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2007 IEEE International Workshop on Advanced Methods for Uncertainty Estimation in Measurement

Date 16-18 July 2007

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Displaying Results 1 - 25 of 36
  • [Front cover]

    Publication Year: 2007, Page(s): C1
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  • Copyright statement [2007 IEEE International Workshop on Advanced Methods for Uncertainty Estimation in Measurement]

    Publication Year: 2007, Page(s): 1
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  • Table of contents

    Publication Year: 2007, Page(s): i
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  • [Commentary]

    Publication Year: 2007, Page(s): ii
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  • Contributor listings

    Publication Year: 2007, Page(s): iii
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  • [Commentary]

    Publication Year: 2007, Page(s): iv
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  • Table of contents

    Publication Year: 2007, Page(s):v - xvi
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  • Quantifying the Measurement Uncertainty Using Bayesian Inference

    Publication Year: 2007, Page(s):1 - 4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1054 KB) | HTML iconHTML

    In this paper we describe the use of Bayesian inference for the evaluation of measurement uncertainty. The performance of the proposed approach is tested in a multivariate non linear measurement model in which the measurand is the ratio between two quantities: the first one being the sum of constant systematic effects and experimental indications, while the second one is referred to a measurement ... View full abstract»

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  • Approximating Coverage Intervals of Well-Known Continuous Probability Distributions by Possibility Distributions

    Publication Year: 2007, Page(s):5 - 9
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1598 KB) | HTML iconHTML

    At the application level, it is important to be able to define around the measurement result an interval which will contain an important part of the distribution of the measured values, that is, a coverage interval. This practice acknowledged by the ISO Guide is a major shift from the probabilistic representation. It can be viewed as a probability-possibility transformations by viewing possibility... View full abstract»

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  • On a generalized T-norm for the representation of uncertainty propagation in statistically correlated measurements by means of fuzzy variables

    Publication Year: 2007, Page(s):10 - 15
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (589 KB) | HTML iconHTML

    The problem of uncertainty representation and propagation in the context of statistically correlated variables is commonly addressed by means of Monte Carlo simulation as recommended in IEC-ISO Guide. Moreover, in a recent literature, fuzzy sets have proved to be a valid alternative in the case of independent variables. Unfortunately, the problem of modelling statistically correlated variables, by... View full abstract»

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  • Air Gauge Adjustment Uncertainty Reduction

    Publication Year: 2007, Page(s):16 - 19
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4184 KB) | HTML iconHTML

    - The measurement with air gauges is simple, accurate and cheap. Nowadays, new pneumatic devices equipped with piezoresistive pressure sensors are highly sensitive to the changes of pressure in the measuring chamber. Flow-through phenomena cause the fluctuations of the measuring pressure and influent the indication of the length measurement. If not recognized and not dealt with properly, those flu... View full abstract»

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  • Uncertainty in CMM Measurement of Roundness

    Publication Year: 2007, Page(s):20 - 23
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3333 KB) | HTML iconHTML

    In the paper, the possibilities of the Coordinate Measuring Machines application for the roundness measurement have been discussed. The basic assumptions for this kind of measurement have been presented. The simulation results have been presented, as well as the experimental measurement results. The dependence of the uncertainty on measuring points number have been analyzed, and the recommendation... View full abstract»

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  • Estimation of Uncertainty in Complex Biomeasurements

    Publication Year: 2007, Page(s):24 - 29
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2595 KB) | HTML iconHTML

    Biomeasurements are an important field of present-day metrology, and there is special interest in the application of the still developing methods of optical and optoelectronic measuring. This paper covers the new practical application of advanced methods for uncertainty estimation in very complex measurements made with pulse oximetry. Pulse oximetry is one marvelous example of a new generation of ... View full abstract»

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  • Uncertainty Propagation in a Non-linear Regression Analysis: Application to a Ballistic Absolute Gravimeter (IMGC-02)

    Publication Year: 2007, Page(s):30 - 34
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1870 KB) | HTML iconHTML

    Today's most accurate measurements of the gravitational acceleration are based on interferometric reconstruction of the vertical trajectory followed by a test body launched in a vacuum chamber. The gravity value g is one of the parameters of a model function derived from the law of motion of the body, and is estimated by a least squares adjustment. In this paper we present the regression analysis ... View full abstract»

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  • Different possible approaches to RFV construction based on the available metrological information

    Publication Year: 2007, Page(s):35 - 40
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4198 KB) | HTML iconHTML

    Different approaches than those framed strictly within the theory of probability and recommended by the GUM have been proposed during the last recent years for uncertainty expression and estimation. The one based on Random-Fuzzy Variables (RFV) appears to be the most promising one, since it is based on the theory of evidence, that encompasses both the probability and possibility theories as partic... View full abstract»

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  • An Adaptive Model of the Fuzzy Variable - Quality Index

    Publication Year: 2007, Page(s):41 - 46
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4966 KB) | HTML iconHTML

    In this article we discuss a model of quality as the fuzzy variable in order to better understand the concept and thus enable the further development of the variable. We propose a general method to estimate the quality index which can handle both qualitative and quantitative factors. The method uses a fuzzy neural network since the system learns how to integrate the human judgment of quality into ... View full abstract»

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  • Image Quality Assessment: an Overview and some Metrological Considerations

    Publication Year: 2007, Page(s):47 - 52
    Cited by:  Papers (10)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2194 KB) | HTML iconHTML

    This paper presents the state of the art in the field of Image Quality Assessment (IQA), providing a classification of some of the most important objective and subjective IQA methods. Furthermore, some aspects of the field are analysed from a metrological point of view, also through comparison with the software quality measurement area. In particular, a statistical approach to the evaluation of th... View full abstract»

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  • Expectation - A Fuzzy Term in Metrology?

    Publication Year: 2007, Page(s):53 - 58
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1205 KB) | HTML iconHTML

    Within the metrology community we find several ideas concerning the importance and definition of the term "expectation". Sometimes it is used inadequately. Here we quote the most popular ones and derive, from the point of view of signal and system theory as well as of stochastics and statistics, one pair of definitions as being the most reasonable. Several familiar examples will support this syste... View full abstract»

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  • Uncertainty and Worst Case Analysis for a Low-Pass Filter Using Polynomial Chaos Theory

    Publication Year: 2007, Page(s):59 - 63
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4057 KB) | HTML iconHTML

    In this paper, the authors propose an analytical method to estimate the worst case in terms of uncertainty propagation in a measurement operation. The theory is exemplified with a specific application: power measurement with a signal conditioning stage including a low-pass filter. In AC power measurement the low pass filtering affects magnitude and phase of each harmonic component. The low pass fi... View full abstract»

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  • Prediction of the Lifetime of a Battery-Operated Video Node Using Offline and Online Measurements

    Publication Year: 2007, Page(s):64 - 68
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2372 KB) | HTML iconHTML

    This paper presents a model for determining the first and second order statistics of the lifetime of a battery-operated node. This model assumes knowledge of the statistics of duration and consumption of the tasks that can be performed by the system, as well as of the statistics of the task occurrences and of the remaining charge in the battery. The latter may be monitored by an onboard sensor. Kn... View full abstract»

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  • An Effective Method to Handle Measurement Uncertainty in Conformance Testing Procedures

    Publication Year: 2007, Page(s):69 - 73
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (550 KB) | HTML iconHTML

    This paper deals with a new design criterion aimed at keeping the decisional risks associated to conformance testing procedures below given target values. The proposed approach is based on two closed-form analytical expressions describing the dependence of both the consumer's risk (CR) and the producer's risk (PR) on three essential parameters for conformance testing, i.e. the process capability i... View full abstract»

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  • Accounting Measurement Uncertainty in Fuzzy Inference

    Publication Year: 2007, Page(s):74 - 79
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4906 KB) | HTML iconHTML

    Fuzzy inference systems are presently employed in the presence of uncertain models, or when deterministic models are too complex to be implemented. Input data to fuzzy inference systems are generally represented by crisp variables also when they represent experimental measurement results, thus disregarding measurement uncertainty. Since recent works have shown that measurement results can be effec... View full abstract»

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  • Analysis of the Maximum Entropy pdf Reconstruction Based on Uncertain Higher Order Moment Estimates

    Publication Year: 2007, Page(s):80 - 83
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1371 KB) | HTML iconHTML

    The ISO guide for the expression of uncertainty requires the statement of the measurement uncertainty in terms of expanded uncertainty associate to a defined level of confidence. This requires the knowledge of the probability density function of the measurement results. This paper describes the effect of uncertainty of the estimated higher order moments on the maximum entropy estimate of the proba... View full abstract»

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  • A Digital Circuit for Jitter Reduction of GPS-disciplined 1-pps Synchronization Signals

    Publication Year: 2007, Page(s):84 - 88
    Cited by:  Papers (3)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3205 KB) | HTML iconHTML

    The Global Positioning System (GPS) satellites transfer accurate time from atomic clocks, thus enabling the receivers on Earth to produce high-stability synchronization signals (i.e., trains of low-jitter pulses without drift). The timing accuracy of the generated stream of pulses depends on the features as well as on the cost of the specific GPS receiver employed. This paper describes a fully dig... View full abstract»

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  • On the Use of Numeric Integration for Uncertainty Evaluation in Indirect Measurements

    Publication Year: 2007, Page(s):89 - 92
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1643 KB) | HTML iconHTML

    According to the last revision of international recommendations, numerical methods are nowadays claimed/or the estimation of measurement uncertainty in indirect measurements. The paper, in particular, proposes the use of numeric integration of measurement models as a fast and reliable method for uncertainty estimation. Starting from the knowledge of the probability density functions of the input q... View full abstract»

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