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40. Student learning teams: viewpoints of team members, teachers and an observer

Author

Dunbar Scott, Aman Cheryl, Hall Rob, Taghipour Fariborz, Maijer Daan, Berube Pierre, and Poole Gary

Subjects
Teamwork, Engineering, Medical education, Integrated engineering, business.industry, media_common.quotation_subject, Role modelling, Viewpoints, Group function, Education, Group learning, Pedagogy, ComputingMilieux_COMPUTERSANDEDUCATION, Student learning, business, Engineering (miscellaneous), media_common
Abstract

This paper presents results from a research project focused on group learning as experienced by students enrolled in a new Integrated Engineering programme (IGEN). Data from student survey responses, ethnographic observations of class meetings, and faculty commentary were collected continuously over one semester. Supporting group function and minimising dysfunction emerged as challenges for teachers, thus one research focus was the variance in teamwork function that student teams exhibited. The extent to which functional team-based processes were implicitly and explicitly modelled by teachers and student teams was also assessed. Results demonstrated that students perceived value in team projects, especially when instructors provided adequate support and appropriate role modelling.

Published
2007
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44. Computational modeling of UV photocatalytic reactors: model development, evaluation, and application.

Author

Duran, J. Esteban, Mohseni, Madjid, and Taghipour, Fariborz

Subjects
OXIDATION of water, PHOTOCATALYTIC oxidation, HYDRODYNAMICS, REYNOLDS stress, COMPUTATIONAL fluid dynamics
Abstract

A computational model for simulating the performance of immobilized photocatalytic ultraviolet (UV) reactors used for water treatment was developed, experimentally evaluated, and applied to reactor design optimization. This model integrated hydrodynamics, species mass transport, chemical reaction kinetics, and irradiance distribution within the reactor. Among different hydrodynamic models evaluated against experimental data, the laminar, Abe-Kondoh-Nagano, and Reynolds stress turbulence models showed better performance (errors <5%, 12%, and 20%, respectively) in terms of external mass transfer and surface reaction prediction capabilities at different hydrodynamic conditions. A developed finite-volume-based UV lamp emission model was able to predict, with errors of less than 5%, near- and far-field irradiance measurements. Combining all these models, the integrated computational fluid dynamics (CFD)-based model was able to successfully predict the photocatalytic degradation rate of model pollutants (benzoic acid and 2,4-D) in various configurations of annular reactors and UV lamp sizes, over a wide range of hydrodynamic conditions (350 < Re < 11,000). In addition, the integrated model was used in combination with a Taguchi design of experiments method to perform reactor design optimization. Following this approach, a base case annular reactor design was modified to obtain a 50% more efficient design. [ABSTRACT FROM AUTHOR]

Published
2015
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