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, ...

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If you work with PDF files regularly then a PDF editor is an indispensable tool. Whether it’s part of your job, you manage PDF files for your own personal use, or you just need to complete a one-off ...

Thinking about learning Python? It’s a pretty popular language these days, and for good reason. It’s not super complicated, which is nice if you’re just starting out. We’ve put together a guide that ...

One of the easiest ways to save a webpage is to save it as a PDF. Converting a webpage into PDF makes important documents immediately accessible, like receipts or any page that you may not be able to ...

Synthetic Aperture Radar (SAR) has been widely used for Earth remote sensing for more than 30 years. It provides high-resolution, day-and-night and weather-independent images for a multitude of ...

The best free PDF reader apps do more than just act as a PDF viewer - any modern browser can do that. What I'm looking for is tools that go beyond that, offering commenting, collaboration, and ...

When saving an Inkscape document with text as a PDF file, the resulting PDF file is broken and cannot be opened by a PDF viewer. The issue is not reproducible with all fonts: It occurs (so far) only ...

We list the best free PDF to Word converters, to make it simple and easy to convert files from .pdf to .docx format. Most PDF conversion tools aren’t limited to one filetype - they let you convert ...

Can you chip in? This year we’ve reached an extraordinary milestone: 1 trillion web pages preserved on the Wayback Machine. This makes us the largest public repository of internet history ever ...