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Now showing items 491-500 of 549
The influence of nutria on aquatic vegetation and waterfowl in East Texas
(1980)
The food habits of nutria (Myocastor coypu) and the possible effects of their feeding activities on aquatic vegetation and waterfowl were investigated from April 1977 through April 1979. Study areas were established on ...
Fracture diagram for stiffened panel and computer based approach for structural life prediction
(1980)
Over the past few decades the aircraft industry has devoted considerable effort incorporating fracture control procedures in the design of their structures. One of the problems confronting aircraft designers is the modeling ...
The effectiveness of operation lifesaver in reducing railroad-highway grade crossing accidents
(1980)
Operation Lifesaver is an education, enforcement, and engineering program designed to reduce accidents at railroad-highway grade crossings. There are more than 400,000 public and private grade crossings in the United States, ...
A study of factors attracting American tourists to Thailand
(1980)
This exploratory study focuses on identifying the attracting and detracting features in Thailand as perceived by different groups of American tourists. The questionnaire was mailed to a sample of American tourists who ...
Desmids of east Texas
(1980)
The desmid populations at 217 locations in 27 counties of the Oak-Hickory-Pine Forest Vegetation Region of east Texas have been studied; 284 species, 63 additional varieties, 11 additional forms were identified in this ...
A study of the zooplankton assemblage of San Antonio Bay, Texas, and of the effects of river inflow on the composition and the persistence of this assemblage
(1980)
The composition and abundance of the zooplankton community in San Antonio Bay were studied. Particular attention was paid to the occurrences and densities of selected taxa and to the effects of floods on this zooplankton ...
Impact of alternative energy prices, tenure arrangements and irrigation technologies on a typical Texas high plains farm firm
(1980)
Irrigation is a major contributing factor in crop production on the Texas High Plains. It is responsible for greatly increasing crop production and farm income for the region. Two factors, a declining groundwater supply ...
An algorithm for large-scale nonliner knapsack : problems and extensions
(1980)
In this dissertation, an algorithm was developed to solve large scale discrete nonlinear knapsack problems (NKP) with multiple resource constraints. The algorithm is essentially a dynamic programming technique in a sense ...
The evaluation of coastal zone management and its ramifications for international transfer : United States - Australia
(1980)
As suggested by the title, this project had two distinct thrusts; namely, an evaluation of coastal zone management (CZM) in the United States, and also, after establishing the status of CZM in Australia, a determination ...
Identification and forecasting of the potential for the occurrence of extended-range VHF-UHF transhorizon propagation from synoptic-scale data
(1980)
An objective method is presented for identification of tropospheric areas with a potential for supporting extended-range VHF-UHF transhorizon propagation (ERTP), and for forecasting the potential for changes in this structure ...