ASPEK PENINGKATAN KINERJA DAN KUALITAS KERJA PADA KARYAWAN PERUSAHAAN JASA ANGKUTAN LAUT (Studi kasus PT. Yicheng Logistics- Jakarta) : Aspects Of Improving Performance And Work Quality For Employees Of Sea Transport Services Companies (Case study PT. Yicheng Logistics- Jakarta). matemar. 2024;1(1):34-43. doi:10.59225/rpn7ne19