1,721,453 research outputs found

    INCLUDING ACTUAL EVAPOTRANSPIRATION FOR GREEN ROOF MODELLING AT AN EXPERIMENTAL

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    Green roofs are an effective tool to reduce the quantity of stormwater runoff in urban areas. The performance of a green roof (GR) in reducing runoff is indeed influenced by the climate and it ranges from 60% to 100% depending on the local environmental conditions as shown by several studies (Mobilia et all. 2015, Mentens et al., 2006, Teemusk & Mander, 2007). Modelling of evapotranspiration is strongly affected by the weather condition, too. Evapotranspiration may directly act on moisture content in the layer of the green roof so on its ability to retain water after rainfall events. For these reasons, in time, many authors have developed different models for prediction of the hydraulic behaviour of vegetated covers entailing the use of this term (Stovin et al., 2013,Locatelli et al., 2014, Poë et al., 2015). The aim of this study is to introduce a simple conceptual model based on soil water balance equations. Evapotranspiration represents an important term of the water balance, hence the need to consider the actual evapotranspiration (AET) because the potential one could lead to incorrect evaluation of the system efficiency. AET is calculated from potential evapotranspiration (PET) estimates using two models: API-model and AA-model. The proposed model is then calibrated and validated using measurement data collected from an extensive green roof site near Bernkastel-Kues (Germany). The goodness of Fit (GOF) of simulated runoff values to the set of observations is evaluated calculating three indices such as the root-mean-square errors (RMSEs), the averages of absolute percentage errors (AAPEs) and the relative percentage errors (RPEs)

    Vent’anni con i «Quaderni di Sociologia»

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    Antonio de Lillo entrò a far parte del Comitato editoriale dei «Quaderni di Sociologia» vent’anni fa, nel 1992. Si trattava di una nuova partenza per i «Quaderni», la cui nuova serie prendeva allora avvio con un cambio d’editore, una composizione del Comitato editoriale profondamente rinnovata, una radicale ristrutturazione dell’articolazione interna della rivista. Antonio condivise l’entusiasmo di quell’inizio. Antonio prendeva parte con regolarità alle riunioni del Comitato editoriale, alle..

    Una rifondazione dell'archeologia post-classica: la storia della cultura materiale / A refounding of post-classical archaeology: the history of material culture

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    "Il capitale culturale", per cortese concessione dell’Editore All’Insegna del Giglio, ripropone il testo di una discussione tratta dal vol. III (1976) di «Archeologia Medievale. Cultura materiale, insediamenti, territorio», pp. 7-29
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