Browsing by Issue Date, starting with "2024-04-04"

Filter results by year or month

Now showing 1 - 20 of 3920

Efeitos do programa Isupport-br na sobrecarga, sintomas depressivos e ansiosos de cuidadores informais de pessoas que vivem com demência: ensaio clínico randomizado
(Universidade Federal de São Carlos, 2024-04-04)
Rocha, Luana Aparecida da
;
Gratão, Aline Cristina Martins
;
https://lattes.cnpq.br/7873339343111119
;
https://orcid.org/0000-0002-8508-0251
;
https://lattes.cnpq.br/7073285909100937
Informal caregivers of people living with dementia are exposed to physical and emotional health problems, as the disease progresses, the people being cared for require greater support in activities of daily living, and caregivers often do not receive adequate support to this coping, which can develop greater perceptions of overload and anxious and depressive symptoms. Therefore, accessible tools such as the iSupport for Dementia online program are necessary to overcome barriers imposed on these caregivers, whether socioeconomic, physical or access to information, and provide education, development of socio-emotional skills and social support. Objective: To analyze the effects of the iSupport program, adapted for Brazil, on the burden, depressive and anxious symptoms of informal caregivers of people living with dementia. Method: This randomized clinical trial was carried out from January 2022 to July 2023, with a sample of 162 informal caregivers of people living with dementia, from all regions of Brazil, randomly allocated into two groups: intervention (n = 77) and control (n = 85). The intervention group (IG) had free access and use of the iSupport-Brasil (iSupport-BR) platform for three months. Simultaneously, the control group (CG) accessed the website of the Brazilian Alzheimer's Association (ABRAz) and the Care Guide for the Elderly. Pre- and postintervention assessments were carried out, consisting of sociodemographic data, burden assessment - Single-item Scale and Zarit Burden Interview (ZBI) and assessment of anxious and depressive symptoms (Hospital Anxiety and Depression Scale - HADS). All ethical procedures were respected. Results: The majority of caregivers were from the Southeast Region, with an average age of around 50 years, the majority were female, married, highly educated (12 years or more of study) and of white ethnicity. For the IG, the intention-to-treat (ITT) analysis demonstrated a significant decrease in anxiety in the post-test (p=0.02). The analysis per protocol (pp) also demonstrated a significant decrease in overload (ZBI p<0.01) and anxiety (p<0.01) for the GI in the post-test. No statistically significant effects were found for depression in the GI, although the scores decreased (p=0.09, p= 0.07 – pp and ITT respectively). For the CG, the regression model estimates indicate that, on average, there is a worsening of scores except for anxiety. Conclusion: The iSupport-BR program is effective in reducing the perception of overload and symptoms such as anxiety. Therefore, its use within the family context is recommended for informal caregivers of people living with dementia as an alternative support based on issues of education and development of socio-emotional skills. Future research with samples in other contexts, such as social/economic vulnerability and low education, may contribute to the consolidation of the iSupport-BR program for caregivers of people living with dementia in Brazil.
Uma avaliação experimental entre MongoDB e Mongochain utilizando o benchmark YCSB+T
(Universidade Federal de São Carlos, 2024-04-04)
Morceli, Caio Lazarini
;
Ciferri, Ricardo Rodrigues
;
https://lattes.cnpq.br/8382221522817502
;
https://orcid.org/0000-0001-5944-8246
;
https://lattes.cnpq.br/2919576536463693
The Atomicity, Consistency, Isolation and Durability (ACID) properties found in a Database Management System (DBMS) are normally related to relational Databases (DB). On the other hand, the emergence of the Not Just SQL (NoSQL) paradigm arrived to meet the demands that relational DBs left something to be desired, such as scalability, availability and ease of handling a larger volume of data. Consequently, the NoSQL ecosystem has thrived by taking advantage of the Basically Available, Light State and Eventual Consistency (BASE) concepts that prioritize scalability and availability. However, the use of these concepts also brought disadvantages, the most considerable of which was that it crucified the consistency of the ACID model to prioritize availability and performance. This contrast generated new research niches on this issue. Therefore, Mongochain was created in an attempt to couple the ACID and BASE models to enjoy their benefits. This software used an innovative technology, blockchain, which has the necessary characteristics to guarantee ACID and BASE, as it can execute reliable and transparent transactions in a distributed and decentralized network. In addition to Mongochain, MongoDB has also brought improvements over time. One of them was support for transactions that preserve ACID properties in multiple documents. In addition, MongoDB provides several consistency levels for working with data persistence, but there is no specific study that analyzes the performance of these levels. Therefore, this work seeks to carry out a study on MongoDB’s consistency levels, checking which of them guarantee the consistency property included in the ACID model and evaluating the correctness of Mongochain. Therefore, it was necessary to use a benchmark that would allow performance and consistency tests to be carried out, which are found in YCSB+T. Finally, the results show that the stronger consistency levels of MongoDB and Mongochain were able to guarantee data consistency.
O uso de línguas eletrônicas voltamétricas para a detecção de adulteração em alimentos
(Universidade Federal de São Carlos, 2024-04-04)
Ichikura, Júlia Tiemy
;
Freitas, Jhonys Machado de
;
https://lattes.cnpq.br/2068549631838036
;
Rocha Filho, Romeu Cardozo
;
https://lattes.cnpq.br/5200717413563550
THE USE OF VOLTAMMETRIC ELECTRONIC TONGUES FOR DETECTING ADULTERATION IN FOOD is briefly revised through three examples reported in the literature on the subject. Specifically, these examples involve the use of this advantageous tool in adulteration analyses, the electronic tongue, to identify adulterants in samples of honey, wine, and coffee. Electronic tongues are systems with electrochemical sensors associated with software known as intelligent sensory algorithms (chemometric methods). The three works were chosen due to two main reasons. Firstly, they demonstrate how advantageous the voltammetric electronic tongues are compared to other types of analytical techniques previously reported in the literature, in particular their speed, accuracy, and sensitivity. The other reason arises from the fact that the foods used in their respective sample sets are among the most adulterated and defrauded in the world in recent years. Thus, this study presents methodologies developed using electronic tongues, based on voltammetric techniques of detection (more specifically, Square-Wave Voltammetry and Cyclic Voltammetry) and chemometric methods, to identify adulterations in samples of some human consumption products.
Proposição de uma Arquitetura Baseada na Tecnologia Blockchain para Logística Reversa: Um Estudo em uma Indústria de Painéis de Madeira
(Universidade Federal de São Carlos, 2024-04-05)
Barretti, Jayson Wilson
;
Mendes, Juliana Veiga
;
https://lattes.cnpq.br/5692633697407656
;
https://orcid.org/0000-0003-4514-2558
;
https://lattes.cnpq.br/5717421131776851
Given the environmental crisis resulting from the rampant consumption of natural resources and the lack of material and waste reuse, organizations are taking responsibility for adopting impactful measures to mitigate environmental and societal damage. The convergence of environmental, social, and governance aspects through ESG is essential for promoting sustainable resilience. In this context, the present study proposes a blockchain-based architecture to reintegrate waste into the production process in manufacturing companies. Objectives include identifying and applying blockchain architectures to facilitate this return, aiming to investigate their support for reverse logistics and production planning, creating a secure and decentralized technological ecosystem for real-time data transmission and material tracking, promoting waste reuse, and driving sustainability. The methodology adopted encompasses theoretical research to substantiate the topics addressed, the proposition of the blockchain architecture to enable the return of materials to manufacturing, and its conceptual application in a reconstituted wood panel industry. The delimitation of the work is based on theoretical research and a systematic literature review, establishing criteria for content analysis and reporting of results in the proposal of a conceptual architecture and its theoretical exemplification of application in the cited industry. Specialized literature highlights blockchain as advantageous for participants in reverse supply chains; however, there are no studies on its application in manufacturing, especially through reverse logistics. This research concludes the relevance of blockchain technology for sustainable supply chain management, offering valuable insights to science by exploring its traceability and transparency capabilities. The implications of promoting sustainable practices and reducing natural resource consumption can foster more sustainable societies. In the meantime, integrating blockchain with other emerging technologies offers opportunities to redesign processes, increase efficiency, and adopt more sustainable business models for managers and organizations.
Avaliação da influência de diferentes solos na degradação de hidrogel de amido modificado com EDTAD
(Universidade Federal de São Carlos, 2024-04-05)
Moura-Murari, Adriana Sheyla
;
Delforno, Tiago Palladino
;
https://lattes.cnpq.br/8149468011291406
;
https://orcid.org/0000-0002-1705-0763
;
Duarte, Iolanda Cristina Silveira
This study evaluated the influence of the degradation of a new hydrogel produced from EDTAD-modified starch in two different soils and the bacterial community involved in this process. The soils are an argisol, which was called "soil A", and a red oxisol, called "soil B". The soils were characterized and the argisol presented 12.4% of organic matter and pH 5.1, and the red oxisol, 11.6% of organic matter and pH 4.6. The argisol also has more residual soil moisture and higher amounts of micro and macronutrients, such as phosphorus, calcium, magnesium, and other physical characteristics such as cation exchange capacity, while the oxisol has more calcium phosphate and aluminum. The biodegradation test was performed using the Bartha respirometric method, measuring biodegradation by titrating the KOH solution that captured theCO2 emitted by the microbiota present in the respirometers with soil and hydrogel sample. It was observed that the biodegradation of the hydrogel in the argisol was more efficient, but more thorough and linear. After the end of the degradation experiments, the soil DNA was extracted from the DNA and sequenced for a qualitative analysis of the existing microorganisms. 340 to 480 genetic profiles were found in each one of the samples, with the highest diversity being in the soil sample B with hydrogel post-biodegradation, and the lowest, in soil A post-biodegradation. The fact that two different soils were used in this study shows how important their physicochemical properties are in the activity of the microorganisms present in the biodegradation process, since the sample incubated in the soil, richer in organic matter (albeit with a slight difference), micro and macronutrients and higher acidity obtained a more complete and uniform biodegradation, while soil B, with opposite characteristics, obtained a lower biodegradation of the hydrogel, even though it was incubated for a longer time, a fact that may have been influenced by a higher concentration of aluminium, which influences a lower bacterial activity.
Restauração ecológica por semeadura direta: trajetória e análise multicriterial
(Universidade Federal de São Carlos, 2024-04-05)
Costa, Glória Fabiani Leão da
;
Piña-Rodrigues, Fátima Conceição Márquez
;
https://lattes.cnpq.br/1475369713141675
;
https://orcid.org/0000-0001-8713-448X
;
https://lattes.cnpq.br/7510204418276540
Direct seeding is a promising and constantly evolving forest restoration technique. Monitoring your trajectory is essential to identify gaps and improvements. This work was divided into two stages, where, in Chapter 1, we sought to analyze the trajectory of a direct seeding area over 60 months; and in Chapter 2, evaluate whether direct seeding was efficient in restoring ecological processes essential for its stability, resilience and reliability. For the trajectory, monitoring was carried out at 30 days, 24 and 60 months in permanent plots, the composition, diversity, phytosociology and dynamics were evaluated. To evaluate ecological functions, a protocol based on the MESMIS method was used, obtaining the Ecological Functionality Consolidation Index (EFCI), with 25 indicators, defined by descriptors and reference scenarios. Sowing (SD) was compared with areas of forest remnants (AR) and restoration area by planting seedlings (RAD). At 60 months, the area had a density of 14,031 plants.ha-1. The plant assemblage was able to maintain the composition of established species, with an increase in richness (S=36), without the exclusion of any. SD presented higher values in the descriptors of soil fertility (0.07 SD; 0.06 RAD; 0.08 AR) and functional diversity (0.08; 0.06; 0.15) compared to RAD, but demonstrated the lowest value for community diversity (0.06; 0.07; 0.10), control and management (0.06; 0.08; 0.37) and soil and litter protection (0.15; 0. 17; 0.23). Over 60 months, the trajectory of the plant assemblage demonstrated stability in its composition, enabled the entry of new species, and presented a structure similar to natural forests in the initial stage of succession. SD demonstrated potential for the return of ecological functions, requiring the inclusion of adaptive management and continuous monitoring in the coming months.
Avaliação do ciclo de vida de um laminado sintético espalmado de PVC para produção de palmilhas
(Universidade Federal de São Carlos, 2024-04-08)
Dutra, Felipe Juliano
;
Paiva, Jane Maria Faulstich de
;
https://lattes.cnpq.br/7926832511513537
;
Moris, Virgínia Aparecida da Silva
;
https://lattes.cnpq.br/1101036108950133
Brazil is currently the fifth largest footwear producer in the world, accounting for 3.9% of global production. In Brazil, there is a tendency to increase the use of synthetic laminates in footwear, mainly due to the variety of colors, prints, thicknesses, and applications with emphasis on PU (polyurethane) and PVC (polyvinyl chloride) laminates. Although PVC is an important alternative in the manufacture of footwear, its use is still questioned from an environmental point of view, mainly due to the emissions throughout the production process, such as dioxins. Therefore, the objective of this work is to present the main environmental hotspots of a synthetic PVC laminate used to make insoles, by carrying out an LCA from cradle to gate, based on a case study. Four impact categories were assessed, based on literature: abiotic depletion, eutrophication, human toxicity, and global warming. The results indicate that the main environmental hotspots occur upstream of the laminate production process for three of the four categories analyzed: production of plasticizer (non-phthalic) for the abiotic depletion and eutrophication categories, and production of emulsion PVC resin (E) for the human toxicity category. The production process of the assessed laminate directly contributes to the potential impacts observed for the global warming category. The possible actions to reduce potential environmental impacts assessed in this study are: the use of vegetable plasticizers and the use of energy from renewable sources, among which, the replacement of plasticizer (non-phthalic) by soybean oil proved to be the most advantageous scenario in the environmental point of view.
Proposta de modelos para estimativa do fator de redução da resistência à compressão de pilares castelados carregados axialmente
(Universidade Federal de São Carlos, 2024-04-08)
Gomes, Arthur Filipe Freire
;
Christoforo, André Luis
;
https://lattes.cnpq.br/7623383075429186
;
https://orcid.org/0000-0002-4066-080X
;
https://lattes.cnpq.br/7112458774359627
Currently, castellated columns have been increasingly used in buildings due to their flexibility, easy compatibility and potential savings given their lower steel consumption. However, there is a lack of research and design methods for these elements. The influence of the openings on the load capacity of castellated columns has not yet been clearly defined in the literature. Studies on castellated beams can be easily found, however, studies on such profiles acting as pillars are scarce. In this context, numerical models based on finite elements developed with the aid of ABAQUS® software are developed. This parametric study with 1328 numerical models aims to evaluate the influence of the three main types of castellated openings (Peiner, Litzka and Anglo-Saxon), three expansion factors (k - 1.33, 1.50 and 1.67) and eight slenderness indices (λ - 25, 50, 75, 100, 125, 150, 175 and 200) in the behavior of axially loaded columns. In order to validate the numerical model, the load capacity obtained through a nonlinear analysis was compared with the valuesfound in three experimental studies and in ABNT NBR 8800 (2008 After validation, the resistant capacity of each model was determined through a nonlinear physical and geometric analysis around the largest and least inertia axis. The loads obtained by the castellated and full-web column were compared. The resistance reduction factors associated with global buckling (χ) for castellated columns were also compared to the values proposed by ABNT NBR 8800 (2008). Castellated columns had a lower resistance capacity than the full-web elements, especially the short columns. Castellated columns with larger openings showed a greater reduction in resistance capacity. Furthermore, the curve proposed by ABNT NBR 8800 (2008) may overestimate the resistant capacity of castellated columns for reduced slenderness indices (λ0) lower than 0.75. Finally, equations based on regression models were developed (with R2 values above 94.00) to estimate the resistance reduction factor associated with global buckling (χ) of the columns evaluated within the scope of this study.
“Òrìsà Ńjẹ, Ilé Asé Ńjẹ- Os Orixás Comem, O Terreiro Come”: uma etnografia da sacralização de animais em um Terreiro de Umbanda Traçada
(Universidade Federal de São Carlos, 2024-04-08)
Silva, Julia Aparecida Rodrigues da
;
Vander Velden, Felipe Ferreira
;
https://lattes.cnpq.br/7289231173735671
;
https://lattes.cnpq.br/9718783230484134
;
https://orcid.org/0000-0003-0249-8474
In the rituals of African religions, the sacralization of animals is an essential element in the connection between humans and deities: by immolating specific animals, the aim is to offer (feed) the deity and then distribute the animal's meat to everyone in the terreiro community and other followers present. Through sacralization (sacrifice), the animal's axé will serve as food for the Orixá (and for humans) because it acts and operates certain energy flows. The aim of this ethnography is to understand the foundations and purposes that animal life acquires during the ritual of sacralization in Candomblecist cosmology: where the animal is acquired, the care and place of its stay in the terreiro before undergoing immolation, who immolates and which species are immolated, the precautions (preceito) taken by the Afro-religious, the instruments and supplies that are part of the ritual, the songs and prayers chanted and finally, after the sacralized animal, how the Orixá and the terreiro eat. And finally, to analyze the debates surrounding the political arguments, mostly Christian, that have tried and are trying to ban this practice on the grounds that it is animal cruelty, as well as to verify the importance of this ritual in the view of religious practitioners and their communication with the spiritual plane.
Development of bio-inspired electromechanical devices based on PBMA-b-(PSS-r-PS) amphiphilic block copolymer
(Universidade Federal de São Carlos, 2024-04-08)
Saccardo, Matheus Colovati
;
Scuracchio, Carlos Henrique
;
https://lattes.cnpq.br/0896060959622431
;
https://orcid.org/0000-0002-7723-0213
;
https://lattes.cnpq.br/3993645750766626
Technological advances in the aerospace, biomedical, and robotics industries stimulate the need for innovative and sustainable devices, such as electromechanical devices (EMDs), which are bio-inspired materials capable of mimicking biological systems in appearance, functionality, and operation. For practical applications, EMDs must combine several properties, such as i) high ionic conductivity, ii) flexibility, iii) mechanical resistance, and iv) chemical, thermal, and structural stability. Such properties can be obtained by engineering amphiphilic copolymers, which can self-assemble into well-defined morphologies with nanometric domains. Thus, it is possible to effectively dissociate ionic conductivity from mechanical properties, adjusting the flexibility, Young's modulus, and ionic conductivity according to the size of the blocks and the number of functional groups. Therefore, in this project, reversible addition-fragmentation chain transfer (RAFT) polymerization was used to synthesize the diblock copolymer Poly(butyl methacrylate)-b-(sulfonated polyneopentyl styrene-r-polystyrene) (PBMA-b-( PNeoSS-r-PS)). Subsequent thermolysis of the PNeoSS segments removes the neopentyl group, resulting in a sulfonated polystyrene-r-polystyrene (PSS-r-PS) backbone, yielding an amphiphilic block copolymer with ionic conductivity, which was used to prepare an EMD. In general, it can be concluded that RAFT polymerization is a robust and versatile technique that allows control of the degree of polymerization, molecular weight, polydispersity, and chemical composition of the copolymer. The copolymer presented a molecular weight of 65 kg.mol-1, with a 50% ratio between flexible and rigid blocks, alongside an 8.8% degree of sulfonation, lamellar morphology, capable for enhancing flexibility and ionic conductivity. Finally, the device was tested and characterized electromechanically using an electromechanical characterization system, showing promise for application as a sensor.
Histórico de expansão urbana e análise dos eventos de inundações no rio Sorocaba - SP
(Universidade Federal de São Carlos, 2024-04-08)
Leite, Amanda Rodrigues
;
Arruda, Emerson Martins
;
https://lattes.cnpq.br/3883710507177933
;
https://lattes.cnpq.br/8055631622023281
Cuando la urbanización se produce sin una planificación adecuada, los ríos son vistos como un problema para la ciudad que se desarrolla en sus orillas. El sellado de suelos, la deforestación ribereña, las construcciones incómodas combinadas con la falta de estructuras adecuadas para el drenaje del agua, son solo algunos de los factores que interfieren con el curso natural de los cuerpos de agua urbanos, aumentando significativamente el riesgo de inundaciones. Esta investigación involucra el análisis de la dinámica ambiental del municipio de Sorocaba, así como el levantamiento de las inundaciones ocurridas en el río del mismo nombre, centrándose en el perímetro urbano del citado curso, vislumbrando así una comprensión de la dinámica ambiental, vinculado a aspectos de uso del suelo en sus márgenes, así como a la forma en que se apropia el relieve del área. Según las observaciones esbozadas, se entiende que son necesarias obras encaminadas a revitalizar los ríos urbanos para la calidad ambiental de los cursos de agua y de la propia cuenca, así como proyectos que valoren una mejor planificación urbana, con el objetivo de llegar a las raíces de los problemas relacionados con crecidas e inundaciones fluviales, siendo un factor conciliador en la relación río-ciudad.
Plataforma de encapsulamento de microrganismos em matriz PVA para uso na agricultura como inoculante microbiano
(Universidade Federal de São Carlos, 2024-04-09)
Lodi, Ludimila Araújo
;
Farinas, Cristiane Sanchez
;
https://lattes.cnpq.br/9933650905615452
;
https://orcid.org/0000-0002-9985-190X
;
https://lattes.cnpq.br/8314583698258145
This study aimed to develop novel microbial inoculants for the encapsulation of Bacillus megaterium. Films and microparticles were prepared from polyvinyl alcohol (PVA)-based formulations using casting, emulsion, and spray drying techniques. The materials that best protected the encapsulated bacteria from stresses such as heat, UV light, and agrochemicals were applied in different ways: as a coating on soybean seeds (films), in soils with high salinity (emulsion microparticles), and as a solid inoculant in greenhouse experiments using soybeans with a model plant (spray-dried microparticles). Initially, biodegradable PVA films were developed that were cross-linked with citric acid. At a concentration of 30% (w/v), citric acid reduced the swelling and solubility of the films, increased their resistance to degradation, and influenced the controlled release of the encapsulated bacteria. The films promoted similar germination rates of soybean seeds treated with commercial polymers and outperformed the untreated seeds. This proves their application potential. Microparticles based on PVA/cationic starch were developed using a simple crosslinking/emulsion method, and the effect of the cross-linking agents citric acid (CA), sodium trimetaphosphate (STMP), and bentonite as surface modifiers was investigated. The presence of STMP/bentonite increased the estimated shelf life of this formulation. In high salinity soil tests (200 mM), these microparticles provided a favorable environment for bacterial development, with final cell viability higher than that of the inoculum, even after 7 days of high salinity. Finally, zinc oxide (ZnO) was added to the PVA/cationic starch formulation to produce microparticles by spray drying. The presence of zinc and bacteria in the formulation significantly promoted the production of biomass in the aerial and root zones of soybean plants and enhanced the uptake of phosphorus and zinc when applied as a solid inoculant in greenhouse tests. The results show that the proposed formulations and methods to produce novel microbial inoculants are promising strategies for efficient agricultural applications.
Simulação de configurações de movimentação de um sistema AGV para transporte em posto de pintura especial
(Universidade Federal de São Carlos, 2024-04-09)
Assis, Rafael de
;
Lage Júnior, Murís
;
https://lattes.cnpq.br/9666500788789379
;
https://lattes.cnpq.br/8070604031456208
This dissertation presents a proposed solution for the movement of products in process, simulating the use of AGV vehicles in the special painting process at a manufacturer of drives for the industry. The research objective is to analyze potential productivity gains that AGV can bring to this process, primarily by reducing the lead time, which directly impacts product lead time. Based on the experimentation method that utilizes simulation, this study presents 3 models: the current situation, the implementation of deck lift AGV, and the implementation of tugger AGV. Comparing the models based on performance indicators highlights productivity gains, concluding that the best model is the deck lift AGV, which yields results such as a 99.17% decrease in waiting time and improvements in lead time gain indicators ranging from 33.78% to 92.16%, depending on the type of painting, as well as better space utilization, 84.76% lower compared to the current situation. The characteristic of the deck lift AGV model to transport the product when it is placed in the output buffer of the special painting station has been shown to improve productivity gains, presenting favorable conditions for sector organization and directly influencing management quality and customer satisfaction.
Avaliação de um programa de ensino para cuidadores desenvolverem a linguagem oral das crianças de forma naturalística
(Universidade Federal de São Carlos, 2024-04-09)
Balog, Lívia Gabriela Campos
;
Domeniconi, Camila
;
https://lattes.cnpq.br/9684535663947328
;
https://orcid.org/0000-0003-0486-3543
;
https://lattes.cnpq.br/1305969857928709
This thesis presents three studies that supported the planning, implementation and evaluation of an intervention for caregivers to apply naturalistic strategies to expand children's communication repertoire. Firstly, a systematic review of the literature was carried out with the aim of analyzing methods of teaching parents to develop the language of their children with intellectual disabilities, delays or language impairment, within the family routine. The strategies taught to parents most used by studies were described, as follows: a) follow the child's interest, b) be responsive, c) organize the environment, d) expand the child's communication, e) ask questions d) provide breaks . Discuss the different ways of teaching naturalistic language stimulation strategies to parents, including the increasing use of technologies for teaching and monitoring caregivers. Based on the literature review carried out in Study 2, the objective is to develop and evaluate a remote parenting program to stimulate children's language in the family routine, in the context of social isolation. Although the remote teaching model was well evaluated by caregivers and the study achieved its initial objectives, some limitations were highlighted. Considering the limitations of Study 2, Study 3 was designed and aimed to verify the effect of the program, carried out in person, with phases of instruction, modeling and feedback on parents' behaviors. The results of both studies demonstrated the effectiveness of the intervention in increasing the frequency of use of strategies by parents and in some measures of children's language. Suggestions were proposed for conducting future studies and we hope that the results can help in the development of naturalistic disciplines aimed at caregivers, especially children with ASD, Down Syndrome and delays in language development.
Lebesgue solvability of equations associated to elliptic and canceling linear differential operators with measure data
(Universidade Federal de São Carlos, 2024-04-10)
Biliatto, Victor Sandrin
;
Moonens, Laurent
;
https://orcid.org/0000-0001-6351-2626
;
Picon, Tiago Henrique
;
https://lattes.cnpq.br/7853908129934448
In this thesis, we present new results on the solvability of the equation A*(x,D) f = µ for f in L^p, with complex measure data µ, associated to an elliptic linear differential operator A(x,D) of order m with variable complex coefficients. Our method is based on (m,p)-energy control of µ giving sufficient conditions for solutions when 1 ≤ p < ∞. A particular study is presented in the global setting of Lebesgue solvability for the equation A*(D) f = µ, where A(D) is a homogeneous differential operator with constant coefficients. We also obtain sufficient conditions in the limiting case p = ∞ using new L^1 (global and local) estimates on measures for elliptic and canceling operators, which are interesting on their own.
The coopetitive effect in supply chains: exploring the relationship between multiple supply chains from the focal agent perspective
(Universidade Federal de São Carlos, 2024-04-10)
Brandão, Maicom Sergio
;
Godinho Filho, Moacir
;
https://lattes.cnpq.br/6136685270563354
;
https://lattes.cnpq.br/6709066592331133
;
https://orcid.org/0000-0002-7798-1922
This thesis explores the possibility of a form of interaction between supply chains known as coopetition, which combines cooperation and competition. The main objective is to investigate coopetition among multiple supply chains within an organization from the perspective of supply chain relativism and its implications. This study, organized into six articles, unfolds into two primary streams of inquiry: the perspective of multiple supply chains - resulting in the theoretical framework of the research - and coopetition - providing the basic concepts used in the study. Through a first systematic review, the thesis underscores the significance of the idea of flow as a fundamental concept in understanding the relativism of supply chains, with a particular emphasis on the interaction among material, financial, and information flows. Furthermore, it formalizes the perspective of multiple supply chains as an alternative to the conventional characterization of nodes and links, highlighting the multifaceted nature of supply chain phenomena. Within this vein, it presents the perspective of multiple supply chains as part of organizational discourse from sustainability reports. Besides, the thesis establishes a theoretical framework to investigate coopetition among multiple supply chains. Through a second systematic literature review, it is found that, within the inter-organizational context, there exist various forms of coopetition (technology-based, relationship-based, and channel-based) associated with different supply chains. Through a multiple case study, the execution and cooperative interaction among multiple supply chains are observed, and their similarities and differences concerning inter-organizational coopetition are listed. Finally, through a retrospective case study, it observes how changes in organizational structure can foster the emergence of the distinct supply chains of the organization and shift coopetitive dynamics along the coopetition continuum. The coopetitive effect addressed in this thesis corresponds to interaction founded on a cooperative context occurring among multiple supply chains within an organization - delimited, socialized, and managed by a group of actors - where internal resource scarcity may lead to competition among them. The implications of this interaction can affect not only the focal company but also other links in the supply chain positively or negatively. As contributions, this study proposes that variants of the supply chain term be observed as representatives of the evolution of the research field from the main concepts of phenomenon, orientation, and supply chain management. Considering coopetition, expands the scope of analysis levels to include coopetition among multiple supply chains. Furthermore, the thesis contributes to managerial understanding by proposing strategies to effectively navigate coopetitive dynamics. It emphasizes the importance of identifying core and non-core supply chains, managing power asymmetries among them, and recognizing the role of organizational structure in shaping coopetitive interactions. Additionally, it highlights the importance of mediating elements capable of capturing the global and individual value creation of multiple supply chains. It also underscores the need to differentiate coopetition from a mere supply constraint due to its relational characteristic, thus avoiding tensions and conflicts solely relying on trust among actors to be solved.
Modelagem numérica do perfil térmico e do escoamento de material termoplástico por extrusão em um cabeçote customizado para manufatura aditiva
(Universidade Federal de São Carlos, 2024-04-10)
Santos, André Luiz Grando
;
Silveira, Zilda de Castro
;
https://lattes.cnpq.br/2567496668379673
;
https://orcid.org/0000-0002-5040-0403
;
Lucas, Alessandra de Almeida
This work presents a procedure for modeling and numerical analysis of the flow of a thermoplastic fluid with pseudoplastic behavior applied to a custom miniature vertical head based on twin-screw extrusion for additive manufacturing. It is a case study conducted using the miniature head of an innovative prototype conceived on a laboratory scale for direct manufacturing using the PP RP141 raw material in powder form. The temperature profiles in the head were estimated, and the techniques adopted were validated with experimental data from a prototype of the extruder head. The pressures and flow details in the channels forming the extrusion nozzle (die) were revealed through a 3D model. The dimensionless parameters characteristic of the types of elements that constitute the screws were also determined by a 3D model. A 1D flow model published by another author was modified and coded to predict the pressures and, consequently, the location of the fully filled sections of the screws. This modified model was validated by comparison with documented cases in the literature. Furthermore, the filled sections were simulated using mesh immersion techniques in a 3D model, and details of the complex flow in these sections were discussed. Finally, a comparison of the pressures predicted by the modified 1D model with those obtained by the 3D model revealed a good approximation between the results of these analyses using the technique proposed in this work, thus establishing a procedural roadmap for exploring the processing limits of the unit, screw compositions, process variables, and materials, as well as aiding decision-making in the design stages of other units and improvements of this innovative variant of additive manufacturing.
Caracterização do óxido formado na superfície da junta M5TM/Zircaloy- 4 soldada por resistência e pressão após testes de corrosão em autoclave a 360°C
(Universidade Federal de São Carlos, 2024-04-10)
Soares, Alexandre Roberto
;
Rovere, Carlos Alberto Della
;
https://lattes.cnpq.br/8141224513975606
;
https://orcid.org/0000-0003-1534-0561
;
Silva, Rodrigo da
The nuclear fuel cycle involves uranium mining and chemistry, fuel manufacturing, fuel element operation in reactors, and post-irradiation treatment. The casing tubes are produced with zirconium alloys, as they have a low neutron capture cross-section. Welding processes in nuclear applications are electron beam, laser, resistance, projection and spot welding. The welds undergo destructive and non-destructive tests to characterize the joint, tube bursting tests, metallography, and corrosion. The present work sought to characterize the oxide layer formed on the surface of a joint composed of zirconium M5TM and Zircaloy-4 alloys welded by the Resistance Pressure Welding (RPW) process. Autoclave corrosion tests were carried out to simulate operational conditions, identifying specific oxidation/corrosion mechanisms after analysis. The results obtained show that during the corrosion process, both the surface of the plug and the tube oxidize, forming an oxide layer composed predominantly of the m-ZrO2 phase, adhering and continuing on the surface of both materials. Furthermore, small Zr(Fe,Cr)2 precipitates present in the buffer microstructure oxidize, remaining on the surface of the oxide layer. For the welded bead, the rapid growth of the oxide leads to the formation of a continuous nodule of white oxide, which presents a high fraction of the t-ZrO2 phase. The growth of this white oxide nodule is accompanied by the penetration of the oxide into the bead reinforcement at the plug/weld bead interface region. As the corrosion process progresses, complete oxidation of the Zr(Fe,Cr)2 precipitates occurs, leading to the formation of voluminous oxide nodules composed of a mixture of phases: t-ZrO2, m-ZrO2, Cr2O3 and Fe2O3. Although the oxides observed were obtained under more severe conditions than usual, they proved to be safe in terms of depth and thickness, not drastically affecting the weld bead region even after five corrosion cycles.
Contribuições para modelos gerais de diagnóstico cognitivo
(Universidade Federal de São Carlos, 2024-04-11)
Fernandes, Renato da Silva
;
Bazán Guzmán, Jorge Luis
;
https://lattes.cnpq.br/8040998023074358
;
https://orcid.org/0000-0003-3918-8795
;
https://lattes.cnpq.br/2796219868581062
Cognitive Diagnosis Models (CDMs) are discrete latent variable models that aim to determine an individual's pattern of possession of skills or attributes based on their test responses. This class includes the general diagnosis models, whose formulation allows various other CDMs to be obtained as a special case of the former. This work presents contributions to these general models under a Bayesian approach. First, we present Bayesian formulations for two general diagnosis models, the Generalized DINA (G-DINA) model, designed for dichotomous responses; and the General Polytomous Diagnosis Model (GPDM), designed for polytomous responses. These formulations include new sets of constraints on the item parameters to improve the estimation and interpretability of the model parameters. For both models, an estimation method was implemented using the JAGS software, which is available in this thesis. Moreover, for both models, a simulation study was designed to evaluate the parameters recovery accuracy of this Bayesian estimation method and the results were compared with those obtained with the standard classical estimation method. In both studies, the results indicate that the proposed Bayesian estimation method recovers all parameters with accuracy equal to or better than the classical estimation method under the evaluated scenarios. In an example of application, we use the proposed models to examine the responses of 1111 college students to the Beck Depression Inventory (BDI) using a CDM in the modeling process. In the first instance, we compare the results obtained with the DINA model (adopted in the original formulation of this methodology) and the G-DINA model, both applied to the dichotomized data. In the second instance, we compare the results obtained with the G-DINA model, applied to dichotomized data, and the GPDM, applied to original polytomous data. At last, in another example of application, we present a new recommendation system for movies that incorporates a CDM in its formulation. The CDM is used to predict the ratings that a user would give to each item and make recommendations based on these predictions. The proposed method was applied to two movie datasets and its performance compared to other recommendation systems found in the literature, presenting results superior to the competing methods.
Qualidade de vida, saúde e o autocuidado em homens com câncer
(Universidade Federal de São Carlos, 2024-04-11)
Sousa, Alex da Silva
;
Reis, Maria de Jesus Dutra dos
;
https://lattes.cnpq.br/8868678989340770
;
https://orcid.org/0000-0002-5128-2074
;
https://lattes.cnpq.br/0647067456190759
Cancer represents the third leading cause of death among men, behind only deaths arising from diseases of the circulatory system and violent external causes. The advancement of medical technologies has provided greater prospects for controlling and curing cancer, which means that patients live longer with the disease, the treatment and the impacts arising from it. Because of this, the issue of health quality of life for men with cancer has become a central issue in the field of oncology. Therefore, the main objective of this manuscript is to analyze the quality of life, global health and self-care in men with cancer. The theoretical approach to the research objective will be carried out mainly from health psychology studies and the behavioral analytical approach. Three different chapters make up this manuscript: the first reports an article that discussed indicators of mortality and illness in males in Brazil. The second chapter is a narrative review of international literature, regarding changes in the quality of life of men undergoing cancer treatment. For the third chapter, field research is proposed, with a cross-sectional design, descriptive and correlational objective, regarding data collection, field research was used and for data analysis, the quantitative approach. The instruments applied were the script for consulting the medical record on sociodemographic characteristics and the clinical history of medical treatment, to assess quality of life the WHOQOL-bref, referring to global health PROMIS level 1 will be used, referring to sexual function the sexual quotient – male version (QS-M) and to describe the sample's health care repertoire, a semi-structured interview guide. In the main results, it was found that the general average quality of life of the sample was low (M= 29.5 and SD= 3), the four domains evaluated by the instrument also achieved low scores, especially in the physical domain, the worst commitment (M=22.9 and SD=9). In PROMIS I, it was observed that five of the thirteen care indicators were detected in 50% or more of the participants, namely: anxiety (86%), anger (80%), depression (71%), thoughts/ repetitive behaviors (69%) and substance use (59%). Concerning the sexual satisfaction indicator, obtained with the QS-M, the general score was low (M= 31.5 SD= 1.8), with a poor to unfavorable performance pattern predominating, in 45% of participants. At a confidence level of 95% and significance of 0.05, the parametric hypothesis tests used showed that the average quality of life is not distributed homogeneously when evaluated by clinically relevant groups. The main selfinjured health problems were: hypertension with 31%, anxiety with 25%, depression with 19%, diabetes with 18%, lung/respiratory problems with 10%, overweight with 8%, heart disease with 5% and other problems of health with 2%. Both risk behavior and protection were found to be in use more frequently among those at risk. The cluster analysis revealed two patient profiles: “highly critical” and “moderately critical”. It is concluded that the overall health of men undergoing cancer treatment requires attention, not only due to the reduction in the quality of life that they may be exposed to, but above all because they have a scarce repertoire of self-care that they frequently present, in addition to exposing themselves to risk factors. to health. Health professionals working in oncology must be aware of these dimensions of the relationship between masculinity and health to provide assistance that is more in line with the needs of these subjects.