Environmental contours are widely used as basis for design of structures exposed to environmental loads. The basic idea the method is decouple description from structural response. This done by establishing an envelope joint extreme values representing critical conditions, such that any structure tolerating loads on this will have a failure probability smaller than prescribed value. Specificall...

The equal-loudness contours describe the frequency characteristic of sensitivity of our auditory system. A set of the equal-loudness contours based on British data measured in mid-1950 was standardized as ISO 226. However, several research results reported in mid-1980 showed that the set of equal-loudness contours in ISO 226 contained a large error. We, therefore, carried out this project to de...

A three-dimensional (3D) reconstruction algorithm based on contours identification from biplanar radiographs is presented. It requires, as technical prerequisites, a method to calibrate the biplanar radiographic environment and a surface generic object (anatomic atlas model) representing the structure to be reconstructed. The reconstruction steps consist of: the definition of anatomical regions...