dmwood

5 ms·

1.
by dmwood 9d ago
In my dotage I have become interested in radiation epidemiology and, of course, the issue of 'statistical power' comes up repeatedly. As noted, most physicists know only as much statistics as is absolutely necessary for their work
2.
by dmwood 21d ago
C'mon, man. The use of the 'attributable fraction' (AF) in legal cases about toxin exposure is well established, if not uniformly legally applied. Careful epidemiology routinely produces the `excess relative risk' of an
3.
by dmwood 1mo ago
Crashes on launch macOS: macos-26_arm version installs (with intervention to permit running), but crashes on launch. ------------------------------------- Translated Report (Full Report Below) ------------------------------------- Process:
4.
by dmwood 2mo ago
Question from a naive macports user. To some extent brew is orthogonal to macports. Is there an easy way to link to ffmpeg installed by macports? Thanks.
5.
by dmwood 2mo ago
Not an average software engineer--beautiful page (imperfect spelling)! Why does detection scale as the 4th root of the RCS? Nice problem for the radiation theory part of a graduate electrodynamics class.
6.
by dmwood 2mo ago
This was the Revell 'Visible V8', first released in 1958. https://macsmotorcitygarage.com/revisiting-the-visible-v8/
7.
by dmwood 4mo ago
Yippy! I feel like I'm 15 years younger
8.
by dmwood 6mo ago
This appears to be prodigiously powerful, but has a --dry-run option and support for whitelists. I love the fact that it's a lightweight and verbose script.
9.
by dmwood 8mo ago
Just a few slots down in my YC feed: the benefits of bright light https://www.nature.com/articles/s44271-025-00373-9
10.
by dmwood 8mo ago
Thank you for your website.
11.
by dmwood 9mo ago
A trip to Wanamakers at Christmas (including eating in the top-floor restaurant and listening to scheduled organ concerts) was a treasured fixture of my childhood in the late 50s and early 60s. If I remember correctly, there was a monorail-
12.
by dmwood 1y ago
Depending on the field, 3 Gy IS 'small' (with respect to doses to tissue during cancer treatment, which can be 60 Gy). Whole body doses of 1 milliGy in the environmental biz are considered worth examination. Even investigations o
13.
by dmwood 1y ago
Probably from one of the crazies in Dr. Strangelove (the movie)
14.
by dmwood 1y ago
Phenomenal. Just wish I knew if this was under a CC license.
15.
by dmwood 1y ago
I like this very much. BUT: What I cannot save I do not remember (quoth the Old Guy). Any way to save these images as SVG. (Screen grabs are less satisfactory.)
16.
by dmwood 1y ago
Shell dependencies for install? Got: bash-3.2# just package && mv dist/infat* /usr/local/bin/infat # Wildcard because output name includes platform bash: just: command not found
17.
by dmwood 2y ago
I welcome the new library! I have used a RadiaCode 103g for more than a month. I also have a more conventional NaI:Tl 5cmX5cm scintillator+PMT in my basement with 95 lbs of lead shielding (as lead shot). I'm painfully familiar with d
18.
by dmwood 2y ago
As noted, ordinary maps may suffer (for example, in epidemiology)from the impact of a very non-uniform population density. A disease cluster then MAY be a cluster, or it may be ordinary disease rates in a highly populated area. In my limit
19.
by dmwood 2y ago
I've used XRG (free) from gaucho.software through many changes of hardware CPU numbers and macOS versions. Light and fluffy, for me at least.
20.
by dmwood 2y ago
As Frank Siegert used to say (maybe still does): "Vi is the answer. Now what is the question?".
21.
by dmwood 2y ago
"Updated fraction of cancer attributable to lifestyle and environmental factors in Denmark in 2018", Scientific Reports | (2022) 12:549 https://doi.org/10.1038/s41598-021-04564-2 attempts to tease out causes:
22.
by dmwood 2y ago
Another data point, this time from a retired university faculty dude. I have recurring dreams of having to give a lecture (typically at a graduate physics level, which is what I taught most) but have not prepared. Worse--I'm not sure
23.
by dmwood 3y ago
Amen. For those interested, google 'percolation theory in two dimensions' to see general results.
24.
Guidelines in Describing Misinfo Spokesmen
1 points by dmwood 3y ago|0 comments
25.
by dmwood 3y ago
The INWORKS study and reports are among the best there are. What's new about this report is that error bars for low doses are much smaller, presumably due to more stringent dose quality requirements and better dosimeters, which became
26.
by dmwood 3y ago
No. The 'faceting' of a crystal is determined by a minimization of the 'Gibbs free energy' [a thermo quantity determined mostly by the relative energies of different faces of the crystal, at low temp] over all the faces.
27.
by dmwood 3y ago
Funny how often the word recollect has come up here, without mentioning the fantastic tool recoll, updated frequently and available for many operating systems. I use it on macOS for an immense library of scientific and other documents. I t
28.
by dmwood 4y ago
I'm surprised that ultrasonic transducers cannot be used to search for cracks or developing imperfections. Can one launch surface-localized waves at one place, pick them up relatively far away on the surface?
29.
by dmwood 4y ago
As a child visiting Luxor (back before mass tourism) we were able to climb fairly conventional staircases to the top of a temple near (or at) Karnak. So ordinary staircases in ancient Egypt probably predate the Romans by 1000 years or more
30.
by dmwood 4y ago
Yes. Thanks. The link below has the most up to date comprehensive diagram of typical doses. For the uninitiated: the 'relative biological effectiveness' of photons (X rays, gamma rays) is typically taken to be one; by contrast,

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