Search results for " virtual"
showing 10 items of 493 documents
Reti comunicative ed interazioni virtuali nella soluzione di dilemmi sociali on line
2004
Strutture continue a parametri incerti
2005
Obiettivo del presente lavoro è la valutazione della risposta di strutture continue in campo elastico lineare che presentano incertezze nei parametri geometrici e/o meccanici
Contenidos digitales y profesores universitarios: un estudio de caso sobre usos y prácticas docentes en campus virtuales
2014
El propósito de este trabajo es conocer las prácticas promovidas por los docentes universitarios de magisterio gracias al uso de contenidos digitales en campus virtuales. En esta comunicación se exponen los resultados preliminares de la investigación. La singularidad de este estudio viene marcada por la muestra, un estudio de casos, ya que se trata de cinco docentes que desarrollan su actividad profesional en universidades presenciales y online. Los primeros resultados verifican las diferencias que existen entre las universidades presenciales y online, entre otras: en el uso de la plataforma que hacen los profesores, la existencia o no de prácticas mediadas tecnológicamente, el uso y usos d…
La fortezza perduta: due ipotesi ricostruttive sul Castellammare di Palermo
2014
L’uso di modelli digitali per lo studio e la prefigurazione dell’architettura è divenuta negli ultimi venti anni una prassi che può ritenersi consolidata; i modelli digitali hanno aperto nuove prospettive di ricerca anche all’indagine storica, specie se condotta su manufatti diruti. In alcuni casi il modello digitale costituisce una soluzione efficace per la prefigurazione di progetti mai realizzati o per l’anastilosi virtuale di edifici perduti; la validità scientifica di tali modelli è strettamente legata alla coerenza delle metodologie di ricostruzione adottate, ad un sistematico ricorso alle fonti documentarie e alla validazione di precedenti ipotesi ricostruttive. Il presente contribut…
Ricostruzione virtuale delle crociere dell'aula della chiesa di San Domenico a Cagliari (XVI sec.)
2016
Il saggio affronta la ricostruzione virtuale delle crociere dell’aula della chiesa di San Domenico a Cagliari, distrutta nel 1943 dai bombardamenti alleati che colpirono la città. La ricostruzione virtuale, combinando gli strumenti dell’indagine storica e della rappresentazione digitale, è stata impiegata per comprendere il processo costruttivo della copertura dell’aula. Lo studio ha inoltre permesso di elaborare una più corretta interpretazione dei dettagli linguistici e delle caratteristiche costruttive delle crociere, consentendo di elaborare nuove ipotesi sulla fabbrica, attraverso la comparazione con architetture coeve. This paper focuses on the 3D virtual reconstruction of the star-sh…
Exploring the discursive construction of subgroups in global virtual teams
2021
The global teams literature has increasingly documented challenges due to demographic faultlines. While this literature tends to assume that faultlines are fixed and produce negative outcomes for teams, organizational communication scholars have long regarded team processes as dynamic and fluid. Drawing on a CCO perspective, we offer a re-conceptualization of subgroups as dynamic and discursively constructed. This study draws on an in-depth, longitudinal analysis of two global virtual teams to examine the discursive construction of subgroups and the role they play in team dynamics. Through a multi-method analysis of a corpus of 839 emails and 16 interviews with members of two global project…
The Economic Impact of Restricted Water Supply: a Computable General Equilibrium Analysis
2007
Water problems are typically studied at the level of the river catchment. About 70% of all water is used for agriculture, and agricultural products are traded internationally. A full understanding of water use is impossible without understanding the international market for food and related products, such as textiles. The water embedded in commodities is called virtual water. Based on a general equilibrium model, we offer a method for investigating the role of water resources and water scarcity in the context of international trade. We run five alternative scenarios, analyzing the effects of water scarcity due to reduced availability of groundwater. This can be a consequence of physical con…
A grid representation for distributed virtual environments
2004
Fast Internet connections and the widespread use of high performance graphic cards are making Distributed Virtual Environments (DVE) very common nowadays. The architecture and behavior of these systems are very similar to new grid computing applications where concepts such as sharing and high scalability are extremely exploited. However, there are several key issues in these systems that should still be improved in order to design a scalable and cost-effective DVE system. One of these key issues is the partitioning problem. This problem consists of efficiently assigning clients (3-D avatars) to the arbiters (servers) in the system. As an alternative to the ad-hoc heuristic proposed in the l…
Incentive Mechanism for Resource Allocation in Wireless Virtualized Networks with Multiple Infrastructure Providers
2020
To accommodate the explosively growing demands for mobile traffic service, wireless network virtualization is proposed as the main evolution towards 5G. In this work, a novel contract theoretic incentive mechanism is proposed to study how to manage the resources and provide services to the users in the wireless virtualized networks. We consider that the infrastructure providers (InPs) own the physical networks and the mobile virtual network operator (MVNO) has the service information of the users and needs to lease the physical radio resources for providing services. In particular, we utilize the contract theoretic approach to model the resource trading process between the MVNO and multiple…
Cognitive assessment of OCD patients: Neurovr vs neuropsychological test
2014
This study aimed to evaluate the reliability and validity of the Neuro- Virtual Reality as tool for the neuropsychological assessment in OCD patients. We used the neuropsychological battery and a virtual version of the Multiple Errand Test (V-MET), developed using the NeuroVR software, in order to evaluate the executive functions, the ability to plan ahead on complex problem solving tasks in daily life in 30 obsessive compulsive disorder (OCD) patients and 30 healthy controls. The results showed the presence of difficulties of OCD patients: lower levels of divided attention and higher levels of errors; higher mean rank of inefficiencies, interpretation failures and rule breaks and longer ti…