PERAN DOSEN PEMBIMBING AKADEMIK DALAM MENINGKATKAN SEMANGAT BELAJAR DI LINGKUNGAN AKADEMI MARITIM NASIONAL JAKARTA RAYA : The Role Of Academic Supervisors In Increasing The Spirit Of Learning In The National Maritime Academy Environment, Jakarta Raya. matemar. 2024;1(2). doi:10.59225/sbx4bk49