Quanta Magazine

Two Twisty Shapes Resolve a Centuries-Old Topology Puzzle

Alexander Bobenko has spent the past 20 years chewing on mathematical doughnuts. In the 2000s, he tried to prove that compact ...
archive

Introduction to numerical methods in differential equations

Ask the publishers to restore access to 500,000+ books. An icon used to represent a menu that can be toggled by interacting with this icon. A line drawing of the Internet Archive headquarters building ...
IEEE

Numerical Calculation of Diffusion Depth and Skin Depth Based on a GEMTIP Model in Electromagnetic Sounding Methods

Abstract: Electromagnetic (EM) sounding methods in the time and frequency domains are widely used in polymetallic ore exploration and can measure both EM induction and induced polarization (IP) ...
IEEE

Numerical Analysis of SGEMP Responses on Coaxial Cables Based on a New Mesh Tally in Monte-Carlo Methods

Abstract: System-generated electromagnetic pulse (SGEMP) that is generated by X-ray irradiation on coaxial cables would deteriorate sensitive electronic systems inside spacecraft, thereby affecting ...
C&EN

Generalized Global Self-Optimizing Control for Chemical Processes Part I. The Existence of Perfect Controlled Variables and Numerical Design Methods

Huzhou Key Laboratory of Intelligent Sensing and Optimal Control for Industrial Systems, School of Engineering, Huzhou University, Huzhou 313000, China Key Laboratory of Intelligent Manufacturing ...