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    Wyświetlanie 1-4 z 4
    Tytuł:
    A Goal Programming-Monte Carlo Simulation Methodology for Modeling Process Quality Control
    Autorzy:
    Morán-Zabala, Jean P.
    Cogollo-Flórez, Juan M.
    Powiązania:
    https://bibliotekanauki.pl/articles/24200525.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    goal programming
    Monte Carlo simulation
    process optimization
    process simulation
    process quality profiling
    quality control modeling
    Opis:
    Quality profiling seeks to know the quality characteristics of products and processes to improve customer satisfaction and business competitiveness. It is required to develop new techniques and tools that upgrade and complement the traditional analysis of process variables. This article proposes a new methodology to model quality control of the process and product quality characteristics by applying optimization and simulation tools. The application in the production process of carbonated beverages allowed us to identify the most influential variables on the gas content and the degrees Brix of beverage.
    Źródło:
    Management and Production Engineering Review; 2023, 14, 2; 70--78
    2080-8208
    2082-1344
    Pojawia się w:
    Management and Production Engineering Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Combined monitoring and time-frequency analysis for transients in wind energy systems
    Autorzy:
    Łobos, T.
    Sikorski, T.
    Amarís, H
    Alonso, M
    Florez, D
    Powiązania:
    https://bibliotekanauki.pl/articles/1395766.pdf
    Data publikacji:
    2010
    Wydawca:
    Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
    Tematy:
    power quality monitoring
    wind energy
    wind power plant
    Opis:
    The aim of this paper is the application of selected time-varying power quality indices combined with detailed time-frequency analysis for assessment of transients in wind energy system. Presented proposition utilizes short-term harmonic distortion in voltage (STHDV) characteristic as an indicator for detail local time-frequency analysis of the transients. Introduced ideas can be treated as hybrid system absorbing both power quality indices and time-frequency representation.
    Źródło:
    Computer Applications in Electrical Engineering; 2010, 8; 261-269
    1508-4248
    Pojawia się w:
    Computer Applications in Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Identifying the oldest larva of a myrmeleontiformian lacewing-a morphometric approach
    Autorzy:
    Herrera-Florez, A.F.
    Braig, F.
    Haug, C.
    Neumann, C.
    Wunderlich, J.
    Hornig, M.K.
    Haug, J.T.
    Powiązania:
    https://bibliotekanauki.pl/articles/2082151.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    Insecta
    Myrmeleontidae
    Ascalaphidae
    compression fossil
    fossil larva
    Cretaceous
    Crato Formation
    Brazil
    Opis:
    Neuroptera is one of the smaller ingroups of Holometabola, the ingroup of Insecta characterised by “complete” metamorphosis. Neuroptera comprises about 6000 species in the modern fauna, but appears to have been more diverse in the past. While adults distantly resemble certain moths or damselflies, the larval forms of Neuroptera are mostly fierce predators with prominent venom-injecting stylets. The most well-known of these larvae are probably those of antlions. Antlions and their closer relatives (silky lacewings, split-footed lacewings, ribbon-winged lacewings, spoon-winged lacewings, and owlflies) form a distinct monophyletic ingroup of Neuroptera, Myrmeleontiformia, hence the antlion-like forms. The fossil record of antlion-like larvae dates back far into the Cretaceous; many forms are known by exceptionally wellpreserved specimens entrapped in amber. The oldest fossil record of a neuropteran larva (not an antlion-like form) comes from Lebanese amber. Interestingly, the supposedly oldest record of an antlion-like larva is preserved in rock and comes from the famous Lower Cretaceous Crato Formation. We re-evaluate this fossil based on high-resolution composite photography. Due to the non-availability of many key characters, standard procedures for identifying the specimen to a more narrow ingroup remains challenging. Therefore, we used a morphometric approach. A combination of non-metric multidimensional scaling (NMDS), parallel coordinate plots and discriminant function analysis indicates that the fossil is a representative of the group Ascalaphidae (owlflies) + Myrmeleontidae (antlions). We discuss implications of this result for the fossil record of neuropteran larvae. These include the rather derived morphology of the oldest fossil larva of Myrmeleontiformia in contrast to previous expectations. Furthermore, fossils from soil dwellers can not only be expected to be found in amber, but also as compression fossils.
    Źródło:
    Acta Palaeontologica Polonica; 2020, 65, 2; 235-250
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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