Papers by rodrigo moreira
Anais do XII Workshop de Pesquisa Experimental da Internet do Futuro (WPEIF 2021)
People with visual impairments struggle with urban mobility and independent travel, opening up op... more People with visual impairments struggle with urban mobility and independent travel, opening up opportunities for technological advances to improve their quality of life. The Internet of Things (IoT) plays an essential role in bringing improvements and accessibility for visually impaired people. Although alternatives aimed to use IoT in urban mobility, those solutions are still in the initial stages and do not supports urban mobility for people with visual impairment. This paper proposed and evaluated a low-cost IoT architecture that uses Single-Border Computers (SBCs) to support urban mobility. A performance evaluation showcased that our low-cost architecture handles bus trace workload and is suitable for supporting impaired people to get information concerning bus location on Smart Cities scenarios.
Relatório do 8º ICC Brazilian Arbitration Day São Paulo, 28 de Março de 2019
Revista Brasileira de Arbitragem, 2019
Anais do I Workshop de Redes 6G (W6G 2021), 2021
Networks should connect communicating peers, supporting vertical services requirements. The netwo... more Networks should connect communicating peers, supporting vertical services requirements. The network evolution towards 6G requires native network slicing techniques. Some literature approaches claim network slice realization, but they do not convincingly address the deployment across multiple Autonomous Systems. This work investigates the current 6G network slicing landscape, presents some gaps, and introduces the concept of the recursive network slicing between multiple Autonomous Systems, supported by the NASOR approach. This innovative concept supports implementing new network services required by the 6G vision. This work also sheds light on the 6G requirements for network slicing.
Anais do XII Workshop de Pesquisa Experimental da Internet do Futuro (WPEIF 2021), 2021
Edge Computing foi proposto para resolver problemas como gerenciamento de largura de banda, dispe... more Edge Computing foi proposto para resolver problemas como gerenciamento de largura de banda, dispersão geográfica, permitindo o processamento de dados próximo aos usuários finais. O objetivo de Network Functions Virtualization (NFV) é simplificar o fluxo de trabalho para criação de serviços computacionais. Este trabalho avança o estado da arte ao propor uma arquitetura gerenciamento unificado de Virtualized Everything Functions (VxFs) em Edge Computing. Essa arquitetura é capaz de implantar e monitorar continuamente VxFs, independentemente do hardware e a plataforma virtualização. A arquitetura proposta contribui para a realização dos mais diversos cenários de pesquisa experimental na borda, contribuindo para avançar o conhecimento nesta área.
Energy Measurement Laboratory for Heterogeneous Hardware Evaluation
2021 IEEE URUCON, 2021
Power consumption has become a main constraint in hardware design, and it is becoming a growing c... more Power consumption has become a main constraint in hardware design, and it is becoming a growing concern in HPC community due to the economic cost of electricity and the environmental impact. This paper presents our power measurement laboratory and include as an application example the comparison between FPGA and CPU running an image segmentation algorithm. The FPGA implementation targets AlveoU50 board and was developed using Vitis HLS, the CPU uses OpenCV library and runs in an Intel Xeon 4208. The FPGA version is 20x more energy efficient than the CPU for 4K images and 38x for 8K images.
Deploying Scalable and Stable XDP-Based Network Slices Through NASOR Framework for Low-Latency Applications
Anais do XVI Workshop de Visão Computacional (WVC 2020), 2020
The network traffic classification allows improving the management, and the network services offe... more The network traffic classification allows improving the management, and the network services offer taking into account the kind of application. The future network architectures, mainly mobile networks, foresee intelligent mechanisms in their architectural frameworks to deliver application-aware network requirements. The potential of convolutional neural networks capabilities, widely exploited in several contexts, can be used in network traffic classification. Thus, it is necessary to develop methods based on the content of packets transforming it into a suitable input for CNN technologies. Hence, we implemented and evaluated the Packet Vision, a method capable of building images from packets raw-data, considering both header and payload. Our approach excels those found in state-of-the-art by delivering security and privacy by transforming the raw-data packet into images. Therefore, we built a dataset with four traffic classes evaluating the performance of three CNNs architectures: A...
Enhancing dynamism in management and network slice establishment through deep learning
2021 International Conference on Information Networking (ICOIN), 2021
With the variety of applications and the different user requirements, it is necessary to offer ta... more With the variety of applications and the different user requirements, it is necessary to offer tailored resources efficiently not only in access but also in the core of the network. Inspired by the definition and standardization of mobile networks, especially 5G that focused on business verticals, the term network slicing has received numerous state-of-the-art efforts to materialize an approach that meets dynamism, programmability, and flexibility requirements. Leveraged by SDN and NFV technologies, network slicing is inspiring by resource sharing similar to virtual machine management, allowing standard network hardware to accommodate a wide variety of logical networks with specific requirements and data and control planes. However, state-of-the-art approaches do not address resource slicing at the core of the network in detail and appropriately. Therefore, we built NASOR to provide network slicing over the Internet data plane spanning across multiple domains through a segment routing and a distributed-based approach. Our approach excels those found in state-of-the-art by delivering an open policy interface that allows third-party applications to manage network slices dynamically. In this sense, this paper exploits this interface through a mechanism of convolutional neural networks that classifies network traffic, instructing the path-setting agent to be aware of application which predominantly runs on the network improving dynamism in the network slices deployment. Experiments showcase the convolutional neural network applicability and suitability as an enabling technology to enhance and instruct NASOR to establish network slices over multiple domains.
A Flexible Network and Compute-Aware Orchestrator to Enhance QoS in NFV-Based Multimedia Services
2018 IEEE 32nd International Conference on Advanced Information Networking and Applications (AINA), 2018
People and organizations around the globe are using multimedia applications to communicate. By ev... more People and organizations around the globe are using multimedia applications to communicate. By evolving their networks, network operators are taking advantage of the convergence of voice and data. QoS metrics are usually based on parameters from the user side or network side. In this context, NFV and SDN can improve the communication experience and offers an abstraction layer to the deployment of flexible multimedia applications provided on the cloud. In this work, we propose an approach to mitigate globally manage network and computing resources for multimedia applications. To this end, we come up with a control plane entity capable of orchestrating compute and network resources for the multimedia application scenario, relying on SIP control messages. Our solution brings QoS enhancement to the user through resiliency, load balancing, packet inspection, scaling on demand and the separation of control and data planes.
Arbitragem e Poder Judiciário: a Definição da Competência do Árbitro
Revista Brasileira de Arbitragem, 2017
A Comparative Study Between Containerization and Full-Virtualization of Virtualized Everything Functions in Edge Computing
Advanced Information Networking and Applications, 2021
Química Nova, 2021
CHEMICAL COMPOSITION AND PHOTOPROTECTIVE AND ANTIRADICAL ACTIVITIES OF THE BRANCHES OF Platonia i... more CHEMICAL COMPOSITION AND PHOTOPROTECTIVE AND ANTIRADICAL ACTIVITIES OF THE BRANCHES OF Platonia insignis (CLUSIACEAE). The chemical study of the branches of Platonia insignis enabled the isolation of the biflavonoid morelloflavone and the identification, by mass spectrometry, of over 9 polyphenols, including eight biflavonoids, one benzophenone, and one xanthone. The in vitro biological tests of solar photoprotection and antiradical activities against the crude extract and Hex and AcOEt fractions showed relevant results, which confirm the high pharmaceutical potential of the species
Esta tese é sobre um método de fatiamento de rede entre múltiplos Sistemas Autônomos. Eu acredito... more Esta tese é sobre um método de fatiamento de rede entre múltiplos Sistemas Autônomos. Eu acredito que ela é também sobre transformação. Perseguir o título Ph. D. é se transformar. A transformação profissional e pessoal são as conquistas mais significativas de todo o processo; e elas não se estabelecem somente na busca e realização dos meios de responder a um hipótese científica, elas requerem circunstâncias e pessoas que merecem apreciação e gratidão. Primeiramente, agradeço a Deus, Autor da Vida, por ter me criado a sua imagem e semelhança com a capacidade de pensar, criar e avaliar. Agradeço aos meus pais Donizete e Cláudia; e aos meus irmãos Thiago e Donizete-Jr pelo incentivo e amor incondicional. Agradeço a Larissa pelo incentivo, apoio e pela compreensão nos diversos momentos dessa etapa. Agradeço o professor e amigo Flávio de Oliveira Silva da Universidade Federal de Uberlândia por ter sido, durante toda a Pós-graduação, um agente de transformação profissional e pessoal. Gratidão pela oportunidade, orientação, suporte, conversas e ensinamentos. Agradeço o professor Rui Aguiar do Instituto de Telecomunicações da Universidade de Aveiro pela valiosa coorientação nesta pesquisa. Agradecimentos ao professor e amigo Pedro Frosi da Universidade Federal de Uberlândia pela ajuda, humanidade, conversas e direcionamentos ao longo da Pósgraduação. Gratidão aos professores do Programa de Pós-Graduação em Ciência da Computação da Universidade Federal de Uberlândia, em especial àqueles que me honraram com seus ensinamentos, professores:
Anais do XXXI Simpósio Brasileiro de Informática na Educação (SBIE 2020), 2020
Os dispositivos eletrônicos, baseados em hardware livre, têm sido amplamente utilizados em trabal... more Os dispositivos eletrônicos, baseados em hardware livre, têm sido amplamente utilizados em trabalhos sobre robótica no contexto educacional. No entanto, observa-se que alguns estudos confundem os conceitos de “eletrônica” com “robótica”. Logo, este trabalho tem como objetivo o desenvolvimento de um mapeamento sistemático para investigar como os estudos sobre robótica, no contexto educacional, têm usado os dispositivos eletrônicos baseados em hardware livre. Dentre os resultados obtidos, observou-se que dos 73 estudos relevantes, 40 foram classificados de fato como robótica, enquanto 13 possuem potencial para este mesmo contexto. Por outro lado, 20 estudos foram melhor classificados como eletrônica.
International Journal of Grid and Utility Computing, 2020
Rich-media applications deployed on cloud lead the use of the internet by people and organisation... more Rich-media applications deployed on cloud lead the use of the internet by people and organisations around the world. The advent of Software-Defined Networking (SDN), Networking Function Virtualisation (NFV), and Machine Learning (ML) techniques brings new possibilities to address carrier environment challenges, especially QoS. The literature does not show a smart and flexible solution that brings scalability with holistic management of network, compute, and application resources taking into account different approaches to enhance QoS. This paper presents the Orchestrator that manages agnostic network, compute, and applications resources hosted in the cloud. Through ML algorithms, our solution enhances QoS towards network resilience, bandwidth allocation based on real-time traffic, and end-to-end QoS mechanism to the event-driven scenario. The Orchestrator operation spans across different domains providing applications, virtual functions, and cloud resources management elastically. Our experimental evaluation in a large-scale testbed shows Orchestrator's capability to provide a smart jitter decrease using AI techniques.
Ad Hoc Networks, 2019
Advanced communication networks, such as 5G and beyond, will be a complex ecosystem made of multi... more Advanced communication networks, such as 5G and beyond, will be a complex ecosystem made of multiple physically interconnected elements, implying that the upcoming network will have to address capabilities such as flexibility, programmability and extensibility. This article, describes an Open and Extensible 5G Network Function Virtualisation (NFV) based Reference ecosystem of experimental facilities, named 5GinFIRE, that integrates existing facilities with new vertical-specific ones but also lays down the foundations for instantiation fully softwarised architectures of vertical industries and experimenting with them. Additionally, we present 5GinFIRE as the forerunner experimental playground, together with three uses cases, wherein new components, architecture designs and APIs may be tried and proposed before they are ported to more industrially mainstream 5G networks that are expected to emerge in large scale.
Origem dos Hortifrutis Comercializados em um Município de Médio Porte do Centro-Oeste Paulista
XXI I Congresso Brasileiro de Nutrologia, 2018
HIP International, 2010
Intertrochanteric fracture is the most frequent type of fracture in the proximal femur and the co... more Intertrochanteric fracture is the most frequent type of fracture in the proximal femur and the compressive hip screw is one of the most popular methods of treatment. The reduction criteria for this type of fracture are ill-defined. The purpose of this study was to validate 3 reduction criteria: displacement, alignment in the anteroposterior and in the lateral plane. We reviewed a cohort of 430 intertrochanteric fractures treated with a compression hip screw. The type of fracture, quality of reduction and technical complications were noted. We observed a relationship between accuracy of reduction and the incidence of complications, even among fractures of the same severity. A displacement bigger than 4mm and failure to accomplish correct alignment (a neck-shaft angle over 125deg; and less than 20° angulation on the lateral view) was considered a poor reduction and was associated with more complications.
Engenharia Sanitaria e Ambiental, 2009
A coagulação é uma etapa de tratamento da água, e para tal são realizados ensaios de teste de jar... more A coagulação é uma etapa de tratamento da água, e para tal são realizados ensaios de teste de jarro que permitem determinar a dose necessária dos agentes coagulante e químico de ajuste de pH no processo de coagulação. Contudo, esses ensaios demoram a ser executados, não respondendo em tempo real às mudanças da qualidade da água bruta. Para superar tal limitação, redes neurais artificiais multicamadas foram construídas (e seus pesos sinápticos ajustados), validadas e testadas para predizer a dosagem do hidróxido de sódio e do sulfato de alumínio - utilizados como agentes químico de ajuste de pH e coagulante, respectivamente. Os resultados dos modelos obtidos são compatíveis com os dados experimentais tendo em vista que as incertezas das estimativas estão na mesma ordem de grandeza das faixas indicadas pelos ensaios realizados de testes de jarro ao longo de quase seis anos.
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Papers by rodrigo moreira