I believe this happen to almost all the member. The only way to keep your article being viewed is that you need to make your article interesting and being views by many member at the first 36hours
I don't get much traffic from Ezine, but I noticed that articles rank pretty high in Google which makes me think about it.
lots of people sending articles on ezine, no wonder why it is hard for you to get visitors from them. your articles maybe have some related content. there is always a competition.