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    Wyświetlanie 1-5 z 5
    Tytuł:
    Coordianate measurment systems CMM and CMA – characteristic and methods of their accuracy evaluation
    Autorzy:
    Kupiec, M
    Powiązania:
    https://bibliotekanauki.pl/articles/103289.pdf
    Data publikacji:
    2012
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    coordinate measurements
    CMM
    CMA
    accuracy
    Opis:
    The article presents the conception of coordinate measurement. The characteristic of two systems (Coordinate Measuring Machine – CMM and Coordinate Measuring Arm – CMA) which are based on this measurement is also shown. Further on their construction, working principle, application, advantages and disadvantages are described. Finally, the methods of accuracy evaluation of these devices are presented and compared.
    Źródło:
    Advances in Science and Technology. Research Journal; 2012, 6, 16; 18-23
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparative Study of PSO and CMA-ES Algorithms on Black-box Optimization Benchmarks
    Autorzy:
    Szynkiewicz, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/307566.pdf
    Data publikacji:
    2018
    Wydawca:
    Instytut Łączności - Państwowy Instytut Badawczy
    Tematy:
    benchmarking
    black-box optimization
    CMA-ES
    global optimization
    PSO
    stochastic optimization
    Opis:
    Numerous practical engineering applications can be formulated as non-convex, non-smooth, multi-modal and ill-conditioned optimization problems. Classical, deterministic algorithms require an enormous computational effort, which tends to fail as the problem size and its complexity increase, which is often the case. On the other hand, stochastic, biologically-inspired techniques, designed for global optimum calculation, frequently prove successful when applied to real life computational problems. While the area of bio-inspired algorithms (BIAs) is still relatively young, it is undergoing continuous, rapid development. Selection and tuning of the appropriate optimization solver for a particular task can be challenging and requires expert knowledge of the methods to be considered. Comparing the performance of viable candidates against a defined test bed environment can help in solving such dilemmas. This paper presents the benchmark results of two biologically inspired algorithms: covariance matrix adaptation evolution strategy (CMA-ES) and two variants of particle swarm optimization (PSO). COCO (COmparing Continuous Optimizers) – a platform for systematic and sound comparisons of real-parameter global optimization solvers was used to evaluate the performance of CMA-ES and PSO methods. Particular attention was paid to the effciency and scalability of both techniques.
    Źródło:
    Journal of Telecommunications and Information Technology; 2018, 4; 5-17
    1509-4553
    1899-8852
    Pojawia się w:
    Journal of Telecommunications and Information Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Determination of operator’s impact on the measurement done using coordinate technique
    Autorzy:
    Ostrowska, K.
    Szewczyk, D.
    Sładek, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/102406.pdf
    Data publikacji:
    2013
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    R&R method
    coordinate measuring arms (CMA)
    operator impact
    repeatability
    reproducibility
    Opis:
    Coordinate measuring arms (CMAs) are devices which more and more often replace conventional coordinate measuring machines because of their undoubted advantages, such as mobility, the opportunity to increase the measuring volume, the opportunity to connect the optical probe, and above all, good price-quality ratio. Because these devices are handheld and redundant, what has the greatest impact on the measurement result accuracy are the operator, the machine kinematics and its ability to obtain repeatable measurement results; despite the fact that one point can be obtained from an infinite number of shoulders’ positions. In this paper it was determined by using R&R method how significant are the impacts of both the operator and the measuring device on the accuracy of measurements done with CMA, both with rigid switch probe and optical probe.
    Źródło:
    Advances in Science and Technology. Research Journal; 2013, 7, 20; 11-16
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Notes on occurrence of moths (Lepidoptera, Heterocera) in Ksany village in the commune of Opatowiec of the Świętokrzyskie Province
    Autorzy:
    Konop, Klaudia
    Fyda, Janusz
    Powiązania:
    https://bibliotekanauki.pl/articles/1402396.pdf
    Data publikacji:
    2020
    Wydawca:
    Państwowa Wyższa Szkoła Zawodowa w Tarnowie
    Tematy:
    moths
    nocturnal butterflies
    Heterocera
    Geometridae
    Erebidae
    rapid inventory
    ćma
    motyl nocny
    miernikowcowate
    mrocznicowate
    Opis:
    On selected days from July to September 2017, the butterfly species with twilight and nocturnal activity in the village of Ksany in agriculturally and little anthropogenically transferred land were studied. Catching was done in the evening and night hours, using a method of the vividly attracting to the light. Flying moths were photographed on-site for later determination. A total of 13 catches were carried out with an average at intervals of 1-2 weeks. Over 60 moths species were determined, mostly belonging to the families Geometridae and Erebidae. When analyzing the results of catches, basic weather parameters such as temperature, air pressure and moon phase were taken into account.
    Źródło:
    Science, Technology and Innovation; 2020, 9, 2; 28-38
    2544-9125
    Pojawia się w:
    Science, Technology and Innovation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evolutionary Algorithm for Particle Trajectory Reconstruction within Inhomogeneous Magnetic Field in the NA61/SHINE Experiment at CERN SPS
    Autorzy:
    Wyszyński, Oskar
    Powiązania:
    https://bibliotekanauki.pl/articles/1373697.pdf
    Data publikacji:
    2015
    Wydawca:
    Uniwersytet Jagielloński. Wydawnictwo Uniwersytetu Jagiellońskiego
    Tematy:
    tracking
    event
    reconstruction
    particle
    high
    energy
    physics
    HEP
    NA61
    SHINE
    CERN
    TPC
    magnetic
    field
    CMA
    evolutionary
    strategy
    bayes
    generative
    discriminative
    Opis:
    In this paper, a novel probabilistic tracking method is proposed. It combines two competing models: (i) a discriminative one for background classification; and (ii) a generative one as a track model. The model competition, along with a combinatorial data association, shows good signal and background noise separation. Furthermore, a stochastic and derivative-free method is used for parameter optimization by means of the Covariance Matrix Adaptation Evolutionary Strategy (CMA-ES). Finally, the applicability and performance of the particle trajectories reconstruction are shown. The algorithm is developed for NA61/SHINE data reconstruction purpose and therefore the method was tested on simulation data of the NA61/SHINE experiment.
    Źródło:
    Schedae Informaticae; 2015, 24; 159-177
    0860-0295
    2083-8476
    Pojawia się w:
    Schedae Informaticae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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