1,721,566 research outputs found
The path toward smart cities: the approach of a local utility in Italy
Full text linkLa sostenibilità ambientale e il processo di urbanizzazione, rappresentano due grandi sfide per uno
sviluppo armonico delle città odierne. Il concetto di Smart City si configura come una strategia
volta a coniugare i fabbisogni del cittadino con l'evoluzione del contesto urbano caratterizzato
sempre più da una stretta interconnessione tra tecnologie dell'informazione, trasporto e produzione.
Il presente lavoro ha lo scopo di fornire un quadro sinottico dei vari elementi che compongono una
"Smart Grid", focalizzando la propria attenzione su tecnologie e possibili configurazioni da
impiegare per la conversione di una "Microgrid" in una "Smart Microgrid". Una volta descritto il
contesto generale che caratterizza le nuove "città intelligenti", la tesi sofferma la propria attenzione
su due dei possibili miglioramenti previsti per uno sviluppo armonico delle "Microgrid" nell'ambito
del contesto territoriale esaminato. Il primo studio riguarda lo sviluppo di un piano per la mobilità
sostenibile, condotto in collaborazione con la Multiutiliy Astea Spa (partner industriale del presente
dottorato di ricerca). Il progetto consiste in uno studio di fattibilità tecnico-economica, che prevede
l'installazione di diverse stazioni di ricarica a partire dall'anno 2014. La seconda parte della presente
tesi, riguarda i possibili sviluppi tecnologici della centrale di cogenerazione e teleriscaldamento
situata nella città di Osimo. Da una analisi tecnico-economica della centrale sono emersi alcuni
aspetti critici legati alla gestione e progettazione dell'impianto come: il sovradimensionamento della
turbina a gas, la riduzione del profitto marginale dovuto al profondo mutamento del contesto
energetico nazionale, la bassa densità degli utenti lungo la rete e l'assenza di sistemi di misura
meglio noti come "smart meters" per una gestione intelligente del calore. Sulla base di quanto
anzidetto, saranno analizzati alcune possibili interventi da applicare alla configurazione esistente, al
fine di migliorare l'efficienza del sistema e consentire una migliore gestione della richiesta di calore.Global urbanization trends and the idea of sustainability represent two major challenges for cities.
The concept of Smart City has been developed as a strategy to drive economic growth, improve
quality of life of people and enable cities to use technology, information and data to improve
infrastructure and services. This research thesis is organized to provide a synopsis of the various
elements which compose a smart grid, and it focuses especially on technologies and system
configurations that can be used for converting a Microgrid in a "Smart Microgrid". Once described
the context that characterizes the Smart Cities and the Microgrids, the thesis will concentrate on two
of the main improvements planned for a harmonious development of the Microgrid examined. The
first study concerns the development of a plan for sustainable mobility conducted in cooperation
with a local utility (industrial partner of the present Ph.D.). It was submitted to local municipalities
Osimo and Recanati, both located in Marche Region (Italy), in order to start a project that envisages
the installation of several charging stations starting from 2014. The second part of the study,
illustrates the possible technical developments of the CHP-District Heating located in Osimo Town.
On the basis of the experience reported by the local utility Astea, some critical aspects in its
management and design were put into evidence such as the over-sizing of the gas turbine of the
CHP unit, the reduction of the marginal profit due to the variation of the pattern condition in the
energy sector, low users density along the network and absence of "smart users energy meters".
Regarding the abovementioned aspects, some possible modifications of the existing plant
configuration will be analysed, in order to improve the system efficiency and manage the variable
heat demand during the year in a smart way
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
An experimental IR thermographic method for the evaluation of the heat transfer coefficient of liquid-cooled short pin fins arranged in line
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A free boundary problem arising from sorption of solvents in glassy polymers
No full textWe prove existence and uniqueness of the solution to a free boundary problem arising in the theory of sorption of solvents in a polymeric layer
La composizione degli stucchi a Genova tra Cinquecento e Novecento.
No full textThe “Genoa Old City Cultural Map”, made inside European Program "Life", referred at 2.344 building, and the analysis of many mortars coming from front of some of the most important building of the town, made for restoring, are the foundation of this article. The 13 % of about 5000 fronts exhibits, on one side at least, decorations like frames and plasters. They are buildings of the period between XVI and XIX century when were used mortars made of lime and sand, with the progressive substitution of magnesian lime with pure lime and the complete elimination of the chalk.
It's evident that there is a discordance between practic information from pre-industrial age, based of empiric methods, and technical information from post-industrial age, based of analytical observations
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
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