I am an Industrial Hygienist, I have to carry out a silica risk assessment with the UNI EN 689 standard; I would like to have a copy of your BWstat3 program.
I look forward to hearing from you.
Best regards
The condition CVt = 0 was leading to a verification statement of 0 < 0, which caused an infinite loop.
The implemented safety measure would have broken this off after 2000 iterations of 10 000 Monte Carlo trials.
So, while it seemed to you that nothing was happening, BWStat was calculating frantically trying to improve precision.
Changing < to <= fixed the problem.
This special case of CVt = 0 also led to another programming issue, which I solved at the same time.
You can follow the details at https://github.com/remonds/Uncertainty-on-UTL/commit/b3778f6d509d2c2f859...
Is this solution satisfactory?
Thanks for your valuable reporting on this issue. BWStat is a program by and for occupational hygienists. Together we make it great.
Thank you for testing, Theo.
The dataset that the button “Simulate data” produced, based on your input, is as designed. It seems you were expecting something different. Could you please describe what exactly?
De gegevensinvoer is redelijk eenvoudig en wordt toegelicht in de titel van het invoervenster.
Gebruik vijf kolommen gescheiden door tab-karakters (Alt+09): TWA-8h, worker, date, detect, CVt.
De handigste manier is kopiëren en plakken vanuit Excel. Je vindt een voorbeeld in het bestand BWStat dataset - cotton dust.xlsx.
Vergeet niet om het decimaal teken te selecteren dat past bij het formaat van jouw numerieke gegevens.
Commentaires
adriano Urciuoli
ven, 19/07/2024 - 15:09
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I am an Industrial Hygienist,
I am an Industrial Hygienist, I have to carry out a silica risk assessment with the UNI EN 689 standard; I would like to have a copy of your BWstat3 program.
I look forward to hearing from you.
Best regards
Robert Emonds
ven, 19/07/2024 - 23:43
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BWStat is an online application
BWStat is an online application. It is free of charge for everyone. No copies are needed. It is accessible to everyone.
Theo Scheffers
dim, 11/08/2024 - 23:06
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CVt=0
als CVt=0 dan gebeurt er bij mij niets in 3.1.0.
Klopt dat?
Voor CVt=0 kan de monte carlo worden overgeslagen
Scheelt rekentijd
Robert Emonds
lun, 12/08/2024 - 11:33
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CVt = 0
The condition CVt = 0 was leading to a verification statement of 0 < 0, which caused an infinite loop.
The implemented safety measure would have broken this off after 2000 iterations of 10 000 Monte Carlo trials.
So, while it seemed to you that nothing was happening, BWStat was calculating frantically trying to improve precision.
Changing < to <= fixed the problem.
This special case of CVt = 0 also led to another programming issue, which I solved at the same time.
You can follow the details at https://github.com/remonds/Uncertainty-on-UTL/commit/b3778f6d509d2c2f859...
Is this solution satisfactory?
Thanks for your valuable reporting on this issue. BWStat is a program by and for occupational hygienists. Together we make it great.
theo.scheffers
ven, 27/09/2024 - 06:11
Permalien
BWStat 3.1.0
Bij menu 'data entry' de optie 'Simulate data' wordt de CVt niet gebruikt.
Onderstaande dataset is gemaakt met GM 20, GSD=1, LoQ=0.01 en CVt=0.15
value CVt worker date detect
20.00 0.15 1 19 TRUE
20.00 0.15 1 10 TRUE
20.00 0.15 1 20 TRUE
20.00 0.15 1 9 TRUE
20.00 0.15 1 18 TRUE
20.00 0.15 1 5 TRUE
20.00 0.15 1 6 TRUE
20.00 0.15 1 3 TRUE
20.00 0.15 1 16 TRUE
20.00 0.15 1 7 TRUE
20.00 0.15 1 2 TRUE
20.00 0.15 1 14 TRUE
20.00 0.15 1 4 TRUE
20.00 0.15 1 8 TRUE
20.00 0.15 1 11 TRUE
20.00 0.15 1 1 TRUE
20.00 0.15 1 12 TRUE
20.00 0.15 1 13 TRUE
20.00 0.15 1 15 TRUE
20.00 0.15 1 17 TRUE
Robert Emonds
ven, 27/09/2024 - 10:59
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Simulate data
Thank you for testing, Theo.
The dataset that the button “Simulate data” produced, based on your input, is as designed. It seems you were expecting something different. Could you please describe what exactly?
mdvalphen
mer, 16/07/2025 - 12:07
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guideline
is er een guideline hoe data in te voeren?
Robert Emonds
jeu, 17/07/2025 - 11:25
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guideline
De gegevensinvoer is redelijk eenvoudig en wordt toegelicht in de titel van het invoervenster.
Gebruik vijf kolommen gescheiden door tab-karakters (Alt+09):
TWA-8h, worker, date, detect, CVt.
De handigste manier is kopiëren en plakken vanuit Excel. Je vindt een voorbeeld in het bestand BWStat dataset - cotton dust.xlsx.
Vergeet niet om het decimaal teken te selecteren dat past bij het formaat van jouw numerieke gegevens.