Search results for " Local"
showing 10 items of 2101 documents
Real-time Sound Source Localization on Graphics Processing Units
2013
Abstract Sound source localization is an important topic in microphone array signal processing applications, such as camera steering systems, human-machine interaction or surveillance systems. The Steered Response Power with Phase Transform (SRP- PHAT) algorithm is one of the most well-known approaches for sound source localization due to its good performance in noisy and reverberant environments. The algorithm analyzes the sound power captured by a microphone array on a grid of spatial points in a given room. While localization accuracy can be improved by using a high resolution spatial grid and a high number of microphones, performing the localization task in these circumstances requires …
CANDIDATI “STRANIERI” E ORGANI CONSULTIVI: UNO SGUARDO SULLA PARTECIPAZIONE POLITICA DEI MIGRANTI
2016
La partecipazione politica locale dei migranti costituisce un fenomeno interessante e ancora poco indagato. Il contributo affronta in breve due elementi: la partecipazione politica dei migranti in occasione delle elezioni amministrative 2012 nel Comune di Palermo in termini di elettorato passivo e le funzioni e le modalità di partecipazione degli organi consultivi per i migranti presenti in Sicilia. Local political participation of migrants is an interesting and unobserved phenomenon. The contribution deals briefly with two aspects: the political participation of migrants during the 2012 administrative elections in the Municipality of Palermo in terms of passive electorate and the functions…
Streaming for vehicular users via elastic proxy buffer management
2004
In this article we refer to the market of vehicular networks, where groups of customers located in the same public vehicle (e.g., a train or bus) connect to a terrestrial network through a wireless/satellite backbone link. Elastic buffering is a proxy management technique devised to decouple the multimedia information retrieval rate on the network backbone from the playout streaming rate at the user terminal. It has been shown in the past that the application of elastic buffering mechanisms in terrestrial networks brings significant advantages in terms of network effectiveness. We show that elastic buffering is an extremely effective means to reduce, or even eliminate, streaming service out…
Reti per la mobilità e struttura sociale dello spazio urbano: una rappresentazione multidimensionale dei cambiamenti in corso a Palermo
2017
Incidendo su varie dimensioni dello sviluppo sostenibile, le reti per la mobilità stanno acquisendo un ruolo sempre più centrale nei processi di rigenerazione delle aree urbane, divenendo così oggetto di crescenti attenzioni da parte dei governi locali. Ciò impone che si producano nuove capacità di formulare strategie integrate in grado di cogliere il nesso tra reti, ambiente costruito, spazio pubblico e struttura socio-economica delle città, così come accrescere le capacità cognitive degli attori locali, producendo letture più dinamiche ed attualizzate del cambiamento sociale verso il quale orientare le future scelte di pianificazione della mobilità sostenibile. Rispetto a questa premessa,…
Agenda urbana delle città della Sicilia Occidentale: la greenway costiera come strumento di coesione a valorizzazione territoriale
2017
Nell’ambito dell’Agenda urbana regionale della Sicilia per il ciclo di programmazione 2014-2020, le principali cinque città di tale sistema hanno deciso di intraprendere un per- corso progettuale comune che le condurrà alla redazione di una Strategia di Sviluppo Urbano Sostenibile ispirata da tre obiettivi cardine: il rafforzamento della coesione territoriale, l’incremento dell’accessibilità alle risorse territoriali, un miglioramento complessivo dell’offerta di servizi locali. Un elemento connettivo della strategia rispetto ai tre obiettivi sopra delineati è la progettazione di una ciclovia che accresca le relazioni di sinergia tra le città e tra esse e le risorse territoriali diffuse, sec…
Preventing root caries development under oral biofilm challenge in an artificial mouth
2013
Objectives: To study the preventive effects of chlorhexidine against root caries under oral biofilm in an artificial mouth. Study Design: Sixteen human tooth-root disks were inoculated with a salivary sample that was produced by mixing the unstimulated saliva of three adults who had no untreated caries. The disks were incubated in an artificial mouth fed with a 5% sucrose solution three times daily for one week. Eight disks received a twice daily rinse of 0.12% chlorhexidine (test group). The other eight disks were rinsed in distilled water (control). The biofilm was then studied with three techniques: colony forming unit (CFU) counting, scanning electron microscopy (SEM) and confocal laser…
2,8-Diazido-ATP — a short-length bifunctional photoaffinity label for photoaffinity cross-linking of a stable F1 in ATP synthase (from thermophilic b…
1995
Abstract To demonstrate the direct interfacial position of nucleotide binding sites between subunits of proteins we have synthesized the bifunctional photoaffinity label 2,8-diazidoadenosine 5′-triphosphate (2,8-DiN3ATP). UV irradiation of the F1-ATPase (TF1) from the thermophilic bacterium PS3 in the presence of 2,8-DiN3ATP results in a nucleotide-dependent inactivation of the enzyme and in a nucleotide-dependent formation of α-β crosslinks. The results confirm an interfacial localization of all the nucleotide binding sites on TF1.
A Molecular Electron Density Theory Study of the Reactivity of Azomethine Imine in [3+2] Cycloaddition Reactions
2017
The electronic structure and the participation of the simplest azomethine imine (AI) in [3+2] cycloaddition (32CA) reactions have been analysed within the Molecular Electron Density Theory (MEDT) using DFT calculations at the MPWB1K/6-311G(d) level. Electron localisation function (ELF) topological analysis reveals that AI has a pseudoradical structure, while the conceptual DFT reactivity indices characterise this TAC as a moderate electrophile and a good nucleophile. The non-polar 32CA reaction of AI with ethylene takes place through a one-step mechanism with low activation energy, 5.3 kcal/mol-1. A bonding evolution theory (BET) study indicates that this reaction takes place through a non-…
Evaluation of the anaesthetic properties and tolerance of 1:100,000 articaine versus 1:100,000 lidocaine. : a comparative study in surgery of the low…
2011
Objectives: To evaluate the anaesthetic properties and tolerance of articaine versus lidocaine at equal vasoconstrictor concentration. Study Design: A total of 96 male and female patients who underwent surgical treatment of the lower third molar participated. Patients were randomly assigned to articaine hydrochloride with epinephrine 1:100,000 and lidocaine hydrochloride with epinephrine 1:100,000. The variables analysed were latency period, duration of anaesthetic effect, tolerance and adverse reactions. Results: Both the latency period and the duration of anaesthetic effect were greater for articaine, although the differences were not statistically significant. Latency: mean difference of…
Local vs general anaesthesia in the development of neurosensory disturbances after mandibular third molars extraction: A retrospective study of 534 c…
2016
Background The choice of the anaesthetic modality is one of the primary steps during planning of third molar surgery. The aim of the present study was to compare the risk of developing neurological injures of the inferior alveolar nerve (IAN) and lingual nerve (LN) in patients treated for wisdom teeth removal under general anaesthesia (GA) with a group treated under local anaesthesia (LA). Material and Methods This is an observational retrospective, unicentric study; between September 2013 and September 2014, 534 patients underwent third molar surgery, 194 (36,3%) under GA and 340 (63,7%) under LA by the same oral surgeon. Differences in the incidence of IAN and LN injures between groups ha…