Index Catalog // ScholarsArchive@OSU

Parametric uncertainties in reliability analysis of bridge structures

Creator:: Hamutcuoglu, Osman Murat
Abstract:: Probability-based reliability methods have placed an increased emphasis on realistic simulation of structural behavior in bridge engineering. Uncertainty is present in every aspect of structural analysis. Aleatory uncertainties in the loading and load-carrying capacities, and epistemic uncertainties in mathematical idealization of bridge systems are the major contributors to uncertain structural...
Resource Type:: Dissertation
Full Text:: . . . . . . . . . . . . . . . . 188 D OpenSees Uniaxial Material: Steel02 . . . . . . . . . . . . . . . . . . 189 E McKenzie River

Biomechanical Demands and Postural Control During Exercises Commonly Performed by Older Adults in Falls Prevention Programs

Creator:: Stutzenberger, Lyndsay R.
Abstract:: Exercise programs that are individualized and moderately challenge balance to address falls risk factors are recommended for preventing falls in community-dwelling older adults. Little is known regarding the biomechanical and postural control demands in exercises commonly performed in falls prevention programs. Twenty-two non-sedentary, healthy older adults (11 men, 11 women,...
Resource Type:: Dissertation
Full Text:: filtered with MotionMonitor software using a low pass, fourth-order, no-lag Butterworth filter at 10 Hz

Contemporary regional forest dynamics in the Pacific Northwest

Creator:: Reilly, Matthew J. (Matthew Justin), 1975-
Abstract:: Recent climatic warming trends and increases in the frequency and extent of wildfires have prompted much concern regarding the potential for rapid change in the structure and function of forested ecosystems around the world. Episodes of mortality in wildfires and insect outbreaks associated with drought have affected large areas and...
Resource Type:: Dissertation

Development and decommissioning of small dams : analysis of impact and context

Creator:: Kibler, Kelly Maren
Abstract:: Management of small dams may have profound implications for the health and integrity of small rivers and freshwater diversity. Global indicators suggest future growth in the small hydropower sector, particularly in developing countries. As a renewable energy source, it is often presumed that small hydropower entails fewer and less severe...
Resource Type:: Dissertation

Integrated Spatial and Temporal Stochastic Model in Radiation Biology : Design, Implementation, and Application

Creator:: Liu, Ruirui
Abstract:: Mathematical modeling plays a pivotal role in understanding the mechanism of radiation-induced cellular effects, and also in quantifying the radiation risk to the cell. However, there are still compelling challenges facing the conventional modeling in radiobiology, such as lacking a generalized theory structure of quantifying target effect and non-target effect...
Resource Type:: Dissertation

Amphibian Population Declines and Extinctions: Disease in Amphibian Communities with Cascading Effects in Freshwater Communities

Creator:: Harjoe, Carmen C.
Abstract:: Earth is experiencing unprecedented biodiversity loss. Amphibians are at the forefront of this biodiversity loss, with species declines estimated to be more severe than those of birds and mammals. Amphibian population declines and extinctions are driven by a number of factors including climate change, habitat destruction, contaminants and disease but...
Resource Type:: Dissertation

Population Genetics of American Pika (Ochotona princeps) : Investigating Gene Flow and Genetic Diversity Across Multiple, Complex Landscapes

Creator:: Castillo, Jessica A.
Abstract:: American pikas (Ochotona princeps) are considered an indicator species of climate change. Adaptations for cold climates and active winters make pikas particularly sensitive to increasing temperatures. This, combined with evidence that multiple historically occupied populations have been extirpated within the past century, contributed to American pikas becoming a focal species...
Resource Type:: Dissertation

Combining Disparate Data Sources with Ecosystem and Integrated Models: Case Studies for Improving Management of Protected Species

Creator:: Chasco, Brandon E.
Abstract:: Globally, the number of threatened species is increasing and conserving them is a high priority to the scientific community. Assessing the status of these protected species is challenging due to missing, contested, and or contradictory data streams. Integrated models (IMs) provide a statistical framework for combining disparate data sources to...
Resource Type:: Dissertation

An Integrated Approach to Gauge the Effects of Global Climate Change on Headwater Stream Ecosystems

Creator:: Bury, Gwendolynn W.
Abstract:: Climate change is predicted to affect ecosystems, including systems already stressed by human impacts. One ecosystem that is already highly impacted by human land use is the cold headwater stream system of the Pacific Northwest. One method of assessing the function of an ecosystem is by using an indicator species....
Resource Type:: Dissertation
Full Text:: working are next. First is my partner Joseph Butterworth. Joe’s contributions to my ability to work

An assessment of plant community structure, herbivory, soils, and state-and-transition theory on a winterfat (Krascheninnikovia lanata [Pursh] A.D.J. Meeuse & Smit) ecological site

Creator:: Matney, Casey A.
Abstract:: State-and-transition models (STMs) have been successfully used to describe ecological dynamics in woodlands, shrublands, grasslands, and several other ecosystems. Changes in vegetation and soil are measured to gauge and predict plant community dynamics within ecological states and transitions between alternative ecological states. Ecological states and their boundaries are defined by...
Resource Type:: Dissertation

ScholarsArchive@OSU

Parametric uncertainties in reliability analysis of bridge structures

Biomechanical Demands and Postural Control During Exercises Commonly Performed by Older Adults in Falls Prevention Programs

Contemporary regional forest dynamics in the Pacific Northwest

Development and decommissioning of small dams : analysis of impact and context

Integrated Spatial and Temporal Stochastic Model in Radiation Biology : Design, Implementation, and Application

Amphibian Population Declines and Extinctions: Disease in Amphibian Communities with Cascading Effects in Freshwater Communities

Population Genetics of American Pika (Ochotona princeps) : Investigating Gene Flow and Genetic Diversity Across Multiple, Complex Landscapes

Combining Disparate Data Sources with Ecosystem and Integrated Models: Case Studies for Improving Management of Protected Species

An Integrated Approach to Gauge the Effects of Global Climate Change on Headwater Stream Ecosystems

An assessment of plant community structure, herbivory, soils, and state-and-transition theory on a winterfat (Krascheninnikovia lanata [Pursh] A.D.J. Meeuse & Smit) ecological site

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