conclusions in comparison with road traffic accidents on city streets, trauma patients in rtas on roads out of the city have longer pre-hospital time intervals and more severe injuries; therefore this group needs more pre-hospital resuscitation interventions. results findings of this study showed that, 75% of rtas occurred on city streets (n = 1 251). motor-car accidents were the most frequent ...

For real-time applications, task scheduling is a problem of paramount importance. Several scheduling algorithms were proposed in the literature, starting from static scheduling or cyclic executives which provide very deterministic yet inflexible behaviour, to the so called best-effort scheduling, which facilitates maximum run-time flexibility but allows only probabilistic predictions of run-tim...

in order to evaluate the effect of row space and weed management on weed population, chickpea yield and yield components, a factorial experiment based on rcbd with three replications was conducted at field research of agriculture college of lorestan university in cropping season of 2006-2007. in this research experimental factors were chickpea row spaces with four levels (15, 20, 30 and 40 cm w...

The authors’ aim was to determine the role of pre-prosthetic periodontal preparation in the life expectancy of dental bridges. Materials and methods: A retrograde screening study was performed on 58 patients with bridge restorations, subsequently divided into two groups: Group 1 involved patients who had undergone pre-prosthetic periodontal preparation and Group 2 where patients had not had any...

This report addresses the problem of jointly scheduling tasks with both hard and soft time constraints. We present new analysis which builds upon previous research into slack stealing algorithms. Our analysis determines the maximum processing time which may be stolen from hard deadline periodic or sporadic tasks, without jeopardising their timing constraints. It extends to tasks with characteri...

This paper revisits worst-case response time analysis of real-time tasks under hierarchical fixed-priority preemptive scheduling. Using an example consisting of a single server and a single hard real-time task, we show that existing worst-case response time analysis can be improved for deferrable servers and sporadic servers when a server is exclusively used for hard real-time tasks. Moreover, ...

We investigate the performance of a pre-equalised OFDM system compared to that of a conventional OFDM system in a broadband fixed wireless access (BFWA) environment. Issues such as channel estimation requirements, signal power analysis and sub-channel blocking are investigated. Computer simulation results for pre -equalised and conventional systems in a fixed wireless environment (SUI-3 channel...

Recent research into the problem of jointly scheduling tasks with both hard and soft time constraints has focused on the development of optimal slack stealing algorithms. Theoretically, these optimal algorithms offer significant performance improvements over previous bandwidth preserving algorithms such as the Sporadic Server or Extended Priority Exchange algorithm. However, there are problems ...