We reviewed the best free Adobe Illustrator alternatives for managing graphics files without a Creative Cloud subscription. We've rounded-up our top-rated choices for when you want to make the ...

Our physics expert picks his top-five equations, plus a scheme to supply US power needs with a bucket of baseballs. Thanks, ...

College of Optical, Mechanical and Electrical Engineering, Zhejiang A&F University, Lin’an 311300, China ...

To suppress the initial velocity errors, the improved vector observation with the vector subtraction improvements is investigated. With the vector subtraction improvements, the initial velocity errors ...