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Um método de otimização com parâmetros de desempenho para Cloud Network Slices focado no locatário
(Universidade Federal de São Carlos, 2021-01-29)
Beraldo, Lucian
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Verdi, Fábio Luciano
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https://lattes.cnpq.br/9143186843657940
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https://lattes.cnpq.br/5042114303139006
Cloud Network Slicing (CNS), emerging alongside the 5G mobile network, comprises a paradigm shift in the way networks are provisioned, managed, and operated. Fundamentally, CNS fosters the deployment of a multitude of modern applications, e.g., virtual and augmented reality, 4K video streaming, and autonomous vehicles, which require ultra-low latency, high bandwidth consumption, or both. Slicing promotes the realization of such services through the allocation of computing and network resource bundles, which, as CNS mandates, are isolated from the rest of the network. Typically, such resources are arranged into wide geographical areas (e.g., into multiple countries or even continents), which implies that it is possible to pertain to distinct infrastructure providers. This exacerbates the already challenging problem of maximizing resource allocation efficiency, a feature commonly addressed by CNS architectures. In this respect, we study the optimal assignment of slices to multiple domains. Therefore, we account for slices as a collection of computing and network parts. Given specific resource requirements from slice tenants, and potentially multiple offers per slice part, we model the problem as a Mixed Integer Linear Program (MILP). We further design two heuristic algorithms, in order to mitigate the complexity intricacies that would be perceptible in large problem instances. Our evaluation results, based on a simulation environment aligned with the NECOS architecture, indicate that the MILP approach had a better performance compared to both the heuristics in choosing the cheapest offers with a fair amount of performance parameters in an adequate execution time. Our main contribution stands on the optimization methods based on the split and combine approach inserted in the novel NECOS' CNS architecture.
Análise ergonômica da atividade na execução do serviço de contrapiso
(Universidade Federal de São Carlos, 2021-01-29)
Gregolis, Caio Dantas
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Paliari, José Carlos
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https://lattes.cnpq.br/9387796929252598
;
https://lattes.cnpq.br/9349322978413347
In Brazil, in particular, civil construction is a traditional industry that, despite the increasingly frequent technological and managerial innovations, the vast majority of work is still carried out manually. The association of functions that require the use of intense, repetitive physical efforts, improvised postures and body movements with inadequate conditions and low qualification can be harmful and cause damage to the health of workers. That said, the main objective of this work, which consists of evaluating the ergonomic conditions associated with the execution of the screed service, was built within this context from the identification of a knowledge gap and the need to disseminate the importance and impact of carrying out ergonomic analysis that can positively reflect on the worker's life. Three ergonomics assessment tools were used to carry out the analysis and obtain a diagnosis, which pointed out the ergonomic risks that the worker responsible for carrying out the screed was exposed, identifying the most critical steps and activities of this service. Such tools were: MET (The Standard Metabolic Equivalent), in which the energy expenditure was evaluated, REBA (Rapid Entire Body Assessment), in which the postures of the whole body in the use of activities were evaluated, and EWA (Ergonomic Workplace Analysis), in which the “Lifting of Loads” (physical factor), “Accident Risk” (organizational factor) and “Communication between Workers and Personal Contacts” (cognitive factor) were evaluated. In order to obtain this diagnosis, direct observations, interviews and photographic records, including filming, of workers and workstations for data collection were carried out, which were subsequently processed based on the listed ergonomic assessment tools. Among the results obtained with the realization of the case studies, the following stand out: "Materials Supply" and "Waste Removal" tasks predominating as heavy work (MET), a higher percentage of very high risk postures in the "Screed Layer Production” task, mainly during the activities of “smooth” and “rub” (REBA), and the “Mortar Production” task and “Load Lifting” factor presenting the biggest numbers of negative classifications (EWA). It is safe to affirm that the performance of the screed service presents evident ergonomic risks, especially those related to the postures required. This research proved to be contributory for notifying such risks, proposing improvements and highlighting the ergonomics associated with civil construction.
Entre tempos, contratempos e passatempos: educação infantil em jornada de tempo integral
(Universidade Federal de São Carlos, 2021-01-29)
Sabatini, Viviane Menezes
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Tomazzetti, Cleonice Maria
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https://lattes.cnpq.br/4821077407620769
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https://lattes.cnpq.br/0576044942803068
Early childhood education in the country has been offered in a polarized way between schooling practices for part-time preschools and welfare practices for day-care centers on a full-time basis. However, since the incorporation of this last stage into the education system, there has been a transformation in the provision of care due to pressure from social movements. In addition, the very conception of a child, when changing historically, created the need to formulate educational policies that advocate the balance between caring and educating - two pillars of the triad that is completed with playing - as well as advances in studies on child development demonstrated the relevance of ensuring the quality of the experiences provided to young children in children's equipment, whether part-time or full-time. This research arises from the perception that the offer of full-time work, characterized by the child's long stay within the school space, demands the elaboration of quality educational policies so that, during the entire period spent at school, comprehensive formation is offered for this audience. As a problem, he questions whether, in extending the time spent in kindergarten, children would be guaranteed to play, educate and care, thus addressing their limits and possibilities. In this dimension, the general objective of the study is to analyze the supply and attendance of early childhood education in the school system of Rio Claro, a municipality in the interior of São Paulo; its specific objectives sought to characterize this reality in the researched education school system, as well as to examine the conceptions of children, childhood and early childhood education present in the official texts for education in the city where the research was located. As methodological designs, the research was undertaken through bibliographic research, document analysis and semi-structured interviews with the management team of the municipal education department. The results of the study showed that the main challenges and difficulties for the development of full-time educational work are related to the fragmentation between the care-to-educate functions and the persistence of care concepts still present in educational practices in early childhood education that work full time, that when they understand the role of the school as a place for childcare, they offer basic care and a hobby, thus compromising the comprehensive education necessary for childhood. Finally, the research points out that, although the legislation has advanced at the federal, state and municipal levels, there is still a need for improvement so that the integral education effectively occurs in the full-time day in Brazilian early childhood education.
Reflexões sobre o papel dos valores nas aplicações biotecnológicas
(Universidade Federal de São Carlos, 2021-01-29)
Vieira, Jackeline
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Pranchevicius, Maria Cristina da Silva
;
https://lattes.cnpq.br/4772148921558977
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Mariconda, Pablo Ruben
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https://lattes.cnpq.br/4845476249555381
Biotechnology is the central object of study, it will be classified here as an activity originated in the boundary between science (chemical and biological) and engineering, under the influence of several sets of values, with a ruling expression of capital and market values in the moment of application. Thus, it ruptures with the conception that “science is value free” and destabilizes the scientific ideals of neutrality and autonomy. The main objective of this work is to reflect how the application of biotechnology is conducted and what are the consequences of the professionals actions in terms of expression of values. The method used was the literature review. The analysis undertaken in this study made possible to note the existence of “control of nature” as a necessary condition for biotechnology, which does not imply in the direct link of biotechnologies to market values. Such an assertion will be corroborated by the application of biotechnology in projects that articulate and express values of sustainability, social justice and democratic participation. Although there is a relationship with capital and market values, it is possible to apply biotechnology oriented according to a “context-sensitive strategy”. It is hoped that this discussion will contribute to the diffusion of the postmodern critique of science within biotechnology, in order to instill the critical self-awareness in biotechnology students and professionals.
De camelô a empreendedor: os “lojistas” do Shopping Popular de Cuiabá
(Universidade Federal de São Carlos, 2021-01-29)
Fonseca, Christiany Regina
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Lima, Jacob Carlos
;
https://lattes.cnpq.br/9244132532446607
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https://lattes.cnpq.br/6287757695933494
In the 1990s, camelôs1 who worked in the streets and squares of Cuiabá were relocated in a new space, still precarious and far from the city center. Over the years, this space has undergone transformations, guaranteeing a "mall" structure. Workers, formerly informal, are now registered and legalized, their activities have been reframed, with the entrepreneurial ideal, a term by which they have come to identify themselves. This research aimed to understand how this reframing took place, and to what extent the entrepreneurship idea was incorporated by workers, as well, as their perceptions about the galerização2 policies implemented by the government, which were questioned by them for a long time. The analytical framework sought to recover the debate on informality and its transformations in recent decades, in a context of more flexible work relations and neoliberal polices. And also, the importance of social networks to understand the strategies used by workers to stay in the activity. The workers, now small entrepreneurs, of Shopping Popular de Cuiabá (MT) were empirical. The research consisted of observation of the work, application of questionnaires to build a profile of these workersentrepreneurs and in-depth interviews. We note the internalization of the entrepreneurial ideals and the erasure of the previous history as camelôs, which is reflected, among other things, as they reinterpret the public policies of business activity.
Mulheres viajantes a sororidade no turismo impulsionada pelas redes sociais
(Universidade Federal de São Carlos, 2021-01-29)
Souza, Caroline Oliveira de
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Silva, Vanda Aparecida da
;
https://lattes.cnpq.br/9920701759600807
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https://lattes.cnpq.br/4063730332336665
The research is based on the assumption that information and communication technology (ICT) provided a relational network of unity among women travelers, inspiring and motivating them to move. Therefore, the objective of this research will be to investigate before the ICT platforms the effects provided by traveling users, mainly related to the motivation that lead them to travel, their experiences resulting from travel, as well as their sharing via digital network media. As specific objectives we seek to a) Interview women travelers to understand what effects these shared experiences provide on digital media platforms; b) Describe and list the contents found; c) Identify the profile of women, as well as their main motivations for travel. The procedures resulting from the execution took place through qualitative and quantitative research using virtual ethnography. The researched sample was composed of sixty-six users with a traveling profile, three of them with semistructured interviews conducted virtually, and also, analysis of four groups of sociability in digital networks. In this study, the absence of platforms or official information produced by the Ministry of Tourism was identified. There is a lack of appropriations by public bodies, in general, to articulate better information on the topic. When verifying the answers and the semi-structured interviews, it was analyzed how much greater the complexity of each personal experience because it managed to show a small part of the situation experienced by each one of them.
Sobre fibrados e poliedros de dimensão finita
(Universidade Federal de São Carlos, 2021-02-01)
Bautista, Kevin Moradel
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Santos, Edivaldo Lopes dos
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https://lattes.cnpq.br/2167472456497730
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Hartmann Junior, Luiz Roberto
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https://lattes.cnpq.br/4217613854338579
The objective of this work is to establish the existence of universal bundles and to relate this existence to finite dimension polyhedra. As a consequence, we present examples of universal bundles for the case of classic groups.
Impacto da formação docente internacional na produção científica: o caso da UFSCar
(Universidade Federal de São Carlos, 2021-02-01)
Reis, José Eduardo dos
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Amaral, Roniberto Morato do
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https://lattes.cnpq.br/6958372164719600
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https://lattes.cnpq.br/3806982041285431
The teacher education of Brazilian researchers abroad favors their insertion in international collaboration networks, through international scientific exchanges and partnerships, contributes to the success and quality of the performance of the Graduate Programs, generating results that benefit society. Several bibliometric indicators have been used in the performance evaluation of researchers, universities and countries, at national and international levels, such as impact and internationalization indicators, calculated from the citations received by the articles. The objective of the research was to investigate the relationship between the teaching abroad, represented by the completion of a doctoral course and / or postdoctoral internship abroad and the international collaboration, represented by the international co-authorships present in the institutional scientific output indexed in the database Web of Science (WoS). The research method used was the exploratory case study, and the case-unit, the Federal University of São Carlos (UFSCar). A bibliometric study was performed using the Lattes Platform and WoS as sources of information, and the sample analyzed comprised 12,787 bibliographic records and 1,915 Lattes Curricula of active teachers. As a result, a set of indicators was elaborated on the scientific output of teachers with and without training abroad and their impact on international scientific collaboration, through analysis of co-authorships. From the results obtained, through data enrichment, it was possible to ascertain the positive relationship between the training of doctoral or postdoctoral professors abroad with the formation of international networks and co-authorships, contributing to the impact of institutional scientific output. Initial considerations indicate that the results and discussion of this research can contribute to the improvement of initiatives including the development of indicators of scientific and technological production in Brazil, involving internationalization and, consequently, for the improvement of the National Graduate System, by providing a better understanding of international scientific collaboration, based on investigating the training and performance of Brazilian researchers.
Reduzindo o custo do teste de mutação com base no conceito de arcos primitivos
(Universidade Federal de São Carlos, 2021-02-02)
Kuroishi, Pedro Henrique
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Vincenzi, Auri Marcelo Rizzo
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https://lattes.cnpq.br/0611351138131709
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https://lattes.cnpq.br/8528323478356675
Context: Software testing plays an important role in quality assurance. Testing techniques and criteria help the tester to develop and assess test suites. Mutation testing is a fault-based testing criterion commonly used to evaluate the quality of test suites. However, a high computational cost to generate and execute the mutants and the existence of equivalent prevent mutation testing to be widely applied in practical situations. In this sense, it is important to propose studies to overcome such problems. Objective: This work presents an approach that combined mutation testing and the concept of primitive arcs, used in the context of control-flow testing criteria, to reduce the cost of mutation testing. Overall, the goal was to verify if the execution of a subset of mutants located on the primitive arcs of a program under testing reduces the number of mutants and maintains a high mutation score. Next, this work evaluated the relationship between minimal mutants and primitive arcs. If both hypotheses confirm, it is possible to design new testing criteria based on the results obtained. Method: This work presented an experimental study to evaluate the proposed approach. To carry out the experiment, this work considered a set of 29 programs in C already used in other studies involving mutation testing. Results: The results showed that the approach reduced the number of mutants and achieved a high mutation score. Besides, the results showed that the primitive arcs concentrated a high percentage of minimal mutants. Then, the approach was compared to random mutation. The results showed that mutation on primitive arcs was slightly better than random mutation. Finally, this work presents a set of testing criteria based on the results obtained. Conclusion: Although powerful to detect faults, mutation testing still requires some improvements to large use in industry. The proposed approach may guide further works once the results obtained showed that the combination of mutation testing and primitive arcs might be a promising alternative. Thus, a broad experimental study using industry level programs and different test suites, may bring different results and hence, bring some contribution to the community.
O brincar nas políticas públicas para a educação infantil brasileira: dos documentos oficiais à proposta pedagógica para a educação infantil do Sistema Municipal de Ensino de Bauru/SP
(Universidade Federal de São Carlos, 2021-02-02)
Freitas, Andreza Cristina Morais de
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Tomazzetti, Cleonice Maria
;
https://lattes.cnpq.br/4821077407620769
;
https://lattes.cnpq.br/1826067362066362
The present research aimed to investigate how the Municipal Education System of Bauru has interpreted and translated national public policies for IE, and how these influenced the conceptions and directions assumed for playing expressed in its municipal document. Through documentary analysis of the notebooks produced by the Coordination of Early Childhood Education - COEDI and by the Secretariat of Fundamental Education - SEF (BRASIL, 1994-1998), the National Curriculum Reference for Early Childhood Education - RCNEI (BRASIL, 1998) and the National Curriculum Guidelines for Early Childhood Education - DCNEI (BRASIL, 2009), and the Pedagogical Proposal for Early Childhood Education of the Municipal Education System of Bauru (PASQUALINI; TSUHAKO, 2016), sought to understand how the main socio-historical, political and theoretical milestones influenced public policies for Brazilian early childhood education, and the defended conceptions and guidelines for playing. The theoretical framework for studies on playing is supported by the Historical-Cultural Theory, and the methodological framework is inspired by the Policy Cycle Approach (BOWE; BALL; GOLD, 1992, 1994). The results presented from the contexts of influences, text production and context of practice point to distances and similarities between public policies for national and municipal early childhood education. This study is part of the research line “Assessment and public policies in early childhood education”, of the study group EDIPIC- Early Childhood Education and Small Childhood in Context, at Federal University of São Carlos/SP.
Mídias sociais, cultura pop e divulgação científica: um estudo do canal Nerdologia
(Universidade Federal de São Carlos, 2021-02-02)
Oliveira, Felipe Adriano Alves de
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Rigolin, Camila Carneiro Dias
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https://lattes.cnpq.br/2388584081961836
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https://lattes.cnpq.br/3394354224029536
It is highlighted some of the main aspects of scientific dissemination, the act of communicating science to the public, being the social media, one of the vehicles part of this communication, such as the YouTube platform. In this sense, it proposes to analyze the Nerdologia channel as an integral part of this platform, being a channel focused on entertainment and dissemination of scientific knowledge through elements of pop culture. The study sought to identify the models of public communication of science in order to investigate the methods that the channel uses to communicate science with the public, its strategies, its main elements, and tools of disclosure, which had as sampling reference, the selection of the 50 most accessed videos between the years 2013 to 2019, in addition to contextualizing the public communication of science and the discussion involving the field of Science, Technology and Society, being the study area in which the present research focuses. The methodology used was Content Analysis that assisted in the processes of treatment and analysis of the data and information. The results obtained revealed the science communication models that focus respectively on the "Koru" model of Longnecker, also linked to informal education, and the "contextual" model of Lewenstein, in addition to the style of scientific dissemination, being classified as "independent". The research also addressed the issue of the aesthetic and sound elements of the channel and its discursivities. It was concluded that the Nerdologia channel seeks to disseminate and teach science in an implicit and independent way, using visual and sound resources as strategies to obtain greater views in their videos, always aiming at the context of their audience, as consumers of products of the Cultural Industry as part of Pop Culture.
Beija-flores e seus recursos florais no Parque Nacional da Serra da Canastra
(Universidade Federal de São Carlos, 2021-02-03)
Silva, Monique Maianne da
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Fieker, Carolline Zatta
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https://lattes.cnpq.br/4453761595730340
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Dias Filho, Manoel Martins
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https://lattes.cnpq.br/1346547036069954
Hummingbirds make up the phenotypically most specialized group in floral visitation. Indeed, many species of plants throughout the Americas depend on these birds to complete their reproductive cycle. Despite the inestimable contribution of existing studies on these relationships to the knowledge of mutualistic interactions, some ecosystems, such as the rupestrian fields sensu lato, are little explored in this context. Thus, the present work aimed to characterize the interactions between hummingbirds and plants in two phytophysiognomies of this ecosystem, rupestrian fields sensu stricto and forest islands represented by riparian forests, immersed in the Cerrado domain. We carried out field collections for one year in the Serra da Canastra National Park, one of the largest remnants of the Cerrado domain and well represented by ecosystems of rupestrian fields. Through observations on transects distributed in the two selected phytophysiognomies, we aim to characterize the interactions between hummingbirds and plants in terms of their general patterns (chapter 1) and in the light of the ecological networks approach (chapter 2). Specifically, in the first chapter, we investigated variations in the richness of plants visited by hummingbirds, hummingbird richness and abundance, total floral visitation and agonistic behavior of hummingbirds between two annual seasons (rainy and dry), syndromes pollination and phytophysiognomies. In the second chapter, we seek to assess variations in the patterns of interactions between the two habitats sampled in the light of the ecological network approach.
Eccentric left ventricular hypertrophy, left and right cardiac function in Chronic Heart Failure with or without coexisting COPD: impact on exercise performance
(Universidade Federal de São Carlos, 2021-02-03)
Santos, Polliana Batista dos
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Simões, Rodrigo Polaquini
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Goulart, Cássia da Luz
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Roscani, Meliza Goi
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Marinho, Renan Shida
Ictiofauna da região da Serra da Canastra, Minas Gerais: cavernas são filtros ambientais considerando-se riqueza, diversidade e comportamento alimentar?
(Universidade Federal de São Carlos, 2021-02-04)
Rabello, Gabriela Crestana
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Bichuette, Maria Elina
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https://lattes.cnpq.br/8453043393798516
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https://lattes.cnpq.br/9777367963310903
The subterranean (or hypogean) environment is formed by interconnected spaces of the subsoil or subsurface filled with water or air and has a marked characteristic of darkness in deeper areas and little variation in abiotic conditions, such as high relative humidity and constant temperature. One of the characteristics observed in many caves and other subterranean habitats is the tendency for food scarcity, where most of the time the supply of food is by allochthon origin, thus influencing the richness and distribution of the fauna. These factors, among others, make the hypogean environment extremely fragile. This study aimed to present historical data for the ichthyofauna in the São Francisco basin and to compare them with data occurring in caves and epigeanl stretches of São Roque de Minas region, Minas Gerais state, in addition to verifying physico-chemical data, richness and diversity. Three collection occasions were carried out using combined methods. Historical data were also used to compare the subterranean ichthyofauna occuring in the São Francisco Basin. The rio São Francisco River basin presented 26 species in hypogean stretches of rivers, eight troglobitic restricted to subterranean habitats, most of which are found in the state of Bahia. For the São Roque de Minas region, 13 species were recorded, seven in hypogean stretches. Concomitantly, the data collected for the region were analyzed aiming at the diversity of the ichthyofauna, verifying similarity of species and degree of health, testing the hypothesis that the caves represent an environmental filter for the local ichthyofauna.
Adaptação transcultural do Self-Reported Experiences of Activity Settings (SEAS) para a Língua Portuguesa (Brasil)
(Universidade Federal de São Carlos, 2021-02-04)
Peruzzo, Caroline Fernanda Bella
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Martinez, Claudia Maria Simões
;
https://lattes.cnpq.br/1371315095038350
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https://lattes.cnpq.br/9459585899748417
Introduction: Engagement is defined in the literature as a multifaceted state composed of affec-tive, cognitive and behavioral aspects, conceptualized in two interrelated ways, as a process (in-volvement with) and a state (involved in). For occupational engagement to start, some points need to be considered, such as the sense of readiness, purpose or meaning, participation, motiva-tion and interest, while other points are seen as influencing the level of engagement, being the state of mental health and cognitive ability, challenge, feedback and environmental elements. The literature describes a conceptual model of “social environment” and “social context” that inte-grates a perspective focused on the person with a perspective focused on the environment and that outlines the mechanisms through which children and youth and the social environment inter-act: this is the Model of social environment and social context. This model directs researchers and professionals to interventions that address interaction, including children and their social en-vironments, families, peer groups and communities, in order to create possibilities for healthy development and the creation of health-promoting environments. In this perspective, the Self-reported Experiences of Activity Settings (SEAS) instrument was developed, which assesses the self-report of young people in relation to their activities. The instrument has good psychometric qualities and favorable results in its application. Objective: to carry out the cross-cultural adapta-tion of the Self-reported Experiences of Activity Settings (SEAS) to Portuguese (BRAZIL). Methodology: the cross-cultural adaptation of the instrument was carried out with the approval of the instrument's authors. From that approval, the steps taken were the initial translation, trans-lation synthesis, back-translation, evaluation by the expert committee and cognitive development. The cognitive development was carried out with 22 adolescents with and without physical disa-bilities, attended at institutions in medium-sized cities in the interior of São Paulo in order to veri-fy the understanding of the instrument's items. Results: The rate of agreement in the sentences by the committee of judges was satisfactory and the items below 80% of agreement were adjusted based on consensus among the researchers, corresponding to a total of 15 sentences. In the stage of cognitive development, it was observed that the Portuguese version was understandable be-cause the comprehension index was high for the adolescents in the study and the authors ap-proved the final version. Discussion: Certain occupational therapy terms used in SEAS are dis-cussed, such as “activity settings”. Differences in translation styles are also discussed, highlight-ing the importance of the stages of translation, back-translation, the composition of the expert committee at work and the results obtained in the stage of cognitive development. Conclusion: The results of the study demonstrated that the equivalence with the original version was main-tained and the instrument in Portuguese appears to be suitable for the Brazilian population. It ends with an instrument ready to undergo psychometric studies, in order to be validated for Bra-zil.
O direito à literatura: letramento literário e contos de fadas como ressignificação do ordinário em extraordinário
(Universidade Federal de São Carlos, 2021-02-04)
Oliveira, Natália Laiana
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Souza, Geraldo Tadeu
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https://lattes.cnpq.br/3516168011612531
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https://lattes.cnpq.br/3305170086156847
The present work of conclusion of the course is a bibliographic and documentary research that seeks to deepen some concepts on the right to literature, literary literacy, and fairy tales. aimed at dialogue with BNCC and PNLD Literary to emphasize that literature and the school must go together. From a theoretical point of view, it seeks to reflect on the importance of literature for human beings and recognize it as a fundamental right (C NDIDO, 2011) and as aesthetic education (VIGOTSKI, 2003), being necessary for the full development of students. For the studies of fairy tales as an instrument of creative resignification of our life, I use the contributions of Propp (1984), Tolkien (2020), Machado (1994) and Coelho (2012). I problematize literary literacy (COSSON, 2019, 2014) because it offers us the necessary instruments to act in the literate world, considering the subject in its entirety. Thinking about the importance of fairy tales in the formation of the literary reader in the early years, articulating orality and access to literary books as a right is our main objective.
Análise de segurança de criptografia quântica baseada em teletransporte
(Universidade Federal de São Carlos, 2021-02-04)
Lima, Diogo Henrique Garcia
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Rigolin, Gustavo Garcia
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https://lattes.cnpq.br/5670956791297779
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https://lattes.cnpq.br/1417152403051806
We prove that the teleportation based quantum cryptography protocol presented in [Opt. Commun. 283, 184 (2010)], which is built using only orthogonal states encoding the classical bits that are teleported from Alice to Bob, is asymptotically secure against all types of individual and collective attacks. We then investigate modifications to that protocol leading to greater secret-key rates and to security against coherent attacks. In other words, we show an unconditional secure quantum key distribution protocol that does not need non-orthogonal quantum states to encode the bits of the secret key sent from Alice to Bob. We also revisit the security proof of the BB84 protocol by exploring the non-uniqueness of the Schmidt decomposition of its entanglement-based representation. This allows us to arrive at a secure transmission of the key for a slightly greater quantum bit error rate (quantum communication channel’s noise) when compared to its standard security analysis. After that, we investigate how different types of the noise usually present in realistic implementations of the BB84 protocolo affect its operation.
Efeitos da intervenção psicoeducativa com enfoque na estimulação cognitva para cuidadores de idosos com doença de Alzheimer
(Universidade Federal de São Carlos, 2021-02-04)
Caparrol, Ana Julia de souza
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Gratão, Aline Cristina Martins
;
https://lattes.cnpq.br/7873339343111119
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https://lattes.cnpq.br/5489036562661258
Introduction: The increase in elderly people diagnosed with Alzheimer's disease (AD) brings challenges to society, especially to family members, who often become informal caregivers, culminating in a series of biopsychosocial complications. Among them, there is the impairment in cognitive performance, which can directly affect the quality of life of these individuals, establishing the need for support programs. Objective: to evaluate the effects of a psychoeducational home intervention on cognitive performance, anxious symptoms, stress and burden in caregivers of elderly people with AD. To meet the major objective, two studies were designed, with the following objectives: (1) To carry out a systematic review of the literature on psychoeducational interventions with caregivers of elderly people with AD; (2) apply a psychoeducational intervention with a focus on cognitive stimulation and evaluate its effect on cognitive performance, anxiety, stress and the burden of caregivers of elderly people with AD.. Method: The study (1) was configured as a systematic review of scientific production with search in the databases Pubmed, Virtual Health Library, MEDLINE, PsyINFO, Scopus and Cochrane, published until December 2019, in English, Portuguese or Spanish. The search strategy combined the Boolean terms and operators considering the key concepts "caregivers", "elderly", "intervention", "Alzheimer's disease", "cognition", "psychosocial impact", "psychosocial support systems". The study (2) deals with a randomized, controlled and blinded clinical trial, for the application of a psychoeducational intervention focusing on cognitive stimulation in caregivers of elderly people linked to the Home Care Department of a private health operator in the city of São Carlos (SP). Results: (1) Eight articles were analyzed, which showed improved knowledge about AD, in addition to better self-efficacy, resilience and cognitive performance of caregivers. (2) The Intervention Group showed significant improvement in the symptoms of stress (p = 0.027), global cognition (ACER p = 0.003; MMSE p = 0.008) and domains (attention / orientation - p = 0.004; memory - p = 0.017; fluency verbal - p = 0.023). As for the Active Control Group, even if not significant, there was an improvement in verbal fluency that showed in the reevaluation (p = 0.007), perceived stress (p = 0.031) and anxiety symptoms (p = 0.049). Conclusion: (1) Models of psychoeducational interventions for caregivers of elderly people with AD are proposed in different formats and demonstrate positive effects regarding their self-efficacy, resilience and cognitive performance. (2) Home intervention for caregivers is an important tool for improving cognition and stress in caregivers of elderly people with AD, but it does not seem to have the same efficacy for symptoms of overload and anxiety, which highlights the need for specific intervention strategies for this domain.
Contribuição ao conhecimento taxonômico dos Braconidae (Hymenoptera, Ichneumonoidea) do sudeste brasileiro, com ênfase na subfamília Alysiinae
(Universidade Federal de São Carlos, 2021-02-04)
Oliveira, Franciélle Dias de
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Dias, Angélica Maria Penteado Martins
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https://lattes.cnpq.br/8637344058859147
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https://lattes.cnpq.br/7801155621308230
This study had as main objective to contribute to the taxonomic knowledge of Braconidae (Hymenoptera, Ichneumonoidea), with emphasis on the subfamily Alysiinae, of two protected areas (Unidades de Conservação) in the southeastern region of Brazil, namely: Parque Nacional da Serra da Canastra (São Roque de Minas, MG) and Parque Nacional da Serra dos Órgãos (Teresópolis, RJ). In the Parque Nacional da Serra da Canastra, the study was conducted in the upper part of the Park (at 1,180 to 1,444 m altitude), in gallery forest and rupestrian grassland (sensu stricto) areas, between November 2018 and December 2019, with the use of Moericke, Malaise and light traps. In this Park, more than 9,000 specimens of 24 subfamilies of Braconidae were sampled. The results obtained with Moericke traps suggested a positive association of the abundance and richness of subfamilies with the relative humidity of the air. The composition of subfamilies differed between the two phytophysiognomies sampled. The most abundant subfamilies were Doryctinae, Microgastrinae and Cheloninae. Cenocoelinae, Rhysipolinae, and Rhyssalinae had few specimens collected and were sampled exclusively in gallery forests; specimens of Miracinae occurred only in rupestrian grasslands. The Malaise trap was the most effective method for collecting specimens, however, the Moericke traps were important in relative abundance, especially for Alysiinae, Doryctinae and Pambolinae, and the only specimen of Rhysipolinae obtained was with the use of this method; with the light trap, a high diversity of subfamilies was sampled. Seven known genera (and two undescribed genera), 63 morphospecies and 223 specimens of Alysiinae were sampled in this Park, predominantly from gallery forests, but specimens of Coelinius occurred only in rupestrian grasslands. The composition of morphospecies differed between the sampled phytophysiognomies and the sample sufficiency was not achieved for any of the three methods used. In the Parque Nacional da Serra dos Órgãos, collections were carried between December 2014 and November 2015, in an altitudinal gradient at 137 to 2,140 m. Twelve known genera (and two undescribed genera) of Alysiinae were obtained in this Park and about 2,900 specimens. Above 860 m of altitude, 90% of the specimens were sampled; a positive association between abundance and the average altitude of the sample area was found. In contrast, specimens of Orthostigma were obtained only in areas at 350 m. Considering the two protected areas, 14 known genera of Alysiinae and two undescribed genera were sampled. The most abundant genera were Dinotrema, Aspilota and Aphaereta. Relatively rare and/or little recorded genera in the Neotropical Region occurred (Alysia, Idiasta, Coelinius, Ilatha, Rhacalysia, and Orthostigma). This research provided support for an update of the genera Idiasta and Rhacalysia, including the description of new species from the Neotropical Region.
Teoremas ergódicos para sistemas multívocos e aleatórios com aplicações a semifluxos generalizados
(Universidade Federal de São Carlos, 2021-02-05)
Lucidio, Gabriel Silva
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Gentile, Cláudia Buttarello
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https://lattes.cnpq.br/1295174684198407
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https://lattes.cnpq.br/8388600047286637
This work focuses on four major themes: semiflows; generalized semiflows; invariant measure for set-valued maps; and random dynamical systems. The study of semiflows aims to understand the asymptotic behavior of solutions to problems with unique solutions. The generalized semiflows, on the other hand, allow the solution for an initial data to be not unique, thus allowing a wider variety of problems. Both studies, in this work, have the main goal of providing conditions for the existence of an attractor, and properties on it. When dealing with invariant measures for set-valued maps, it is important to say that different proposals have been made over the past few years to define this concept. In this work, four of these definitions are presented, and at the end it is shown that they are all equivalent under certain conditions. Finally, a version of ergodic theorem for set-valued map is presented, with an application to a dynamical system wich generates a generalized semiflow with atractor. Finally, in random (discrete) dynamical systems, the system is not limited to the iterations of a unique map, but to successive applications of maps chosen randomly within a certain family. A version of ergodic theorem is presented for this case, with a new application to a dynamical system wich generates a generalized semiflow with atractor.