This is the 3238th most frequent Japanese word.
学術
Academic or scholarly studies.
学術 in this sentence is related to the field of scholarship or academia, indicating the scientific or academic nature of the conference.
学術会議で最新の研究成果が発表されました。
At the scientific conference, the latest research findings were presented.
学術的 modifies the noun to signify that the books are of an academic or scholarly nature.
彼は学術的な書籍を執筆しています。
He is writing academic books.
学術 refers here to the domain of academic knowledge or the pursuit of scholarly studies.