• 0 Posts
  • 35 Comments
Joined 1 year ago
Cake day: June 24th, 2023
  • soEZ@lemmy.worldtoTechnology@lemmy.world•Tesla Full Self Driving Is Now 'End-To-End AI'English
    42·
    10 months ago

    It’s not really a sensor issue, as much as having software that can interpret the sensor data and act on it. Cameras and lidar effectively provide same thing, distance to objects in 2d/3d. But u need software to process that data and identify where the road is, where little jonny is, and what to do…arguably, the distance measuring problem has been solved for a while with lidar or with cameras, it’s object identification and reaction to that info that’s not solved. You can’t really solve it with traditional if/else programming, while AI gives you only a probability of what something is or what action to do…so the problem is hard.

    But ntsb/dmv whatever needs to come up with a way to test and classify autonomous driving software…probably doing real world test and identifying edge cases where it fails.

  • soEZ@lemmy.worldtoNews@lemmy.world•America Is Using Up Its Groundwater Like There’s No Tomorrow
    121·
    10 months ago

    This a really bad take. Seawater deal with RO is a marvel of efficiency, only 2-3 times above the thermodynamic limit of demixing water from salt. It does not really generate toxic waste like coal fired power plants, but does produce lots of brine with various organics (antiscalants, surfactants etc.) that are not that great. The key issue is water is very cheap from traditional sources (surface water and groundwater) and requires rather crude treatment to be usable, resulting in very low cost. Hence why desal is used in areas where they have no choice. If you don’t have surface/ground water source or brackish water source you are doing seawater deal or leave the area…not many choices. At least RO is electrified so it can use renewables but that does not really solve the much higher cost…or issue of brine generation, with zld have a set of it’s own issues costs…

  • soEZ@lemmy.worldtoTechnology@lemmy.world•Hydrogen-powered planes almost ready for takeoffEnglish
    4·
    11 months ago

    This seems to be a key point ppl miss. There is still quiet a big question if cdr and storage can be net negative…for example one place we want to store co2 is in saline basins, but this will require disposal and treatment of the brines removed from the basin…which might emit might end up emmiting as much co2 as ends up being stored in the saline basin. There is a paper on this issue…

  • soEZ@lemmy.worldtoTechnology@lemmy.world•Hydrogen-powered planes almost ready for takeoffEnglish
    9·
    11 months ago

    CO2 to syngas to hydrocarbon fuels is probably a better carbon zero process, considering we will need to do a ton of cdr anyway…although doubt energetics and economics would be great. Hydrogen, just like biofuels today are anything but carbon neutral, and efficient electrolysis might never happen. Hydrogen production will also face water shortage issues and in general electrolysis requires pretty low tds water which is not trivial to source…not sure what’s best way to get carbon zero airplanes honestly…