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Wyszukujesz frazę "Koczkodaj, W. W." wg kryterium: Autor


Wyświetlanie 1-4 z 4
Tytuł:
The limit of inconsistency reduction in pairwise comparisons
Autorzy:
Koczkodaj, W. W.
Szybowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/330335.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
pairwise comparison
inconsistency reduction
convergence limit
decision making
porównanie parami
redukcja niezgodności
granica konwergencji
podejmowanie decyzji
Opis:
This study provides a proof that the limit of a distance-based inconsistency reduction process is a matrix induced by the vector of geometric means of rows when a distance-based inconsistent pairwise comparisons matrix is transformed into a consistent PC matrix by stepwise inconsistency reduction in triads. The distance-based inconsistency indicator was defined by Koczkodaj (1993) for pairwise comparisons. Its convergence was analyzed in 1996 (regretfully, with an incomplete proof) and finally completed in 2010. However, there was no interpretation provided for the limit of convergence despite its considerable importance. This study also demonstrates that the vector of geometric means and the right principal eigenvector are linearly independent for the pairwise comparisons matrix size greater than three, although both vectors are identical (when normalized) for a consistent PC matrix of any size.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2016, 26, 3; 721-729
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Generating placated random shapes for an area estimation study
Autorzy:
Almowanes, A.
Kakiashvili, T.
Koczkodaj, W. W.
Powiązania:
https://bibliotekanauki.pl/articles/123002.pdf
Data publikacji:
2013
Wydawca:
Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej
Tematy:
image processing
Gaussian blur
random polygon
computational geometry
cognitive process
software testing
przetwarzanie obrazów
geometria obliczeniowa
proces poznawczy
testowanie oprogramowania
Opis:
Random but visually nice shapes are often needed for cognitive experiments and processes. This study describes a heuristic for generating random but nice shapes. We call them placated shapes. These shapes are produced by applying the Gaussian blur to randomly generated polygons. Subsequently, the threshold is set to transform pixels to black and white from different shades of gray. This transformation produces placated shapes for easier estimation of areas. Randomly generated placated shapes are used for testing the accuracy of cognitive processes by pairwise comparisons. They can also be used in many other areas such as computer games or software testing. Such shapes could also be used for camouflaging heavy army equipment.
Źródło:
Journal of Applied Mathematics and Computational Mechanics; 2013, 12, 2; 5-13
2299-9965
Pojawia się w:
Journal of Applied Mathematics and Computational Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
How to support government procurement by a pairwise comparisons model
Autorzy:
Koczkodaj, W. W.
Mackasey, W. O.
Smolewski, I.
Tadeusiewicz, R.
Powiązania:
https://bibliotekanauki.pl/articles/93060.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Przyrodniczo-Humanistyczny w Siedlcach
Tematy:
government procurement
project proposal assessment
pairwise comparison
distance-based inconsistency
convergence
knowledge management
Opis:
This study demonstrates how a government procurement process could be improved by the pairwise comparisons method. A case study, related to assessment of project proposals is used for demonstration purpose. The project proposals were requested by a Canadian government agency to assess the environmental and public safety hazards of abandoned mines. However, the presented model is applicable (with easy-to-implement modifications) to any other case of government procurement.
Źródło:
Studia Informatica : systems and information technology; 2013, 1-2(17); 19-28
1731-2264
Pojawia się w:
Studia Informatica : systems and information technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Methyl jasmonate elicitation affects expression of genes involved in biosynthesis and turnover of 2-phenylethylamine in maize seedlings
Autorzy:
Sytykiewicz, H.
Horbowicz, M.
Wiczkowski, W.
Koczkodaj, D.
Mitrus, J.
Sawicki, T.
Slawianowska, J.
Szwed, M.
Powiązania:
https://bibliotekanauki.pl/articles/19460.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:
The objective of the study was to assess the influence of methyl jasmonate (MJ) vapors on accumulation of 2-phenylethylamine (PEA), phenylacetic acid (PAA) and 2-phenylethanol (PE) in leaves and roots of maize (Zea mays L. subsp. mays, saccharata group, cv. Złota Karłowa) seedlings. Furthermore, we analyzed the expression patterns of eight genes (ADH1, ADH2, AO2, CAO, PDC1, PDC2, PTA and LOX, encoding alcohol dehydrogenase 1 and 2, primary amine oxidase, aldehyde oxidase 2, phenylalanine decarboxylase 1 and 2, phenylalanine (histidine) transaminase and lipoxygenase, respectively) involved in biosynthesis and turnover of PEA in maize tissues. In addition, the effect of MJ application on fresh biomass and growth of the tested seedlings was recorded. Oneday MJ exposure increased the fresh weight of aerial parts and roots of Z. mays seedlings, whereas the opposite tendency occurred after 4-day of MJ treatment. One-day application of MJ resulted in an increase in the length of roots and its fluctuations in the aerial parts of maize plants, but extended exposure declined the growth of both parts of the seedlings. Methyl jasmonate elicitation caused various changes in the contents of PEA, PAA and PE in the maize seedlings. MJ treatments led to high upregulation of most genes, with the exception of three genes (i.e., ADH1, ADH2 and AO2) whose expression was downregulated after a 4-day exposure.
Źródło:
Acta Biologica Cracoviensia. Series Botanica; 2016, 58, 1
0001-5296
Pojawia się w:
Acta Biologica Cracoviensia. Series Botanica
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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