Results 11 to 20 of about 7,340,270 (237)
Acta et Commentationes Universitatis Tartuensis de Mathematica, 2004 The paper is studying the estimation problem of individual weights of objects using the chemical balance weighing design under the restriction on the number of times in which each object is weighed. Additionally, we assume that the errors are uncorrelated and they have different variances.
Ceranka, Bronisław +1 more
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Some D-optimal chemical balance weighing designs: theory and examples [PDF]
Biometrical Letters, 2017 Summary In this paper we study a certain kind of experimental designs called chemical balance weighing designs. We consider issues with regard to determining optimality conditions. We give new classes of designs in which we are able to determine an optimal design. Moreover, examples are given for the presented cases.
Bronisław Ceranka, Małgorzata Graczyk
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Selected Remarks on Highly D‑efficient Spring Balance Weighing Designs [PDF]
, 2021 Here, we consider a new construction method of determining highly D-efficient spring balance weighing designs in classes in which a D-optimal design does not exist.
Ceranka, Bronisław +3 more
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On Highly D-Efficient Designs with Nonnegatively Correlated Observations
Revstat Statistical Journal, 2017 In the most difficult case where the number of observations n ≡ 3 (mod 4), high D-efficiency of certain chemical balance weighing designs under completely symmetric covariance matrix of errors is shown. It is also proved that D-optimal design may depend
Krystyna Katulska , Lukasz Smaga
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Robustness optimal spring balance weighing designs for estimation total weight [PDF]
, 1986 summary:In this paper we develop the theory of spring balance weighing designs with non-positive correlated errors for that the lower bound of the variance of estimated total weight is ...
B. Ceranka +3 more
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A-optimal chemical balance weighing design under certain condition
Advances in Methodology and Statistics, 2007 The paper is studying the estimation problem of individual weights of \(p\) objects using the design matrix \(\mathbf{X}\) of the A-optimal chemical balance weighing design under the restriction \(p_1 + p_2 = q \leq p\), where \(p_1\) and \(p_2\) represent the number of objects placed on the left pan and on the right pan, respectively, in each of the ...
Ceranka, Bronisław +1 more
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A-optimal biased spring balance weighing design [PDF]
, 2011 summary:In this paper we study the problem of estimation of individual measurements of objects in a biased spring balance weighing design under assumption that the errors are uncorrelated and they have different variances.
Graczyk, Małgorzata
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An expression for land surface water storage monitoring using a two-formation geological weighing lysimeter [PDF]
, 2007 Field studies have demonstrated that ground surface rainfall accumulation can be detected at depth by synchronous increases in static confined groundwater pore pressures.
Bardsley, W. Earl, Campbell, David I.
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Optimum chemical balance weighing designs with diagonal variance-covariance matrix of errors [PDF]
, 2004 In this paper we study the estimation problem of individual measurements (weights) of objects in a model of chemical balance weighing design with diagonal variance - covariance matrix of errors under the restriction k₁ + k₂ < p, where k₁ and k₂ represent
Ceranka, Bronisław +1 more
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D-optimal and highly D-efficient designs with non-negatively correlated observations [PDF]
, 2016 summary:In this paper we consider D-optimal and highly D-efficient chemical balance weighing designs. The errors are assumed to be equally non-negatively correlated and to have equal variances.
Katulska, Krystyna, Smaga, Łukasz
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