I guess this depends on how you define "data". The Economist recently described a Berkeley report that 3.5 to 5.5 *Exabytes* of data were produced in 2002. If you believe the unlikely proposition that Blue Glue is holding 70% of that new data, then you have to wonder why IBM only made $4.2B in selling mainframes to store and process that data.
Or just make repeated copies of a large file that isn't private. This is even simple under Windoze - just create a DOS batch file to make the multiple copies.
what this nutcase is proposing here is nothing short of ecological genocide. If large predators escape from this "park" you can kiss goodbye all of the rare and beautiful marsupial animals that inhabit his "home"
Or he could surround the core conservation area with a hunting area, leading to the best of both worlds: Claim to be conserving foreign wildlife in the core area, and helping to conserve indigenous wildlife outside of the core area, while also pleasing Neanderthals who maintain the urge to kill anything that moves.
Has anyone observed 11Mb/s on their 802.11b WLAN? Does anyone expect to observe 54Mb/s on a 802.11g WLAN? No.
The performance of an 802.11 WLAN depends on the MAC protocol as much as the transmission rate. 802.11b employs a collision avoidance scheme in which stations wait a random period after detecting an idle medium. For.11b, this random period starts being uniformly distributed between 0 and 31 "slots", each of which is 20us long. The range increases exponentially with subsequent collisions (63, 127 etc). Even with the initial range, the wait will last on average 15*20=300us. In contrast, the transmission time for a 1500B frame is 1ms - i.e. the MAC protocol spends 1/3 of the time waiting. This is why the maximum throghput measured with 802.11b is around 6Mb/s, and why (unless they've changed the MAC) the performance of 802.11g won't get up to 54Mb/s. Unless they've also changed the MAC protocol, or its parameters, 802.11g will only be able to achieve a throughput of about 30Mb/s - 200us for the packet and 300us waiting.
People should be more interested in end-to-end throughput, which will improve just as much with changes to the MAC protocol as with changes to the transmission rate.
I read once (wish I could remember the source) that the American spelling was due to a typo introduced into some document, and the meme spread from there.
my 11mb wireless lan is already 11 times faster than my net connection
While.11b systems have a theoretical line transmission rate of 11Mb/s, most implementations struggle to achieve 6Mb/s or so of network-layer throughput, e.g. see here and here. That's only a couple of times the capacity of a T1 line. Hopefully the.11a systems will increase the speed by several times yet again.
802.11 offers 3 channels, so if adjacent access points coordinate which channels they use, then they need not interfere. Access points that are further away will not interfere due to their limited power limiting the propagation of their signals.
IR failed because it is essentially need line-of-sight - you need to physically arrange the source and destination so that they can see eachother. That's the reason that it failed - it required too much labour. RF technologies like Bluetooth and 802.11 don't have that limitation.
Bluetooth is the same way - you have to be so close that it's not really useful
Wireless LAN/PAN connectivity is essential. It simplifies synchronization with desktops, allows development of geographical communities of interest (e.g. using the Cybiko, allows more device specialization (e.g. I can wear separate devices for image capture, image display, audio input, audio output etc depending on which devices I want).
Tim
From my reading, the article deals with advances in the user interfaces for mobile systems. It has very little to do with wireless communications. The UI issues would be equally applicable to a system that had no wireless communications, with the I/O devices connected via wires.
Can you seperate out the FORMATING (which might be in MS Word) from the content? For example by using a Master document format - importing TEXT documents into MS Word? This would allow great flexibility in versioning the underlying text documents, keep a smaller MS Word file, and that file could be "versioned" storing copies of each successive version?
If they could, then they should have saved the documents as text files in the first place. I think that the concern is for documents that have to be binary for whatever reason.
"This is a logical step for a small country that has no music exports anyway: by weakening copyright they are making their citizens richer without losing revenue."
Isn't this equivalent to tariffs and other barriers to free trade, whereby a country attempts to hinder the ability of foreign entities to sell to its market? This would discourage the incentive for efficient production, since countries that aren't efficient or don't produce would simply erect barriers such as this to prevent more efficent producers from selling to their market.
Slashdot Mirror
I guess this depends on how you define "data". The Economist recently described a Berkeley report that 3.5 to 5.5 *Exabytes* of data were produced in 2002. If you believe the unlikely proposition that Blue Glue is holding 70% of that new data, then you have to wonder why IBM only made $4.2B in selling mainframes to store and process that data.
Haven't we been here before, about a year ago?!
There was another review of GigE performance in the IEEE Network Magazine last year.
Or just make repeated copies of a large file that isn't private. This is even simple under Windoze - just create a DOS batch file to make the multiple copies.
There is also a story in the press today about some Japanese researchers who have developed eyes biologically.
Or he could surround the core conservation area with a hunting area, leading to the best of both worlds: Claim to be conserving foreign wildlife in the core area, and helping to conserve indigenous wildlife outside of the core area, while also pleasing Neanderthals who maintain the urge to kill anything that moves.
Tim
The performance of an 802.11 WLAN depends on the MAC protocol as much as the transmission rate. 802.11b employs a collision avoidance scheme in which stations wait a random period after detecting an idle medium. For
People should be more interested in end-to-end throughput, which will improve just as much with changes to the MAC protocol as with changes to the transmission rate.
Tim
The paper by Davies is available online here.
Tim
So the venerable DEC rises from the ashes?
First Compaq buys Digital Equipment Corporation, and then HP buys Compaq. The result? DEC changes from a name associated with minicomputers and mainframes to entertainment equipment. Hmmm...
Tim
I read once (wish I could remember the source) that the American spelling was due to a typo introduced into some document, and the meme spread from there.
While
Tim
Bob Lucky of Telcordia/FCC has called it Grass-roots Networking. That's a more appealing name.
802.11 offers 3 channels, so if adjacent access points coordinate which channels they use, then they need not interfere. Access points that are further away will not interfere due to their limited power limiting the propagation of their signals.
Bluetooth is the same way - you have to be so close that it's not really useful
10 metres is too close to be useful?!
Tim
As opposed to Switzerland in Oregon, Germany in Georgia (thats all in the USA). Tim
Wireless LAN/PAN connectivity is essential. It simplifies synchronization with desktops, allows development of geographical communities of interest (e.g. using the Cybiko, allows more device specialization (e.g. I can wear separate devices for image capture, image display, audio input, audio output etc depending on which devices I want). Tim
So that should last Amazon about 2 months to pay for their losses ($168M for the last quarter).
Except work = power * time (e.g. joules = watts * seconds), which leads to the opposite conclusion: money = work/knowledge
Australia became the fourth country to launch a satellite (WRESAT) way back in 1967.
From my reading, the article deals with advances in the user interfaces for mobile systems. It has very little to do with wireless communications. The UI issues would be equally applicable to a system that had no wireless communications, with the I/O devices connected via wires.
If they could, then they should have saved the documents as text files in the first place. I think that the concern is for documents that have to be binary for whatever reason.
Isn't this equivalent to tariffs and other barriers to free trade, whereby a country attempts to hinder the ability of foreign entities to sell to its market? This would discourage the incentive for efficient production, since countries that aren't efficient or don't produce would simply erect barriers such as this to prevent more efficent producers from selling to their market.
Does anyone know the text and source (e.g. magazine) of the original, 1965, Moore's Law?
Edinburgh is co-located with a large lab of the Defence Science and Technology Organisation which influences whether Australia will buy the birds.