ON THE CONCEPTS MEANING, THEIR MEASUREMENTS AND USE IN PRACTICE OF RISK ASSESSMENT.

In this talk we discuss the basic concepts used in axioms of sciences, their meaning explained through the axioms and measurement that follow afterwards. There are situations where meaning comes first, then axioms then measure. And there are situations where measurements come first and meanings - later. Things may look elementary, but they are supposed to build a solid background when make a system to analyze the risk. We illustrate this approach on examples from classic sciences as geometry and algebra, from examples of recent times as for uncertainty and probability and focus our attention on the concept of risk ant its measurements. [ABSTRACT FROM AUTHOR]