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Wyszukujesz frazę "knee" wg kryterium: Temat


Wyświetlanie 1-4 z 4
Tytuł:
Computer Aided Design and Structural Analysis of the Endoprosthesis of the Knee Joint
Autorzy:
Zubrzycki, J.
Karpiński, R.
Górniak, B.
Powiązania:
https://bibliotekanauki.pl/articles/118225.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Promocji Wiedzy
Tematy:
knee joint
endoprosthesis
finite elements analysis
Opis:
The paper presents results of the preliminary structural analysis of model of the endoprosthesis of the knee joint. Basics of anatomy and biomechanics of the knee joint were introduced. Based on data from computed tomography, the model of knee joint was constructed. The prototype of the endoprosthesis of the knee joint was designed. After determining physical properties of structural materials, the Finite Elements Analysis of the model was conducted under various load conditions. Finally the results of analysis are presented.
Źródło:
Applied Computer Science; 2016, 12, 2; 84-95
1895-3735
Pojawia się w:
Applied Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Knee joint osteoarthritis diagnosis based on selected acoustic signal discriminants using machine learning
Autorzy:
Karpiński, Robert
Powiązania:
https://bibliotekanauki.pl/articles/2097441.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Promocji Wiedzy
Tematy:
acoustic emission
machine learning
osteoarthritis
knee joint
kinetic chain
Opis:
This paper presents the results of a preliminary study on simplified diagnosis of osteo-arthritis of the knee joint based on generated vibroacoustic processes. The analysis was based on acoustic signals recorded in a group of 50 people, half of whom were healthy, and the other half – people with previously confirmed degenerative changes. Selected discriminants of the signals were determined and statistical analysis was performed to allow selection of optimal discriminants used at a later stage as input to the classifier. The best results of classification using artificial neural networks (ANN) of RBF (Radial Basis Function) and MLP (Multilevel Perceptron) types are presented. For the problem involving the classification of cases into one of two groups HC (Healthy Control) and OA (Osteoarthritis) an accuracy of 0.9 was obtained, with a sensitivity of 0.885 and a specificity of 0.917. It is shown that vibroacoustic diagnostics has great potential in the non-invasive assessment of damage to joint structures of the knee.
Źródło:
Applied Computer Science; 2022, 18, 2; 71--85
1895-3735
Pojawia się w:
Applied Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Diagnostic factors for opened and closed kinematic chain of vibroarthrography signals
Autorzy:
Machrowska, Anna
Karpiński, Robert
Krakowski, Przemysław
Jonak, Józef
Powiązania:
https://bibliotekanauki.pl/articles/118051.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Promocji Wiedzy
Tematy:
EMD
EEMD
knee joint
vibration
kinetic chain
staw kolanowy
wibracje
łańcuch kinetyczny
Opis:
The paper presents results of preliminary research of vibroarthrography signals recorded from one healthy volunteer. The tests were carried out for the open and closed kinematic chain in the range of motion 90° – 0° – 90°. Analysis included initial signal filtration using the EMD algorithm. The aim was to investigate the occurrence of differences in the values of selected energy and statistical parameters for the cases studied.
Źródło:
Applied Computer Science; 2019, 15, 3; 34-44
1895-3735
Pojawia się w:
Applied Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of acoustic signal processing methods in detecting differences between open and closed kinematic chain movement for the knee joint
Autorzy:
Karpiński, Robert
Machrowska, Anna
Maciejewski, Marcin
Powiązania:
https://bibliotekanauki.pl/articles/118153.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Promocji Wiedzy
Tematy:
knee joint
kinetic chain
signals
articular cartilage
staw kolanowy
łańcuch kinetyczny
sygnały
chrząstka stawowa
Opis:
The paper presents results of preliminary research of analysis of signals recorded for open and closed kinematic chain in one volunteer with chondromalacia in both knees. The preliminary research was conducted in order to establish the accuracy of the proposed method and will be used for formulating further research areas. The aim of the paper is to show how FFT, recurrence plots and recurrence quantification analysis (RQA) can help in bioacoustic signals analysis.
Źródło:
Applied Computer Science; 2019, 15, 1; 36-48
1895-3735
Pojawia się w:
Applied Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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