Step-by-step instructions for creating PDFs from any file type, including methods for merging, compressing and password-protecting PDF documents securely.

Studying for exams often feels like trying to drink from a firehose — dense PDFs, sprawling lecture slides, and research papers piled high. What if you could turn any document into a focused set of ...

But static has always been the operative word. The PDF has been a destination and a final state. That was the case until ...

Unfortunately, satellite signals are weak and a strong interference signal can create a GNSS denial region. The solution ...

Andrews, I. (2025) Protector of the Gulf. Advances in Historical Studies, 14, 280-301. doi: 10.4236/ahs.2025.144016 .