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5F1C-9D14-387E | Joana Margarida Ferreira da Costa Reis info:eu-repo/semantics/publishedVersion

Los reclamos por fallas de diversa índole en la dispensación de medicamentos han sido una de las principales causas de queja de los usuarios del Sistema General de Seguridad Social en Salud (SGSSS). La falta de oportunidad, la no entrega o entrega parcial de los medicamentos, las trabas administrativas por deficiencias en el sistema de información de los prestadores y demoras en autorizaciones son algunas de las causas más frecuentes que obligan al usuario a desistir de su tratamiento o a interponer alguna acción de tutela, interponer quejas o reclamos para lograr el cumplimiento de su derecho adquirido como usuario del sistema. Estas dificultades no son ajenas a los habitantes de Pamplona afiliados al Régimen Subsidiado en Salud, como se evidenció con esta investigación basada en los informes disponibles en la dirección territorial de salud en los años 2017 a 2021. Al aplicar la metodología de triangulación de las diferentes normas que han reformado al SGSSS y de análisis de las políticas públicas, relacionadas con el acceso a los tratamientos farmacológicos, se logra una exploración de carácter bibliográfico que permite identificar 4 variables para el análisis. En esta investigación se pretende determinar las necesidades y oportunidades de mejora en el proceso de dispensación de medicamentos, no solamente por las EAPB sino por los demás actores del sistema, entre ellos el Ministerio de Salud, que reglamenta las normas que son de su cumplimiento pero que a la fecha aún no implementa, ocasionando en gran medida que las entidades de inspección, vigilancia y control no cuenten con insumos producto de un monitoreo para realizar sus labores de seguimiento y control de la entrega de los medicamentos incluidos en el plan de servicios y tecnologías en salud por parte de las EAPB a sus usuarios. A partir de las experiencias condensadas en los informes y de la revisión de la normativa vigente aplicable información que fue procesada a través de revisión documental y mecanismos de triangulación de información teniendo en cuenta las variables definidas para el análisis, se realizan propuestas para mejora en el proceso de dispensación de medicamentos, dirigidas a los actores del sistema en el municipio de Pamplona proponiendo una ruta articulada entre los actores del sistema complementada con un escenario producto de la voluntad política territorial, para fortalecer el ejercicio de sus funciones de seguimiento, vigilancia y control, y como insumo para gestionar el riesgo en salud de su población. Complaints due to failures of various kinds in the dispensing of medicines have been one of the main causes of complaints from users of the General Social Security Health System (SGSSS). Lack of timeliness, non-delivery or partial delivery of medicines, administrative obstacles due to deficiencies in the information system of the providers and delays in authorizations are some of the most frequent causes that force the user to desist from treatment or to file a tutela action, file complaints or claims to achieve compliance with their acquired right as a user of the system. These difficulties are not alien to the inhabitants of Pamplona affiliated to the Subsidized Health Regime, as evidenced by this research based on the reports available in the territorial health directorate in the years 2017 to 2021. By applying the methodology of triangulation of the different norms that have reformed the SGSSS and analysis of public policies, related to access to pharmacological treatments, an exploration of bibliographic character is achieved that allows identifying 4 variables for the analysis. The purpose of this research is to determine the needs and opportunities for improvement in the process of dispensing medicines, not only by the EAPBs but also by the other actors in the system, including the Ministry of Health, which regulates the standards that must be complied with but which to date have not yet been implemented, causing to a large extent that the inspection, surveillance and control entities do not have the inputs resulting from monitoring to carry out their work of follow-up and control of the delivery of medicines included in the health services and technologies plan by the EAPBs to their users. Based on the experiences condensed in the reports and the review of the applicable regulations in force, information that was processed through documentary review and information triangulation mechanisms, taking into account the variables defined for the analysis, proposals are made to improve the process of dispensing medicines, aimed at the actors of the system in the municipality of Pamplona, proposing an articulated route among the actors of the system complemented with a scenario resulting from the territorial political will, to strengthen the exercise of their monitoring, surveillance and control functions, and as an input to manage the health risk of the population.

Information and Communication Technologies (ICT) are present in all our daily lives, but their benefit in tourism is evident. This type of technology accompanies the tourist from the choice of the destination until after their experience. Information and Communication Technologies applied to tourism, and more specifically to museums, are seen as an interactive and educational capital that creates a connection between the object and the tourist, making their experience more immersive and authentic. The Money Museum and the Alviela Science Center are two examples that use this type of technology to transmit knowledge to visitors. In times of economic crisis and the closing of museological spaces due to the Covid-19 pandemic, museums had to adapt to this situation, allowing interaction with the public without leaving home. info:eu-repo/semantics/publishedVersion

La responsabilidad social universitaria puede aportar a la formación de una comunidad educativa sensible a las necesidades de su entorno y consciente de las dinámicas propias de la sociedad en la que se encuentra. Incluirla dentro de los currículos universitarios como una premisa para el aprendizaje permitiría la formación de profesionales competentes para generar o aportar a cambios sociales. Así mismo, la responsabilidad social universitaria da lugar a reconocer la importancia de un actuar ético y responsable que le permita a los profesionales reconocer no sólo las consecuencias de su actuar en su entorno y con respecto a los demás, sino con respecto a qué pueden lograr con su profesión. De este modo, la responsabilidad social en la educación de los profesionales de la salud se promueve como una que refuerza valores propios de la humanización del sistema y que bien podría promover el reconocimiento, respeto y salvaguarda de los derechos de los pacientes. University social responsibility can contribute to making an a educative community sensitive to the needs of its environment as much as aware of the dynamics of the society where it is working. Developing social responsibility as a premise in university programs would allow the training of competent professionals to bring social changes and thinking in new forms of acting inside their areas. Furthermore, it could gives rise to recognize the importance of acting in an ethical and responsible way as professionals, knowing not only the consequences of their actions, but also thinking in what they can achieve working in benefit of the community. In this way, social responsibility in the education of health professionals is a form to promoted and reinforces the values of the humanization of the health system. Finally, that could well promote the recognition, respect and safeguarding of patients' rights by this professionals in every situation. Especialización

The problematic of effluent treatment from olive oil industry as been the subject of an European Commission funded project (INCO-MED programme): “Mediterranean Usage of Biotechnological Treated effluent Water”. The potential that effluent offers to increase the availability of water, in mediterranean regions, was the final goal of the project, co-ordinated by INETI with partners from EU and MPC. In the project different systems for the treatment of this effluent had been studied: reactors systems (Intensive type) based on the jet-loop principle (JACTO) and an anaerobic UASB hybrid type reactor technology; lagoons (extensive type) for municipal wastewater treatment were also applied. The aerobic JACTO system demonstrated high unit capacity for biological conversion and operation at different loadings, allowing the removal of the pollutant organic load and the toxicity associated with this effluent. The use of this type of reactor for pre-treatment of OOWW prior to disposal on a lagoon system was tested at FSS (Morocco). Use of fungi as a pre-treatment was tested by UNITUS (Italy), EBC (Turkey) and CBS (Tunisia). In this way the effluent could be “improved” as demonstrated in the case of anaerobic digestion and biogas production (CBS). Effluent improvement and enrichment with phosphate was also tested by UNITUS. Analytical monitoring methodologies were developed at IA (Spain) and treated effluents were tested for a number of agricultural applications in different countries. The different alternatives studied will be analysed and compared taking account of technological and socio-economical criteria in relation with the project objectives.

Introduction: Peyronie’s disease (PD) is a fibroproliferative disease of the penis in which myofibroblast differentiation has a central role. Adenosine and estrogen signalling mediate their effect via interaction with their respective receptors which have been associated with the pathophysiology of a variety of fibroproliferative diseases, but this has yet to be studied in PD.\ud Hypothesis: Adenosine and/or estrogen receptor expression is involved in myofibroblast differentiation in PD and may, therefore, be novel potential targets for anti-fibrotic therapies in this disease.\ud Aim: The aim of this project was to characterise the myofibroblast differentiation process in human tunica albuginea-derived fibroblasts and to investigate the role of adenosine and estrogen receptors in this process.\ud Methods: Tissue samples from non-PD TA tissue and PD plaque tissue were obtained and fibroblast cell lines were established from each sample. Cells were exposed to transforming growth factor (TGF)-β1. The mRNA levels and the protein levels of several targets of interest, alpha-smooth muscle actin (α-SMA), four adenosine receptors and two estrogen receptors (ERs), were evaluated using real-time RT-PCR (RT-qPCR), immunocytochemistry (ICC), immunohistochemistry (IHC), Western blot and In-Cell Western (ICW). The effect of compound modulators of two of the receptors on TGF-β1-induced myofibroblast transformation was assessed.\ud Results: Both RT-qPCR and ICW methods were successfully developed and/or validated. The α-SMA mRNA and protein levels increased in cells isolated from non-PD TA tissue and PD plaque tissue when exposed to TGF-β1. The two cell groups expressed ADORA1 and ADORA2B and there was a differential effect to TGF-β1 in these two receptors. An ADORA2B agonist (BAY 60-6583) significantly inhibited TGF-β1-induced myofibroblast differentiation in the two cell types investigated. The two cell groups expressed ERβ but did not express ERα. Two selective estrogen receptor modulators (SERMs), tamoxifen and raloxifene, significantly inhibited TGF-β1-induced myofibroblast differentiation, suggesting that these SERMs interact with ERβ.\ud Conclusions: Cells isolated from non-PD TA tissue and PD plaque tissue expressed ADORA1, ADORA2B and ERβ. TGF-β1 had differential effects on the receptors investigated depending on the cell type. An adenosine receptor agonist and two SERMs significantly inhibited TGF-β1-induced myofibroblast differentiation in a concentration-dependent manner suggesting that these receptors and consequently the adenosine and estrogen pathways may be involved in the differentiation of myofibroblasts and may be potential novel therapeutic targets in PD.

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES This research aims to propose a sequence of activities that facilitate the understanding of the resolving procedures for adding and subtracting fractions, analyze the resolutions of a class of the 6th year of Elementary School facing this sequence and then understand their contributions to the teaching and learning of Mathematics. Seeking improvement for teaching, this Mathematical Investigation has a pragmatic nature with qualitative analyzes in the development of the resolutions of the activities of 19 students from a state school in the south of Sergipe. The proposed sequence of activities consists of four activities. The first activity diagnoses students' knowledge of fractions and guides the continuation of activities; the second is instructive in order to intensify knowledge about fractions; the third activity is the application of a manipulable material that makes it possible to understand the resolving procedure of adding and subtracting fractions and finally, the last is a systematization activity in which the student will detach himself from the material in order to recall his learning about the operations studied. To investigate the factor that distances students from making coherent calculations, we use Error Analysis (Cury 1994) in the diagnostic activity, besides a field diary and written records prepared by students in the other activities that describe the fieldwork developed and emphasizes advances in students' ideas during practice. In view of the analysis carried out, we can see that the participation of students in this sequence of activities makes them able to build their own knowledge about the resolving procedure of adding and subtracting fractions and enables meaning to this mathematical content. A presente pesquisa tem por objetivo propor uma sequência de atividades que facilite a compreensão dos procedimentos resolutivos da adição e subtração de frações, bem como analisar as resoluções de uma turma do 6º ano do Ensino Fundamental frente a essa sequência, a fim de perceber as suas contribuições para o ensino e aprendizagem da Matemática. Em busca de melhoria para o ensino, essa Investigação Matemática possui a natureza pragmática, com análises qualitativas no desenvolver das resoluções das atividades de 19 alunos de uma escola estadual da região centro sul sergipano. A sequência de atividades propostas é composta por quatro atividades, sendo que a primeira delas diagnostica o conhecimento dos alunos sobre frações e norteia a continuação das atividades; a segunda tem caráter instrutivo, a fim de intensificar o conhecimento a respeito das frações; a terceira atividade tratase da aplicação de um material manipulável que viabiliza a compreensão do procedimento resolutivo da adição e subtração de frações e, por último, foi aplicada uma atividade de sistematização em que o aluno se desprenderá do material e irá registrar seu aprendizado a respeito das operações tratadas. Para investigar o fator que distancia os alunos da efetivação de cálculos coerentes utilizamos a Análise de Erros (Cury 1994) na atividade diagnóstica, além de um diário de campo e registros escritos elaborados pelos estudantes nas demais atividades que descrevem o trabalho de campo desenvolvido e enfatiza os avanços nas ideias dos alunos durante a prática. Diante da análise realizada, podemos perceber que a participação dos alunos nessa sequência de atividades os torna capazes de construir o seu próprio conhecimento a respeito do procedimento resolutivo da adição e subtração de frações e viabiliza um significado a este conteúdo matemático. Itabaiana

The present work presents an approach on the teaching of Divisibility in the second segment of Elementary Education of Youth and Adult Education through Ausubel's theory of Meaningful Learning. We present an experience report in a public school with two Comparative Proposed Activities. We reviewed the evolution of this type of education in our country over time, emphasizing its importance and the need for a different look at its peculiarities. We also argue about the theory of Meaningful Learning, which combined with Problem Solving, among other methodologies, shows an excellent theoretical reference system for the organization of teaching, in particular the teaching of YAE, which calls for a less technical and more human approach possible. Finally, we conclude that, despite the many difficulties and limitations, Youth and Adult Education needs a differentiated work with a previous study and an adequate selection of methodological instruments to achieve satisfactory results. O presente trabalho apresenta uma abordagem sobre o ensino de Divisibilidade no segundo segmento do Ensino Fundamental da Educação de Jovens e Adultos através da teoria da Aprendizagem Significativa de Ausubel. Apresentamos um relato de experiência em uma escola da rede púbica de ensino com duas Atividades Propostas comparativas e realizamos um apanhado sobre a evolução dessa modalidade de ensino em nosso país ao longo do tempo, ressaltando sua importância e a necessidade de um olhar diferenciado para suas peculiaridades. Argumentamos ainda sobre a teoria da Aprendizagem Significativa, que combinada à Resolução de Problemas, entre outras metodologias, mostra ser um excelente sistema de referencial teórico para a organização do ensino, em particular o ensino da EJA, que pede uma abordagem menos tecnicista e mais humana possível. Por fim, concluímos que, apesar das muitas dificuldades e limitações, a Educação de Jovens e Adultos necessita de um trabalho diferenciado com um estudo prévio e uma seleção adequada dos instrumentos metodológicos para que sejam alcançados resultados satisfatórios. Itabaiana

This work is aimed for high school teachers, and is intended to present methodologies to approach Differential Calculus with one variable within the three grades of high school, taking into account that, with this knowledge, students will be able to interpret the behavior of algebraic and transcendent functions, which are Mathematical topics and other subjects in most part of this study cycle, as well as assisting students in a solid preparation aiming at facing the initial subjects of some university courses, mainly in the area of exact sciences, which have been presenting negative results on the student grades in subjects such as Differential and Integral Calculus I and Physics I. In order to bring Calculus ideas closer to real situations and relate Mathematics with other disciplines, in this paper, we argue that in the first year of high school, an approach should be made initially to the derivative study focused on the Physical discipline, in the definition of the rate of change instantaneous, in content of Scalar Kinematics, with this subject teachers’ help, and that these initial ideas are harnessed to the study of the Polynomial Function of the 2nd degree, in the Mathematical discipline, equation of the tangent line, the graphical behavior and the problems of maximum and minimum values related to this function. In the second year, Physics will continue as an active participant in the rate of change study with the help of derivative, and mathematics will have in Newton's binomial the opportunity of approach some derivation rules. In the third year, physics will maintain its role, as in previous series, while Mathematics will present to the students who want to devote more discipline to more formal content, with the aid of notions of limits and continuity, addressing since the definition derivative until the study of the rules of derivation, with the appropriate justifications, in addition to a broader treatment of graphing and problem solving optimization, using GeoGebra software as a support tool. Este trabalho é destinado a professores do Ensino Médio, e tem como propósito apresentar metodologias de abordagem do Cálculo Diferencial com uma variável nas três séries do Ensino Médio, levando em consideração que, com esse conhecimento, os estudantes terão um ganho na capacidade de interpretação do comportamento das funções, algébricas e transcendentes, que são tópicos tratados na Matemática e outras disciplinas, em boa parte deste ciclo de estudo, além de auxiliar os estudantes em uma preparação sólida visando o enfrentamento das disciplinas iniciais de alguns cursos universitários, principalmente de exatas, que vêm apresentando resultados negativos para as notas dos discentes em disciplinas como Cálculo Diferencial e Integral I e Física I. Com o objetivo de aproximar as ideias de Cálculo a situações reais e relacionar a Matemática com outras disciplinas, neste trabalho, defendemos que, no primeiro ano do Ensino Médio, seja feita uma abordagem, inicialmente, do estudo da derivada voltado para a disciplina Física, já na definição de taxa de variação instantânea, em conteúdos de Cinemática Escalar, com o auxílio dos professores dessa disciplina, e que essas ideias iniciais sejam aproveitadas para o estudo da Função Polinomial do 2º grau, na disciplina Matemática, tratando da equação da reta tangente, do comportamento gráfico e dos problemas de máximos e mínimos, relacionados a essa função. No segundo ano, a Física continuará como participante ativa no estudo de taxa de variação com o auxílio da derivada, e a Matemática terá no binômio de Newton a oportunidade da abordagem de algumas regras de derivação. No terceiro ano, a Física manterá seu papel, como nas séries anteriores, enquanto a Matemática apresentará aos estudantes que querem se dedicar mais à disciplina um conteúdo mais formal, com o auxílio de noções de limites e continuidade, abordando desde a definição de derivada até o estudo das regras de derivação, com as devidas justificativas, além de um tratamento mais amplo no esboço de gráficos e problemas de otimização, utilizando o software GeoGebra como ferramenta de apoio. Itabaiana

Mozambique, like any other country, needs to know the behavior of the main macroeconomic variables to make better decisions. This study aims to investigate the behavior as well as the relationship between macroeconomic variables and financial time series related to Mozambique. For the study, we use univariate Autoregressive conditional heteroskedasticity models, Vector autoregressive models and multivariate Generalized autoregressive conditional heteroskedasticity models. Overall, the study concludes that: (i) Asymmetry of shocks, volatility and currency-specific behavior affect economic performance, particularly in an open economy, influencing international capital movement and goods and services transactions, (ii) Mozambique’s real Gross domestic product plays an important role from cointegration relationships, impulse response functions to forecast error variance decomposition. (iii) The analysis of co-volatility showed the existence of relationships in volatility between different markets which influences the systematic behavior presented by the variables over time. These results contribute and reinforce the existing literature in terms of the choice of the appropriate model, criteria and tests presented that considerably affect the type of results. With this analysis of macroeconomic series related to Mozambique’s economy, it somewhat helps the process of policy making that increases Mozambique’s sustainable economic growth rate. In this thesis the problem of the normality of the log-returns for stock prices is also addressed for different formulations of price returns, namely intra-day and inter-day log-returns, with and without data trimming and for a large set of companies stock prices.

Relatório de Estágio para obtenção do Grau de Mestre em Matemática e Aplicações – Atuariado, Estatística e Investigação Operacional O objetivo deste trabalho prende-se com a identificação de fatores significativos e explicativos para o comportamento do mercado regulado português dos jogos e apostas online. Através duma amostra de informação relativa a um intervalo de tempo desta atividade, disponibilizada pelo SRIJ, tal foi possível, sendo o foco deste trabalho a base de incidência do imposto a que fica sujeita esta atividade, variável essa que, por si só, reúne algumas das características do referido mercado. Em conjunto com algumas variáveis explicativas ajustam-se dois modelos, o modelo de regressão linear múltipla e o modelo de regressão Gama, por forma a encontrar quais daquelas variáveis explicam o pretendido. Apenas foi possível adquirir qualidade na inferência dos modelos para as apostas desportivas à cota, obtendo-se conclusões sobre as mesmas. Ainda se realiza uma análise da importância relativa das variáveis propostas pelo modelo de regressão linear múltipla, pela implementação de algumas métricas para o efeito, bem como uma análise de sensibilidade para as variáveis propostas por ambos os modelos. Por último, apresentam-se algumas conclusões e recomendações da responsabilidade exclusiva do autor e ainda algumas considerações sobre possíveis indicadores alarmísticos de desvios a implementar com base nos resultados obtidos pelo estudo realizado e à luz do mercado em estudo. The main purpose of this work consists of the identification of significative and ex- planatory factors for the portuguese regulated online gambling market behaviour. This analysis was possible, through a sample of information, regarding a period of time of this activity, provided by SRIJ (portuguese regulator), being the tax basis for this activity the focal point of this work, which contains on itself some of the refered market features. Together with some explanatory variables two models are fitted, the multiple linear regression model and the Gamma regression model, in order to find which of those variables explain the first intended. The inference analysis with proper quality was only possible to achieve for the fixed-odds sports bets, with results and conclusions only for those. In addition, a relative importance analysis of the proposed variables from the multiple linear regression model is carried out by the use of some metrics for this purpose and also a sensivity analysis for the proposed variables from both models. Finally, some conclusions and recommendations from the entire responsability of the author and some considerations about possible deviation alarming indicators are presented, based on the results from the conducted analysis and considering the market in study.

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES This work aimed to identify the errors made by 6th grade elementary school students in a State Public School school in solving issues related to operations with fractions and what problems they encountered in solving problems involving operations with fractions. Participated in the study 29 students of the 6th grade of Elementary School of a state college in Agreste Sergipano. Two questionnaires were used to collect data. The first one contained seven direct questions for students to perform fractional operations, and the second contained six questions that needed to be interpreted to solve problems, including questions related to fractions and their operations. For the analysis of the first questionnaire we used the Error Analysis (Cury 1994), where we quantified and described the types of errors made by the students in solving the questions. In this we detect that the greatest difficulties faced are related to errors in the addition and subtraction of fractions. In the second questionnaire that addresses problem solving, we used the qualitative content analysis and the problem solving phases of Polya (1995). In order to do so, we try to identify in which phase students present greater difficulties in solving problems. The results of the second questionnaire prove that one of the greatest difficulties for students is to understand the problem, which does not allow them to establish and execute the resolution plan. Este trabalho teve o intuito de identificar quais os erros cometidos por alunos de 6º ano do Ensino Fundamental em uma escola da Rede Pública Estadual na resolução de questões referentes às operações com frações e quais as problemáticas encontradas por eles na resolução de problemas envolvendo operações com frações. Participaram do estudo 29 alunos do 6º ano do Ensino Fundamental de um colégio estadual do Agreste Sergipano. Para a coleta de dados foram aplicados dois questionários. O primeiro, continha sete questões diretas para os alunos efetuarem operações com frações e o segundo continha seis questões nas quais era necessário interpretar para resolver os problemas, essas questões também envolvendo conhecimentos relacionados às frações e suas operações. Para a análise do primeiro questionário utilizamos a Análise de Erros (Cury 1994), onde quantificamos e descrevemos os tipos de erros cometidos pelos alunos na resolução das questões. Nesta detectamos que as maiores dificuldade enfrentadas estão relacionadas a erros na adição e subtração de frações. Já no segundo questionário que aborda resolução de problemas, utilizamos a análise qualitativa de conteúdo e as fases de resolução de problemas de Polya (1995). Para tanto buscamos identificar em qual fase os alunos apresentam maiores dificuldades na resolução de problemas. Os resultados do segundo questionário comprovam que uma das maiores dificuldades dos alunos é de compreender o problema, o que não permite que estabeleça e execute o plano de resolução. Itabaiana, SE

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES The present work was developed with the purpose of investigating the difficulties presented by seventh year students regarding the four fundamental operations (addition, subtraction, multiplication and division) in the study of Fractions and at the same time to analyze if these same difficulties persist with The first year of high school. It is noticed that this subject is little explored in the textbooks of elementary education and with this the students demonstrated a certain difficulty in its resolutions, since the students of the high school presented more difficulties. The research was based on a qualitative approach and a field research. A questionnaire was applied to twenty students from the seventh grade class and to twenty students from a first year class at state college, located in the city of Nossa Senhora da Glória, state of Sergipe. The analysis of the data was made through studies of the obstacles and analysis of the errors presented by the students in the resolution of the questionnaire. In the face of all the difficulties encountered by the students, we conclude that there is a long way to go so that the students have a satisfactory knowledge about the subject of the study. O presente trabalho foi desenvolvido com o intuito de investigar quais são as dificuldades apresentadas por alunos do sétimo ano com relação as quatro operações fundamentais (adição, subtração, multiplicação e divisão) no estudo das Frações e ao mesmo tempo analisar se essas mesmas dificuldades persistem com os alunos do primeiro ano do Ensino Médio. Percebe-se que este assunto é pouco explorado nos livros didáticos do Ensino Fundamental e com isso os alunos demonstraram uma certa dificuldade nas suas resoluções, visto, apresentaram mais dificuldades os alunos do ensino médio. A pesquisa fundamentou-se numa abordagem qualitativa e numa pesquisa de campo. Foi feita a aplicação de um questionário a vinte alunos da turma do sétimo ano e a vinte alunos de uma turma de primeiro ano do colégio estadual localizada na cidade de Nossa Senhora da Glória, estado de Sergipe. A análise dos dados deu-se mediante estudos dos obstáculos e análise dos erros apresentados pelos alunos na resolução do questionário. Diante de todas as dificuldades encontradas pelos alunos, concluímos que há um longo caminho a ser percorrido para que os alunos tenham um conhecimento satisfatório sobre o tema do estudo. Itabaiana, SE

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES This research had the purpose to identify students' difficulties in the financial mathematics problem solving as well, analyze the mistakes made by them. The study involved 39 students of the 3rd year in high school of a state school at the Sergipano High Hinterland. The data collection included the application of two questionnaires with four questions each, both involving the same Financial Mathematics subjects. For the analysis of the first questionnaire was used Error Analysis (Cury 1994) and Movshovitz-Hadar, Zaslavsky and Inbar Model (1986, 1987) quoted by Cury (2007), in order to meet and categorize the types of errors made by the students in the resolution of issues. In the second questionnaire, consisted of problems, we used the qualitative analysis and the phases considered by Polya (1995) to solve problems. From this perspective, we tried to identify the stage that presents itself as the most difficulties of students in problem solving. In the analysis of the first questionnaire, we detected that the biggest difficulty faced is related to technical errors, errors involving calculations and algebraic manipulations. This showed us how the deficit in the operations reflects in the learning of other mathematical content. The second questionnaire proved our mistrust that the greatest difficulty faced by students in problem solving is in the interpretation of the statements. Esta pesquisa teve o propósito de identificar as dificuldades dos alunos na resolução de problemas em Matemática Financeira bem como, analisar os erros cometidos por eles. O estudo envolveu 39 estudantes do 3º ano do Ensino Médio de um colégio estadual do Alto Sertão Sergipano. A coleta de dados contou com a aplicação de dois questionários com quatro questões cada um, ambos envolvendo os mesmos assuntos de Matemática Financeira. Para a análise do primeiro questionário foi utilizada a Análise de Erros (Cury 1994) e o Modelo de Movshovitz-Hadar, Zaslavsky e Inbar (1986, 1987) citado por Cury (2007), com a finalidade de conhecer e categorizar os tipos de erros cometidos pelos alunos na resolução das questões. Já no segundo questionário, composto por problemas, foi utilizada a análise qualitativa de conteúdo e as fases consideradas por Polya (1995) para a resolução de problemas. Nessa ótica, procuramos identificar a fase que se apresenta como a maior dificuldade dos alunos na resolução de problemas. Na análise do primeiro questionário detectamos que a maior dificuldade enfrentada está relacionada a erros técnicos, que envolvem erros de cálculos e manipulações algébricas. Isso nos mostrou como o déficit nas operações reflete na aprendizagem dos demais conteúdos matemáticos. O segundo questionário comprovou nossa suspeita de que a maior dificuldade enfrentada pelos discentes na resolução de problemas está na interpretação dos enunciados.

The importance and role of digital marketing in today’s competitive world is rapidly increasing. The surge and rapid expansion of digital technologies and especially, the Internet has propelled a shift in the consumers’ habits and consequently in the strategies that firms must employ to attract the maximum number of consumers possible towards their products and/or services. Within these efforts, the online lead generation process is gaining steam and is currently an extremely important activity which most firms in most industries perform. This process has been a target of much attention very recently with several articles published in world renowned business magazines and websites, however up until now, no scientific methodology has been proposed to advise firms in the optimal quantity of online leads to be generated. This research suggests the application of Game Theory to develop a useful model that has the potential to help digital marketing managers in their task of selecting the optimal quantity of online leads to be generated for the period in preparation in the most efficient and effective way possible in order to achieve their objectives. The proposed model, GameOn, can be used in several scenarios evidencing its wide flexibility. GameOn is developed with two different functional forms, the natural logarithm and square root, to provide digital marketing managers with the choice of which best fits their data and select it. An application scenario is developed, as well as a case study, and their results discussed in depth. Two types of equilibrium, Nash and Stackelberg, are determined and discussed. With very satisfactory and encouraging results, the potential, efficiency and effective improvements brought on by the use of GameOn are evaluated and discussed and other possible applications scenarios of GameOn are introduced.