awelkie

8 ms·

31.
by awelkie 6y ago
I have the impression that CS PhD programs are more competitive than they have ever been, by a large margin, at least in the US. My pet theory on this is that US CS PhD students are exposed to globalization in a big way. If you look at figu
32.
by awelkie 7y ago
I'm a PhD drop-out, and I'm reticent to give it another shot. Is it easy to find teaching jobs at the university level without a PhD?
33.
by awelkie 7y ago
Could you be more specific? What about this proposed "ideal" scheme is infeasible (specifically the engineering limitations you mentioned)?
34.
by awelkie 7y ago
If your ISP didn't have that feature, could you just replace the cable modem too? My ISP's router is running EuroDOCSIS 3.0 and I'm wondering if I could replace the router with a modem + router of my own.
35.
by awelkie 7y ago
This seems like it could be useful for UWB communications or a very precise radar. Is it easy to generate an EM impulse with similar bandwidth? I guess the difficulty is to do all signal processing in the optical domain, since it's imp
36.
by awelkie 7y ago
Excellent point. So how does Google solve the problem? Do they just coordinate the heartbeat intervals with the carriers, or do they bypass the Internet altogether and use some cell-network-specific push mechanism? If the latter, is this me
37.
Openwifi: Open-Source IEEE802.11/Wi-Fi Baseband Chip/FPGA Design(github.com)
2 points by awelkie 7y ago|0 comments
38.
by awelkie 7y ago
Great article; very interesting and well written. A bit of a tangent, but something that bothers me is the assumption in economics that the amount of money one is willing to pay for a good is equal to the utility provided by that good. And
39.
by awelkie 7y ago
In fact, the French have separate words for the stimulants in coffee and tea: caféine and théine. And if your goal is to describe the "source of stimulation" then this may be more accurate than using the same word for both coffee
40.
by awelkie 7y ago
LoRa is just a PHY, LoRaWAN is the MAC. And last I checked LoRaWAN used ALOHA, not slotted-ALOHA, which is even worse. But I knew a few years ago they were talking about adding beacons to the MAC to enable slotted-ALOHA, so maybe my knowled
41.
by awelkie 7y ago
The problem is two-fold. First, LoRa is a spread spectrum technology that also has a problem with collisions. Spread spectrum is where the signal bandwidth of your transmission is higher than the information bandwidth, meaning your transmis
42.
by awelkie 7y ago
I think that's what the poster is saying. I believe "Cannabis causes schizophrenia!" should be in quotes.
43.
by awelkie 7y ago
You're right of course. With Mel I know he's very forthright about his career in the NSA, so I figured it would be alright. I just confirmed with him too, just to make sure.
44.
by awelkie 7y ago
If this was before 2015, there's a chance the person giving the talk about inclusivity was my father-in-law; I know in the last few years of his career there he got involved in the push for diversity. He always talked very fondly of hi
45.
by awelkie 7y ago
Furthermore, were cryptocurrencies to become illegal, it would probably be similar to computer viruses; It's fine to play with viruses on your personal computer or in a lab, but it's illegal to use one "in the wild." So
46.
by awelkie 7y ago
>If this legislation passes, any computer scientist, mathematician, programmer who is working with [automated ponzi schemes] can technically be held liable for [creating a ponzi scheme] when they run their program? I don't see the i
47.
by awelkie 7y ago
It's very annoying. Especially since the reason I use gnome-characters is because I'm in the middle of typing something and I need a character that's not easy to type on my keyboard, so it's already a distraction from wh
48.
by awelkie 7y ago
Is that the first time per installation, or the first time per boot? I just tried starting the gnome-characters app, which I have installed via snap and via apt. The snap-installed app boots in around 6 seconds after restarting my machine,
49.
by awelkie 8y ago
You could do something smarter with error correcting codes. Using a rateless code you split your message into an infinite number of chunks, then send these chunks out on your multiple paths, and then once enough chunks have been received yo
50.
Kai-fu Lee: No hope for Europe's artificial intelligence sector(sifted.eu)
6 points by awelkie 8y ago|2 comments
51.
by awelkie 8y ago
Not to get too off topic, but I have a hard time blaming the left for the current political divide in the United States. Saying that someone who pushes leftwards is bad for American politics because they're not closer to the "cent
52.
by awelkie 8y ago
I think it depends on the field. In mathematics I think the expectation is that students need to study for a few years to even understand what the open questions are, and only then can they begin the research. I'm fully aware of what t
53.
by awelkie 8y ago
I think CS PhD programs in particular can be a little strange. I decided to go back to school to pursue a CS PhD after chatting with a retired mathematician about his PhD. He was talking about how he took classes for two years to explore di
54.
by awelkie 8y ago
FreeRTOS is essentially a unikernel. I assume many other RTOSs are as well.
55.
by awelkie 8y ago
Oh yeah, that's an interesting solution. I'm not sure simultaneous authorization and anonymization is impossible. Couldn't you use something like Chaum's e-cash to obtain tokens that guarantee the holder the right to use
56.
by awelkie 8y ago
Calls could be done over IP, and as long as you could anonymously authenticate to the tower then you could be granted a new IP address at each tower via something like DHCP. I imagine roaming and handovers would have to be done on the end-d
57.
by awelkie 8y ago
I don't think it's possible through technological means to avoid being tracked and still use a wireless network. Even if you could anonymously authenticate to the network, if the base stations have a large number of antennas then
58.
by awelkie 8y ago
You may be thinking of this article: https://news.ycombinator.com/item?id=16881946
59.
by awelkie 8y ago
Good point about owning vs leasing. But there's also a lot of room between private spectrum rights and the ISM band free-for-all.
60.
by awelkie 8y ago
Also, in the paper they say they used pulse-width modulation for the backscatter signal instead of just attaching the sensors directly to the antenna like the Great Seal Bug because the dynamic range of the photodiodes is much less than tha

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