Approximation Models
Mostrando 13-24 de 169 artigos, teses e dissertações.
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13. Aproximación a la experiencia de personas viejasque viven solas en contextos precarios: Ciudad Bolívar, Bogotá-Colombia
Abstract This article presents the results of a qualitative approximation of the city conditions perceived by older adults in a precarious urban context of Bogotá-Colombia. For this approach, some domains of the “Age-friendly Cities” models, by the World Health Organization, were used, such as: habitation, habitability, transportation, community support
Saude soc.. Publicado em: 2018-06
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14. IMPACT OF THE HYDRAULIC LOADING RATE ON THE HYDRODYNAMIC CHARACTERISTICS OF AN ANAEROBIC FIXED BED REACTOR TREATING CATTLE SLAUGHTERHOUSE WASTEWATER
ABSTRACT The hydrodynamic behavior of an anaerobic fixed bed reactor (AFBR) was evaluated in the treatment of cattle slaughterhouse wastewater. The AFBR was operated at hydraulic retention time (HRT) of 14, 11 and 8 h. Stimulus-response assays were carried out with Eosin Y and the experimental data were adjusted to the single-parameter theoretical models of
Eng. Agríc.. Publicado em: 2018-06
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15. NETWORK FLOW ORIENTED APPROACHES FOR VEHICLE SHARING RELOCATION PROBLEMS
ABSTRACT Managing a one-way vehicle sharing system means periodically moving free access vehicles from excess to deficit stations in order to avoid local shortages. We propose and study here several network flow oriented models and algorithms which deal with a static version of this problem while unifying preemption and non preemption as well as carrier ridi
Pesqui. Oper.. Publicado em: 2017-09
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16. DRYING KINETICS OF PEANUT KERNELS IN THIN LAYERS
ABSTRACT: The aim of this study was to adjust mathematical models to the experimental data on the peanut kernels drying in thin layer, as well as to determine the effective diffusion coefficient and the main thermodynamic properties involved in drying of the grains under different air conditions. The peanut kernels, with a water content of 0.59 ± 0.002 (dry
Eng. Agríc.. Publicado em: 2017-09
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17. Investigation of Wedge Water-Entry Under Symmetric Impact Loads by Experimental Tests
Abstract One of the main challenges for engineers in designing high-speed crafts is the evaluation of hydrodynamic loads during the impact of hull to wave’s surface. This paper presents an experimental investigation on the pressure distribution on three wedge-sections with 15°, 20° and 30° deadrise during water-entry. Assessment of pressure distribution
Lat. Am. j. solids struct.. Publicado em: 2017-06
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18. Validation and Invariance of the Dental Anxiety Scale in a Brazilian sample
Abstract: The aim of this study was to evaluate the properties of the Dental Anxiety Scale (DAS) when applied to Brazilian adults and to test its invariance across independent samples and different sociodemographic groups. Sociodemographic data, reports on previous unpleasant dental experiences and DAS responses were collected through telephone interviews. M
Braz. oral res.. Publicado em: 22/12/2016
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19. THE IMPACT OF RADIATION IN THE GAS COMBUSTION MODEL FOR SUGARCANE BAGASSE GRATE BOILER
Abstract This work evaluates the impact of different radiation models on the results of Computational Fluid Dynamics (CFD) simulation of a sugarcane bagasse grate boiler. CFD has been applied extensively in the development of comprehensive models for biomass heterogeneous combustion. The model presented in this paper considers the turbulent flow represented
Braz. J. Chem. Eng.. Publicado em: 2016-09
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20. An efficient method of EM field modification around transmitting stations
AbstractAn efficient practical method for the electromagnetic (EM) fields reduction around transmitting stations has been developed. The project has been stimulated by the necessity to reduce the field levels in the vicinity of transmitting stations, including FM, UHF, cellular base stations and other radiocommunication services, to obey regulations concerni
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2015-06
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21. Application of nonlocal elasticity and DQM to dynamic analysis of curved nanobeams
In this paper, a new numerical technique, the differential quadrature method (DQM) has been developed for dynamic analysis of the nanobeams in the polar coordinate system. DQ approximation of the required partial derivatives is given by a weighted linear sum of the function values at all grid points. A semicircular arch with small-scale effects is investigat
Lat. Am. j. solids struct.. Publicado em: 2014-10
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22. Therapeutic concentration of morphine reduces oxidative stress in glioma cell line
Morphine is a potent analgesic opioid used extensively for pain treatment. During the last decade, global consumption grew more than 4-fold. However, molecular mechanisms elicited by morphine are not totally understood. Thus, a growing literature indicates that there are additional actions to the analgesic effect. Previous studies about morphine and oxidativ
Braz J Med Biol Res. Publicado em: 11/04/2014
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23. Instituições e crescimento econômico: os modelos teóricos de Thorstein Veblen e Douglass North
Institutions and economic growth: The theoretical models of Thorstein Veblen and Douglass North. The aim of this work is to analyse the role of institutions in the economical growing. It searches for propose two theoretical models that explain the development, one is according to Thorstein Veblen and the other one is based on Douglass North. Thus, it summari
Brazil. J. Polit. Econ.. Publicado em: 2013-12
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24. Sensitivity analysis and parameter estimation of heat transfer and material flow models in friction stir welding
Although numerical models of heat transfer and material flow have contributed to understand the underlying mechanisms of friction stir welding (FSW), there are certain input model parameters that can not be easily determined. Thus, the model predictions do not always agree with experimental results. In this work, sensitivity analysis and parameter estimation
Mat. Res.. Publicado em: 08/11/2013