Search results for "git"
showing 10 items of 7116 documents
Media education and educational commons for youth civic engagement. A case study from the Horizon 2020 project SMOOTH
2023
This study presents the preliminary findings of the first round of implementation of a case study included in the Horizon 2020 project SMOOTH. The project's main objective is to introduce and study the emergent paradigm of the educational commons as an alternative system of values and actions for promoting intercultural and intergenerational dialogue and establishing spaces of democratic citizenship that support the development of local communities. Our case study adopts this paradigm with insights derived from the field of media education. Hence, our research questions were as follows: (a) How do young people collectively experience and build the educational commons? (b) How do participant…
Digital pulse processing techniques for X-ray and gamma ray semiconductor detectors
2012
Digital pulse processing (DPP) systems, based on direct digitizing and processing of detector signals, have recently been favoured over analog electronics, ensuring higher flexibility, stability and lower dead time. We present our research activities on the development of X-ray and gamma ray spectrometers based on semiconductor detectors and DPP systems. We developed off-line and real-time DPP systems able to perform precise height and shape analysis of detector pulses. X-ray and gamma ray spectra measurements with cadmium telluride (CdTe) and germanium (Ge) detectors highlight the excellent performance of the systems both at low and high rate environments (up to 800 kcps).
Un sistema digitale innovativo per la caratterizzazione energia-flusso di fasci X diagnostici
2016
La conoscenza della distribuzione energetica e del rateo di fluenza dei fasci X è essenziale nei controlli di qualità in medicina diagnostica, sia in termini dosimetrici che della qualità delle immagini. Gli spettri energetici possono essere utilizzati per stime accurate delle tensioni dei tubi (kVp), per la correzione di distorsioni dovute al beam-hardening e per la corretta implementazione delle nuove tecniche dual-energy [1]. In mammografia, gli spettri energetici possono essere usati per stimare l’esposizione, il kerma in aria e la distribuzione energetica della dose assorbita nei tessuti, superando gli inconvenienti dovuti alla dipendenza energetica della risposta dei dosimetri (a stat…
Direct Measurement of Mammographic X-Ray Spectra with a Digital CdTe Detection System
2012
In this work we present a detection system, based on a CdTe detector and an innovative digital pulse processing (DPP) system, for high-rate X-ray spectroscopy in mammography (1–30 keV). The DPP system performs a height and shape analysis of the detector pulses, sampled and digitized by a 14-bit, 100 MHz ADC. We show the results of the characterization of the detection system both at low and high photon counting rates by using monoenergetic X-ray sources and a nonclinical X-ray tube. The detection system exhibits excellent performance up to 830 kcps with an energy resolution of 4.5% FWHM at 22.1 keV. Direct measurements of clinical molybdenum X-ray spectra were carried out by using a pinhole…
Instrumentation for time-of-flight elastic recoil detection analysis
2016
Time-of-flight elastic recoil detection is an ion beam based method to analyze the elemental composition of thin film samples at different depths. In order to improve the mass resolution and to enable kinematic correction a position sensitive gas ionization chamber energy detector was constructed. This detector along with pre-existing timing detectors were connected to a modern fully digitizing data acquisition setup. This thesis describes the design of these instruments, including all aspects from the mechanical design of the gas ionization detector to the algorithm and software development of the digitizing acquisition setup. The performance of the system has been studied with measurements …
Clinical and radiographic diagnosis of approximal and occlusal dental caries in a low risk population
2007
Objective: Determine the agreement between visual detection, conventional radiology and digital radiology methods in the diagnosis of interproximal and occlusal caries in the posterior teeth of a group of patients with low caries prevalence. Materials and Methods: Visual, conventional radiographic and digital radiographic (Digora®, Soredex, Sweden) caries diagnosis was performed in a group of patients (n=30) of both sexes with ages ranging from 15 to 65 years (x = 34 years). Agreement was estimated by the linear weighted kappa index. Results: Kappa = 0.17 was obtained between the visual examination and the conventional radiographic examination and Kappa = 0.16 between the visual examination…
Will drawing be used to study and teach architecture in the next century?
2022
In this millennium, the use of digital tools for representation (and survey, but the subject will not be discussed here) has rapidly and deeply modified the study and the design of architecture. The rapid evolution of this mutation prompts the following question: will drawing be the language of the architect in the next century?
Metacognition in primary school: using digital rubric to promote thinking and learning
2012
Research about metacognition and its implications for learning and instruction have become a central issue in education. The call for teaching metacognitive skills is considered one of the main implications for instruction that has emerged from over three decades of research about how people learn. A method to promote the development of metacognition in pupils is to ask them to assess their own work. Pupils who assess their own work will spot areas that need improvement. A rubric is a scoring tool that lays out specific expectations. Moreover this assessment tool conveys effective feedback and promotes student learning and self-assessment. Few of the existing research efforts have focused o…
Proposed Polish Advertisement Levies – An Efficient Source of Public Income or Instruments of the Political Battle?
2022
This article analyses the bill of 2nd February 2021 on additional revenues of the National Health Fund, the National Fund for the Protection of Historical Monuments and the establishment of a Fund for the Support of Culture and National Heritage in the Media Area. The draft legislation, the announcement of which has triggered an unprecedented blackout protest in private media as well as a mass anti-government protest on the Internet, provides for the introduction of new public levies called advertisement contributions and the establishment of a new state special-purpose fund – the Fund for the Support of Culture and National Heritage in the Media Area. The aim of the article is to identify …
Professionals in value co-creation through digital healthcare services
2018
Digitization is changing the dynamics within the service sector, including healthcare. The customer access to information and new ways of interacting with the customer challenge the traditional service within healthcare featured by information asymmetry and autonomous role of professionals in decision making. Digitization introduces new service concepts and roles of service actors benefiting value cocreation among the service network. Customer actively participates in the digital service process, which sets demand for new approach, behavior and skills of the professional interacting with the customer. The present discussion around value cocreation lacks research from the service provider’s …