The speech reception threshold (SRT) is the noise level at which the speech recognition rate of a test person is 50%. SRT measurement is relevant for patient screening, psychoacoustic research and algorithm development in hearing aids and cochlear implants. In this paper, we report on our efforts to automate SRT measurement using an automatic speech recognizer. During a test, sentences are pres...

Several distributed mutual exclusion algorithms define the order in which requests are satisfied based on the priorities assigned to requests. These algorithms are very useful for real-time applications ones or those where priority is associated to a quality of service requirement. However, priority based strategies may result in starvation problems where high priority requests forever prevent ...

This paper deals with the performance analysis of two prioritized handoff schemes for mobile cellular networks in which handoff attempts finding all channels busy are queued for a maximum time. Fixed channel assignment is assumed. In the first prioritized handoff scheme considered, handoff attempts are queued according to the first-in–first-out (FIFO) policy. Conversely, the second scheme resor...

We consider a single stage multi-product manufacturing facility producing a large number of end-products for delivery within a service constraint for the customer lead-time. The manufacturing facility is modeled as a multi-product, multi-priority queuing system. In order to reduce inventory costs, an efficient priority allocation between items consists in producing some items according to a Mak...

Latency performance is enhanced in Network-on-Chips using a variety of techniques, among which virtual channel approach is one of the most widely used. With virtual channels, high priority packets can pre-empt low priority packets but this can cause starvation of low priority packets which can be un-necessary in many situations. With this paper we present an improvement on the classical virtual...

Call admission protocols play a central role in determining both the performance of any network, and the revenue of the network. The call admission protocol must decide either to accept the call or reject it, Thus having an impact on both the quality of calls and the network revenues. The call admission protocol must deal with multiple classes of calls having different requirements, requesting ...

The kinematic and algorithmic singularities in controlling robotic manipulators have been investigated intensively because they are not predictable or difficult to avoid. The problem with handling these singularities is an unnecessary performance reduction in non-singular region and the difficulty in performance tuning. In this paper, we propose a method of avoiding kinematic and algorithmic si...

Long-range dependence is regarded as a fundamental property of network traffic. Using an original approach, we incorporate this property in a traffic control mechanism for elastic connections that can adapt to the instantaneous network load in a differentiated services-type framework. In this scenario, the network makes predictions of bandwidth requirements of the high-priority traffic and retu...

The priority queue is a very important and widely used data structure in computer science, with a variety of applications including Dijkstra’s Single Source Shortest Path algorithm on sparse graph types. This study presents the experimental results of a variety of priority queues. The focus of the experiments is to measure the speed and performance of highly specialized priority queues in out-o...

The increasing number of portable computers, combined with the growth of wireless services, makes supporting Internet mobility important. Since a mobile node always changes its point of attachment to the Internet, it may cross a cell boundary during data transmission process. Packets sequence disruption during handover procedure may result in decreasing network performance especially in higher ...