College & Research Libraries has released a preprint of "Do Open Access Electronic Theses and Dissertations Diminish Publishing Opportunities in the Sciences?"
Here's an excerpt:
In academia, there is a growing acceptance of sharing the final electronic version of graduate work, such as a thesis or dissertation, in an online university repository. Though previous studies have shown that journal editors are willing to consider manuscripts derived from electronic theses and dissertations (ETDs), faculty advisors and graduate students continue to raise concerns that online discoverability of ETDs negatively impact future opportunities to publish those findings. The current study investigated science journal policies on open access ETDs and found that more than half of the science journals contacted (51.4%) reported that manuscripts derived from openly accessible ETDs are welcome for submission and an additional 29.1% would accept revised ETDs under certain conditions.