Search results for " INGEGNERIA"
showing 10 items of 796 documents
The role of fouling mechanisms in a submerged membrane bioreactor during the start-up
2006
How firm boundaries are drawn
2012
While many studies exist regarding the firm choice to make vs. buy, there has been little study about the choice between make, buy or ally. In this paper we investigate how firms choose among make, buy or make together when they have to organize a particular transaction. In particular we develop theory-based hypothesis that link the theoretical determinants of firm’s boundaries to the governance choice. In order to test such hypothesis we operationalize the main constructs in measurable variables and we collect information for that. The final sample represents 4316 mergers and acquisitions, alliances, and divestitures announced and completed by 88 of the first-ranked 100 members of the 2000…
Business networking strategy: operations management and organizational economics different perspectives
2008
Modelling and assessing public health policies to counteract Italian measles outbreaks
2021
This study aims to understand, through explanatory research, the key factors that led to the 2017 measles outbreak in Italy, the causes of the low level of immunisation and the causes of possible cyclical phenomena of measles epidemics. This topic's comprehension has required a holistic approach, merging epidemiological aspects, socioeconomic aspects (including the evolution of mistrust in vaccinations, infodemy and fake news) and health law constraints. A specific SIR System Dynamics (SD) model was built to reproduce the relevant cause-and-effect relationships between social interactions, the public institutions behaviour and the measles outbreaks. SD results permit the assessment of the h…
Assessing the Reduction Strategies of the Italian Measles Outbreaks through Dynamic Performance Management (DPM) approach
THE USE OF MBR SYSTEMS FOR THE TREATMENT OF REAL SHIPBOARD SLOPS: ANALYSIS OF BIOLOGICAL PERFORMANCE AND BIOMASS BIOKINETIC ACTIVITY
2016
In order to prevent hydrocarbon discharge at sea from ships, the International Maritime Organization (IMO) enacted the MARPOL 73/78 convention in which any oil and oil residue discharged in wastewater streams must contain less than 5 ppm hydrocarbons. Effective treatment of this petroleum-contaminated water is essential prior to its release into the environment, in order to prevent pollution problem for marine ecosystems as well as for human health. The present paper reports the first results of a field gathering campaign aimed at gaining insight about the treatment of real shipboard slops with a MBR pilot plant, in terms of pilot performance and biomass biokinetic activity. The achieved re…
A model for wastewater organic removal and fouling development in a SMBR pilot plant
2007
The paper presents the setting up of a mathematical model for membrane bioreactor able to simulate physical-biological wastewater organic removal. The model is basically divided into two sub-models: the first sub-model is basically devoted for the simulation of the biological features and the second one for the physical processes. In particular regarding the biological aspects, the ASM concept has been employed. On the other hand, the physical processes have been modelled considering the deep-bed theory taking into account not only the effect of the physical membrane filtration but also the cake layer effect. This latter operates as a biological membrane leading to a further reduction of th…
Caniglia Rispoli C., Signorelli A. (a cura di), (2008), La ricerca interdisciplinare tra antropologia urbana e urbanistica. Seminario sperimentale di…
2010
Piano, progetto e bellezza. Processi di trasformazione urbana della costa di Palermo
2020
Mai come adesso le grandi città italiane sembrano affette dalla mancanza ‘e/o dalla ricerca della loro bellezza. Città come Milano o Napoli alimentano, soprattutto in alcune loro parti, la diffusione di immagini del cambiamento culturale in corso. Roma, sia pur afflitta dalle criticità severe in materia di rifiuti e di manutenzione del bene pubblico, rimane ‘la città eterna’ che sa offrire la sua immensa dotazione di beni culturali anche senza alcuna organizzazione gestionale. Palermo (2016-2018) si trova nella condizione ottimale di capitale nazionale della cultura e di ospitare la Biennale nomade ‘Manifesta’ giunta alla dodicesima edizione. Il contributo cerca di mettere in evidenza le co…
INCIDENZA SULL’ANALISI DI RISCHIO DELLE MODALITÁ DI MISURA DEI SOIL GAS: IL CASO DI UN S.I.N. SICILIANO
2020
Il monitoraggio delle matrici aeriformi sta assumendo importanza crescente nell’ambito dei procedimenti di bonifica di siti contaminati, con riferimento sia all’esecuzione delle analisi di rischio, sia alla conseguente progettazione degli interventi di risanamento. L’utilizzo di misure dirette di campo si rivela di notevole interesse per la verifica di quelle indirette, ottenute con gli algoritmi implementati nei modelli matematici utilizzati per l’analisi di rischio. Obiettivo del lavoro presentato nella nota è stato quello di valutare l’influenza di misure dirette di soil gas e di flussi emissivi sull’analisi di rischio sanitaria. Come caso studio, si è considerato un S.I.N. nel territori…