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Comment: Re:Why - why $1 billion a year? (Score 1) 57

by mpe (#47441855) Attached to: FCC Approves Subsidy Plan to Upgrade School and Library Networks
Seriously - why? There are less than 100,000 K-12 schools in the US, we're talking about $10,000 PER SCHOOL in the US, each year.

Probably considerably less than that once you account for all the costs associated with awarding contracts. Including "bidding" and multi layer sub contracting. Even if the whole thing is free from any kind of bribary.

I just upgraded my office (12 Ubiquiti access points, covering 45,000 square feet - probably about the average size of a school campus)

Area is rather less meaningful than number/density of clients. Also schools typically have what is effectivly a whole site shift change every hour or so. Schools tend to "punch above their weight" in comparison to businesses when it comes to things like network bandwidth requirements.
Even though Unify is cost effective both in terms of the prices of access points and not requiring a separate management system if it's not on some "approved list" a school may not be able to buy it with this money anyway. Also in a school environment you'd most likely be looking at at least one access point per room for decent coverage.

Comment: Re:Rural Washington needs internet access. (Score 1) 57

by mpe (#47441767) Attached to: FCC Approves Subsidy Plan to Upgrade School and Library Networks
Are you sure that your area doesn't have access to this: http://www.wa-k20.net/
Most schools, libraries, and public institutions in Washington state use the Washington K-20 educational network. Districts and towns can opt out of the program if they want. If your area is not using it for the library or the schools you should start asking them why.


A quick look at the website showed quite a bit of "corporate speak". Maybe a poll of school network admins would paint a different picture.

Comment: Re:Why - why $1 billion a year? (Score 1) 57

by mpe (#47441753) Attached to: FCC Approves Subsidy Plan to Upgrade School and Library Networks
I work as an admin for a very LARGE business and do this professionally and I've never seen the cluster-fsck that 2 dozen high school kids can make of a network in 10 minutes without even really trying. Hardware and software companies need to get these kids to be beta testers.

It would be a mistake to assume that the most destructive users in a school environment are the students though.

Comment: Re:Ted Postol very bias opinion. (Score 2) 228

by Rei (#47440615) Attached to: A Skeptical View of Israel's Iron Dome Rocket Defense System

Actually, the key thing for them is "cheap". They need to keep costing sub-$1k missiles in the ballpark of these Iron dome systems - the more, the better. They might as well just omit the warheads to save money and increase range. Every $50k shot Israel fires with those systems costs 25 Israelis' annual tax contribution to the IDF. Every $55m system they deploy costs 27.500 Israelis' IDF tax contributions.

Palestinians are poor, but they're not *that* poor that they can't leverage those kind of lopsided financial ratios.

Comment: Re:Subject bait (Score 2) 228

by Rei (#47440537) Attached to: A Skeptical View of Israel's Iron Dome Rocket Defense System

No, in the case of Iron Dome, that's only PR too. They're shooting $50k+ missiles at $800 rockets. Even after factoring in that Israel's per-capita GDP is 20 times that of Palestine's, that's still a losing proposition, even *if* they had a 100% hit rate (which this article is suggesting it's anything-but) and assuming that you get the launcher, radar, etc for free instead of the actual $55 million per unit. It's in Palestine's best interests that Israel deploy as many of them as possible and try to shoot down every last rocket, because every shekel they spend on Iron Domes and missiles is a shekel they don't spend on jets, tanks, and bombs.

Comment: Re:I've always thought that the best way for Israe (Score 1) 228

by mpe (#47439951) Attached to: A Skeptical View of Israel's Iron Dome Rocket Defense System
Goliath is stomping ten Davids every time one David throws a rock, and a hundred if it's a credible throw (e.g. a rocket).

It seem more that they will blame "David" every time a rock gets thrown. Some of these rockets are being fired from Lebanon yet Hamas, rather than Hezbollah, being blamed. Co-operation between Shia and Sunni not being likely either. Those launcing the rockets are also being refered to as "Hamas supporters". Rather implying "With friends like these who needs enemies".

Comment: Re:why he thinks that (Score 1) 228

by mpe (#47439847) Attached to: A Skeptical View of Israel's Iron Dome Rocket Defense System
After reading the article, his reasoning is that the Iron Dome is mostly chasing the rockets from behind, and therefore cannot be effective, because a rocket cannot effectively be caught from behind, or from the side.

Without knowing the actual flight characteristics of both the rockets and the missiles you can't really say if "tail chasing" is a viable interception approach or not.

Furthermore, previous anti-missile systems (the patriot) have had their success rate exaggerated.

It's likely to be harder hit an unstable missile than one which stable. IIRC this was one of the issues with Scuds. Ironically "proper" rockets might be easier to intercept than something scratch built from whatever materials might be to hand.

Comment: Re:I've been calling for this for 20+ years... (Score 1) 132

by MillionthMonkey (#47439433) Attached to: Biohackers Are Engineering Yeast To Make THC

If we ever learn to design new genes and proteins quickly, there are a bunch of starter projects:

Give mold the ability to synthesize CBD and THC. It would motivate you to wash your dishes- so you can use a razor blade to scrape off a gooey film of cannabinoids from the slimy ceramic in your sink, puff away, develop the munchies again, refill the sink with dirty dishes, and complete the cycle.

Insert a couple genes into E Coli that can synthesize cannabinoids in your intestines, so you can get a buzz after eating regular brownies.

Give cows a few genes for synthesis of cannabinoids during lactation. THC milk would also go great with regular brownies.

Design a virus that invades the human nervous system and inserts genes into white matter cells to induce synthesis of Adderall.

Engineer mosquitos that have the ability to synthesize heroin.

Make puncturevines that synthesize injectable human vaccines for measles, mumps, pertussis, polio, flu, rubella. and accumulate them in those tack-shaped goathead seeds. Plant them near people who think vaccines cause autism. Also include genes for synthesizing tire sealant, so their needles stop blowing out my bike tires when they reach the curb.

Give chili peppers the ability to synthesize and retain methamphetamine. Pulverize them and you can get meth with that "Chili P signature" like Jesse was selling in the first episode of Breaking Bad.

Create bees that can successfully avoid any areas tainted with anything manufactured by Bayer.

Resurrect DNA from extinct giant bird Palagornis sandersi but modify the legs a little so that the birds can hold bombs and chemical weapons.

Design trees that grow both apples and oranges, so we can finally compare them.

Comment: Printed THC (Score 1) 132

by MillionthMonkey (#47438371) Attached to: Biohackers Are Engineering Yeast To Make THC

They are genetically engineering stuff to produce stuff that is already available? Benefit would be....?

I'm not going to bother with genetic engineering. I'm going to get a 3D printer, download THC.sdl and CBD.sdl, and print my own cannabinoids.

Which reminds me I also have to print a new bong because this one is starting to smell like yeast.

Comment: That said... (Score 4, Informative) 57

by Rei (#47437451) Attached to: Sand-Based Anode Triples Lithium-Ion Battery Performance

... the greater your capacity, the less cycle life matters. If you want an EV that battery that will run a 250Wh/mi vehicle for an average 20 miles a day for 15 years, then you want it to cycle through about 30MWh. If you use a 100 mile (25kWh) battery pack, then that's 1100 cycles. If you use a 200 mile (50kWh) battery pack, then that's 550 cycles. If you use a 400 mile (100kWh) battery pack, then that's a mere 275 cycles. Actually, the improvement is even better than that in the real world, because the greater your capacity vs. how far you're actually driving, the more you can cycle the cells through a less destructive state of charge range rather than doing deep discharges.

A lot of people picture battery packs in EVs backwards, they think that things like hybrids stress the packs the least, PHEVs moderately, and EVs the worst. But it's reversed. If you look at how big hybrid packs are vs. how much electric range they hold, you'll see that they're disproportionately large, even after you factor in any differences in Wh/kg. The reason is that because hybrid packs get cycled so much, they have to keep the cycling in a very narrow state of charge range, only allowing shallow discharges. So if you only have a narrow discharge range, you have to make your pack bigger to make up for it. EVs can discharge through much more of their pack because they need fewer total cycles and only rarely go down toward the lower end of their allowable discharge range. Some EVs also let you limit the max that your pack charges up to to further extend lifespan (it's usually destructive both to use the very top end and the bottom end of the discharge range).

"The geeks shall inherit the earth." -- Karl Lehenbauer

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