88,588 research outputs found
DUO PRESTI - LAGOYA / Ida PRESTI et Alexandre LAGOYA, guitares
No full textTitre uniforme : [Goyescas. Intermedio (Opéra)]Titre uniforme : [Englische Suiten. No 3. BWV 808. Sol mineur]Comprend : ROMANCE : et "MARCHE" extraites de la "SERENADE EN RE" op. 63 / DIABELLI (arr. de A. LAGOYA) - SERENADE N °3 EN SOL / F. CARULLI (arr. de A. LAGOYA) - TROIS DANSES : "GAILLARDE" - ALLEMANDE" - "GAILLARDE" / DOWLAND - arr. de A. LAGOYA - SARABANDE : et "GIGUE" extraites de la "3ème SUITE ANGLAISE" / J.S. BACH (arr. de A. LAGOYA) - LA HONGROISE / Ida PRESTI - INTERMEZZO / GRANADOS (arr. de A. LAGOYA)BnF-Partenariats, Collection sonore - BelieveContient une table des matière
LA RESPONSABILITÀ DEL DISAGIO A SCUOLA. DIMENSIONI TACITE E ASPETTATIVE NELLA RELAZIONE EDUCATIVA
No full textil mestiere di educatore sia un mestiere sociale; un mestiere che implica cioè delle profonde capacità nella gestione della relazione, nell’interpretazione e nella conoscenza di sé e dell’altro e, di conseguenza, nell’espressione di un tenore comunicativo consapevolmente regolato ed efficace. In altri termini, l’ambito della professione docente costituisce un terreno di lavoro nel quale le dimensioni implicite di sé e del contesto costituiscono elementi determinanti nel prefigurare il fare lavorativo concreto, nonché forme di influenza che sagomano tacitamente le rappresentazioni del ruolo e del contesto professionale e che dirigono l’agire in termini di valutazioni, scelte, comportamenti: il modo di immaginarsi docenti “crea” il proprio essere docente; così come, il modo di immaginare i propri alunni “crea” gli alunni stessi.
Il riferimento a tali dinamiche tacite richiama, dunque, il tema della “responsabilità”, nel mostrare la quota di incidenza che rappresentazioni ed aspettative personali hanno nel prefigurare le condizioni della relazione educativa e, quindi, i destini formativi che da essa derivano.
A partire da queste premesse il contributo intende delineare le prerogative di una formazione professionale critico-riflessiva degli insegnanti, focalizzata cioè sulla soggettività del docente che dialoga con la soggettività dell’alunno, ovvero sulle problematiche, sui pensieri, sulle condizioni che costituiscono le variabili nascoste che tacitamente influenzano e dirigono la relazione stessa e, di conseguenza, l’agito professionale
The Pedagogical Approach of Guidance in Higher Education. An Educational Research Experience in Italian Universities
No full textToward Optimal Cross-layer Solutions for Cognitive Radio Wireless Networks
No full textCognitive radio (CR) networks have been proposed as a viable solution to spectrum scarcity problems. In CR networks, CR nodes exploit spectrum holes in space, time and/or frequency to transmit on licensed frequency bands without affecting primary users. In such a dynamic and unpredictable environment, CR networks require the ability to gather information on the surrounding available spectrum and to exploit this information to maximize CR nodes performance. In a companion paper we deal with sensing architecture and protocols. In this paper, instead, we derive a cross-layer scheme for cognitive radio networks which jointly optimize the sources flow rates, routing and medium access control while accounting for and exploiting the available spectrum resources. The proposed scheme builds on important recent results on close to optimal fully distributed CSMA-based scheduling algorithms, which allows us to derive a fully distributed solution
Spatial extent of recent vertical tectonic motions misured in NE Sicily coastal area. Insights from marine geology and coastal geomorphology studies.
No full textVertical position of sea-level, pointed out by related deposits and morphologies, provide useful markers to estimate tectonic uplift rates. For the Holocene very high uplift rates are misured in the northeast Sicily coast (Antonioli et al., 2009). This study compare vertical tectonic movements and marine geology data in the coastal sector between Capo d’Orlando and Brolo (NE Sicily); tectonic lineaments show different trends both onland (Nigro & Sulli, 1995) and offshore (Nicolich et al.,1982) and also the morphological response follow closely this difference. The geomorphologic survey provided data on Holocene uplift rates. We studied an archaeological ancient quarry of grinding wheels for oil that has been found in the Capo d’Orlando inshore (Scicchitano et al., 2011). They present semi submerged circular holes in Stilo-Capo d’Orlando deposits (Carbone et al., 1998). The tectonic uplift was evaluated as the difference between the observed local paleo-sea level position and the predicted sea-level curve for the same locality (Lambeck et al., 2011). The resulting uplift rates is 0.36 mm/yr (Scicchitano et al., 2011). In this area we studied also the Brolo stack. It is a metamorphic rocks emerging at 450 m from the coastline. The study led to discovery a fossils-bearing conglomerate in protected trays at 3.5 m a.s.l.. Radiocarbon analysis on a gastropod, gave us an age of 4965 years +-70 cal BP. If we compare this data with the predicted local sea level curves (Lambeck et al., 2011), we obtain an uplift rate about 1.5 mm/yr (Lo Presti et al., 2010), which is higher than that calculated in the study of archaeological rest. A detailed study of Brolo sector show us different morphological coastline position of Brolo plain. A picture of the year 1847 shows the coastline about 200 m landward. In Brolo coastal plain we have also found a Spondylus at -6 m b.s.l. We wait for the radiocarbon dating which allows us to have a new uplift rate data.
The analysis of marine geology data (Multibeam) evidenced structures connected to different faults systems, such as the submarine canyons that are the continuation of river beds. Multibeam data evidenced also tilted NE-ward submerged surfaces, indicating existing structural movements, interesting only restricted areas. So, very different uplift rates in the Holocene in very close areas distant only about 10 kilometers: both 0.36 mm/yr (Scicchitano et al. 2011) and 1.5 mm/yr (Lo Presti et al. 2010), and morphobathymetric data (tilted surfaces), evidence the important role of active tectonic lineaments. Seismic reflection profiles support this assumption, showing the metamorphic basement strongly dissected by high-angle faults, which at place determines the occurrence of emergent rock bodies (e.g. the Brolo stack). All this suggesting the occurrence of “restricted regions” in the coastal-marine sector with different geological behavior as response to prominent tectonic releasing bands, determining their horizontal and vertical movements
Lo studente in psicologia tra idealità e professionalizzazione: come cambiano interessi e valori professionali nel corso degli studi universitari
No full textInteressi, tipologie e valori professionali come indicatori dello sviluppo dell’identità professionale in studenti universitari di psicologia
No full textA Latency-aware reward model based greedy heuristic for the virtual network embedding problem
No full textThe increasing use of virtualization (e.g., in Cloud Computing, Software Defined Networks), demands to Infrastructure Providers (InPs) to optimize the placement of the virtual network requests (VNRs) into a substrate network. In addition to that, they need to cope with QoS, in particular for the rising number of time critical applications (e.g., healthcare, VoIP). Granting resource optimization along with QoS compliance, are two competing goals. In this work, we propose a two-stage virtual network embedding (VNE) algorithm, which maps first virtual nodes to substrate nodes based on a suitable latency-aware ranking algorithm and then maps links along the shortest paths, in terms of latencies. The central component of our approach is a new node ranking algorithm, MCRR-LA, based on Markov Reward Processes, which associates a metric that accounts for and well captures the amount of local resources combined with latency values available in the vicinity of a certain node. The metric is complemented with a Breadth-First search. We widely evaluated our algorithm through simulation. Our experiments point out that our algorithm is able to reduce the average path delay while granting good resource performances in terms of lower VNR blocking rate and higher revenues. We compared our algorithm with a previous two-stage approach obtaining good results useful to underline the strengths of the novel approach
A Markov reward based resource-latency aware heuristic for the virtual network embedding problem
No full textAn ever increasing use of virtualization in various emerging
scenarios, e.g.: Cloud Computing, Software Defined Networks,
Data Streaming Processing, asks Infrastructure Providers
(InPs) to optimize the allocation of the virtual network
requests (VNRs) into a substrate network while satisfying
QoS requirements. In this work, we propose MCRM,
a two-stage virtual network embedding (VNE) algorithm
with delay and placement constraints. Our solution revolves
around a novel notion of similarity between virtual and physical
nodes. To this end, taking advantage of Markov Reward
theory, we define a set of metrics for each physical
and virtual node which captures the amount of resources
in a node neighborhood as well as the degree of proximity
among nodes. By defining a notion of similarity between
nodes we then simply map virtual nodes to the most similar
physical node in the substrate network. We have thoroughly
evaluated our algorithm through simulation. Our experiments
show that MCRM achieves good performance results
in terms of blocking probability and revenues for the InP,
as well as a high and uniform utilization of resources, while
satisfying the delay and placement requirements
Integrating Work and Vocational Psychology to evaluate the effectiveness of career interventions
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