Schr\"odinger formalism for a particle constrained to a surface in R13\mathbb{R}_1^3

In this work it is studied the Schr\"odinger equation for a non-relativistic particle restricted to move on a surface $S$ in a three-dimensional Minkowskian medium $\mathbb{R}_1^3$, i.e., the space $\mathbb{R}^3$ equipped with the metric $\text{diag}(-1,1,1)$. After establishing the consistency of the interpretative postulates for the new Schr\"odinger equation, namely the conservation of probability and the hermiticity of the new Hamiltonian built out of the Laplacian in $\mathbb{R}_1^3$, we investigate the confining potential formalism in the new effective geometry. Like in the well-known Euclidean case, it is found a geometry-induced potential acting on the dynamics $V_S = - \frac{\hbar^{2}}{2m} \left(\varepsilon H^2-K\right)$ which, besides the usual dependence on the mean ($H$) and Gaussian ($K$) curvatures of the surface, has the remarkable feature of a dependence on the signature of the induced metric of the surface: $\varepsilon= +1$ if the signature is $(-,+)$, and $\varepsilon=1$ if the signature is $(+,+)$. Applications to surfaces of revolution in $\mathbb{R}^3_1$ are examined, and we provide examples where the Schr\"odinger equation is exactly solvable. It is hoped that our formalism will prove useful in the modeling of novel materials such as hyperbolic metamaterials, which are characterized by a hyperbolic dispersion relation, in contrast to the usual spherical (elliptic) dispersion typically found in conventional materials.Comment: 26 pages, 1 figure; comments are welcom

Events and fortuities : infamous desires – take one...action

Neste artigo discutiremos as múltiplas possibilidades de expressões do desejo presentes em diversos cenários do contexto social, sobretudo os que perfazem territórios estéticos de performances tais como: o cinema, o teatro, a dança. Em tais cenários, os corpos se colocam em resistência às estratifcações e normatizações heteronormativas, abrindo espaço para a invenção de políticas/éticas/estéticas que ampliam a vida nas suas potencialidades. Tal discussão se dará por meio das linhas que se entrecruzam entre Psicologia, Sexualidades, Gêneros, Desejos e Cinema, eainda apresentará problematizações e proposições a partir da análise do curtametragem "Eu não quero voltar sozinho", exibido na 18ª edição do Festival Mix Brasil de Cultura da Diversidade – Cinema, Teatro, Música e Literatura. Neste sentido, propomos vislumbrar as conexões e articulações dos discursos, enunciados, imagens, sons, luzes, silêncios, técnicas e etc., que agenciam territórios existenciais que forçam o pensamento a pensar a partir da lógica das sensações e não das representações.Neste artigo discutiremos as múltiplas possibilidades de expressões do desejo presentes em diversos cenários do contexto social, sobretudo os que perfazem territórios estéticos de performances tais como: o cinema, o teatro, a dança. Em tais cenários, os corpos se colocam em resistência às estratifcações e normatizações heteronormativas, abrindo espaço para a invenção de políticas/éticas/estéticas que ampliam a vida nas suas potencialidades. Tal discussão se dará por meio das linhas que se entrecruzam entre Psicologia, Sexualidades, Gêneros, Desejos e Cinema, eainda apresentará problematizações e proposições a partir da análise do curtametragem "Eu não quero voltar sozinho", exibido na 18ª edição do Festival Mix Brasil de Cultura da Diversidade – Cinema, Teatro, Música e Literatura. Neste sentido, propomos vislumbrar as conexões e articulações dos discursos, enunciados, imagens, sons, luzes, silêncios, técnicas e etc., que agenciam territórios existenciais que forçam o pensamento a pensar a partir da lógica das sensações e não das representações.In this article we will discuss the multiple possibilities of expressions of desire present in various scenarios of the social context, especially those that make up aesthetic territories of performances such as: cinema, theater, dance. In such scenarios, bodies place themselves in resistance to heteronormative stratifcations and norms, opening space for the invention of policies/ ethics/aesthetics that extend life to its potentialities. Such discussion will take place through the lines that intersect between Psychology, Sexualities, Genders, Desires and Cinema, and will present problematizations and propositions from the analysis of the short flm "I don’t want to go back alone", screened at the 18th edition of the Mix BrasilLGBT Film Festival - Cinema, Teater, Music and Literature. In this sense, we propose to glimpse the connections and articulations of speeches, uterances, images, sounds, lights, silences, techniques, etc., that forge existential territories that force thought to think from the logic of sensations, not representations

Inspædia, Inspiring a Collaborative Intelligence Network: Designing the User Experience

The main objective of this paper is to present the interface design concept of Inspædia focused on the userexperience, to create knowledge in innovation and design and to facilitate collaborative intelligence. We considerinnovation in the disciplinary context of the design to inspire new design processes and to expand and diversify theframe of references in order to stimulate ideation in design, as well as to offer to the inspædiers a stimulatinginteraction and knowledge experience. Whereas Inspædia is malleable enough to inspire and operating a network ofcollaborative intelligence in the areas of innovation and design - the results achieved are a significant contribution toknowledge in design and (hopefully) to the science of design (since not all knowledge is science).Research Centre for Territory, Architecture and Design - CITAD Faculty of Architecture and Arts, Lusíada University of Lisbon. Lisbon, Portugal Research Centre of Architecture, Urban Planning and Design - CIAUD Faculty of Architecture of Lisbon University. Lisbon, Portugal Special Visiting Researcher, Science Without Borders Program - CAPES Federal University of Rio Grande do Sul. Porto Alegre, Brazil CAPES/BRASIL / Grant by CAPES/BRAZIL PGDesign, Architecture Faculty, Federal University of Rio Grande do Sul. Porto Alegre, Brazi

Insights on Spectrum Sharing in Heterogeneous Networks with Small Cells

This work explores the viability of 5G New Radio spectrum sharing in Ultra High Frequency (UHF), Super High Frequency (SHF) and millimetre wavebands(mmWaves) in outdoor environments. In the mmWaves the linear cellular topology is considered while in the UHF/SHF bands cells with hexagonal shape are assumed. Performance evaluation includes the study of the behaviour of PHY and supported throughput for 2.6, 3.5, 28, 38, 60 and 73 GHz. While the two-slope model is considered for the 2.6 and 3.5 GHz frequency bands, the modified Friis propagation model, with shadow fading, and different values for the standard deviation, is the considered in the millimeter wavebands. With sharing, lower system capacity is supported. We clearly observe that, for coverage distances up to circa 100 m, the supported throughput is higher at the millimetre wavebands, mainly due to the reduction that characterizes the application of the two-slope propagation model at the UHF/SHF bands.Bolsa BID/ICI-FE/Santander Universidades-UBI/2016info:eu-repo/semantics/publishedVersio

Projetos educativos municipais : que lógicas de construção, implicação e desenvolvimento?

A presente dissertação tem como objeto o estudo dos Projetos Educativos Municipais (PEM), procurando descrever, compreender e analisar a sua génese e desenvolvimento em 16 municípios da Área Metropolitana do Porto. Os PEM são instrumentos recentes da governação municipal da educação e procuram ser referências unificadoras da ação da comunidade alargada, possibilitando às populações uma oferta educativa de acordo com as suas necessidades e características. Os PEM visam identificar os pontos fortes e fracos que a comunidade/território apresentam, e consequentemente traçar linhas de ação para suprir as dificuldades observadas, potenciar, fomentar e valorizar os aspetos positivos dessas comunidades/territórios. No processo de construção do PEM, foram tidos em consideração os princípios e ideais subjacentes à Carta das Cidades Educadoras A Universidade Católica do Portuguesa, Porto (UCP) foi o parceiro estratégico e supervisor de todo o processo de construção, implicação e desenvolvimento dos diferentes PEM, para tal foi criada uma equipe técnica de consultadoria da UCP. Na construção do PEM estiveram envolvidas equipes multidisciplinares e transversais, UCP, autarquias, parceiros locais da educação e elementos com responsabilidades educativas representativos da comunidade local. Procurou-se perceber as vivências experienciadas pela equipe técnica, as suas perspetivas em todo o processo PEM. Formulou-se um conjunto de questões em torno do PEM, dando origem a um guião geral, a partir do qual se efetuaram entrevistas semiestruturadas à equipe técnica da UCP. Com os dados recolhidos das entrevistas, e através de processos metodológicos qualitativos foi possível realizar uma apreciação crítica que nos permitisse encontrar as linhas de ação, similares ou distintas, que marcaram o processo de construção do PEM na ótica dos consultores. Concluiu-se que o PEM é um instrumento relevante para a definição das políticas educativas locais, pois traduz uma estratégia educativa municipal, embora encontre muitas dificuldades de operacionalização. O PEM confere aos munícipes uma possibilidade de participação ampla e democrática na definição de políticas educativas. Contudo, apesar das sinergias estabelecidas, existe um défice de participação cívica, e como tal um reduzido trabalho colaborativo na procura de soluções que se adequem às comunidades a que pertencem.This essay aims to study the Municipal Educational Project (PEM), trying to describe, understand and analyze its genesis and development in 16 city councils of Porto Metropolitan Area. The PEM are new tools of municipal governance of education and try to be unifying references of the action of the wider community, enabling populations an educational offer according to their needs and characteristics. The PEM aim to identify the strengths and weaknesses of the community / region, and therefore draw lines of action to overcome the difficulties observed, thus enhancing, promoting and appraising the positive aspects of these communities / regions. In PEM construction process it was taken into account the principles and ideals underlying the Charter of Educating Cities. The Universidade Católica Portuguesa, Porto (UCP) has been the strategic partner and supervisor of the entire construction process, involvement and development of the various PEMs, for this reason a technical team was created with UCP counsellors. In the process of building the PEM there were involved multidisciplinary and cross teams, UCP, city councils, local education partners and representative elements with educational responsibilities of the local community. The investigator tried to understand the experiences trialed by the technical team and their perspectives throughout the PEM process. A set of issues around the PEM were formulated, resulting in an overall script, from which semi-structured interviews were conducted to the technical team of the UCP. With data collected from interviews and through qualitative methodological processes, it was possible to carry out a critical assessment that would allow us to find the lines of action, similar or different, that marked the PEM construction process from the angles of the consultants. It was concluded that the PEM is an important tool for the definition of local educational policies, because it reflects a municipal educational strategy, although many find difficulties in its implementation. The PEM grants citizens the possibility of a broad and democratic participation in defining education policies. However, despite the established synergies, there is a lack of civic participation, resulting in a reduced collaborative work on finding solutions that are appropriated to the communities to which they belong

State-owned enterprises and foreign infrastructure investment in Brazil after the 2008 international financial crisis

The article aims to analyze the participationof BNDES, Eletrobras and foreign investors ininfrastructure megaprojects in Brazil after the2008 international financial crisis. The researchadopts a heterodox, Keynesian and institutionalistperspective, to conduct an empirical analysis,using the World Bank’s database on privateparticipation in infrastructure. The results showthat the ten largest projects carried out in theBrazilian electricity sector after 2008 had theparticipation of foreign capital, of which eighthad the participation of BNDES and six with theparticipation of Eletrobras

Francesca Woodman: photography beyond the limits of representation

This paper intends to combine the relationship between photography and art, through the photographic work of American photographer Francesca Woodman (1958-1981). The analysis parameter will focus on Woodman's contribution to the discussions about photography as a medium, in particular, issues concerning the representation, thus, we seek to demonstrate how Woodman questioned photography precepts of her time and presented clues to the construction of a new photographic language more linked to art and its inventive power