At present there are different TCP versions providing different performances. In this work the three of them: Reno, CUBIC and Vegas are considered. We simulate a WAN type network analyzing the throughput and performance of these TCP variants in order…

Based on the need to update the language and tools used to teach Procedural Programming during the first year of computer science careers, a cross descriptive research was conducted by assessing different programming languages.
The analysis involved a total of…

To support multimedia applications, it is desirable that an ad hoc network has a provision of Quality
of Service (QoS). However, the provision of QoS in an ad hoc network is a challenging task due to its
inherent…

Fading and obstacles constitute major threats to effective quality of service (QoS) delivery in wireless local area network (WLAN) environments.
In this contribution, we investigate the signal quality of indoor and outdoor WLANs over a defined coverage area. We present…

Internet world is characterized by many users among which are crackers and thieves. Hence, the need for a secured system to safely exchange confidential information among users across the web is required. Of such tool is steganography that simply hides…

The computer vision based applications market is increasing since several years ago. A lot of new application areas are incorporating this type of systems to solve particular problems. An emergent trend in last decades is incorporate dedicated devices to particular…

This document presents a quantitative analysis of the direct and relative throughput of IEEE 802.11e.
The global throughput of an 802.11e WLAN is determined by EDCA (Enhanced Distributed Channel Access) parameters, among other aspects, that are usually configured with predetermined…

We present here the first visual interface for a Mexican Spanish Sign Language translator on its first development stage: sign-writing recognition. The software was developed for the unique characteristics of Mexican linguistics and was designed in order to use sentences…

The general objective of this thesis is the development of an adaptive technique for extracting knowledge in large databases. Nowadays, technology allows storing huge volumes of information. For this reason, the availability of techniques that allow, as a first stage,…

Ce petit volume a pour object de représenter aussi complètement que possible la naissace et l'évolution de la notion aujourd'hui fondamentale de l'isotopie ainsi que l'exposé été tout d'abord reconnue chez les radioéléments, a pu étre étudiée dans des conditions…