The complexity of software projects is growing with the increasing complexity of software systems. The pressure to fit schedules within shorter periods of time leads to initial project schedules with a complex logic. These schedules are often highly susceptible to any subsequent delays in project activities. Thus techniques need to be developed to determine the quality of a software project sch...

BACKGROUND Exposure to shift work has been associated with negative health consequences, although the association between shift work and sickness absence remains unclear. The aim of this study is to investigate associations between cumulative exposure to shift work and sickness absence among ground staff employees of an airline company. METHODS This study used data from the MORE (Monitoring O...

review of mental health and physical health in night working nurses in golestan university of medical sciences in 2008-2009 hojjati h , tahery n , sharifniyai sh received: 14 april, 2010 accepted: 27 july, 2010 abstract background & aims: night shift schedules may have negative physical, mental, and social effects on nurses and their personal life and reduces the quality of the work. this study...

The suprachiasmatic nuclei (SCNs) of the hypothalamus contain a circadian clock that exerts profound control over rhythmic physiology and behavior. The clock consists of multiple autonomous cellular pacemakers distributed throughout the rat SCN. In response to a shift in the light schedule, the SCN rapidly changes phase to achieve the appropriate phase relationship with the shifted light schedu...

Public transport driver scheduling is a world wide problem, which is NP-hard. Although some mathematically based methods are being used in the transport industry, there is still much scope for improvements. This paper presents a novel evolutionary approach that simulates the self-adjusting process on a single schedule. Five factors characterized by fuzzy membership functions are first aggregate...

OBJECTIVE To explore whether parents' engagement in shift work affects the sleep habits of their adolescent children who attend school in two shifts. METHODS The data were drawn from an extensive survey of sleep and daytime functioning of adolescents attending school one week in the morning and the other in the afternoon. The participants were 1,386 elementary and high school students (11-18 ...

PURPOSE The performance of ergonomic analyses for workplaces is justified by the fact that safe and comfortable working conditions for employees are required. The obtained results may be used to facilitate the implementation of organizational changes in health care centres. A complex assessment of occupational load is not always possible. In this paper it is limited to one factor, constituting ...