18 research outputs found

    Caracterização da queixa escolar no Centro de Psicologia Aplicada da Universidade Federal de Juiz de Fora

    Get PDF
    A queixa escolar vem se constituindo, historicamente, como um dos motivos mais frequentes de encaminhamentos de crianças para os serviços-escola de Psicologia, traduzindo, pela sua complexidade, um desafio para a formação e práticas no âmbito da psicologia escolar/educacional. Diante da necessidade de aperfeiçoar o atendimento à clientela e o processo de triagem, o presente estudo objetivou analisar os prontuários referentes à queixa escolar de pacientes atendidos no Centro de Psicologia Aplicada da Universidade Federal de Juiz de Fora, Minas Gerais, Brasil, num total de 1.590 documentos, no período de 1996 a 2009. Os resultados quanto à clientela evidenciaram a prevalência de meninos na faixa entre 9 e 13 anos de idade, com predomínio de encaminhamentos oriundos de escolas de periférias da cidade. Quanto à queixa, constatou-se expressiva coocorrência de problemas comportamentais e de aprendizagem. Os dados permitem uma reflexão crítica acerca da queixa escolar e de alguns fatores contextuais, bem como a necessidade de aperfeiçoamento da ficha de triagem

    Analisi strutturale statica e dinamica della torre Ghirlandina

    No full text
    The studies regarding the restoration of the Tower took into consideration the seismic risk of the region as well as the historical record that shows that the building had already sustained earthquake damage over the past centuries; thus, a structural seismic analysis appeared necessary to complete the historical and material knowledge of the monument

    Seismic capacity of the Ghirlandina Tower in Modena, Italy

    No full text
    This paper presents a vulnerability assessment method taking into account the soil-structure interaction and masonry limit analysi

    Dynamic identification and seismic behaviour of the Ghirlandina tower in Modena (Italy)

    No full text
    This paper presents a simplified vulnerability assessment method for masonry towers taking into account the soil-structure interaction. The soil-structure interaction model is based on in situ investigations, defining a detailed soil profile and the relevant mechanical parameters, aimed at capturing the expected behaviour during seismic events. In particular an upper and lower soil stiffness, appropriate for low and high intensity seismic events have been considered, and a validation of upper values was also performed throughout an identification analysis, based on vibration records of the tower. Limit analysis method was then applied to identify the collapse mechanisms geometry, under the assumption that masonry is a no-tension material. This implies that at the limit of overturning, a part of the masonry will remain attached to the base and a stress-free diagonal surface of fracture will form

    Dynamic identification and seismic behaviour of the Ghirlandina tower in Modena (Italy)

    No full text
    This paper presents a simplified vulnerability assessment method for masonry towers taking into account the soil-structure interaction. The soil-structure interaction model is based on in situ investigations, defining a detailed soil profile and the relevant mechanical parameters, aimed at capturing the expected behaviour during seismic events. In particular an upper and lower soil stiffness, appropriate for low and high intensity seismic events have been considered, and a validation of upper values was also performed throughout an identification analysis, based on vibration records of the tower. Limit analysis method was then applied to identify the collapse mechanisms geometry, under the assumption that masonry is a no-tension material. This implies that at the limit of overturning, a part of the masonry will remain attached to the base and a stress-free diagonal surface of fracture will for

    Dynamic identification and seismic behaviour of the Ghirlandina tower in Modena (Italy)

    No full text
    This paper presents a simplified vulnerability assessment method for masonry towers taking into account the soil-structure interaction. The soil-structure interaction model is based on in situ investigations, defining a detailed soil profile and the relevant mechanical parameters, aimed at capturing the expected behaviour during seismic events. In particular an upper and lower soil stiffness, appropriate for low and high intensity seismic events have been considered, and a validation of upper values was also performed throughout an identification analysis, based on vibration records of the tower. Limit analysis method was then applied to identify the collapse mechanisms geometry, under the assumption that masonry is a no-tension material. This implies that at the limit of overturning, a part of the masonry will remain attached to the base and a stress-free diagonal surface of fracture will form

    Análise do "efeito tamanho" nos retornos das ações de empresas listadas na Bovespa

    No full text
    Neste estudo, o desempenho das ações negociadas na Bovespa foi analisado entre 17 de março de 1998 e 3 de agosto de 2004. Primeiramente, foram feitos testes de estacionariedade para se verificar se as ações seguiram o modelo de passeio aleatório. Verificou-se que todos os retornos foram estacionários. Em relação aos preços, 90% das ações tiveram preços com raiz unitária, ou seja, apresentaram passeio aleatório no nível. Constatou-se que as 10% restantes foram ilíquidas. Esses resultados sugerem que o mercado brasileiro é eficiente na forma fraca. Em seguida, a eficiência do mercado brasileiro em sua forma semiforte também foi verificada em relação ao tamanho da empresa, através da estimação de um CAPM condicional. A proxy tradicional para medir o tamanho da empresa é o valor de mercado, mas também foram utilizados o valor patrimonial e o lucro. Os resultados revelam que, independente da proxy utilizada, nenhum portfolio, baseado no tamanho, foi capaz de gerar retornos anormais sistemáticos. Por fim, observou-se que o tamanho está, significativamente, correlacionado com o beta apenas quando se utiliza o valor patrimonial como proxy, porém os coeficientes de correlação apurados foram baixos e apresentaram sinais inconsistentes. Esses resultados, em termos gerais, sugerem, então, que o mercado brasileiro, também, é eficiente na forma semiforte.This study analyzes the performance of stocks listed on Bovespa - the São Paulo Stock Exchange - between 03/17/1998 and 08/03/2004. First, stationarity was tested in order to check whether these stocks followed the random walk model. The results showed that all returns were stationary. In relation to prices, 90% of all stock prices revealed a unit root, that is, they followed the random walk model at level. The other 10% were rarely traded. These findings suggest that the Brazilian stock market is efficient in its weak form. Then, the efficiency of the Brazilian market in its semi-strong form was also tested in terms of the firm's size, by estimating a conditional CAPM. The traditional proxy used to measure a firm's size is the market value. However, other size proxies like book value and profit were also used. The results revealed that, independently of the proxy used, no size portfolio was capable of obtaining systematically abnormal returns. Finally, a significant correlation was found between beta and size only when book value is used as a size proxy. Nevertheless, its coefficients were low and their signals were inconsistent. In general terms, these results suggest that the Brazilian market is also efficient in its semi-strong form
    corecore