Phylogenetic relationships in neotomine-peromyscine rodents (Muroidea) and a reappraisal of the dichotomy within New World Cricetinae.

http://deepblue.lib.umich.edu/bitstream/2027.42/56401/1/MP157.pd

The Cultural Context Of Perception: On Colour, Representation, And Imaging

This work investigates some of the philosophical implications of current theories of the psychophysiology of perception. First, I consider the use of recent investigations into psychophysiological theories of vision, in particular, the perception of colour, and the important role assumed here for cognition and language. I conclude that a relation between colour perception and language has not been established, that consideration of special colours is too limited, and that the experimentation to date generates misleading results. I consider the interdependence of our psychophysiological response to the entire visual array, the world present to our fovea and its surround, and the manner in which this undercuts some standing notions of the assumed role of colour. Second, I consider the importance of this interdependence for limited visual experiences, with focus specifically on pictorial arts. I challenge the widely held belief, developed in a number of distinct ways, that the perception of two-dimensional representations requires a psychological immersion in the work at the expense of awareness of the work. I further conclude that a holistic approach, demonstrated through a series of practical aesthetic considerations, produces much more satisfying and useful results

The role of genetic background on the phenotypic severity of the osteogensis imperfecta murine (oim) COLIA2 gene mutation throughout postnatal development

The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file.Title from title screen of research.pdf file (viewed on May 1, 2009)Vita.Thesis (Ph.D.) University of Missouri-Columbia 2006.Osteogenesis imperfecta (OI) is a diverse disease of type I collagen, the main structural protein in the body. It has been well documented that related individuals harboring the same OI-causing mutation can have very different clinical outcomes. However, the relationship between genotype and clinical outcome remains unclear. The goal of this study was to further examine the genotype-phenotype relationship with the long-term goal of identifying modifier genes that impact the quality of bone. Modifier genes influence clinical outcome by interacting with genes known to impact bone quality such as the type I collagen genes. As gene expression changes throughout development, we sought to determine if age-related changes in bone quality occurred. To this end, the same OI-causing mutation was studied on two genetic backgrounds, one with reduced bone strength (C57) and one with variable bone strength (outbred). Wildtype and oim animals of each strain were then analyzed at one, two and four months of age to assess bone shape and strength as well as biochemical parameters. This work showed strain related differences at all ages examined, but the presence of the oim mutation overrides these differences. Bones from oim animals of either strain have altered bone geometry and reduced biomechanical strength as compared to wildtype, with C57-oim animals having a more severe phenotype than outbred oim animals. Oim animals also had altered mineral composition and reduced amounts of type I collagen, which were strain specific. Taken together, these data indicate a role for genetic background in determining phenotypic severity, although some parameters are more affected by genetic background than others.Includes bibliographical reference

SU(3) Lattice Gauge Theory With Adjoint Action At Nonzero Temperature

We study the thermal phase diagram of pure SU(3) gauge theory with fundamental and adjoint couplings. We improve previous estimates of the position of the bulk transition line and determine the thermal deconfinement transition lines for $N_t=2,4,6,$ and 8. For $N_t > 4$ the deconfinement transition line splits cleanly away from the bulk transition line. With increasing $N_t$ the thermal deconfinement transition lines shift to increasingly weaker coupling, joining onto the bulk transition line at increasingly larger $\beta_a$ in a pattern consistent with the usual universality picture of lattice gauge theories.Comment: Talk presented by U. M. Heller at Lat94 conference, September 27 - October 1, 1994, Bielefeld, Germany. self unwrapping postscript fil