Detecção de potenciais corticais antecipatórios em sinais de eletroencefalografia (EEG) durante a condução de carros

O reconhecimento da intenção do condutor a partir de sinais de eletroencefalografia (EEG) pode ser útil no desenvolvimento de interfaces cérebro computador (BCI) para serem usadas em sinergia com veículos inteligentes. Isso pode ser benéfico para melhorar a qualidade de interação entre o motorista e o carro, por exemplo, fornecendo uma resposta do carro inteligente alinhada com a intenção do motorista. Neste estudo, considera-se a antecipação como sendo o estado cognitivo que leva a ações especificas durante a condução de um automóvel. Portanto, propomos investigar a presença de padrões antecipatórios em sinais EEG durante a condução de veículos para determinar duas ações especifícas (1) virar à esquerda e (2) virar à direita, alguns milissegundos antes que tais ações aconteçam. Um protocolo experimental foi proposto para gravar sinais EEG de 5 indivíduos enquanto eles operam um simulador de realidade virtual não invasiva - que foi projetado para tal experimento - que simula a condução de um carro virtual. O protocolo experimental é uma variante do paradigma da variação negativa contingente (CNV) com condições Go e No-go no sistema de condução de realidade virtual. Os resultados apresentados neste estudo indicam a presença de padrões antecipatórios em potenciais corticais lentos observados no domínio do tempo (medias dos sinais EEG) e da frequência (Power Spectra e coerência de fase). Isso abre um leque de possibilidades no desenvolvimento de sistemas BCI - baseados em sinais antecipatórios - que conectem o motorista ao veiculo inteligente favorecendo uma tomada de decisão que analise as intenções dos condutores podendo eventualmente evitar acidentes durante a condução.

Modelagem dinâmica temporal para a avaliação da disponibilidade hídrica e seus efeitos na sustentabilidade do sistema da sub-bacia do córrego do Boi Branco - SP

Pós-graduação em Agronomia (Irrigação e Drenagem) - FCA

Monitoramento e identificação de falhas em estruturas aeronáuticas e mecânicas utilizando técnicas de computação inteligente

Pós-graduação em Engenharia Mecânica - FEIS

Aplicativos móveis para análise de problemas de fala

This paper presents two mobile applications developed for assistance on the analysis of speech related problems: Contagem de Disfluências (Disfluency Counter) and Velocidade de Leitura (Reading Speed). The use of tablet mobile devices streamlines the procedures for speech problem analysis conducted by speech language therapist. The lack of tabletspecific software designed for this purpose in the Portuguese language, and suited to the Brazilian needs, motivated the development of these applications, which was conducted according to the Kanban agile methodology.

Dispersões sólidas mucoadesivas para administração oral de zidovudina

A Síndrome da Imunodeficiência Adquirida (AIDS) é uma doença causada pelo vírus da imunodeficiência humana (HIV) e acomete milhões de indivíduos pelo mundo todo. Para seu tratamento, utilizam-se antirretrovirais em associação ou isoladamente, e um dos mais utilizados é a zidovudina, 3’-azido-3’-desoxitimidina (AZT). Porém, sua baixa biodisponibilidade causada pela elevada taxa de metabolização hepática e baixa capacidade de permeação através das membranas biológicas, resulta na necessidade de administração de elevadas doses do fármaco, várias vezes ao dia, o que acaba gerando níveis plasmáticos tóxicos e, consequentemente, efeitos colaterais graves e desconforto ao paciente. Sendo assim existe a necessidade de uma otimização das formulações orais contendo AZT. Os sistemas de liberação de fármacos com propriedades mucoadesivas podem ser uma alternativa para melhorar as propriedades biofarmacêuticas, pois permitem o contato íntimo do fármaco com a mucosa intestinal e por um tempo prolongado, o que pode melhorar a biodisponibilidade de determinados fármacos, como o AZT. As dispersões sólidas (DS) são um tipo de sistema de liberação de fármaco que visam melhorar a biodisponibilidade de fármacos com baixa biodisponibilidade. Para desenvolvimento destes sistemas, vários materiais poliméricos podem ser utilizados, dentre eles o ftalato de hidroxipropil metilcelulose (HPMCP), com propriedade gastrorresistentes e mucoadesiva e o glicolato sódico de amido (GSA), que é um polímero intumescível e mucoadesivo. No desenvolvimento do trabalho as dispersões foram preparadas a partir da técnica de evaporação do solvente, contendo AZT, GSA e HPMCP nas proporções 1:5:7,5, 1:5:10 e 1:5:15, respectivamente, sendo obtidas com êxito a partir da técnica escolhida. A análise granulométrica e as fotomicrografias das amostras demonstraram uma redução no tamanho das partículas. A análise da mucoadesão ...

A arte do teatro na educação durante a infância: a percepção dos professores acerca de suas contribuições

Seeking new ways to be used in the process of teaching and learning, he turned a look at alternative lines of research, going to value the arts in education, and inside, there has been a major focus of the relationship to both the theater and education. Currently, the theater has been the subject of research in education and has been also widely used as an educational resource, and its adoption by professionals is based on studies showing the contributions of the theater to child development. The theater, while playing, artistic expression and involves imagination, creation and sociability.This paper presents child development in all its phases, the importance of games, especially the symbolic games, during this process, through the perspective of Jean Piaget, a brief history of the theater within the education and the contributions actuallyits use as methodology of teaching and learning brings to children's development of the early years of elementary school, bringing the discussion as teachers' perception about the real possibility of its use in schools as a way of teaching and learning. This research aimed to understand the dialogic relationship between theater and basic education, emphasizing its most striking features, emphasize its presence in the teaching and learning in basic education, focusing on the early years of primary education; see how the skills developed with drama can help develop cognitive, psychological, social and moral development of children, performing an initial survey on the possibilities of using the theater within the lesson plans for teachers in the first grade of elementary school and learn the opinions of professional education on theresearch subject, being held with four teachers who teach in the first years of elementary education at a public school in Santa Cruz do Rio Pardo, ...(Complete abstract click electronic address below)

Auditoria energética em caldeira de monóxido de carbono

Within the concepts of sustainability, energy audit magnified its importance in managing systems in industrial plants. Can reduce waste and save energy representative, the improvement and development of thermal and electrical systems can be very attractive to business. With the focus on a boiler generating steam, the energy audit aimed to increase efficiency and eliminate energy losses of the heat engine. The boiler in question is commonly called CO boiler because most of the calorific power provided comes from this. Using a fuel gas from the catalyst regeneration process, it has featured in the boiler power generation system of the refinery. Burning a mixture of gaseous components from discarded into the atmosphere, the heat engine can generate tons of steam just as the other boilers installed. The challenge was to work with this gas mixture and obtain maximum efficiency, reduce moisture and enjoy the warmth of the heat exchange have been studied and recommended. Every project, from evaluation of the variables in the composition of fuel gas, to the using of heat exchangers and refrigeration system are suitable for evaluation and improvements

Sistema de recomendação de produtos online baseado em palavras-chave

This project aims to explore the many methods used for the development of recommendation systems to user ’ s items and apply the content - based recommendation method on a prototype system whose purpose is to recommend books to users. This paper exposes the most popular methods for creating systems capable of providing items (products) according to user preferences, such as collaborat ive filtering and content - based. It also point different techniques that can be applied to calculate the similarity between two entities, for items or users, as the Pearson ’s method, calculating the cosine of vectors and more recently, a proposal to use a Bayesian system under a Dirichlet distribution. In addition, this work has the purpose to go through various points on the design of an online application, or a website, dealing not only oriented algorithms issues, but also the definition of development to ols and techniques to improve the user’s experience. The tools used for the development of the page are listed, and a topic about web design is also discussed in order to emphasize the importance of the layout of the application. At the end, some examples of recommender systems are presented for curiosity , learning and research purposes

Anteprojeto de um sistema digital de proteção e controle aplicado em uma subestação elétrica industrial

With the growth of the demand on electric energy in the last decades, the urban distribution and transmission systems have experienced a bigger necessity to improve on the substations, the automation procedures and techniques on the operation maneuvers of such systems, in a sense that better attends the quality levels, availability, continuity and operational reliability. In this way, the objective of the present paper is to perform a study of protection and control on an electrical industrial system involving the procedures of digitizing and maneuvers automatism utilizing operational techniques and other pertinent information used in a typical high-voltage Industrial Electrical System. Analysis were made on short-circuits to specify the main components of the 138 [kV] substation, in addition, there were used digital MiCOM relays to make the protection of the present elements. With that, a program was developed to allow the user to monitor the condition of circuit-breakers through a supervision screen being able to simulate some kinds of faults, as well as observing the characteristics of each device. This way, the importance of having a fast and reliable system that ensures the equipment’s protection and the industrial process continuity due to faults on the electrical system is noticeable. It’s important to highlight that all this digitizing was mainly favored by the development of digital technology on the last years, mainly on microelectronics, also with the appearance of supervision gadgets allowing the development of complex systems in supervision and electric energy control

Fitotoxicidade e análise fitoquímica a partir de folhas de cinco espécies de Cerrado

Pós-graduação em Biociências - FCLAS

Coroas estéticas anteriores em cerâmica metal-free: relato de caso clínico

Society's change of parameters for health and aesthetics has resulted in an increased demand for dental treatments. Nowadays, ceramics systems have shown a substantial development, becoming more reliable and predictable. Dental ceramics, besides being chemically stable, present excellent optical properties when compared to dental structures, thus assuring a special position in the list of aesthetic restorative materials. OBJECTIVE, CASE REPORT AND CONCLUSION: This article describes a successful clinical procedure involving the anterior teeth aesthetics, which were restored with all-ceramic crowns (IPS e.max® Ivoclar Vivadent).

Validation of high-performance liquid chromatographic method for analysis of fluconazole in microemulsions and liquid crystals

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Simulação computacional por elementos finitos de múltiplas fissuras em sólidos usando técnica de fragmentação da malha

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Desempenho de crianças com deficiência auditiva e implante coclear em tarefas de seleção de e de nomeação de figuras

The aim of this study was to investigate the development of specific domains of Numerical Cognition (Number Sense – NS, Number Comprehension – NC, Number Production – NP, and Calculation – CA) in Brazilian children with Specific Learning Disorders. The study included 72 children (36 boys), from 9-to 10-years-old, enrolled in 4th and 5th years of elementary school of public schools at countryside of Sao Paulo State, Brazil. They were divided into three groups: control (CT, N = 42), Developmental Dyslexia (DL, N = 11) and Developmental Dyscalculia combined with dyslexia (DDc, N = 19). All participants had intellectual level within the normal range, however, children from the last two groups had Learning Disorders classified by School Achievement Test - TDE (Stein, 1994) and DDc children received necessarily classification as 'inferior' in Arithmetic Test of TDE. The children did not differ in NS. DL and DDc children showed slight deficits in NC. However, DDc children had moderate in NP and mild to moderate deficits in CA, which indicates a more generalized impairment in Numerical Cognition. Furthermore, DDc children showed discrepancy in Numerical Cognition performance when compared to the other groups. Thus, children with Learning Disorders showed different performances in Numerical Cognition, although both groups had preserved SN, DDc children showed higher deficits and discrepancy in relation DL and typically developing children.

Arquitetura de um sistema multiagente autônomo para supervisão e controle

This paper presents a multi-agent architecture that was designed to develop processes supervision and control systems, with the main objective to automate tasks that are repetitive and stressful, and error prone when performed by humans. A set of agents were identified, based on the study of a number of applications found in the literature, that use the approach of multi-agent systems for data integration and process monitoring to faults detection and diagnosis, these agents are used as basis of the proposed multi-agent architecture. A prototype system for the analysis of abnormalities during oil wells drilling was developed.