Chinese Robo to moon…!

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Few photos for your thirst..!! 🙂

china moon rover robot

china moon rover robot

china moon rover robot

china moon rover robot

china moon rover robot

More info: IEEE Spectrum

Now even Robots can talk with each other…!!!

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If you’ve always feared that robots would one day start talking to each other and plotting the demise of the human race, you can start getting a bit scared right now. The folks over at the University of Queensland have come up with a way to get robots to communicate with each other. Instead of giving them a fixed language i.e. something we already know like English, researchers have given the robots the ability to come up with their own words to describe the situation it is in.  The robots generate “words” from images of what they see with their onboard cameras.

Called Lingodroids, these robots are designed to work together in a team to map out the area they are in. Whenever a robot encounters a new area, they store its location and give it a name using a word generated from its own language. The location and name is then shared with other Lingodroids in the area. The robots then add those discovered areas onto their own maps and are able to identify it by name. The robots can even travel to that particular location if given the instructions to from other robots.

The single task they have to complete is to build a map of the world they are capable of travelling around on their three wheels. In order to do that they have a camera, range finder and sonar, and audio capabilities for capturing (microphone) and sharing (speaker) information.

Whenever a Lingodroid encounters some new area they map it using SLAM (Simultaneous Localisation and Mapping) which involves making it memorable using a grid, landmark, and topological combination that remains unique.

Once SLAM has been used to log an area the robot decides on a word to represent it made up from a list of sylabbles it has in memory. That word is then passed along to the other robots. All the robots then use that word to represent a specific place with reinforcement happening through game playing where one robot says a known word and the others navigate to it. That word is linked to the unique SLAM area marker formed by the Lingodroid such as the examples given below:

Lingodroids

It’s very basic stuff in terms of communication, but it soon develops into a map with keywords the robots can say and the others can decide to travel to, or at least add to their own internal maps. It even extends to areas that cannot be accessed, and the robots can still give those areas a name.

The next stage is to increase the spatial intelligence of the robots by allowing them to learn and give directions to specific places. If that works we’ll have robots acting like a GPS, but in a language we don’t understand.

While right now, it’s only the ability to name locations, but we can imagine future where robots develop the language and come up with words for more functions or actions..!! Hope it will be soon :):)

for more: IEEE Spectrum

Advanced Google Search Tips…

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Customize Google

Google is indisputedbly the best search engine out there on the Internet, however there are a few ways by which you can customize Google and make it even better.

1. OptimizeGoogle:

Using OptimizeGoogle, you can get rid of text ads from Google search results, add links from about 10 other search engines, add position counter, product results and more. You can even filter your search results to see dead websites (using WayBack Machine) and remove click tracking so that you can search anonymously. Here is a list of some of the other useful features of this plugin.

1. Use Google suggest (get word suggestion while typing)

2. Add more security by using https wherever necessary

3. Filter spammy websites from search results page

4. Option to remove SideWiki

5. Add links to bookmark your favorite result

6. Add links to other news and product search sites

To install the plugin, just visit the OptimizeGoogle page from your Firefox browser and click on the Download button. Once installed, you can enable or disable the customization options from the Tools -> OptimizeGoogle Options.

After you customize Google to improve the search results, how about adding a feature that provides a way to preview the website in the search results itself? Here is a miracle Firefox extension to this job for us.

2.  SearchPreview:

SearchPreview (formerly GooglePreview) will insert thumbnail view of the webpage into the Google search results page itself so that you can take the guess work out of clicking a link. Just install the plugin, reload Firefox and you will have the SearchPreview at work. You can install this plugin from the following link.

SearchPreview Download

OptimizeGoogle and SearchPreview have made our search results smarter and faster. Now how about safer? Well you have another Firefox plugin to make your search results safer as well. Here we go.

3. McAfee SiteAdvisor:

This is a free browser plugin that gives safety advice about websites on the search results page before you actually click on the links. After you install the SiteAdvisor plugin, you will see a small rating icon next to each search result which will alert you about suspecious/risky websites and help you find safer alternatives. These ratings are derived based on various tests conducted by McAfee.

Based on the quality of links, SiteAdvisor may display Green, Yellow, Red or Grey icon next to the search results. Green means that the link is completely safe, Yellow means that there is a minor risk, Red means a mojor risk and Grey means that the site is not yet rated. These results will guide you to Web safety.

SiteAdvisor works on both Internet Explorer and Firefox which you can download from the following link:

McAfee SiteAdvisor Download

Custom Google Search Results

SEARCH Techniques:

1.Google for getting Resources:

Using Google it is possible to gain access to an email repository containing CV of hundreds of people which were created when applying for their jobs. The documents containing their Address, Phone, DOB, Education, Work experience etc. can be found just in seconds.

intitle:”curriculum vitae” “phone * * *” “address *” “e-mail”

You can gain access to a list of .xls (excel documents) which contain contact details including email addresses of large group of people. To do so type the following search query and hit enter.

filetype:xls inurl:”email.xls”

Also it’s possible to gain access to documents potentially containing information on bank accounts, financial summaries and credit card numbers using the following search query

intitle:index.of finances.xls

2. Using Google to access Free Stuffs

 Ever wondered how to get free music or ebooks. Well here is a way to do that. To download free music just enter the following query on google search box and hit enter.
“?intitle:index.of?mp3 akon“

Now you’ll gain access to the whole index of akon album where in you can download the songs of your choice. Instead of eminem you can subtitute the name of your favorite album. To search for the ebooks all you have to do is replace “akon” with your favorite book name. Also replace “mp3″ with “pdf” or “zip” or “rar”.

Google Search:-[ intitle: ]

The “intitle:” syntax helps Google restrict the search results to pages containing that word in the title. For example, “intitle: login password” (without quotes) will return links to those pages that has the word “login” in their title, and the word “password” anywhere in the page.

Similarly, if one has to query for more than one word in the page title then in that case “allintitle:” can be used instead of “intitle” to get the list of pages containing all those words in its title. For example using “intitle: login intitle: password” is same as querying “allintitle: login password”.

Google Search:-[ inurl: ]

The “inurl:” syntax restricts the search results to those URLs containing the search keyword. For example: “inurl: passwd” (without quotes) will return only links to those pages that have “passwd” in the URL.

Similarly, if one has to query for more than one word in an URL then in that case “allinurl:” can be used instead of “inurl” to get the list of URLs containing all those search keywords in it. For example: “allinurl: etc/passwd“ will look for the URLs containing “etc” and “passwd”. The slash (“/”) between the words will be ignored by Google.

World’s First Hack free software!!!

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World’s ‘first hack-free’ software developed. Scientists have developed what they claim is the world’s first hack-free software which can protect systems from failure or malicious attacks.The ‘seL4’ micro kernel has been developed by a team led by Australia’s ICT Research Center of Excellence’s spin out company — Open Kernel Labs(OK Labs). It is a small operating system kernel which regulates access to a computer’s hardware.

Its unique feature is that it has been mathematically proven to operate correctly, enabling it to separate trusted from untrusted software, protecting critical services from a failure or a malicious attack, say the scientists.

In future applications, seL4 could ensure that trusted financial transaction software from secure sources like banks or stock exchanges can operate securely on a customer’s mobile phone alongside “untrusted” software, such as games downloaded from the Internet, according to its developers.

It could also provide a secure and reliable environment for mission-critical defense data, operating on the same platform as everyday applications like email. Or, it could protect the life-supporting functions of an implanted medical device, such as a pacemaker, from hacking, they say.

“Our seL4 micro kernel is the only operating system kernel in existence whose source code has been mathematically proven to implement its specification correctly. Under the assumptions of the proof, the seL4 kernel for ARM11 will always do precisely what its specification says it will do,” lead scientist Gerwin Klein said.

Can we see sound and hear electromagnetic waves??!!

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Suddenly this question came to mind. I was thinking, since both are waves, both have frequency and wavelength, But why can’t we see sound waves and hear to light rays?!! 😛 😀

Later i came to know reasonably good the answer for second one. No We can’t hear light waves. Sound waves are the waves which propagate through the medium through vibrations. Where as Electromagnetic waves doesn’t make any particle to vibrate or shake…! And Hence We Can’t.

Is it possible to have a Light Absorbing Torch?

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In this universe, we believe everything is made in pair. Or we think so.. Main reason for this is our assumption, that is Nature loves symmetry. From Nearly a month back (or more than that) im having a query within myself. Do we have in this world or Can we make something which performs reverse action of a torch..?  That is absorbing a portion of light where we focus on..? (For my convenience let me call it as a Light Absorbing Torch)

Photo of a cloud illuminated by sunlight.

At least can we make the brightness of the region where we focus the Light absorbing torch, a little low compared to earlier?!

Any answer Guys?!

…. ””