Fullchis Nurtjahjani; Galih Putra Riatma; Kadek Suarjuna Batubulan; Novitasari, A. F. DEVELOPMENT OF A PRESENCE SYSTEM WITH FACE RECOGNITION INTEGRATED WITH ONLINE APPLICATIONS USING DEEP LEARNING METHODS TO EXPAND THE TEACHING AND LEARNING PROCESS AT SMKN 9 MALANG. IJERLAS 2024, 4, 1505-1512.