Processing and electrical response of fully polymer piezoelectric filaments for e-textiles applications

This paper describes the production and characterization of novel geometries piezoelectric products with a large potential in the design and implementation of flexible sensors produced at low cost and high rates. In particular, filament shaped geometry, appropriate for integration into textiles, is developed and described.Fundação para a Ciência e a Tecnologia (FCT) - PTDC/CTM/108801/200

Processing and electrical response of fully polymer piezoelectric filaments for e-textiles applications

This paper describes the production and characterization of novel geometries for piezoelectric products with a large potential in the design and implementation of flexible sensors produced at low cost and high rates. In particular, the filament geometry, appropriate for integration into textiles, is analyzed. Piezoelectric filaments producing electrical signals under bending or traction stress, thus acting as mechanical sensors, have been produced and tested, and are presented in this paper.This work was supported by FEDER through the COMPETE Program and by the Portuguese Foundation for Science and Technology (FCT) in the framework of the Strategic Project PEst-C/FIS/UI607/20112011, PEst-C/CTM/LA0025/2011 (Strategic Project - LA 25 - 2011-2012) and PEst-C/CTM/UI0264/2011, and projects PTDC/CTM/108801/2008, PTDC/CTM/69316/2006 and PTDC/CTM-NAN/112574/2009 and former Plurianual programmes. They also wish to thank the IN2TEC initiative of the School of Engineering/University of Minho which supported some initial work on piezoelectric filaments and the COST actions MP1003 (The ‘European Scientific Network for Artificial Muscles’ (ESNAM)), and MP0902 (Composites of Inorganic Nanotubes and Polymers (COINAPO))

A política externa de Lula da Silva: a estratégia da autonomia pela diversificação Lula da Silva's foreign policy: the autonomy through diversification strategy

O objetivo deste artigo é analisar as mudanças trazidas pela política externa do primeiro governo Lula da Silva (2003-2006). Para discutir o tema, utilizaremos o trabalho de Hermann (1990) sobre as motivações das mudanças na política externa dos Estados, integrando-o com insights construtivistas, que são úteis para examinar o papel das idéias na formulação da política externa brasileira depois de 2003. Para complementar nossa análise, utilizaremos três noções - "autonomia pela distância", "autonomia pela participação" e "autonomia pela diversificação" - que explicam as principais transformações pelas quais passou a política externa brasileira da década de 1980 até meados da primeira década deste século. Concluiremos demonstrando como a idéia de "autonomia pela diversificação" se aplica melhor ao período analisado, considerando que os dois primeiros níveis de Hermann, ajustes e mudanças de programa aconteceram de fato. Sugerimos que o terceiro nível, mudanças de problemas/metas, poderá efetivar-se com a consolidação e ampliação dos dois primeiros níveis.<br>The objective of this article is to analyze the changes brought about by the foreign policy of Lula da Silva's first government (2003-2006). To discuss the topic, we will make use of Hermann's (1990) article on foreign policy change and the motivation behind it, integrating it with constructivist insights useful to examine the roles of the ideas in the formulation of the Brazilian foreign policy after 2003. To compliment our analysis, we will make use of three notions: autonomy through distance, autonomy through participation, and autonomy through diversification. These notions explain the main changes occurring in Brazilian foreign policy from 1980 through to the mid-2000s. We will conclude by demonstrating how the autonomy through diversification best applies to the aforementioned period, acknowledging that the first two levels of Hermann's theory, adjustment change and program change, did in fact happen. We suggest that the third level, problem/goal changes, can come into effect with the consolidation and amplification of the first two levels

ATLANTIC ANTS: a data set of ants in Atlantic Forests of South America

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