Complex sentence: It has been watchful, for sixteen years, for the best use of the human and material means granted to higher education and scientific research institutions it supervises to improve their opening on the social, cultural and economic environments.
Split into simpler sentences: It has been watchful, for sixteen years, for the best use of the human and material means granted to higher education and scientific research institutions. It supervises to improve their opening on the social, cultural and economic environments.