The temporal bone is a complicated bone in which diseases can necessitate surgery. Current surgery training methods in this area include human cadaver, physical and virtual models. The objective of this research is to modify a haptic system as a part of a Mixed Reality (MR) temporal bone surgery simulator. The simulator employs a haptic model of soft tissue, which is sufficiently simple not to alter the performance characteristics of the haptic system, overlaid on a physical model of the bone to include advantages of both. A gripper has been developed to retrofit a haptic device with a surgical drill. Device characteristics are explored and modified to compensate for gravity effects of the gripper on the system and to transmit the haptic interaction point to the drill tip, where the soft tissue model’s forces should be felt. This developed system should contribute in providing a more realistic surgery simulation.

There is little information comparing the impacts of bison and cattle grazing in the northern mixed-grass prairies; understanding which grazer to use for management is important. I collected data in sites grazed by bison or cattle using point counts to survey the songbird community, and habitat structure measurements. I used generalized- and non-linear mixed models to determine the relationships between grazers and habitat or songbird communities. Bison and cattle grazing caused changes in habitat structure, including decreased vegetation height and litter depth. Sprague’s pipits declined more steeply with bison grazing than with cattle grazing. 0.4 AUM/ha was an important threshold, because chestnut-collared longspurs increased in abundance at this stocking rate, and grasshopper sparrows decreased in abundance at this stocking rate. Either grazer is appropriate for managing for grassland birds. There is also an opportunity to encourage surrounding landowners to manage their lands for the benefit of wildlife.

The temporal bone is a complicated bone in which diseases can necessitate surgery. Current surgery training methods in this area include human cadaver, physical and virtual models. The objective of this research is to modify a haptic system as a part of a Mixed Reality (MR) temporal bone surgery simulator. The simulator employs a haptic model of soft tissue, which is sufficiently simple not to alter the performance characteristics of the haptic system, overlaid on a physical model of the bone to include advantages of both. A gripper has been developed to retrofit a haptic device with a surgical drill. Device characteristics are explored and modified to compensate for gravity effects of the gripper on the system and to transmit the haptic interaction point to the drill tip, where the soft tissue model’s forces should be felt. This developed system should contribute in providing a more realistic surgery simulation.

The purpose of this study was to explore the identity development of mixed race individuals in a Western Canadian context. The case study methodology was used to guide the overall procedure and participant selection. A thematic analysis was used to analyze patterns in the data. Four individuals of mixed race parentage were interviewed and five themes emerged: (a) the influence of family, (b) the influence of childhood experiences, (c) the influence of physical appearance, (d) the influence of racism, and (e) the influence of adult experiences. The detailed explorations of the participants experiences add to the Canadian literature on mixed race identity development, which provides several counselling implications and directions for future research. / Psychological Studies in Education

D.M.A. final project--Department of Music, Stanford University, June 2002. / For voice, instrumental ensemble, electronics, dance ensemble, video projection, and theatrical staging. Includes abstract, notes on instrumentation and performance requirements, instructions for performance, and formal overviews of each act. Accompanying sound and video discs contain component materials for performance. Duration: ca. 90 min.

D.M.A. final project--Department of Music, Stanford University, 2002. / Introductory materials in English include program notes, performance instructions, technical requirements, staging diagrams, and video image examples. Duration: ca. 14:30.

Thesis (M.S.)--University of Michigan, 1965.

Zugl.: Zürich, Universiẗat, Diss., 2007 u.d.T.: Strang, Thomas: Rechtsfragen rund um Multimediakunst.

Thesis (Ph. D.)--Stanford University, 1998. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.

Thesis (M.S.)--Oregon State University, 2004. / Typescript (photocopy). Includes bibliographical references (leaves 53-54). Also available on the World Wide Web.