22,175 research outputs found
Classification of wetlands vegetation using small scale color infrared imagery
A classification system for Chesapeake Bay wetlands was derived from the correlation of film density classes and actual vegetation classes. The data processing programs used were developed by the Laboratory for the Applications of Remote Sensing. These programs were tested for their value in classifying natural vegetation, using digitized data from small scale aerial photography. Existing imagery and the vegetation map of Farm Creek Marsh were used to determine the optimal number of classes, and to aid in determining if the computer maps were a believable product
Space Shuttle astrodynamical constants
Basic space shuttle astrodynamic constants are reported for use in mission planning and construction of ground and onboard software input loads. The data included here are provided to facilitate the use of consistent numerical values throughout the project
Cryogenic adhesives and sealants: Abstracted publications
Abstracts of primary documents containing original experimental data on the properties of adhesives and sealants at cryogenic temperatures are presented. The most important references mentioned in each document are cited. In addition, a brief annotation is given for documents considered secondary in nature, such as republications or variations of original reports, progress reports leading to final reports included as primary documents, and experimental data on adhesive properties at temperatures between about 130 K and room temperature
Development of a flash, bang, and smoke simulation of a shell burst
A large number of experiments (cue test firings) were performed in the definition of the cue concepts and packaging configurations. A total of 344 of these experiments were recorded with instrumentation photography to allow a quantitative analysis of the smoke cloud to be made as a function of time. These analyses were predominantly made using a short test site. Supplementary long range visibility tests were conducted to insure the required 3 kilometer visibility of the smoke signature
1987 Oregon Vineyard and Winery Report
This document is the first comprehensive report of a survey on Oregon\u27s wine grape industry. The report provides an inventory of vineyard plantings and a detailed summary of the 1987 crop and winery production
1988 Oregon Vineyard Report
This statewide survey report on vineyards in Oregon covers bearing and nonbearing acres, size of vineyard operation, variety and county, size distribution, prices, and yields. The report also contains some comparisons of data for 1987 and 1988. According to this report, Oregon wine grape acreage was up but overall production was down in 1988, the result of a lower yield per acre than in the prior year
1990 Oregon Vineyard Report
This statewide survey report on vineyards in Oregon covers bearing and nonbearing acres, size of vineyard operation, variety and county, size distribution, prices, and yields. The report also contains some comparisons of data for 1989 and 1990. According to this report, Oregon wine grape production was down for the third consecutive year
Mechanisms of declining intra-ethnic trust in newly diverse immigrant destinations [post-print]
Some recent findings suggest that increasing ethnic diversity is associated with declining social cohesion within ethnic groups. Prevailing findings indicate that diversity is connected to declines in some forms of trust but not consistently to declines in participation. I evaluate the extent to which three proposed mechanisms—divergent norms, networks and preferences—might explain this phenomenon. The mechanisms all suggest that diversity contributes to declining in-group trust due to social withdrawal; yet the implied declines in participation are not consistently in evidence. The mismatch between prevailing findings and proposed mechanisms suggests a need to consider alternate explanations for declining trust amidst diversity. Drawing on 286 interviews in four newly diverse US immigrant destinations, I find that increasing diversity reveals in-group cleavages regarding how to respond to the out-group. Among immigrants, differing views on integration foster in-group mistrust. Similarly, among non-immigrants, disagreements over local policies towards foreign-born residents undermine in-group trust. The alternate mechanism proposed here, focusing on how divergent in-group preferences diminish trust, need not be limited to the new immigrant destination context and better explains prevailing findings
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