David Barbosa

David Barbosa


Research Focus & Metrics

Academic Career Length

10Years (2017-Present)

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

Representative Publications

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29 November 2017 in Energies
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Journal Article
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DBDavid Barbosa
David Barbosa
Carolina AffonsoCarolina Affonso
Carolina Affonso
Roberto Célio Limão OliveiraRoberto Célio Limão Oliveira
Roberto Célio Limão Oliveira
JMJorge Moya
Jorge Moya
JLJandecy Cabral Leite
Jandecy Cabral Leite
JFJosé Carlos Reston Filho
José Carlos Reston Filho
Generation of electric energy through wind turbines is one of the practically inexhaustible alternatives of generation. It is considered a source of clean energy, but still needs a lot of research for the development of science and technologies that ensures uniformity in generation, providing a greater participation of this source in the energy matrix, since the wind presents abrupt variations in speed, density and other important variables. In wind-based electrical systems, it is essential to predict at least one day in advance the future values of wind behavior, in order to evaluate the availability of energy for the next period, which is relevant information in the dispatch of the generating units and in the control of the electrical system. This paper develops ultra-short, short, medium and long-term prediction models of wind speed, based on computational intelligence techniques, using artificial neural network models, Autoregressive Integrated Moving Average (ARIMA) and hybrid models including forecasting using wavelets. For the application of the methodology, the meteorological variables of the database of the national organization system of environmental data (SONDA), Petrolina station, from 1 January 2004 to 31 March 2017, were used. A comparison among results by different used approaches is also done and it is also predicted the possibility of power and energy generation using a certain kind of wind generator.

1 October 2018 in IEEE Access
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Journal Article
Open access
DBDavid Barbosa
David Barbosa
Carolina AffonsoCarolina Affonso
Carolina Affonso
RORoberto C. L. Oliveira
Roberto C. L. Oliveira
JFJose C. R. Filho
Jose C. R. Filho
This paper proposes a hybrid approach based on seasonal autoregressive integrated moving average (SARIMA) and neural networks for multi-step ahead wind speed forecasting using explanatory variables. In the proposed model, explanatory variables are first predicted, and wind speed forecasting is performed taking into account these forecasted values and wind speed historical series. The multi-step ahead forecasting is achieved recursively, by using the first forecasted value as input to obtain the next forecasting value. The proposed approach is tested using historical records of meteorological data collected from two real-world locations in Brazil. In order to demonstrate accuracy and effectiveness of the proposed approach, the results are compared with other techniques, such as neural networks, SARIMA, and SARIMA+wavelet. Simulation results reveal that the proposed hybrid forecasting method outperforms these popular algorithms for different forecasting horizons with higher accuracy.

1 November 2019 in International Journal for Innovation Education and Research
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Journal Article
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ALAlessandro de Araujo Leão
Alessandro de Araujo Leão
LCLuciano dos Santos Cabral
Luciano dos Santos Cabral
RGRilmar Pereira Gomes
Rilmar Pereira Gomes
BGBruno Pereira Gonçalves
Bruno Pereira Gonçalves
JOJean Mark Lobo de Oliveira
Jean Mark Lobo de Oliveira
DBDavid Barbosa
David Barbosa
Given the prospective employment scenario that a society faces from the end of various areas due to various factors such as automation, new labor rights, lack or creation of new audiences, a shared economy caused in the midst of all this and It has become an option for the livelihood of many Manauaras. With the advancement of technology many changes occur in the way urban society uses its profits to generate income, it causes or disappears some professions, an interruption of others and the emergence of several. It was chosen to measure the data or the food delivery application that uber eats, which has about a year of use in Manaus, or even the concept of new forms of work organization, their deliverers, use modal and are directed to your destinations via GPS. This study sought to understand what is leading part of society to register in the application that is based on the shared economy. For such a survey, a quantitative survey was conducted in Manaus City to collect data required at high food ordering points per application, through a field survey, information was collected from various professionals. As a result of the investigation it was possible to map the professional profile of people who are choosing to work with this economic economy, and increase the incidence of technology for the lives of these professionals, it was possible to measure what challenges this new way of earning money provides, what are the advantages they bring, if it has the same advantages and the socio-economic impact on the day to day of professionals. Finally, it was carried out by the authors who conducted the survey, where after it was completed, it was possible to complete the applications associated with the shared economy that use yes, a great work alternative using technology as a medium.

1 July 2024 in Revista de Gestão e Secretariado
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MSMarcio Rizonildo Aquino de Sousa
Marcio Rizonildo Aquino de Sousa
DBDavid Barbosa
David Barbosa
JLJandecy Cabral Leite
Jandecy Cabral Leite
HJHélio Andrade dos Santos Júnior
Hélio Andrade dos Santos Júnior
The integration of Industry 4.0 technologies into industrial production processes represents a significant evolution. This article explores the impact and benefits of this integration, showing how emerging technologies are revolutionizing traditional production methods. The methodology addresses the fundamental concepts of Industry 4.0, such as device interconnection, real-time data analysis, and intelligent automation, and examines specific technologies incorporated into manufacturing processes, such as the Internet of Things (IoT), Additive Manufacturing, Artificial Intelligence (AI), and Augmented Reality (AR). Case studies and practical examples illustrate the implementation of these technologies in various sectors, from precision parts manufacturing to mass production. Finally, the challenges and opportunities are discussed, as well as the future implications for the manufacturing industry. This article offers a view of the role of Industry 4.0 in industrial production processes, highlighting its importance for competitiveness and innovation in the digital world.

30 November 2019 in International Journal for Innovation Education and Research
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Journal Article
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RSReissa Sousa Silva
Reissa Sousa Silva
DBDavid Barbosa
David Barbosa
ACAlexandra Priscilla Tregue Costa
Alexandra Priscilla Tregue Costa
ASAntônio Estanislau Sanches
Antônio Estanislau Sanches
Market competitiveness has increased and companies are increasingly looking for methodologies that enable them to have higher productivity and organization at work, at low cost. More flexible and innovative processes and products are key to the survival and success of many companies. The importance of a study of Kaizen philosophy is due to the fact that it is based on continuous efforts to improve the system. Therefore, the present study aims to clarify the process of continuous improvement through the implementation of the Kaizen tool so that it can guide the productive improvement of companies in the Manaus (AM) industrial hub. This scientific article was elaborated, based on the bibliographic research resulting from an analysis, which considered the two-axis cross perspective - Kaizen philosophy and continuous improvement. This article demonstrates the Kaizen continuous improvement tool as it emerged and the benefits generated in environments that encourage learning and cooperation among individuals, working on human resource development so that improvement initiatives are truly continuous.

1 January 2019 in ITEGAM- Journal of Engineering and Technology for Industrial Applications (ITEGAM-JETIA)
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RCRafael Amilton Leite Colares
Rafael Amilton Leite Colares
DBDavid Barbosa
David Barbosa
JJJorge de Almeida Brito Junior
Jorge de Almeida Brito Junior
JCJhonathan Carvalho da Cruz
Jhonathan Carvalho da Cruz
CBCamily Murrieta Vasconcelos Oliveira Bezerra
Camily Murrieta Vasconcelos Oliveira Bezerra
PJPaulo Oliveira Siqueira Júnior
Paulo Oliveira Siqueira Júnior
This work of completion aimed to demonstrate the importance of the use of PPE in construction with awareness and guiding the use of personal protective equipment at the construction site area. It is estimated that the construction activity is responsible for many accidents, by requiring its employees to expose themselves to environmental hazards, such as: physical, chemical, biological, ergonomic and accidents. Considering that the Personal Protective Equipment PPE are important security items from working, since, in construction using the same becomes sporadic or non-existent on the part of service providers and employees, even if they have knowledge of the law and standards. During the study we can observe and note that the use of PPE is very important and essential in reducing the risks of accidents during the execution of the activities and their functionality, because the protection of the physical integrity and health of the employee is not isolated behavior, and these must have training and technical guidance on the appropriate use of personal protective equipment. It is understood that the lack of planning of a competent security system can cause occurrences of accidents, causing losses for low productivity and increased costs. Thus, it is evident the importance and prominence that has gained the use of PPE in construction, because this is a topic that has been evolving and requires continuous recycling of professionals in this area. Este trabajo de finalización tuvo como objetivo demostrar la importancia del uso de EPP en la construcción con conciencia y guiando el uso de equipos de protección personal en el área del sitio de construcción. Se estima que la actividad de construcción es responsable de muchos accidentes, al exigir a sus empleados que se expongan a riesgos ambientales, tales como: físicos, químicos, biológicos, ergonómicos y accidentes. Teniendo en cuenta que los equipos de protección personal PPE son elementos de seguridad importantes para el trabajo, ya que, en la construcción, el uso de los mismos se vuelve esporádico o inexistente por parte de los proveedores de servicios y empleados, incluso si tienen conocimiento de la ley y las normas. Durante el estudio podemos observar y observar que el uso de EPP es muy importante y esencial para reducir los riesgos de accidentes durante la ejecución de las actividades y su funcionalidad, ya que la protección de la integridad física y la salud del empleado no es un comportamiento aislado. , y estos deben tener capacitación y orientación técnica sobre el uso apropiado de los equipos de protección personal. Se entiende que la falta de planificación de un sistema de seguridad competente puede causar la ocurrencia de accidentes, causando pérdidas por baja productividad y mayores costos. Por lo tanto, es evidente la importancia y el protagonismo que se ha ganado el uso de EPP en la construcción, porque este es un tema que ha ido evolucionando y requiere un reciclaje continuo de profesionales en esta área. Este trabalho de conclusão teve como objetivo demonstrar a importância do uso de EPI na construção com consciência e orientando o uso de equipamentos de proteção individual na área do canteiro de obras. Estima-se que a atividade de construção seja responsável por muitos acidentes, exigindo que seus funcionários se exponham a riscos ambientais, como: físico, químico, biológico, ergonômico e acidentes. Considerando que o equipamento de proteção individual (EPI) é um item importante de segurança do trabalho, pois, na construção, o uso torna-se esporádico ou inexistente por parte dos prestadores de serviços e funcionários, mesmo que possuam conhecimento da lei e das normas. Durante o estudo, podemos observar e observar que o uso de EPI é muito importante e essencial para reduzir os riscos de acidentes durante a execução das atividades e sua funcionalidade, pois a proteção da integridade física e da saúde do funcionário não é um comportamento isolado , e estes devem ter treinamento e orientação técnica sobre o uso adequado de equipamentos de proteção individual. Entende-se que a falta de planejamento de um sistema de segurança competente pode causar ocorrências de acidentes, causando perdas por baixa produtividade e aumento de custos. Assim, fica evidente a importância e o destaque que ganhou o uso de EPIs na construção civil, pois esse é um tema que vem evoluindo e requer reciclagem contínua dos profissionais dessa área.