140 research outputs found

    A new concept of highly modular ASV for extremely shallow water applications

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    This paper describe SWAMP, a prototype Autonomous Surface Vehicle (ASV) representing the base for the design and development of an innovative class of reliable modular reconfigurable lightweight ASVs for extremely shallow water applications. The design of SWAMP-class ASVs is based on a holistic approach involving different aspects of robotics such as the use of soft materials, the mechanical design of innovative propulsion system integrated with the vessel hull, the adoption of modular mechanical and computing architecture able to support multi-agent distributed GNC systems

    Variation in the co-expression profile highlights a loss of miRNA-mRNA regulation in multiple cancer types

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    Recent research provides insight into the ability of miRNA to regulate various pathways in several cancer types. Despite their involvement in the regulation of the mRNA via targeting the 3'UTR, there are relatively few studies examining the changes in these regulatory mechanisms specific to single cancer types or shared between different cancer types.We analyzed samples where both miRNA and mRNA expression had been measured and performed a thorough correlation analysis on 7494 experimentally validated human miRNA-mRNA target-gene pairs in both healthy and tumoral samples.We show how more than 90% of these miRNA-mRNA interactions show a loss of regulation in the tumoral samples compared with their healthy counterparts.As expected, we found shared miRNA-mRNA dysregulated pairs among different tumors of the same tissue. However, anatomically different cancers also share multiple dysregulated interactions, suggesting that some cancer-related mechanisms are not tumor-specific. 2865 unique miRNA-mRNA pairs were identified across 13 cancer types, approximate to 40% of these pairs showed a loss of correlation in the tumoral samples in at least 2 out of the 13 analyzed cancers. Specifically, miR-200 family, miR-155 and miR-1 were identified, based on the computational analysis described below, as the miRNAs that potentially lose the highest number of interactions across different samples (only literature-based interactions were used for this analysis).Moreover, the miR-34a/ALDH2 and miR-9/MTHFD2 pairs show a switch in their correlation between healthy and tumor kidney samples suggesting a possible change in the regulation exerted by the miRNAs. Interestingly, the expression of these mRNAs is also associated with the overall survival. The disruption of miRNA regulation on its target, therefore, suggests the possible involvement of these pairs in cell malignant functions.The analysis reported here shows how the regulation of miRNA-mRNA interactions strongly differs between healthy and tumoral cells, based on the strong correlation variation between miRNA and its target that we obtained by analyzing the expression data of healthy and tumor tissue in highly reliable miRNA-target pairs. Finally, a go term enrichment analysis shows that the critical pairs identified are involved in cellular adhesion, proliferation, and migration

    Discutindo a educação ambiental no cotidiano escolar: desenvolvimento de projetos na escola formação inicial e continuada de professores

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    A presente pesquisa buscou discutir como a Educação Ambiental (EA) vem sendo trabalhada, no Ensino Fundamental e como os docentes desta escola compreendem e vem inserindo a EA no cotidiano escolar., em uma escola estadual do município de Tangará da Serra/MT, Brasil. Para tanto, realizou-se entrevistas com os professores que fazem parte de um projeto interdisciplinar de EA na escola pesquisada. Verificou-se que o projeto da escola não vem conseguindo alcançar os objetivos propostos por: desconhecimento do mesmo, pelos professores; formação deficiente dos professores, não entendimento da EA como processo de ensino-aprendizagem, falta de recursos didáticos, planejamento inadequado das atividades. A partir dessa constatação, procurou-se debater a impossibilidade de tratar do tema fora do trabalho interdisciplinar, bem como, e principalmente, a importância de um estudo mais aprofundado de EA, vinculando teoria e prática, tanto na formação docente, como em projetos escolares, a fim de fugir do tradicional vínculo “EA e ecologia, lixo e horta”.Facultad de Humanidades y Ciencias de la Educació

    stairs and fire

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    DIGITALIZZAZIONE DEI PROCESSI PRODUTTIVI IN AMBITO CARTARIO: PRIME APPLICAZIONI IN BARTOLI SPA.

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    Il mio percorso di tesi è stato svolto presso l’azienda Bartoli spa, cartiera nel comune di Capannori, facente parte del Distretto Cartario lucchese. Partendo dalla situazione in essere dell’azienda, il percorso di tesi si è poi concentrato sull’inserimento di nuovi applicativi digitali o sulla modifica di software già impiegati, per ampliare il volume dei dati storicizzati al fine di avere un miglior controllo del trend del maggior numero possibile di variabili coinvolte e dell’intero processo produttivo. Questo sistema di supervisione e monitoraggio in real time delle varie linee di produzione sarà un ausilio fondamentale per migliorare le performance del processo produttivo e per individuare le azioni aziendali più strategiche da compiere. The thesis was carried out at the company Bartoli spa, a paper mill in the municipality of Capannori and part of the “paper District” of Lucca..Starting from the current situation of the company, the thesis path was then focused on the inclusion of new digital applications or on the modification of software already used, to expand the volume of data stored in order to have a better control of the trend of the grateast possible number of variables involved and of the entire production process.This system of supervision and monitoring in real time of the various production lines will be a fundamental aid to improve the performance of the production process and to identify the most strategic business actions to be taken
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