Search results for "Multimedia"
showing 10 items of 692 documents
Experiences from a wearable-mobile acquisition system for ambulatory assessment of diet and activity
2017
Public health trends are currently monitored and diagnosed based on large studies that often rely on pen-and-paper data methods that tend to require a large collection campaign. With the pervasiveness of smart-phones and -watches throughout the general population, we argue in this paper that such devices and their built-in sensors can be used to capture such data more accurately with less of an effort. We present a system that targets a pan-European and harmonised architecture, using smartphones and wrist-worn activity loggers to enable the collection of data to estimate sedentary behavior and physical activity, plus the consumption of sugar-sweetened beverages. We report on a unified pilot…
An Efficient Distributed Algorithm for Generating Multicast Distribution Trees
2005
Multicast transmission may use network resources more efficiently than multiple point-to-point messages; however, creating optimal multicast trees (Steiner Tree Problem in Networks) is prohibitively expensive. For this reason, heuristic methods are generally employed. Conventional centralized Steiner heuristics provide effective solutions, but they are unpractical for large networks, since they require complete knowledge of the network topology. This paper proposes a distributed algorithm for the heuristic solution of the Steiner Tree Problem. The algorithm allows the construction of effective distribution trees using a coordination protocol among the network nodes. The algorithm has been i…
Multicast delivery of file download services in 3G mobile networks with MBMS
2008
This article investigates the efficient transmission of file download services to several users simultaneously in 3G mobile networks with HSDPA (High-Speed Downlink Packet Access) and MBMS (Multimedia Broadcast Multicast Services). HSDPA supports high speed point-to-point (p-t-p) transmissions (up to several Mb/s), whereas with MBMS the same content can be transmitted with a point-to-multipoint (p-t-m) connection to multiple users in a unidirectional fashion. Multicast delivery can be implemented through only p-t-p transmissions with HSDPA, a single p-t-m transmission with MBMS, or using both jointly in a hybrid approach by employing HSDPA for error repair of the MBMS p-t-m transmission. We…
Comunicare per valorizzare: un progetto per il sito Archeologico di Eraclea Minoa
2019
Innovativi processi e linguaggi multimediali stanno trasformando i tradizionali sistemi di valorizzazione dei beni culturali. La pervasiva diffusione delle tecnologie digitali e virtuali ha infatti permesso l’elaborazione di strumenti e metodi particolarmente efficaci per la comunicazione e valorizzazione anche degli aspetti immateriali di oggetti e siti caratterizzati dal loro valore storico e dai significati culturali che trasmettono. In particolare la complessità e ricchezza d’implicazioni culturali proprie dei siti archeologici, richiedono oggi efficaci elementi di informazione e comunicazione per attivare coinvolgimento e piena consapevolezza nei visitatori, anche se in presenza di poc…
Animated Representations. Multimedia Techniques for Storytelling
2023
The paper presents the results of two case studies that use multimedia language for the knowledge, appreciation and communication of works of art of different epochs, nature and location and that, through the tools of Representation, make use of digital methods of animation and visualisation. The final results concern the creation of multimedia products designed to narrate a conceptual path, through a reasoned animation of raster and vectorial products. Together with the necessary technical and IT skills, it is essential to reaffirm the role of representation, which is central to image processing, recognition of graphic analogies, study of proportions, knowledge of the laws of visual percep…
Tutor-Sky: A web environment for multimedia on-line education
2005
Computer Science and Telecommunication technologies are being more and more integrated in teaching and learning systems. The subsequent modification of the educational world becomes a natural event towards a student who is immersed in a multimedia technological society and expects to find a similar learning environment. At present, multimedia is widely used in education to improve and integrate the learning processes and is ever more used in on-line education where the different media help in re-creating the “natural” interaction between teachers and students. There are many tools that allow creation and publication on web of learning contents, but none of them allows teachers to easily and…
Noi e la Chimica - Iprof
2012
Contenuti digitali per lo studio della chimica nella scuola secondaria superiore
Forecasting future trajectories for immersive journalism
2021
In this book we have critically explored the emerging practices of immersive journalism. In the news business, experimenting with new forms of storytelling has become the new normal. After spending a decade to get familiar with simple virtual reality tools, however, the future of immersive journalism is still considered uncertain. Immersive storytelling appears to become more concentrated on special events and locations. Journalistic virtual reality skills are increasingly crafted away from the newsrooms by small and specialized subcontractors. Sponsoring VR by the big tech companies tends to diminish in parallel with a growing move towards augmented reality investments. peerReviewed
A Neural Network-Based Algorithm for 3D Multispectral Scanning Applied to Multimedia
2005
We describe a new stereoscopic system based on a multispectral camera and an LCD-Projector. The novel concept we want to show consists in the use of multispectral information for 3D-scenes reconstruction. Each 3D point is linked to a curve representing the spectral reflectance. This latter is a physical representation of the matter and presents the advantage over color information, which is perceptual, that it is independent from both illuminant and observer. We first present an easy methodology to geometrically and spectrally calibrate such a system. We then describe an algorithm for recovering 3D coordinates based on triangulation and an algorithm for reflectance curves reconstruction bas…
<title>Structure analysis of the Polish academic information society using MDS method</title>
2006
The article presents the methodology of webometrics research and analysis aiming at determining similar features of objects belonging to the Polish information society, which uses the Internet and its www resources for communication purposes. In particular, the analysis applies to the selected Polish technical universities. The research was carried out in several phases - on different data groups - with regards to the Internet space and time changes. The results have been presented in a form of two and three-dimensional topography maps. For the purposes of this analysis, the computer methods of multidimensional scaling were used. The research will be further continued for a selected group o…