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Microestrutura e propriedades mecânicas da liga AA6061 processada por deformação plástica severa em temperatura criogênica
(Universidade Federal de São Carlos, 2017-08-08)
Magalhães, Danielle Cristina Camilo
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Kliauga, Andrea Madeira
;
https://lattes.cnpq.br/3527528295399928
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Sordi, Vitor Luiz
;
https://lattes.cnpq.br/8364164402481940
The present work aimed two fronts: to characterize the mechanical behavior of the AA6061 alloy at cryogenic temperature, and to study the microstructural and properties evolution after cryogenic severe plastic deformation. Samples of AA6061 alloy were solution heat-treated and processed by conventional rolling, asymmetric rolling and equal-channel angular pressing (ECAP), both at room temperature and cryogenic temperature. After processing, such samples were treated for precipitation at 25 °C and at 100 °C, for different times. On the cryogenic mechanical behavior it was observed the suppression of the dynamic strain aging, which also allowed the ECAP processing without cracking. Uniform and total elongation and mechanical strength were always higher at -196 °C than at room temperature. The strain-rate sensitivity, despite having low values, becomes positive for cryogenic deformation, directly affecting the deformation capacity. Regardless of the processing route employed, a saturation of the hardness around 125 HV has been seen. The microstructures after cryogenic ECAP were very refined in relation to the starting material (average grain size up to 500 nm). In addition, it was observed a homogeneous strains distribution after cryogenic processing, with detection of several new fine grains from grain boundaries, which suggests recrystallization. The tensile tests results, after cryogenic processing in combination with artificial aging at 100 °C (48 hours), indicated an increase in uniform elongation. Regarding mechanical strength, the highest values were observed for extrusion at room temperature combined with artificial aging. In addition, there was to some static recovery during artificial aging, especially for cryogenic processing, which generates thermodynamically unstable microstructures. The density of dislocations, in fact, decreases with the prolongation of artificial aging time. Thus, the present study was based on a study of the cryogenic mechanical behavior of the AA6061 alloy, as well as the possibility of processing by cryogenic severe deformation.
GromaXy: uma ferramenta para integração do Galaxy com o GROMACS
(Universidade Federal de São Carlos, 2017-08-08)
Souza, Alfredo Guilherme da Silva
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Trevelin, Luis Carlos
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https://lattes.cnpq.br/5082419783043736
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https://lattes.cnpq.br/0459570418915149
Considering the significant advances in biomolecular researches, the raise of various limitations is predicted. Thereby, reinforcing the link between science and technology, by introducing the new and effective development tools which can be used in a variety of scientific studies (i.e. Molecular Dynamics methods for drug discovery), becomes necessary. This method enables the realization of simulations in biomolecular studies in which atoms' behavior can be observed during a specific period of time. In the state of art various researches related to development of tools, whose main goal is facilitating Molecular Dynamics studies, are encountered. The GROMACS is one of these tools that is known as an open-source tool that has been used in lots of research projects. Due to the complexity of manipulating the GROMACS, the current study presents a new tool called GromaXy, which aims at providing a new interaction way with GROMACS, by introducing a new graphical interface which is much more convenient than the GROMACS command line. In addition to providing a new interaction way with GROMACS, the GromaXy also offers an adoptation of Atom Validation, which is another tool that has been developed in one of the previous studies. Atom Validation identifies the absent atoms in protein structure and show the to the user in form of a list. GromaXy was developed using a well-known framework in bioinformatic area called Galaxy. This framework was preferred due to its simple environment, the ability of sharing the work history and the history of realized experiments, enabling the high-level storage of data related to the trajectory of simulation process. The GromaXy was chosen as an adequate name which presents the join of Galaxy and GROMACS.
Visualização, caracterização e manipulação de paredes de domínios em filmes finos ferroelétricos
(Universidade Federal de São Carlos, 2017-08-10)
Gonçalves, André Marino
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Eiras, José Antônio
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https://lattes.cnpq.br/6653223814715498
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https://lattes.cnpq.br/0563057979926309
In this work, conductivity in ferroelectric domain walls, in materials whose domains are insulating, was investigated at the nanoscale using a combination of techniques based on atomic force microscopy. Polycrystalline and epitaxial Pb(Zr,Ti)O3 tetragonal thin films were synthesized by different routes, with crystallization after deposition (ex-situ) and during deposition (in-situ). The manipulation of the domain structures and properties of the walls was explored, from the synthesis parameters, aiming the obtaining, optimization and manipulation of the conductivity in walls of ferroelectric domains. In polycrystalline films, complex domains composed of 180° and 90° walls were obtained. The reorientation of the polarization by the application of localized electric field, using the AFM tip, revealed substantially different responses in thin films with different thicknesses and grain sizes. Through the epitaxial growth path, films oriented in the [001] direction with monodomain structure and, with multidomain structure with walls of 90 °, were obtained by changing the epitaxial strain exerted on the film, using different substrates. With the application of localized electric field using the AFM tip, it was demonstrated the possibility of creation/destruction, with a certain level of control, of both 180° and 90° walls. The investigation of the local conductivity revealed that, in both the epitaxial and the polycrystalline films, the 90° walls are more conductive than the 180° walls, related to the greater deviation of the electroneutrality position, imposed by the mechanical restrictions on the 90° walls. It was also observed that, using oxides, the conductivity is stable, whereas with metal electrodes there is a decay of the current over time, possibly related to the trapping of carriers due to oxygen vacancies accumulated in the film/metal electrode interface. Finally, the processing route was also decisive in the electrical properties. Better electrical responses were obtained in films crystallized during the deposition than in films crystallized after the deposition. The observed differences are possibly related to the quality of the interface obtained by the different routes.
A gestão por competências em Universidades Federais : um estudo comparado na perspectiva do campo CTS
(Universidade Federal de São Carlos, 2017-08-10)
Perseguino, Silvana Aparecida
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Pedro, Wilson José Alves
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https://lattes.cnpq.br/8135701448186851
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https://lattes.cnpq.br/7708875177512113
Considering the social commitment played by the federal universities, as producers of new knowledge, and the training of qualified professionals and researchers able to contribute to the development of the society, this research develop a critical analysis, following the spectrum of the field of studies Science, Technology and Society (STS), regarding the parameters detailed in the Decree no. 5.707, from 2006/02/23, which established the National Policy for Human Resources Development, encouraging the paradigm of competences within the public sector, and some of the implications for the federal universities. The specific objectives are: 1) to draw the panorama regarding implementation of the management by competences model within the federal universities from the perspective of the Human Resources Management area; 2) To develop a comparative study between two institutions located in the State of São Paulo, in order to identify the institutional specificities, structure and parameters adopted by the people management area in its management model; 3) to suggest guidelines for the model of management by competences in universities based on the social commitment approach. The qualitative-quantitative methodology combines exploratory/descriptive and empirical research, following the literature review, survey and case studies, using content analysis to analyze the results. The results seem to demonstrate that the adoption of the management by competences in the context of federal universities is not consolidated and there are challenges to be faced that may contemplate the complexity of the environment of these institutions. It was also possible to identify that the field of STS studies can contribute to construct guidelines that consider the complexity of both, the model and the universe of the federal higher education institutions in general.
A constituição profissional do professor em início de carreira: percepções dos egressos dos cursos de licenciatura da UFSCar- Sorocaba
(Universidade Federal de São Carlos, 2017-08-10)
Dessotti, Elise
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Gama, Renata Prenstteter
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https://lattes.cnpq.br/4153572041829838
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https://lattes.cnpq.br/8821776329203903
The present work has the objective to describe and understand the professional constitution of graduated students from teaching courses of UFSCar campus Sorocaba. The methodology is qualitative and interpretative, it has used as instruments to build the data a survey with the graduated students and semi-structured interviews with graduated students that became teachers in order to deepen the data. To understand the context of the research it has been done a documental analyses of the Political Pedagogical Project, the curricular matrixes and the general and specific curricular guidelines of each course. The first step of the building data was the application of a survey to all the graduated students of the teaching courses (Full time and nocturnal Biology, Geography, Mathematics, Chemistry and Physics) to create and analyze it has been used as categories three moments from teaching formation: initial formation, career beginning and continuous training (PACHECO; FLORES, 1999). The second step of the data building was the interviews with one graduated student from each course and to analyze were used the theoretical bases about teaching formation which involves initial and continuous training (PACHECO; FLORES, 1999; VAILLANT; MARCELO, 2012) the career beginning and its sustainability (HUBERMAN, 1997; MARCELO; VAILLANT, 2012; GUARNIERI, 2005. LIMA, 2006; HARGREAVES, 1998; FULLAN; HARGREAVES, 2000) and about professional identity (HALL, 2015; DUBAR, 2009) The main results highlighted that the graduated students feel secure about the specific contents and acknowledge that the professional constitution is a complex process, that it may gain contribution if university and school establish associations to diminish the distance from the institutions and between the theoretical-academic contents and practical. In relation to the career beginning and its sustainability the graduated students describe difficulties with the responsibilities and the conditions of the teacher work and the confrontation of the “real shock” (HUBERMAN, 1997); despite the difficulties, they keep themselves in the career because they find themselves in the students´ relationship and they like the profession. The professional identity is build along the lived experiences, but, they must deal with an identity crises (HALL, 2015) because the expectations from the scholar community are not the same as their own. They highlight the initial formation has a huge contribution to the career beginning and the professional constitution, but even bigger is the contribution from the school.
Ética e ontologia em Bergson
(Universidade Federal de São Carlos, 2017-08-10)
Vieira, Marcelo Marcos Barbosa
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Silva, Franklin Leopoldo e
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https://lattes.cnpq.br/4705628195902884
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https://lattes.cnpq.br/8316324326130024
L’investigation de la liberté qui inaugure la philosophie de Bergson est, elle aussi, l’origine d’une nouvelle conception sur l'existence. Définie comme source de création, la durée interne de la conscience qui émerge dans l’acte libre constitue l’expérience à partir de laquelle d’autres dimensions de la réalité seront abordées. Nous cherchons, alors, approfondir les rapports entre l’éthique et l’ontologie présents dans la philosophie de la durée, en ayant comme référence les trois niveaux de conscience travaillés par Bergson : conscience humaine, conscience vitale et conscience mystique.
Kierkegaard e o Tractatus
(Universidade Federal de São Carlos, 2017-08-11)
Barros, Wagner de
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Ferraz Neto, Bento Prado de Almeida
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https://lattes.cnpq.br/0084436724293824
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https://lattes.cnpq.br/2571015424053997
This study aims to investigate if the relationships between Kierkegaard and the Tractatus Logico-Philosophicus can be assessed from considerations about the nature of language. That would provide a philosophical justification for Wittgenstein’s claim that "Kierkegaard is the deepest thinker of the last century", as an alternative to the view adopted by some scholars that the common point between the two authors is the split between the sphere of values and the sphere of facts. It would also be possible to establish a link between the reflections of the Danish philosopher and Wittgenstein’s approach to ethics in the Tractatus; this is a point that was acknowledged by scholars but remains unclear.
Função colinérgica do núcleo do trato solitário comissural nas respostas cardiorrespiratórias à hipóxia e hipercapnia
(Universidade Federal de São Carlos, 2017-08-11)
Furuya, Werner Issao
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Zoccal, Daniel Breseghello
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https://lattes.cnpq.br/1958567557189244
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Colombari, Débora Simões de Almeida
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https://lattes.cnpq.br/1684467594359403
The nucleus of the solitary tract (NTS) is the primary site of visceral afferents, such as baroreceptors and arterial chemoreceptors. Recent data from our laboratory have shown that the microinjection of acetylcholine (ACh) into the commissural moiety of the NTS (cNTS) of decorticated arterially-perfused in situ preparations of male juvenile rats did not change the sympathetic nerve activity (SNA), but increased the phrenic nerve activity (PNA). Furthermore, we demonstrated that the ACh-induced responses in cNTS involve the activation of both nicotinic and muscarinic receptors. However, nicotinic receptors seem to play a more relevant role in the control of breathing, especially considering that such receptor antagonism promotes a decrease in the KCN- activated peripheral chemoreflex tachypneic response. However, the effects of specific nicotinic and muscarinic agonists in the cNTS on respiratory and sympathetic responses have not been studied yet. Once established the involvement of nicotinic receptors in the cNTS on peripheral chemoreflex ventilatory responses activated by cytotoxic hypoxia (KCN), we also evaluated the involvement of the cholinergic system in the cNTS on respiratory and sympathetic responses induced by hypercapnia or 24 h sustained hypoxia. Therefore, this project proposed to study the effects of selective activation of distinct cholinergic receptors in the cNTS on respiratory and sympathetic activities and the role of the cholinergic system in cNTS on sympathetic and respiratory activities reflex changes in response to hypercapnia or sustained hypoxia. We observed that the injection of both nicotinic and muscarinic agonists in the cNTS induces an increase in SNA and changes in the respiratory modulation pattern. The nicotinic agonist induces a decrease in respiratory frequency, as well as the blockade of the enzyme acetylcholinesterase. It was also observed that the cholinergic agonists promote an increase in the amplitude and duration of the pre-inspiratory (pre-I) period of the hypoglossal nerve and also increased the amplitude of the vagus nerve. When it comes on the protocols involving hypoxia, we observed that the cholinergic antagonists injected into the cNTS of rats previously exposed to hypoxia promoted a decrease in sympathetic activity, increased respiratory frequency, decreased hypoglossal nerve amplitude, and decreased post-inspiratory peak amplitude of the vagus nerve, but only the muscarinic antagonist decreased phrenic nerve amplitude and hypoxia-induced hypoglossal nerve pre-I increase. Regarding to the experiments with hypercapnia, we verified that the nicotinic antagonist in the cNTS inhibited the hypercapnia-induced increase in pre-I of the hypoglossal nerve. In addition, the nicotinic antagonist injected into the cNTS also potentiated the recruitment of late-E activity from the abdominal nerve. Taken together, the responses observed with the cholinergic agonists and injected into the cNTS, as well as the antagonists upon hypoxia, suggest the involvement of cholinergic pathways in the cNTS in the modulation of sympathetic and respiratory responses to sustained hypoxia. On the other hand, it seems that only nicotinic receptors in the cNTS are involved in hypercapnia-induced increase in pre-inspiratory activity and active expiration.
Análise e subjetividade : a gênese do "eu" no primeiro Wittgenstein
(Universidade Federal de São Carlos, 2017-08-11)
Michetti, Gustavo Gueraldini
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Ferraz Neto, Bento Prado de Almeida
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https://lattes.cnpq.br/0084436724293824
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https://lattes.cnpq.br/3135514929921903
This dissertation aims to understand the importance of the subject to the philosophy of the first Wittgenstein. Part of the thesis that João Vergílio Cuter develops in his article "Por que o Tractatus necessita de um sujeito transcendental?" Cuter clarifies that, in the Tractatus, the subject is characterized as a logical necessity, responsible for naming and operating on the meaning of a proposition. The purpose of this dissertation is to examine, in the texts that precede the work of 1921, the genesis of this subject absolutely necessary for the constitution of the propositional meaning. To that end, I examine how the concept of analysis is closely linked to the concept of proposition in the years 1913 and 1914, in Notes on Logic and Notes dictated to Moore. I analyse how, in the Notebooks (1914-1916), this concept constitutes a problem for the autonomy of logic and for the task of philosophy. Later, in the 1915 and 1916 notes, it is noted that the "I" is closely linked to the resolution of this problem. With this examination, it is possible to recognize that the notion of subject is fundamental for the resolution of the questions present in the philosophical path of the first Wittgenstein and, therefore, it is possible to establish the genesis of this notion for the Tractatus.
Seleção de modelos multiníveis para dados de avaliação educacional
(Universidade Federal de São Carlos, 2017-08-11)
Coelho, Fabiano Rodrigues
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Novelli, Cibele Maria Russo
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https://lattes.cnpq.br/1011098065426388
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https://lattes.cnpq.br/1142248575230930
When a dataset contains a hierarchical data structure, a possible approach is the multilevel regression modelling, which is justified by the significative amout of the data variability that can be explained by macro level processes. In this work, a selection of multilevel regression models for educational data is developed. This analysis is divided into two parts: variable selection and model selection. The latter is subdivided into two categories: classical and Bayesian modeling. Traditional criteria for model selection such as Lasso, AIC, BIC, and WAIC, among others are used in this study as an attempt to identify the factors influencing ninth grade students’ performance in Mathematics of elementary education in the State of São Paulo. Likewise, an investigation was conducted to evaluate the performance of each variable selection criteria and model selection methods applied to fitted models that will be mentioned throughout this work. It was possible to conclude that, under the frequentist approach, BIC is the most efficient, whereas under the bayesian approach, WAIC presented better results. Using Lasso under the frequentist approach, a decrease of 34% on the number of predictors was observed. Finally, we identified that the performance in Mathematics of students in the ninth year of elementary school in the state of São Paulo is most influenced by the following covariates: mother’s educational level, frequency of book reading, time spent with recreation in classroom, the fact of liking Math, school global performance in Mathematics, performance in Portuguese, school administrative dependence, gender, father’s educational degree, failures and age-grade distortion.
Friction riveting of aluminium alloy 6056-T6 with short-glass-fiber-reinforced polyamide 6 composite
(Universidade Federal de São Carlos, 2017-08-11)
Proença, Bruno Cordeiro de
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Amancio Filho, Sergio de Traglia
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https://lattes.cnpq.br/7609614295379921
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Canto, Leonardo Bresciani
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https://lattes.cnpq.br/7287108960864123
Friction Riveting (FricRiveting) is a relatively new joining technique for metal-polymer hybrid structures. This master thesis was carried out to investigate the FricRiveting process for polyamide 6 reinforced with 30 wt% short glass fiber (PA6-30GF) and aluminum alloy 6056-T6. These materials were selected because of their current joint use in automotive structures. AA6056-T6/PA6-30GF friction-riveted joints were successfully produced. Peak temperatures monitored for the process achieved between 323 °C and 399 °C leading the plastic deformation and thus anchoring of the rivet. The metallic rivet had its microstructure changed during the process, with dynamic recovery and recrystallization being observed in the anchoring zone. Microhardness in the metallic rivet decreased by 40 % of the base material hardness in the anchoring zone, due to a possible dissolution of the precipitates in the aluminum matrix and dynamic recovery and recrystallization. Polyamide 6 degradation was investigated by viscosity measurements and ATR/FT-IR, the joint with the highest level of degradation showed a reduction of 19 % on viscosity average molecular weight and an increase of 2.4 % of the carbonyl index in relation to the base material. Despite this reduction of properties, the friction-riveted joints had a good mechanical performance under tensile loading. Two joining conditions fractured through the metallic rivet outside the composite plate, achieving 92 % of the ultimate tensile strength of the metallic rivet. The influence of the process parameters on the process temperature, viscosity average molecular weight and ultimate tensile force were studied through Box-Behnken Design of experiment, response surface methodology and analysis of variance. Regression equations for these responses were estimated and validated, and an optimized condition was selected. Post joining heat treatment was performed on the optimized joining condition, resulting in an increase of the joint ultimate tensile force up to 99 % of the metallic rivet ultimate tensile force. The durability of the optimized joint was evaluated through natural weathering. An expected negative effect of weathering on the joint ultimate tensile force was observed, strength decrease of 8.4 % after 6 months and 15.5 % after 12 months of exposure.
A perspectiva da atividade do encanador: o caso do trabalho de manutenção no serviço público de saneamento básico na região metropolitana de Belém
(Universidade Federal de São Carlos, 2017-08-11)
Moreira Neto, Lauro de Souza
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Menegon, Nilton Luiz
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https://lattes.cnpq.br/5461487552981919
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https://lattes.cnpq.br/2266283813589742
This current research had the objective of investigating the plumber's activity in the water supply service, which is a production system in which maintenance activities are essential to guarantee an important public service from the public health point of view. The waste of water also creates some negative points from the economic and environmental point of view. The workers who are involved in this activity face some ergonomics constraints in the service execution, which consequences reflect on sickness and accidents. Besides economic, environmental and work aspects, the study of these activities has an academic relevance. The case study was developed with the plumbers from the business units of a basic sanitation company that supplies almost the entire state of Pará, limiting the research only in the Metropolitan Region of Belém on the situation of leak removals in pipelines of water distribution network. Therefore, the aims of this research were to know, describe and explain, from the perspective of the activity, the work of plumbers and their forms of regulation that allow the development of the activity. Moreover, based on the understanding of the actual work, present knowledge mainly of hydraulic and some practical actions that can be useful for the improvement of the management services of the water supply. As the main guiding principle of the methodology, the Ergonomics Work Analysis (EWA) method was applied and some technical characteristics of EWA that depend on each studied situation, and which were used on the data collection, producing one synergy among the researcher and the reality of the work conditions. The research results indicated the necessity to understand how the plumbers manage the evidenced variability in the work situations, through the work schedules adaptation, reduction of muscular effort, and the organization and planning of tasks, specifically of appropriate ergonomics conditions. Knowledge management happens in the development of specific skills and abilities through the regulation of operative modes that integrate the characteristics of the means of production of the work environment, the real state of machines and equipment and the norms of the organization.
Desenvolvimentos de uma genealogia da governamentalidade : a noção de parresia entre a ética e a política
(Universidade Federal de São Carlos, 2017-08-11)
Santos, Alexandre Gomes dos
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Silva, Franklin Leopoldo e
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https://lattes.cnpq.br/4705628195902884
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https://lattes.cnpq.br/3454160802382594
Our aim with the present research is a "genealogy of governmentality" based on the investigations undertaken by Michel Foucault in the last years of the Collège de France, when notions of "spirituality", "ascesis" and "parresía" are used to articulate politics and ethics around the government of self and others, tracing the development of the "self-arts," elements of a Greek and Roman ethos, for governing arts of self and others, this through the logical chain "relations of power / governmentality / government of self and others / relation of self to you ". In addition, to point out the ethical consequences that such genealogy brings to our present, especially regarding the theme "freedom" as a possible thematic field for which we are taken from the Foucaultian studies around the aesthetics of existence.
Teoria dos conjuntos fuzzy: da simulação ao letramento para alunos do ensino médio
(Universidade Federal de São Carlos, 2017-08-14)
Sant'Anna, Camila dos Santos
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Peixoto, Magda da Silva
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https://lattes.cnpq.br/0413910306376054
In this work we present a research carried out in the classroom with the objective of treating subjective questions through the Fuzzy Logic with students of the third year of high school. We begin with the study of the basic concepts of Fuzzy Set Theory and systems based on fuzzy rules. Then, aiming at an application, we developed a fuzzy system to evaluate the risk of an individual developing type 2diabetes, from risk factors. Finally, we propose a didactic sequence to the students, through a questionnaire and a lecture given by the author. The results of the research are presented and, if on the one hand they indicate the difficulty of the students with the fuzzy reasoning, on the other hand, demonstrated the interest and the role of Logica Fuzzy, and therefore, of Mathematics in solving problems of our daily life.
Arcano 17, de André Breton : magia e transcendência
(Universidade Federal de São Carlos, 2017-08-14)
Ornelas, Fernanda Taís
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Santos, Alcides Cardoso dos
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https://lattes.cnpq.br/1331980025109350
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https://lattes.cnpq.br/0231511263478065
The present study analyses, through an exam of the surrealist thought and its magic, esoteric and philosophic bias, the presence of magic, esotericism and transcendence in André Breton‟s Arcanum 17, wrote in 1944. To this regard, this study is based on the main ideas and evolution of the French movement throughout the years, exposed by authors such as Maurice Nadeau (2008), Marguerite Bonnet (1988), Jacqueline Chénieux-Gendron (1992) and Octavio Paz (2001) to examine the presence of the Hermeticism, Alchemy and Kabbalah, the three main influences of Surrealism regarding the esoteric tradition, highlighted by critics such as Octavio Paz (2001), Maria Lúcia Dal Farra (2008), Claudio Willer (2008) e Michel Carrouges (1950). However it is less influential, the importance of Georg Wilhelm Friedrich Hegel‟s absolute idealism will also be analyzed based on Anna Balakian‟s (1986) and Marguerite Bonnet‟s (1992) studies. Finally, this study also draws on the symbolic analysis of the elements of the text, grounded on Jean Chevalier‟s and Alain Gheerbrant‟s (2014) work.
Educação não-formal e divulgação de astronomia no Brasil : atores e dinâmica da área na perspectiva da Complexidade
(Universidade Federal de São Carlos, 2017-08-14)
Marques, Joana Brás Varanda
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Freitas, Denise de
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https://lattes.cnpq.br/3330976062026878
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https://lattes.cnpq.br/6595009955921694
This research focuses on non-formal education and dissemination of astronomy in the Brazilian context. In previous works, we have already investigated this theme and obtained, through a Delphi study, an overview of the main problems of the area and some of the possible solutions for them, according to the opinion of a representative set of specialists. The present research has as it main objective the construction of a portrait of the non-formal education of astronomy in Brazil having as theoretical and methodological basis the theory of complexity. This foundation allows us to have a multidimensional view of this theme, to perceive its structures, but also its relations, and to identify patterns, contradictions and complementarities. We used, as data sources, the responses given to the previous Delphi study by the 34 specialists who participated in this study until the end. Through content analysis, we developed two categorizations of the experts' opinions on systemic networks - one thematic and the other complex. The thematic systemic network allows us to describe the area in terms of the following categories: disseminators, public, offer, research, working conditions, financing and relation with formal education. The complex systemic network allows us to look at the area as a system and to analyze the structures, functions, flows and processes involved, as well as different temporal and scalar levels in which the system evolves. In addition to the description and understanding of the area that can be obtained using these categorizations, we also sought, through statistical techniques of cluster analysis, to investigate the existence of patterns and response profiles that allow for a clearer understanding of the different dynamics and realities that make up this heterogeneous area. This analysis was based on the results of the systemic networks together with the characterization data of the specialists (age, years of experience, area of action, etc.). We contend that this more detailed study is of great interest to the area of non-formal education and dissemination of Astronomy in Brazil, because it clarifies the area based on a deep self- reflection. This study presents a contribution to the area of non-formal education and dissemination of astronomy in Brazil, because it has as result the clarification of a profound and unprecedented reflection that the area has done on itself, through its expert members.
Propriedades estruturais e eletrônicas de nanopartículas de Cu modificam a estrutura superficial do cobre e influenciam na atividade catalítica para a reação deslocamento gás água
(Universidade Federal de São Carlos, 2017-08-16)
Caldas, Paula Cristina de Paula
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Bueno, José Maria Corrêa
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https://lattes.cnpq.br/0157452280626031
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https://lattes.cnpq.br/3466253594165485
The Cu catalysts activity is modified by reducible supports, such as cerium and praseodymium oxides. The interaction of these oxides with Cu nanoparticles prevent agglomeration and generate active interface sites. The relationship between structure and reaction velocity have been calculated from model catalysts that have properties very far from a real catalyst. One of the great challenges is the understanding of ceria and praseodymia effects on the modification of the properties of copper catalytic sites. The activity - structure relationship during the water gas reaction for supported copper catalysts in interaction with cerium or praseodymium oxides or not was investigated on this study. Through in situ studies, it was found that for the Cu/Al2O3 catalysts the growth of the metal particle, caused by the increase of the Cu content supported in the alumina, led to a decrease in the oxygen coating degree. Which, in turn, generated an increase on the surface electron density of the particle resulting in the elongation of the Cu-O surface bonding distance. When different ceria or praseodymia contents were added to the Cu/Al2O3 catalysts did not cause significant changes in particle size and the oxidation state of copper. However, the oxide-metal interaction resulted in an increase on the surface electron density of the copper particle causing an increase in the Cu-O bond distance over the non-promoted catalysts. A linear correlation between Cu-O binding distance and catalytic activity for WGSR is observed. Therefore, Cu-O bonding distance reflects the electronic properties and activity of copper sites.
A financeirização do varejo nacional: um estudo multicasos do segmento de vestuário, calçados e acessórios
(Universidade Federal de São Carlos, 2017-08-16)
Costa, Eliane Aparecida
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Saltorato, Patrícia
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https://lattes.cnpq.br/4086015205835355
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https://lattes.cnpq.br/4246880831905518
This paper aims to explore the advance of the diffusion of the financial logic on the national clothing retail in the promotion of consumer credit in Brazil. In this sense, it looks to verify how this advance is configured in a new organizational arrangement that is signed by the formation of partnerships between the financial institutions and the retail companies, as well as to analyze the administrative strategy to manage this new model, in view of its Social and labor implications. We analyzed eight companies in the national retail clothing sector that have a strong expression in consumption in Brazil, from 2008 to 2016. The companies of this sampling are Marisa, Renner, Riachuelo, Pernambucanas, Cia. Hering, Arezzo & Co, Restoque Commerce and Garment Apparel and Grazziotin Group, which previously had the commercial object of trading merchandise and today deal with consolidated variables in the financial Market. In this work, it is analyzed how the mergers and acquisitions movements involving financial institutions and retail companies are shaping the domestic market, and also how organizational models are managed after the adoption of partnerships with financial institutions and which Impacts of the expansion of this model on labor relations. The results obtained point to a better understanding of the need to adapt to the process, which requires a gradual change in the current organizational structure and consequent prevention of damages related to labor issues, values added to shareholders or positions of CEOs, obliged to increase a series of variables that result in change in the segment. These factors exemplify the materialization of financialization strategies among the largest national apparel retailers, and also show how the banking process is affecting the profile of the commercial model of the national retail sector.
Propriedades físicas de modelos integráveis
(Universidade Federal de São Carlos, 2017-08-16)
Tavares, Thiago Silva
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Ribeiro, Giuliano Augustus Pavan
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https://lattes.cnpq.br/7955854896355856
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https://lattes.cnpq.br/0662651860802736
In this thesis we tackled two di erent problems of quantum integrability. We derived nite sets of non-linear integral equations to describe physical properties of quantum chains invariant under the super-algebras su(2|1) and osp(1|2); and we also studied the in uence of boundary conditions on the bulk properties of the six-vertex model. The su(2|1) invariant model is a multi-chain generalization of the super-symmetric t-J model. Using the quantum transfer matrix method we obtained the phase diagram. For the osp(1|2) invariant model we could also rewrite the Hamiltonian in the language of itinerant fermions interacting through exchange, although the Hamiltonian itself is not hermitian, which corresponds to a non-unitary eld theory. We analytically computed the (e ective) central charge of this theory, corroborating numerical results of the literature. These results point towards the possibility of generalization of such non linear integral equations for models of di erent symmetries. Concerning the problem of the in uence of boundary conditions on the six-vertex model, we showed the existence of in nitely many boundaries whose intensive properties disagree with the standard periodic boundary condition SPBC = 32 ln(43). We also proved that by a suitable choice of boundary conditionsany entropy value in the interval [0, 12 ln(3324)] is accessible. We conjectured that the sameis true for the interval [ 1 2 ln(3324), SPBC]. The number of configurations of the six-vertex model with fixed boundary condition amounts to the enumeration problem of generalized alternating sign matrices.
O Programa de Aquisição de Alimentos (PAA) no acampamento Elizabeth Teixeira Limeira-SP: acesso, possibilidades e limitações.
(Universidade Federal de São Carlos, 2017-08-17)
Jimenez Fernandes, Karla Elizabeth Gil
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Esquerdo, Vanilde
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https://lattes.cnpq.br/9535960068552016
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Bergamasco, Sonia Maria Pessoa Pereira
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https://lattes.cnpq.br/8863899187043019
Food security has been a constant concern in the world since the mid-twentieth century, manifested by world leaders in the post-war period and materialized in the holding of the United Nations Conference on Agriculture and Food in the creation of the United Nations Food and Agriculture Organization ( FAO) in October 1945. Food and nutritional security has emerged as a matter of great importance and interest, as it is the means that seeks to guarantee the right to food for people and individuals, with an emphasis on the most vulnerable groups. To improve the efficiency of Food and Nutrition Security, it is necessary to create opportunities for follow-up, monitoring and evaluation of public policies that allow to guarantee impacts at their levels. This is not possible without the participation of government agencies, civil society, private sector and international cooperation in the whole process from conception to evaluation. . The PAA is a component program of a set of public policies related to the fight against hunger and poverty. Its objective is to enable improvements in the socioeconomic indicators of farmers' families, thus helping to improve their quality of life. It is concluded that there is still much to improve the PAA program at the Elizabeth Teixeira camp. There are many shortcomings that make the PAA program not have the impact it should have.