Search results for "Focus"
showing 10 items of 1181 documents
MAGNETIC RESONANCE IMAGING–GUIDED FOCUSED ULTRASOUND THALAMOTOMY IN PATIENT WITH TREMOR COMBINED WITH PARKINSONISM: RETREATMENT AFTER BENEFIT DECAY
2019
Background In recent years, transcranial Magnetic Resonance-guided Focused UltraSounds (tcMRgFUS) treatments for functional neurological disorders are giving a new thrust to the field of therapeutic brain lesioning. This technique has been proven safe and effective in selected patients. Here we present the case of a patient affected by tremor combined with parkinsonism who underwent a second tcMRgFUS thalamotomy because of relapsing tremor after a few months from the first tcMRgFUS treatment. Materials and Methods A 72-year-old, right-handed man, who came to our observation because of a disabling tremor affecting mainly his upper right limb and refusing any invasive surgical procedure. His …
TRANS-FUSIMO: preliminary in-vivo animal results of MR-guided focused ultrasound of liver under respiratory motion
2019
Purpose: Treating liver tumors using Focused Ultrasound (FUS) is a great challenge. Prior to human applications, an in-vivo animal trial using the TRANS-FUSIMO treatment system (TTS) is ongoing in order to evaluate the safety and the technical efficacy and efficiency of generating predefined necrotic lesions. Methods and Materials: The trial includes a crossbred porcine model of thirty large white swine (all females; 55-85Kg) that will be treated using the TTS under general anaesthesia with intubation. All treatments haven been performed under ventilator-controlled breathing and using an improved non-clinical prototype FUS transducer integrated with a 1,5T MRI unit; a set of interventional …
Enhancing Software Engineering Education in Africa through a Metaversity
2022
Software engineering education requires a new boost in African higher education, because of the high demand for professionals, caused by the fast increasing internet connections calling for meaningful applications and governmental initiatives like Fourth Industrial Revolution (4IR), and the current situation where universities graduate software engineers that cannot serve in the job markets. Inspired by the Conceive, Design, Implement and Operate (CDIO) model for engineering education and the CATI model for curriculum reform focusing on contextually relevant education in the Global South, we introduce how a complementary model for a conventional university, i.e. metaversity, can enhance sof…
The Effect of the Perceived Utility of a Management Control System with a Broad Scope on the Use of Food Waste Information and on Financial and Non-F…
2020
The purpose of this study is to analyse the effect of the perceived utility of a management control system with a broad scope on the use of food waste information and on financial and non-financial performances in restaurants. To collect data, a questionnaire was administered in Brazilian restaurants. Data from 206 restaurants were analysed with structural equation modelling, which was performed with SmartPLS software. The results reveal that a management control system of broad scope, which includes non-financial information, is oriented towards the future, and contains an external and long-term focus, assists in the use of information on food waste. In addition, the use of information abo…
La gestión en educación física. Dos modelos de gestión, el mismo individuo
2020
In the development of this writing, we intend to critically analyze the idea of management in Physical Education and problematize it with the issues of inclusion and inequality. To do this, first there is a brief etymological review of the concept of management, and then we analyze how Physical Education links management to economic and business Sciences. The analysis material used are books, manuals and articles on Physical Education management. From the analysis of this material, the second point of the work arises to explain two management models in Physical Education that we call: individual management and self-management. These models are presented as different and opposite, but in the…
La riflessione sulla pratica didattica in laboratorio dei tutor di Scienze della Formazione Primaria - Reflection on tutors’ teaching practices in Pr…
2016
Il contributo presenta un’indagine esplorativa che ha come oggetto l’organizzazione dei laboratori di Scienze della Formazione Primaria dell’Università di Palermo; in particolare ci si è prefissi di osservare nei tutor coordinatori e organizzatori di tirocinio, che li conducono insieme ai docenti, le capacità di riflessione del proprio agire nell’ambito delle specifiche attività laboratoriali. L’intento è stato quello di avviare una riflessione su ciò che è realmente necessario per condurre un laboratorio e sulle competenze che l’insegnante deve possedere, per essere efficace nel suo agire professionale. Si è scelto di utilizzare il laboratorio universitario in quanto spazio pedagogico in c…
Adverbial expressions within the legal domain: from medieval fueros to their consolidation in language
2010
Given the importance of legal language in the study of historical phraseological, it is here analyzed the presence, use and evolution of adverbial phrases in some outstanding medieval fueros, and also how a good number of adverbial expressions have transcended and developed from legal language to other contexts, owed to —at least in some cases— a clear colloquial origin (a sabiendas, por bien...). This characteristic joins many others, such as the creation of complex syntagmas derived from the union of simple expressions: de cabo a rabo, a diestro y a sinestro, a tuerto o a derecho, etc. It is therefore interesting to study the individual, particular history of each adverbial phrase found, …
A Performance Evaluation of Fusion Techniques for Spatio-Temporal Saliency Detection in Dynamic Scenes
2013
International audience; Visual saliency is an important research topic in computer vision applications, which helps to focus on regions of interest instead of processing the whole image. Detecting visual saliency in still images has been widely addressed in literature. However, visual saliency detection in videos is more complicated due to additional temporal information. A spatio-temporal saliency map is usually obtained by the fusion of a static saliency map and a dynamic saliency map. The way both maps are fused plays a critical role in the accuracy of the spatio-temporal saliency map. In this paper, we evaluate the performances of different fusion techniques on a large and diverse datas…
There is more to accommodation of the eye than simply minimizing retinal blur
2017
Eyes of children and young adults change their optical power to focus nearby objects at the retina. But does accommodation function by trial and error to minimize blur and maximize contrast as is generally accepted? Three experiments in monocular and monochromatic vision were performed under two conditions while aberrations were being corrected. In the first condition, feedback was available to the eye from both optical vergence and optical blur. In the second, feedback was only available from target blur. Accommodation was less precise for the second condition, suggesting that it is more than a trial-and-error function. Optical vergence itself seems to be an important cue for accommodation.
When virtual and real worlds coexist: Visualization and visual system affect spatial performance in augmented reality
2021
New visualization approaches are being actively developed aiming to mitigate the effect of vergence-accommodation conflict in stereoscopic augmented reality; however, high interindividual variability in spatial performance makes it difficult to predict user gain. To address this issue, we investigated the effects of consistent and inconsistent binocular and focus cues on perceptual matching in the stereoscopic environment of augmented reality using a head-mounted display that was driven in multifocal and single focal plane modes. Participants matched the distance of a real object with images projected at three viewing distances, concordant with the display focal planes when driven in the mu…