Uma arquitetura para micro transações financeiras em um contexto de economia das coisas

TCC(graduação) - Universidade Federal de Santa Catarina. Centro Tecnológico. Sistemas de Informação.A Internet das coisas (IoT) revolucionou a forma como vivemos e trabalhamos. Sua capacidade de captar, compartilhar e utilizar informações para tomadas de decisão inteligentes, qualificam um grande potencial de mudança atrelado a esta tecnologia. Estes dispositivos estão cada vez mais presentes no dia-a-dia das pessoas, desde pulseiras inteligentes informando o batimento cardíaco, até casas e carros inteligentes. Da aliança desta tecnologia com Blockchain, desenvolvida para uso com a criptomoeda BitCoin e cada vez mais explorada no mundo acadêmico, nasce a Economia das Coisas (EoT). A EoT é a disponibilização de serviços digitais fornecidos por dispositivos IoT em marketplaces baseados em Blockchains. Há ainda necessidade de uma proposta de controle para as transações neste universo e é para este fim que é proposta neste trabalho, uma arquitetura de microsserviços. A versatilidade alcançada por sistemas baseados na arquitetura de microsserviços, viabiliza fácil integração de diferentes tecnologias focadas na resolução de um problema em comum. Os microsserviços podem internamente possuir das mais diversas abordagens de desenvolvimento, sem que afete a funcionalidade do sistema como um todo, podendo ser moldado na melhor forma proposta para realização de suas próprias tarefas. Assim, será apresentada uma proposta para micro transações financeiras num contexto de EoT, através de uma arquitetura de microsserviços, com apresentação de resultados obtidos em ambiente experimental desenvolvido para validar a proposta

Estudo sobre o funcionamento do mercado de câmbio do Brasil

TCC (graduação) - Universidade Federal de Santa Catarina, Centro Sócio Econômico, Curso de Administração.O objetivo deste trabalho é o de descrever o funcionamento do mercado de câmbio no Brasil, como as mudanças que ocorreram na política cambial brasileira influenciaram a taxa de câmbio do real e também fazer uma avaliação da volatilidade da taxa de câmbio no período de maio de 2011 a maio de 2016. Neste trabalho será descrito como a política cambial brasileira transformou-se, seu início, as principais ações tomadas ao longo dos anos, a estabilização cambial ocorrida com o Plano Real bem como a mudança para a taxa de câmbio flutuante. Este estudo também procura descrever a estrutura e o funcionamento do mercado de câmbio, falando de suas funções, operações e operadores que compõe este mercado, bem como sua estrutura no Brasil, que interage neste mercado através do Sistema Financeiro Nacional. Este trabalho também fala sobre o risco cambial e faz uma análise da volatilidade da taxa de câmbio no Brasil, avaliando a volatilidade no curto e longo prazo, levando em consideração uma série temporal de cinco anos. A conclusão a que chegou-se foi a de que a volatilidade da taxa de câmbio é maior no longo prazo do que no curto prazo.The objective of this study is to describe the functioning of the foreign exchange market in Brazil, how the changes that occurred in the Brazilian exchange rate policy influenced the real exchange rate and assess the volatility of the exchange rate from May of 2011 to May of 2016. This work will describe how the brazilian exchange rate policy transformed over time, it’s beginning, the main actions taken over the years, the exchange rate stabilization that occurred with the Real Plan and the shift to a floating exchange rate. This study also aims to describe the structure and functioning of the foreign exchange market, talking about functions, operations and operators that make up this market and its structure in Brazil, which interacts in this market through the National Financial System. This paper also talks about the exchange risk and analyzes the volatility of the exchange rate in Brazil, assessing the volatility in the short and long term, taking into account a time series of five years. The conclusion reached is that the exchange rate volatility is bigger on long term than in the short term

GESTÃO ACADÊMICA E ADMINISTRATIVA UNIVERSITÁRIA EMPREENDEDORA

O estudo busca apresentar a importância de uma gestão acadêmica e administrativa universitária empreendedora, que propicie espaços acolhedores para o desenvolvimento e expansão de ideias dos gestores universitários. Os intraempreendedores neste estudo são os gestores universitários que conciliam seus objetivos próprios com os da instituição universitária em que trabalham. O apoio a ideias que podem dispor em seu ambiente universitário é um dos fatores determinantes para o sucesso da gestão acadêmica e administrativa universitária empreendedora. O artigo foi desenvolvido por intermédio de pesquisas bibliográficas em obras e sites da internet. Neste estudo observaram-se fatores e características que precisam estar presentes nas universidades para que haja uma gestão acadêmica e administrativa universitária empreendedora. Entre eles, o mais importante talvez não seja a remuneração que os gestores recebem, e sim a liberdade dada para solucionar problemas ou para dar andamento a um projeto

Implications of an exogenous shock (COVID-19) on wine tourism business: A Portuguese winery perspective

This study investigates the impact of an exogenous and unexpected shock (COVID-19) on the wine tourism business from the winery\u27s perspective. A sample of 146 Portuguese wineries was surveyed. The econometric results show that the share of wine tourism sales, the amount of dependence on exports and the assertiveness of brand recognition have a structural effect on direct-to-consumer tasting room wine sales, even when the winery\u27s business is disrupted by a shock that degrades the dynamics and flows of international trade. The research establishes a starting point that allows to understand the implications of an exogenous shock on the structure of the winery\u27s business, calling for further research on the firm\u27s economic performance as well as on the consumer\u27s behaviour in a post-pandemic context

Recombinant pediocin in Lactococcus lactis:increased production by propeptide fusion and improved potency by co-production with PedC

We describe the impact of two propeptides and PedC on the production yield and the potency of recombinant pediocins produced in Lactococcus lactis. On the one hand, the sequences encoding the propeptides SD or LEISSTCDA were inserted between the sequence encoding the signal peptide of Usp45 and the structural gene of the mature pediocin PA-1. On the other hand, the putative thiol-disulfide oxidoreductase PedC was coexpressed with pediocin. The concentration of recombinant pediocins produced in supernatants was determined by enzyme-linked immunosorbent assay. The potency of recombinant pediocins was investigated by measuring the minimal inhibitory concentration by agar well diffusion assay. The results show that propeptides SD or LEISSTCDA lead to an improved secretion of recombinant pediocins with apparently no effect on the antibacterial potency and that PedC increases the potency of recombinant pediocin. To our knowledge, this study reveals for the first time that pediocin tolerates fusions at the N-terminal end. Furthermore, it reveals that only expressing the pediocin structural gene in a heterologous host is not sufficient to get an optimal potency and requires the accessory protein PedC. In addition, it can be speculated that PedC catalyses the correct formation of disulfide bonds in pediocin.</p

Jet size dependence of single jet suppression in lead-lead collisions at sqrt(s(NN)) = 2.76 TeV with the ATLAS detector at the LHC

Measurements of inclusive jet suppression in heavy ion collisions at the LHC provide direct sensitivity to the physics of jet quenching. In a sample of lead-lead collisions at sqrt(s) = 2.76 TeV corresponding to an integrated luminosity of approximately 7 inverse microbarns, ATLAS has measured jets with a calorimeter over the pseudorapidity interval |eta| < 2.1 and over the transverse momentum range 38 < pT < 210 GeV. Jets were reconstructed using the anti-kt algorithm with values for the distance parameter that determines the nominal jet radius of R = 0.2, 0.3, 0.4 and 0.5. The centrality dependence of the jet yield is characterized by the jet "central-to-peripheral ratio," Rcp. Jet production is found to be suppressed by approximately a factor of two in the 10% most central collisions relative to peripheral collisions. Rcp varies smoothly with centrality as characterized by the number of participating nucleons. The observed suppression is only weakly dependent on jet radius and transverse momentum. These results provide the first direct measurement of inclusive jet suppression in heavy ion collisions and complement previous measurements of dijet transverse energy imbalance at the LHC.Comment: 15 pages plus author list (30 pages total), 8 figures, 2 tables, submitted to Physics Letters B. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HION-2011-02

Game Plan: What AI can do for Football, and What Football can do for AI

The rapid progress in artificial intelligence (AI) and machine learning has opened unprecedented analytics possibilities in various team and individual sports, including baseball, basketball, and tennis. More recently, AI techniques have been applied to football, due to a huge increase in data collection by professional teams, increased computational power, and advances in machine learning, with the goal of better addressing new scientific challenges involved in the analysis of both individual players' and coordinated teams' behaviors. The research challenges associated with predictive and prescriptive football analytics require new developments and progress at the intersection of statistical learning, game theory, and computer vision. In this paper, we provide an overarching perspective highlighting how the combination of these fields, in particular, forms a unique microcosm for AI research, while offering mutual benefits for professional teams, spectators, and broadcasters in the years to come. We illustrate that this duality makes football analytics a game changer of tremendous value, in terms of not only changing the game of football itself, but also in terms of what this domain can mean for the field of AI. We review the state-of-the-art and exemplify the types of analysis enabled by combining the aforementioned fields, including illustrative examples of counterfactual analysis using predictive models, and the combination of game-theoretic analysis of penalty kicks with statistical learning of player attributes. We conclude by highlighting envisioned downstream impacts, including possibilities for extensions to other sports (real and virtual)

Measurement of jet suppression in central Pb-Pb collisions at root s(NN)=2.76 TeV

The transverse momentum(p(T)) spectrum and nuclear modification factor (R-AA) of reconstructed jets in 0-10% and 10-30% central Pb-Pb collisions at root s(NN) = 2.76 TeV were measured. Jets were reconstructed using the anti-k(T) jet algorithm with a resolution parameter of R = 0.2 from charged and neutral particles, utilizing the ALICE tracking detectors and Electromagnetic Calorimeter (EMCal). The jet p(T) spectra are reported in the pseudorapidity interval of \eta(jet)\ 5 GeV/c to suppress jets constructed from the combinatorial background in Pb-Pb collisions. The leading charged particle requirement applied to jet spectra both in pp and Pb-Pb collisions had a negligible effect on the R-AA. The nuclear modification factor R-AA was found to be 0.28 +/- 0.04 in 0-10% and 0.35 +/- 0.04 in 10-30% collisions, independent of p(T), jet within the uncertainties of the measurement. The observed suppression is in fair agreement with expectations from two model calculations with different approaches to jet quenching. (C) 2015 CERN for the benefit of the ALICE Collaboration. Published by Elsevier B.V.Peer reviewe