Julie Kimsal - Academia.edu (original) (raw)
Papers by Julie Kimsal
2006 GSW Proceedings
The authors were intrigued by the different ways and methods advocated in the engineering educati... more The authors were intrigued by the different ways and methods advocated in the engineering education literature to promote active learning in a class over passive learning. The two authors were in charge of teaching a sophomore-level course in design and manufacturing at the University of New Mexico. They have combined (1) group work, (2) student teaching and presentations, (3) pop quizzes, (4) peer rating of team members and non-team members, and (5) problem-based learning or PBL in an effort to maximize the active learning involved in the class. All of the aforementioned methods have been tried, typically individually, in previous educational studies and were recommended for teachers. An exception is the peer rating of nonteam members, which is presented for the first time here and is conducted via a student-filled form provided in the Appendix. The educational experience, along with statistical data, from this unique combination is discussed herein along with any recommendations or lessons learned.
2006 GSW Proceedings
Problem-Based Learning (PBL) has been hailed in education literature as the epitome of active lea... more Problem-Based Learning (PBL) has been hailed in education literature as the epitome of active learning 1-4. Driven with this conviction, the authors introduced a hands-on, plus computer, project in a sophomore-level design and manufacturing course. Here, the authors present their experience with this Problem-Based Learning experiment. They provide an evaluation of the educational experiment and any lessons learned or future recommendations. Depending on available resources, interested design and/or manufacturing teachers can adapt a similar project description for their own courses.
International Journal of Biomedical Engineering and Technology, 2015
This study investigates, through finite-element analysis, different plate-screw fixation systems ... more This study investigates, through finite-element analysis, different plate-screw fixation systems used for medial opening proximal tibial osteotomies (locking or non-locking with or without a medial spacer). Sulzer stainless steel non-locking without spacer, Synthes titanium locking without spacer, Smith and Nephew custom titanium locking with a wedge spacer and Arthrex stainless steel non-locking with a wedge spacer fixation systems were modelled and compared. All fixation systems were tested under static loading of 889 N applied evenly over the proximal tibia particular surface. The areas of highest stress experienced in the bone and the plate/screw interface were analysed. Tendency of the osteotomy wedge to close under loading for each fixation system was analysed. The numerical results suggest the titanium locking plate with wedge spacer block outperforms the others by achieving lower stresses (incurred by the fixation system and bone) and loss of correction. Locking screw mechanisms and wedge spacer blocks appear advantageous.
Journal of Computational and Theoretical Nanoscience, 2008
... 100,000 iterations were computed at a temperature of 298 degrees Kelvin, pressure of 1 atmosp... more ... 100,000 iterations were computed at a temperature of 298 degrees Kelvin, pressure of 1 atmosphere, with a time step of 1.0 femtosecond. ... 97, 1 (2005). 3. SY Mensah, FKA Allotey, NGMensah, and G. Nkrumah, Journal of Physics–Condensed Matter 13, 5653 (2001). J. Comput. ...
International Journal of Experimental and Computational Biomechanics, 2009
Paediatric spinal deformities pose much difficulty for orthopaedic surgeons. Halo-gravity tractio... more Paediatric spinal deformities pose much difficulty for orthopaedic surgeons. Halo-gravity traction using threaded stainless steel pins with a graphite halo device mounted to the skull has been successful, but is invasive and must be tailored specifically to each individual patient. Experimental and clinical testing in paediatrics has been performed to evaluate the halo-gravity traction method of correction to optimise required number of pins, and pin-torque loading parameters, with differing results. For paediatrics, surgeons do not apply loading exceeding 50% of a child's body weight. The current study experiments with six and ten pin halo configurations under applied torque loading of 226, 452 and 678 Newton-millimetre (2, 4 and 6 inch-pound) to determine failure loading of the halo system. The results indicate that the failure load of the sawbone skulls far exceeds the average weight of a paediatric patient.
Journal of Oral and Maxillofacial Surgery, 2011
Clinical evidence has suggested that minimal fixation can reduce complications of mandibular angl... more Clinical evidence has suggested that minimal fixation can reduce complications of mandibular angle fractures, though no detailed biomechanical model has yet explored this unique and somewhat unexpected finding. The current study uses finite element analysis to biomechanically evaluate different fixation schemes used to fixate mandibular angle fractures. Three fixation scenarios were considered: a single tension band at the superior mandibular border, a single bicortical angle compression plate at the inferior border and the tension band and bicortical plate used together. The dual plate model incurred the lowest von Mises stresses in the plates and the lowest principal strain in the callus. The tension band model observed the highest plate and screw von Mises stresses, but had fracture-site callus strain near to that of the dual plate model. The bicortical angle compression plate model observed the highest fracture-site callus strain. The results from this study support the use of the single tension band configuration as a less invasive fixation approach to fractures of the mandibular angle. This is the first known study to explore and confirm clinical observations of angle fracture fixation outcomes with a detailed biomechanical modeling methodology.
2006 GSW Proceedings
The authors were intrigued by the different ways and methods advocated in the engineering educati... more The authors were intrigued by the different ways and methods advocated in the engineering education literature to promote active learning in a class over passive learning. The two authors were in charge of teaching a sophomore-level course in design and manufacturing at the University of New Mexico. They have combined (1) group work, (2) student teaching and presentations, (3) pop quizzes, (4) peer rating of team members and non-team members, and (5) problem-based learning or PBL in an effort to maximize the active learning involved in the class. All of the aforementioned methods have been tried, typically individually, in previous educational studies and were recommended for teachers. An exception is the peer rating of nonteam members, which is presented for the first time here and is conducted via a student-filled form provided in the Appendix. The educational experience, along with statistical data, from this unique combination is discussed herein along with any recommendations or lessons learned.
2006 GSW Proceedings
Problem-Based Learning (PBL) has been hailed in education literature as the epitome of active lea... more Problem-Based Learning (PBL) has been hailed in education literature as the epitome of active learning 1-4. Driven with this conviction, the authors introduced a hands-on, plus computer, project in a sophomore-level design and manufacturing course. Here, the authors present their experience with this Problem-Based Learning experiment. They provide an evaluation of the educational experiment and any lessons learned or future recommendations. Depending on available resources, interested design and/or manufacturing teachers can adapt a similar project description for their own courses.
International Journal of Biomedical Engineering and Technology, 2015
This study investigates, through finite-element analysis, different plate-screw fixation systems ... more This study investigates, through finite-element analysis, different plate-screw fixation systems used for medial opening proximal tibial osteotomies (locking or non-locking with or without a medial spacer). Sulzer stainless steel non-locking without spacer, Synthes titanium locking without spacer, Smith and Nephew custom titanium locking with a wedge spacer and Arthrex stainless steel non-locking with a wedge spacer fixation systems were modelled and compared. All fixation systems were tested under static loading of 889 N applied evenly over the proximal tibia particular surface. The areas of highest stress experienced in the bone and the plate/screw interface were analysed. Tendency of the osteotomy wedge to close under loading for each fixation system was analysed. The numerical results suggest the titanium locking plate with wedge spacer block outperforms the others by achieving lower stresses (incurred by the fixation system and bone) and loss of correction. Locking screw mechanisms and wedge spacer blocks appear advantageous.
Journal of Computational and Theoretical Nanoscience, 2008
... 100,000 iterations were computed at a temperature of 298 degrees Kelvin, pressure of 1 atmosp... more ... 100,000 iterations were computed at a temperature of 298 degrees Kelvin, pressure of 1 atmosphere, with a time step of 1.0 femtosecond. ... 97, 1 (2005). 3. SY Mensah, FKA Allotey, NGMensah, and G. Nkrumah, Journal of Physics–Condensed Matter 13, 5653 (2001). J. Comput. ...
International Journal of Experimental and Computational Biomechanics, 2009
Paediatric spinal deformities pose much difficulty for orthopaedic surgeons. Halo-gravity tractio... more Paediatric spinal deformities pose much difficulty for orthopaedic surgeons. Halo-gravity traction using threaded stainless steel pins with a graphite halo device mounted to the skull has been successful, but is invasive and must be tailored specifically to each individual patient. Experimental and clinical testing in paediatrics has been performed to evaluate the halo-gravity traction method of correction to optimise required number of pins, and pin-torque loading parameters, with differing results. For paediatrics, surgeons do not apply loading exceeding 50% of a child's body weight. The current study experiments with six and ten pin halo configurations under applied torque loading of 226, 452 and 678 Newton-millimetre (2, 4 and 6 inch-pound) to determine failure loading of the halo system. The results indicate that the failure load of the sawbone skulls far exceeds the average weight of a paediatric patient.
Journal of Oral and Maxillofacial Surgery, 2011
Clinical evidence has suggested that minimal fixation can reduce complications of mandibular angl... more Clinical evidence has suggested that minimal fixation can reduce complications of mandibular angle fractures, though no detailed biomechanical model has yet explored this unique and somewhat unexpected finding. The current study uses finite element analysis to biomechanically evaluate different fixation schemes used to fixate mandibular angle fractures. Three fixation scenarios were considered: a single tension band at the superior mandibular border, a single bicortical angle compression plate at the inferior border and the tension band and bicortical plate used together. The dual plate model incurred the lowest von Mises stresses in the plates and the lowest principal strain in the callus. The tension band model observed the highest plate and screw von Mises stresses, but had fracture-site callus strain near to that of the dual plate model. The bicortical angle compression plate model observed the highest fracture-site callus strain. The results from this study support the use of the single tension band configuration as a less invasive fixation approach to fractures of the mandibular angle. This is the first known study to explore and confirm clinical observations of angle fracture fixation outcomes with a detailed biomechanical modeling methodology.