Index Catalog // ScholarsArchive@OSU

Phosphorus physiology and environmental forcing of oceanic cyanobacteria, primarily Trichodesmium spp.

Creator:: White, Angelicque E.
Abstract:: The biological transformation of dinitrogen gas (N2) into combined forms(termed N2 fixation) by certain genera of oceanic cyanobacteria represents the largest incoming flux of nitrogen to the global ocean. As such, biological nitrogen fixation plays a significant role in the regulation of oceanic productivity and the export of carbon and...
Resource Type:: Dissertation
Full Text:: : _____________________________________________________________________ Ricardo M. Letelier Yvette H. Spitz The biological

Jet stream intraseasonal oscillations drive dominant ecosystem variations in Oregon’s summertime coastal upwelling system

Creator:: Bane, John M., Spitz, Yvette H., Letelier, Ricardo M., and Peterson, William T.
Abstract:: Summertime wind stress along the coast of the northwestern United States typically exhibits intraseasonal oscillations (ISOs) with periods from ≈15 to 40 days, as well as fluctuations on the 2- to 6-day “weather-band” and 1-day diurnal time scales. Coastal upwelling of cool, nutrient-rich water is driven by extended periods of...
Resource Type:: Article
Full Text:: ecosystem variations in Oregon’s summertime coastal upwelling system John M. Bane*†, Yvette H. Spitz

Modeling and control of a biologically inspired compliant structure

Creator:: Ray, Cody W.
Abstract:: We hypothesize that the extraordinary maneuverability and efficiency of bats in flight are in part due to the compliant nature of their wing structures. We utilize the parameters of bat bones measured by biologists to create a biologically inspired model of a flapping system consisting of a rotating hub actuator...
Resource Type:: Masters Thesis
Full Text:: gaussian (LQG) and H∞ control methodologies in terms of tracking performance and robustness to

The termination of the Basin and Range Province into a clockwise rotating region of transtension and volcanism, central Oregon

Creator:: Trench, David
Abstract:: Normal faults characterizing extensional provinces may terminate along-strike at regions of zero extension, at zones of transform faults, or at triple junctions. Termination of the Basin and Range extensional province in southeastern Oregon is thought to occur by right-lateral transform motion distributed across the Brothers Fault zone (BFZ) in central...
Resource Type:: Masters Thesis
Full Text:: graduate committee Anita Grunder, John Dilles, and Yvette Sptiz, your contributions were greatly

Shear and convective turbulence in a model of thermohaline intrusions

Creator:: Mueller, Rachael
Abstract:: Thermohaline interleaving is an important mechanism for laterally fluxing salt, heat, and nutrients between oceanic water masses. Interleaving is driven by a release of potential energy resulting from the vastly differing diffusivities of heat and salt in seawater. The flows are composed of stacked intrusions that flux more buoyant and...
Resource Type:: Masters Thesis
Full Text:: members –Jim Moum, Yvette Spitz and James Liburdy–for giving excellent feedback in the making of this

Patterns of retention and vagrancy in larval Lost River and shortnose suckers from Upper Klamath Lake, Oregon

Creator:: Reithel, Susan A.
Abstract:: Larval transport and retention of two endangered suckers were studied in a highly altered lacustrine/riverine complex. The endangered populations of Lost River sucker, Deltistes luxatus, and shortnose sucker, Chasmistes brevirostris, in Upper Klamath Lake (UKL), Oregon are the largest remnant populations of these suckers. Downstream of UKL, the Keno Impoundment...
Resource Type:: Masters Thesis
Full Text:: Markle lab. My thesis committee, R. Hughes and H. Li, provided valuable suggestions and guidance. My

Analysis and comparison of three ecosystem models

Creator:: Newberger, Priscilla A., Allen, John S., and Spitz, Yvette
Abstract:: Three-component (NPZ), four-component (NPZD), and five-component (NNPZD) nitrogen-based ecosystem models are compared. The fixed points of the zerodimensional systems, with no spatial variation except light attenuation by water, are determined. A linear-stability analysis shows that unstable steady solutions exist for all three models. Time-periodic solutions are found in these regions....
Resource Type:: Article
Full Text:: P. A. Newberger, J. S. Allen, and Y. H. Spitz College of Oceanic and Atmospheric Sciences, Oregon

Ecology of Greenland halibut (Reinhardtius hippoglossoides) during the early life stages in the Eastern Bering Sea and Aleutian Islands

Creator:: Sohn, Dongwha
Abstract:: Greenland halibut (Reinhardtius hippoglossoides) have decreased in the eastern Bering Sea and Aleutian Islands since the 1970s. The reasons behind the poor recruitment are unknown, and important knowledge gaps of the ecology of the early life stages have been identified. The objectives of thesis research were (1) to examine geographic...
Resource Type:: Masters Thesis
Full Text:: of my advising committee, I would like to thank Yvette Spitz for scientific discussions and advice

Risk-based negotiation for collaborative system design in a distributed environment

Creator:: Qiu, Yuming
Abstract:: Risk is a crucial decision factor besides traditional cost and performance during collaborative decision making in a distributed environment. Three main challenges exist: 1) stakeholders' different perspectives and/or diverse cultures can lead to inconsistent risk probability evaluations; 2) risk consequence is hard to be quantified in concrete unit; 3) risk...
Resource Type:: Dissertation

The augmented stage model of human information processing : how well do cognitive abilities drawn from the stages in the model predict concurrent task management performance?

Creator:: Nicolalde Flores, Roberto Javier
Abstract:: Research in the aviation domain, driving distractions, anesthesia administration, and nuclear power plant control rooms show that Concurrent Task Management (CTM) is a process that every human operator performs when interacting with complex environments. The need for understanding concurrent task management in a broader perspective more applicable and generalizable to...
Resource Type:: Masters Thesis
Full Text:: in the Model Predict Concurrent Task Management Performance? Abstract approved: Kenneth H. Funk, H

ScholarsArchive@OSU

Phosphorus physiology and environmental forcing of oceanic cyanobacteria, primarily Trichodesmium spp.

Jet stream intraseasonal oscillations drive dominant ecosystem variations in Oregon’s summertime coastal upwelling system

Modeling and control of a biologically inspired compliant structure

The termination of the Basin and Range Province into a clockwise rotating region of transtension and volcanism, central Oregon

Shear and convective turbulence in a model of thermohaline intrusions

Patterns of retention and vagrancy in larval Lost River and shortnose suckers from Upper Klamath Lake, Oregon

Analysis and comparison of three ecosystem models

Ecology of Greenland halibut (Reinhardtius hippoglossoides) during the early life stages in the Eastern Bering Sea and Aleutian Islands

Risk-based negotiation for collaborative system design in a distributed environment

The augmented stage model of human information processing : how well do cognitive abilities drawn from the stages in the model predict concurrent task management performance?

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