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Filtering by: Committee Member Urquhart, Scott Remove constraint Committee Member: Urquhart, Scott

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Factors affecting bird counts and their influence on density estimates

Creator:

McCracken, Marti L.

Abstract:

Variable area surveys are used in large geographic regions to estimate the density of birds distributed over a region. If some birds go undetected, a measure of the effective area surveyed, the amount of area occupied by the birds detected, is needed. The effective area surveyed is determined by observational,...

Resource Type:

Dissertation
Diagnostics for the evaluation of spatial linear models

Creator:

Thompson, Caryn M. (Caryn Marie)

Abstract:

Geostatistical linear interpolation procedures such as kriging require knowledge of the covariance structure of the spatial process under investigation. In practice, the covariance of the process is unknown, and must be estimated from the available data. As the quality of the resulting predictions, and associated mean square prediction errors, depends...

Resource Type:

Dissertation
Estimating crop yield and production changes as a function of irrigation deficit based on watershed and county level data

Creator:

Darakjian, Priscila

Abstract:

Response of agricultural crops to irrigation water deficit is well-understood at the field scale. Broader scale (watershed and county levels) studies have been less frequently performed. Data collection at the field level for extensive areas is time consuming and expensive. The importance of studies at a broader scale for evaluating...

Resource Type:

Masters Thesis
Fecal coliform bacteria in stream sediments : sampling methodology, measurement and modeling the impact on stream water quality

Creator:

Church, Wendy S.

Abstract:

Three studies were conducted related to the measurement and impact of stream sediment fecal coliform (FC) bacteria on stream water quality. In part one an enumeration technique for sediment FC was defined and statistically characterized. This characterization necessitated the development of a sample splitting mechanism, which was found to split...

Resource Type:

Dissertation

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Academic Affiliation

Bioresource Engineering2
Statistics2

Advisor

Ramsey, Fred L.2
Bolte, John P.1
Moore, James A.1

Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 1994 to 2001

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Committee Member

Urquhart, Scott[remove]4
Anthony, Bob1
Arthur, Jeff1
Birkes, David1
Bolte, John1
more Committee Members »

Creator

Church, Wendy S.1
Darakjian, Priscila1
Mccracken, Marti L.1
Thompson, Caryn M. (Caryn Marie)1

Date

Date range begin – Date range end

Current results range from 1993 to 2000

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Decade

2000-20092
1990-19992

Degree Field

Bioresource Engineering2
Statistics2

Degree Level

Doctoral3
Master's1

Degree Name

Doctor of Philosophy (Ph.D.)3
Master of Science (M.S.)1

Language

English [eng]4

Non-Academic Affiliation

Oregon State University. Graduate School4

Peer Reviewed

No2

Resource Type

Dissertation3
Masters Thesis1

Rights Statement

Copyright Not Evaluated4

Subject

Birds -- Counting -- Computer simulation1
Birds -- Counting -- Mathematical models1
Crops and water -- Oregon -- Mathematical models1
Deficit irrigation -- Oregon -- Mathematical models1
Enterobacteriaceae -- Oregon -- Willamette River1
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