Abstract: I welcome you to the fourth issue of the IEEE Communications Surveys and Tutorials in 2021. This issue includes 23 papers covering different aspects of communication networks. In particular, ...

Tim Smith has 20+ years of experience in the financial services industry, both as a writer and as a trader. Amanda Jackson has expertise in personal finance, investing, and social services. She is a ...

Abstract: Semi-trailer frame performance has very important influence on stiffness and strength and fatigue resistance performance and vibration of the vehicle characteristics. A type semi-trailer ...

Kristina Zucchi is an investment analyst and financial writer with 15+ years of experience managing portfolios and conducting equity research. Charlene Rhinehart is a CPA , CFE, chair of an Illinois ...