Overtourism: A literature review to assess implications and future perspectives

Overtourism is an emerging concept facing the world's main tourist destinations. The growth that tourism has undergone in recent decades is of two different types. On the one hand, the development of new technologies and the creation of low-cost airline carriers have increased tourism levels, leading to growth even in emerging economies. On the other hand, uncontrolled demand alongside a concentration of tourism in particular destinations impact negatively both territories and local communities. The problems caused in some destinations by the increasing, ongoing growth in tourism have created the issue of "overtourism," which is assuming an increasing significance in the literature. This paper contributes to the literature by providing an exploratory study with which to better understand the origins of overtourism, its implications, and predicted future perspectives in respect to the issue. Examination of the new evidence presented here contributes to the expanding knowledge of particular problems of tourism development

Revealing large-scale homogeneity and trace impurity sensitivity of GaAs nanoscale membranes

III-V nanostructures have the potential to revolutionize optoelectronics and energy harvesting. For this to become a reality, critical issues such as reproducibility and sensitivity to defects should be resolved. By discussing the optical properties of MBE grown GaAs nanomembranes we highlight several features that bring them closer to large scale applications. Uncapped membranes exhibit a very high optical quality, expressed by extremely narrow neutral exciton emission, allowing the resolution of the more complex excitonic structure for the first time. Capping of the membranes with an AlGaAs shell results in a strong increase of emission intensity but also to a shift and broadening of the exciton peak. This is attributed to the existence of impurities in the shell, beyond MBE-grade quality, showing the high sensitivity of these structures to the presence of impurities. Finally, emission properties are identical at the sub-micron and sub-millimeter scale, demonstrating the potential of these structures for large scale applications.Comment: just accepted in Nano Letters, http://pubs.acs.org/doi/abs/10.1021/acs.nanolett.7b0025

T.E.A. Study: three-day ertapenem versus three-day Ampicillin-Sulbactam.

Background: Intra-abdominal infections are one of the most common infections encountered by a general surgeon. However, despite this prevalence, standardized guidelines outlining the proper use of antibiotic therapy are poorly defined due to a lack of clinical trials investigating the ideal duration of antibiotic treatment. The aim of this study is to compare the efficacy and safety of a three-day treatment regimen of Ampicillin-Sulbactam to that of a three-day regimen of Ertapenem in patients with localized peritonitis ranging from mild to moderate severity. Methods: This study is a prospective, multi-center, randomized investigation performed in the Department of General, Emergency, and Transplant Surgery of St. Orsola-Malpighi University Hospital in Bologna, Italy. Discrete data were analyzed using the Chi-squared and Fisher exact tests. Differences between the two study groups were considered statistically significant for p-values less than 0.05. Results: 71 patients were treated with Ertapenem and 71 patients were treated with Ampicillin-Sulbactam. The two groups were comparable in terms of age and gender as well as the site of abdominal infection. Post-operative infection was identified in 12 patients: 10 with wound infections and 2 with intra-abdominal infections. In the Ertapenem group, 69 of the 71 patients (97%) were treated successfully, while the therapy failed in 2 cases (3%). Therapy failures were more frequent in the Unasyn group, amounting to 10 of 71 cases (p = 0.03). Conclusion: According to these preliminary findings, the authors conclude that a three-day Ertapenem treatment regimen is the most effective antibiotic therapy for patients with localized intra-abdominal infections ranging from mild to moderate severity

Assessing the positional accuracy of perceptual landscape data: A study from Friuli Venezia Giulia, Italy

Online GIS-based applications that combine mapping and public participation to collect citizens' voices on their surrounding environment are a way to collect original spatial data that do not already figure in authoritative data sets. However, these applications, relying on non-expert users, might produce spatial data of insufficient quality for the purpose for which they are collected. This article presents an approach for assessing the positional accuracy of vague landscape features, using the results from a map-based survey completed by a group of volunteers in the Friuli Venezia Giulia region of Italy. The spatial section of the survey, gathering both georeferenced data and textual information on the mapping activity, allows the assessment of whether there is a correspondence between the mapped features and the intended map locations. The findings reveal a greater accuracy among participants in completing the mapping activity relating to degraded sites than to those of beauty

Emergenza rifiuti: ipotesi di risposte col supporto dei Sistemi Informativi Territoriali

Politica gestionale di rifiuti attraverso l'applicazione dei sistemi informativi territoriali

Glossario Internazionale di Valutazione Aziendale adottato nella realtà Nordamericana. Una traduzione ragionata

Lavoro teso ad avviare una serie di approfondimenti sulla necessità di un glossario italiano condiviso in tema di valutazione aziendal