Chemists solve century-old mechanistic puzzle of copper catalyst

The Ullmann reaction is one of the oldest reactions in organometallic chemistry. It is one of the most widely used ...
Harvard Business Review

The Project Economy Has Arrived

Use these skills and tools to make the most of it. by Antonio Nieto-Rodriguez Quietly but powerfully, projects have displaced operations as the economic engine of our times. That shift has been a long ...
IEEE

Integrating Variable Reduction Strategy With Evolutionary Algorithms for Solving Nonlinear Equations Systems

Abstract: Nonlinear equations systems (NESs) are widely used in real-world problems and they are difficult to solve due to their nonlinearity and multiple roots. Evolutionary algorithms (EAs) are one ...
NPR

33 million voters have been run through a Trump administration citizenship check

Tens of millions of voters have had their citizenship status and other information checked using a revamped tool offered by the Trump administration, even as many states — led by both Democrats and ...
IEEE

Solving Power System Differential Algebraic Equations Using Differential Transformation

Abstract: This paper proposes a novel non-iterative method to solve power system differential algebraic equations (DAEs) using the differential transformation, which is a mathematical tool able to ...