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2 2012

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Description of the Kinematics of the Implant-Thigh-Bone System while Statically Loaded with the Human Weight

Zaczyk M., Jasinska-Choromanska D., Baginski K.

Machine Dynamics Research

2012

Vol. 36, No. 2

111-117

The paper presents an analytic way of determining loads that occur in the hip joint, with regard for the kinematics of the joint as well as human anthropometric features. The loads were determined considering the system as static, accepting that they result mainly from the weight of the relevant body members contributing to the loads in the joint. The presented analytical description was compared with results obtained by means of numerical techniques, and it was proved that changes of the man’s weight influence local loads at a chosen fragment of the human motor system. Knowledge on the extent of this influence in particular joints, makes it possible to select in an appropriate way a form of the treatment for particular diseases of the human motor system.

Measuring of the Basic Parameters of LCD Displays

Barczyk R., Kabzinski B., Jasinska-Choromanska D., Stienss A.

Journal of Automation Mobile Robotics and Intelligent Systems

2012

Vol. 6, No. 1

46-48

This article is about realization of the laboratory stand used for measuring parameters of LCD displays. The stand together with additional accessories (spectrophotometer and measuring probes) as well as software allow to measure a wide range of parameters (colour gamut, response time, contrast coefficient and its irregularity, luminance of black colour and its irregularity, luminance of white colour and its irregularity, changes of luminance depending on the viewing angle). This paper also show method and results of measurements of differences in contrast ratio and luminance uniformity between particular pieces of the same model of a display screen (research has been carried out on 5 pieces of the same model of a display). The presented results show that the measured value of the viewing angle may significantly differ from the value provided by producers of displays.