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Search Results: 1 - 10 of 76608 matches for " Reginaldo Adriano da Silva "
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Deisy Cristina Corrêa Igarashi,Cristiane Ribeiro de Oliveira,Reginaldo Adriano da Silva,Wagner Igarashi
Gest?o & Regionalidade , 2010,
Abstract: O objetivo deste estudo foi observar se as técnicas de análise vertical e horizontal apoiam a evidencia o das informa es divulgadas no balan o social, e também se estas est o quantificadas e alinhadas às informa es qualitativas apresentadas no relatório de sustentabilidade. Este trabalho exploratório fez uso de abordagem quantitativa e qualitativa, e se limitou a analisar os relatórios de uma única empresa. Tal análise foi realizada a partir de pesquisa documental, fundamentada na leitura do conteúdo dos relatóriospublicados pela referida empresa. Para tabular as informa es, foram utilizadas planilhas eletr nicas. Como resultado, observou-se que n o foi evidenciado alinhamento entre os dois relatórios. No balan o social, o foco de aplica o de recursos foi o agrupamento “indicadores sociais internos”. No relatório desustentabilidade em 2004 e 2005, n o ficou evidenciado o objetivo da organiza o em termos de aplica o de recursos. Em 2006, tal prática foi enfatizada, mas o relatório de sustentabilidade enfocou o agrupamento “meio ambiente”, sendo que esta afirma o n o é observada em termos de montante de investimento no balan o social.
Prediction of Hevea progeny performance in the presence of genotype-environment interaction
Gon?alves, Paulo de Souza;Moraes, Mário Luiz Teixeira de;Silva, Marcelo de Almeida;Gouvêa, Lígia Regina Lima;Aguiar, Adriano Tosoni da Eira;Costa, Reginaldo Brito da;
Brazilian Archives of Biology and Technology , 2009, DOI: 10.1590/S1516-89132009000100004
Abstract: twenty two open-pollinated hevea progenies from different parental clones of the asian origin were tested at five sites in the northwestern s?o paulo state brazil to investigate the progeny girth growth, rubber yield, bark thickness and plant height. except for the rubber yield, the analysis of variance indicated highly significant (p<0.01) genotype x environment interaction and heterogeneity of regressions among the progenies. however, the regression stability analysis identified only a few interacting progenies which had regression coefficients significantly different from the expected value of one. the linear regressions of the progeny mean performance at each test on an environmental index (mean of all the progenies in each test) showed the general stability and adaptability of most selected hevea progenies over the test environments. the few progenies which were responsive and high yielding on different test sites could be used to maximize the rubber cultivars productivity and to obtain the best use of the genetically improved stock under different environmental conditions.
Controllability of linear systems on solvable Lie groups
Adriano Da Silva
Mathematics , 2014,
Abstract: Linear systems on Lie groups are a natural generalization of linear system on Euclidian spaces. For such systems, this paper studies controllability by taking in consideration the eigenvalues of an associated derivation D. When the state space is a solvable connected Lie group, controllability of the systems is guaranteed if the reachable set of the neutral element is open and the derivation D has only pure imaginary eigenvalues. For bounded systems on nilpotent Lie groups such conditions are also necessary.
Control sets of restricted linear systems on Lie groups
Adriano Da Silva
Mathematics , 2014,
Abstract: Linear systems on Lie groups are a natural generalization of linear system on Euclidian spaces. For such systems, this paper studies the maximal sets of approximate controllability. It is shown that, as for the Euclidean case, there is just one such set with nonempty interior.
Affine systems on Lie groups and outer invariance entropy
Adriano Da Silva
Mathematics , 2015,
Abstract: Affine systems on Lie groups are a generalization of linear systems. For such systems, this paper studies what happens with the outer invariance entropy introduced by Colonius and Kawan. It is shown that, as for linear case, the outer invariance entropy of affine systems is given by the sum of the positive real parts of the eigenvalues of a derivation D* that is associated to the drift of the system.
Natural Regeneration in Tropical Secondary Forest in Southern Amazonia, Brazil  [PDF]
Alexandre Ebert, Leandro Ribeiro Teixeira, Adriana Zanirato Contini da Silva, Reginaldo Brito da Costa
Open Journal of Forestry (OJF) , 2014, DOI: 10.4236/ojf.2014.42021

The study aimed to establish floral composition, diversity levels, category size, phytosociological structure, commercial use and ecological group of species present in the regeneration of open ombrophile forest in southern Amazon, Brazil. Data were collected at S?o Nicolau farm, in the municipality of Cotrigua?u, northwest of Mato Grosso state, coordinates 51°9'19.5\"S and 58°14'53\"W. One hundred plots of 10 × 10 m were allocated. All individuals between 29.9 and 59.9 cm had circumference at breast height (CAP) measure, with sub-plots of 5 × 5 m which were measured in all subjects between 1:50 m in height 29.9 cm CAP and sub-plots of 2 × 2 m for individuals between 0.30 to 1.5 m tall. The information obtained in the field were processed in excel spreadsheet. The results showed the occurrence of 610 individuals belonging to 82 species, 34 plant families, with a diversity index of Shannon & Weavers 2.77. The index of value of importance showed species Protium robustum,

Fome zero? O discurso da charge jornalística sobre a fome
Adriano Charles da Silva Cruz
Ciberlegenda , 2010,
Abstract: Resumo: O conhecimento histórico nos ajuda a refletir com maior seguran a os fen menos contemporaneos, entre eles, o midiático. Nessa perspectiva, apoiados na escola francesa da análise do discurso (AD), procuramos investigar como as charges do Diario de Pernambucorepresentam à fome. Inicialmente, identificamos na História brasileira à origem do problema. Pressupomos que a fome é um tema cíclico, n o aparecendo de forma freqüente na mídia. Acreditamos que as charges polemizam com as promessas eleitorais do presidente Luíz InácioLula da Silva, em 2002, notadamente, o Projeto Fome Zero e se colocam discursivamente como porta-voz dos famintos
Invariance Entropy of Hyperbolic Control Sets
Adriano Da Silva,Christoph Kawan
Mathematics , 2014,
Abstract: In this paper, we improve the known estimates for the invariance entropy of a nonlinear control system. For sets of complete approximate controllability we derive an upper bound in terms of Lyapunov exponents and for uniformly hyperbolic sets we obtain a similar lower bound. Both estimates can be applied to hyperbolic chain control sets, and we prove that under mild assumptions they can be merged into a formula.
Hyperbolic Chain Control Sets on Flag Manifolds
Adriano Da Silva,Christoph Kawan
Mathematics , 2014,
Abstract: In this paper we study the chain control sets of right-invariant control systems on the flag manifolds of a non-compact semisimple Lie group. We prove that each chain control set is partially (skew-) hyperbolic over the associated control flow. Moreover, we characterize those chain control sets that are uniformly (skew-) hyperbolic in terms of the flag type of the control flow.
Lutzomyia longipalpis Breeding—A Probable Breeding Substrate for Lutzomyia longipalpis in Nature  [PDF]
Jo?o Carlos Araujo Carreira, Reginaldo Pe?anha Brazil, Bianca dos Santos Carvalho, Alba Valéria Machado da Silva
Open Journal of Animal Sciences (OJAS) , 2018, DOI: 10.4236/ojas.2018.84028

The identifying of the preferred breeding sites of sand fly immature forms is quite important to the understanding of the vector’s biology and the development of more effective control strategies for leishmaniasis. In the present study, it was analyzed experimentally; the potential of dog feces of serving as breeding substrate to Lutzomyia longipalpis. Two situations were tested: 1) the life cycle of the insects from larvae to adults, 2) the whole cycle from adults to adults. Our results demonstrated for the first time that: 1) L. longipalpis can be easily bred in dog feces, suggesting that it could represent a potential raising substrate to immature forms for this species; 2) L. longipalpis larvae are able to make galleries on a substrate, literally burying themselves in this to function also as a shelter; 3) from the previous information that dogs infected with Ancylostoma caninum can present dodecanoic acid in their feces, we suggested that this substrate may be particularly more attractive to L. longipalpis females seen that this molecule is the same component of their oviposition pheromone, which is produced by the accessory glands and secreted onto the eggs; 4) after the copulation the males may landing on the substrate and continued beating the wings intermittently until the death in a similar behavior also noticed in other situations associated to kairomones response or pheromone production. Therefore, we suggested that it is very likely that dog excrements could serve as an important breeding substrate for L. longipalpis in endemic areas of visceral leishmaniasis in the New World.

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