Viewing profile — xxgreg
xxgreg
HN member- Joined
- Fri, Sep 09, 2011, 10:49 PM UTC
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- 169 items
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About xxgreg
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Recent public activity
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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…
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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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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 …
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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…
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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…
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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…
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Comment #28421473
hmmm interesting - here's an article. https://qz.com/2004569/the-global-chip-shortage-can-be-expla...
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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 …
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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 …
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Comment #27954141
There's also ongoing development on "starnix" which aims to run unmodified Linux binaries.
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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…
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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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Comment #22714971
NZ Crayfish are called Rock Lobster in the US. http://www.leefishusa.com/products/lobster/spiny
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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…
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Comment #22421544
Pedantic answer... You could start at 0 Kelvin. https://en.wikipedia.org/wiki/Absolute_zero
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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...
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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…
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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/…
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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…
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Comment #22272621
Phrase it how you will, but this chart shows it clearly. https://www.cleanenergywire.org/sites/default/files/styles/g...
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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... …