background: the present study aimed to investigate the effects of work shifts and mental workload on chronic fatigue among female nurses in intensive care units of selected hospitals in shiraz.   methods: the participants in this cross-sectional study were 118 female nurses working in intensive care units of three hospitals in shiraz with an average age of 304.8± years. sp (samn-perelli) mental...

and Overview Proof of work has been proposed as a mechanism to increase the cost of email so that spamming is no longer economically attractive. However, the first economic examination of proof of work argued that POW would not, in fact, work because of the difference of cost to spammers and senders of legitimate email. We illustrate that this shift in the production frontier enabled by zombies...

the creation of an intellectual work by a group of people could take different forms. sometimes, the cooperation of the members of the group takes the form of mutual consultation, in this case the work is called joint work. sometimes it is realized under the management of a real or legal person. in this case the work is a collective work. there are some occasions where the intellectual work is ...

Background and Aim: Occupational stress is one of the key factors in reducing staff productivity in organizations with physical and psychological impacts on employees. Nursing and midwifery are among the most stressful professions. Therefore, this study aimed to determine the relationship between occupational stress and work ability of midwives in Mashhad, Iran in 2011. Materials and Methods: T...