Tuesday, May 17, 2011

Brain Fingerprinting

Brain Fingerprinting is a forensic science technique that uses electroencephalography to determine whether specific information is stored in a subject’s brain. It does this by measuring electrical brainwave responses to words, phrases, or pictures that are presented on a screen.
The technique uses the well known fact that an electrical signal known as P300 is emitted from an individual's brain beginning approximately 300 milliseconds after it is confronted with a stimulus of special significance. The application of this in brain fingerprinting is to detect the P300 as a response to stimuli related to the crime or other investigated situation, e.g., a murder weapon, victim's face, or knowledge of the internal workings of a terrorist cell. The person to be tested wears a special headband with electronic sensors that measure the EEG from several locations on the scalp.
Since brain fingerprinting uses cognitive brain responses and is fundamentally different from the polygraph (lie-detector), which measures emotion-based physiological signals such as heart rate, sweating, and blood pressure.

Thursday, May 5, 2011

Orkut Buyukkokten

Orkut Buyukkokten is a software engineer who developed the social networking service Orkut
Originally from Konya Büyükkökten obtained a B.Sc. degree in Computer Engineering and Information Science from Bilkent University in Ankara, and earned a Ph.D. in Computer Science from Stanford University. His research at Stanford focused on Web search and efficient PDA usage.
He developed Orkut.com as a 20% independent project while working In late June 2004. Orkut is a social networking website that is owned and operated by Google Inc. The service is designed to help users meet new friends and maintain existing relationships. The website is named after its creator, Orkut Büyükkökten. Although Orkut is less popular in the United States than competitors Facebook and MySpace, it is one of the most visited websites in India and Brazil, as of April 2010, 48.0% of Orkut's users are from Brazil, followed by India with 39.2% and United States with 2.2%.