Dear all,
We are looking for a beamline scientist with a focus on our X-ray emission spectrometer at the ACT station, CAT-ACT beamline at the KIT Light Source, Germany. Please note that the position is initially for two years; however, we are strongly committed to extending it and offering a long-term perspective.
https://www.pse.kit.edu/english/karriere/joboffer.php?id=164749
Unlike a classical user operation, the beamline scientist will support our own projects and collaborative projects.
Thank you for applying or forwarding the opening to suitable candidates.
All the best,
Tonya Vitova
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Subject: Ifeffit Digest, Vol 275, Issue 6
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Today's Topics:
1. Help with constrains (Otal Eugenio)
2. Re: Help with constrains (Matt Newville)
----------------------------------------------------------------------
Message: 1
Date: Thu, 30 Jan 2025 18:48:18 +0900
From: Otal Eugenio
Subject: [Ifeffit] Help with constrains
To: XAFS Analysis using Ifeffit
Message-ID:
Content-Type: multipart/alternative;
boundary="00000000000088cc25062ce95500"
Hi all,
I am experiencing an issue with CN and sigma2, which are correlated. My CN value is too high, and I would like to reduce it to see if I can improve the fit.
I have three questions:
1. Are constraints a viable option? If not, could you clarify the
alternatives?
2. The examples I found are in Python, but I am using the GUI. How
should I correctly define a constraint? GPT suggested the following:
max(4, 12 * exp(-sigma2_O232 / 0.02)), is it correct?
3. I attempted to apply this constraint, but now I cannot delete it.
Restarting Larch for each value is not a practical solution. How can I
modidy the constraint efficiently?
Thank you for your help!
Best regards,
