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Search Results: 1 - 10 of 337693 matches for " Eric S. Sanches "
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Comparative Study of Conventional, Fuzzy Logic and Neural PID Speed Controllers with Torque Ripple Minimization for an Axial Magnetic Flux Switched Reluctance Motor  [PDF]
Eric S. Sanches, José A. Santisteban
Engineering (ENG) , 2014, DOI: 10.4236/eng.2014.611065
Abstract: Three speed controllers for an axial magnetic flux switched reluctance motor with only one stator, are described and experimentally tested. As it is known, when current pulses are imposed in their windings, high ripple torque is obtained. In order to reduce this ripple, a control strategy with modified current shapes is proposed. A workbench consisting of a machine prototype and the control system based on a microcontroller was built. These controllers were: a conventional PID, a fuzzy logic PID and a neural PID type. From experimental results, the effective reduction of the torque ripple was confirmed and the performance of the controllers was compared.
Eric Macedo Massa,Eric Macedo Massa,Jurandyr Luciano Sanches Ross,Jurandyr Luciano Sanches Ross
Revista do Departamento de Geografia , 2012, DOI: 10.7154/rdg.v0i24.355
Abstract: O presente artigo tem como objetivo analisar as fragilidades ambientais diante das interven es humanas na bacia do córrego do Bispo, uma área bastante representativa do processo de ocupa o desordenado na Serra da Cantareira. Como fundamento teórico-metodológico, adotou-se a proposta de ROSS (1994) - Análise empírica da fragilidade dos ambientes naturais e antropizados, baseada nos conceitos de Unidades Ecodinamicas de TRICART (1977). O diagnóstico das fragilidades ambientais, sintetizado no Mapa das Unidades Ecodinamicas de Instabilidade Potencial e Emergente, baseou-se na correla o de quatro fatores de análise: o relevo, o solo, a cobertura vegetal/uso da terra e o regime pluviométrico. Appliance of a “relief-soil” environmental fragility model in corrego do Bispo Basin, Serra da Cantareira, S o Paulo – SP Abstract: This article aims to analyze the environmental fragility of human interventions on stream in the basin of the Bispo, an area widely representative of the occupation process in the Serra da Cantareira disordered. As a theoretical and methodological framework, adopted the proposal of Ross (1994) - Empirical Analysis of the fragility of natural and anthropogenic, based on concepts of TRICART Ecodynamics Units (1977). The diagnosis of fragile environmental conditions, summarized in Map Units Ecodyanamics Potential Instability and Emergent, based on the correlation analysis of four factors: topography, soil, land cover / land use and rainfall. DOI: 10.7154/RDG.2012.0024.0004
Estudo Quantitativo da Apoptose no Epitélio Mamário Adjacente ao Fibroadenoma em Mulheres no Menacme Tratadas com Diferentes Doses de Tamoxifeno
Tanaka Paulo Sérgio Sanches
Revista Brasileira de Ginecologia e Obstetrícia , 2002,
XPS & FTIR Study of Adsorption Characteristics Using Cationic and Anionic Collectors on Smithsonite  [PDF]
Hosseini S. Hamid, Forssberg Eric
Journal of Minerals and Materials Characterization and Engineering (JMMCE) , 2006, DOI: 10.4236/jmmce.2006.51002
Abstract: The adsorption of cationic and anionic collectors on the surface of smithsonite was studied using diffuse reflectance FTIR (DRIFT) and X-ray photoelectron spectroscopy (XPS or ESCA) techniques. The FT-IR spectra studies of smithsonite conditioned using DDA (dodecylamine) show the presence of RNH2on the surface of smithsonite and accordingly the adsorption of DDA. XPS results show the presence of a ZnS layer on the surface after sulphidising in amine adsorption. The appearance of the N (1s) signal of the amine groups and S (2p) signal of ZnS which increased in the intensity of the signal of C (1s) peak by adsorption of DDA on smithsonite. The presence of COO- on the surface of smithsonite after oleic acid treatment confirmed the adsorption of OA (oleic acid) onto the surface. The most adsorption occurs at around pH 10, when RCOO- is predominant in solution and has ample opportunities for interaction with the mineral surface. The appearance of CS2 on the surface of smithsonite exposes the adsorption of KAX (potassium amyl xanthate) onto surface. XPS results confirm the presence of ZnS layer on the surface after sulphidising in amine adsorption and also the transferring the surface to CuS in KAX adsorption. It is suggested that copper cations exchange with those of zinc during copper activation of smithsonite such as activation of sphalerite.
Percepciones y prácticas de madres de pre-escolares brasile?os acerca de la alimentación de los hijos
Sanches Marins,S.; Andrade Rezende,M.;
Enfermería Global , 2011, DOI: 10.4321/S1695-61412011000100015
Abstract: introduction: in march, 2006, there were 5,.588,.153 children aged 4 to 6 years enrolled in brazilian pre-schools. unfortunately only 3.8% of these institutions have a health professional, in addition to which, the relationship between the pre-schools and the health system is poor. the first 5 years of life are crucial in the development of good eating habits, and consequently, for preventing degenerative illnesses in later life, such as obesity. objective: the aim of this study is to identify and analyze maternal perceptions and practices concerning the eating behaviors of children aged 3 to 6 years attending a brazilian pre-school. material and methods: a qualitative survey was carried out using individual, non-directive interviews. 21 mothers were interviewed: 10 with children enrolled in full-time classes and 11 with children in part-time classes. in terms of height and weight, the children were between the 10 and 90 percentile (nchs standard). for data analysis we used the method of thematic content analysis, as proposed by bardin. results: diet is an issue of major concern for these mothers. the main difficulty is child development: they do not know how to deal with it. therefore, they use harmful strategies, such as bargaining, coercion, disguising food, and punishment. also, they do not know how food is served in the preschool. however, 15 of the 21 children improved their eating behavior after attending the institution (autonomy, regular meal times, and better meal choices), particularly twhose attending the pre-school on a full-time basis. conclusion: brazilian pre-schools ought to implement health programs in partnership with the sus (unified health system) - the brazilian national health system.
Knowing Your Population: Privacy-Sensitive Mining of Massive Data
Pedro Sanches,Eric-Oluf Svee,Markus Bylund,Benjamin Hirsch,Magnus Boman
Computer Science , 2014, DOI: 10.5539/nct.v2n1p34
Abstract: Location and mobility patterns of individuals are important to environmental planning, societal resilience, public health, and a host of commercial applications. Mining telecommunication traffic and transactions data for such purposes is controversial, in particular raising issues of privacy. However, our hypothesis is that privacy-sensitive uses are possible and often beneficial enough to warrant considerable research and development efforts. Our work contends that peoples behavior can yield patterns of both significant commercial, and research, value. For such purposes, methods and algorithms for mining telecommunication data to extract commonly used routes and locations, articulated through time-geographical constructs, are described in a case study within the area of transportation planning and analysis. From the outset, these were designed to balance the privacy of subscribers and the added value of mobility patterns derived from their mobile communication traffic and transactions data. Our work directly contrasts the current, commonly held notion that value can only be added to services by directly monitoring the behavior of individuals, such as in current attempts at location-based services. We position our work within relevant legal frameworks for privacy and data protection, and show that our methods comply with such requirements and also follow best-practices
Agricultura e alimenta??o em popula??es ribeirinhas das várzeas do Amazonas: novas perspectivas
Adams, Cristina;Murrieta, Rui Sérgio S.;Sanches, Rosely Alvim;
Ambiente & Sociedade , 2005, DOI: 10.1590/S1414-753X2005000100005
Abstract: the main objective of this research is to characterize and compare household food intake of two riverine populations located in the floodplains of the lower amazon (ituqui island, santarém-pa) (1995-97). a special emphasis is given to the role of agriculture in the food consumption patterns of these populations. the obtained results indicate high levels of protein intake in relation to energy intake, relative seasonal instability of energy sources, and increasing dependency on imported industrialized foodstuffs. in spite of such a pattern, food items locally produced such as manioc flour (farinha) and fish remain as the main part of local diet. in addition, a broad array of subsistence and commercial activities as well as the intense exploitation of different ecological zones by the local population were observed. the above scenario tends to undermine some of the major assumptions on the supposed environmental homogeneity and simplicity of productive strategies among native populations, which have dominated until recently the development of academic knowledge and practice.
Can Digital Games Be a Way of Improving the Neuroplasticity in Stroke Damage? Can the Adult Brain Grow New Cells or Rewire Itself in Response to a New Experience?  [PDF]
Livia Stocco Sanches Valentin
Open Journal of Medical Psychology (OJMP) , 2017, DOI: 10.4236/ojmp.2017.62013
Abstract: Exploratory studies developed at several neurosciences laboratories at universities around the world show us through the experience that there is a biological process called neuroplasticity. Because of this oldest concept about the neuronal formation, scientists also thought that if a particular area of the adult brain was damaged, the nerve cells could not form new connections and the functions controlled by this field of the brain would be permanently lost or could not be regenerate. However, studies have overturned this old view, and currently, scientists recognize that the brain continues to reorganize itself by forming new neural connections during the life. This phenomenon is called neuroplasticity that refers to the potential which the brain should be reorganized by creating new neural pathways to adapt, as it needs.
Insights into Pneumococcal Pathogenesis and Antibiotic Resistance  [PDF]
Eric S. Donkor, Ebenezer V. Badoe
Advances in Microbiology (AiM) , 2014, DOI: 10.4236/aim.2014.410069

Since its discovery in 1891, the pneumococcus has been one of the most extensively studied microbes, and was involved in several historical findings such as the discovery of genetic material that was later shown to be DNA. The pneumococcus is part of the normal bacterial flora of the nasopharynx, but can on occasions progress to sterile sites of the body and cause invasive diseases. There are about one million new invasive pneumococcal infections every year, majority of which occur in the developing world where children <5 years are most affected. The burden of pneumococcal disease is further heightened by the increasing prevalence of multidrug resistance of the organism. The pneumococcus remains a pathogen of immense public health significance and understanding its biology, particularly the pathogenesis and antibiotic resistance is crucial to controlling pneumococcal disease.

Simulador eletr?nico: uma contribui??o para o treinamento inicial em cirurgia videoendoscópica
Guerra, Alvino Jorge;Silva, Luís Antonio Sanches da;
Acta Cirurgica Brasileira , 1999, DOI: 10.1590/S0102-86501999000300010
Abstract: the authors report the use of a colored microcamera; one of these used in eletronic systems of safety, mounted on a stem with vertical, horizontal and obliques movements, inside a wooden box covered witer fórmica, fed by a stabilized source of 12 volts. another source of ajusted feeding of 12 volts, suplies energy to a blower, which is responsible for the cooling of the system. the intensity of light of two lamps dicroic of 50 watts each is regulated by a dimmer. in that way, the obtained images become similar to the one from the original equipments of videoendoscopy surgery, helping the beginners to acquire necessary motor coordination to the domain of the technique, with real simulation, superior to the that obtained with "black boxes" with mirrors and static cameras. courses of videoendoscopy surgery have in electronic simulator an important training instrument and surgical demonstration.
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