todd8

40 ms·

301.
by todd8 5y ago
As I recall from my class work in a hydrospace vehicles course I took decades ago, submarines have the interesting property of being more efficient that surface vehicle because they leave no wake. A wake is a set of propagating waves that r
302.
Current Milliseconds(currentmillis.com)
1 points by todd8 5y ago|0 comments
303.
by todd8 5y ago
No, it doesn't matter which direction the cities are from each other. The calculations assume that the earth is spherical so the calculations work because a great circle will pass between the cities even if they lie at the same latitud
304.
by todd8 5y ago
Aren't college admissions policies in the US a widespread, institutional example of "equality of outcomes" thinking?
305.
by todd8 5y ago
I’m curious about PA firewalls. The product descriptions claim “Machine Learning” based routing/firewalls. What does that even mean? I’m a bit skeptical about AI being used in a firewall. Can someone help me understand why I should co
306.
by todd8 5y ago
The recommendations seem close to those made by advocates of the Paleo diet. Lots of cookbooks for which are available. I personally have been experimenting with one (medium large) meal per day partly because it seems consistent with how hu
307.
by todd8 5y ago
The concluding slide from this report: > The Ada language is one of the factors which has helped to build, maintain and enhance the CFMU mission critical sophisticated applications.
308.
by todd8 5y ago
Their birthmarks and finger prints are different (out of curiosity I verified this myself with twins that were students of mine) and I believe that their iris scans are different. So a combination of DNA and fingerprints/iris scans sho
309.
by todd8 5y ago
> It's practically impossible to forge those,... Forging isn't necessary, just copying one that is inappropriate in a particular setting. Forgery isn't difficult either if the QR code isn't signed. QR codes are standa
310.
by todd8 5y ago
In what ways if I may ask?
311.
by todd8 5y ago
I was a juror on a DUI trial. It was surprising how the large majority of the jury was confused by the law and the slightly technical evidence; only after discussion during deliberation did the jurors start to gravitate around a reasonable
312.
by todd8 5y ago
I had one famous professor, Gian-Carlo Rota, whose office was covered in stacks of books and journals; I believe that he was an editor of an AMS publication at the time. The next year I had a professor for a class in non-commutative ring t
313.
by todd8 5y ago
Nice pictures of cliffside irrigation sluiceways, but I was expecting to see an irrigation system that defies gravity by lifting water using a surprising method, perhaps a hydraulic ram based system. Hydraulic rams are solely water powere
314.
by todd8 5y ago
My first degree was in math. I've frequently discovered that I don't understand the notation in math papers. What does the paper mean by the harpoon (↼ arrow with half its arrowhead) and how is it different than the waved arrow (⬿
315.
by todd8 5y ago
> Math used to be taught with more drill style. This comment has engendered a lot of responses. Some arguing a position on personal experience and others arguing the supposed science of learning. A different and perhaps useful way to loo
316.
by todd8 5y ago
I believe that it was a two semester sequence that covered gate level logic, microcontrollers and assembly language, and a hardware lab with oscilloscopes etc. I would have picked slightly different classes than the ones she ended up taking
317.
by todd8 5y ago
My daughter finished her CS degree about a year ago. I was glad to see that one required class had her build a very simple computer from gates as her final project. I don’t know the details, but I think the computer had perhaps 10 different
318.
by todd8 5y ago
John Backus won the Turing award in 1977 and gave a Turing Award Lecture with the same title. I was in the audience and it made a big impression on me. I had just finished my Masters degree in computer science and had decided to work for a
319.
by todd8 5y ago
A bit off topic: Over many years of college and grad school, the one course that gave me the solutions to too many problems I didn't have was my first class on differential equations. I think one of my favorite professors, Gian-Carlo R
320.
Lessons I Wish I Had Learned Before I Started Teaching Differential Equations [pdf](web.williams.edu)
3 points by todd8 5y ago|0 comments
321.
by todd8 5y ago
> Fine until my sister greeted me with “happy birthday”, though I did at least notice and stop myself after one syllable. When I'm not able to stop myself I have been forced to say, "happy birthday ... to me". Others must
322.
by todd8 5y ago
I started using Emacs before SHIFT-LOCK was always found on the home row next to the 'A' key. The TI 990 minicomputer terminals had CTRL next to the A key, but the popular Dec vt100 and vt220 terminals put the SHIFT-LOCK next to t
323.
by todd8 5y ago
See also the game of Hex. I was introduced to it by Martin Gardner's 1957 column in Scientific American[1]. As far as I know, these columns are not available free online from Scientific American. However, there is an excellent descript
324.
by todd8 5y ago
Banning autonomous weapons is a good idea, but history indicates that the bad guys might very well continue to develop them while claiming that they are not. For example, see the biological weapons program pursued by the former Soviet Union
325.
by todd8 5y ago
It's Emacs, so configuring it to use ripgrep instead of native is grep is possible in a few lines of Emacs lisp in your configuration file. See https://stegosaurusdormant.com/emacs-ripgrep/
326.
by todd8 5y ago
My example was a simple one, and you are right, Javascript objects contain a reference to their prototype object from which they are cloned and via which they can inherit behavior. However, this is handled a bit differently in Self and in
327.
Atreus Keyboard Available from Keyboard.io(shop.keyboard.io)
2 points by todd8 5y ago|0 comments
328.
by todd8 5y ago
Around 30 years ago (five years before advent of Javascript), I built a successful company around a distributed network programming framework that used prototype based objects. Objects in object oriented systems usually share some behavior
329.
by todd8 5y ago
1938 -- Who Goes There? is a science fiction novella by John W. Campbell Jr. In the story, scientists discover 20 Million year old space craft in Antarctica. They accidentally thaw the alien pilot who can kill and take on the personality
330.
by todd8 5y ago
I’ve also noticed that publishers try to sabotage the used book market: 1) make small changes and publish new editions frequently. 2) provide “online” accounts (for answer keys, extra chapters, etc.) that can be signed up for with a key pro

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