Progettazione e costruzione di una scheda di espansione per un prototipo del sistema di acquisizione dati dell'esperimento ATLAS in HL-LHC

Questa tesi illustra lo sviluppo di una scheda di espansione di memoria per il sistema di acquisizione dati PiLUP e le problematiche riscontrate durante la sua creazione. La scheda PiLUP, che è stata progettata e realizzata nei Laboratori di elettronica di Bologna dell'INFN e pressoil Dipartimento di Fisica e Astronomia l'Università di Bologna, è in grado di gestire con rapidità ed efficienza i dati che saranno prodotti dal nuovo detector (Inner Traker) di ATLAS; questo sarà installato al termine del Run 3 di LHC, quando saranno avviate le operazioni di potenziamento dell'acceleratore e di aumento della sua luminosità. La scheda PiLUP, che include due FPGA in configurazione master-slave, è dotata di grande flessibilità ma è carente di memoria necessaria a supportare i software richiesti. Per risolvere questo problema è stata progettata, disegnata tramite un software CAD e realizzata, sempre presso i Laboratori di Bologna, una PCB dotata della componentistica necessaria per leggere memorie FLASH con protocollo microSD, in modo da espandere considerevolmente le capacità della scheda PiLUP

Mobile information access in the real world: A story of three wireless devices

This is the post-print version of the Article. The official published version can be accessed from the link below - Copyright @ 2008 ElsevierThe importance of the user perspective to the wireless information access experience cannot be understated: simply put, users will not indulge in devices that are perceived to be difficult to use and in technologies that do not offer quality infotainment – combined information and entertainment – content. In this paper, we investigate the impact that mobile devices have on the user wireless infotainment access experience in practice. To this end, we have undertaken an empirical study placed in a ‘real-world’ setting, in which participants undertook typical infotainment access tasks on three different wireless-enabled mobile devices: a laptop, a personal digital assistant and a head mounted display device. Results show that, with the exception of participants’ level of self-consciousness when using such devices in public environments, the user wireless information access experience is generally unaffected by device type. Location was shown, though, to be a significant factor when users engage in tasks such as listening to online music or navigation. Whilst the interaction between device and environment was found to influence entertainment-related tasks in our experiments, the informational ones were not affected. However, the interaction effects between device and user type was found to affect both types of tasks. Lastly, a user’s particular computing experience was shown to influence the perceived ease of wireless information access only in the case of online searching, irrespective of whether this is done for primarily informational purposes or entertainment ones

L'efficacia della comunicazione: un'indagine esplorativa

The purpose of this study is to identify which models and tools companies use to mesure communication effectiveness. An empirical investigation was carried out vith exploratory purposes involving 30 companies which invest in communication activities at least one million euro

Autoimmune Atrophic Gastritis: The Role of miRNA in Relation to Helicobacter Pylori Infection

IntroductionMicroRNAs (miRNAs) have been proposed as diagnostic markers, biomarkers of neoplastic progression, and possible therapeutic targets in several immune-mediated diseases. We aimed to analyze the expression profile of selected miRNAs (miR21, miR142, miR223, miR155) in patients with autoimmune atrophic gastritis (AAG), patients with non-autoimmune multifocal atrophic gastritis (MAG), and healthy control subjects (HC).Materials and methodsA total of 103 patients with AAG were consecutively recruited for this study among those attending our gastroenterology outpatient clinic. Participating patients were divided into two groups: primary, not Helicobacter pylori (HP)-associated related AAG (n=57, P-AAG) and HP-associated AAG (n=46, HP-AAG); this subgroup included HP-positive patients, patients with previously reported HP infection, and patients harboring antral atrophy, considered as a stigma of HP infection. We also included 20 sex-age-matched MAG patients and 10 HC. Upper endoscopy with gastric biopsies were performed on each AAG and MAG patient. Circulating levels of miR21-5p, miR142-3p, miR223-3p, and miR155-5p were measured by RT-PCR in all groups.ResultsMiR-21 was over-expressed in P-AAG (p=0.02), HP-AAG (p = 0.04), and MAG (p=0.03) compared with HC. By contrast, miR-142 was more expressed in HC than in HP-AAG (p=0.04) and MAG (p=0.03). MiR-155 showed no significant differences among the four subgroups, while, unexpectedly, miR-223 was overexpressed in HC compared to P-AAG (p=0.01), HP-AAG (p=0.003), and MAG (p<0.001), and was higher in P-AAG than in MAG (p=0.05).ConclusionsMiR-21 was over-expressed in patients with gastric precancerous conditions irrespective of etiology, while in the same subgroups miR-142 and miR-223 were under-expressed compared to healthy controls. Controlling miRNAs up- or downregulation could lead to a breakthrough in treating chronic autoimmune diseases and potentially interfere with the progression to cancer

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