941 resultados para correntes neutras
Resumo:
The citizenship is a fundamental category to the democratic progress and the development and concretization of human rights, in addition to being one of the essential foundations of democratic contextualized in the rule of law of the Federative Republic of Brazil. That’s exactly why the discussion about its concept and content is a paramount requirement to the understanding and interpretation-application-concretization of the Federal Constitution of 1988, as well as its democracy, since there is no democracy without citizenship. That is why the general objective of the research is to determine the characteristics of the citizenship, relating it to the Law, as well as to discuss (critically) its inclusion in the list of fundamental rights and delimitate the scope of protection and the limits of this right, in the context of Brazilian law post-1988 Constitution. The specific objectives are: a) to analyze the concept of citizenship, its extent and scope, contextualizing it historically; b) to examine the evolution of the legal and regulatory treatment of the citizenship in Brazilian constitutions, focusing on the 1988 Constitution; c) assess whether citizenship can be considered a fundamental right; d) to investigate which implications, theoretical and practical, of assignment fundamentality character to the right to citizenship. This research identifies and deconstructs current conceptual confusions, such as the lack of distinction between citizenship and nationality; citizenship and electoral capacity; citizenship and person. It also helps to identify and oppose the generalizations, as well as the excessively abstract associations which tend to purely metaphysical understandings, fluid and empty of any content. The main virtue, however, is the proposed of understanding of the citizenship as a fundamental right and the examination of the relationship between citizenship and human dignity. In this context, citizenship appears as a corollary of human dignity and it goes beyond. This (human dignity) requires equality, non-arbitraries, non-excessive, disproportionate or unreasonable impositions affecting their freedom rights, and, yet, doesn’t affect a minimum core of possibilities of have to a decent life, in conditions of freedom and self-conformation involved in the necessary consideration of the individual as a subject. All of this requires a decision-making process, molded by the citizenship, which reaches the entire development process of possible state interventions, to ensure the person as a subject, the right holder and the objective point of reference of the juridical relations. Thus, the citizenship represents a substantial and beneficial addition to the human dignity, since the emancipated citizen is a person, formally and materially, qualified, to be able to build their own and collectively organized history, to participate effectively in the making processes decision juridical and social
Resumo:
The conventional control schemes applied to Shunt Active Power Filters (SAPF) are Harmonic extractor-based strategies (HEBSs) because their effectiveness depends on how quickly and accurately the harmonic components of the nonlinear loads are identified. The SAPF can be also implemented without the use of the load harmonic extractors. In this case, the harmonic compensating term is obtained from the system active power balance. These systems can be considered as balanced-energy-based schemes (BEBSs) and their performance depends on how fast the system reaches the equilibrium state. In this case, the phase currents of the power grid are indirectly regulated by double sequence controllers with two degrees of freedom, where the internal model principle is employed to avoid reference frame transformation. Additionally the DSC controller presents robustness when the SAPF is operating under unbalanced conditions. Furthermore, SAPF implemented without harmonic detection schemes compensate simultaneously harmonic distortion and reactive power of the load. Their compensation capabilities, however, are limited by the SAPF power converter rating. Such a restriction can be minimized if the level of the reactive power correction is managed. In this work an estimation scheme for determining the filter currents is introduced to manage the compensation of reactive power. Experimental results are shown for demonstrating the performance of the proposed SAPF system.
Resumo:
The Área de Proteção Ambiental de Jenipabu was created by Decreto 12,620/95, covering the beaches of Redinha Nova, Santa Rita and Jenipabu and Campina communities in the municipality of Extremoz, and Africa community fragment, in Natal. This protected area was created in the context of expansion of tourism in Rio Grande do Norte, in the 1990s, in which PRODETUR investments made possible the installation of infrastructure equipment, mainly in the Via Costeira and Ponta Negra beach in Natal by inserting it in the sun and sea tourism route to Northeast Brazil. In this context the beach Jenipabu in Extremoz, became one of the main attractions for those visiting Natal, due to the natural elements of its landscape, its dune field, which is offered to tourists the buggy ride. In December 1994 the excess buggy rides held in these dunes led to IBAMA ban their access to buggy for carrying out environmental study. This measure resulted in the creation of APAJ in 1995 with the goal of ordering the use and occupation to protect its ecosystems, especially the dunes, the disordered tourism. Given this context, this work aims to analyze the process of creating the APAJ and changes in the geographic space of its beaches, Redinha Nova, Santa Rita and Jenipabu, from the materialization of tourism process, as well as their implications for its residents. To this end, this paper presents a discussion of environmental currents that developed in the western portion of the globe, focusing on the need to regulate small areas of the national territory in protected areas, and an analysis of public policies that enabled the implementation tourism in APAJ as well as the laws and decrees governing the process of creation and management. Using the theory of circuits of urban economy of the Santos (2008) to analyze the territory used by tourism on the beaches of Redinha Nova, Santa Rita and Jenipabu, showing their dependent relationship with the territory used by the upper circuit on the Via Costeira and in the Ponta Negra beach and its influence on the APAJ urbanization process. Ending with the analysis of the influence of the materialization of tourism in the transformation of stocks ways of being-in-space and space-be of the Santa Rita and Jenipabu beaches in each geographical situation of APAJ among the first decades of the twentieth century to the 2014. Fieldwork was conducted between 2012 and 2014, performing actions of qualitative interviews with older residents of Santa Rita and Jenipabu beaches, interviews with structured questionnaire with merchants of APAJ and collecting GPS points trades, identifying and mapping the territory used by the lower circuit in APAJ beaches.
Resumo:
This study aims to bring reflection on the legitimacy crisis of the Brazilian representative democracy, which results in non-attendance of fundamental rights, regarding legal and social facts in light of the existing constitutional order and seeking solutions in more democratic procedures and in a more humane, critical, democratic and collaborative education. It has been an issue for some time the understanding that the authorities do not meet the basic needs of Brazilian citizens - the only way to make them autonomous and sufficiently able to conduct their lives in a competitive and globalized labor market. Such situation only worsened - as illustrated by the social movements in mid-2013 - when people took to the streets, showing a noticeable dissatisfaction with public services in general, and some other groups presenting specific complaints in those events. To find solutions or at least suggestions for the reflection of the problem found, a current approach to public authorities was necessary attempting to reveal how the constitutional order authorizes their operation and how - in fact - they act. In this endeavour, the legitimacy of power was discussed, involving the analysis of its origin, to whom it belongs and the legitimacy of deficit situations, concluding that it is only justified as it gets more democratic influence, with greater participation of people in its deliberations and decisions, with its plurality and complexity. Research carried out by official institutions was necessary to have evidence of the low level of social development of the country and the nonattendance of minimum basic rights, as well as exposure to various acts and omissions which show that all public authorities do not legitimately represent the people's interests. The competence of the Supreme Court to establish the broader scope of the remuneration policy in the public service received proper attention, presenting itself as an effective means to promote the reduction of the remuneration and structural inequality in public service and contributing to better care of fundamental rights. Also, considerations were made about the Decree 8243/2014, which established the National Policy for Social Participation (NPSP) and the National System of Social Participation (NSSP) and took other measures with the suggestion of its expansion into the legislative and judiciary powers as a way to legitimize the Brazilian democracy, considering its current stage. In conclusion, it is presented the idea expressed by the most influential and modern pedagogical trends for the creation of a participatory, solidary, non-hierarchical and critical culture since the childhood stage. This idea focuses on the resolution of questions addressed to the common good, which considers the complexity and the existing pluralism in society with a view to constant knowledge update. Knowledge update is in turn dynamic and requires such action, instilling - for the future generations - the idea that the creation of a more participatory and collaborative democracy is needed to reduce social inequality as a way to legitimize and promote social welfare, with the implementation of a policy devoted to meet the minimum fundamental rights to ensure dignity to the population.
Resumo:
The time perception is critical for environmental adaptation in humans and other species. The temporal processing, has evolved through different neural systems, each responsible for processing different time scales. Among the most studied scales is that spans the arrangement of seconds to minutes. Evidence suggests that the dorsolateral prefrontal (DLPFC) cortex has relationship with the time perception scale of seconds. However, it is unclear whether the deficit of time perception in patients with brain injuries or even "reversible lesions" caused by transcranial magnetic stimulation (TMS) in this region, whether by disruption of other cognitive processes (such as attention and working memory) or the time perception itself. Studies also link the region of DLPFC in emotional regulation and specifically the judgment and emotional anticipation. Given this, our objective was to study the role of the dorsolateral prefrontal cortex in the time perception intervals of active and emotionally neutral stimuli, from the effects of cortical modulation by transcranial direct current stimulation (tDCS), through the cortical excitation (anodic current), inhibition (cathode current) and control (sham) using the ranges of 4 and 8 seconds. Our results showed that there is an underestimation when the picture was presented by 8 seconds, with the anodic current in the right DLPFC, there is an underestimation and with cathodic current in the left DLPFC, there is an overestimation of the time reproduction with neutral ones. The cathodic current over the left DLPFC leads to an inverse effect of neutral ones, an underestimation of time with negative pictures. Positive or negative pictures improved estimates for 8 second and positive pictures inhibited the effect of tDCS in DLPFC in estimating time to 4 seconds. With this work, we conclude that the DLPFC plays a key role in the o time perception and largely corresponds to the stages of memory and decision on the internal clock model. The left hemisphere participates in the perception of time in both active and emotionally neutral contexts, and we can conclude that the ETCC and an effective method to study the cortical functions in the time perception in terms of cause and effect.
Resumo:
Nicotine administration in humans and rodents enhances memory and attention, and also has a positive effect in Alzheimer's Disease. The Medial Septum / Diagonal Band of Broca complex (MS/DBB) – a main cholinergic system – massively projects to the hippocampus through the fimbria-fornix, and this pathway is called the septohippocampal pathway. It has been demonstrated that the MS/DBB acts directly on the local field potential (LFP) rhythmic organization of the hippocampus, especially in the rhythmogenesis of Theta (4-8Hz) – an oscillation intrinsically linked to hippocampus mnemonic function. In vitro experiments gave evidence that nicotine applied to the MS/DBB generates a local network Theta rhythm within the MS/DBB. Thus, the present study proposes to elucidate the function of nicotine in the MS/DBB on the septo-hippocampal pathway. In vivo experiments compared the effect of MS/DBB microinfusion of saline (n=5) and nicotine (n=8) on Ketamine/Xylazine anaesthetized mice. We observed power spectrum density in the Gamma range (35 to 55 Hz) increasing in both structures (Wilcoxon Rank-Sum test, p=0.038) but with no change in coherence between these structures in the same range (Wilcoxon Rank-Sum test, p=0.60). There was also a decrease in power of the ketamineinduced Delta oscillation (1 to 3 Hz). We also performed in vitro experiments on the effect of nicotine on membrane voltage and action potential. We patch-clamped 22 neurons in current-clamp mode; 12 neurons were responsive to nicotine, half of them increased firing rate and other 6 decreased, and they significantly differed in action potential threshold (-47.3±0.9 mV vs. -41±1.9 mV, respectively, p=0.007) and halfwidth time (1.6±0.08 ms vs. 2±0.12 ms, respectively, p=0.01). Furthermore, we performed another set of in vitro experiments concerning the connectivity of the three major neuronal populations of MS/DBB that use acetylcholine, GABA or glutamate as neurotransmitter. Paired patch-clamp recordings found that glutamatergic and GABAergic neurons realize intra-septal connections that produce sizable currents in MS/DBB postsynaptic neurons. The probability of connectivity between different neuronal populations gave rise to a MS/DBB topology that was implemented in a realistic model, which corroborates that the network is highly sensitive to the generation of Gamma rhythm. Together, the data available in the full set of experiments suggests that nicotine may act as a cognitive enhancer, by inducing gamma oscillation in the local circuitry of the MS/DBB.
Resumo:
The work of Caio Fernando Abreu has a very vast and impressive thematic horizon , which is usually the core of the papers on the work of this author . This paper proposes to understand this characteristic of a more intricate point of view : perceive and analyze how the work of the author builds itself thematically , but mainly textually . I n other words , as the text enacts his own writing . From this it is noticeable how the text of Abreu plays with some senses through textual constructions that do not impose directly sense to the reader . Thus, the research sees in the chosen corpus , the collection Os dragões não conhecem o paraíso ( 2014 ), the neutral as proposed by the French essayist Roland Barthes (2003 a ). This neutral is understood by Barthes as a possibility to suspend the paradigms that constitute the sense, what exactly justifies the noticeable game in the work of Abreu . This game , to Roland Barthes , is precisely the literature. If the paradigm involves transforming the language , and all language expressions, in a way to propagate ideologies , the literature does not escape this fate . In order to escape this fate , you must fight the language internally ; we must play wit h the language . The neutral is the possibility of the game. Thus , the study sought neutral in Caio Fernando Abreu short stories , presenting it and analyzing it through " figures" which, for Barthes , is a way of perceiving the neut ral through texts , but not in a prescriptive manner. It was proposed , in the analysis , then understand the " Subjectivities ", the " Default ", the " Body " and " Disease " , for example, as possibilities of the game . Finally , in many Abreu’s work instances , the neutral is achieved by textual operations that are not in themselves neutral , but which achieve a " neutral effect ", which explains the game , the literature, in the texts of Caio Fernando Abreu .
Resumo:
This work was performing effluent degradation studies by electrochemical treatment. The electrochemical oxidation (EO) hydroquinone (H2Q) was carried out in acid medium, using PbO2 electrode by galvanostatic electrolysis, applying current densities of 10 and 30 mA/cm2 . The concentration of H2Q was monitored by differential pulse voltammetry (DPV). The experimental results showed that the galvanostatic electrolysis process performance significantly depends on the applied current density, achieving removal efficiencies of 100% and 80 % and 10 applying 30 mA/cm2 , respectively. Furthermore, the electroanalytical technique was effective in H2Q be used as a detection method. In order to test the efficiency of PbO2 electrode, the electrochemical treatment was conducted in an actual effluent, leachate from a landfill. The liquid waste leachate (600ml effluent) was treated in a batch electrochemical cell, with or without addition of NaCl by applying 7 mA/cm2 . The efficiency of EO was assessed against the removal of thermo-tolerant coliforms, total organic carbon (TOC), total phosphorus and metals (copper, cobalt, chromium, iron and nickel). These results showed that efficient removal of coliforms was obtained (100%), and was further decrease the concentration of heavy metals by the cathode processes. However, results were not satisfactory TOC, achieving low total removal of dissolved organic load. Because it is considered an effluent complex were developed other tests with this effluent to monitor a larger number of decontamination parameters (Turbidity, Total Solids, Color, Conductivity, Total Organic Carbon (TOC) and metals (barium, chromium, lithium, manganese and Zinc), comparing the efficiency of this type of electrochemical treatment (EO or electrocoagulation) using a flow cell. In this assay was compared to electro streaming. In the case of the OE, Ti/IrO2-TaO5 was used as the anode, however, the electrocoagulation process, aluminum electrodes were used; applying current densities of 10, 20 and 30 mA/cm2 in the presence and absence of NaCl as an electrolyte. The results showed that EO using Ti/IrO2–TaO5 was anode as efficient when Cl- was present in the effluent. In contrast, the electrocoagulation flow reduces the dissolved organic matter in the effluent, under certain experimental conditions.
Resumo:
The article talks about the challenge of the construction of public policies for the child in the age group from 0 to 6 years old in Brazil, in the perspective of the right guarantees. One can presuppose that to comprehend the development of these policies, it is necessary to analyze the historical route of its assistance, possibilities and limits. It is also important to consider the contradictory relationships of power present in society, and its influence in the building of the conception of child and childhood that are very far to be neutral words, so they are policies. In this point of view, this work analyzes the arrangement of the current policies of assistance to children, making clear the shape as they were reorganized by the neo liberal policies and set of instructions of international organizations. The studies show that, instead of public and universal policies, programs and actions are introduced based on the focus in the fight against poverty, made with low costs and questionable quality.
Resumo:
This study seeks to identify how creative environments of musical groups are configured in the Strategy as Practice perspective as theoretical, empirical and conceptual models. It develops within the theoretical framework, discussions on the context of the Creative Economy, Creative Industries, creative environment, organizational paradigm of Creative Economy, music as a creative environment and business, design and dynamics of Strategy as Practice and conjecture about the contextualism and other epistemological currents. The study is shaped as an exploratory and descriptive research, utilizing the qualitative method and being characterized as a Grounded Theory. A total of four musical groups of different styles, markets and areas of operation with over ten years of activity were surveyed. The Grounded Theory and simple observation methods were used for both data collection and analysis. The software ATLAS.ti. was used to help with the analysis. The research shows that the bands perceive the specialized expertise in the virtual social media as a strategic differentiator. It also shows that the groups nourish individuation and the differentiation in their relationship with the individual. Finally, it validates that these organizations get teams involved and value the dynamic design of their routines in strategic decision making, paying attention to a strategic social bias. Strategy and Creative Practice is the main category that emerged from the data. This category is explained through the three aforementioned results. It shows that organizations that are part of the Creative Economy perform simultaneously and dynamically creative and strategic making at both artistic and managerial levels.The theory created is validated by the principles of degree of coherence, functionality, relevance, flexibility, density and integration, and it is inserted in the contextualism principle, which points the knowledge as related to the context in which it is placed and discussed.
Resumo:
Generation systems, using renewable sources, are becoming increasingly popular due to the need for increased use of electricity. Currently, renewables sources have a role to cooperate with conventional generation, due to the system limitation in delivering the required power, the need for reduction of unwanted effects from sources that use fossil fuels (pollution) and the difficulty of building new transmission and/or distribution lines. This cooperation takes place through distributed generation. Therefore, this work proposes a control strategy for the interconnection of a PV (Photovoltaic) system generation distributed with a three-phase power grid through a connection filter the type LCL. The compensation of power quality at point of common coupling (PCC) is performed ensuring that the mains supply or consume only active power and that his currents have low distorcion. Unlike traditional techniques which require schemes for harmonic detection, the technique performs the harmonic compensation without the use of this schemes, controlling the output currents of the system in an indirect way. So that there is effective control of the DC (Direct Current) bus voltage is used the robust controller mode dual DSMPI (Dual-Sliding Mode-Proportional Integral), that behaves as a sliding mode controller SM-PI (Sliding Mode-Proportional Integral) during the transition and like a conventional PI (Proportional Integral) in the steady-state. For control of current is used to repetitive control strategy, which are used double sequence controllers (DSC) tuned to the fundamental component, the fifth and seventh harmonic. The output phase current are aligned with the phase angle of the utility voltage vector obtained from the use of a SRF-PLL (Synchronous Reference Frame Phase-Locked-Loop). In order to obtain the maximum power from the PV array is used a MPPT (Maximum Power Point Tracking) algorithm without the need for adding sensors. Experimental results are presented to demonstrate the effectiveness of the proposed control system.
Resumo:
A obra estuda as principais correntes político-ideológicas existentes no Rio Grande do Norte no período de transição entre o final do Império e os primeiros anos da República. Através de uma exaustiva pesquisa em fontes jornalísticas e documentais, o autor introduz o leitor no universo das ideias e práticas políticas que marcaram a tensa implantação do regime republicano no Brasil e especialmente no Rio Grande do Norte.
Resumo:
With this thesis, we investigate papers produced by candidates to the vestibular 2010 from UFRN related to the (non) taking on of different points of view in the textual zone of the argumentation and counter-argumentation. The candidates had to produce an opinion article about the polemic theme of the security cameras. The corpus of this research contents 100 papers produced by the candidates to the vestibular 2010 from different areas (humans I, humans II, technological I, technological II and biomedical). To this study, we are based on theoretical perspectives from authors of different theories and linguistic fields that dialog among them. In this direction, we follow Bakhtin (1995), Rabatel (2008 a, 2008 b), Guentchéva (1994, 1996, 2011) and Rodrigues, Passeggi e Silva Neto (2010), among others, that are concerned to dialogism, enunciative theories, discuss analyzes, and linguistic of the text. This group of linguistic approach is linked to the Textual Analyze of the Discuss (ADAM, 2011), that conducts analyze of the data of this research. Related to the methodology, we follow the qualitative analyze in an interpretative way. We investigate how the candidate, as a writer, takes on information inserted in his/her paper. With this in mind, this research tries to answer the following questions: (1) How the candidate organizes his/her discuss in respect to the enunciative responsibility? (2) Which linguistic marks conduct to identify the different voices in the texts? (3) How the textual plan is presented in the opinion article? (4) In which part of the textual plan is possible to identify the enunciative responsibility? In this sense, the aims of this study are identify, describe, analyze and interpret the different voices presented in the text and the way the candidate takes on (or not) the different points of view presented in the papers during argumentation and counterargumentation movement. In general, the results reveal that the presence of linguistic marks (connectors, people marks, among others) design the grade of enunciative responsibility of the writer, stimulating his/her involving and taking on enunciative responsibility.
Resumo:
Since long ago that the religious manifestations are considered important items in various social media. In this sense, we are interested in understanding the strong denominational plurality, and the emergence of new movements / events and forms of Christianity in Brazil, which therefore is a reflection of what happens in the rest of the globalized world. Such interest is covered by the assumption that religiosity and social media are built on mutual and interconnected way, which allows us to understand that social cosmology presents itself as a fertile space privileged and to verify the interactions pertaining to the binomial: religion and society. The Protestantism is divided into three main streams: Historical, Pentecostal and Neo-Pentecostal. Each current of Protestantism emerged to adapt to social cosmology of historical ages, from the Reformation to the present day, forming institutions with certain ethical and moral stances. In this sense, it is necessary to research and understand how the historical Protestant, Pentecostal and neo-Pentecostal were implanted in Brazil. From this we believe to be interesting problematize accurately the following: How have the processes of formation of strands / evangelical movements in Brazil? These movements are still holding their "classic robes" or hybreeding their borders? What are the modulations in the religious transit demonstrate that this probable hybridization? If there is, indeed, a hybridization between the Evangelical means, we can put it is provoked only by a logic of "market of symbolic goods of religion" in the world today? Nowadays, we are experiencing a period of change cosmological, from Modern to Postmodern (caosmológic). This last is therefore characterized by secularization, the fracture, the mutilation, the diversity of subjectivities. And thinking about is this "spirit of the times" we take as the main its theoretical references of this study, the Italian philosopher and thinker of postmodernity Gianni Vattimo featuring postmodernity with the cosmology of fragile / pensiero debole Thought and post-metaphysical, that is which enhances the appearance of more plural institutions and non-absolute. To do so, he makes use of the philosophies of German, Nietzsche and Heidegger. Finally, it must be said that this grounded theoretical framework, raise the hypothesis that the Protestantism tends to "injure anymore" by the influence of postmodern social episteme, providing thereby the emergence of a new hybrid framework has not yet nominated and can move between the three major currents of world Protestantism, with features in converged aspects of the same.
Resumo:
Since long ago that the religious manifestations are considered important items in various social media. In this sense, we are interested in understanding the strong denominational plurality, and the emergence of new movements / events and forms of Christianity in Brazil, which therefore is a reflection of what happens in the rest of the globalized world. Such interest is covered by the assumption that religiosity and social media are built on mutual and interconnected way, which allows us to understand that social cosmology presents itself as a fertile space privileged and to verify the interactions pertaining to the binomial: religion and society. The Protestantism is divided into three main streams: Historical, Pentecostal and Neo-Pentecostal. Each current of Protestantism emerged to adapt to social cosmology of historical ages, from the Reformation to the present day, forming institutions with certain ethical and moral stances. In this sense, it is necessary to research and understand how the historical Protestant, Pentecostal and neo-Pentecostal were implanted in Brazil. From this we believe to be interesting problematize accurately the following: How have the processes of formation of strands / evangelical movements in Brazil? These movements are still holding their "classic robes" or hybreeding their borders? What are the modulations in the religious transit demonstrate that this probable hybridization? If there is, indeed, a hybridization between the Evangelical means, we can put it is provoked only by a logic of "market of symbolic goods of religion" in the world today? Nowadays, we are experiencing a period of change cosmological, from Modern to Postmodern (caosmológic). This last is therefore characterized by secularization, the fracture, the mutilation, the diversity of subjectivities. And thinking about is this "spirit of the times" we take as the main its theoretical references of this study, the Italian philosopher and thinker of postmodernity Gianni Vattimo featuring postmodernity with the cosmology of fragile / pensiero debole Thought and post-metaphysical, that is which enhances the appearance of more plural institutions and non-absolute. To do so, he makes use of the philosophies of German, Nietzsche and Heidegger. Finally, it must be said that this grounded theoretical framework, raise the hypothesis that the Protestantism tends to "injure anymore" by the influence of postmodern social episteme, providing thereby the emergence of a new hybrid framework has not yet nominated and can move between the three major currents of world Protestantism, with features in converged aspects of the same.