Rio de Janeiro State University

About: Rio de Janeiro State University is a education organization based out in Rio de Janeiro, Brazil. It is known for research contribution in the topics: Population & Large Hadron Collider. The organization has 16631 authors who have published 30919 publications receiving 465753 citations. The organization is also known as: UERJ & Rio de Janeiro State University.

A politica de educacao profissional no Governo Lula: um percurso historico controvertido

Abstract: Este artigo analisa as politicas de educacao profissional do Governo Lula em seu percurso controvertido entre as lutas da sociedade, as propostas de governo e as acoes e omissoes no exercicio do poder. Partindo-se da revogacao do Decreto n. 2.208/97, principal regulamentacao da educacao profissional no governo anterior, cujo processo expressa a disputa por hegemonia nesse campo, analisa-se a contradicao da proposta de lei para a educacao profissional, ao inves de retomar o debate sobre a LDB. Posteriormente, analisam-se os programas Escola de Fabrica, Integracao da Educacao Profissional ao Ensino Medio na Modalidade de Educacao de Jovens e Adultos (PROEJA) e Inclusao de Jovens (PROJOVEM). Apesar das declaracoes favoraveis a integracao entre formacao basica e formacao especifica, a politica de educacao profissional processa-se mediante programas focais e contingentes numa travessia marcada por intensos conflitos e no terreno da contradicao.

Ecology of a small mammal community in an Atlantic forest area in southeastern Brazil

Abstract: During a 14 month mark‐and‐release project in an Atlantic forest area (Jureia Ecological Station), I studied the population ecology of 8 species of small mammals (3 marsupials and 5 rodents). In a 4,307 trap nights, 182 individuals were captured 650 times. The rodents were caught 73% of the total capture and the marsupials 27%. Oryzomys nitidus was the commonest species in the grid followed by Proechimys iheringi and Metachirus nudicaudatus. The marsupials showed a seasonal pattern of reproduction. As a consequence, the population densities had a peak during the wet months with the entrance of the youngs. The rodents, P. iheringi and O. nitidus bred throughout the year, although the former one had a peak in the dry months. Density of O. nitidus was fairly constant, whereas that of P. iheringi was higher during the recruitment time. Rodents and marsupials contributed with the same biomass in Jureia small mammal community.

Output-feedback model-reference sliding mode control of uncertain multivariable systems

Abstract: This note considers the robust output tracking problem using a model-reference sliding mode controller for linear multivariable systems of relative degree one. It is shown that the closed loop system is globally exponentially stable and the performance is insensitive to bounded input disturbances and parameter uncertainties. The strategy is based on output-feedback unit vector control to generate sliding mode. The only required a priori information about the plant high frequency gain matrix K/sub p/ is the knowledge of a matrix S/sub p/ such that -K/sub p/S/sub p/ is Hurwitz which relaxes the positive definiteness requirement usually needed by other methods.

Middle-class teenage sexuality and pregnancy in Rio de Janeiro, Brazil

Abstract: The subject of this paper is teenage pregnancy among middle-class youth, a topic not sufficiently studied in Brazil. The paper is based on a qualitative, socio-anthropological study of 14 middle-class families in Rio de Janeiro, Brazil, whose children have remained single, living with their parents after the child's birth. A total of 25 in-depth interviews were conducted with 6 young men and 7 young women, ages 18 to 24, and their parents (11 mothers, one father), to examine the event in retrospect and its impact on these young people and their families. Three aspects are analyzed: difficulties young people face in internalizing contraception as a norm; late discovery of pregnancy; and how the decision to either have an abortion or give birth is made by young people and their parents. This research allows seeing teenage pregnancy as an event that hinges on the process of constructing a young person's autonomy, in which sexuality plays a prominent role. Concluding, the phenomenon should be analyzed in a specific historical and cultural context, with changes over the decades in the rules underlying the process of individualization among young people.