Chemical computers solve shapely puzzles

Computers these days take many different forms - desktops,laptops, tablets and smartphones-but all are based on shunting electrons through silicon. That's far tooordinary for Andrew Adamatzky,professor of unconventional computing at the University of West England,Bristol, who's attempting tobuild computers based on chemical reactions. Mixtures of certain chemicals form what's known as a Belousov- Zhabotinsky(BZ) reaction, which send out self-perpetuating waves that can be used tobuild logic gates and perform rudimentary computation. "Whenwaves collide they can either die or change direction, and we can interpretthis as computation," explainsAdamatsky. It's not an entirely new idea (see our feature on the "glooper computer") butnow Adamatzky and colleagueshave discovered that chemical computers can solve certain problems in computational geometry. These new computers are collections of smallchemical pouches called vesicles that can produce and combine BZ reactionwaves. A previous attempt used a hexagonal grid of vesicles but such aregular arrangement is difficult to build,so Adamatzky and colleagues wondered whether irregular vesicles could alsobe used for computation.They found that a vesicle computer could calculate the Voronoi diagram of a set oftwo-dimensional shapes - a taskwhich essentially involves working out which points on a flat sheet are closestto a particular shape. That might sound fairly arbitrary, but Voronoi diagrams have a wide range of applications, such as mapping the coverage of a network of mobile phone masts. They also used a vesicle computer tosolve a related problem, finding the topological skeleton of a shape. The results in this paper were actually simulated on a traditional computer, butAdamatzky says his team is now preparing another paper that details the sameresults achieved with real-world chemicals. The work is part of a wider effort toproduce chemical computers, which Adamatzky says could have a range ofapplications. "We could build computers that could be embedded in the humanbody," he says.

solution on DIGITAL SIGNAL PROCESSING

it may be useful for you if your subject is digital signal processing
click on link if u wanna download or read and also don't forget to comment
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What is e-Learning

If you could stop time and inexpensively bring together all of the people in your organization who need to learn and the resources to teach them, you would not need e-learning. In the real world, people have jobs to do and budgets are limited. Your learning program will need the power of technology to overcome the limitations of time, distance and resources.

You know that people learn in many different ways and at different times. To support these different learning needs, you will need different e-learning delivery methods. Additionally, you will need a way to develop and manage e-learning. Click on the following e-learning solutions to learn more.

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We can help you create an e-learning program or improve your existing e-learning program with our e-learning consulting services, e-learning software, e-learning authoring tools andlearning management system (LMS).

No single e-learning method is best for every learning need. You will most likely need to use several e-learning technologies as well as traditional learning methods. A blended learning program combines e-learning and traditional learning methods. Blended learning can provide the convenience, speed and cost effectiveness of e-learning with the personal touch of traditional learning.

exam dates for v semester electrical and electronics department

here is our exam dates for electrical and electronics department
1-power electronics-15/10/2010
2-transmission and distribution-18/10/2010
3-digital electronics-20/10/2010
4-control system-22/10/2010
5-linear integrated circuit-24/10/2010
6-object oriented programing structure-26/10/2010
as I heard that coll reopening date is jan6/2011(but it may change)so study and plane your journey according to dates.

QUESTION BANK OF 5TH SEMESTER FOR EEE(NEW)-2010

hi guys i got new question bank but there is not too much change it's almost same as older i gave
try this also and tell me what are and all changes write to on s21alam@gmail.com
download zip file

QUESTION BANK FOR 5th SEM EEE(2010)

Download fifth semester question bank
and also don't forget to comment on posts
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download and extract file to get in it's original form.if you have any problem regarding question bank
or any thing write to me on s21alam@gmail.com also you can call me(friends only allowed to call).
one more thing i wanted to share that i m going to broadcast my self on internet (i m working on it)shortly i will provide link to listen.
Follow me on twitter to get latest updates go to the following address is www.twitter.com/shah2050(copy link and paste in to you browser) 

PERIODICAL II QUESTIONS

Check out periodical 2 question and i always used to request you guys please comment on the posts using ur Google id but never i received any comment from ur side i m doing my job well but please say whether you like it or not
1.power electronics paper 
2.control system paper 
3.digital electronics paper 
4.linear integrated circuit 
5.transmission and distribution
6.object oriented programing