Projeto de controladores robustos para acionamento de um motor de indução trifásico

Pós-graduação em Engenharia Elétrica - FEIS

A compreensão da definição freudiana do conceito de pulsão sexual para a compreensão do conceito de sexualidade humana

This article approaches the definition of sexual drive proposed by Freud in the Three Essays and how the psychoanalytic conception of human sexuality has been theoretically presented from this first exposition: both as a construct of the species and as an individual construct. It seeks to show how the very metapsychological definition of drive (Trieb) – in 1905 and also in Freud’s 1915 Instincts and their Vicissitudes – interlaced biological contributions and the psychoanalytic clinic in the formulation of an original concept of the human sexuality. The paper also discusses how, because of this duplicity, there is sometimes a developmental interpretation of sexuality in the Three Essays. In the first two of the Three essays, Freud tried to expand the possibilities of sexual behavior, analyzing the drives in the diversity of perversions and in children’s sexuality, while in the third essay the focus was on the adult sexual drive from the moment it organizes itself around an object (hence being no longer auto-erotic) and the reproduction function. Certain experts have occasionally questioned whether the 1905 article attributed a biological teleology to the human sexuality by assigning reproduction as the eventual purpose of the sexual drive – that is, a reproductive goal achieved through the sexual intercourse (coitus). Our study seeks to show how the physiological point of view proposed by Freud in his 1915 article on Instincts sheds some light on how the very biological origin of the drives denies this supposed exclusive reproductive purpose of sexuality. The duplicity of Freud’s concept of drive – as expressed in the enigmatic sentence where he states that this is a concept situated on the border between the psychical and the physical – is then discussed taking into account this intercrossing between the biological and the psychical presented in the Three Essays. The points of view proposed by Freud in 1915 for the definition of the concept of drive – the physiological and the biological points of view – are suggested as conceptual tools to the understanding of this twofold character of human sexuality, according to psychoanalysis.

A concepção de sublimação no trabalho de Jean Laplanche

The theory of generalized seduction is a proposal for a new foundation to psychoanalysis that promotes a crucial metapsychological repositioning to rescue the other's role in subjectivity constituyion. The aim of this paper is to present and to discuss the concept of sublimation in this reference, working difficulties and limitations of a strict notion in which the concept appears as a mere modification of the object and the target of sexual drive. It is intended to discuss the limitations of this conception in its task of articulation between the individual subjectivity and the cultural organization, indicating the proposal of Jean Laplanche for originary sublimation and neoformation of drive, as attempts to overcome some of these theoretical and conceptual impasses. We conclude that Laplanche´s proposal is insufficient to account for the limitations in the theories of drives and culture in psychoanalysis, therefore, that it is a problem still current and relevant in this field of studies.

Estresse no ambiente de trabalho

Stress relates to the broad and generalized body's responses to various environmental, physical and social situations. It is the force that drives the emotions and motives (desires), but is also the cause of the wear and tear of human existence. This study aims to investigate the stressors in administrative technical servers Univ. Estadual Paulista - UNESP, Bauru, as well as on companies providing service within the perimeter of the campus. Was used as a methodology, literature and field research, a questionnaire was applied in order to reach those goals. The profiles of employees who participated in the survey were: both sexes, adults, young people with different educational levels, varying levels of marital and socioeconomic status. The main stressors mentioned by the employees were: workload, dissatisfaction in the workplace, pressure boss or colleagues, as they bring consequences, fatigue or drowsiness, affecting the work environment and mostly family. Physical symptoms of stress are fatigue, difficulty relaxing and headache, and backache. And the psychological symptoms are verbalized concern, agitation, aggression, dissatisfaction, and forgetfulness and feeling of lack of time. It was concluded that these factors negatively affect the quality of life in the work of these employees, interfering with your work, family and socio-emotional life.

Mapeamento geológico-geotécnico por meio de análise integrada no Parque Estadual do Juquery - Franco da Rocha-SP

Pós-graduação em Geociências e Meio Ambiente - IGCE

Constitucionalização do processo: a busca pela celeridade e seus reflexos na garantia dos direitos fundamentais

Pós-graduação em Direito - FCHS

Benefícios na execução de uma obra sustentável em contrapartida aos métodos tradicionais da construção civil

The civil construction sector in Brazil is, simultaneously, a necessity that drives the economy and an evil that degrades the environment. Simple choices adopted in an enterprise can make big difference in harm caused by constructive practices, minimizing its harmful to the environment and making it sustainable. These choices, however, involve the use of materials and techniques often unknown by the builders, since the construction industry is very traditional. Even worse, the eco-friendly materials and sustainable techniques also face another obstacle to its use: the prejudice. Builders and customers prefer traditional methods to sustain belief that they present lower quality and higher price. This work raises awareness of the urgency with traditional methods must be overridden, showing practical and simple ways for this replacement, as well as confirm the quality equal to or even higher in the use of alternative materials and techniques, without addition in cost. Thus, the benefits are generated for all parties involved, from builders to residents

Automação em raspadora de pneus utilizando controle numérico computadorizado com controlador lógico programável integrado

This work studies and develops a machine automation for tyre truing. It is discussed industry development, industrial processes automation, tyre-recycling process, advantages of tyre reuse for preservation of the environment and probable gains from the automation of part of the tyre-recycling process. In this text, it is detailed the work done to configure, program and optimize the truing process through automation components as CNC, PLC and drives. Tests and simulations are performed to determine the payback necessary period in productivity and profit gains

Benefícios na execução de uma obra sustentável em contrapartida aos métodos tradicionais da construção civil

The civil construction sector in Brazil is, simultaneously, a necessity that drives the economy and an evil that degrades the environment. Simple choices adopted in an enterprise can make big difference in harm caused by constructive practices, minimizing its harmful to the environment and making it sustainable. These choices, however, involve the use of materials and techniques often unknown by the builders, since the construction industry is very traditional. Even worse, the eco-friendly materials and sustainable techniques also face another obstacle to its use: the prejudice. Builders and customers prefer traditional methods to sustain belief that they present lower quality and higher price. This work raises awareness of the urgency with traditional methods must be overridden, showing practical and simple ways for this replacement, as well as confirm the quality equal to or even higher in the use of alternative materials and techniques, without addition in cost. Thus, the benefits are generated for all parties involved, from builders to residents

Automação em raspadora de pneus utilizando controle numérico computadorizado com controlador lógico programável integrado

This work studies and develops a machine automation for tyre truing. It is discussed industry development, industrial processes automation, tyre-recycling process, advantages of tyre reuse for preservation of the environment and probable gains from the automation of part of the tyre-recycling process. In this text, it is detailed the work done to configure, program and optimize the truing process through automation components as CNC, PLC and drives. Tests and simulations are performed to determine the payback necessary period in productivity and profit gains

Electric consumption in SHSs in rural communities of brazil and Peru and recommendations for sizing

The lack of data records of electric power consumption of smallphotovoltaic home systems, independently of the method used for sizing them, drives to consider the demand as a constant. However, the existing data reveal the variability of the consumption due to the influences of some social, cultural and psychosocial aspects of the human groups. This paper presents records of consumption data obtainedfrom several solar home systems (SHSs) in Brazil and Peru, and it discusses about the Gamma distribution function that can express to a great extent the behaviour of the demand. By this analysis it was verified that `a lot of people consume little and few people consume a lot`. In that sense, a few recommendations for sizing procedures that can be useful in the implantation of extensive programmes of rural electrification by SHSs are presented. Copyright (c) 2007 John Wiley & Sons, Ltd.

Changes in the intermediate water mass formation rates in the global ocean for the Last Glacial Maximum, mid-Holocene and pre-industrial climates

The paleoclimate version of the National Center for Atmospheric Research Community Climate System Model version 3 (NCAR-CCSM3) is used to analyze changes in the water formation rates in the Atlantic, Pacific, and Indian Oceans for the Last Glacial Maximum (LGM), mid-Holocene (MH) and pre-industrial (PI) control climate. During the MH, CCSM3 exhibits a north-south asymmetric response of intermediate water subduction changes in the Atlantic Ocean, with a reduction of 2 Sv in the North Atlantic and an increase of 2 Sv in the South Atlantic relative to PI. During the LGM, there is increased formation of intermediate water and a more stagnant deep ocean in the North Pacific. The production of North Atlantic Deep Water (NADW) is significantly weakened. The NADW is replaced in large extent by enhanced Antarctic Intermediate Water (AAIW), Glacial North Atlantic Intermediate Water (GNAIW), and also by an intensified of Antarctic Bottom Water (AABW), with the latter being a response to the enhanced salinity and ice formation around Antarctica. Most of the LGM intermediate/mode water is formed at 27.4 < sigma(theta) < 29.0 kg/m(3), while for the MH and PI most of the subduction transport occurs at 26.5 < sigma(theta) < 27.4 kg/m(3). The simulated LGM Southern Hemisphere winds are more intense by 0.2-0.4 dyne/cm(2). Consequently, increased Ekman transport drives the production of intermediate water (low salinity) at a larger rate and at higher densities when compared to the other climatic periods.

New cosmic accelerating scenario without dark energy

We propose an alternative, nonsingular, cosmic scenario based on gravitationally induced particle production. The model is an attempt to evade the coincidence and cosmological constant problems of the standard model (Lambda CDM) and also to connect the early and late time accelerating stages of the Universe. Our space-time emerges from a pure initial de Sitter stage thereby providing a natural solution to the horizon problem. Subsequently, due to an instability provoked by the production of massless particles, the Universe evolves smoothly to the standard radiation dominated era thereby ending the production of radiation as required by the conformal invariance. Next, the radiation becomes subdominant with the Universe entering in the cold dark matter dominated era. Finally, the negative pressure associated with the creation of cold dark matter (CCDM model) particles accelerates the expansion and drives the Universe to a final de Sitter stage. The late time cosmic expansion history of the CCDM model is exactly like in the standard Lambda CDM model; however, there is no dark energy. The model evolves between two limiting (early and late time) de Sitter regimes. All the stages are also discussed in terms of a scalar field description. This complete scenario is fully determined by two extreme energy densities, or equivalently, the associated de Sitter Hubble scales connected by rho(I)/rho(f) = (H-I/H-f)(2) similar to 10(122), a result that has no correlation with the cosmological constant problem. We also study the linear growth of matter perturbations at the final accelerating stage. It is found that the CCDM growth index can be written as a function of the Lambda growth index, gamma(Lambda) similar or equal to 6/11. In this framework, we also compare the observed growth rate of clustering with that predicted by the current CCDM model. Performing a chi(2) statistical test we show that the CCDM model provides growth rates that match sufficiently well with the observed growth rate of structure.

Electromagnetic torque ripple and copper losses reduction in permanent magnet synchronous machines

This paper presents a method for electromagnetic torque ripple and copper losses reduction in (non-sinusoidal or trapezoidal) surface-mount permanent magnet synchronous machines (SM-PMSM). The method is based on an extension of classical dq transformation that makes it possible to write a vectorial model for this kind of machine (with a non-sinusoidal back-EMF waveform). This model is obtained by the application of that transformation in the classical machine per-phase model. That transformation can be applied to machines that have any type of back-EMF waveform, and not only trapezoidal or square-wave back-EMF waveforms. Implementation results are shown for an electrical converter, using the proposed vectorial model, feeding a non-sinusoidal synchronous machine (brushless DC motor). They show that the use of this vectorial mode is a way to achieve improvements in the performance of this kind of machine, considering the electromagnetic torque ripple and copper losses, if compared to a drive system that employs a classical six-step mode as a converter. Copyright (C) 2011 John Wiley & Sons, Ltd.

Increased NHE3 abundance and transport activity in renal proximal tubule of rats with heart failure

Inoue BH, dos Santos L, Pessoa TD, Antonio EL, Pacheco BPM, Savignano FA, Carraro-Lacroix LR, Tucci PJF, Malnic G, Girardi ACC. Increased NHE3 abundance and transport activity in renal proximal tubule of rats with heart failure. Am J Physiol Regul Integr Comp Physiol 302: R166-R174, 2012. First published October 26, 2011; doi:10.1152/ajpregu.00127.2011.-Heart failure (HF) is associated with a reduced effective circulating volume that drives sodium and water retention and extracellular volume expansion. We therefore hypothesized that Na(+)/H(+) exchanger isoform 3 (NHE3), the major apical transcellular pathway for sodium reabsorption in the proximal tubule, is upregulated in an experimental model of HF. HF was induced in male rats by left ventricle radiofrequency ablation. Sham-operated rats (sham) were used as controls. At 6 wk after surgery, HF rats exhibited cardiac dysfunction with a dramatic increase in left ventricular end-diastolic pressure. By means of stationary in vivo microperfusion and pH-dependent sodium uptake, we demonstrated that NHE3 transport activity was significantly higher in the proximal tubule of HF compared with sham rats. Increased NHE3 activity was paralleled by increased renal cortical NHE3 expression at both protein and mRNA levels. In addition, the baseline PKA-dependent NHE3 phosphorylation at serine 552 was reduced in renal cortical membranes of rats with HF. Collectively, these results suggest that NHE3 is upregulated in the proximal tubule of HF rats by transcriptional, translational, and posttranslational mechanisms. Enhanced NHE3-mediated sodium reabsorption in the proximal tubule may contribute to extracellular volume expansion and edema, the hallmark feature of HF. Moreover, our study emphasizes the importance of undertaking a cardiorenal approach to contain progression of cardiac disease.