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    Wyświetlanie 1-9 z 9
    Tytuł:
    Statement Networks to Condition Monitoring of the Sealless Pump
    Autorzy:
    Rzydzik, S.
    Amarowicz, M.
    Psiuk, K.
    Rogala, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/226493.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    diagnostic model
    statement network
    multi-layer
    expert system
    Opis:
    This paper shows an application of multi-layer statement networks to condition monitoring of the sealless magnetic drive pump. In this case, statement networks are computed based on the use of Bayesian probabilities. Moreover, the tool called REx which allows implementing such networks is described. An example of created four-layer network as well as final results of the performed tests shows also.
    Źródło:
    International Journal of Electronics and Telecommunications; 2014, 60, 3; 265-269
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Intelligent System in the Context of Business Process Modelling
    Autorzy:
    Yaremko, Svetlana A.
    Kuzmina, Elena M.
    Savina, Nataliia B.
    Gromaszek, Konrad
    Yeraliyeva, Bakhyt
    Borankulova, Gauhar
    Powiązania:
    https://bibliotekanauki.pl/articles/1844622.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    business process
    automation
    simulation modelling
    intelligent system
    expert system
    intelligence analysis
    forecasting
    Opis:
    The article deals with the features and characteristics of intelligent systems for modelling business processes. Their classification was made and criteria for comparison were developed. According to the comparative analysis of existing expert systems for intelligent analysis, a reasonable choice of system for modelling business processes of a particular enterprise has been carried out. In general, it was found that the introduction of intelligent systems for modelling business processes of the enterprise and forecasting its activities for future allows management of the company to obtain relevant and necessary information for the adoption of effective management decisions and the development of a strategic plan.
    Źródło:
    International Journal of Electronics and Telecommunications; 2021, 67, 2; 163-168
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Expert System for Analysis of Casting Defects - ESVOD
    Autorzy:
    Elbel, T.
    Králová, Y.
    Hampl, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/380687.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    expert system
    defect identification
    casting defect
    system ekspertowy
    identyfikacja wady
    wada odlewu
    Opis:
    The powerful tool for defect analysis is an expert system. It is a computer programme based on the knowledge of experts for solving the quality of castings. We present the expert system developed in the VSB-Technical University of Ostrava called ‘ESWOD’. The ESWOD programme consists of three separate modules: identification, diagnosis /causes and prevention/ remedy. The identification of casting defects in the actual form of the system is based on their visual aspect.
    Źródło:
    Archives of Foundry Engineering; 2015, 15, 1; 17-20
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Decision Support System for Epileptogenic Zone Location During Brain Resection
    Autorzy:
    Kołodziej, M.
    Majkowski, A.
    Rak, R. J.
    Rysz, A.
    Marchel, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/221787.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    ECoG
    iEEG
    electrocorticography
    epileptogenic zone
    signal analysis
    expert system
    neural network
    Opis:
    This paper presents a system for locating the epileptogenic zone (EZ) using an automated analysis of electrocorticography (ECoG) signal recorded with 20 electrodes placed on the brain surface. The developed system enables automatic determination of places where anomalies connected with epilepsy are observed. The developed algorithm was tested on signals recorded for 33 patients who, after a prior neurological analysis, underwent the brain resection surgery. The results obtained with the algorithm were compared with those of medical analyses performed by the neurologist. The proposed system has a satisfactory accuracy – 87.8% – and can be used as a decision-supporting tool by the neurosurgeon during brain resection.
    Źródło:
    Metrology and Measurement Systems; 2018, 25, 1; 15-32
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Construction of an Expert System Based on Fuzzy Logic for Diagnosis of Analog Electronic Circuits
    Autorzy:
    Grzechca, D. E.
    Powiązania:
    https://bibliotekanauki.pl/articles/226616.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    analog circuits fault diagnosis
    analog system testing
    fuzzy set theory
    expert system
    sensitivity analysis
    Opis:
    The paper presents construction of the fuzzy logic system to analog circuits parametric fault diagnosis. The classical dictionary construction is replaced by fuzzy rule system. The first part refers to analog fault diagnosis, its techniques, approaches and goals. It clarifies common strategy and define differences between detecting, locating and identifying a fault in analog electronic circuit. The second part is focused on a creation of fuzzy rule expert system with use of sensitivity functions and known circuit topology. To detect, locate and identify a faulty element in a circuit the sensitivity matrix is used. The advantage of the method is its utilization in all, AC, DC and time domain. The fuzzy system, like the classical fault dictionary, can detect and locate single catastrophic faults and, on the contrary to the classical one, it also detects and locates parametric faults. Moreover, it allows identification of these faults, such that sign of the faulty parameter deviation is designated. The method has deterministic character as well as it can be applied on the verification and production stage.
    Źródło:
    International Journal of Electronics and Telecommunications; 2015, 61, 1; 77-82
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Mathematical Model of Hydrodynamics and Heat and Mass Transfer at Formation of Steel Ingots and Castings
    Autorzy:
    Bondarenko, V. I.
    Bilousov, V. V.
    Nedopekin, F. V.
    Shalapko, J. I.
    Powiązania:
    https://bibliotekanauki.pl/articles/383139.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    mathematical model
    numerical modeling
    steel ingot
    turbulent convection
    expert system
    physical statement of problem
    model matematyczny
    modelowanie numeryczne
    wlewek stalowy
    system ekspertowy
    Opis:
    The generic mathematical model and computational algorithm considering hydrodynamics, heat and mass transfer processes during casting and forming steel ingots and castings are offered. Usage domains for turbulent, convective and non-convective models are determined depending on ingot geometry and thermal overheating of the poured melt. The expert system is developed, enabling to choose a mathematical model depending on the physical statement of a problem.
    Źródło:
    Archives of Foundry Engineering; 2015, 15, 1; 13-16
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Shock safety modeling method for low-voltage electric devices
    Autorzy:
    Korniluk, W.
    Sajewicz, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/141402.pdf
    Data publikacji:
    2010
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    zarządzanie bezpieczeństwem
    system ekspertowy
    sieć bayesowska
    prawdopodobieństwo całkowite
    bezpieczeństwo porażeniowe
    safety management process
    expert system
    Bayesian network
    total probability
    protection reliability states
    appearance of touch and electric shock states
    risk analysis and assessment
    Opis:
    The article describes a shock safety modeling method for low-voltage electric devices, based on using a Bayesian network. This method allows for taking into account all possible combinations of the reliability and unreliability states for the shock protection elements under concern. The developed method allows for investigating electric shock incidents, analysing and assessing shock risks, as well as for determining criteria of dimensioning shock protection means, also with respect to reliability of the particular shock protection elements. Dependencies for determining and analysing the probability of appearance of reliability states of protection as well as an electric shock risk are presented in the article.
    Źródło:
    Archives of Electrical Engineering; 2010, 59, 3-4; 153-167
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Shock safety modelling of indirect contact with low-voltage electric devices
    Autorzy:
    Korniluk, W.
    Sajewicz, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/141066.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    zarządzanie bezpieczeństwem
    system ekspertowy
    sieć bayesowska
    prawdopodobieństwo całkowite
    ochrona przeciwporażeniowa
    porażenie prądem elektrycznym
    safety management process
    expert system
    Bayesian network
    total probability
    protection reliability states
    appearance of touch and electric shock states
    risk analysis and assessment
    Opis:
    The article presents a shock safety model of an indirect contact with a low-voltage electric device. This model was used for computations and analyses concerning the following: the probabilities of appearance of the particular shock protection unreliability states, electric shock states (ventricular fibrillation), contributions of the unreliability of different shock protection elements to the probability of occurrence of these states, as well as the risk of electric shock (and the shock safety), and contributions of the intensity of occurrence of damages to different shock protection elements to this risk. An example of a possibility to reduce the risk of an electric shock through changing the intensity of occurrence of damages to the selected protection elements was provided.
    Źródło:
    Archives of Electrical Engineering; 2011, 60, 3; 303-315
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Developing automatic recognition system of drill wear in standard laminated chipboard drilling process
    Autorzy:
    Kurek, J.
    Kruk, M.
    Osowski, S.
    Hoser, P.
    Wieczorek, G.
    Jegorowa, A.
    Górski, J.
    Wilkowski, J.
    Śmietańska, K.
    Kossakowska, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/200766.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    diagnostic expert systems
    neural networks
    wavelet packets
    wear monitoring
    diagnostyczny system ekspercki
    sieci neuronowe
    pakiety falkowe
    monitorowanie zużycia
    Opis:
    The paper presents an automatic approach to recognition of the drill condition in a standard laminated chipboard drilling process. The state of the drill is classified into two classes: “useful” (sharp enough) and “useless” (worn out). The case “useless” indicates symptoms of excessive drill wear, unsatisfactory from the point of view of furniture processing quality. On the other hand the “useful” state identifies tools which are still able to drill holes acceptable due to the required processing quality. The main problem in this task is to choose an appropriate set of diagnostic features (variables), based on which the recognition of drill state (“useful” versus “useless”) can be made. The features have been generated based on 5 registered signals: feed force, cutting torque, noise, vibration and acoustic emission. Different statistical parameters describing these signals and also their Fourier and wavelet representations have been used for defining the features. Sequential feature selection is applied to detect the most class discriminative set of features. The final step of recognition is done by using three types of classifiers, including support vector machine, ensemble of decision trees and random forest. Six standard drills of 12 mm diameter with tungsten carbide tips were used in experiments. The results have confirmed good quality of the proposed diagnostic system.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2016, 64, 3; 633-640
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-9 z 9

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