This map shows the geographic impact of Jehad Najjar's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Jehad Najjar with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Jehad Najjar more than expected).
This network shows the impact of papers produced by Jehad Najjar. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Jehad Najjar. The network helps show where Jehad Najjar may publish in the future.
Co-authorship network of co-authors of Jehad Najjar
This figure shows the co-authorship network connecting the top 25 collaborators of Jehad Najjar.
A scholar is included among the top collaborators of Jehad Najjar based on the total number of
citations received by their joint publications. Widths of edges
represent the number of papers authors have co-authored together.
Node borders
signify the number of papers an author published with Jehad Najjar. Jehad Najjar is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Manouselis, Nikos, et al.. (2008). Results from a study of the implementation of metadata application profiles in Agricultural Learning Repositories. E-LIS Repository (University of Naples Federico II).2 indexed citations
5.
Duval, Erik, Stefaan Ternier, Martin Wolpers, et al.. (2007). Open metadata for open educational resources in an open infrastructure. Lirias (KU Leuven).5 indexed citations
6.
Wolpers, Martin, Jehad Najjar, Katrien Verbert, & Erik Duval. (2007). Tracking actual usage: the attention metadata approach. Lirias (KU Leuven). 32(4). 60–6.97 indexed citations
7.
Wolpers, Martin, Jehad Najjar, & Erik Duval. (2007). Workshop report on the international ACM workshop on contextualized attention metadata: collecting, managing and exploiting rich usage information (cama 2006). ACM SIGIR Forum. 41(1). 92–95.1 indexed citations
8.
Najjar, Jehad, Martin Wolpers, & Erik Duval. (2007). Contextualized Attention Metadata. D-Lib Magazine. 13(9/10).6 indexed citations
Najjar, Jehad, Erik Duval, & Martin Wolpers. (2006). Attention metadata: collection and management. Lirias (KU Leuven). 1–4.33 indexed citations
11.
Najjar, Jehad & Erik Duval. (2006). Actual use of learning objects and metadata: an empirical analysis. Lirias (KU Leuven). 2(2). 1–12.6 indexed citations
Najjar, Jehad, Michael Meire, & Erik Duval. (2005). Attention Metadata Management: Tracking the use of Learning Objects through Attention.XML. 2005(1). 1157–1161.7 indexed citations
14.
Najjar, Jehad, Stefaan Ternier, & Erik Duval. (2004). INTEROPERABILITY OF LEARNING OBJECT REPOSITORIES: COMPLICATIONS AND GUIDELINES. 2(1). 1–16.9 indexed citations
15.
Najjar, Jehad, Joris Klerkx, Stefaan Ternier, et al.. (2004). Usability evaluation of learning object indexation: the ARIADNE experience. 281–290.3 indexed citations
16.
Najjar, Jehad, Stefaan Ternier, & Erik Duval. (2004). User Behavior in Learning Object Repositories: An Empirical Analysis. 2004(1). 4373–4379.17 indexed citations
17.
Najjar, Jehad, et al.. (2003). Towards interoperable learning object repositories: the Ariadne experience. 219–226.23 indexed citations
Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive
bibliographic database. While OpenAlex provides broad and valuable coverage of the global
research landscape, it—like all bibliographic datasets—has inherent limitations. These include
incomplete records, variations in author disambiguation, differences in journal indexing, and
delays in data updates. As a result, some metrics and network relationships displayed in
Rankless may not fully capture the entirety of a scholar's output or impact.