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Search Results: 1 - 10 of 33085 matches for " Marcelo Cordeiro Pereira "
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Mean field J C estimation for levitation device simulations in the bean model using permanent magnets and YBCO superconducting blocks
Neves, Marcelo Azevedo;Costa, Giancarlo Cordeiro da;Pereira, Agnaldo Souza;Andrade Jr., Rubens de;Nicolsky, Roberto;
Brazilian Journal of Physics , 2002, DOI: 10.1590/S0103-97332002000400015
Abstract: this work presents a mean field estimation of jc as a bulk characteristic of ybco blocks. that average jc allows a good fitting of the finite-element-method (fem) simulation of the levitation forces to experimental results. that agreement is quite enough for levitation requirements of device projects, at short gaps and zero field cooling process, within the bean model. the physical characterization for that estimation was made measuring the interaction force between the pm and one ybco block in 1-d and mapping the trapped magnetic field in those blocks in 2-d.
óleos vegetais em ra es para o híbrido tambacu (macho "Piaractus mesopotamicus" x fêmea "Colossoma macropomum") Vegetable oils in diets for hybrid tambacu (male “Piaractus mesopotamicus” x female “Colossoma macropomum”)
Marcelo Cordeiro Pereira,Rafael Vieira de Azevedo,Luís Gustavo Tavares Braga
Revista Brasileira de Saúde e Produ??o Animal , 2011,
Abstract: Objetivou-se avaliar a inclus o de óleos vegetais em ra es para tambacu. Foram utilizados 315 exemplares (1,93 ± 0,16g), distribuídos em 21 happas de dimens es 0,60 x 0,30 x 0,60m. O delineamento foi o inteiramente casualizado, em esquema fatorial 2 x 4, duas fontes de óleos (soja e dendê), quatro níveis de inclus o (0; 3; 5 e 7%) e três repeti es, com 15 peixes por parcela experimental. As fontes de óleo foram adicionadas a uma ra o comercial extrusada contendo 36% de proteína bruta, 4505Kcal/Kg de energia bruta e 7% de extrato etéreo. O arra oamento foi realizado à vontade, quatro vezes ao dia durante 60 dias. Para peso final, ganho de peso diário, taxa de crescimento específico e sobrevivência, n o foram observadas diferen as significativas para os peixes que receberam ra es com óleo de dendê ou de soja, independente dos níveis. Níveis de inclus o de óleo influenciaram, com comportamento linear, as variáveis: consumo diário de ra o e proteína e convers o alimentar aparente dos tambacus. Para matéria seca, proteína bruta e matéria mineral na carca a, n o foram observadas diferen as significativas para os peixes que receberam ra es com óleo de dendê ou de soja, independentemente dos níveis. Observou-se resultado significativo para nível de inclus o dos óleos sobre as variáveis gordura e taxa de deposi o protéica na carca a, com comportamento linear crescente. A inclus o dos óleos de soja e dendê n o melhora o desempenho de juvenis de tambacu, no entanto ocorre aumento na eficiência de utiliza o protéica. The objective of this work was to evaluate the inclusion of vegetable oils in diets for tambacu. 315 specimens (1.93 ± 0.16g) were used in 21 happas with dimensions of 0.60 x 0.30 x 0.60m. The design was completely randomized in a factorial 2 x 4, two sources of oils (soybean and palm oil), four levels (0; 3; 5 and 7%) and three replicates with 15 fish per experimental plot. The oil sources were added to a commercial extruded feed containing 36% crude protein, 4505Kcal/Kg crude energy and 7% ether extract. The feeding was carried out ad libitum, four times daily for 60 days. For final weight, daily weight gain, specific growth and survival, rate, no significant differences were observed for fish fed diets with palm oil or soybean, regardless of the levels. The oil inclusion levels influenced with linear increasing, the daily feed intake and feed conversion and protein variables of the tambacus. There were no significant differences for fish fed diets with palm oil or soybean, regardless of the levels, for dry matter, crude protein and ash in th
REMUNERA O ACION RIA, SENTIMENTO DE PROPRIEDADE E MOTIVA O DOS EMPREGADOS
Christiane Klein??bing Godoi,Rosilene Marcon,Cristina Pereira Vecchio Balsini,Marcelo Cordeiro Teixeira
Revista de Administra??o FACES Journal , 2008,
Abstract: Com base nas teorias motivacionais, esta pesquisa objetivou inicialmente analisar se os atuais sistemas de remunera § £o acion ria continuam seguindo a l 3gica do controle comportamental extr -nseco, formulado por Herzberg (1987), ou se apresentam novas caracter -sticas ligadas motiva § £o intr -nseca. O estudo foi realizado em uma empresa brasileira do setor el trico, que desenvolve, h quatro anos, um programa at -pico de remunera § £o acion ria. Estruturou-se primeiramente uma etapa explorat 3rio-qualitativa que refutou a possibilidade de considerar, como motivacionais, os fatores gerados pelo Programa. No entanto, a etapa qualitativa fez surgir a hip 3tese de que o Programa seria capaz de produzir um sentimento de propriedade nos participantes. Retornando-se teoria, construiu-se um modelo te 3rico visando explicar a forma § £o do sentimento de propriedade atrav s de cinco fatores: Comunica § £o do Programa, Informa § μes Compartilhadas da Empresa, Participa § £o no Processo Decis 3rio, Obten § £o de Ganhos Financeiros significativos e regulares e Tratamento dos Empregados como Propriet rios. A an lise estat -stica descritiva associada triangula § £o com os resultados qualitativos refutou tamb m a hip 3tese de forma § £o do sentimento de propriedade, a partir do Programa.
REMUNERA O ACIONáRIA, SENTIMENTO DE PROPRIEDADE E MOTIVA O DOS EMPREGADOS
Christiane Kleinübing Godoi,Rosilene Marcon,Cristina Pereira Vecchio Balsini,Marcelo Cordeiro Teixeira
Revista de Administra??o FACES Journal , 2008,
Abstract: Com base nas teorias motivacionais, esta pesquisa objetivou inicialmente analisar se os atuais sistemas de remunera o acionária continuam seguindo a lógica do controle comportamental extrínseco, formulado por Herzberg (1987), ou se apresentam novas características ligadas à motiva o intrínseca. O estudo foi realizado em uma empresa brasileira do setor elétrico, que desenvolve, há quatro anos, um programa atípico de remunera o acionária. Estruturou-se primeiramente uma etapa exploratório-qualitativa que refutou a possibilidade de considerar, como motivacionais, os fatores gerados pelo Programa. No entanto, a etapa qualitativa fez surgir a hipótese de que o Programa seria capaz de produzir um sentimento de propriedade nos participantes. Retornando-se à teoria, construiu-se um modelo teórico visando explicar a forma o do sentimento de propriedade através de cinco fatores: Comunica o do Programa, Informa es Compartilhadas da Empresa, Participa o no Processo Decisório, Obten o de Ganhos Financeiros significativos e regulares e Tratamento dos Empregados como Proprietários. A análise estatística descritiva associada à triangula o com os resultados qualitativos refutou também a hipótese de forma o do sentimento de propriedade, a partir do Programa.
Mean field JC estimation for levitation device simulations in the bean model using permanent magnets and YBCO superconducting blocks
Neves Marcelo Azevedo,Costa Giancarlo Cordeiro da,Pereira Agnaldo Souza,Andrade Jr. Rubens de
Brazilian Journal of Physics , 2002,
Abstract: This work presents a mean field estimation of JC as a bulk characteristic of YBCO blocks. That average JC allows a good fitting of the finite-element-method (FEM) simulation of the levitation forces to experimental results. That agreement is quite enough for levitation requirements of device projects, at short gaps and zero field cooling process, within the Bean model. The physical characterization for that estimation was made measuring the interaction force between the PM and one YBCO block in 1-D and mapping the trapped magnetic field in those blocks in 2-D.
FONTES E NíVEIS DE VITAMINA C PARA O CAMAR O Litopenaeus vannamei NA FASE DE RECRIA
Neyva Ribeiro Ferraz,Rafael Vieira Azevedo,Wanessa Queiroz Camboim,Marcelo Cordeiro Pereira
Ciência Animal Brasileira , 2012,
Abstract: The inclusion of different sources and levels of vitamin C was evaluated on growth, survival, protein retention and health of Litopenaeus vannamei with initial weight of 5.90 ± 0.57 g. Five hundred and forty individuals were distributed in 27 cages in a completely randomized design in a 4x2 factorial scheme (four sources and two levels) (n = 3). The sources used were ascorbic acid crystal, coated ascorbic acid, ascorbic acid monophosphate and ascorbic acid PEG (polyethylene glycol) with two levels: 180 and 260 mg kg-1. No influence was observed (P>0.05) from the source, level of vitamin C nor interaction of these factors on growth, survival, retention of protein and parameters of health of the shrimp. Necrosis was observed in the abdomen of all animals. The use of vitamin C in sources and levels estimated for the shrimp Litopenaeus vannamei weighing over 5 g shows no improvement in growth, survival, protein retention and health of shrimp.
FEEDING INDEX AND REPRODUCTIVE CYCLE IN MALE RED-PIAU Leporinus copelandii (STEINDACHNER, 1875) IN THE LOW BASIN OF PARAIBA DO SUL RIVER íNDICES DE ALIMENTA O E CICLO REPRODUTIVO EM MACHOS DE PIAU-VERMELHO Leporinus copelandii (STEINDACHNER, 1875) NA BACIA DO BAIXO RIO PARAíBA DO SUL
Marcelo Cordeiro Pereira,Dalcio Ricardo de Andrade,Ana Paula Ribeiro Costa,Manuel Vazquez Vidal Jr.
Ciência Animal Brasileira , 2007,
Abstract: The aim of this article was evaluate de relationship among feeding index and reproductive cycle in male red-piau (Leporinus copelandii), in the low basin of paraiba do sul river. Fishes were collected monthly, from February 1998 to march 1999, and obtained the following param-eters: total condition factor (k1) and somatic (k2), stomach repletion index (SRI) and stomach repletion stage (SRS), and gonadal maturation. in general, condition and gonadal parameters showed an inverse relation with nutritional parameters. during the spawning season (september to January), was observed low values of SRS and SRI, fol-lowing an increase of these parameters after spawning, and it seems to be a natural mechanism of corporal condition recovering. Key-Words: Leporinus, fish, reproduction, reproductive biology. Objetivou-se com este trabalho avaliar a rela o entre índices de alimenta o e ciclo reprodutivo de machos de piau-vermelho, na regi o do baixo rio Paraíba do Sul (latitude 21° 41’ 15” S e longitude 42° 03’ 45” W). amostras foram coletadas mensalmente, entre fevereiro de 1998 a janeiro de 1999, sendo obtidos os seguintes parametros: fator de condi o total (k1) e somático (k2), índice gastro-somático (IGas) e estádio de reple o estomacal (ERE), e estádios de matura o gonadal. em geral, parametros de condi o corporal e g nadas apresentaram uma rela o inversamente proporcional aos parametros de alimenta o. durante a esta o reprodutiva (setembro–janeiro), foram observados os menores valores de IGas e ERE, seguidos por um incremento desses parametros após a reprodu o, mostrando ser um mecanismo natural de reposi o da condi o corporal. Palavras-chaves: biologia reprodutiva, Leporinus, peixe, reprodu o.
The compound class of extended Weibull power series distributions
Rodrigo B. Silva,Marcelo B. Pereira,Cícero R. B. Dias,Gauss M. Cordeiro
Statistics , 2012,
Abstract: In this paper, we introduce a new class of distributions which is obtained by compounding the extended Weibull and power series distributions. The compounding procedure follows the same set-up carried out by Adamidis and Loukas (1998) and defines at least new 68 sub-models. This class includes some well-known mixing distributions, such as the Weibull power series (Morais and Barreto-Souza, 2010) and exponential power series (Chahkandi and Ganjali, 2009) distributions. Some mathematical properties of the new class are studied including moments and generating function. We provide the density function of the order statistics and obtain their moments. The method of maximum likelihood is used for estimating the model parameters and an EM algorithm is proposed for computing the estimates. Special distributions are investigated in some detail. An application to a real data set is given to show the flexibility and potentiality of the new class of distributions.
The Kumaraswamy Pareto distribution
Marcelo B. Pereira,Rodrigo B. Silva,Luz M. Zea,Gauss M. Cordeiro
Statistics , 2012,
Abstract: The modeling and analysis of lifetimes is an important aspect of statistical work in a wide variety of scientific and technological fields. For the first time, the called Kumaraswamy Pareto distribution is introduced and studied. The new distribution can have a decreasing and upside-down bathtub failure rate function depending on the values of its parameters. It includes as special sub-models the Pareto and exponentiated Pareto (Gupta et al. [12]) distributions. Some structural properties of the proposed distribution are studied including explicit expressions for the moments and generating function. We provide the density function of the order statistics and obtain their moments. The method of maximum likelihood is used for estimating the model parameters and the observed information matrix is derived. A real data set is used to compare the new model with widely known distributions.
Análise radiográfica dos fatores prognósticos no tratamento do quadril displásico inveterado
Cordeiro, Eduardo Ferreira;Matsunaga, Fabio Teruo;Costa, Miguel Pereira;Felizola, Marcelo;Dobashi, Eiffel Tsuyoshi;Ishida, Akira;Milani, Carlo;
Acta Ortopédica Brasileira , 2010, DOI: 10.1590/S1413-78522010000400009
Abstract: objective: to evaluate the results of surgical treatment of developmental dysplasia of the hip (ddh) treated in the walking age. methods: we evaluated 33 hips in 30 patients operated between november of 1992 and september of 1997. the mean age was 4 years and 5 months at surgical period and the mean age at the last evaluation was 11 years and 7 months. the mean follow up time was 10 years and 2 months. we performed femoral shortening, open reduction and pelvic osteotomy (salter or chiari). radiographic assessment considered: acetabular index; acetabular angle; shenton's line; hilgenreiner's line; the c/b, c/h, acetabulum-center and acetabulum-head ratios; the width of the triradiate cartilage; the trochanter and femoral head relationship; femoral head sphericity; wiberg angle; avascular necrosis and leg length discrepancy. these parameters were measured and compared in pre-operative, early and late post-operative period. results: after statistical analysis we observed a significant decrease in these parameters from pre-operative period to immediate post-operative period (p=0.0001) and those have not changed between the immediate post-operative period and late post-operative period (p=0.5958). conclusion: by the classification used we observed 23 (69.70%) good, 5 (15.15%) regular and 5 (15.15%) bad results. none of these radiographic parameters were relevant to predicting final results.
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