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Comment Copy (Score 1) 121

The internet is basically a copy machine. I realized this writing an IP stack. It might as well be called the interCopy or the big copy. This word may also make it clear for the distributor that if you put your stuff in the interCopy, it will be copied. That is what the interCopy does. If you do not want your stuff copied, just don't put it in the interCopy.

Comment VeriWave in Portland (Score 2) 125

The (not so big) secret is that most WiFi AP rolls over with 8 or so clients. Only a few manufacturers themselves test their products beyond that, and those work all the way to over 100.
The company selling the test equipment you need is called http://veriwave.com./ You can buy the equipment from them and test all the vendors, or even better, just ask them.

They do of course know, since that is how they test their own test equipment. Problem is that they can/will not tell you because then 1. you would not need to buy their product, and 2. AP mfg would fix their products, and Veriwave would not have a market for their products.

Maybe just do some social hacking to get it out of them.

Comment Stack implementation, MIMO and ch. 14 (Score 1) 251

I wrote code for the 802.11b stack, and have gotten a lot of feedback from the test team as well, and here is my 2c:
1. Stacks should handle at least 127 radios on one channel, but most implementations crash with as few as 8 radios alive. Make sure you use a stack that handles many radios. Test your router and your gear (netgear and D-link passed, but check with your current router anyway)
2. Nearby channels appear as noise. If you have many TX on nearby channels, you may not have enough signal/noise ratio. Make sure all gear is MI-MO, and maybe add directed antennas to your router that keep your signal strong in your area.
3. Use channel 14 (you may want to check legality of this in your area) Standard US HW is limited in FW to use ch1-11. Ch 12,13 and 14 is all in virgin territory, and you would be alone at those frequencies, unless of course, you traveled to Spain or Japan or other where you this would look different.

Comment Buzzword generator (Score 1) 33

I have also been working on a buzzworkd generator. I included words: Cloud-based, linux kernel, android, Mobile, platform, global marked. the OPs also included the words: virtual machine, apps, chinese, smartphone. What a powerful buzzword generator!

I am also impressed by the bold juxtaposition of buzzwords in one sentence: Android compatible Cloud-based linux kernel.

I hope nobody here on /. will destroy this beauty with any attempts at understanding what it is, or what it possibly can mean.

Comment Massively defective infrastructure (Score 1) 24

Californias power infrastructure is massively defective, and outages are similar to third world countries. You can not "test" in quality. Money would be better spent building solid reliable infrastructure replacing the existing. Electric power fails more than once a year, and gas lines explode in residential areas. It should be the norm to *never* have electric outages.

Comment Dolphons speak 3D sonar. (Score 4, Interesting) 179

dolphins use sonar to geolocate and find food. The sonar pattern used also depends on whether they are navigating, searching for prey or attacking. When a dolphin "tells" where to go to find fish, it will play back a stylised summary of the sonar imagery from navigating past the steep cliff, to "seeing" the school of 1kg macrel, to the successful attack.

This 3D communication is efficient and fast, and connects directly to the visual part of the brain. Powerful and emotional imagery can be communicated well.

Humans 1D voice communication compared is inefficient, indirect and lack precision and descriptive elements.

"Riding a bow wave" is a 1D sequence of sound that has very little info or precision compared to the sonar echo of actually riding the wave.

Humans should probably try to speak sonar, rather than try to dumb down a dolphin to speak human

Comment In Facebook, the BIG logoff, makes you invisible (Score 2) 520

This will not protect your privacy against government intelligence, but at least against most else. Do the BIG logoff from facebook by disabling you account instead of just logging off. Data is kept, and you can enable the account just by logging back in. A few seconds extra to log out, and your information is not shared.

Comment Really no need for complex speaker design for DIY (Score 1) 275

Having built my own speaker system, I came to realize that the problem with speaker design is to get good sound into a small and shippable product. If you can use your entire house, and many elements, it is trivial to get good sound. For example, many elements covering a wall, each with little effect, is a great subwoofer. After that measure current vs. voltage over the elements to determine element dynamics (Similar to algorithm that controls brushless motors), and feed that back as a correction to the amplifier. Result: perfect reproduction from signal to sound. Adding some sound dampening furniture, carpets, and pictures (print some move posters on canvas with insulation behind) and you are in sound heaven.

Comment 200 h.p engine drives a pump against 7000 psi (Score 1) 2288

There are still imperial leftovers in Europe. Lumber is called 2x4 and 2x6 even though 48mmx97mm and 48mmx146mm is stamped on the wood. Also, plumbing fasteners are called 1/2" or 3/4" with M12 stamped on, and they fit US threads. Houses are built with 600mm stud spacing (2') and most building materials are divisible by 300mm or ~1', like plywood (1200x2400mm)

Anyway, Some mechanics were trying to figure this out a 200 h.p engine drives a hydraulic pump against 7000psi, and to get the flow in gallons/minute.
This is easy with metric values 150kW against 50MPa. What is the flow? Answer:150kW/50MPa=3 liters per second.
I got some anti-metric guys convinced.

Somebody up for the imperial calculation to check my math?

Comment Bandwidth is basically an unlimited resource (Score 1) 81

ISPs need to differentiate their products so they can get more money from those willing to pay. (like a separate line boarding a plane for business). Unlike water and gold, bandwidth is basically an unlimited resource up to a few GBs-1.
A 10GB fiber is cheap, and a fast router is cheap, but your access is throttled down so they can pretend it is a limited resource, and charge you.

Actually, an optical backbone cable has 768 fiber carrying maybe 128 colors of light at 10GBs-1 each color, so 1 cable would give every house in the entire San Jose Bay Area 1 GBs-1. A single carrier router could terminate this cable, and local 10GBs-1 routers are cheap.
Voila, 1GBs-1 for everyone!

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