10,158 research outputs found

    Model studies of fluctuations in the background for jets in heavy ion collisions

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    Jets produced in high energy heavy ion collisions are quenched by the production of the quark gluon plasma. Measurements of these jets are influenced by the methods used to suppress and subtract the large, fluctuating background and the assumptions inherent in these methods. We compare the measurements of the background in Pb+Pb collisions at sNN\sqrt{s_{NN}} = 2.76 TeV by the ALICE collaboration to calculations in TennGen (a data-driven random background generator) and PYTHIA Angantyr. The standard deviation of the energy in random cones in TennGen is approximately in agreement with the form predicted in the ALICE paper, with deviations of 1-6 %\%. The standard deviation of energy in random cones in Angantyr exceeds the same predictions by approximately 40 %\%. Deviations in both models can be explained by the assumption that the single particle d2N/dydpTd^2N/dydp_T is a Gamma distribution in the derivation of the prediction. This indicates that model comparisons are potentially sensitive to the treatment of the background

    Parental involvement in sport:psychometric development and empirical test of a theoretical model

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    The purposes of the present multistudy were to develop and provide initial construct validity for measures based on the model of parental involvement in sport (Study 1) and examine structural relationships among the constructs of the model (Study 2). In Study 1 (nparents = 342, nathletes = 223), a confirmatory factor analysis was used to verify the psychometric properties of the measures. Content and construct validity were evaluated, as well individual and composite reliability. Multi-group analysis with two independent samples provided evidence of factorial invariance. In Study 2 (nparents = 754, nathletes = 438), structural equation modeling analysis supported the hypothesised model in which athletes’ perceptions of parents’ behaviours mediated the relationship between parents’ reported behaviours and the athletes’ psychological variables conducive to their achievement in sport. The findings provide support for the parental involvement in sport model and demonstrate the role of perceptions of parents’ behaviours on young athletes’ cognitions in sport

    "The Keynesian Roots of Stock-flow Consistent Macroeconomic Models: Peering Over the Edge of the Short Period"

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    This paper argues that institutionally rich stock-flow consistent models—that is, models in which economic agents are identified with the main social categories/institutional sectors of actual capitalist economies, the short period behavior of these agents is thoroughly described, and the "period by period" balance sheet dynamics implied by the latter is consistently modeled—are (1) perfectly compatible with John Maynard Keynes's theoretical views, (2) the ideal tool for rigorous post-Keynesian analyses of the medium run, and (3) therefore crucial to the consolidation of the broad post-Keynesian research program.

    "Revisiting (and Connecting) Marglin-Bhaduri and Minsky--An SFC Look at Financialization and Profit-led Growth"

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    Many heterodox strands of thought share both a concern with the study of different phases or growth regimes in the history of capitalism and the use of formal short-run models as an analytical tool. This text suggests that (1) this strategy is potentially misleading; (2) that the stock-flow consistent (SFC) approach, while providing a general framework that may facilitate the dialogue among those currents, is particularly well suited to all those who think that macroeconomic models may illuminate historical quests; and (3) that the main intuitions may be conveyed through the "benchmark" Post Keynesian SFC model presented by Dos Santos and Zezza (2008), dispensing with the complex computer simulations that are normally employed by SFC authors.

    COMUNICAÇÃO ORGANIZACIONAL: ESTUDO DE CASO NO SETOR DE TI DA UFBA

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    A comunicação institucional na STI (Superintendência de Tecnologia da Informação da Universidade Federal da Bahia) é analisada nesse estudo de caso, em diálogo com os avanços das tecnologias digitais e as mudanças consequentes nas organizações. De modo particular, diante da transparência e compromissos sociais destacados nas instituições públicas, a comunicação ganha ares de obrigatoriedade e de estratégia de sobrevivência. A despeito da realidade que intensificou as relações multissetoriais e a interação com dezenas de milhares de usuários, a comunicação interna é destacada nesse artigo, cujo instrumento de pesquisa utiliza um questionário/entrevista aplicado aos funcionários do setor. Questões objetivas e discursivas favorecem as análises quantitativa e qualitativa. Estudos mais amplos respaldam a vinculação do tema com a realidade de uma sociedade em rede . Conclui-se que a comunicação é de fundamental importância para o setor de TI da UFBA, crença respaldada pela própria equipe da STI, fortalecida por ações de motivação e de canais de interação

    Limiting intellectual property : the competition interface

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    PhDThis is a study of legal limits of the exercise of intellectual property, with emphasis on chip designs. In Part One, the focus is on the economics of innovation dynamics and the nature of the social bargain underlying intellectual property. It analyses the function of intellectual property and the structure of protection of chip designs under the US chip law, the IPIC Treaty and the Agreement on TRIPS. It suggests that while protection of intellectual property is designed to promote technical innovation and enhance competition in the public favour, the innovation process is carried out in conditions of increasingly imperfect competition. On these grounds, a point is made to limit the exercise of proprietary rights in the welfare/efficiency perspective. Part Two addresses the treatment of legal limitations. An analysis is made concerning the evolution of the safeguarding provisions on which unauthorised use of copyright and patent in the British legal system relies. These safeguards, structured within the intellectual property law, have gradually been developed to also rely on a resurgent competition legislation, which has been considerably used by OECD countries to order the exercise of proprietary rights. The ability of modem competition law to induce an intellectual property order, and the features of the adjudicatory process of non-voluntary licences over UK patents are also examined. From the findings the emergence of; namely, a safeguarding policy is identified. The conceptualisation of this institutional policy, aiming at efficiency and welfare objectives related to the exercise of proprietary rights, is a central theme. It shows that safeguarding provisions intrinsic to intellectual property law is insufficient to pursue these objectives, and holds that to protect intellectual property without an effective control of anti-competitive practices is a distorting and unsustainable legal policy

    O Uso terapêutico de mediadores anti-inflamatórios da via do ácido araquidônico

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    Arachidonic acid (AA) a precursor in the formation of eicosanoids which are lipid mediators with a number of functions in human physiology and pathology. The most of the eicosanoids act as proinflammatory mediators and contribute to the development and proliferation of tumors. In this thesis we evaluated two mediators: 15-deoxy-Δ12,14-PGJ2 (15d- PGJ2) and epoxieicosatrienoic acids (EETs) both act with an opposite activity of most eicosanoids, with an anti-inflammatory and and anti-tumoral action these two distinct mediators from AA pathway were used in this thesis in two different projects. First: 15d- PGJ2, was described that to have an antiproliferative activity and to induce apoptosis in several types of tumor cells however, the effect of 15d- PGJ2 in thyroid cancer cells was unknown in this sense, we tested in vitro cultured thyroid tumor cells, here in TPC1 cells, and treated with different concentrations of 15d- PGJ2 (0 to 20 uM) the treated cells showed a decrease in proliferation and an increase in apoptosis and a decrease in IL-6 release and relative expression. These key results together demonstrate that 15d- PGJ2 can be used as a new therapy for thyroid cancer. Second: The EETs are converted to their diols by soluble epoxy hydrolase (sEH) to maintain the stability of EETs and their anti-inflammatory activity, an inhibitor (TPPU) against was used to sEH in a periodontitis model induced with Aggregatibacter actinomycetemcomitans. The oral treatment in mice with TPPU and sEH Knockout animals showed bone loss reduction accompanied by a decrease in the osteoclastogenic molecules, like RANK, RANKL and OPG, demonstrating that pharmacological inhibition of sEH may have therapeutic value in periodontitis and inflammatory diseases that involve bone resorption.Tese (Doutorado)O ácido araquidônico (AA) é precursor na formação dos eicosanoides, que são mediadores lipídicos com uma série de funções na fisiologia e patologia humana. A maioria dos eicosanoides atuam como mediadores pró-inflamatórios e contribuem para o desenvolvimento e proliferação de tumores. Nesta tese foram avaliados dois mediadores: a 15-deoxi-Δ12,14-PGJ2 (15d- PGJ2) e os ácidos Epoxieicosatrienoicos (EETs), ambos apresentam uma atividade oposta a da maioria dos eicosanoides, ou seja, com uma ação anti-inflamatória e antitumoral. Esses dois mediadores distintos da via do AA foram utilizados nesta tese em dois projetos distintos. Primeiro: A 15d- PGJ2 possui uma atividade antiproliferativa e induziu apoptose para diversos tipos de células tumorais, entretanto, o efeito da15d- PGJ2 em células de cancer da tireoide ainda estava desconhecido. Neste sentido, foram cultivadas in vitro células tumorais da tireoide, da linhagem TPC1, e tratadas com diferentes concentrações de 15d- PGJ2 (0 ate 20 μM), as células tratadas demonstraram uma diminuição na proliferação, e aumento na apoptose, e uma diminuição na liberação e expressão relativa de IL-6. Estes resultados em conjunto sugerem que a 15d- PGJ2 pode ser utilizada como uma nova terapia para o cancer da tireoide. Segundo: Os EETs são metabolizados em seus diois pela epóxi hidrolase solúvel (sEH), para manter a estabilidade dos EETs e a sua atividade antiiflamatoria, foi utilizado um inibidor (TPPU) para sEH em um modelo de periodontite induzida por Aggregatibacter actinomycetemcomitans. O tratamento oral com TPPU, assim como o uso de animais sEH Knockout, levou a uma redução na perda óssea acompanhada da diminuição de moléculas osteoclastogenicas como RANK, RANKL e OPG, demonstrando que a inibição farmacológica da sEH pode ter um valor terapêutico na periodontite e doenças inflamatórias que envolvem a reabsorção óssea

    Sistema de Coleta de Dados de Acidentes de Trânsito de Joinville

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    TCC(graduação) - Universidade Federal de Santa Catarina. Campus Joinville. Bacharelado Interdisciplinar em Mobilidade.O Mapa da Violência, publicado pelo Governo Federal, apresenta taxas de óbito por 100 mil habitantes, decorrentes de acidentes de trânsito, em Joinville, superiores à média nacional. Em 2013, a taxa foi de 22,85 para Joinville e a média nacional foi de 20,12. Assim, o trânsito de Joinville possui dados alarmantes, sendo um dos responsáveis pela alta taxa de óbitos no município. Para se analisar os acidentes ocorridos e atuar na prevenção de novos acidentes, são necessários dados que contemplem a localização e todas as variáveis envolvidas, que possam explicar esses eventos. Nota-se que, protocolos de coleta de dados, os quais necessitam ser preenchidos a mão durante as ocorrências, tendem a ser abandonados ou preenchido sem os cuidados necessários. Sendo assim, é necessária à coleta de informações de forma sistematizada, para gerar uma base de dados confiáveis. Assim, este trabalho objetiva implementar um protocolo de coleta de dados para o planejamento urbano de Joinville, atuando nas ações dos órgãos que fazem a coleta – tais como Corpo de Bombeiros, Hospitais, etc. – a fim de garantir a confiabilidade dos dados e de centralizar as informações sobre os acidentes de trânsito. Com dados provenientes das coletas, então, pode-se fazer análises de riscos de acidentes com maior completude, confiabilidade e operacionalização
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