— Driver Assistance Systems have achieved a high level of maturity in the latest years. As an example of that, sophisticated pedestrian protection systems are already available in a number of commercial vehicles from several OEMs. However, accurate pedestrian path prediction is needed in order to go a step further in terms of safety and reliability, since… (More)
In service oriented systems, Quality of Service (QoS) is a service selection driver. Users evaluate QoS at run time to address their service invocation to the most suitable provider. Thus, QoS has a direct impact on providers' revenues. However, QoS requirements are difficult to satisfy because of the high variability of Internet workloads. Workload… (More)
References 1] Tarek F. Abdelzaher and Nina Bhatti. Web content adaptation to improve server overload behavior. The innuence of geographical and cultural issues on the cache proxy server workload.
Queueing system model has been used to study the performance of Global Memory Management Systems. We extended the AMVA solution presented in 1] to model a multi-class system where applications can have diierent access patterns, i.e., diierent page fault rates. We believe this model is more accurate since it can capture sudden changes in application behavior… (More)
is obtained into (1) how cost-effective proxy servers are in multicast streaming systems, (2) the most effective streaming protocol, and (3) the optimal proxy content, as a function of the system configuration and workload. A key result is that proxy servers are only cost effective if (a) the origin server does not have a multicast capability, or (b) the… (More)