Use of a Digital Model Educational Training Model of Mental, Physical Education in Modern Technical in Progress

Presentamos en esta investigación un modelo pedagógico con utilización de las TIC para la enseñanza de la Física Moderna en el Instituto Federal. El modelo está adaptado a las teorías del aprendizaje significativo de Ausubel y modelos mentales, analizados e implementados para transformar el aprendizaje de la Física Moderna. Esta propuesta busca facilitar el aprendizaje a través de la construcción de mapas conceptuales para mostrar la formación de modelos mentales. Presentamos los resultados que muestran un resultado positivo referido al aprendizaje de los alumnos de tercer curso de una escuela secundaria.We report an experimental work at the Federal Institute in PortoAlegre, Brasil, where a professor in the physics laboratory and by using ICTs, establishes a teaching model for Modern Physics. Adapted theories, as Ausubel meaningful learning and mental models, are studied, analyzed and implemented in order to make the learning potentially effective. This proposed teaching model seeks to facilitate the learning process by means of concept maps which shows the mental models formation. Quantitative results show a positive impact in the learning of third graders of junior high school

Reproducao em cativeiro do camarao rosa P. Paulensis (Perez Farfante, 1967) : estudo comparativo de diferentes...

Trabalho de Conclusão de Curso - Universidade Federal de Santa Catarina. Curso de Agronomia

Resurgence and renormalons in the one-dimensional Hubbard model

We use resurgent analysis to study non-perturbative aspects of the one-dimensional, multicomponent Hubbard model with an attractive interaction and arbitrary filling. In the two-component case, we show that the leading Borel singularity of the perturbative series for the ground-state energy is determined by the energy gap, as expected for superconducting systems. This singularity turns out to be of the renormalon type, and we identify a class of diagrams leading to the correct factorial growth. As a consequence of our analysis, we propose an explicit expression for the energy gap at weak coupling in the multi-component Hubbard model, at next-to-leading order in the coupling constant. In the two-component, half-filled case, we use the Bethe ansatz solution to determine the full trans-series for the ground state energy, and the exact form of its Stokes discontinuity.Comment: 37 pages, 4 figures, v3: minor clarifications and correction

The interpreters and the historical formation of Brazil : the first four centuries of a forgotten history

A formação histórica do Brasil muito deveu ao trabalho indispensável dos intérpretes desde o chamado “descobrimento” até bem avançado o século XIX. Neste artigo, destacamos a necessidade de conceder maior visibilidade aos intérpretes e à sua contribuição para a história cultural e linguística do Brasil, de modo que se comece a traçar um retrato mais fidedigno das complexas relações entre línguas, povos e culturas que caracterizaram os quatro primeiros séculos dessa história. Para tanto, destacamos o papel desses agentes culturais para uma reescrita da história da tradução no Brasil. Estes que permanecem marginalizados ou mesmo invisíveis na historiografia geral se tornam aqui agentes primordiais para a formação histórica do Brasil em todas as suas etapas.Brazil’s historical formation owes very much to the indispensable work of interpreters since the so-called ‘discovery’ until well advanced the 19th century. In this paper, we highlight the necessity of giving more visibility to interpreters and their contribution to Brazil’s cultural and linguistic history, in order to allow us to draw a more trustworthy picture of the complex relations between cultures, peoples and languages that characterized the country’s first four centuries. To do so, we emphasize the role these cultural agents have played for a re-writing of the translation history in Brazil. These agent, left aside or even invisible in general historiography, become here fundamental to the historical formation of Brazil in all its phases

On the structure of trans-series in quantum field theory

Many observables in quantum field theory can be expressed in terms of trans-series, in which one adds to the perturbative series a typically infinite sum of exponentially small corrections, due to instantons or to renormalons. Even after Borel resummation of the series in the coupling constant, one has to sum this infinite series of small exponential corrections. It has been argued that this leads to a new divergence, which is sometimes called the divergence of the OPE. We show that, in some interesting examples in quantum field theory, the series of small exponential corrections is convergent, order by order in the coupling constant. In particular, we give numerical evidence for this convergence property in the case of the free energy of integrable asymptotically free theories, which has been intensively studied recently in the framework of resurgence. Our results indicate that, in these examples, the Borel resummed trans-series leads to a well defined function, and there are no further divergences.Comment: 31 pages, 7 figure