Crops were grown at the experimental farms using accepted cultural practices within the limits of experimentation or trials were conducted on growers' fields. Most experiments were designed as randomized complete blocks with two to five replications. H8rbicide treatments were applied uniformly with equipment ranging from precision plot sprayers to quart...
The research reported here was a preliminary study to assess the nature and extent of herbicides leaving the target area in runoff water when these materials are used in container nurseries, and with less emphasis from nurseries growing field stock.
Specific objectives of this study were to:
1) Survey the...
This tutorial discusses one of the oldest problems in computing: how to search and retrieve keyed information from a list in the least amount of time. Hashing -- a technique that mathematically converts a key into a storage address -- is one of the best methods of finding and retrieving...
Perennial grass cover crops are frequently grown between the vines in non-irrigated Oregon vineyards. The primary reasons for using cover crops are erosion control and to allow machinery access in wet weather. Grass cover crops may also have an effect on vine performance. These effects, however, are not always clear....
We survey the use of genetic algorithms in function optimization. We find that there are two distinct camps. Holland's camp seems to be interested in artificial intelligence uses of genetic algorithms and seems to have made only a few attempts at function optimization. Rechenberg's camp has concentrated on the optimization...
Large fallen trees in various stages of decay contribute much-needed diversity of ecological processes to terrestrial, aquatic, estuarine, coastal beach, and open ocean habitats in the Pacific Northwest. Intensive utilization and management can deprive these habitats of large fallen trees. The publication presents sound information for managers making resource management...
Spring freeze decreased the yield of field grown grapevines by 70%. The spring bud development of Pinot noir was characterized into seven stages after the initial budbreak, 96% of the buds attained full development in 44 days. Controlled freezing tests were used to determine bud hardiness. The T50 values (temperature...
Two powerful reasoning tools have recently appeared, logic programming and assumption based truth maintenance systems (ATMS). An ATMS offers significant advantages to a problem solver: assumptions are easily managed and the search for solutions can be carried out in the most general context first and in any order. Logic programming...
A potential vegetation classification system is presented for the Olympic National Forest. It is
based on a sample of 1046 Reconnaissance and 408 Intensive plots. The hierarchical classification
includes sixvegetation series and 64 plant associations. Diagnostickeys are presented to aid in the identification of series and associations. Descriptions are presented...
"This report concerns one aspect of the marina permit evaluation process: water quality impacts related to marina circulation and flushing efficiency. These physical properties vary with the wind, tide range, water density and physical dimensions of a marina. Water quality is affected by the degree of flushing, and sediment redistribution...
Sediments from Yaquina Bay and the Yaquina River from the river mouth to river mile 14, and from Depoe Slough at river mile .25 and 1.5 were tested. While sediments near the river mouth were "extremely clean," and main-channel sediments were relatively clean, Depoe Slough sediments were more polluted. Alternatives...
There are basically two types of grafting, bench grafting and field grafting. Worldwide the main reasons for bench grafting vines are: a) to obtain vines of the desired fruiting variety on roots resistant to phylloxera or nematodes, or b) to obtain vines on roots tolerant to certain soil conditions such...
We investigate several methods of computing Fibonacci numbers quickly and generalize some properties of the Fibonacci numbers to degree r Fibonacci (R-nacci) numbers. Sections 2 and 3 present several algorithms for computing the traditional, degree two, Fibonacci numbers quickly. Sections 4 and 5 investigate the structure of the binary representation...
Reasoning about physical systems requites the integration of a range of knowledge and reasoning techniques. P. Hayes has named the enterprise of identifying and formalizing the common-sense knowledge people use for th.is task "naive physics." Qualitative Process theory by K. Forbus proposes a structure and some of the content of...
Expert advisory systems for agricultural pest management control offer the means to capitalize on the wealth of information that is currently tied up in research laboratories and human experts' minds. The ideal system would blend knowledge from three sources - human experts, dynamic simulation models, and historical databases - to...
Several years ago we began development of an object-based programming language and environment which we call X2. We implemented X2 using a virtual machine similar to Smalltalk-80 implementations, but X2 does no message look-up. The implementation differs from most Smalltalk-80 systems in that objects are paged and in the ability...
Pinot noir research in Oregon is aimed at improving wine quality and production and at increasing the diversity of virus-free clonal material available to our wine industry. Numerous clones of Pinot noir have been identified in France where the cultivar is known for its wide range of genetic variability. Because...
This report includes information concerning experimental use of unregistered pesticides or unregistered uses of pesticides. Experimental results should not be interpreted as recommendations for use. Use of unregistered materials or use of any registered pesticides inconsistent with its label is against both Federal Law and State Law.
This report includes information concerning experimental use of unregistered pesticides or unregistered uses of pesticides. Experimental results should not be interpreted as recommendations for use. Use of unregistered materials or use of any registered pesticides inconsistent with its label is against both Federal Law and State Law.
One of the most popular topologies is the hypercube, that has n = 2ᵏ processors, numbered 0 to 2ᵏ -1 and connected in such a way that there is a link between any two if and only if they differ in one bit. Its popularity is due to the fact...
Performance of a reliable storage subsystem for a centralized database system was studied by simulation. The reliable storage subsystem studied consists of three redundant disk units that are updated one at a time from a consistent database state to another consistent database state, Thus, even if a central processor and/or...
The bluffs and plateaus of the eastern Columbia River are floristically rich and ecologically intricate. A previous descriptive study of the unique scabland vegetation on the Gov. Tom McCall Preserve at Rowena Plateau in Oregon included delineation of several distinct or intergrading native and non-native vegetation units. In this study...
The Direct/Delayed Response Project (DDRP) has been designed and implemented to estimate the number of lakes and streams that might become acidic in three regions due to current or altered levels of acidic deposition. As part of DDRP, 145 watersheds in the northeast US were mapped at 1:24,000 for soils,...
The following is a report on a limited survey we conducted testing for the presence of Mesurol (Methiocarb) in Oregon wines. This study was undertaken as a result of recent publicity (resulting from testing in British Columbia) concerning the finding of Methiocarb residues in some wines, including Oregon wines; and...
This research paper is limited to the User Interface of the modeling language of HELM (Hierarchical Environment for Linear Modeling). In attempt to better describe the user interface for HELM, some examples and portions of Carol Brown's report are included for ease of reading and a brief overview of the...
This workshop was intended to "open lines of communication" between crab fishers, seafood processors and dealers, and State fisheries management personnel. "About 35 people attended. We talked about industry goals and objectives, management tools, industry views/ideas and specific concerns." (from the Introduction) Topics included maximizing yield, access, profits, biological productivity,...
The phrase "canopy management" has recently become trendy in many New World grapegrowing areas. Interestingly enough, the concepts are not new and are generally acknowledged in Old World viticulture, though often these empirical observations are misinterpreted, as we will soon show. It was Nelson Shaulis of Cornell University who developed...
Grape growers seeking to protect their grapes from bird depredations have no economic guidelines for selecting one or more of several control alternatives. Many growers are not aware of the cost of applying the various control techniques, nor do they know how effective these techniques are in preventing damage to...
A theory for resiliency control of distributed database systems is developed, and schemes that preserve the consistent global database state in the presence of site crashes and message link failures are discussed. The schemes can at least theoretically be paired with any concurrency control scheme that produces y-serializable executions. Further,...
"Annual report : October 1, 1980 to September 30, 1981" "During the year we continued our studies on the clam resources in Oregon's estuaries. Our objectives were: to collect data for developing a scientifically sound clam management database and to refine techniques for assessing the potential for a commercial clam...
"Completion report : October 1, 1979 to December 31, 1981" "We completed Our assessment of commercial clam harvest potential in Tillamook, Yaquina and Coos bays. All three bays contained commercial quantities of clams. Detailed studies in Yaquina Bay in 1981 revealed a biomass estimate of 2.6 million pounds (1,179.1 mt)...