The Chronicle's forecast calls for temperatures to rise into the mid-80s on Monday and Tuesday in San Francisco, with a chance at near-90. Phone apps show less extreme temperatures.

Calculating sales tax on prices is something you don't have to worry about if you use Excel. You can add a formula to the spreadsheet you use for invoices, bills of sale or quotes, and that's the end ...

Abstract: In the realm of modern radar electronic warfare, hostile jamming signals with time-variant polarization states pose a significant challenge to the performance of host radars. This article ...