Maximum Entropy Inferences on the Axion Mass in Models with Axion-Neutrino Interaction

In this work we use the Maximum Entropy Principle (MEP) to infer the mass of an axion which interacts to photons and neutrinos in an effective low energy theory. The Shannon entropy function to be maximized is suitably defined in terms of the axion branching ratios. We show that MEP strongly constrains the axion mass taking into account the current experimental bounds on the neutrinos masses. Assuming that the axion is massive enough to decay into all the three neutrinos and that MEP fixes all the free parameters of the model, the inferred axion mass is in the interval $0.1\$eV$\ <m_{A}<0.2$ eV, which can be tested by forthcoming experiments such as IAXO. However, even in the case where MEP fixes just the axion mass and no other parameter, we found that $0.1$ eV $< m_A < 6.3$ eV in the DFSZ model with right-handed neutrinos. Moreover, a light axion, allowed to decay to photons and the lightest neutrino only, is determined by MEP as a viable dark matter candidate.Comment: 13 pages, 5 figures, typos corrected, figures update

The determinants of demand in football matches during the 2007 Brazilian Championship

In view of the structural changes experienced by Brazilian football as a whole, which is becoming better regulated and more transparently managed, it is necessary to examine the factors that now determine the attendance at football matches. This paper aims to examine the demand for tickets in the 2007 Brazilian Championship games, the main competition in that sport in the country, based on the methodology created by Souza and Angelo (2004), which conducted a study for the championship of 2002. The present study, using the Ordinary Least Squares method, showed that in 2007 the demand for football was price-inelastic, but no inference can be made with respect to income. Moreover, in general, the determinants were found to be steady.microeconomics, economics of sports, theory of demand, attendance

Inferences on the Higgs Boson and Axion Masses through a Maximum Entropy Principle

The Maximum Entropy Principle (MEP) is a method that can be used to infer the value of an unknown quantity in a set of probability functions. In this work we review two applications of MEP: one giving a precise inference of the Higgs boson mass value; and the other one allowing to infer the mass of the axion. In particular, for the axion we assume that it has a decay channel into pairs of neutrinos, in addition to the decay into two photons. The Shannon entropy associated to an initial ensemble of axions decaying into photons and neutrinos is then built for maximization.Comment: Contributed to the 13th Patras Workshop on Axions, WIMPs and WISPs, Thessaloniki, May 15 to 19, 201

Lugares de memória : a Ponte da Misarela

Dissertação de mestrado em Património e Turismo CulturalEste trabalho tem como ponto de partida as lendas da Ponte da Misarela: os baptizados à meia-noite, no meio da ponte, e a Lenda da Ponte do Diabo. Destas duas lendas, é dada maior relevância aos baptizados no ventre da mãe, que encontramos apenas em Trás-os-Montes, no Minho e na Galiza. Assim, partindo desta tradição na Misarela, estabelecem-se as relações com as outras pontes onde uma tradição similar ocorre ou ocorreu. Ao mesmo tempo que se procura entender o que está na origem desta tradição, fazendo uma pequena incursão na mitologia da água, do noroeste peninsular, bem como nas suas tradições e superstições ligadas ao baptismo e ao primeiro banho do recém-nascido. Relativamente às lendas das pontes do diabo, procuraram-se as referências a essas pontes, sobretudo em Portugal. Essas lendas também surgem com muita frequência por toda a Europa. Trata-se de um valioso património imaterial comum a vários povos. Procuramos, ainda, fundamentar a abordagem às lendas na paisagem dos espaços ecológicos onde elas são referenciadas. Tanto para o surgimento do discurso do fantástico, concretizado nas lendas, como para uma estratégia de uso e criatividade de tratamento destes espaços em conteúdos e práticas turísticas, a especificidade da paisagem revelou-se fator primordial. Por fim, estabeleceu-se um minucioso roteiro turístico, de dois dias, fazendo uma incursão pelas pontes ligadas aos baptismos no ventre, no norte de Portugal. Nesse roteiro, relevam-se também outros aspectos de cada uma dessas pontes, que sejam uma mais-valia para quem a visita. Com este roteiro, o património imaterial destas pontes insere-se novamente na tradição oral, sendo as lendas contadas no local onde tiveram origem.The starting point of this work is the Misarela bridge legends: the midnight baptism in the middle of the bridge, and the legend of the Devil´s Bridge. Of these two legends we will give more importance to legend of the baptized in the mother`s womb, that we only find in Trás-os-Montes, Minho and Galicia. So, starting on this tradition in Misarela, we´re going to establish connections with other bridges where a similar tradition exist or existed. At the same time we will try to understand what´s behind this tradition, we´ll study the water mythology in the peninsular northwest, as well as the traditions and superstitions connected with the baptism and the first bath of the newborn. Regarding the legends of the Devil´s bridges, we´ll seek references of those bridges, especially in Portugal. These Legends also appear frequently throughout Europe. It´s a valuable intangible heritage common to many people. We also seek to justify our approach to the lengends with the ecological landscape where they are referenced. The landscape specificity was a key factor, either to the emerge of the fantastic speech, brought in the legends, or for use of strategy and creativity treatment of these spaces to create tourist content and practices. Finally, we established a two daysdetailed tour itinerary, making a journey through the bridges connected to the baptism in the womb in northern Portugal. In this itinerary we also show other aspects of each of these bridges, which are relevant for those who visit them. With this itinerary, the intangible heritage of these bridges falls again in the oral tradition, by being told in their place of origin

Plataforma de serviços para monitorização da cadeia de valor do pescado

Traceability in the food value chain is a topic of interest due to the advantages it brings to both the consumers, producers and regulatory authorities. This thesis describes my contributions during the design and implementation of a microservice based middleware for the Portuguese fish value chain considering current practices in the industry and the requirements of the stakeholders involved in the project, with the goal of integrating all the traceability information available from each operator to provide customers with the full story of the products they purchase. During this project I assumed many roles such as development, operations and even some security allowing me to improve my skills in all these fields and experimenting with the latest cloud native technologies such as containers and with DevOps practices.A rastreabilidade na cadeia de valor alimentar é um tema de interesse pelas vantagens que traz aos consumidores, produtores e autoridades reguladoras. Esta dissertação descreve as minhas contribuições durante a conceção e implementação de um middleware baseado em micro-serviços para a cadeia de valor do pescado portuguesa considerando as práticas atuais da indústria e os requisitos das partes interessadas envolvidas no projeto, com o objetivo de integrar toda a informação de rastreabilidade disponível de cada um dos operadores para fornecer aos clientes a história completa dos produtos que adquirem. Durante este projeto, assumi muitas funções, como desenvolvimento, operações e até mesmo alguma segurança, o que me permitiu melhorar as minhas capacidades em todos essas disciplinas e experimentar as mais recentes tecnologias nativas da nuvem, como contentores e práticas de DevOps.Mestrado em Engenharia Informátic