Vitor Souza - Academia.edu (original) (raw)

Papers by Vitor Souza

Anais do WER18 - Workshop em Engenharia de Requisitos, 2018

There is growing interest in software that can adapt their behavior to deal with deviations betwe... more There is growing interest in software that can adapt their behavior to deal with deviations between their outcome and their requirements at runtime. A systematic mapping of the literature on selfadaptation approaches based on requirements models revealed over 200 papers on this subject. However, there is still a lack of a formal and explicit representation of the concepts in this domain, which can lead to problems in communication, learning, problem-solving, interoperability, etc. To make a clear and precise description of this domain, this paper proposes RASO: the Requirements for Adaptive Systems Ontology. RASO was built using a well-established Ontology Engineering method, is grounded on a foundational ontology and reuses concepts from other software-related ontologies. The ontology was evaluated by mapping constructs from the most referenced approaches from the literature to its concepts, thus creating a path for interoperability among them.

2019 IEEE 20th International Conference on Information Reuse and Integration for Data Science (IRI), 2019

Ontologies have been successfully used to assign semantics in the Semantic Web context and to ena... more Ontologies have been successfully used to assign semantics in the Semantic Web context and to enable integration of data from different systems or different sources. However, building ontologies is not a trivial task. Ontology reuse can help in this matter. The search and selection of ontologies to be reused should consider the alignment between their scope and the scope of the ontology being developed. In this paper, we discuss how goal modeling can be helpful in this context and we propose GO-FOR, a framework in which goals are the central elements to promote ontology reuse. We introduce goal-oriented ontology patterns as a new type of pattern to be applied to develop ontologies in a goal-oriented approach. Results of the use of GO-FOR to build an ontology used to integrate water quality data are also shown in this paper.

This study was in two parts. The first part established and demonstrated a framework for pavement... more This study was in two parts. The first part established and demonstrated a framework for pavement data integration. This is critical for fulfilling QC/QA needs of INDOT's pavement management system, because the precision of the physical location references is a prerequisite for the reliable collection and interpretation of pavement data. Such consistency is often jeopardized because the data are collected at different years, and are affected by changes in the vendor, inventory, or referencing system or reference points. This study therefore developed a "lining-up" methodology to address this issue. The applicability of the developed methodology was demonstrated using 2012-2014 data from Indiana's highway network. The results showed that the errors in the unlined up data are significant as they mischaracterize the true pavement condition. This could lead to the reporting of unreliable information of road network condition to the decision makers, ultimately leading to inappropriate condition assessments and prescriptions. Benefits of the methodology reverberate throughout the management functions and processes associated with highway pavements in Indiana, including pavement performance modeling, optimal timing of maintenance, rehabilitation, and reconstruction (MRR), and assessment of the effectiveness of MRR treatments and schedules. The second part of the study developed correlations for the different types of pavement distresses using machine learning algorithms. That way, the severity of any one type of distress can be estimated based on known severity of other distresses at that location. The 2012-2014 data were from I-70, US-41, and US-52, and the distress types considered are cracking, rutting, faulting, and roughness. Models were developed to relate surface roughness (IRI) to pavement cracks, and between the different crack types, with resulting degrees of confidence that varied across the different crack types and road functional classes. In addition, for each functional class and for each crack type, models were built to relate crack depth to crack width. The concept can be applied to other distress types, such as spalling, bleeding, raveling, depression, shoving, stripping, potholes, and joint distresses, when appropriate data are available.

Proceedings of 37th International Cosmic Ray Conference — PoS(ICRC2021), 2021

Recent observations of two coherent radio pulses with the ANITA detector can be interpreted as st... more Recent observations of two coherent radio pulses with the ANITA detector can be interpreted as steeply upward-going cosmic-ray showers with energies of a few tenths of an EeV and remain unexplained. The Pierre Auger Observatory has a large exposure to such upward propagating shower-like events, and has used 14 years of its Fluorescence Detector (FD) data to perform a generic search for such events with elevation angles greater than 20 • from the horizon. Here this search is recast to constrain models generating high energy-leptons. For maximal flexibility, only the propagation, decay, and interactions of-leptons are treated in this analysis, meaning that the results are independent of the-production scenario. This treatment allows for the application of these results to the wide range of models producing-leptons that have been proposed to describe the "anomalous" ANITA events. The goal of this study is accomplished by generating-leptons within the Earth and its atmosphere with an intensity dependent on the media density. The zenith angle, location and calorimetric energy of any resulting-induced air showers are then used to calculate the exposure of the FD of the Pierre Auger Observatory to primaries. Differential limits as low as 10 −9 GeV s −1 cm −2 sr −1 to the flux of-leptons produced with less than a 50 km path length below the Earth's surface are reported for several zenith angle ranges and primary energy spectra. Full exposure and sensitivity information is provided, facilitating the application of these results to different-lepton production models.

Proceedings of the 25th International Congress of Mechanical Engineering, 2019

Advanced Science, Engineering and Medicine, 2020

This study analyzed the effects of photobiomodulation, on wrist extensor muscles when applied bef... more This study analyzed the effects of photobiomodulation, on wrist extensor muscles when applied before a fatigue protocol. Twenty-eight men participated in a crossover, blinded, and controlled trial. Subjects performed grip dynamometry associated with superficial electromyography of the extensor carpi radialis, extensor carpi ulnaris, and flexor digitorum superficialis, which was used to evaluate muscle recruitment pattern by median frequency. The initial assessment was performed with a onerepetition maximum test. Twenty-four hours later the allocation was performed in two moments, and randomization was initially performed with 28 volunteers, divided between the two groups: control group, and the Low-Level Laser Therapy (30 mW, 0.06 cm2, 20 J/cm2, 1.2 J per point, and total energy of 10.8 J). Median frequency demonstrated Extensor Carpi Ulnaris fatigue in the control group as well as when compared after the fatigue protocol in the laser group. Exhaustion time was greater in the laser ...

Arquivos Brasileiros de Cirurgia Digestiva Express, 2017

Principia: Caminhos da Iniciação Científica, 2020

A Neurociência é definida como uma área interdisciplinar da ciência comumente associada à Biologi... more A Neurociência é definida como uma área interdisciplinar da ciência comumente associada à Biologia, cujo objeto de estudo é o sistema nervoso em todos os seus aspectos. Diante do número crescente de informações que têm sido divulgadas atualmente nas mídias em todo o mundo, buscamos questionar: como a Educação no atual Ensino Médio está incluindo assuntos originários da Biologia no panorama das Neurociências em sala de aula e como os estudantes têm acesso a estes conteúdos fora das disciplinas curriculares. Este estudo traz a proposta de um trabalho multiplicador realizado por alunos do Ensino Médio, tendo como fonte de inspiração em seu título a obra Tempo de Despertar do neurologista Oliver Sacks. O objetivo foi conhecer e verificar se e por qual meio os estudantes de ensino médio têm acesso aos conteúdos de neurociências, além de proporcionar aos alunos das escolas participantes conhecimentos básicos sobre neurociências. Como metodologia foram aplicados questionários semiestrutur...

Anais do 14º Simpósio Brasileiro de Automação Inteligente, 2019

With the world becoming more technological, the use of computer programs for analysis and control... more With the world becoming more technological, the use of computer programs for analysis and control activities has been growing more and more. For this work, it is shown how a man-machine interface using the programming language Python manages to show the behavior of the electrical quantities of an induction motor, in which this interface shows the data of these quantities in graphs in real time or in a given interval of time using devices well known in electronics, such as: Arduino and frequency inverter. Resumo: Com o mundo cada vez mais tecnológico, o uso de programas computacionais para atividades de análise e controle vem crescendo cada vez mais. Para este trabalho, é mostrado como uma interface homem-máquina utilizando a linguagem de programação Python consegue mostrar o comportamento das grandezas elétricas de um Motor de Indução, na qual essa interface mostra os dados dessas grandezas em gráficos em tempo real ou em um dado intervalo de tempo utilizando dispositivos muito conhecidos na eletrônica, tais como: Arduino e Inversor de Frequência.

Proceedings of International Conference on Black Holes as Cosmic Batteries: UHECRs and Multimessenger Astronomy — PoS(BHCB2018), 2019

Lorentz invariance violation (LIV) introduced as a generic modification to particle dispersion re... more Lorentz invariance violation (LIV) introduced as a generic modification to particle dispersion relations can change the photon energy threshold of pair-production, which modifies the expected gamma-ray flux from astrophysical sources. In this work, we review this phenomenon and explore its consequences through the derived effects in the optical depth. Then, by looking for subluminal LIV signatures in TeV gamma-ray spectra, we present stringent limits to the LIV energy scale at leading order n=1 and 2. And finally, we present the predicted flux of GZK-photons including LIV, in the astrophysical scenario which best describes UHECR data.

Product Management & Development, 2018

Some activities in the Product Development Process (PDP) are repetitive and time consuming, worse... more Some activities in the Product Development Process (PDP) are repetitive and time consuming, worsen productivity. Time and cost reduction are achievable through increasing the automation level of such activities, e.g., through knowledge reuse acquired on previous projects. Tolerancing is among these activities where the lack of a systematized, automatic process, leads to rework and productivity loss; there is a need to improve the efficiency of this process, based on knowledge from previous projects. Research has been performed with this objective, but normally resulting in sophisticated processes and tools, hard to implement in less developed industries. This research proposes to fill this gap, by developing a tool to support designers during the tolerancing activity, by automatically indicating tolerances for the dimensions the designer wishes to determine, in the context of an industry that designs and produces laundry machines. This challenge was approached following Knowledge-based Engineering and Case Based Reasoning principles. The evaluation phase revealed that the usage of the tool by the designers resulted in a decrease of activity time of execution and improved the performance of tolerance definition.

International Journal of Advanced Operations Management, 2019

Sustainable supply chain design can be performed using optimisation strategies for minimising env... more Sustainable supply chain design can be performed using optimisation strategies for minimising environmental impacts while maximising profit. It is not clear how such strategies influence the resilience of a supply chain-its ability to handle disturbances without compromising its function. This research used the ecosystem network analysis (ENA) to evaluate the resilience during the design of a sugar beet supply chain. The ε-constraint method was used to solve a multi-objective, mixed integer linear programming (MOMILP) model. Results showed that ENA results are compromised when the strategy of minimising environmental impacts is used, due to the increased fragility of the configuration, compared with the configuration from the profit maximisation strategy. Sensitivity analysis also revealed that, when the number of facilities is increased, ENA results improve while profit is decreased. ENA showed an interesting potential to support the pursuit of balance between resilience and performance during early design stages.

Clinical Lymphoma Myeloma and Leukemia, 2017

Journal of Lasers in Medical Sciences, 2017

Introduction: The purpose of this study was to investigate the effect of low-level laser therapy ... more Introduction: The purpose of this study was to investigate the effect of low-level laser therapy (LLLT)-660 nm and 904 nm-before grip strength protocol in healthy subjects. Methods: The study included 45 healthy volunteers with an average age of 22.7 (±1.4) years, subdivided into the following groups, control group: grip strength training associated with placebo LLLT; 660 nm group: LLLT (660 nm, 20 J/cm 2 , power of 30 mW, and beam area of 0.06 cm 2 , continuous, energy 1.2 J, and exposure time 40 seconds per point) before grip strength training and 904 nm group: LLLT (904 nm, 10 J/cm 2 , peak power of 70 W and 0.13 cm 2 beam area, with pulsed beam 9.500 Hz and 30 seconds of exposure time per point and emitted energy 1.2 J) before grip strength training. The LLLT was timed to contact 10 points located in the region of the superficial and deep flexor muscles of the fingers, with a total energy of 12.0 J per session. For the strength training protocol, the volunteer exercised their fingers with the dominant hand on a small table, elbow flexed at 90°, forearm in neutral, using a light extension handle. The Oxford protocol was performed during four weeks. The grip strength was assessed using a dynamometer (Jamar™). The data were evaluated by the analysis of variance (ANOVA) statistical method. Results: In the comparison of intragroup evaluation, only the 904 nm group showed a difference compared to the baseline assessment after 4 weeks (P < 0.05), in the final intergroup evaluation, a difference was observed in the comparison between the control and 904 nm groups. Conclusion: In conclusion, LLLT (904 nm) applied before resistance training was effective in gaining grip strength when compared to LLLT (660 nm) and isolated strength training after 4 weeks.

Astroparticle Physics, 2016

In this paper we analyze the energy evolution of the muon content of air showers between 10 18.4 ... more In this paper we analyze the energy evolution of the muon content of air showers between 10 18.4 and 10 19.6 eV to be able to determine the most likely mass composition scenario from future number of muons measurements. The energy and primary mass evolution of the number of muons is studied based on the Heitler-Matthews model and Monte Carlo simulation of the air shower. A simple model to describe the evolution of the first and second moments of number of muons distributions is proposed and validated. An analysis approach based on the comparison between this model's predictions and data to discriminate among a set of composition scenarios is presented and tested with simulations. It is shown that the composition scenarios can be potentially discriminated under the conditions imposed by the method. The discrimination power of the proposed analysis is stable under systematic changes of the absolute number of muons from model predictions and on the scale of the reconstructed energy.

International Journal of Modern Physics E, 2007

Cosmic rays have always been an important tool to study particle interactions and astrophysics. I... more Cosmic rays have always been an important tool to study particle interactions and astrophysics. In this article, we are going to review the main results from this field in the energy range from 1016 to 1020 eV. Important results from the KASCADE and Pierre Auger Experiments are going to be shown and discussed. Some perspectives for the near future concerning new measurements are going to be presented.

The Journal of the Oregon Dental Association, 1969

JINST, 2012

We describe the experimental setup and the results of RAuger, a small radio-antenna array, consis... more We describe the experimental setup and the results of RAuger, a small radio-antenna array, consisting of three fully autonomous and self-triggered radio-detection stations, installed close to the center of the Surface Detector (SD) of the Pierre Auger Observatory in Argentina. The setup has been designed for the detection of the electric field strength of air showers initiated by ultra-high energy cosmic rays, without using an auxiliary trigger from another detection system. Installed in December 2006, RAuger was terminated in May 2010 after 65 registered coincidences with the SD. The sky map in local angular coordinates (i.e., zenith and azimuth angles) of these events reveals a strong azimuthal asymmetry which is in agreement with a mechanism dominated by a geomagnetic emission process. The correlation between the electric field and the energy of the primary cosmic ray is presented for the first time, in an energy range covering two orders of magnitude between 0.1 EeV and 10 EeV. It is demonstrated that this setup is relatively more sensitive to inclined showers, with respect to the SD. In addition to these results, which underline the potential of the radio-detection technique, important information about the general behavior of self-triggering radio-detection systems has been obtained. In particular, we will discuss radio self-triggering under varying local electric-field conditions.

Communication …, 2011

... Alessandro Ferreira D'Ippolito, Ana Maria Mendes Sodré, José Felipe Almeida e Vitor Sous... more ... Alessandro Ferreira D'Ippolito, Ana Maria Mendes Sodré, José Felipe Almeida e Vitor Sousa. ... A partir deste kit foi possível gerar o diagrama de irradiação da antena quadra cúbica, utilizando a mesma como receptora e uma yagi-uda de 6 elementos como a transmissora ...