Browsing by Issue Date, starting with "2018-03-20"

Filter results by year or month

Now showing 1 - 20 of 13189

Um estudo das práticas de disseminação de informação de contratos administrativos nos portais eletrônicos das universidades federais da região sudeste
(Universidade Federal de São Carlos, 2018-03-20)
Santos, Lincoln Kennedy dos
;
Ferraz, Maria Cristina Comunian
;
https://lattes.cnpq.br/2893153253924855
;
https://lattes.cnpq.br/7543735545412818
Social participation is fundamental to the control of state action, ensuring transparency to acts of Public Administration. Fiscal transparency is established for in Complementary Law 101/2000, ensuring transparency as a mean of control and inspection. The 12.527/2011 Law institutes as a fundamental principle that access to public information is the rule and secrecy the exception. Due to the importance of this theme, considering that currently the sharing of information occurs through the internet, this research aims to clarify the dissemination practices of information on administrative contracts in the portals of the federal universities of the Southeast region, which promote the strengthening of participation of the citizen and community. It seeks practices that go beyond the legal requirement, highlighting the best characteristics that portals must present for the availability and access to administrative contracts, emphasizing the importance of the availability of complementary information relating to contracts required for comparisons and various analyzes. In this exploratory and descriptive research, the content analysis method with the creation of a form for data collection is used to increase the possibility of discoveries during the research. The public administration is contextualized by means of theoretical reference, focusing on publicity and transparency of administrative contracts, on the structure of government portals and the availability of information relating to administrative contracts. The laws relating to administrative contracts, fiscal responsibility, corruption against public administration and access to information are presented. The results provide a scenario of how publicity of information on administrative contracts is being done in the portals of the studied universities, allowing the possibility of improvement in the method of availability and access of this information. Finally, in this process of public management, information management and public transparency, despite advances in the intention of transparency of public acts, it is understood that much must be done for efficiency to be achieved. It is considered fundamentally, as defined by the Access to Information Law, 12,527/2011 Law, that the Public Administration has to be proactive in availability of information regardless of requests.
Os bastidores da educação primária: criação e expansão das escolas isoladas rurais em municípios do interior paulista (1889 –1921)
(Universidade Federal de São Carlos, 2018-03-20)
Jesus, Adriana do Carmo de
;
Bezerra, Maria Cristina dos Santos
;
https://lattes.cnpq.br/1095065753077001
;
https://lattes.cnpq.br/2373073981672723
This work has as main objective to deal with the creation and expansion of isolated schools in the interior of São Paulo between the years 1889 to 1920 – the first 31 years of republic. The isolated schools were unidocent elementary education institutions that served at the same time and in the same space students of different ages and levels of knowledge. We understand that it was the economic development of the state of São Paulo started in the mid-nineteenth century - with the coffee-based agricultural expansion and accompanied by a railway network that linked cities and attracted a large population contingent – which made possible the emergence of a dynamic center in southeastern Brazil, especially in what we know today as Rio de Janeiro, Minas Gerais and São Paulo states, as well as the expansion of public schools in inland municipalities in the first decades of the 20th century. From this perspective, this period can be understood as a "watershed" in the organization of the free, secular and compulsory public education system. In these decades, schooling was, above all, part of a political program to solve Brazilian problems, so that it incorporated large sections of the population into the civilizing process. Political participation was linked not only to census voting but, to the process of schooling, however, this process already in the early years of the Republic did not mean a good school for all, especially in the state of São Paulo and to understand the expansion of elementary public schooling, it is necessary to understand the history of Brazilian education in the republican period, also understanding that the diffusion of the school groups was not established in a homogeneous, natural and linear way, as if we had first the isolated school that became schools reunited and sometime later the leaders realized that it was viable the transformation of these schools reunited in school group.
Indicadores da participação feminina na comunidade docente da Universidade Federal de São Carlos em 2017
(Universidade Federal de São Carlos, 2018-03-20)
Minotto, Ana Aparecida Pires
;
Rigolin, Camila Carneiro Dias
;
https://lattes.cnpq.br/2388584081961836
To know the female situation and the gender relations in the scientific world contributes to the elaboration of strategies of shifts in the institutional structure of science. These changes are part of the search for gender equity in the academic setting. It is not just about increasing the participation of women in science and technology by increasing and stimulating access. It is necessary to recognize and unveil the sexist biases that are inherent to institutionality and are present among the lines of scientific culture, in search of the transformations of gender relations in science and technology, with the intent of keeping women in the academy and aiming at breaking the "ceiling glass". Thus, this descriptive and exploratory work aims to construct indicators of the participation of female professors in science and technology in a public institution of higher education and research and is guided by the following question of research: how to configure the distribution of female scholars in the scientific community of UFSCar in areas of knowledge, hierarchy and scientific leadership in the year 2017? We sought to identify indicators of female participation in the teaching community of the Federal University of São Carlos (UFSCar), referring to the year 2017. Documentary sources such as institutional reports, the Lattes Platform and the Directory of Research Groups of the National Council of Scientific and Technological Development (CNPq) were used in the research. The data portrays the participation of women in the teaching staff, the leadership of research groups, in the approval of research productivity grants from CNPq and in the exercise of trust functions. In order to analyze these data, the theoretical framework addresses the literature on gender and science derived mainly from Social Studies of Science.
Relações entre habilidades metacognitivas, habilidades sociais, planos e saúde mental em cuidadores familiares que assistem idosos dependentes
(Universidade Federal de São Carlos, 2018-03-20)
Isaac, Letícia
;
Barham, Elizabeth Joan
;
https://lattes.cnpq.br/9868595523538592
;
https://lattes.cnpq.br/0252851723116971
Many people who assist their dependent elderly relatives have trouble finding the time and energy for activities that are important for their mental health. In this study, a model was proposed to indicate skills that may affect a caregiver’s ability to establish plans that are important to their mental health and well-being, such as metacognitive skills (monitoring and self-regulation), social skills, and the ability to establish viable goals. Interviews were conducted with 30 caregivers, including 28 women and 2 men, with an average age of 57.5 years (SD = 11.09), concentrated in socioeconomic classes B and C, and who resided in the interior of the state of São Paulo. The participants responded to the following instruments: open questions about planning adjustments in care routines, Social Skills Inventory for Caregivers of Elderly Family Members, a Life Plans register, Zarit Burden Interview, and Beck Depression Inventory II. The results showed that caregivers own socioemotional wellbeing and the elderly person’s health were constantly monitored by the caregivers. To handle demands related to the caregiving context, about two-thirds of the caregivers enlisted the help of family members, friends, and professionals. However, half of the caregivers reported managing new or unexpected demands on their own, and this was often their only strategy. With respect to their social skills, the caregivers reported having a good repertory of skills, with their greatest strength being affective expression. More than half of the participants reported light to moderate perceptions of burden and depressive symptoms. In terms of their plans for the future, the caregivers mentioned more plans related to health and leisure activities. Eight categories were developed to capture differences in the quality of the plans. Plans for the maintenance of valued activities were most frequently mentioned, followed by plans that were classified as vague, and then viable plans. Scores for each factor of the social skills, burden and depressive symptoms measures were then correlated with the number of plans in each of the eight categories. Assertive Communication skills were positively related with the number of Viable Plans (r = .38, p = .04), the number of Vague Plans was positively related with perceptions of burden involving Emotional Tensions (rho = .39, p =. 03), while the number of Plans being Implemented was negatively related to Emotional Strains (rho = -.41, p = .02). Thus, in consonance with the proposed model, in this study, there is some initial evidence that metacognitive abilities and social skills may be important in the process of constructing viable plans for the future, which, in turn, seem to affect caregivers’ mental health. If researchers continue to find evidence in support of this model, these concepts can be used to develop and evaluate interventions to help caregivers make better use of skills that can improve their ability to construct viable plans, which may contribute to reducing perceptions of burden and the experience of depressive symptoms.
Meta-avaliação das políticas de cotas : um estudo de processos nas universidades estaduais paranaenses
(Universidade Federal de São Carlos, 2018-03-21)
Souza, Andreliza Cristina
;
Rothen, José Carlos
;
https://lattes.cnpq.br/1942510389127549
;
https://lattes.cnpq.br/3700985924661176
This thesis have accomplished a meta-evaluation of quota policies in Paraná’s state public universities. The general objective was to analyze the evaluations processes regarding the similarities and differences, potentialities and limits, as well as to verify which strategies and procedures were used more frequently for this kind of evaluation. The thesis is that the evaluation of quota policies has fragility in reason it is not carried out according to the theoretical and methodological foundations of the evaluation due to the political tension around the quotas. In order to base this research, discussions contemplated philosophical and epistemological assumptions of evaluating as a research field (AFONSO, 2009; FERNANDES, 2010; DIAS SOBRINHO, 2002; 2003a); definitions and interfaces between state and public policies were presented, and a brief discussion about the state as a provider versus a governor; the concepts of focal policies and affirmative actions were presented; and the influence of Durban Conference and its unfolding on expanding access to higher education. The instruments for collecting data were: documents – quota policy’s performance and evaluation processes; and interviews – actors enrolled in this context, systematized with content analysis method. For policy analysis was used the polity cycle (BOWE; BALL; GOLD, 1992; BALL; MAGUIRE; BRAUN, 2016), and has shown that: a) institutions analyzed had similar motives for vacancy reservations: institutional and social influences and the democratization of public schools; b) national debates about affirmative actions had great influence over these institutions; c) racism, conservative positions, resistance from institutions and/or actors and the reasoning that implies quality losses has made impossible to install racial quotas in three of the analyzed institutions; d) each institutions has defined their own model for policies; e) in some cases, the way the text was written limited access to black students or students from public schools. The meta-evaluation (SCRIVEN 2009; STUFFLEBEAM 1981; 2001; 2011; WORTHEN; SANDERS; FITZPATRICK, 2004) revealed that: a) two institutions did not carry out evaluation/monitoring, although there was a forecast of quota’s policy evaluation; b) these were evaluations of processes, of the ex-post kind, made by members of the institutions; c) the evaluators had a partial position in the realization of the evaluations; d) this bias, in the sense of confirmation of the policy, favored the debate on quotas, as well as its permanence as an access policy; e) the propensity of some actors to evaluate the quota policy in favor of their legitimation may have concealed relevant factors that have affected the effectiveness of this affirmative action; f) evaluations attended the criteria of precision, data importance, relevance and dissemination; g) criteria of reliability, credibility and cost x efficiency were not met. It was concluded that the evaluation process was feared by the institutions, specially by the actors involved in the approbation of policies, not effectively occurring for fear that the evaluation were be used as an instrument for denying quotas and reduce access in higher education. It is necessary to discuss quotas. Amongst the considerations stands out need to further discussions of quotas, qualify evaluation processes, to form technical staff, to develop methods and strategies suitable for different situations and knowledge production about evaluation as an epistemological field.
Desenvolvimento de novas ligas quasicristalinas à base de alumínio
(Universidade Federal de São Carlos, 2018-03-21)
Wolf, Witor
;
Bolfarini, Claudemiro
;
https://lattes.cnpq.br/9231627080617037
;
Botta Filho, Walter José
;
https://lattes.cnpq.br/8956458007749112
Quasicrystalline phases are known for presenting particular crystallographic characteristics that make them a separate group of solid materials. Most of these phases are Al-based and they form in compositions near complex intermetallic phases. Many of these intermetallic phases are called quasicrystalline approximants due to the similarity of their atomic structures. This work presents the development of quasicrystal-forming alloys, which have low friction coefficient and low surface adhesion energy, aiming to discover new quasicrystal compositions. Fabrication of quasicrystalline alloys was performed by starting from known quasicrystal compositions and then modifying them by the addition of elements that could potentially enhance corrosion resistance such as Cr and Ni. Arc melting and melt spinning were used in the fabrication of these alloys. The metallic system that showed to be more suitable for obtaining the quasicrystalline phase, Al-Cu-Fe-Cr, was selected for a detailed study using combinatorial approaches for fabrication and characterization of alloys so the composition range where the quasicrystal forms in this system could be found. This strategy makes use of advanced techniques such as magnetron co-sputtering and high-throughput X-ray diffraction and energy dispersive X-ray spectroscopy. One of the quasicrystalline alloys was selected and fabricated by atomization, followed to thermal spraying by High Velocity Oxygen Fuel to manufacture coatings, which were studied regarding phase formation and stability as well as wear behavior and surface adhesion energy. This coating fabricated with a new composition showed the formation of quasicrystalline phases as expected. Surface properties such as low coefficient of friction and low surface adhesion energy were observed in the samples.
Vitrocerâmicas condutoras de íon lítio com estrutura do tipo Nasicon baseadas no sistema Li1+X CrX (GeY Ti1-Y)2-X (PO4)3
(Universidade Federal de São Carlos, 2018-03-22)
Nuernberg, Rafael Bianchini
;
Pradel, Annie
;
Rodrigues, Ana Candida Martins
;
https://lattes.cnpq.br/4499231813051400
;
https://lattes.cnpq.br/6261224924264220
The primary goal of this work is to develop a new NASICON-structured glass-ceramic with high Li-ion conductivity. Therefore, this work introduces a new series of NASICON-type compositions based on the Li1+xCrx(GeyTi1-y)2-x(PO4)3 system. At first, a specific glass-ceramic composition of this system was synthesized by the melt-quenching method, followed by crystallization. The crystallization behavior of the precursor glass was examined by differential scanning calorimetry and infrared spectroscopy. The results indicate that the precursor glass presents homogeneous nucleation, has considerable glass stability and crystallizes a NASICON-like phase, which allows solid electrolytes to be obtained by the glass-ceramic route. As a second step, we examine the effect of substituting Ti by Cr and Ge on the glass stability of the precursor glasses, on the structural parameters of NASICON-like phase and on the electrical properties of the glassceramics. Hence, a set of sixteen compositions of this system was synthesized. The results indicate that the glass stability increases when Ti is replaced by Ge and Cr. After crystallization, all the glass-ceramics present NASICON-like phase, and their lattice parameters decrease with Ge and increase with Cr content, making it possible to adjust the unit cell volume of the structure. Furthermore, the ionic conductivity and activation energy for lithium conduction in the glassceramics are notably dependent on the unit cell volume of the NASICON-type structure, achieving total ionic conductivities of up to 3x10-4 Ω−1cm−1. Finally, the electrochemical stability window of the NASICON-structured glass-ceramics of highest ionic conductivity is investigated. Cyclic voltammetry measurements were followed by in situ electrochemical impedance spectroscopy, enabling the effect of oxidation and reduction reactions on the electrical properties of the investigated glass-ceramics to be determined. X-ray photoelectron spectroscopy, in turn, was applied to determine which chemical species undergo reduction/oxidation. Our findings reveal that the electrochemical stability of this material is limited by the reduction of Ti+4 cations at low potentials and by the oxidation of O-2 anions at high potentials. A similar behavior at high potentials was also encountered for other well-known Li-ion conducting NASICON-like phosphate suggesting that the electrochemical behavior in oxidative potentials could be generalized for NASICON-structured phosphates.
Positively curved Killing foliations via deformations
(Universidade Federal de São Carlos, 2018-03-22)
Caramello Junior, Francisco Carlos
;
Hartmann Junior, Luiz Roberto
;
https://lattes.cnpq.br/4217613854338579
;
Töben, Dirk
;
https://lattes.cnpq.br/0022267686144981
We show that a manifold admitting a Killing foliation with positive transverse curvature and maximal defect fibers over finite quotients of spheres or weighted complex projective spaces. This result is obtained by deforming the foliation into a closed one, while maintaining transverse geometric properties, which allows us to apply results from the Riemannian geometry of orbifolds to the space of leaves. We also show that the basic Euler characteristic is preserved by such deformations, which provides us some topological obstructions for Riemannian foliations.
Vidros fosfatos com tungstênio: incorporação de cátions alcalinos e sua influência nas propriedades estruturais e condutoras
(Universidade Federal de São Carlos, 2018-03-23)
Munhoz, João Fernando Villarrubia Lopes
;
Nalin, Marcelo
;
https://lattes.cnpq.br/3349586880746735
;
https://lattes.cnpq.br/6368056523452713
Many glasses have been studied as solid electrolytes in behalf of replacing commercial liquid electrolytes. However, even for the best glass compositions available in the literature, values of conductivity similar to those presented by liquids are far beyond to be achieved. This work intends to show how changes in the structure, by means of composition, can help to increase the conductivity in oxide glasses. Samples with composition x WO3 - 0.30 (NaPO3)n - (0.70-x) NaF, with 0,30 ≤ 𝑥 ≤ 0,60;, were produced by melting quenching methodology. Substitution of tungsten for sodium fluoride generates a linear decrease of glass transition temperature while the stability remains high enough up to 𝑾 = 𝟒𝟎 %𝒎𝒐𝒍 and decreasing for higher WO3 content. Raman and 31P and 19F 1D MAS-NMR spectroscopies data shows that the less NaF leads to a depolymerization of main phosphate chains, due to formation of 𝑷 − 𝑶 − 𝑾 bonds. In addition, fluorine atoms prefer to bind in the 𝑷 − 𝑭 form, with low tungsten content, or in 𝑾 − 𝑭, with high proportion All samples showed same calculated values of Ea for ionic conductivity and drop of σ0. For higher fluoride proportion, it was observed a rise in the conductivity of around one order of magnitude. However, UV-Vis absorption curves demonstrate more presence of W5+ species in samples with 𝑾 ≥ 𝟓𝟎 %𝒎𝒐𝒍. This leads to a mixed conductivity of these materials. In order to obtain maximum ionic conductivity, NaF and (NaPO3)n were replaced by Li2O and (LiPO3)n respectively. Samples with composition x WO3 – 0.40 (LiPO3)n – (0.60-x) Li2O, with 0.30 ≤ 𝑥 ≤ 0.50; 0.40 WO3 – y (LiPO3)n – (0.60- y) Li2O, with 0.30 ≤ 𝑦 ≤ 0.50 and z WO3 – (0.80-z) (LiPO3)n – 0.20 Li2O, with 0.30 ≤ 𝑧 ≤ 0.50; were also produced using the melting quenching methodology. The three series of samples presented linear increase of Tg with their respective substitutions, besides having good thermal stability (> 100 °𝐶). Raman and 31P 1D MAS-NMR spectroscopies data exhibited the influence of WO3 content on the depolymerization of phosphate chains, as well as the formation of WO6 unit clusters, when much tungsten is present. Although UV-Vis absorption spectra indicate mixed conductivities in some samples, calculated values of ionic conductivity show that the most conductive sample without presence of reduced species reached 6.3 10−4Ω−1𝑐𝑚−1, comparable to conductive crystalline samples.
Secagem de cevada: análise da anatomia e do meio de transporte
(Universidade Federal de São Carlos, 2018-03-23)
Felizardo, Marcos Paulo
;
Freire, José Teixeira
;
https://lattes.cnpq.br/2270677706718167
;
https://lattes.cnpq.br/2619821530278648
Despite the recent motivations for application in the food industry, the characterization of polished barley grains is still scarce in the literature. In this way, the objective of this work was the experimental analysis of the effects of the plant anatomy and the transport medium on the drying process of the barley grains. The polishing experiments of the barley grains were carried out in rotary drum coated with sandpaper. Experiments were carried out to evaluate the extensive physical characteristics of barley grains at different polishing levels and ground barley grains and their parts, as well as the characterization of the physical properties of the porous media formed for these materials. For these materials, the transport properties were measured, such as: effective thermal conductivity in stagnant medium, permeability, minimum fluidization velocity and effective mass diffusivity. Finally, the transfer of heat and mass to polished grains (without external tissues) and whole grains were evaluated by means of experimental measurements. In addition, the drying media were compared with isolated submerged particle, fluidized bed, fixed bed with interstitial flow (perpendicular) and fixed bed with tangential flow. It was verified that in different levels of polishing the variations were more significant in the thickness of the grains in relation to the other dimensions, besides this in the specific masses of the porous media were identified variations and these were correlated with the variations of the grains due to the polishing. The rotary drum polishing process allowed the removal of external tissues, where for 5 days of polishing the effects of these tissues on the properties of the polished grains were not observed. For this time was removed (24.2 ± 3.6)% of surface mass. The discussion of heat transfer and mass was carried out through the characterization of the grains and drying media. The external tissues were shown to be a barrier to heat transfer and mass, besides being a superficial mechanical resistance in the barley grains.
A Formação do nutricionista para atuação na Atenção Básica na perspectiva de docentes
(Universidade Federal de São Carlos, 2018-03-23)
Zeminian, Larissa Baungartner
;
Sampaio, Sueli Fatima
;
https://lattes.cnpq.br/0737750473446351
;
https://lattes.cnpq.br/9316739090285622
This qualitative study aims to analyze the nutritionist training in order to work in Primary Health Care from the perspective of lecturers of Higher Public Education Institutions (HPEI) in the southeast of Brazil, through the application of questionnaires containing questions about the participants’ characterization and the students’ training to work in Primary Health Care. The 21 lecturers of 13 HPEI who participated in the study, pointed out the theoretical references used and issues addressed in the teaching of Nutrition, as well as the strategies used in theoretical and practical approaches and traineeships. The results were organized in the following categories: Nutritionist Training in Primary Health Care: theoretical framework, Nutritionist Training in Primary Health Care: from issues addressed to in practice, The training from both theoretical and practical approaches, being discussed in the light of Collective Health, Single Health System of Brazil (SUS – Sistema Único de Saúde), the nutritionist training, the nutritionists’ responsabilities in Collective Health and with the support of the researcher’s own experiences. It is concluded that the theoretical frameworks related to Primary Health Care are strongly approached by the lecturers in their subjects, including those of intersectoral and educational approach, which broadens and qualifies the training; the Primary Health Care consists of a very powerful playing field for having great solving, being an important place of health upgrading and providing a fulfilling job to the professional in the activities with the population, however, its physical structure, professional motivation and resources for nutritional assessment need to be revisited. It is also concluded that public polices of health and nutrition favor the training of the nutritionist to work in Primary Health Care, requiring a more consistent relation, aiming effectiveness in health actions.
Biocompósitos de liberação controlada/lenta de fertilizantes: avaliação em solo pela técnica Reflectometria no Domínio do Tempo
(Universidade Federal de São Carlos, 2018-03-23)
Medina, Ângela Fracon
;
Souza, Claudinei Fonseca
;
https://lattes.cnpq.br/4858219292242433
;
Faez, Roselena
;
https://lattes.cnpq.br/0654750186618555
The use of fertilizer in agriculture is a widely used practice in the agricultural scenery. Over the years, the need to rise productivity in the growing areas will be inevitable in the face of population growth, reflecting the increased use of fertilizers and water. In this scenario, new technologies have emerged as a way of optimizing the amount of fertilizers used. One of the alternatives is the use of materials that release the nutrient in a controlled or slowly way, denominated fertireleasers. In this work, fertilizer materials based on a natural and biodegradable polymer, chitosan, were evaluated for their efficiency in the release of fertilizers in water and soil. The chitosan was used both with KNO3 fertilizer and montmorillonite clay, producing microspheres, microcapsules and macrospheres. The materials were inserted in the soil and the release of ions was analyzed by the Time Domain Reflectometry (TDR) technique. The measurements were made from probes inserted in containers containing sandy soil, with and without field capacity monitoring, getting results of humidity and electrical conductivity. The microcapsules present a slower release behavior in both water and soil, attributed to core-shell encapsulation. In spite of the rapid release in water (2h) the materials (QF2F, QAF2F, QRF2F, QRAF2F, QF3F, QAF3F, QRF3F e QRAF3F) presented continuous release in soil during the period of analysis (~100 days). Additionally, the release is dependent on water and since some materials retained water (QF3F, QAF3F), similar to hydrogels behavior. We concluded that the microspheres, microcapsules and macrospheres have different release in water and soil and this is characteristic of the composition of each material. It is worth noting that TDR, besides determining the ionic mobility in the soil, also allowed to evaluate other characteristics of the material such as the dependence of the release with the water, the hydrogel behavior, and the degradation of the material as a function of the lifespan.
Friction surfacing of aluminum alloy 5083-H112 over AA 2024-T3
(Universidade Federal de São Carlos, 2018-03-23)
Silvério, Samuel Hernandes
;
Alcântara, Nelson Guedes de
;
https://lattes.cnpq.br/3123107570992184
;
https://lattes.cnpq.br/6403909108828767
Friction surfacing (FS) is an advanced solid-state process in surface modification with increasing applications in reclaiming worn parts, hardfacing and corrosion protection. It is considered a derivation of the friction stir welding process, keeping many benefits of the primary process such as: solid phase, forged microstructure and excellent metallurgical bond. As no melting takes place, the process allows dissimilar joining of materials while avoiding several fusion related problems. The present study addresses the deposition of AA5083-H112 coatings over AA2024-T3 substrates, focusing on the influence of the thermo-mechanical process in the mechanical properties and geometry of the deposits. A performance and geometric analysis of the depositions are also presented. Sound aluminum coatings were produced; plastic deformation and heat generation promotes a dynamic recrystallization of the anisotropic consumable rod, resulting in a fine and homogeneous deposit, free of any previous deformation. The coating presented an increase in ultimate tensile strength and failure deformation of 9% and 6%, respectively. Deposition efficiency between 25 and 50% were obtained, with a maximum of 48% average efficiency observed with 800RPM, 12kN and 16mm/s.
O Pensamento Lean na gestão de processos de mobilidade acadêmica nacional em uma instituição de ensino superior pública: um estudo de caso
(Universidade Federal de São Carlos, 2018-03-23)
Petrilli, Fernando Moura Fabbri
;
Martins, Manoel Fernando
;
https://lattes.cnpq.br/3921504261628850
;
https://lattes.cnpq.br/4424203999560942
In the Brazilian Universities, one of the great possibilities of complementary formation with strong academic, cultural and social enrichment for students, teachers and technical-administrative is the participation in programs of academic mobility. In order for academic mobility to take place, a series of actions are necessary to ensure the success of its proposal, from the dissemination of opportunities to the return of the exchange student to his home institution. "Lean Thinking", has its origins in the automotive industry and has promoted a revolution in industrial management models by directing its actions to the customer's interests, through continuous process improvements, elimination of waste and focus on total quality. As a result, the successes achieved by this management method have been adapted to improve processes in other sectors, such as administrative services, including those related to public administration, and the Lean Office has emerged. In this context, the present work aims to present a case study about the management of processes directed to Academic Mobility in a Federal Institution of Higher Education by the methodology of mapping SIPOC processes. The results obtained demonstrate the existence of operational waste points in the actions carried out and present suggestions for improvements in the processes so that the activities are more objective and agile to all involved
Efeitos do exercício prolongado sobre a contratilidade cardíaca de uma espécie de peixe migratória, Brycon amazonicus (Teleostei, Characidae)
(Universidade Federal de São Carlos, 2018-03-23)
Rissoli, Rafael Zanelli
;
Kalinin, Ana Lúcia
;
https://lattes.cnpq.br/5493936744279888
;
https://lattes.cnpq.br/5838813282371566
The present work described the effects of exercise-training (60 days) at different intensities 5 cm.s-1 (EL), 10 cm.s-1 (EM), 20 cm.s-1 (EMI) and 30 cm.s -1 (EI) on relative ventricular mass (RVM), in vitro ventricular contractility and proteins expression of excitation-contraction coupling proteins in the ventricular tissue of Brycon amazonicus, a very active fish species with migratory habits. The majority of exercise intensities did not alter the RVM, except for the EMI group where a reduction was observed in relation to its respective CT group. EL and EM groups presented more relevant increases on ventricular force generation, suggesting that the studied species show different adaptations in the capacity of contractile force generation (Fc) in the following the exercise intensity. It may be suggested that conditions imposed by the rigorous exercise protocols (EMI and EI groups) did not cause improvements in contractile performance. The present results indicate that all groups exhibited modulations of the E-C coupling components. The Ca2+ influx via NCX was important in all groups, and the relative role of RS varied considerably between groups. In EL group, the RS contribution was essential for the force generation under a wide range of estimation frequencies (0.2-1.8Hz) whereas in the RS and EM and EMI groups the RS action was only relevant at high frequencies (1.0-1.8Hz). In the EI group, the functional inhibition of RS did not cause reductions in Fc values in all analyzes frequencies, indicating that the LTCCs and the NCX took the lead during the force generation. In addition, the exercise protocols triggered different expression rates of the E-C coupling components. The EL group presented higher NCX expression rates and lower SERCA2 rates but did not alter PLB expression. The EM group presented higher expression rates of NCX and PLB, and lower SERCA2 rates. Both EMI and EI exhibited elevations in the LTCCs, NCX and SERCA2 expression rates but did not alter the PLB expression. The data generated in the present work revealed that the ventricular E-C coupling of B. amazonicus presents great plasticity in response to the exercise, modulating the relative roles of its components in accordance with the intensity of the exercise training.
Investigação da força de relações em classes de equivalência sob emparelhamento com o modelo atrasado (DMTS)
(Universidade Federal de São Carlos, 2018-03-23)
Ribeiro, Giovan Willian
;
Souza, Deisy das Graças de
;
https://lattes.cnpq.br/4404800720856419
;
https://lattes.cnpq.br/6950148178975664
Delayed matching to sample (DMTS) enhances the formation of equivalence classes and the transfer of functions between equivalent stimuli when compared to the simultaneous matching to sample (SMTS). A classes reorganization procedure permits to assess how much previous established relations are susceptible to modifications, therefore allowing to verify if DMTS training results in equivalent stimuli more strongly related to each other when compared to SMTS training. The present study explored this alternative. Experiment 1 aimed to evaluate the effects of conditional discrimination reversals, accomplished by DMTS or SMTS trainings, on the reorganization of equivalence classes established by a DMTS training. Undergraduate students were submitted to a DMTS procedure (2s) to learn AB, AC, and AD relations. After emergence of B1C1, B2C2, C1B1, C2B2, B1D1, B2D2, D1B1, D2B2, C1D1, C2D2, D1C1 and D2C2 relations, participants were divided into two groups for the remaining stages of the experiment: DMTS Group continued with DMTS (2s), while the SMTS Group was exposed to the SMTS. A reversal training modified AD relations (A1D2, A2D1) and classes reorganization tests verified whether the modifications altered the baseline equivalence relations. Out of 20 participants, 15 reorganized the classes. There were no significant differences between the groups. The high percentage of reorganization suggests that this process is independent of the presence or absence of the delay. The reversal of AD relations provoked a transient reversal of the other baseline relationships, affecting the classes as a whole. However, it is still unclear how DMTS favors class formation and function transfer, as observed in previous studies. It is possible that participants submitted to DMTS engage in precurrent behaviors during the sample-comparison delay, establishing a responses chain not planned by the scheduled contingencies. The objective of Experiment 2 was to verify if operant responses explicitly required during the DMTS interval (and verbal stimuli related to them) could become members of equivalence classes, which could be an additional source of stimulus control that partially accounts for the observed effects under this procedure. Undergraduate students performed a training of AB (A1B1, A2B2) and AC (A1C1, A2C2) relations with a DMTS (2s). At each AC training trial, a different mathematical task was presented during the DMTS delay and the participant was instructed to verbalize its result. When A1 was the sample stimulus the result of the task was always 12, and when A2 was the sample the result was always 9. Along with BC and CB trials, equivalence tests included trials in which printed numbers 12 (R1) and 9 (R2) were presented either as sample stimuli (RB, RC) or as comparison stimuli (BR, CR) in order to verify if responses emitted during the DMTS delay would be included in the classes. Additionally, relations between the words EVEN (P1) and ODD (P2) and the stimuli of sets B and C were tested. Performance of ten out of eleven participants showed formation of the equivalence classes A1B1C1R1P1 and A2B2C2R2P2. All participants attributed the stimuli P1 and P2 to the same classes as R1 and R2. These findings confirmed that precurrent responses may become members of equivalence classes and suggest that this is one of the possibilities to explain the effects of DMTS in other studies.
Síntese de precursores de heterociclos e sistemas cíclicos nitrogenados
(Universidade Federal de São Carlos, 2018-03-23)
Silva, Vitor Alcantara Fernandes da
;
Paixão, Márcio Weber
;
https://lattes.cnpq.br/3773908504964104
;
https://lattes.cnpq.br/7490678528488396
β-halovinyl ketones are valuable and versatile synthetic intermediates for the synthesis of precious bioactive molecules. Majority of the already described methodologies for the synthesis of these versatile building blocks have focused on transition-metal catalyzed reactions. However, these protocols show some key limitations, as the low stereo- and regiocontrol and the halogen nature (methods only applied to β-clorovinyl ketones). Considering their high synthetic potential, as well as the need of the development of new sustainable methodologies, this work’s main goal was the design and development of a protocol that allows the addition of halogens to ynones for a serene access to β- chlorovinyl ketones. Therefore, it was developed a highly efficient metal-free hydrohalogenation of ynones to obtain β-halo-α,β-insaturated carbonyl systems with high regio- and stereoslectivity and excellent yields.
Otimização do controle de Diatraea saccharalis (Fabricius, 1794) (Lepidoptera: Crambidae) por meio do parasitoide Cotesia flavipes (Cameron, 1891) (Hymenoptera: Braconidae) visando a redução de custos
(Universidade Federal de São Carlos, 2018-03-26)
Souza, Rubens Gamaliel Bergamo de
;
Colato, Alexandre
;
https://lattes.cnpq.br/5460973924624757
;
https://lattes.cnpq.br/8368995599074556
Brazil is the world’s largest producer of sugarcane. However, this agricultural crop is attacked by pests, especially Diatraea saccharalis. Its control in Brazil is carried out mainly by the action of the caterpillar parasitoid, Cotesia flavipes. Therefore, understanding how the interaction between these two species occurs is vital to increase the effectiveness of this control. This thesis’ goals are to improve the description of the dynamics among populations and to transform this information into a tool to optimize the biological control of this pest, focusing at the cost reduction for the farmer. In order to describe the dynamics of these two populations, the Lotka-Volterra model and a multi-agent simulation were employed. Through the first model, the characteristics of the differential equations system were obtained, and treatment suggestions to be field tested were presented, in case the pest population size is known. The multi-agent simulation, which by its construction presents more realistic characteristics compared to the Lotka-Volterra model, played a crucial role in the description of the pest in its life cycle phases, where behaviors not observed in the first model were obtained. Afterwards, biological control optimization was developed, taking into account the financial damage that the pest causes in a given period and the cost of its treatment. In order for this procedure to become a useful tool in the farms, an improved survey method has also been proposed. Finally, the results developed here present new solutions so that the biological control of this main sugarcane pest can be carried out more effectively, contributing to the reduction of the employment of chemical products and increasing the competitiveness of this Brazilian industry.
Interpoladores multilineares como metamodelos: integração à simulação de biorrefinarias no ambiente EMSO
(Universidade Federal de São Carlos, 2018-03-26)
Lino, Anderson Rodrigo de Andrade
;
Furlan, Felipe Fernando
;
https://lattes.cnpq.br/4136352953168873
;
Giordano, Roberto de Campos
;
https://lattes.cnpq.br/0834668419587001
The use of equation oriented simulators presents several advantages, mainly the separation between the mathematical model and the algorithm responsible for its resolution. This allows an easy implementation of new models as well as their reuse for various applications (simulation, optimization, parameter estimation, etc.). However, this same characteristic makes it impossible to use specific algorithms to solve models with difficult convergence. While generic and robust algorithms are not developed yet, some strategies that essentially consist of replacing nonlinear models with linear approximations can be used. Among the options are multilinear interpolators, which use data obtained in off-line simulations to approximate the behavior of the rigorous model. This option has several advantages, such as low computational demand and controlled accuracy. Recently, the use of interpolators coupled to equation oriented simulators was the subject of an article submitted by the group of researchers from the Bioprocess Development and Automation Laboratory (LaDABio) of the Federal University of São Carlos (FURLAN et al., 2016). However, the creation of a method to facilitate the construction of surrogate models has not yet been explored. In this context, this study aims to develop a methodology for construction of surrogate models and automation of the method, besides the evaluation of look-up tables. For this work, the methodology was applied to the train of evaporators with two effects and to the combined heat and power (CHP) stage, both sectors of a sugarcane biorefinery producing first and second generation ethanol. In both cases, the proposed methodology was able to approximate the response of the rigorous models within the accuracy specified.
Suportes para estudantes com deficiência visual no ensino superior
(Universidade Federal de São Carlos, 2018-03-26)
Silva, Daniele Sentevil da
;
Costa, Carolina Severino Lopes da
;
https://lattes.cnpq.br/0303439637261272
;
https://lattes.cnpq.br/8791762250118997
Visual impairment is a sensory alteration that affects the capture of information from the environment, which can cause, from mild to severe damage in the development and learning of who owns it. In higher education there are specific and increasingly complex demands for undergraduates, and it is extremely important to identify the support and accessibility services to guarantee the access and permanence of students with visual impairment at this stage of schooling. Thus, the present study had as general objective to analyze the support services offered by the accessibility centers of the IFES to students with visual impairment in college and, as specific objectives, to describe the performance characteristics of the accessibility centers of IFES for the student with disabilities visual; and, verify if there is an online description of services offered to students with visual impairment in the websites of the Brazilian IFES accessibility centers and, if so, what kind of information is offered. Participated in the research 10 coordinators of accessibility centers of federal college institutions in different regions of the country. They responded to an online questionnaire via google drive containing questions that addressed the subject of the survey. Also analyzed were the information on the websites of each IFES about the online description of the services offered. The data were analyzed by grouping them into three sets of information: description of the IFES, the nucleus and the coordinator; description of the services in the coordinator's view and online description of the services. The data showed that of the 10 IFES analyzed in the present study, it can be said that in terms of providing more information to describe the support services and accessibility resources of the nuclei, the IFES coordinators 1 and 3 allowed us to have a vision than the core of the institution offer to students with disabilities (visual impairment), for presenting more complete answers to the questionnaire questions. The coordinators of the IFES 2, 4, 5, 8 and 10 presented less complete data but gave a picture of how these services work and the coordinators of the IFES 6 and 9 responded very succinctly to the questionnaire of these services, which greatly hampered access to the coordinator's vision or knowledge about the services offered by the nucleus. Future research could verify or create effective online approach options for research participants, in the case of the present research, either with core coordinators, visually impaired students, or other core members who are involved in providing these services to the students.