Conquistas e desafios do agronegócio brasileiro.

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When does noise increase the quantum capacity?

Superactivation is the property that two channels with zero quantum capacity can be used together to yield positive capacity. Here we demonstrate that this effect exists for a wide class of inequivalent channels, none of which can simulate each other. We also consider the case where one of two zero capacity channels are applied, but the sender is ignorant of which one is applied. We find examples where the greater the entropy of mixing of the channels, the greater the lower bound for the capacity. Finally, we show that the effect of superactivation is rather generic by providing example of superactivation using the depolarizing channel.Comment: Corrected minor typo

Schmidt balls around the identity

Robustness measures as introduced by Vidal and Tarrach [PRA, 59, 141-155] quantify the extent to which entangled states remain entangled under mixing. Analogously, we introduce here the Schmidt robustness and the random Schmidt robustness. The latter notion is closely related to the construction of Schmidt balls around the identity. We analyse the situation for pure states and provide non-trivial upper and lower bounds. Upper bounds to the random Schmidt-2 robustness allow us to construct a particularly simple distillability criterion. We present two conjectures, the first one is related to the radius of inner balls around the identity in the convex set of Schmidt number n-states. We also conjecture a class of optimal Schmidt witnesses for pure states.Comment: 7 pages, 1 figur

Nuno Portas and the Spanish influence on the definition of housing policies in Portugal in the period of democratic transition

Taking the housing crisis and the SAAL program as a central interest point of architects and sociologists in the aftermath of the Portuguese revolution, this chapter tracks the influence of Spanish architecture in Portugal and the relations of Portuguese and Spanish architects, signaling the main role of Nuno Portas. It begins by introducing the background of the architecture exchange between Portugal and Spain, since the 1960’s, through the diffusion and interchange activities of Nuno Portas (section 2). It continues to discuss the role of architects on urban change during the revolutionary process from the viewpoint Joan Antonio Solans experiences and writings (Section 3). Then it takes on the social movements debate with Manuel Castells reflections and writings about the new housing policies and experiences (Section 4). Finally, a short reflection on the interchange of ideas and experiences between Portugal and Spain in presented in the conclusion (Section 5).info:eu-repo/semantics/submittedVersio

Avaliação e caracterização de frutos em acessos de patauazeiro.

O patauazeiro é uma palmeira nativa da Amazônia cujos frutos apresentam grande potencial sócio econômico, principalmente, às populações tradicionais. Mas, pouco se sabe sobre as características físicas dos frutos dessa palmeira, especialmente dos acessos disponíveis em Bancos de Germoplasma que possam auxiliar na sua domesticação. O objetivo deste trabalho foi avaliar e caracterizar frutos de acessos de patauazeiro. Para tanto, foram retiradas amostras ao acaso de dez frutos maduros por acesso, de nove acessos pertencentes ao Banco de Germoplasma da Embrapa Amazônia Oriental. De cada amostra foram avaliados nove caracteres e caracterizados dois caracteres. Os dados obtidos foram submetidos à análise de estatística descritiva. Foi constatada variação em todos os caracteres avaliados, podendo-se destacar o diâmetro longitudinal, pesos do fruto, da polpa e da semente, além da espessura da polpa, cuja variação foi superior a 20%. No que se refere à caracterização, os acessos apresentaram cor da casca violácea em duas gradações, enquanto para a polpa ocorreram duas colorações: amarela e laranja, com a primeira exibindo duas gradações. Portanto, pode-se considerar que os acessos de patauazeiro avaliados apresentam variações consideráveis para as características de frutos, podendo-se identificar genótipos com alto rendimento de polpa

Avaliação e caracterização morfológica de frutos em acessos de diferentes espécies de bacabeiras.

Espécies do gênero Oenocarpus Mart. conhecidas por bacabeiras têm grande potencial para exploração da polpa de seus frutos. A Embrapa Amazônia Oriental possui um Banco de Germoplasma dessas espécies cujos acessos encontram-se em plena fase reprodutiva, mas com escassez de informações que possam auxiliar na domesticação dessas palmeiras. Objetivo-se avaliar e caracterizar morfologicamente frutos de acessos de diferentes espécies de bacabeiras. Foram retiradas amostras ao acaso de dez frutos maduros por acesso, de quatro espécies de Oenocarpus conservadas no Banco de Germoplasma da Embrapa Amazônia Oriental. Os frutos foram avaliados para nove caracteres e caracterizados para dois, sendo submetidos à análise de estatística descritiva. Foi constatada alta variação em todos os caracteres avaliados, com destaque aos pesos do fruto, da polpa e da semente, além do rendimento da polpa com mais de 40%. Na caracterização houve variação, sendo mais forte na cor da polpa. Portanto, acessos dessas quatro espécies de bacabeiras conservados na Embrapa Amazônia Oriental têm alta variação para a maioria dos caracteres de frutos, com destaque para o rendimento de polpa e podem ser utilizados na discriminação entre e dentro das espécies

Attachment and adaptation to breast cancer: The mediating role of avoidant emotion processes

Attachment insecurity is associated with difficulties in adapting to cancer. Accumulating evidence points to the influence of avoidant emotion processes in this association. This study explored this pathway by examining the association between attachment insecurity and quality of life in women with breast cancer, and by exploring the mediating role of two avoidant emotion processes in this association. Women with breast cancer (N = 155) completed measures of attachment, emotional suppression, emotional awareness and quality of life. Avoidance of attachment was positively associated with emotional suppression (β = .29, p \u3c .01) and lack of emotional awareness (β = .27, p \u3c .01), and negatively associated with quality of life (β = −.22, p \u3c .05). Lack of emotional awareness partially mediated the relationship between attachment avoidance and quality of life (indirect effect β = −.12, p = .008). Attachment anxiety was not associated with any variable. Attachment avoidance may hinder the process of adaptation to breast cancer and difficulties in identifying and describing emotions may be partly responsible for this influence. Access to and ability to benefit from social and medical supports is likely to depend on being able to engage with others and recognise and process emotions effectively. Research and clinical implications are discussed

Attachment and adaptation to breast cancer: The mediating role of avoidant emotion processes

Attachment insecurity is associated with difficulties in adapting to cancer. Accumulating evidence points to the influence of avoidant emotion processes in this association. This study explored this pathway by examining the association between attachment insecurity and quality of life in women with breast cancer, and by exploring the mediating role of two avoidant emotion processes in this association. Women with breast cancer (N = 155) completed measures of attachment, emotional suppression, emotional awareness and quality of life. Avoidance of attachment was positively associated with emotional suppression (β = .29, p \u3c .01) and lack of emotional awareness (β = .27, p \u3c .01), and negatively associated with quality of life (β = −.22, p \u3c .05). Lack of emotional awareness partially mediated the relationship between attachment avoidance and quality of life (indirect effect β = −.12, p = .008). Attachment anxiety was not associated with any variable. Attachment avoidance may hinder the process of adaptation to breast cancer and difficulties in identifying and describing emotions may be partly responsible for this influence. Access to and ability to benefit from social and medical supports is likely to depend on being able to engage with others and recognise and process emotions effectively. Research and clinical implications are discussed

Urban planning policies to the renewal of riverfront areas: The Lisbon metropolis case

Urban planning offers various design possibilities to solve fundamental challenges faced in urban areas. These include the need to physically renew old industrial and harbour riverside areas into liveable, inclusive and sustainable living spaces. This paper investigates the way urban planning policies have helped to renew the waterfront areas in the Lisbon metropolis in the past decades. For this purpose, the contribution of the European Union (EU) and national urban development plans over the past decades are analysed. The results demonstrate an intense renewal of the waterfront areas in the Lisbon metropolitan area (LMA), particularly in Lisbon over the past three decades into leisure, ecologic and touristic areas, vis-à-vis the previous industrial and harbour vocationinfo:eu-repo/semantics/publishedVersio