Search results for " multimedia"
showing 10 items of 108 documents
How could multimedia information about dental implant surgery effects patients- anxiety level?
2017
Background To evaluate the effects of different patient education techniques on patients’ anxiety levels before and after dental implant surgery. Material and Methods Sixty patients were randomized into three groups; each contained 20 patients; [group 1, basic information given verbally, with details of operation and recovery; group 2 (study group), basic information given verbally with details of operative procedures and recovery, and by watching a movie on single implant surgery]; and a control group [basic information given verbally “but it was devoid of the details of the operative procedures and recovery”]. Anxiety levels were assessed using the Spielberger’s State-Trait Anxiety Invent…
Introducción de metodologías de aprendizaje basado en problemas mediante tecnologías multimedia
2014
La propuesta de trabajar por competencias en lugar de hacerlo como se hacía tradicionalmente, por objetivos, ha hecho proliferar las propuestas y alternativas metodológicas para favorecer un cambio en la Educación Superior. Una de estas metodologías es el aprendizaje basado en problemas (ABP). El ABP es una metodología de aprendizaje en la cual el punto de partida es un problema construido por el profesor que permite al estudiante identificar necesidades para comprender mejor ese problema, identificar principios que sustentan el conocimiento y cumplir objetivos de aprendizaje relacionados con cada porción del contenido de la materia. En el caso de las tecnologías de la información y las com…
Sperimentazione di smart device equipaggiati con GPS per guide multimediali di siti archeologici
2009
In last years several methodologies have been developed for guided tours of cultural heritage supported by handheld computers (PocketPC). The instruments used for this purpose are pocketPC, possibly equipped with a GPS receiver, which offer contents related to the place where the visitor is at that moment. This paper concerns the design of an innovative multimedia guide running on handheld computers to support the visit of archaeological sites. To that end the performances of various mobile phones and pocketPCs, equipped with low-cost GPS, have been tested; an application software developed by the Palermo research Unit has been installed into these devices to locate in real time the positio…
A multimodal retina-iris biometric system using the Levenshtein distance for spatial feature comparison
2020
Abstract The recent developments of information technologies, and the consequent need for access to distributed services and resources, require robust and reliable authentication systems. Biometric systems can guarantee high levels of security and multimodal techniques, which combine two or more biometric traits, warranting constraints that are more stringent during the access phases. This work proposes a novel multimodal biometric system based on iris and retina combination in the spatial domain. The proposed solution follows the alignment and recognition approach commonly adopted in computational linguistics and bioinformatics; in particular, features are extracted separately for iris and…
Personalized multimedia touristic services for hybrid broadcast/broadband mobile receivers
2010
This paper presents the topology of a multimedia tourism service that targets mobile devices equipped with broadband and either multicast or broadcast access capabilities. Multicast / Broadcast access is used to handle the delivery of multimedia data to many simultaneous users in the service area. The solution adopted is based on existing standards for mobile TV services, but introducing features that enable the provision of generic multimedia services on top of mobile hybrid broadband and broadcast networks. Furthermore, this paper shows how to use standardized interfaces originally defined for interactive mobile TV broadcasting to build personalized mobile multimedia services that do not …
Revista electrónica de investigación y evaluación educativa
2014
La Economía Experimental ha desarrollado diferentes experimentos que pueden ser aprovechados como una actividad docente en la enseñanza de la Economía. Su naturaleza activa y participativa motiva a los alumnos y estimula la reflexión y la mejor comprensión de algunos fenómenos económicos como el funcionamiento de los mercados, donde los resultados individuales dependen del conjunto de las decisiones de los agentes y de sus interacciones. Los experimentos económicos tienen ya una larga tradición, y han proporcionado resultados espectaculares y conclusiones ampliamente admitidas sobre la dinámica de mercados y el efecto de las instituciones económicas. Las nuevas tecnologías facilitan la real…
Communication Design for the Dissemination of Scientific Knowledge. Languages, Tools, Technologies, Collaborative Processes for Museum Education
2019
Il testo propone l’analisi di un articolato processo di ricerca-azione, avviato in occasione di alcune sperimentazioni didattico-scientifiche nate dalla collaborazione tra le discipline del design, della rappresentazione multimediale, delle scienze botaniche nell’Università di Palermo. L’esperienza proposta è stata centrata sulla comunicazione scientifica e sull’elaborazione di prodotti comunicativi per la didattica museale e istituzionale dell’Orto Botanico di Palermo. In quest’occasione sono stati sperimentati strumenti progettuali, tecnologie e modalità di espressione successivamente rielaborati anche in un progetto di sviluppo territoriale, che ha portato alla realizzazione del “Micromu…
A new Media Access Control layer Quality of Service multicast scheme for IEEE 802.11s based wireless mesh networks
2014
Inderscience Publishers; International audience; We propose a new Media Access Control (MAC) layer enabling Quality of Service (QoS) multicast scheme for IEEE 802.11s networks, where a unicast routing protocol called HWMP (Hybrid Wireless Mesh Protocol) is defined. The HWMP protocol is more adapted for best effort traffic, that's why its usage is not suitable for real time multimedia applications. The goal of our proposed mechanism is to take into account multicast communication under QoS constraints for the IEEE 802.11s mesh networks where no QoS multicasting has been defined. Our multicasting scheme handles QoS guarantee for real time applications. Indeed, our scheme is based on finding t…
Experiencing with electronic image stabilization and PRNU through scene content image registration
2021
Abstract This paper explores content-based image registration as a means of dealing with and understanding better Electronic Image Stabilization (EIS) in the context of Photo Response Non-Uniformity (PRNU) alignment. A novel and robust solution to extrapolate the transformation relating the different image output formats for a given device model is proposed. This general approach can be adapted to specifically extract the scale factor (and, when appropriate, the translation) so as to align native resolution images to video frames, with or without EIS on, and proceed to compare PRNU patterns. Comparative evaluations show that the proposed approach outperforms those based on brute-force and p…
Disseny d'un entorn multimèdia i telemàtic aplicat a la Comptabilitat de Costos
2008
El objetivo de este trabajo es desarrollar un modelo virtual-presencial que favorezca un aprendizaje controlado y dirigido por el profesor y donde el estudiante sea el protagonista de su proceso formativo. Las características del entorno multimedia y telemático propuesto se desarrolla sobre la plataforma de e-learning Moodle, si bien los recursos ofrecidos por la misma han sido ampliados con tres innovaciones relevantes: i) el gestor de contenidos, que permite integrar audio, video, documentos, imágenes y cuestionarios; ii) Un generador automatizado de ejercicios autoevaluables, que permite la elaboración de enunciados individualizados para cada estudiante y su solución; iii) Una ficha de e…