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Estudo da carbonatação de concretos com adição de nanosílica
(Universidade Federal de São Carlos, 2019-04-29)
Pereira, Fernando do Carmo
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Ferreira, Fernanda Giannotti da Silva
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https://lattes.cnpq.br/0329487394818763
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https://lattes.cnpq.br/8190613301875819
The degradation of reinforcing concrete structures reflects in economic and environmental factors. Thus, the desire to minimize it motivates recent research, which aims to add nanomaterials to the cement matrix, seeking to change and improve its properties, among them durability. Nanosilica is a mineral addition with a diameter ranging from 3 to 150 nm, which interacts chemically and physically in the hydration reactions of the cement and in the microstructure of the concrete. Its use still demands knowledge regarding the effect of its incorporation in cementitious composites, such as its influence on the carbonation of the concrete. The penetration of CO2 decreases its alkalinity and generates the disassembling of the armature, which may come running in the presence of oxygen and water, compromising the durability of the structure. In this context, the present work evaluates the accelerated carbonation in concrete with nanosilica, when submitted to the attack of CO2. Traces were formulated with two different water / binder ratios, 0,40 and 0,56. The superplasticizer additive was incorporated only in concretes with water binder ratio equal to 0,40 in order to guarantee the established consistency (230 ± 10 mm). In addition to a reference trait (without mineral addition), cylindrical test specimens (50x100 mm) with different nanosilica contents (1%, 5% and 10%) were molded, as well as a trace with 1% addition of nanosilica together with 10% active silica. The accelerated carbonation tests were performed under two different conditions, a chamber with 15 ± 2% CO2 concentration, relative humidity of 75 ± 5% and temperature of 23 ± 2 °C, and another with a concentration of 3,0 ± 0,5% carbon dioxide, relative humidity 65 ± 5%, and temperature 27 ± 2 °C. In some traits, the pH of the simulated pore solution was also evaluated and microstructural pulp assays performed. The results of the mechanical strength and water absorption tests by capillarity indicate a better performance of the concretes with water/binder ratio equal to 0,40 and the trace with 10% addition of nanosilica showed to be more efficient. In the tests of durability only the specimens with water / binder ratio equal to 0,56 presented carbonation front, independent of the concentration of CO2 to which they were submitted, and there was a greater advance of the attack of CO2 in the trace with addition of 1% of nanosilica and 10% of active silica. The pH evaluation of the simulated pore solution made it possible to observe the clear difference between the values of the carbonate region and the interior of the still uncarbonated test specimen and the microstructural tests indicate a higher amount of calcium hydroxide in the reference trace. Finally, it can be concluded that in larger water/binder ratios, the effect of the porosity on the porosity of the concrete may overlap with the effect of the mineral addition of pore refinement, but the influence of these additions on the mechanical and physical properties, because in the traces with relation water/binder equal to 0,56, in spite of improving them, the addition of nanosílica damages the resistance of the concrete against the attack of CO2, due to the pozzolanic reactions that result in a lower alkaline reserve, and thus, collaborate to further advance the carbonation front.
Avaliação do desempenho do biorreator de vórtices de Taylor na expansão de células estromais mesenquimais
(Universidade Federal de São Carlos, 2019-04-29)
Gil, Liseth Viviana González
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Suazo, Cláudio Alberto Torres
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https://lattes.cnpq.br/9591447226240450
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https://lattes.cnpq.br/0402210458004107
Interest in the use of mesenchymal stromal cells (MSCs) has increased in the last 10 years because of the increasing discovery of its special characteristics for the treatment of diseases through cell therapy or tissue engineering. Despite being in the majority of postnatal organs and tissues, the amount of MSCs required to initiate any clinical treatment is insufficient and therefore the necessity of its in vitro expansion. Cultivation systems with the use of microcarriers and bioreactors, such as the stirred tank, are presented as the immediate proposal, allowing to obtain high cellular densities in a 3D environment. However, the stirred tank presents some limitations related to the distribution of hydrodynamic forces within the bioreactor and the difficulty in controlling the size of aggregates formed during cultivation, ultimately affecting the process yield of obtaining viable cells. A highly promising bioreactor proposal for presenting low and more homogeneous shear stresses, satisfactory mass transfer and ease of scaling is the Taylor Vortex Flow Bioreactor (TVFB). In a preliminary study, the BEVT, with a work volume of 60 mL, was promising in the cultivation of a line of immortalized CEMs attached to microcarriers, presenting controlled sizes of cellular aggregates (<400 μm) under conditions of low shear stresses and with sufficient oxygen transfer. In this sense, the present work involved the construction and the study of a BEVT with a work volume of 100 mL, for the cultivation of primary CEMs currently used in clinical treatments. Thus, the additional evaluation of important hydrodynamic parameters, such as the minimum velocity of suspension of particles (Ns1) and time of mixing (θm) in different conditions of rotation, were approached for two internal cylinder configurations, named in this study as round and deformed. In this evaluation the BEVT with the deformed inner cylinder presented better performance and was chosen in the culture studies. For this configuration Ns1 values between 70 and 90 rpm were obtained using a concentration of 1 to 3 g of microcarregages/mL and a maximum θm of 21±2,2 seconds for a rotation speed of 50 rpm. Cultivation of umbilical cord derived CEMs cultures and Cultispher®S 1 and 3 g / L adipose tissue using the 10% SFB alpha MEM culture medium confirmed the best modulation of the aggregation presented in the BEVT, compared to the Spinner flask, under low shear conditions, confirmed by the LDH enzyme activity, and with adequate oxygen transfer, obtaining factors of expansion of up to 17 times of viable and functional CEMs. Thus, these results present the BEVT as a very promising alternative for the cultivation of large-scale CEMs for cell therapy.
Comissões não remuneradas no IFSP Sertãozinho: participação dos servidores técnicos administrativos
(Universidade Federal de São Carlos, 2019-04-29)
Souza, Maria Eduarda de
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Mossin, Eduardo André
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https://lattes.cnpq.br/5531142963166222
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Pimentel, Andréa Eloisa Bueno
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https://lattes.cnpq.br/9330438553830026
This paper aimed to analyze how the dynamic of the cooperation of the administrative technical servers from the Sertãozinho campus of the Federal Institute of São Paulo (IFSP) works in relation to their participation in unpaid commissions. The research was developed from the assumptions of altruism, selfishness and cooperation, since monetary issues or other incentives are unrelated. In contrast to what may happens in private institutions, in this particular case, the attendees were mostly volunteers, and end up watching their workload increase. The present work used the motivational theories to cover the theme, but the game theory was chosen as the analysis factor to carry out the research. Game uses mathematical data and economic dynamics to deal with psychological and social factors. This kind of research approach is very interesting because, in a simpler way, it can capture the "cleanest" reactions of the target audience. The work was carried out with the administrative technical servers of the Sertãozinho campus, in three stages: quantitative survey regarding the participation of each server in commissions, virtual questionnaire, and face-to-face dynamics. In all moments of the work, considering the employees collaboration in the participation of each research stage, it was possible to observe the group cooperation subject. The results analyzed provided information that may be of great importance to afford the managers with data that may influence the motivation for the participation, and also the quality of the employees in these work groups. Keywords: Cooperation. Altruism. Motivation. Theory of games.
Manifestações patológicas em áreas molháveis em alvenaria e gesso acartonado em edifícios hotéis
(Universidade Federal de São Carlos, 2019-04-29)
Francescatto, Taciane Roberta
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Barreto, Douglas
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https://lattes.cnpq.br/7369326190168139
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https://lattes.cnpq.br/2869873782051688
Buildings that use the drywall system for internal partitioning need more care in environments with high moisture content, because the plasterboard component is sensitive to water action. Due to its application in the commercial sector and especially in the hotel sector, it is common to use plasterboard in wettable environments. Thus, there is a dichotomy between these environments and the sealing component. Thus, this research aims to present and analyze the pathological problems that occur in wettable environments of hotel buildings built with masonry walls and plasterboard. Regarding the recommendations proposed by the technical literature for the construction of plasterboard walls in wettable environments, the bibliographic research identified different constructive guidelines among the analyzed documents and, however, all are guided by NBR 15758-1 (2009), which is complemented by executive technical details provided by the manufacturers manuals. To identify the main pathological manifestations that occur in wettable environments built with drywall, a field survey was conducted involving hotels in the region of São Carlos-SP. In all, 7 hotels participated in the qualitative research through the application of quizzes, and among these, 3 participated in the quantitative research, developed from the analysis of documents of daily occurrences provided by the participants of this study. Regarding the results obtained from the application of the quizzes, it was possible to know the constructive profile of the buildings and maintenance teams of the hotel sector. Among the findings, it was found that most of the projects are built with reinforced concrete structure and masonry, with few using the drywall system for internal sealing, and in general, few have a building sector. self-maintenance and assiduous, it was found a unique responsibility, in which the team includes only one employee who is responsible for the management and for small and medium repairs. Regarding the documentary analysis, in Hotel 01 (EH1) and EH2, both with drywall, the area with the highest incidence of problems was the bathrooms, with 54% and 52% of occurrences, respectively. Already the EH3, with walls in masonry, the bedroom zone was the one with the highest number of records, with 65% of occurrences and 27% in bathrooms. Regarding the occurrences, although EH3 presents more records numerically, no significant differences were found when comparing the problems that occur in drywall seals with those in masonry. In the three hotels, the place with the most occurrence was in the sanitary installations, with 80% of the records, of which 48% refer to the detachment of objects from the wall. Finally, this research identified a set of pathological manifestations, with their characteristics and influences in the drywall system. This research was of great value and contributes to the knowledge of the real problems that occur in hotel buildings, because it is from records of occurrences that it is possible to raise more reliable studies regarding the pathological manifestations. This study has great potential to expand the knowledge of pathology in other types of buildings.
A utilização da variabilidade da frequência cardíaca para a prescrição individualizada do intervalo de recuperação entre as sessões de treinamento de força
(Universidade Federal de São Carlos, 2019-04-29)
Oliveira, Ramon Martins de
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Libardi, Cleiton Augusto
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https://lattes.cnpq.br/8953409094842074
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https://lattes.cnpq.br/7421171937326025
The aim of the present study was to investigate if resistance training (RT), performed with individualized recovery between sessions (RT-IND), promotes greater gains in strength and muscle mass and reduces the variability on adaptations compared to RT with fixed recovery intervals (RT-FIX). Twenty young men (age 21.9 ± 3.3 years) were randomized in the RT-IND and RT-FIX groups. Five days before the beginning of the training, measurements of the root mean square of successive R-R intervals differences (RMSSD) values of each individual were performed to establish the baseline values. Before each RT session, the RMSSD values determined whether the participants from RT-IND protocol were recovered from the previous session. Participants performed the RT session only if RMSSD values had returned to the baseline, otherwise they had to wait for an additional 24 h. RT-FIX performed an RT session every 48 h. Muscle strength was measured by one-maximal repetition (1-RM) test and muscle cross-section area (CSA) of the vastus laterals by ultrasonography were assessed pre- and post-training. 1-RM values increased significantly from pre to post-training for both groups (RT-IND: 30% and RT-FIX: 42%, main time effect, P < 0001), with no significant difference between groups. Muscle CSA increased significantly from pre to post-training (RT-IND: 15.7% and RT-FIX: 15.8%, main time effect, P < 0001), with no significant difference between groups. In conclusion, RT-IND did not increase the gains in muscle strength and mass neither reduce the variability in muscle adaptations when compared to the RT-FIX.
Avaliação do comportamento de aderência entre blocos cerâmicos e grautes
(Universidade Federal de São Carlos, 2019-04-29)
Sipp, Gustavo
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Corrêa, Márcio Roberto Silva
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https://lattes.cnpq.br/7780769246876333
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Parsekian, Guilherme Aris
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https://lattes.cnpq.br/7798651726059215
The behavior of structural masonry elements is influenced by the properties of the constituent materials and also by their interactions in the contact regions. The bonding properties between ceramic blocks and grouts used in masonry constitute a gap in national and international design standards. The existing knowledge in the academic world is currently insufficient to adequately describe the behavior presented by the interface of blocks and grouts. It is still unclear whether the grout is capable of adequately transferring the stresses of the reinforcement inserted into the masonry blocks. Thus, it is clear the need to deepen the studies developed to evaluate the adhesion properties between blocks and grouts. In this sense, the present study is inserted, aiming to expand the existing knowledge about the bonding behavior between ceramic blocks and grouts. In this sense, the present study is inserted, aiming to expand the existing knowledge about the bonding behavior between ceramic blocks and grouts. This research aimed to evaluate and discuss the properties that affect the adherence between 5 types of ceramic blocks and two types of grouts. The push-out test was used to evaluate the bond strength mobilized by the combination of these different materials. In addition, the pull-out test was also employed for some block types, seeking a more realistic analysis of the bonding behavior on masonry elements. The results obtained in the push test prove that there is a wide variation in the results, depending on the type of block and grout employed. Some of the main characteristics that influenced these results were the shape of the block cells and the shrinkage of the grout. The blocks that presented cells with more grooved surface and with friezes, tended to present increase in the contact area between grout and block, providing increases in the bonding stress. In the case of grout, the use of grout with higher compression resistance was responsible for the reduction in the results of the push test, precisely due to the reduction in the contact area caused by the shrinkage of the filler material. A test procedure was developed to analyze the shrinkage of the grout inside the ceramic blocks. Based on the results of the push test, an analytical model was developed considering two factors k1 and k2, responsible for considering the geometric shape of the block cell and the shrinkage of the filler material. This model allowed to roughly estimate which maximum load was mobilized in the push test for each combination of block type and grout. Finally, a numerical modeling of the identified interface properties was developed for two block types that presented grout slip during the push test. The behavior obtained was similar to that presented in the force vs sliding curves of the grout, for the tested specimens.
Avaliação da degradação de vigas reforçadas com FRP quando expostas ao intemperismo
(Universidade Federal de São Carlos, 2019-04-29)
Ferreira, Douglas da Costa
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Parsekian, Guilherme Aris
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https://lattes.cnpq.br/7798651726059215
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Dalfré, Gláucia Maria
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https://lattes.cnpq.br/0066111999826468
Considering structures natural aging process and also considering externally strengthened elements exposure to aggressive environments (freeze-thaw cycles, temperature, carbonation, ultraviolet radiation, wet-dry cycles, among others), little is known about the behavior and durability of the strengthening system bonding to the concrete substrate and the possible performance loss due to degradation of the intervening materials. In this context, the present work is based on the experimental analysis of the long term mechanical behaviorof the constituent materials of the reinforced concrete beams with carbon fiber sheets strengthening system (CFRP, Carbon Fiber Reinforced Polymer) applied according to the EBR (Externally Bonded Reinforcement) technique kept in laboratory environment (internal and protected) and exposed to weather (external exposure). Eight reinforced concrete beams with rectangular section, longitudinal reinforcement rate of 0.75% and concrete with compressive strength of 20 MPa, were tested. Among the set of beams, four were used as reference and two were strengthened with carbon fiber sheets, and the others were divided into two groups and exposed to six-months laboratory environment and six-months weather environment. These beams, with a distance between the supports of 230 cm, were submitted to three-points flexural testing with a midspan concentrated load. The beams were designed behave in strain limits with tension controlled rupture. Beams behavior analysis was performed based on the results of the loads and modes of rupture, deformation of the intervening materials and cracks propagation. The experimental results were also compared with the estimates limits specific at ABNT NBR 6118 (2014), ACI 318 (2014) and ACI 440.2R (2017). In addition, specimens of the strengthening system materials constituents were also created and exposed to the same environmental conditions as the beams. The mechanical properties of these materials were investigated from uniaxial tensile testing. The results showed that lamination epoxy adhesives present reductions of up to 70% in their mechanical properties when exposed to the weather, while the CFRP composite showed similar properties before and after exposure. In the case of the strengthened reinforced concrete beams, it was verified that the strengthening system provides increases of 50% and 28% in the load capacity and stiffness, respectively, when compared to non-strengthened specimens. However, the tests performed after exposure to the elements showed a reduction in the increase of the load capacity. In relation to the comparison between the theoretical and experimental results, taking into account the specifications at ABNT NBR 6118 (2014), ACI 318 (2014) and ACI 440.2R (2017), it was observed that the values of ultimate load and service load are close when property reductions are not applied.
Análise ergonômica da atividade na execução do serviço de revestimento de gesso
(Universidade Federal de São Carlos, 2019-04-29)
Almeida, Roberta Bibbó de
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Paliari, José Carlos
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https://lattes.cnpq.br/9387796929252598
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https://lattes.cnpq.br/1259620621767093
The construction industry is an important segment of the Brazilian economy, generating a large volume of wealth and jobs for various sectors. Although over the years technological advances have occurred and many physical tasks have been replaced by mechanized and automated processes, due to the availability of construction workers at low costs most of the construction tasks are still performed manually. Work in the construction industry is among the most dangerous occupations, tasks often require excessive physical exertion or perform repetitive tasks over a long period of time, which can lead to health problems. In this context this research is inserted, through ergonomic analysis is intended to generate knowledge about the ergonomic risks that construction workers are exposed, more specifically those involved in the execution of wall and ceiling coating with plaster. To identify the ergonomic risks present the following tools were selected for the case studies: Rapid Entire Body Assessment (REBA), to analyze the postures adopted during the tasks; Occupational Repetitive Actions (OCRA); for analysis of repetitive tasks; and The standard metabolic equivalent (MET), to analyze the caloric expenditure in the activities. Through the experience with the workers, questionnaires and tools application, it was possible to understand the reality of these workers. Tool's application made possible to identify the criticality of the risks and also to identify in which stages of the production process they stand out. For the REBA tool, the tasks that showed greater criticality were the Receiving and Storage and the Coating of the lower part of the walls. The OCRA tool showed high exposure indexes in the analyzed activities, mainly for the right limb in the finishing activity on walls and ceilings. For the MET tool, the tasks that stood out with high caloric indexes were the Receiving and Storage and the Waste collection and storage.
Microestrutura, resistência mecânica e corrosão sob tensão em ligas de alumínio Al-0,3%Fe e Al-4%Cu processadas por extrusão em canal angular
(Universidade Federal de São Carlos, 2019-04-29)
Braga, Diogo Pedrino
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Della Rovere, Carlos Alberto
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https://lattes.cnpq.br/8141224513975606
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Sordi, Vitor Luiz
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https://lattes.cnpq.br/8364164402481940
Grain refinement is an important hardening mechanism in metallic alloys, notably when the grain size reaches the submicrometer scale. For this purpose, several techniques of Severe Plastic Deformation (SPD) have been employed, among which is the Equal-channel Angular Pressing (ECAP). However, the relation between grain size and corrosion resistance remains a controversial subject for most metallic materials. The aim of the present work is to evaluate the microstructure, the mechanical strength and the stress corrosion cracking (SCC) resistance of two ulfrafine grained aluminum alloys, AA1050 and Al-4%Cu, severely deformed by ECAP. Microstructure was analyzed by optical microscopy (OM), scanning (SEM) and transmission (TEM) electron microscopy, while the mechanical strength was evaluated through conventional hardness and tensile tests. Constant load and slow strain rate (SSR) tensile tests were carried out in an aqueous solution containing 3.5wt% of NaCl, in order to evaluate the SCC resistance of the alloys. After ECAP, OM and MEV revealed a significant grain size reduction in both alloys, with a fragmentation and redistribution of coarse second phase particles in the case of Al-4%Cu alloy. Hardness and tensile tests indicated a remarkable increase in the mechanical strength of the processed materials. In SSR tensile tests, with a relatively short time of exposure to the NaCl environment, CST was detected only in the Al-4% Cu alloy. In constant load tests, fractures occurred at stress levels lower than the yield stress, indicating CST susceptibility for long exposure times, in both alloys. In the absence of Cu particles (AA1050), no significant effects of ECAP processing were observed on the response to CST tests. In the case of Al-4% Cu alloy, it was found that the presence, as well as size and distribution, of the second phase particles affects the CST resistance, and that these factors can be modified, and possibly controlled, by means of ECAP processing.
Natureza e cultura na filosofia de Bergson
(Universidade Federal de São Carlos, 2019-04-30)
Rates, Bruno Batista
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Pinto, Débora Cristina Morato
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https://lattes.cnpq.br/1311151012002541
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https://lattes.cnpq.br/6947290677550050
This thesis investigates the relation between the concepts of nature and nurture (culture) in the philosophy of Henri Bergson (1859-1941). Starting from the diagnosis of the "crisis of philosophy" at the turn of the nineteenth century to the twentieth century, characterized by the predominance of the natural sciences in European intellectual scene, we established two axes that we consider to be the structure of the chosen problem: 1. Bergson's early and constant assimilation of what we can generically call evolutionism; 2. The philosopher's attempt to reconcile two seemingly opposite theoretical frameworks, naturalism (realism) and spiritualism (idealism).
Avaliação de procedimentos de ensino para ampliar a produção oral de sentenças em crianças com implante coclear
(Universidade Federal de São Carlos, 2019-04-30)
Neves, Anderson Jonas das
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Almeida-Verdu, Ana Claudia Moreira
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https://lattes.cnpq.br/3777028853675653
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Souza, Deisy das Graças de
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https://lattes.cnpq.br/4404800720856419
Researches in verbal learning of sentences, in cochlear implants’ (CI) users, are recent and suggest the potential of equivalence-based instruction (EBI) and matrix training to promote the symbolic relations, the control by minimal units, the speech accuracy and the verbal productivity, from a minimum set of sentences directly taught. These studies encourage more systematic investigation to explore teaching procedures and contents, aiming at the proposing a curriculum to establish a solid verbal repertoire in children with CI. The present dissertation contributed in this direction with four studies. Study 1 evaluated the effects of two errorless teaching procedures (exclusion and fading out of the visual component in sample) on the learning of the conditional relations between dictated sentences and pictures, the equivalence relations, the recombinative generalization and the speech accuracy in tact, in six children with CI who were readers. The sentences were organized into two matrices (Sets 1 and 2) with nine sentences each; three were directly taught (the diagonals), and six were evaluated in generalization probes. The teaching conditions (fading out and teaching by exclusion) were counterbalanced among the participants, and verbal relations of the two sets were probed in multiple baseline across sets. The EBI included the tasks of the selection of pictures by matching-to-sample (MTS), with teaching by exclusion or fading out; and the tasks of the construction of printed sentences by constructed-response matching-to-sample (CRMTS), conditionally to dictated sentences. Both procedures established conditional relations between dictated sentences and pictures, but the teaching by exclusion generated fast learning and with less errors. Five of the six participants formed equivalence relations, improvement the speech accuracy in picture tact and showed recombinative performances with words of taught sentences. Study 2 simulated a curriculum module, with three sets of sentences, with progressive levels of difficulty (sentences with regular and irregular words, and pseudo-sentences); and six children with CI, readers and who have inaccurate tacts were exposed to this module. The EBI was the same as Study 1 and incorporated teaching by exclusion (more effective). According to probes in multiple baseline, all participants learned the taught relations, increased the accuracy speech in tact, and demonstrated both semantic (symbolic) and syntactic (intra and inter-matrices, receptive and expressive) productivy in the three sets of sentences. Study 3 used the EBI to teach sentences in second language and evaluated the formation of equivalent stimulus classes in Portuguese, class expansion for English sentences, and emergence of verbal operants, for three children with CI and previously readers. Participants learned to select pictures and written sentences, conditionally to dictated sentences, in Portuguese and in English, by MTS and exclusion procedures. They formed equivalence classes in Portuguese, expanded classes for sentences in English and showed accuracy in English-to-Portuguese oral translation; however, oral production in the echoic, reading and tact in English, and in the Portuguese-to-English intraverbal remained inaccurate. Study 4 evaluated whether the teaching of simple discriminations using written pseudo-sentences and abstract figures, with specific consequences formed by dictated pseudo-sentences and representative pictures, would promote the emergence of conditional and symbolic relations, with pseudo-sentence, for three children with CI. Three participants learned the simple discriminations, and conditional and equivalence relations were consistent for two participants. The findings of four studies show teaching conditions that were effective to generate the relational and symbolic learning, the speech accuracy in tact, and verbal productivity of sentences, for children with CI. These teaching procedures and contents may have implications both teaching and auditory habilitation/rehabilitation.
Contribuições sobre o envelope simulado na análise de diagnóstico em modelos de regressão
(Universidade Federal de São Carlos, 2019-04-30)
Fernandes, Victor Vinicius
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Pereira, Gustavo Henrique de Araujo
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https://lattes.cnpq.br/4536501674241631
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https://lattes.cnpq.br/1671975353265972
The simulated envelope is a diagnostic analysis method used to evaluate the hypothesis about the probability distribution assumed for the response variable in a regression model. In this work, we describe some procedures to obtain the simulated envelope and, later, we propose a method to decide if we should reject a model using the envelope. In order to compare our procedure with other proposals, we performed a Monte Carlo simulation study in two classes of regression models. The results indicate that the proposed method presents good performance, since it provides stable rejection rates of the model under the correct distribution. About other methodologies, besides having a higher computational cost, the rejection rate under the correct model increases as the sample size rises. In addition, we also compare the full normal plot and the half normal plot with envelope using Monte Carlo simulations studies. The results suggest that, in general, the full normal plot performs better, especially with the proposed procedure. Finally, we apply our decison method and the other proposals to real data from the National Health Survey (Brazil) of 2013. To these data, our method suggested a different decision from that one provided by the other procedures.
An inclusive end-user development framework for tailorable games
(Universidade Federal de São Carlos, 2019-04-30)
Garcia, Franco Eusébio
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Neris, Vânia Paula de Almeida
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https://lattes.cnpq.br/0268728255033469
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https://lattes.cnpq.br/2935753656974386
Following the growing purposes and applications of digital games, the creation of this interactive media has been becoming more popular. Industry and academy alike have studied and created tools, methods, and techniques to allow end-users to develop their own games. However, intended audiences are still restricted (normally to anglophone youngsters without physical, cognitive, and emotional disabilities). To overcome barriers, it is necessary to allow people with different interaction abilities and needs to contribute on game development. This thesis presents an end-user development framework for tailorable games, with the purpose of promoting inclusive creation of inclusive games. Our lemma is games for everyone, by everyone. The thesis starts from the hypothesis that if end-users used creation tools suitable to their interaction needs and followed a collaborative work model to iteratively improve accessibility features to be inserted into a software architecture able to modify human-computer interaction at use-time, then they would be able create games satisfying heterogeneous interaction needs of possible players. In this thesis, we have explored documental research (systematic review to identify current approaches), creation and specification (for required software systems, models, and architectures), and field research (to understand interaction requirements and evaluate the framework). The framework encompasses a formal software architecture for implementing inclusive games, a collaborative work model for co-creation of inclusion, and an end-user game development platform (Lepi). Our framework was used by an audience not yet considered by the Literature (adult people -- some of which with low literacy and that had never used a computer before -- undergoing supervision for alcohol and drug abuse rehabilitation) over four months. Our results show that the participants were able to create games that satisfied their own interaction needs, as well as those from people with different needs than theirs (therefore, they have confirmed our research hypothesis). We have also observed that game creation and play transformed the participants. The benefits went beyond software co-creation, towards self-improvements. In this way, we have contributed with participatory and universal to creation and access of knowledge by the Brazilian citizen. Moreover, as the architecture allows continuous inclusion of new audiences via the addition of new alternatives of use, we hope that we can continue enabling more people to create and play -- small steps from users, giant leaps towards universal access.
Produção de mudas de duas espécies de gramíneas nativas para restauração do Cerrado
(Universidade Federal de São Carlos, 2019-04-30)
Oliveira, Ana Carolina Cardoso de
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Forti, Victor Augusto
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https://lattes.cnpq.br/5742976162363922
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Viani, Ricardo Augusto Gorne
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https://lattes.cnpq.br/3250752369062840
The Brazilian Cerrado is a mosaic of vegetation types, raging from grasslands to forests. Cerrado has been converted and degraded by anthropogenic activities, increasing the need for ecological restoration in many areas. Restoration by planting seedlings is promising, but the efforts for seedling production are currently focused on tree species, not considering herbaceous species. Since grasses are essential in the herbaceous layer of the Cerrado, we tested whether nursery techniques used for tree seedling production would be suitable to produce seedlings of two native grasses. First, we sowed seeds of Schizachyrium sanguineum (Retz.) Alston and Loudetiopsis chrysothrix (Nees) Conert. in seedbeds with Cerrado native soil and sand as substrates and later transferred to definitive containers (30, 55 or 290 cm³) with Cerrado soil, commercial substrate or the mixture of both. Both species accepted the sowing technique, as they germinated under nursery conditions and survival after transfer to definitive containers was greater than 70%. For both species, the seedlings grew more in height and had more tillers when cultivated in the Cerrado soil, in the larger container. In a second experiment, we tested the influence of increasing levels of controlled-release fertilizer (CRF) on the growth of S. sanguineum seedlings. Seedlings growth increased with the increase in CRF levels, and CRF doses between 4.7 kg.m-³ and 6 kg.m-³ provided higher growth and nitrogen, phosphorus and potassium shoot concentration. The Cerrado soil provided higher seedling growth than the non-fertilized commercial substrate, however, lower than the commercial substrate fertilized. We conclude that seedlings of the native grasses L. chrysothrix and S. sanguineum can be produced using tree seedling production techniques currently used in commercial nurseries, and that S. sanguineum growth positively responds to higher nutrient availability in the substrate. Our results confirm the possibility of producing seedlings of native herbaceous species from seed in nursery, increasing the availability of non-tree species for Cerrado grasslands and savanna restoration.
Procedimentos metodológicos em dissertações de mestrados profissionais na área de ciências sociais aplicadas: estudos de casos múltiplos no campo de públicas
(Universidade Federal de São Carlos, 2019-04-30)
Vitalino, Adriana Lucia
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Pimentel, Andréa Eloisa Bueno
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https://lattes.cnpq.br/9330438553830026
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https://lattes.cnpq.br/6977987154542790
The objective of this study was to identify the methodological option of the authors of the Master’s Theses of Professional Masters in Public Administration from Federal Institutions of Education, from 2013 to 2016. And contribute with the characterization of the profile of the research in the Professional Masters from the Field of Public Administration Brazilian. In order to identify the methodological approaches used in the master's theses, six categories of methodological analysis were established: research focus (or how to approach the problem), research objective, research strategy, research source / environment, data collection instrument. And nature of the research problem. The study sample comprised 76 master's theses which were analyzed using qualitative and quantitative methods. The methodologies procedures used were the bibliographical research, documentary and content analysis and statistics. The results showed that the qualitative approach (42%) was the most used in relation to the qualitative and quantitative studies (34%) and quantitative (24%); the descriptive objectives were found in 49% of master's theses; research strategy case study had the highest number of occurrences, 43 (57%); as to the research environment, it was found that 83% of MSc thesis are of field, the interview (33%), the questionnaire (27%) and multiple instruments (37%) were used as data collection instruments; As to the nature of the research problem, the applied nature was identified in 80% of the master's theses. Analysis of the master's theses showed that the authors prioritized qualitative descriptive studies, of an applied nature, with field research data; and research strategy case study. It is pointed out that the master theses analyzed established a relation to the theoretical elements of this study. It is considered that this study can contribute to the reflection of students, professional programs of the field of public administration and stakeholder other interested about the methodological procedures used in the master's theses and identify opportunities for improvements in research designs. And it points out directions for new research in the Field of Public Administration Brazilian.
Etograma e protocolo para o condicionamento do papagaio-de-cara-roxa (Amazona brasiliensis) mantido em cativeiro
(Universidade Federal de São Carlos, 2019-04-30)
Santos, Ana Cláudia Marera dos
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Schlindwein, Marcelo Nivert
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https://lattes.cnpq.br/9690898537150950
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https://lattes.cnpq.br/8308648370635078
Ethology has played an important role in the conservation of fauna in the recent years. Nowadays, behavioral studies help in situ and ex situ conservation actions, becoming an essential tool for reproduction and reintroduction projects, as well as for the management of captive handling and welfare promotion, which have two main goals: the environmental enrichment and the operant conditioning, both of which are highly dependent on the information contained in the species' ethogram. Thus, considering that there is little ethological information about the species Amazona brasiliensis, a parrot threatened with extinction, the present study aimed to describe the ethogram of the species in captivity, from 82 hours of sample effort based on the ad libitum method, resulting in the description of 58 behaviors. It also developed a conditioning protocol for veterinary management, based on 10 pilot training sessions. Thus, tThus, the work resulted in increased ethological knowledge about the species Amazona brasiliensis, to suggest measures to improve ex situ maintenance, aimed at reducing stress during veterinary procedures
Coligações Eleitorais para o Legislativo Municipal: efeitos da alteração do número de cadeiras em disputa sobre o comportamento partidário
(Universidade Federal de São Carlos, 2019-04-30)
Gandin, Victor Picchi
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Kerbauy, Maria Teresa Miceli
;
https://lattes.cnpq.br/4762029784021248
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https://lattes.cnpq.br/1991724846293364
The object of this research consists of the proportional electoral coalitions that aim the election of municipal representatives. The goal was to verify whether changes in the electoral magnitude (the amount of seats in dispute) affect the partisan behavior, in terms of the coalition’s ideological consistency. Our hypothesis is that in elections with a larger number of seats in dispute the competitiveness to obtain one seat is lower and in this scenario the political parties tend to be more ideologically consistent in their coalitions. In order to test this hypothesis, were observed the proportional coalitions formed in 2008 (when the rules that caused a reduction of seats in several City Councils were still in in force) and in 2012, the subsequent municipal election (when there was a general tendency of increase in the number of seats), which allows us an empirical observance of the coalitions in two distinct moments. The research has been developed in a quasi-experimental design, aiming to verify whether the change observed in one variable (the electoral district’s magnitude) resulted in any impact in our dependent variable (ideological consistence of the proportional coalitions), while other features (such as the electoral system rules) were kept constant. This condition also allows us to classify our observed cases between a treatment group and a control group (a sample among the municipalities of São Paulo that didn't have the magnitude altered). It is concluded that in municipalities that increased the magnitude, the value of the electoral quotient decreased, making it easier for the political parties elect a councilors, regardless of the increase in the number of candidates. This lower competitiveness didn’t bring with it, as an automatic outcome, a more consistent coalitionist behavior. On the other hand, among the municipalities that increased their magnitudes, the decrease in the ideological consistence values between the two elections was lower than the one observed among the ones without any change in the amount of seats. This puts the magnitude increase as a feature that, if not directly causing an increase in the coalitions’ ideological consistence, at least avoiding a higher inconsistence. Other variables had also impacted the coalitions. The contributions brought by this research are the creation of a original data basis, and the conduction of this analysis on a municipal level.
Expansão de células-tronco mesenquimais em biorreator single-use com movimento ondulatório visando aplicações terapêuticas
(Universidade Federal de São Carlos, 2019-04-30)
Silva, Juliana de Sá da
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Suazo, Cláudio Alberto Torres
;
https://lattes.cnpq.br/9591447226240450
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https://lattes.cnpq.br/7148964803818935
Mesenchymal Stem/Stromal Cells (MSCs) and MSC-derived Extracellular Vesicles (EVs) are being targeted in different medical areas. The MSCs are present in small proportions in tissues, thus making an in vitro expansion necessary, which allows the therapeutic applicability. The single-use bioreactor technology, such as the Wave-Induced Motion Bioreactor (WIMB), is attractive due to the possibility of controlled and pre-sterilized system operation. However, the unidirectional wave motion leads to the formation of particle deposits (microcarriers and cells) on the Cellbag. The formation of the “dune-like” deposits and the deposits at the Cellbag wall (border region of the liquid) is facilitated by the increase in the hydrophilicity of the Cellbag inner film during culture. This problem impairs the MSC expansion, leading to cell expansion factors (EF) lower than 2.0. The objective of this work was to improve the Wave BioreactorTM 2/10 performance in the adhesion and expansion of Human Umbilical Cord Matrix derived Mesenchymal Stem/Stromal Cells (hUCM-MSCs) and to evaluate the cultures with respect to the expansion potential and the hUCM-MSCs therapeutic profile. The Cellbag design was modified by the implementation of a grid designed in our laboratory and placed on the platform, aiming to reduce the microcarrier deposits. Cultures were performed using CultiSpher-S® and MAG microcarriers with α-MEM culture media (10% v/v FBS). Two approaches were evaluated with the new Cellbag design: 1) adhesion phase in spinner and expansion in the WIMB with CultiSpher-S® (EF: 7.3±1.1 fold) and 2) adhesion and expansion phases in the WIMB with CultiSpher-S® (EF between 6.3 and 25.6 fold) and MAG (EF: 5.5±0.6 fold). The hUCM-MSCs harvested from the WIMB cultures showed the quality attributes. The control cultures in spinner with MAG and CultiSpher-S® and the WIMB cultures with CultiSpher-S® showed upregulated genes linked to biological functions of cell adhesion, inflammatory response, immune response, extracellular matrix organization and collagen synthesis, in relation to the monolayer-static culture. The WIMB cultures produced, on average, 11 times more EVs per hUCM-MSC when compared to the spinner culture. These results showed that the Cellbag design modification inhibited the formation of "dune-like" deposits, which improved the WIMB performance, making possible the use of wave-induced motion bioreactors in stem cell bioprocessing.
Uma análise sobre a accountability dos pareceres prévios do Tribunal de Contas de municípios com maiores PIB(s) do estado de São Paulo
(Universidade Federal de São Carlos, 2019-04-30)
Cunha, Mateus Carvalho da
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Albuquerque, Andrei Aparecido de
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https://lattes.cnpq.br/9667573506903226
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https://lattes.cnpq.br/6311830950811662
Since the redemocratization in Brazil, there is a term not yet literally translated into Portuguese, having been published in the national literature, with a significant increase of academic works on the subject mainly from the last decade: it is denominated accountability. The term refers to the way the public agents are accountable to the society for over all of their acts. In this sense, the fields of accountability, research seek to understand as the Courts of Accounts, through institutional control, can be characterized as an instrument of accountability. The present study was based on an analysis of previous opinions produced by the Court of Accounts of the State of São Paulo, using a sample consisting of 28 opinions from the 14 municipalities with the highest GDP in the state, except for the capital, which is endowed by its own Court of Accounts, from the period of 2014 and 2015. The samples were submitted to a methodology of data analysis, using specific indicators in accordance with revised literature, with the objective of inferring which opinions are, in fact, instruments of accountability themselves. The results obtained showed that the indicators do not stimulate their full potential for accountability. In particular, in one of the analyzed waves, there are weaknesses, in particular a low popular participation in the process of auditing public accounts, which can be attributed to a racial stance in the Court of Auditors and evolution is necessary.
Influência das cargas eletrostáticas na filtração de partículas em meios filtrantes de fibra de vidro
(Universidade Federal de São Carlos, 2019-04-30)
Oliveira da Silva, Flavia Matias
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Aguiar, Mônica Lopes
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https://lattes.cnpq.br/0431688649128529
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https://lattes.cnpq.br/1536476217054773
Currently, in the gas filtration processes, the presence of electrostatic charges in the particles has been shown to contribute positively to the performance of the filter medium. Due to its high competitiveness in the market for gas-solid separation equipment, the hybrid filter has shown great benefits, being able to operate with low pressure drop and high collection efficiency for fine particulate matter, increasing the useful life of bags, besides reducing the expenses with energy and maintenance of filtration equipment. Hybrid filters are the combination of two or more gas-solid separation equipment with the aim of improving the gas filtration process. In this purpose, the objective of this work was to evaluate the effect of the electrostatic charge applied on the cement particles, during the formation of the dust cake filtration in a glass fiber filter medium. For this purpose, we investigated the particle size distribution of the cement particles, the specific resistance of the cake and the porosity of the filter cake using the Ergun equation with an electrostatic charge of -1, -2, -4, -10 and -12 kV but just -10 and -12 kV there are corona effect. Images were obtained in a scanning electron microscope (SEM) to determine the penetration of the particles in the filter media, the mean particle diameter and the experimental porosity of the filter cake. For the -1, -2 and -4 kV loads applied to the particles, the specific resistance of the dust cake, the pressure drop as a function of the collected mass and the filtration time were estimated and it was verified that the specific resistance of the dust cake and the pressure drop decreased while the amount of particulate material retained in the filter media and the total filtration time increased. At the tensions of -10 and -12 where the corona effect was active, the electrostatic precipitator retained 89% of the particulate material fed in the process and thus the penetration of the particles in the tissue decreased and the filtration time increased by up to 6 times for a -12 kV curve. The filtration tests showed a positive influence of the electrostatic charge on the cement particles during the formation of the dust cake.