New self-dual solutions of SU(2) Yang-Mills theory in Euclidean Schwarzschild space

We present a systematic study of spherically symmetric self-dual solutions of SU(2) Yang-Mills theory on Euclidean Schwarzschild space. All the previously known solutions are recovered and a new one-parameter family of instantons is obtained. The newly found solutions have continuous actions and interpolate between the classic Charap and Duff instantons. We examine the physical properties of this family and show that it consists of dyons of unit (magnetic and electric) charge.Comment: 12 pages, 5 figures. To appear in Phys Rev

The Variable-Order Fractional Calculus of Variations

This book intends to deepen the study of the fractional calculus, giving special emphasis to variable-order operators. It is organized in two parts, as follows. In the first part, we review the basic concepts of fractional calculus (Chapter 1) and of the fractional calculus of variations (Chapter 2). In Chapter 1, we start with a brief overview about fractional calculus and an introduction to the theory of some special functions in fractional calculus. Then, we recall several fractional operators (integrals and derivatives) definitions and some properties of the considered fractional derivatives and integrals are introduced. In the end of this chapter, we review integration by parts formulas for different operators. Chapter 2 presents a short introduction to the classical calculus of variations and review different variational problems, like the isoperimetric problems or problems with variable endpoints. In the end of this chapter, we introduce the theory of the fractional calculus of variations and some fractional variational problems with variable-order. In the second part, we systematize some new recent results on variable-order fractional calculus of (Tavares, Almeida and Torres, 2015, 2016, 2017, 2018). In Chapter 3, considering three types of fractional Caputo derivatives of variable-order, we present new approximation formulas for those fractional derivatives and prove upper bound formulas for the errors. In Chapter 4, we introduce the combined Caputo fractional derivative of variable-order and corresponding higher-order operators. Some properties are also given. Then, we prove fractional Euler-Lagrange equations for several types of fractional problems of the calculus of variations, with or without constraints.Comment: The final authenticated version of this preprint is available online as a SpringerBrief in Applied Sciences and Technology at [https://doi.org/10.1007/978-3-319-94006-9]. In this version some typos, detected by the authors while reading the galley proofs, were corrected, SpringerBriefs in Applied Sciences and Technology, Springer, Cham, 201

O uso do software Biblivre em Santa Catarina

TCC (graduação em Biblioteconomia) - Universidade Federal de Santa Catarina, FlorianópolisÉ fundamental estudar softwares no gerenciamento de sistemas de bibliotecas na Biblioteconomia. Os aspectos históricos da informatização de bibliotecas e da inserção do movimento software livre na sociedade da informação fazem parte da fundamentação teórica que abrange também o histórico e caracterização do Biblivre. Esta pesquisa teve como objetivo apresentar e caracterizar o software para gerenciamento de bibliotecas Biblivre e, especificamente, o seu uso em bibliotecas no estado de Santa Catarina. Trata-se de uma pesquisa descritiva, de caráter exploratório. O instrumento para coleta de dados foi o questionário eletrônico disponibilizado na internet, com questões abertas e fechadas possibilitando abordagens quantitativas e qualitativas. A coleta de dados foi realizada em agosto e setembro de 2010. Esta pesquisa identificou que em Santa Catarina existem 110 usuários cadastrados no site do Biblivre mas somente oito responderam ao questionário da pesquisa. Os resultados apontam que o software Biblivre atende às funções básicas de uma biblioteca, tais como os processos de seleção, aquisição, tratamento técnico (catalogação, classificação e indexação), recuperação e disseminação da informação. Os sujeitos da pesquisa mencionaram que não é um software fácil de usar. Conclui-se que o software atende os requisitos e padrões internacionais. Destaca-se que a falta de treinamento por parte dos gerenciadores do Sistema Biblivre e a não utilização do suporte técnico por parte dos usuários, faz com que muitas bibliotecas desistam de sua utilização. Palavras-chave

FDI and institutional reform in Portugal

This article analyses the effects of several geographic, economic and institutional factors on bilateral inward FDI in Europe. Moreover, it assesses the required reform effort, and the expected benefits, for Portugal to converge with the EU in the institutional variables that are relevant to attract investment. We conclude that good institutions favouring economic freedom and the ease of doing business, and geography, market size and labor costs, affect bilateral inward FDI. Political risk does not lead to significant differences in FDI across the EU. The results are robust to different methods – principal component analysis, factor-based scores and by considering several institutional indicators successively. We also find that most promising reforms arise in the financial system, corruption, property rights, and in some business regulations associated with starting a business. Increasing labor market flexibility to the EU level has also a large impact on inward FDI, but this reform comes at a comparatively higher effort.FDI, Institutional reform, Institutions, Portugal, EU

Digital resources (Internet) and analog resources (Manual) in primary education : contributions of an investigation in the supervised teaching practice

The research carried out in the Supervised Teaching Practice in the scope of the Master's Degree in PreSchool Education and Teaching of the 1st CEB had as main objective to verify the main implications, from the comparative point of view, regarding the use of a digital resources (Internet) and the use of an analogue resource (Manual) in the teaching / learning process in a group of 1st CEB. The methodology implemented was qualitative, emphasizing the application of an action research through participant observation with the collection of field notes (students, pedagogical pair, Cooperating Advisor) and semi-structured interviews with the first teachers of the 1st CEB, for a triangulation of data. The subsequent analysis of the data showed that the students presented a great motivation that was expressed in an active participation of the students and the use of the Internet created conditions for the learning to have been more motivating, interesting and engaging.info:eu-repo/semantics/publishedVersio

Digital resources (Internet) and analog resources (Manual) in primary education : contributions of an investigation in the supervised teaching practice

The research carried out in the Supervised Teaching Practice in the scope of the Master's Degree in PreSchool Education and Teaching of the 1st CEB had as main objective to verify the main implications, from the comparative point of view, regarding the use of a digital resources (Internet) and the use of an analogue resource (Manual) in the teaching / learning process in a group of 1st CEB. The methodology implemented was qualitative, emphasizing the application of an action research through participant observation with the collection of field notes (students, pedagogical pair, Cooperating Advisor) and semi-structured interviews with the first teachers of the 1st CEB, for a triangulation of data. The subsequent analysis of the data showed that the students presented a great motivation that was expressed in an active participation of the students and the use of the Internet created conditions for the learning to have been more motivating, interesting and engaging.info:eu-repo/semantics/publishedVersio

Development of a software for the design of adhesive joints

Tese de mestrado integrado. Engenharia Mecânica. Faculdade de Engenharia. Universidade do Porto. 200

In-company project: corporate innovation within a national postal company with almost 500 years

The main purpose of this project is to understand how companies can build an efficient relationship model with the startup ecosystem through corporate innovation by following a service design thinking model. In this case, the model will be applied to CTT – Correios de Portugal, the unique startup created in Portugal with almost 500 years of existence and recognized internationally for the quality of the service provided and for the innovative character, having won a few awards during the years, such as Excellence Brand of 2018 and Trusted Brand of 2018, both awarded by Superbrands. Porter (1992) argue that corporate innovation it is a success factor that contributes to competitive advantage. In a sector that is facing numerous challenges, such as dematerialization and digitalization of services, which contributes to the decrease of mail that, according this CTT’s Annual Report from 2017, is still the service that underwrites the most for CTT’s operating income (71%), CTT seeks to find scale up solution to reinvent its business in order to optimize their processes and minimize costs. Although corporate innovation faces serious financial constraints (Hsu et al., 2014; Cornaggia et al., 2015) startups can be the missing piece to find scale up solutions. Typically, a startups ecosystem has the agility that corporate companies don’t have – from one side corporate companies have resources, scale and implemented process while startups, usually, have the willingness to take risks and the will to have a rapid growth. (Weiblen & Chesbrough, 2015). This relationship is proven, through a study conducted by Gust (a platform for provision and management of investments) named “European Accelerator Report 2016”, which affirms that there is a trend of acceleration programs with startups in Europe. As the same study mention, this trend could be justified, in one hand, because companies are beginning to discover that accelerators are an efficient and effective way to increase engagement with startups and, on the other hand because companies, typically, have limited skills which increases the demand of outsourcing services. At last, this study takes in consideration, a study, from CTT, conducted to 47 postal operators and 25 Portuguese’s companies, that already have built a relationship model with the startup ecosystem, aiming to get information and knowledge about how international postal companies and Portuguese companies, from different sectors, are building their relationship with startups ecosystem; and additionally, a survey, from CTT, sent to a data base of 500 startups, with a sample of 47 answers, to better understand their needs in the decision-making process of a potential business partner. These studies will help finding and tuning a proper solution for CTT, aligned with not only CTT’s main objectives and return goals but also with startups needs. Hence, this project aims to find and propose an implementation plan for a new relationship model with startups for CTT, expressing the key elements for the success of the solution and the estimated costs and potential returns.O principal objetivo deste projeto é entender como as empresas podem construir um modelo eficiente de relacionamento com o ecossistema de startups através da inovação corporativa, seguindo um modelo de service design thinking. Neste caso, o modelo será aplicado aos CTT - Correios de Portugal, a única startup criada em Portugal com quase 500 anos de existência e reconhecida internacionalmente pela qualidade do serviço prestado e pelo seu carácter inovador, tendo ganho alguns prémios durante os últimos anos, como são exemplo os prémios Marca de Excelência 2018 e Marca de Confiança, ambos entregues pela Superbrands. Porter (1992) afirma que a inovação corporativa é um dos fatores que contribui para melhorar as vantagens competitivas de uma empresa. Num sector que enfrenta inúmeros desafios, como a desmaterialização e digitalização dos serviços, que contribuem para a diminuição do correio que continua a ser o serviço que mais peso tem no rendimento operacional dos CTT (71%), os CTT procuram encontrar soluções escaláveis, reinventando os seus negócios de forma a otimizar processos e minimizar custos. Embora a inovação corporativa frequentemente enfrente uma séria de restrições de financiamento (Hsu et al., 2014; Cornaggia et al., 2015), as startups podem ser a peça que falta para encontrar soluções escaláveis. Normalmente, um ecossistema de startups tem a agilidade que as grandes empresas não têm - de um lado, as empresas corporativas têm recursos, escala e processos implementados, enquanto as startups geralmente têm a disposição de assumir riscos e a vontade de crescer rapidamente (Weiblen & Chesbrough, 2015). Esta relação é comprovada de acordo com o estudo realizado pela Gust (plataforma de provisão e gestão de investimentos) designado “European Accelerator Report 2016”, que afirma que há uma tendência em crescimento de programas de aceleração com startups na Europa. Esta tendência é justificada, no mesmo estudo, por um lado, porque as empresas estão a começar a descobrir que os aceleradores são uma maneira eficiente e eficaz de aumentar o engagement com as startups e, por outro lado, porque as empresas têm frequentemente skills limitadas que aumentam a procura de serviços terceirizados (outsourcing). Por último, este estudo tem em consideração um estudo interno realizado pelo grupo CTT, dirigido a 47 operadores postais e 25 empresas portuguesas, com o objetivo de obter informação e conhecimento sobre a forma como as empresas postais internacionais e portuguesas, que já têm uma abordagem/modelo de relacionamento com o ecossistema de startups, estão a construir e evoluir o seu modelo com este ecossistema. Adicionalmente, o estudo tem também em consideração um questionário efetuado ao ecossistema de startups para melhor entender suas necessidades no processo de tomada de decisão de um potencial parceiro de negócios, enviado a um universo de 500 startups, com uma amostra de 47 respostas. Ambos os estudos ajudarão a encontrar e ajustar uma solução adequada para os CTT, alinhada não só com as os seus principais objetivos e metas de retorno, mas também com as necessidades das startups. Assim, este projeto visa encontrar e propor um plano de implementação de um novo modelo de relacionamento com startups para os CTT, expressando os elementos chave para o sucesso da solução, os custos estimados e potenciais retornos