Mateus Ritta Silva - Academia.edu (original) (raw)
Papers by Mateus Ritta Silva
Proceedings of the 23rd International Conference on Enterprise Information Systems
Wearable Computing brings up novel methods and appliances to solve various problems in society’s ... more Wearable Computing brings up novel methods and appliances to solve various problems in society’s routine tasks. Also, it brings the possibility of enhancing human abilities and perception throughout the execution of specialist activities. Finally, the flexibility and modularity of wearable devices allow the idealization of multiple appliances. In 2020, the world faced a global threat from the COVID-19 pandemic. Healthcare professionals are directly exposed to contamination and therefore require attention. In this work, we propose a novel wearable appliance to aid healthcare professionals working on the frontline of pandemic control. This new approach aids the professional in daily tasks and monitors his health for early signs of contamination. Our results display the system feasibility and constraints using a prototype and indicate initial restrictions for this appliance. This proposal also works as a benchmark for the aid in health monitoring in general hazardous
2019 IEEE 43rd Annual Computer Software and Applications Conference (COMPSAC)
Wearable Systems are important tools to increase the reach of Computer Science into helping other... more Wearable Systems are important tools to increase the reach of Computer Science into helping other research fields. In this context, System-on-Chips with embedded low-power processors are useful tools to develop prototypes and solutions. Nevertheless, the limited resources of these systems create a limit on the speed and quality of the gathered information. A possible alternative for this problem is to increase the number of embedded computers composing the system, distributing the workload between different nodes. In this study, we analyze the effect of increased distribution on the main wearable constraints using a prototype. In order to investigate the energetic impact of increased distribution, we perform a long-run test. Also, we propose a novel testbed based on the Quality-of-Service (QoS) concepts and use it to analyze the effect of this increased distribution in communication and synchronization performance.
Proceedings of the 23rd International Conference on Enterprise Information Systems, 2021
Proceedings of the 23rd International Conference on Enterprise Information Systems, 2021
The mining and metallurgical industry seeks to adapt to Industry 4.0 with the implementation of A... more The mining and metallurgical industry seeks to adapt to Industry 4.0 with the implementation of Artificial Intelligence in the processes. The purpose of this paper is to develop the first steps of an Artificial Intelligence in Deep Learning with Edge Computing to recognize the quasi-particles from the Hybrid Pelletized Sinter (HPS) process and provide its particle size distribution. We trained our model with the aXeleRate tool using the Keras-Tensorflow framework and the MobileNet architecture and tested it with an embedded system using the SiPEED MaiX Dock board. Our model obtained 98.60% accuracy in training validation using real and synthetic images and 100% accuracy in tests with synthetic images and 70% recall. The tests' results indicate the feasibility of the proposed system, but with probable overfitting in the training stage.
Proceedings of the 23rd International Conference on Enterprise Information Systems, 2021
Leaf damage estimation is an important research method, metric, and topic regarding both agricult... more Leaf damage estimation is an important research method, metric, and topic regarding both agricultural and ecological studies. The majority of previous studies that approach shape reconstruction work with parametric curves, lacking generality when treating leaves with different shapes. Other appliances try to calculate the damage without estimating the original leaf form. In this work, we propose a procedure to predict the original leaf shape and calculate its defoliation based on a Conditional Generative Adversarial Network (Conditional GAN). We trained and validated the algorithm with a dataset with leaf images from 33 different species. Also, we tested the produced model in another dataset, containing images from leaves from 153 different species. The results indicate that this model is better than the literature, and the solution potentially works with different leaf shapes, even from untrained species.
Requisitos à conversão da prisão preventiva em prisão domiciliar prevista no artigo 318, iv e v, ... more Requisitos à conversão da prisão preventiva em prisão domiciliar prevista no artigo 318, iv e v, do Código de Processo Penal: análise da decisão proferida pela 2ª turma do Supremo Tribunal Federal no Habeas Corpus 143.641/SP em fevereiro de 2018 Requirements to conversion of preventive detention to house arrest as article 318, iv and v, of Código de Processo Penal: decision pronouced by 2 nd turma of Supremo Tribunal Federal in Habeas Corpus 143.641/SP analysis february, 2018
The Industry 4.0 concept relies on the integration of its composing elements using modern tools. ... more The Industry 4.0 concept relies on the integration of its composing elements using modern tools. These modern industrial plants must consider concepts like the Internet of Things, Cyber-Physical Systems and Smart Devices. The main features involved in these architectures are the local control, machine-to-machine information exchange, and human-to-machine interface through virtualization. The integration of these elements to create a connected environment presents a challenge to developers and engineers. In this text, we perform a theoretical analysis of the main constraints and challenges in designing and implementing novel applications using digital twins, robots, wearable devices, and other control interfaces. To evaluate the theoretical approach, we performed a series of tests in prototype environments.
The work of Andrea Pozzo (1642-1709) is consistently recognized for disseminating a language spec... more The work of Andrea Pozzo (1642-1709) is consistently recognized for disseminating a language specific to the quadratura. His treatise Perspectiva Pictorum et Architectorum (1693-1700) achieved wide circulation in the early XVIII century, as attested by its numerous editions, versions, and reproductions. Despite the little documented presence of the treatise in Portuguese America, and specifically in Minas Gerais, its influence is clearly evident in the orientation of perspective paintings. In this context, elements that denote the specific use of Pozzo s treatise are presented in various paintings made between the XVIII and XIX centuries in different regions of Minas Gerais.
Proceedings of the 23rd International Conference on Enterprise Information Systems, 2021
The Industry 4.0 revolution brings up novel concepts and restraints when proposing and designing ... more The Industry 4.0 revolution brings up novel concepts and restraints when proposing and designing novel applications. Although its perspectives are new, the main restraints must also observe conservative constraints of the industrial processes, such as real-time capability and asynchronous design. Among the main tools to develop cutting-edge industrial applications, a novel relevant approach to presenting information and interacting with the Digital Twins (DTs) process. This work evaluates how to model and measure the primary Industry 4.0 constraints in designing novel applications using DTs. This work separates the restraints into two categories: asynchronous and synchronous requirements. First, this work designs a high-level DT system communication flow through a Petri Net model to analyze the asynchronous requirements. Then, it performs a synchronous test with a physical instance of the proposed model. The results display the requirements for safe operation on the case-study system regarding timing and modeling constraints.
Sensors, 2021
Ecological environments research helps to assess the impacts on forests and managing forests. The... more Ecological environments research helps to assess the impacts on forests and managing forests. The usage of novel software and hardware technologies enforces the solution of tasks related to this problem. In addition, the lack of connectivity for large data throughput raises the demand for edge-computing-based solutions towards this goal. Therefore, in this work, we evaluate the opportunity of using a Wearable edge AI concept in a forest environment. For this matter, we propose a new approach to the hardware/software co-design process. We also address the possibility of creating wearable edge AI, where the wireless personal and body area networks are platforms for building applications using edge AI. Finally, we evaluate a case study to test the possibility of performing an edge AI task in a wearable-based environment. Thus, in this work, we evaluate the system to achieve the desired task, the hardware resource and performance, and the network latency associated with each part of the...
2018 VIII Brazilian Symposium on Computing Systems Engineering (SBESC), 2018
The measurements of biotic and abiotic parameters in natural conditions are essential for ecologi... more The measurements of biotic and abiotic parameters in natural conditions are essential for ecologists. Wearable devices are changing the way how scientists can measure their study subject in extreme conditions. In this work, a new model of wearable device is presented to be used during the tree climbing performed by ecologists. The device architecture is designed to expand the perception of the researcher, using sensors as LIDAR and IMU units to present further information during research.
2021 IEEE International Symposium on Circuits and Systems (ISCAS), 2021
Coarse-grained reconfigurable architectures (CGRA) are a power-efficient approach for hardware ac... more Coarse-grained reconfigurable architectures (CGRA) are a power-efficient approach for hardware accelerators. However, there are few EDA tools for CGRA. We develop hardware-based placement and routing (P&R) for fully-pipelined CGRA mapped as an FPGA overlay. The key idea is to use the available FPGA resources to replicate several mapping units, thus exploring parallel execution, area/execution time trade-offs, and achieving near-optimal mapping solutions. Furthermore, our P&R provides portability and an incremental run-time approach. In comparison to VPR and CGRA-ME tools and a time-multiplexer approach, our spatial mapping reduces the P&R execution time, and it improves the performance up to hundreds of Gops/s by using fully-pipelined architectures.
Anais de XXXIV Simpósio Brasileiro de Telecomunicações, 2016
Resumo-Este artigo apresenta um método capaz de detectar tentativas de fraudes em dispositivos de... more Resumo-Este artigo apresenta um método capaz de detectar tentativas de fraudes em dispositivos de aquisição de impressões digitais multivista sem toque. Para tanto, um classificador baseado em redes neurais artificiais e descritores de textura ILBP (Padrão Binário Local Aperfeiçoado) e GLCM (Matriz de Co-ocorrência de Níveis de Cinza) foi desenvolvido. O intuitó e classificar as imagens de impressões digitais adquiridas como sendo de dedos reais, dedos oclusos ou dedos não reais. Para treinar o classificador proposto, uma base de dados foi criada. A base de dados conta com um conjunto de 840 imagens, sendo 300 imagens de dedos reais, 60 imagens de dedos oclusos e 480 imagens de objetos que não são dedos. O classificador foi testado em 4 diferentes cenários, sendo que cada um utiliza um subconjunto de imagens do banco de dados. O primeiro cenário utiliza apenas as categorias "não dedo" e "dedo real", apresentando uma taxa de acerto de 98,11%. O segundo cenário utiliza as categorias "dedo ocluso" e "dedo real", apresentando uma taxa de acerto de 100%. O terceiro cenário utiliza "não dedo" e "dedo ocluso", apresentando uma taxa de acerto de 98,91%. Por fim, o quarto cenário utiliza todo o banco de dados, apresentando uma taxa de acerto de 93,71%.
RENOTE, 2009
O uso de jogos educativos se destaca como uma ferramenta bastante útilpara o ensino/aprendizado n... more O uso de jogos educativos se destaca como uma ferramenta bastante útilpara o ensino/aprendizado no contexto de diversas áreas e públicos. No caso depessoas com necessidades especiais, isso é especialmente importante, pois além defacilitar o aprendizado e motivar o aprendiz, contribui ainda para a inclusão digitaldeste tipo de público. Este artigo apresenta todas as atividades já desenvolvidas noprocesso de criação de um ambiente lúdico baseado em jogos para pessoas comnecessidades especiais, envolvendo a realização de vários experimentos como auxíliono levantamento de requisitos para estes jogos.
RENOTE, 2009
O uso de jogos educativos se destaca como uma ferramenta bastante útilpara o ensino/aprendizado n... more O uso de jogos educativos se destaca como uma ferramenta bastante útilpara o ensino/aprendizado no contexto de diversas áreas e públicos. No caso depessoas com necessidades especiais, isso é especialmente importante, pois além defacilitar o aprendizado e motivar o aprendiz, contribui ainda para a inclusão digitaldeste tipo de público. Este artigo apresenta todas as atividades já desenvolvidas noprocesso de criação de um ambiente lúdico baseado em jogos para pessoas comnecessidades especiais, envolvendo a realização de vários experimentos como auxíliono levantamento de requisitos para estes jogos.
International journal of biological macromolecules, Jan 8, 2018
Adsorption has been explored to minimize the pollution, a serious environmental problem. This wor... more Adsorption has been explored to minimize the pollution, a serious environmental problem. This work relates the preparation of diethylenetriamine-modified cellulose (DetaCel) by reacting phthalic anhydride-modified cellulose (PhCel) with diethylenetriamine (Deta). Materials were characterized by Elemental Analysis and results showed 7.77 ± 0.03% of nitrogen for DetaCel. The main bands observed for DetaCel by Fourier-Transform Infrared Spectroscopy (FTIR) were attributed to CN deformation (1330 cm) and NH stretching of amide (3400 cm), while Solid State Nuclear Magnetic Resonance of C (C{H}CP-MAS NMR) showed a signal at 164.6 ppm characteristic of amide group. Crystallinity index obtained by X-ray Diffraction (XRD) was the order Cel > PhCel > DetaCel and the Thermogravimetry (TG) indicated reverse order obtained in XRD. Adsorbent matrices were employed to remove methyl orange (MO) and eosin (EY) dyes in aqueous medium. Data obtained experimentally from kinetic study had a better...
2016 23° Encontro Português de Computação Gráfica e Interação (EPCGI), 2016
This paper presents a solution that allows the users of a certain place to hear the sound of a TV... more This paper presents a solution that allows the users of a certain place to hear the sound of a TV, even if they are in a noisy environment. This gives the users a more efficient way to hear the sound of televisions in places where the volume of noise is high. The solution, named "s_TV" comprises two modules: the transmitter and the receiver. The transmitter module is composed by equipment to capture and transmit sound from the TV to smartphones/tablets Android. This equipment is connected to the TV and a router and transmits the sound through a network to Android devices. It can also transmit other types of information, such as the TV settings. An application was also developed to allow the configuration and handling of the servers that emit the sound of televisions. The receiver module resulted in a mobile application that allows the user to choose in a very simple and intuitive way, a particular TV channel and, subsequently, receive and play the sound on the mobile device, in real time. In addition, other features are available such as recording the sound played and sharing it on social networks. The tests conducted indicate that the solution may also be used in real-world scenarios with a scalable number of users, without compromising the services available on existing Wi-Fi networks.
Semina: Ciências Agrárias, 2016
The objective of this study was to evaluate forage production and root accumulation in Brachiaria... more The objective of this study was to evaluate forage production and root accumulation in Brachiaria decumbens cv. Basilisk with swine wastewater as a fertilizer. The experiment was conducted into a greenhouse in Federal Institute of Education, Science and Technology of Southeast of Minas Gerais, Rio Pomba Campus. Pots with 6 dm-3 volumes were used as experimental units. Were used a randomized block design with four replications. Were studied four swine waste doses (0, 225, 450 and 675mL pot-1) over four regrowth cycles. The dry matter production of the aerial part, forage accumulation rate, crude protein and dry matter production of roots increased with the highest swine waste doses being around 670, 742, 160 and 465% respectively from lower to higher dose. There was interaction between swine waste and regrowth cycles for plant height and tillering, and in all regrowth cycles responded positively with increasing swine waste doses. Applying swine waste on pastures is therefore a viable...
Revista Vértices, 2013
O objetivo do trabalho foi avaliar o efeito da aplicação de Água Residuária de Suínos (ARS) sobre... more O objetivo do trabalho foi avaliar o efeito da aplicação de Água Residuária de Suínos (ARS) sobre as propriedades químicas e físicas de um Latossolo Vermelho-Amarelo distrófico. O experimento foi realizado em condições de campo, com os seguintes tratamentos: T1 = 0; T2 = 50; T3 = 100; T4 = 150 m3.ha.ano-1 de ARS. A ARS promoveu aumento da acidez do solo na camada de 20-40 cm, e diminuição da quantidade de fósforo adsorvido à argila em ambas as camadas, 0-20 e 20-40 cm. A porcentagem de argila dispersa em água aumentou na camada de 20-40 cm, indicando que a aplicação permanente da ARS pode propiciar riscos de redução da permeabilidade do solo.
SSRN Electronic Journal, 2011
ABSTRACT The paper aims to analyze the degree of popular participation in e-government and accoun... more ABSTRACT The paper aims to analyze the degree of popular participation in e-government and accountability mechanisms. In order to answer the research question, which discusses the level of graduate students participation in those devices, a survey was adopted. Questionnaires were applied to 51 students in June, 2010 and the results indicate that the problem of popular participation in e-government lies not in the lack of technology, but on the political culture of the citizens and on the stage of development of national politics.
Proceedings of the 23rd International Conference on Enterprise Information Systems
Wearable Computing brings up novel methods and appliances to solve various problems in society’s ... more Wearable Computing brings up novel methods and appliances to solve various problems in society’s routine tasks. Also, it brings the possibility of enhancing human abilities and perception throughout the execution of specialist activities. Finally, the flexibility and modularity of wearable devices allow the idealization of multiple appliances. In 2020, the world faced a global threat from the COVID-19 pandemic. Healthcare professionals are directly exposed to contamination and therefore require attention. In this work, we propose a novel wearable appliance to aid healthcare professionals working on the frontline of pandemic control. This new approach aids the professional in daily tasks and monitors his health for early signs of contamination. Our results display the system feasibility and constraints using a prototype and indicate initial restrictions for this appliance. This proposal also works as a benchmark for the aid in health monitoring in general hazardous
2019 IEEE 43rd Annual Computer Software and Applications Conference (COMPSAC)
Wearable Systems are important tools to increase the reach of Computer Science into helping other... more Wearable Systems are important tools to increase the reach of Computer Science into helping other research fields. In this context, System-on-Chips with embedded low-power processors are useful tools to develop prototypes and solutions. Nevertheless, the limited resources of these systems create a limit on the speed and quality of the gathered information. A possible alternative for this problem is to increase the number of embedded computers composing the system, distributing the workload between different nodes. In this study, we analyze the effect of increased distribution on the main wearable constraints using a prototype. In order to investigate the energetic impact of increased distribution, we perform a long-run test. Also, we propose a novel testbed based on the Quality-of-Service (QoS) concepts and use it to analyze the effect of this increased distribution in communication and synchronization performance.
Proceedings of the 23rd International Conference on Enterprise Information Systems, 2021
Proceedings of the 23rd International Conference on Enterprise Information Systems, 2021
The mining and metallurgical industry seeks to adapt to Industry 4.0 with the implementation of A... more The mining and metallurgical industry seeks to adapt to Industry 4.0 with the implementation of Artificial Intelligence in the processes. The purpose of this paper is to develop the first steps of an Artificial Intelligence in Deep Learning with Edge Computing to recognize the quasi-particles from the Hybrid Pelletized Sinter (HPS) process and provide its particle size distribution. We trained our model with the aXeleRate tool using the Keras-Tensorflow framework and the MobileNet architecture and tested it with an embedded system using the SiPEED MaiX Dock board. Our model obtained 98.60% accuracy in training validation using real and synthetic images and 100% accuracy in tests with synthetic images and 70% recall. The tests' results indicate the feasibility of the proposed system, but with probable overfitting in the training stage.
Proceedings of the 23rd International Conference on Enterprise Information Systems, 2021
Leaf damage estimation is an important research method, metric, and topic regarding both agricult... more Leaf damage estimation is an important research method, metric, and topic regarding both agricultural and ecological studies. The majority of previous studies that approach shape reconstruction work with parametric curves, lacking generality when treating leaves with different shapes. Other appliances try to calculate the damage without estimating the original leaf form. In this work, we propose a procedure to predict the original leaf shape and calculate its defoliation based on a Conditional Generative Adversarial Network (Conditional GAN). We trained and validated the algorithm with a dataset with leaf images from 33 different species. Also, we tested the produced model in another dataset, containing images from leaves from 153 different species. The results indicate that this model is better than the literature, and the solution potentially works with different leaf shapes, even from untrained species.
Requisitos à conversão da prisão preventiva em prisão domiciliar prevista no artigo 318, iv e v, ... more Requisitos à conversão da prisão preventiva em prisão domiciliar prevista no artigo 318, iv e v, do Código de Processo Penal: análise da decisão proferida pela 2ª turma do Supremo Tribunal Federal no Habeas Corpus 143.641/SP em fevereiro de 2018 Requirements to conversion of preventive detention to house arrest as article 318, iv and v, of Código de Processo Penal: decision pronouced by 2 nd turma of Supremo Tribunal Federal in Habeas Corpus 143.641/SP analysis february, 2018
The Industry 4.0 concept relies on the integration of its composing elements using modern tools. ... more The Industry 4.0 concept relies on the integration of its composing elements using modern tools. These modern industrial plants must consider concepts like the Internet of Things, Cyber-Physical Systems and Smart Devices. The main features involved in these architectures are the local control, machine-to-machine information exchange, and human-to-machine interface through virtualization. The integration of these elements to create a connected environment presents a challenge to developers and engineers. In this text, we perform a theoretical analysis of the main constraints and challenges in designing and implementing novel applications using digital twins, robots, wearable devices, and other control interfaces. To evaluate the theoretical approach, we performed a series of tests in prototype environments.
The work of Andrea Pozzo (1642-1709) is consistently recognized for disseminating a language spec... more The work of Andrea Pozzo (1642-1709) is consistently recognized for disseminating a language specific to the quadratura. His treatise Perspectiva Pictorum et Architectorum (1693-1700) achieved wide circulation in the early XVIII century, as attested by its numerous editions, versions, and reproductions. Despite the little documented presence of the treatise in Portuguese America, and specifically in Minas Gerais, its influence is clearly evident in the orientation of perspective paintings. In this context, elements that denote the specific use of Pozzo s treatise are presented in various paintings made between the XVIII and XIX centuries in different regions of Minas Gerais.
Proceedings of the 23rd International Conference on Enterprise Information Systems, 2021
The Industry 4.0 revolution brings up novel concepts and restraints when proposing and designing ... more The Industry 4.0 revolution brings up novel concepts and restraints when proposing and designing novel applications. Although its perspectives are new, the main restraints must also observe conservative constraints of the industrial processes, such as real-time capability and asynchronous design. Among the main tools to develop cutting-edge industrial applications, a novel relevant approach to presenting information and interacting with the Digital Twins (DTs) process. This work evaluates how to model and measure the primary Industry 4.0 constraints in designing novel applications using DTs. This work separates the restraints into two categories: asynchronous and synchronous requirements. First, this work designs a high-level DT system communication flow through a Petri Net model to analyze the asynchronous requirements. Then, it performs a synchronous test with a physical instance of the proposed model. The results display the requirements for safe operation on the case-study system regarding timing and modeling constraints.
Sensors, 2021
Ecological environments research helps to assess the impacts on forests and managing forests. The... more Ecological environments research helps to assess the impacts on forests and managing forests. The usage of novel software and hardware technologies enforces the solution of tasks related to this problem. In addition, the lack of connectivity for large data throughput raises the demand for edge-computing-based solutions towards this goal. Therefore, in this work, we evaluate the opportunity of using a Wearable edge AI concept in a forest environment. For this matter, we propose a new approach to the hardware/software co-design process. We also address the possibility of creating wearable edge AI, where the wireless personal and body area networks are platforms for building applications using edge AI. Finally, we evaluate a case study to test the possibility of performing an edge AI task in a wearable-based environment. Thus, in this work, we evaluate the system to achieve the desired task, the hardware resource and performance, and the network latency associated with each part of the...
2018 VIII Brazilian Symposium on Computing Systems Engineering (SBESC), 2018
The measurements of biotic and abiotic parameters in natural conditions are essential for ecologi... more The measurements of biotic and abiotic parameters in natural conditions are essential for ecologists. Wearable devices are changing the way how scientists can measure their study subject in extreme conditions. In this work, a new model of wearable device is presented to be used during the tree climbing performed by ecologists. The device architecture is designed to expand the perception of the researcher, using sensors as LIDAR and IMU units to present further information during research.
2021 IEEE International Symposium on Circuits and Systems (ISCAS), 2021
Coarse-grained reconfigurable architectures (CGRA) are a power-efficient approach for hardware ac... more Coarse-grained reconfigurable architectures (CGRA) are a power-efficient approach for hardware accelerators. However, there are few EDA tools for CGRA. We develop hardware-based placement and routing (P&R) for fully-pipelined CGRA mapped as an FPGA overlay. The key idea is to use the available FPGA resources to replicate several mapping units, thus exploring parallel execution, area/execution time trade-offs, and achieving near-optimal mapping solutions. Furthermore, our P&R provides portability and an incremental run-time approach. In comparison to VPR and CGRA-ME tools and a time-multiplexer approach, our spatial mapping reduces the P&R execution time, and it improves the performance up to hundreds of Gops/s by using fully-pipelined architectures.
Anais de XXXIV Simpósio Brasileiro de Telecomunicações, 2016
Resumo-Este artigo apresenta um método capaz de detectar tentativas de fraudes em dispositivos de... more Resumo-Este artigo apresenta um método capaz de detectar tentativas de fraudes em dispositivos de aquisição de impressões digitais multivista sem toque. Para tanto, um classificador baseado em redes neurais artificiais e descritores de textura ILBP (Padrão Binário Local Aperfeiçoado) e GLCM (Matriz de Co-ocorrência de Níveis de Cinza) foi desenvolvido. O intuitó e classificar as imagens de impressões digitais adquiridas como sendo de dedos reais, dedos oclusos ou dedos não reais. Para treinar o classificador proposto, uma base de dados foi criada. A base de dados conta com um conjunto de 840 imagens, sendo 300 imagens de dedos reais, 60 imagens de dedos oclusos e 480 imagens de objetos que não são dedos. O classificador foi testado em 4 diferentes cenários, sendo que cada um utiliza um subconjunto de imagens do banco de dados. O primeiro cenário utiliza apenas as categorias "não dedo" e "dedo real", apresentando uma taxa de acerto de 98,11%. O segundo cenário utiliza as categorias "dedo ocluso" e "dedo real", apresentando uma taxa de acerto de 100%. O terceiro cenário utiliza "não dedo" e "dedo ocluso", apresentando uma taxa de acerto de 98,91%. Por fim, o quarto cenário utiliza todo o banco de dados, apresentando uma taxa de acerto de 93,71%.
RENOTE, 2009
O uso de jogos educativos se destaca como uma ferramenta bastante útilpara o ensino/aprendizado n... more O uso de jogos educativos se destaca como uma ferramenta bastante útilpara o ensino/aprendizado no contexto de diversas áreas e públicos. No caso depessoas com necessidades especiais, isso é especialmente importante, pois além defacilitar o aprendizado e motivar o aprendiz, contribui ainda para a inclusão digitaldeste tipo de público. Este artigo apresenta todas as atividades já desenvolvidas noprocesso de criação de um ambiente lúdico baseado em jogos para pessoas comnecessidades especiais, envolvendo a realização de vários experimentos como auxíliono levantamento de requisitos para estes jogos.
RENOTE, 2009
O uso de jogos educativos se destaca como uma ferramenta bastante útilpara o ensino/aprendizado n... more O uso de jogos educativos se destaca como uma ferramenta bastante útilpara o ensino/aprendizado no contexto de diversas áreas e públicos. No caso depessoas com necessidades especiais, isso é especialmente importante, pois além defacilitar o aprendizado e motivar o aprendiz, contribui ainda para a inclusão digitaldeste tipo de público. Este artigo apresenta todas as atividades já desenvolvidas noprocesso de criação de um ambiente lúdico baseado em jogos para pessoas comnecessidades especiais, envolvendo a realização de vários experimentos como auxíliono levantamento de requisitos para estes jogos.
International journal of biological macromolecules, Jan 8, 2018
Adsorption has been explored to minimize the pollution, a serious environmental problem. This wor... more Adsorption has been explored to minimize the pollution, a serious environmental problem. This work relates the preparation of diethylenetriamine-modified cellulose (DetaCel) by reacting phthalic anhydride-modified cellulose (PhCel) with diethylenetriamine (Deta). Materials were characterized by Elemental Analysis and results showed 7.77 ± 0.03% of nitrogen for DetaCel. The main bands observed for DetaCel by Fourier-Transform Infrared Spectroscopy (FTIR) were attributed to CN deformation (1330 cm) and NH stretching of amide (3400 cm), while Solid State Nuclear Magnetic Resonance of C (C{H}CP-MAS NMR) showed a signal at 164.6 ppm characteristic of amide group. Crystallinity index obtained by X-ray Diffraction (XRD) was the order Cel > PhCel > DetaCel and the Thermogravimetry (TG) indicated reverse order obtained in XRD. Adsorbent matrices were employed to remove methyl orange (MO) and eosin (EY) dyes in aqueous medium. Data obtained experimentally from kinetic study had a better...
2016 23° Encontro Português de Computação Gráfica e Interação (EPCGI), 2016
This paper presents a solution that allows the users of a certain place to hear the sound of a TV... more This paper presents a solution that allows the users of a certain place to hear the sound of a TV, even if they are in a noisy environment. This gives the users a more efficient way to hear the sound of televisions in places where the volume of noise is high. The solution, named "s_TV" comprises two modules: the transmitter and the receiver. The transmitter module is composed by equipment to capture and transmit sound from the TV to smartphones/tablets Android. This equipment is connected to the TV and a router and transmits the sound through a network to Android devices. It can also transmit other types of information, such as the TV settings. An application was also developed to allow the configuration and handling of the servers that emit the sound of televisions. The receiver module resulted in a mobile application that allows the user to choose in a very simple and intuitive way, a particular TV channel and, subsequently, receive and play the sound on the mobile device, in real time. In addition, other features are available such as recording the sound played and sharing it on social networks. The tests conducted indicate that the solution may also be used in real-world scenarios with a scalable number of users, without compromising the services available on existing Wi-Fi networks.
Semina: Ciências Agrárias, 2016
The objective of this study was to evaluate forage production and root accumulation in Brachiaria... more The objective of this study was to evaluate forage production and root accumulation in Brachiaria decumbens cv. Basilisk with swine wastewater as a fertilizer. The experiment was conducted into a greenhouse in Federal Institute of Education, Science and Technology of Southeast of Minas Gerais, Rio Pomba Campus. Pots with 6 dm-3 volumes were used as experimental units. Were used a randomized block design with four replications. Were studied four swine waste doses (0, 225, 450 and 675mL pot-1) over four regrowth cycles. The dry matter production of the aerial part, forage accumulation rate, crude protein and dry matter production of roots increased with the highest swine waste doses being around 670, 742, 160 and 465% respectively from lower to higher dose. There was interaction between swine waste and regrowth cycles for plant height and tillering, and in all regrowth cycles responded positively with increasing swine waste doses. Applying swine waste on pastures is therefore a viable...
Revista Vértices, 2013
O objetivo do trabalho foi avaliar o efeito da aplicação de Água Residuária de Suínos (ARS) sobre... more O objetivo do trabalho foi avaliar o efeito da aplicação de Água Residuária de Suínos (ARS) sobre as propriedades químicas e físicas de um Latossolo Vermelho-Amarelo distrófico. O experimento foi realizado em condições de campo, com os seguintes tratamentos: T1 = 0; T2 = 50; T3 = 100; T4 = 150 m3.ha.ano-1 de ARS. A ARS promoveu aumento da acidez do solo na camada de 20-40 cm, e diminuição da quantidade de fósforo adsorvido à argila em ambas as camadas, 0-20 e 20-40 cm. A porcentagem de argila dispersa em água aumentou na camada de 20-40 cm, indicando que a aplicação permanente da ARS pode propiciar riscos de redução da permeabilidade do solo.
SSRN Electronic Journal, 2011
ABSTRACT The paper aims to analyze the degree of popular participation in e-government and accoun... more ABSTRACT The paper aims to analyze the degree of popular participation in e-government and accountability mechanisms. In order to answer the research question, which discusses the level of graduate students participation in those devices, a survey was adopted. Questionnaires were applied to 51 students in June, 2010 and the results indicate that the problem of popular participation in e-government lies not in the lack of technology, but on the political culture of the citizens and on the stage of development of national politics.