1,720,978 research outputs found
Sustainable tourism and mobility development in natural protected areas: Evidence from Apulia
No full textThe natural protected areas of a territory represent an essential instrument of environmental policy and, if adequately exploited, a significant added value resource for European Regions. The evaluation of adopted policies and the economic planning of these areas require an integrated approach that considers several factors. In this article, through the construction of several indicators, we analysed three large protected areas of the Apulia Region (Italy). Using data collected from regional and national reports, we investigated the status and policies activated by these protected areas, focusing on different aspects: namely, transport services (including soft mobility and transport infrastructures), tourism and territorial economic development. This paper should be of interest for natural areas that in recent decades have been affected by considerable tourism expansion but that have recently launched sustainable development and transport policies. The proposed policies for the analysed areas can be adopted by parks or reserves with similar characteristics
Empirical investigation of retail fuel pricing: The impact of spatial interaction, competition and territorial factors
No full textThis paper explores the determinants of fuel prices by proposing an empirical framework that integrates three kinds of influencing factors: spatial interaction, competition and territorial factors. For competition, we define a general variable, the presence of competing stations within a radius, and two specific variables, the presence of low-cost stations and the presence of same-brand stations. We proceed with a step-wise adjustment of the radius, by gradually increasing it, to evaluate the spatial scope of different competition effects. Using data on prices of fuel stations in Rome, Italy, we estimate spatial econometric models that provide evidence of spatial dependence in price between stations. We also find that competition affects prices, but the relevance of its impact depends on radius length. Finally, the territorial factors remarkably influence prices. If these factors are introduced in the model, the magnitude of spatial parameters weakens, allowing to accurately assess the intensity of spatial dependence
Focus 1: Destinazioni al limite: un approccio multidimensionale per valutare e gestire il rischio di overtourism
No full textNel dibattito sul turismo contemporaneo, l’overtourism incarna il paradosso di un successo che si trasforma in minaccia: destinazioni celebri per la loro attrattività rischiano il collasso sotto il peso degli eccessivi flussi turistici. Da Venezia a Barcellona, da Kyoto ad altre mete iconiche, le località si sono trasformate in “trappole turistiche” caratterizzate da congestione urbana, sovraccarico infrastrutturale, speculazione immobiliare, perdita di identità e tensioni sociali. Non si tratta di episodi isolati né periferici: l’overtourism è una questione strutturale, alimentata da un modello economico che incentiva la crescita indiscriminata dei visitatori e richiede un’analisi sistemica, capace di integrare dati quantitativi e qualitativi e di coinvolgere tutti gli attori della filiera turistica
L'entomologia forense
No full textL’entomologia forense ha per anni studiato il ruolo degli insetti nei
processi di decadimento cadaverico contribuendo così in misura rilevante
alle stime sull’epoca di morte. La grande variabilità dei classici segni
post-mortali quali ipostasi, rigidità, raffreddamento cadaverico e putrefazione
ha portato a privilegiare l’uso del metodo entomologico in ambito
medico-legale in ragione della maggiore oggettività e ripetibilità dei tempi
di sviluppo degli insetti che per primi colonizzano la materia organica
in decomposizione. Le conoscenze acquisite nel tempo, tuttavia, hanno
permesso di verificare che lo studio degli insetti associati ad un cadavere
fornisce utili indicazioni non solo in ambito tanatocronologico ma anche
sui mezzi e sulla causa del decesso (v. entomotossicologia), risultando
talora dirimenti per il patologo forense in eventi di interesse tipicamente
medico-legale quali omicidi, intossicazioni, politraumatismi, depezzamenti,
abusi e maltrattamenti, etc. Una analisi approfondita e altamente specialistica degli insetti che partecipano ai processi di trasformazione
della materia organica consente altresì di verificare fatti circostanziali
o elementi investigativi correlati alle modalità delittuose dell’evento,
ai luoghi ove questo è stato perpetrato e all’eventuale sospetto autore del
reato contribuendo così, talvolta in maniera anche decisiva, alle indagini
di Polizia Giudiziaria.
Il presente capitolo illustra le basi scientifiche della disciplina entomologica
forense e i risvolti applicativi in ambito medico-legale, esaminando
vantaggi e svantaggi alla luce delle recenti acquisizioni sperimentali
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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