Results 11 to 20 of about 15,502,740 (246)
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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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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Exploring the design applications of key emerging materials from natural sciences through a design ideation workshop [PDF]
, 2023 10th Congress of the International Association of Societies of Design Research (IASDR 2023) 9-13 October 2023, Milan, Italy202405 bcchVersion of ...
Wang, X +15 more
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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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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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On the optimality of chemical balance weighing designs
Journal of Statistical Planning and Inference, 1983 Optimality of chemical balance weighing designs is considered in this paper. The authors have used a ternary design matrix \(X_ d\in C(N,n)\) for \(N\geq n\) with entries -1,0,1. The authors have chosen the optimality criteria of type I as defined by \textit{C.-S. Cheng} in Ann. Stat. 8, 436- 446 (1980; Zbl 0425.62055).
Jacroux, Mike +2 more
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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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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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Optimum Chemical Balance Weighing Design under Certain Condition [PDF]
, 2009 The problem of estimation of unknown weights of p objects is considered. The experiment is carried out according to the standard Gauss-Markoff model of the chemical balance weighing design. Existence conditions of the optimum design are given.
Ceranka, Bronislaw, Graczyk, Malgorzata
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