Chiral Breit-Wigner

Chiral symmetry and unitarization are combined into generalized Breit-Wigner expressions describing scalar resonances, which contain free parameters and allow flexible descriptions of masses, widths and pole positions. This theoretical tool is especially designed to be used in analyses of low-energy data.Comment: Talk given at the XI International Conference on Hadron Spectroscopy, Rio de Janeiro, Brazil, August 200

Tools and resources for neuroanatomy education: a systematic review

The aim of this review was to identify studies exploring neuroanatomy teaching tools and their impact in learning, as a basis towards the implementation of a neuroanatomy program in the context of a curricular reform in medical education

Surface magnetization in non-doped ZnO nanostructures

We have investigated the magnetic properties of non-doped ZnO nanostructures by using {\it ab initio} total energy calculations. Contrary to many proposals that ferromagnetism in non-doped semiconductors should be induced by intrinsic point defects, we show that ferromagnetism in nanostructured materials should be mediated by extended defects such as surfaces and grain boundaries. This kind of defects create delocalized, spin polarized states that should be able to warrant long-range magnetic interactions.Comment: 8 pages, 3 figure

GEMINI: A Generic Multi-Modal Natural Interface Framework for Videogames

In recent years videogame companies have recognized the role of player engagement as a major factor in user experience and enjoyment. This encouraged a greater investment in new types of game controllers such as the WiiMote, Rock Band instruments and the Kinect. However, the native software of these controllers was not originally designed to be used in other game applications. This work addresses this issue by building a middleware framework, which maps body poses or voice commands to actions in any game. This not only warrants a more natural and customized user-experience but it also defines an interoperable virtual controller. In this version of the framework, body poses and voice commands are respectively recognized through the Kinect's built-in cameras and microphones. The acquired data is then translated into the native interaction scheme in real time using a lightweight method based on spatial restrictions. The system is also prepared to use Nintendo's Wiimote as an auxiliary and unobtrusive gamepad for physically or verbally impractical commands. System validation was performed by analyzing the performance of certain tasks and examining user reports. Both confirmed this approach as a practical and alluring alternative to the game's native interaction scheme. In sum, this framework provides a game-controlling tool that is totally customizable and very flexible, thus expanding the market of game consumers.Comment: WorldCIST'13 Internacional Conferenc

Bacillus thuringiensis.

O controle de insetos-praga de lavouras nocivos ao homem tem sido feito com inseticidas químicos desde o início da década de 40, no século passado. Além do problema de poluição ambiental gerados, eles se mostraram tóxicos e sem especificidade, atingindo também os insetos benéficos e induzindo casos de resistência nos insetos-praga. Outros compostos químicos foram posteriormente elaborados, mas o seu emprego intensivo, tanto na agricultura quanto na saúde pública, resultou em novos casos de resistência e mesmo em resistência cruzada. Além do problema da resistência, com conseqüente redução da efetividade do controle, o uso de inseticidas químicos também levou à redução da biodiversidade nas áreas tratadas, à contaminação de alimentos, do solo e da água