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Al-Razak Tareq Rahem A.B.D.,Electronics and Systems Engineering | Ismail M.,Electronics and Systems Engineering | Idris A.,UTeM | Dheyaa A.,Electronics and Systems Engineering
Journal of Theoretical and Applied Information Technology | Year: 2014

Vehicular Ad Hoc Network (VANET) is a kind of mobile ad hoc networks. VANET is used to endow wireless communication between vehicles and vehicle to road side equipments. The communication between vehicles is used for safety, placate and for entertainment as well. The performance of communication depends on the performance of routing in the network. Routing of data is dependent on the routing protocols used in network. In this study we investigated about various ad hoc routing methods so as to select suitable method for different kinds of network in VANET. The main aim of our study was identification of the ad hoc routing method that has better performance in highly mobile environment of VANET. Comparing on the basis of throughput and packet drop, it seems that position based routing method of VANET as better performance as compared to the traditional ad hoc topology based routing. However, it is not easy to provide any universal routing protocol that can deal with all the cases of VANET. The selection of a single routing protocol is not easy in VANET because the performance of the protocol depends on speed of the vehicle, driving environment etc. These factors may vary from one environment of network to another. © 2005 - 2014 JATIT & LLS. All rights reserved. Source

Ramirez-Velarde R.,ITESM | Olave M.S.,UTeM | Alexandrov N.,B.sc. | Ortega L.D.M.,UAH
Proceedings of 2015 International Conference on Interactive Collaborative and Blended Learning, ICBL 2015 | Year: 2015

In this article we show how Principal Component Analysis can determine if a course design provides class activities that drive students to improve their skills and get good grades. We also show how this type of statistical analysis can simplify course design by determining if certain activities and feedback instruments measure the same thing. © 2015 IEEE. Source

Rodriguez J.R.,Polytechnic University of Catalonia | Ruiz F.,UTeM | Biel D.,Polytechnic University of Catalonia | Guinjoan F.,Polytechnic University of Catalonia
ISCAS 2010 - 2010 IEEE International Symposium on Circuits and Systems: Nano-Bio Circuit Fabrics and Systems | Year: 2010

Power quality of electric networks with high penetration of photovoltaic systems has been analyzed in different publications. It has been noted that inverters may increase their harmonic emissions when connected to weak networks, this harmonics may affect other equipments connected to the network and decreasing their performance. This document shows the effects of connecting multiple photovoltaic generators in a network through simulations using MATLAB-Simulink SimPowerSystems. ©2010 IEEE. Source

Wong M.A.,UTeM | Zulkifli N.,Lighwave Communication Research Group | Idrus S.M.,Lighwave Communication Research Group
Lecture Notes in Electrical Engineering | Year: 2015

Access networks are increasingly shaped by the emerging trend of user applications that called for the need of converged layers to meet the requirement of growing spectrum resources. But currently, majority of the previous works in this domain are still limited to a specific functional layer. Recently discovered, MANETs of access network alone have salient characteristic that is bandwidth constrained where the wireless links of frontend topology will continue to have significantly lower capacity than their wired counterpart. Hence, a unified and hybrid method to establish a performance evaluation of MANET (AODVUU, OLSR and DYMOUM) routing based on IEEE 802.11 mesh topology over passive optical system access network is proposed through simulation in the OMNeT environment. The results show that DYMO has the best performance compared to AODV and OLSR of in terms of throughput and delay as the performance metrics. © Springer-Verlag Berlin Heidelberg 2015. Source

Gonzalez A.,IXA Group UPV EHU | Rigau G.,IXA Group UPV EHU | Castillo M.,UTeM
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) | Year: 2012

WordNet Domains (WND) is a lexical resource where synsets have been semi-automatically annotated with one or more domain labels from a set of 170 hierarchically organized domains. The uses of WND include the power to reduce the polysemy degree of the words, grouping those senses that belong to the same domain. This paper presents a novel automatic method to propagate domain information through WordNet. We compare both labellings (the original and the new one) allowing us to detect anomalies in the original WND labels. We also compare the quality of both resources (the original labelling and the new one) in a common Word Sense Disambiguation task. The results show that the new labelling clearly outperform the original one by a large margin. © 2012 Springer-Verlag. Source

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