BBC

Ratio, proportion and rates of change

Revise how to work out equivalent ratios and simplify ratios by dividing both sides by the highest common factor. Test yourself with practice questions and a game. NEW: Ratio and fractions, and ...
Investopedia

Quantitative Investment Strategies: Models, Algorithms, and Techniques

Michael Schmidt, CFA, is a staff member of FINRA's Dispute Resolution Board with 20+ years of experience in the financial market. Doretha Clemons, Ph.D., MBA, PMP, has been a corporate IT executive ...
Investopedia

Gross Domestic Product (GDP) Formula and How to Use It

Find out how GDP can help measure the health of a country’s economy Michael Boyle is an experienced financial professional with more than 10 years working with financial planning, derivatives, ...
IEEE

Research and Implementation of Intelligent Control Algorithm for Metro Trains Energy-saving Operation under Complex Operating Conditions

Abstract: Taking the complex routes of actual metro operations as the research subject, the specific operational patterns of trains to construct an energy-saving optimized control model for train ...
IEEE

Range-Based Multi-Robot Integrity Monitoring For Cyberattacks and Faults: An Anchor-Free Approach

Abstract: Coordination of multi-robot systems (MRSs) relies on efficient sensing and reliable communication among the robots. However, the sensors and communication channels of these robots are often ...