Alex Sandro Roschildt Pinto

Dr. Alex Sandro Roschildt Pinto


Research Focus & Metrics

Academic Career Length

22Years (2005-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 January 2014 in Information Fusion
Verified
Journal Article
Closed access
APAlex Sandro Roschildt Pinto
Alex Sandro Roschildt Pinto
Carlos MontezCarlos Montez
Carlos Montez
GAG. Araújo
G. Araújo
Francisco VasquesFrancisco Vasques
Francisco Vasques
Paulo PortugalPaulo Portugal
Paulo Portugal

1 January 2017
Verified
Conference Paper
Open access
PDF file
EMEmerson Alberto Marconato
Emerson Alberto Marconato
MRMariana Rodrigues
Mariana Rodrigues
RPRayner de Melo Pires
Rayner de Melo Pires
DPDaniel Pigatto
Daniel Pigatto
LFLuiz C. Querino Filho
Luiz C. Querino Filho
KBKalinka Regina Lucas Jaquie Castelo Branco
Kalinka Regina Lucas Jaquie Castelo Branco
The wireless communication has played a significant impact on our daily lives introducing simplicity and making life more comfortable. As a result of faster technological advances in electronics and communications, the development of different types of unmanned aerial vehicles (UAVs) has become possible. Recently, many efforts have been made to develop more efficient inter-and intra-vehicle communication protocols introducing new challenges, e. g. multiple-UAV communication and Flying Ad Hoc Networks (FANETs). However, most of the experiments using real prototypes or systems are not feasible due to the costs and risks involved. Thus, simulating network protocol behavior in FANET scenarios is increasingly required to evaluate the applicability of developed network protocols. Thereby, we have been developing AVENS, a hybrid aerial network simulation framework, which merges LARISSA Architectural Model, X-Plane Flight Simulator and OMNeT++ Discrete Event Simulator. In a proof-of-concept study, we highlighted its advantages. Using AVENS, we can advance in the state-of-the-art concerning performance evaluation of intelligent aerial vehicles and provide means to evaluate the development of protocols, codes and systems more accurately.

7 March 2018 in Sensors
Verified
Journal Article
Open access
PDF file
LMLuis Fernando Castilho Maschi
Luis Fernando Castilho Maschi
APAlex Sandro Roschildt Pinto
Alex Sandro Roschildt Pinto
Rodolfo I. MeneguetteRodolfo I. Meneguette
Rodolfo I. Meneguette
ABAlexandro Baldassin
Alexandro Baldassin
With the advent of the Internet of Things, billions of objects or devices are inserted into the global computer network, generating and processing data at a volume never imagined before. This paper proposes a way to collect and process local data through a data fusion technology called summarization. The main feature of the proposal is the local data fusion, through parameters provided by the application, ensuring the quality of data collected by the sensor node. In the evaluation, the sensor node was compared when performing the data summary with another that performed a continuous recording of the collected data. Two sets of nodes were created, one with a sensor node that analyzed the luminosity of the room, which in this case obtained a reduction of 97% in the volume of data generated, and another set that analyzed the temperature of the room, obtaining a reduction of 80% in the data volume. Through these tests, it has been proven that the local data fusion at the node can be used to reduce the volume of data generated, consequently decreasing the volume of messages generated by IoT environments.

6 January 2014 in Sensors
Verified
Journal Article
Open access
PDF file
GFGeraldo P. R. Filho
Geraldo P. R. Filho
JUJó Ueyama
Jó Ueyama
LVLeandro Villas
Leandro Villas
APAlex Sandro Roschildt Pinto
Alex Sandro Roschildt Pinto
VGVinícius Pereira Gonçalves
Vinícius Pereira Gonçalves
Torsten BraunTorsten Braun
Torsten Braun
In this paper, we propose an intelligent method, named the Novelty Detection Power Meter (NodePM), to detect novelties in electronic equipment monitored by a smart grid. Considering the entropy of each device monitored, which is calculated based on a Markov chain model, the proposed method identifies novelties through a machine learning algorithm. To this end, the NodePM is integrated into a platform for the remote monitoring of energy consumption, which consists of a wireless sensors network (WSN). It thus should be stressed that the experiments were conducted in real environments different from many related works, which are evaluated in simulated environments. In this sense, the results show that the NodePM reduces by 13.7% the power consumption of the equipment we monitored. In addition, the NodePM provides better efficiency to detect novelties when compared to an approach from the literature, surpassing it in different scenarios in all evaluations that were carried out.

1 October 2016
Verified
Conference Paper
Closed access
AAA.T.C. Andrade
A.T.C. Andrade
Carlos MontezCarlos Montez
Carlos Montez
Ricardo MoraesRicardo Moraes
Ricardo Moraes
APAlex Sandro Roschildt Pinto
Alex Sandro Roschildt Pinto
Francisco VasquesFrancisco Vasques
Francisco Vasques
GSG. L. da Silva
G. L. da Silva
Wireless Sensor Networks (WSNs) arc susceptible to faults both in sensors and in communication. Information fusion techniques allow to extract precise information from a large amount of data. Detection, identification and treatment of outlier, in these techniques, is a key point. Outlier detection in WSNs is a challenge due to the low capacity of the nodes and low bandwidth of the network. This paper proposes a methodology that applies the clustering and lightweight statistics techniques for detection of outliers in WSNs. The assessment of the methodology involves a case study with temperature sensors in WSN nodes. The results show that this methodology is able to provide precise information, even in the presence of outliers.

31 August 2022 in Sensors
Verified
Journal Article
Open access
PDF file
LSLeandro Marcos da Silva
Leandro Marcos da Silva
HMHenrique Bonini de Britto Menezes
Henrique Bonini de Britto Menezes
MLMatheus dos Santos Luccas
Matheus dos Santos Luccas
CMChristian Mailer
Christian Mailer
APAlex Sandro Roschildt Pinto
Alex Sandro Roschildt Pinto
KBKalinka Regina Lucas Jaquie Castelo Branco
Kalinka Regina Lucas Jaquie Castelo Branco
Several market sectors are attracted by the potential of unmanned aerial vehicles (UAVs), such as delivery, agriculture, and cinema, among others. UAVs are becoming part of Internet of Things (IoT) networks in the development of autonomous and scalable solutions. However, these vehicles are gradually becoming attractive targets for cyberattacks. This study proposes the development of an efficient platform based on the Message Queuing Telemetry Transport (MQTT) protocol for UAV control and Denial-of-Service (DoS) detection embedded in the UAV system. For the efficiency test, latency, network and memory consumption on the platform were measured, in addition to the correlation between payload and delay time. The results of efficiency tests were collected for the three levels of quality of service (QoS). A strong correlation greater than 90% was found between delay and data size for all QoS levels, showing almost a linear proportion. In DoS detection, the best results were a true positive rate (TPR) of 0.97 with 16 features from the AWID2 dataset using LightGBM with Bayesian optimization and data balancing. Unlike other studies, the built platform shows efficiency for UAV control and guarantees security in the communication with the broker and in the Wi-Fi UAV network.