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    6195 research outputs found

    Hydraulic Planning in Insular Urban Territories: The Case of Madeira Island—Ribeira Brava, Tabua

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    This study’s primary goal was to conduct an analysis of the flood propensity of the Tabua (Ribeira Brava) drainage basin’s main watercourse. In addition to that, this study also recommends two different methodologies in order to mitigate flood impacts, namely by dimensioning a detention basin and adjusting the riverbed roughness coefficient. Regarding the study on the flood propensity, it was necessary to resort to geomorphological data, which were obtained when characterizing the watershed; these data were crucial to determining the expected peak flow rate, according to the Gumbel distribution methodology and considering a 100-year return period, and to perform necessary tasks in the SIG ArcGIS 10.5 software. Lastly, the drainage capacity of this drainage basin’s river mouth was also analyzed in order to conclude whether it would have the capacity to drain the total volume of rainwater if an extreme flood event were to happen. Indeed, the main results show that this watershed’s river mouth does not have the necessary drainage capacity to cope with an extreme event for the return period that was considered. As a consequence, the two aforementioned mitigation measures were developed considering the Tabua (Ribeira Brava) drainage basin’s specific features. The size of the detention basin was estimated through the Dutch method and the simplified triangular hydrograph method, while the adjustment of the roughness coefficient was considered a valid solution to enhance the drainage capacity of this river mouth.info:eu-repo/semantics/publishedVersio

    Relatório de Estágio para a Obtenção do Grau de Mestre em Educação Pré-Escolar e Ensino do 1.º Ciclo do Ensino Básico

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    O propósito da elaboração deste relatório de estágio foi alcançar a obtenção do grau de mestre em Educação Pré-Escolar e Ensino do 1.º Ciclo do Ensino Básico. O objetivo principal é destacar, vivenciar e refletir sobre todas as Práticas Pedagógicas, nomeadamente a Prática Pedagógica I, II e III realizadas ao longo deste mestrado nos anos letivos 2021/2022 e 2022/2023. No presente relatório depara-se a análise e reflexão das Práticas Pedagógicas sustentada pela fundamentação teórica. Este encontra-se estruturado em duas partes claramente distintas: o Enquadramento Teórico e Metodológico e o Enquadramento da Prática Pedagógica. As intervenções pedagógicas realizaram-se no contexto da Pré-Escolar e 1.º Ciclo do Ensino Básico (uma intervenção no 2.º ano e a outra no 3.º ano de escolaridade). As práticas educativas consistiram-se em conhecimentos teóricos, que foram aprofundados e relacionados ao contexto prático. O principal foco foi contribuir para o desenvolvimento, tendo em consideração as preferências e necessidades das crianças e alunos, adotei predominantemente a Metodologia de Investigação-Ação, com o objetivo de responder as questões: “Como promover as regras de convivência com as crianças da sala do Arco-Íris?” na Prática Pedagógica I; “Como potenciar aprendizagens nos alunos através das expressões artísticas?” na Prática Pedagógica II. É, de salientar que, na última prática continuei com a mesma turma e não realizei nenhuma questão para investigação-ação. Para findar, as expressões artísticas, o ensino experimental e as outras áreas curriculares têm um papel fundamental na educação, pois contribuem para o desenvolvimento dos alunos. Estas áreas quando são trabalhadas de forma interligadas suscitam nos alunos a curiosidade, a capacidade de se expressar, o espírito crítico entre outros. Assim sendo, os alunos ficam “preparados” para serem participantes ativos na sociedade.The internship report was built with the intention of obtaining the master's degree in Pre-School Education and Teaching of the 1st Cycle of Basic Education, in which it intends to highlight, experience and reflect on all the practices carried out throughout this master's degree in the academic years 2021/2022 and 2022/2023. In this report is the analysis and reflection of Pedagogical Practices supported by the theoretical foundation. This is structured in two distinct parts: the Theoretical and Methodological Framework and the Framework of Pedagogical Practice. The pedagogical interventions were carried out in the scope of the Pre-School and 1st Cycle of Basic Education (one intervention in the 2nd year and the other in the 3rd year of schooling). The educational practices consisted of theoretical knowledge, which was deepened and related to the practical context. The main focus was to contribute to development, taking into account the interests and needs of children and students. As the main methodology I used the Research-Action Methodology, in order to answer the questions: "How to promote the rules of coexistence with the children of the Rainbow room?" in Pedagogical Practice I; "How to enhance learning in students through artistic expressions?" in Pedagogical Practice II. It should be noted that in the last practice I continued with the same class and did not perform any question for action-investigation. Finally, artistic expressions, experimental teaching and other curricular areas have a fundamental role in education, as they contribute to the development of students. These areas when they are worked in an interconnected way arouse in the students the curiosity, the ability to express themselves, the critical spirit among others. Thus, students are "prepared" to be active participants in society

    Non-Destructive Banana Ripeness Detection Using Shallow and Deep Learning: A Systematic Review

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    The ripeness of bananas is the most significant factor affecting nutrient composition and demand. Conventionally, cutting and ripeness analysis requires expert knowledge and substantial human intervention, and different studies have been conducted to automate and substantially reduce human effort. Using the Preferred Reporting Items for the Systematic Reviews approach, 1548 studies were extracted from journals and conferences, using different research databases, and 35 were included in the final review for key parameters. These studies suggest the dominance of banana fingers as input data, a sensor camera as the preferred capturing device, and appropriate features, such as color, that can provide better detection. Among six stages of ripeness, the studies employing the four mentioned stages performed better in terms of accuracy and coefficient of determination value. Among all the works for detecting ripeness stages prediction, convolutional neural networks were found to perform sufficiently well with large datasets, whereas conventional artificial neural networks and support vector machines attained better performance for sensor-related data. However, insufficient information on the dataset and capturing device, limited data availability, and exploitation of data augmentation techniques are limitations in existing studies. Thus, effectively addressing these shortcomings and close collaboration with experts to predict the ripeness stages should be pursued.info:eu-repo/semantics/publishedVersio

    Graphical User Interface for the Development of Probabilistic Convolutional Neural Networks

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    Through the development of artificial intelligence, some capabilities of human beings have been replicated in computers. Among the developed models, convolutional neural networks stand out considerably because they make it possible for systems to have the inherent capabilities of humans, such as pattern recognition in images and signals. However, conventional methods are based on deterministic models, which cannot express the epistemic uncertainty of their predictions. The alternative consists of probabilistic models, although these are considerably more difficult to develop. To address the problems related to the development of probabilistic networks and the choice of network architecture, this article proposes the development of an application that allows the user to choose the desired architecture with the trained model for the given data. This application, named “Graphical User Interface for Probabilistic Neural Networks”, allows the user to develop or to use a standard convolutional neural network for the provided data, with networks already adapted to implement a probabilistic model. Contrary to the existing models for generic use, which are deterministic and already pre-trained on databases to be used in transfer learning, the approach followed in this work creates the network layer by layer, with training performed on the provided data, originating a specific model for the data in question.info:eu-repo/semantics/publishedVersio

    EPISTEMOLOGICAL FOUNDATIONS OF SOCIAL SCIENCE RESEARCH

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    Património da cana sacarina na Ilha da Madeira: propostas de roteiros

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    A presente dissertação visa apresentar roteiros pelo património da cana-de-açúcar na Ilha da Madeira. Traduz-se numa proposta de estratégia cultural que se cruza com a literatura e gastronomia. Inicia-se com a contextualização da cana-de-açúcar na região apresentando-se o seu ciclo de vida e o processo de produção bem como os derivados que se obtêm como o mel de cana e a aguardente, por exemplo. A cultura sacarina teve impacto na economia da região a qual deixou na Ilha da Madeira um património vasto patente nos engenhos, nos museus, etc., os quais são pontos a visitar nos roteiros apresentados. O papel dos engenhos bem como os produtores são fundamentais para que se possa manter viva a história do ouro branco. Temos presente o turismo cultural e literário na divulgação e promoção desta cultura aludindo aos eventos e tradições que se destacam no contexto da cana-de-açúcar. Assim, apresenta-se a cultura sacarina na identidade madeirense através do papel da Gestão Cultural.The present dissertation aims to present itineraries through the sugar cane heritage in Madeira Island. It translates into a proposal for a cultural strategy that intersects with literature and gastronomy. It begins with the context of sugarcane in the region, presenting its life cycle and production process as well as the derivatives obtained, such as sugarcane honey and brandy, for example. The sugar culture had an impact on the economy of the region, which left a vast heritage on Madeira Island, evident in the mills, museums, etc., which are points to visit in the presented itineraries. The role of the mills, as well as the producers, is fundamental for keeping the history of white gold alive. We are aware of cultural and literary tourism in the dissemination and promotion of this culture, alluding to the events and traditions that stand out in the context of sugarcane. Thus, the saccharine culture is presented in Madeiran identity through the role of Cultural Management

    Environmental Analysis of the Incorporation of Sugarcane Bagasse in Medium Density Particleboard Panels through Life Cycle Assessment

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    The growth of civil construction and agroindustry, resulting from population growth, caused an increase in the demand for non-renewable resources and for the exploitation of natural resources. Consequently, it caused a greater generation of waste, causing the current scenario to require alternatives for the reuse of these materials. Particleboard panels, for example, used in civil construction, can add value to waste or materials of low acceptance, such as thinning wood, mechanical wood processing waste or agro-industrial waste. Thus, this study proposed to analyse the life cycle of the sugarcane bagasse, considering the stages of extraction of materials and energy resources until their final disposal. This study aimed to compare impacts generated by the production of particleboards panels produced with wood from plantations (pine) and with the sugarcane bagasse. As a result, a better environmental performance was obtained from the panel composed of sugarcane bagasse, as it generated lower environmental impacts in all impact categories studied. The benefits range from the reduction in waste disposed of in landfills, which increase its useful life, the lower demand for reforestation, with steps that generate atmospheric emissions and degrade the soil.info:eu-repo/semantics/publishedVersio

    Revisão de projeto de edifício hospitalar, especialidade de hidráulica

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    Sendo o setor da construção civil um dos pilares do desenvolvimento económico nacional, torna-se fundamental ter uma melhor compreensão dos principais fatores que o cercam. Os dados mais atuais indicam que o cenário da construção civil em Portugal converge com a grande maioria dos países europeus. Enquanto os demais países apresentam um crescimento significativo no âmbito da reabilitação, o setor construtivo português vem apresentando um incremento notável na participação da reabilitação no cenário nacional. Apesar disso, algumas importantes obras de reabilitação estão sendo realizadas como forma de resgatar as características basilares da edificação, contudo, sem afetar de forma significativa o património da arquitetura portuguesa. Este é o caso do Centro de Saúde, o qual passou por um projeto de reabilitação em 2013 para assegurar um melhor funcionamento da unidade de saúde, entretanto, preservando diversas características que tornam aquela edificação única. O presente estudo teve como objetivo a análise das soluções adotadas para o sistema de abastecimento de água e sistema de drenagem de águas residuais e pluviais. Com o auxílio das legislações vigentes e de bibliografias externas, fez-se a verificação dos principais pontos considerados para o dimensionamento dos sistemas supracitados. No geral, o projeto realizado apresentou uma grande assertividade no que concerne a aplicação da normativa vigente e de metodologias não regulamentares, entretanto, consolidadas. Por fim, o objetivo do presente estudo foi efetuar a análise dos conceitos hidráulicos utilizados, propondo melhorias quando necessário. Contudo, os principais problemas encontrados referem-se à transparência de dados e parâmetros utilizados, os quais não foram suficientemente pormenorizados no memorial descritivo do respetivo projeto de reabilitação.Since the civil construction sector is one of the pillars of national economic development, it is essential to have a better understanding of the main factors that surrounding it. The most current data indicate that the civil construction scenario in Portugal converges with the vast majority of European countries. While the rest of the countries show significant growth in the field of rehabilitation, the Portuguese construction sector has shown a notable increment in the share of rehabilitation in the national scenario. Despite this, some important rehabilitation works are being carried out as a way to rescue the basic characteristics of the building, however, without significantly affecting the heritage of Portuguese architecture. This is the case of the Health Center, which underwent a rehabilitation project in 2013 to ensure better functioning of the health unit, however, preserving several characteristics that make that building unique. The present study had the objective of analyzing the solutions adopted for the water supply system and the wastewater and rainwater drainage system. With the aid of current legislation and bibliographies, the main points considered for the design of the aforementioned systems were verified. In general, the project carried out showed great assertiveness with regard to the application of current regulations and non-regulatory methodologies that were consolidated in the meantime. Finally, the objective of this study was to carry out the analysis of the hydraulic concepts used, proposing improvements when necessary. However, the main problems encountered refer to the transparency of the data and parameters used, which were not sufficiently detailed in the descriptive memorial of the respective rehabilitation project

    Implementation of a P2P NFTs protocol (ERC-721) designed to mitigate ticketing industry hitches

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    Os mercados secundários ilegais têm sido um incómodo de longa duração para a indústria da bil heteira. Os revendedores tendem a comprar agressivamente o maior número possível de bilhetes disponíveis, com o objectivo de os vender noutros locais por um lucro imenso. Após um esgota mento de bilhetes, os clientes interessados não têm outra escolha senão pagar a quantia exorbitante solicitada. Esta cadeia de eventos introduz um mercado injusto e desprotegido para os clientes em geral. Têm surgido propostas e implementações para diminuir esses efeitos, mas a solução perfeita ainda está para vir. Desenvolveu-se um protocolo sustentado pelo sistema Ethereum e que faz uso de NFTs com o objectivo de fornecer um sistema de bilheteira transparente, aberto, descentral izado, e honesto. Nesta tese incidiu-se fortemente na investigação em torno da segurança e técnicas de optimização para a escrita de smart-contracts. Além disso, nesta dissertação documentou-se detalhadamente o desenvolvimento, testes, e estratégias de validação utilizadas para a entrega do protocolo. Concluiu-se que embora o protocolo sirva notavelmente para o seu propósito, existe uma clara limitação, um mercado central autoritário. No entanto, acredita-se que o trabalho aqui implementado posssa servir de orientação para novos utilizadores destas tecnologias, ou servir de inspiração para ideias recém-nascidas baseadas em blokchain.Illegal secondary markets have been a long-lived hassle for the ticketing industry. Scalpers tend to aggressively buy out as many available tickets as possible with the goal to sell them elsewhere for an immense profit. Upon a sold-out, interested customers have no choice than to pay the exorbi tant amount asked. This event-chain introduces an unfair and unprotected market for the overall customers. Proposals and implementations to diminish those effects have been emerging, but the perfect solution is yet to come. We have developed a protocol underpinned by the Ethereum sys tem which makes use of NFTs with the goal of providing a transparent, open, decentralized and honest ticketing system. This thesis strongly focused on research regarding security and optimiza tion techniques for smart-contract coding. Moreover, this dissertation thoroughly documented the development, testing, and validation strategies used to deliver the protocol. We conclude that although the protocol notably serves its purpose, there is one clear limitation, a central authorita tive marketplace. Nevertheless, we believe the work herein implemented can serve as guidance to onboard new users to these technologies, or serve as inspiration for newborn blockchain ideas

    Relatório de estágio para obtenção do grau de mestre em Educação Pré-Escolar e Ensino do 1.º Ciclo do Ensino Básico

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    Este relatório é uma reflexão das minhas experiências, nas práticas pedagógicas no âmbito do Mestrado em Educação Pré-escolar e 1.º Ciclo do Ensino Básico. Neste sentido, procuro evidenciar e refletir sobre o trabalho que desenvolvi durante esse percurso sob a supervisão dos meus orientadores, na Escola Básica do 1.º Ciclo com Pré Escolar da Achada (numa sala de pré-escolar), na Escola Básica do 1º. Ciclo com Pré Escolar da Ladeira (numa turma de 4.º ano) e na Escola Básica Visconde Cacongo (numa turma de 2.º ano). Assim considero pertinente a existência de uma parte teórica e metodológica e uma parte reflexiva sobre a minha intervenção pedagógica. Neste sentido o presente relatório é constituído por três partes subdividida em capítulos. A primeira parte refere se ao enquadramento teórico e a segunda diz respeito ao enquadramento metodológico, ambas são os fundamentos, os alicerces da minha prática. Assim nestas duas partes, encontramos a fundamentação das minhas ações, bem como a metodologia utilizada durante toda a minha prática. Na terceira parte é explorada e refletida a minha intervenção pedagógica, tendo foco nas questões orientadoras: “De que forma as crianças da Sala dos Cristais podem promover a convivência democrática?” e “Como desenvolver a leitura e a escrita na turma do 2º. Ano A?”. Assim as temáticas mais exploradas na minha prática foram a convivência democrática e a importância da leitura e da escrita, sendo estabelecidas estratégias que foram implementadas nas atividades, de modo a atenuar as lacunas encontradas. Ainda nesta parte apresento os resultados obtidos e uma reflexão do que poderia ter sido feito para melhorar a minha prática. A realização deste relatório permitiu refletir e expor as estratégias adotadas, que possibilitaram desenvolver e motivar as crianças para as diversas aprendizagens. Também aprendi que a nossa vida é um processo paciente, confiante, afetuoso e permanente de aprendizagem.This report reflects my experiences in pedagogical practices in the scope of the master’s degree in Pre-school Education and Primary School. In this sense, I try to highlight and reflect on the work I did during this course under the supervision of my supervisors, in the Achada Primary School with Pre-School (in a pre-school room), in the Primary School with Pre-School of Ladeira (in a 4th grade class), and in the Primary School with Pre-School of Ladeira (in a 4th grade class). Ladeira Primary School and Pre-School (in a 4th grade class) and Visconde Cacongo Primary School (in a 2nd grade class). Thus, I consider pertinent the existence of a theoretical and methodological part and a reflective part about my pedagogical intervention. In this sense, this report consists of three parts subdivided into chapters. The first part refers to the theoretical framework and the second part refers to the methodological framework, both are the fundamentals, the foundations of my practice. Thus, in these two parts, we find the rationale for my actions, as well as the methodology used throughout my practice. In the third part my pedagogical intervention is explored and reflected upon, focusing on the guiding questions, "In what ways can the children in the Crystal Room promote democratic coexistence?" and "How to develop reading and writing in the class of 2nd. Year A?". Thus, the most explored themes in my practice were the democratic coexistence and the importance of reading and writing, being established strategies that were implemented in the activities, to mitigate the gaps found. Also, in this part I present the results obtained and a reflection on what could have been done to improve my practice. The completion of this report allowed me to reflect and expose the strategies adopted, which made it possible to develop and motivate the children for various learning experiences. I also learned that our life is a patient, confident, loving and permanent learning process

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