HN user

stergios

90 karma
Posts0
Comments61
View on HN
No posts found.

It was the “truck and company” that was cleared to cross. That’s probably 5+ vehicles you can see following the lead truck that were all approved. All while the jet was on short final. That controller lost situational awareness due to task saturation as a result of emergency aircraft on taxiway parallel to runway 13.

I worked on a very capable unix based CASE system for Athena Systems in 88 & 89. There's still some articles about it online like here https://www.worldradiohistory.com/Archive-Electronics/80s/88... (complete with screen shots) on page 37. What I recall being the uphill battle was fighting the peace dividend granted by the cold war ending. Defense contractors, our primary market, we’re in cost cutting mode for a decade.

What Is Entropy? 2 years ago

"Entropy is a property of matter that measures the degree of randomization or disorder at the microscopic level", at least when considering the second law.

If you want to get better at mathematical modelling in general I recommend a traditional text book dedicated to modeling, like the 11th edition of "Introduction to Operations Research" by Hillier and Lieberman.

As for the "mathematical equations" referred to by a parent, we're talking linear algebraic equations with perhaps a 2nd order term thrown in for quadratic models. I think these should be within the grasp of someone who wants to delve into the topic, and if not perhaps it's a good place to start dig deeper.

edited to be less of a prick.

In engineering text books, sure they use radians. In mechanical engineering design if you put a radian on a geometrical dimensioning and tolerance sheet it's not going to go well for you.

I suspect the same holds for civil engineering too. I have my doubts that radians are useful in chemical engineering, but I could be wrong there.

Considering the 4th edition of "Expert Systems: Principles and Programming" (The original book on CLIPS) is going for $300 at amazon, you are offering a good alternative.

I worked with Gary Riley and Joe Giarratano at JSC in the mid 80s when CLIPS was in heavy development. Joe had the unique ability to teach very technical topics with a special brand of humor.

Knowing CLIPs got me my first job in Silicon Valley / Los Altos in '88. Thanks Gary!

90% or higher? No way, there’s not a credible large scale survey that makes that claim. Closer to 15-25% suffer from incontinence permanently. And 30-50% will have ED. And 100% of outcomes will loose inches.

50% of RALP patients will have biochemical reoccurrence within 8 years. It takes 15 years of low PSA (<.1ng/ml) to state you are cured.

The goal is to die with PaC, not because of it.

All of these stats are available at PCRI.

I understand and agree. I was Gleason 7: 4+3 intermediate aggressive. Caught it very early, no spread, so RALP was performed 5 months ago. Now I’m deep in the throws of pelvic floor PT hoping to gain some semblance of control again.

Hopefully your surgeon has performed (unlike mine) more than 1000 RALPs - the incontinence outcomes improve greatly when their experience is that high.

Best of luck to you. DM me at gmail if you need/want to talk about your upcoming RALP.

Gleason scores already designate 5 different types/categories of PaC, and this score strongly influences what type of barbaric treatment one will receive.

I hope their findings help discovery of humane immunotherapy’s.

The reason he claimed sensor fusion was not working well was due to vendor versioning. He claimed the same sensor from different manufacturing batches performed differently and thus needed to be re-characterized, which then has follow on effects in various math models. Multiply this by many sensors, and the need for replacement parts inventory for a decade or two and the problem becomes intractable was his claim on his most recent appearance on the LF podcast.

I was lucky enough to have taken two FEA classes from Hughes in the 80s. I worked with his DLEARN [1] code many times back then. He was a great teacher.

I never had the pleasure of taking classes from Juan Carlos Simo, but he was known to have outstanding classes. His was a very brilliant light & life cut too short by cancer at the young age of 42.

[1]. DLEARN is a linear static and dynamic finite element code written in Fortran. https://github.com/fit087/fem_hughes

The front left fork failed. You can see the crack in the video as he is riding. The front fork has a bending moment as well as compressive force. When the bending force was applied the concrete failed and the rebar did not.

Overall, I really liked this as an art project. I'm not sure what the artist wants to communicate with the bike, but I found it very satisfying.

I've used lpsolve [1] for over 20 years in various projects in the beginning. When the project momentum picks up and the finances can be justified, it's CPLEX.

lpsolve is simple to use. Open source, with packages in most every language. Easy to embed.

CPLEX because it's fast. With CPLEX I often find it takes more time (1 - 2 orders of magnitude) to formulate/construct the problem than it does for CPLEX to actually solve it.

I would love to get the chance to use Gurobi.

[1] https://sourceforge.net/projects/lpsolve/