Meson decay in the Fock-Tani Formalism

The Fock-Tani formalism is a first principle method to obtain effective interactions from microscopic Hamiltonians. Usually this formalism was applied to scattering, here we introduced it to calculate partial decay widths for mesons.Comment: Presented at HADRON05 XI. "International Conference on Hadron Spectroscopy" Rio de Janeiro, Brazil, August 21 to 26, 200

Glueball-glueball scattering in a constituent gluon model

In this work we use a mapping technique to derive in the context of a constituent gluon model an effective Hamiltonian that involves explicit gluon degrees of freedom. We study glueballs with two gluons using the Fock-Tani formalism. In the present work we consider two possibilities for $0^{++}$: (i) as a pure $s\bar{s}$ and calculate, in the context of a quark interchange picture, the cross-section; (ii) as a glueball where a new calculation for this cross-section is made, in the context of the constituent gluon model, with gluon interchange.Comment: Proceedings of the International Workshop IX Hadron Physics and VII Relativistic Aspects of Nuclear Physics (HADRON-RANP 2004

The hermite scheme: an application to the n-body problem

In the past century, computational methods have been being applied more and more to physical systems, in special to systems which are chaotic in nature or don’t have an analytical solution, or both, such as is the case for systems that obey the N-body problem. To solve such systems, it is necessary to select the most suitable numerical method, one that takes into account both the necessary time and computational resources available to the researcher, and in order to be able to do so, one must have a good set of tools available. In this work we present a numerical method known as the Hermite Scheme, a fourth-order predictor-corrector integrator which makes use of an Individual Time Step structure, making it capable of processing multi-scale systems. We test its accuracy and study its applicability to the N-body problem, extending the result to chaotic systems in general. We then proceed to check its performance for a N-body system, and compare it to the performance of another fourth-order integrator, the Runge-Kutta. Lastly we verify its performance to multi-scale systems by reproducing some real-life results. Our results show that the Hermite Scheme has a good applicability to N-body systems, with an overall performance better than the fourth order Runge-Kutta. It also shows a good performance when applied to multi-scale systems, with no harm to its overall time performance, which can be applied to other multi-scale systems other than the N-body problem. With this verification, we intend to further apply this method to collision processes and apply the final result on the study of planet formation. The method also shows great potential applicability to Condensed Matter Physics, and we intend to test-apply to known systems in the future.No último século, métodos computacionais vem sendo aplicados mais e mais a problemas físicos, em especial àqueles que ou são caóticos ou não possuem solução analítica, ou ambos, como é o caso de sistemas que obedecem ao problema de N-corpos. Para resolver tais problemas, é necessário selecionar o método numérico mais adequado, um que leve em consideração ambos o tempo necessário e os recursos computacionais disponíveis ao pesquisador responsável; e para que ele seja capaz de fazê-lo, é necessário que ele tenha uma ampla gama de ferramentas disponíveis. Neste trabalho, mostraremos um método numérico conhecido como o Esquema de Hermite, um integrador de quarta ordem preditor- corretor que faz uso de uma estrutura de Passo de Tempo Individual, tornando-o capaz de processar sistemas em multiescalas. Nós testamos sua precisão e estudamos sua aplicação ao problema de N-corpos, estendendo o resultado a sistemas caóticos em geral. Em seguida, verificamos seu desempenho para um sistema de N-corpos e comparamos o resultado com o desempenho de outro integrador de quarta ordem, o Runge-Kutta. Por último nós reproduzimos resultados reais para verificamos seu desempenho em sistemas multiescala. Nossos resultados mostram que o Esquema de Hermite possui uma boa aplicabilidade para sistemas de N-corpos, com um desempenho ao todo melhor do que um Runge-Kutta de quarta ordem. Ele também apresenta um bom desempenho quando aplicado a sistemas multiescala, com nenhum prejuízo à sua performance temporal total, demonstrando que pode ser aplicado a sistemas multiescala que não somente o problema de N-corpos. Com estas verificações, pretendemos no futuro aplicar este método a sistemas com processos de colisão, e aplicar o resultado final no estudo de formação planetária. O método também apresenta grande potencial para aplicação em sistemas de Física da Matéria Condensada, nos quais pretendemos testar a aplicação do método em sistemas conhecidos no futuro.CAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superio

Knowledge base for teaching and sustainability: A study about curricular environmentalization on pedagogy course of State University of West Paraná

Este trabalho apresenta os resultados da análise documental do curso de Pedagogia da Universidade Estadual do Oeste (Unioeste), campus de Cascavel, Paraná, Brasil. O objetivo desse artigo é expor como está o processo de ambientalização curricular deste curso a partir da análise dos ementários das disciplinas, utilizando como parâmetros os indicadores da Rede de Ambientalização Curricular do Ensino Superior (ACES), as Diretrizes Curriculares Nacionais para a Educação Ambiental (DCNEA) e a Política Nacional de Educação Ambiental (PNEA), como base para a apreensão de conteúdos de sustentabilidade. A análise documental realizou-se por meio de técnicas do método Análise de Conteúdo de Bardin (2011) cujos resultados indicaram que a inserção de conteúdos de sustentabilidade nas ementas das disciplinas, do curso de Pedagogia, apresentam princípios mínimos da Rede ACES e DCNEA, evidenciando uma Educação Ambiental frágil e incipiente na formação dos pedagogos. Os dados possibilitaram verificar a premente necessidade de alteração nos currículos para a formação destes profissionais para que se configure um percurso formativo em sintonia com as necessidades de educação de novas gerações comprometidas com um desenvolvimento sustentável no BrasilThis work presents the results of the document analysis of the Pedagogy course of State University of West, campus of Cascavel, Paraná, Brazil. The purpose of this article is to show how is the curriculum environmentalization process of this course through the analysis of the disciplines curriculum, using as parameters the Curriculum Environmentalization of Higher Education (ACES) Network indicators, the National Curriculum Guidelines for Environmental Education (DCNEA) and the National Environmental Education Policy (PNEA) as a basis for the seizure of sustainability content. The document analysis was performed through the techniques of the Bardin (2011) Content Analysis method in which the results indicated that the insertion of sustainability content on the curriculum of disciplines, from Pedagogy course, presents minimum principles of ACES Network and DCNEA, showing a fragile and incipient Environmental Education in teacher training. The data enabled to verify the pressing need to change the curricula for these professionals training to set up a formative path in line with education needs of the new generations committed to the sustainable development in Brazi

Ethnography of individuals in psychological distress

OBJETIVO: Analisar como pessoas com doenças mentais vivenciam suas necessidades especiais e interagem com a comunidade local nos espaços públicos urbanos. METODOLOGIA: Pesquisa realizada na cidade de Passo Fundo, Rio Grande do Sul, utilizando como abordagem teórico-metodológica a etnografia. A partir de estudo de um sujeito, buscou-se compreender o que caracteriza as pessoas como doentes mentais e como as adversidades decorrentes de seus quadros mentais não as impossibilitam de construir circuitos, trajetos e redes sociais no espaço urbano. RESULTADOS E CONCLUSÕES: O estudo identificou os processos de subjetivação dos sujeitos no espaço da cidade. Uma vez que os serviços de saúde reconhecem esses sujeitos, podem criar formas de intervenção mais adequadas às suas necessidades especiais.OBJECTIVE: To asses how people with mental disorders experience their special needs and interact with the community in public urban places. METHODOLOGY: The research was performed in the city of Passo Fundo, Rio Grande do Sul, Brazil, using ethnography as the theoretical methodological approach. As of the study of one subject, the objective was to understand what characterizes people as mentally sick and how the adversities of their mental picture do not prevent them from building circuits, paths, and social networks with the urban space. RESULTS AND CONCLUSIONS: It was identified the subjectivity processes of subjects in the spaces of the city. Since health services recognized these individuals, it is possible to create interventions which are more suitable to their special needs

Implementing machine learning for data breach detection

Privata. ai is a User and Entity Behavior Analytics (UEBA) application used for the detection of data breaches in an organization. By tracking down the usual access to personal and sensitive data, it becomes much easier to detect an outlier. These anomalies could result in a real threat to the company’s data security and must, therefore, be promptly detected and addressed. This paper focuses on the managerial challenges that arise from the increasing threat of data breaches and how machine learning could help in protecting organizations from them. For this purpose, large part of the challenge came from understanding the unique specificities of these attacks and finding an appropriate machine learning method to detect them. Given the fact that the data used to train the models was randomly generated, the results should be taken with caution. Nevertheless, the models used for this paper should be taken as a basis for the future development of the software

A market timing rotational strategy based on the dual moving average crossover - a study on gold and the market

It is well-known in the financial world that investors often turn to gold as a “safe haven” during times of adverse market conditions. This study explores a rotational strategy that involves switching between gold and the market in an attempt to try to time the latter and minimize losses during these periods. Findings suggest that the effectiveness of this strategy largely varies depending on the specific macroeconomic conjuncture, showing promising results during the Covid-19 Crisis of 2020, but less so during the Great Financial Crisis of 2007-09