Panov's theorem for weak Hopf algebras

Panov proved necessary and sufficient conditions to extend the Hopf algebra structure of an algebra R to an Ore extension R[x; sigma, delta] with x being a skew-primitive element. In this paper we extend Panov's result to Ore extensions over weak Hopf algebras. As an application we study Ore extensions of connected groupoid algebras

Sexual Harassment and Bullying in the Workplace in Portugal. Policy brief

The research project Sexual Harassment and Bullying in the Workplace was conducted by CIEG (Interdisciplinary Centre for Gender Studies), in 2015 as part of a partnership project led by CITE (Commission for Equality in Work and Employment), involving a number of different partners, with funding from EEA Grants. The starting point for this research, the findings of which are summarised in this brochure, was a comparison with the data gathered in a pioneering survey conducted in 1989 (Amâncio and Lima, 1994) on sexual harassment of women in Portugal. Considering the huge changes in society over the past 25 years, the scope of the research in 2015 was expanded to include bullying, and to include men as survey subjects, and not only women, as had previously been the case. Although the term sexual harassment is relatively recent, the abuse to which it refers, experienced by women in the workplace, is a much older phenomenon. But it was in the 1970s that the term entered the public consciousness as the feminist movement fought for change, locating sexual harassment in the wider context of inequalities of gender and power. Formerly regarded a moral or private issue, sexual harassment was now viewed as a social problem which needed to be addressed. At a later stage, the great diversity of employment situations and the complexity of gender inequalities prompted researchers to take a deeper, interdisciplinary approach to the subject, looking at both the female and male universes, their interactions, power relations and the organisational context. Introduction Bullying in the workplace is a social phenomenon to which little attention has yet been paid in Portugal, but which takes a serious toll on the physical and mental health of the individuals targeted. Internationally, research started to shed light on this problem in the 1980s, but it was in the 1990s that the debate and research in this area really developed. Both phenomena constitute an affront to human dignity, with consequences for society as a whole. In Europe, these are problems which affect tens of millions of workers of both sexes, although women are the main targets (Eurofound, 2015) Civic movements and international organisations, such as the ILO and the Council of Europe, have worked to gain greater visibility for these problems, voicing their condemnation, pushing them up the legal and political agenda, mobilising States and alerting employers, unions and public institutions to the advantages of preventing and combating these phenomena. In order to obtain a picture of sexual harassment and bullying in the workplace in Portugal, the researchers decided to combine and triangulate extensive and intensive methodologies. A representative sample of the Portuguese working population (mainland Portugal, excluding the primary sector) was surveyed by means of a questionnaire. At the same time, semi-structured interviews were conducted with men and women who had suffered bullying and/or sexual harassment.info:eu-repo/semantics/publishedVersio

Relato de experiência: construção de um ecobarrio por alunos do 9º ano do ensino fundamental a partir da leitura sobre sustentabilidade

O projeto de confecção do “Ecobarrio” surgiu durante atividades desenvolvidas na disciplina de Espanhol com as turmas do 9º ano sobre desenvolvimento sustentável. O vídeo de Leonardo Boff, “La Carta de la Tierra” foi apresentado em sala de aula e o texto discutido na íntegra entre os alunos e professor na semana anterior a Conferência Rio + 20. Após esta atividade decidimos colocar em prática a construção do “Ecobarrio”, projeto baseado no modelo espanhol de desenvolvimento sustentável. Os alunos trabalharam com determinação e, durante a construção da maquete representando o bairro foram descobertos talentos individuais que foram coadunados em torno de um objetivo comum: transformar o que já é real na Espanha e em outras partes do mundo em algo que pudesse, mesmo sendo fictício, explicitar o que almejamos para nossa realidade. A maquete do Ecobarrio reproduziu um bairro da Espanha que utiliza a energia eólica, captação das chuvas e a compostagem do lixo para gerar energia. Durante o desenvolvimento do projeto o professor discutia com os alunos os temas voltados para a Educação Ambiental na língua estrangeira. Este trabalho foi apresentado na I EXPO de CIÊNCIA e TECNOLOGIA da escola pelos alunos em português ou espanhol, de acordo com a solicitação do visitante e os aspectos voltados para Educação Ambiental e Sustentabilidade presentes na maquete eram apresentados

Avaliação de germoplasmas de arroz de sequeiro favorecido em Rio Branco, Acre.

Com o objetivo de conseguir material genético capaz de solucionar os principais problemas da cultura do arroz no Acre, vem sendo desenvolvido pela Embrapa/UEPAE de Rio Branco, um trabalho de avaliação de germoplasmas de arroz, sob a coordenação do Centro Nacional de Pesquisa de Arroz e Feijão.bitstream/item/117386/1/930.pd

Ni/Bi bilayers: The effect of thickness on the superconducting properties

Nickel/Bismuth (Ni/Bi) bilayers have recently attracted attention due to the occurrence of time-reversal symmetry breaking in the superconducting state. Here, we report on the structural, magnetic and electric characterization of thin film Ni/Bi bilayers with several Bi thicknesses. We observed the formation of a complex layered structure depending on the Bi thickness caused by the inter-diffusion of Bi and Ni which leads to the stabilization of NiBi$_{3}$ at the Bi/Ni interface. The superconducting transition temperature and the transition width are highly dependent on the Bi thickness and the layer structure. Magnetoelectric transport measurements in perpendicular and parallel magnetic fields were used to investigate the temperature-dependent upper critical field within the framework of the anisotropic Ginzburg-Landau theory and the Werthamer Helfand Hohenberg model. For thicker samples, we observed a conventional behavior, similar to that shown by NiBi$_{3}$ bulk samples, including a small Maki parameter ($\alpha_{M}$ = 0), no spin-orbit scattering ($\lambda_{SO}$= 0) and nearly isotropic coherence length ($\gamma$ = $\xi_{\perp}$(0)/$\xi_{\parallel}$(0) $\approx$ 1). The values obtained for these properties are close to those characterizing NiBi$_{3}$ single crystals. On the other hand, in very thin samples the Maki parameter increases to about $\alpha_{M}$ = 2.8. In addition, the coherence length becomes anisotropic ($\gamma$ = 0.32) and spin-orbit scattering ($\lambda_{SO}$= 1.2) must be taken into account. Our results unequivocally show that the properties characterizing the superconducting state in the Ni/Bi are strongly dependent on the sample thickness.Comment: 16 Pages and 5 figure

Comparison of a retrotransposon-based marker with microsatellite markers for discriminating accessions of Vitis vinifera.

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