mikeytown2

On mars awesome, earth you are correct

Thinking about this as a model for the Mars internet and I wonder if there should also be powerful optics's on the satellite for live video streaming and weather. Put a reflex lens on a small sensor and you could get something like a 10,000mm equivalent in a fairly small package. With a lot of satellites you would want a very narrow field of view in order to have a high ground resolution. If you can have a utility satellite that does most of what you need (com & pictures) that seems like a win for mars and earth. Live global video stream sounds pretty awesome.

3 helium tank issues in 3 years

2014 https://en.wikipedia.org/wiki/Falcon_9_Flight_10 (delayed by SpaceX due to a first stage helium leak)

2015 https://en.wikipedia.org/wiki/SpaceX_CRS-7 (failure of a strut which secured a high-pressure helium bottle inside the second stage's liquid oxygen tank)

2016 (a large breach in the cryogenic helium system of the second stage liquid oxygen tank took place)

I believe this is the study you're thinking about http://ajcn.nutrition.org/content/early/2015/07/29/ajcn.115....

"The LC diet, which was high in unsaturated fat and low in saturated fat, achieved greater improvements in the lipid profile, blood glucose stability, and reductions in diabetes medication requirements, suggesting an effective strategy for the optimization of T2D management."

I haven't heard of any formal studies where they got off of medication 100%; I've only heard of n=1 studies (single person reporting) where that has happened. The most remarkable n=1 is this from a type 1 diabetic: https://www.reddit.com/r/keto/comments/2rnn9b/doctors_can_su... but in this case the person is still on it which isn't a surprise as they are type 1.

Video about a guy who took this to the extreme and made a truck sized camera: https://vimeo.com/39578584 (thumbnail is slightly nsfw)

Drupal 8 is a lot different from all previous versions. It still has issues but some of the points you made have been "fixed".

A lot of the pro level camcorders do this. For Sony it's called slog-2 and slog-3. Here's a video showing what it looks like: https://vimeo.com/110595557

If someone could use your public SSH from say Github and send you a private message that would be great. From my understanding that is not possible. You need to generate and exchange PGP keys before, a major UX issue. Allow SSH public keys to be used and we'll be a lot closer to fixing the secure email issue.

Checkout the AdvAgg module [1] it does async font loading. It was used to speedup the frontend of drupal.org and the results are fairly remarkable [2]. Also if you looking for more ways to speed up drupal checkout my DIY Drupal 7 Performance [3] presentation.

[1] https://www.drupal.org/project/advagg/

[2] https://www.drupal.org/node/2493801

[3] https://docs.google.com/presentation/d/1Vaad5ToVU1lc7zWdN3qN...

https://www.youtube.com/watch?v=DnpJibC5iA0 - A video showing the relationship between ants and aphids. The ants protect the aphids on the plant from a number of predators and in return the aphids provide the ants with food in the form of honeydew.

The Sony A7S is another one to checkout due to it's low light performance http://www.premiumbeat.com/blog/10-incredible-low-light-vide...

I'm surprised they didn't mention the keto diet in the WSJ article.

In this paper, we highlight how an excess of dietary carbohydrates, particularly fructose, alongside a relative deficiency in dietary fats and cholesterol, may lead to the development of Alzheimer's disease

http://www.reddit.com/r/ketoscience/comments/32ew4h/nutritio...

There's also the recent UCLA study where 9/10 patients improved after going on a keto diet http://neurosciencenews.com/alzheimers-memory-loss-reversal-...

Thanks for bringing up this important point. Getting blood work done before & after is important when doing a diet change. Rob Rhinehart from soylent fame gets his blood drawn fairly regularly if I remember correctly. The community over on /r/keto is pretty good with helping out, see http://www.reddit.com/r/keto/comments/1j5yi8/help_me_rketo_h.... Due to genetics keto can be a bad idea for certain people.

I strongly recommend Keto. I started Keto 4 months ago and a couple of my coworkers have joined in as well. Not a lot of research has been done, but you can find some interesting information over at http://www.reddit.com/r/ketoscience

Current research being done with the Keto diet: ALS, multiple sclerosis, Alzheimer's, and just about anything else that involves the brain like brain cancer. It's been proven to help type 1 & 2 diabetics, certain types of seizures and it's a great weight loss diet for most people.

Reading this reminds me of the "Mistakes Were Made" This American Life podcast [1]. It's amazing how much we've learned in the last 50 years & how far we have to go in order to get to what we've seen in movies [2]

[1] http://www.thisamericanlife.org/radio-archives/episode/354/m...

[2] http://movies.stackexchange.com/questions/4156/explain-hyper...

I totally agree that benchmarks with different parameters are fairly meaningless. Was just trying to give people a ballpark figure in reply to the question about how to 2 compare with benchmarks; even if they are not equivalent.

One interesting point about this is that the PostgreSQL benchmark tops out at 8 users whereas the MySQL ones start around 8 users and go up from there. Right at the 8 user point, both SQL engines are within the same range, just under 100k QPS on read; with the hardware (# of cores) not changing this value much, as well as the MySQL version 5.5-5.7 not having any effect either. That seems like a limit that these 2 SQL engines (PostgreSQL & MySQL) are hitting; most likely from parsing the SQL. Thus the only way to improve single threaded performance is to use something other than SQL; like the memcache protocol.

Link to the benchmarking tool they used: https://launchpad.net/sysbench. Also a guide on how to use it: http://wiki.mikejung.biz/Benchmarking#sysbench

Some benchmarks put MySQL 5.7 at 645k QPS [1] and if you're using the MySQL memcache plugin [2] then you got well over 1m QPS [3]. Update performance is up to 100k QPS as well [4]. Note that in these benchmarks they are using some expensive hardware (40 core ht).

[1] http://dimitrik.free.fr/blog/archives/2014/09/indeed-mysql-5...

[2] http://dev.mysql.com/doc/refman/5.6/en/innodb-memcached.html

[3] http://dimitrik.free.fr/blog/archives/2013/11/mysql-performa...

[4] http://dimitrik.free.fr/blog/archives/2014/11/mysql-performa...

It seems like the vast majority of the issues with the current generation of products on the market has to do with speed & reliability; thus hardwired is the only way to guarantee those 2 work all the time. Also by going the hardwired route, the sensors and controls will be vendor neutral; thus ensuring that it will be future proof.

After doing a bunch of research the conclusion I came to was Opto-isolated relays [1] are the way to go for lighting control [2]. This allows for simple logic boards to control line voltage things without the risk of the line voltage killing your logic board. Best way to do this style of home automation would be in new construction, as retrofitting it would be hard to do if the house is more than 1 story tall as you need access above and below. Would be labor intensive as well. Will also allow for manual control because you'd put a current sensor on the wire so the hardware can tell when the circuit is on/off.

I would also want to put in some thermal cameras, as motion sensors are not as useful when your sitting on the couch, to tell when you enter/exit a room for auto lighting control. Put temperature sensors in every room and have motorized dampers & air flow sensor allowing for the control of the temperature in every room. Now your lighting and hvac can be manually or automatically controlled. Wire all the sensors and controls to a hardware/software brain that can be upgraded at any time. If that hardware/software brain is disconnected, all the light switches will still work and the normal hvac system will still work; just less efficiently.

Have the thermostat be controllable from the panel when the house is occupied (thermal camera) and auto controllable when vacant.

All of the above is possible right now; it just would cost a lot of money. Every relay/current sensor is $80 bucks; every damper control is $100; every thermal camera is $500; add it all together and you got one very expensive home automation system. But it will work right now without a lot of user frustration.

[1] http://en.wikipedia.org/wiki/Opto-isolator [2] http://diy.stackexchange.com/questions/46601/home-light-auto...

Jet engines weight to output power ratio is why they are used for big planes

Recommending using a Wago [1] or Set-Screw wire nuts [2] for joining wires as these are harder to use improperly than a wire nut. Video on how to use a wire nut [3]; people mess these up all the time. For the mains voltage I recommend using at least solid THHN 14 AWG wire, it's the minimum required wire size for a 15 amp circuit (Most outlets are rated for 15 or 20 amps); color coded as well, white for neutral & black/red for your hot, green for ground. If you're unsure what one is hot, compare the voltage to the ground. A good clean design should not require electrical tape for it to be safe if you take the cover off.

Having a physical barrier between your low and high voltage areas is a must; the low voltage wire used to switch the relay is the only thing that should go inside the high voltage area (drill a small hole just for this wire & keep it away from 120v as much as possible), also mount the plug for your 5 volt source on this internal wall; or better yet use a USB outlet [4] as these are designed to be ran inside an enclosure. Using color coded wire for the low voltage is advised as well.

Since you're dealing with water, making this device GFCI protected would be smart. Have your mains run through this first before anything else [5]. And finally for the relay get one that is UL listed & opto-isolated in order to prevent bad things from potentially happening; the RIBTE01B [6] will most likely fit the bill. Be sure to check the ratings for your relays; putting more power through them than they are designed for might end up with your project in flames. If you're unsure about the power requirements, using a small relay to turn on a big relay [7] is OK.

[1] http://www.amazon.com/Wago-222-413-LEVER-NUTS-Conductor-Conn...

[2] http://www.amazon.com/Wire-Connector-Set-Screw-Black/dp/B000...

[3] https://www.youtube.com/watch?v=32z6Q8--fEM

[4] http://www.amazon.com/Leviton-T5630-W-Tamper-Resistant-Recep...

[5] http://www.homedepot.com/p/Leviton-SmartLockPro-20-Amp-Combo...

[6] http://www.functionaldevices.com/building-automation/display...

[7] http://www.amazon.com/Packard-C240B-Contactor-Pole-Voltage/d...

Edit: If you do end up keeping your solid state relay, ground the heat sink.

2nd Edit: If you want to avoid the need to 3D print the enclosure, using a 4 gang box [8] you could make this work. 1st slot is your input Single-Gang Decor Recessed Power Inlet [9]. 2nd slot is the GFCI [5]. 3rd slot is the USB outlet [4] with a cover [10] for your low voltage side. 4th is the outlet [11] to your heaters. Drill a hole in the box for the relay [6] if it doesn't fit inside as it is threaded and is designed to be externally mounted like this if needed. Mounting some lights [12] is helpful to know if the device has power and the outlets are powered. If you can find a larger gang device [13], you can incorporate an simple switch to turn the whole thing on or off and maybe mount everything inside.

[8] http://www.homedepot.com/p/Carlon-4-Gang-68-cu-in-Electrical...

[9] http://www.amazon.com/Midlite-MDT4642W-Single-Gang-Decor-Rec...

[10] http://www.amazon.com/Safety-Innovations-10408-Twin-Outlet/d...

[11] http://www.homedepot.com/p/Leviton-15-Amp-Duplex-Outlet-Whit...

[12] http://www.homedepot.com/p/Madison-Electric-Products-Smart-B...

[13] http://www.amazon.com/Indicator-Pilot-Signal-Light-Cable/dp/...

If they used an old school film camera would this be an issue?

Seattle's Tunnel Project is cursed https://www.youtube.com/watch?v=xgIeuSlKQ3w (1:19 sketch comedy)

Reminds me of starting a new game of Stars! [1]. You have to plot what systems you wish to visit and manage fuel use to how many light years away that system is. There is a lot of strategy in picking flight plans [2].

[1] http://en.wikipedia.org/wiki/Stars!?

[2] http://web.archive.org/web/20040102151647/http://crisium.com...

The fridge would be my guess

The best naturally aspirated piston engine is 166 hp per liter. The best naturally aspirated Pistonless rotary engine is 188 hp per liter [1]. The Duke is at 71 hp per liter; it has a long ways to go but it's already better than a naturally aspirated Diesel engine (44 hp per liter).

[1] http://en.wikipedia.org/wiki/List_of_automotive_superlatives...

Here's the issue. The article says "In the US, the CDC reports that one in 3,000 children will have febrile seizures after an MMR shot." At least 3 million babies are born every year in the US [1], this equates to at least 1k kids having a visible reaction (seizures) to the shot every year. With numbers like this, there will be some push back as someone will most likely know someone who had an issue with the shot.

[1] http://www.cdc.gov/nchs/fastats/births.htm

A Class T amplifier[1] is the closest you can get to a tube. One of the amplifiers, the TA2020 (1998), was named one of the twenty-five chips that 'shook the world" by the IEEE Spectrum magazine.[2]

[1] http://en.wikipedia.org/wiki/Class_T_amplifier

[2] http://spectrum.ieee.org/semiconductors/processors/25-microc...

The reason I believe that there is a conspiracy is that the technology to get a 10,000 hour incandescent bulb is fairly cheap & easy; you need a temperature compensating thermistor, AKA the Bulb-Miser [1]. I've used one before and they really work. I'm now 100% LED.

[1] http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/2007001...

Homeowner association http://en.wikipedia.org/wiki/Homeowner_association

Something like http://timebanks.org/?