Viewing profile — dbcurtis

Most systems to that. Empty-cab strategy is a programming option in the controller. If all cabs are idle (very rare) they are typically spread out.

This does happen. I also once worked on a destination-dispatch elevator system installed in a high-end condo building (high-end, as in concierge and parking valet for residents). A…

It's pretty much throughput. The cap-ex of a single cab swamps any other cost, so the only way to reduce total number of cabs is optimizing for throughput.

One other thing to add: It isn't the elevator scheduling software being obtuse, that software gets a huge amount of thought. But elevators are expensive, and building owners do not…

I have done several third-party elevator integrations (software that talks to the elevator controller) for coordinating other equipment with the elevator. One thing that always str…

even more pedantically, would remove 3 and 4 from the stack before pushing 7

If you are in Sili Valley and want to see a Shay, cross the hill to Felton to Roaring Camp for one of their excursion trains.

Almost true. For many plants, a hybrid is naturally unstable, and can often be stabilized with one extra cross. (But isn't, as it serves as intellectual property protection for the…

Well, as an Iowa farm boy (and farm land owner) I have a more nuanced view. There have been hybrid maizes for many decades. It is possible to create unstable hybrids of normal fiel…

My kiddo has perfect pitch, and for them listening to a baroque period organ is kind of trippy because back in those days A was more like 436 Hz than 440. OTOH, absolute pitch mean…

> Alzheimer’s is driven by the buildup of toxic proteins called amyloid-beta. Isn't the current thinking that amyloid-beta buildup is a marker, not a cause? The therapy may be work…

It was part of the culture in the 1960's, and only started to change somewhat during the 1970's. Everybody had ash trays, even in non-smoking households, so that you could bring th…

Do we know if the pilots are OK? Yes, ejection can save your life, but even in a best-case scenario the forces on the human body are incredibly ugly. I know a former combat-rated R…

> Which CAD program? I'm confused Clue here: > Our proposed GenCAD architecture... So, at this point, it seems like this will work with all CAD programs, since they have yet to enc…

No. I got it set for distance vision. There are modern implants that are "multi-focal". But they work by spreading out the light, so everything is less bright at any distance. My t…

It seems to me there is a broad range of "normal", as in well within the standard spec sheet tolerances for humans. It is more about what is average or median.

Who else tried with both eyes? A few years ago I had an implant to treat cataracts. It was notable at the time that the "new" eye was less yellow-tinted than the aged-in-place eye.…

> Rarely(never?) have I found new knowledge on youtube, however its a great source of joy/emotions/slop. I suspect you are not looking very hard. I have learned a tremendous amount…

The burning question is whether or not it qualifies as a new DXCC entity.

? No, you need to educate yourself. The gestation period of a cow is approximately 9 months, similar to humans, by coincidence. Only a cow that has given birth to a calf will produ…

That will vary by person. My father-in-law bred and milked pedigreed Holsteins. They had a 1 gallon pasteurizer and would just dip a gallon out of the bulk tank for household use w…

The thing about LR parsers is that since it is parsing bottom-up, you have no idea what larger syntactic structure is being built, so error recovery is ugly, and giving the user a …

I was just going into the second quarter of compiler design when the dragon book came out. My copy was still literally “hot of the press” — still warm from the ink baking ovens. It…

It seems to me that compared to your phone, a power brick dangling off a charging cable is much more likely to slip off your lap unnoticed and get wedged in the seat hinge only to …

he he... is that the equivalent of when I was a kid we differentiated by "drive-in", "paper-napkin restaurant" and "cloth-napkin restaurant" in order of how much trouble you would …