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Filtering by: Advisor Johnson, Richard E. Remove constraint Advisor: Johnson, Richard E. Degree Level Doctoral Remove constraint Degree Level: Doctoral

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  • Shear wave attenuation in unconsolidated laboratory sediments

    Creator:
    Brunson, Burlie A.
    Abstract:
    Shear wave attenuation measurements were made using ceramic bimorph transducers to excite transverse vibrations in a cylindrical column of unconsolidated sediment. Three different water-saturated sediments were used in an attempt to determine the effects of grain shape and sorting on the frequency dependence of attenuation. The mean grain size of...
    Resource Type:
    Dissertation
    Full Text:
    committee chairman, Dr. Richard K. Johnson. During the last two years, I have had the plea- sure

  • Dietary compostion and nutritional status of sheep and goats grazing two rangeland types in Baluchistan, Pakistan

    Creator:
    Wahid, Abdul
    Abstract:
    The main objective of this research was to assess the nutritional status of sheep and goats grazing two rangeland types in Baluchistan, Pakistan. These types were Artemisia maritima/Haloxylon griffithii association represented by the Zarchi Field Station and Cymbopogon shoenanthus, found at the Tomagh Field Station. Seasonal above ground biomass production...
    Resource Type:
    Dissertation
    Full Text:
    guidance filled the gaps in my professional personality. Dr. D. E. Johnson, my major professor, is a

  • Identification of restoration potential on southwestern Oregon rangelands

    Creator:
    Barrington, Mack R.
    Abstract:
    The objectives of this research were to 1) evaluate the establishment and peak standing crop of Berber Orchardgrass (Dactylis glomerata var. "Berber"), Palestine Orchardgrass (Dactylis glomerata var. "Palestine"), and Sheep Fescue (Festuca ovina var. "Covar") ; 2) to assess establishment and production changes resulting from environmental gradients (elevation, slope, aspect,...
    Resource Type:
    Dissertation
    Full Text:
    . Douglas Johnson for his unfailing support and guidance through the dark before the dawn. Thanks Doug for

  • Cattle behavior and distribution on the San Joaquin Experimental Range in the foothills of central California

    Creator:
    Harris, Norman Rex
    Abstract:
    Small herds of cows were observed and spatially mapped over continuous twenty-four hour periods. Treatments were implemented that investigated the effect of water site and supplementation on animal distribution patterns. A series of six observation periods constituted each observation series. Observation series were repeated winter (January) and summer (July) for...
    Resource Type:
    Dissertation
    Full Text:
    manuscripts. Dr. Douglas E. Johnson helped design and establish the experiment, observe animals, analyze data

  • Morphological variability and seed dormancy of Amelanchier (Rosaceae) grown in Oaxaca, Mexico

    Creator:
    Cruz-Cruz, Efrain
    Abstract:
    The purpose of this research was to determine whether hybridization between Amelanchier denticulata. (H.B.K.) Koch and Amelanchier nervosa (Decaisne) StandL occurs in Oaxaca, Mexico, and to evaluate components of yield and germination characteristics and seed dormancy of Amelanchier denticulata. Amelanchier nervosa and Amelanchier denticulata samples and morphological characters were used...
    Resource Type:
    Dissertation
    Full Text:
    . Douglas E. Johnson for his insight and advise through the process ofmy studies; especially, for his time

  • An ontology-based system for representation and diagnosis of electrocardiogram (ECG) data

    Creator:
    Dendamrongvit, Thidarat
    Abstract:
    Electrocardiogram (ECG) data are stored and analyzed in different formats, devices, and computer platforms. There is a need to have an independent platform to support ECG processes among different resources for the purposes of improving the quality of health care and proliferating the results from research. Currently, ECG devices are...
    Resource Type:
    Dissertation
    Full Text:
    : Richard E. Billo Electrocardiogram (ECG) data are stored and analyzed in different formats, devices, and

  • Photosynthesis of conifers : influential factors and potentials for remote sensing

    Creator:
    Yoder, Barbara J.
    Abstract:
    Remote sensing offers the potential for monitoring photosynthesis over large temporal and spatial scales. The purpose of this thesis is to provide information that will help to develop methods to predict photosynthesis from the light reflected by canopies. The studies focused on a simple model of canopy photosynthetic potential: Acanopy...
    Resource Type:
    Dissertation