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xxgreg

HN member
Joined
Fri, Sep 09, 2011, 10:49 PM UTC
HN karma
258
Public activity
169 items

About xxgreg

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Recent public activity

  1. comment
    Comment #40163602

    Don't use floats if you're trying to represent an exact value, i.e. someones bank account. But in financial modelling you're generally dealing in probabilistic "expected values", i…

  2. comment
    Comment #30392102

    If given a question about reversing a string, it lets you ask the interviewer questions like: * Do you want to do it in-place or as a copy? * Is it an ASCII or Unicode string? If u…

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  4. comment
    Comment #29731351

    Thanks for taking the time to write these comments. In my opinion, existing tech is able to solve the climate crisis. Breakthroughs can make the solution cheaper and sooner. In my …

  5. comment
    Comment #29730816

    The cause is a political battle with Putin over gas. Russia has traditionally used gas contracts with individual countries to buy political influence. Now the EU has a single gas m…

  6. comment
    Comment #29666092

    Primary energy consumption isn't a great metric for comparing with renewable electricity, since for conventional plants it includes the unused energy lost as heat. A fossil power p…

  7. comment
    Comment #29609423

    There's also ongoing work to build a dependency vulnerability database. This is proposed to be surfaced via a built in `go audit` command. https://go.googlesource.com/proposal/+/ma…

  8. comment
    Comment #28421473

    hmmm interesting - here's an article. https://qz.com/2004569/the-global-chip-shortage-can-be-expla...

  9. comment
    Comment #28419851

    All of the car companies, dialed down orders at the start of the pandemic. Now they are all trying to stockpile chips, due to not enough supply. I imagine (no data to support) the …

  10. comment
    Comment #28320539

    Travel was open with Australia until the recent outbreak there. Using virus genome sequencing, this outbreak has been traced to a New Zealander who caught the virus in Sydney, and …

  11. comment
    Comment #27954141

    There's also ongoing development on "starnix" which aims to run unmodified Linux binaries.

  12. comment
    Comment #27945282

    I hope France finds a path forward. Last I read it's sitting on an aging fleet of reactors, and failing to build new ones in a timely manner. The big German power companies definit…

  13. comment
    Comment #27927559

    Where is the big increase in coal? If you look at the stats coal use is down. https://www.cleanenergywire.org/sites/default/files/styles/g... What is not well known in the Anglosph…

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  15. comment
    Comment #22714971

    NZ Crayfish are called Rock Lobster in the US. http://www.leefishusa.com/products/lobster/spiny

  16. comment
    Comment #22421579

    It is phrased this way because the changing climate is what negatively affects civilization. While it is an energy imbalance which causes the climate to change, modifying the energ…

  17. comment
    Comment #22421544

    Pedantic answer... You could start at 0 Kelvin. https://en.wikipedia.org/wiki/Absolute_zero

  18. comment
    Comment #22421478

    China has piloted a number of carbon pricing schemes since 2013. It is introducing a nationwide scheme this year. https://www.reuters.com/article/climate-change-china-idUSL3N...

  19. comment
    Comment #22417546

    "An autopilot is a system used to control the trajectory of an aircraft, marine craft or spacecraft without constant manual control by a human operator being required. Autopilots d…

  20. comment
    Comment #22274079

    Another chart... Note some stats are percentage of consumption, others are percentage of generation. These differ due to imports and exports. https://www.cleanenergywire.org/sites/…

  21. comment
    Comment #22274067

    This assumes that the nuclear reactors could ramp up and down on a daily basis. Germany's reactors weren't capable of load following to the extent required. In fact brokdorf was ta…

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    Comment #22272716

    Most of Japan's electricity is from imported LNG, so doesn't make much difference to independence. They already import this energy.

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    Comment #22272690

    You can convert electricity, water and CO2 to fuels, such as hydrogen and natgas. These fuels can then be transported. There are significant energy losses if all you want on the ot…

  24. comment
    Comment #22272621

    Phrase it how you will, but this chart shows it clearly. https://www.cleanenergywire.org/sites/default/files/styles/g...

  25. comment
    Comment #22272412

    The same thing did not happen in Germany. The increase in renewables more than made up for the decrease in nuclear. https://www.cleanenergywire.org/sites/default/files/styles/g... …