1,140 research outputs found
La Carta della Qualità del nuovo PRG di Ivrea: Un manifesto per una vitale tutela dell'architettura moderna a Ivrea
No full textIl saggio ospitato in questo volume accompagna l'opera di catalogazione dell'intero patrimonio dell'architettura moderna di Ivrea, uno dei più straordinari al mondo, portando l'attenzione sui complessi abitativi e sulle grandi unità di produzione traguardi dal paesaggio canavese con cui queste architetture dialogano. In particolare documenta il lavoro di stesura della Carta per la qualità, strumento di gestione degli interventi sul patrimonio olivetano introdotto dal PRG2000 di Ivrea
Defining the length parameter in river bifurcation models: a theoretical approach
No full textOne-dimensional models for river bifurcations rely on a nodal point relation that determines the distribution of sediments between the downstream branches. The most widely-adopted nodal point relation describes the two-dimensional topographic effects exerted by the bifurcation by introducing two computational cells, located just upstream the bifurcation node, that laterally exchange water and sediments. The results of this approach strongly depend on a dimensionless parameter that represents the ratio between the cell length and the main channel width, whose value needs to be empirically estimated. Previous works proposed calibrating this parameter on the basis of more complete two-dimensional linear models, which directly solve the momentum and mass conservation equations. This study demonstrates that a full consistency between the one-dimensional approach and the two-dimensional models can be directly achieved by adopting different scaling for the bifurcation cell length, which results in a theoretically-defined and constant dimensionless length parameter. Comparison with experimental observations reveals that this physically-based scaling yields more accurate predictions of bifurcation stability and discharge asymmetry. This indicates that the proposed method may provide a more reliable and precise estimation of the cell length, potentially improving the performance of one-dimensional models for bifurcation processes in rivers
How children acquire adjectives: Evidence from three eye-tracking studies on Italian
No full textWhile the literature on early language acquisition has mainly focused on nouns and verbs, studies on adjectives are comparatively scarce and have thus far provided contrasting evidence on the timing and mode of acquisition of adjectival meaning in children younger than 4. This thesis presents three eye-tracking studies exploring the online processing of adjectives by children (2;4 – 5;3 years) in comparison to adult controls, providing insights on how linguistic information and visual context interact during real-time comprehension. Experiment 1 investigated potential differences in the interpretation of three classes of adjectives, intersective (e.g., red), relative (e.g., big) and absolute (e.g., full). 38 Italian monolingual children (2;4 – 5;3) were tested in a visual-world task, where they listened to noun-adjective combinations in a four-picture scenario. Results showed that children as young as 28 months were slower than adults when interpreting noun-adjective combinations, while their looking pattern in the interpretation process was essentially the same. Furthermore, the computation of intersective adjectives was faster than that of absolute and, especially, relative adjectives, showing that children are sensitive to the different ways in which each adjective class is interpreted within different contexts. In Experiment 2 the complexity of Experiment 1 was reduced by lowering the processing load associated with both the different semantic classes of adjectives and the four-picture scenario. 28 Italian-native children (2;4 – 5;2) were presented with a two-picture display while listening to nouns combined with color-adjectives. In Experiment 2, the visual conditions varied according to the informativeness of the noun or the adjective with respect to the target referent. Results showed evidence that adjective processing develops over time. When the computation of the noun was insufficient and the integration with the adjective was necessary to resolve reference, the youngest children, unlike 3- and 4-year-olds, failed to interpret adjectives correctly and, consequently, task resolution. Experiment 3 investigated children’s incremental processing of prenominal adjectives and their ability to predict the following noun based on the lexical meaning of the adjective. 39 Italian children (2;4 – 5;3) were tested in the online 3 interpretation of Italian predicative yes/no questions (e.g., È morbido il cuscino?, lit. ‘Is soft the pillow?’) while looking at two pictures on the screen. Here, the informativeness of the adjective was manipulated. Results showed that, when informative (e.g., soft, upon looking at a pillow and a bone), the adjective was processed incrementally, i.e., before the noun was heard, indicating that children as young as 28 months are able to predict the upcoming noun based on adjective meaning. Furthermore, children were successful independently of whether the interpretation of the adjective required world knowledge (e.g., being soft for a pillow) or the exploration of the visual scene (e.g., being open for a window). Taken together, the three studies provided compelling evidence of a continuous process in children’s development of sophisticated, adult-like processing skills. By means of eye-tracking, we were able to reveal that the overall difference between children and adults is mostly attributable to toddlers younger that 36 months of age, whose processing skills are still limited when it comes to the meaning computation of noun-adjective combinations. However, from the age of 3, children’s processing abilities improve rapidly and, within a few months, they become successful parsers
Free Alternate Bars in Rivers: Key Physical Mechanisms and Simple Formation Criterion
No full textFree alternate bars are large-scale, downstream-migrating bedforms characterized by an alternating sequence of three-dimensional depositional fronts and scour holes that frequently develop in rivers as the result of an intrinsic instability of the erodible bed. Theoretical models based on two-dimensional shallow water and Exner equations have been successfully employed to capture the bar instability phenomenon, and to estimate bar properties such as height, wavelength and migration rate. However, the mathematical complexity of the problem hampered the understanding of the key physical mechanisms that sustain bar formation. To fill this gap, we considered a simplified version of the equations, based on neglecting the deformation of the free surface, which allows us to: (a) provide the first complete explanation of the bar formation mechanism as the result of a simple bond between variations of the water weight and flow acceleration; (b) derive a simplified, physically based formula for predicting bar formation in a river reach, depending on channel width-to-depth ratio, Shields number and relative submergence. Comparison with an unprecedented large set of laboratory experiments reveals that our simplified formula appropriately predicts alternate bar formation in a wide range of conditions. Noteworthy, the hypothesis of negligible free surface effect also implies that bar formation is fully independent of the Froude number. We show that this intriguing property is intimately related to the three-dimensional nature of river bars, which allows for a gentle lateral deviation of the flow without significant deformation of the water surface
On steady alternate bars forced by a localized asymmetric drag distribution in erodible channels
No full textStudying the effect of different in-stream fluvial turbines siting on river morphodynamics allowed us to witness the onset of a time-Averaged, large-scale, alternate distortion of bed elevations, which could not be exclusively related to the turbine rotor blockage. The longitudinal profiles of this two-dimensional bathymetric perturbation resemble those of steady fluvial bars. In this contribution we generalize the problem addressing a spatially impulsive, asymmetric distribution of drag force in the channel cross-section. This is experimentally investigated through the deployment of differently sized grids perpendicular to the flow, and analytically explored as a finite perturbation of an open channel flow over an erodible sediment layer, as described by a coupled flow-sediment shallow water equation. The steady solutions of this fluvial morphodynamic problem, physically represented by alternate bars scaling with the channel width, highlight the importance of the resonant conditions in defining the spatial extent of the bed deformation. The equations further suggest that in very shallow flows any asymmetric obstruction may lead to an upstream propagation of the steady bars, consistent with previous studies on the effects of channel curvature. In broad terms, this study provides the preliminary framework to control the onset of river meandering through imposed finite perturbations of the cross-section. In a more applied sense, it provides a tool to predict non-local scour-deposition patterns associated with the deployment of energy converters or other flow obstructions
El diseño jurídico-institucional del procedimiento de certificación de eficiencia energética, como herramienta para la mitigación del cambio climático: especial referencia a la certificación de eficiencia energética edilicia
No full textFil: Redolfi, Ana Luz. Facultad de Ciencias Jurídicas y Sociales; Argentina
A. J. & J. A. Redolfi S.R.L
No full textEn el presente trabajo se desarrollará un diagnóstico de la empresa A. J. & J. A. Redolfi S.R.L. con el objetivo de realizar una planificación estratégica que ayude a mejorar el funcionamiento integral de las operaciones internas de la organización para la implementación de un nuevo canal de ventas online. En la industria de la distribución de productos alimenticios existe una elevada rivalidad entre empresas competidoras. Todas ellas constantemente están en búsqueda de diferenciarse por costos o rapidez de entrega. Esto implica que deben estar en mejora continua para mantener su posición en el mercado. Se han realizado los correspondientes análisis del sector y se ha estimado que la cuota de mercado de Redolfi es de aproximadamente el 4,23% en la provincia de Córdoba. La organización actualmente presenta una estrategia de diferenciación dirigida a ofrecer un servicio altamente orientado a la satisfacción del cliente. En el presente diagnóstico se ha implementado una estrategia de mercado como central, teniendo como objetivo la penetración del mismo y como estrategia funcional se utilizarán las de marketing y de investigación y desarrollo e innovación (I+D+i). Estas estrategias tienen como beneficios: poder brindar una mejor atención al cliente utilizando la omnicanalidad como puerta a la misma, aumentar la cartera de clientes que posee la empresa creciendo en la red de ventas y su alcance, y a su vez generar mayor fidelización de clientes, mejorar la imagen y posicionamiento en el mercado. Como objetivo general se busca aumentar la rentabilidad de Redolfi SRL en un 4% a partir del posicionamiento de la empresa en toda la provincia de Córdoba junto a la incursión en nuevos canales de venta online para el ejercicio 2022
Polysaccharide Layer-by-Layer Coating for Polyimide-Based Neural Interfaces
No full textImplantable flexible neural interfaces (IfNIs) are capable of directly modulating signals of the central and peripheral nervous system by stimulating or recording the action potential. Despite outstanding results in acute experiments on animals and humans, their long-term biocompatibility is hampered by the effects of foreign body reactions that worsen electrical performance and cause tissue damage. We report on the fabrication of a polysaccharide nanostructured thin film as a coating of polyimide (PI)-based IfNIs. The layer-by-layer technique was used to coat the PI surface due to its versatility and ease of manufacturing. Two different LbL deposition techniques were tested and compared: dip coating and spin coating. Morphological and physiochemical characterization showed the presence of a very smooth and nanostructured thin film coating on the PI surface that remarkably enhanced surface hydrophilicity with respect to the bare PI surface for both the deposition techniques. However, spin coating offered more control over the fabrication properties, with the possibility to tune the coating’s physiochemical and morphological properties. Overall, the proposed coating strategies allowed the deposition of a biocompatible nanostructured film onto the PI surface and could represent a valid tool to enhance long-term IfNI biocompatibility by improving tissue/electrode integration
Planificación Estratégica de Redolfi S.R.L
No full textEl presente trabajo final de graduación consiste en realizar una planificación estratégica de la empresa distribuidora Redolfi S.R.L la cual lleva adelante la distribución de alimentos, cigarrillos y artículos de limpieza. Se plantea para dicha empresa una estrategia corporativa de crecimiento para que la misma introduzca a su línea de productos existentes un producto nuevo para ofrecer a sus clientes actuales. Para llevar a cabo esto, se realizó previamente un análisis de situación dando a conocer la situación actual a nivel país, y expresando como afecta tanto de manera positiva como negativa a las empresas del rubro distribuidoras, y a continuación, se realiza un análisis interno de la empresa Redolfi S.R.L para de esta forma conocer sus fortalezas, oportunidades, debilidades y amenazas para poder llevar adelante la estrategia planteada. Pudiendo realizar los análisis correspondientes se llegó a la conclusión de que para que Redolfi S.R.L. siga creciendo dentro de su rubro es necesario incorporar a su cartera un nuevo y muy solicitado producto en la actualidad, que es el alcohol etílico, ya que, debido a la situación actual causada por el coronavirus es uno de los más vendidos y solicitados por todos los consumidores. A esto se le adicionará algunas medidas de fortalecimiento de ventas de sus empleados, y se buscará que la empresa incremente de manera escalonada sus ventas de productos ya existentes en cartera, para que de esta forma se logre con el proyecto incrementar la rentabilidad de la misma.DESTACAD
- …
