Search results for " Ingegneri"
showing 10 items of 809 documents
A framework for public purchasing under a decentralized organization: an empirical study in the healthcare sector in Italy
2009
More and more public companies are showing interest in how no conventional purchasing strategies, such as purchasing group solutions, may improve efficiency in purchasing activities by providing consistent saving on public organization budgets. This issue is essential for the healthcare sector, whose public spending is still increasing and represents a significant part of the GNP of many European countries. In this paper, different purchasing strategies have been addressed; more specifically, the main objective is to formalize a framework supporting purchasing strategy formulation, and operazionalize it through an empirical application to the Sicilian Region healthcare industry.
La sharing mobility è un approccio alla mobilità sostenibile dal punto di vista dell’impatto ambientale? Alcune considerazioni basate su un’analisi e…
2020
L'influenza della sharing mobility sulla sostenibilità ambientale non è stata ancora pienamente compresa. Da un lato la sharing mobility consente ai consumatori di assumere comportamenti che portano ad una riduzione delle emissioni di CO2 grazie, per esempio, alla minore produzione di automobili (riduzione dell’acquisto di auto) e alla riduzione dei chilometri percorsi dalle auto (condivisione della corsa e maggiore tasso di occupanti per veicolo). D'altra parte, l'implementazione della sharing mobility porta ad effettuare un numero maggiore di viaggi in automobile. Infatti, un certo numero di chilometri che vengono percorsi oggi dalle auto condivise, erano percorsi prima con mezzi di trasp…
The Impact Of Demand And Inventory Management Policies On Bullwhip Effect In Production Networks
2004
The bullwhip effect is a phenomenon consisting in variance amplification of orders as they move up a supply chain. The immediate bullwhip effect consequences are the increase of inventory costs, poor custoiner services and inefficient utilization of resources due to the difficulties of production planning activities in highly variable conditions. There are many factors that cause the bullwhip effect, but if is particularly due to demand forecasting and inventory management policies. In this paper the impact on bullwhip effect of different policies to manage demand and inventories has been evaluated through discrete event simulation, using the ARENA (R) simulation package.
Social sustainability practices and operations management: an empirical study of Italian equestrian centres
2016
Although implementing social sustainability practices surely affects the operations and supply chain management of the company very few researches in the field of OM and SCM have been dedicated to this topic. Grounding on the literature on social sustainability and looking at the context of equestrian centres, where activities related to Therapeutic Horseback Riding (THR) and other social sustainable practices are very common, this paper offers a number of theoretical argumentations and empirical analysis about how being social sustainability oriented (or just adopting one or few social sustainability practices) may affect the operations of a company and, in turn, influence firm’s performan…
Sharing Economy: A Business Perspective
2020
The developments in information technology on the one hand, and the reduced purchasing power of many people due to the global crisis as well as the increasing sustainability concerns on the other hand, have contributed in recent years to the creation of a multitude of Internet-enabled peer-to-peer platforms and the consequent rise of a new paradigm of economy, namely the sharing economy. Under this paradigm, consumers on a massive scale share and make use of underutilized resources upon payment. In this chapter, we present an overview of the sharing economy phenomenon from a business perspective by identifying the major factors guiding its emergence and growth, by presenting some important …
Gli ingegneri camerali in Sicilia dopo il terremoto del 1823
2016
La memoria intende indagare, attraverso lo studio delle fonti bibliografiche e soprattutto di una copiosa documentazione archivistica, il ruolo determinante svolto dalle istituzioni attraverso l’attività degli ingegneri camerali, tecnici alle dirette dipendenze dell’amministrazione regia, tra i quali emergono alcuni tra i professionisti più attivi del tempo quali Luigi Speranza, Giuseppe Patti e Alessandro Emmanuele Marvuglia. Questi ultimi vennero incaricati di effettuare numerosi sopralluoghi nelle zone colpite dal terremoto al fine di valutare e monitorare i danni, redigendo sia quadri di carattere generale relativi ai singoli centri, che perizie di dettaglio volte all’accertamento dei d…
A plant-wide wastewater treatment plant model for carbon and energy footprint: Model application and scenario analysis
2019
Abstract A new model for accounting carbon and energy footprint of wastewater treatment plants (WWTPs) is proposed. The model quantifies direct and indirect greenhouse gas (GHG) emissions related to biological and physical processes of a WWTP. The model takes into account several innovative aspects with respect to already available literature models: i. kinetic/mass-balances; ii. nitrification as a two-step process; iii. nitrous oxide (N2O) formation during nitrification and denitrification both in dissolved and off-gas forms. A full-scale application has been performed by adopting the case study of a real WWTP. A scenario analysis was performed to quantify the influence of: composition of …
River water quality modelling: a parsimonious model approach
2009
Selective aqueous oxidation of aromatic alcohols under solar light in the presence of TiO2 modified with different metal species
2022
AbstractA set of metals modified TiO2 photocatalysts were prepared starting from titanium tetraisopropoxyde and different metal precursors to study the influence of the addition of the various foreign agents on the physico-chemical and photocatalytic properties of the catalysts. The powders were characterized by X-ray diffraction, Raman spectroscopy, specific surface area measurements, scanning electron microscopy, energy dispersive X-ray spectroscopy, UV–Vis diffuse reflectance spectroscopy, photoluminescence, temperature programmed desorption after CO2 adsorption. The photocatalytic activity was evaluated using as probe reactions the partial oxidation of three aromatic alcohols: benzyl al…