Head and scapular posture in flutists: a pilot controlled study

Instrumental practice which requires asymmetrical postures might, in the long term, potentiate musculoskeletal disorders and lead to pain. This, in turn, may have a negative impact on musical performance quality. Thus, the assessment of postural deviations among musicians is of the outmost importance in instrumental pedagogy. This study aims to compare the head and scapular posture of flutists with different levels of expertise and a control group of singers. Results suggest that flutists have a significantly more forward head posture than singers. No significant differences were found for any other head or scapular posture measurement. Contrary to what was hypothesized, years of instrumental practice did not contribute to a more asymmetrical posture.head posture; scapular posture; instrumental practice; flutists

Gravitational Collapse of Massless Scalar Field with Negative Cosmological Constant in (2+1) Dimensions

The 2+1-dimensional geodesic circularly symmetric solutions of Einstein-massless-scalar field equations with negative cosmological constant are found and their local and global properties are studied. It is found that one of them represents gravitational collapse where black holes are always formed.Comment: no figure

Perturbed Self-Similar Massless Scalar Field in the Spacetimes with Circular Symmetry in 2+1 Gravity

We present in this work the study of the linear perturbations of the 2+1-dimensional circularly symmetric solution, obtained in a previous work, with kinematic self-similarity of the second kind. We have obtained an exact solution for the perturbation equations and the possible perturbation modes. We have shown that the background solution is a stable solution.Comment: no figure

Spin-orbit mode transfer via a classical analog of quantum teleportation

We translate the quantum teleportation protocol into a sequence of coherent operations involving three degrees of freedom of a classical laser beam. The protocol, which we demonstrate experimentally, transfers the polarisation state of the input beam to the transverse mode of the output beam. The role of quantum entanglement is played by a non-separable mode describing the path and transverse degrees of freedom. Our protocol illustrates the possibility of new optical applications based on this intriguing classical analogue of quantum entanglement.Comment: 5 pages, 7 figure

Implementação e modelagem do MyReview para administração web do 2° Simpósio de Geotecnologia no Pantanal.

A realização do 2° Simpósio de Geotecnologia no Pantanal [1] gera uma grande quantidade de informações a serem armazenadas e administradas, como por exemplo: nome dos artigos, nome dos autores, nome das instituições, nome das cidades, nome dos estados, resumindo o perfil completo dos participantes. A criação de ambiente Web ou uma ferramenta computacional, foi a solução que continha flexibilidade para administrar os dados e arquivos relacionados ao projeto.Poster. Trabalho apresentado na V Mostra de Trabalhos de Estagiários e Bolsistas, Campinas, out. 2009

Reclassificação de polígonos no formato vetorial.

O processo de reclassificação (agregação ou desagregação) é necessário quando se quer gerar um novo mapa a partir de um já existente. Aqui não se trata de dados na forma matricial, mas de dados vetoriais exigidos para elaboração de mapas temáticos com certa precisão cartográfica, onde os contornos precisam possuir a foram de linha. Sendo assim o objetivo deste trabalho é desenvolver uma aplicação que possibilite a reclassificação de polígonos (classe temáticas) em outros mapas vetoriais

On the Levi-Civita solutions with cosmological constant

The main properties of the Levi-Civita solutions with the cosmological constant are studied. In particular, it is found that some of the solutions need to be extended beyond certain hypersurfaces in order to have geodesically complete spacetimes. Some extensions are considered and found to give rise to black hole structure but with plane symmetry. All the spacetimes that are not geodesically complete are Petrov type D, while in general the spacetimes are Petrov type I.Comment: Typed in Revtex, including two figures. To appear in Phys. Rev.