One of the hot problems in grid computing is job scheduling. It is known that the job scheduling is NPcomplete, and thus the use of heuristics is the de facto approach to deal with this practice in its difficulty. The proposed is an imagination to fish swarm, job dispatcher and Visualization gridsim to execute some jobs. KEYWORD AFSA, Grid computing, scheduling, visualize, simulate, dispatcher,...

Purpose To investigate the efficiency of a discretization procedure utilizing a time-indexed mathematical optimization model for finding accurate solutions to flexible job shop scheduling problems considering objectives comprising makespan and tardiness, respectively. Design/methodology/approach A time-indexed mixed integer programming model is used to find solutions by iteratively employing ti...

In traditional scheduling problems, most literature assumes that the processing time of a job is fixed. However, there are many situations where the processing time of a job depends on the starting time or the position of the job in a sequence. In such situations, the actual processing time of a job may be more or less than its normal processing time if it is scheduled later. This phenomenon is...

From an original sample of 2454 participants free of self-reported psychological distress, 1463 workers completed a 15-month follow-up. Baseline measures included exposure to job demands, decision latitude, social support and need for recovery. Psychological distress was assessed using the General Health Questionnaire at baseline and at follow-up. The findings showed that medium and high exposu...

This study considers the job scheduling problem of minimizing the weighted waiting time variance (WWTV) of jobs. It is an extension of WTV minimization problems in which we schedule a batch of n jobs, for servicing on a single resource, in such a way that the variance of their waiting times is minimized. WWTV minimization finds its applications for job scheduling in manufacturing systems with e...

BACKGROUND There is some evidence that individual-level job loss can lead to greater alcohol consumption and problems. While other forms of economic loss were common during the recent recession, these are rarely investigated in studies of macroeconomic decline. This study examined the relationship between types of economic loss in the 2008 to 2009 recession and alcohol outcomes, and whether thi...

To examine factors influencing readiness for healthcare organizational change, 654 randomly selected hospital staff completed questionnaires measuring the logistical and occupational risks of change, ability to cope with change and to solve jobrelated problems, social support, measures of Karasek's (1979) active vs. passive job construct (job demand x decision latitude) and readiness for organi...

BACKGROUND Police work is regarded as a high-stress occupation, but so far, no nationwide study has explored the associations between work stress and health. AIMS To explore physical and mental health among Norwegian police and associations to job stress. Comparisons were made with a nationwide sample of Norwegian physicians and the general Norwegian population. METHODS Comprehensive nation...

This study considers the job scheduling problem of minimizing the Weighted Waiting Time Variance (WWTV) of jobs. It is an extension of WTV minimization problems in which we schedule a batch of n jobs, for servicing on a single resource, in such a way that the variance of their waiting times is minimized. WWTV minimization finds its applications for job scheduling in manufacturing systems with e...

In this paper we introduce a prototype job portal which uses semantically annotated job offers and applicants. In our opinion, using Semantic Web technologies substantially increase market transparency, lower transaction costs and speed up the procurement process. However adding semantics is not a panacea for everything. We identify some outstanding problems in job search using the system and o...