Wszystkie pola: weighing - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Optimum chemical balance weighing designs under the restriction on weighings
Autorzy:: Ceranka, Bronisław
Graczyk, Małgorzata
Powiązania:: https://bibliotekanauki.pl/articles/729902.pdf
Data publikacji:: 2001
Wydawca:: Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:: chemical balance weighing design
ternary balanced block design
Opis:: The paper deals with the problem of estimating individual weights of objects, using a chemical balance weighing design under the restriction on the number in which each object is weighed. A lower bound for the variance of each of the estimated weights from this chemical balance weighing design is obtained and a necessary and sufficient condition for this lower bound to be attained is given. The incidence matrix of ternary balanced block design is used to construct optimum chemical balance weighing design under the restriction on the number in which each object is weighed.
Źródło:: Discussiones Mathematicae Probability and Statistics; 2001, 21, 2; 111-120
1509-9423
Pojawia się w:: Discussiones Mathematicae Probability and Statistics
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Optimum chemical balance weighing designs with diagonal variance-covariance matrix of errors
Autorzy:: Ceranka, Bronisław
Graczyk, Małgorzata
Powiązania:: https://bibliotekanauki.pl/articles/729748.pdf
Data publikacji:: 2004
Wydawca:: Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:: balanced bipartite weighing design
chemical balanceweighing design
Opis:: 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 the number of objects placed on the right and left pans, respectively. We want all variances of estimated measurments to be equal and attaining their lower bound. We give a necessary and sufficient condition under which this lower bound is attained by the variance of each of the estimated measurements. To construct the design matrix X of the considered optimum chemical balance weighing design we use the incidence matrices of balanced bipartite weighing designs.
Źródło:: Discussiones Mathematicae Probability and Statistics; 2004, 24, 2; 215-232
1509-9423
Pojawia się w:: Discussiones Mathematicae Probability and Statistics
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: A note on the relations between two ternary balanced block designs and chemical balance weighing designs
Autorzy:: Ambroży, Katarzyna
Ceranka, Bronisław
Powiązania:: https://bibliotekanauki.pl/articles/729882.pdf
Data publikacji:: 2001
Wydawca:: Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:: chemical balance weighing design
ternary balanced block desig
Opis:: The paper studied the problem of estimating of the weights of p objects in n weighings using a chemical balance weighing design under the restriction on the number of objects which can be placed on the right and left pans, respectively. Conditions under which the estimated weights are uncorrelated are given. The incidence matrices of two ternary balanced block designs which are used to construct chemical balance weighing designs satisfying these conditions are considered.
Źródło:: Discussiones Mathematicae Probability and Statistics; 2001, 21, 1; 5-10
1509-9423
Pojawia się w:: Discussiones Mathematicae Probability and Statistics
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: Some observations on the constructions of chemical balance weighing designs
Autorzy:: Mohan, Ratnakaram
Ceranka, Bronisław
Kageyama, Sanpei
Powiązania:: https://bibliotekanauki.pl/articles/729898.pdf
Data publikacji:: 2001
Wydawca:: Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:: ptimum chemical balance weighing design
BIB design
ARBIB design
μ-ARBIB design
Opis:: The construction of some optimum chemical balance weighing designs from affine μ-resolvable balanced incomplete block (BIB) designs are discussed in the light of a characterization theorem on the parameters of affine μ-resolvable BIB designs as given by Mohan and Kageyama (1982), for the sake of practical use of researchers who need some selective designs for the construction of chemical balance weighing designs.
Źródło:: Discussiones Mathematicae Probability and Statistics; 2001, 21, 2; 99-110
1509-9423
Pojawia się w:: Discussiones Mathematicae Probability and Statistics
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 5.

Tytuł:: More on Signed Graphs with at Most Three Eigenvalues
Autorzy:: Ramezani, Farzaneh
Rowlinson, Peter
Stanić, Zoran
Powiązania:: https://bibliotekanauki.pl/articles/32222534.pdf
Data publikacji:: 2022-11-01
Wydawca:: Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:: adjacency matrix
simple eigenvalue
strongly regular signed graph
vertex-deleted subgraph
weighing matrix
association scheme
Opis:: We consider signed graphs with just 2 or 3 distinct eigenvalues, in particular (i) those with at least one simple eigenvalue, and (ii) those with vertex-deleted subgraphs which themselves have at most 3 distinct eigenvalues. We also construct new examples using weighing matrices and symmetric 3-class association schemes.
Źródło:: Discussiones Mathematicae Graph Theory; 2022, 42, 4; 1313-1331
2083-5892
Pojawia się w:: Discussiones Mathematicae Graph Theory
Dostawca treści:: Biblioteka Nauki

Artykuł

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