Index Catalog // ScholarsArchive@OSU

Little Ice Age climate and oceanic conditions of the Ross Sea, Antarctica from a coastal ice core record

Creator:: Rhodes, R. H., Bertler, N. A. N., Baker, J. A., Steen-Larsen, H. C., Sneed, S. B., Morgenstern, U., and Johnsen, S. J.
Abstract:: Increasing paleoclimatic evidence suggests that the Little Ice Age (LIA) was a global climate change event. Understanding the forcings and associated climate system feedbacks of the LIA is made difficult by the scarcity of Southern Hemisphere paleoclimate records. We use a new glaciochemical record of a coastal ice core from...
Resource Type:: Article
Full Text:: ,*, N. A. N. Bertler1,2, J. A. Baker3, H. C. Steen-Larsen4, S. B. Sneed5, U. Morgenstern2, and S. J

Performance of some tests for bivariate independence, interchangeability, and equality of distributions of ratios

Creator:: Ferguson, Nancy Lo
Abstract:: The purpose of this thesis is to derive and compare asymptotic performances of certain tests of independence, interchangeability and equality of the distributions of_ratios Y/X for positive variates and Y with joint c.d.f. H(x,y) of particular forms. Three bivariate families, Morgenstern, Plackett, and Moran, are considered which permit marginal c.d.f.'s...
Resource Type:: Dissertation
Full Text:: particular forms. Three bivariate families, Morgenstern, Plackett, and Moran, are considered which per- mit

Use of change-point detection for friction–velocity threshold evaluation in eddy-covariance studies

Creator:: Barr, A. G., Richardson, A. D., Hollinger, D. Y., Papale, D., Arain, M. A., Black, T. A., Bohrer, G., Dragoni, D., Fischer, M. L., Gu, L., Law, B. E., Margolis, H. A., McCaughey, J. H., Munger, J. W., Oechel, W., and Schaeffer, K.
Abstract:: The eddy-covariance method often underestimates fluxes under stable, low-wind conditions at night when turbulence is not well developed. The most common approach to resolve the problem of nighttime flux underestimation is to identify and remove the deficit periods using friction-velocity (u*) threshold filters (u*[superscript Th]). This study modifies an accepted...
Resource Type:: Article
Full Text:: of change-point detection for friction–velocity threshold evaluation in eddy-covariance studies U e

A quadratic programming algorithm for deriving efficient farm plans in a risk setting

Creator:: Bauer, Leonard
Abstract:: The main focus was on developing an algorithm and supporting computer programs for use by extension personel to counsel farm managers on problems of enterprise choice. Investigation was initiated from the complete certainty viewpoint of linear programming. Upon introducing uncertainty, ramifications of changing expected income, variance and the correlation coefficient...
Resource Type:: Dissertation
Full Text:: multipliers. The Von Neuman-Morgenstern utility analysis framework was posed for selecting the best

An investigation of the influence of choice structure on decision making behavior

Creator:: Dervitsiotis, Kostas N.
Abstract:: The behavior of individuals in decision making under risk was investigated using choice structures of greater complexity than the types examined in previous studies. The experiment performed consisted of two phases. In Phase I a basic utility function for money was derived for each subject using lotteries with two equally...
Resource Type:: Dissertation
Full Text:: , particularly the von Neumann -Morgenstern model, is more valuable as a prescriptive rather than as a

Simplified stability assessment for low volume road cut and fill slopes

Creator:: Pratt, Randy C.
Abstract:: Many miles of roads are built in the Pacific Northwest Forests to provide access for logging and fire protection. Logging roads often cross steep mountainous terrain. Logging roads and the associated cut and fill slopes represent a discontinuity in the natural stress state in the soil mantle. These conditions result...
Resource Type:: Masters Thesis
Full Text:: Introduction 9 Taylor Solution 10 Bishop and Morgenstern Solution 11 Lo Solution 13 Spencer Solution 13

Toward biologically meaningful net carbon exchange estimates for tall, dense canopies: Multi-level eddy covariance observations and canopy coupling regimes in a mature Douglas-fir forest in Oregon

Creator:: Thomas, Christoph K., Martin, Jonathan G., Law, Beverly E., and Davis, Kent
Abstract:: We sought to improve net ecosystem exchange (NEE) estimates for a tall, dense, mature Douglas-Fir forest in the Oregon Coast range characterized by weak flows, systematic wind directional shear, and limited turbulent mixing throughout the diurnal period. We used eddy covariance (EC) observations at two levels and concurrent biological measurements...
Resource Type:: Article
Full Text:: respiration, Advection, Eddy covariance, u-star correction, Canopy flow, Douglas-Fir, Turbulence 1

Survival and growth patterns of white spruce (Picea glauca [Moench] Voss) rangewide provenances and their implications for climate change adaptation

Creator:: Lu, Pengxin, Parker, William H., Cherry, Marilyn, Colombo, Steve, Parker, William C., Man, Rongzhou, and Roubal, Ngaire
Abstract:: Intraspecific assisted migration (ISAM) through seed transfer during artificial forest regeneration has been suggested as an adaptation strategy to enhance forest resilience and productivity under future climate. In this study, we assessed the risks and benefits of ISAM in white spruce based on long-term and multilocation, rangewide provenance test data....
Resource Type:: Article
Full Text:: 1996; Morgenstern et al. 2006; Wang et al. 2006; Rweyyongeza et al. 2011). Intraspecific assisted

Potentials and limitations for estimating daytime ecosystem respiration by combining tower-based remote sensing and carbon flux measurements

Creator:: Hilker, Thomas, Hall, Forrest G., Coops, Nicholas C., Black, Andrew T., Jassal, Rachhpal, Mathys, Amanda, and Grant, Nicholas
Abstract:: Vegetation carbon uptake and respiration constitute the largest carbon cycle of the planet with an annual turnover in the order of 120 GT. Currently, neither ecosystem carbon uptake (through photosynthesis) nor ecosystem carbon release (through respiration) can be measured directly during the daytime. Instead, flux-tower measurements rely on nighttime respiration...
Resource Type:: Article
Full Text:: ) is used (Morgenstern et al., 2004): R ¼ R10Q10 TS−10ð Þ=10 ð1Þ where R10 is the nocturnal ecosystem

Evaluation and application of ice segregation parameters for frost heave prediction

Creator:: Ito, Yuzuru, 1958-
Abstract:: The success of civil engineering construction in cold regions often depends on the assessment of the potential for frost heave. Over the past two decades two models have been presented to the engineering community to identify the frost heave potential, namely: (1) the segregation potential (SP), and (2) the discrete...
Resource Type:: Dissertation
Full Text:: Page 2.1 Idealization of Formation of Segregated Ice in a Soil Mass (after Konrad and Morgenstern

ScholarsArchive@OSU

Little Ice Age climate and oceanic conditions of the Ross Sea, Antarctica from a coastal ice core record

Performance of some tests for bivariate independence, interchangeability, and equality of distributions of ratios

Use of change-point detection for friction–velocity threshold evaluation in eddy-covariance studies

A quadratic programming algorithm for deriving efficient farm plans in a risk setting

An investigation of the influence of choice structure on decision making behavior

Simplified stability assessment for low volume road cut and fill slopes

Toward biologically meaningful net carbon exchange estimates for tall, dense canopies: Multi-level eddy covariance observations and canopy coupling regimes in a mature Douglas-fir forest in Oregon

Survival and growth patterns of white spruce (Picea glauca [Moench] Voss) rangewide provenances and their implications for climate change adaptation

Potentials and limitations for estimating daytime ecosystem respiration by combining tower-based remote sensing and carbon flux measurements

Evaluation and application of ice segregation parameters for frost heave prediction

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