"Expert systems" is an area in the field of
artificial intelligence which attempts to encode an
"expert's" heuristic knowledge and reasoning ability into
a computer program. The purpose of this study is to
investigate the applicability of using an "expert system"
in a closed-loop automatic control system.
An "expert system"...
Benthic samples were collected during the summer, winter and
spring seasons from upper Yaquina Estuary, a region used by Georgia-
Pacific Corporation for log dumping and storage. Samples came from
an active log dump and storage areas as well as areas not associated
with log handling activity. The samples were...
An important subset of natural resource management addresses preserving and/or harvesting biological resources. Examples are policies that derive from the Endangered Species Act including habitat conservation plans, the U.S. Forest Service’s logging practices, and fishery management councils’ decisions regarding catches. To understand the effectiveness of management policies requires an understanding...
The fish Cymatogaster aggregata, Embiotoca lateralis and
Phanerodon furcatus served as definitive hosts for the trematode
Telolecithus pugetensis Lloyd and Guberlet. Eggs that were collected
from the terminal part of the uterus of mature worms were found to
have undergone several cleavages, but complete development was
observed only in some...
Natural populations of kokanee fingerlings were studied in Odell Lake, Oregon from June 1962 to September 1963. Vertical and horizontal distributions were determined in relation to temperature, zooplankton, and light during the summer of 1963. Food habits of the fingerlings were also examined. A mid-water townet was employed for sampling...
Previous research has indicated that considerable amounts of finely divided slash accumulate in small mountain streams following timber harvesting. The subsequent biological decomposition of this organic matter can result i.n the reduction of dissolved oxygen (DO) concentration to levels as low as 0.6 ppm. These DO levels are lethal
to...