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totallyabstract

HN member
Joined
Thu, Nov 21, 2019, 10:37 PM UTC
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17 items

About totallyabstract

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Recent public activity

  1. comment
    Comment #39663790

    Jet fuel has no lead, it's basically kerosene. Avgas for reciprocating engines (basically only small general aviation planes/helicopters) currently contains lead but is moving to b…

  2. comment
    Comment #39570152

    I think this is a bit of a pedantic take. My reading of the GP is to distinguish systems based on chemical batteries from systems based on gravitational batteries rather than the r…

  3. comment
    Comment #39452973

    Also have to take into account that number was at ground level where there is the highest air density. I’m not sure what the landing and takeoff profiles looked like in the design …

  4. comment
    Comment #39437537

    Sorry poor terminology use on my part. I mean more broadly that most energy is used on frontend and middle end, rather than backend and that this is what vectorisation improves in …

  5. comment
    Comment #39436202

    Wouldn't that support the idea that most energy consumption is in decoding? If you're getting 2x, 4x, 8x ect as much value computation per instruction and yet only a 30% increase i…

  6. comment
    Comment #30983693

    Clickable links: https://jira.atlassian.com/browse/BCLOUD-12503 https://jira.atlassian.com/browse/BCLOUD-13021

  7. story
    Six years on Atlassian still can’t add basic features to Bitbucket

    Link to the feature request, there are some humorous comments nestled amongst the +1s: https://jira.atlassian.com/browse/BCLOUD-12503 A similar feature request for a “needs work” s…

  8. comment
    Comment #30926693

    A French company made a product along these lines already, but I don’t think it’s been updated since 2018: https://blog.qarnot.com/introducing-the-qc-1-crypto-heater/ It’s true thi…

  9. comment
    Comment #30549068

    For some two-way wireless protocols (like wifi) you have to take into account the guard interval, slot times and interframe spacing which are all values set in time (~1-50us). For …

  10. comment
    Comment #28252220

    Presumably two different instances of this clock would have different tick rates due to the specific crystal used and it's very difficult to produce two identical crystals. An atom…

  11. comment
    Comment #27000809

    There are separate micro op caches per core however they are typically shared among hyperthreads. I wonder if this could be another good reason for cloud vendors to move away from …

  12. comment
    Comment #26871103

    It will be interesting see if the next waves of wifi products solve this. For Wifi 6 and Halow there's a new feature called 'target wake time' that will let these devices sleep (an…

  13. comment
    Comment #26301199

    A recent development not mentioned in this article is Wi-Fi Halow/802.11ah, this is a new standard using the 900MHz ISM band. Advantages of this are better signal penetration/range…

  14. comment
    Comment #23719415

    You'd need two KC-46 to fully refuel a 747-400F. KC-46 holds about 120KL of fuel, the 747 takes about 200KL.

  15. comment
    Comment #22439857

    It depends what your are doing. Some chips can get down to about 100uw to maintain associated and send small amounts of data. I'm not sure how they would compare at 2mbit or how th…

  16. comment
    Comment #21767029

    It isn't an issue for smaller planes (A320, 737), but larger planes (such as 747, 777, A340, A380) usually have a lower maximum landing weight than their takeoff weight. If an emer…

  17. comment
    Comment #21600647

    Some silicon labs arm MCUs and radios have hardened crypto core and hardened bootloaders. Their closest equivalent to the esp32 is the wgm160p but it lacks Bluetooth and costs more…