in this paper, we study the affect of contextual factors on quality management practices and organizations performance. the research method that led to this article is descriptive survey that we analyze gathered data with compare means statistical test. the result show that there is no significant effect of contextual factors on quality management practices and organizations performance. this r...

In this paper we analyze the current situation of education in universities, with particular reference to the European scenario. Specifically, we observe that recent evolutions, such as pervasive networking and other enabling technologies, have been dramatically changing human life, knowledge acquisition, and the way works are performed and people learn. In this societal change, universities mu...

In cellular mobile communication networks, the distribution of a customer population in a support area is often clustered. Considering this eeect in network planning is an important aspect which strongly innuences the Quality-of-Service (QoS) experienced subjectively by customers in the network. In this paper, we rst discuss two-dimensional pointprocesses and their application in mobile network...

The drastic improvement of network performance in terms of throughput and error rate coupled with the continuous increase in power of end-systems have led to the emergence of a variety of distributed Multimedia (MM) applications. The performance levels required by the distributed MM systems are expressed as Quality of Service (QoS). Network QoS support alone cannot guarantee the real-time perfo...

In response to poor quality of service (QoS), users self-regulate, i.e. they immediately release bandwidth and abandon network. However, there are studies that show users are willing to tolerate poor QoS for some time to evaluate if network performance will improve before abandoning the network. In this paper, we investigate how users willingness to wait for improved QoS may influence network a...

Key Performance Indicators (KPIs) are widely used by GSM and UMTS carriers with the aim of evaluating the network performance and the Quality of Service (QoS) delivered to users. TETRA networks are basically designed to provide telecommunication services to Public Safety & Security (PSS) organizations, thus the compliance of the QoS levels required by these clients is usually critical. Despite ...

Echocardiographic images are inherent with speckle noise which makes visual reading and analysis quite difficult. The multiplicative speckle noise masks finer details, necessary for diagnosis of abnormalities. A novel speckle reduction technique based on integration of geometric, wiener, and fuzzy filters is proposed and analyzed in this paper. The denoising applications of fuzzy filters are st...

In this paper we propose a novel image interpolation algorithm which preserves edges and keeps a natural texture of interpolated images. The algorithm is based on an idea that only pixels that belong to the same side of an edge should be used in interpolation of pixels that belong to an edge. Beside similarity-based separation of known interpolation pixels a gravity-like interpolation coefficie...

We consider the case of a multi-discipline company distributed in several sites. These sites are linked with a sufficiently dimensioned Intranet which allows a good quality of service. We use caches to increase the comfort of the users for an external connectivity to Internet. These caches are organized so as to cooperate and so to optimize performances. The objective of this proposal is to use...