نتایج جستجو برای: job problems

تعداد نتایج: 646541  

2017
Pascale Peters Tanja van der Lippe

This large-scale study analyses the influence of co-ordination and trust problems on employees’ access to weekly home-based teleworking from a combined perspective of transaction-cost theory and new economic-sociology. Access is more likely when additional co-ordination and control problems are smaller. Indicators of the so-called ‘telework-risk’ are ‘time sovereignty’, ‘job autonomy’, ‘job int...

2010

Flight attendants are typically characterized as being engaged in ‘emotional labour,’ which is defined as the effort, planning, and control needed to express organizationally desired emotions during interpersonal transactions. Emotional labour is always stressful and may result in negative job outcomes or health problems. Therefore, drawing on the main propositions of the JD-R model, together w...

Journal: :International archives of occupational and environmental health 2011
Jesper Kristiansen Roger Persson Jonas Björk Maria Albin Kristina Jakobsson Per-Olof Ostergren Jonas Ardö

OBJECTIVES To examine the risk of sleep problems associated with work stress (job strain, job demands, and decision authority), worries and pain and to investigate the synergistic interaction between these factors and traffic noise. METHODS Sleep problems and predictor variables were assessed in a cross-sectional public health survey with 12,093 respondents. Traffic noise levels were assessed...

Journal: :Industrial health 2013
Takashi Tatsuse Michikazu Sekine

Although studies on the association of job dissatisfaction with mental health have been conducted in the past, few studies have dealt with the complicated links connecting job stress, job dissatisfaction, and stress-related illness. This study seeks to determine how job dissatisfaction is linked to common mental health issues. This study surveyed 3,172 civil servants (2,233 men and 939 women) i...

1999
L. Barbulescu J. P. Watson L. D. Whitley A. E. Howe

Many algorithms leverage structure to solve problems. In owshop scheduling , we study two types of structure. First, for each job, we generate processing times that are similar across all machines (job-correlated problems). Then, for each machine, we generate processing times that are similar for all the jobs (machine-correlated problems). For these types of problems, we study the innu-ence of ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه بوعلی سینا - دانشکده علوم پایه 1391

abstract: in this thesis, we focus to class of convex optimization problem whose objective function is given as a linear function and a convex function of a linear transformation of the decision variables and whose feasible region is a polytope. we show that there exists an optimal solution to this class of problems on a face of the constraint polytope of feasible region. based on this, we dev...

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