Astronomers are puzzled, and that’s putting it mildly. A strange pattern of pulses, repeating like clockwork, has been detected from 3I/ATLAS, an interstellar object cruising through our Solar System.

Abstract: For any alphabet, consider sequences that both contain no consecutive repeated symbols and have the same number of occurrences of symbols from a specified subset of the alphabet. These ...

Abstract: To protect the security of image information in storage or transmission. We present a color image encryption algorithm based on the image features, which are unique to each other. Firstly, ...