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Lrfd Design Of Double Composite Box Girder Bridges, Purvik Patel
Lrfd Design Of Double Composite Box Girder Bridges, Purvik Patel
USF Tampa Graduate Theses and Dissertations
Conventional continuous steel bridges only exhibit composite behavior in the positive moment region. Similar composite action may also be achieved in the negative moment region by casting a bottom concrete slab between the points of inflection. Such a section is referred to as "double composite" since it is composite in both the positive and negative moment regions. Savings in double composite bridges arise because expensive steel is replaced by inexpensive concrete to carry compressive loads. Although double composite bridges have been designed and constructed since at least 1978 there has been limited research. Thus, current designs rely on existing provisions …
The Effects Of Naturally-Occurring Fatigue And Task Difficulty On Effort Related Cardiovascular Response, Jason Lagory
The Effects Of Naturally-Occurring Fatigue And Task Difficulty On Effort Related Cardiovascular Response, Jason Lagory
All ETDs from UAB
Wright's integrative analysis suggests that effort can be measured via cardiovascular (CV) response. In addition, the analysis breaks with tradition in suggesting that effort varies not with benefit alone, but also with the difficulty of the behavioral challenge at hand. Recent research has focused upon the effects of fatigue on effort related CV response, assuming that fatigue negatively affects perceived ability. Results have supported interactional predictions. Specifically, they have indicated higher levels of CV response among high- as compared to low fatigue participants when tasks were possible and worthwhile and the reverse response pattern when tasks were excessively difficult (given …