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OPTIMIZED DESIGNS OF FRAMEWORKS AND ELEMENTS IN SPATIAL SAMPLING FOR CROP AREA ESTIMATION
Sampling Techniques Sampling Frame Sampling Efficiency Sample-Square Dimension Sample Size
2015/12/28
The experiments were conducted for monitoring crop area by spatial sampling methods in a winter wheat main production region with a size of 42Km×42Km in Hengshui City, Hebei Province in China to optim...
CROP AREA ESTIMATION USING REMOTE SENSING ON TWO-STAGE STRATIFIED SAMPLING
crop acreage remote sensing stratified sampling
2015/7/29
In this paper, we analyses problems that remote sensing technique met in China. And provide a new methodology on stratified
sampling technique. During the stratification procedure, physical factors,...
Two-stage Benchmarking as Applied to Small Area Estimation
Two-stage Benchmarking as Applied to Small Area Estimation
2013/6/14
There has been recent growth in small area estimation due to the need for more precise estimation of small geographic areas, which has led to groups such as the U.S. Census Bureau, Google, and the RAN...
Spatial Fay-Herriot Models for Small Area Estimation with Functional Covariates
American Community Survey Bayesian hierarchical modeling GoogleTrends Spatial statistics Stochastic search variable selection
2013/4/28
The Fay-Herriot (FH) model is widely used in small area estimation and uses auxiliary information to reduce estimation variance at undersampled locations. We extend the type of covariate information u...
Analysis of Leaflet Shape and Area for Improvement of Leaf Area Estimation Method for Sago Palm (Metroxylon sagu Rottb.)
Leaf area Leaflet Leaflet area Leaflet shape Metroxylon sagu Rottb. Sago palm
2009/7/24
Leaf area of sago palm (Metroxylon sagu Rottb.) can not be estimated accurately from the whole leaf shape, and individual leaflet area must be measured for accurate estimation of leaf area. In this st...
Improving both domain and total area estimation by composition
regional statistics small areas mean square error direct and composite estimators
2009/2/23
In this article we propose small area estimators for both the small and large area parameters. When the objective is to estimate parameters at both levels, optimality is achieved by a sample design th...
Improving small area estimation by combining surveys：new perspectives in regional statistics
composite estimator complementary survey mean squared error official statistics regional statistics small areas
2009/2/23
A national survey designed for estimating a specific population quantity is sometimes used for
estimation of this quantity also for a small area, such as a province. Budget constraints do not allow a...
Groundnut (Arachis hypogaea L.) Leaf Area Estimation Using Allometric Model
Groundnut Leaf area Allometric model k factor
2010/11/9
Allometric relationship (LA = aL W , b c where a, b and c are the parameters) was fitted between the true leaf area and extreme linear measurements viz. length and width of groundnut (Arachis hypogeae...