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, ...

Berry Picking is a Wish Sidequest in Hollow Knight: Silksong that is given to you the first time you talk to the Druid in Mosshome. To find them, you must acquire the Silk Spear ability to destroy the ...

Abstract: First arrival time picking is one of the critical processing steps of acoustic emission (AE)/microseismic (MS) monitoring for studying rock fracture processes. Because of massive monitoring ...

Give the vehicle a thorough inspection before you drive it off the dealer's lot. Any problems should be addressed right away. Don't consider the car-buying process over until you've checked out the ...

Anna Attkisson is a full-time Senior Editorial Director for Investopedia, overseeing content strategy and operations. Anna has spent 20 years crafting content around highly complex topics and ...

James Chen, CMT is an expert trader, investment adviser, and global market strategist. Thomas J. Brock is a CFA and CPA with more than 20 years of experience in various areas including investing, ...

Finger locking is a common sign of trigger finger, caused by a swollen tendon sheath. Trigger finger symptoms might start with a painless click when moving the finger or thumb. Risk factors for ...