7,213 research outputs found
Open Access 2012: achievements, further steps, and obstacles. An interview with Stevan Harnad
No full textOn the occasion of Open Access Week (22-28 October) I had a talk with Stevan Harnad, a pioneer and one of the world’s best-known Open Access advocates, author of the Subversive proposal (1994-1995) which triggered the whole movement. Professor Harnad highlights achievements, further steps, and obstacles ten years after the Open Access manifesto of the Budapest Open Access Initiative
ACER Ferrara 100. Per una storia della casa pubblica a Ferrara e provincia. Studi e documenti IACP 1920 / ACER 2020
No full textACER Ferrara 100 è un volume collettaneo che si concentra sull’operato dell’Ente (già IACP) in occasione delle celebrazioni per l’anniversario dei suoi cento anni. Perseguendo l’ottica trans-disciplinare degli “studi urbani”, che accosta alle discipline del progetto e agli studi storici lo sguardo delle scienze sociali, questo libro raccoglie contributi di urbanisti, architetti, storici, sociologi e fotografi, oltre che di dirigenti e quadri dell’edilizia pubblica, con il fine di tracciare un primo quadro di riferimento sul caso di studio ferrarese: il contesto urbano e demografico, l’evoluzione dell’Ente e il suo ruolo, gli interventi e i progetti urbani e architettonici più significativi, i progettisti di maggior spicco, l’evoluzione sociografica dell’inquilinato e le “voci” degli assegnatari. Non meno importanti, il corpo cartografico sull’evoluzione quantitativa e spaziale del patrimonio IACP/ACER e l’inserto fotografico sul patrimonio abitativo contemporaneo arricchiscono l’apparato grafico del libro. Come evocato dal titolo del volume, all’interno sono presentati primi sondaggi e studi su un terreno scarsamente frequentato per il caso di Ferrara e provincia. Infatti, l’assenza di ricerche storiche sullo IACP e, più in generale, sulla storia urbana
ferrarese, ha costretto a condurre indagini di prima mano, situazione ulteriormente esacerbata dalla condizione pandemica che ha caratterizzato l’anno del centenario,
complicando l’accesso ad archivi e biblioteche. Pertanto, i saggi e le ricerche qui raccolti apportano una grande ricchezza di informazioni, interpretazioni e ipotesi, che forniranno elementi per futuri approfondimenti, per una auspicabile sintesi sul ruolo dello IACP/ACER nella soluzione della profonda crisi degli alloggi novecentesca e, più in generale, nel determinare le forme dell’abitare popolare a Ferrara e provincia. Le esperienze del passato rappresentano possibilità di strutturazione del sociale che possono ispirare recuperi e innovazioni nell’intervento pubblico
Elena Romeo-Arroyo's Quick Files
No full textThe Quick Files feature was discontinued and it’s files were migrated into this Project on March 11, 2022. The file URL’s will still resolve properly, and the Quick Files logs are available in the Project’s Recent Activity
Elena Romeo-Arroyo's Quick Files
No full textThe Quick Files feature was discontinued and it’s files were migrated into this Project on March 11, 2022. The file URL’s will still resolve properly, and the Quick Files logs are available in the Project’s Recent Activity
Encuentros con Elena Poniatowska
No full textThe author analyzes testimonial literature from the perspective of female literature through his meeting with Elena Poniatowska. An analysis of reality vs. Fiction in Elena, Jesusa and Tinisima.El autor analiza, desde su encuentro con Elena Poniatowska, la vertiente de la literatura testimonial como literatura de mujeres. Un análisis interior de la relación entre realidad y ficción, entre Elena, Jesusa o Tinísima
Two-dimensional digital Image Correlation for Asphalt Mixture Characterisation: Interest and Limitations
No full textAs a practical and effective tool for quantitative in-plane deformation measurement of a planar surface, two-dimensional Digital Image Correlation (2D DIC) is now widely accepted and commonly used in the field of experimental mechanics. This paper presents an overview of the use of Digital Image Correlation (DIC)-based techniques for asphalt mixture characterization reported in literature. 2D DIC is well suited to analyze asphalt materials mechanical properties because of their anisotropic and heterogeneous nature. Fundamentals of DIC are first briefly described. Specific advantages of using these techniques in a context of asphalt material characterization are then highlighted. Critical issues that require further research and development are finally examined
Parametri Prestazionali Caratteristici del Comportamento a Frattura del Conglomerato Bituminoso
No full textMeasurement and Prediction of Fundamental Tensile Failure Limits of Hot Mix Asphalt (HMA)
No full textThe purpose of this research program is to provide an insight into key mechanisms and asphalt mixture properties that control fracture in asphalt materials.
A Digital Image Correlation (DIC) (non contact, full-field, surface displacement/strain measurement technique) was developed on purpose for accurately capturing localized or non-uniform stress distributions in asphalt mixtures and as a tool for detecting first fracture.
The experimental analysis of asphalt mixture cracking behavior was based on the “HMA Fracture Mechanics” visco-elastic crack growth law (Zhang et al. 2001; Roque et al.; 2002). Investigation of the asphalt cracking mechanism and identification of fundamental tensile failure limits were achieved performing multiple laboratory test configurations, namely the Superpave Indirect Tensile Test (IDT), the Semi-Circular Bending Test (SCB) and the Three Point Bending Beam Test (3PB). Both unmodified and polymer modified mixtures were tested.
The results presented herein illustrate that the DIC method could be used to reliably determine asphalt tensile failure limits at first fracture. It was found that these failure limits are independent of the specimen geometry and of the test configuration. Also, importantly the tensile failure limits were shown to be sensitive to both presence and level of polymer modification.
It is also shown that first fracture and crack growth in asphalt mixtures can be predicted effectively using a Displacement Discontinuity (DD) boundary element method, for various different boundary condition problems, and not just for the calibrated laboratory test conditions.
The numerical simulations and the DIC results presented show that significant damage, stress redistribution and other changes following initial fracture make the analysis at peak load difficult to interpret meaningfully. The effect of polymer modification on crack localization was also investigated through the use of horizontal full-field strain maps obtained from the DIC. It was found that polymer modified mixtures exhibit high strains only up to the location of impending fracture, while unmodified mixtures exhibit highly distributed damage in both the critical area and around the point of fracture
Circolazione di modelli epigrafici in area alpina tra I e VII secolo d.C.
No full textEsempi mirati di modelli epigrafici che hanno avuto circolazione in area alpina in età imperiale romana oppure fra tarda Antichità e alto Medioevo
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