This research used a quasi-experimental design with two conditions to test the impact of active learning in the context of integrated instructional design. The control condition was a traditional approach to teaching an undergraduate strategy capstone class. The intervention condition was an undergraduate strategy capstone class that was designed based on Fink's integrated instructional design principles and that incorporated an active learning element to teach students financial analysis. As part of the instructional design, the intervention representing active learning content was a set of financial trading room assignments. Though there were no differences in standardized test scores measuring total business knowledge, results showed a difference in student performance associated with financial knowledge between students who experienced the active learning intervention condition and students in the traditional control condition. Even when controlling for gender, major, and grade point average, the integrative instructional design using the trading room had an impact on student learning outcomes associated with financial knowledge.
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As a part of the welding fabrication procedure development for the next generation space shuttle external tank, aluminum-lithium wide-panel specimens were used to assess the interactions between repair weld residual stresses and external loading conditions. The detailed residual stress development in the wide panel specimens with a repair weld was analyzed using an advanced finite element procedure. External tension loading effects were then incorporated in the residual stress model to study the interactions between the residual stress field and external tensile loading. Widepanel tensile tests were also performed to extract photo strain and strain-gage results. A good agreement between the finite element and experimental results was obtained. The results demonstrate that the presence of high tensile residual stresses within a repair weld has a drastic impact on the stress/strain distribution in the wide panel specimens subjected to external loading. Its implications on structural integrity are discussed in light of the wide-panel results. The effects of post-welding mechanical treatment such as planishing were also examined.
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