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Filtering by: Creator Churchill%2C David J. Remove constraint Creator: Churchill%2C David J. Degree Name Master of Science (M.S.) Remove constraint Degree Name: Master of Science (M.S.)

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  • Flow measurement and characterization in shallow geothermal systems used for downhole heat exchanger applications

    Creator:
    Churchill, David J.
    Abstract:
    This thesis reports on an investigation of flow patterns in shallow geothermal wells in Klamath Falls, Oregon, Although wells have been extensively used in the area, the exact nature of the flows in the wells has not been characterized. Flow characterization is a principal object of this study. Horizontal crossflows...
    Resource Type:
    Masters Thesis
    Full Text:
    is presented July 14, 1977 Typed by Mary Jo Stratton for David Joseph Churchill ACKNOWLEDGEMENTS

  • An evaluation of the use of tarif tables in second growth Douglas-fir

    Creator:
    Marshall, David D.
    Abstract:
    The Washington State Department of Natural Resources' Comprehensive Tree-Volume Tarif Tables are a set of preconstructed local volume tables. This can increase "on plot" efficiency since only diameters are necessary to obtain volumes after the proper table for the given diameter/height relationship is accessed. The tables are accessed and indexed...
    Resource Type:
    Masters Thesis

  • The life history of vine maple on the H. J. Andrews Experimental Forest

    Creator:
    Russel, David Wright
    Abstract:
    The objective of this study was to examine the life history of vine maple on the H. J. Andrews Experimental Forest. This study was conducted as a part of an I. B. P. general study of understory biomass and productivity. The specific objectives were to 1) estimate the contribution of...
    Resource Type:
    Masters Thesis

  • The j-Function and the Monster

    Creator:
    Scherer, Asa
    Abstract:
    The first published notion that the j-function was in any way related to the Monster came in 1979, when Conway and Norton noted in [CN79] that each coefficient in the q- expansion of the j-function could be written as a (nontrivial) integral linear combination of the dimensions of irreducible representations...
    Resource Type:
    Capstone Project
    Full Text:
    The j-Function and the Monster Asa Scherer August 16, 2010

  • Production of biologically-refractory dissolved organic carbon by natural seawater microbial populations

    Creator:
    Brophy, Jennifer Elaine
    Abstract:
    Small amounts of carbon from glucose and leucine added at natural concentrations to seawater were biologically transformed to higher molecular weight (MW) dissolved materials which persisted through six months of incubation. These materials were resistant to biological utilization: only 1 to 17% of the higher MW carbon was respired when...
    Resource Type:
    Masters Thesis
    Full Text:
    -Refractory Dissolved Organic Carbon Natural Seawater Microbial Populations Abstract Approved: David J

  • A chopper-stablized CMOS operational amplifier

    Creator:
    Ann, Seung-Han
    Abstract:
    The chopper-stabilized operational amplifier has good low frequency noise properties. Unfortunately a simple technique for simulation of the chopper-stabilized operational amplifier has not been available. This thesis describes the implementation of a differential amplifier using chopper stabilization and its circuit modeling for the SPICE simulation. This circuit has been designed...
    Resource Type:
    Masters Thesis
    Full Text:
    Chopper-Stabilized CMOS Operational Amplifier. Abstract approved: Redacted for privacy David J. Allstot

  • CMOS analog design using a digital gate array

    Creator:
    Liu, Tian-chen
    Abstract:
    The core area of a conventional CMOS digital gate array consists of only one size of NMOS device and one size of PMOS device. Both primitives have fixed minimum channel lengths, and this has significantly impeded analog applications. This work has shown that by forming series and parallel interconnections between...
    Resource Type:
    Masters Thesis
    Full Text:
    , 1988. Title: CMOS Analog Design Using A Digital Gate Array Redacted for Privacy Ddvid J. Allstot

  • Design and computer aided optimization of a fully integrated CMOS RF distributed amplifier

    Creator:
    Ballweber, Brian M.
    Abstract:
    Advancements in the sophistication and complexity of modern electronic systems are creating a need for highly integrated systems with ever higher operational frequencies. The economical demands of these systems dictate that they be implemented using low cost fabrication technologies, such as digital CMOS. One of the major challenges facing circuit...
    Resource Type:
    Masters Thesis
    Full Text:
    approved: David J. Alistot Advancements in the sophistication and complexity of modern electronic sys­

  • High accuracy CMOS switched-current ladder filters

    Creator:
    Hoei, Jung-sheng
    Abstract:
    Clock-feedthrough effects, channel-length modulation and device mismatch are the main causes of the inaccuracy of Switched-Current (SI) circuits. In this paper, these non-ideal effects are analyzed. A high-performance current mirror, namely regulated cascode current mirror, which eliminates drain voltage variation problem is introduced. By using this current mirror as a...
    Resource Type:
    Masters Thesis
    Full Text:
    approved: Redacted for Privacy David J. Allstot Clock-feedthrough effects, channel-length modulation and

  • Estimating the Influence of the Urban Heat Island Effect on Housing Prices

    Creator:
    Hossain, Lima
    Abstract:
    Using summertime housing transactions data of 3,309 parcels from multiple years in Eugene-Springfield, OR, we present a hedonic price model to estimate the influence of the urban heat island (UHI) effect on housing prices in this metropolitan area. By taking advantage of the inherent random nature of summertime weather observations,...
    Resource Type:
    Masters Thesis
    Full Text:
    David J. Lewis Using summertime housing transactions data of 3,309 parcels from multiple years in