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Old 06-21-2011, 12:02 AM   #51
Captain TinklePee
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Quote:
Originally Posted by masskillingspree View Post
parker, parker, parker...

http://forums.nasioc.com/forums/show....php?t=2125036

What's wrong with that thread? You too good for that thread?
yes. that thread has an entirely different purpose than this one.
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Old 06-21-2011, 12:08 AM   #52
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all the stuff in this link, i want it yesterday.
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Old 07-01-2011, 12:09 AM   #53
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i don't understand 90% of this but it sounds cool.

Quote:
IBM announces computer memory breakthrough

Phase-change memory offers 100 times the write performance of NAND flash

By Lucas Mearian
June 30, 2011 06:00 AM ET
6 Comments

Computerworld - IBM Thursday announced a breakthrough in computer memory technology, which may lead to the development of solid-state chips that can store as much data as NAND flash technology but with 100 times the performance and vastly greater lifespan.


Currently, NAND flash memory products, such as SSDs, have write rates as high as 2Gbit/sec.


IBM said it has produced phase-change memory (PCM) chips that can store two bits of data per cell without data corruption problems, something that has plagued PCM development from the start.
Quote:
IBM's phase-change memory chip uses circuitry that is 90 nanometers in width

Like NAND flash memory, which is used in solid state drives (SSDs) and is embedded in computers like Apple's MacBook Air, PCM is nonvolatile -- meaning it retains data after its power supply is shut down.


Unlike NAND flash, PCM memory does not require that existing data be marked for deletion prior to new data being written to it -- a process known to as an erase-write cycle. Erase-write cycles slow NAND flash performance and, over time, wear it out, giving it a lifespan that ranges from 5,000 to 10,000 write cycles in consumer products and

up to 100,000 cycles in enterprise-class products.

PCM can sustain up to 5 million write cycles, according to IBM.
"If you can write to flash 3,000 times, that will outlive most cell phones and MP3 players, but that's certainly not good enough for the enterprise that does that in an hour," said Christopher Sciacca, manager of communications for IBM Research in Zurich.


As organizations and consumers increasingly embrace cloud-computing models and services, ever more powerful and efficient, yet affordable storage technologies are needed, according to Haris Pozidis, manager of memory and probe technologies at IBM Research.
Pozidis said that for the past five months, teams of IBM scientists have been testing a multi-level cell (MLC) chip that's capable of storing two and eventually three bits of data, indicating that it can achieve a level of reliability that is suitable for practical applications.
Besides applications for enterprises and in the cloud, PCM may also serve as an extension for DRAM.


While DRAM will continue to be used as the closest memory device to the CPU for the most active data, Pozidis said, PCM, with its greater capacity, can be used for less frequently accessed data. "The PCM, which is much larger, acts as a repositor. If the data becomes hot again it will move back to the DRAM," he said.


In another scenario, Pozidis said, the CPU can talk directly to the PCM, but it thinks its talking to the DRAM using a controller. "Again, the hot data speaks to DRAM and not so hot data speaks to the PCM," he said.


DRAM is also expected to hit a technical wall in several years when it reaches lithography sizes of between 20-30 nanometers. One nanometer is roughly the size of four gold atoms.


A nascent technology, PCM is used today as a replacement for NOR, EEPROM, NVRAM memory that are currently manufactured by Micron Technology, Samsung, and South Korea's Hynix Semiconductor.
Current technology is single-level cell (SLC) PCM, which only stores one bit per cell with limited capacity. For example, Samsung produces a 512Mbit PCM chip for its GT-E2550 GSM mobile phone. Micron's Numonyx division makes a 128 Mbit PCM chip and is shipping product to several customers who use it in networking equipment, medical monitoring devices, and security cameras.
Samsung's PCM RAM chip



PCM uses electrical charges to change areas on a glassy material from crystalline to random or amorphous. The technique uses far less power than NAND flash to store data and it has data write rates up to 100 times faster because it does not first require existing data to be marked for deletion.


PCM leverages the resistance change that occurs in the material -- an alloy of various elements -- when it changes its phase from crystalline - featuring low resistance - to amorphous - featuring high resistance - to store data bits. In a PCM cell, where a phase-change material is deposited between a top and a bottom electrode, phase change can controllably be induced by applying voltage or current pulses of different strengths. These heat up the material, and when distinct temperature thresholds are reached cause the material to change from crystalline to amorphous or vice versa.


IBM scientists said they were able to solve the bit error problem associated with MLC PCM memory by using an advanced modulation coding technique, which addresses the problem of short-term drift. Short-term drift is analogous to a problem in NAND flash memory where electrons leak through the thin walls of cells and create data read errors.
In NAND flash, the problem is addressed through the use of error correction code (ECC) in controller chips. But in PCM, data errors are not corrected but avoided through the use of specialized code.
"With modulation codes you try to avoid the most probable errors. Modulation codes appear today in hard disk drives as well as optical drives such as Blu-ray discs," Pozidis said. "We apply a voltage pulse based on the deviation from the desired level and then measure the resistance. If the desired level of resistance is not achieved, we apply another voltage pulse and measure again - until we achieve the exact level."


IBM scientists achieved a worst-case write latency of about 10 microseconds, which represents a 100x performance increase over even the most advanced flash memory on the market today.
Pozidis said IBM is currently using PCM circuitry that is 90 nanometers in size, or about twice the width of today's densest SLC PCM products. But that too will shrink over time.


IBM is not planning to produce consumer grade products out of PCM, Pozidis said. The main target for the technology is to license it to memory manufacturers, such as Toshiba and Samsung, and help them accelerate the production of the memory chips for enterprise applications.
Other researchers have been combining carbon nanotube technology with PCM to create chips that sip electricity and could extend the battery life of mobile devices to weeks.
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Old 07-01-2011, 12:23 AM   #54
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From the Journal of Things Kurt Vonnegut Warned Us About, Japanese scientists have discovered a way to make water freeze at room temperature.

The team of scientists were investigating the properties of water molecules wrapped in single-atom thick carbon nanotubes. The nanoconfined water displayed several unusual properties. Most striking was that as the width of the carbon nanotube decreased, the melting point of the water trapped inside rose. These "tubule ices" are unlike any seen in bulk water, and can even occur at room temperatures.

Thankfully, there's no risk of this Japanese Ice-nine spreading through the municipal water supply, crystallising everything it touches. But nano-confined water does occur everywhere in nature - from soil to the insides of the human body. So pat yourself the back, you're even more amazing than you realised.

The work was carried out by scientists from Tokyo Metropolitan University, Nagoya University, Japan Science and Technology Agency, and National Institute of Advanced Industrial Science and Technology, and is published in the Journal of Chemical Physics.
http://scienceblogs.com/sciencepunk/...ot_freezes.php
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Old 07-11-2011, 12:42 PM   #55
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Old 07-11-2011, 12:54 PM   #56
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Quote:
Originally Posted by chapstien View Post
32 miles.

If they start at the north or south pole.

I was thinking that maybe it was a trick question where it would be closer that the distance on earth since the earth curves so it would be the length of the chord between the two cars.

If you want to get really picky about it they'll be more than 32 miles apart, even with a polar start. If you drive in any straight heading on the globe you won't follow a parallel of latitude (except the equator, or a north/south heading). You will instead follow what's called a Rhumb Line, which takes you on a spiral path as shown here:



To stay the 32 miles apart the cars would have to continue a slight turn to the left.
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Old 07-16-2011, 08:41 PM   #57
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I found this quite interesting. Can't wait to see if this actually becomes a reality.

http://www.yert.com/video.php?post_id=3723954#SignTop
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Old 07-16-2011, 09:22 PM   #58
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even though this happened years ago, i only recently learned about it, and it's incredibly ****ing cool.


combine that with the
from a half century ago, and i give it about 20 years before i start shopping for terminator bodies to replace my middle age physical form.
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Old 07-18-2011, 08:55 AM   #59
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Old 07-18-2011, 09:57 AM   #60
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Is this the thread where I spread the message of our lord and savior, Jesus Christ?
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Old 07-18-2011, 10:02 AM   #61
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Quote:
Originally Posted by chapstien View Post
this is exactly how i see the future in my head.

Quote:
Originally Posted by BGPunk2001 View Post
Is this the thread where I spread the message of our lord and savior, Jesus Christ?
well, yeah, why wouldn't it be?
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Old 07-25-2011, 12:31 PM   #62
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Last edited by Captain TinklePee; 07-25-2011 at 01:12 PM.
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Old 07-25-2011, 01:43 PM   #63
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PP5: hey OT, we're about a year away from understanding the basic building blocks of all matter!

OT: *crickets*
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Old 07-25-2011, 01:46 PM   #64
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Quote:
Originally Posted by parkerpaxton5 View Post
PP5: hey OT, we're about a year away from understanding the basic building blocks of all matter!

OT: *crickets*
if it''ll help my dealership get my wheel bearing installed correctly - it'll be well worth the expense.
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Old 07-25-2011, 02:05 PM   #65
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Quote:
Originally Posted by 1 Lucky Texan

if it''ll help my dealership get my wheel bearing installed correctly - it'll be well worth the expense.
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Old 07-27-2011, 02:29 AM   #66
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Old 07-27-2011, 03:31 AM   #67
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Quote:
Originally Posted by Crazy_pilot View Post
If you want to get really picky about it they'll be more than 32 miles apart, even with a polar start. If you drive in any straight heading on the globe you won't follow a parallel of latitude (except the equator, or a north/south heading). You will instead follow what's called a Rhumb Line, which takes you on a spiral path as shown here:



To stay the 32 miles apart the cars would have to continue a slight turn to the left.
If you want to get picky, since the question never stated the two car started at the same point, I'm going to just say the answer is 1620 miles and be right because I assume the starting points were several states apart.
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Old 07-27-2011, 08:59 AM   #68
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Quote:
Originally Posted by sperry View Post
If you want to get picky, since the question never stated the two car started at the same point, I'm going to just say the answer is 1620 miles and be right because I assume the starting points were several states apart.
I think one of them is a flying car.

How does that look?
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Old 07-28-2011, 12:25 AM   #69
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******Two of these spots, called Lagrangian points, lie along a planet's orbit - one ahead of the planet and one behind it. Drawing straight lines between the Earth, the sun and a Lagrangian point produces a triangle whose sides are equal in length. An asteroid there would hover in the sky at a 60-degree angle from the sun.

Any object that close to the sun would be difficult to see from Earth because it would be overhead mostly during broad daylight, as invisible as the stars.

But Martin Connors, a space scientist at Athabasca University in Alberta, Canada, had an idea. Maybe NASA's Wide-Field Infrared Survey Explorer, which aims its lens 90 degrees away from the sun, would be able to pick up an oddball Trojan with an eccentric orbit.

Indeed it did.******

http://www.latimes.com/news/science/...0,284121.story
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Old 08-03-2011, 08:13 AM   #70
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Old 08-16-2011, 06:17 AM   #71
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Okay, got a little maths problem I need to confirm Know there's lots of smart dudes here so thought I'd see if someone wants to confirm/deny what I've done.

I am really terrible at maths (like, REALLY bad) and was given this equation to solve:

9-2(x+a) = 3x -a

I'm not asking for the answer, just if anyone can tell me if I'm doing it wrong.

-2x -2a + 9 = 3x -a
then:
-5x + 9 = a
then:
-5x = a -9

x = negative a-9 over 5

Sorry for asking, just want to know :P Don't want people 'doing my homework' just a nudge in the right direction. Posted this in 4chan sci and I'm sure they'll tell me to prepare my angus

Oh and I posted in this thread because I couldn't think of one more appropriate and creating one is even more retarded :P
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Old 08-16-2011, 06:18 AM   #72
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Quote:
Originally Posted by subasurf
Okay, got a little maths problem I need to confirm Know there's lots of smart dudes here so thought I'd see if someone wants to confirm/deny what I've done.

I am really terrible at maths (like, REALLY bad) and was given this equation to solve:

9-2(x+a) = 3x -a

I'm not asking for the answer, just if anyone can tell me if I'm doing it wrong.

-2x -2a + 9 = 3x -a
then:
-5x + 9 = a
then:
-5x = a -9

x = negative a-9 over 5

Sorry for asking, just want to know :P Don't want people 'doing my homework' just a nudge in the right direction. Posted this in 4chan sci and I'm sure they'll tell me to prepare my angus

Oh and I posted in this thread because I couldn't think of one more appropriate and creating one is even more retarded :P
... what the ****?
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Old 08-16-2011, 06:19 AM   #73
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ease up, I'm retarded and have no where else to turn.
help me OT, you're my only hope
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Old 08-16-2011, 08:08 AM   #74
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oh you're definitely in the wrong thread. nobody even looks at this thread.
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Old 08-16-2011, 08:58 AM   #75
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I'm horrible at math too. I thought you'd divide each side by x or a to start??????
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