217 research outputs found
Letture gramsciane di Giuseppe Lombardo Radice (II parte)
No full textIn Gramsci’s intellectual development is not a place on the periphery is occupied by the figure of Lombrado Root. Prominent character of pedagogy idealism and importer in Italy, activist of instances (even American), socialist “romantic, sentimental, unscientific.” Lombardo Radice was a careful student of the drama of the South and Gramsci was always very interested in the work of the Sicilian and there are many similarities (apparent) between the two intellectuals: 1) the focus on popular culture, 2) the combination between educational and political problems, and 3) the reference to the figure of Leonardo and other similarities yet. The author has done a thorough research work and significant
Radice: Data-driven Risk Analysis of Sustainable Cloud Infrastructure using Simulation
No full textCloud datacenters underpin our increasingly digital society, serving stakeholders across industry, government, and academia. These stakeholders have come to expect reliable operation and high quality of service, yet demand low cost, high scalability, and corporate (environmental) responsibility. Datacenter operators are confronted frequently with highly complex decisions that involve numerous aspects of risk. The consequence of bad decisions can be financial penalties or even loss of customers on the one hand, or a competitive disadvantage or unsustainable environmental impact on the other hand. Despite risk analysis being an integral part of the design and operation of cloud infrastructure, relatively few comprehensive approaches and tools exist, leaving many datacenter operators ill-equipped to make informed decisions with confidence.We propose Radice, an instrument for data-driven analysis of IT-related operational risks in sustainable cloud datacenters. Unlike most state-of-the-art approaches used by the industry, Radice automates the process of risk analysis in datacenters and utilizes the large and diverse volume of data reported by the monitoring systems in datacenters, including environmental data. Underpinning this system is the trace-based, discrete-event simulator OpenDC, which enables the exploration of many risk scenarios through its support for diverse workloads, datacenter topologies, and operational phenomena. Radice’s interactive and explorative user interface assists datacenter operators in addressing complex decisions involving risks, providing them with actionable insights, automated visualizations, and suggestions to reduce risk.We implement Radice and conduct a comprehensive evaluation of the system to demonstrate how it can aid datacenter operators when confronted with fundamental risk trade-offs. Although Radice is designed to work across many kinds of datacenters, in this work, we focus on private-cloud, business-critical workloads, and on public-cloud operations, representing the majority of workloads in Dutch datacenters. Our experiments show many interesting findings, supporting our claim for a need for data-driven risk analysis in datacenters. We highlight the increasing risk faced by datacenter operators due to price surges in the electricity and CO2 bond markets, and demonstrate how Radice can be used to control such risks. We further show that Radice can automatically optimize topology and operational settings in datacenters for risk, revealing configurations that reduce the overall risk by 10%–30%. Following extensive performance engineering, Radice is able to evaluate risk scenarios by a factor 70x–330x faster than others, opening possibilities for interactive risk exploration. We release Radice as free and open-source software for the community to inspect and re-use.Computer Scienc
Designing for Audience Participation within Museums: Operative Insights from the Exhibit Everyday History
No full textThis paper aims at exploring the shifting from the role of museums as provider of contents and designer of experience, to the role of facilitator of experiences around contents, as the emergence of new patterns for culture transmission opened to new possibilities for participatory approaches in the design of heritage experiences. Starting from the description of the participatory exhibit “Everyday History,” designed by the author at the Santa Cruz Museum of Art and History, CA, United States, as part of her doctoral research, this paper outlines methods and tools for the design of effective participatory experiences, capable of catalyzing visitor voices in supporting and contributing to cultural experiences. This approach has the goal to change the traditional top down way of communicating to the visitors, in favor of a multidirectional flow of information between the cultural institutions and the audience. Insights from this case study and literature highlight that designing for participation, in which community engagement is the final outcome of the design process, does not necessarily implies—but does not exclude—participatory design processes. The author proposes a design methodology led by institutional staff, in which visitors are involved in recursive evaluation phases, conceiving the exhibition itself as an ongoing and never-finished product
Polymetallic (Pb-Zn-Cu-Ag ± Au) vein-type deposits in brittle-ductile transtensional shear zones, Eastern Sierras Pampeanas (Argentina): Age constraints and significance for the Late Paleozoic tectonic evolution and metallogenesis
No full textThis paper discusses new structural, kinematic and geochronological data from polymetallic (Pb-Zn-Cu-Ag ± Au) vein-type deposits hosted in the metamorphic basement of the southern Sierras de Córdoba. A Carboniferous age was established for the hydrothermal event between ∼329 and 315 Ma (Late Mississippian-Early Pennsylvanian) by the K/Ar fine-fraction dating method of sericitic alteration related to metallic ore deposition in the Las Guindas and Oro districts. The obtained ages postdate the spatially associated Devonian magmatism and overlap the A-type Early Carboniferous magmatism defined for the Eastern Sierras Pampeanas. The presence of non-exhumed granitic bodies at shallow depths, possibly related to mineralization, is supported by available geophysical and field evidence. The strain fabric and 3-D kinematic analyses constitute first kinematic data for the Carboniferous basement of the Southern Sierras Pampeanas demonstrating that mineralization was controlled by NNW- and ENE-trending brittle-ductile transtensional shear zones that overprint the earlier high-strain deformation fabrics of the basement. Transtensional deformation has accommodated large amounts of strike-slip movements and subordinated extensional components. The calculated kinematic axes indicate a coherent kinematic pattern of the mineralized systems in the two studied districts, with a maximum extension direction oriented NNE- to NE and maximum shortening direction oriented WNW- to NW. This deformation regime, active during mineralization, point to a non-compressive setting at the Late Mississippian-Early Pennsylvanian boundary. In line with other regional evidence, we propose a distinctive Carboniferous deformational phase in the Eastern Sierras Pampeanas, dominated by transtension. This period would have occurred after the transition with the Devonian compressional/transpressional orogenic regime.Fil: Maffini, María Natalia. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Fisicoquímicas y Naturales. Departamento de Geología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; ArgentinaFil: Wemmer, Klaus. Universität Göttingen; AlemaniaFil: Radice, Stefania. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Fisicoquímicas y Naturales. Departamento de Geología; ArgentinaFil: Oriolo, Sebastián. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires; ArgentinaFil: D'eramo, Fernando Javier. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Fisicoquímicas y Naturales. Departamento de Geología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; ArgentinaFil: Coniglio, Jorge Enrique. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Fisicoquímicas y Naturales. Departamento de Geología; ArgentinaFil: Demartis, Manuel. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Fisicoquímicas y Naturales. Departamento de Geología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; ArgentinaFil: Pinotti, Lucio Pedro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Fisicoquímicas y Naturales. Departamento de Geología; Argentin
Diritto al giudice e habeas corpus penitenziario: l'insostenibilità delle presunzioni assolute sui percorsi individuali
No full textSOMMARIO: 1. L’esigenza di un nuovo pronunciamento sulle giustificazioni del meccanismo ostativo. – 2. Preclusioni, prove legali, presunzioni: alla radice del nucleo logico-giuridico dell’art. 4-bis. – 3. Le anomalie del sistema presuntivo e la sua incompatibilità costituzionale
Lactic acid production by Lactobacillus casei using a sequence of seasonally available fruit wastes as sustainable carbon sources
No full textIntroduction: Lactic acid (LA) production from fossil resources is unsustainable owing to their depletion and environmental concerns. Thus, this study aimed to optimize the production of LA by Lactobacillus casei in a cultured medium containing fruit wastes (FWs) from agro-industries and second cheese whey (SCW) from dairy production, supplemented with maize steep liquor (MSL, 10% v/v) as the nitrogen source.Methods: The FWs were selected based on seasonal availability [early summer (early ripening peach), full summer (melon), late summer (pear), and early autumn (apple)] and SCW as annual waste. Small-scale preliminary tests as well as controlled fermenter experiments were performed to demonstrate the potential of using various food wastes as substrates for LA fermentation, except for apple pomace.Results and discussion: A 5-cycle repeated batch fermentation was conducted to optimize waste utilization and production, resulting in a total of 180.56 g/L of LA with a volumetric productivity of 0.88 g/L∙h. Subsequently, mechanical filtration and enzymatic hydrolysis were attempted. The total amount of LA produced in the 5-cycle repeated batch process was 397.1 g/L over 288 h, achieving a volumetric productivity of 1.32 g/L∙h. These findings suggest a promising biorefinery process for low-cost LA production from agri-food wastes
Philo's Theology and Theory of Creation
No full textPhilo’s theology is expressed by a few basic concepts – such as Logos, the Powers, Pnuema and the Ideas – through which the relation between God and the world is explained. But the same relation is explained in the act of Creation, such as it is presented in the Bible. Philosophically speaking, this act fluctuates between an “ex nihilo” interpretation and a demiurgic one. According to the author, Philo’s notion of creation has a mixed nature: “ex nihilo” in the planning stage (the world of the Ideas reflects the first day of creation in the Genesis) and demiurgic in the executive stage. Therefore, is there another (material) principle next to God? Philo provides no conclusive answer, because in this case he is always under the influence of a Platonic vision, according to which matter and the evil connected with it are non-being and only the Ideas are true being
Critiques of Capitalism and Nationalism at the Venice Biennale
No full textFondazione Prada presenta il progetto “Monte di Pietà” ideato dall’artista Christoph Büchel nella sede di Venezia, il palazzo storico di Ca’ Corner della Regina. A partire dalla storia stratificata del palazzo settecentesco Ca’ Corner della Regina, sede del Monte di Pietà di Venezia dal 1834 al 1969 e dal 2011 spazio permanente della Fondazione, Christoph Büchel ha costruito una complessa rete di riferimenti spaziali, economici e culturali. “Monte di Pietà” è un’approfondita indagine del concetto di debito come radice della società umana e veicolo primario con cui è esercitato il potere politico e culturale. Storicamente un crocevia di commistioni e scambi commerciali e artistici, Venezia è il contesto ideale per esplorare le relazioni tra questi temi complessi e le profonde dinamiche della società contemporanea
Il rapporto incrinato tra legge e giudice nelle presunzioni assolute in materia di libertà
No full textL’art. 27 Cost. implica il ruolo centrale della giurisdizione, a sua volta scaturente dalla configurazione dei rapporti fra legge e giudice delineata dall'art. 13 comma 2 Cost. In forza di questa struttura portante, quando prende provvedimenti sulla libertà il giudice non può distaccarsi dai «casi e modi» previsti dalla legge, ma la legge non può a sua volta sostituirsi al giudice e decidere in sua vece prevedendo, come nel caso oggetto di scrutinio costituzionale, che il silenzio del condannato sia segno inconfutabile di persistente affiliazione a un sodalizio criminoso e negando in radice vagli concreti sulla scelta di non rendere dichiarazioni etero-accusatorie
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