Index counts for the Pacific Coast race of the band-tailed pigeon (Columba fasciata monilis) have declined by -2% per year since survey efforts began in the 1950's and 60's. Mineral sites, important resources with high ion concentrations, are regularly visited by band-tailed pigeons which nest in surrounding forest lands. I...
The boom of the microcar market in India has lead to domestic and international firms taking advantage of this growth. Many places including India are experiencing this trend, but due to differences in cultures, preferences and values, the United States is not. Companies that want to venture into the microcar...
Conclusion: The first part of this note deals with problems of propagation of error and the latter part with questions commonly identified as "model validation" questions. It is concluded that all validation questions can be resolved into two parts: (1) strategic aspects, involving logical and inferential structures and (2) tactical...
In this dissertation I explore the Arms representation and activities for teaching quantum mechanics invented at Oregon State University. In the Arms representation students embody quantum states. The Arms activities are presented as an exemplar of the unique physics classroom culture of the upper-division Paradigms in Physics program. In the...
The problem of estimating the parameters of a forced discrete
linear dynamic model is considered. The system model is conceptualized
to include the value of the initial state as a parameter. The forces
driving the system are partitioned into accessible and inaccessible
inputs. Accessible inputs are those that are measured;...
Many ecological populations can be interpreted as response surfaces; the spatial
patterns of the population vary in response to changes in the spatial patterns of
environmental explanatory variables. Collection of a probability sample from the
population provides unbiased estimates of the population parameters using design
based estimation. When information is...
The problem addressed is absence of a class of objects in a finite set of objects, which
is investigated by considering absence of a species and absence in relation to a threshold.
Regarding absence of a species, we demonstrate that the assessed probability of absence
of the class of objects...
An hierarchically structured resource flow competition model
for two species is developed. The model is shown to be
intrinsically neutrally stable with a dynamical behavior
derived from perturbation responses. The model properties
are contrasted with those of a conventionally interpreted
Lotka-Volterra competition model.
A simulation developed from the model is...
The portability and reduced price of unmanned aerial systems (UAS) in recent years has led to a broad range of new UAS-enabled scientific inquiries, including for forestry. Small, consumer-grade UAS are advantageous for forest measurements due to their portability, ease and safety of deployment, and notably, they are currently the...