Digital Marketing.- Online Celebrities' Endorsement and Consumers' Adoption and Dissemination of Information.- What "Uses and Gratifications' Theory can tell us about using Professional Networking Sites (e.g LinkedIn, Viadeo, Xing, SkilledAfricans, Plaxo...).- Intention of Adoption of Mobile Commerce from Consumer Perspective.- Not Always a Co-Creation: Exploratory Study of Causes, Emotions and Practices of the Value Co-Destruction in Virtual Communities.- Empirical Study of Algerian Web Users' Behavior. The case of Ouedkniss.com.- Capturing Leading Factors Contributing To Consumer Engagement In Online Co-Design Platform Of Olive Oil Packaging: A Focus Group Study And A Research Model Proposal.- Digital Economy and e-Learning.- Knowledge Transfer Through e-Learning: Case of Tunisian Post.- Modeling of a Collaborative Learning Process with Business Process Model Notation.- Intermediation and Decision Support System for the Management of Unemployment: the Simulator of Duration.- Online Project Management and PHP7 Application: a real case study.- Data Science and Security.- Data Stream Mining Based-Outlier Prediction for Cloud Computing.- Overlapping Community Detection for Social Networks.- New Overlap Measure for the Validation of Non-Disjoint Partitioning.- Uniformly Spread Embedding based Steganography.- Uncertainty in Web Data.- First steps towards an electronic meta-journal platform based on crowdsourcing.- Skyline Operator over Combined Reviews of Tripadvisor Travelers under the Belief Functions Theory.- An adaptive approach of label aggregation using a belief function framework.- Assessing Items Reliability for Collaborative Filtering within the Belief Function Framework.