Spending too much time on screens may cause emotional and behavioral problems in children – and those problems can lead to even more screen use, according to research published by the American ...

Humidifiers add moisture to the air. They can help people with dry skin, allergies, and respiratory problems. They may also help prevent influenza and reduce snoring, among other benefits.

The solution method for both problems is based on a transfer function approach which applies standard spectral factorization. Return difference relations are given which are extensions of the ...

Shanghai Institute of Applied Mathematics and Mechanics, Shanghai University, Shanghai 200072, P. R. China Ningbo Institute of Technology, Zhejiang University, Ningbo 315100, P. R. China Shanghai ...

System Upgrade on Tue, May 28th, 2024 at 2am (EDT) Existing users will be able to log into the site and access content. However, E-commerce and registration of new users may not be available for up to ...