Author

Alexandre de Assis Mota

Department of CEATEC, Electrical Engineering Faculty, Pontifical Catholic University of Campinas, Campinas/SP, CEP 13086-900, Brazil

12 articles in our journals

Articles where this person is an author, newest first. People are matched by their name as printed (no ORCID iD is recorded for them), not by name alone; search the name as text to find namesakes too.

Research ArticleOpen accessEmbedded Software Platform Used for Detection and Mitigation of a MAC Anomaly in IEEE 802.11n NetworksArgemiro Bevilacqua, Vitor Chaves de Oliveira, Gunnar Bedicks Jr. et al.IEEE 802.11 standard is largely used anywhere as a cheap way to access internet, but the majority of devices used does not provide a standard way to manage them. Mobile stations competing for access point may causes a general wireless network failure, known as the ''MAC Anomaly''. It is presented here an access point with modified firmware, that monitors wireless … …American Journal of Applied Sciences, Vol. 12, Issue 12 · 21 Nov 2015 · 6,509 accessesView PDF Cite

Research ArticleOpen accessOverview of Certification Methodologies for Sustainable Constructions of Brazilian BuildingsVanessa Silva Pugliero, Lorenzo Campos Coiado, Lia Lorena Pimentel et al.The terms “sustainable” and “environmentally-friendly” have been used in the construction industry field as a marketing appeal. The methodology to judge in which level a building is sustainable in Brazil is incipient, without orientation and hardly ever there is a diffusion of these methods inside Brazilian territory. Almost all developed countries have their appropriate certification methodology for sustainable constructions. Some … …American Journal of Applied Sciences, Vol. 12, Issue 3 · 25 May 2015 · 6,915 accessesView PDF Cite

Research ArticleOpen accessReceived Signal Strength Indication Modeling in Indoor Wireless Sensor NetworksEdson Taira Procopio, Alexandre de Assis Mota, Lia Toledo Moreira Mota, Luiz Rodolfo Barreto da SilvaThis study aims to identify mathematical models that represent the relation between Received Signal Strength Indication (RSSI) and objects in an indoor Wireless Sensor Network (WSN). Using the Least Squares Method, four linear models have been identified: The first one relates uplink RSSI and objects; the second one relates downlink RSSI and objects; the third one relates uplink RSSI and … …American Journal of Applied Sciences, Vol. 10, Issue 9 · 24 Aug 2013 · 6,863 accessesView PDF Cite

Research ArticleOpen accessFeasibility of Desktop Virtualization Per Software Services and Local Hardware Based on the Network ThroughputVitor Chaves De Oliveira, Inacio Henrique Yano, Alexandre De Assis Mota, Lia Toledo Moreira MotaIn recent years, virtualization computing has become a worldwide reality present in datacenters servers of most organizations. The motivations for the use of this solution are focused primarily on cost reduction and increases in availability, integrity and security of data. Based on these benefits, recently it was started the use of this technology for personal computers as well. That is, … …Journal of Computer Science, Vol. 9, Issue 7 · 15 Jun 2013 · 6,725 accessesView PDF Cite

Research ArticleOpen accessPredicting Battery Charge Depletion in Wireless Sensor Networks Using Received Signal Strength IndicatorInacio Henrique Yano, Vitor ChavesDe Oliveira, Eric Alberto de Mello Fagotto et al.This article aims to identify an adequate mathematical model to predict battery power depletion at the nodes of a Wireless Sensor Network (WSN), by analyzing the Received Signal Strength Indicator (RSSI). Six general models were tested, the simplest Average model, Linear Regression model, Autoregressive (AR) models and Autoregressive Moving Average (ARMA) models.The selected model (AR) presented a low absolute mean … …Journal of Computer Science, Vol. 9, Issue 7 · 12 Jun 2013 · 7,239 accessesView PDF Cite

Research ArticleOpen accessElectric Field in Polymeric Isolators of the 500kV Voltage ClassVitor Chaves De Oliveira, Huederson Aparecido Botura Da Silva, Alexandre De Assis Mota, Lia Toledo Moreira MotaThis study presents a detailed study of the electric field in polymeric isolators of the 500kV voltage class through modifications in the dimensions of the anti-corona ring. That is, by varying the three dimensions of the anti-corona ring: height (h), distance of the anti-corona ring conductor (r) and the diameter of the anti-corona ring conductor (d); it was possible to … …American Journal of Applied Sciences, Vol. 10, Issue 6 · 12 Jun 2013 · 6,969 accessesView PDF Cite

Research ArticleOpen accessImpacts of Application Usage and Local Hardware on the Throughput of Computer Networks with Desktop VirtualizationVitor Chaves De Oliveira, Alexandre De Assis Mota, Lia Toledo Moreira MotaCurrently, virtualization solutions are employed in the vast majority of organizations around the world. The reasons for this are the benefits gained by the approach, focusing on increases in security, availability and data integrity. These privileges are also present in a new technique, which emerges from this same concept and is called desktop virtualization. This method, compelled by these advantages, … …American Journal of Applied Sciences, Vol. 10, Issue 1 · 28 Jan 2013 · 7,117 accessesView PDF Cite

Research ArticleOpen accessLow Cost Test Bench to Assess Energy Efficiency of Communications Network EquipmentLuiz Henrique Biazotto, Alexandre de Assis Mota, Lia Toledo Moreira MotaCommunication network Quality of Service (QoS) degradation can lead to the consumption of additional energy to exchange information than that needed in normal conditions. If such behavior is known, network management can be more efficient and accurate, permitting to control more efficiently the energy consumption in telecommunication equipments. This study describes a test bench that can simultaneously measure the QoS … …Journal of Computer Science, Vol. 8, Issue 11 · 20 Sep 2012 · 6,678 accessesView PDF Cite

Research ArticleOpen accessA Simple Algorithm to Assess the Speed Stability of Induction GeneratorsAlexandre de Assis Mota, Lia Toledo Moreira MotaProblem statement: The speed stability if Induction Generators (IG) can be defined as its ability to remain connected to the electric network, operating at a mechanical speed close to the speed associated to the actual system frequency, after being subjected to a perturbation. This IG behavior is normally studied using dynamical methods that are determined through time-consuming simulations and are … …Journal of Computer Science, Vol. 7, Issue 6 · 13 Jun 2011 · 6,553 accessesView PDF Cite

Research ArticleOpen accessQuality of Service Policy for IEEE 802.11 Networks with Service Rate Selection based on Fairness IndexLia Toledo Moreira Mota, Alexandre de Assis Mota, Luis Fernando FontolanProblem statement: The IEEE802.11 standard states that all stations have the same probability of accessing the network, but does not consider important parameters such as transmission rates and signal-to-noise ratios. However, these networks present an anomaly that allows a station with a low transmission rate to use the communication channel for a long time. Approach: In this context, this study … …Journal of Computer Science, Vol. 7, Issue 5 · 7 May 2011 · 6,660 accessesView PDF Cite