Youth participation in public policy at the local level: New lessons from Michigan municipalities

No abstract.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/64901/1/273_ftp.pd

Rebuilding the Architectural History of the Fort Vancouver Village

In the mid-19th century, the Fort Vancouver employee Village was one of the most diverse settlements on the Pacific Coast. Trappers, tradesmen, and laborers from Europe, North America, and Hawaii worked and lived within a highly stratified colonial social structure. Their homes have been the site of archaeological research for nearly 50 years, but the architectural features and artifacts have received limited attention. Inspired by an 1845 description of the Village that described houses that were "as various in form" as their occupants (Hussey 1957:218), this study examined community-level social relationships in this 19th-century fur trade community through vernacular architecture and landscape. This thesis presents the life histories and layouts of five Village houses. The architectural analysis relied on data from features, square nails, window glass, and bricks. The resulting architectural interpretations were synthesized to explore the larger vernacular landscape of the Village and investigate whether the house styles reflect processes of creolization and community development, or distinction and segregation among the Village residents. The houses all stem from a common French-Canadian architectural tradition, built by the first employees at Fort Vancouver, but the life histories also revealed that the houses were occupied (and repaired) by a second wave of employees at some time during the 1840s. A reminder that Village houses deposits may reflect multiple owners, and should not be conceptualized as the result of a single household. Finally, this thesis demonstrates that nuanced architectural data that can yet be learned from past excavation assemblages when the many nails, bricks, and window glass specimens are reanalyzed using current methods

Rebuilding the Architectural History of the Fort Vancouver Village

In the mid-19th century, the Fort Vancouver employee Village was one of the most diverse settlements on the Pacific Coast. Trappers, tradesmen, and laborers from Europe, North America, and Hawaii worked and lived within a highly stratified colonial social structure. Their homes have been the site of archaeological research for nearly 50 years, but the architectural features and artifacts have received limited attention. Inspired by an 1845 description of the Village that described houses that were as various in form as their occupants, this study examined community-level social relationships in this 19th-century fur trade community through vernacular architecture and landscape. This thesis presents the life histories and layouts of five Village houses. The architectural analysis relied on data from features, square nails, window glass, and bricks. The resulting architectural interpretations were synthesized to explore the larger vernacular landscape of the Village and investigate whether the house styles reflect processes of creolization and community development, or distinction and segregation among the Village residents. The houses all stem from a common French-Canadian architectural tradition, built by the first employees at Fort Vancouver, but the life histories also revealed that the houses were occupied (and repaired) by a second wave of employees at some time during the 1840s. A reminder that Village houses deposits may reflect multiple owners, and should not be conceptualized as the result of a single household. Finally, this thesis demonstrates that nuanced architectural data that can yet be learned from past excavation assemblages when the many nails, bricks, and window glass specimens are reanalyzed using current methods

Three-dimensional current flow in a large-scale model of the cochlea and the mechanism of amplification of sound

The mammalian inner ear uses its sensory hair cells to detect and amplify incoming sound. It is unclear whether cochlear amplification arises uniquely from a voltage-dependent mechanism (electromotility) associated with outer hair cells (OHCs) or whether other mechanisms are necessary, for the voltage response of OHCs is apparently attenuated excessively by the membrane electrical filter. The cochlea contains many thousands of hair cells organized in extensive arrays, embedded in an electrically coupled system of supporting cells. We have therefore constructed a multi-element, large-scale computational model of cochlear sound transduction to study the underlying potassium (K+) recirculation. We have included experimentally determined parameters of cochlear macromechanics, which govern sound transduction, and data on hair cells' electrical parameters including tonotopical variation in the membrane conductance of OHCs. In agreement with the experiment, the model predicts an exponential decay of extracellular longitudinal K+ current spread. In contrast to the predictions from isolated cells, it also predicts low attenuation of the OHC transmembrane receptor potential (−5 dB per decade) in the 0.2–30 kHz range. This suggests that OHC electromotility could be driven by the transmembrane potential. Furthermore, the OHC electromotility could serve as a single amplification mechanism over the entire hearing range