Physics as a Challenge.

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CP2K, where is my electron?

If you do unrestricted DFT calculations with CP2K for charged systems, you may wonder which spin channel the electron is taken from or added to. Moreover, the sign convention for any output (Hirshfeld or...

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Phusion Passenger and Django Deadlock

If you have the following symptom: You use Django and Phusion Passenger in at least version 4. A specific request is waiting forever. Restarting apache has no effect. Then you can check for the...

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Network File Systems and Default Permissions

If you collaborate with other people, you want to share information. In my field, computational physics/chemistry, the amount of data is so large that you cannot use sharing services or cloud mechanisms even if...

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Office 365 and Email Settings

When adding my email inbox from UCL to the K9 android email client, I got the problem that this does not work out of the box: K9 cannot connect to the Office 365 server....