Ultramassive black holes and their galaxies: A matter of scale

Nearly every galaxy has a supermassive black hole in its core. Whether the black hole forms first and then the galaxy around ...

XRISM gives sharpest-ever glimpse at growth of a rapidly-spinning black hole

Astronomers have obtained the sharpest-ever X-ray spectrum of an iconic active galaxy, providing the most accurate, precise ...
IEEE

A False Data Injection Attack Detection Strategy for Unbalanced Distribution Networks State Estimation

Abstract: With the advance in communication facilities and information technologies, the state estimation (SE) of distribution networks is subject to intensified cybersecurity threats caused by false ...
IEEE

Multi-Class Imbalance Classification Based on Data Distribution and Adaptive Weights

Abstract: AdaBoost approaches have been used for multi-class imbalance classification with an imbalance ratio measured on class sizes. However, such ratio would assign each training sample of the same ...