Boots – shoes – and leggings
Patent
1994-07-11
1995-03-07
Voeltz, Emanuel T.
Boots, shoes, and leggings
36457101, 356346, G06F 1520
Patent
active
053964403
ABSTRACT:
One aspect of the invention is a method for determining whether systematic biases are present in an instrument. The method involves first obtaining a series of replicates produced by an instrument. Then, a Fourier Transform is performed on that data, thereby generating a secondary spectrum which indicates the frequency characteristics of the data. This secondary spectrum is then compared to secondary spectra obtained in a similar matter from a series of random number sets to determine whether variations observed are within an expected range as defined by the random number series.
Another aspect of the invention is a method for determining an optimum frequency at which the instrument should be calibrated. This method comprises obtaining a set of multivariate data as before, and treating every xth data point as a calibration point and adjusting the values of the points following the calibration point accordingly. A Fourier Transform is then calculated as before. Different values for x are tried, and an optimum calibration frequency is deemed to be a value for x in a region which produces a point which is most similar to the distribution of points corresponding to the series of random number sets.
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Hoppe James T.
Shah Kamini S.
The Dow Chemical Company
Voeltz Emanuel T.
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