This paper proposes a new product-type estimator which is complementary, in a certain sense, to the commonly used ratio estimator. Exact formulae for the bias and ...
An international team of researchers, led by UMass Amherst biostatistician Leontine Alkema and her former Ph.D. student Fengqing Chao, developed a new estimation method for assessing natural ...
Groundwater is an important source for clean drinking water and vital to human and ecological health. Its importance will continue to rise with increasing population and associated demands by ...
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