Search results for "Digital"
showing 10 items of 3267 documents
Digital natives: Lucky or jellied?
2018
The technology now seems to have involved not only the world of adults, but also and especially that of children, becoming a form of communication and rapid interaction and widespread dissemination. Some parents start to worry about a possible technolog- ical dependency, given the hours spent by the youngest, called digital children, in front of computer, smartphones and tablets. A decade ago, the sociologist Mark Prensky spoke of digital natives, that is the first generation of children grew up with consoles, videogames and computers while today we are witnessing an evolution of this concept in the third generation of digital, appeared approximately with the arrival of iPad and tablet and …
Efficiency of a digital particle image velocimetry (DPIV) method for monitoring the surface velocity of hyper-concentrated flows
2018
Digital particle image velocimetry records high resolution images and allows the identification of the position of points in different time instants. This paper explores the efficiency of the digital image-technique for remote monitoring of surface velocity and discharge measurement in hyper-concentrated flow by the way of laboratory experiment. One of the challenges in the application of the image-technique is the evaluation of the error in estimating surface velocity. The error quantification is complex because it depends on many factors characterizing either the experimental conditions or/and the processing algorithm. In the present work, attention is devoted to the estimation error due …
Digital diagnosis records in orthodontics. An overview.
2006
Actualmente la tecnología digital es una realidad que cada vez se impone más en todos los ámbitos clínicos y, por tanto, existe una incorporación también de los ortodoncistas a la digitalización de los registros ortodóncicos diagnósticos. En este trabajo queremos hacer una valoración sobre las ventajas y desventajas, del uso de la radiografía digital, la fotografía digital así como de la última incorporación, los modelos de estudio digitalizados. Basados en encuestas previas, mostraremos la situación actual en nuestro país en cuanto al número de profesionales que utilizan estos registros digitales de manera sistemática. Digital technology is becoming day by day a more important procedure in…
Digital Techniques for High-Rate High-Resolution Radiation Measurements
2014
Digital pulse processing (DPP) techniques are increasingly used in the development of modern spectroscopic systems. DPP systems, based on direct digitizing and processing of detector signals (preamplifier output signals), ensure higher flexibility, stability, lower dead time, higher throughput and better energy resolution than traditional pulse processing systems. In this work, we present our progress in the development of DPP systems for high-rate high-resolution radiation measurements. An innovative digital system, able to perform multi-parameter analysis (input counting rate, pulse height, pulse shape, event arrival time, etc.) even at high photon counting rates is presented. Experimenta…
La rappresentazione digitale per l’accessibilità al patrimonio culturale
2021
Da diversi anni, la rappresentazione digitale ha assunto un ruolo fondamentale nel campo della valorizzazione del patrimonio culturale, introducendo nuove modalità operative. Allo stesso tempo e con frequenza sempre maggiore siti monumentali, musei e istituzioni culturali si avvalgono di applicazioni e installazioni che, grazie all’impiego di tecnologie di uso comune, adoperano il linguaggio multimediale per consentire l’accessibilità virtuale ai Beni Culturali. Questo contributo racconta brevemente alcuni esempi di approcci e applicazioni pensati per assicurare accessibilità tattile, sonora o virtuale a un’utenza ampia e variegata. Sono qui analizzati approcci differenti che favoriscono il…
Estonian e-Residency: a model for Europe
2020
This paper aims to examine one of the main implications of freedom of establishment: since it is possible to transfer a company abroad effortlessly, in fact, governments are adopting various strategies to make themselves more attractive. These are based on two main directives: first, a convenient tax system, as in Malta, on the other side technology, as proposed in Estonia. These countries’ strategy is radically different: Malta offers an extremely profitable tax system, while Estonia, on the other side, is the only nation in Europe where the optimal use of technology and its potential allows the consolidation and implementation of a totally digital system, whose advantages outweigh those o…
An efficient VM-based software protection
2011
This paper presents Truly-protect, a system, incorporating a virtual machine, that enables execution of encrypted programs. Our intention is to form a framework for a conditional access/digital rights management system.
Digital filtering and analysis for a semiconductor X-ray detector data acquisition
2007
Abstract Pile-up distortion is a major drawback in X-ray spectroscopy at high count rate. Pulse width narrowing with shaping techniques can lead to the reduction of the pile-up distortion, but a low shaping time reduces the noise filtration and leads to a poor energy resolution. Thus, only a best compromise solution between the pile-up and the noise requirements is achievable. The hardware manipulation needed to adjust the parameters of the traditional electronic shaping amplifiers makes it uneasy to tests various settings in different conditions. Digital techniques can help to overcome such difficulties. A digital signal processing and analysis system for X-ray spectroscopy is described in…
Implementation of pattern recognition algorithm based on RBF neural network
2002
In this paper, we present implementations of a pattern recognition algorithm which uses a RBF (Radial Basis Function) neural network. Our aim is to elaborate a quite efficient system which realizes real time faces tracking and identity verification in natural video sequences. Hardware implementations have been realized on an embedded system developed by our laboratory. This system is based on a DSP (Digital Signal Processor) TMS320C6x. The optimization of implementations allow us to obtain a processing speed of 4.8 images (240x320 pixels) per second with a correct rate of 95% of faces tracking and identity verification.
Muon identification with the ATLAS Tile Calorimeter Read-Out Driver for Level-2 trigger purposes
2008
The Hadronic Tile Calorimeter (TileCal) at the ATLAS experiment is a detector made out of iron as passive medium and plastic scintillating tiles as active medium. The light produced by the particles is converted to electrical signals which are digitized in the front-end electronics and sent to the back-end system. The main element of the back-end electronics are the VME 9U Read-Out Driver (ROD) boards, responsible of data management, processing and transmission. A total of 32 ROD boards, placed in the data acquisition chain between Level-1 and Level-2 trigger, are needed to read out the whole calorimeter. They are equipped with fixed-point Digital Signal Processors (DSPs) that apply online …