Search Constraints

Start Over
Filtering by: Creator Ohm, David R. Remove constraint Creator: Ohm, David R.

Search Results

  • Enhanced inverse synthetic aperture radar imagery using 2-D spectral estimation

    Creator:
    Ohm, David R.
    Abstract:
    This research focused on the use of classical and modern two-dimensional spectral estimation techniques for enhancing inverse synthetic aperture radar (ISAR) imagery. 2-D Classical spectral estimation methods and 2-D modern parametric and non-parametric spectral estimation methods are applied to simulated and real data sets in order to achieve both range...
    Resource Type:
    Masters Thesis
    Full Text:
    THESIS OF David R. Ohm for the degree of Master of Science in Electrical and Computer Engineering

  • Kinematic and cyclostationary parameter estimation for co-channel emitter location applications

    Creator:
    Ohm, David R.
    Abstract:
    The problem of locating a signal source, or an emitter, has many civilian and military applications, such as communication regulations enforcement, military reconnaissance, and search-and-rescue operations. Many of the most widely used emitter location methods rely on the accurate and robust estimation of the differential time delay, or time-difference-of-arrival (TDOA),...
    Resource Type:
    Dissertation
    Full Text:
    AN ABSTRACT OF THE DISSERTATION OF David R. Ohm for the

  • The evolutionary stability of partial migration

    Creator:
    Ohms, Haley A.
    Abstract:
    Natural selection, in its most basic form, is described as a process in which traitsincrease or decrease in frequency depending on their fitness, and only the trait withthe highest fitness will remain in the population. Yet, populations rarely have asingle `optimal' trait. The way natural selection maintains this observed variationwithin...
    Resource Type:
    Dissertation
    Full Text:
    Evolutionary Stability of Partial Migration Abstract approved: David A. Lytle Natural selection, in its most

  • The influence of sex, migration distance, and latitude on expression of anadromy in Oncorhynchus mykiss

    Creator:
    Ohms, Haley
    Abstract:
    The evolution and maintenance of multiple phenotypes within populations is an interesting evolutionary and ecological question, and is becoming increasingly important for the restoration and conservation of partially migratory species. In particular, why individuals adopt a particular phenotype has been the focus of numerous research efforts. In the partially migratory...
    Resource Type:
    Masters Thesis
    Full Text:
    , Tom Desgroseillier, Mike Briggs, Chris Beasley, Craig Rabe, and David Love. This would not have been

  • Parker, David Bill.pdf

    Creator:
    Parker, David Bill
    Abstract:
    Data from the southern Cascade Mountains of Oregon has been collected for application in computer analysis of snowfields. Vegetation type, canopy cover, slope, aspect, insolation, and snowfield ground truth delineation are given consideration. In addition, a procedure for transferral of data onto Landsat imagery was derived.
    Full Text:
    EXTENT; SOUTHERN CASCADE MOUNTAINS, OREGON by DAVID BILL PARKER A RESE;RCH PAPER suiitted to THE

  • Ji[David]XiuleiChemistryAmbientHydrolysisDeposition.pdf

    Creator:
    Wang, Xingfeng, Raju, Vadivukarasi, Luo, Wei, Wang, Bao, Stickle, William F., and Ji, Xiulei
    Abstract:
    Despite the considerable advances of deposition technologies, it remains a significant challenge to form conformal deposition on surface of nanoporous carbons. Here, we introduce a new ambient hydrolysis deposition method that employs and controls pre-adsorbed water vapor on nanoporous carbons to define the deposition of TiO₂. We converted the deposited...
    Full Text:
    Pat., 6893550, 2005. 7 V. P. Menon, C. R. Martin, Anal. Chem. 1995, 67, 1920-1928. 8 M

  • Ji[David]XiuleiChemistrySuperiorCathodeSodium.pdf

    Creator:
    Raju, Vadivukarasi, Rains, Jordan, Gates, Cooper, Luo, Wei, Wang, Xingfeng, Stickle, William F., Stucky, Galen D., and Ji, Xiulei
    Abstract:
    We, for the first time, demonstrate that orthorhombic V₂O₅ can exhibit superior electrochemical performance in sodium ion batteries when uniformly coated inside nanoporous carbon. The encapsulated V₂O₅ shows a specific capacity as high as 276 mAh/g, while the whole nanocomposite exhibits a capacity of 170 mAh/g. The V₂O₅/C composite was...
    Full Text:
    . [8] Berthelot, R.; Carlier, D.; Delmas, C. Nat. Mater. 2011, 10, 74-80. [9] Xia, X.; Dahn, J. R

  • Web_Supplement_Files_Ch3.R

    Creator:
    Dail, David (David Andrew)
    Abstract:
    Obtaining accurate estimates of animal abundance is made difficult by the fact that most animal species are detected imperfectly. Early attempts at building likelihood models that account for unknown detection probability impose a simplifying assumption unrealistic for many populations, however: no births, deaths, migration or emigration can occur in the...

  • Supplement_Files_Ch4.R

    Creator:
    Dail, David (David Andrew)
    Abstract:
    Obtaining accurate estimates of animal abundance is made difficult by the fact that most animal species are detected imperfectly. Early attempts at building likelihood models that account for unknown detection probability impose a simplifying assumption unrealistic for many populations, however: no births, deaths, migration or emigration can occur in the...

  • Compatible Discretizations for Maxwell's Equations with General Constitutive Laws

    Creator:
    McGregor, D. A.
    Abstract:
    In this thesis we construct compatible discretizations of Maxwell's equations. We use the term compatible to describe numerical methods for Maxwell's equations which obey many properties of vector Calculus in a discrete setting. Compatible discretizations preserve the exterior Calculus ensuring that the divergence of the curl and the curl of...
    Resource Type:
    Dissertation
    Full Text:
    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171 LIST OF FIGURES (Continued) Figure Page 6.3 Here we show the maximum of |β1| when r = ib, min