The level of quality of life and health status of the population largely depends on the determinants related to occupational activity. The results of reviewed bibliography indicate a significant and growing importance of employment conditions on the quality of life and population health status in most countries of the world, especially in those with market economy. Of the evaluated determinants...

This paper considers the two-agent scheduling problems with deteriorating jobs and group technology on a single machine, where the objective is to minimize the total completion time of the first agent with the restriction that the maximum cost of the second agent cannot exceed a given upper bound. Two agents compete to perform their respective jobs on a common single machine, and each agent has...

This paper characterizes the distribution of jobs in a relational contracting model where both employed and unemployed workers compete for jobs. In equilibrium, identical firms offer a continuous distribution of contracts, with some firms offering high-wage, high-productivity contracts and others offering low-wage, low-productivity contracts. An increase in on-the-job-search affects equilibrium...

Although desktop Grid computing has been regarded as a cost-efficient computing paradigm, the system has suffered from scalability issues caused by its centralized structure. In addition, resource volatility generates system instability and performance deterioration. However, regarding the provision of a reliable and stable execution environment, resource management becomes more intricate when ...

OBJECTIVE This prospective study investigates whether changes in health risks are associated with changes in presenteeism (on-the-job productivity loss). METHOD A total of 7026 employees of a national financial services company responded to a health risk appraisal (HRA), which included a modified version of the Work Limitation Questionnaire (WLQ) in both 2002 and 2004. The association between...

BACKGROUND Individual Placement and Support (IPS) is an evidence-based work rehabilitation model with well-documented effects for people with mental illness. The model has, however, never been tested out for people with chronic pain. This pilot study aimed to investigate chronic pain patients' experiences with the IPS job support model. METHODS We recruited eight consecutive patients referred...

inconveniences. Hemodialysis (HD) patients have to spare four hours a day, three days a week regardless of individual schedules. In continuous ambulatory peritoneal dialysis patients, people must carry three, two-liter bags of dialysis fluid to perform day-time dialysis. This is not only inconvenient, but it also becomes increasingly burdensome because people get frailer1 as dialysis duration i...

This paper examines the dynamic implications of social networks for the labor market outcomes of political refugees resettled in the U.S. Using a theoretical model of job information transmission within social networks, the paper shows that the relationship between the size of a social network, the vintage of network members and labor market outcomes is non-monotonic. To test this prediction, I...

We show that the linear objective function of a search problem can be generalized to a power function and/or a logarithmic function and still be minimized by an index priority rule. We prove our result by solving the differential equation resulting from the required invariance condition, therefore, we also prove that any other generalization of this linear objective function will not lead to an...

A condition based preventive and corrective maintenance policy is proposed for a continuously operating system. The condition of the system is assumed to deteriorate with time. The model incorporates both deterioration as well as random common cause failures. The deterioration stages are modeled as discrete state processes. The system is put to random inspection to know the condition. The mean ...