A balloon catheter having a multilayered shaft with variable flexibility along the length of the shaft. An example process is dynamic in the face of fluctuations in the request load to the distributed computer system and the periodic adjustments to the placement of applications onto servers in said distributed computer system. The evaluation may include, for example, computing a weighted signal strength measurement in which the weighting gives emphasis to the lower signal strength measurements of fading radio frequency signals. The respective layers can then be processed and compressed separately in order to achieve better compression of the document image overall.