12 research outputs found

    The airification of cities: making sense of the impact of peer to peer short term letting on urban functions and economy

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    This paper explores spatial and economic dynamics arising from the diffusion of short termnletting across Italian cities. The study is based on a vast dataset comprising of all the properties listed on the AirBnB website in 14 cities, during the year 2015. We start by examining the relationship between airbnb´s offer and general tourist flows, and demonstrate a strong correlation between the two in all the cities considered, suggesting that airbnb accommodation is how a well established, integral component of the Italian tourist offer. The core objective of the study is to look into the role of short term letting within the general dynamics of urban capital valorisation, and gain insight on the possible evolution of the urban functions of historic centres. To this purpose we identified urban areas with the highest economic advantage of short-term letting versus traditional long-term residential letting. Our analysis suggests that landlords in the urban cores of art cities may already be moving properties from the residential market to short term letting in great numbers, contributing to the decade-old social desertification and disneyfication of Italian historic centres. This finding is also supported by the surprisingly high proportion of residential units in historic centres listed on airBnB and, among these, the overwhelming predominance of entire homes versus single and private rooms. Such observations also seem to contradict AirBnB Inc.´s narrative regarding the actors that mostly benefit from the platform - reportedly younger tenants struggling with high rents, and families making an extra income. Our results suggest that landlords may be those more interested in the opportunities afforded by the platform, rather than resident tenants. The article concludes with a focus on two cities, Florence and Milan, which display extremely different spatial patterns of short term letting supply and demand, and an interesting relationship between the distribution of airbnb clusters and urban phenomena of different nature, such as gentrification

    VGI AND WEB 2.0: POLITICS IN THE TIME OF TWITTER

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    Il presente contributo si articola in due parti che mirano a esplorare la rappresentazione del luogo attraverso informazioni georeferenziate generate dagli utenti. La prima parte, a carattere teorico e metodologico, analizza il contesto dell’informazione geografica e le recenti innovazioni della cartografia online, con particolare attenzione alla Volunteered Geographic Information (VGI). La seconda parte dello studio verte sul caso di studio: verrà infatti mostrato come le informazioni generate dall’utente possano essere utilizzate per analisi di carattere sociopolitico e come possano essere create mappe tematiche con strumenti di mappatura differenti. L’analisi prende in considerazione i tweet con geocode presenti su Twitter relativi ad alcune delle principali personalità politiche italiane al fine di mostrare una valutazione della popolarità e della percezione degli italiani nei confronti di alcune delle principali personalità politiche italiane attuali. L’articolo si conclude con una riflessione sulle potenzialità e i limiti, le opportunità e le difficoltà, delle nuove applicazioni Web 2.0 con l’intento di mostrare che il dato e l’informazione generati dall’utente possono svolgere un ruolo importante nella ricerca geografica e nella cartografia, per aiutare a comprendere meglio fenomeni, nel nostro caso politici, ma anche sociali ed economici.In this paper there are two main parts, which aim at exploring the representation of place through georeferenced user-generated information. The first part focuses on the main features of volunteered geographic information (VGI) and open source mapping tools. The second part of the paper develops a case study. It will be shown how user-generated information might be used for investigating a social and political topic and how thematic maps representing the analysis may be obtained with different mapping tools. That analysis has been developed using geocoded tweets from Twitter, concerning some of the most important Italian politicians. The paper closes with some remarks on the potentialities and the limits, the opportunities and the difficulties of the emerging Web 2.0 applications and it aims at showing that user-generated data and information can play an important role in geographical research and in mapping activities, to help to better understand political as well as social and economical phenomenon

    THE AIRIFICATION OF CITIES. MAKING SENSE OF THE IMPACT OF PEER TO PEER SHORT TERM LETTING ON URBAN FUNCTIONS AND ECONOMY

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    An in-depth look into the mechanics of short term rentals in Italy. The study is based on a vast dataset comprising of all the properties listed on the Airbnb website in 10 major cities in the years 2015, 2016 and 2017. We discuss the spatial patterns of Airbnb supply and demand within and between cities, we then hypothesize on the possible drivers of the Airbnb offer and suggest a possible way to assess whether Airbnb supply could be driven by an economic advantage of short-term over long term letting. We also discuss the way the benefits of this particular incarnation of the sharing economy are shared among participants. Finally, we conclude by presenting a possible alternative way of regulating Airbnb

    Primary cutaneous B-cell lymphoma and chronic leg ulcers in a patient with type 2 diabetes

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    The incidences of type 2 diabetes mellitus and many cancers are rapidly increasing worldwide. Diabetes is a strong risk factor for some cancers (including lymphomas) and is also associated with adverse cancer outcomes. After gastrointestinal tract, the skin is the second most frequent extranodal site involved by non-Hodgkin lymphomas and the cutaneous B-cell lymphomas (CBCLs) range from 25% to 30% of all primary cutaneous lymphomas. The primary cutaneous diffuse large B-cell lymphoma (PCDLBCL) is an aggressive lymphoma with a poor prognosis, representing roughly 20% of all primary CBCLs. Classically, the cutaneous manifestation of this lymphoma is a red or violaceous tumors arising on a leg. To date, despite the large body of evidence suggesting that diabetes is strongly associated with an increased risk of some cancers, very little information is available regarding a possible association between type 2 diabetes and primary cutaneous diffuse large B-cell lymphoma. In this report, we will present the case of a white adult patient with type 2 diabetes with chronic leg ulcers complicated by a primary cutaneous diffuse large B-cell lymphoma

    EXPERIENTIAL TOURISM AND CITY ATTRACTIVENESS IN TUSCANY

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    The article develops an anlysis of the attractivness of Tuscan municipalities trough Flickr photos uploaded on the pohto sharing website

    VGI E WEB 2.0: LA POLITICA AI TEMPI DI TWITTER = VGI AND WEB 2.0: POLITICS IN THE TIME OF TWITTER

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    Il presente contributo si articola in due parti che mirano a esplorare la rappresentazione del luogo attraverso informazioni georeferenziate generate dagli utenti. La prima parte, a carattere teorico e metodologico, analizza il contesto dell’informazione geografica e le recenti innovazioni della cartografia online, con particolare attenzione alla Volunteered Geographic Information (VGI). La seconda parte dello studio verte sul caso di studio: verrà infatti mostrato come le informazioni generate dall’utente possano essere utilizzate per analisi di carattere sociopolitico e come possano essere create mappe tematiche con strumenti di mappatura differenti. L’analisi prende in considerazione i tweet con geocode presenti su Twitter relativi ad alcune delle principali personalità politiche italiane al fine di mostrare una valutazione della popolarità e della percezione degli italiani nei confronti di alcune delle principali personalità politiche italiane attuali. L’articolo si conclude con una riflessione sulle potenzialità e i limiti, le opportunità e le difficoltà, delle nuove applicazioni Web 2.0 con l’intento di mostrare che il dato e l’informazione generati dall’utente possono svolgere un ruolo importante nella ricerca geografica e nella cartografia, per aiutare a comprendere meglio fenomeni, nel nostro caso politici, ma anche sociali ed economici.In this paper there are two main parts, which aim at exploring the representation of place through georeferenced user-generated information. The first part focuses on the main features of volunteered geographic information (VGI) and open source mapping tools. The second part of the paper develops a case study. It will be shown how user-generated information might be used for investigating a social and political topic and how thematic maps representing the analysis may be obtained with different mapping tools. That analysis has been developed using geocoded tweets from Twitter, concerning some of the most important Italian politicians. The paper closes with some remarks on the potentialities and the limits, the opportunities and the difficulties of the emerging Web 2.0 applications and it aims at showing that user-generated data and information can play an important role in geographical research and in mapping activities, to help to better understand political as well as social and economical phenomenon

    The airification of cities. Making sense of the impact of peer to peer short term letting on urban functions and economy

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    Book of proceedings: Annual AESOP Congress, Spaces of Dialog for Places of Dignity, Lisbon, 11-14th July, 2017The emerging sharing economy is an extremely interesting phenomenon in the context of major cities, impacting them on several dimensions, ranging from social to economic, from cultural to environmental. “The sharing economy is an emerging economic-technological phenomenon that is fueled by developments in information and communications technology (ICT), growing consumer awareness, proliferation of collaborative web communities as well as social commerce/sharing” (Botsman & Rogers, 2010), (Kaplan & Haenlein, 2010), (Wang & Zhang, 2012), (Hamari et al., 2015). The concept of sharing economy is very simple: it allows to rent out anything that is under-utilized or not used at all. The contact between supplier and customer is established through an online platform. Sharing economy platforms, in the last few years, have become very popular and changed our consumption patterns (Quattrone et al., 2016). On the one side, suppliers can short-term rent their goods (or services); on the other side, consumers can rent goods or services at a lower cost than a traditional provider (Zervas and Proserpio, 2014). Airbnb, a peer-to-peer accommodation website, is one of the most successful sharing economy platforms. Airbnb is a platform where people can offer for short term, discover and book houses all over the world, from a pc or smartphones and tablets. The company was founded in 2008 and by now (May 2017) it lists over 3 million properties in over 191 countries, over 65.000 cities, accommodating 150 millions of guests. Spaces rented on Airbnb vary from a couch in someone’s living room to an entire island (Wortham, 2011), but generally there are few typologies of accommodation: private or shared room and entire houses. The host may live in the property at the time of the rental or not. Airbnb claims that 57% of listings are entire apartments or homes, 41% are private rooms and 2% are shared rooms (Guttentag, 2015). Airbnb has been adopted on a massive scale worldwide and also in Italy: in 2015 the country had the third largest number of Airbnb listings in the world, with 83.000 hosts and 3.6 millions of visits per year, according to data published by Airbnb Italia. A press event in Rome (2016) saw the participation of the Italian minister of Culture who spoke with great enthusiasm of the affordances of the platform and the great benefits that it supposedly brings to urban economy. Nevertheless, in typical Italian fashion, there has been very little debate over the long term consequences of a relatively new phenomenon, especially one associated with novelty, enterpreneurialism and “new” technologies, and the only intervention that the government has deemed necessary has been that of imposing a tax on homes rented through the platform. However questions about the impact of an upsurge of short term rentals (‘STR’ onwards) over the delicate environment of Italian historical urban centres, as an example, have hardly been asked. Italians also seem to be ignoring the controversy that Airbnb’s fast rise has generated around the world, with accusations of driving up rents, depleting the residential housing market and, as is the case in Barcelona, turning entire neighbourhoods into 24h party zones, to the bewilderment of residents. Currently, in Florence and Venice just like in Barcelona, the risk to turn the historic centres into “cathedrals of consumption” where what had been grown naturally is replaced with a superficial and tourist-oriented veneer (Thani and Heenan, 2016) – is a very present one. The consequence of this process might be, at best, the loss of authenticity of such places (Zukin, 2009). In this context, the present contribution provides a more in-depth insight on the mechanics of Airbnb in Italy, focusing on two dimensions of the phenomenon, related to (1) the spatial distribution of STRs; (2) the economic impact of Airbnb on city centres and residential rents. After a brief recollection of the academic production on Airbnb (section 2), we describe our data and method of analysis (section 3); in Section 4 we present the spatial patterns of Airbnb supply and demand across 13 towns and cities in Italy, focusing on three archetypical patterns; we then hypothesize on the possible drivers of the Airbnb offer and suggest a possible way to assess whether Airbnb supply could be driven by an economic advantage of STR over long term letting (Section 5). In Section 6 we discuss the way the benefits of the sharing economy are… shared. Finally, we conclude by presenting a possible alternative way of regulating Airbnb.Published versio

    Tweeting Politicians: il peso della prossimità nella formazione e diffusione dell’opinione politica

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    L'innovazione in ambito tecnologico influenza i processi di formazione e diffusione delle idee e delle percezioni trascendendo lo spazio geografico e dando vita, attraverso il virtuale, a processi e dinamiche in grado di portare alla luce nuove forme prossimità. Social media come Twitter permettono agli utenti di generare e condividere informazioni raccogliendosi intorno a comunità di sentimento sempre meno definite territorialmente. Ciò nonostatnte questi fenomeni continuano ad essere legati alla realtà e ai suoi luoghi. Il contributo si pone tre obiettivi: comprendere il ruolo di Twitter come lente attraverso la quale analizzare le tendenze dell'opinione politica; il peso delle concentrazioni urbane ed il ruolo della prossimità, e di quale prossimità, nella costruzione dell'opinione politica

    Tweeting Politicians: il peso della prossimità nella formazione e diffusione dell’opinione politica

    No full text
    L'innovazione in ambito tecnologico influenza i processi di formazione e diffusione delle idee e delle percezioni trascendendo lo spazio geografico e dando vita, attraverso il virtuale, a processi e dinamiche in grado di portare alla luce nuove forme prossimità. Social media come Twitter permettono agli utenti di generare e condividere informazioni raccogliendosi intorno a comunità di sentimento sempre meno definite territorialmente. Ciò nonostatnte questi fenomeni continuano ad essere legati alla realtà e ai suoi luoghi. Il contributo si pone tre obiettivi: comprendere il ruolo di Twitter come lente attraverso la quale analizzare le tendenze dell'opinione politica; il peso delle concentrazioni urbane ed il ruolo della prossimità, e di quale prossimità, nella costruzione dell'opinione politica
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