A general porous-medium equation is uniquely solved subject to a pair of boundary conditions for the trace of the solution and a second function on the boundary. The use of maximal monotone graphs for the three nonlinearities permits not only the inclusion of the usual boundary conditions of Dirichlet, Neumann,...
Some authors defending the "hereditarian" hypothesis with respect to differences in average IQ scores between populations have argued that the sorts of environmental variation hypothesized by some researchers rejecting the hereditarian position should leave discoverable statistical traces, namely changes in the overall variance of scores or in variance-covariance relating scores...
Marine and freshwater food webs are strongly structured by size-dependent predator−prey interactions. Predator−prey body mass ratios (PPMR) are important parameters in size-based food-web models, but studies evaluating the temporal stability of PPMR or its relationship to predator feeding modes are scant. Using a large data set of predator−prey pairs from...
The frequency of moderate to heavy rainfall events is projected to change in response to global warming. Here we show that these hydrologic changes may have a profound effect on mosquito population dynamics and rates of mosquito-borne disease transmission. We develop a simple model, which treats the mosquito reproductive cycle...
Mosquitoes and mosquitoborne disease transmission
are sensitive to hydrologic variability. If local hydrologic
conditions can be monitored or modeled at the scales at
which these conditions affect the population dynamics of
vector mosquitoes and the diseases they transmit, a means
for monitoring or modeling mosquito populations and mosquitoborne
disease transmission...
We isolated seven polymorphic microsatellite loci from a ground beetle (Bembidion atrocaeruleum, Coleoptera, Carabidae
(Stephens, 1826)) associated with naturally and regularly disturbed floodplain habitat in northwest Europe. Loci were tested on 157 individuals
collected from five distinct habitat patches across two adjacent drainage basins in Wales, United Kingdom, to assess...
The expansion of pion-juniper woodlands the past 100 years in the western United States has resulted in large scale efforts to kill trees and recover sagebrush steppe rangelands. It is important to evaluate vegetation recovery following woodland control to develop best management practices. In this study, we compared two fuel...
A miniature thermistor chain (mTc) was developed to measure the subdiurnal variability of temperature in
the upper layers of subtidal coastal permeable (sandy) sediments and across the sediment-water interface (SWI).
The mTc has 15 precision thermistors (0.002°C accuracy) attached by narrow tines to a stainless steel backbone
that connects to...
We used a dynamic hydrology model to simulate water table depth (WTD) and quantify the relationship
between Saint Louis encephalitis virus (SLEV) transmission and hydrologic conditions in Indian River
County, Florida, from 1986 through 1991, a period with an SLEV epidemic. Virus transmission followed
periods of modeled drought (specifically low...
This paper presents a system of modeling advances that can be applied in the computational optimization of wind plants. These modeling advances include accurate cost and power modeling, partial wake interaction, and the effects of varying atmospheric stability. To validate the use of this advanced modeling system, it is employed...