ACORN-Edu: Deadline-Aware Prefetching for Learners With Intermittent Connectivity. - Divine Iloh; Ebuka Bertrand Osunwoke; Sadiq Adamu Abubakar; Grace Oku; Vennela Subramanyam; Rohit Kapa; Mabel Ogonna; Gayathri Balakumar (IEEE Access, 2026)