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Notices by drak (drak@sn.1w6.org), page 134

  1. drak (drak@sn.1w6.org)'s status on Friday, 15-Jun-2018 12:48:56 EDT drak drak
    The one innovation of WhatsApp: Your account is tied to a tangible object—which most people already have: Your SIM card. That stops spammers
    In conversation Friday, 15-Jun-2018 12:48:56 EDT from sn.1w6.org permalink
  2. drak (drak@sn.1w6.org)'s status on Friday, 15-Jun-2018 09:46:54 EDT drak drak
    "situations discussed here may lead to physical scenarios with indefinite causal structure" → http://www.pnas.org/content/early/2017/03/06/1616427114 there goes causality: "clocks interacting gravitationally get entangled due to gravitational time dilation" — love!
    In conversation Friday, 15-Jun-2018 09:46:54 EDT from sn.1w6.org permalink

    Attachments

    1. File without filename could not get a thumbnail source.
      Entanglement of quantum clocks through gravity
      from PNAS
      We find that there exist fundamental limitations to the joint measurability of time along neighboring space–time trajectories, arising from the interplay between quantum mechanics and general relativity. Because any quantum clock must be in a superposition of energy eigenstates, the mass–energy equivalence leads to a trade-off between the possibilities for an observer to define time intervals at the location of the clock and in its vicinity. This effect is fundamental, in the sense that it does not depend on the particular constitution of the clock, and is a necessary consequence of the superposition principle and the mass–energy equivalence. We show how the notion of time in general relativity emerges from this situation in the classical limit. In general relativity, the picture of space–time assigns an ideal clock to each world line. Being ideal, gravitational effects due to these clocks are ignored and the flow of time according to one clock is not affected by the presence of clocks along nearby world lines. However, if time is defined operationally, as a pointer position of a physical clock that obeys the principles of general relativity and quantum mechanics, such a picture is, at most, a convenient fiction. Specifically, we show that the general relativistic mass–energy equivalence implies gravitational interaction between the clocks, whereas the quantum mechanical superposition of energy eigenstates leads to a nonfixed metric background. Based only on the assumption that both principles hold in this situation, we show that the clocks necessarily get entangled through time dilation effect, which eventually leads to a loss of coherence of a single clock. Hence, the time as measured by a single clock is not well defined. However, the general relativistic notion of time is recovered in the classical limit of clocks.
  3. drak (drak@sn.1w6.org)'s status on Friday, 15-Jun-2018 09:40:51 EDT drak drak
    "sug.…breakdown of the measurability of time at larger distance and lower energy scales" http://pnas.org/content/early/2017/03/06/1616427114
    In conversation Friday, 15-Jun-2018 09:40:51 EDT from sn.1w6.org permalink

    Attachments

    1. File without filename could not get a thumbnail source.
      Entanglement of quantum clocks through gravity
      from PNAS
      We find that there exist fundamental limitations to the joint measurability of time along neighboring space–time trajectories, arising from the interplay between quantum mechanics and general relativity. Because any quantum clock must be in a superposition of energy eigenstates, the mass–energy equivalence leads to a trade-off between the possibilities for an observer to define time intervals at the location of the clock and in its vicinity. This effect is fundamental, in the sense that it does not depend on the particular constitution of the clock, and is a necessary consequence of the superposition principle and the mass–energy equivalence. We show how the notion of time in general relativity emerges from this situation in the classical limit. In general relativity, the picture of space–time assigns an ideal clock to each world line. Being ideal, gravitational effects due to these clocks are ignored and the flow of time according to one clock is not affected by the presence of clocks along nearby world lines. However, if time is defined operationally, as a pointer position of a physical clock that obeys the principles of general relativity and quantum mechanics, such a picture is, at most, a convenient fiction. Specifically, we show that the general relativistic mass–energy equivalence implies gravitational interaction between the clocks, whereas the quantum mechanical superposition of energy eigenstates leads to a nonfixed metric background. Based only on the assumption that both principles hold in this situation, we show that the clocks necessarily get entangled through time dilation effect, which eventually leads to a loss of coherence of a single clock. Hence, the time as measured by a single clock is not well defined. However, the general relativistic notion of time is recovered in the classical limit of clocks.
  4. drak (drak@sn.1w6.org)'s status on Friday, 15-Jun-2018 09:34:51 EDT drak drak
    "the Brightest Point in Human History…ISO 8601" → https://zachholman.com/talk/utc-is-enough-for-everyone-right musings on programming time
    In conversation Friday, 15-Jun-2018 09:34:51 EDT from sn.1w6.org permalink
  5. drak (drak@sn.1w6.org)'s status on Friday, 15-Jun-2018 05:53:57 EDT drak drak
    Using eshell as shell: https://ambrevar.bitbucket.io/emacs-eshell/
    In conversation Friday, 15-Jun-2018 05:53:57 EDT from sn.1w6.org permalink
  6. drak (drak@sn.1w6.org)'s status on Friday, 15-Jun-2018 05:25:24 EDT drak drak
    Wenn du von Klimawissenschaft in Programmierung wechselst und die Firma auch für den Deutschen Wetterdienst arbeitet: https://www.geobranchen.de/mediathek/geonews/item/moderne-beratungs-module-f%C3%BCr-den-dwd — die Lebenswelt ist klein … :-)
    In conversation Friday, 15-Jun-2018 05:25:24 EDT from sn.1w6.org permalink
  7. drak (drak@sn.1w6.org)'s status on Friday, 15-Jun-2018 04:24:56 EDT drak drak
    Die Tagesschau darf nicht mehr so viele Texte veröffentlichen ⇒ Ich brauche Spracherkennung → https://cmusphinx.github.io/wiki/tutorial/
    In conversation Friday, 15-Jun-2018 04:24:56 EDT from sn.1w6.org permalink

    Attachments

    1. File without filename could not get a thumbnail source.
      CMUSphinx Tutorial For Developers
      from CMUSphinx Open Source Speech Recognition
      CMUSphinx is an open source speech recognition system for mobile and server applications. Supported languages: C, C++, C#, Python, Ruby, Java, Javascript. Supported platforms: Unix, Windows, IOS, Android, hardware.
  8. drak (drak@sn.1w6.org)'s status on Thursday, 14-Jun-2018 08:32:56 EDT drak drak
    in reply to
    • drak
    @ChromiumDev … headers: X-Alt, X-NAlt (vs. spam) and X-Content-URN; see http://rfc-gnutella.sourceforge.net/developer/tmp/download-mesh.html
    In conversation Thursday, 14-Jun-2018 08:32:56 EDT from sn.1w6.org permalink
  9. drak (drak@sn.1w6.org)'s status on Thursday, 14-Jun-2018 08:29:11 EDT drak drak
    @ChromiumDev it would be great if web packages could be exchanged decentrally. Gnutella proved that adding three headers suffices for that …
    In conversation Thursday, 14-Jun-2018 08:29:11 EDT from sn.1w6.org permalink
  10. drak (drak@sn.1w6.org)'s status on Wednesday, 13-Jun-2018 17:48:16 EDT drak drak
    • Science (News, Articles, …)
    New Horizons for !Science: http://www.draketo.de/english/songs/new-horizons-science — auch auf https://www.youtube.com/watch?v=GvPQXY0wx7w
    In conversation Wednesday, 13-Jun-2018 17:48:16 EDT from sn.1w6.org permalink

    Attachments

    1. Invalid filename.
      New Horizons for Science
      By Arne Babenhauserheide from YouTube
  11. drak (drak@sn.1w6.org)'s status on Wednesday, 13-Jun-2018 05:45:30 EDT drak drak
    Two visions of our future: http://www.draketo.de/english/politics/roll-a-die — how to save our civilization *now*
    In conversation Wednesday, 13-Jun-2018 05:45:30 EDT from sn.1w6.org permalink
  12. drak (drak@sn.1w6.org)'s status on Tuesday, 12-Jun-2018 16:53:33 EDT drak drak
    Researchers Studied 160 Million Memes and Found Most of Them Come From Two Websites - A study of hundreds of millions of images ... reveals how memes spread https://motherboard.vice.com/en_us/article/zm884j/where-do-memes-come-from-researchers-studied-reddit-4chan
    In conversation Tuesday, 12-Jun-2018 16:53:33 EDT from sn.1w6.org permalink

    Attachments

    1. Invalid filename.
      Researchers Studied 160 Million Memes and Found Most of Them Come From Two Websites
      from Motherboard
      A study of hundreds of millions of images from Reddit, 4chan, Gab, and Twitter reveals how memes spread.
  13. drak (drak@sn.1w6.org)'s status on Tuesday, 12-Jun-2018 14:22:29 EDT drak drak
    I am also an independent researcher and with Article 13 I would be blocked, because I stopped working at a university last year to be able to offer my children a future where we do not have to move to another city or country every few years. https://www.saveyourinternet.eu/
    In conversation Tuesday, 12-Jun-2018 14:22:29 EDT from sn.1w6.org permalink

    Attachments

    1. File without filename could not get a thumbnail source.
      Home ACTION DAY
      from Save Your Internet
      Home ACTION DAY
  14. drak (drak@sn.1w6.org)'s status on Tuesday, 12-Jun-2018 14:18:51 EDT drak drak
    I am author of several personal websites, I write books, software and scientific publications, and I publish my own music. I do not want a copyright law with article 13 which restricts online freedom. https://www.saveyourinternet.eu/
    In conversation Tuesday, 12-Jun-2018 14:18:51 EDT from sn.1w6.org permalink

    Attachments

    1. File without filename could not get a thumbnail source.
      Home ACTION DAY
      from Save Your Internet
      Home ACTION DAY
  15. drak (drak@sn.1w6.org)'s status on Tuesday, 12-Jun-2018 07:54:12 EDT drak drak
    Wo die Ziele Chinas mit denen der Tech-Bastler und Copyleft Hardware zusammenfallen können: http://blog.fefe.de/?ts=a5e087f3
    In conversation Tuesday, 12-Jun-2018 07:54:12 EDT from sn.1w6.org permalink
  16. drak (drak@sn.1w6.org)'s status on Tuesday, 12-Jun-2018 07:49:05 EDT drak drak
    "Dank der DSGVO haben spanische Nutzer erfahren, dass die App ihrer Fußball-Liga übers Mikro nach nicht lizenzierten, öffentlichen Übertragungen fahndet." http://blog.fefe.de/?ts=a5e05783
    In conversation Tuesday, 12-Jun-2018 07:49:05 EDT from sn.1w6.org permalink
  17. drak (drak@sn.1w6.org)'s status on Tuesday, 12-Jun-2018 03:09:27 EDT drak drak
    LuaJIT is awesome: FFI calls beating native code (but pay with higher memory cost) → https://nullprogram.com/blog/2018/05/27/
    In conversation Tuesday, 12-Jun-2018 03:09:27 EDT from sn.1w6.org permalink
  18. Free Software Foundation (fsf@status.fsf.org)'s status on Monday, 11-Jun-2018 14:00:57 EDT Free Software Foundation Free Software Foundation
    The copyleft symbol has been added to Version 11.0 of the Unicode Standard! https://u.fsf.org/2lq
    In conversation Monday, 11-Jun-2018 14:00:57 EDT from status.fsf.org permalink Repeated by drak

    Attachments

    1. Invalid filename.
      Announcing The Unicode® Standard, Version 11.0
      Version 11.0 of the Unicode Standard is now available, both the core specification and data files. Version 11.0 adds 684 characters, for a...
  19. Free Software Foundation (fsf@status.fsf.org)'s status on Monday, 11-Jun-2018 14:00:57 EDT Free Software Foundation Free Software Foundation
    The copyleft symbol has been added to Version 11.0 of the Unicode Standard! https://u.fsf.org/2lq
    In conversation Monday, 11-Jun-2018 14:00:57 EDT from status.fsf.org permalink Repeated by drak

    Attachments

    1. Invalid filename.
      Announcing The Unicode® Standard, Version 11.0
      Version 11.0 of the Unicode Standard is now available, both the core specification and data files. Version 11.0 adds 684 characters, for a...
  20. Free Software Foundation (fsf@status.fsf.org)'s status on Monday, 11-Jun-2018 12:16:36 EDT Free Software Foundation Free Software Foundation
    In case you missed it: there is no need to panic or discontinue using GPG, including for signing emails or for encrypting and decrypting files outside of your email client. Here are the facts: https://u.fsf.org/2lp
    In conversation Monday, 11-Jun-2018 12:16:36 EDT from status.fsf.org permalink Repeated by drak
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