Actually it's worse than that. Most of the energy expended by a (gas) car is exhausted as waste heat, then most of the *remaining* energy is spent on moving the weight of the car.
17.10.2025 23:26 β π 7 π 0 π¬ 0 π 0@jhelvy.bsky.social
Systems Eng Prof @ GWU π¦ | Director, Data Analytics MS Program | EVs ππ | Low Carbon Tech | Choice Modeling | Survey Research | China | US-China Policy | #rstats | #reproducibility | #opensource | Father | opinions own
Actually it's worse than that. Most of the energy expended by a (gas) car is exhausted as waste heat, then most of the *remaining* energy is spent on moving the weight of the car.
17.10.2025 23:26 β π 7 π 0 π¬ 0 π 0I knew MIT hired smart people
www.nytimes.com/2025/10/10/u...
Staunton, Virginia
08.10.2025 23:26 β π 0 π 0 π¬ 0 π 0#Rstats, #python, #julialang
08.10.2025 10:49 β π 19 π 3 π¬ 4 π 1If someone was applying for a job and they sent me a file like this, I'd hire them.
06.10.2025 18:28 β π 5 π 0 π¬ 0 π 0The south park satire of ICE is not satire.
02.10.2025 23:35 β π 5 π 1 π¬ 0 π 1Great article in Newsweek by Rebecca Fannin on the dominant position of Chinese EVs globally and the implications for the future of automotive and defense. Well-researched article with quotes from me, Paul S. Triolo, Michael Dunne, Kara Kockelman, and others.
www.newsweek.com/chinas-ev-su...
U.S. Dept. of Energy Office of
Energy Efficiency and Renewable Energy banned from using words like "climate change" or "emissions"...you know, phrases that have nothing to do with things like energy efficiency or renewable energy π€¦ββοΈ
www.politico.com/news/2025/09...
Doing harm to universities and science is the point
27.09.2025 16:35 β π 3 π 1 π¬ 0 π 0He would still be working for ICE if he was wearing a mask in this video
27.09.2025 13:03 β π 60 π 8 π¬ 3 π 0I write like 1,000 functions before writing a single test function for any of them
27.09.2025 13:01 β π 2 π 0 π¬ 2 π 0Very cool experiment! Glad you were able to leverage surveydown for it :)
Btw, on performance we have found deploying on posit connect cloud to be much snappier
docs.posit.co/connect-clou...
Screenshot of my cancellation of Disney plus. Message says "I am cancelling because Disney is run by a coward too afraid to stand up to fascism"
Looks like we'll just have to watch Bluey on YouTube from now on
20.09.2025 14:36 β π 7 π 0 π¬ 0 π 0$40k for an EV with just 216 miles of range does not even qualify as "average" imo. That's a very tough sell in a market where you can get a similar gas car for at least $10k less. Make that same EV for $25k and it'll sell like crazy, even if it had the interior of a Corolla.
19.09.2025 00:23 β π 0 π 0 π¬ 0 π 0For those at #positconf I'll be presenting this in one hour in Regency VII!
surveydown.org
The GOAT RStudio addin by @milesmcbain.bsky.social
17.09.2025 14:15 β π 2 π 0 π¬ 0 π 1duckdb is great for speed and doing analysis with large sizes. Data size is pretty small for surveys, and what we needed is something very mature and stable and easy to build on.
14.09.2025 10:50 β π 2 π 0 π¬ 0 π 0The man did not deserve to be murdered, but no, he did not practice politics the "right way" @ezrakleinbot.bsky.social. Calling your opponents cockroaches and saying gay people should be stoned is exactly the kind of dehumanizing language that leads to violence and should be condemned, not envied.
11.09.2025 14:32 β π 7 π 0 π¬ 0 π 0Political violence of all kinds is wrong, criminal, and must be condemned, regardless if it is committed against an inspirational and honorable lawmaker from Minnesota or a far-right activist who believed that having some "unfortunate" gun deaths each year is worth it for the 2nd amendment
11.09.2025 10:24 β π 13 π 0 π¬ 1 π 0line chart of surveydown repo, which went from ~5 stars to 125+ in 18 months π
One week til I present on our survey platform surveydown at #positconf! If you've ever wanted a #Quarto for surveys, this is it! π
#rstats
surveydown.org
I'm no political strategist, but I'd say the illegal occupations of our cities are rather unpopular. The Dems once again will have an opportunity to say something about that: end the occupations, or we shut the government down. But I also expect that they will, again, cave.
08.09.2025 17:12 β π 3 π 1 π¬ 1 π 0Oh boy... apologies if this is partially my fault π€¦ββοΈ
04.09.2025 11:29 β π 2 π 0 π¬ 1 π 0Oh you wanted secret tech. Oh yeah no it's all very much in the open how far ahead they are in EV and battery tech.
03.09.2025 16:20 β π 3 π 0 π¬ 1 π 0You should at take a look at the EVs being made in China vs everywhere else in the world.
03.09.2025 16:16 β π 0 π 0 π¬ 1 π 0