arXiv has almost 21,458 submissions about Optimization and Control (the subject matter asked about by user David Bernal), it also has:
Policy (partial quote):
"Why does arXiv moderate submissions?
arXiv is an openly accessible, moderated repository for scholarly papers in specific scientific disciplines. Material submitted to arXiv is expected to be of interest, relevance, and value to those disciplines. arXiv reserves the right to reject or reclassify any submission.
arXiv policies that could lead to the removal of a submission are:
- Unrefereeable content. arXiv only accepts submissions in the form of an article that would be refereeable by a conventional publication venue. Papers that do not contain original or substantive research, including undergraduate research, course projects, and research proposals, news, or information about political causes (even those with potential special interest to the academic community) may be removed. Papers that contain inflammatory or fictitious content, papers that use highly dramatic and misrepresentative titles/abstracts/introductions, or papers in need of significant review and revision may be removed.
Rights to submit material. Submissions to arXiv must be the author’s original work, and users must have the right to grant the rights contained in the selected license. Users must ensure the submission does not, to the best of their knowledge, infringe upon anyone's copyright. Users should not submit comments by referees. Users should not submit plagiarized material.
Excessive submission rate. Articles submitted to arXiv must be of refereeable quality, and there is a practical limit to the rate at which appropriate, independent submissions can be produced by any one person. Moderators may request that a particular author limit their submission rate if this author has a history of many submissions to inappropriate areas or of doubtful refereeability.
Who are arXiv moderators?
arXiv moderators are volunteers who are experts in their fields and in the types of submissions that are appropriate for their subject classifications. They evaluate based on the content of the submission and the policies of arXiv. Moderators consider the submissions to arXiv as privileged information, as they would with a paper being refereed for a journal."
arXiv moderators are approved by their discipline-level advisory committees and by arXiv staff. In addition, arXiv has links at the bottom of each paper which say "Which authors of this paper are endorsers?". That link has a link to: "Why isn't a Person 'Registered as an Author?'" and "The arXiv endorsement system":
"Why does arXiv require endorsement?
arXiv is distinct from the web as a whole, because arXiv contains exclusively scientific content. The endorsement system verifies that arXiv contributors belong to the scientific community in a fair and sustainable way that can scale with arXiv's future growth.
arXiv is an openly accessible, moderated repository for scholarly papers in specific scientific disciplines. Material submitted to arXiv is expected to be of interest, relevance, and value to those disciplines. Endorsement is a necessary but not sufficient condition to have papers accepted in arXiv; arXiv reserves the right to reject or reclassify any submission.
The endorsement system ensures that arXiv content is relevant to current research at much lower cost than conventional peer-reviewed journals, so we can continue to offer free access to the scientific community and the general public. Although our system may be imperfect, people who fail to get endorsement are still free to post articles on their (own) web site or to submit their publications to (other) peer-reviewed journals."
Elsevier - Elsevier has 140 years of experience in curation and verification. 75,382 editorial board members and more than 20,000 editors in academia and over 1.3m reviewers covering hundreds of disciplines.
Submission Guidelines and Quality Statement:
Elsevier receives over 40,000 annual submissions to our mathematical sciences journals. Of these, more than 10,000 articles are accepted for publication, resulting in an average acceptance rate of 25%.
We provide full text to frequently used mathematics services like MathSciNet®, ZentralBlatt, and NUMDAM. We link and produce metadata which is shared with the major abstracting and indexing services, and we improve search engine optimization, so that your research can be easily found.
Their "Decision Science" category indexes the following Operations Research journals, and other journals of publications related to Operations Research:
Subject - Title
Journals touching on Operations Research: