Index Catalog // ScholarsArchive@OSU

The Effect of Surface Finish on Ball Grid Array Lead Free Solder Joints

Creator:: Casali, Dick R.
Abstract:: As microelectronic parts trend smaller so do their solder joints. The surface finish on a copper pad is expected to become a significant part of the total solder joint volume and therefore affect mechanical properties of the smaller solder joints. Two sample geometries and four different surface finishes for tin-silver-copper...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Dick R. Casali for

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

A study on student perceptions of principles of logic and their application to the principle of mathematical induction

Creator:: Boone, Allan R.
Abstract:: The purpose of this article is to explore student reasoning with regard to problems in logic, particularly those related to the Principle of Mathematical Induction (PMI). The five case studies presented build off of work done by other researchers, most notably Dubinsky and Harel, who both looked at how students'...
Resource Type:: Masters Thesis
Full Text:: : ______________________________________________________________________________ Thomas P. Dick The purpose of this article is to explore student reasoning with regard to

Winter cover cropping effects on integrative biological indicators of soil quality

Creator:: Ndiaye, Evelyne L.
Abstract:: Responses of biological indicators of soil quality to winter cover cropping were measured on soil samples collected from 6 commercial growers' fields and two experiment research stations in the Willamette Valley of Oregon. The research stations were the North Willamette Research and Extension Center (Aurora, OR), and the Oregon State...
Resource Type:: Masters Thesis
Full Text:: indicators of soil quality AN ABSTRACT OF THE THESIS OF Evelyne L. Ndiaye for the degree of Master of

Spatio-Temporal Analysis and Modeling in the Marine Environment : Humpback Whale Genetic Variability and Seabird Distributions in the Northeastern Pacific Ocean

Creator:: Dick, Dorothy Marie
Abstract:: The rapid decline of marine ecosystems worldwide and the failure of traditional single species management pushed for the development of ecosystem-based conservation measures such as marine protected areas (MPA) to slow the loss of marine biodiversity. One approach to MPA creation advocates targeting marine megafauna (e.g., marine mammals, seabirds, sharks,...
Resource Type:: Dissertation
Full Text:: ABSTRACT OF THE DISSERTATION OF Dorothy Marie Dick for the degree of Doctor of Philosophy in Geography

Fecal Bacteroidetes host distributions and environmental source tracking

Creator:: Dick, Linda K.
Abstract:: Contamination of recreational and shellfish waters with fecal pollution is a major water quality issue with associated economic impacts and human health risks. Reliable fecal source identification and rapid, quantitative analyses are essential components of risk assessment. Enteric bacteria that are endemic to specific hosts have a potential role as...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Linda K. Dick for the degree

Growth, Characterization and Applications of Zinc Sulfide Thin Films by Solution-Based Processes

Creator:: Chiu, Dick
Abstract:: Zinc Sulfide (ZnS) thin film, with a wide band gap, has been used for many applications, such as buffer layer for CIGS solar cells, light emitting diodes and thin film electroluminescent devices. In this work, ZnS thin films were prepared using two different deposition processes. In the first method, ZnS...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Dick Chiu for

Microbial community structure as influenced by season and stand age in a Douglas-fir (Pseudotsuga menziesii) ecosystem

Creator:: Kucera, Jennifer Moore
Abstract:: Forest harvest can have significant impacts on forest ecosystems that may influence the capacity of soils to sequester carbon (C). The microbial community controls decomposition, which is a critical process in partitioning litter- and root-C between CO₂ and storage in semi-permanent soil-C pools. The objectives of this study were to...
Resource Type:: Dissertation
Full Text:: advisor, Richard Dick, who somehow managed to continue mentoring from across the country and globe. His

Activity, composition and structure of soil microbial communities in Savannahshrubs of agroecosystems in semi-arid Senegal

Creator:: Diedhiou, Sire
Abstract:: Piliostigma reticulatum and Guiera senegalensis are two native shrubs that coexist with row crops in parkland systems of the Sahel of Africa. Although permanently green all year around in soil depleted in nutrients and dry for a nine-month period, these shrubs have been largely overlooked. Conventional management of these shrubs...
Resource Type:: Dissertation
Full Text:: : ___________________________________________________________________ Richard P. Dick Piliostigma reticulatum and Guiera senegalensis are two native shrubs that

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:: AN ABSTRACT OF THE DISSERTATION OF Ekwe L

ScholarsArchive@OSU

The Effect of Surface Finish on Ball Grid Array Lead Free Solder Joints

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

A study on student perceptions of principles of logic and their application to the principle of mathematical induction

Winter cover cropping effects on integrative biological indicators of soil quality

Spatio-Temporal Analysis and Modeling in the Marine Environment : Humpback Whale Genetic Variability and Seabird Distributions in the Northeastern Pacific Ocean

Fecal Bacteroidetes host distributions and environmental source tracking

Growth, Characterization and Applications of Zinc Sulfide Thin Films by Solution-Based Processes

Microbial community structure as influenced by season and stand age in a Douglas-fir (Pseudotsuga menziesii) ecosystem

Activity, composition and structure of soil microbial communities in Savannahshrubs of agroecosystems in semi-arid Senegal

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

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