25,450 research outputs found

    PRODUCTION DECISIONS WITH UNCERTAIN MARKETS: THE CASE OF BT CORN

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    The effect of marketing uncertainty due to consumer opposition over genetically modified (GM) grain is modeled in the context of a producer's decision to plant GM. The model shows that a tendency to plant less GM acreage and obtain premium prices for Non-GM grain is tempered by increased price risk.Crop Production/Industries,

    LAND VALUES AND ENVIRONMENTAL REGULATION

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    Environmental Economics and Policy, Land Economics/Use,

    Aerodynamic characteristics of the 40- by 80/80- by 120-foot wind tunnel at NASA Ames Research Center

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    The design and testing of vane sets and air-exchange inlet for the 40 x 80/80 x 120-ft wind tunnel at NASA Ames are reported. Boundary-layer analysis and 2D and 3D inviscid panel codes are employed in computer models of the system, and a 1/10-scale 2D facility and a 1/50-scale 3D model of the entire wind tunnel are used in experimental testing of the vane sets. The results are presented in graphs, photographs, drawings, and diagrams are discussed. Generally good agreement is found between the predicted and measured performance

    MICROCOMPUTER BUDGET MANAGEMENT SYSTEM

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    The enterprise budget, whole farm cash flow, and income statement are fundamental tools of farm and ranch management. The "Microcomputer Budget Management System" (MBMS) is a microcomputer software package that facilitates the storage and use of information for crop and livestock budgeting. It performs the calculations for several enterprise budgeting formats and for preparation of whole farm resource use reports and financial statements. The MBMS also includes internal machinery and irrigation cost calculation routines. MBMS was developed for use by extension staff, researchers, lenders, consultants, and operators of diversified farms and ranches with many enterprises that use enterprise and whole farm budgeting for analysis and planning activities. The flexibility and detailed nature of the program requires the user to have knowledge of enterprise budgeting and operation of complex computer programs. This paper presents a discussion of the features and capabilities of the software and the computational procedures used in the cost calculations.Research and Development/Tech Change/Emerging Technologies,

    Feed ingredient composition for beef cattle (2005)

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    It is essential to know feedstuff nutrient content in order to properly formulate beef cattle diets. This publication provides estimates of the nutrient composition of feedstuffs that are used commonly in Missouri.Revised October 2005 -- Extension website

    Liquefaction Analysis of Lower San Fernando Darn Using Strength Ratios

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    Olson (2000) evaluated 33 liquefaction flow failure case histories to assess the yield strength ratio and liquefied strength ratio mobilized during the failures. Using back-analysis procedures developed by Olson (2000), yield and liquefied shear strengths are shown to be proportional to the pre-failure vertical effective stress and are related to standard and cone penetration resistances. This paper examines the triggering of liquefaction and subsequent flow failure of Lower San Fernando Dam using yield and liquefied strength ratios. The yield strength ratio is used to correctly predict the occurrence of liquefaction in the upstream hydraulic fill of the dam, and the liquefied shear strength ratio is used to correctly predict the subsequent flow failure of the upstream slope. The relationships for the yield and liquefied ratios are presented, and their application to existing or new structures is illustrated using the Lower San Fernando Dam case history
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