Abstract: In cognitive radio, most spatial spectrum sensing algorithms ignore the characteristic of the noncircular (NC) signals that are common in modern communication systems. In this letter, we ...

Using a relatively young theory, a team of mathematicians has started to answer questions whose roots lie at the very beginning of mathematics.

Question: Why is labeling students “high,” “medium,” and “low” problematic?

For Mr. Santos, math can also inspire ideas about structures that have already been built — a new way to see and appreciate the world. Inspired by this idea, The New York Times created a virtual tour ...

Department of Bridge Engineering, School of Transportation, Southeast University, Nanjing 210096, P. R. China Advanced Ocean Institute of Southeast University, Nantong 226010, P. R. China ...

Abstract: Angle measuring accuracy is the important technique index of the measuring angle device with CCD. The calibration methods for CCD camera have some disadvantages, such as the high ...