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    Wyświetlanie 1-6 z 6
    Tytuł:
    Some remarks on evaluating the quality of the multiple sequence alignment based on the BAliBASE benchmark
    Autorzy:
    Błażewicz, J.
    Formanowicz, P.
    Wojciechowski, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/930013.pdf
    Data publikacji:
    2009
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    dostosowanie odniesienia
    dokładność ustawienia
    multiple sequence alignment
    reference alignment
    alignment accuracy
    Opis:
    BAliBASE is one of the most widely used benchmarks for multiple sequence alignment programs. The accuracy of alignment methods is measured by bali score-an application provided together with the database. The standard accuracy measures are the Sum of Pairs (SP) and the Total Column (TC). We have found that, for non-core block columns, results calculated by bali score are different from those obtained on the basis of the formal definitions of the measures. We do not claim that one of these measures is better than the other, but they are definitely different. Such a situation can be the source of confusion when alignments obtained using various methods are compared. Therefore, we propose a new nomenclature for the measures of the quality of multiple sequence alignments to distinguish which one was actually calculated. Moreover, we have found that the occurrence of a gap in some column in the first sequence of the reference alignment causes column discarding.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2009, 19, 4; 675-678
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    New machine learning methods for prediction of protein secondary structures
    Autorzy:
    Błażewicz, J.
    Łukasiak, P.
    Wilk, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/969728.pdf
    Data publikacji:
    2007
    Wydawca:
    Polska Akademia Nauk. Instytut Badań Systemowych PAN
    Tematy:
    machine learning
    prediction of protein structures
    LAD
    LEM2
    MODLEM
    Opis:
    The first and probably the most important step in predicting the tertiary structure of proteins from its primary structure is to predict as many as possible secondary structures in a protein chain. Secondary structure prediction problem has been known for almost a quarter of century. In this paper, new machine learning methods such as LAD, LEM2, and MODLEM have been used for secondary protein structure prediction with the aim to choose the best among them which will be later parallelized in order to handle a huge amount of data sets.
    Źródło:
    Control and Cybernetics; 2007, 36, 1; 183-201
    0324-8569
    Pojawia się w:
    Control and Cybernetics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Simplified mashing efficiency. Novel method for optimization of food industry wort production with the use of adjuncts
    Autorzy:
    Szwed, Ł. P.
    Tomaszewska-Ciosk, E.
    Błażewicz, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/779962.pdf
    Data publikacji:
    2014
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    mathematic optimization
    mashing effi ciency
    wort production
    malt concentrates for food industry
    Opis:
    Malt extracts and malt concentrates have a broad range of application in food industry. Those products are obtained by methods similar to brewing worts. The possible reduction of cost can be achieved by application of malt substitutes likewise in brewing industry. As the malt concentrates for food industry do not have to fulfill strict norms for Beer production it is possible to produce much cheaper products. It was proved that by means of mathematic optimization it is possible to determine the optimal share of unmalted material for cheap yet effective production of wort.
    Źródło:
    Polish Journal of Chemical Technology; 2014, 16, 3; 36-39
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of sprinkler irrigation and nitrogen fertilization on the quality of malt and wort from barley grains
    Autorzy:
    Błażewicz, J.
    Żarski, J.
    Dudek, S.
    Kuśmierek-Tomaszewska, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/101297.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
    Tematy:
    malting barley
    sprinkler irrigation
    nitrogen fertilization
    malt
    wort
    simplified mashing efficiency
    Opis:
    The aim of the research was the evaluation of sprinkler irrigation and nitrogen fertilization on some selected features of the quality of malt and wort from ‘Marthe’ and ‘Mauritia’ malting barley grains. The field experiment was carried out in the years 2010-2012 at the Research Station of the University of Science and Technology in Mochełek near Bydgoszcz. As a result of 3-year field experiment and laboratory test of grain, malt and wort, it was found that introducing sprinkler irrigation into the production process of malting barley is a step justified by the obtained quality effects. It was found that in the case of irrigated malting barley cultivations nitrogen fertilization at the rate of 30 kg·ha-1 provides (in relation to control, non-irrigated treatment) the highest values of such parameters as weight of the technical barley crops, content of protein, extractivity of Pilsen type malt, amount of obtained wort and simplified mashing efficiency. The combination of sprinkler irrigation of malting barley plants with their nitrogen fertilization at the increased rates of 60 and 90 kg·ha-1, resulted in the following effect – high mass of the usable grain of crops remained but their quality deteriorated. Malt produced from malting barley fertilized with nitrogen at the rates of 60 and 90 kg·ha-1, in spite of applied sprinkler irrigation, was characterized by unacceptable – from the technological point of view - increased content of protein in malt in the amount of over 11.5% d.m., as well as huge decrease in malt extractivity (even by 2%) and lower, simplified mashing efficiency (below 70%).
    Źródło:
    Infrastruktura i Ekologia Terenów Wiejskich; 2017, IV/1; 1469-1481
    1732-5587
    Pojawia się w:
    Infrastruktura i Ekologia Terenów Wiejskich
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Internet shopping optimization problem
    Autorzy:
    Błażewicz, J.
    Kovalyov, M. Y.
    Musiał, J.
    Urbański, A. P.
    Wojciechowski, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/907755.pdf
    Data publikacji:
    2010
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    algorytm
    złożoność obliczeniowa
    algorytm kombinatoryczny
    optymalizacja
    zakupy internetowe
    algorithm
    computational complexity
    combinatorial algorithms
    optimization
    Internet shopping
    Opis:
    A high number of Internet shops makes it difficult for a customer to review manually all the available offers and select optimal outlets for shopping. A partial solution to the problem is brought by price comparators which produce price rankings from collected offers. However, their possibilities are limited to a comparison of offers for a single product requested by the customer. The issue we investigate in this paper is a multiple-item multiple-shop optimization problem, in which total expenses of a customer to buy a given set of items should be minimized over all available offers. In this paper, the Internet Shopping Optimization Problem (ISOP) is defined in a formal way and a proof of its strong NP-hardness is provided. We also describe polynomial time algorithms for special cases of the problem.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2010, 20, 2; 385-390
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    On the complexity of the Double Digest Problem
    Autorzy:
    Błażewicz, J.
    Burke, E.
    Jaroszewski, M.
    Kasprzak, M.
    Paliswiat, B.
    Pryputniewicz, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/970429.pdf
    Data publikacji:
    2004
    Wydawca:
    Polska Akademia Nauk. Instytut Badań Systemowych PAN
    Tematy:
    złożoność obliczeniowa
    computational complexity
    DNA restriction maps
    Opis:
    The problem of genome mapping is considered. It is showed that the Double Digest Problem (DDP) is NP-hard in its search version, while its decision version is trivially easy.
    Źródło:
    Control and Cybernetics; 2004, 33, 1; 133-140
    0324-8569
    Pojawia się w:
    Control and Cybernetics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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