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Thermodynamic data is usually presented as a table or chart of function values for one mole of a substance (or in the case of the steam tables, one kg). A thermodynamic datafile is a set of equation parameters from which the numerical data values can be calculated. Tables and datafiles are usually presented at a standard pressure of 1 bar or 1 ...
Data reconciliation is a technique that targets at correcting measurement errors that are due to measurement noise, i.e. random errors.From a statistical point of view the main assumption is that no systematic errors exist in the set of measurements, since they may bias the reconciliation results and reduce the robustness of the reconciliation.
In order to calculate the average and standard deviation from aggregate data, it is necessary to have available for each group: the total of values (Σx i = SUM(x)), the number of values (N=COUNT(x)) and the total of squares of the values (Σx i 2 =SUM(x 2)) of each groups.
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In this article we are going to estimate the intrinsic value of MicroStrategy Incorporated ( NASDAQ:MSTR ) by...
Determined the value of A(t) that provided the best fit for the experimental data using the API 579-1 curve. The consumed life fraction "f" was calculated using the Omega approach equations based on the average behavior of non-exposed material. The calculated value of "f" provides an estimate of how much of the material's life has been used
A minimum of three values of a T are needed to obtain C 1, C 2, and typically more than three are used. Once constructed, the WLF equation allows for the estimation of the temperature shift factor for temperatures other than those for which the material was tested. In this way, the master curve can be applied to other temperatures.
The NSE coefficient is sensitive to extreme values and might yield sub-optimal results when the dataset contains large outliers. To address this a modified version of NSE has been suggested where the sums of squares in the numerator and denominator of NSE are raised to 1 instead of 2 and the resulting modified NSE values compared to the ...