> Every time I think about EVs, I become filled with dread thinking about what will happen if an area loses power for an extended period of time
A mid-size EV battery can easily store 60kWh of energy. That's enough to power a domestic refrigerator for ~12 days (assuming 200w average power usage, which is on the higher end).
I lost power for about a day last year and was very happy to be able to keep my fridge and some emergency lighting powered from an EV battery.
Can you source that? Diesel is only 13% more energy dense than gasoline [1] so the difference between the two fuels isn't huge.
I suspect that modern (last five years) turbocharged gasoline engines are probably approaching diesel thermal efficiency, but I don't think that it's correct to say that they generally surpass it. The gasoline Ford EcoBoost is 33% thermally efficient while a BMW N47 turbo-diesel is 42% thermally efficient, as an example [2].
The Toyota community has been far down that road with the DCM module in the new gen cars and found that the car still managed to get updates out to Toyota even with 50 ohm terminating resistors in the antenna connectors: https://www.tacomaworld.com/threads/simpler-solution-for-dis... (see the posts by user "Disgruntled Scientist").
Unfortunately simply cutting power to the telematics module also disables the in-car microphone for handfree calling. Fully disabling telematics involves making a bypass harness that re-routes the microphone and speaker signals past the disabled DCM module.
> So we had to derive from them derived streams that didn't show temporal dependencies any longer, at least not as strongly
Could you expand on that (or at least point me towards some keywords to read up on)?
I think I understand conceptually what this means (network latency increases at noon CDT each day because YouTube load increases during the lunch hour, as an example) but I'm wondering how you normalize data streams for temporal dependencies with unknown frequencies (nominal change #1 happens each Sunday, while nominal change #2 happens each day at noon).
That's where you need time series models. Take a look at linear filters and how to handle seasonal variations.
It gets interesting when there are different frequencies at play simultaneously, like in your example -- day of the week and time of day effects. If their periods are mutually prime that's more convenient to handle as they are orthogonal in the Fourier space.
Wouldn't want to endanger the homeless by letting them sleep under a church roof without the the state's approval, much safer to keep them sleeping on the side of the highway and arrest the pastor /s.
Given that steam turbine efficiency depends on the temperature delta between steam input and condenser, unlikely unless you're somehow going to adapt Nvidia GPUs to run with cooling loop water at 250C+.
> Something or someone really, really wants you to be comfortable with violence.
Instagram started serving me violent content out of the blue recently. My reels feed went from mostly hiking and skiing videos to POV videos from Ukrainian and Russian grenade drones and accelerationist "joke" videos normalizing the idea of war with China.
It was like a switch had flipped with how suddenly the app was like "let's warp this guy's sense of normalcy".
> Yes, but the economic rationale of immigration is to have younger workers who can pay into the system to buffer the growing older population
Is it though? Not passing judgement either way, but the most common economic rationale for immigration generally seems to be that it's a source of cheap labor.
> That can’t happen if the immigrants never pay in more than they take out at any point in their life.
If the surplus economic value created by immigrants who are employed is generally not returned to them in the form of high wages, then yeah, they're not going to be paying it to the government as taxes.
I guess what I'm trying to say here is that a lot of people in this thread seem to be conflating per-person net economic benefit and net tax payments. The first can be significantly positive while the second is negative.
> Is it though? Not passing judgement either way, but the most common economic rationale for immigration generally seems to be that it's a source of cheap labor.
If you have cheap labor who draw more in public services than they pay in taxes, then you're using tax dollars to effectively subsidize private profits. Maybe that's the unstated rationale, but few proponents of immigration would say that out loud.
> Something very strange happened in the last 20 years.
Tech companies discovered that the most profitable position to be in was global middleman, at a scale previously impossible before everything was connected by the internet. They undercut a given market until all the alternatives become financially non-viable and then start hoovering up all the margins from both sides (producer and consumer) of the deal.
As someone who works in US manufacturing, the situation is much more dire and I think the "low quality / high quality" back-and-forth is burying the lede.
It's not just that China has reached some kind of quality parity with North America. There are now significant market segments that the US functionally cannot manufacture because we completely ceded the institutional knowledge and infrastructure in favor of financialization and outsourcing of the US economy.
My specific area of expertise is robotic / computer controlled manufacturing equipment and a lot of the components (high precision servos, sensors and other motion components) are functionally impossible to source domestically. There are still some boutique manufacturers making things in low efficiency / low volume in the USA but touring the manufacturing campuses of Chinese suppliers has been shocking in the last five years. The sheer scale of efficient, automated assembly they are capable of operating at makes a big-three automotive assembly line look like a dirt-floored shack with men knocking things together with rocks.
They are laser focused on lights-out manufacturing at extreme volume in ways I have never seen in the US. Entire production lines of high complexity electronics that are completely vertically integrated (everything from the injection molding for the plastic enclosure to the PCB manufactured on one campus) with human hands touching them for the first time as they leave the automated quality control line to be boxed up.
I don't think American people fully comprehend the brain and skill drain that has already taken place.
Do you think this can be reversed and brought back in one generation? Two? Three?
Assume a generation to be about 21 years (birth to high school + trade training).
Our business leaders since the 1980s failed to quantify the cost of a possible revamp, and I wonder what the true cost will end up being.
I’ve seen some of the Great Lake cities and towns that are in sad shape; but I was too young (and being
immigrants, also too poor) to tour those areas in any depth in the Reagan/Carter days so I can only imagine what they were like back then.
A mid-size EV battery can easily store 60kWh of energy. That's enough to power a domestic refrigerator for ~12 days (assuming 200w average power usage, which is on the higher end).
I lost power for about a day last year and was very happy to be able to keep my fridge and some emergency lighting powered from an EV battery.
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