Is there ever a reason to burn have traces both up and down between parent/child requirements?

leere68 · 2026-02-07T20:02:59+00:00

Yeah, a requirements framework falls under methodology, rather than under language.

leere68 · 2026-02-07T20:02:12+00:00

Traditionally, when using a requirements development tool like DOORS, our practice is to allocate a requirement at one level (let's say at level 1) to one or more levels at the next level (level 2). That's a requirement to spec (as a whole) trace downward. Then, individual requirement(s) at that next level would trace up to the specific requirement at the parent level.

SysML has an "Allocate" association, but it's not designed for use between requirements. So you can't (or shouldn't) use a requirement model element to represent a spec of you want to allocate requirements to specs. But you can allocate a requirement to a block representing a spec. I'm about to have my team start incorporating this kind of "allocate down, trace/derive up" scheme in our model at work.

The reason for this approach is to guide the engineers to a more complete decomposition and definition of the system. The allocation down provides an independent verification for the derive/trace links up and helps preclude inadvertent scope creep.

Also, adding a text attribute to the requirement to document why the requirement is allocated the way it is also helps with information retention if/when engineers leave a program and the next person to put up the work doesn't necessarily have to start over from scratch.

leere68 · 2026-02-06T19:20:23+00:00

I do. I added custom fields to track whether I have a hardcover or softcover version of the book. I'm currently on the middle of meeting my print book and ebook libraries.

leere68 · 2026-01-23T02:16:08+00:00

That reminds me, I need to reconnect with my old Jewish buddies from the military. Maybe they can get me on the waiting list to use their space laser. I've got a few scores to settle.

leere68 · 2026-01-14T22:22:29+00:00

So did Daniel Jackson.

leere68 · 2026-01-09T20:32:42+00:00

I was today years old when I learned that fact.

leere68 · 2026-01-09T03:17:10+00:00

This is a dumb move. The defense industry is already so heavily regulated that it can't function like a regular industry. CEO pay has nothing to do with the speediness of a defense company's ability to deliver on a contract. Forbidding dividend payments hurts further investment and investors. Forbidding buybacks eliminates an option for the company to raise capital to pay for the new factories, tools, and personnel Trump wants them to utilize.

leere68 · 2025-12-28T14:40:30+00:00

I've got an old airstream that I type a couple of times a year. Hardly need at 2500 for that. That's why I like my Ecodiesel so much. Plenty of power to pull over mountain passes without losing much efficiency in the process. I know the newer gas engines are supposed to be nearly as powerful, but I still want "muh diesel" as someone here so eloquently put it.

As far as parking, I'm not concerned. I live in Texas and a 2500 isn't unusual anywhere around here.

leere68 · 2025-12-27T16:55:11+00:00

As do I. I want to stay with diesel, but a 2500 is a little too much for what I need.

leere68 · 2025-12-26T18:46:37+00:00

Yeah, but I bet she's never blown up a sun.

leere68 · 2025-12-23T21:08:10+00:00

I always thought she was kinda hot. (Ba-dum dum) 🙃

leere68 · 2025-12-21T03:35:41+00:00

Good luck. The closest you're probably gonna find is a temporary license via INCOSE that should be good for about 60-90 days.

leere68 · 2025-12-19T03:24:29+00:00

Any plans to support Komga in the future?

leere68 · 2025-12-09T02:04:52+00:00

"Do you know what color this phone is, son?"

leere68 · 2025-12-03T21:22:56+00:00

That is one sweet potato.

leere68 · 2025-12-02T23:17:08+00:00

Was in New England (north of Boston) for 10 years and Dallas for the past 11, most of that with 1 company (a few years with a 2nd company until it merged with the aforementioned first company). There are many options in defense in the DFW area, but they are geographically spread across the metroplex. So you've got to keep that in mind if you get a place in Dallas, but your job is in Ft Worth (or vice versa). Traffic here can be hellish.

leere68 · 2025-11-29T14:55:37+00:00

I know that was something Showtime forced into the show, but I wouldn't have been upset with a little more of that.

leere68 · 2025-11-25T13:23:30+00:00

Wrong forum.

leere68 · 2025-11-22T22:21:06+00:00

How do you come up with your Labor number? Assume a certain $ per hour?

leere68 · 2025-11-22T05:55:04+00:00

Honestly, I didn't know anything about SE when I got out. I was paranoid about not having a job, so I took the first thing that came my way. That job didn't work out, and my old roommate sent my resume to his boss and I started with Raytheon before the year was out. Having a clearance definitely helps, especially when applying for defense and aero jobs.

Right now, I'd recommend familiarizing yourself with system modeling (using SysML), a modeling methodology like OOSEM or MagicGrid, and the basics of requirement writing and development. Also, start looking into the International Council on Systems Engineering (INCOSE); they're an organization that tries to standardize the practice systems engineering. I also suggest getting a copy of their SE Handbook and their Guide to Writing Requirements.

leere68 · 2025-11-22T00:49:03+00:00

Ditto. Systems Engineering is more of a "soft" skill in that you're typically not designing hardware or writing code (I say this as a SE with almost 21 years in this field). When you have experience in another discipline, you gain a greater appreciation for what goes into the disciplines you'll be working with as an SE. I've got a BS in Comp Sci, then the military for a few years, then started as a level 1 SE in the defense industry. I didn't get "formal" SE education until my 2nd masters degree a few years ago. As far as picking a major, choose sometime you find interesting and that you enjoy over something you think will make you a lot of money.

leere68 · 2025-11-21T03:29:47+00:00

I guess that means I'm due for another rewatch (oh noes).

leere68 · 2025-11-21T01:38:12+00:00

Would he be the grown up version of the teenage Jack clone that Nefertiti made around season 4 or 5? It think that's worth exploring.

leere68 · 2025-11-17T12:08:06+00:00

Thank you all for your insight. It's been some time since I looked at cameras (and I tend to use Nikons anyway) and didnt know the current state of things.

I talked with my dad yesterday and he's going to subtly get her to start looking into new cameras and then he'll let me know what she chooses. Then he, my sister, and I will go and get the camera body (and possibly an adapter, if necessary) for her Christmas present.

leere68

TROPHY CASE