Teses não defendidas no IFAL

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Codigestão anaeróbia de vinhaça e melaço de cana-de-açúcar para produção de h2
(INSTITUTO FEDERAL DE ALAGOAS - Ifal, 2023-10-23) Chaves, Taciana Carneiro; Amorim, Eduardo Lucena Cavalcante de; https://orcid.org/0000-0002-7349-9055; http://lattes.cnpq.br/5647462671079561; Almeida, Renata Maria Rosas Garcia; https://orcid.org/0000-0003-1331-8619; http://lattes.cnpq.br/3745446778086537; Silva, Carlos Eduardo de Farias; http://lattes.cnpq.br/0395823528382046; Meili, Lucas; http://lattes.cnpq.br/3802018064427795; Coelho, Dayana de Gusmão; https://orcid.org/0000-0002-5170-3449; http://lattes.cnpq.br/1255714800013638; Peiter , Fernanda Santana; http://lattes.cnpq.br/0958176908010538
Industrial residues abundant in carbohydrates, lipids, and proteins are currently gaining prominence as alternative sources of renewable energy. Wastes from the sugar and alcohol agroindustry, such as vinasse and sugarcane molasses, are rich in organic matter and, therefore, when subjected to the anaerobic digestion process, can be converted into hydrogen, organic acids, and methane. Maintaining control of specific operational parameters enables the inhibition of methane formation and favors H2 and acid production. In this context, the objective of this study was to use the co-fermentation of vinasse and molasses to produce hydrogen. To this end, the first phase of the work (F1) consisted of the experimental planning of the Simplex Lattice mixture with batch tests to evaluate the synergistic and antagonistic effects of vinasse (V) and molasses (M). The purpose of this step was to find the percentage composition of the substrates (100% vinasse: V100/M0 = R1, 75% vinasse + 25% molasses: V75/M25 = R2, 50% vinasse + 50% molasses: V50/M50 = R3, 25% vinasse + 75% molasses: V25/M75 = R4, 100% molasses: V0/M100 = R5) that would result in maximum H2 production besides using the highest possible percentage of vinasse, given the significative environmental impact of this final residue from the sugar and alcohol industry. From the best condition verified in F1, the second phase (F2), also in batch reactors, tested the influence of the initial concentration regarding chemical oxygen demand (COD 6 and 9 g/L), temperature (T between 35 and 45 °C) and initial pH (5.5 and 6.5) based on a full factorial design (23). The study evaluated two response variables: the volumetric production rate (VHPRCODapl) and the volumetric hydrogen yield (VHYCODapl). Results obtained in F1 showed that using vinasse at 75% or more caused instability in H2 production. The maximum values of 595.63 mL- 2/g-CODapl and 50.63 mL-H2/(g-CODapl.d) occurred in the V50/M50 condition, which, according to the Tukey test, were statistically similar to those observed at V25/M75 and V0/M100. Vinasse and molasses interacted synergistically in the mixtures. Highly significant (p ≤ 0.05) quadratic models with good fits were obtained for yield (R2 = 0.98) and H2 production rate (R2 = 0.92). In F2, with the initial composition of the feed fixed at 50% of each substrate, maximum values of VHYCODapl (1.56 L-H2/g-CODapl) and VHPRDQOapl (54.98 mL-H2/g-CODapl/d) were recorded in the condition of lower temperature and higher COD and pH. pH was the factor that exerted the greatest influence with a positive effect on the response variables, while temperature revealed a negatively influential effect. The effect of COD was negligible concerning VHY and VHPR. The linear models obtained were significant and well adjusted (with R2 coefficients above 0.9), relating the factors COD, pH, and temperature.
Estratégias de aprendizagem no ensino remoto emergencial do Instituto Federal de Alagoas
(CENTRO UNIVERSITÁRIO DE MACEIÓ – UNIMA | Afya, 2025-09-23) Melo, Helisabety Barros Mendes de; Mendonça, Adriana de Lima; http://lattes.cnpq.br/0381713043828464; Mendes Junior, Walcler de Lima; http://lattes.cnpq.br/6938727316741941; Pereira, Jesana Batista; http://lattes.cnpq.br/2329848572181989; Junkes, Janaína Accordi; http://lattes.cnpq.br/7777461824456062; Santos, Pedro Henrique Simonard; http://lattes.cnpq.br/0615985683640773
Emergency Remote Teaching (ERT) during the COVID-19 pandemic posed significant challenges for education. Students, for instance, had to adapt to the sudden transition to an online environment, and many struggled to maintain focus and manage their studies independently, making it necessary to adopt Learning Strategies. In this context, this research investigates the extent to which students enrolled in technical programs at the Federal Institute of Alagoas (IFAL) - Maceió Campus - made use of any type of Learning Strategy during ERT, aiming to understand how they coped with the demands of this new teaching format. With a qualitative-quantitative approach, a case study methodology was adopted, articulating two main procedures: Content Analysis of the students’ reports submitted as part of formative assessments during ERT, based on Bardin (2016), and the application of the Learning Strategies Assessment Scale for Vocational Education Students (EAVAP-EP) developed by Pereira; Santos; Ferraz (2020). The qualitative analysis of the students' narratives highlighted issues related to infrastructure and technology, teaching methodology, learning difficulties, and mental health—factors that compromised the appropriate use of these strategies. Students’ perceptions also revealed weaknesses in the institutional planning of ERT and gaps in the provision of technological, pedagogical, and psychological support. The EAVAP-EP, a validated instrument composed of 33 items distributed across three dimensions (Cognitive Strategies, Metacognitive Strategies, and Absence of Dysfunctional Metacognitive Strategies), was completed by 189 students. Statistical analysis was performed using R software (version 4.3.3), employing descriptive techniques. Quantitative data revealed satisfactory use of Metacognitive Strategies and, to a lesser extent, Cognitive Strategies. However, some students exhibited behaviors detrimental to learning (Absence of Dysfunctional Metacognitive Strategies). The results reinforce the urgent need, in light of the challenges faced, to implement pedagogical policies that systematically develop Learning Strategies, promote student autonomy, and foster better conditions for coping with adverse educational contexts.
Estudantes adultos no ensino superior do Ifal-Maceió: os desafios e conquistas no regresso à vida acadêmica
(INSTITUTO FEDERAL DE ALAGOAS - Ifal, 2023-03-30) Pereira Neto, Lauro Lopes; Almeida, Leandro da Silva; http://lattes.cnpq.br/9704136908005990; Almeida, Leandro da Silva; http://lattes.cnpq.br/9704136908005990; Almeida, Ana Maria Tomás de; 0000-0003-0036-312X; Dias, Pedro Miguel Brito da Silva; 000-0002-1936-5363; Canal, Cláudia Patrocinio Pedroza; http://lattes.cnpq.br/8984420280257670; Fior, Camila Alves; http://lattes.cnpq.br/7965367748728519
Higher Education (HE) in Brazil - created to serve a socioeconomic elite - has historically kept excluded a huge portion of the low-income population from its conviviality. In recent years, this reality has changed with the arrival of a "new public" that, benefited by the expansion and democratization movements, enters the HE with peculiar life trajectories, after years apart from formal education. It is in this context that the studies of this thesis are inserted, which aimed: (i) to deepen the concept of "new publics" in HE; (ii) to characterize the non-traditional students who access HE; (iii) to identify the academic expectations and the anticipated difficulties of adaptation when accessing HE; (iv) to appreciate the impact of the variables gender, monthly income and satisfactory digital condition for adaptation to remote teaching; and (vi) to investigate the psychosocial factors that had the most impact on the satisfaction with the academic experience of students during the offer of Emergency Remote Education. The results pointed out that the historical social and economic inequality of these students was aggravated even more with the advent of the pandemic, imposing new challenges to the academic transition process and uncovering a new reality of exclusion: digital inequality. The results identified students dissatisfied with their own economic resources, since they did not have the digital infrastructure conditions necessary to follow the remote activities. This significantly impacted their emotional state, leading them to develop alarming levels of anxiety, stress, and psychological discomfort. However, despite all the difficulties, the students were motivated to continue their studies and convinced that only the investment in their academic formation could guarantee them the desired social and economic ascension. It is hoped that this thesis can help higher education institutions to better understand the psychosocial profile of non-traditional students, to identify their expectations and difficulties experienced in the process of academic transition and adaptation, and to make inferences about the effectiveness of the educational contexts and the institutional actions involved in this process. Thus, anticipating actions to mitigate learning inequalities in order to promote and provide equitable learning conditions to the diverse and heterogeneous universe of its student population.
Estudantes do ensino superior: variáveis pessoais e contextuais relacionadas ao insucesso acadêmico e evasão escolar
(2022) Faria, Ana Amália Gomes de Barros Torres; Almeida, Leandro da Silva; Lima, Licínio Carlos Viana da Silva; Almeida, Leandro da Silva; Silva, José Maria de Castro; Monteiro, Sílvia Correia; Couñago, Maria Adelina Guisande
Over the past few decades, research around adaptation and academic success in higher education has increased. A greater number and diversity of students enter this level of education, justifying greater concerns about their academic performance and consequent completion of training. Data collection took place longitudinally at the Instituto Federal de Alagoas-Ifal (Campus Maceió) and included three studies with different samples, between 317 and 420 students from different courses, distributed between degrees or bachelors. At first, even before the pandemic, we applied the questionnaires in person. Subsequently, with the Covid-19 pandemic and the transition of activities to Emergency Remote Teaching (ERE), all the research was done from contacts and the application of online questionnaires. The study considered the following steps: the first took place at the time of enrollment, between the 1st and 3rd week after admission, where students were invited to participate in the study and provide information regarding sociodemographic characteristics; your previous academic career; as well as expectations and anticipated difficulties related to the chosen course. The second stage took place between the 6th and 8th week of classes since the beginning of the course. In this phase, information related to the academic experiences of these students was collected; and inserted questions about the socio-emotional impact of the Covid-19 pandemic. In the third stage, at the end of the school year, the process of adapting students to their courses and their intention to drop out of the course was evaluated. The thesis compiles four articles, including an introduction, a theoretical reference chapter and methodological course and a conclusion. The articles that made up the thesis were: 1- “Academic Adaptation of 1st Year Students: Promoting Success and Permanence at the University”; 2- “Academic Expectations and Difficulties in Higher Education Entrants: Analysis in Function of Gender and Quota System”; 3- “Effects of Remote Learning on Higher Education students”; 4-"Difficulties in the academic adaptation of higher education students in times of a pandemic". The results point to the complexity of the convergence of personal and contextual variables in the process of academic success and school dropout. In this process, the need for public policies to gradually decrease the retention and dropout rates stands out, as well as the design of institutional strategies to support the career development of these students, mainly through integration activities and support services. specialized.
Síndrome da pessoa rígida (stiff-person syndrome): estudo de caso de uma bailarina clássica e as contribuições da equipe multiprofissional e interdisciplinar no tratamento
(INSTITUTO FEDERAL DE ALAGOAS - Ifal, 2022-12-14) Hartmann, Cassio; Lopes, Gabriel César Dias; https://orcid.org/0000-0002-4977-5873; http://lattes.cnpq.br/5261828712554239; Vieira, Fábio da Silva Ferreira; https://orcid.org/0000-0002-7841-5260; http://lattes.cnpq.br/7205230411663842; Silva, Uanderson Pereira da; http://lattes.cnpq.br/1566400339988273; Barbosa, Estélio Silva; http://lattes.cnpq.br/9917115701695838; Samuel, Bensson V
Rare diseases are defined by the small number of people affected: 65 individuals per-100,000 people. According to the World Health Organization (WHO), they are characterized by a wide diversity of signs and symptoms, which vary from illness to illness, as well as from person to person affected by the same condition. It can be said that an autoimmune disease is due to the malfunction of the immune system, causing the body to attack its own tissues, it is still not known what triggers autoimmune diseases and symptoms vary according to the disease and part of the body. affected body, as in the case of the Rigid Person Syndrome (SPR), which is characterized by the rigidity of the muscles of the trunk and extremities due to episodes of painful spasms, is a rare autoimmune neurological disease (LEVY, 1999 apud YAGAN et al, 2014). On December 8 (8), 2022, Canadian singer Celine Dion announced in the international press that she was diagnosed with the aforementioned syndrome. Currently, Brazil has approximately thirteen (13) million people who have some rare disease and many of them take several years to reach a diagnosis. Its importance is remarkable for society, for health professionals and for scientists, inherent to the concept of reliable and safe rare diseases. However, the expansion of this Stiff Person Syndrome requires scientific knowledge that supports the phenomenological and phenomenal understanding, as well as the interpretation and importance of a Multiprofessional and Interdisciplinary Team focused on Stiff Person Syndrome. The decision to research, investigate and present the categorization and relevance of the Multiprofessional and Interdisciplinary Health Team in the care of people affected by the Stiff-Person Syndrome - Stiff-Person Syndrome, came from the need to fill a gap that little exists in the literature, since that there are few studies that will contribute in an axiological way. Therefore, it was necessary to carry out a qualitative survey based on the theory of complexity and on the assumption of the premise in question, the following question arises: As the interaction of the fourteen (14) professionals in the health areas, reflects in a study of case, with a Classical Ballerina, affected by the Stiff-Person Syndrome? The present research aims to investigate and present the categorization and relevance of the multiprofessional and interdisciplinary health team in the attention to the Stiff-Person Syndrome. It is a case study that is used to provide detailed information about an individual and is characterized as qualitative research, one that identifies relevant factors of an object in order to analyze the content of documents or realities. The present research intends to provide subsidies for professionals from different health areas, in order to raise awareness and give theoretical and practical support to the prescription of programs of activities and physical exercises, together with a Multiprofessional and Interdisciplinary Team, to this end, it is intended to publish this research in scientific journals. It is concluded, therefore, that although the SPR was discovered in 1956, further research is still necessary to identify and fill a gap regarding the effective treatment of this syndrome, as well as the effects of the practice of activities and physical exercises on the improvement of motor activity in people affected by the Rigid Person Syndrome.
Sistema de computação em borda para controle preditivo de veículos autoguiados em redes sem fio sujeitas à degradação
(2023) Omena, Rômulo Afonso Luna Vianna de; Santos, Danilo Freire de Souza; Perkusich, Angelo; Lima, Antonio Marcus Nogueira; Silva, Jaidilson Jó da; Brito, Alisson Vasconcelos de; Pereira, Carlos Eduardo; Valadares, Dalton Cézane Gomes
Automated Guided Vehicles (AGVs) are essential for industry material transportation. In the Industry 4.0 and Industrial Internet of Things scenario, the AGV fleet is expected to be connected and integrated into the factory management system, being flexible and adapting to new demands. AGV control systems with fixed path navigation may not meet these requirements. Edge computing brings cloud resources to the network’s edge, making them closer to users. These resources can be accessed through a wireless network and applied to industrial demands. The AGVs can benefit from this when offloading tasks that require more computing resources to the edge server. However, the wireless network in the industrial environment is subject to degradation due to interference, signal reflections, shadowing effects, and electromagnetic wave absorption, among other challenges. The AGV, as a mobile robot, may traverse areas where the signal is degraded, increasing risks of collisions and accidents. Results of experiments suggest that Model Predictive Control (MPC) executed at the edge server, combined with a delay and packet loss compensation strategy implemented in the robot, can be used to mitigate these network degradations. In sequence, a two-tier architecture with MPCs is proposed to control multiple AGVs. The first tier, executed on the edge server, plans the trajectory of the AGVs globally, preventing collisions of the AGVs with fixed obstacles and each other. In the computer embedded in the AGV, the compensator used in the previous experiments gives place to a trajectory-tracking MPC, which must receive the trajectory of the respective AGV from the edge server and track it. Results of experiments carried out in four validation scenarios indicate that from the proposed architecture, it is possible to drive the AGVs without collisions, even in the communication network’s occurrence of delays and packet losses. In addition, tasks that demand more computational resources are offloaded to the edge server so that the computer embedded in the AGV can have more restricted resources, reducing costs and battery consumption.

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