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Filtering by: Date issued sim 1993-08-19 Rights Statement Copyright Not Evaluated

A low cost AC motor drive for battery powered applications

Creator:

Wiley, Brian

Abstract:

Environmental concerns have renewed the interest in electric vehicles. To gain widespread use, electric vehicles will also have to offer good performance and be reasonably priced. AC drive systems using modern semiconductors can provide efficient operation at the required power levels, but their cost at present is still too high....

Resource Type:

Masters Thesis
Influence of channel constraint on primary production, preiphyton biomass, and macroinvertebrate biomass in streams of the Oregon Coast Range

Creator:

Zucker, Steven J.

Abstract:

Differences in primary production and periphyton and macroinvertebrate biomass between pairs of constrained (valley floor width of less than twice the active channel width) and unconstrained reaches were investigated in Elk River and four tributaries in southwest Oregon. In August 1991, macroinvertebrates were sampled from individual cobbles, and rocks were...

Resource Type:

Masters Thesis
The design of a postfilter for a delta-sigma digital-to-analog converter

Creator:

Chen, Chao-Yin

Resource Type:

Masters Thesis
Virus resistance in transgenic plants expressing translatable and untranslatable forms of the tobacco etch virus coat protein gene sequence

Creator:

Lindbo, John A.

Resource Type:

Dissertation
Seasonal variability of zooplankton off the California coast : box model approach

Creator:

Barnard, Andrew Heath

Abstract:

In an effort to elucidate the mechanism responsible for large-scale zooplankton variability in the California Current, zooplankton biomass and hydrographic data from the California Cooperative Fisheries Investigation data set and wind data from Fleet Numerical Oceanography Center model analyses have been used to construct a box model biomass budget. The...

Resource Type:

Masters Thesis