Remarks on the Swiss premium principle on positive risks
Abstract In this note it is proved that the Swiss premium principle is completely characterized by its premiums for positive Bernoulli risks. This yields another interpretation of the Swiss premium principle.
Determination of 235U and 238U in urine samples using sector field inductively coupled plasma mass spectrometry.
The high sensitivity of SF-ICP-MS (sector field inductively coupled plasma mass spectrometry) using a torch with the "guard-electrode" (capacitive decoupled plasma) allows the determination of 238U (isotope abundance 99.2%) and 235U (0.8%) and their isotope ratio in human urine samples down to the physiological level of <10 ng/l total uranium. For sample preparation UV photolysis was used. Some quality criteria like for the detection limit, the reproducibility, recovery and the isotope ratio are given. The method can be applied in occupational as well as in environmental medicine because of its outstanding detection power.
Visualization and unsupervised classification of changes in multispectral satellite imagery
The statistical techniques of multivariate alteration detection, minimum/maximum autocorrelation factors transformation, expectation maximization and probabilistic label relaxation are combined in a unified scheme to visualize and to classify changes in multispectral satellite data. The methods are demonstrated with an example involving bitemporal LANDSAT TM imagery.