892 resultados para Tecnologia - Brasil
Resumo:
Heavy metals are present in industrial waste. These metals can generate a large environmental impact contaminating water, soil and plants. The chemical action of heavy metals has attracted environmental interest. In this context, this study aimed to test t he performance of electrochemical technologies for removing and quantifying heavy metals. First ly , the electroanalytical technique of stripping voltammetry with glassy carbon electrode (GC) was standardized in order to use this method for the quantificatio n of metals during their removal by electrocoagulation process (EC). A nalytical curves were evaluated to obtain reliability of the determin ation and quantification of Cd 2+ and Pb 2+ separately or in a mixture. Meanwhile , EC process was developed using an el ectrochemical cell in a continuous flow (EFC) for removing Pb 2+ and Cd 2+ . The se experiments were performed using Al parallel plates with 10 cm of diameter ( 63.5 cm 2 ) . The optimization of conditions for removing Pb 2+ and Cd 2+ , dissolved in 2 L of solution at 151 L h - 1 , were studied by applying different values of current for 30 min. Cd 2+ and Pb 2+ concentrations were monitored during electrolysis using stripping voltammetry. The results showed that the removal of Pb 2 + was effective when the EC pro cess is used, obtaining removals of 98% in 30 min. This behavior is dependent on the applied current, which implies an increase in power consumption. From the results also verified that the stripping voltammetry technique is quite reliable deter mining Pb 2+ concentration , when compared with the measurements obtained by atomic absorption method (AA). In view of this, t he second objective of this study was to evaluate the removal of Cd 2+ and Pb 2+ (mixture solution) by EC . Removal efficiency increasing current was confirmed when 93% and 100% of Cd 2+ and Pb 2+ was removed after 30 min . The increase in the current promotes the oxidation of sacrificial electrodes, and consequently increased amount of coagulant, which influences the removal of heavy metals in solution. Adsortive voltammetry is a fast, reliable, economical and simple way to determine Cd 2+ and Pb 2+ during their removal. I t is more economical than those normally used, which require the use of toxic and expensive reagents. Our results demonstrated the potential use of electroanalytical techniques to monitor the course of environmental interventions. Thus, the application of the two techniques associated can be a reliable way to monitor environmental impacts due to the pollution of aquatic ecosystems by heavy metals.
Resumo:
We propose in this work, a new method of conceptual organization of areas involving assistive technology, categorizing them in a logical and simple manner; Furthermore, we also propose the implementation of an interface based on electroculography, able to generate high-level commands, to trigger robotic, computer and electromechanical devices. To validate the eye interface, was developed an electronic circuit associated with a computer program that captured the signals generated by eye movements of users, generating high-level commands, able to trigger an active bracing and many other electromechanical systems. The results showed that it was possible to control many electromechanical systems through only eye movements. The interface is presented as a viable way to perform the proposed task and can be improved in the signals analysis in the the digital level. The diagrammatic model developed, presented as a tool easy to use and understand, providing the conceptual organization needs of assistive technology
Resumo:
In this work, the treatment of wastewater from the textile industry, containing dyes as Yellow Novacron (YN), Red Remazol BR (RRB) and Blue Novacron CD (NB), and also, the treatment of wastewater from petrochemical industry (produced water) were investigated by anodic oxidation (OA) with platinum anodes supported on titanium (Ti/Pt) and boron-doped diamond (DDB). Definitely, one of the main parameters of this kind of treatment is the type of electrocatalytic material used, since the mechanisms and products of some anodic reactions depend on it. The OA of synthetic effluents containing with RRB, NB and YN were investigated in order to find the best conditions for the removal of color and organic content of the dye. According to the experimental results, the process of OA is suitable for decolorization of wastewaters containing these textile dyes due to electrocatalytic properties of DDB and Pt anodes. Removal of the organic load was more efficient at DDB, in all cases; where the dyes were degraded to aliphatic carboxylic acids at the end of the electrolysis. Energy requirements for the removal of color during OA of solutions of RRB, NB and YN depends mainly on the operating conditions, for example, RRB passes of 3.30 kWh m-3 at 20 mA cm-2 for 4.28 kWh m-3 at 60 mA cm-2 (pH = 1); 15.23 kWh m-3 at 20 mA cm-2 to 24.75 kWh m-3 at 60 mA cm-2 (pH 4.5); 10.80 kWh m-3 at 20 mA cm-2 to 31.5 kWh m-3 at 60 mA cm-2 (pH = 8) (estimated data for volume of treated effluent). On the other hand, in the study of OA of produced water effluent generated by petrochemical industry, galvanostatic electrolysis using DDB led to the complete removal of COD (98%), due to large amounts of hydroxyl radicals and peroxodisulphates generated from the oxidation of water and sulfates in solution, respectively. Thus, the rate of COD removal increases with increasing applied current density (15-60 mAcm-2 ). Moreover, at Pt electrode, approximately 50% removal of the organic load was achieved by applying from 15 to 30 mAcm-2 while 80% of COD removal was achieved for 60 mAcm-2 . Thus, the results obtained in the application of this technology were satisfactory depending on the electrocatalytic materials and operating conditions used for removal of organic load (petrochemical and textile effluents) as well as for the removal of color (in the case of textile effluents). Therefore, the applicability of electrochemical treatment can be considered as a new alternative like pretreatment or treatment of effluents derived from textiles and petrochemical industries.
Resumo:
The recognition of karst reservoirs in carbonate rocks has become increasingly common. However, most karst features are small to be recognized in seismic sections or larger than expected to be investigated with borehole data. One way forward has been the study of analogue outcrops and caves. The present study investigates lithofacies and karst processes, which lead to the generation of the largest system of caves in South America. The study area is located in the Neoproterozoic Una Group in central-eastern Brazil. This province comprises several systems of carbonate caves (Karmann and Sanchéz, 1979), which include the Toca da Boa Vista and Barriguda caves, considered the largest caves in South America (Auler and Smart, 2003). These caves were formed mainly in dolomites of the Salitre Formation, which was deposited in a shallow marine environment in an epicontinental sea (Medeiros and Pereira, 1994). The Salitre Formation in the cave area comprises laminated mud/wakestones, intraclastic grainstones, oncolitic grainstones, oolitic grainstones, microbial laminites, colunar stromatolites, trombolites and fine siliciclastic rocks (marls, shales, and siltites). A thin layer and chert nodules also occur at the top of the carbonate unit. Phosphate deposits are also found. Our preliminary data indicate that folds and associated joints control the main karstification event at the end of the Brasiliano orogeny (740-540 Ma). We recognized five lithofacies in the cave system: (1) Bottom layers of grainstone with cross bedding comprise the main unit affected by speleogenesis, (2) thin grainstone layers with thin siltite layers, (3) microbial laminites layers, (4) layers of columnar stromatolites, and a (5) top layer of siltite. Levels (1) to (3) are affected by intense fracturing, whereas levels (4) and (5) seal the caves and have little fracturing. Chert, calcite and gipsite veins cut across the carbonate units and play a major role in diagenesis. Our preliminary study indicate that hypogenic spelogenesis is the main process of karst development and contributed significantly to the generation of secondary porosity and permeability in the carbonate units.
Resumo:
Inaccurate diagnosis of vulvovaginitis generates inadequate treatments that cause damages women's health. Objective: evaluate the effectiveness of methods when diagnosing vulvovaginitis. Method: a cross-sectional study was performed with 200 women who complained about vaginal discharge. Vaginal smear was collected for microbiological tests, considering the gram stain method as gold standard. The efficacy of the available methods for diagnosis of vaginal discharge was assessed (sensitivity, specificity, positive predictive value and negative predictive value). Data were inserted to Graphpad Prism 6, for statistical analysis. Results: the following results were obtained: wet mount for vaginal candidiasis: sensitivity = 31%; specificity = 97%; positive predictive value (PPV) = 54%; negative predictive value (NPV) =93%; accuracy = 91%. Wet mount for bacterial vaginosis: sensitivity = 80%; specificity =95%; positive predictive value (PPV) = 80%; negative predictive value (NPV) = 95%; accuracy = 92%. Syndromic approach for bacterial vaginosis: sensitivity = 95%; specificity=43%; positive predictive value (PPV) =30%; negative predictive value (NPV) = 97%; accuracy = 54%. Syndromic approach for vaginal candidiasis: sensitivity = 75%; specificity =91%; positive predictive value (PPV) = 26%; negative predictive value (NPV) = 98%; accuracy = 90%. Pap smear for vaginal candidiasis: sensitivity = 68%, specificity = 98%; positive predictive value (PPV) = 86%; negative predictive value (NPV) =96%; accuracy = 96%. Pap smear for bacterial vaginosis: sensitivity = 75%; specificity = 100%; positive predictive value (PPV) = 100%; negative predictive value (NPV) =94%; accuracy = 95%. There was only one case of vaginal trichomoniasis reported – diagnosed by oncological cytology and wet mount – confirmed by Gram. The syndromic approach diagnosed it as bacterial vaginosis. From the data generated and with support on world literature, the Maternidade Escola Januário Cicco’s vulvovaginitis protocol was constructed. Conclusion: Pap smear and wet mount showed respectively low and very low sensitivity for vaginal candidiasis. Syndromic approach presented very low specificity and accuracy for bacterial vaginosis, which implies a large number of patients who are diagnosed or treated incorrectly.
Resumo:
The increasing pace of technological change and innovation in the labor market are important landmarks that contribute to accelerate the improvement of vocational and technological education. The need to analyze the educational processes is correlated with this dynamic in order to respond to the pedagogical processes and inherent to the labor market needs in evidence. This research theme is centered on targeted education process for tourist activity that is premised on improving the quality of services, taking as analysis parameter technological higher education in the federal education network (IF), covering the design, similarity and the differences in the courses offered, the axis of Tourism, Hospitality and Leisure instituted by the National catalog Technological Colleges and the National Science and Technology Department in Brazil. The research also aims to investigate the design and implementation of these upper and search courses emphasize the importance of training for students. The research is exploratory qualitative from survey data on the websites of the Ministry of Education, was adopted as a research procedure the questionnaire sent to coordinators via institutional email courses, to collect data in order to obtain results about Technological Education Federal Education Network. The survey results show that most courses offered by technological higher education in the federal education network (IF) is the Tourism Management, we noted that this option is the result of the ease in assembling the structure of the courses in relation to others; teachers have this type of education a more practical option for students coming to the conclusion that the courses undergo a fragile process, stating that the formation lies only in the student's interest in obtaining the higher diploma course without concern for quality this academic background, demand for courses is by being fast graduation. Even as a result of the design and development of Political and Pedagogical projects it was found that they are built in the most collegial many of them without the participation of a pedagogue; about the permanence of the student identified a high dropout rate, occurring in some campuses to migration to the traditional higher education, a BA in tourism. Thus, this work aimed to contextualize the technological higher education in tourism, presenting the reality of the current situation, aiming to discuss the phenomenon from the description made by all subjects and the research object, knowledge of which is due to experience the federal education network that was able to bring the essence of the matter.
Resumo:
This study investigates the religious group named 'shoe wearing carmelites' (or Calced Carmelites) from Brazil´s Order of Carmo, from 1580 until 1800, in the Capitaincy of Bahia de Todos os Santos (Recôncavo, city of Salvador and Sergipe) and in the Capitaincy of Pernambuco (Alagoas, Pernambuco and Itamaracá). The study does not include the religious group known as the 'Reformed' Carmelites from Goiana, Recife and Paraíba convents. The Order of Carmo is a religious order from the Roman Catholic Church, founded in the 12th century. By the 16th century they were split into 'Calced' and 'Discalced'. In 1580 the Calced ones came from Portugal to Brazil, built convents in urban areas and were able to acquire slaves, farms and other assets. As any other religious order, the Carmelites had their modus operandi. This work emphasizes the way they operated or acted in the city, either individually or in association with other Carmelite religious foundations elsewhere (networking). Their action affected, although indirectly, the building of some specific aspects of the architecture, the city and the territory in colonial Brazil. The main objective of this study is to demonstrate the impact of the Calced Carmelites from Bahia and Pernambuco upon the territory of colonial Brazil, which is analyzed according to three scales: 1) the region or interurban; 2) the city or intraurban; 3) the building or the architecture. The research employs the comparative method of analysis, especially for the architectural scale. The work demonstrates that although not acting as architects or urbanists, the Carmelites contributed to the formation of the colonial territory of Brazil, behaving as a well-articulated and hierarchized religious network, from an economic and social perspective. Moreover, they influenced the emergence and growth of several colonial urban nuclei, from Bahia to Pernambuco, mainly in the surroundings of their religious buildings. Finally, it is very clear this religious order’s contribution to colonial architecture, as it can be seen by the architectural characteristics of the convents and churches which have been analyzed, many of which still stand in a good state of conservation nowadays.
Resumo:
The aim of this study is to assess the attitudes and knowledge of consumers about irradiated foods. The study sample corresponded to 65.52% women and the mean age was 41.82 (SD: 14.33) years. Only 66.9% of respondents consumers consult the list of ingredients on the label of packaged foods, and 13.4% of them said they had detected the phrase “FOOD TREATED BY IRRADIATION PROCESS.” Furthermore, 86.6% considered that irradiation becomes unsafe food and thus 94.9% of those not consume these foods, as well as 29.6% of those who felt otherwise. Women had a score of attitude towards irradiated foods less favorable than men. The television was considered the most efficient means of communication to report on irradiated foods. We conclude that consumers of the city of Natal lack information about food irradiation and acceptance of these products depends on how the policies are directed to food security and health education, including through the use of sources of mass information dissemination. The information on the labels of irradiated foods is controversial, although sufficient instruments for detection of irradiated foods by these consumers.
Resumo:
The focus of this study is to draw attention to the intergenerational family’s lifestyles and their various ways of cohabitation, in special to those families which are made by individuals of different generations, these families being constituted of, two or more individuals, or, two or more smaller families, which live under the same roof and have the elderly person as referential in their cohabitation. In those types of families, as for their ways of organization, it is interesting to note that the researches and productions done by inner architects and inner designers do not include this type of family arrangement because their studies do not cover this kind of structuralization nor was this type of organization put together with any of the ways of cohabitation. Therefore there is a theoretical concept void which is propositional, interventional and does not relate to the empirical reality. In observation to these remarks, the research starts a theoretic challenge of deconstruct or reconstruct our modern only habitational template, which is used today in all families configurations which out any regards to where this template will be used, unfitting to the intergenerational families who have elders. This study is then meant to give an differential analysis of the various domestic space’s templates in regards to the new families formats, their basic and special necessities, the home identities of those families which indicates the differential gap in housing and lifestyle from the higher social classes in comparison to the lower social classes. The interdisciplinary method was chosen in order to describe arrangements found in the lifestyles and the ways of cohabitation of the intergenerational families, this method is used for its knowledge base that better articulates the procedure method and the inductive reflexive approach made possible after an qualitative research. In order to accomplish that, an geographical space which tow real possibilities was selected, that is, the space where the people of great social and anthropological proximity are concentrated and the people which are the researcher kinships and friends, in between those are the habitants of Capim Macio’s, Candelária’s, Tirol’s and Petrópolis’s, neighborhoods, located in the south west zone of her home city Natal. It has been noticed that, meanwhile these intergenerational spaces do not claim their said spaces, because of their habits, necessities and relations in between generations and gender, their arrangements of said space are extremely creative. That means that alterations in the concepts of planning, construction and utilization of built spaces are imperative.
Resumo:
The focus of this study is to draw attention to the intergenerational family’s lifestyles and their various ways of cohabitation, in special to those families which are made by individuals of different generations, these families being constituted of, two or more individuals, or, two or more smaller families, which live under the same roof and have the elderly person as referential in their cohabitation. In those types of families, as for their ways of organization, it is interesting to note that the researches and productions done by inner architects and inner designers do not include this type of family arrangement because their studies do not cover this kind of structuralization nor was this type of organization put together with any of the ways of cohabitation. Therefore there is a theoretical concept void which is propositional, interventional and does not relate to the empirical reality. In observation to these remarks, the research starts a theoretic challenge of deconstruct or reconstruct our modern only habitational template, which is used today in all families configurations which out any regards to where this template will be used, unfitting to the intergenerational families who have elders. This study is then meant to give an differential analysis of the various domestic space’s templates in regards to the new families formats, their basic and special necessities, the home identities of those families which indicates the differential gap in housing and lifestyle from the higher social classes in comparison to the lower social classes. The interdisciplinary method was chosen in order to describe arrangements found in the lifestyles and the ways of cohabitation of the intergenerational families, this method is used for its knowledge base that better articulates the procedure method and the inductive reflexive approach made possible after an qualitative research. In order to accomplish that, an geographical space which tow real possibilities was selected, that is, the space where the people of great social and anthropological proximity are concentrated and the people which are the researcher kinships and friends, in between those are the habitants of Capim Macio’s, Candelária’s, Tirol’s and Petrópolis’s, neighborhoods, located in the south west zone of her home city Natal. It has been noticed that, meanwhile these intergenerational spaces do not claim their said spaces, because of their habits, necessities and relations in between generations and gender, their arrangements of said space are extremely creative. That means that alterations in the concepts of planning, construction and utilization of built spaces are imperative.
Resumo:
In this work, the oxidation and mineralization of paracetamol, based in an advanced oxidative process promoted by heterogeneous photocatalysis, was evaluated. The action of two photocatalysts (titanium dioxide, and a composite based on the association between titanium dioxide and zinc phthalocyanine dye) was studied. First of all, experiments in laboratory scale were performed using as radiation font a 400 W high pressure mercury lamp. The mineralization of paracetamol, promoted by both photocatalysts, was evaluated working with 4L of solution containing 10 mg L-1 of paracetamol and 100 mg L-1 of photocatalyst. To find the best experimental conditions, the influence of hydrogen peroxide concentration and pH was evaluated for the reactions. The best results for the reactions in laboratory scale was obtained using 33,00 mg L-1 of hydrogen peroxide in natural pH (6,80). Under these conditions, 100% oxidation was reached in just 40 minutes of reaction using TiO2 P25, while the mineralization was 78%. Using the composite, the mineralization was 63% in 2 hours of reaction and a oxidation of almost 100% was reached after 60 minutes. A CPC reactor (compound parabolic concentrator) was employed in the expanded work scale, using the sun as irradiation source. In this case the experiments were performed using 50 L of aqueous solution containing 10 mg L-1 of paracetamol and 100 mg L-1 of photocatalyst. The assays were done at pH 3,00 and natural pH (6,80). The used concentration of hydrogen peroxide was 33,00 mg L-1, adopted after laboratory scale studies. The reaction at pH 3,00 shows to be more advantageous, since under natural pH (6,80), the use of deionized water was necessary to prepare the solutions, probably because the deleterious action of carbonate ions, known hydroxyl radical scavengers. Using solar irradiation, the reaction mediated by the composite was more efficient when compared with the assays under laboratory scale since the composite presents the advantage of promoting a better use of visible radiation. Under these conditions, the mineralization increased from 40% to 56% under pH 3,00. At natural pH the oxidation occurred more slowly and the mineralization decreased from 56% to 50%. Thus, the use of pH 3,00 will be more interesting in real scale applications, even if it is necessary the pH correction before the discard of the treated effluent to the environment.
Resumo:
A pesquisa considera a difusão de celulares e smartphones e as consequências deste fato em possibilidades para o ensino-aprendizagem. Aparatos de comunicação sempre estiveram ligados ao processo de ensino-aprendizagem. Entretanto, com o desenvolvimento mais intenso, nas últimas décadas, das Tecnologias de Informação e Comunicação (TIC), essa relação vem ganhando novos contornos. Surge a Internet, a evolução das máquinas computacionais e, recentemente, a explosão dos dispositivos móveis, fornecendo novos produtos e serviços convergentes. Nesse contexto, celulares e smartphones tem sido utilizados e recomendados para apoio e complemento do processo de ensino-aprendizagem: a chamada Aprendizagem Móvel. Esse ramo cresce devido à rápida expansão e barateamento dessas tecnologias na sociedade. Para verificar cientificamente essa relação foi realizada uma pesquisa de natureza qualitativa, do tipo exploratória, com dois projetos de Aprendizagem Móvel em andamento no Brasil, o Palma – Programa de Alfabetização na Língua Materna e o Escola Com Celular – ECC. Assim, a partir dos dados provenientes da pesquisa, identificamos alguns aspectos relacionados ao uso de celulares e smartphones para o processo de ensino-aprendizagem que contribuem na compreensão desse campo ainda em construção no Brasil. O uso desses dispositivos como suporte para processos de ensino-aprendizagem nos projetos estudados é delineado pelos aspectos tecnologia, dispositivo, público e contexto e novas tecnologias e Aprendizagem Móvel. O aspecto dispositivo desdobra-se em dimensões como disseminação, multifuncionalidade e acessibilidade que embasam os projetos, ainda favorece características apontadas como importantes para o processo de ensino-aprendizagem na atualidade, como mobilidade e portabilidade. Os projetos pesquisados demonstram potencial e metodologia adequada aos contextos para os quais foram criados e aplicados. Entretanto, a pesquisa indicou que ao mesmo tempo em que celulares e smartphones representam o ápice da convergência tecnológica e são considerados extremamente populares e acessíveis na sociedade contemporânea, com possibilidades concretas como nos projetos estudados, não conseguiram conquistar uma posição sólida como suporte para o ensino-aprendizagem. Tal indicação se deve, de acordo com o corpus, à carência de alguns fatores, como: fomento, as práticas se mostram extremamente dependentes da iniciativa pública ou privada para sua extensão e continuidade; sensibilização para o uso de tecnologias disponíveis, não consideram o aparelho dos próprios alunos e um planejamento que inclua, capacite e incentive o uso desses dispositivos. Além disso, a pesquisa também destaca a necessidade de uma visão crítica do uso e papel da tecnologia nesses processos.
Resumo:
Identidade, cultura e tecnologia são os temas centrais desta dissertação. Quando esses três elementos se encontram, diversas oportunidades e possibilidades são oferecidas aos indivíduos. O site Omelete, objeto de pesquisa escolhido, é resultado de um projeto elaborado por amigos, fãs de histórias em quadrinhos e games, que não encontravam informações suficientes sobre seus temas favoritos e decidiram criar um blog para compartilhar conteúdos sobre cultura pop e satisfazer suas curiosidades e vontades. Hoje, o que nasceu como blog é considerado o maior veículo online sobre cultura pop do Brasil. O objetivo da dissertação foi verificar as características do objeto e do contexto em que se encontra e quais fatores o colocaram em sua posição atual. Para isso, primeiro fizemos uma revisão de literatura para estabelecer as bases teóricas da dissertação. Depois, categorizamos o conteúdo publicado no site sobre a Comic-Con International: San Diego durante um período determinado e analisamos os dados obtidos. Por último, descrevemos o evento Comic Con Experience, organizado pelo Omelete e pela Chiaroscuro, e averiguamos as informações colhidas desde a revisão de literatura até a experiência pessoal na convenção. A sociedade na qual vivemos permite o surgimento, o desenvolvimento e a manutenção de tribos e culturas variadas. É uma sociedade em que a tecnologia oferece ferramentas para as pessoas poderem se comunicar, compartilhar informações e interagir com internautas com interesses semelhantes, como o consumo dos mesmos produtos culturais. Essas ações são responsáveis pela formação da identidade dos indivíduos e dos grupos a que pertencem. De forma participativa, os grupos constroem conhecimento e fortalecem a inteligência coletiva.
Resumo:
Este trabalho realizado, inicialmente, com base na análise de alguns documentos referentes à legislação educacional brasileira vigente tem por objetivo desenvolver uma investigação acerca da aplicabilidade da Assistência Estudantil dentro do Instituto Federal de Educação, Ciência e Tecnologia de São Paulo (IFSP). A partir da questão do Direito à Educação de todo cidadão, que está garantido em nossa Constituição Federal, o governo elaborou, no ano de 2010, o Programa Nacional de Assistência Estudantil (PNAES). Respaldados nesse Programa, o IFSP criou, em 2011, o Programa de Assistência Estudantil (PAE), dando validade e continuidade às ações desenvolvidas nos Campi para minimizar a evasão e o fracasso escolar, com vistas a garantir a permanência dos educandos no referido Instituto. Embora o PAE tenha sido implementado em todos os Campi do IFSP, no decorrer do presente trabalho analisamos e estudamos, exclusivamente, o Campus Cubatão, localizado na região da Baixada Santista devido a, dentre outros fatores, ter sido a primeira unidade descentralizada dos Institutos Federais do país. Assim, neste estudo, temos como objetivo analisar a estrutura de funcionamento do IFSP com o intuito específico de investigar o Campus de Cubatão, verificar as questões de Vulnerabilidade Social encontradas na destacada instituição, averiguar as ações do PAE que nascem do PNAES, observar a aplicabilidade desse programa com base no princípio da Gratuidade Ativa e do Direito à Educação de todo cidadão. Para tanto, utilizamos, fundamentalmente, além da legislação já mencionada, o princípio da Gratuidade Ativa de Melchior (2011) e o conceito de Vulnerabilidade Social proposto por Alves (1994) e por Abramovay (2002).
Resumo:
Vivemos um período de transformações políticas, econômicas, sociais e culturais que, a todo instante, nos impõe desafios. Neste contexto, nas últimas décadas, o uso da tecnologia tem sido ampliado na realização de diversas atividades cotidianas, na divulgação de informações, na comunicação, como forma de expressão e organização da sociedade. A escola, enquanto instituição social, precisa reconhecer esta nova realidade, esta diferente possibilidade de aquisição e transformação de saber, para que possa intervir, ressignificar e redirecionar sua ação, a fim de atender as demandas de seu tempo. O objetivo geral desta pesquisa, a partir da apresentação e análise de experiências realizadas com o uso de Tecnologias da Informação e Conhecimento, é o de refletir sobre como inserir estas ferramentas no processo de ensinar e aprender na escola a partir da visão de professores e alunos, visando a formação integral do educando. Deste modo, no desenvolvimento, entendemos como necessário conhecer e considerar o contexto histórico, bem como as perspectivas relacionadas a escola e seus protagonistas (professores e estudantes) na chamada Sociedade da Informação e do Conhecimento. Ressaltamos a importância do docente (sua formação) e seu papel de mediador nos processos de aprendizagem, assim como a recepção à tecnologia, observando função e espaço de atuação desta. Destacamos experiências com a utilização de TDIC, realizada por professores e alunos, como a produção de game, revistas científicas, escrita de histórias, produções artísticas, blogs, vlogs, discussões em grupos presentes em redes sociais. A metodologia utilizada nesta pesquisa é qualitativa, na modalidade de pesquisa-ação e narrativa, em função do envolvimento com o grupo e com as atividades desenvolvidas, nas quais os participantes compartilham com o pesquisador suas histórias pessoais e de aprendizagem relacionadas às ações ou às atividades que realiza, fornecendo informações e indícios relevantes sobre o seu processo de formação ao longo do tempo. A revisão de literatura foi realizada por meio de análise bibliográfica e documental em livros, teses, dissertações, periódicos específicos sobre o assunto, além de artigos publicados na Internet. A coleta de dados foi realizada a partir de conversas informais, entrevistas semiestruturadas e filmagem dos relatos. A análise foi realizada a partir da abordagem hermenêutico-fenomenológica, que busca descrever e interpretar fenômenos da experiência humana, a fim de investigar a essência por meio da identificação de temas. Os resultados apontam para a necessidade e possibilidade da ampliação da utilização de TDIC como recurso no processo de ensino e aprendizagem, por meio de formação, diálogo, interação, intencionalidade, expectativas, esperança e seus desdobramentos.