1,721,191 research outputs found
Comportamiento mecánico de columnas de hormigón armado reforzadas con mortero reoplástico
Full text linkThe present research fits in the general thematic of the renovation of existing building with special attention to concrete structures.
A series of tests have been performed with the aim to define the best solution in strengthening a deteriorated structure with a rheoplastic mortar reinforcement.
Three types of possible structural reinforcing renovation on reinforced concrete pillars have been considered, with special attention to adhesion between materials with different chemical-physical and mechanical characteristics.
The crack patterns obtained on the specimens have been analyzed to demonstrate the relevance of an appropriate thickness of the reinforcement to obtain an effective mechanical behavior of the reinforced concrete element over time.La presente investigación se inscribe dentro de la temática general de la rehabilitación de edificios existentes, prestando especial atención a las estructuras de hormigón.
Se han realizado una serie de ensayos con el objetivo de definir la mejor solución para el refuerzo de una estructura deteriorada mediante la utilización de morteros reoplásticos.
Se han considerado tres posibles tipos de refuerzo estructural sobre los pilares de hormigón armado, prestando especial atención a la adherencia entre materiales con diferentes propiedades físico-químicas y a las características mecánicas de los mismos.
Se han analizado los patrones de grietas obtenidos en las probetas con el fin de demostrar la relevancia del espesor del refuerzo en la obtención de un comportamiento mecánico efectivo del hormigón armado a largo plazo
Soil degradation in Sardinia - Historical causes and current processes due to anthropogenic pressure
No full textFattori pedologici e antropici nell’erosione del suolo in un bacino idrografico della Sardegna centro-occidentale caratterizzato da intensa attività antropica
No full textProblemi, metodologie di studio e prospettive di recupero degli invasi del sistema del Flumendosa (Sardegna centro-meridionale)
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La Sicilia cattolica di fronte al problema dell'Unità d'Italia
No full textIl volume contiene gli Atti del convegno organizzato dalla Facoltà teologica di Sicilia e dalla Facoltà di Scienze Politiche dell'Università di Palermo. Il convegno, che ha riunito studiosi di entrambe le Facoltà e anche di altri atenei italiani, ha affrontato uno dei temi più complessi e controversi della storia politica, civile e religiosa del nostro Paese: il rapporto del cattolicesimo siciliano con patriottismo e identità nazionale e il ruolo che i cattolici hanno avuto nella costituzione dello Stato italian
Cryptocurrency ecosystems and social media environments: An empirical analysis through Hawkes’ models and natural language processing
Full text linkCopyright © 2021 The Author(s). We analyse, using a mixture of statistical models and natural language process techniques, what happened in social media from June 2019 onwards to understand the relationships between Cryptocurrencies’ prices and social media, focusing on the rise of the Bitcoin and Ethereum prices. In particular, we identify and model the relationship between the cryptocurrencies market price changes, and sentiment and topic discussion occurrences on social media, using Hawkes’ Model. We find that some topics occurrences and rise of sentiment in social media precedes certain types of price movements. Specifically, discussions concerning governments, trading, and Ethereum cryptocurrency as an exchange currency appear to negatively affect Bitcoin and Ethereum prices. Those concerning investments, appear to explain price rises, whilst discussions related to new decentralized realities and technological applications explain price falls. Finally, we validate our model using a real case study: the already famous case of ”Wallstreetbet and GameStop”1 that took place in January 2021.Funding: No funding was received for this work
Capturing Value from Local Contexts. The Decentralization of Decisions within Transnational Corporations
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