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Diagnostic factors for opened and closed kinematic chain of vibroarthrography signals

Machrowska Anna, Karpiński Robert, Krakowski Przemysław, Jonak Józef

Applied Computer Science

2019

Vol. 15, no 3

34--44

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.

Application of acoustic signal processing methods in detecting differences between open and closed kinematic chain movement for the knee joint

Karpiński Robert, Machrowska Anna, Maciejewski Marcin

Applied Computer Science

2019

Vol. 15, no 1

36--48

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.

New Methods of the Assur Groups Structural Synthesis

Romaniak K.

Mechanics and Mechanical Engineering

2008

Vol. 12, nr 2

125-133

The paper presents the synthesis of the Assur groups different classes, single - or multi-contours conducted with three new methods (M1, M2, M3). Their usage every time leads to the Assur group with zero degree of freedom. Method M1 was used to synthesis of Assur group class III and higher; M2 to creation of multi contour Assur groups; M3 to creation of kinematic chains composed of Assur groups.