It is best to consult with OTMC before any publication is submitted, if there might be a possibility a valuable invention being disclosed by it. OTMC can file a provisional patent to protect the possible invention with 30 days notice before the publication submission.
Researchers are generally free to publish or make public disclosures of their findings at any time, in any media of their choice, limited only by contractual obligations.
There is little incentive to "publish ahead" instead of filing a patent application. The prior law allowed a one-year grace period after presenting or publishing your work to file a US patent application. However, because other countries did not have (and still do not have) similar provisions, such a publication in advance of filing any patent application would result in forfeiture of patent rights everywhere except the US. That forfeiture aspect is still true. The AIA left the grace period intact, so anyone who is only interested in a US patent can publish first and file later, as long as the filing happens within 1 year of publication. In most cases, filing a U.S. patent application before the first public disclosure will preserve the right to file outside the U.S. for one year at which time an application has to have been filed under Patent Cooperation Treaty (PCT).
Publishing puts others on notice about what you're doing, and it will prevent others from patenting the same idea. You'll still be entitled to the U.S. patent as long as you file within a year. Even if you publish, others may not be able to learn for a while whether or not you also filed a patent application. However, your early publication gives others a chance to improve on your disclosure and file their own patent applications on the improvement, perhaps very soon after seeing your publication. They may be entitled to a patent on the improvement if it's a good enough twist on your original idea.