Comparison Instructions

IN1 and IN2 are compared according to the type of comparison you choose:

==     IN1  is equal to  IN2

                                                                              <>     IN1  is not equal to  IN2

 

 >       IN1  is greater than  IN2

<       IN1  is less than  IN2

>=     IN1  is greater than  or equal to  IN2

<=     IN1  is less than  or  equal to  IN2

Tutorial - Electric Spray Paint Could Turn Any Surface Into a Battery

Howz that
Paint-on Battery Rice University..:

Lithium-ion batteries work by stacking active ingredients in layers. In your laptop and phone, the layers are stacked into a block, but a new process could make that seem quaint: spray-paint the necessary layers onto any surface like paint, to make an instant battery anywhere.
Scientists at Rice University tested out different paints until they found a set that could work as the necessary components for a lithium-ion battery: two current collectors, a cathode, an anode, and a polymer separator. The layers can be airbrushed on and the resulting battery is fully rechargeable. To test it out, researchers put it on steel, glass, ceramic bathroom tiles, and (why not?) a beer stein. Batteries on the bathroom tiles wereable to send out a steady 2.4 volts--enough to power light-emitting diodes that spelledout "Rice" for a full six hours.

Engineering - Did you know

The Internet is the fastest- growing communications tool ever. It took radio broadcasters 38 years to reach an audience of 50 million, television 13 years, and the Internet just 4 years.\

 

Tutorial - What's in a username?

Your e-mail address 'can reveal your personality'

Think twice before you pick an email address -- it can reveal your personality.

Researchers at the University of Leipzig in Germany have carried out a study and found that an email address may speak volumes about the character of the person who created the unique online identification.

According to lead researcher Mitja Back, even the thinnest slice of communication via the world wide web - the mere e-mail address -- contains valid information about the personality of its owner.

In their study, the researchers asked a panel of 100 students to guess the personalities of 600 young adults simply by looking at their e-mail addresses.

The panel's guesses agreed mostly with a personality survey the teenagers had completed when it came to qualities like openness, conscientiousness and narcissism, and diverged most on the trait of extroversion.

Addresses that gave away personality often contained full stops, numbers or a name that was obviously not genuine, the researchers found.

Level of accuracy was explained using lens model analyses -- the students made broad use of perceivable e-mail address features in their personality judgements, features were slightly valid and the observers were sensitive to subtle differences in validity between cues.

The study has been published in the latest edition of the Journal of Research in Personality.