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Wyszukujesz frazę "algorithm components" wg kryterium: Temat


Wyświetlanie 1-5 z 5
Tytuł:
An Integrated Approach towards Building a Simulation Model Supporting the Management of the Passenger Transportation System. Part 1 - Theoretical basis.
Autorzy:
Gąbka, Joanna
Susz, Sławomir
Rosienkiewicz, Maria
Powiązania:
https://bibliotekanauki.pl/articles/504202.pdf
Data publikacji:
2016
Wydawca:
Międzynarodowa Wyższa Szkoła Logistyki i Transportu
Tematy:
integrated approach
management system
transport network
algorithm components
simulation model
Opis:
This article presents an integrated approach towards building a simulation model of the transportation network. The proposed method is based on the recommendations of the Blue Book for Sector of Public Transport in cities, agglomerations and regions issued by Jaspers (Joint Assistance to Support Projects in European Regions). It comprises six steps with such elements as econometric modelling, artificial neural networks and mathematical model. It is dedicated to developing simulation models for the purpose of picturing present situation and dependencies dominating in the transportation network, easily reflecting effects of potential modifications and providing forecasts for the future. The described hybrid method was verified in practice by building the simulation model which is presented in the next article in this series entitled: An Integrated Approach towards Building a Simulation Model Supporting the Management of the Passenger Transportation System. Part 2 – Case Study.
Źródło:
Logistics and Transport; 2016, 32, 4; 39-50
1734-2015
Pojawia się w:
Logistics and Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Novel Approach for the Assembly of Fabricated Aero-Engine Components
Autorzy:
Jayaweera, N.
Webb, P.
Johnson, C.
Powiązania:
https://bibliotekanauki.pl/articles/971261.pdf
Data publikacji:
2009
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
robotic assembly
best-fit algorithm
aero-engine components
Opis:
Currently the manufacturing of aero-engine intercase is primarily a single piece titanium casting and has slightly deteriorated material properties as compared to sheet metal parts and has long manufacturing lead time. As an alternative solution to above problems, the VITAL (Environmentally Friendly Aero Engines) project aims to design, manufacture and test the critical technologies required to develop new type of clean and low noise aero engines by developing innovative technical solutions to reduce the engine's weight, thereby reducing both fuel consumption and CO2 emission. This requires the fabrication of small and weight optimised parts which will be automatically manipulated, welded, assembled and inspected in a flexible fabrication cell. The paper introduces a novel techniques for compensating the deformation that occur in aero-engine fabricated components and potential component handling errors using standard industrial robots, an advanced end-effector, mathematical processing, non-contact metrology systems and cell control system. The system described in this paper uses in-process measurement sensors to determine the component's exact location prior to the assembly operation. The core of the system is a set of algorithms capable of best fitting measurement data to find optimal assembly of components.
Źródło:
Journal of Machine Engineering; 2009, 9, 4; 61-70
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modeling income on the basis of distribution mixture
Autorzy:
Sitek, Grzegorz
Powiązania:
https://bibliotekanauki.pl/articles/584955.pdf
Data publikacji:
2014
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
finite mixture
income distribution
maximum likelihood estimate
EM algorithm
number of components
Opis:
Finite mixtures of probability distributions may be successfully used in the modeling of probability distributions of incomes. These distributions are typically heavy tailed and positively skewed. This article deals with the problem of determining the number of components in mixture modeling. This paper considers the likelihood of ratio-based testing of the null hypothesis of homogeneity in mixture models. The number of components is an important parameter in the applications of finite mixture models.
Źródło:
Mathematical Economics; 2014, 10(17); 79-90
1733-9707
Pojawia się w:
Mathematical Economics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Aktivnyj filtr v sudovoj elektriceskoj seti
Active filter in ship�fs power network
Autorzy:
German-Gałkin, S.
Powiązania:
https://bibliotekanauki.pl/articles/359785.pdf
Data publikacji:
2012
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
hree-phase power network
components
asymmetrical load
non-linear load
active filter
control algorithm
Opis:
In the article ship�fs three-phase power networks with variable, asymmetrical and non-linear load to compensate for the non-active components of power more and more often used active filters are presented. Getting high energy performance of active filter depends of the control algorithm. In this article ship power networks with the new algorithm calculating the active, reactive and unbalanced components to control active filter are described. Study was carried out on virtual model, implemented in the environment "Matlab--Simulink�".
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2012, 31 (103); 73-76
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Algorytm estymacji składowych impedancji w trójkanałowym układzie akwizycji danych
Impedance component estimation algorithm in a three-channel data acquisition system
Autorzy:
Augustyn, J.
Powiązania:
https://bibliotekanauki.pl/articles/158492.pdf
Data publikacji:
2013
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
algorytmy pomiarowe
analiza głównych składowych
dopasowanie do elipsy
pomiary składowych impedancji
measurement algorithms
principal component analysis
ellipse fitting algorithm
measurement of impedance components
Opis:
W artykule przedstawiono algorytm do estymacji składowych impedancji, wyznaczonych na podstawie spróbkowanych wartości napięć związanych z tą impedancją oraz napięcia generatora zasilającego układ pomiarowy. W celu wykorzystania algorytmu dopasowania do elipsy, do zredukowania wymiaru macierzy danych wejściowych, zastosowano analizę głównych składowych. Uzyskane wyniki porównano z algorytmem dopasowania do elipsy dla danych pierwotnych, nie uwzględniających ograniczenia wynikającego z pomiaru napięcia generatora.
The paper presents an algorithm for estimating impedance components that were determined on the basis of sampled voltages associated with this impedance as well as a voltage of the signal generator feeding the measuring system. Since all signal processing circuit elements introduce errors, a set of N points described by equations (5) does not lie on the plane but it creates a cloud in the 3-D space. To determine the parameters of the plane (5b) on which the measurement results should be located, the principal component analysis can be used [10]. In this method the data dimension is reduced by searching for a plane which maximizes the variance of the data collected in X. For sequences of the sampled signal values, the covariance matrix of a sample (6) can be calculated. Then there are determined eigenvalues λ and eigenvectors aj of the covariance matrix C. A base of the plane which is the best 2-D approximation of the data contained in X is defined by the eigenvectors a1 and a22. For the determined base of the plane, the data can be transformed to the coordinate system defined by the vectors a1 and a2 (8). The adjusted coordinate values of points in the coordinate system Oxyz, are obtained after transformation (9). The first two columns of this matrix are the input data for the ellipse-fit algorithm. The results obtained with use of the principal component analysis were compared with those from the ellipse-fit algorithm for raw data, without taking into account constraints of the generator voltage measurement. Properties of the proposed algorithm and particularly the influence of incoherent sampling were examined with the Monte Carlo method. The influence of incoherent sampling on the random characteristics of the relative measurement error of impedance components is shown in Fig. 3 in the form of histograms of error values of the module δ|Z| and the phase angle δφ of the impedance Z.
Źródło:
Pomiary Automatyka Kontrola; 2013, R. 59, nr 1, 1; 1-5
0032-4140
Pojawia się w:
Pomiary Automatyka Kontrola
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-5 z 5

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