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Subjects Mathematical modelsx
Displaying items 1 - 20 of 48 start over
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1. A comparison of Box-Jenkins time series forecasts to preliminary milk price estimates
Author(s):
Klugh, Benjamin F. , Markham, John. , United States Dept. of Agriculture. Statistical Reporting Service. Statistical Research Division.
Subject(s):
Time-series analysis , Mathematical models , Milk , Prices , United States , time series analysis , agricultural forecasts , estimation , milk prices
Year:
1985
2. A simulation study to compare procedures which impute for missing items on an ESS hog survey
Author(s):
Ford, Barry L. , Kleweno, Douglas G. , Tortora, Robert D.
Subject(s):
Agricultural surveys , Swine , Simulation methods , Mathematical models , simulation models , surveys
Year:
1980
3. An evaluation of alternative weights for a weighted estimator
Author(s):
Nealon, Jack. , United States Dept. of Agriculture. Statistical Reporting Service. Research Division.
Subject(s):
Agriculture , Economic aspects , Mathematical models , agricultural economics , farm inventories
Year:
1981
4. An evaluation of the sources, accuracy and availability of the input data required to run Feyerherm's winter wheat model and preliminary testing performed by Dr. Feyerherm
Author(s):
Cotter, James J.
Subject(s):
Winter wheat , Mathematical models , winter wheat , mathematical models , Indiana , Kansas , Montana , Ohio
Year:
1982
5. An evaluation of two feedback versions of the Ceres-Maize model
Author(s):
Iwig, William C. , Klugh, Benjamin F. , United States Dept. of Agriculture. Statistical Reporting Service. Statistical Research Division.
Subject(s):
Corn , Yields , Forecasting , Mathematical models , Sampling , Crop yields , Simulation methods , corn , agricultural forecasts , data analysis , sampling , yields , simulation models , mathematical models
Year:
1986
6. Comparison of the CEAS and Thompson-type models for corn yields in Iowa, Illinois, and Indiana
Author(s):
Cotter, James J.
Subject(s):
Corn , Yields , Iowa , Illinois , Indiana , Crop yields , Mathematical models , corn , Zea mays , crop yield , mathematical models
Year:
1984
7. Comparison of the CEAS and Thompson-type models for soybean yields in Iowa, Illinois, and Indiana
Author(s):
Sebaugh, Jeanne L.
Subject(s):
Soybean , Yields , Iowa , Illinois , Indiana , Crop yields , Mathematical models , soybeans , Glycine max , crop yield , mathematical models
Year:
1983
8. Criteria for identifying candidate yield models
Author(s):
AgRISTARS Program
Subject(s):
Crop yields , Mathematical models , crop yield , yield monitoring , agricultural management models
Year:
1980
9. Cross-commodity analysis of China's grain sector : sources of growth and supply response
Author(s):
Colby, Hunter. , Diao, Xinshen. , Somwaru, Agapi. , United States Dept. of Agriculture. Economic Research Service.
Subject(s):
Grain trade , China , Mathematical models , Agricultural productivity , grain products , agricultural industry
Year:
2000
10. Determinants of financial performance of commercial dairy farms
Author(s):
El-Osta, Hisham S. , Johnson, James 1950-
Subject(s):
Dairy farms , Economic aspects , United States , Mathematical models , dairy farm management , dairy farming , economic analysis
Year:
1998
11. Evaluation of crop yield models
Author(s):
Wilson, Wendell W.
Subject(s):
Crop yields , Mathematical models , Evaluation , crop yield , model validation
Year:
1984
12. Evaluation of small area crop estimation techniques using Landsat- and ground-derived data
Author(s):
Amis, M. L. , United States Dept. of Agriculture. , AgRISTARS (U.S.) , Lockheed Engineering and Management Services Company , Lyndon B. Johnson Space Center , United States National Aeronautics and Space Administration.
Subject(s):
Agricultural estimating and reporting , United States , Mathematical models , Crop yields , estimation , crop yield , Landsat , cluster analysis , regression analysis , spectral analysis
13. Evaluation of the CEAS trend and monthly weather data models for corn yields in Iowa, Illinois, and Indiana
Author(s):
Kestle, Richard A. , United States Dept. of Agriculture. Statistical Reporting Service. Statistical Research Division.
Subject(s):
Meteorology, Agricultural , Iowa , Mathematical models , Illinois , Indiana , Crops and climate , Crop yields , Corn , agrometeorology , climate models , crop yield , corn , Zea mays , mathematical models , model validation , crop models , regression analysis
Year:
1982
14. Evaluation of the CEAS trend and monthly weather data models for spring wheat yields in North Dakota and Minnesota
Author(s):
Sebaugh, Jeanne L.
Subject(s):
Wheat , Yields , North Dakota , Minnesota , Meteorology, Agricultural , Mathematical models , Crops and climate , Crop yields , spring wheat , Triticum , agrometeorology , climate models , crop yield , mathematical models , model validation , crop models , regression analysis
Year:
1981
15. Evaluation of the Feyerherm '81 spring wheat models for estimating yields in North Dakota and Minnesota
Author(s):
Sebaugh, Jeanne L. , United States Dept. of Agriculture. Statistical Reporting Service. Statistical Research Division.
Subject(s):
Wheat , North Dakota , Mathematical models , Minnesota , Crop yields , Regression analysis , Evaluation , Crops and climate , spring wheat , crop models , crop yield , agrometeorology , regression analysis
Year:
1983
16. Food stamp program entry and exit : an analysis of participation trends in the 1990s
Author(s):
Cody, Scott. , United States Dept. of Agriculture. Economic Research Service. , Mathematica Policy Research, Inc
Subject(s):
Food stamps , United States , Mathematical models , Supplemental Nutrition Assistance Program
Year:
2005
17. Forecasting consumer price indexes for food : a demand model approach
Author(s):
Huang, Kuo S. , United States Dept. of Agriculture. Economic Research Service.
Subject(s):
Food prices , United States , Forecasting , Mathematical models , food prices , mathematical models , agricultural forecasts
Year:
2000
18. Improving grain stocks estimates from the June enumerative survey
Author(s):
Nealon, Jack. , United States Dept. of Agriculture. Statistical Reporting Service. Statistical Research Division.
Subject(s):
Grain , Storage , United States , Mathematical models , Agricultural estimating and reporting , grain crops , storage , agricultural statistics
Year:
1982
19. Improving the income allocation procedures in MATH
Author(s):
Doyle, Pat. , Trippe, Carole. , United States Food and Nutrition Service. , Mathematica Policy Research, Inc
Subject(s):
Food stamps , United States , Mathematical models , Poverty , Income distribution , Supplemental Nutrition Assistance Program , income distribution , mathematical models , poverty
Year:
1992
20. Investigations of stream-aquifer interactions using a coupled surface-water and ground-water flow model
Author(s):
Vionnet, Leticia Beatriz. , Maddock, Thomas. , Goodrich, David Charles. , University of Arizona Dept. of Hydrology and Water Resources.
Subject(s):
Groundwater flow , Arizona , Bill Williams River , Simulation methods , Mathematical models , stream flow , aquifers , surface water , simulation models
Year:
1997