Monday, 12 August 2013

BSNL to set up defence telecom network by July 2015


BSNL to set up defence telecom network by July 2015


State-run telecom operator Bharat Sanchar Nigam Limited (BSNL) is reportedly working to set up an alternative communication network for exclusive use by the Indian defence sector. BSNL is supposed to hand over the network by July 2015. After setting up of the new network, the defence sector is likely to release the 150 MHz of spectrum in frequency range of 1700 MHz to 2000 MHz. .
According to BSNL Chairman and Managing Director RK Upadhyay, the new network uses optical fibre and satellite links and is "is targeted to be completed in three years from Cabinet approval and this works out to July 2015. It's a tight schedule, but BSNL is making all efforts to meet it."
BSNL is likely to begin rolling out the optical fibre cable network across 57,000 kilometres by January 2014. The telco has issued tenders for a 3,000 kilometre OFC network for the navy, which is likely to be ready by the end of next year. The telco plans to issue tenders for satellite network, transmission, microwave radio and networking equipment.
The The Cabinet Committee on Infrastructure had given its nod to Rs 13,334 crore for the defence network project in July 2012. A Times of India report points out the actual valuation of the defence spectrum may differ from the estimate worth of Rs 3.6 lakh crore, based on the market dynamics and government policy.
The recent 2G spectrum auction in 1800 MHz band saw the final price of 5MHz for pan-India was at around Rs. 12,000 crore. Going by this benchmark, the value of 150 Mhz of defence spectrum is estimated at about Rs 3.6 lakh crore.
Source: TOI

Optimizing land use classification using decision tree approaches

                             




  Optimizing land use classification using decision tree approaches
Vaibhav Walia+ under guidance of DR. Sameer Saran
 Indian Institute of remote sensing (NRSA), Dehradun (UA)-248 001
+ Manipal institute of technology, Manipal (KA)



Abstract: Supervised classification is one of the important tasks in remote sensing image interpretation, in which the image pixels are classified to various predefined land use/land cover classes based on the spectral reflectance values in different bands. In reality some classes may have very close spectral reflectance values that overlap in feature space. This produces spectral confusion among the classes and results in inaccurate classified images. To remove such spectral confusion one requires extra spectral and spatial knowledge. This report presents a decision tree classifier approach to extract knowledge from spatial data in form of classification rules using Gini Index and Shannon Entropy (Shannon and Weaver, 1949) to evaluate splits. This report also features calculation of optimal dataset size required for rule generation, in order to avoid redundant Input/output and processing.

*Challenges:

·         Improving land use classification methods to achieve better classification
·         Optimising the size of training dataset needed to generate classification rules
·         Developing an application to generate classification rules, given a particular dataset and information about the attributes


*Solutions:

  •          Better classification was achieved by :

                               I.            using Decision tree algorithm instead of classical approaches such as MLC
                             II.            using “Gini Index” as the attribute selection criteria when “Information gain” fails

  •        Optimum dataset size was found by extracting and comparing decision rules for increasing dataset sizes of the same dataset.

 Example: ‘X’ tuples are read and converted to rules in the first pass, similarly ‘X + jump’ tuples are read and converted to rules in the second pass, the resulting rules are compared and the procedure is repeated for at least another ‘width’ tuples, where ‘jump’ and ‘width’ are user defined variables. If the resulting rules are same throughout the ‘width’ then ‘no of tuples read minus width’ is the optimum dataset size required for rule generation.


  • The decision tree algorithm was implemented using C++, Nokia/trolltech‘s Qt framework for the gui and “qcoustomplot” an open source library, which was used for plotting graphs


Microsoft ditching points for Xbox Live with next system update


Microsoft ditching points for Xbox Live with next system update (original article)


Earlier this year, Microsoft had made its intentions of phasing out the wretched Points system on Xbox Live rather clear, but what it didn’t outline was the timeline. Larry Hryb, Director of Programming for Xbox Live, has just announced that come the next system update, the MS Points will be eliminated.
Microsoft had said earlier this year during the announcement of the Xbox One that the company will also be doing away with the wretched MS Points system, which had become the cause of frustration for many gamers. The issue was not just with the arbitrary conversion of real money to Points, but also when translating different currencies into Points. Since Points could only be bought in USD equivalents, international customers ended up paying more for their Points than the US counterparts due to various currency conversion factors.
Microsoft plans on implementing with the next system update for the Xbox 360 will be a local currency purchase system, where you will be able to purchase content in your local currency, hence saving the cost of currency conversion and various taxes associated with it. It would seem that the new purchase system has been in testing with the current Xbox Live Beta Dashboard and if the program completes successfully, the ability to purchase content in local currencies will also make it to your console.
However, if you’re one of those who has a lot of points accrued, or own those Microsoft Points gift card, the Redmond Giant isn’t willing to hang you out to dry. Here’s what Major Nelson had to say about the matter:
“Don’t worry about your Microsoft Points Cards either. We’ll continue to accept purchased Microsoft Points Cards and codes until further notice, and we’ll add to your account an amount of local currency equal to or greater than the Marketplace value of those points. In addition, we know you’ve worked hard on your Microsoft Points earned through Xbox Live Rewards. These will remain in your Xbox Live account and transition to local currency with the rest of your Microsoft Points.”

The week in Tech: 5 must-know things

The week in Tech: 5 must-know things


Out with the old, in with the new. Yahoo is changing its logo for the first time in its 18-year history next month. A company executive told USA TODAY's Jon Swartz that Yahoo may change its typeface, its trademark color (purple) and its exclamation point in the rebranding process. But Yahoo commercials will still have the company's distinctive yodel.
Yahoo will keep things interesting by unveiling a new logo every day, for 30 days, until the real logo is introduced on Sept. 4.
Last week we told you all about Motorola's new Moto X smartphone and its cool new features. But how does it stack up against its other smartphone competitors?
USA TODAY's Ed Baig took the Moto X out for a test run earlier this week and gave us a first look at the pros and cons of the new phone:
Good: Driving Mode for voice-controlled texts and calls is "maybe the coolest feature." Another "headline feature," Touchless Control, lets you use your voice to make calls, set alarms and more.
Not so good: The phone has "rather middling specs" and a 4.7-inch screen that's "not the sharpest screen out there."
Should you get it? Baig says the Moto X is "a solid phone that I can absolutely recommend."
Don't let your clumsy fingers drop another call. LG unveiled a new smartphone this week that changes the way you grab your phone to answer calls.
The G2 comes with volume and power controls on the back of the device, not on the side or the top where these smartphone buttons usually reside.
Another new feature on the G2 is somewhat of a throwback: Users can pick up the phone to answer incoming calls, much as they would on a corded landline telephone.
LG's new smartphone will be available sometime this fall, but the company has yet to release pricing or carrier information.
If you're the average person, you can't afford a movie theater in your home. But why not try to get theater-quality sound for your TV?
Sony gave Ed Baig a sneak peek of the new HT-ST7 sound bar earlier this week in New York. The bar delivers surround sound "far superior to the sound that typically emerges from HDTV speakers" in a compact unit that you can position in front of your flat-panel TV. The bar has nine independent speakers, seven amplifiers and seven inputs for connecting the device to your TV.
But theater-quality sound doesn't come cheap. Sony's starting price for the sound bar is $1,299.
Well-preserved ruins are a rare, but welcome, find for archaeologists. An international team announced earlier this week that they have discovered a "stunning" 30-foot-long stucco wall in Guatemala beneath a Maya pyramid.
The frieze depicts three men crowning a new ruler at the Maya site Holmul around the year 590. The sculpture is painted in bright colors of red, blue, yellow and green.
Make sure you check out the pictures at the National Geographic website.