808 research outputs found
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Strappi preventivi
No full textNel dopoguerra il museo diviene la principale istituzione culturale italiana sulla scorta dei modelli americani, e tra l’ansia della ricostruzione e il timore della guerra fredda, l’unica possibile conservazione dei cicli di affresco medievali e rinascimentali appare il loro distacco dalle pareti su cui erano nati. Si ricostruiscono analiticamente le posizioni teoriche, il dibattito e le tecniche operative dei restauratori coinvolti in quella che fu definita “la stagione degli stacchi”
Create value at the University: Financial and management problems in USOs
No full textThe aim of this work is to analyze the phenomenon of university spin-off (USOs).
The importance of this chance as a vehicle for the realization of university research results is underlined by the development that this kind of company have had in Italy in recent years.
The study is led both through literature and the analysis of a case.
The reported experience is the one of the USOs of Tuscia and allows to highlight how the beginning of a USOs is a complex process that often must overcome many obstacles as in management, in corporate governance and above all in financial, because of the difficulty in finding economical resources.
That’s why, the use of normal instruments of management control can make easier the start-up of these companies contributing to the creation of a clear organizational structure.
It also assumes the possibility of further development of these companies, thanks to their innovative and high technology and to investment founds through venture capital operations, especially in the start-up phase of the company
UN METODO PER LA QUANTIFICAZIONE SU BASI PARAMETRICHE DELL’INTENSITÀ DI DIRADAMENTO
No full textViene proposto un metodo per quantificare l’intensità di diradamento in popolamenti
coetanei. Il metodo (ICN) si basa sulla teoria di Assmann ed esprime l’intensità di
diradamento in termini di percentuale di area basimetrica da asportare. Secondo questo
metodo, l’area basimetrica massimale in un popolamento coetaneo può essere stimata in
funzione della sua altezza dominante. L’indice ICN è stato usato per quantificare l’intensità di diradamento in rimboschimenti di pino nero in Toscan
Flow Time estimation in ungauged basins
No full textThe aim of this work is to focalize the attention on the design flood estimation on small ungauged river basin of limited extension (<150 Km2).
In this contest we refer to the Width Function Based Instantaneous Unit Hydrograph (WFIUH) model, which optimizes, through the DEM, the distributed morphological basin information. The Width Function (WF) is defined as the distance-area function or the probability measure obtained by dividing the number of cells at given hydrologic distance from the outlet by the total number of basin cells (the distance is measured along the flow path and normalized by the maximum distance from the divide to the outlet). WF is easily obtained using common flow direction algorithms on elevation data, but in order to obtain the basin travel time distribution (IUH, or FT, Flow Time) two parameters have to be assigned: the channel and hillslope velocities (Vc, Vh).
Indeed these two values, rescaling the WF expressed in terms of length, provide the travel time of each cell of the basin.
The WFIUH model is not largely applied since these two velocity values have to be calibrated while this IUH approach should be adopted on small and almost ungauged basin. Further improvements can be obtained considering the spatial variability of hillslope velocities with the aim to reduce the number of parameter and to better determine the basin IUH. Overland flow
velocities are recognized to vary with slope length, flow depth, land use and other geomorphic hillslope characteristics. Several approaches for the variability velocity field estimation applied
for FT definition can be found in literature, for instance starting from classic Manning’s law and making assumptions on the hydraulic ratio, or linking hillslope velocity with power laws or local geomorphic properties such as slope or contributing area.
Although several studies have already focused on the relationships between WF, channel flow velocity and hillslope flow velocity, in literature it was not deeply investigated the spatial variability of overland flow velocity and how this variability affects the basin hydrologic response. So, after a brief review of the main methods, aim of this work will be:
A) to highlight if it is useful and what are differences in using a fully spatial distributed hillslope flow velocity field to rescale the FL, as respect to the standard approach which considers constant hillslope and river network velocity values.
B) to evaluate approaches useful for the flow velocity estimation in term of the capability to reproduce appropriate values and in term of the number and type of parameter introduced
La valutazione sperimentale dei consolidanti per il legno
No full textThe aim of this work has been to test some commercial products as consolidants of the structure of two wooden species: poplar (Populus sp.) and walnut (Juglans regia L.). The chosen products are acrylic, epoxy and aliphatic compounds available in commerce and often employed for other applications. The wooden samples have been prepared according to the UNI ISO instructions. The wood characteristic parameters have been measured: density, basic density, shrinkage, porosity, colour. The wooden samples have been artificial aged by means of frost/thaw cycles. The consolidants have been applied to the wood samples aged and not by means of under vacuum immersion. At the end the wood characteristic parameters and the FTIR spectra have been measured to evaluate the product effectiveness for the wood treatment
Retrodatazioni di nipponismi in italiano
No full textLa prima impressione di sporadicità e di recenziorità del contatto interlinguistico italo-giapponese corrisponde solo in parte alla realtà. Con l’eccezione del lessico delle arti marziali, infatti, e di alcune voci specifiche della gastronomia giapponese, lo spoglio delle fonti scritte con le relative retrodatazioni aiuta a disegnare un quadro del flusso di nipponismi in italiano più ricco di quanto non si potrebbe immaginare.
La prima importante constatazione è che esiste un manipolo nutrito di imprestiti attinenti alla cultura e alle istituzioni giapponesi che circolavano con una certa frequenza sin dal Cinque-Seicento. E anche in seguito la curiosità degli scienziati, degli uomini di lettere nei confronti del Giappone è immensa, onnivora e non può essere sottovalutata. I vari bollettini, annuari, riviste uscite a cavaliere tra XIX e XX secolo pullulano di pubblicazioni, articoli, narrazioni relative al mondo nipponico di cui si vuole esplorare e sapere tutto. Molte retrodatazioni dei nipponismi tardo-novecenteschi registrati dal GRADIT e da altre fonti precedenti sono una testimonianza precisa di tale circostanza
