With the advancement of traveling-wave ultrasonic motors and their increasing use in robotics, aerospace, and high-precision instruments, improving their output characteristics and system stability ...

In order to explore the optimal parameter range for the surface machining of ultrasonic vibratory extrusion shaft artifacts, a surface property prediction model and a multi-objective optimization ...

California Gov. Gavin Newsom has signed a budget that pares back a number of progressive priorities to close a $12-billion deficit.

Secretary of State Marco Rubio has called the agency “bloated,” yet as violence spiked in the Middle East, staff say they’ve been asked to work extra hours.

BRUSSELS — EU leaders asked the bloc’s top diplomat to develop a series of proposals for cutting back cooperation with Israel to encourage it to live up to its humanitarian obligations, according to ...

It’s still too soon for the Federal Reserve to consider lowering interest rates, Chair Jerome Powell said Tuesday.