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Comment: Re:I've been planning this for years. (Score 1) 526

by VanessaE (#49792807) Attached to: How Tesla Batteries Will Force Home Wiring To Go Low Voltage

> The one thing I need to work out - exactly how do we make a Lava Lamp work efficiently on DC power....

You only need a 10-25W bulb for those, so just build a specialized "bulb" that consists of a couple of white LEDs for the light source, and a very small heating element to get the wax moving.

AI

New Chips Could Bring Deep Learning Algorithms To Your Smartphone 40

Posted by samzenpus
from the smarter-smart-phone dept.
catchblue22 writes: At the Embedded Vision Summit, a company called Synopsys, showed off a new image-processor core tailored for deep learning. It is expected to be added to chips that power smartphones, cameras, and cars. Synopsys showed a demo in which the new design recognized speed-limit signs in footage from a car. The company also presented results from using the chip to run a deep-learning network trained to recognize faces. A spokesperson said that it didn't hit the accuracy levels of the best research results, which have been achieved on powerful computers, but it came pretty close. "For applications like video surveillance it performs very well," he said. Being able to use deep learning on mobile chips will be vital to helping robots navigate and interact with the world, he said, and to efforts to develop autonomous cars.

Comment: Re:Grapples? Thats the nice way when a D is Prez? (Score 2) 134

by VanessaE (#49456125) Attached to: U.S. Gov't Grapples With Clash Between Privacy, Security

And you war-obsessed, money-blinded, overly-religious conservatives are saying what, exactly, about the current president? That he's some kind of angel of sunlight? No. You guys are currently calling him the worst president ever, claiming he's gonna make himself dictator (despite the 22nd Amendment to the US Constitution), comparing his administration to ... well let's not Godwin this. Notice I did NOT single out any current or past US political party.

Here's a newsflash: since before this country was founded, the person currently holding the highest office in most any country has been called every nasty name or epithet in [the then current version of] the book by his or her opposition, while that person's supporters of course use "softer" words when criticizing him or her, with variances of course depending on the country.

And yeah, I meant every word of that opening sentence. Why? Because I am a moderate, and would like to think I can see *both* sides of the current political climate, and conservatives today are just as bad as they were 50, 100, 200 years ago. The noises you make are the same, only the reasons and target of that noise have changed.

How's the phrase go? "Reality leans liberal" or something like that? Maybe it does, but only if you compare it to "conservative" as the terms are measured in the US. Compare it to the rest of the civilized world, and reality is (and should be) a lot closer to center/moderate.

Steering this back on topic, that means we keep our privacy, security, strong encryption without ANYONE else holding the keys but us), and so on, and the government goes and dunks its collective heads in the toilet. They don't need our data to make us any safer, and we don't need to BE any "safer" anyway.

Encryption

Generate Memorizable Passphrases That Even the NSA Can't Guess 267

Posted by timothy
from the exercise-for-the-reader dept.
HughPickens.com writes Micah Lee writes at The Intercept that coming up with a good passphrase by just thinking of one is incredibly hard, and if your adversary really is capable of one trillion guesses per second, you'll probably do a bad job of it. It turns out humans are a species of patterns, and they are incapable of doing anything in a truly random fashion. But there is a method for generating passphrases that are both impossible for even the most powerful attackers to guess, yet very possible for humans to memorize. First, grab a copy of the Diceware word list, which contains 7,776 English words — 37 pages for those of you printing at home. You'll notice that next to each word is a five-digit number, with each digit being between 1 and 6. Now grab some six-sided dice (yes, actual real physical dice), and roll them several times, writing down the numbers that you get. You'll need a total of five dice rolls to come up with each word in your passphrase. Using Diceware, you end up with passphrases that look like "cap liz donna demon self", "bang vivo thread duct knob train", and "brig alert rope welsh foss rang orb". If you want a stronger passphrase you can use more words; if a weaker passphrase is ok for your purpose you can use less words. If you choose two words for your passphrase, there are 60,466,176 different potential passphrases. A five-word passphrase would be cracked in just under six months and a six-word passphrase would take 3,505 years, on average, at a trillion guesses a second.

After you've generated your passphrase, the next step is to commit it to memory.You should write your new passphrase down on a piece of paper and carry it with you for as long as you need. Each time you need to type it, try typing it from memory first, but look at the paper if you need to. Assuming you type it a couple times a day, it shouldn't take more than two or three days before you no longer need the paper, at which point you should destroy it. "Simple, random passphrases, in other words, are just as good at protecting the next whistleblowing spy as they are at securing your laptop," concludes Lee. "It's a shame that we live in a world where ordinary citizens need that level of protection, but as long as we do, the Diceware system makes it possible to get CIA-level protection without going through black ops training."

Comment: Re:A smart phone is rarely convenient (Score 1) 248

by VanessaE (#49052129) Attached to: Smart Homes Often Dumb, Never Simple

You're right that a timer's a bad idea for your use-case, so how about something else? This seems simple enough, if a bit simplistic:

You've always got your smartphone with you, or most people do - certainly just about anyone who would have any interest in the "smart home" market, I would think. In any case, put the phone to work in the *right* way: there are apps that use the radio in the phone to triangulate its position to within a few dozen meters based on cell towers and neighboring wifi hotspots. Make another such app, or hook into an existing one, adding a function to calculate line-of-sight distance from your phone to your house's coordinates on the map.

At home, your smart-home controller would have a live, secure connection to a central server of some kind, waiting for commands.

* Triangulate the phone's position once per minute, in a background task.
* At each interval, if the location resolves to within some "close enough to the house" distance, say 5 miles, send an event the main part of the app.
* That event would cause the app to make a secure connection to the aforementioned server, over which it would send a single "power up the climate control, lights, etc" packet. The triangulation event would then be set to, say, 1 hour.
* The app also could listen for an event from the triangulation routine for "leaving home" also, with a threshold that's a bit more distant than the "coming home" value, say 6 miles. The triangulation interval would reset to 1 minute and a "turn everything off" packet would be sent at this point.

Options to immediately send "power up now" and "power down now" packets (setting appropriate polling intervals in either case) could be offered.

Such an app should show a clear indication of its distance calculation and what the last command was that was sent, and if possible, some status info from the house's controller.

Comment: Re:Action movies are boring. (Score 1) 332

Same reason I never understood the "Gold Pressed Latinum" nonsense. Even if you couldn't replicate it, what would you buy with it? Everything is free.

Because not every culture used replicators to the same extent as Federation cultures did. Remember who were the biggest proponents of latinum-based economics? The Ferengi, who were all about gaining wealth by pretty much any means; their entire culture is built around gaining material wealth. A replicator needs feedstock in addition to energy, and those don't necessarily HAVE to be free.

Voila, there's your money-based economy in the face of replicator technology.

Comment: Re:Revelation 9:1 (Score 2) 129

by VanessaE (#48529111) Attached to: How Astronomers Will Take the "Image of the Century": a Black Hole

Except....that a black home has a bottom. There's nothing infinite about them, except in some formulas (i.e. the _mathematical_ singularity at the center). If the black hole is big enough (around 150 billion solar masses), you could even stand more or less comfortably on its surface, normal earth-like gravity, provided the radiation doesn't kill you.

Comment: Re:What PSY is costing YouTube (Score 2) 164

by VanessaE (#48520013) Attached to: Gangnam Style Surpasses YouTube's 32-bit View Counter

If the values are straight storage, well that's an extra 4 bytes per video for the count. Some quick googling turns up a couple of figures that aren't too terribly old, and which don't actually add up to much:

As of 2008, there were around 83M videos on YouTube, so that's 332 MB for storage for the counters, assuming every video's record were updated and the count data is stored uncompressed. I'd guess double that amount for 2014, but I couldn't find a reliable figure.

Currently, about 4 billion videos are watched per day (!), so allowing for four extra digits on the displayed "watched" count, that would add up to 16 GB of added bandwidth, were every one of those videos to significantly exceed the former 32-bit counter.

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