lambdaone

9 ms·

301.
by lambdaone 1y ago
I've just realised I've talked my way into the idea of creating per-city club-operated backbone networks based on something like 100 Mbit point-to-point Ethernet-over-microwave links. With tall buildings as hubs, you might actuall
302.
by lambdaone 1y ago
Mesh radio bandwidth is pretty poor. Firstly, you have to compete with many interferers (albeit this might get better if the power goes down), including other LoRa radios, but more to the point, long-distance connections consume bandwidth a
303.
by lambdaone 1y ago
It's substantially harder than linear programming: it's equivalent to SAT, whereas linear programming is merely polynomial-time (and in practice weakly polynomial-time with current algorithms).
304.
by lambdaone 1y ago
HyperCard was undoubtedly the inspiration for Visual Basic, which for quite some time dominated the bespoke UI industry in the same way web frameworks do today.
305.
by lambdaone 1y ago
It allows the Mac to use far less RAM to display overlapping windows, and doesn't require any extra hardware. Individual regions are refreshed independently of the rest of the screen, with occlusion, updates, and clipping managed autom
306.
by lambdaone 1y ago
They don't create contiguous surfaces, and GPUs are optimized to deal with sets of triangles that share vertices (a vertex typically being shared by four to six triangles), rather than not shared at all as with this. "Watertight&q
307.
by lambdaone 1y ago
"Overly strict" only leads to ossification if the designers of the system forget to build extensibility into their system design from the beginning.
308.
by lambdaone 1y ago
Postel's law is absolutely great if you want to make new things and get them going in a hurry, and I think it was one of the major reasons the TCP/IP stack beat the ISO model. But as you say, it's a disaster if you want to bu
309.
by lambdaone 1y ago
Not really, unless you have thousands of routes to manage across large numbers of gateways. Otherwise, running BGP inside your homelab is just a learning tool.
310.
by lambdaone 1y ago
In the "real world", techically competent people understand decibels just fine. But this is not arcane knowledge only known by a priesthood. Since you are clearly confused about what a decibel is and how and why it is used, you ca
311.
by lambdaone 1y ago
It's a bit like hating numbers, and saying "What do you mean by 'three'; what is it - three volts, three amps, three metres? Clearly 'three' is meaningless, and we should stop using it and all the other numbers
312.
by lambdaone 1y ago
Why should floppy disks be a problem? Even if they are fantastically out of date, if they can be maintained as a niche legacy technology, they're not a problem. They won't suddenly stop working, it will just slowly get more and mo
313.
by lambdaone 1y ago
Even though it might seem unlikely, you absolutely can't eliminate the possibility of planes falling out of the air unless you have thoroughly audited and tested all their systems in advance. Not having planes in the air at the exact m
314.
by lambdaone 1y ago
It means 'anywhere between being bricked and no problem at all, and we can't give you any idea of how severe or how likely any of those possiblities are'. The only way you can really know is to thorougly audit your system and
315.
by lambdaone 1y ago
Unironically giving that prime number routine as an example of clever code is not a great look. So bad on so many levels.
316.
by lambdaone 1y ago
Most users don't know what io_uring is, nor would they have read any of thosee articles. They are not HN readers with low-level understanding of operating systems workingm and don't even remotely have the knowledge of how any of t
317.
by lambdaone 1y ago
A side-note: I have a friend who is an electronics genius who managed to construct a production system that combined a multi-kilowatt electric arc lamp and a CCD array. Microvolts of CCD signal at megahertz of bandwidth mixed with hundred
318.
by lambdaone 1y ago
Real environments have both mechanical bouncing and unavoidable EMI spikes, even when you have done your best to eliminate EMI; particularly when you're dealing with switches, which are typically on the end of long wires which are effe
319.
by lambdaone 1y ago
A bit of analog low-pass filtering and electrical hysteresis definitely helps reject EMI - but you shouldn't use these alone to do debouncing as if you do, you introduce substantial latency for both up and down transitions. The (very s
320.
by lambdaone 1y ago
The system is hit so violently that it goes into a non-linear regime, repeatedly hitting the end-stops of its motion. Consider how adding even a small amount of nonlinearity to a simple harmonic oscillator can create chaos, and I think you
321.
by lambdaone 1y ago
Doing it right (via the algorithm above) is a trivial few lines of code. The thinking behind the state machine that gives both high reliability and low latency isn't trivial. It is, however, obvious once you know the trick of maintaini
322.
by lambdaone 1y ago
I do something very similar, but use two time constants. One to determine how many consecutive samples are needed to change from the established state, and a second one, as suggested here, to ignore subsequent input for a bit after a regist
323.
by lambdaone 1y ago
Perhaps a glimpse at the atmosphere of optimism at the time of Musk's pushing of FSD?
324.
Learning a Driving Simulator (2016)(arxiv.org)
1 points by lambdaone 1y ago|1 comments
325.
by lambdaone 1y ago
For large polynomial degree, this seems to me to be very similar to the P-spline method with a very large number of parameters.
326.
by lambdaone 1y ago
Self-experimentation! Excellent.
327.
by lambdaone 1y ago
This is one of the things I was talking about when I said "simplifying". That's exactly their motivation, yes. Resisting it requires political will, or we will continue to let the increasingly irrelevant tail wag the dog. The
328.
by lambdaone 1y ago
Below the Planck distance, "closer" ceases to be a meaningful concept. Similarly, distances larger than the size of the observable universe may also be meaningless.
329.
by lambdaone 1y ago
One thing which has not been mentioned in this discussion is that the wholesale market price of power at any given time is substantially driven by the marginal cost of generation. When renewables (including storage) can't take up the e
330.
by lambdaone 1y ago
My understanding of this is that P-completeness for a problem implies that any problem in P can be transformed into it with a polynomial-time reduction. Deterministic Turing machines (more precisely, the problem of determining the future st

More ›