National security, unlocked. Each Thursday, host Mary Louise Kelly and a team of NPR correspondents discuss the biggest national security news of the week. With decades of reporting from battlefields ...

Computational models are mathematical models used to numerically study the behaviour of complex systems by means of a computer simulation. A computational model can be used to make predictions of the ...

Tim Smith has 20+ years of experience in the financial services industry, both as a writer and as a trader. Gordon Scott has been an active investor and technical analyst or 20+ years. He is a ...

Abstract: The fault diagnosis for urban rail power transformers is crucial for ensuring the safety and reliability of urban rail power systems. Voiceprint-based fault diagnosis methods have gradually ...

There’s nothing worse than starting a shower only to find that your feet are swimming in water minutes after you’ve hopped in. A clogged shower drain can wreak havoc in a number of ways, and keeping ...