An Empirical Evaluation of an Evolutionary Game Theory Model of the Labor Market

In this paper we intend to perform an empirical evaluation of the evolutionary game theory model of the labor market developed by Araujo and Souza (2010). In order to accomplish this task we focus on the Brazilian labor market by using data from the National Household Sampling Survey – PNAD/IBGE, from 1995 to 2008. We used four different methodologies: the OLS, Pseudo-panel with fixed effects, Instrumental Variables and the Heckman Selection Model. Results indicate that the main difference between the 1995-2002 and 2003-2008 period is the impact of education over wages. According to these findings, investments in education were more profitable for the 2003-2008 period. However, all wage gaps between formal and informal markets reduced considerably.formal and informal and labor market, evolutionary game theory.

Comparisons Between Field and Analytical Behavior of an Experimental Excavation

This paper analyses the behaviour of an experimental unsupported excavation taken to failure in a soft clay deposit near Rio de Janeiro, Brazil. The excavation was originally analyzed by Pontes Filho and Medeiros (1982) assuming undrained conditions. In this paper, the same excavation is analyzed by Biot\u27s coupled theory of consolidation and deformation using linear elastic, non-linear-elastic and elasto-plastic constitutive models and simulating the excavation process in time, without a – priori hypothesis on the drainage conditions. Details of the excavation construction, geotechnical profile and instrumentation are briefly described. Subsequently, the constitutive model calibrations are discussed in view of laboratory tests available. Finally, for each excavation step, comparisons are made between surface settlement profiles, horizontal displacements and pore-pressure measured in the field and analytically calculated

Field Observation and Finite Element Analysis of a Subway Excavation

This paper analyzes a braced excavation executed during the construction of Rio de Janeiro City subway along a street (Catete Street) in which several old and historical buildings existed and should be preserved. The excavation had an average depth of 13 meters and was executed almost ten years ago in a subsoil in which the principal problems were caused by a 6 meters thick loose sand layer, underlaid by a 4 meter thick silty organic clay layer. Several buildings were damaged and had to be repaired. The objective of this paper is to show that even using the incomplete laboratory and field testing data available at the time the design was made, some of this damage could be predicted and, therefore, possibly prevented. The paper firstly describes the excavation and the available information on the subsoil materials. Subsequently, a finite element analysis is made and the results are correlated to observed damage

Acidentes de Trabalho na Universidade de Brasília: Causas e Conseqüências

Este estudo teve como objetivo identificar as causas e conseqüências dos acidentes de trabalho no âmbito da Universidade de Brasília. Procurou também entender os motivos que levaram os servidores a se acidentarem e ao final contribuir com sugestões adequadas de melhorias nos processos de trabalho nos quais os funcionários da Universidade de Brasília estão inseridos. A pesquisa documental foi realizada junto ao Hospital Universitário de Brasília HUB e no Núcleo Especializado em Segurança do Trabalho NEST, através das CIAT s Comunicações Internas de Acidentes de Trabalho. Foram analisadas 223 CIAT s, referentes aos anos de 2003, 2004 e 2005, representando 100% da amostra, ou seja, foram verificados todos os acidentes ocorridos no período de estudo. O levantamento dos dados revelou que dos 223 acidentes, 181 foram verificados no Hospital Universitário de Brasília - HUB, representando 82%. O tipo de acidente de maior ocorrência foi ocasionado por perfuração com manejo de agulhas. O período de estudo constatou a ocorrência de 127 lesões desta natureza, representando 71%. O estudo revelou ainda que os acidentes aconteceram em sua maioria com profissionais de saúde, como Médicos, Enfermeiros, Auxiliares de Enfermagem, Técnicos de Laboratório, Alunos de Odontologia, Internos e servidores da área operacional que procedem a retirada do lixo hospitalar

Annealed Ising model on hierarchical structures: a transfer matrix approach.

Spin systems in the presence of disorder are described by two sets of degrees of freedom, associated with orientational (spin) and disorder variables, which may be characterized by two distinct relaxation times. Disordered spin models have been mostly investigated in the quenched regime, which is the usual situation in solid state physics, and in which the relaxation time of the disorder variables is much larger than the typical measurement times. In this quenched regime, disorder variables are fixed, and only the orientational variables are duly thermalized. Recent studies in the context of lattice statistical models for the phase diagrams of nematic liquid-crystalline systems have stimulated the interest of going beyond the quenched regime. The phase diagrams predicted by these calculations for a simple Maier-Saupe model turn out to be qualitative different from the quenched case if the two sets of degrees of freedom are allowed to reach thermal equilibrium during the experimental time, which is known as the fully annealed regime. In this work, we develop a transfer matrix formalism to investigate annealed disordered Ising models on two hierarchical structures, the diamond hierarchical lattice (DHL) and the Apollonian network (AN). The calculations follow the same steps used for the analysis of simple uniform systems, which amounts to deriving proper recurrence maps for the thermodynamic and magnetic variables in terms of the generations of the construction of the hierarchical structures. In this context, we may consider different kinds of disorder, and different types of ferromagnetic and anti-ferromagnetic interactions. In the present work, we analyze the effects of dilution, which are produced by the removal of some magnetic ions. The system is treated in a “grand canonical" ensemble. The introduction of two extra fields, related to the concentration of two different types of particles, leads to higher-rank transfer matrices as compared with the formalism for the usual uniform models. Preliminary calculations on a DHL indicate that there is a phase transition for a wide range of dilution concentrations. Ising spin systems on the AN are known to be ferromagnetically ordered at all temperatures; in the presence of dilution, however, there are indications of a disordered (paramagnetic) phase at low concentrations of magnetic ions

A SOCIOLOGIA WEBERIANA: ASPECTOS HISTÓRICOS TEÓRICOS E METODOLÓGICOS

This paper pretend to show an overview of the weberian sociology. It Beginsfocusing in the historic and geographic environment where the Max Weber sociology wasoriginated. Analyzes the major intellectual influences in his work. And concludes analyzingthe main epistemological and methodological characteristics of his sociology.Este texto foi pretende apresentar uma visão geral da sociologia weberiana. Iniciaabordando o contexto histórico geográfico onde a sociologia de Max Weber se originou.Analisa as principais influências intelectuais que produziram e estão presentes em sua obra,e conclui tratando das principais características epistemológicas e metodológicas de uma dasprincipais vertentes teóricas da sociologi

Investigação sobre concepções acerca de gravidez e parto em unidades de saúde do município de Barra do Piraí

Este trabalho tem por objetivo levantar dados que possam informar e orientar famílias e principalmente nossos jovens sobre o tema gravidez. Nele, será articulado sobre gravidez, tipos de partos, destacando consequências boas ou ruins que cada um pode desencadear, de acordo com a literatura comprovada por especialistas. A gestação é um momento muito especial na vida da mulher, com reflexos em toda a sua família, onde, às vezes, a sensação de tornar-se mãe vem junto com incertezas, medos e inseguranças. Além de literatura e dados que discorrem do assunto, em termos globais que abrangem nosso país, foram levantados dados que mostram a atual situação, envolvendo a gravidez, no município de Barra do Piraí, situado no estado do Rio de Janeiro. Com base nessas informações, foi elaborado um questionário, destacado no anexo 1, destinado às mulheres grávidas. Nele, foram entrevistadas 32 mulheres no espaço Saúde da Mulher, Hospital e Maternidade Maria de Nazaré e em algumas residências. Todos os dados levantados estão demonstrados por meio de gráficos, onde se destacam bibliografia com comentários sobre os tópicos