Publicações - ciências exatas e da terra
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Daniel Arana;
Fabricio dos Santos Prol;
Prof. Paulo de Oliveira Camargo;
GABRIEL DO NASCIMENTO GUIMARÃES
Palavra-chave:
MAPGEO2015;
bilinear;
spline;
RBF
Áreas do conhecimento:
Ciências Exatas e da Terra; Geodésia; Geodésia Física;
Ciências Exatas e da Terra; Geociências; Geofísica; Geofísica Aplicada
resumo ...
Abstract: The geoid is an equipotential surface regarded as the altimetric reference for...
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Nadyne Venturini Trindade;
Bárbara Schausteck de Almeida;
Wanderley Marchi Júnior
Palavra-chave:
esporte;
pacificação;
esporte para desenvolvimento paz;
cidade olímpica;
Rio de Janeiro
Áreas do conhecimento:
Ciências da Saúde; Farmacologia; Transmissão Neuromuscular;
Ciências Exatas e da Terra; Geociências; Sociologia do Esporte
resumo ...
(en)
This article discusses the use of sports to promote peace and the main aspects analyzed in the international context, indicating similarities to and differences from the actions promoted in the so-called “pacification” in areas in Rio de Janeiro. A literature review based on systematic review procedures found that the lack of cultural sensitivity and consideration for social exclusion processes by its creators results in increasing militarization of space in those communities, which restricts the long-term sustainability of those sports projects.
(es)
En este artículo se discute el uso del deporte para promover la paz a partir de los principales aspectos analizados en el contexto internacional, indicando las similitudes y las alteridades con las acciones promovidas en las zonas de pacificación de Río de Janeiro. A partir de la revisión de la literatura basada en los procedimientos de revisión sistemática, se observó que la falta de sensibilidad cultural y consideración de los procesos de exclusión social por sus creadores dan como resultado el aumento de la militarización del espacio de las comunidades, que impone límites en la sostenibilidad de estos proyectos deportivos en el largo plazo.
(pt)
Este artigo discute o uso do esporte para a promoção da paz e os principais aspectos analisados no contexto internacional, traçando correspondências e alteridades com as ações promovidas nas áreas de pacificação no Rio de Janeiro. A partir da revisão da literatura com base em procedimentos da revisão sistemática, observou-se que a falta de sensibilidade cultural e de consideração dos processos de exclusão social por parte de seus idealizadores resultam na crescente militarização do espaço das comunidades, o que impõe limites à sustentabilidade desses projetos esportivos a longo prazo.
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CASTRO, OLACIR R.;
FRITSCHE, GIAN MAURICIO;
Aurora Trinidad Ramirez Pozo
Palavra-chave:
algoritmos bio-inspirados;
hiper-heuristicas;
multiobjetivo;
Nuvem de Particulas
Áreas do conhecimento:
Ciências Exatas e da Terra; Ciência da Computação; Metodologia e Técnicas da Computação; Engenharia de Software
resumo ...
Multi-objective particle swarm optimization (MOPSO) is a promising meta-heuristic to solve multi-objective problems (MOPs). Previous works have shown that selecting a proper combination of leader and archiving methods, which is a challenging task, improves the search ability of the algorithm. A previous study has employed a simple hyper-heuristic to select these components, obtaining good results. In this research, an analysis is made to verify if using more advanced heuristic selection methods improves the search ability of the algorithm. Empirical studies are conducted to investigate this hypothesis. In these studies, first, four heuristic selection methods are compared: a choice function, a multi-armed bandit, a random one, and the previously proposed roulette wheel. A second study is made to identify if it is best to adapt only the leader method, the archiving method, or both simultaneously. Moreover, the influence of the interval used to replace the low-level heuristic is analyzed. At last, a final study compares the best variant to a hyper-heuristic framework that combines a Multi-Armed Bandit algorithm into the multi-objective optimization based on decomposition with dynamical resource allocation (MOEA/D-DRA) and a state-of-the-art MOPSO. Our results indicate that the resulting algorithm outperforms the hyper-heuristic framework in most of the problems investigated. Moreover, it achieves competitive results compared to a state-of-the-art MOPSO.
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NUNES, RAFAELA K. V.;
MARTINS, ULISSES N.;
BRITO, THAYSNARA B.;
NEPEL, ANGELITA;
COSTA, EMMANOEL V.;
Barison, Andersson;
SANTOS, ROSELI L. C.;
CAVALCANTI, SÓCRATES C. H.
Áreas do conhecimento:
Ciências Exatas e da Terra; Química; Ressonancia Magnetica Nuclear;
Engenharias; Engenharia Química; Tecnologia Química; Produtos Naturais;
Ciências Exatas e da Terra; Química; Química Orgânica; Estrutura, Conformação e Estereoquímica
resumo ...
Zika, dengue, and chikungunya are vector-borne diseases of pronounced concern transmitted by the mosquito Aedes aegypti Linn. (Diptera: Culicidae). The most important method to avoid outbreaks is to control mosquito spreading by the employment of insecticides and larvicides. Failure to control mosquito dispersal is mostly accounted to Ae. aegypti resistance to currently available larvicides and insecticides, encouraging the development of novel pesticides. In addition, the excessive use of larvicides poses serious threats to human health and the environment. Evaluation of natural products as larvicides in an attempt to overcome this situation is often found in the literature because products originated from nature are considered less toxic to non-target species and more eco-friendly. (–)-Borneol is a bicyclic monoterpene present in essential oils with moderate larvicidal activity. On account of these facts, it was of our interest to synthesize (–)-borneol ester derivatives aiming to study its structure-activity relationships against Ae. aegypti larvae. With the goal to estimate toxicity to a non-target species, evaluation of the lethal concentration 50% (LC50) on Artemia sp. (Artemiidae) and calculation of selectivity towards Ae. aegypti were carried out. The most potent derivative, (–)-Bornyl chloroacetate, exhibited the highest suitability index, demonstrating lower environmental toxicity than other borneol ester derivatives. A parabolic relationship between (–)-borneol esters larvicidal activity and partition coefficient (Log P) was achieved and a correlation equation obtained, validating the importance of lipophilicity to the larvicidal activity of these compounds.
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Dorie Fernanda Zattoni;
Frederico Guilherme Freitas Lobão Rodrigues Gomes;
João Armando Brancher;
DJANIRA APARECIDA DA LUZ VERONEZ;
Ana Tereza Bittencourt Guimaraes;
Maria Fernanda Torres
ARCHIVES OF VETERINARY SCIENCE,
v. 23,
n. 1,
p. 1-8,
2018
Palavra-chave:
Endodontics;
rotary instruments;
Root Canal
Áreas do conhecimento:
Ciências da Saúde; Farmacologia; Transmissão Neuromuscular;
CIENCIAS_AGRARIAS; Medicina Veterinária;
Ciências Exatas e da Terra; Probabilidade e Estatística; Bioestatística
resumo ...
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Thaís Maylin Sobjak;
ROMÃO, SILVIA;
Luísa Helena Cazarolli;
Silvio César Sampaio;
Marcelo B. Remor;
Ana Tereza Bittencourt Guimaraes
Palavra-chave:
Estresse Oxidativo;
Rio Iguaçu;
cholinesterase enzyme activity
Áreas do conhecimento:
Ciências Biológicas; Toxicologia; Ecotoxicologia;
Ciências Exatas e da Terra; Probabilidade e Estatística; Bioestatística
resumo ...
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DA SILVA, RAFAEL M.;
MANCHEIN, CESAR;
Marcus W. Beims
Palavra-chave:
dinâmica não-linear;
sistemas conservativos;
estatisitica dos tempos recorrencia
Áreas do conhecimento:
Ciências Exatas e da Terra; Dinâmica Não-Linear
resumo ...
In this work, noise is used to analyze the penetration of regular islands in conservative dynamical systems. For this purpose we use the standard map choosing nonlinearity parameters for which a mixed phase space is present. The random variable which simulates noise assumes three distributions, namely equally distributed, normal or Gaussian, and power law (obtained from the same standard map but for other parameters). To investigate the penetration process and explore distinct dynamical behaviors which may occur, we use recurrence time statistics (RTS), Lyapunov exponents and the occupation rate of the phase space. Our main findings are as follows: (i) the standard deviations of the distributions are the most relevant quantity to induce the penetration; (ii) the penetration of islands induce power-law decays in the RTS as a consequence of enhanced trapping; (iii) for the power-law correlated noise an algebraic decay of the RTS is observed, even though sticky motion is absent; and (iv) although strong noise intensities induce an ergodic-like behavior with exponential decays of RTS, the largest Lyapunov exponent is reminiscent of the regular islands.
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ESCORSIM, ALEXIS M.;
DA ROCHA, GRAZIELLI;
VARGAS, JOSÉ V.C.;
MARIANO, ANDRÉ B.;
RAMOS, LUIZ P.;
Marcos Lúcio Corazza;
Claudiney Soares Cordeiro
Palavra-chave:
biodiesel;
microalgas;
Extração de lipídios
Áreas do conhecimento:
Ciências Exatas e da Terra; Química Orgânica; Síntese Orgânica
resumo ...
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PINTO, RODRIGO B.;
PERALTA-ZAMORA, PATRICIO;
WYPYCH, FERNANDO
Palavra-chave:
Photochemical degradation;
azo dyes;
zinc titanate;
semiconductor
Áreas do conhecimento:
Ciências Exatas e da Terra; Engenharia e Ciencia de Materiais; Materiais de Baixa Dimensionalidade Estrutural;
Ciências Exatas e da Terra; Química; Físico-Química; Cinética Química e Catálise
resumo ...
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LOPES, LAIS C;
SILVA, LIDYA C;
GONTIJO VAZ, BONIEK;
Alfredo Ricardo Marques de Oliveira;
OLIVEIRA, MARCELA M.;
ROCCO, MARIA LUIZA;
ORTH, ELISA S;
ZARBIN, ALDO J.G.
Áreas do conhecimento:
Ciências Exatas e da Terra; Química Orgânica; Físico-Química Orgânica
resumo ...
The largest graphene sample obtained through a chemical reaction under ambient conditions (temperature and pressure), using simple molecules such as benzene or n-hexane as precursors, is reported. Starting from a heterogeneous reaction between solid iron chloride and the molecular precursor (benzene and n-he
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