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taken awhile back to help entry into LibraryThing - seemed a better plan than schlepping huge stacks of books back & forth over & over...have gotten quite a few more books that don't appear here tho.
Scientists used quantum chemical calculations and computer simulations to model how a platinum catalyst interacts with water. (Catalysts are important in nearly everything we manufacture today). The oxygen atoms, in water, are depicted in red; the hydrogen molecules are white, and platinum atoms are in blue-gray. High-level details of the structure can be seen in the reflections of each atom surface.
--more details--
The ice-like hexagonal structure of water molecules interacting with and above a model platinum catalyst surface is determined from quantum chemical calculations. Oxygen atoms in water shown as red, hydrogen atoms as white; platinum atoms are shown in bluish-grey. High-level details of the structure can be seen in the reflections of each atom surface.
Rees Rankin (Argonne's Center for Nanoscale Materials)
Photo courtesy of Argonne National Laboratory.
O Cloud Computing Summit Brasil é um evento com participação dos principais players do mercado mundial que abordarão tendências do Cloud Computing e seu impacto sobre o mercado de TI e negócios.
Weblog: www.rafaeldesigner.com.br/blog/
Twitter: www.twitter.com/rafaeldesigner/
NEW YORK BLUE SUPERCOMPUTER: A Brookhaven Lab technology architect holds one of the 576 node cards that make up the New York Blue supercomputer. New York Blue has a total of 36864 processors and can perform 100 trillion calculations per second.
Through a combination of 22 years, a lot of weather, a little unreliability, and some super-cheap auctions I seem to have amassed, at the time of writing, nine cycle computers.
From left to right:
Cateye Mity / CC-MT100
Cateye Enduro 2 / CC-ED200
Cateye Mity 3 / CC-MT300
Sigma Sport BC1200
Cateye Astrale / CC-CD100
Cateye Mity 8 / CC-MT400
Cateye Micro Wireless / CC-MC100W
Planet Bike protegé 8.0
In 1991, when the Mity was brand new, you got a clock instead of average speed; the Cateye Vectra of a year or two previously gave you average speed but no clock! You had to buy the Cateye ATC (which cost as much as a pair of Oakleys) to get both. I made do by adding my distance and time into a matrix on my programmable calculator, each day, and having it do the maths (and produce the excessively nerdy graphs). The Mity still works perfectly internally, but the metal contacts on both the unit and its bracket have worn down too much.
The Enduro 2 was good because it came with a great big thick sensor cable for gnarly mountain bikers, and also ideal for folding bikes; and the Mity 3 was actually exactly the same inside but came with a microscopically thin, fiddly cable. Like everyone else, Iomega and Nintendo included, Cateye leapt on the translucent plastics bandwagon (courtesy of the original Apple iMac) so you could buy the Mity 3 in Clear, Strawberry, Tangerine, Grape, Lime and Blueberry colours, as well as Black. By then you got a 12/24hr clock and average speed, two trip odometers and a programmable total odometer for when your battery ran out. Cateye had already done the offroady thing by repackaging the old Mity 2 (a Mity mk1 but with average speed and clock) in a new curvaceous case and calling it the Tomo (CC-ST200), then giving it the thick cable treatment and calling it the Tomo XC (also CC-ST200), which later became the limited run, go-faster-striped Enduro (CC-ST250), which was the progenitor of the silver Enduro 2 that used a new case.
The Sigma was and still is a great computer, functionally, with dual tyre sizes, dual odometers with programmable total, cadence, trip time and total time and everything, but it was always rather unreliable. When did you last see a bike computer crash electronically? After the fourth or fifth lock-up I decided that it'd had long enough, so I replaced it with the Planet Bike computer.
Then there's the Astrale, that computer beloved of tandem and recumbent bike riders for whom very long sensor cables and cadence measurement are almost essential. This was my first one; I had another just like it on my Speedmachine recumbent. Still no programmable odometer, though; the Astrale was new for 1993, and was ultimately just a Cateye Kosmos (CC-ST300) with an extra contact for the cadence sensor, and the Kosmos was really just a Tomo with a more powerful chip (wheel size in millimetres, rather than centimetres). Still keeping track?
And to the Mity 8, which replaced my newer Micro Wireless! I expected the Mity 8 to be functionally identical to the Mity 3, just in a restyled case, but Cateye had to change the various modes, and made the adjust/reset button completely unintuitive.
The Micro Wireless I originally bought for my Brompton, because wires were an extra thing to worry about on a folding bike with hinges and clamps and cables going everywhere. It's actually a very nice little unit, with a backlight (though Sigma did that already) and a clever menu system for changing the settings. But it only transmits about two feet before going strange. Just about every bike computer these days has gone wireless. Cateye's original Micro, with twin rubber buttons, was the ancestor of the Astrale, but the later Micro Wireless doesn't do cadence. What goes around, comes around as they say, and I have acquired another Micro Wireless now, although it came with the bike.
Despite being a fan of the generally superb Cateye reliability (EL200 front light excepted) I was really impressed with the Planet Bike protegé 9.0 that a friend had. No buttons, big display, chunky cable, programmable odometer, dual tyre sizes...but I didn't like the white case or feel I needed a thermometer. So I bought the 8.0 instead: it matches my brushed aluminium RANS, and I like it a lot.
It's still amazing to think that a cycle computer, hardly the most computationally demanding accessory that was ever invented, can cost so much. Who really needs faux-calorie estimation, or altitude measurement, or carbon offset fluff, or estimated time to destination? If you want those things, buy a GPS and a calculator and do it properly.
And my favourite of the lot? Still the Mity 3. Cateye grouped all the functions on three levels, so normally you only cycled between trip time, trip distance and average speed (since current speed was always displayed). Trip distance 2, maximum speed and the clock all resided in level two, and the odometer was in level three. You could carry the unit in a pocket and not worry about it getting reset accidentally either, with the buttons needing a whole second's press. It was all beautifully convenient, and then they stopped making it.
Cray XMP Supercomputer Watermelon - Torley Edition
from Larissa Vacano, thank you!
Posted by Second Life Resident Torley Linden. Visit Here.
Before you get to understand concerning cloud computing OS you must know about web desktop. A web desktop or a virtual desktop is where you get all your hard disk, operating system and software applications on the service provider’s server (unlike the one you have at your home). Reading more at www.topthingz.com/top-list-of-cloud-computing-operating-s...
I'm getting a Lily Pad wearable open source arduino microcontroller in the mail soon and i can't wait to get going with it!
El cloud computing a nivel global
La industria del cloud computing es una de las más pujantes de los años recientes en el mercado tecnológico. La siguiente infografÃa muestra cuál es la situación global, señalando de qué paÃses son los mayores proveedores
As per Wikipedia “Cloud computing is location-independent computing, whereby shared servers provide resources, software, and data to computers and other devices on demand, as with the electricity grid. Cloud computing is a natural evolution of the widespread adoption of virtualization, service-oriented architecture and utility computing
Courtesy : nwlinux.com/moving-services-to-the-cloud-a-good-idea/
© István Pénzes.
Please NOTE and RESPECT the copyright.
19 May 2013
Polaroid 600SE
Mamiya 75mm 5.6
Fuji FP-100C
Canon Canoscan LiDE 700F
On Saturday, July 13, 2013, the Creative Computing Online Workshop facilitation team hosted a one-day symposium at the Harvard Graduate School of Education on the topic of creative computing with Scratch.
cc-symposium.eventbrite.com
scratch-ed.org
I will be returning to the high plateau this evening. Last night, I dream with the trip and in the dreams there was someone at my side all along the way. The usual parade of gadgets of this time of year makes me think about Cloud Computing as well.
Keywords: 2008, Business as Usual, Clear Sky, Clouds, Cloud Computing, Daylight Saving Time, December, Dream, High Plateau, Landscape, Photography, Typical Work Week, Summertime.
Hosted in collaboration with Google's CS4HS initiative, the MIT Creative Computing 2012 workshop was held at the MIT Media Lab, August 8-11, 2012.
Hosted in collaboration with Google's CS4HS initiative, the MIT Creative Computing 2012 workshop was held at the MIT Media Lab, August 8-11, 2012.
boredom (and lots of newegg orders) has led to this - me building 2 nostalgic computers and configuring a Dell server. I had to do something with all those WinXP licenses after all
next up - either a home theatre PC or an Intel Q6600 machine or maybe a Core i7 machine
For the techies, here's what we're looking at. (note: I don't do ANY pc gaming - the video cards are just whatever was readily available in AGP/PCI which is pretty rare these days)
Left to right:
Dell PowerEdge SC440 w/WinServer 2008 x64 Enterprise
Intel Dual Core Xeon 3040 1.86ghz 2mb cache 1066mhz FSB
4gb DDR2 667mhz ECC RAM
EVGA GeForce FX 5200 128mb PCI video card (onboard sucks)
WD 80gb 7.2krpm SATA main HD
Seagate 500gb 7.2krpm SATA secondary HD
Asus DVD-ROM
Pioneer 20x DVD/RW
Intel PRO/1000GT NIC (onboard sucks)
FrozenCPU.com modified Lian-Li PC-65B windowed case
The internals of this comp used to be in the case on the right - an Alienware 2001DV that cost $7k configured in 2001.
Intel D850GB motherboard
Intel Pentium 4 Socket 423 1.8ghz proc 256k cache w/400mhz FSB + ThermalTake indigo orb HSF
2gb Samsung Rambus RD800
Hitachi Deskstar 60gb 7.2krpm IDE main HD
WD 120gb 7.2krpm IDE secondary HD
XFX GeForce 6200 512mb AGP video card (only because my awesome red PCB Gainward GeForce 4 Ti4600 seems to be overheating a lot)
Koutech PCI to USB 2.0 card (in 2001, USB 2.0 wasn't around)
Lian-Li USB 2.0 3.5" card reader
Asus DVD-ROM
Pioneer 20x DVD/RW
Intel PRO/1000MT NIC
PC Power & Cooling Silencer 400W PSU
Alienware 2001DV
Asus P4P800-E Deluxe motherboard
Intel Socket 478 Pentium 4 3.2ghz w/HT, 512k cache, 800mhz FSB + ThermalTake Volcano 7+ copper HSF
3gb Corsair XMS3200 (cas latency 2)
Matrox Parhelia 512 128mb AGP video card (triple monitor support)
Seagate Barracuda 15krpm 18gb Ultra160 SCSI main drive
Seagate Barracuda 15krpm 36gb Ultra160 SCSI secondary drive
WD 120gb 7.2krpm IDE storage drive
Adaptec 29160N PCI SCSI controller
SoundBlaster Audigy Platinum 5.1 PCI sound card
Lian-Li USB 2.0 3.5" card reader
Asus DVD-ROM
Pioneer 20x DVD/RW
Intel PRO/1000GT NIC
Enermax 500W PSU
yea, retro computing. good times. note very little storage in all the comps since there's plenty of TBs worth of storage on my network
the Matrox Parhelia card powers a triple-monitor setup (new LCDs coming soon - those are circa 2001 once again) that looks like this