1,721,136 research outputs found
Trasporto merci, logistica e distribuzione modale. I presupposti economici del riequilibrio modale.
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Mobile Autonomous System for Measuring Pollutants in Indoor Environments
No full textThe panorama of air quality monitoring is constantly evolving, and its importance has become increasingly fundamental even in indoor environments. Recent studies show the impact of indoor air pollutants on human health. Since individuals spend a substantial part of their lives indoors, more and more attention is paid to guaranteeing the safety and purity of indoor air to safeguard health both at home and in the workplace. In this work, the design and development of an autonomous mobile measurement system dedicated to the sampling and analysis of indoor air quality in closed environments is presented. The system consists of a rover and several sensor technologies to provide a comprehensive assessment of air quality. The system moves autonomously in the closed environment, monitoring pollutants and transmitting data via wi-fi connection to the cloud for analysis and identification of possible dangerous situations. The preliminary tests carried out include the evaluation of various pollution scenarios, such as the presence of smoke, exhaust gases, chemical pollutants, and gas leaks. Furthermore, the autonomous mobile measurement system has been validated during about 12 hours in a real indoor environment. The presented work also offers a critical analysis and interpretation of these results, illustrating the practical implications and effectiveness of the proposed system in real contexts
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
l rapporto fra vettori ed aeroporti: analisi e valutazione del sistema di regolazione in Italia
No full textIl lavoro esamina l’evoluzione del sistema di regolazione del rapporto fra vettori aerei e società
aeroportuali in Italia ponendo l’attenzione su tre aspetti. Primo, si fornisce una breve descrizione della
normativa vigente e della nuova normativa relativa ai “requisiti di sistema”. Secondo, si riassumono
alcune indicazioni relative all’andamento storico dei diritti aeroportuali in Italia. Infine, si discute il
recente dibattito internazionale sulla regolazione mostrando le specificità del caso italiano e
commentando l’evoluzione degli scenari di breve e di medio periodo
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