Repository logo
Communities & Collections
Entire repository
About
English
العربية
বাংলা
Català
Čeština
Deutsch
Ελληνικά
Español
فارسی
Suomi
Français
Gàidhlig
ગુજરાતી
हिंदी
Magyar
Italiano
Қазақ
Latviešu
മലയാളം
मराठी
Nederlands
ଓଡିଆ
Polski
Português
Português do Brasil
Русский
Srpski (lat)
Српски
Svenska
తెలుగు
தமிழ்
Türkçe
Yкраї́нська
Tiếng Việt
繁体中文
Have you forgotten your password?
  1. Home
  2. Browse by Date

Browsing by Issue Date, starting with "2019-12-05"

Filter results by year or month
Now showing 1 - 20 of 11408
  • Results Per Page
  • Sort Options
  • Loading...
    Thumbnail Image
    Item type:Item,
    Altas habilidades/superdotação em liderança: identificação e suplementação para o ensino fundamental I
    (Universidade Federal de São Carlos, 2019-12-05)
    Lima, Clairen Angélica Santiago
    ;
    Rangni, Rosemeire de Araújo
    ;
    https://lattes.cnpq.br/6399149504309769
    ;
    https://lattes.cnpq.br/3918587725545579
    LIMA, C. A. S. High Skills/Leadership Giftedness: identification and supplementation for elementary school I. Master’s dissertation. Post-Graduation Programo of Special Education. Federal University of São Carlos, 2019. High Ability /Giftedness (HA/G) students demonstrate high potential in any of this areas isolated or combined: intellectual, academic, leadership, psychomotor and arts, furthermore showing great creativity, involvement in learning and performing tasks in areas of interest, according to the law. Although Leadership is one of the areas in HA/G, few studies are found in Brazil on this context, and even less in the school context. The school has an academic bias that difficult the identification on plans for potential development of students with leadership indicators. It was thought in identification in students with leadership profile at school, specifically in elementary school and how it would be this procedure for evaluation. This way it was decided to split this work into two independent studies that interweave themselves: Step 1 – High Ability/Giftedness in Leadership: Initial referral of the elementary school students and Step 2 – Enrichment of students with leadership characteristics in elementary school. The step 1 aimed to indicate gifted leadership students in a municipal public school, in the inland city of São Paulo. The draw of the research was descriptive and field study. A hundred ninety (190) students, and fifteen (15) teachers took part of the research. The instruments used were questionnaires for the teacher description; Indicator ckecklist (LIVIAHSD); Questionnaires to high ability/giftedness indication (QIIAHSD-PR); Appointment leadership list (CNL). The results pointed to seven (7) students with leadership characteristics and considered the instruments effective for identifying. The Step 2 objectives were: to plan and to accomplish a curriculum enrichment project to students with high ability/giftedness with leadership characteristics at the multifunctional resource room enrolled in an elementary school in the municipal public school in the city of São Paulo. The research was characterized in descriptive study and action research. The seven students indicated (Step 1) took part to the curriculum enrichment project (step 2) at the multifunctional resource room in the specialized educational service. The enrichments were performed type I and II with chosen themes by the students. It happened at the school in opposite time of the classes. The students could experience diversified activities and the results were positive due to the involvement of all students with the activities. Key words: High Ability/Giftedness. Leadership. Identification. Enrichments.
  • Loading...
    Thumbnail Image
    Item type:Item,
    O mundo Panará em criação
    (Universidade Federal de São Carlos, 2019-12-05)
    Werneck-Regina, Adriana
    ;
    Peggion, Edmundo Antonio
    ;
    https://lattes.cnpq.br/9849805103860827
    ;
    https://lattes.cnpq.br/3050098696837860
    The aim of this thesis is to outline ways of conceiving growth, marriage and death among the Panará, people speaking the Gê language that inhabits the Panará Indigenous Land, covering the north of Mato Grosso and southern Pará. At the same time, the contours of social relations that are configured as creation are traced, exploring how they connect to the perceptions of the growing body, the marrying body and even the body that changes when it dies. It is observed that the creation focuses on contexts of action related to the nutrition of the bodies and the relations practiced by them, involving the participation of the dead. It is discussed how the latter become constituent parts of socius. In discussing creation as a social model, it is considered how its articulation with mutual care is unstably configured, since the conflict is unveiled as inherent to the condition of existing. At the same time, it reverberates in the notion of person, indicated in it that being good and bad are powers of existences.
  • Loading...
    Thumbnail Image
    Item type:Item,
    Development of seminconductor nanowire materials for electronic and photonics applications
    (Universidade Federal de São Carlos, 2019-12-05)
    Piton, Marcelo Rizzo
    ;
    Guina, Mircea
    ;
    Gobato, Yara Galvão
    ;
    https://lattes.cnpq.br/7558531056409406
    ;
    https://lattes.cnpq.br/2913665013211219
    The thesis is concerned with study of GaAs nanowires fabricated on Si substrate. The possibility of growing III-V semiconductor materials directly on silicon in the form of nanowires is an attractive route to the integration of microelectronic, photonic and optoelectronic technologies. To this end, development of functional heterostructure require effective and controllable doping but the dopant incorporation mechanisms involved in nanowire growth can be quite different from the well-established semiconductors thin film technology. The interplay of the different dopant incorporation mechanisms and the competition between axial and radial growth can result in dopant concentration gradients in the nanowires. As a key technology development enabling the study of transport properties in nanowires, a method for fabricating electrical contacts on single NWs using electron- beam lithography is reported. On the other hand, the reduced dimensions and the quasi one-dimensional nanowire geometry are challenging factors for the fabrication of electrical contacts in the correct geometry for Hall effect measurement, which is traditionally used in planar film to determine the dopant concentration and carriers mobility. Therefore, alternative techniques were employed to gain an understanding of the dopant incorporation mechanisms. To this end, Raman spectroscopy and current-voltage analysis on single-nanowire were used to estimate the spatial distribution of the Be and Te dopants along the axial direction of GaAs nanowires. The study reveals that the dopant incorporation mechanisms are strongly affected by the growth conditions for both p-type and n-type GaAs nanowires, resulting in gradients of dopant concentration along the nanowires. Besides the carrier transport properties, the waveguide properties of semiconductor nanowires were explored in the area of chiral sensing and emission of circularly polarized light. By fabricating asymmetric gold layers deposited on the nanowires sidewalls and under the adequate experimental conditions an extrinsic optical chirality configuration is achieved. The results show a strong chiral behavior in both absorption and emission of the partially Au-coated nanowires, and paves the way for applications such as chiral sensing and emitting devices.
  • Loading...
    Thumbnail Image
    Item type:Item,
    Métodos de estimação em modelos de efeitos mistos não lineares de caudas pesadas
    (Universidade Federal de São Carlos, 2019-12-05)
    Gomes, José Clelto Barros
    ;
    Novelli, Cibele Maria Russo
    ;
    https://lattes.cnpq.br/1011098065426388
    ;
    https://lattes.cnpq.br/7522100387675610
    Parameter estimation in nonlinear mixed-effects models is often challenging. In this thesis, a comparison of estimation methods for these models is proposed under a frequentist approach. In the first study, a comparison of maximum likelihood estimates under an exact method via Monte Carlo expectation-maximization (MCEM) and an approximate method based on a Taylor expansion, frequently used in the literature, is provided. In a second study, a restricted maximum likelihood estimation method is proposed, aiming to decrease the bias for the variance components estimates, based on the integration of the likelihood function on the fixed-effects, also in an exact likelihood context. These estimates are compared to the maximum likelihood ones. For the latter comparison, stochastic approximation of expectation-maximization (SAEM) algorithms are considered. The random effects and errors are assumed to follow multivariate symmetric distributions, namely the scale mixture of normal distributions, which include the normal, t and slash distributions. Finally, a general nonlinear mixed-effects model is proposed, where no linear relation is assumed in the random effects structure. In all the proposals, real data sets and simulation studies are used to illustrate the estimates’ properties.
  • Loading...
    Thumbnail Image
    Item type:Item,
    Caracterização e avaliação biológica do colágeno marinho de esponjas incorporado na hidroxiapatita para a engenharia do tecido ósseo
    (Universidade Federal de São Carlos, 2019-12-05)
    Parisi, Julia Risso
    ;
    Tim, Carla Roberta
    ;
    https://lattes.cnpq.br/7999144275569009
    ;
    Renno, Ana Claudia Muniz
    ;
    https://lattes.cnpq.br/4106611304688552
    Fractures cause non-union and delay in bone consolidation, those problems are associated with a substantial physical incapacity and high socioeconomic costs and it’s considered an important clinical challenge. In this context, some biomaterials have been investigated to accelerate the consolidation of fractures and to be effective for bone grafting. One of the most promising strategies to improve the biological performance of bone grafts is the combination of different biomaterials. In this context, the aim of this work was to evaluate through in vitro assay (study I) and in vivo study (study II) the effects of the incorporation of marine spongin (SPG) from Aplysina fulva into Hydroxyapatite (HA) for bone tissue engineering proposals. In the study I, SPG and HA scaffolds with different proportions (HA/SPG 90/10 and HA/SPG 70/30) were produced. For this, the following procedures were evaluated: scaffolds mass loss after incubation, pH, Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and in vitro cell viability. Regarding study II, HA and HA/SPG 70/30 scaffolds were produced and SEM analysis was performed to characterize the samples. Also, in order to evaluate the in vivo tissue response, samples were implanted into a tibial bone defect in rats. Histopathological, immunohistochemistry and biomechanical analyzes were performed after 2 and 6 weeks of implantation to investigate the effects of the material on bone repair. The results of study I showed that pH measurements presented no statistical difference between the groups. Moreover, a higher mass loss was observed for HA/SPG70/30 compared to the other groups for all experimental periods. Moreover, SEM representative micrographs showed the degradation of the samples. FTIR analysis demonstrated the absorption peaks of the materials. A higher L929 cell viability for HA/SPG 70/30 was observed compared to HA and HA/SPG 90/10 on days 7 of culture. Furthermore, HA/SPG 70/30 showed a significant lower MC3T3 cell viability compared to HA and HA/SPG 90/10 on day 1. After 3 days the HA group showed lower cell viability when compared to the control group and HA/SPG 70/30. In the study II, it was possible to observe through the SEM results that SPG were successfully inserted in the HA, forming a homogeneous scaffold. The histological analysis demonstrated that the HA/SPG (70/30) group presented an accelerated material degradation and enhanced newly bone formation compared to the HA group. Additionally, histomorphometry analysis showed higher values of %BV/TV and N.Ob/T.Ar for HA/SPG (70/30) compared to the HA. Immunohistochemical analyzes, the Runx-2 immunolabelling was observed in granulation tissue and newly formed bone for all experimental groups. Furthermore, HA/SPG (70/30) showed an increase of immunolabelling compared to the other groups. Moreover, the VEGF immunolabelling was observed in granulation tissue for all experimental groups however, no difference was found. The biomechanical analysis demonstrated similar values for all groups. Considering the results of the two studies it is concluded that SPG can be used as an additive in HA, especially the one mimicking the composition of bone (with 70% of HA and 30% of SPG), providing an improvement in biological performance for bone regeneration applications. However, further long-term studies should be carried out to provide additional information regarding the material degradation and bone regeneration.
  • Loading...
    Thumbnail Image
    Item type:Item,
    Prática segura na administração de medicamentos injetáveis para prevenção de infecção relacionada à assistência à saúde: elaboração e validação de instrumento
    (Universidade Federal de São Carlos, 2019-12-05)
    Fittipaldi, Thais Roberto Magalhães
    ;
    Figueiredo, Rosely Moralez de
    ;
    https://lattes.cnpq.br/2597491235073085
    ;
    https://lattes.cnpq.br/6565148052129714
    Introduction: Injectable medications are often used in health services, the knowledge of the professionals and adherence to good practices are essential for safety during their preparation and administration, which minimizes the risks of existing infection. Objective: To develop and to validate an instrument to measure the knowledge of nursing professionals about infection prevention in the administration of injectable medications. Method: Methodological study of quantitative approach. The conceptual structure of the instrument was guided on the situational diagnosis made with nursing professionals from the State of São Paulo, on national and international publications and guides about the subject. The evaluation was by face recognition and valuable content. To select the judges, the criteria used was: minimum professional experience of two years in assistance, experience in infection control or to be a researcher in the department of nursing in infection control department. For the assessment of each department an agreement rate above 80% was considered appropriate, for the items assessment, were considered valid those with Content Validity Index ≥ 0,8. After, the pre-test was performed with nursing professionals by snowball technique. Results: Final instrument consisting of 24 items, divided into four domains: preparation of the workplace, preparation of injectable medications, administration of injectable medications and disposal of sharps. Eleven judges validated the instrument, three domains obtained an agreement rate below 80% in relation to the inclusion of items, and that´s what were added three items, one item for each domain. In spite of all items reached a CVI> 0,80, twelve items had changed on the essay by suggestion of the judges. The pre-test was performed with 34 nursing professionals, and nine items had changed on the essay as suggested by the target audience. Conclusion: Tool developed by face validation and content, available to measure the knowledge of nursing professionals about infection prevention in the administration of injectable medications.
  • Loading...
    Thumbnail Image
    Item type:Item,
    Segregação Socioespacial em Sorocaba (1980 – 2018): o processo de territorialização nos condomínios Residencial Ipatinga e Parque dos Eucaliptos
    (Universidade Federal de São Carlos, 2019-12-05)
    Costa, Vinícius Felipe da
    ;
    Melo, Ismail Barra Nova de
    ;
    https://lattes.cnpq.br/3576937472687059
    ;
    Lana, Rita de Cássia
    ;
    https://lattes.cnpq.br/1816504631940006
    Based on the understanding that socio-spatial segregation occurs as a strategy for the real estate sector and for the State, preventing portions of the population from having access to decent housing, we sought to problematize the issue by analyzing the process of territorialization of groups of residents living in condominiums in a situation of land tenure irregularity in the western periphery of Sorocaba-SP. The cut of the Residencial Ipatinga and Parque dos Eucaliptos condominiums serves as an empirical basis to support this problem. For this, the historical process of housing financing and the periphery of housing in the city was analyzed in order to apprehend the production of socio-spatial segregation. Then it was verified how some social groups adapted or overcome this condition of exclusion. The practices present in these places reveal strategies for adapting to the conditions imposed by the hegemonic agents, constituting norms created locally, but which are connected to different scales and levels of reality. In this way, a theoretical exercise was carried out brought the global context of the place closer, exposing the nexus between the hegemonic use of the territory taken as a resource, and the hegemonized use of a territory built as a shelter.
  • Loading...
    Thumbnail Image
    Item type:Item,
    Roda de conversa: (re)pensando o processo de ensino de alunos com deficiências no ensino fundamental II
    (Universidade Federal de São Carlos, 2019-12-06)
    Aporta, Ana Paula
    ;
    Denari, Fátima Elisabeth
    ;
    https://lattes.cnpq.br/5575213011914394
    ;
    https://lattes.cnpq.br/3865029215782402
    Research that aims to investigate the reality of the inclusive process of people with disabilities in the common school system points out several components that still represent a barrier to their effective quality. One of the most frequently portrayed components in the literature refers to the methodological issues contained in the teaching process of these students and the lack of training of teachers to work with this population in school. Thus, this research aimed to develop a continuing education with professionals responsible for Elementary School II, about curriculum adaptations to meet the student with disabilities included in their classroom. Thus, a qualitative research was conducted, of nature descriptive and outlined by action research. 23 professionals from the school community participated in the research, including: elementary school teachers; Brazilian Sign Language Interpreters - LIBRAS; speech therapist; pedagogical assistant; and instructors of children with disabilities in a School Unit in the interior of São Paulo State. As training and research procedure, formative conversations, observations of classroom activities and teachers' discourse analysis were carried out. Considering the applied nature of the research focus theme, observations were made from three classes of 6th grade teachers and records of activity adaptation practices before, during and after the conversation wheels. Wheel recordings were analyzed to identify the core components contained in teachers' statements that influence their practice. The results obtained in the first observations and then in the first two rounds of conversation, it was found that the teachers had difficulties to teach students with disabilities. Also, it was observed that teachers did not perform curricular adaptations in the activities aimed at teaching these students. After the first two rounds, teachers began to rework their own identities, and with that, they thought about activities options tailored for students with disabilities. Thus, it was observed that teachers had actions with the purpose of offering curricular learning considering the potentialities of students with disabilities. Moreover, at the end of the research, it was found that the conversation wheels contributed to adaptive actions for students with disabilities. With the observations of the teachers' classes after the wheels, it can be verified that they prepared and performed different activities based on the student's characteristics. Thus, this research states that the conversation wheel can be an effective teacher training strategy for changing the practice of teaching students with disabilities.
  • Loading...
    Thumbnail Image
    Item type:Item,
    Uma avaliação qualitativa da presença de micotoxinas e micro-organismos toxigênicos em insumos e em cervejas artesanais
    (Universidade Federal de São Carlos, 2019-12-06)
    Paix, Murilo D`Abruzzo
    ;
    Rodrigues-Filho, Edson
    ;
    https://lattes.cnpq.br/3667941735597178
    ;
    https://lattes.cnpq.br/7248460348326502
    Consisting primarily of water, hops, malted and non-malted cereals as well as yeast, beer is one of the most consumed alcoholic fermented beverages in the world. Although there are risk laws that compromise product quality, some pathogens such as fungi can contaminate the raw material used in beer production with secondary metabolites. For example, mycotoxins which are compounds produced by filamentous fungi, which in certain amounts can cause disease in animals and humans. Thus, we studied some fungi of the species of the genus Fusarium spp. and Aspergillus flavus to identify which mycotoxins could produce when grown in vitro under favorable input conditions (barley, maize and rice) used by microbreweries for the production of craft beers. These microorganisms when cultivated under favorable conditions, it was possible to find in their fungal extract that fungi of the genus Fusarium spp., Produced mycotoxins such as Zearalenone, α-Zearalenol and β-Zearalenol, Nivalenol, Fumonisin B1, in relation to the extract. obtained from the cultivation of the fungus Aspergillus flavus, it was possible to observe the production of mycotoxin Aflatoxin B1. Six craft beers were produced on a laboratory scale using the same previous inputs without contamination with the fungi in different proportions of barley, corn and rice, in which these samples when subjected to liquid chromatography coupled with mass spectrometry, but were not found. In addition, a study was carried out under which fungi could be isolated from barley grains used by microbreweries, where it was possible to isolate seven fungi. And with micro-cultivation and MALDI-TOF experiments, two fungi may belong to the genus Fusarium sp. and the genus Mucor sp.. Several bacteria were also found when isolating microorganisms, which were also submitted to experiments using MALDI-TOF, many of which have a very similar proteomic profile.
  • Loading...
    Thumbnail Image
    Item type:Item,
    Aproveitamento energético da vinhaça de cana-de-açúcar pela biodigestão em dois estágios em reatores anaeróbios de leito fluidizado: mesofílico e termofílico
    (Universidade Federal de São Carlos, 2019-12-06)
    Ramos, Lucas Rodrigues
    ;
    Silva, Edson Luiz
    ;
    https://lattes.cnpq.br/9720274214573371
    ;
    https://lattes.cnpq.br/1194041789932200
    This research evaluated the effect of operational parameters and of stage integration on the performance and energetic feasibility of the anaerobic digestion of sugarcane vinasse in anaerobic fluidized bed reactors. The research consisted of two studies. The first one investigated the effect of hydraulic retention time (HRT) (18 h to 10 h) on the CH4 production and organic load removal of the thermophilic (55 °C) methanogenic reactor of a two-stage digestion system. Based on these results, the second study evaluated the increase of organic loading rate (OLR) (2.7 a 24.7 kg COD.m-3.day-1) on thermophilic (55 °C) and mesophilic (30 °C) methanogenic reactors fed by the same acidogenic thermophilic reactor (55 °C). All systems were compared with single stage thermophilic digestors (55 °C). In addition to H2 (maximum yield of 0.70 ± 0.08 mmol H2.g COD-1 on the OLR of 90 kg COD.m-3.day-1), the higher production rates (MPR) were also observed on two-stage systems (2.71 ± 0.26 L CH4.day-1.L-1 to 3.18 ± 0.29 L CH4.day-1.L-1) on the OLR range of 13.3 to 21.6 kg COD.m-3.day-1, on thermophilic methanogenic reactors, and on the OLR of 24.7 kg COD.m-3.day-1 on the mesophilic reactor. Although the decrease in HRT was beneficial, the increase in OLR modified the performance of the methanogenic reactors in distinct ways. While the yield and the MPR of the thermophilic condition decreased by increasing the OLR to 24.7 kg COD.m-3.day-1, the MPR of the mesophilic reactor was maximum, indicating operational stability even under overload conditions. However, the higher MPR did not correspond to higher energy productions, especially on the thermophilic systems, being inferior to the single stage digester. The single stage system was estimated with 40567 m3 producing 28 MW (2.5 MW per million tons of sugarcane), with energy yield of 10850 kJ.kg CODrem-1. The best alternative to this system was the recycling of the effluent of the mesophilic metanogenic reactor to the feed of the thermophilic acidogenic reactor, designing an acidogenic reactor of 1424 m3 and a methanogenic reactor of 32,387 m3, producing 28.8 MW (2.6 MW per million tons of sugarcane) with an energy yield of 10777 kJ.kg CODrem-1. Thus, energetic recovery of sugarcane vinasse by biodigestion on anaerobic fluidized bed reactors is recommended on two-stage systems with a thermophilic acidogenic reactor (OLR 90 kg COD.m-3.day-1) and a mesophilic metanogenic reactor (OLR 8 kg COD.m-3.day-1).
  • Loading...
    Thumbnail Image
    Item type:Item,
    Letramento crítico e ensino de espanhol no ensino médio integrado: questões teórico-práticas no contexto dos Institutos Federais
    (Universidade Federal de São Carlos, 2019-12-06)
    Benedini, Larissa Cristina Arruda de Oliveira
    ;
    Gregolin, Isadora Valencise
    ;
    https://lattes.cnpq.br/1015869228676997
    ;
    https://lattes.cnpq.br/2793478087020544
    “The formation of a critical reader able to go beyond text decoding” (BRASIL, 2015, p. 9) is a concern that is present in both the documents that guide foreign language teaching in high school (BRASIL, 2006) and in the foreign language textbook itself (PNLD 2015 and 2018). We understand that the formation of this critical reader, following the principles of critical literacy, meets the assumptions for foreign language teaching in a comprehensive vocational secondary education as provided in the documents that guide the high school integrated in the Federal Network. However, our perception as a Spanish teacher at a Federal Institute of Education is that there is a mismatch between theory and practice in the curricular attitude of teachers. Taking into account the importance of the critical debate on the concept of literacy (Soares, 2014; Street, 2014; Baptista 2010; Cassany, 2006 and 2010; Monte Mór, 2015; Duboc, 2012) for the field of foreign language teaching in Brazil, the aim of this research is to understand which conceptions about critical literacy and critical reader are currently produced by the theoretical field and how such conceptions are appropriated by a group of Spanish teachers, seeking to identify which evidence in their Spanish teaching practices show the transposition of these conceptions. In addition, it intends to analyze the “curricular attitude” (DUBOC, 2012) of these teachers in the gaps (DUBOC, 2012) of Spanish textbooks. For this, we proceeded to a bibliographical revision about the notion of literacy in national and international scientific productions and in documents that guide the Spanish teaching in Brazil and the PNLD LEM 2015 and 2018. Subsequently, we elaborated an online questionnaire in order to identify conceptions of Spanish teachers group from Federal Institutes. With these data, we conducted interviews with a part of these teachers, in order to deepen our analysis of the “curricular attitude” (DUBOC, 2012) of these teachers, the concept of literacy in their teaching practices using a textbook whose proposal starts from the idea of forming a critical reader in Spanish language and considers the critical literacy as theoretical principle. The analyzes showed that teachers have different conceptions about critical literacy and do not fully take advantage of the “gaps” that could allow the effective formation of the critical reader in Spanish, which seems to confirm our hypothesis that the implementation of critical literacy, as proposed in theoretical field, it depends more on the curricular attitude of the teacher than on what the textbook or curriculum documents offer as a work suggestion. We conclude, therefore, that it is necessary to strengthen the relationship between theories and practices in order to reduce the mismatch between what official documents, textbooks, linguistic research and the teaching practices of the teacher express. The choice of critical literacy as a perspective for Spanish language teaching in high school integrated to the technical in the Federal Network, whether or not integrated with other approaches to language teaching, fully meets the principles of education desired for this type of education.
  • Loading...
    Thumbnail Image
    Item type:Item,
    Modelo de dispersão Hiper-Poisson para variáveis discretas observáveis e não observáveis
    (Universidade Federal de São Carlos, 2019-12-06)
    Santos, Daiane de Souza
    ;
    Rodrigues, Josemar
    ;
    https://lattes.cnpq.br/4359114733394761
    ;
    Cancho, Vicente Garibay
    ;
    https://lattes.cnpq.br/3503233632044163
    Poisson distribution is widely used to model count data, however it has the disadvantage the assumption that the data must have equal mean and variance, which is not always true, since in many situations the phenomenon of overdispersion (variance greater than average) or under- dispersion (variance lower than average) is common. Thus, we work with the hyper-Poisson distribution, which may accomodate data with overdispersion or underdispersion. The hyper- Poisson model is investigated here in two distinct scenarios, first modeling observable random variables in counting problems, and secondly representing an unobservable (latent) variable used in survival analysis models. In the first scenario, we take a classic approach for the estimation of the parameters of the hyper-Poisson distribution and we developed the usual likelihood ratio test, together with the gradient test to test the model dispersion parameter. In the survival analysis, we propose a new cure rate model induced by frailty discrete with hyper-Poisson probability distribution, since it is important to choose a distribution that takes into account the dispersion of risk factors. For this new model we developed inferential procedures from the classical and bayesian perspectives. All the models worked were analyzed through simulation studies and applied to real data sets.
  • Loading...
    Thumbnail Image
    Item type:Item,
    Análise da evolução de indicadores do número de usuários de transporte público urbano na cidade de Bauru-SP
    (Universidade Federal de São Carlos, 2019-12-06)
    Santos, Jéssica Fernandes dos
    ;
    Hirosue, Fernando Hideki
    ;
    https://lattes.cnpq.br/4091598921285700
    ;
    https://lattes.cnpq.br/2917517904317097
    The present work sought to analyze the evolution of the number of users of the public transport system in Bauru city over the period from 2008 to 2018. Knowing how the use of public transport is going is of fundamental importance for the development of public policies in terms of what it says, respect to mobility, social inclusion, urban planning, reduction of environmental damage, among others. For this, the Index of Passengers per Kilometer (IPK) was used, which reflects the use of public transport, and the Index of Equivalent Passengers per Kilometer (IPKe). The calculation of the IPK and the IPKe values ​​was performed based on data provided by the Municipal Urban and Rural Development Company of Bauru (EMDURB), which coordinates the city's transit and transport system. The data used were the Tariff Evolution, Passenger Evolution, and Mileage covered by the system. With the values ​​of IPK and IPKe calculated monthly during the analyzed period, it was concluded that the use of public transport in the city of Bauru follows the national trend, presenting a period of stagnation in the public transport system. Although the values ​​found are within the expected range for the size of the municipality (being consistent with the national average), the low IPK and IPKe values ​​indicate a lower use of the system. The IPKe is an index that directly reflects on the calculation of the tariff, so when this index drops, the tariff tends to increase, and this can drive even more users away from the system.
  • Loading...
    Thumbnail Image
    Item type:Item,
    Determinantes estruturais da bioluminescência vermelha e eficiência catalítica na luciferase de phrixothrix hirtus e seleção de combinação emissora de luz vermelha distante com 6´-amino-análogos de luciferina
    (Universidade Federal de São Carlos, 2019-12-06)
    Bevilaqua, Vanessa Rezende
    ;
    Viviani, Vadim Ravara
    ;
    https://lattes.cnpq.br/3942043373510668
    ;
    https://lattes.cnpq.br/1663817105266909
    Luciferases are the enzymes responsible for bioluminescence. These enzymes catalyze the oxidation of luciferins, in which the energy is released in the form of light with high efficiency. The luciferases fireflies from North America, Europe and Japan are the most known and have been the most used for analytical porpouses, however, they have limited applicability in mammalian tissue bioimaging, because its structure is adapted to the production of yellow-green bioluminescence, which is partially absorbed by hemoglobin and bone tissues. The Phrixothrix hirtus railroadworm luciferase, cloned and characterized by our group, is the only one that naturally produces red light, has a high affinity for luciferin and a reasonable affinity for ATP, being potentially useful for analytical assays and pigmented samples. However, the wild-type luciferase has low quantum yield (15%) and thermoestability when compared to green light-emitting luciferases (40 to 60%). In order to better understand the relationship between the structure and activity and bioluminescence spectrum in this luciferase, and then to develop brighter and red- shifted luciferase, site-directed mutagenesis were performed in the active site and investigated the 6' amino analogues effect in the bioluminescence properties. The majority of luciferin binding site mutations impacted catalytic properties, including KM, both overall and oxidative constant and efficiency, but did not affect the spectrum significantly, indicating that these active site residues are important for luciferin binding and catalytic activity, but do not interact with the excited oxyluciferin during the light emission step. The only mutations that affected the spectra are located on the benzothiazolic side of the luciferin binding site. Thus, to better understand the influence and interectaions of this benzothiazolic side of the luciferin binding site in the bioluminescent properties, we used luciferin amino-analogues modified in 6'-position. The P. hirtus red-emitting luciferase had the highest bioluminescent activity and the most far red-shifted spectra with larger 6 'amino-analogs than other luciferases, indicating a larger cavity on the benzothiazolic side of the luciferin binding site. Modeling and site-directed mutagenesis, showed that the cavity created by the L348 residue is critical for red light emission. Finally, the combination of Phrixotrix red light-emitting luciferase and Pyrrolidinyl-luciferin analogue produced far red emission (645 nm) with high activity, promising for bioimaging use of hemoglobin cells and tissues.
  • Loading...
    Thumbnail Image
    Item type:Item,
    Leilão reverso para pagamentos por serviços ambientais: uma estratégia para a conservação da natureza
    (Universidade Federal de São Carlos, 2019-12-06)
    Lobo, Liliane Lopes
    ;
    Tonello, Kelly Cristina
    ;
    https://lattes.cnpq.br/3844965971290638
    ;
    https://lattes.cnpq.br/1847127321875893
    Reverse auctions are recent market mechanisms when designed for environmental conservation purposes, with a view to protecting public property on private land, and with ever increasing foreclosures in various countries. In Brazil, the state of São Paulo is a pioneer making use of auctions for payments for environmental services. In addition to the environmental results, this first contact allows the improvement of the design, as well as the incorporation of reflective practices to the owner regarding the importance and valuation of the services provided, as well as the starting point to understand the processes and results generated. The results of this study refer to the analysis of the first five auctions held, one of them being the pilot, which took place in municipalities located in the São Paulo portion of the Vale do Paraíba, aiming at conservation and restoration actions. Conservation auctions were more attractive, and the average price per hectare was lower in this category, justified by the lower cost of actions of this practice. The vast majority of participants are owners, farmers with livestock as their main activity. When the auction systematics are verified, the existence of rounds reflected in a decrease in the bid value, but they are costly in view of the objective of scale gain. Restoration auctions, albeit with a smaller participation, received bids mostly from landowners with up to four fiscal modules, and characterized as high priority areas for conservation actions, as well as a high supply rate in areas of conservation. permanent preservation.
  • Loading...
    Thumbnail Image
    Item type:Item,
    Treinamento em Análise Funcional Baseada em Tentativas para avaliação comportamental em sala comum
    (Universidade Federal de São Carlos, 2019-12-06)
    Ferrari, Isadora Peresi
    ;
    Elias, Nassim Chamel
    ;
    https://lattes.cnpq.br/4216525883778695
    ;
    https://lattes.cnpq.br/3553800803043857
    Trial-based Functional Analysis is an adapted procedure from traditional Functional Analysis methodology to be used among classroom activities. The idea is to investigate problem behavior’s function by experimentally arranging its antecedent and consequent events. Such arrangements verify if problem behavior is maintained by positive reinforcement in form of attention or access to favorite objects, negative reinforcement through escaping from academic demands, or automatic reinforcement by self-stimulation. The present study investigated to what extent literature empirically supports TBFA in regular classrooms through a literature review. It also conducted a second study to verify the effects of a training protocol over a Sign Language Teacher to conduct Trial-based Functional Analysis to assess problem behavior at regular classroom with death children. To do so, a training protocol was implemented in five phases: Initial evaluation, Pre-training + Baseline, Training and Post-training. The Training Program effects were observed by calculating and comparing procedural fidelity while the teacher was conducting the Trial-based FA at Baseline, Role-play, Post-training and Tracking 1, 2 and 3 phases. The Inter Observer Agreement was 80%. The overall results indicate that the Training helped to improve teachers’ repertoire to conduct Trial-based FA even when not all conditions have reached 100% of procedural fidelity. Literature review indicated that ethical and methodological aspects, as well as the lack of data from post evaluation impacts on the natural environment may not contribute to itsfeasibility of implementation. Data from teacher training showed that the teacher was able to conduct TBFA with high integrity and with few time trainings. However, training costs, application in regular classroom and the absence of teacher’s autonomy to conduct the assessment did not support TBFA implementation in regular Classroom. Discussions and future research suggestions are further presented.
  • Loading...
    Thumbnail Image
    Item type:Item,
    O desenvolvimento profissional na relação pesquisa-formação-prática: Programa Observatório da Educação e os professores que ensinam matemática
    (Universidade Federal de São Carlos, 2019-12-06)
    Francisco, Aline Luz Mesquita
    ;
    Gama, Renata Prenstteter
    ;
    https://lattes.cnpq.br/4153572041829838
    ;
    https://lattes.cnpq.br/6054827228273862
    This research has as its theme the existing relationship in research-training-practice for the professional development of teachers who teach mathematics in the early years of elementary school. Within the framework of the Observatory Education Program (OBEDUC), it aims to answer the following guiding question: What do the academic productions elaborated in the context of the Observatory Education Program about the professional development in the research-training-practice relation of the teacher that teaches Mathematics in the early years indicate? With research, it is expected as a general objective to understand the relation research-training-practice in the professional development process of teachers who teach mathematics. The main specific objectives aim to bring reflection on the contributions of the OBEDUC Program to teachers in the aspects of pedagogical, formative and investigative practice, as well as identifying practices that promote professional development in the context of research-training-practice for the teacher who teaches mathematics. This program was chosen considering that it had most of the projects approved in the area of Mathematics in Graduate Programs, with important contributions in the area and for teachers. It also consisted of a space that involved research-training linked to practice. In order to meet the defined objectives, we initially conducted an overview of the academic research produced and linked to OBEDUC, and obtained from a database of post-doctoral research. Those related to mathematics in the early years of elementary school and those related to teaching and learning were selected. The data were analyzed through a bibliographic survey called State of Art. Subsequently, a meta-analytic study of a selection including six works focusing on the teacher and carried out from research-training in teaching practice in the school environment was performed. This research has as theoretical base authors that deal with the professional development of the teacher and also that deal with the professional development of the teacher who teaches Mathematics, relevant themes for the foundation of this study proposal. The results indicate that the knowledge coming from the teacher's practice allied to the reflection and teaching investigation in the OBEDUC Program brought the critical and reflexive analysis from the practice, which provided the expansion of specific and methodological knowledge with indications of changes in the teaching action. The activities provided for in this training proposal, such as reflection, formative meetings, expansion and evaluation of their own specific and methodological knowledge, stimulation of research and changes in practice with the experiences resulting from the reflective movement, made possible the professional development of the teacher. It is also worth highlighting the importance of initiatives aimed at teacher education such as OBEDUC, a program that led to a new research perspective, valuing the teacher as a prominent component and the knowledge brought by this professional.
  • Loading...
    Thumbnail Image
    Item type:Item,
    Tradução audiovisual da Libras a partir do gênero institucional de divulgação científica: o caso da série "Que curso eu faço?" do LAbI/UFSCar
    (Universidade Federal de São Carlos, 2019-12-06)
    Melo, Lis Maximo e
    ;
    Nascimento, Marcus Vinícius Batista
    ;
    https://lattes.cnpq.br/1893740212695470
    ;
    https://lattes.cnpq.br/4092162953681244
    The recent production of accessible films in Brazilian Sign Language (Libras) was driven by the Brazilian Inclusion Law, 13.146 / 2015, which provided for the use of the Libras screen-inset TV for sound and image broadcasting in all audiovisual political pieces. In 2016 the National Film Agency (ANCINE) publicized the Normative Instruction No. 128, which regulated the accessibility of all Brazilian film production. As a result, videos from different genres have been translated into Libras. However, because the field is extremely new and the training of these professionals is still under construction, it is not known for sure which strategies these professionals use to deal with this translation demand. In this sense, this paper aims to describe the translation strategies from institutional videos of scientific dissemination genre produced by the Open Laboratory of Interactivity for the Dissemination of Scientific and Technological Knowledge (LAbI) conducted by two translators of the Federal University of São Carlos (UFSCar). The research, which has a qualitative approach, has as its theoretical and methodological foundation the Bakhtinian perspective of language studies, studies of sign language translation and interpretation, and studies on audiovisual language. The methodological device for describing translation strategies is the simple self-confrontation in which the participating translators watched the video they translated and commented on the choices and strategies as they watched themselves in activity. The data were transcribed according to Nascimento's (2016) proposal for monomodal and intermodal transcription and the reported strategies were described, separating in two categories: (i) the themes in common to both translators and (ii) the individual themes reported. Common strategies were recognized from previous study, teamwork, target audience and enunciativediscoursive resources. This research is expected to contribute directly to the training of Libras translators to act in the socially demanded audiovisual productions today.
  • Loading...
    Thumbnail Image
    Item type:Item,
    Dinâmica dissipativa em sistemas quânticos fortemente interagentes
    (Universidade Federal de São Carlos, 2019-12-06)
    Diniz, Emanuel Cardozo
    ;
    Villas-Bôas, Celso Jorge
    ;
    https://lattes.cnpq.br/5700887540085418
    ;
    https://lattes.cnpq.br/6386818101091884
    In this thesis we investigate the dissipative dynamics in strongly interacting quantum systems. The dissipative dynamics that we investigate has relevance in the generation of non-classic states of light, such as the squeezed states, besides being useful in the description of phenomena give by dipole induced transparency (DIT) that are analogous to the behavior that occurs in the electromagnetic induced transparency (EIT). We show that the dissipative dynamics given by the microscopic master equation, plays a crucial role to understand correct stationary and temporal dynamics in strongly interacting systems described by spin chains. This thesis is organized in six chapters. In the second chapter, we introduce, the dissipative formalisms necessary to describe the dissipative dynamics that will be used in the following sections of this thesis. In the chapter 3, we report briefly the basic radiation-matter interaction model, i.e., the Rabi model, and its implementation in the context of circuit quantum electrodynamics (circuit QED). In the chapter 4, we provide the basic concepts of two mode squeezed states (TMSS). Next, we describe the results obtained to implement a protocol that aims to generate the two mode squeezed states in the context of circuit QED, besides discussing all the realistic dissipative mechanisms and their effects on the generation of the TMSS. In the chapter 5, we briefly discuss the phenomenon of electromagnetically induced transparency (EIT) that will be essential to understand the result of transparency induced by dipole-dipole coupling (DIT). We also introduce an approach on the effects of periodic boundary conditions on the DIT phenomenon. Finally, in the chapter 6, we discuss the dissipative dynamics in strongly interacting spin chains and clarify the correct dissipative formalism to investigate the dynamics in these systems.
  • Loading...
    Thumbnail Image
    Item type:Item,
    Seleção de variáveis: uma aplicação a dados de moinho de cimento
    (Universidade Federal de São Carlos, 2019-12-07)
    Higashizawa, Lissa Kido
    ;
    Paz, Rosineide Fernando da
    ;
    https://lattes.cnpq.br/0773010734982168
    ;
    Zuanetti, Daiane Aparecida
    ;
    https://lattes.cnpq.br/8352484284929824
    Having as object of study a certain mill that produces cement, we use two methods of variable selection, LASSO and stepwise, to identify variables that influence the engine power and, consequently, impact the cement production. We also considered lagged covariates at 4 different times and performed the diagnostic analysis for the estimated models with identification of influential points. Among all the analyzed models, we chose the selection that was made by stepwise without influential points and without time lags, which has the lowest value for the selection criteria, AIC and BIC.
  • «
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • ...
  • 571
  • »
Siga as redes sociais do SIBi
Contato

Repositório Institucional da UFSCar (RI UFSCar)

Av. Biblioteca Comunitária, Campus São Carlos

Rod. Washington Luís, km 235 - SP-310

São Carlos, SP, 13565-905 (16) 3351-8477

Email: repositorio@ufscar.br

Acessos ao repositorio.ufscar.br
Consultar estatísticas de acesso

DSpace software copyright © 2002-2026 LYRASIS

  • Accessibility settings
  • Privacy policy
  • End User Agreement