1,721,079 research outputs found
Bike Usage in Public Bike-Sharing: An Analysis of the “BikeMi” System in Milan
Full text linkThe constant increase of public shared bicycle systems (PSBSs) in western cities suggests that nowadays city councils consider public bike sharing systems a serious alternative to traditional public transportation in urban areas. PSBSs can represent a solution in the hands of citizens for short journeys in highly urbanized areas. In this paper we focus on the successful example of Milan’s BikeMi PSBS which is giving very positive results in terms of satisfaction for all the actors involved, i.e. the service management, city council and users. From the available data it can be inferred that the bicycle overcome the car central areas in terms of speed, distance travelled daily, and choice of multiple itineraries, especially during peak periods and in proximity of the main railway stations. The main bicycle tracks and hotspots are also detected revealing an imbalance between the northern and the southern part of the city, with the northern part better covered by the service
The shared bicycle scheme in Milan : a report on the development of a successful public transport system
No full textIn the last years, the number of public shared bicycle systems (PSBSs) in big cities has steadily increased all over the world. City councils now consider bike sharing a valid transport policy option for regulating the urban traffic flow. For a country like Italy with
chronic urban development flaws, PSBSs can represent a solution in the hands of citizens for short journeys in highly urbanized areas. In this paper we focus on the successful example of
Milan’s BikeMi PSBS which is giving positive results in terms of satisfaction to the service
management, the city council and the citizens. Data concerning 4.1 million bike trips from 2009 to 2012 are analysed. From this analysis it can be inferred that for an average commuter
the bicycle is now a valid alternative to the car in terms of speed, distance travelled daily, and itinerary choice, especially during peak periods and in proximity of the city centre and the
main railway stations. The main bicycle tracks and hotspots are also detected revealing an imbalance between the northern and the southern part of the city, with the northern part more
covered by the servic
Il bike sharing di Milano : rapporto sullo sviluppo di un nuovo sistema di trasporto pubblico di successo
Full text linkIl costante incremento del numero dei sistemi di bike-sharing pubblici adottati nelle maggiori città del mondo occidentale negli ultimi venti anni suggerisce che esso costituisce ormai una valida alternativa ai sistemi di trasporto tradizionali pubblici nelle aree urbane. Pur con qualche eccezione, essi hanno avuto in genere una buona ricezione tra i cittadini. Per un paese come l’Italia, con ingenti flussi di traffico urbano che si snodano nella maggior parte delle città entro reti stradali urbane spesso risalenti al medioevo o al Rinascimento, i sistemi pubblici di bike-sharing possono rappresentare un’ottima soluzione a disposizione dei cittadini per i loro tragitti. Questo studio si propone di presentare l’esempio di successo del bike-sharing “BikeMi” di Milano, per il quale sono stati riscontrati risultati significativi in termini di gradimento da parte dei cittadini che usufruiscono del servizio, dell’amministrazione comunale che lo fornisce e delle aziende private che ne gestiscono l’organizzazione. I dati analizzati sono relativi a tutti gli utilizzi delle biciclette rilevati durante i primi 5 anni di funzionamento del servizio. Per l’utente medio la bicicletta di BikeMi costituisce un vantaggio rispetto all’automobile sia in termini di velocità e di facilità di accesso nelle zone a traffico limitato o pedonali, sia per la maggiore distanza totale percorsa quotidianamente. Ulteriori vantaggi per l’utente sono il minor costo di spostamento e la maggiore disponibilità di percorsi alternativi anche durante gli orari di punta del traffico cittadino coincidenti con gli orari di inizio e fine delle attività lavorative. I maggiori snodi di traffico delle biciclette di BikeMi sono risultati quelli in cui è presente una stazione ferroviaria. Inoltre dai risultati si può notare una certa discrepanza di utilizzo del servizio tra la zona nord e la zona sud del centro a svantaggio della zona sud
Are they telling the truth? Revealing hidden traits of satisfaction with a public bike sharing service
Full text linkPublic bike-sharing systems are an emerging mode of transportation introduced by municipalities to solve congestion problems in metropolitan areas, especially when integrated with other types of transportation. In the last years, the number of public bike sharing services is constantly on the rise all over the world, and generally the overall satisfaction with them is high. However, satisfaction with public services is driven by mechanisms that can differ from those in the private sector. It is important to establish to what extent a high satisfaction is genuine or simply ephemeral. Even “old” public services (like public transportation) become “gold” when accompanied by the introduction of new technologies. In this paper we analyse this phenomenon using data from a satisfaction web-survey conducted among customers of the public bike sharing system ’BikeMi’ in Milan, Italy, in a period when mobile technologies have been introduced to speed up the service. On simply analysing the responses to satisfaction questions, satisfaction resulted very high. However, our aim was to look for potential ’darker’ sides of the service by detecting possible hidden satisfaction components. To this purpose, we used the Nonlinear Principal Components Analysis, which is particularly powerful in this sense. A simple textual analysis was also performed as a validating test.
Results from our analysis indicated that satisfaction is flawed by a set of factors like the mechanics of the bikes, the picking and dropping system, and the apps used to organize the service. Less concern was detected for more general aspects of the service
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
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
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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