Independent ankle motion control improves robotic balance simulator.

We present a validation study for the effectiveness of an additional ankle-tilt platform to enhance somatosensory ankle feedback available to subjects actuating a 6-axis robotic balance simulator platform. To address this need, we have developed and integrated a device to permit independent manipulation of ankle rotation while the whole-body is actuated by the balance simulator. The addition of ankle rotation is shown to provide both quantitative and qualitative improvements to the balance simulation experience compared to when the ankle joint is referenced to the motion of the balance simulator.

4-D x 3-D ultrasound: real-time scan conversion, filtering, and display of displacement vectors with a motorized curvilinear transducer.

Recent research in the field of elastography has sought to expand displacement tracking to three dimensions. Once the 3-D volumes of displacement data have been obtained, they must be scan converted so that further processing, such as inversion methods to obtain tissue elasticity, can take place in Cartesian coordinates. This paper details an efficient and geometrically accurate algorithm to scan convert 3-D volumes of displacement vectors obtained from a motorized sector transducer.

Application of liquid crystal thermoindicators and thermographic sheets for estimation of hygienic conditions of habitation.

One of the basic conditions, enabling the healthy living in flat houses, is the securing of thermoisolation properties of peripheral building elements. The presented study deals with the verification of thermoisolation properties by the method using the liquid crystal thermoindicators and thermographic sheets. The applied method is effective, sufficiently precise and mobile, allowing the estimation of thermoisolation properties of building elements, namely in practice.

Degradation of colour temperature characteristic of thermographic sheets of Czechoslovak provenance provoked by UV radiation.

The presented study deals with the changes of thermooptic qualities of thermographic sheet, provoked by UV irradiation. The thermographic sheets of inland provenance produced by are possible to use in medical coloured surface thermography. The method adapted for measuring gives quite reproducible results and for its relative simplicity it is convenient for medical workplaces where the surface thermography and the UV radiation sources are in use.

Time degradation of chromatic temperature characteristics thermographic sheets applied in actual Czechoslovak medical practice.

The study deals with time degradation changes of chromatic temperature characteristics and chromatically active temperature intervals of LC thermochromic sheets of inland provenance. The method applied is relatively simple, gives quite reproducible results and can be utilized for verification of chromatic temperature characteristics of thermographic sheets in medical establishments. As far as the application of thermographic LC sheets in medicine is concerned, the results obtained in this study describe the time degradation of the most important thermooptic quality of thermochromic sheets of Czechoslovak origin, applied in surface thermography.