Climate change is a global phenomenon, but natural selection occurs within landscapes. A central tenet of landscape ecology is that mobile species depend on complementary habitats, which are insufficient in isolation, but combine to support animals through the full annual cycle. For coldwater fishes, it is widely assumed that maximum...
This dissertation presents novel, field-activated smart material systems for the actuation and control of autonomous robots. Smart materials, a type of material whose properties can be changed with an external stimuli, represent a promising direction to expand upon existing robotic control and actuation methods, particularly in the sub-fields of soft...
Onsite wastewater treatment systems (OWTS; septic systems, compost toilets, etc.) used to treat wastewater in rural areas have the potential to contaminate groundwater (that is used as a water source) with nitrate. There have been decades of scientific and political conflicts concerning the issue of nitrate from OWTS (NOWTS, pronounced...
The Safe Drinking Water Act ensures that public systems provide water that meets health standards. However, no such protection exists for millions of Americans who obtain water from private wells. Concern for safety is warranted as most wells draw from underground aquifers, and studies demonstrate that groundwater is affected by...
The natural environment provides important services and benefits to peoples’ health and lives. Conversely, environmental disservices can have negative impacts on humans such as through pollution, chemical toxins, and climate change. The combination of environmental services and disservices encompass how human health and wellbeing, and the environment are connected. As...
The purpose of this study was to investigate the relationship between poverty and mental retardation and to place mental retardation in its true perspective as a social condition which thrives especially in poverty areas. More specifically, this study attempted to determine if there was any significant relationship between selected social...
The properties of linear active coupled lines consisting of
electrically long GaAs MESFET structures are investigated for possible
applications as traveling-wave broad-band amplifiers. In addition,
the nonlinear coupled Schottky lines are studied for applications as
voltage tunable circuit elements.
The analysis of the general active asymmetric coupled transmission
lines in...
To determine whether there were differences between foreign (Arab) and American student attitudes toward academic dishonesty in Oregon State University, a seventy-eight item questionnaire designed by Kirk, (1970) was adapted and administered to two hundred and eighty Arab and American graduate and undergraduate students. Three aspects of academic dishonesty were...
Animals aggregate and interact in nonuniform and nonrandom patterns, which lead to group level characteristics that have important evolutionary and ecological consequences. Network analysis provides a useful conceptual framework for linking animal interactions at all scales from dyads to communities, to populations and ecosystems. Despite exciting theoretical and applied advances...