Preemptive analgesia inhibits the progression of pain caused by surgical lesions. To analyze the effect of lidocaine on postoperative pain relief, we performed compression of the right sciatic nerve in Wistar rats and observed the differences on behavior between the group that received lidocaine and the group that was not treated with the local anesthetics pre-operatively. Group 1 was not opera...

Task scheduling in a preemptive runtime environment has potential advantages over the non-preemptive case such as better processor utilization and more flexibility when scheduling tasks. Furthermore, preemptive approaches may need less runtime support (e.g. no task ordering required). In contrast to the non-preemptive case, preemptive task scheduling in a distributed system has not received muc...

While it is widely believed that preemptibility is a necessary requirement for developing real-time software, there are additional costs involved with preemptive scheduling, as compared to non-preemptive scheduling. Furthermore, in the context of fixed-priority scheduling, feasibility of a task set with nonpreemptive scheduling does not imply feasibility with preemptive scheduling (and vice-ver...

Contrary to traditional belief, we show in this paper, that for distributed systems non-preemptive scheduling can perform better than preemptive scheduling in the worst case in terms of task schedulability, under certain circumstances. We derive a worst-case delay bound for tasks scheduled using non-preemptive scheduling in a distributed system, where the task flow paths form a directed acyclic...

Algorithms for the scheduling of tasks within a parallel program onto available processors generally assume that communication only occurs at the start or end of each task, i.e., a task can only commence execution when all necessary data has been sent to it. This is termed \non-preemptive task scheduling". This paper examines the problem of the preemptive parallel program which is represented b...

Partial answers have been provided in the real-time literature to the question whether preemptive systems are better than non-preemptive systems. This question has been investigated by many authors according to several points of view and it still remains open. Compared to preemptive real-time scheduling, non-preemptive real-time scheduling and the corresponding schedulability analyses have rece...

Preemptive kidney transplantation is associated with superior outcomes. Patients who have kidney failure due to systemic lupus erythematosus (SLE) may not receive a preemptive kidney transplant because of the concern for risk of disease recurrence with shortened graft and patient survival. We identified 8001 patients in the United Network for Organ Sharing dataset who underwent kidney transplan...

Preemptive transplants are advisable in advanced stages of kidney disease. The clinical advantages of preemptive transplantation over dialysis are evident. Nevertheless, preemptive transplantations raise ethical concerns, particularly regarding the allocation of medical resources. The present article proposes some criteria for organ allocation policies regarding preemptive transplantations: cri...