The use of FLAC for the seismic evaluation of a concrete gravity dam including dam-water-sediments-foundation rock interaction

Seismic safety of 65m-high Licodia Eubea gravity dam located in Southeastern Sicily (Italy) has been assessed by means of advanced dynamic analyses of the tallest cross-section of the dam. The analyses were performed with two-dimensional, plane strain, finite difference FLAC code, taking into consideration simultaneously the dam-water-sediments-foundation interaction. The analyses have been carried out for an earthquake scenario corresponding to the Collapse Limit State (CLS), using a set of seven natural accelerograms for the simulations (both vertical and horizontal components). The physical and mechanical parameters of the concrete and foundation rock were obtained from in situ and laboratory tests campaigns. A validation of the dynamic model in terms of fundamental mode vibration periods of the dam was carried out first. Then, linear analyses allowed to understand whether nonlinear analyses were necessary. From nonlinear analyses results, Licodia Eubea dam has been found to have an acceptable margin of safety for CLS. The implementation of nonlinearity at the dam-foundation interface reduced the tensile stress within the structure. The dam might experience limited sliding along its base, but its structural integrity would be preserved

Un modello geometrico delle mappe di orientazioni corticali

L’obiettivo di questa Tesi è quello di presentare un modello geometrico costruito sul gruppo SE(2) delle rototraslazioni come soluzione al problema della modellizzazione della corteccia visiva e, in particolare, della minimizzazione delle lunghezze delle connessioni neurali

Business plan: Apihug S.A. API Quality Assurance Service

APIHug es un producto SaaS que brinda herramientas online para asegurar la calidad, consistencia y soporte de operaciones en las APIs de empresas que corren sus servicios sobre Internet. Las herramientas de APIHug están orientadas al uso por parte de los equipos de Ingeniería de Software y Quality Assurance de las empresas tecnológicas

Strong ground motion characteristics of 2016 Central Italy earthquakes and implications for ground motion modeling

The 2016 Central Italy earthquake sequence produced three mainshocks: (1) M6.1 24 August, (2) M5.9 26 October, and (3) M6.5 30 October. Each mainshock was followed by many aftershocks, some of which with M > 5.0. All earthquake events occurred on southeast-northwest trending normal faults. As part of reconnaissance activities of these events performed by the Geotechnical Extreme Events Reconnaissance Association (GEER), ground motion data was processed and analyzed. After processing all data using procedures developed during the latest Next Generation Attenuation (NGA-West2) project, we analyze strong motion characteristics of all three mainshocks, two selected large aftershocks (M5.3 24 August and M4.8 26 August) and a foreshock (M5.4 26 October). Our analysis shows that stations near the hanging wall, exhibit fling-step in some cases but no obvious rupture directivity effects. We compare ground motion intensity measures (including peak ground acceleration and velocity, PGA and PGV, respectively) to Italy-specific and global ground motion models. Overall, the data exhibit fast attenuation at large distance (>100 km), which is captured by Italy-adjusted global models, but not by Italy-specific models. We also found that global models tend to over-predict ground motions at short periods. Both features were also observed from the 2009 L’Aquila earthquake data and may represent regional features. We estimate the spatial distribution of PGA for the three mainshocks by means of a Kriging analysis performed on within-event residuals using a global semi-variogram model. We found that the ground motion is most intense south-west of the Mt.Vettore - Mt.Bove normal fault. Given the importance of Italian normal fault earthquakes in worldwide ground motion databases, this data set is of global significance for studies of normal fault ground motions

Ruptura y Continuidad: Un Estudio en Torno a la Adscripción de Michel Foucault al Proyecto Kantiano.

El trabajo se propone desarrollar y evaluar la adscripción que realiza Michel Foucault, al final de su vida, al proyecto kantiano. Para ello, en primer lugar, desarrollaremos la filosofía de Kant, prestando especial atención a los puntos que, creemos, pueden servir para comprender la ruptura y continuidad entre ambos autores. Luego, nos concentraremos en la primera clase del curso El gobierno de sí y de los otros de Foucault, donde podremos dar cuenta tanto de los modos en que el autor comprendía su propia obra, como de la recepción que realiza de Kant y de la aufklärung. Finalmente, ampliaremos nuestros desarrollos con elementos del texto de 1984, “¿Qué es la ilustración?” con el objetivo de clarificar los modos en los cuáles los trabajos de Michel Foucault pueden comprenderse como insertos en la línea de Kant y la aufklärung

Das políticas da identidade a uma teoria crítica do parentesco. Uma genealogia argentina

--

The new ITACA monograph: main features and data compiling

The activities carried out within Task 2 aim to collect, organize and synthesize geological, geomorphological, geotechnical and geophysical data for the location site of the Accelerometric National Network (RAN) stations in Italy, managed by the Department of Civil Protection. Knowledge of geological and geomorphological context, and the mechanical and dynamic characteristics of the stations subsoil is an important factor for studies on the attenuation laws and the choice of accelerograms related to the subsoil category provided by seismic code. Having to produce on a large number of sites (over 600), this knowledge have to be rationalized and homogenized so as to arrive at a common and comparable level of information. With this goal has been organized and implemented the activities within Task 2

Precarización del trabajo y estrategias de trabajadoras en plataformas digitales: trabajo desde el hogar, organización sindical y disputa por derechos en el contexto de la pandemia del Covid-19

El presente artículo indaga en las condiciones de mujeres que se fueron insertando en trabajos más precarios, producto de la falta de respuestas en materia de políticas de corresponsabilidad de los cuidados. Estas trabajadoras buscaron respuestas en el trabajo remoto y en las plataformas de trabajo. La sobrecarga de trabajo doméstico y de cuidados no remunerados limita las posibilidades de inserción en empleos con jornadas laborales extradomésticas. De esta manera, la inserción de mujeres en plataformas de trabajo menos visibles – por no estar “en la calle” – es notoria porque habilita la combinación de tiempos y tareas – remuneradas y no remuneradas – en el hogar, pero, al mismo tiempo, las encasilla en sectores que les fueran socialmente asignados. Esta realidad requiere de nuevas estrategias políticas y sindicales a fin de darles visibilidad y representatividad en las organizaciones. Se materializa el riesgo de generar sindicatos sin la participación de las mujeres y sin una agenda de género. El artículo retoma las implicancias de un debate histórico que aún sigue vigente, y que se ha evidenciado en el contexto de la pandemia global, en torno a la llamada crisis de los cuidados. La pandemia del Covid-19 aceleró e hizo más vigente que nunca estos debates. Basado en un enfoque cualitativo, el presente estudio recurre a entrevistas semiestructuradas y al análisis documental para analizar las condiciones laborales de trabajadoras en plataformas digitales para el caso argentino. Asimismo, basado en una serie de talleres con trabajadoras sindicalizadas, plantea diversas estrategias para una agenda sindical y feminista, a fin de que no se diluyan la participación y derechos de las mujeres y personas LGBT+ a través de plataformas de trabajo que las aíslen en diversos empleos bajo la modalidad virtual y remota