HNHacker News
TopNewBestAskShowJobs

euler_angles

683 karma · joined May 8, 2019

Aero engineer turned electrical engineer turned rocket scientist turned data scientist turned C++ dev turned systems engineer
submissionscomments
euler_angles··on How Virginia Won Amazon's HQ2
Not hypothetical. A dear friend of mine lives next to a Metro station and just recently complained that jackhammering was still going on at 11:30 PM for several nights in a row.
euler_angles··on Another Book on Data Science – Learn R and Python in Parallel
> My point behind the keras/ TF comment is that the libraries have front ends in both python and R, so its mix mox/ dealers choice on what you like to work in (since the backends of both are identical).

Not as a point of argument, just additional information: R's support for keras and TF is a wrapper around the Python interface to those libraries.

euler_angles··on Another Book on Data Science – Learn R and Python in Parallel
> because data.frame is built in, people have been building their own versions (tibble, data.table) instead of improving it.

To make what I think your point is more explicit, people build their own things in R because R must maintain compatibility with S. So by and large, changes happen in packages and not the base language. This does lead to a proliferation of solutions for the same kinds of problems.

euler_angles··on Another Book on Data Science – Learn R and Python in Parallel
What are the good intermediate level data science books?
euler_angles··on Hackers Can Take over Your Car’s GPS
The headline really is "Hackers Can Take Over Your GPS".

Unless your GPS receiver is hosting its own model of what the GPS constellation SHOULD be based on your location and the current time, and can beamsteer its antenna elements to null out the spoofing, you're wide open to having someone just spoof GPS with a low power transmitter. This is old, old, old news.

euler_angles··on Lockheed has an opening for engineers with VAX experience for the F22
Accesses to special programs.
euler_angles··on Lockheed has an opening for engineers with VAX experience for the F22
No, I'm not.
euler_angles··on The worst morale-boosting gesture I've experienced
I couldn't understand what he meant at all, that's why I asked.
euler_angles··on The worst morale-boosting gesture I've experienced
Ah, gotcha. That's pretty cool.
euler_angles··on Lockheed has an opening for engineers with VAX experience for the F22
The biggest noncompliant areas I know of are...difficult to even talk about.
euler_angles··on The worst morale-boosting gesture I've experienced
So you ask people to work overtime at a discount to their normal rate?
euler_angles··on The worst morale-boosting gesture I've experienced
One of my past employers gave us a "big Christmas bonus". It was a Twix Bar with a pen tied to the bar with a piece of holiday ribbon.

The pen didn't work.

euler_angles··on Lockheed has an opening for engineers with VAX experience for the F22
The technologies may have a shorter iteration time, but can the defense establishment adapt? I am skeptical but hope you are correct.
euler_angles··on Lockheed has an opening for engineers with VAX experience for the F22
The problem is of incompatible time scales. The original studies and requirements for the F-22 were done in the 1980s, Lockheed selected to build the F-22 in the 90s, F-22 entered flight test in 1997, IOC declared in 2005, expected to be in service until the 2040s at least. And in that time the world went from the original IBM PC to iPads and graphics cards that do real time ray-tracing.

And re-doing all the avionics would be a probably decade-plus effort costing billions of dollars. Cheaper to hire some old VAX guys as consultants, pay them exorbitant rates, and have them train up a new generation of VAX people.

euler_angles··on Lockheed has an opening for engineers with VAX experience for the F22
> Obviously that only goes so far, but generally there is less tribal knowledge within a DOD program than in most commercial engineering efforts.

Within a well run DoD program. Most of the larger programs are not well run, in my personal experience. And DoD did this silly thing where it let contractors keep the rights to their engineering data until relatively recently, meaning that US taxpayer dollars are funding the purchase of hardware the government by definition can't understand, because the government isn't allowed to know about or look at much of the engineering data. So there's a HUGE amount of tribal knowledge in some of these programs because there's nothing else to reference.

euler_angles··on Lockheed has an opening for engineers with VAX experience for the F22
The program knows it's being wasteful. It is just limited in what it can do about it. Mainly because the same kinds of thinking used to get the program into this mess are what's being tried to get the program out of this mess. Einstein had the definitive quote on how well that works.

"We can't solve problems by using the same kind of thinking we used when we created them."

euler_angles··on Lockheed has an opening for engineers with VAX experience for the F22
Not fired, that would indicate termination for cause. This was an early buyout. Engineers at those levels were offered a severance package that included some number of weeks of pay per years spent with the company (up to a maximum of 6 months of pay) and a base amount on top of that.

This was the precursor to layoffs -- LM hoped to avoid layoffs by offering buyouts to these engineers. The wisdom of all of this... I don't see it.

Their goal was to reduce total amount spent on salaries.

This came at the time that the F-35 flight test program began its long wind-down. Other companies were hiring in large numbers because they had just begun big test programs (NGC had just won the B-21 contract and was testing its Triton UAVs), the net effect was that a HUGE amount of engineering knowledge and talent went out the door within a year. I can only speak for what it did to the F-35 test forces -- basically made them start over in terms of learning how to execute their jobs.

euler_angles··on Lockheed has an opening for engineers with VAX experience for the F22
In one of my past jobs I was a Level 3 Electronics Engineer for LM, and I made right at the middle of the pay band. It paid okay, but lower than someone doing my same job at the same place but working for Northrop Grumman made. I saw many people jump from LM to NGC just to get a big pay bump while doing the same work.

But LM is actively trying to reduce its number of Level 5, 6, and 7 engineers (the highest paybands on the technical career track). You would typically find a Level 5 engineer serving as an engineering technical team lead, a Level 6 as a site deputy chief engineer, and a Level 7 as a site chief engineer. A few years ago, LM Aeronautics offered all Level 5 and above engineers an early buyout/retirement and got over 1000 engineers to leave the company that way. Those engineers were largely not replaced, either in skills (hard to replace that level of expertise), billets (those jobs were not re-filled), or promotions (the sudden vacuum at the top end of the technical career pyramid was not filled by promoting large numbers of level 4 engineers to level 5, etc).

euler_angles··on Lockheed has an opening for engineers with VAX experience for the F22
As someone who has read all of 6016, doing so cost me a good chunk of my sanity.

Never mind the fact that many areas of the standard don't matter because the manufacturers of equipment that use those areas made up their own way of doing things that isn't 6016 compliant. So you can comply to the standard, or you can actually work with platforms in the real world, but you can't do both.

euler_angles··on Lockheed has an opening for engineers with VAX experience for the F22
The 1553 bus is ancient, but it's electrically and logically simple. The concepts necessary to use and incorporate 1553 into designs is easily acquired by a fresh engineer (I should know, I first used 1553 in a design as a 24 year old straight out of grad school) and it's already incorporated into all kinds of avionics and weapons. Why not use it?
euler_angles··on The realities of 'owning' a Japanese convenience store
So I've been lurking on HN for over a decade...the moderators here are very very good at fostering good discussion while eliminating toxicity.

If you want to be a better moderator of any internet community you'd do well to study how it's done here.

euler_angles··on Estimating Number of Jupyter Notebooks on Github
Please allow me to thank you for designing an experience that hits the sweet spot between maintaining a good history of work through git while allowing for interactivity and ease of exploration. I started using VS Code on seeing a video of the jupyter support within the latest release of the Python extension. This has eased and sped up my work tremendously!
← PreviousPage 5 of 5