177,140 research outputs found
A test of binaural masking. Level difference in direct hearing [Un'esperienza sulla binural masking. Level difference nell'ascolto diretto]
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An evolutionary approach for the task mapping problem
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Previous issue date: 2016-08-18Este trabalho t?m como objetivo a implementa??o de um algoritimo evolucion?rio, baseado no algoritmo de Evolu??o Diferencial (DE), para a resolu??o do problema de Mapeamento de Tarefas em Redes em Chip. Foi implementada uma varia??o do algoritmo cl?ssico de Evolu??o Diferencial, alterando-se o procedimento de opera??o gen?tica da etapa de Recombina??o, que passou a premiar individuos com base na existencia de uma condi??o indicativa de maior proximidade entre tarefas muito comunicantes. Nossa implementa??o foi avaliada a partir do uso do pacote de benchmark NASA Numerical Aerodynamic Simulation (NASA NAS) e os resultados mostraram que nossa implementa??o do DE se mostrou vi?vel e competitiva. Na compara??o com o mapeamento realizado com o framework CAFES, nossa implementa??o se mostrou superior em duas das 5 aplica??es testadas, obtendo desempenho equivalente ao CAFES em uma aplica??o e obtendo solu??es menos eficientes em duas aplica??es.This works has the goal to implement an Evolutionary Algorithm, based on the classical Differential Evolution, to solve the Task Mapping onto NoC problem. Our variant implemented a changing on the genetic operator of recombination, that started to reward individuals containing a pre-select condition that indicates when most communicating tasks are allocated near to each other onto the NoC. Our implementation was subject to the NASA Numerical Aerodynamic Simulation (NASA NAS) benchmark and results have shown that our variant is feasible and competitive. When compared to the CAFES Framework, our DE variant presented superior results on two of five tested applications, reaching equivalent quality on one of the applications and getting worst results in two of them
Oral versus Short-Term Intratympanic Prednisolone Therapy for Idiopathic Sudden Hearing Loss
No full textAppropriate Similarity Measures for Author Cocitation Analysis
No full textWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Glycerol test: considerations on the prognostic value in the long-term approach to Meniere patients
No full textMeniett therapy may avoid vestibular neurectomy in disabling Meniere's disease
No full textConclusion. In those patients for whom vestibular neurectomy has been selected due to the disabling recurrence of vertigo spells, Meniett((R)) therapy has been shown to allow avoidance of this surgical procedure in a fairly high percentage of patients with Meniere's disease (MD). Our data would also support a better result when pressure treatment is acting on MD of short duration. Objective. To test the possibility that low pressure treatment (Meniett((R))) could avoid vestibular neurectomy in patients with MD that was refractory to medical treatment. Patients and methods. The setting was a tertiary referral centre in a university hospital. Thirty-six MD patients, for whom vestibular neurectomy was indicated, underwent Meniett((R)) treatment and composed a group in which a long-term (>2 years) follow-up was achieved. Additionally, different durations of MD('young' and 'old' MD) were distinguished and analysed separately. Results. Twenty-five patients (69.4%) were treated satisfactorily by using Meniett((R)) treatment and therefore avoided vestibular neurectomy. In half of them only one cycle of treatment was necessary
Delayed loss of residual hearing in Clarion (R) cochlear implant users
No full textAbstract: Hearing threshold has been measured in a group of patients following cochlear implantation with a Clarion(R) device for the last eight years. The patients had received either a pre-curved carrier or the Hi-Focus I plus Electrode Positioner System (EPS). The assessment was carried out within the first postoperative week as well as at a later stage, between six and 87 months, post-operatively. Residual hearing thresholds were still measurable early after surgery in 24.5 per cent of the patients, without differences between the two different Clarion(R) models. However, the number of subjects with measurable hearing dropped to 16.3 per cent as observed when hearing was measured at a later stage, with an equal distribution between the two groups of patients. From this study it has been possible to observe that only a limited number of patients maintain residual hearing after Clarion(R) cochlear implantation, and that this tends to decrease further over time. Nevertheless, the performance of these patients for speech tests did not appear to be affected by deterioration of the pure-tone auditory threshold
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