Resource-constrained project scheduling with activity pre-emption assumes that activities are allowed to be interrupted and restarted later in the schedule at no extra cost. In the current paper, we extend this pre-emptive scheduling problem with setup times between activity interruptions and the possibility to fast track pre-emptive subparts of activities. The contribution of the paper is twof...

Peter Carruthers, the scientist, was a man of remarkable mathematical and physical culture. He had also something which is less common now a days, namely a profound physical intuition which guided him to approach in an original way the most interesting problems at a given moment and in this way he became a guide also for others. Multiparticle dynamics being by definition a many-body problem, it...

background and aims: internet seems to be increasingly involved a major part of the daily lives of population. in recent years, many reports have confirmed the huge number of internet users worldwide. this article is seeking to explore the factors contributing to the tendency to internet in students of shahrekord university of medical sciences (skums) and aimed to recommend some preventive stra...

Abstract Background and Aims Pre-emptive therapy, screen for treat asymptomatic cytomegalovirus (CMV) viremia, is an important preventive strategy CMV disease in kidney transplant (KT) recipients. Oral valganciclovir the most commonly used as strategy. However, optimal dose treatment duration of remains elusive. Method We retrospectively evaluated efficacy toxicity low-dose oral (450 mg twice d...