Reconfiguração de sistemas de distribuição utilizando metaheurísticas e critérios de confiabilidade

In an ever more competitive environment, power distribution companies must satisfy two conflicting objectives: minimizing investment costs and the satisfaction of reliability targets. The network reconfiguration of a distribution system is a technique that well adapts to this new deregulated environment for it allows improvement of reliability indices only opening and closing switches, without the onus involved in acquiring new equipment. Due to combinatorial explosion problem characteristic, in the solution are employed metaheuristics methods, which converge to optimal or quasi-optimal solutions, but with a high computational effort. As the main objective of this work is to find the best configuration(s) of the distribution system with the best levels of reliability, the objective function used in the metaheuristics is to minimize the LOLC - Loss Of Load Cost, which is associated with both, number and duration of electric power interruptions. Several metaheuristics techniques are tested, and the tabu search has proven to be most appropriate to solve the proposed problem. To characterize computationally the problem of the switches reconfiguring was developed a vector model (with integers) of the representation of the switches, where each normally open switch is associated with a group of normally closed switches. In this model simplifications have been introduced to reduce computational time and restrictions were made to exclude solutions that do not supply energy to any load point of the system. To check violation of the voltage and loading criteria a study of power flow for the ten best solutions is performed. Also for the ten best solutions a reliability evaluation using Monte Carlo sequential simulation is performed, where it is possible to obtain the probability distributions of the indices and thus calculate the risk of paying penalty due to not meeting the goals. Finally, the methodology is applied in a real Brazilian distribution network, and the results are discussed.

Cartas e escrita: práticas culturais, linguagem e tessitura da amizade

Pós-graduação em Educação - IBRC

Representação gráfica e linguagem cartográfica tátil: estudo de casos

Pós-graduação em Geografia - IGCE

Uso das geotecnologias para aquisição de dados destinados a gestão agropecuária e ambiental do municipio de Vitória Brasil-SP

Pós-graduação em Agronomia - FEIS

A Linguagem, o Texto e o Documento no contexto da Ciência da Informação

The relation among the concepts text, document and information is discussed, with the aim of clarifying the concept of document, with a focus in the field of economic information organization and management. A document is a medium in which information is recorded and manifested. A document is, thus, material, has a purpose, can be organized and treated for its improved dissemination, and has a specific subject and context.

Estudo Psicológico de um Caso de Distúrbio de Linguagem

Our intention was to describe the case of a six-year-old boy, carrier of a language disturbance associated to neurological disorders, in language therapy. Our goal was to build instruments for the diagnosis of similar cases. Relating the patient's psychopathological characteristics with a neurological disease, we understood that both results in manifestations of verbal and physical aggressiveness as well as in the severe disturbance of the language. We hope we have contributed to the understanding of the disturbances of communication associated to psychogenic symptoms and of neurological disorders.

Sistema de Aquisição de Baixo Custo para um Dinamômetro Biomédico

Objective: to create a purchasing system for optimizing a low cost device fabrication itself. Method: For this purpose was designed a system which is powered by a 12V battery center. The full bridge of "Wheatstone" is powered by the central battery set to 9V. Results: The sign of the strain has a range of 0 to 30 mV which is amplified filtered by a signal conditioner own manufacturing using an LM 324. The electrical signal then passes to vary from 0 to5V which will be processed in an analog input of PIC microcontroller. Tests for the registration and interpretation of data are through software MyOpenLab. Conclusion: The work is in progress and initial results suggest that the system will be able to measure muscular strength accurately and cost-effective.

Sobre jogo de linguagem: Habermas e Wittgenstein

This paper brings notes regarding Wittgenstein’s philosophy of language and its presence in habermasian philosophy by means of the basic concept language game. The approach of language of the second Wittgenstein reaches a rather culturalist abstraction, which, however, disclaims him of the pretension of being a theoretical of language, but in Habermas, this approach is put with an intention: the systematization of the universal pragmatics, which he presents as a theory of language games.

Jogo de papéis e linguagem: diálogos possíveis entre Vigotski e Bakhtin

In this paper we present ongoing research in which we approach the regulatory role of language in role play in children aged six and seven. In research, we seek an understanding of the relationship between language, ownership and complexity of the children's game. The hypothesis guiding the research is that the dialogical relations between children and adults and among children, while playing, contribute to children's learning game. Procedures are being used interpretive ethnographic research that focuses on the human meaning of social relations, waged by the subjects in a particular historical context and its elucidation and exposition by one researcher. This approach allows closer studies of Vygotsky and Bakhtin scholars of language that emphasize the regulatory role of language in human relationships and value the dialogic exchange between researcher and researched; active subjects of the research process. The data were produced by means of observation and interview, in a field diary records, photographs and audio recordings. They are being screened in thematic groups and analyzed using interpretative narration. The participants were two teachers and two classes of the first year of an Elementary school (EMEF) School of Municipal Elementary School Crane, State of Sao Paulo, totaling 45 subjects. Bearing in mind the above assumptions, are presented and analyzed data that allow to anticipate some results.

Gênero textual narrativo e produções escritas de escolares: contribuições para a apropriação da linguagem

This paper discusses the conception of textual genres present in the National Curriculum Parameters, regarding our school model, suggesting a program of support for pedagogical practice, the use of narrative genre, from their elements that organize this genre. The written productions of students showed significant growth indicators and ownership of the genre worked.

Escolhas das letras por crianças no início da Alfabetização

A presente pesquisa tem como foco verificar como se dá a apropriação da escrita por crianças no início da alfabetização, especificamente quais os recursos utilizados pelas crianças quanto às escolhas das letras durante o ato de escrever. Tem como objetivo geral analisar o processo de aquisição da escrita; verificar quais são escolhas realizadas pelas crianças durante esse processo e como objetivos específicos verificar quais os recursos utilizados pelas crianças na apropriação da linguagem escrita; como se dá o processo de escolhas das letras na apropriação da linguagem escrita por crianças no início da alfabetização e se as escolhas das letras são feitas com base somente no oral ou se são feitas tendo como foco a função que a letra ocupa na palavra durante o ato discursivo. Para alcançar os objetivos o procedimento metodológico adotado é da pesquisa-ação. Os pressupostos teóricos têm com base os conceitos defendidos por Bakhtin sobre linguagem, enunciação, gênero do discurso, e de função e de estrutura por Vygotsky entre outros, e contribuições de Smith, sobre equivalência funcional das letras. O levantamento de dados empíricos será realizado em uma Escola Estadual na cidade de Marília, com crianças de primeiro e segundo ano do ensino fundamental. A pesquisa encontra-se em estágio inicial, mas com base nos autores mencionados podemos concluir que as crianças utilizam diversos recursos no momento de escolhas das letras e não se apóiam somente na relação grafo - fônica.

Concepções de 'palavra' em escolas de educação infantil

We searched for which conceptions twenty-three Kinden garden teachers would have of “word”, as well as for “echoes” from these conceptions in their 4-6 years old pupils. Essentially all the teachers showed a graphic and semantic conception of “word”. “Echoes” from these conception were detected in part of their pupils. The other part of children showed a conception in which could be detected enunciative, pragmatic and discursive aspects of language. Conception of teachers indicates ruptures between their pedagogic activities with literacy and their pedagogic activities with language unities such as word. These ruptures, however, not necessarily were made by part of children, who seems integrate language and literacy.

A concepção de linguagem de professoras alfabetizadoras e sua influência no ensino do ato de ler

This article aims to analyze literacy teachers’ conception of language from the classroom scenes that demonstrate the teaching of the act of reading. For the realization of the objective was carried out research in education like ethnography with two teachers in the 2nd year of elementary school a school of the Municipal located in the city of Sao Luis in Maranhão State, whose main instrument for data generation was participant observation. Also, I was guided by microgenetic analysis in order to focus our gaze to the particular aspect of the situation with attention to the “clues” to extract meaningful data. Authors such as Mikhail Bakhtin (1995, 2003) and scholars in the fi eld of reading, Josette Jolibert (1994), Elie Bajard (2007), among others, were considered core to grasp the meaning assigned by the subjects to teaching the act of reading. The fi ndings reveal that the design language of the teacher infl uences the direction of your practice, determining how to teach reading.

A complexidade da coda silábica na escrita de pré-escolares

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)