tjohns

58 ms·

661.
by tjohns 8y ago
For home use, I'd say start with what you have. You can always upgrade later. Power consumption is the biggest thing. For an always-on home server, you want something that sips as little power as possible. (Some of the Intel Avoton CPU
662.
by tjohns 9y ago
That shouldn't happen under normal circumstances. That's whole idea behind railway signals. Rail segments (blocks) are supposed to be automatically locked off while a train is on that segment of track. No two trains can be on the
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by tjohns 9y ago
Some insurance companies put the expensive drugs into a "specialty" tier, which can be significantly more expensive for the patient. It's the difference between a $10 co-pay for a generic drug, a $25 or $50 co-pay for a non-g
664.
by tjohns 9y ago
My Philips Hue LED bulbs have been very reliable. On the other hand, some cheap no-name chinese LED lamps I got off Amazon started failing after less than a year. There definitely are some bad, short-life LED bulbs out there -- especially o
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by tjohns 9y ago
I use it frequently both to talk to folks in my party who got seated elsewhere, other friends who are coincidentally on the same flight (common when traveling for conventions/conferences). I also know folks who have arranged large grou
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by tjohns 9y ago
That's IF you all pay extra for in-flight WiFi, and assuming the plane's network link is working. (Many planes' WiFi use a cellular-based network link that has occasional dead spots. Satellite linking is only available on new
667.
by tjohns 9y ago
That's roughly the same price as a mid-tier luxury sedan. Ethics of not-adopting and of cloning aside — not to dismiss either — is this really any worse than paying extra for a nice car? An argument could be made the dog provides a hig
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by tjohns 9y ago
Software Engineers can theoretically become PEs, but it's very recent. Practically speaking, it's difficult right now. NCEES recently created a PE exam for software engineers in 2013, in collaboration with IEEE and IEEE-CS. Howe
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by tjohns 9y ago
Possibly diffraction, possibly JPEG artifacts, possibly camera movement. Tough to say without more details. Looking at it, my suspicion is diffraction. But I don't know enough optics to be sure.
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by tjohns 9y ago
You're not looking directly at the atom itself (which is impossible... atoms are smaller than light's wavelength). You're looking at the photons emitted by an excited atom, as collected over an extremely long exposure by the
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by tjohns 9y ago
Wouldn't the GPS ephemeris/almanac data would still list the satellite as inop, even if it's still transmitting?
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by tjohns 9y ago
And then there's motorcycles, where the direction you'll turn will change depending on how fast you're going. :) At very low speeds, a motorcycle behaves like a bicycle. Turn the handlebar right, go right.* However, once you
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by tjohns 9y ago
Not really. Freight lines are usually built at-grade and occasionally intersect city streets. Caltrain tracks included. Some of the Caltrain stations doesn't even have elevated platforms. It would be... unpopular... to have an electrif
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by tjohns 9y ago
The NEXUS endorsement is for expedited entry into Canada. But without it, Global Entry still works for expedited re-entry back into the US. As for Mexico, you just need to register your vehicle on the GOES/TTP portal to use your Global
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by tjohns 9y ago
I don't quite get the USB port issue... the MBP has 4 of them. They're type-C, but that's the direction all consumer electronics are headed in. All of my daily gear is USB-C now. It's a much more capable port in general.
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by tjohns 9y ago
My understanding is that many modern Amtrak locomotives are equipped with PTC. Either way, the problem was that the track was not yet equipped with the necessary transmitters to communicate with the train (and isn't yet mandated to,
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by tjohns 9y ago
Before Mountain Lion, a personal web server was available under System Preferences > Sharing > Web Sharing. They removed the UI to enable it in Mountain Lion, but the functionality is still built in and can be enabled if you install A
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by tjohns 9y ago
Personally, I've found drinking that much coffee is very likely to give me headaches, and has even given me a couple ocular migraines over the years (not fun). Not to mention making me feel terrible once the caffeine starts to wear off
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by tjohns 9y ago
Still, not everyone is on an OLED screen. Especially on desktops.
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by tjohns 9y ago
Anecdotally, I find pure black + pure white rather uncomfortable to look at for any long period of time. (Pure white especially, but the combination of the two is particularly bad.) It wasn't always that way, maybe something to do with
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by tjohns 9y ago
That doesn't seem like Enterprise OO bloat, just overly verbose naming. They could've called it ProtobufSerializer or ProtobufProvider.
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by tjohns 9y ago
In this case, it makes sense because the author was trying to preserve the line breaks in the original poem, which give cadence to the writing and are integral to the work. Don't blame the commenter. Blame HN for having broken <pre&
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by tjohns 9y ago
That creates a different problem, which is also dangerous. In a large company, you want physical security to know when there's an emergency. They can usually get to the scene much, much quicker, and will need to let emergency services
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by tjohns 9y ago
Not all. Computer-based services like Skype often don't support calling 911, even though they can call other landlines. (They're pretty clear about this when you sign up for an account.) I have an ObiHai box at home that lets me u
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by tjohns 9y ago
I'm not sure the BBB is the best example. You'll find a lot of folks online who don't hold them in very high regard. While they might be a non-profit, that doesn't mean they aren't still looking for money. In partic
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by tjohns 9y ago
It exists. Off the top of my head, Flex SDR radios can be fully network controlled via iOS: http://www.flexradio.com/amateur-products/flex-6000-signatur... There's other options as well. But I'm not sure how
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by tjohns 9y ago
Depends on the seriousness of the call. If you're entering into an actual contract verbally (e.g. applying for insurance or a mortgage over the phone), they'll typically go out of their way to ask if you're okay with the reco
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by tjohns 9y ago
That means you need engineers on call 24/7/365, which raises the cost. One of the nice things about ACH is that it's dirt cheap, especially compared to the credit card network. For example, Stripe charges 0.80% for an ACH tra
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by tjohns 9y ago
For one... Philips Hue. The lights connect to a Zigbee base station, which has a local API for controlling the system. (The base station does connect to a WAN server for remote control, but you could always block that at your firewall. The
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by tjohns 9y ago
Ya, but each channel only showed a limited selection, on their own schedule, with commercials. Compare that with the amount of binge watching that you can do with a $10 Netflix subscription. Things are infinitely better online than what I w

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