This study investigated the laboratory performance of crumb rubber modified
mixtures compared to a standard bituminous mixture using performance based test
procedures. This study was part of an asphalt resurfacing program for the Seattle
Washington area. Laboratory analyses were used to estimate the long term pavement
performance of these mixtures...
This study was made to present any evidence as to differences
in the frequency of occurrence of corticolous lichens from east to
west in the Willamette Valley on a bark substrate of Quercus Garryana.
Twenty-four species of lichens were observed to be present
within the grid area of the 100...
Successful implementation of a forest plan depends in large part on 1) the quality of that plan, 2) the amount of public ownership in it and 3) the ability of the Forest Service to effectively involve the public in the process of putting it into action. The first two'points are...
Evaluations were performed on three stream temperature prediction models: Heat
Source 5.6, SSTEMP 3.9, and Brown's equation. Each model was evaluated using data
collected from three Coastal Oregon and two western Cascade streams. Stream temperature
simulations were performed on two forested reaches, one clearcut reach, and one buffered
reach, for...
This paper demonstrates the effectiveness of a heuristic for
the Traveling Salesman Problem based purely on the efficient
storage of multiple partial sub-tours. The heuristic is among the
best available for the solution of large scale geometric Traveling
Salesman Problems. Additionally, a version of the heuristic can be
used to...
Boron has been recognized since 1923 as an essential
micronutrient for vascular plants, but its function is
still not known. Many diverse roles have been proposed,
but none of these has been definitively shown. Problems
that have made the study of the function of boron
difficult include, no useful radioisotope,...
A two year experiment demonstrated electrical energy savings
through evaporator fan cycling in part of a full-sized refrigerated
controlled atmosphere apple storage facility in Yakima, Washington.
Room cooling demand and evaporator fan operation was controlled by
the bulk fruit temperature. Refrigerant temperature was regulated
by a computer controlled ramping sequence...