The item is in a place in its existence where it is published. If something is in this place, it is printed and published.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
If you are looking for that article, it is printed in the May issue.
I believe there was an article published in Tofugu that explained the difference between the "wa" and "ga" particles.
Do you know anything about the Japanese first waka published in the Kojiki?