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Uma abordagem baseada em árvores de decisão para a análise da estabilidade angular do rotor
(Universidade Federal de São Carlos, 2021-12-06)
Cunha, Guilherme Luiz da
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Fernandes, Ricardo Augusto Souza
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https://lattes.cnpq.br/0880243208789454
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Fernandes, Tatiane Cristina da Costa
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https://lattes.cnpq.br/2590102586758022
The power system security assessment is essential to ensure the supply of electrical energy and the feasibility of the operation. Among these analyses, the study of the rotor angle stability aims to ensure that the electromechanical modes of the system are well damped and, for that, it is common that the methods employed make use of mathematical models of the electric power system. However, the dependence on mathematical models, potentially, makes the evaluation methods sensitive to variations in parameters and changes in the network that have not been adequately represented, mainly in realtime applications. Currently, Smart Grids proposes to offer greater monitoring capacity and sample rates that allow real-time analysis. Concomitantly, the advances in distributed and cloud computing have encouraged the use of machine learning techniques to solve various problems using the massive amount of data available. In this sense, this work proposes to make use of the measurements made available by phasor measurement units to evaluate the feasibility of using decision trees in the analysis of the rotor angle stability. For stability analysis at small disturbances, a decentralized approach based on individual decision trees and data from phasor measurement units allocated in the generator buses is applied. In this approach, each decision tree uses only local measurements to evaluate the rotor angle small-signal stability, in this way, the classification can be carried out even when there is loss of information from specific generators or failure in the communication system. When the system is subjected to a large disturbance, a second method is employed, which is based on a centralized decision tree and voltage phasors measured at generator buses from the whole studied system. This last classifier is able to identify instability in the response post fault portion of the system, establishing a trade-off between the number of measurement cycles used and the classifier performance. The results obtained on the IEEE 68-buses system showed the efficiency of the proposed approach. In the classification of small-signal stability, an accuracy of 93% is reached by the distributed trees even in scenarios with contingencies and load variations. About large disturbances was possible to classify with precision the transient stability even with only 1 measurement cycle (96.4%) and with only 3 measurement points along the test system.
Terapia Ocupacional e Cultura quais caminhos estamos trilhando?
(Universidade Federal de São Carlos, 2021-12-06)
Molina, Amanda Mendes
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Silva, Carla Regina
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https://lattes.cnpq.br/6417501858864106
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https://lattes.cnpq.br/1853949547859614
Occupational therapy has expanded it’s expertise’s areas, practices, groups and population to beyond the core health. It’s relation with the culture runs through dimensions, practices, fields and other interfaces, and also perspectives, ethics and other constructions that sustain this interrelation. This research project has as it’s central teme the field of Occupational Therapy and Culture and it’s interfaces, seeking to identify some practices that occupational therapists have been developing on this interface in Brazil. Methodology: From ten interviews with 14 professionals graduated in Occupational Therapy who focus on their area of expertise or study/research Occupational Therapy and Culture interface and are linked to the research group Human Activities and Occupational Therapy (Atividades Humanas e Terapia Ocupacional - AHTO), registered with the National Council Scientific and Technological Development (Conselho Nacional de Desenvolvimento Científico e Tecológico - CNPQ), it was possible to identify key points to deepen the discussion on Occupational Therapy and Culture. Results: From data collected from the interviews, we investigated examples of practice; concepts, definitions and specifics; challenges and difficulties; potentials. Through this study, it was possible to identify that occupational therapists are engaged in the construction of the field of Culture in Occupational Therapy as well as in the construction of knowledge and implementation of practices.
Desafios e soluções de controle e estabilização de robôs bípedes
(Universidade Federal de São Carlos, 2021-12-06)
Catulé, Antônio Pedro de Freitas Barbosa
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Fontes, João Vitor de Carvalho
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https://lattes.cnpq.br/9473668144091435
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https://lattes.cnpq.br/9567069968129829
The use of robots in the human being's daily life has been more and more frequent, whether in the performance of household chores or in the execution of tasks that involve risks. Thus, there is a constant need to search for new possibilities and technologies that provide the realization of such activities. Among the countless fields of research, biped robots are one of the most studied, with the problem of stability being one of the most common. The work aims to carry out a literature review regarding the constructive and control aspects of bipedal robots, in addition to the analysis of the advantages and disadvantages of elements that characterize the development and operationalization of movements, in order to propose improvements in the robot being developed by Department of Mechanical Engineering at UFSCar. Thus, it is concluded that despite being a wide field of study and in constant evolution, it brings as propositions the addition of more degrees of freedom, force sensors and tail removal for the implementation of the biped robot, thus enabling constructive methods and more efficient mobility than those currently used.
Luz, câmera e likes: o trabalho dos youtubers nas mídias digitais
(Universidade Federal de São Carlos, 2021-12-06)
Denari, Giulianna Bueno
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Lima, Jacob Carlos
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https://lattes.cnpq.br/9244132532446607
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https://lattes.cnpq.br/3350689550400145
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https://orcid.org/0000-0002-2714-1642
This thesis aims to comprehend the work processes of content creators for digital platforms, known as YouTubers. The study of digital labor brings forth new possibilities for understanding occupational dynamics and interactions among workers, large companies, and users. Regulations stemming from algorithms, the assignment of responsibilities to workers in managing their time, space, type, and volume of work, complicate the discourses surrounding personal entrepreneurship. YouTube is a digital platform that offers resources for users to create and share video content. For companies, the platform sells advertising space and, primarily, the potential for reach through a massive audience. The central innovation of YouTube lies in the customization of consumed content. Moreover, users themselves not only consume but also create and share content on the platform, enabling deeper identification with their influencers. The guidelines set by the platform dictate the rhythms and work processes, demanding continuous adaptation from YouTubers to ensure the profitability of their endeavors. The work process of YouTubers transcends mere video elaboration and recording; it also involves forming partnerships, bureaucratic management, and the pursuit of expanding their image. With growth in numbers and relevance, YouTubers evolve into a sort of brand, needing to establish connections with other brands through partnerships. The optimistic view of an unpretentious and enjoyable occupation is questioned in the face of exhaustion that arises from the constant pursuit of staying "on top." The research development occurred in two stages and employed a variety of resources. Through online contacts, semi-structured interviews were conducted with YouTubers. Simultaneously, four channels were selected for systematic monitoring of all content produced by and about them. The records were documented in a field notebook, allowing for a reconstruction of their work trajectories. Additionally, secondary quantitative data on income and audience projection were used to comprehend the dynamics outlined by algorithms. The research hypothesizes the fundamental role that YouTubers play in redefining the dynamics of work in digital platforms. YouTubers can be understood as self-entrepreneurs; however, this presumed autonomy is influenced by the actions of the platform's algorithms and the complexity of the digital market. Through this investigation, we aim to examine how YouTubers navigate a landscape marked by dualities and how their practices both shape and are shaped by them. Our research seeks to contribute to a broader understanding of contemporary transformations in the world of work.
O que diz um nome?: reflexões sobre o colonialismo e o Estado-nação em Luanda
(Universidade Federal de São Carlos, 2021-12-07)
Sampaio, Luisa Tui Rodrigues
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Dulley, Iracema Hilário
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https://lattes.cnpq.br/3004789177515766
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https://lattes.cnpq.br/6538471248311973
Names, an important theme for anthropology, present themselves as an interesting starting point for analysis. Following this assertion, this master thesis has as its main focus to show and mobilize names as enunciated from the context of Luanda. In order to understand the possibilities of connections opened by them, as well as what they show, the focus is on the associations made by people, but also present in streets and papers, between names and the context where they are present in a historical perspective, this context being Luanda or Angola as a whole. Thus, names are a way of elaborating colonial relations and the political context in which they are situated. They are also a way in which denunciations of the violence engendered by colonialism are expressed. By producing fixations, displacements, and connections, names show the layers of discourses that mark the colonial and postcolonial context. In this understanding, enunciations about colonialism and the nation-state are evident in the figure of the Popular Movement for the Liberation of Angola (MPLA) - the party that has been in government since independence in 1975. Thus, the argument presented is organized from a deepening debate about the names themselves and, later, in the description of what they show about the colonial presence in the Luanda region as well as about the MPLA's discourse and the idea of national history claimed by it. This master thesis is the result of the connections that the names allow us to make.
Hoje tirei uma foto minha
(Universidade Federal de São Carlos, 2021-12-07)
Camargo, Bruna
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Lôbo, Maria Fernanda
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Pedroza, Cecília
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Gonsales, Bruno
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Araújo, Gabrielle
The movie traces the journey of the director/screenwriter as they craft their self-portrait and engage in a conversation with their identity as a woman with a disability. Using archival footage, performances, and off-screen narration, Bruna shares her life experiences, spanning from her childhood to the film's production. The film is driven by the absence of representation for people with disabilities in the media and the scarcity of images of the director during her adolescence and adult life. It serves as an exploration of subjectivity and the longing to create a visual representation of oneself. The movie bridges the concept of existence with the physical embodiment of the creator, especially when her perception of her body's presence in various spaces, both tangible and artistic, had been denied.
Dia de visita: processos educativos emergentes na perspectiva de educadoras de um centro socioeducativo do estado de São Paulo - Brasil
(Universidade Federal de São Carlos, 2021-12-07)
Santos, André Luiz Pereira Alves dos
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Onofre, Elenice Maria Cammarosano
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https://lattes.cnpq.br/9391211432183878
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https://lattes.cnpq.br/4989137712351420
This study aimed to analyze the educational processes emerging from the social practice of Visitation Day from the perspective of educators of a Socio-Educational Center in the state of São Paulo. The involvement with the theme arose through my work as an educator in a Center for Socio-Educational Measures of Detention. Driven by the experience in this space and by the contributions of the theme to socioeducation, we established as a research question: what educational processes emerge from the social practice of the Visitation Day, from the perspective of the technical team? We understand that the Visiting Day is one of the pedagogical moments in these institutions and that educational processes emerge that can establish relationships and social bonds that enhance socialization and education. As a starting point, we studied some concepts that permeate the lives and experiences of young people serving detention, the function of the institution as an educational and pedagogical space, and the legal documents regarding Visitation Day. To weave these concepts, we used authors from the research line Social Practices and Educational Processes who discuss concepts of education, dialogicity, humanization, and conscientization such as Paulo Freire, Ernani Maria Fiori, and Enrique Dussel, in dialogue with the socioeducational scholar, Antônio Carlos Gomes da Costa. This is qualitative research and we conducted interviews through videoconferences with three educators from the technical team of a Socio-Educational Center. The material collected in the interviews was transcribed and organized, emerging four focuses of analysis: A) Visiting Day, a unique day: for some, it is eagerly awaited, for others, the worst day of the week; B) The meaning of Visiting Day after meeting with the family; C) So it's the mother who holds the gun; D) The boys were in a great uproar - in times of pandemic COVID-19 communication of young people with their families. The educators emphasize that the Visiting Day generates feelings and sensations in young people and that they are educated in these encounters. In the trajectory of this study, the pandemic of COVID-19 made us rethink the way we do research and the institutions of deprivation and restriction of liberty also had to seek other forms of communication. The meetings held remotely provided moments of learning, reflection, and understanding between the researcher and the educators, contributing to the formation process of both. Therefore, the study makes it possible that the dialog initiated here may contribute to reflections and understandings about the Visiting Day and the field of social-education.
Avaliação da acessibilidade ao emprego de individuos em condição de exclusão social
(Universidade Federal de São Carlos, 2021-12-07)
Segadilha dos Santos, Ana Beatriz Pereira
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Sanches, Suely da Penha
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https://lattes.cnpq.br/3857424839674606
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https://lattes.cnpq.br/1519870967702558
Every day people need to travel to participate in different activities spread around the city. If for any reason an individual is prevented from participating in their activities, in the intended and predetermined location, they may be considered socially excluded. The concept of accessibility can be used as a tool to measure social exclusion and identify the differences between the travel patterns of different groups. It is important to understand differences in accessibility levels to define urban planning processes and evaluate existing public policies, so that interventions in transport and land use measures can be elaborated considering social differences, mitigating inequalities in access to work. This paper evaluates the accessibility of job opportunities of three different groups, considering the level of social exclusion of workers in Recife, with feel transport and employment data. Six modes of transport and a combination of modes were considered for the analysis. The results showed that accessibility levels vary between social exclusion and the groups with low level of exclusion have 70% higher accessibility than groups with more excluded. The GIS analysis also identify the city areas and transport modes that have lower accessibility levels, this information can be used to elaborate land use and transport policies directed for require areas, to improve sustainable modes.
Uso de técnicas de aprendizado de máquina para a elaboração de modelos de suscetibilidade à ocorrência de incêndios florestais nas áreas de proteção ambiental do Mosaico de Áreas Protegidas Sertão Veredas-Peruaçu, MG
(Universidade Federal de São Carlos, 2021-12-07)
Dias, Lívia Caroline César
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Shimabukuro, Yosio Edemir
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https://lattes.cnpq.br/1913003589198061
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Moschini, Luiz Eduardo
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https://lattes.cnpq.br/2728357583462262
The Cerrado has been under strong pressure from the agricultural frontier in recent decades, with protected areas being almost the only remaining areas with some degree of conservation of this biome in Brazil. However, the imaginary lines that separate these conserved areas from anthropized areas have not been sufficient and as a consequence, wildfires have increasingly devastated these once protected environments. Geoprocessing tools have played an important role in enabling the mapping of these areas and in identifying more vulnerable areas, while machine learning techniques have made it possible to create models to predict the occurrence of wildfires in the near future in certain regions. In this work we seek to associate the geoprocessing tools with the machine learning techniques to be able to create for the Environmental Protection Areas of the Sertão Veredas Peruaçu Mosaic a forest fire predictive models. For this, we consider climatic variables (temperature, relative humidity, wind speed and precipitation), environmental (altitude, slope, NDVI, Hydrographic Distance), anthropogenic (Distance from Roads, Population Density, Distance of Ocupations and Land Use and Land Cover) and soil fuel moisture index (fine fuel moisture code, Duff moisture code and drought index) in order to explain when, where and why fire occurs in the region. In addition, these areas are composed of veredas environments of great relevance to the Cerrado and with an important role in the carbon stock, and for this reason we evaluate the quantification of organic carbon in these veredas. The choice of the best forest fire occurrence model by the logistic regression method was based on the Akaike Information Criterion. For each Environmental Protection Area (EPA), a final model was generated with a set of different variables, but all models showed high performance in predicting forest fires. The results of the final models showed that the Area Under the Curve (AUC), which is the model's hit rate, was greater than 95% for each of the three APA's. Another parameter used to assess the effectiveness of the models was the R² value, which presented values close to 1 in the final models, confirming that these models were adjusted. As for the concentration of organic carbon in the vereda soil, the results showed that this peat soil demonstrates the capacity to store carbon. The concentration of organic carbon in the arboreal area of the vereda is up to 20 times higher than in the cerrado strictu senso area.
Intermittent drying and draft tube design for spouted bed
(Universidade Federal de São Carlos, 2021-12-08)
Brito, Ronaldo Correia de
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Béttega, Rodrigo
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https://lattes.cnpq.br/1379682125857376
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Freire, José Teixeira
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https://lattes.cnpq.br/2270677706718167
The conventional spouted bed has presented several limitations that restrict the use on an industrial scale. Thus, studies of different methodologies and configurations have been performed to overcome such limitations. Limited processing capacity (scaling-up) and energy issues are some of the main problems considered from an industrial point of view. Alternatives as a heat recovery system lost in the exhaust air, intermittent drying, and draft tube can be promising and have not been explored in the spouted bed. Therefore, the main objective of this Ph.D. thesis is to design a spouted bed with a heat recovery system lost in the exhaust air, coupling the methodology of the intermittency and the use of the draft tube. Two types of intermittency (reduction and total interruption of the air flow) and five different intermittency profiles have been evaluated, including the use of time-variant intermittency ratios. Alumina, soybean, and barley have been used as particulate materials. Regarding the internal devices, three different configurations have been employed: without, nonporous, and open-sided. Based on particle image velocimetry (PTV), a new draft tube is designed for the equipment proposed, i.e., a spouted bed with a heat recovery system built according to the results obtained and the design criteria of our research group. Thus, the current Ph.D. thesis contributed to obtain energy-efficient equipment with suitable and feasible characteristics for industrial applications.
Avaliação da influência de parâmetros físico-químicos na concentração de composto químico em snack frito: emprego de ferramentas quimiométricas e estatística
(Universidade Federal de São Carlos, 2021-12-08)
Ragazi, Gabriel Bernardes Cabreira
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Pereira Filho, Edenir Rodrigues
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https://lattes.cnpq.br/3394181280355442
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https://lattes.cnpq.br/5790556039838615
PepsiCo presents an extensive product portfolio, and it is one of the world's leading food companies. Among its segments, the Salty Snacks category is one of the most important to the company, featuring global brands such as Lays, Cheetos, Ruffles and Doritos. Snacks are a popular form of meal among consumers and provide convenience, besides they are easily accessible and satisfy short-term hunger. Therefore, they meet the demand of the urbanized world where agility has been increasingly desired. The consolidation of PepsiCo in the market comes from several factors, one of them is the guarantee of always offering a quality product. Therefore, the company always seeks to understand how each parameter and characteristic of the raw materials used in the production process can impact the products that the consumers will receive. In this thesis, it was evaluated the correlation of total solids content with the concentrations of a certain chemical compound (confidential) in a fried snack. In addition, different parts of the chip of this snack were evaluated to verify in which of them the concentration of the chemical compound was more pronounced. The use of chemometrics in this evaluation allowed the observation of the effects of variables and interactions between them, being important to understand the processes that were being monitored. With the use of statistical and chemometric tools, such as t test, Tukey test and PCA, it could be verified that higher levels of total solids in the studied raw material tend to present a higher concentration of the chemical compound X in the fried snack, while the part A (extremities) of the chip has a higher concentration of the compound. In addition, part A is significantly different from the other studied parts (B, C and D), both when the raw material has high and low total solids. As parts B, C and D do not show significant difference between them, considering that part D represents the entire chip, it could be observed that even part A presenting high concentrations of compound X, its impact is not significant on the final product.
Controle policromático de luz aplicado à produção de microalgas
(Universidade Federal de São Carlos, 2021-12-08)
Guedes, Vanessa Campos
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Lombardi, Ana Teresa
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Cerri, Marcel Otavio
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https://lattes.cnpq.br/6737850858443813
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https://lattes.cnpq.br/7999741482353508
Microalgae have drawn the attention of the biotechnology industry for being natural synthesizers of high added value products such as β-carotene, astaxanthin, lutein, docosahexaenoic acid, proteins, and pigments. However, its biotechnological exploration is far behind when compared to the use of yeasts and bacteria. The main technological challenge that needs to be overcome is light attenuation, which provides these microorganisms with an inhomogeneous light environment, implying non-optimized growth. Considering these premises, the main objective of this Thesis was to develop an automatic control of photosynthetically active radiation (PAR), using Fuzzy logic, in order to optimize productivity and reduce costs in the production process. And for the full development of the polychromatic light controller, the study was divided into five stages: i) the first one was responsible for providing all the necessary experimental apparatus for the controlled and uncontrolled cultures used for the validation of the proposed system, which includes two light panels, the power controller circuit, and a special capacitor. Each luminous panel was made up of white, red, green and blue LEDs. The power circuit, made up of transistors and resistors, allows the individual manipulation of the intensity of each wavelength. The special condenser was developed with a Peltier chip, eliminating the need to use another thermal bath in the process, reducing costs and simplifying the apparatus used; ii) the second stage included the development of a PAR sensor, which is the indispensable system for monitoring the PAR during cultivation and also for guiding the controller. The developed system was patented and was ten times cheaper than commercial sensors available on the market; iii) the third stage included the development of the software responsible for monitoring and controlling the variables of the photobioreactor, which was registered as SUPERSYS_Photo®, being therefore the most important interface during the execution of crops, saving the data, configuring the controller set points such as the ideal PAR, the emission wavelength, the photoperiods, as well as the gas feed rate; iv) the fourth step was essential to characterize the effects of light quality on the biochemical fraction of Scenedesmus obliquus (not yet discussed in the literature), which allowed us to understand the biochemical behavior of the species when subjected to different wavelengths (white, blue, red and mixture of blue and red). These results were essential for defining the wavelength used as a setpoint in the light controller, optimizing the production of proteins in the final composition of the cultures, which, according to the results presented, Scenedemus obliquus synthesizes a greater fraction of proteins when cultivated under blue light compared to conventional white light; v) the fifth and final stage actually included the development of the polychromatic light controller based on Fuzzy logic, which was able to increase cell productivity by more than 200% in Scendemus obliquus cultures and reduce power costs by 30% electrical. Therefore, in general, this research has greatly contributed to the development of processes, control and automation in microalgal cultures, paving the way for an expansion of the scale of cultivation with a favorable cost/benefit ratio.
Da oferta da educação infantil em tempo integral à integralidade na educação: um estudo sobre o município de São Carlos/SP
(Universidade Federal de São Carlos, 2021-12-08)
Yabuki, Michele
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Tomazzetti, Cleonice Maria
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https://lattes.cnpq.br/4821077407620769
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https://lattes.cnpq.br/5135310705989815
We aim to present in this work the trajectory of Full-time Early Childhood Education and how this education modality has been configured historically and politically in the municipality of São Carlos, through bibliographic research revising authors whose works concern its development at national and municipal levels. We seek to analyze how the theme of Early Childhood Education has been presented in academic productions and for that we resort to the State of the Question as the first method. To outline the legal norms of Full-time Education that seek Integral Education and the concepts that surround these themes, we resort to bibliographic research as a second method and we come to the conclusion that the two concepts together are destined to offer a public quality policy that is based on children's rights to education. Finally, to search for the paths traced by the municipality of São Carlos in relation to the provision of Early Childhood Education, we used documentary research in the municipality's Education Department as a method. Research has shown that it is not enough just to offer full-time early childhood education, increasing the time the child stays in school, but to offer an integral and quality education, designed for that time. As a result, we found statistical data from the municipality that demonstrate a development in the quest to achieve the goals established in official municipal and national documents in relation to full-time Early Childhood Education, but as it was found during the studies, the municipality still needs to make the effort to provide a Full-Time Integral Education.
Entre renováveis e não renováveis: o setor de energia na agenda governamental brasileira entre 1995 e 2014
(Universidade Federal de São Carlos, 2021-12-08)
Duarte, Cristiano Parra
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Capella, Ana Cláudia Niedhardt
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https://lattes.cnpq.br/5810332148425938
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https://lattes.cnpq.br/2318750874408975
This dissertation analyzes the characteristics of the Brazilian policy agenda related to the energy sector to verify the governmental priorities (longitudinally and transversally), at the federal level, between 1995 and 2014, a period that compounds both governments Fernando Henrique Cardoso and Luiz Inácio Lula da Silva, and the Dilma Rousseff’s first term. To do so, the analysis focus on the attention of the Executive (Presidency, Ministry of Mines and Energy and National Council for Energy Policy), the Legislative, and the Indirect Administration (National Electric Energy Agency, National Agency of Petroleum, Natural Gas and Biofuels and Energy Research Company). The attention of these arenas and institutions is analyzed based on presidential investiture speeches, messages to the National Congress, executive decrees, provisional measures, ministerial decrees, resolutions from the regulatory agencies and the sectorial council, technical notes from the Energy Research Company, constitutional amendments, ordinary laws, and legislative decrees. Based on the Punctuated Equilibrium Theory, created by Baumgartner and Jones, and a methodology that combines content analysis, coding processes, database construction, and statistical treatment, used and recognized internationally by the Comparative Agendas Project, this dissertation undertakes qualitative analyzes based on data content, as well as quantitative analyzes based on frequency and correlation analyses. As result, it is pointed out that the policy agenda related to the energy sector is quite diversified and that priorities fluctuate considerably over the years, delimiting periods of incremental adjustments, as well as expressive changes. It is also identified that renewable energies had attention increased in PT governments (even though non-renewable energies are among the priorities), while in Cardoso governments the priorities are turned to the electricity and oil and natural gas sectors. Furthermore, it is argued that between 1995 and 2014 the energy sector had two distinct policy images, one during the Cardoso’s governments and the other during the PT’s governments. In this perspective, the set of elements around two factors, the energy crisis during 2001-2002s and the election of Lula, changes the policy image, as well as enabling the process of diversification of the Brazilian energy matrix and the entry of renewable energies issues on the policy agenda. Finally, it is highlighted that there are important differences in the Executive, Legislative and Indirect Administration agendas and that relevant associations are noted between the priorities of Indirect Administration and the Executive. Furthermore, there is a tendency for the Executive to usually direct the National Congress's attention on the energy sector. These findings reinforce the argument that the energy sector is more insulated in the Executive and has a predominance of attention in technical and bureaucratic institutions.
Membrana de celulose bacteriana regenerada aplicada em embalagens de alimentos
(Universidade Federal de São Carlos, 2021-12-09)
Generoso, Amanda Lyane
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Silva, Caio Marcio Paranhos da
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https://lattes.cnpq.br/7793686262868668
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https://lattes.cnpq.br/2559297457767111
Traditional food packaging has the function of protecting and conserving as much as possible the packaged food against spoilage caused by damage environmental conditions, acting as an inert barrier, enabling its handling, transport and distribution safely and efficiently. To meet consumer demand for products with superior qualities, safer, healthier and with less preservatives, research aimed at improving functional packaging, such as active and intelligent packaging, which prolongs stability and/or indicates the packaged product quality, have been developed. Currently, the plastic packaging is the most used in the world due to its characteristics that include lightness, low cost and high performance, generating a huge volume of polluting solid waste, as a result of the disposal of this material. The development of packaging made of biodegradable materials, from natural sources, such as bacterial cellulose, have been by the need not only to reduce, but also to replace the use of plastic in the packaging of food products. Bacterial cellulose is quite versatile, the incorporation of this biopolymer in the production of nanocomposites for the manufacture of food packaging is a major advance in the search for more sustainable. Bacterial cellulose packaging is water resistant, biodegradable and with the incorporation of additives can present antioxidants and antibacterials. In order to reduce production costs, by-products of the food industry have been studied as alternative sources of substrate seeking to expand the use of bacterial cellulose, which is still limited to high-value niche markets. In the present work, alternatives are presented latest and most sustainable food packaging production employing regenerated bacterial cellulose and its prospects for the future.
A graduação em Medicina: um relato de experiência
(Universidade Federal de São Carlos, 2021-12-10)
Rossi, Giulia Zanata
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Santos, Sigrid de Sousa
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https://lattes.cnpq.br/0475600621927610
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https://lattes.cnpq.br/5781023178214041
The graduation in medicine at the Federal University of São Carlos marked a period of great discoveries and personal and professional growth. Taking care of people is a privilege that involves a lot of seriousness, dedication to studies and skills to be achieved. This Course Conclusion Work is based on a reflective narrative referring to my trajectory in the medical course at the Federal University of São Carlos, which was divided into three cycles lasting two years each. During the last cycle of graduation, I experienced the beginning of the COVID-19 pandemic, which was a remarkable period of great uncertainty, many adaptations to the new reality and great growth in medicine. In addition to academic training, this narrative refers to experiences during further training, and at the end there is a memorial about all activities developed during graduation. I am very proud and feel secure in receiving a medical degree to be able to practice this profession, which for me is so wonderful and full of possibilities.
Retorno ao trabalho após licença-maternidade: vivência de mães trabalhadoras
(Universidade Federal de São Carlos, 2021-12-10)
Santos, Letícia Lima dos
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Mininel, Vivian Aline
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https://lattes.cnpq.br/4557060516800427
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https://lattes.cnpq.br/5006931114256573
Objective: comprehend impacts of return-to-work after maternity leave. Method: qualitative study with mothers who return to work regardless of kind of job in São Paulo, Brazil. Seventeen women have participated in online interviews following a validated script of open questions, between February and August 2021. Data analysis has been done simultaneously of data collected through thematic approach and the sample was delimited by saturation. Results: return to work influenced breastfeeding even in home office; duality between career and the care of the babies cause job dissatisfaction, because of frustration on performance; lack of support with baby caring (daycare centers), reinforced by the pandemic. Conclusions: return to work impacts breastfeeding and quality of mother-child bond mainly in women without maternity-leave benefits. Employers and government should look into this problem and reinforce progressive and protective return to work to promote mother-child health.
Arranjos institucionais de manejo e extrativismo do açaí nas áreas de uso comum na comunidade de São Carlos do Jamari (RO)
(Universidade Federal de São Carlos, 2021-12-10)
Paula, Milena Camargo de
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Candido, Silvio Eduardo Alvarez
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https://lattes.cnpq.br/0194644249955417
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Gonçalves, Juliano Costa
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https://lattes.cnpq.br/1803562162325019
Among the Amazon resources used by traditional and riverside communities, the collection of açaí has stood out due to the growing national and international demand for this forest product, and for being characterized as a symbol for Amazonian biodiversity. Empirical analyzes have indicated the potential of populations to structure social arrangements that enable the sustainable use of common resources, such as açaí in the Amazon. Incentives for policies for the inclusion of populations in the management of extractive territories and in the management of local resources indicate that they are not degraded, tending to keep community organizations economically sustainable. In this case study, we analyze the community that works in the collection of açaí-da-mata (Euterpe precatoria Mart.) within the Amazon forest, in the region of the baixo Rio Madeira, in the state of Rondônia. It refers to the community of São Carlos do Jamari, district of Porto Velho. The general objective of this research was to describe and analyze how institutional arrangements for the management and extraction of açaí (Euterpe precatoria Mart.) are organized in areas of common use in the community of São Carlos do Jamari (RO). The methodological procedures were qualitatively based, through a literature review, documental research and a script for semi-open interviews. The documents collected were carried out using the technique of content analysis by exploring the material, processing and interpreting the results, in an attempt to understand what are the interferences in the dynamics of collective organization for the use of açai groves in São Carlos do Jamari, as well as, the implications for the conservation of extracted resources. Following the principles of institutional design and variables for the governance of long-term common resources, it is considered that the institutional arrangement found on the açaí resource does not demonstrate collective action that impacts on a better quality of the collected açaí. External natures, mainly those that refer to the influences of market demand and the absence and presence of the State, generating a disruption of the traditional agreements that allowed for the proper management of açaí, but do not represent a total degradation of resources.
Drivers e barreiras à inovação sustentável na construção civil: evidências do Brasil
(Universidade Federal de São Carlos, 2021-12-10)
Moura, Pedro Henrique Martins
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Delai, Ivete
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https://lattes.cnpq.br/7054145506480670
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https://lattes.cnpq.br/2132039191883668
The intensification of competition between companies has made innovation a fundamental competitive strategy for companies. At the same time, irreversible climate change, environmental pollution, and resource scarcity have made sustainable innovation an important concern in society and an additional competitive factor for companies in general. In this scenario, given the negative environmental impacts caused by the civil construction sector, and aiming at its minimization, sustainable buildings (green buildings) emerged. Although this constructive model has been used worldwide for some time, the understanding of the factors that motivate (drivers) or hinder (barriers) its wide adoption is not yet consolidated. The current literature on the subject presents two important findings: (1) few studies on the subject were developed with a focus on developing countries, such as Brazil; and (2) the existence of contextual variation (country and region) in the factors that motivate or hinder the adoption of this type of innovation. Given this context, the objective of this study was to identify the drivers and barriers to sustainable construction in Brazil. To this end, two systematic literature reviews (RSL) were carried out to build the theoretical model, which supported the study of multiple cases in Brazilian companies in the civil construction sector. There were seven cases selected among construction companies, suppliers, and the certifying body, representing three groups of stakeholders in this sector. As a result, six main drivers were identified that lead organizations active in the sector to implement sustainable construction (certified or not) and seven barriers that hinder such adoption, arising from both internal and external factors to the construction companies. Externally, the main drivers identified were related to consumers (clients' awareness of sustainable buildings, economic benefits offered to clients, and the existence of market demand), and the main barriers identified were related to the government (speaks of government policies and regulations and lack of financial resources and incentives), the local community (resistance to the shift to sustainable buildings) and suppliers (lack of manufacturers and suppliers of sustainable materials). Internally, the main drivers were increased economic benefits for the organization, improved image, and reputation, as well as increased competitive advantage and effective project planning and control. While the main barriers are related to the difficulty in obtaining certifications and the high initial investment of this type of project. Finally, it is concluded that the results point out the drivers and barriers to sustainable construction in Brazil and confront several points of the researched theory. This work contributes to the dissemination of knowledge about sustainable construction since greater knowledge about the drivers and barriers to sustainable construction in Brazil can facilitate the process of adopting sustainable projects and arouse greater interest in investments.
Entre o prazer e a dor: uma etnografia em contextos digitais de dominação feminina
(Universidade Federal de São Carlos, 2021-12-12)
Barbosa, Bruno Henrique Benichio Alves
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Leite Júnior, Jorge
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https://lattes.cnpq.br/7253561448346772
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https://lattes.cnpq.br/6247043084122986
The purpose of the present research is to analyze the erotic practices in the context of Brazilian BDSM. As an analytical cut, I chose Female Domination, which is configured as one of the sexual role categories of the BDSM community (Bondage / Discipline, Domination / Submission or Sadism / Masochism). Dominant women use digital media to promote spaces of sociability, to legitimize their sexuality, and to textualize the desires and dilemmas that surround their daily lives. Through the multidisciplinarity of contemporary studies in digital contexts, this research conducted a digital ethnography of three blogspots to achieve an understanding of what Female Domination is, what experiences of gender and sexuality are related to these performances, and what are the goals that drive Female Dominators to use digital media. Furthermore, I mobilize as theoretical references the concepts of Judith Butler and Michel Foucault to analyze the intensity with which these practices are configured in a convergent and/or divergent way, in relation to normative systems about sex, gender, and desire and I use Eva Illouz's sociological propositions about love and emotions as a theoretical basis to understand the affective relationships that are waged within Female Domination.