Search results for "ROUTE"
showing 10 items of 196 documents
A genetic algorithm for the design of a fuzzy controller for active queue management
2003
Active queue management (AQM) policies are those\ud policies of router queue management that allow for the detection of network congestion, the notification of such occurrences to the\ud hosts on the network borders, and the adoption of a suitable control\ud policy. This paper proposes the adoption of a fuzzy proportional\ud integral (FPI) controller as an active queue manager for Internet\ud routers. The analytical design of the proposed FPI controller is\ud carried out in analogy with a proportional integral (PI) controller,\ud which recently has been proposed for AQM. A genetic algorithm is\ud proposed for tuning of the FPI controller parameters with respect\ud to optimal disturbance rej…
Persistenze e trasformazioni nel sistema viario tra Castronovo e le Madonie: la "via Francigena" tra xenodochia e itineraria peregrinorum
2017
The paper is focused on the route system of North and Central Sicily, from the Madonie Mountains to Vicari and Castronovo in the Early Middle Age. In this period the distribution of religious institutions along the routes shows the dynamics of a historical phase marked by new needs of military control, and the interest of the Teutonic Order.
Tra Palermo e Solunto: insediamenti, ambiente, paesaggio, viabilità e risorse in età antica
2020
This paper describes the hinterland between Palermo and Solunto (north-western Sicily). The focus is the distribution of settlements, linked to the geomorphological context, the potential resources and the ancient route system. The analysis ranges from the Archaic to the Middle Ages, when some relevant sites – both from an economic and strategic point of view – are part of the properties of the Teutonic Order. Some important routes cross the area, both in the SW direction, towards Monte Iato, and in the SE direction, towards the area of influence of the Greek colony of Himera. The analysis is carried out using toponymy and historical cartography, associated with the few archaeological data …
La crisi dei migranti nel Mediterraneo Centrale: le operazioni Search and Rescue non sono un fattore di attrazione
2021
We present a synthesis of some results of our research on the migrant crisis along the Central Mediterranean Route. In the uncertain North-African geopolitical scenario, characterized by Libya’s instability, our results show that, contrary to common beliefs, the search and rescue operations (SARs) at sea are not a pull factor and do not contribute to increase the probability of dying at sea: SARs save the lives of migrants. The migrant flow originates from the structural conditions of the sending countries and is facilitated by the criminal networks, whose activity needs to be contrasted.
Route diversity analyses for free-space optical wireless links within turbulent scenarios
2013
Free-Space Optical (FSO) communications link performance is highly affected when propagating through the time-spatially variable turbulent environment. In order to improve signal reception, several mitigation techniques have been proposed and analytically investigated. This paper presents experimental results for the route diversity technique evaluations for a specific case when several diversity links intersects a common turbulent area and concurrently each passing regions with different turbulence flows.
Silk Road Museums: Design of Inclusive Heritage and Cross-Cultural Education
2021
This work is the result of a study on the characteristics that define some of the museums created on the Silk Road. The approach to these museums has focused especially on the observation of the educational and heritage aspects that define these institutions. Since 1988, numerous actions related to the Silk Road have been promoted by UNESCO. This old trade route has now become a route of dialogue between cultures. Each museum studied is characterized by promoting local and national issues that define it. Educational issues stand out, since the tradition of silk production is very important in each place. Another aspect observed is that heritage issues manage to strengthen the characteristic…
Improvement of Resveratrol Permeation through Sublingual Mucosa: Chemical Permeation Enhancers versus Spray Drying Technique to Obtain Fast-Disintegr…
2021
Resveratrol (RSV) is a natural polyphenol with several interesting broad-spectrum pharmacological properties. However, it is characterized by poor oral bioavailability, extensive first-pass effect metabolism and low stability. Indeed, RSV could benefit from the advantage of the sublingual route of administration. In this view, RSV attitudes to crossing the porcine sublingual mucosa were evaluated and promoted both by six different chemical permeation enhancers (CPEs) as well as by preparing four innovative fast-disintegrating sublingual mini-tablets by spray drying followed by direct compression. Since RSV by itself exhibits a low permeation aptitude, this could be significantly enhanced by…
Autoroutes, activités et territoires: propositions méthodologiques pour évaluer l'impact de l'autoroute sur la spatialisation des activités
2003
International audience; L'autoroute est-elle capable de fixer les activités ? Cette question relativement simple, ancienne etcontroversée, posée par la Société des Autoroutes Paris-Rhin-Rhône n'a toujours pas été résolue malgrél'acceptation d'une logique d'interactions primant sur une logique d'effets automatiques d'un seul élément. Ellese heurte essentiellement à un blocage méthodologique qui empêche, en l'état actuel des recherches, d'yrépondre de manière plus rigoureuse et d'exporter des conclusions validées dans tous les cas. Aussi, nousproposons une nouvelle méthode de recherche qui intègre la totalité du système de localisation des activités etune nouvelle conception de recherche qui …
La cultura ci salverà? Processi di touristification a base culturale nel centro storico di Palermo
2023
Negli ultimi tre decenni la cultura ha avuto un ruolo chiave nella costruzione delle politiche urbane, divenendo uno strumento decisivo nella definizione delle strategie di sviluppo economico e nell’accesso alla competizione globale che caratterizzano l’attuale regime di neoliberismo urbano (Miles e Paddison 2005). Anche nel sud Europa la cosiddetta rigenerazione a base culturale ha rappresentato e continua ancora oggi a rappresentare una vera e propria ortodossia urbana, che trova nel turismo tanto una ragione di esistenza quanto un campo di attuazione. In particolare, negli ultimi anni i centri storici di molte città sudeuropee sono stati oggetto di trasformazioni profonde in cui pratiche…
Urea Glass Route as a Way to Optimize YAGG:Ce3+,Cr3+,Pr3+ Nanocrystals for Persistent Luminescence Applications
2022
A new approach for the synthesis of Y3Al2Ga3O12 (YAGG) nanophosphors allowing the preparation of crystallites with sizes starting from 45 nm is presented. The controllability of the energy and trap density of the resulting material samples by annealing temperature was confirmed by thermoluminescence (TL) measurements. It has been shown that the annealing of samples at temperatures up to 1300 degrees C does not cause any substantial growth of crystallites, still remaining below 100 nm, but leads to changes in the activation energy of the persistent luminescence (PersL) process. On the other hand, annealing above 1400 degrees C results in grain growth on the submicron scale, which was confirm…