"open lectures" is a correct and usable phrase in written English.
You can use it to refer to lectures or presentations that are open to the public and not restricted to certain people or organizations. For example, "The university offers a series of open lectures every month for anyone who is interested in learning more about the subject."
The Simons Institute Open Lectures are aimed at a broad scientific audience and specialist seminars associated with particular programs.
The open lectures by Robert Poor (and others?) are Wed Jan 5, Fri Jan 7, Wed Jan 12, and Fri Jan 14, from 10am-12pm in 2-105.
The Institute has published over 1,750 video recordings of workshop talks, Open Lectures, and outreach events on the YouTube channel, which launched in May 2013.
"Bijan was perhaps the last independent-minded analyst living in Tehran who continued to travel to Europe and the U.S. and give open lectures about Iran," said Karim Sadjadpour, an Iran expert with the Carnegie Endowment for International Peace.
The program includes business and academic days, which include: plenary sessions, open lectures and master classes from invited experts, more than 20 scientific thematic sections, a youth forum, a series of round tables and other special events.
Some business schools organize their entrepreneurship activities into a program or center, and they usually offer open lectures and workshops for students and local entrepreneurs.
Simons Institute Open Lecture: Clustering – Does Theory Help?
Thomas returned the compliment by delivering an open lecture at the institute.
Videos from the open lecture "The potentials and perils of e-policy", which took place at Comunitas.
Barton's last session, an open lecture attended by the participants as well as by ticket buyers, turned out to be as much an act of drama as an act of exposition.
Launching with the May program, the one hour, monthly HLX ("H-LEX") Open Lecture Series is an alumni engagement program that provides HLS alumni around the globe with an opportunity to hear from HLS faculty!
