9,166 research outputs found

    Demonstrations of Arkansas\u27 Water Management Simulator

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    One of the larger stumbling blocks to comprehensive water management is the lack of public understanding of the multitude of variables that operate at the same time within the hydrologic cycle. With more public understanding, there is greater public support for various water projects. Dr. John R. Amend from Montana State University developed a water management simulator which could handle a large number of variables simultaneously of natural surface and groundwater flow plus a number of water use variables on an accelerated time sequence. By using several remote control devices, participants can control their water use but have no control over other participants competing for the same water molecule. The purpose of this information transfer project was to demonstrate the use of the water management simulator and to begin to develop experienced teams of people from government agencies and academia to explain its operation to local professional and civic groups. The interest level is very high for the team members to learn about the operation of the water management simulator. The simulator demonstrations have been well received by various audiences

    Seasonal adjustment of the money supply

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    Seasonal variations (Economics) ; Business cycles

    Letter from Clifton E. Mack to Representative Burdick Regarding the Request of Three Affiliated Tribes Members for Ferry to Cross the Lake Created by the Garrison Dam, May 22, 1957

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    This letter, dated May 22, 1957, from Acting Commissioner Clifton E. Mack to United States (US) Representative Usher Burdick responds to Burdick\u27s request for barges for use by the Three Affiliated Tribes to cross the Garrison Reservoir which has broken up their reservation and make transportation difficult. Mack informs Burdick that several members from the tribe met with his office on May 10. Inquiries are currently being made about barges through the US Bureau of Indian Affairs and the US Department of the Interior. Mack says that he will keep Burdick informed as progress is made. See also: Letter from Representative Burdick to Special Assistant for Legislative Liaison Regarding Need for Barges to Ferry Three Affiliated Tribe Members Across the Lake Created by the Garrison Dam, May 10, 1957 Letter from Representative Burdick to Clifton E. Mack Regarding Need for Barge to Ferry Trucks Across the Lake Created by the Garrison Dam, May 22, 1957https://commons.und.edu/burdick-papers/1346/thumbnail.jp

    Evaluation of a Conducting-Paper Analog Field Plotter as an Aid in Solving Ground-Water Problems

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    Simple and rapid solutions of complex ground-water flow problems are desirable, Known analogies with fluid flow offer a means to overcome difficult problems with relatively little effort. A potentiometric model called a conducting-paper analog field plotter was chosen to utilize the analogy between fluid flow and electric current conduction. Electrical theory and model experiments show that the plotter cannot be applied accurately to any three-dimensional, steady-state, ground-water flow problems, Two-dimensional studies can be accomplished readily with the plotter, but other devices will have to be utilized for radial flow problems

    Ephemeral Hinterlands and the Historical Geography of Trujillo, Honduras, 1525-1950.

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    The historical geography of Trujillo, Honduras is told through its changing hinterlands. This dissertation uses world systems to approach and understand the historical geography of Trujillo, however, the focus is on this peripheral area of the world system, rather than on the core. The coast of the western Caribbean experiences economic boom and bust cycles. The periodization of Trujillo\u27s historical geography is based on the city\u27s boom and bust periods, using primary documents from archives in Central America and Spain. Trujillo\u27s first boom period lasted from its founding in 1525 until 1550, based on gold exports from the interior. During this time many Old World plants and animals were introduced into Honduras through Trujillo. The native population declined rapidly from disease, overwork, warfare, and many simply fled. From 1550 to the 1640s, the people of Trujillo searched for an alternative product to replace gold, largely relying on sarsaparilla and hides, but to no avail. In the 1640s Trujillo suffered its worst pirate attacks, and was slowly abandoned by 1683. From the 1730s until 1782, Trujillo was a major center for contraband trade. Reoccupied in 1782, Trujillo became a center for colonization, but the Spanish colonists were maladapted to the environment and most of them died. The Black Caribs, deported from their homeland to the Honduran coast, came in similar numbers but were preadapted to the environment and flourished. The foreland for the port changed as trade opened up with Cuba, Great Britain, and the United States, which would eventually dominate the trade. Banana exports began in the late 1800s, and the United Fruit Company gained the concession to build a railroad to service Trujillo. Banana exports reached a peak in the early 1930s, then fell to almost zero by 1940, as banana diseases struck the plantations. Trujillo may be entering a new boom period based on tourism, but there are plans to build an oil refinery at the port. The growing highway network in Honduras, combined with the movement of the frontier of settlement, may create a more permanent hinterland for Trujillo
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