Contextual and Conceptual Information Retrieval and Navigation on the Web.- Automatic Invocation Linking for Collaborative Web-Based Corpora.- WS-Query – A Framework to Efficiently Query Semantic Web Service.- RDF-GL: A SPARQL-Based Graphical Query Language for RDF.- Semantics-Based Intelligent Indexing and Retrieval of Digital Images – A Case Study.- Harvesting Intelligence in Multimedia Social Tagging Systems.- User Profiles Modeling in Information Retrieval Systems.- Human–Web Interactions.- Web Recommender Agents with Inductive Learning Capabilities.- Capturing the Semantics of User Interaction: A Review and Case Study.- Analysis of Usage Patterns in Large Multimedia Websites.- An Adaptation Framework for Web Multimedia Presentations.- A Multifactor Secure Authentication System for Wireless Payment.- A Lightweight Authentication Protocol for Web Applications in Mobile Environments.- Developing Access Control Model of Web OLAP over Trusted and Collaborative Data Warehouses.- Security in Distributed Collaborative Environments: Limitations and Solutions.- A Low-Cost and Secure Solution for e-Commerce.- Hyperchaotic Encryption for Secure E-Mail Communication.