ResearchGate for papers uploaded by independent researchers.

: This indicates the video codec used for compression (H.264/MPEG-4 AVC). It is the industry standard for balancing high visual quality with manageable file sizes.

TGx is one of the last major public torrent sites still operating after the downfall of KickassTorrents, RARBG, and ExtraTorrent. It functions as both an indexer and a encoding group in its own right, but here it simply indicates where the file was uploaded.