Several yield criteria for glassy polymers are reviewed, and their limitations in predicting the effects of stress state, strain rate, test temperature, and molecular architecture are noted. These criteria are then generalized, so that a working model can be developed for predicting the yield respon
Work stress and problem alcohol behavior: a test of the spillover model
✍ Scribed by Leon Grunberg; Sarah Moore; Edward S. Greenberg
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 183 KB
- Volume
- 19
- Category
- Article
- ISSN
- 0894-3796
No coin nor oath required. For personal study only.
✦ Synopsis
Although previous research has found weak support for the model of stressful work `spilling over' to negative coping responses during nonwork hours, we argue that a variety of conceptual and methodological problems may partially explain the weak and inconsistent ®ndings. Two important shortcomings are inadequately speci®ed models and a failure to consider nonescapist responses to job-related stress. We therefore propose that there may be escapist (i.e. increased drinking, working through job dissatisfaction for those who believe that alcohol consumption is an eective means to reduce stress) and nonescapist (i.e. decreased drinking for those who are dissatis®ed with their jobs but do not believe alcohol is an eective coping strategy) responses to work stress. These hypotheses were tested on a sample of 972 production workers in the Paci®c northwest. Results show moderate support for the existence of both escapist and nonescapist responses to job-related stresses.
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Viscoelastic behavior at elevated temperatures of high-density polyethylene and isotactic polypropylene was investigated by using the stress relaxation method. The results are interpreted from the view of an established two-process model for stress relaxation in semicrystalline polymers. This model