. Aguillo
How old is the Web? Characterizing the age and the currency of the European scientific Web. Scientometrics 81 (1) (2009)
José Luis Ortega, Isidro F. Aguillo, Viv Cothey, Andrea Scharnhorst
Maps of the academic web in the European Higher Education Area - an exploration of visual web indicators. Scientometrics 74 (2) (2008)
José Luis Ortega, Isidro F. Aguillo
Linking patterns in European Union countries: geographical maps of the European academic web space. J. Inf. Sci. 34 (5) (2008)
José Luis Ortega, Isidro F. Aguillo
Visualization of the Nordic academic web: Link analysis using social network tools. Inf. Process. Manag. 44 (4) (2008)
Isidro F. Aguillo, Begoña Granadino, José Luis Ortega, José Antonio Prieto
Scientific research activity and communication measured with cybermetrics indicators. J. Assoc. Inf. Sci. Technol. 57 (10) (2006)
José Luis Ortega, Isidro F. Aguillo, José Antonio Prieto
Longitudinal study of content and elements in the scientific web environment. J. Inf. Sci. 32 (4) (2006)