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Sophia robot is a socially humanoid robot developed by Hong Kong based company Hanson robotics .

It was first and on February 14 2016 and made her first public appearance at South by Southwest festival in mid March 2016 in Austin , Texas , U.K

Sophia is a humanoid robot made by a hong kong company hanson robotics. She made her first public appearance in mid-March 2016 in Austin, Texas, United States.

She has participated in many high-profile interviews. In October 2017, Sophia became a Saudi Arabian citizen, the first robot to receive citizenship of any country. In November 2017, Sophia was named the United Nations Development Programme's first ever Innovation Champion, and is the first non-human to be given any United Nation title.

Sophia has been interviewed in the same manner as a human, striking up conversations with hosts. Some replies have been nonsensical, while others have impressed interviewers

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unlike the threaded fasteners which are used to clamp the machine members, power screws are used to transmit power. common applications of power screws are: screw jacks: to lift weight. lead screw of lathe: for axial movement of tool and its precise positioning.