This book contains the best papers of the Third International Conference on E-business and Telecommunications (ICETE), which was held in 2006 in Portugal. ICETE is a joint international conference integrating four major areas of knowledge that are divided into four cor- sponding conferences: ICE-B (Int’l Conf.

ICE-B.- Towards Automated Service Trading.- SAGA: An Adaptive Infrastructure for Secure Available GRID on Ad-Hoc Networks.- Variable Quantity Market Clearing Algorithms.- Modeling the Dynamics of Social Networks.- Reputation Management Service for Peer-to-Peer Enterprise Architectures.- A New Approach for the Trust Calculation in Social Networks.- SECRYPT.- Spoofed ARP Packets Detection in Switched LAN Networks.- Efficient All-or-Nothing Encryption Using CTR Mode.- Proposals for Iterated Hash Functions.- Secure Online English Auctions.- Using Microsoft Office InfoPath to Generate XACML Policies.- Least Privilege in Separation Kernels.- Inter-node Relationship Labeling: A Fine-Grained XML Access Control Implementation Using Generic Security Labels.- SIGMAP.- Using Placeholder Slices and MPEG-21 BSDL for ROI Extraction in H.264/AVC FMO-Encoded Bitstreams.- Design and Implementation of Video on Demand Services over a Peer-to-Peer Multioverlay Network.- Traffic Trunk Parameters for Voice Transport over MPLS.- On-the-Fly Time Scaling for Compressed Audio Streams.- Improving Multiscale Recurrent Pattern Image Coding with Deblocking Filtering.- A Network Scheduler for an Adaptive VoD Server.- Enhanced Interaction for Streaming Media.- An E-Librarian Service That Yields Pertinent Resources from a Multimedia Knowledge Base.- WINSYS.- A Transceiver Concept Based on a Software Defined Radio Approach.- Evaluation of an Orthogonal SFBC Channel Estimation Scheme for MIMO OFDM Wireless Systems.- A New Signal Detection Method for TR-UWB: By Time Delayed Sampling and Correlation (TDSC).- Image Transmission with Adaptive Power and Rate Allocation over Flat Fading Channels Using Joint Source Channel Coding.- Directional Spectrum Modelling in Inhomogeneous Forests at 20 and 62.4 GHz.- Useof AGPS Call Data Records for Non-GPS Terminal Positioning in Cellular Networks.- A Telephony Application for Manets: Voice over a MANET-Extended JXTA Virtual Overlay Network.- A Context-Aware Architecture for Mobile Knowledge Management.

This book constitutes the best papers of the Third International Conference on E-business and Telecommunication Networks, ICETE 2006, held in Setúbal, Portugal, August 7-10, 2006. The 29 revised full papers presented were carefully reviewed and selected from 326 submissions. The papers are organized in four parts according to their conferences: ICE-B, SECRYPT, SIGMAP and WINSYS.