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jonawesomegreen

819 karma · joined August 1, 2014

Computer Engineer. Tinkerer.

Web: http://jonathangreen.ca Email: me[at]jonathangreen[dot]ca

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jonawesomegreen··on The Death and Life of Helicopter Commuting [video]
In order to commute to offshore oil rigs via helicopter you need to do a training course to learn how to escape a helicopter should it need to be ditched in the water. A large reason for this is that if its ditched it will likely invert as they are top heavy, which makes escape disorienting.

This is one certification: https://en.wikipedia.org/wiki/Helicopter_Underwater_Escape_T...

I've always wondered if folks commuting by helicopter like this have to undergo any sort of training. Given the nature of non-redundant systems in a helicopter it seems like having an emergency plan is prudent. I've never been on a helicopter except to go to an offshore platform though.

jonawesomegreen··on Eastern Canada Cellphone Service Disruption
Bell and Telus cells are out all over PEI as far as I can tell.
jonawesomegreen··on Ask a Repair Shop
This frustrates me to no end. I don't mind voting with my wallet and paying for more expensive things if they are better and built to last longer. However it seems a lot of things these days are just more expensive to be fashionable, to sell you a lifestyle full of expensive things that break easily and are not actually built better. I would love to be able to buy more simple, well made things.
jonawesomegreen··on [dead]
Cached version here: http://webcache.googleusercontent.com/search?q=cache:https:/...

Seems like a super spammy page lacking in solid content, not sure how this made the front page here.

jonawesomegreen··on What I Learned About Life by Becoming a Landlord
As someone who had pondered becoming a part time landlord as an investment, this is a really interesting read.
jonawesomegreen··on Airbnb raises $1B at $31B valuation, became profitable in 2016
I had the same thing. Stayed at a really disgustingly dirty place. No toilet paper, no bed sheets, no curtains on the windows. Gave it a bad review and had the host rip me apart about it. "What the fuck did you expect? I would feed you grapes?".
jonawesomegreen··on Use of Ad-Blocking Software Rises by 30% Worldwide
It makes sense. I install ublock on my parents computers, because without ads to send them off course when they are browsing, they are much less likely to get malware. And it works. I've often wondered how they ended up with so much malware on their computer and I'm now convinced that ads are a big cause.
jonawesomegreen··on Classic NES Series Anti-Emulation Measures
Part of me wonders if this is just some experienced game dev working on a boring porting project that decided to have a little fun and see how he could cause issues with emulation, not some large sanctioned measure to defeat emulation software. Might explain why this effort went into such a seemingly unlikely game.
jonawesomegreen··on Supercapacitors Batteries charges in seconds without degrading
Shorting batteries is also never a great idea, but supercaps are more dangerous because of their low internal resistance.

This video is a good demonstration: https://www.youtube.com/watch?v=EoWMF3VkI6U

I was working on a controls project where we had large banks of supercaps that would charge up to ~900v. Have to treat those with some respect. However as long as they are kept cool the caps had no trouble being charged and discharged with a couple minute cycle with each bank providing 2kWh of energy. In the particular application I was working on we actually had 17 2kWh banks providing ~34kWh of energy every couple minutes. Would not fit in a cellphone though :)

jonawesomegreen··on How Does America “Reshore” Skills That Have Disappeared?
I can get behind the philosophy of buying more expensive high quality goods, the only problem is that its very hard to find them. Many brands have decided to sell cheap goods for a large pricetag as status symbols, or have caved to pressure and reduced quality while not lowering prices in an grab for short term profit. Sometimes it takes much less cognitive effort to buy the cheapest thing even if it is of poor quality, at least your not getting ripped off.
jonawesomegreen··on What the IBM Layoffs Look Like
Does anyone have any information on what sort of teams they are moving? The image in the article references Watson, but I would be willing to bet teams working on that sort of research are staying in the US. I would bet its the sort of "maintenance" teams that are moving offshore, as they are seen as cost centers.
jonawesomegreen··on Reproducibility should be at science’s heart. It isn’t, but that may soon change
I think reproducibility is one of the biggest challenges to face science in our time. Luckily we have the tools we need to solve the problem already. Of corse paper journals don't want to waste space and reproducing results, but no such constraints are on online publications. And while moving publications online we can solve the issues of journal publishers owning the copyright on papers written with public money. The big question that's left is trust. A lot of the journals that have gone online are essentially scams publishing whatever you want for a fee. We still need the peer review step the close the gap.
jonawesomegreen··on How Wired Is Going to Handle Ad Blocking
I think its going to be interesting as the anti-adblocker verses anti-anti-adblocker war heats up.
jonawesomegreen··on Why Twitter has run into trouble
I totally agree with the Dad comment here. Both my Mother and Father are hugely into Facebook, but don't understand twitter. They have both signed up for accounts, but haven't really used them, because they don't get it.

To be honest, I also didn't really understand twitter until I had to sign up for it to promote a talk I was giving at a conference. Then after playing around with it a bit, I found some interesting people I ended up following. Before that though I didn't really see the appeal. And this is coming from a tech and news junkie.

jonawesomegreen··on From liquid air to supercapacitors, energy storage is poised for a breakthrough
They are quite large, but in the particular application weight and volume are not a huge concern. All sitting side by side they are about 20 meters long, 3 meters high, and a meter deep. Probably weighs on the order of 15 tonnes.
jonawesomegreen··on From liquid air to supercapacitors, energy storage is poised for a breakthrough
Think of a sinusoidal demand for energy, with a period of a few tens of seconds. By charging when demand is low and discharging when demand is high, peak load is lowered.
jonawesomegreen··on From liquid air to supercapacitors, energy storage is poised for a breakthrough
I've spent the last couple years working on a very interesting project using ultra-capacitors for energy storage. We are storing 33kWh of energy in ultra capacitors, charging and discharging with a very short period (seconds) for peak-demand shaving. It really is an exciting time for energy storage technology. I think we are going to see a lot of cool innovation in the next few years, even just finding new uses for existing technologies.
jonawesomegreen··on Google engineer finds USB Type-C cable that’s so bad it fried his Chromebook
I agree. That is really what I was wondering. Will he be able to see any money from this.
jonawesomegreen··on Google engineer finds USB Type-C cable that’s so bad it fried his Chromebook
Its not a slight fezz-up really though. They reversed positive and negative on the power connections. That is a very basic mistake and one that often at least blows a fuse, if not worse.
jonawesomegreen··on Google engineer finds USB Type-C cable that’s so bad it fried his Chromebook
I wonder if he will be able to recover any of his losses from this company? I know he is reviewing these cables, so hes taking a certain amount of risk, but imagine if someone bought this cable for their new device. I would be pretty pissed if I bought a new device and a new USB cord to charge it and poof out goes the magical smoke and my USB didn't work anymore.
jonawesomegreen··on How long are dams like Hoover Dam engineered to last? (2006)
I remember hearing somewhere, perhaps on a tour of the Hoover Dam that the concrete is very good for the time because although the ideal chemical properties of concrete were not well understood at the time, the local aggregates used were relatively pH neutral which has contributed to the dams longevity. I'm trying to find a source for this though and struggling. Has anyone else heard this about the dam?
jonawesomegreen··on UberHop: More people in fewer cars
They claim to be ride sharing apps so that they are not blatantly breaking laws that protect taxi monopolies. Its a backdoor they have been using to try to open up this industry.
jonawesomegreen··on Text of the Trans-Pacific Partnership
Am I the only one who is constantly surprised that these treaties can be negotiated in secret?
jonawesomegreen··on Tesla autopilot stops a collision [video]
I'm fairly sure you are not supposed to be using Tesla autopilot unless you are on a highway.
jonawesomegreen··on For the future of solar, we’ve got the tech – it’s the economics
The OP's company appears to be: UtilityAPI.com.

Some more info about solar tech companies here: https://powerhouse.solar/companies/

jonawesomegreen··on Schlumberger is building a proprietary OS for its oilfield services
I wonder if this is an operating system, or what a laymen would potentially call an operating system, maybe some sort of full screen application. I would guess the latter.
jonawesomegreen··on Understanding the Historic Divergence Between Productivity and a Worker’s Pay [pdf]
I've never thought about the job market like this before, but it makes a lot of sense, and it is a good argument for the dreaded U word. I've always personally always had ambivalent feelings towards unions, even when I was represented by one as a TA. But the idea that ideas such as this make me wonder if they do actually help balance things more then I had thought in the past.
jonawesomegreen··on How we made GitHub fast (2009)
> full replica of the oval office to play around inside I was sure you were being facetious, but wow. It is actually a real thing.
jonawesomegreen··on The most obsolete infrastructure money could buy – my worst job ever
That is fascinating, thanks for sharing. I had no idea the NYC subway was being run by a 100 year old electro-mechanical system.
jonawesomegreen··on Your Job as a Founder Is to Create Believers
I'd love to hear stores if anyone here worked at Pandora during these times. I find it somewhat hard to believe that 50 people stuck around not getting paid for two years and didn't demand any equity or just walk out.
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