While we're on the topic of redesigning computer mice: The insanely loud mouse click noise should be engineered out. One person browsing is bad enough. Several web terminals in the same room being used at once makes a hellish clatter.
[On their website,] I saw a lot info about power supplies and converters, but not anything that was a 'new generation computer chip'
On the homepage, it says, "Investor News: International Rectifier Announces New Generation of Power Chips more...". When you click more, it says, "With energy savings as great as 50 percent, these power chips offer huge potential to...."
Automotive News, May 22, 2000 v74 i5875 p4 EPA plan could mean more diesels. (Brief Article) HARRY STOFFER. Full Text: COPYRIGHT 2000 Crain Communications, Inc.
WASHINGTON - A federal plan to cut pollution drastically from large trucks and buses could have another big impact: far more diesel engines in future cars and light trucks.
The EPA's newly proposed rules to slash emissions from trucks more than 8,500 pounds include a provision to cut sulfur in diesel fuel by 97 percent.
Besides helping the big trucks' emission-control equipment work properly, low-sulfur fuel would free automakers to put advanced diesels in cars, vans, pickups and sport-utilities, government and industry officials say.
``It's a solid, solid step in the right direction,'' said Reg Modlin, director of environmental and energy planning for DaimlerChrysler.
Internal industry studies show that clean, efficient, smooth-running diesels, under some scenarios, could capture up to 25 percent of the light vehicle market within 10 years, Modlin said.
POLITICAL FIGHT
A bruising political fight is ahead for the EPA's proposal. Automakers tend to favor the plan but want more sulfur removed than the EPA is proposing. The petroleum industry, which has significant clout in Washington, vows to fight the proposal.
The Clinton administration will hold public hearings but still hopes to adopt the rules by the end of the year.
Margo Oge, director of EPA's office of transportation and air quality, said she believes the agency fuel plan is sufficiently tough to make diesels clean enough for new-car and light-truck pollution rules.
Those rules, commonly called Tier 2, were adopted late last year. They take effect in 2004.
Jo Cooper, president of the Alliance of Automobile Manufacturers, applauded EPA's low-sulfur proposal but said more is needed.
Besides even stricter sulfur limits, carmakers want other fuel properties changed to improve diesel performance and eliminate its familiar knocking sound.
Current diesel fuel is limited to 500 parts per million of sulfur, a naturally occurring contaminant. The EPA is proposing a cut to 15 parts per million.
The petroleum industry suggested a cap of 50 parts per million. Automakers would prefer 5 to 10 parts per million, said alliance Vice President Gloria Bergquist.
Environmental groups strongly favor EPA's new truck and bus rules, but some still don't want to see more diesels in cars and light trucks. Jason Mark, transportation analyst for the Union of Concerned Scientists, said even if common vehicle pollutants are cut, diesels still will have other toxic emissions.
GOOD FOR ENVIRONMENT
Frank O'Donnell, executive director of the Clean Air Trust, said his group tends to be fuel-neutral. If a diesel engine can be made as clean as a gasoline engine, then there is no reason to oppose it.
As for the truck and bus requirements, O'Donnell said, ``Basically it's a ten-strike'' for the environment.
Generally, the builders of engines for large trucks and buses say the rules will be a challenge, but they are prepared to meet them - an attitude similar to that taken by automakers last year toward Tier 2.
The petroleum industry, which balked at Tier 2 provisions cutting sulfur in gasoline to an average of 30 parts per million and maximum of 80 parts per million, is taking an even harder line on the proposed diesel cap of 15 parts per million.
Said Ed Murphy, manager of refining, marketing and transportation for the American Petroleum Institute: ``We're going to do everything we can'' to block it.
That's not true at all. At Earth's surface, the acceleration due to gravity for all objects (excluding air resistance and other such factors) is 1 g = 9.8 m/s^2 = 32 ft/s^2. It's called free fall because you're falling... freely. All objects that are falling freely at the same place will be accelerating at the same rate, and thus not be accelerating relative to one another.
If the acceleration on the trip down were 0 g, then a falling object would not speed up. If this were true, then the object would never fall. At the beginning, it's not falling, and if it doesn't speed up, it'll just stay there.
Also known as an off-by-one error. Some things to ponder:
A microdrive sitting on Earth would be undergoing 1 g of structural stress, yet would not be accelerating.
Astronauts orbiting Earth are accelerating at(undergoing a change in velocity {velocity is speed and direction} at the rate of) 1 g yet are said to be in a 0 g environment and are undergoing no structural stress.
A microdrive sitting on Earth while the mad Dr. Horticulture continuously turned up Earth's gravitational field to 10,000 gees would spontaneously fail at some point above it's acceleration limit of 1,500 gees -- yet would be sitting perfectly motionless (minus parts inside breaking) and not accelerating the whole time.
A microdrive in space, accelerating toward a massive object at 10,000 gees -- far beyond its design limit for structural integrity -- would be able to operate flawlessly and would be undergoing no structural stress (as long as the source of gravity was far enough away that we could ignore tidal forces).
A microdrive dropped from sufficient height toward a concrete section of a 1 g Earth to undergo 1,500 gees of structural stress would actually be accelerating at (undergoing a change in velocity at the rate of) 1,499 gees.
Seriously. Many digicam and PDA owners report low battery life after switching from flash to the microdrive. 1.2GB type II PC card flash memory is available. Now you know.
Obviously, the less-than-1-watt figure was quoted while running the "Blank" screen saver or something.:-)
Average power represents the power consumed by the processor while running typical office applications by an average user. Average power is measured by running industry standard benchmarks, such as Ziff-Davis* BatteryMark* 3.0 or BAPCo * SYSmark* 98 for Battery Life.
Iwas wondering the same thing - the latest Celerons are on the same 0.18m process as PIIIs, so there's no reason why they should suck more power (especially with their smaller L2 cache) UNLESS these Celerons are actually on the older process (unlikely) or the PIIIs have something up their sleeves.
The 1-watt PIII (600MHz) runs at 1.1 volts. The 2-watt chips (the 500 MHz Celeron and 750 MHz PIII) run at 1.35 volts. The 3 watt chips (the 600 and 650 MHz Celerons) run at 1.6 volts.
It just seems that by the time this comes out, Intel will already have much faster
And don't forget, lower-power-consumption chips. Check it out:
"[Paul Otellini, co-executive vice president at the Intel Architecture Group, in Santa Clara, Calif.] reviewed Intel's ongoing investments in mobile processors, including a demonstration of a 500MHz Mobile Pentium III that operates at less than 1 watt of power, which Intel expects to ramp to 1GHz in the near future. Intel hopes the chip will be ready this summer...."
Intel eyes Internet as next frontier to cross. (Company Business and Marketing) Dan Briody InfoWorld May 1, 2000 v22 i18 p5 Web version: Friday, Apr. 28, 2000
My name is Napster I live on the second floor I live upstairs from you Yes I think you've seen me before
If you hear something late at night Some kind of trouble, about copyrights Just don't ask me what it was Just don't ask me what it was Just don't ask me what it was
I think it's 'cause I bandwidth hog I try not to play MP3s too loud Maybe it's 'cause I'm new technology I try not to act too proud
Lars only hits until you cry And after that you don't ask why You just don't argue anymore You just don't argue anymore You just don't argue anymore
Yes I think I'm okay I got slashdotted again Well, if you ask that's what I'll say And it's not your business anyway
I guess I'd like to be alone With my venture cap, no law books thrown Just don't ask about my IPO Just don't ask about my IPO Just don't ask about my IPO
Intel and AMD can play this game too; it's quite possible to switch parts of their x86-type CPUs off, and they can probably run the clock speeds up and down too.
And that is apparently what Intel is doing:
[Paul Otellini, co-executive vice president at the Intel Architecture Group, in Santa Clara, Calif.] reviewed Intel's ongoing investments in mobile processors, including a demonstration of a 500MHz Mobile Pentium III that operates at less than 1 watt of power, which Intel expects to ramp to 1GHz in the near future. Intel hopes the chip will be ready this summer to enable new, smaller form factors in full-featured mobile computing.
InfoWorld, May 1, 2000 v22 i18 p5 Intel eyes Internet as next frontier to cross. (Company Business and Marketing) Dan Briody. Web version: Friday, Apr. 28, 2000
cvillopillil and Steve Woston are the same troll. You can tell by the identical writing styles, although when he trolls as cvillopillil his lure is more sophisticated. It's sort of a "good troll, bad troll" game to get people to fall for the cvillopillil version.
Moderators, please moderate all cvillopillil posts down.
United Press International, April 7, 2000 p1008097u1944 Optical microchips promise speedy communications. Full Text: COPYRIGHT 2000 United Press International
WASHINGTON, April 6 (UPI)
Scientists at the University of Washington and University of Southern California have developed an experimental optical microchip that can run up to 10 times faster than the speediest electronic devices today.
They say the higher speed and capacity of the new devices could potentially revolutionize telecommunications, data processing, sensing and display technologies. An article on the device appears in the April 7 issue of Science.
The devices, called polymeric electro-optic modulators or "opto-chips, " translate electrical signals such as those used by televisions, computers, telephones and radar, into optical or light signals at rates up to 100 billion bytes per second, or 100 gigabytes.
Although the devices are microscopic in size, they can achieve information-processing speeds up to 10 times faster than current electronic devices, and have a greater bandwidth to transmit more information more quickly. The devices also require a fraction of a volt of electricity to operate, or less than one-sixth the electricity needed by today's electro-optic crystals.
The new modulators bridge the current world of electronics and the coming world of much faster, optical devices by translating electrical signals from a computer or other electronic device into optical signals for speedier information transmission. At the receiving end of the transmission, another modulator will turn the optical signal into an electrical signal for use by a computer or other electronic device.
"Optoelectronics will be the technology of the 21st century, just like electronics was the technology of the 20th century," Larry Dalton, a professor of chemistry at both the University of Washington and the University of Southern California, and co-author of the Science paper, told United Press International.
Dalton added that he doesn't expect optical-only devices to be in wide use any time soon. But there will be a move to hybrid optical and electronic, or optoelectronic, devices that will prevail for a long time. The new modulator, he said, can be used with today's electronic devices, so it is not necessary to spend a lot of time reengineering them.
Dalton said the real breakthrough was in creating a new material that doesn't impede the speed of light transmissions at the frequencies required for high-speed communications. Dalton and his colleagues changed the shape of organic molecules called chromophores to decrease electrical field noise. The chromophores were embedded into a polymer matrix to form the modulator.
Other researchers have previously tried to exploit the speed chromophores allow, but they ran into problems controlling the interactions between the electrical fields of the chromophores that sapped their efficiency. Dalton said he changed the shape of the chromophores from elliptical to cylindrical so there was less interference.
"This is the highest speed demonstrated today," said Ray Chen, a research scientist at the University of Texas at Austin's Microelectronics Research Center. Chen expects the technology to find its way into military, security and business applications within five years.
He added, "In this millennium, from 2000 to 2020, the engine driving the economy will be optical technology. Dalton's work provides a good vehicle to approach fast optical speeds."
According to this EETimes article, high-frequency induction is a growing concern. It cites an academic paper stating "copper is much more problematic than aluminum when it comes to inductance...."
SAN DIEGO, Calif. -- The perils of chip design at 0.18 micron and below mandate new research in a number of areas, according to presenters at the recent International Symposium on Physical Design (ISPD) 2000 here. Calls were made for breakthroughs in areas such as power analysis and estimation, inductance modeling, analog layout, incremental CAD and process variability.
Beyond academic papers, this year's ISPD included a keynote speech by Aart de Geus, chairman and chief executive officer of Synopsys Inc. (Mountain View, Calif.) In his keynote speech, de Geus called for better estimation and analysis tools, and for attention to new problems such as inductance.
"Finally, after 25 years, inductance is coming back," de Geus said. "With high current, inductance does matter." But it won't be a big issue for most designers, he added, until feature sizes drop below 0.18 micron.
A paper given by Li-Fu Chang of Frequency Technology Inc. (Santa Clara, Calif.) outlined that company's research in inductance modeling of on-chip copper interconnects. Copper is much more problematic than aluminum when it comes to inductance, the paper notes.
Chang said the paper presents a "full chip" inductance modeling architecture. "Inductance modeling is much harder work than Rs and Cs [resistance and capacitance]," he noted.
...Joe Baptista, who will be selling domain names under the TLD, says outright that he will not respect trademarks or even court decisions ordering him to respect trademarks.
Slashdot Mirror
While we're on the topic of redesigning computer mice: The insanely loud mouse click noise should be engineered out. One person browsing is bad enough. Several web terminals in the same room being used at once makes a hellish clatter.
Why? What is this feature for?
[On their website,] I saw a lot info about power supplies and converters, but not anything that was a 'new generation computer chip'
On the homepage, it says, "Investor News:
International Rectifier Announces New Generation of Power Chips more...". When you click more, it says, "With energy savings as great as 50 percent, these power chips offer huge potential to...."
I thought I'd seen this somewhere before.
Automotive News, May 22, 2000 v74 i5875 p4
EPA plan could mean more diesels. (Brief Article) HARRY STOFFER.
Full Text: COPYRIGHT 2000 Crain Communications, Inc.
WASHINGTON - A federal plan to cut pollution drastically from large trucks and buses could have another big impact: far more diesel engines in future cars and light trucks.
The EPA's newly proposed rules to slash emissions from trucks more than 8,500 pounds include a provision to cut sulfur in diesel fuel by 97 percent.
Besides helping the big trucks' emission-control equipment work properly, low-sulfur fuel would free automakers to put advanced diesels in cars, vans, pickups and sport-utilities, government and industry officials say.
``It's a solid, solid step in the right direction,'' said Reg Modlin, director of environmental and energy planning for DaimlerChrysler.
Internal industry studies show that clean, efficient, smooth-running diesels, under some scenarios, could capture up to 25 percent of the light vehicle market within 10 years, Modlin said.
POLITICAL FIGHT
A bruising political fight is ahead for the EPA's proposal. Automakers tend to favor the plan but want more sulfur removed than the EPA is proposing. The petroleum industry, which has significant clout in Washington, vows to fight the proposal.
The Clinton administration will hold public hearings but still hopes to adopt the rules by the end of the year.
Margo Oge, director of EPA's office of transportation and air quality, said she believes the agency fuel plan is sufficiently tough to make diesels clean enough for new-car and light-truck pollution rules.
Those rules, commonly called Tier 2, were adopted late last year. They take effect in 2004.
Jo Cooper, president of the Alliance of Automobile Manufacturers, applauded EPA's low-sulfur proposal but said more is needed.
Besides even stricter sulfur limits, carmakers want other fuel properties changed to improve diesel performance and eliminate its familiar knocking sound.
Current diesel fuel is limited to 500 parts per million of sulfur, a naturally occurring contaminant. The EPA is proposing a cut to 15 parts per million.
The petroleum industry suggested a cap of 50 parts per million. Automakers would prefer 5 to 10 parts per million, said alliance Vice President Gloria Bergquist.
Environmental groups strongly favor EPA's new truck and bus rules, but some still don't want to see more diesels in cars and light trucks. Jason Mark, transportation analyst for the Union of Concerned Scientists, said even if common vehicle pollutants are cut, diesels still will have other toxic emissions.
GOOD FOR ENVIRONMENT
Frank O'Donnell, executive director of the Clean Air Trust, said his group tends to be fuel-neutral. If a diesel engine can be made as clean as a gasoline engine, then there is no reason to oppose it.
As for the truck and bus requirements, O'Donnell said, ``Basically it's a ten-strike'' for the environment.
Generally, the builders of engines for large trucks and buses say the rules will be a challenge, but they are prepared to meet them - an attitude similar to that taken by automakers last year toward Tier 2.
The petroleum industry, which balked at Tier 2 provisions cutting sulfur in gasoline to an average of 30 parts per million and maximum of 80 parts per million, is taking an even harder line on the proposed diesel cap of 15 parts per million.
Said Ed Murphy, manager of refining, marketing and transportation for the American Petroleum Institute: ``We're going to do everything we can'' to block it.
Glamatron:
Fifteen hundred gee. That sounds like a lot.. but what does that mean in real terms.
1,000 gees is "equivalent to an eight-foot drop to concrete."
Does this prove the feared and hated Bell Curve right?
That's not true at all. At Earth's surface, the acceleration due to gravity for all objects (excluding air resistance and other such factors) is 1 g = 9.8 m/s^2 = 32 ft/s^2. It's called free fall because you're falling... freely. All objects that are falling freely at the same place will be accelerating at the same rate, and thus not be accelerating relative to one another.
If the acceleration on the trip down were 0 g, then a falling object would not speed up. If this were true, then the object would never fall. At the beginning, it's not falling, and if it doesn't speed up, it'll just stay there.
Also known as an off-by-one error. Some things to ponder:
A microdrive sitting on Earth would be undergoing 1 g of structural stress, yet would not be accelerating.
Astronauts orbiting Earth are accelerating at(undergoing a change in velocity {velocity is speed and direction} at the rate of) 1 g yet are said to be in a 0 g environment and are undergoing no structural stress.
A microdrive sitting on Earth while the mad Dr. Horticulture continuously turned up Earth's gravitational field to 10,000 gees would spontaneously fail at some point above it's acceleration limit of 1,500 gees -- yet would be sitting perfectly motionless (minus parts inside breaking) and not accelerating the whole time.
A microdrive in space, accelerating toward a massive object at 10,000 gees -- far beyond its design limit for structural integrity -- would be able to operate flawlessly and would be undergoing no structural stress (as long as the source of gravity was far enough away that we could ignore tidal forces).
A microdrive dropped from sufficient height toward a concrete section of a 1 g Earth to undergo 1,500 gees of structural stress would actually be accelerating at (undergoing a change in velocity at the rate of) 1,499 gees.
Seriously. Many digicam and PDA owners report low battery life after switching from flash to the microdrive. 1.2GB type II PC card flash memory is available. Now you know.
wait until I get my paws on one of those 2000x1600 cameras
2048x1536 (1024*2x768*2)
blueg3:
The acceleration on the trip down is 1 g.
The acceleration on the trip down is 0 (zero) g. That's why it's called free-fall, kidz.
Obviously, the less-than-1-watt figure was quoted while running the "Blank" screen saver or something. :-)
Average power represents the power consumed by the processor while running typical office applications by an average user. Average power is measured by running industry standard benchmarks, such as Ziff-Davis* BatteryMark* 3.0 or BAPCo * SYSmark* 98 for Battery Life.
Iwas wondering the same thing - the latest Celerons are on the same 0.18m process as PIIIs, so there's no reason why they should suck more power (especially with their smaller L2 cache) UNLESS these Celerons are actually on the older process (unlikely) or the PIIIs have something up their sleeves.
The 1-watt PIII (600MHz) runs at 1.1 volts. The 2-watt chips (the 500 MHz Celeron and 750 MHz PIII) run at 1.35 volts. The 3 watt chips (the 600 and 650 MHz Celerons) run at 1.6 volts.
Check the specs: The iPAQ has a lithium-polymer battery. Nice to see.
gnokii allows you to do everything the Nokia Data Suite can do -- including data calls -- in Linux or BSD.
IBM has the Deskstar 75GXP series
Yes, they do, but it's not ATA/100 . . . at least, not according to IBM:
It just seems that by the time this comes out, Intel will already have much faster
And don't forget, lower-power-consumption chips. Check it out:
"[Paul Otellini, co-executive vice president at the Intel Architecture Group, in Santa Clara, Calif.] reviewed Intel's ongoing investments in mobile processors, including a demonstration of a 500MHz Mobile Pentium III that operates at less than 1 watt of power, which Intel expects to ramp to 1GHz in the near future. Intel hopes the chip will be ready this summer...."
Intel eyes Internet as next frontier to cross. (Company Business and Marketing) Dan Briody
InfoWorld May 1, 2000 v22 i18 p5
Web version:
Friday, Apr. 28, 2000
My name is Napster
I live on the second floor
I live upstairs from you
Yes I think you've seen me before
If you hear something late at night
Some kind of trouble, about copyrights
Just don't ask me what it was
Just don't ask me what it was
Just don't ask me what it was
I think it's 'cause I bandwidth hog
I try not to play MP3s too loud
Maybe it's 'cause I'm new technology
I try not to act too proud
Lars only hits until you cry
And after that you don't ask why
You just don't argue anymore
You just don't argue anymore
You just don't argue anymore
Yes I think I'm okay
I got slashdotted again
Well, if you ask that's what I'll say
And it's not your business anyway
I guess I'd like to be alone
With my venture cap, no law books thrown
Just don't ask about my IPO
Just don't ask about my IPO
Just don't ask about my IPO
Intel and AMD can play this game too; it's quite possible to switch parts of their x86-type CPUs off, and they can probably run the clock speeds up and down too.
And that is apparently what Intel is doing:
[Paul Otellini, co-executive vice president at the Intel Architecture Group, in Santa Clara, Calif.] reviewed Intel's ongoing investments in mobile processors, including a demonstration of a 500MHz Mobile Pentium III that operates at less than 1 watt of power, which Intel expects to ramp to 1GHz in the near future. Intel hopes the chip will be ready this summer to enable new, smaller form factors in full-featured mobile computing.
InfoWorld, May 1, 2000 v22 i18 p5
Intel eyes Internet as next frontier to cross. (Company Business and Marketing) Dan Briody.
Web version: Friday, Apr. 28, 2000
Perhaps it's time for a MPG/QT/ASF player for the Java platform.
Perhaps it's time the moderators started modding down cvillopillil/Steve Woston the troll.
cvillopillil and Steve Woston are the same troll. You can tell by the identical writing styles, although when he trolls as cvillopillil his lure is more sophisticated. It's sort of a "good troll, bad troll" game to get people to fall for the cvillopillil version.
Moderators, please moderate all cvillopillil posts down.
United Press International, April 7, 2000 p1008097u1944
Optical microchips promise speedy communications.
Full Text: COPYRIGHT 2000 United Press International
WASHINGTON, April 6 (UPI)
Scientists at the University of Washington and University of Southern California have developed an experimental optical microchip that can run up to 10 times faster than the speediest electronic devices today.
They say the higher speed and capacity of the new devices could potentially revolutionize telecommunications, data processing, sensing and display technologies. An article on the device appears in the April 7 issue of Science.
The devices, called polymeric electro-optic modulators or "opto-chips, " translate electrical signals such as those used by televisions, computers, telephones and radar, into optical or light signals at rates up to 100 billion bytes per second, or 100 gigabytes.
Although the devices are microscopic in size, they can achieve information-processing speeds up to 10 times faster than current electronic devices, and have a greater bandwidth to transmit more information more quickly. The devices also require a fraction of a volt of electricity to operate, or less than one-sixth the electricity needed by today's electro-optic crystals.
The new modulators bridge the current world of electronics and the coming world of much faster, optical devices by translating electrical signals from a computer or other electronic device into optical signals for speedier information transmission. At the receiving end of the transmission, another modulator will turn the optical signal into an electrical signal for use by a computer or other electronic device.
"Optoelectronics will be the technology of the 21st century, just like electronics was the technology of the 20th century," Larry Dalton, a professor of chemistry at both the University of Washington and the University of Southern California, and co-author of the Science paper, told United Press International.
Dalton added that he doesn't expect optical-only devices to be in wide use any time soon. But there will be a move to hybrid optical and electronic, or optoelectronic, devices that will prevail for a long time. The new modulator, he said, can be used with today's electronic devices, so it is not necessary to spend a lot of time reengineering them.
Dalton said the real breakthrough was in creating a new material that doesn't impede the speed of light transmissions at the frequencies required for high-speed communications. Dalton and his colleagues changed the shape of organic molecules called chromophores to decrease electrical field noise. The chromophores were embedded into a polymer matrix to form the modulator.
Other researchers have previously tried to exploit the speed chromophores allow, but they ran into problems controlling the interactions between the electrical fields of the chromophores that sapped their efficiency. Dalton said he changed the shape of the chromophores from elliptical to cylindrical so there was less interference.
"This is the highest speed demonstrated today," said Ray Chen, a research scientist at the University of Texas at Austin's Microelectronics Research Center. Chen expects the technology to find its way into military, security and business applications within five years.
He added, "In this millennium, from 2000 to 2020, the engine driving the economy will be optical technology. Dalton's work provides a good vehicle to approach fast optical speeds."
check http://www.bobsguide.com/
On bobsguide.com I searched for [linux]. I came up with:
Anvil Repo Trading System (ARTS)
Platform: HP-UX 10.20, Solaris 2.6 & Linux
Category: Deal capture and Trading
--
FANPAC
Platform: Win NT/95/98, UNIX, Linux
Category: Portfolio Management
--
FANPAC
Platform: Win NT/95/98, UNIX, Linux
Category: Risk Management
--
GAUSS Engine
Platform: Win NT/95/98, UNIX, Linux
Category: Treasury systems covering front, middle and back office
--
Mathematica
Platform: Windows, Macintosh, Linux, Unix, NEXTSTEP
Category: Software components for the dealing room
--
S-PLUS
Platform: Microsoft Windows NT, 95 or 98, UNIX and Linux
Category: Capital Markets Analytics
Shortwave signals are bounced back off of the earth's upper atmosphere...
Shortwave and AM signals don't reflect off the atmosphere. They refract. There is some absorbtion to worry about, but at least there isn't reflection.
According to this EETimes article, high-frequency induction is a growing concern. It cites an academic paper stating "copper is much more problematic than aluminum when it comes to inductance...."
SAN DIEGO, Calif. -- The perils of chip design at 0.18 micron and below mandate new research in a number of areas, according to presenters at the recent International Symposium on Physical Design (ISPD) 2000 here. Calls were made for breakthroughs in areas such as power analysis and estimation, inductance modeling, analog layout, incremental CAD and process variability.
Beyond academic papers, this year's ISPD included a keynote speech by Aart de Geus, chairman and chief executive officer of Synopsys Inc. (Mountain View, Calif.) In his keynote speech, de Geus called for better estimation and analysis tools, and for attention to new problems such as inductance.
"Finally, after 25 years, inductance is coming back," de Geus said. "With high current, inductance does matter." But it won't be a big issue for most designers, he added, until feature sizes drop below 0.18 micron.
A paper given by Li-Fu Chang of Frequency Technology Inc. (Santa Clara, Calif.) outlined that company's research in inductance modeling of on-chip copper interconnects. Copper is much more problematic than aluminum when it comes to inductance, the paper notes.
Chang said the paper presents a "full chip" inductance modeling architecture. "Inductance modeling is much harder work than Rs and Cs [resistance and capacitance]," he noted.
...Joe Baptista, who will be selling domain names under the TLD, says outright that he will not respect trademarks or even court decisions ordering him to respect trademarks.
Well, who does he think he is? God?