Repositório Institucional Unesp :: Navegando por Tipo "Trabalho apresentado em evento"

Navegando por Tipo "Trabalho apresentado em evento"

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100 anos de imigração japonesa: mangás no ensino fundamental e médio
(Universidade Estadual Paulista (Unesp), 2007) Silva, Leila Rangel da [UNESP]; Kobayashi, Maria do Carmo Monteiro [UNESP]; Universidade Estadual Paulista (Unesp)
14 Bissat, an international student experience
(2005-01-01) Stancato, Fernando; Mangili Jr., José Fernando; Tribess, Arlindo [UNESP]; Prodsan, Yulian; Faculdade Metropolitana Londrinense - IESB; Universidade Estadual Paulista (UNESP); Yuzhnoye State Design Office
On August 2003 an accident with the Brazilian Launcher, VLS, destroyed the UNOSAT (www.space.unopar.br) that was the first Brazilian University Undergraduate Student nano satellite. Three months latter an invitation to put some of the UNOSAT hardware inside an Ukrainian university micro satellite, UMS, appeared. The UMS satellite is been developed by a group of students of the Dnepropetrovsk National University, Ukraine, with the help of young engineers of the Spacecraft Design Office of Yuzhnoye. In this way both UMS and a new Brazilian nanosatellite 14 Bissat project started, coordinated by two doctorate students with undergraduates. The name of 14 Bissat is to commemorate the 100 year of the flight of the first airplane by the Brazilian Santos Dumont in Paris and is an acronym of Brazilian International Student Satellite. Soon a new team of students of the Escola Politécnica and Universidade Norte do Parana, Brazil, was formed and discussion on the 14 BISSAT preliminary design began. After the exchange of basic information of Brazilian/Ukranian sides, it was decided that the same configuration used on the UNOSAT could be used with small modifications. The Brazilian students had to do a much more compact design as the volume was going to be four time smaller. As the previous satellite, it was going to download a voice message and a packet of telemetry. As the information is going to be sent by amateur radio band a collaboration was gotten by an Brazilian amateur radio association called ABRASAT (www.abrasat.org). The different project parts were divided among the thirteen students: structure, radio link, solar panels, energy controller module, telemetry and instrumentation. They were also responsible for the systems tests, integration and follow final tests. After nine months the students did the design, integration and tests of the 14 BISSAT. Besides putting on practice the disciplines of their respective courses, new skills was gotten as international information exchange using internet resources as emails and chats. The team had to overcome a series of difficulties as lack of experience, resources, bibliography, and time. But with some indigenous ideas the students and teachers managed to finish the nanosatellite. It is explained an aerospace management procedure that contributed to keep to project schedule. It was used only non space qualified parts and a simple qualification procedure was followed. International collaboration was a key factor for the success in the preliminary project phase and in construction. Innumerous benefits for the students arose from the program: capacity to overcome academic obstacles, responsibility, high quality and reliable project/manufacture, teamwork and international experience. Nowadays another group of the Metropolitana-IESB is doing the flight module that is expected to be launched in 2006.
18-pulse autotransformer rectifier unit using SEPIC converters for regulated DC-bus and high frequency isolation
(2015-01-01) Lourenco, Angelo C.; Seixas, Falcondes J. M. [UNESP]; Pelicer, Joao C. [UNESP]; Oliveira, Priscila S.; Federal Institute of Mato Grosso Do sul; Universidade Estadual Paulista (Unesp); Federal University of Tocantins
Multipulse rectifier topologies based on phase-shifting auto-connected transformers are increasingly applied in power electronics devices for power quality improvement. Due their construction, they mitigate many low-harmonic frequency and reduce the Total Harmonic Distortion of the line current (THDi), resulting a high Power Factor (PF). The 18-pulse topology is formed by a phase-shifting transformer or autotransformer and three six-pulse bridge rectifiers and, frequently, passives elements named Interphase Transformers (IPT's) are used to perform the DC outputs parallel connected. The delta-autotransformer topology, used in this work process approximately 20% of the total load. To reduce the bulky elements (IPT's) and to reach regulated DC-output, this work proposes using three SEPIC-based high-frequency isolated converters to link the DC-side of the bridges to the load. In addition, the secondary windings of these DC-DC converters can be connected in series or parallel to perform higher or lower voltage through the load. The laboratory prototype rating 2.4kW was built and the main simulation results are shown to confirm the high power factor, regulated DC-bus, and high-frequency isolation with reduced size and weight.
18-PULSE AUTOTRANSFORMER RECTIFIER UNIT USING SEPIC CONVERTERS FOR REGULATED DC-BUS AND HIGH FREQUENCY ISOLATION
(Ieee, 2015-01-01) Lourenco, Angelo C.; Seixas, Falcondes J. M. [UNESP]; Pelicer Junior, Joao C. [UNESP]; Oliveira, Priscila S.; IEEE; Fed Inst Mato Grosso do Sul; Universidade Estadual Paulista (Unesp); Fed Univ Tocantins
Multipulse rectifier topologies based on phase-shifting auto-connected transformers are increasingly applied in power electronics devices for power quality improvement. Due their construction, they mitigate many low-harmonic frequency and reduce the Total Harmonic Distortion of the line current (THDi), resulting a high Power Factor (PF). The 18-pulse topology is formed by a phase-shifting transformer or autotransformer and three six-pulse bridge rectifiers and, frequently, passives elements named Interphase Transformers (IPT's) are used to perform the DC outputs parallel connected. The delta-autotransformer topology, used in this work process approximately 20% of the total load. To reduce the bulky elements (IPT's) and to reach regulated DC-output, this work proposes using three SEPIC-based high-frequency isolated converters to link the DC-side of the bridges to the load. In addition, the secondary windings of these DC-DC converters can be connected in series or parallel to perform higher or lower voltage through the load. The laboratory prototype rating 2.4kW was built and the main simulation results are shown to confirm the high power factor, regulated DC-bus, and high-frequency isolation with reduced size and weight.
2013: retrospectiva de 16 anos do projeto de extensão universitária serviço de radiologia odontológica
(Universidade Estadual Paulista (Unesp), 2013) Gonçalves, Andréa [UNESP]; Tosoni, Guilherme Monteiro [UNESP]; Gonçalves, Marcelo [UNESP]; Oliveira, Matheus Lima de [UNESP]; Schaedlich, Ana Beatriz de Moraes [UNESP]; Oliveira, Dayane do Pinho [UNESP]; Ferreira, Edneide Alves [UNESP]; Olivi, Marcos Dimas [UNESP]; Universidade Estadual Paulista (Unesp)
Introdução: neste ano de 2013 são comemorados 16 anos do projeto de extensão universitária "Serviço de Radiologia Odontológica", pertencente ao Departamento de Diagnóstico e Cirurgia da Faculdade de Odontologia de Araraquara - UNESP. Objetivos: apresentar relato sobre este projeto de extensão durante seus 16 anos de desenvolvimento cujo objetivo é oferecer aos pacientes em tratamento na Faculdade e aos encaminhados pelo SUS, um Serviço de Radiologia Odontológica que atenda às suas necessidades, permitindo ampliar os conhecimentos sobre as condições e as necessidades de tratamento detectadas na comunidade da cidade de Araraquara e região; integrar o acadêmico com as atividades desenvolvidas pelo Serviço por meio do relacionamento com o corpo docente, discente (bolsista ou voluntários), servidores técnico-administrativos da Unidade e pacientes (comunidade) e proporcionar a este acadêmico experiência complementar em Radiologia Odontológica. Métodos: para o desenvolvimento do projeto uma equipe especializada foi estabelecida visando o compromisso social com a comunidade, com o ensino e a pesquisa. Com o aumento da demanda, o projeto passou a contar com a participação de bolsistas da PROEX. Ao início de cada ano letivo, acadêmicos são convidados a participar como voluntários elaborando laudo radiográfico sob supervisão docente. Recebemos solicitação de exame radiográfico de outros Projetos de Extensão da Unidade, além de que Serviços pertencentes a UNESP nos encaminham e atuam em parceria com o Serviço de Radiologia Odontológica, considerando que os pacientes encaminhados são submetidos aos exames radiográficos solicitados e laudos radiográficos são emitidos pelos docentes ou sob supervisão. Resultados: Até o momento, foram atendidos no Serviço 30.340 pacientes, sendo realizados 94.605 exames radiográficos. Participaram 17 bolsistas PROEX e 67 acadêmicos voluntários. Além do benefício proporcionado à população, o Serviço tem capacitado e estimulado os acadêmicos para atuarem na área de Radiologia Odontológica e, propiciado o desenvolvimento de linhas de pesquisa e atividades de Iniciação Científica, que geraram divulgações em Eventos Científicos e publicações em periódicos.
23 anos de teatro Alquimia
(Universidade Estadual Paulista (Unesp), 2011) Capela, Marisa Veiga [UNESP]; Capela, Jorge Manuel Vieira [UNESP]; Gallo, Irã Borges Coutinho [UNESP]; Lima, Juliana Ramos de [UNESP]; Spadoto, Mariane [UNESP]; Andrioli, Bruno de Santis [UNESP]; Camara, Diego Carneiro [UNESP]; Amaral, Thais Silva do [UNESP]; Oliveira, José Augusto Moreira de [UNESP]; Deodato, Reinaldo Luiz de Campos [UNESP]; Universidade Estadual Paulista (Unesp)
2D Barrier in a Superconducting Niobium Square
(Amer Inst Physics, 2014-01-01) Joya, Miryam R.; Sardella, Edson [UNESP]; Barba-ortega, J.; Pintilie, L.; Mitoseriu, L.; Alexe, M.; Univ Nacl Colombia; Universidade Estadual Paulista (Unesp)
The presence of barriers changes the vortex structure in superconducting Nb square in presence of a uniform applied magnetic field. The Cooper pair configurations in a mesoscopics superconducting square of Nb with a barrier are calculated within the nonlinear Ginzburg Landau equations. We predict the nucleation of multi-vortex states into the sample and a soft entry of the magnetic field inside and around into the barrier. A novel and non-conventional vortex configurations occurs at determined magnetic field.
A 2D Deep Boltzmann Machine for Robust and Fast Vehicle Classification
(2017-11-03) Santos, Daniel Felipe Silva [UNESP]; Souza, Gustavo Botelho De; Marana, Aparecido Nilceu [UNESP]; Universidade Estadual Paulista (Unesp); Universidade Federal de São Carlos (UFSCar)
The visual and automatic classification of vehicles plays an important role in the Transport Area. Besides of security issues, the monitoring of the type of traffic in streets and highways, as well the traffic dynamics over time, allows the optimization of use and of resources related to such public infrastructure. In this work we propose a novel method, called 2D-DBM, for robust and efficient automatic vehicle classification through color images based on a DBM (Deep Boltzmann Machine) combined with bilinear projections. While the DBM training allows a robust initialization of discriminative MLP (Multilayer Perceptron) neural network parameters, the bilinear projection technique can scale down the MLP dimensions, obtaining efficiency while preserving accuracy. The proposed method was assessed on the BIT-Vehicle database, a challenging dataset consisting of frontal images of vehicles collected in a real traffic environment, and compared with a CNN (Convolutional Neural Network) and a traditional DBM (without bilinear projection). The obtained results show that, while keeping the accuracy, the new method significantly reduced the network size and the processing time.
A 2kW interleaved ZCS-FM boost rectifier digitally controlled by FPGA device
(IEEE, 2005-01-01) Canesin, C. A.; Goncalves, FAS; Universidade Estadual Paulista (Unesp)
This paper presents a 2kW single-phase high power factor boost rectifier with four cells in interleave connection, operating in critical conduction mode, and employing a soft-switching technique, controlled by Field Programmable Gate Array (FPGA). The soft-switching technique Is based on zero-current-switching (ZCS) cells, providing ZC (zero-current) turn-on and ZCZV (zero-current-zero-voltage) turn-off for the active switches, and ZV (zero-voltage) turn-on and ZC (zero-current) turn-off for the boost diodes. The disadvantages related 'to reverse recovery effects of boost diodes operated in continuous conduction mode (additional losses, and electromagnetic interference (EMI) problems) are minimized, due to the operation in critical conduction mode. In addition, due to the Interleaving technique, the rectifer's features include the reduction in the input current ripple, the reduction in the output voltage ripple, the use of low stress devices, low volume for the EMI input filter, high input power factor (PF), and low total harmonic distortion (THD) In the input current, in compliance with the TEC61000-3-2 standards. The digital controller has been developed using a hardware description language (VHDL) and implemented using a XC2S200E-SpartanII-E/Xilinx FPGA device, performing a true critical conduction operation mode for four interleaved cells, and a closed-loop to provide the output voltage regulation, like as a pre-regulator rectifier. Experimental results are presented for a 2kW implemented prototype with four interleaved cells, 400V nominal output voltage and 220V(rms) nominal input voltage, in order to verify the feasibility and performance of the proposed digital control through the use of a FPGA device.
2ª mostra itinerante de fotografias click direito: estimulando a visualidade no debate sobre os direitos humanos
(Universidade Estadual Paulista (Unesp), 2011) Olivato, Wilian Roberto [UNESP]; Cardoso, Clodoaldo Meneguello [UNESP]; Universidade Estadual Paulista (Unesp)
2º conversa com o autor: Flávio de Souza
(Universidade Estadual Paulista (Unesp), 2011) Oliveira, Fábio Santos [UNESP]; Universidade Estadual Paulista (Unesp)
2ν double beta decay within the relativistic QRPA
(2011-01-01) De Conti, Cláudio [UNESP]; Krmpotić, Francisco; Carlson, Brett Vern; Universidade Estadual Paulista (UNESP); Universidad Nacional de La Plata; Instituto Tecnológico de Aeronáutica
We perform a self-consistent relativistic QRPA (RQRPA) calculation of 2νββ-decay based on relativistic BCS (RBCS) mean field theory results for odd-odd intermediate nuclei 48Sc, 76As, 82Br, 100Tc, 128I, and 130I. The RBCS equations that resemble the non-relativistic ones are constructed from a Dirac-Gorkov variational functional. We use the parameter set NL1 for the σ, ω and ρ mesons. The RQRPA equations are solved for the residual π +ρ interaction by employing the same parameters used in the RBCS for the latter meson, and experimental values for the pion and nucleon. The RQRPA results for the 2νββ matrix elements are similar to those obtained within the QRPA and the shell model.
3-D Space Vector PWM implementation for Four-Leg Voltage Source Inverter
(2011-12-28) Ota, Joao I.Y.; Villalva, Marcelo G. [UNESP]; Sato, Fujio; Ruppert, Ernesto; Universidade Estadual de Campinas (UNICAMP); Universidade Estadual Paulista (Unesp)
The Space Vector PWM implementation and operation for a Four-leg Voltage Source Inverter (VSI) is detailed and discussed in this paper. Although less common, four-leg VSIs are a viable solution for situations where neutral connection is necessary, including Active Power Filter applications. This topology presents advantages regarding the VSI DC link and capacitance, which make it useful for high power devices. Theory, implementation and simulations are also discussed in this paper. © 2011 IEEE.
3-Phase Multi-Functional Grid-Tied Inverter for Compensation of Oscillating Instantaneous Power
(Ieee, 2019-01-01) Olimpio Filho, Jose de Arimateia [UNESP]; Paredes, Helmo Kelis Morales [UNESP]; Santos Alonso, Augusto Matheus dos; Bonaldo, Jakson Paulo; Marafao, Fernando Pinhabel [UNESP]; Simoes, Marcelo Godoy; Batschauer, A. L.; Filho, AJS; Rech, C.; Brandao, D. I.; Martins, D. C.; Tedeschi, E.; Santos, E. C.; Marafao, F. P.; Antunes, FLM; Goncalves, FAS; Neves, FAD; Braga, HAC; Pinto, JOP; Duarte, J.; Matakas, L.; Barreto, LHSC; Heldwein, M. L.; Correa, MBD; Mattavelli, P.; Barbosa, P. G.; Magalhaes, R. D.; Machado, R. Q.; Madawala, U.; Universidade Estadual Paulista (Unesp); Norwegian Univ Sci & Technol NTNU; Universidade Federal de Mato Grosso do Sul (UFMS); Colorado Sch Mines
The primary objective of this paper is to present the basic terms of Conservative Power Theory (CPT) and its applications for compensating instantaneous power oscillations in three-phase three-wire systems. The reference signals for a three-phase multi-functional grid-tied inverter are derived using the instantaneous power and the instantaneous reactive energy terms defined by CPT, having the oscillating power components defined directly in a-b-c coordinates. The compensation method proposed in this study is validated through simulations based on practical power system modeling. The results presented here show the feasibility and singularities of the proposed method.
3-Phase Multi-Functional Grid-Tied Inverter for Compensation of Oscillating Instantaneous Power
(2019-12-01) Arimateia Olimpio Filho, Jose De [UNESP]; Kelis Morales Paredes, Helmo [UNESP]; Dos Santos Alonso, Augusto Matheus; Paulo Bonaldo, Jakson; Marafao, Fernando Pinhabel [UNESP]; Godoy Simoes, Marcelo; Universidade Estadual Paulista (Unesp); Norwegian University of Science Technology (NTNU); Federal University of Mato Grosso (UFMT); Electrical Engineering Department
The primary objective of this paper is to present the basic terms of Conservative Power Theory (CPT) and its applications for compensating instantaneous power oscillations in three-phase three-wire systems. The reference signals for a three-phase multi-functional grid-tied inverter are derived using the instantaneous power and the instantaneous reactive energy terms defined by CPT, having the oscillating power components defined directly in a-b-c coordinates. The compensation method proposed in this study is validated through simulations based on practical power system modeling. The results presented here show the feasibility and singularities of the proposed method.
30th Brazilian society for virology 2019 annual meeting-Cuiabá, Mato Grosso, Brazil
(2020-05-01) Slhessarenko, Renata Dezengrini; Dos Santos, Marcelo Adriano Mendes; Lunardi, Michele; Carneiro, Bruno Moreira; Chavez-Pavoni, Juliana Helena; De Aguiar, Daniel Moura; Trettel, Ana Claudia Pereira Terças; Andrighetti, Carla Regina; Da Fonseca, Flávio Guimarães; Araújo, João Pessoa [UNESP]; Campos, Fabrício Souza; De Arruda, Luciana Barros; Abrahão, Jônatas Santos; Spilki, Fernando Rosado; Universidade Federal de Mato Grosso (UFMT); Universidade Do Estado de Mato Grosso (UNEMAT); Universidade de Cuiabá (UNIC); Universidade Federal de Rondonópolis (UFR); Universidade Federal de Minas Gerais (UFMG); Universidade Estadual Paulista (Unesp); Universidade Federal Do Tocantins (UFT); Universidade Federal do Rio de Janeiro (UFRJ); Federação de Estabelecimentos de Ensino Superior em Novo Hamburgo (FEEVALE)
The 30th meeting of the Brazilian Society for Virology (SBV) was held, for the first time in its 30 years of existence, in Cuiabá, the capital of Mato Grosso State, Central Western Brazil, a tropical region between the three richest biomes in the world: Amazon Florest, Cerrado and Pantanal. In recent years, the field of virology has been built in the State. The aim of this report is to support participants and virologists to receive the most up-to-date information about the meeting, which occurred from 16 to 19 October 2019. National and international speakers gave SBV the opportunity to learn about their experience on their virology fields, sharing recent scientific findings, compiling conferences, round table presentations and work presentations in oral and poster sessions. The meeting held over 300 attendants, who were also involved on oral and poster presentations, showing a great variety of recent unpublished studies on environmental, basic, animal, human, plant and invertebrate virology. In addition, SBV offered the Helio Gelli Pereira award for the best research studies in each field presented during the meeting. The 30th meeting of SBV was very productive and has also encouraged scientific partnership and collaboration among virologists worldwide.
316f a preliminary physicochemical, exergetic and economic study of hydrogen production utilizing glycerol
(2008-01-01) Souza, Antonio Carlos Caetano [UNESP]; Universidade Estadual Paulista (UNESP)
31st Brazilian Online Society for Virology (SBV) 2020 Annual Meeting
(2021-03-05) Arruda, Luciana Barros de; Campos, Fabrício Souza; Abrahão, Jônatas Santos; da Fonseca, Flávio Guimarães; Araújo Junior, João Pessoa [UNESP]; Rosado Spilki, Fernando; Universidade Federal do Rio de Janeiro (UFRJ); Universidade Federal do Tocantins (UFT); Universidade Federal de Minas Gerais (UFMG); Universidade Estadual Paulista (Unesp); Federação de Estabelecimentos de Ensino Superior em Novo Hamburgo (FEEVALE)
The year 2020 was profoundly marked by the emergence and spread of SARS-CoV-2, causing COVID-19, which represents the greatest pandemic of the 21st century until now, and a major challenge for virologists in the scientific and medical communities. Increased numbers of SARS-CoV-2 infection all over the world imposed social and travel restrictions, including avoidance of face-to-face scientific meetings. Therefore, for the first time in history, the 2020 edition of the Brazilian Society of Virology (SBV) congress was totally online. Despite the challenge of the new format, the Brazilian society board and collaborators were successful in virtually congregating more than 921 attendees, which was the greatest SBV participant number ever reached. Seminal talks from prominent national and international researchers were presented every night, during a week, and included discussions about environmental, basic, animal, human, plant and invertebrate virology. A special roundtable debated exclusively new data and perspectives regarding COVID-19 by some of the greatest Brazilian virologists. Women scientists were very well represented in another special roundtable called Young Women Inspiring Research, which was one of the most viewed and commented section during the meeting, given the extraordinary quality of the presented work. Finally, SBV offered the Helio Gelli Pereira award for one graduate and one undergraduate student, which has also been a fruitful collaboration between the society and Viruses journal. The annual SBV meeting has, therefore, reached its goals to inspire young scientists, stimulate high-quality scientific discussion and to encourage global collaboration between virologists.
3D Auto-Segmentation of Mandibular Condyles
(Ieee, 2020-01-01) Brosset, Serge; Dumont, Maxime; Bianchi, Jonas [UNESP]; Ruellas, Antonio; Cevidanes, Lucia; Yatabe, Marilia; Goncalves, Joao [UNESP]; Benavides, Erika; Soki, Fabiana; Paniagua, Beatriz; Prieto, Juan; Najarian, Kayvan; Gryak, Jonathan; Soroushmehr, Reza; IEEE; Univ Michigan; Universidade Estadual Paulista (Unesp); Univ N Carolina
Temporomandibular joints (TMJ) like a hinge connect the jawbone to the skull. TMJ disorders could cause pain in the jaw joint and the muscles controlling jaw movement. However, the disease cannot be diagnosed until it becomes symptomatic. It has been shown that bone resorption at the condyle articular surface is already evident at initial diagnosis of TMJ Osteoarthritis (OA). Therefore, analyzing the bone structure will facilitate the disease diagnosis. The important step towards this analysis is the condyle segmentation. This article deals with a method to automatically segment the temporomandibular joint condyle out of cone beam CT (CBCT) scans. In the proposed method we denoise images and apply 3D active contour and morphological operations to segment the condyle. The experimental results show that the proposed method yields the Dice score of 0.9461 with the standards deviation of 0.0888 when it is applied on CBCT images of 95 patients. This segmentation will allow large datasets to be analyzed more efficiently towards data sciences and machine learning approaches for disease classification.
3D Auto-Segmentation of Mandibular Condyles
(2020-07-01) Brosset, Serge; Dumont, Maxime; Bianchi, Jonas [UNESP]; Ruellas, Antonio; Cevidanes, Lucia; Yatabe, Marilia; Goncalves, Joao [UNESP]; Benavides, Erika; Soki, Fabiana; Paniagua, Beatriz; Prieto, Juan; Najarian, Kayvan; Gryak, Jonathan; Soroushmehr, Reza; University of Michigan; Universidade Estadual Paulista (UNESP); Orthodontics and Computer Science
Temporomandibular joints (TMJ) like a hinge connect the jawbone to the skull. TMJ disorders could cause pain in the jaw joint and the muscles controlling jaw movement. However, the disease cannot be diagnosed until it becomes symptomatic. It has been shown that bone resorption at the condyle articular surface is already evident at initial diagnosis of TMJ Osteoarthritis (OA). Therefore, analyzing the bone structure will facilitate the disease diagnosis. The important step towards this analysis is the condyle segmentation. This article deals with a method to automatically segment the temporomandibular joint condyle out of cone beam CT (CBCT) scans. In the proposed method we denoise images and apply 3D active contour and morphological operations to segment the condyle. The experimental results show that the proposed method yields the Dice score of 0.9461 with the standards deviation of 0.0888 when it is applied on CBCT images of 95 patients. This segmentation will allow large datasets to be analyzed more efficiently towards data sciences and machine learning approaches for disease classification.

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