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Adaptive systems refer to autonomous interactive systems that adjust their behavior and functionality to environmental changes. In e-learning context, adaptive e-learning systems (AESs) adapt their services to users interests, knowledge and goals. In order to investigate the trend of researches in the field of adaptation in e-learning systems, a(More)
Online social networks provide user relationships and increase information and resource sharing between a large amount of users. Communications by social networks overtake the emails, and it poses enormous security challenges in this platform. Numerous privacy leakages arise while unauthorized users can access information at anywhere and anytime. This paper(More)
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