Enough talk; Here is my 20km
on
Tibet's Mesh
·
· Score: 3, Interesting
I will contribute 20 km to this network. I have a free wifi zone about 2km radius around my house, and two 24db antennas that connects to nearby users upto 10km away.
You can find me in San jose, CA.
Maybe sombody can carry me to google in Mountain View?
Good low cost antennas and accessories: http://hyperlinktech.com/ (Dlink connector is called RP-SMA)
Times Microwave will ship you a free sample of 20' of LMR-400 with connectors (DIY)
Suggestions: 1. Dont use "Cantennas". 2. Yagi is better than parabolic 3. Use spark arrestors when you go outdoor 4. Use 2.4GHz splitters and hook up more antennas to one AP. 5. Use filters when co-locating APs
Applications: Asterisk: Free phones for the neighbourhood VLC media player: Everybody shares their movies
Will not really need that big of a neighbourhood before you dont even need to connect to the net or the phone sevice or TV!
The problem is not believing in evolution or not. The underlaying problem is christianity. I must be obvious to any rational beeing that the whole basis for christianity or any other semitic religion (Judaism and Islam) is ridicolous.
How can it be expected that any person fed this kind of religous dogma has any ability to distinguish sound scientific truth from religous fantasy?
Kids are smart and rational until they are told religious contradictions. When they question them the are told to meditate over it for some years until they realize that the obvious contradictions in terms are actually beautiful harmonies.
The movie and music industy are tiny in economic contribution compared to the hardware industry.
The total income if the whole world were to buy new HDTVs, HD Entertainment systems and players, as well as a buch of HD DVDs is an order of magnitude higher than what hollywood and RIAA stands to loose if you make it all easy and user friendly.
Instead they mess this huge opportunity up with copy protection BS.
I have no problem buying a few hundred HD DVDs for $20 each over a few years *even* if I can get a copy from a neighbour for free. The $20 gives me a nice full color case and DVD, and a nice looking collection.
The only support for the statement that this is the worlds fastest kayak is:
1. The builder goes to MIT 2. The journalist thinks it is fast.
You start to wonder what kind of people goes to MIT. If you, dear/. reader, went to the newspaper to tell them you had built the worlds fastest something, (say car).
Would you not have some data to support your claim? A radar gun readout? A win in some competition? Anything?
"...But if you're looking for an answer to a question, you may or may not find a single document that happens to contain it....
You minsunderstand. what you do is for example a "google closeness search" or a "Google Mindshare", or finding the Normalised Google Distance (NGD) and mapping this.
You will not get any search results, it will more let you, for example, play "20 questions" like a master.
Basically, for example, the NGD quantifies the strength of a relationship between two words. For example, "speakers" and "sound" are more related than "speakers" and "elephant." Instead of creating this manually, of course, they find the Google PageCount when both words are used together in a search. ("Speakers" and "sound" would have a relatively high number of result pages when compared to "speakers" and "elephant.")
Now when you repeat this process of finding the NGD for a lot of words, you can build a multi-connection word map. This automatic meaning extraction can well be the way to make a computer understand things and act semi-intelligently. Apply this to all text produced by for example the U.N., and you will have a front end that can produce good(?) quality UN papers automatically.
I think google has surpassed OpenCyc by orders of magnitude in knowledge. You can do a lot of correlation searches etc. This can be used for language translation, as a dictionary (As seen when you misspell your google search term), and general knowledge.
All that is missing is a good frontend, to translate your questions into a few million searches.
1. DC/DC conversion is cheaper and simpler bacause with a 60Hz AC signal, you have *no* power during the zero crossing. The PS has to store the energy in a capacitor or a coil to deliver during the 120 "outages" a second. A DC/DC converter operates at hundreds of kHz, so components are much smaller, and since the conversion uses square waves, it does not have the "outages" a sine function has on the input.
2. A lot of AC/DC switching power supplies is a constant power load on the grid. It tends to draw more Amps as the Voltage decreases, producing a lot of harmonics in the mains power line, and a worse power factor than regular "resistive" equipment. Therefore the mains must be overdesigned to support this kind of load.
2. 220V AC means 220V *RMS*; 110V is just one of the wires tied to ground. The peak-peak is around 311V. Not that different from 380V
It does not necessarily take much to be a realtime operating system. The only requirement is that the responsetime to an external event has to be reasonable. I am sure that 1/10 of a second is just fine for an underwater vehicle. Windows XP even on a slow processor will finish housekeeping and service an interrupt in a few thousand clock cycles or a few microseconds. (A softmodem is a fine example)
In other words, hard realtime requirements like predictable responstime becomes irrelevant when you have a 2GHz processor. At least for allmost all real world tasks.
Secondly, Embedded only means "No modal messageboxes" should stop excecution. (like "No kbd detected, press F1 to continue")
This is well known except in the marketing departments of real time, embedded OS makers.
I went to some presentations at UC at Berkeley bak in 2000. They had developed and were testing some WDM-on-a-chip, with integrated receivers/transmitters.
I klicked on the link in this article hoping to see what development had occurred over the last 6 years. To my surprise the article has nothing useful in it. Yes, thats right. No info on: -wavelenght, -frequency, (Is this in the 193THz IR band?) -spectral resolution, -insertion loss, -return loss, -linearity, -polarization modes, -passband characteristics (Is it flat for high modulation?) -time response
Maybe it is hard to fill/. with interesting articles, but there is no need to have these dummed-down articles referred to here.
So you install a intercooler on an engine to improve efficiency, and suggest seperately that you drink the water that comes out of the tailpipe.
Avoid specifics as much as possible, and wrap it up on in miltary and engineering terms, and call it technology news.
Also: Frome the article "A few percentage points (improved efficiency) might not seem like much, but it makes a big difference when fuel is scarce or expensive"
Cost of living comparisons assume you spend all your money where you are.
Truth is *you don't*
Example: Assume you work in San jose for $140k. You probably also get $30 in bonuses, and $30k in stock etc if you pick a decent company.
Maybe you have $150k after taxes or $12,500/month.
Now pay for house and food, and you have $6k left to save.
If you find another place where everyting is half of San jose, you may live just as well, and still save almost 50%. You are however only saving $3k (And you will not find such a place. Your car, your TV, your PC and all other stuff cost just the same)
When retirement comes, you will feel the difference. Twice the money will be the difference between retiring in style or just staying put.
You probably can retire early from your job in San Jose as well.
Re:dumber than an arkansas hound dog, these guys
on
Halving Half Lives
·
· Score: 1
Neither the author of this comment nor the moderators have any clue about nuclear physics.
In 1990, we had some brand new HP disks the size of a washing machine. Capacity 650MB.
Some software was written to move the head assembly from end to end. This would cause so much vibration the the whole machine would "walk" around.
The machine room had video cameras, and sometimes if you saw some maintenance people in the machine room, you would launch the "Butterfly test" on all the drives. They would come alive like a bad horror movie, and all walk around. The poor maintenance person would try to run out befor the exit got blocked.
First, the government is going to process the data to get a good profile of you.
Secondly they are going to use it extensively in all interaction with you.
Norway does this today and a lot more. They have a benevolent(?) government, and people live and eat well, so nobody complains much.
Here are some examples of Noway today: 1. The tax office does your full tax return for you since they have all your info anyway. You are sent a copy to confirm that all is correct, and it usually is. 2. Everyone has a personal number assigned at birth. The registry is part of the tax office. To get many benefits like free healthcare, and by law, you must report your address. 3. All public services have full access to your information. This simplifies qualifying for various programs as there is nothing to fill out. 4. Many services are only payable electronically, so a searchable database is easy to build. 5. Tollstations are fully automatic and prolific. Your movements are logged. If you drive through without an electronic tag, a camera snaps, and you are mailed a request for electronic payment. How do the find you? 6. Electronic photoboxes are installed throuout the country to catch speeders. 7. Government controlled free(subsidized) -health care, -education, -childcare makes sure they know everything, as your they are closely involved in all of your familys life. 8. Most norwegians are forced members of a union. The unions political arm, the labour party controls the government as well. The unions often offer benefits such as vacation homes. The government owns the majority of shares in the largest companies. (So i guess the union are on both sides of the table in negotiations) The government also have majority control of other big businesses such as banks.
So your job, your vacation, your representative at the salary negotiation table, your bank, your university, your retirement saving, your doctor, the daycare etc are fully controlled by the government.
..labs where basic research in applied engineering is still done in the US, without the pressure of money and immediate results?"
Expect if you find a job where there is little connection to revenue and performance, the job will vanish due to failure of the company.
As the anonymous reader self says: "..Like bell labs of YESTERYEAR".
I have worked as a R&D project manager for companies with these ivory towers of researches. While I need the algorithm next month, they usually propose to create some two year research project with some unclear goal.
I believe they should deliver or disappear.
You should just embrace the need to deliver, and have a lot of fun doing it.
Her is/.ers chance to put their money where their mouth is. You can: 1. Buy their software here: http://www.digitalpoint.com/products/ 2. Review and recommend their software.
They sell: data wizard, home inspection, isp billing domain management and radius server.
It should not be difficult to drive a few $millions in sales to them.
Consider using this for your own networks:
Name Stalker 1.2 Tool for managing your domains and monitor domains that you want. For Macintosh and Windows
or
Men & Mice Products 3 out of 4 DNS servers are incorrectly setup... find and fix problems with any DNS server. They carry Men & Mice's full line of DNS server and diagnostic tools. For Macintosh and Windows.
They are building a neutron accelerator to test some properties of neutron stars. They are having some problems as the neutron beam is moving around somewhat randomly.
Slashdot Mirror
I will contribute 20 km to this network. I have a free wifi zone about 2km radius around my house, and two 24db antennas that connects to nearby users upto 10km away.
a in.cgi
You can find me in San jose, CA.
Maybe sombody can carry me to google in Mountain View?
What you need and where to get it:
Link analysis for free:
http://www.ecommwireless.com/cgi-local/wireless.m
Single antenna AP: Dlink DWL-2100AP
Good low cost antennas and accessories: http://hyperlinktech.com/
(Dlink connector is called RP-SMA)
Times Microwave will ship you a free sample of 20' of LMR-400 with connectors (DIY)
Suggestions:
1. Dont use "Cantennas".
2. Yagi is better than parabolic
3. Use spark arrestors when you go outdoor
4. Use 2.4GHz splitters and hook up more antennas to one AP.
5. Use filters when co-locating APs
Applications:
Asterisk: Free phones for the neighbourhood
VLC media player: Everybody shares their movies
Will not really need that big of a neighbourhood before you dont even need to connect to the net or the phone sevice or TV!
The problem is not believing in evolution or not. The underlaying problem is christianity. I must be obvious to any rational beeing that the whole basis for christianity or any other semitic religion (Judaism and Islam) is ridicolous.
How can it be expected that any person fed this kind of religous dogma has any ability to distinguish sound scientific truth from religous fantasy?
Kids are smart and rational until they are told religious contradictions. When they question them the are told to meditate over it for some years until they realize that the obvious contradictions in terms are actually beautiful harmonies.
In the videos they have threaded a big innertube over the structure, presumably to cushion the fall every time it tipped over.
Since the purpose of this structure is to interact with humans, They should just install big inflatable boobs and ass instead.
The movie and music industy are tiny in economic contribution compared to the hardware industry.
The total income if the whole world were to buy new HDTVs, HD Entertainment systems and players, as well as a buch of HD DVDs is an order of magnitude higher than what hollywood and RIAA stands to loose if you make it all easy and user friendly.
Instead they mess this huge opportunity up with copy protection BS.
I have no problem buying a few hundred HD DVDs for $20 each over a few years *even* if I can get a copy from a neighbour for free. The $20 gives me a nice full color case and DVD, and a nice looking collection.
The only support for the statement that this is the worlds fastest kayak is:
/. reader, went to the newspaper to tell them you had built the worlds fastest something, (say car).
1. The builder goes to MIT
2. The journalist thinks it is fast.
You start to wonder what kind of people goes to MIT. If you, dear
Would you not have some data to support your claim? A radar gun readout? A win in some competition? Anything?
"...But if you're looking for an answer to a question, you may or may not find a single document that happens to contain it....
You minsunderstand. what you do is for example a "google closeness search" or a "Google Mindshare", or finding the Normalised Google Distance (NGD) and mapping this.
You will not get any search results, it will more let you, for example, play "20 questions" like a master.
Basically, for example, the NGD quantifies the strength of a relationship between two words. For example, "speakers" and "sound" are more related than "speakers" and "elephant." Instead of creating this manually, of course, they find the Google PageCount when both words are used together in a search. ("Speakers" and "sound" would have a relatively high number of result pages when compared to "speakers" and "elephant.")
Now when you repeat this process of finding the NGD for a lot of words, you can build a multi-connection word map. This automatic meaning extraction can well be the way to make a computer understand things and act semi-intelligently. Apply this to all text produced by for example the U.N., and you will have a front end that can produce good(?) quality UN papers automatically.
Here are some more detail on this example(Automatic Meaning Discovery Using Google):
http://www.arxiv.org/abs/cs.CL/0412098
This is of course insanly compute intensive, but google have enormous supercomputers available to you for free.
I think google has surpassed OpenCyc by orders of magnitude in knowledge. You can do a lot of correlation searches etc. This can be used for language translation, as a dictionary (As seen when you misspell your google search term), and general knowledge.
All that is missing is a good frontend, to translate your questions into a few million searches.
My conclusion from the article is that the supercomputer with huge arrays of CPUs still fails compared to our slow and limited brains.
Assuming the brain is the best DSP around, at least when it comes to pattern recognition, it is a choice that at assures you a job as well.
Only problem, how to interface the brain to all the seismic data etc. Well, the brain has two hi-speed inputs: vision (100Mb/s) and hearing (10Mb/s)
The seismic data is less than 1Mb/s so it is a ok match.
Now, just create the interface. This must include a modulation of the data that is optimized for the targeted brain to process.
I guess modulate to music, and use a musicians brain is a decent choice.
Just fly back and retape the darn thing. With 1/3 of a century of technology and rocket development, that should be a breeze.
1. DC/DC conversion is cheaper and simpler bacause with a 60Hz AC signal, you have *no* power during the zero crossing. The PS has to store the energy in a capacitor or a coil to deliver during the 120 "outages" a second. A DC/DC converter operates at hundreds of kHz, so components are much smaller, and since the conversion uses square waves, it does not have the "outages" a sine function has on the input.
2. A lot of AC/DC switching power supplies is a constant power load on the grid. It tends to draw more Amps as the Voltage decreases, producing a lot of harmonics in the mains power line, and a worse power factor than regular "resistive" equipment. Therefore the mains must be overdesigned to support this kind of load.
2. 220V AC means 220V *RMS*; 110V is just one of the wires tied to ground. The peak-peak is around 311V. Not that different from 380V
It does not necessarily take much to be a realtime operating system. The only requirement is that the responsetime to an external event has to be reasonable. I am sure that 1/10 of a second is just fine for an underwater vehicle. Windows XP even on a slow processor will finish housekeeping and service an interrupt in a few thousand clock cycles or a few microseconds. (A softmodem is a fine example)
In other words, hard realtime requirements like predictable responstime becomes irrelevant when you have a 2GHz processor. At least for allmost all real world tasks.
Secondly,
Embedded only means "No modal messageboxes" should stop excecution. (like "No kbd detected, press F1 to continue")
This is well known except in the marketing departments of real time, embedded OS makers.
I read on www.roboticparking.com :
Company Strives to Maintain Its 99.99% Reliability. (Read "less than")
With half a million parkings in this garage, that means that it fails once most days.
Anybody knows what a failure is?
-Car lost
-Car dropped down
-Wrong car returned
-Car shoved into an already full slot
Here:
http://cdn.maximonline.com/maximusa/index.html
(google earth:)
-115.3829811832588
35.62000012441331
60.83465853476389
-3.743328418621198e-009
-0.0006229266229549453
I went to some presentations at UC at Berkeley bak in 2000. They had developed and were testing some WDM-on-a-chip, with integrated receivers/transmitters.
/. with interesting articles, but there is no need to have these dummed-down articles referred to here.
I klicked on the link in this article hoping to see what development had occurred over the last 6 years. To my surprise the article has nothing useful in it. Yes, thats right. No info on:
-wavelenght,
-frequency, (Is this in the 193THz IR band?)
-spectral resolution,
-insertion loss,
-return loss,
-linearity,
-polarization modes,
-passband characteristics (Is it flat for high modulation?)
-time response
Maybe it is hard to fill
So you install a intercooler on an engine to improve efficiency, and suggest seperately that you drink the water that comes out of the tailpipe.
:A diesel engine is 200% as efficient as a gas turbine.
Avoid specifics as much as possible, and wrap it up on in miltary and engineering terms, and call it technology news.
Also: Frome the article "A few percentage points (improved efficiency) might not seem like much, but it makes a big difference when fuel is scarce or expensive"
So get a diesel engine instead: http://en.wikipedia.org/wiki/Diesel_engine
Cost of living comparisons assume you spend all your money where you are.
Truth is *you don't*
Example:
Assume you work in San jose for $140k. You probably also get $30 in bonuses, and $30k in stock etc if you pick a decent company.
Maybe you have $150k after taxes or $12,500/month.
Now pay for house and food, and you have $6k left to save.
If you find another place where everyting is half of San jose, you may live just as well, and still save almost 50%. You are however only saving $3k
(And you will not find such a place. Your car, your TV, your PC and all other stuff cost just the same)
When retirement comes, you will feel the difference. Twice the money will be the difference between retiring in style or just staying put.
You probably can retire early from your job in San Jose as well.
Neither the author of this comment nor the moderators have any clue about nuclear physics.
Pleases read http://en.wikipedia.org/wiki/Radioactive_decay
Couldn't they have made an optical punch card reader that would fit into the space of two refrigerators? And stored 5MB worth of punch cards?
The bit density of this drive was:
Area: 50 platters x pi()x (r=.305m)^2 = 14.6m^2
Bits: 5MB x 10b/B=50,000,000 bits + a few for housekeeping
Density: ~4 bits/mm^2
This is similar to 8 track 128CPI tape. Ticker tape or punchcard certainly had much lower density.
With this density you could actually see the bits directly with a magnetic loupe, and read off the data visually.
In 1990, we had some brand new HP disks the size of a washing machine. Capacity 650MB.
Some software was written to move the head assembly from end to end. This would cause so much vibration the the whole machine would "walk" around.
The machine room had video cameras, and sometimes if you saw some maintenance people in the machine room, you would launch the "Butterfly test" on all the drives. They would come alive like a bad horror movie, and all walk around. The poor maintenance person would try to run out befor the exit got blocked.
First, the government is going to process the data to get a good profile of you.
Secondly they are going to use it extensively in all interaction with you.
Norway does this today and a lot more. They have a benevolent(?) government, and people live and eat well, so nobody complains much.
Here are some examples of Noway today:
1. The tax office does your full tax return for you since they have all your info anyway. You are sent a copy to confirm that all is correct, and it usually is.
2. Everyone has a personal number assigned at birth. The registry is part of the tax office. To get many benefits like free healthcare, and by law, you must report your address.
3. All public services have full access to your information. This simplifies qualifying for various programs as there is nothing to fill out.
4. Many services are only payable electronically, so a searchable database is easy to build.
5. Tollstations are fully automatic and prolific. Your movements are logged. If you drive through without an electronic tag, a camera snaps, and you are mailed a request for electronic payment. How do the find you?
6. Electronic photoboxes are installed throuout the country to catch speeders.
7. Government controlled free(subsidized) -health care, -education, -childcare makes sure they know everything, as your they are closely involved in all of your familys life.
8. Most norwegians are forced members of a union. The unions political arm, the labour party controls the government as well. The unions often offer benefits such as vacation homes. The government owns the majority of shares in the largest companies. (So i guess the union are on both sides of the table in negotiations) The government also have majority control of other big businesses such as banks.
So your job, your vacation, your representative at the salary negotiation table, your bank, your university, your retirement saving, your doctor, the daycare etc are fully controlled by the government.
Expect if you find a job where there is little connection to revenue and performance, the job will vanish due to failure of the company. As the anonymous reader self says: "..Like bell labs of YESTERYEAR".
I have worked as a R&D project manager for companies with these ivory towers of researches. While I need the algorithm next month, they usually propose to create some two year research project with some unclear goal.
I believe they should deliver or disappear.
You should just embrace the need to deliver, and have a lot of fun doing it.
Her is /.ers chance to put their money where their mouth is.
You can:
1. Buy their software here: http://www.digitalpoint.com/products/
2. Review and recommend their software.
They sell: data wizard, home inspection, isp billing domain management and radius server.
It should not be difficult to drive a few $millions in sales to them.
Consider using this for your own networks:
Name Stalker 1.2
Tool for managing your domains and monitor domains that you want. For Macintosh and Windows
or
Men & Mice Products
3 out of 4 DNS servers are incorrectly setup... find and fix problems with any DNS server. They carry Men & Mice's full line of DNS server and diagnostic tools. For Macintosh and Windows.
They are building a neutron accelerator to test some properties of neutron stars. They are having some problems as the neutron beam is moving around somewhat randomly.
Where can I get this soundbite in a useful format??
It happened long ago and the light is just now reaching us.
That it happened long ago is only true in some reference system. In other referece systems it happened just now.