Search results for "Uncertainty analysi"
showing 4 items of 94 documents
Uncertainty on radiation doses estimated by biological and retrospective physical methods
2018
International audience; Biological and physical retrospective dosimetry are recognised as key techniques to provide individual estimates of dose following unplanned exposures to ionising radiation. Whilst there has been a relatively large amount of recent development in the biological and physical procedures, development of statistical analysis techniques has failed to keep pace. The aim of this paper is to review the current state of the art in uncertainty analysis techniques across the 'EURADOS Working Group 10- Retrospective dosimetry' members, to give concrete examples of implementation of the techniques recommended in the international standards, and to further promote the use of Monte…
Integrated Urban Water Modeling with Uncertainty Analysis
2005
In the last 20th years, the scientific world has got particular care towards the problems that involve the respect of the environment. According to this point, several researches were developed to describe the phenomena that take place during both wet and dry period and to increase the knowledge in this field. In particular, the attention was addressed towards the problems linked with the pollution of the water body because of the pollution carried by rainfall waters in the urban environment. In order to obtain a good description of the problem, it is important, of course, to analyze both quantity and quality aspects connected with all the transformation phases that characterize the urban w…
The Fouling phenomena in membrane bioreactors: a comparison of different mathematical modelling approaches
2015
Eight different modelling approaches for membrane fouling modelling have been compared and the uncertainty has been assessed. Overall the eight approaches provided satisfactory results in terms of model fitting with the measured data. Different results have been obtained in terms of uncertainty bounds showing a different reliability of the model approaches. The study allowed to gain insights about the mechanisms which control fouling in membrane bioreactors.
Uncertainty analysis in sewer systems performance evaluation
2005
In recent years, in order to analyse complex urban drainage systems and to identify the most effective measures for improving their efficiency, many parameters, or indicators, have been defined and many methodologies have been proposed in order to quantify sewer systems performance in the most objective and general way. However, some uncertainty arises in these methodologies due to choices which the user has to take in applying the procedure. Thus, performance analysis results are affected by operator experience and they are mainly useful for comparison between different scenarios applied to the same system. In the present paper, a statistical analysis of sewer systems performance has been …