Ruby Group

27/03/2015

Check whether your email is tracked!

http://thehackernews.com/2015/03/email-tracking-software.html

Simplest Way to Check If Your Emails Are Being Tracked using Ugly Email Google Chrome Extension.

06/03/2015

Pichkari ki Dhar,
Gulal ki bauchar,
Apno ka pyar,
Yahi hai yaaron holi ka tyohar.

Happy Holi!!!!

03/03/2015

Interesting and Surprising as well!!

http://thehackernews.com/2015/02/vulnerable-operating-system.html

Linux and Mac OS X Are Most Vulnerable Operating System In 2014, not Windows.

06/01/2015

Ramanujan's Mock Modular Forms: Indian Mathematician's Dream Conjecture Finally Proven:

While on his death bed, the brilliant Indian mathematician Srinivasa Ramanujan cryptically wrote down functions he said came to him in dreams, with a hunch about how they behaved. Now 100 years later, researchers say they've proved he was right.

"We've solved the problems from his last mysterious letters. For people who work in this area of math, the problem has been open for 90 years," Emory University mathematician Ken Ono said.

Ramanujan, a self-taught mathematician born in a rural village in South India, spent so much time thinking about math that he flunked out of college in India twice, Ono said.

But he sent mathematicians letters describing his work, and one of the most preeminent ones, English mathematician G. H. Hardy, recognized the Indian boy's genius and invited him to Cambridge University in England to study. While there, Ramanujan published more than 30 papers and was inducted into the Royal Society.
"For a brief window of time, five years, he lit the world of math on fire," Ono told LiveScience.

But the cold weather eventually weakened Ramanujan's health, and when he was dying, he went home to India.

It was on his deathbed in 1920 that he described mysterious functions that mimicked theta functions, or modular forms, in a letter to Hardy. Like trigonometric functions such as sine and cosine, theta functions have a repeating pattern, but the pattern is much more complex and subtle than a simple sine curve. Theta functions are also "super-symmetric," meaning that if a specific type of mathematical function called a Moebius transformation is applied to the functions, they turn into themselves. Because they are so symmetric these theta functions are useful in many types of mathematics and physics, including string theory.

Ramanujan believed that 17 new functions he discovered were "mock modular forms" that looked like theta functions when written out as an infinte sum (their coefficients get large in the same way), but weren't super-symmetric. Ramanujan, a devout Hindu, thought these patterns were revealed to him by the goddess Namagiri.

Ramanujan died before he could prove his hunch. But more than 90 years later, Ono and his team proved that these functions indeed mimicked modular forms, but don't share their defining characteristics, such as super-symmetry.

The expansion of mock modular forms helps physicists compute the entropy, or level of disorder, of black holes.

In developing mock modular forms, Ramanujan was decades ahead of his time, Ono said; mathematicians only figured out which branch of math these equations belonged to in 2002.

"Ramanujan's legacy, it turns out, is much more important than anything anyone would have guessed when Ramanujan died," Ono said.

The findings were presented last month at the Ramanujan 125 conference at the University of Florida, ahead of the 125th anniversary of the mathematician's birth on Dec 22.

Sourcshttp://www.huffingtonpost.com/2012/12/27/ramanujans-mock-modular-forms_n_2371680.html?ir=India

04/11/2014

Digital Talking Head Named Zoe Can Express Human Emotions on Demand:

Cambridge University researchers have unveiled Zoe, a digital talking head that can express human emotions on demand. In the video provided Zoe rapidly changes emotions. Some of the emotions displayed include happy, sad, angry and afraid. The digital face was modelled on the face of British actress Zoe Lister.
The researchers say the framework behind Zoe would enable people to upload their own voices and then customize and personalize them. You could potentially have a digital avatar of yourself that could speak in your own voice and express emotions.

The researchers said in a statement, "If this can be developed, then a user could, for example, text the message 'I'm going to be late' and ask it to set the emotion to 'frustrated.' Their friend would then receive a 'face message' that looked like the sender, repeating the message in a frustrated way."

Professor Roberto Cipolla, from the Department of Engineering, University of Cambridge, says, "Present day human-computer interaction still revolves around typing at a keyboard or moving and pointing with a mouse. For a lot of people, that makes computers difficult and frustrating to use. In the future, we will be able to open up computing to far more people if they can speak and gesture to machines in a more natural way. That is why we created Zoe - a more expressive, emotionally responsive face that human beings can actually have a conversation with."

https://www.facebook.com/group.ruby

26/10/2014

New Solar Battery Could Generate Cheaper Clean Energy

A new kind of solar cell could store electrical energy without any help from traditional batteries, according to a new study.

Researchers at Ohio State University, in Columbus, have developed what they're calling the world's first solar battery — a hybrid device that combines the energy-capturing abilities of a solar cell with the energy-storing capabilities of a battery.

The new cell could lower the cost of harvesting renewable energy from the sun by as much as 25 percent, according to the researchers. [Top 10 Craziest Environmental Ideas]

The key to the device's success is a mesh solar panel that allows both sunlight and air to enter the cell. This porous material represents a departure from the solid semiconductor materials typically used to make solar cells. Allowing both light and oxygen into the cell enables the chemical reactions that typically occur inside a battery to occur within the solar cell itself.

"The state of the art is to use a solar panel to capture the light, and then use a cheap battery to store the energy," lead researcher Yiying Wu, a professor of chemistry at Ohio State, said in a statement. "We’ve integrated both functions into one device. Any time you can do that, you reduce cost."

But this innovative device can do more than just lower the cost of renewable energy, Wu said. It can also help solve a problem that's been plaguing scientists for years: how to store energy from the sun without losing a lot of that energyin the process.

A loss of electricity naturally occurs within any solar cell when the electrons released by the cell's semiconductor materials travel outside the cell and into a battery. Only about 80 percent of the electrons produced by solar cells successfully complete this journey. But the new solar cell is designed to ensure that 100 percent of the electrons captured find their way into a battery, the researchers said.

This high efficiency is possible because the conversion of sunlight to electric current isn't happening inside the solar cell before being transferred to the battery. Since the battery is located inside the cell, electrons are not able to escape, the researchers said.

The hybrid solar cell-battery is made up of three electrodes, or materials that conduct electricity. The first electrode is the mesh solar panel (which is really a collection of solar cells), the second electrode is made of a thin sheet of porous carbon and the third electrode is a sheet of lithium metal. Between these three electrodes is an electrolyte that can shuttle charges back and forth.

When the battery is in use — a phase known as "discharge" — the lithium metal and porous carbon electrodes are connected to an external circuit. Lithium ions can then travel to the carbon electrode and form lithium peroxide. This chemical process drives an external electrical current, Wu told Live Science in an email.

To recharge the solar battery, light hits the mesh panel and generates electron-hole pairs, which can carry an electrical charge. One of the most important features of the device is that it uses added molecules, known as redox shuttle additives, to transfer these charges from the mesh solar panel to the lithium electrode, where they cause the lithium peroxide to decompose into oxygen and lithium ions.

The oxygen is released out of the cell, but the lithium ions, as well as electrical charges, are stored inside the battery in the lithium electrode, Wu said.

“Basically, it's a breathing battery,” he said. “It breathes in air when it discharges, and breathes out when it charges.”

The researchers are still experimenting with other ways to improve the design of their solar battery, a project that is funded by the U.S. Department of Energy. The study outlining the new battery was published in the Oct. 3 issue of the journal Nature Communications.

21/10/2014

Light your lamp for brighter tomorrow,
Burst those firecrackers to drive away failure and sorrow,
Make Rangoli's for a colorful and vibrant life,
And hope that your year will be fun-filled and bright.

Wishes,
Ruby Group

20/10/2014

57 Fascinating Business Facts That Will Blow Your Mind!!!!!!
1. Ben & Jerry’s is owned by Unilever.
2. Wal-Mart averages a profit of $1.8 million every hour.
3. “Yahoo” is an acronym for “Yet Another Hierarchical Officious Oracle.”
4. Starbucks’ round tables were created specifically so customers would feel less alone.
5. Apple’s iPad retina display is actually manufactured by Samsung.
6. Dasani water is just purified tap water; it doesn’t come from a natural spring.
7. One in 10 Europeans are conceived in an Ikea bed.
8. Marvel Comics once owned the rights to the word “zombie.”
9. The red and white Coca-Cola logo is recognized by 94% of the world’s population.
10. The iPad 2 would cost $1,140 if it were made in America.
11. Taco Bell has proved to be a huge flop in Mexico, as Mexicans were confused by the Americanization of their traditional cuisine.
12. Adding /4 to the end of Facebook’s URL will take you to Mark Zuckerberg’s profile.
13. Cereal is the second-largest advertiser on television today, behind automobiles.
14. Google was originally called BackRub.
15. Pepsi got its name from the digestive enzyme pepsin.
16. U.S. corporations are reportedly hiding $1.6 trillion in profits offshore.
17. Amazon.com employees spend two days every two years working at the customer service desk — even the CEO — in order to help all workers understand the customer service process.
18. Speaking of Amazon, it also owns Zappos, ShopBop, Goodreads, and Audible.com
19. Everything you say to Siri is sent to Apple, analyzed, and stored.
20. Candy Crush brings in a reported $633,000 a day in revenue.
21. Samsung accounts for 20% of Korea’s gross domestic product.
22. Burt’s Bees is owned by Clorox.
23. The most productive day of the workweek is Tuesday.
24. Warner Music owns the copyrights to “Happy Birthday,” so it’s technically owed royalties every time you sing it to someone on their big day.
25. Changing the U.S. $1 bill for a $1 coin would save the U.S. $4.4 billion in 30 years.
26. The “new car smell” is composed of over 50 volatile organic compounds.
27. If Bill Gates were a country, he’d be the 37th richest on earth.
28. Sixty-four percent of consumers have made a purchase decision based on social media content.
29. McDonald’s first menu items were hot dogs, not hamburgers.
30. The actor who played the “Marlboro man” died of lung cancer.
31. More people in the world have mobile phones than toilets.
32. Starbucks spends more on health care insurance for its employees ($300 million) than on coffee beans.
33. If you have $10 in your pocket and no debts, you are wealthier than 25% of Americans.
34. Facebook is primarily blue because Mark Zuckerberg suffers from red-green color blindness.
35. Apple had a third founder, Ronald Wayne, who had a 10% stake in the company. He left the fledgling company after 12 days and forfeited his shares for $2,300 (about $9,600 today).
36. Robert Chesebrough, the inventor of Vaseline, ate a spoonful of the stuff every morning.
37. Seventy percent of small businesses are owned and operated by a single person.
38. Each week nearly one-third of the U.S. population visits a Walmart.
39. Victoria’s Secret is the most followed retailer on Instagram.
40. In iPhone ads, the time is always 9:42 a.m. or 9:41 a.m., because Apple events start at 9 a.m. and big product reveals generally happen 40 minutes into the presentation.
41. The Rubik’s cube is the best-selling product of all time. The iPhone is second.
42. Steve Jobs is credited as an executive producer on Toy Story.
43. One in eight American workers have been employed by McDonald’s.
44. In 2000, Coca-Cola launched a stealth campaign against water called “Just say no to H2O.”
45. The Volkswagen group owns Bentley, Bugatti, Lamborghini, Audi, Ducati, and Porsche.
46. Smoking near an Apple computer voids the warranty.
47. Twitter CEO Dick Costolo used to work as an improv comedian, including a stint at the legendary Second City in Chicago.
48. YouTube broadcasts about one-third of the U.S.’s multimedia entertainment.
49. The world’s 100 richest people earned enough money in 2012 to end global poverty four times over.
50. The average smartphone user checks Facebook 14 times a day.
51. More than 80 million “mouse ears” have been sold at Walt Disney World to date.
52. The Asia Tiger Funds’ stock symbol is GRR.
53. Gambling generates more revenue than movies, spectator sports, theme parks, cruise ships, and recorded music combined.
54. You can purchase large sheets of uncut U.S. currency through the mail.
55. Tom’s of Maine is owned by Colgate-Palmolive.
56. The “Mayfair” filter in Instagram generates the most likes.
57. A customer in a wheelchair successfully sued Chipotle in 2010, claiming its tall ordering counter denied him from seeing the “Chipotle experience.”

19/10/2014

A Solar Cell that Stores its Own Power!!

In the October 3, 2014 issue of the journal Nature Communications, the researchers report that they’ve succeeded in combining a battery and a solar cell into one hybrid device.

18/10/2014

My message, especially to young people is to have courage to think differently, courage to invent, to travel the unexplored path, courage to discover the impossible and to conquer the problems and succeed. These are great qualities that they must work towards. This is my message to the young people.
-A.P.J Abdul Kalam

15/10/2014

Happy Birthday Dr. APJ Abdul Kalam.