Index Catalog // ScholarsArchive@OSU

Hybrid Multiscale Methods with Applications to Semiconductors, Porous Media, and Materials Science

Creator:: Costa, Timothy B.
Abstract:: In this work we consider two multiscale applications with tremendous computational complexity at the lower scale. First, we examine a model for charge transport in semicon- ductor structures with heterojunction interfaces. Due to the complex physical phenomena at the interface, the model at the design scale is unable to adequately...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE THESIS OF Timothy B. Costa for the degree

Impacts of forest-to-agriculture conversion on aboveground and soil carbon and nitrogen stocks along a bioclimatic gradient in Costa Rica

Creator:: Jobse, Judith C.
Abstract:: Tropical forest-to-agriculture conversions contribute to ~20% of contemporary global C emissions. Current global C flux estimates assume C is lost from vegetation and soils over time due to this conversion, and that C stocks in agricultural lands are fairly uniform across the tropics. Global C stock and flux estimates may...
Resource Type:: Dissertation
Full Text:: Científico Tropical, San José, Costa Rica. Denman, K. L., G. Brasseur, A. Chidthaisong, P. Ciais, P.M. Cox

Aboveground biomass and ecosystem carbon pools in tropical secondary forests growing in six life zones of Costa Rica

Creator:: Cifuentes Jara, Miguel
Abstract:: Carbon sequestration in tropical secondary forests growing in all climates must be quantified to understand their potential role in adaptation and mitigation strategies of global climate change. Total aboveground biomass (TAGB), soil carbon, and total ecosystem carbon (TEC) were measured in 54 secondary forests growing along a broad bioclimatic gradient...
Resource Type:: Dissertation
Full Text:: Secondary Forests Growing in Six Life Zones of Costa Rica. Abstract approved: J. Boone Kauffman

Independent effects of habitat loss and fragmentation on pollination : tropical forest fragmentation alters hummingbird movements and pollination dynamics

Creator:: Hadley, Adam S.
Abstract:: A growing body of work reveals that animal-mediated pollination is negatively affected by anthropogenic disturbance. Landscape-scale disturbance results in two often inter-related processes: (1) habitat loss, and (2) disruptions of habitat configuration (i.e. fragmentation). Understanding the relative effects of such processes is critical in designing effective management strategies to limit...
Resource Type:: Dissertation
Full Text:: hummingbirds across agricultural and forested ! landscapes near Las Cruces, Costa Rica (Chapter 3). I

An examination of kin and nonkin foster parents’ experiences

Creator:: De Costa, Jennifer L. (Jennifer Loretta)
Abstract:: The growth of foster care, particularly kin foster care has greatly outpaced our knowledge. The purpose of this exploratory qualitative study was to develop a more informed understanding of foster family functioning from the perspective of foster parents. This study examined the experiences of 9 kin and 12 nonkin foster...
Resource Type:: Dissertation
Full Text:: � AN ABSTRACT OF THE DISSERTATION OF Jennifer L. De Costa for the degree of Doctor of Philosophy in

The Biogeochemistry of nitrogen and phosphorus cycling in native shrub ecosystems in Senegal

Creator:: Dossa, Ekw'e Lokossou, 1960-
Abstract:: Two native shrub species (Piliostigma reticulatum and Guiera senegalensis) are prominent vegetation components in farmers’ fields in Senegal. However, their role in nutrient cycling and ecosystem function has largely been overlooked. A study including both laboratory and field experiments was conducted to evaluate potential biophysical interactions of the two shrub...
Resource Type:: Dissertation
Full Text:: Abstract approved: Richard P. Dick Two native shrub species (Piliostigma reticulatum and Guiera

Investigations of regulatory T cell induction by 2, 3, 7, 8-Tetrachlorodibenzo-p-dioxin during a graft-versus-host response

Creator:: Marshall, Nikki B.
Abstract:: The immune toxicity of 2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD) has been studied for over 35 years, but only recently has the profound immune suppression associated with TCDD exposure been linked to induction of regulatory T cells (Tregs). The effects of TCDD are mediated through binding the aryl hydrocarbon receptor (AhR), a ligand-activated transcription...
Resource Type:: Dissertation
Full Text:: , 8-Tetrachlorodibenzo- p-Dioxin During a Graft-versus-Host Response Abstract approved

Timescales and tectonics of oceanic plateaus : long-term evolution of Ontong Java Nui and Rio Grande Rise

Creator:: Davidson, Peter C.
Abstract:: Oceanic plateaus are regions of overthickened oceanic crust and are often thought to form from the interaction of mantle plumes with oceanic lithosphere. These regions can cover vast areas of the ocean basins and represent a highly elevated magmatic flux relative to normal mid-ocean ridge spreading. Oceanic plateaus are considered...
Resource Type:: Dissertation
Full Text:: Java Plateau; PETM: Paleocene- Eocene Thermal Maximum; Pl-To: Pliensbachian-Toarcian boundary event; P

Model assessment of the effects of land use change on hydrologic response

Creator:: Vache, Kellie B.
Abstract:: The effect of landuse change on the hydrologic, biogeochemical and ecological response of watersheds is a concern throughout the world. To help characterize the potential magnitude of such changes, and of the potential to remediate or avoid undesirable features, studies focused on the cumulative watershed effects of site level change...
Resource Type:: Dissertation
Full Text:: Assessment of the Effects of Land Use Change on Hydrologic Response. Abstract approved: John P. Bolte The

Middle school teachers’ use of a formative feedback guide in mathematics problem solving instruction

Creator:: Strowbridge, Jessica
Abstract:: The purpose of this study was to address the implementation fidelity of one part of a professional development model developed by the Northwest Regional Educational Laboratory (NWREL). Specifically, this research investigates middle school teachers’ use of a formative feedback guide developed by NWREL staff, examining the reliability with which teachers...
Resource Type:: Dissertation
Full Text:: Thomas P. Dick The purpose of this study was to address the implementation fidelity of one part

ScholarsArchive@OSU

Hybrid Multiscale Methods with Applications to Semiconductors, Porous Media, and Materials Science

Impacts of forest-to-agriculture conversion on aboveground and soil carbon and nitrogen stocks along a bioclimatic gradient in Costa Rica

Aboveground biomass and ecosystem carbon pools in tropical secondary forests growing in six life zones of Costa Rica

Independent effects of habitat loss and fragmentation on pollination : tropical forest fragmentation alters hummingbird movements and pollination dynamics

An examination of kin and nonkin foster parents’ experiences

The Biogeochemistry of nitrogen and phosphorus cycling in native shrub ecosystems in Senegal

Investigations of regulatory T cell induction by 2, 3, 7, 8-Tetrachlorodibenzo-p-dioxin during a graft-versus-host response

Timescales and tectonics of oceanic plateaus : long-term evolution of Ontong Java Nui and Rio Grande Rise

Model assessment of the effects of land use change on hydrologic response

Middle school teachers’ use of a formative feedback guide in mathematics problem solving instruction

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