ProfCharlesHaas

@ProfCharlesHaas@mastodon.social

Betz Prof. Environ Eng - Drexel University. #Disinfection, #risk assess.,
#QMRA #COVID19
#water. Class of 2021 (US) National Academy of Engineering.
usual disclaimers.
https://drexel.edu/engineering/about/faculty-staff/H/haas-charles/

Associations:
#AAESP #AAEES #ASCE #AWWA #WEF #ASM #AAAS #ASEE

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ProfCharlesHaas, to random

I’ve become a convert to the #JohnnyDecimal system which has reminded me of the utility of carefully indexed library catalogs and the benefit of cross indexing. #Devonthink and #Obsidian are also in my workflow. @johnnydecimal @devontechnologies @obsidian https://spookygirl.boo/notes/9sj5q5gyqx5k9lzw

ProfCharlesHaas, to random


If you've been hit by cars twice and survived, it means you’ve acquired immunity to car fatality and can safely ignore “don’t walk” signals at crosswalks.

lauren, to random
@lauren@mastodon.laurenweinstein.org avatar

I've never really understood why anyone who didn't have to would voluntarily choose to live in a high rise building.

ProfCharlesHaas,

@lauren Been living in them for decades. Our high rise condo allows cats (we have three of them) and they and we all enjoy the view. 24/7 door person, package pickup, good maintenance staff (and cable, HVAC, electric and gas all rolled into our monthly fee). Oh, and we don't need to bother with snow shoveling, and have decent mass transit from 1-3 blocks away depending on where we want to go.

DenisCOVIDinfoguy, to auscovid19
@DenisCOVIDinfoguy@aus.social avatar

Avoiding COVID was about more than just keeping 2 metres apart, Oxford University study finds

"The researchers found that longer exposures at greater distances had a similar risk to shorter exposures at closer distances"

#COVIDisAirborne #COVIDisNotOver @auscovid19

Source: https://www.euronews.com/next/2023/12/29/avoiding-covid-19-was-about-more-than-just-keeping-2-metres-apart-study-finds

ProfCharlesHaas,
augieray, (edited ) to random
@augieray@mastodon.social avatar

The US hasn't had a week with less than 1,000 deaths in four months. I really don't understand people's blasé attitude about COVID. If I were to tell you that 5 to 10 airliners would fall from the sky every week, half of the US wouldn't set foot in a plane. Yet tell people COVID remains a leading cause of death and that it is RIGHT NOW approaching the second-highest levels of the entire pandemic, and it's nothing but shrugs.

ProfCharlesHaas,

@augieray @EricCarroll I don't know. The US seems pretty blase with about the same number of traffic fatalities in a year. https://www.nhtsa.gov/press-releases/traffic-crash-death-estimates-2022

Nontheless it is sad. But $$$ talks.

badastro, to random
@badastro@mastodon.social avatar

Sure, in the US today's Thanksgiving, but it's also…

FIBONACCI DAY!

Because it's 11/23. Get it?

If you don't —and even if you do — then do I have an article for you. Thanksgiving and fun math! What more could you want?

https://badastronomy.substack.com/p/a-little-bit-of-thanks-and-a-math

ProfCharlesHaas,

@badastro and in only 35 years, it will be 11/23/58

PieterPeach, to random
@PieterPeach@mastodon.social avatar

I can’t recall the term “Natural infection” being used much, if at all, prior to this pandemic.

image/jpeg

ProfCharlesHaas,

@PieterPeach From google trends

lauren, to random
@lauren@mastodon.laurenweinstein.org avatar

New nomination for the most disgusting commercial currently on television. It's for Idaho Potatoes. Family at dinner.

[pretty much word for word]

Woman: I hope you enjoy the potatoes, I grew them in my backyard garden.

Man (looking alarmed): Is your garden in Idaho?

Woman: No.

Elderly man at table removes full mouth dentures and drops them into potatoes of little girl sitting next to him.

Little girl screams.

--- Yep. Pretty disgusting stuff. ---

ProfCharlesHaas,

@lauren You skipped the part about the take of the pet cat scampering out of the house, which I think is a critical subtext.

jmcrookston, to random
@jmcrookston@mastodon.social avatar

I've said it before and I'll say it again: you can't analyze human behavior as though it makes logical sense and is rational. We're are fundamentally not rational.

That's why you have strikes that are resolved by very little money. Because it's not about the money. It's about emotion and feelings. Lke everything, including even science, law, engineering.

Did you know judges have just a little bit over a coin toss chance of detecting a liar by their demeanor on the stand? Now you do.

ProfCharlesHaas,

@jmcrookston
"An important scientific innovation rarely makes its way by gradually winning over and converting its opponents: it rarely happens that Saul becomes Paul. What does happen is that its opponents gradually die out, and that the growing generation is familiarized with the ideas from the beginning: another instance of the fact that the future lies with the youth.”
— Max Planck, Scientific autobiography, 1950, p. 33, 97

https://en.wikipedia.org/wiki/Planck%27s_principle

aetiology, to random

"Masks don't work"
"Vaccines don't work"
"Distancing doesn't work"

(They do. Just imperfectly).

I've heard so many of these types of comments over the past 3 years, I thought it was time to write a bit about how one big aspect of infection is a numbers game. /1

ProfCharlesHaas,

@aetiology “It’s the dose, stupid”. I seem to need to keep reupping blog posts I did in 2020. https://chaasblog.wordpress.com/2020/05/18/its-the-dose-response-stupid/ #COVID19 #QMRA #riskassessment

andymoose, to random
@andymoose@mastodon.social avatar

I wonder if there were “weirdos” in John Snows time who boiled their drinking water after the discovery of water borne disease and everyone else was all “are you going to drink clean water for the rest of your life?”

ProfCharlesHaas,

@andymoose @EricCarroll On the “other" platform, there is an interesting parody account that I wish would come over here.

petergleick, to random

Did you read about that Florida man who was trying to "run" across the Atlantic in a giant hamster wheel?

The Coast Guard stopped him, certainly saving his life. Check out Hurricane Lee's path.

https://www.usatoday.com/story/news/nation/2023/09/06/florida-man-arrested-in-giant-hamster-wheel/70774726007/

ProfCharlesHaas,

@petergleick And thereby prevented a potential candidate for the #DarwinAward. https://darwinawards.com/darwin/

petergleick, to random

I've taken my Twitter account private and won't be posting there. Sorry to leave my many followers but I'm all in here. Let it rot in the decaying cesspool of Nazi, climate-denying, right-wing xhit it's become.
(Am I bitter? Do I sound bitter? I'm actually quite happy to be here.🍷)

ProfCharlesHaas,

@petergleick I’m with you, Peter. Went private there two weeks ago.

willoremus, to random
@willoremus@mastodon.social avatar

If you've tried ChatGPT, but didn't find it very useful, and then gave up... I can relate!

But also... I have a guide for you.

We spent months talking w/ experts and AI enthusiasts to get their best ideas and strategies for how to use chatbots in your daily life -- and how not to. Then we built this interactive tutorial to walk you through their 11 best tips. Give it a try: https://www.washingtonpost.com/technology/interactive/2023/how-to-talk-ai-chatbot-chatgpt/

ProfCharlesHaas,
eeyam, to novid
@eeyam@med-mastodon.com avatar

“Prolonged exposure in close proximity to someone with #COVID19 puts people at high risk of catching the disease, even if they’ve had both the disease and vaccinations against it, a study1 shows.
The study, reveals that the greater a person’s exposure to #SARSCoV2, the more vulnerable they are to infection, regardless of their vaccination status. This relationship has long been suspected, but the study is one of the first to document it.”
@novid
https://www.nature.com/articles/d41586-023-02715-1

ProfCharlesHaas,

@eeyam @novid @PieterPeach Congratulations on the rediscovery of basic concepts of dose response relationships. As I wrote in my blog back in May 2020!

#doseresponse #QMRA #riskassessment #SARSCoV2

mackayim2022, to random
@mackayim2022@mastodon.social avatar

Meanwhile over on the Xcruciating site...

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ProfCharlesHaas,

@mackayim2022 I've protected my account over there and don't spend much time there either. Using @ivory here has made things very nice to keep up.

lauren, to mastodon
@lauren@mastodon.laurenweinstein.org avatar

Wait until the Generative AI systems start to say things even MORE bizarre than they are already, and it turns out they've been training on #Mastodon posts. Extinction level crazy.

ProfCharlesHaas,

@lauren Or how about when the different AI systems each start to prompt each other to extend their training?

I recall a 1960's #MADMagazine cartoon at the dawn of TV classes, of a TV lecturer “speaking” to a class of a room full of tape recorders. Would love to track that one down again.

ProfCharlesHaas, to random

“Quantitative Microbial Risk Assessment of Contracting COVID-19 Derived from Measured and Simulated Aerosol Particle Transmission in #Aircraft Cabins”
#QMRA #COVID19 #IAQ

https://ehp.niehs.nih.gov/doi/10.1289/EHP11495

erictopol, to random
@erictopol@mstdn.social avatar
ProfCharlesHaas,
ProfCharlesHaas, to Evernote

My long strange journey in Mac notes/knowledge management. User (early 90's) of Arrange (https://tidbits.com/1996/02/05/webarranger-handles-more-than-the-web/) . Then moved to files only. Then CircusPonies came along, which was wonderful for years. After its collapse, went to DevonThink. Wanted a bit more (so I thought) so moved to Evernote. With Evernote becoming iffy, tried out Obsidian, but a bit too fussy for me. So Hello again to DevonThink @devontechnologies

lauren, to twitter
@lauren@mastodon.laurenweinstein.org avatar

Musk's #Twitter is threatening to sue #Meta over Threads. This is going to be like a Japanese monster movie from the 60s.

ProfCharlesHaas,

@lauren Calls to mind a quote attributed to #HenryKissinger.

ProfCharlesHaas, to random

I guess I will start keeping my M*don browser window open with the latest meltdown of the bird. Will reup an intro soon. Meanwhile welcome to colleagues in

caseynewton, to random
@caseynewton@mastodon.social avatar

The obvious next step for Twitter is to announce that if you subscribe to Blue no one will be able to block you

ProfCharlesHaas,

@caseynewton No - that is only for the Ultramarine subscription. Maybe $1000 a month?

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