Similarity evaluation of 3D topological measurement results using statistical methods

Abstract The main goal of this publication is to determine the impact of the alignment condition to the repeatability of measured values. In the experimental work were performed four series of measurements, each contains 25 individual measurements on a single component. The component was measured according to the rules for making the comparison of measured values for repeatability. This comparison of measurement results was made by using statistical methods. A given goal was completely fulfilled. Experimental work has shown a dominant impact of the alignment condition on the measured values.

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Ensuring the validity of the results of calibrations and tests by statistical methods

Ukrainian Metrological Journal ◽

10.24027/2306-7039.4.2021.250375 ◽

2021 ◽

pp. 8-14

Author(s):

Alexander Kolbasin

Keyword(s):

Statistical Methods ◽

Random Processes ◽

Point Of View ◽

Test Results ◽

Measuring Process ◽

Intermediate Precision ◽

Poincaré Plot ◽

Measuring Systems ◽

Measurement Results ◽

Iso 5725

According to the requirements of ISO/IEC 17025:2017, the validity of test and calibration results is ensured, inter alia, by intralaboratory check of the results obtained. In this case, it is preferable to use statistical methods. The ISO 5725 standards define a number of such methods, but the choice of specific methods is left to the laboratory, taking into account the requirements for the adequacy of the effort, resources and time for the purposes of the work performed and the risks of obtaining inappropriate results. In this case, the laboratory itself must in a certain way determine which objects of calibrations (tests) should be predominantly used in checks and what frequency of checks should be foreseen. In connection with the increase in the accuracy and complexity of measuring systems, the need to apply the methods of the theory of random processes becomes more and more obvious. It is shown that the use of the Poincaré plot makes it possible to comprehensively, effectively and visually evaluate changes in the measuring process from the point of view of the dynamics of the obtained measurement results. The results of the check, in particular, the intermediate precision, make it possible to obtain a more realistic evaluation of measurement uncertainty in accordance with ISO 21748. The paper analyses some practical approaches (of varying degrees of complexity) to intralaboratory checks of the validity of calibration (test) results.

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Use of statistical methods for the interpretation of measurement results of Peruvian wines with MOS E-noses

10.1149/osf.io/fybzx ◽

2021 ◽

Author(s):

Ana Lucía Paredes-Doig ◽

Elizabeth Doig-Camino ◽

Rosario Sun-Kou ◽

Gino Picasso ◽

Adolfo La Rosa-Toro

Keyword(s):

Statistical Methods ◽

Statistical Information ◽

The Other ◽

Electronic Noses ◽

Labview Software ◽

Measurement Results ◽

Tin Oxides ◽

Made In

With the sensors made in the laboratory, two electronic noses were built. One of them, of platinum doped tin oxides and the other of palladium. The sensing of the wines was monitored with the LabVIEW software and the statistical methods were applied with the XLSTAT software. It was observed that for the nose of platinum sensor a difference in the groups of commercial and unknown wines was shown. This difference is attributed to the brand or origin of the wines. While the nose of palladium sensors allowed to distinguish the strains because it locked the Borgoña wines in a different conglomerate. This could be observed with the PCA, cluster and Factorial methods, complementing the three methods the statistical information.

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PENGARUH ARUS LISTRIK DAN WAKTU PROSES TERHADAP KETEBALAN DAN MASSA LAPISAN YANG TERBENTUK PADA PROSES ELEKTROPLATING PELAT BAJA

JURNAL ILMIAH SAINS ◽

10.35799/jis.11.1.2011.50 ◽

2011 ◽

Vol 11 (1) ◽

pp. 97 ◽

Cited By ~ 3

Author(s):

Daud Topayung

Keyword(s):

Theoretical Analysis ◽

Electric Current ◽

Layer Thickness ◽

Statistical Methods ◽

Process Time ◽

Faraday’S Law ◽

Measurement Results ◽

Theoretical Results

Penelitian menggunakan hukum Faraday untuk analisis teoritis dan metode statistik untuk analisis hasil pengukuran. Hasil teoritis, Ketebalan: Tmaks = 0.116461 mm, Tmin = 0.028423 mm. Massa: Mmaks = 5.2100 gr, Mmin = 1.3025 gr. Hasil pengukuran, Ketebalan: Tmaks = 0.109 mm, Tmin = 0.026 mm. Massa: Mmaks = 4.8516 gr, Mmin = 1.1902 gr. Ketebalan dan massa lapisan teoritis lebih besar dari hasil pengukuran. Perbedaan keduanya: Tmaks = 0.007 mm (6.12%), Tmin = 0.002 mm (7.35%), Mmaks = 0.3564 gr (6.88%), Mmin = 0.1123 gr (8.62%). Untuk hasil teoritis dan hasil pengukuran: Tmaks and Mmaks diperoleh pada arus listrik = 8 Ampere dan waktu proses 60 menit, Tmin dan Mmin diperoleh pada arus listrik = 4 Ampere dan waktu proses 30 menit. EFFECT OF ELECTRIC CURRENT AND PROCESS TIME THE THICKNESS AND MASS LAYER FORMED ON ELECTROPLATING PROCESSSTEEL PLATESABSTRACTResearch using Faraday's law for the theoretical analysis and statistical methods to analyze the results of measurements. Theoretical results, Thickness: Tmaks = 0.116461 mm, Tmin = 0.028423 mm. Mass: Mmaks = 5.2100 gr, Mmin = 1.3025 gr. Results of measurement, Thickness: Tmaks = 0.109 mm, Tmin = 0.026 mm. Mass: Mmaks = 4.8516 gr, Mmin = 1.1902 gr. Layer thickness and mass is theoretically greater than the measurement results. Differences both: Tmaks = 0.007 mm (6.12%), Tmin = 0.002 mm (7.35%), Mmaks = 0.3564 gr (6.88%), Mmin = 0.1123 gr (8.62%). For the theoretical results and measurements: Tmaks and Mmaks obtained at an electric current = 8 Amperes and 60 minutes, Tmin and Mmin obtained = 4 Amperes of electric current and 30 minutes

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Use of Statistical Methods for the Interpretation of Peruvian Wines Measurement Results with MOS Electronic Noses

ECS Meeting Abstracts ◽

10.1149/ma2021-01541326mtgabs ◽

2021 ◽

Vol MA2021-01 (54) ◽

pp. 1326-1326

Author(s):

Rosario Sun-Kou ◽

Ana Paredes-Doig ◽

Gino Picasso ◽

Adolfo La Rosa-Toro ◽

Elizabeth Doig-Camino

Keyword(s):

Statistical Methods ◽

Electronic Noses ◽

Measurement Results

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Statistics and parallaxes

International Astronomical Union Colloquium ◽

10.1017/s0252921100073875 ◽

1978 ◽

Vol 48 ◽

pp. 7-29

Author(s):

T. E. Lutz

Keyword(s):

Experimental Design ◽

Statistical Methods ◽

Review Paper ◽

Systematic Errors ◽

Past Experience ◽

Random Errors ◽

Trigonometric Parallaxes ◽

Systematic And Random Errors

This review paper deals with the use of statistical methods to evaluate systematic and random errors associated with trigonometric parallaxes. First, systematic errors which arise when using trigonometric parallaxes to calibrate luminosity systems are discussed. Next, determination of the external errors of parallax measurement are reviewed. Observatory corrections are discussed. Schilt’s point, that as the causes of these systematic differences between observatories are not known the computed corrections can not be applied appropriately, is emphasized. However, modern parallax work is sufficiently accurate that it is necessary to determine observatory corrections if full use is to be made of the potential precision of the data. To this end, it is suggested that a prior experimental design is required. Past experience has shown that accidental overlap of observing programs will not suffice to determine observatory corrections which are meaningful.

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