Curriculum Vitae
Education
No. | University | Academic Degree | Year | Degree |
---|---|---|---|---|
1 | Institut Teknologi Bandung | Dr | 2016 | S3 |
2 | Institut Teknologi Bandung | M.Si | 2005 | S2 |
3 | Universitas Sebelas Maret | S.Si | 1999 | S1 |
Teaching Experience
No. | Term | Code | Course | Class |
---|---|---|---|---|
1 | 2024/2025 Ganjil | BCK1KAB3 | MATRIKS DAN RUANG VEKTOR | 1 |
2 | 2024/2025 Ganjil | BCK1KAB3 | MATRIKS DAN RUANG VEKTOR | 2 |
3 | 2024/2025 Ganjil | BCK2CAB3 | KALKULUS 3 | 1 |
4 | 2024/2025 Ganjil | BCK2CAB3 | KALKULUS 3 | 2 |
5 | 2024/2025 Ganjil | BCK2CAB3 | KALKULUS 3 | 3 |
6 | 2023/2024 Genap | MT317 | PROGRAM LINIER | A |
7 | 2023/2024 Genap | MT519 | METODE OPTIMASI | A |
8 | 2023/2024 Genap | MT782 | MATEMATIKA DISKRIT DAN APLIKASINYA | B |
9 | 2023/2024 Genap | MT426 | KAPITA SELEKTA MATEMATIKA | C |
10 | 2023/2024 Ganjil | MT411 | RISET OPERASI | A |
11 | 2023/2024 Ganjil | MT428 | PEMODELAN MATEMATIKA | A |
12 | 2023/2024 Ganjil | MT519 | METODE OPTIMASI | A |
13 | 2023/2024 Ganjil | CII2D3 | MATRIKS DAN RUANG VEKTOR | 4 |
14 | 2023/2024 Ganjil | CII2D3 | MATRIKS DAN RUANG VEKTOR | 1 |
15 | 2023/2024 Ganjil | MT416 | MATEMATIKA KOMBINATORIK | A |
16 | 2023/2024 Ganjil | MT426 | KAPITA SELEKTA MATEMATIKA | F |
17 | 2023/2024 Ganjil | MT301 | KALKULUS DIFERENSIAL | A |
18 | 2023/2024 Ganjil | CII1D3 | KALKULUS | 6 |
19 | 2023/2024 Ganjil | CII1D3 | KALKULUS | 10 |
20 | 2022/2023 Genap | MT424 | TEORI GRAF | B |
21 | 2022/2023 Genap | MT317 | PROGRAM LINIER | A |
22 | 2022/2023 Genap | MT402 | PERSAMAAN DIFERENSIAL BIASA | B |
23 | 2022/2023 Genap | MT428 | PEMODELAN MATEMATIKA | B |
24 | 2022/2023 Ganjil | MT411 | RISET OPERASI | A |
25 | 2022/2023 Ganjil | MT312 | PROGRAM KOMPUTER | B |
26 | 2022/2023 Ganjil | MT312 | PROGRAM KOMPUTER | A |
27 | 2022/2023 Ganjil | MT519 | METODE OPTIMASI | A |
28 | 2022/2023 Ganjil | MT416 | MATEMATIKA KOMBINATORIK | A |
29 | 2022/2023 Ganjil | GZ112 | MATEMATIKA | B |
30 | 2022/2023 Ganjil | GZ112 | MATEMATIKA | A |
31 | 2022/2023 Ganjil | GZ112 | MATEMATIKA | 2022 |
32 | 2022/2023 Ganjil | MT426 | KAPITA SELEKTA MATEMATIKA | D |
33 | 2022/2023 Ganjil | MT301 | KALKULUS DIFERENSIAL | A |
34 | 2022/2023 Ganjil | CII1D3 | KALKULUS | 5 |
35 | 2022/2023 Ganjil | CII1D3 | KALKULUS | 6 |
36 | 2022/2023 Ganjil | CII1D3 | KALKULUS | 12 |
37 | 2021/2022 Genap | MT424 | TEORI GRAF | A |
38 | 2021/2022 Genap | MT424 | TEORI GRAF | B |
39 | 2021/2022 Genap | MT405 | PEMOGRAMAN MODULAR | B |
40 | 2021/2022 Genap | MT405 | PEMOGRAMAN MODULAR | A |
41 | 2021/2022 Genap | MT405 | PEMOGRAMAN MODULAR | C |
42 | 2021/2022 Genap | MT405 | PEMOGRAMAN MODULAR | D |
43 | 2021/2022 Genap | MT416 | MATEMATIKA KOMBINATORIK | A |
44 | 2021/2022 Ganjil | MT411 | RISET OPERASI | A |
45 | 2021/2022 Ganjil | MT519 | METODE OPTIMASI | A |
46 | 2021/2022 Ganjil | MT426 | KAPITA SELEKTA MATEMATIKA | D |
47 | 2021/2022 Ganjil | MT301 | KALKULUS DIFERENSIAL | B |
48 | 2021/2022 Ganjil | IEI1E4 | KALKULUS 1 | 6 |
49 | 2021/2022 Ganjil | IEI1E4 | KALKULUS 1 | 4 |
50 | 2021/2022 Ganjil | IEI1E4 | KALKULUS 1 | 5 |
51 | 2021/2022 Ganjil | IEI1E4 | KALKULUS 1 | 14 |
52 | 2020/2021 Pendek | MT416 | MATEMATIKA KOMBINATORIK | D |
53 | 2020/2021 Pendek | MT416 | MATEMATIKA KOMBINATORIK | C |
54 | 2020/2021 Genap | MT424 | TEORI GRAF | A |
55 | 2020/2021 Genap | MT405 | PEMOGRAMAN MODULAR | A |
56 | 2020/2021 Genap | MT405 | PEMOGRAMAN MODULAR | C |
57 | 2020/2021 Genap | MT405 | PEMOGRAMAN MODULAR | B |
58 | 2020/2021 Genap | MT405 | PEMOGRAMAN MODULAR | D |
59 | 2020/2021 Genap | MT416 | MATEMATIKA KOMBINATORIK | A |
60 | 2020/2021 Genap | MT307 | KALKULUS INTEGRAL | A |
61 | 2020/2021 Genap | MA200 | APLIKASI MATEMATIKA, SAINS, TEKNOLOGI, DAN REKAYASA | K |
62 | 2020/2021 Ganjil | MT411 | RISET OPERASI | A |
63 | 2020/2021 Ganjil | MT519 | METODE OPTIMASI | A |
64 | 2020/2021 Ganjil | MT416 | MATEMATIKA KOMBINATORIK | B |
65 | 2020/2021 Ganjil | MT782 | MATEMATIKA DISKRIT DAN APLIKASINYA | A |
66 | 2020/2021 Ganjil | MT782 | MATEMATIKA DISKRIT DAN APLIKASINYA | B |
67 | 2020/2021 Ganjil | MT426 | KAPITA SELEKTA MATEMATIKA | A |
68 | 2020/2021 Ganjil | MT301 | KALKULUS DIFERENSIAL | A |
69 | 2020/2021 Ganjil | MT301 | KALKULUS DIFERENSIAL | A |
70 | 2020/2021 Ganjil | IEI1E4 | KALKULUS 1 | TI0 |
71 | 2020/2021 Ganjil | IEI1E4 | KALKULUS 1 | TI8 |
72 | 2020/2021 Ganjil | IEI1E4 | KALKULUS 1 | TI0 |
73 | 2020/2021 Ganjil | IEI1E4 | KALKULUS 1 | TIB |
74 | 2020/2021 Ganjil | IEI1E4 | KALKULUS 1 | TI8 |
75 | 2020/2021 Ganjil | IEI1E4 | KALKULUS 1 | TIB |
76 | 2020/2021 Ganjil | IEI1E4 | KALKULUS 1 | TI9 |
77 | 2020/2021 Ganjil | IEI1E4 | KALKULUS 1 | TI9 |
78 | 2019/2020 Genap | MT416 | MATEMATIKA KOMBINATORIK | A |
79 | 2019/2020 Genap | MT416 | MATEMATIKA KOMBINATORIK | A |
80 | 2019/2020 Genap | MT307 | KALKULUS INTEGRAL | A |
81 | 2019/2020 Genap | MUH1D4 | KALKULUS 2 A | TI6 |
82 | 2019/2020 Genap | MUH1D4 | KALKULUS 2 A | TI4 |
83 | 2019/2020 Genap | MUH1D4 | KALKULUS 2 A | TI5 |
84 | 2019/2020 Ganjil | MT411 | RISET OPERASI | A |
85 | 2019/2020 Ganjil | MT519 | METODE OPTIMASI | A |
86 | 2019/2020 Ganjil | MT416 | MATEMATIKA KOMBINATORIK | A |
87 | 2019/2020 Ganjil | MUH1A4 | KALKULUS I A | TI5 |
88 | 2019/2020 Ganjil | MUH1A4 | KALKULUS I A | TI6 |
89 | 2019/2020 Ganjil | MUH1A4 | KALKULUS I A | TI7 |
90 | 2019/2020 Ganjil | MT301 | KALKULUS DIFERENSIAL | A |
91 | 2018/2019 Pendek | MT416 | MATEMATIKA KOMBINATORIK | A |
92 | 2018/2019 Pendek | MT416 | MATEMATIKA KOMBINATORIK | A |
93 | 2018/2019 Genap | MT416 | MATEMATIKA KOMBINATORIK | A |
94 | 2018/2019 Genap | MT416 | MATEMATIKA KOMBINATORIK | A |
95 | 2018/2019 Genap | MUH1D4 | KALKULUS 2 A | TI9 |
96 | 2018/2019 Genap | MUH1D4 | KALKULUS 2 A | TI0 |
97 | 2018/2019 Genap | MUH1D4 | KALKULUS 2 A | 9 |
98 | 2018/2019 Genap | MUH1D4 | KALKULUS 2 A | 0 |
99 | 2018/2019 Genap | MUH1D4 | KALKULUS 2 A | 8 |
100 | 2018/2019 Genap | MUH1D4 | KALKULUS 2 A | TI8 |
101 | 2018/2019 Ganjil | MT411 | RISET OPERASI | A |
102 | 2018/2019 Ganjil | MT519 | METODE OPTIMASI | A |
103 | 2018/2019 Ganjil | MT416 | MATEMATIKA KOMBINATORIK | A |
104 | 2017/2018 Pendek | MT416 | MATEMATIKA KOMBINATORIK | A |
105 | 2017/2018 Pendek | MT416 | MATEMATIKA KOMBINATORIK | A |
106 | 2017/2018 Ganjil | MT411 | RISET OPERASI | 02030 |
107 | 2017/2018 Ganjil | MT519 | METODE OPTIMASI | 02055 |
108 | 2017/2018 Ganjil | MT416 | MATEMATIKA KOMBINATORIK | 02188 |
109 | 2017/2018 Ganjil | MUH1A4 | KALKULUS 1 A | 1 |
110 | 2016/2017 Pendek | MT416 | MATEMATIKA KOMBINATORIK | A |
111 | 2016/2017 Pendek | MT416 | MATEMATIKA KOMBINATORIK | A |
112 | 2016/2017 Genap | MT402 | PERSAMAAN DIFERENSIAL BIASA | A |
113 | 2016/2017 Genap | MT402 | PERSAMAAN DIFERENSIAL BIASA | A |
114 | 2016/2017 Genap | MT416 | MATEMATIKA KOMBINATORIK | A |
115 | 2015/2016 Ganjil | MT411 | RISET OPERASI | A |
116 | 2014/2015 Pendek | MT416 | MATEMATIKA KOMBINATORIK | A |
117 | 2014/2015 Pendek | MT416 | MATEMATIKA KOMBINATORIK | A |
118 | 2014/2015 Pendek | MT416 | MATEMATIKA KOMBINATORIK | A |
119 | 2014/2015 Pendek | MT416 | MATEMATIKA KOMBINATORIK | A |
120 | 2014/2015 Genap | KU3073 | PANCASILA DAN KEWARGANEGARAAN | 9 |
121 | 2014/2015 Genap | MT416 | MATEMATIKA KOMBINATORIK | A |
122 | 2014/2015 Genap | MUG1B4 | KALKULUS II | 10 |
123 | 2014/2015 Genap | MUG1B4 | KALKULUS II | 9 |
124 | 2014/2015 Genap | MUG1A4 | KALKULUS I | 1 |
125 | 2014/2015 Ganjil | MT411 | RISET OPERASI | 01 |
126 | 2014/2015 Ganjil | MUG1A4 | KALKULUS I | 05 |
127 | 2013/2014 Genap | MT416 | MATEMATIKA KOMBINATORIK | 10 |
128 | 2013/2014 Genap | MT416 | MATEMATIKA KOMBINATORIK | 01 |
129 | 2013/2014 Ganjil | FEG2B4 | RANGKAIAN LISTRIK | 10 |
130 | 2013/2014 Ganjil | MT313 | ALGORITMA DAN PEMROGRAMAN I | 01 |
131 | 2012/2013 Ganjil | DU1023 | MATEMATIKA DISKRIT | 01 |
132 | 2012/2013 Ganjil | DU1023 | MATEMATIKA DISKRIT | 02 |
133 | 2011/2012 Ganjil | MI3104 | PROYEK AKHIR | 01 |
134 | 2011/2012 Ganjil | DU1023 | MATEMATIKA DISKRIT | 01 |
135 | 2011/2012 Ganjil | MI3112 | KERJA PRAKTEK | 06 |
136 | 2011/2012 Ganjil | MI3112 | KERJA PRAKTEK | 05 |
137 | 2011/2012 Ganjil | MI3112 | KERJA PRAKTEK | 04 |
138 | 2011/2012 Ganjil | MI3112 | KERJA PRAKTEK | 07 |
139 | 2011/2012 Ganjil | MI3112 | KERJA PRAKTEK | 08 |
140 | 2010/2011 Genap | MF133 | MATEMATIKA DISKRIT | 13 |
141 | 2010/2011 Genap | MF133 | MATEMATIKA DISKRIT | 05 |
142 | 2009/2010 Genap | IF32209 | KALKULUS II | 01 |
143 | 2009/2010 Ganjil | IF33216 | LOGIKA MATEMATIKA. | 01 |
144 | 2009/2010 Ganjil | IF31201 | KALKULUS I | 01 |
145 | 2008/2009 Genap | IF34308 | KOMUNIKASI DATA | 17 |
146 | 2008/2009 Ganjil | IF33216 | LOGIKA MATEMATIKA. | 02 |
147 | 2008/2009 Ganjil | IF37501K | KERJA PRAKTEK | 11 |
148 | 2007/2008 Genap | IF32209 | KALKULUS II | 01 |
149 | 2007/2008 Ganjil | IF33216 | LOGIKA MATEMATIKA. | 26 |
150 | 2006/2007 Genap | IF34220 | MATEMATIKA DISKRIT | 24 |
151 | 2006/2007 Genap | IF34220 | MATEMATIKA DISKRIT | 02 |
152 | 2006/2007 Genap | IF32209 | KALKULUS II | 01 |
153 | 2006/2007 Ganjil | IF33216 | LOGIKA MATEMATIKA. | 13 |
154 | 2006/2007 Ganjil | IF31201 | KALKULUS I | 01 |
155 | 2005/2006 Genap | IF34220 | MATEMATIKA DISKRIT | 10 |
156 | 2005/2006 Genap | IF32209 | KALKULUS II | 04 |
157 | 2005/2006 Ganjil | IF33216 | LOGIKA MATEMATIKA. | 29 |
158 | 2005/2006 Ganjil | IF37501K | KERJA PRAKTEK | 4A |
159 | 2005/2006 Ganjil | IF31201 | KALKULUS I | 15 |
160 | 2004/2005 Genap | IF32209 | KALKULUS II | 19 |
161 | 2004/2005 Ganjil | IF33216 | LOGIKA MATEMATIKA | 22 |
162 | 2004/2005 Ganjil | IF37501K | KERJA PRAKTEK. | 39 |
163 | 2004/2005 Ganjil | IF31201 | KALKULUS I | 02 |
164 | 2003/2004 Ganjil | IF33216 | LOGIKA MATEMATIKA | 22 |
165 | 2003/2004 Ganjil | IF37501K | KERJA PRAKTEK. | 39 |
166 | 2003/2004 Ganjil | IF31201 | KALKULUS I | 02 |
167 | 2002/2003 Genap | IF32209 | KALKULUS II | 19 |
168 | 2002/2003 Ganjil | IF33216 | LOGIKA MATEMATIKA | 22 |
169 | 2002/2003 Ganjil | IF37501K | KERJA PRAKTEK. | 39 |
170 | 2002/2003 Ganjil | IF31201 | KALKULUS I | 02 |
Intelectual Property Right
No. | Title | Type | Year |
---|---|---|---|
1 | Video Penjelasan Relasi Berulang Linear | Hak cipta nasional | 2022 |
2 | Program Aplikasi Optimisasi Pairing Kru Pesawat | Hak cipta nasional | 2019 |
3 | Simulator Delay Penerbangan | Hak cipta nasional | 2017 |
Publications
No. | Title | Type | Year |
---|---|---|---|
1 | OPTIMIZATION MODEL OF TRAIN SCHEDULING | Prosiding seminar internasional | 2013 |
2 | Simulation for measuring the effect of flight retiming to the robustness of flight schedule | Prosiding seminar internasional | 2014 |
3 | Some effects of perturbed flight schedules to the the performance of aircraft routings | Prosiding seminar internasional | 2018 |
4 | The development of mathematics teaching materials integrating by Augmented Reality Software and Android for deaf students | Prosiding seminar internasional | 2021 |
5 | A Heuristic Approach for Solving Flight Retiming Problems | Prosiding seminar internasional | 2023 |
6 | The mathematical modeling skills of eighth-grade students in solving contextual problems | Prosiding seminar internasional | 2023 |
7 | Planning Evacuation Routes in Rise Buildings Using Maximum Dynamic Flow Approach | Prosiding seminar internasional | 2024 |
8 | Solving Airline Crew Scheduling Problems by Identifying | Prosiding seminar internasional | 2024 |
9 | Determining the robust counterpart of flight retiming model | Poster seminar internasional | 2019 |
10 | Perluasan Model Cutting Stock Dua Dimensi | Lain-lain | 2006 |
11 | Optimisasi Crew Pairing dengan Memodifikasi Jadwal Penerbangan | Lain-lain | 2013 |
12 | Optimization Model for an Airline Crew Rostering Problem: Case of Garuda Indonesia. | Lain-lain | 2013 |
13 | Penyelesaian Masalah Penugasan Multi Objektif Dengan Metode Weighted-Sum Dan Metode Ε-Constraint | Lain-lain | 2017 |
14 | PENYELESAIAN MASALAH PENUGASAN MULTI OBJEKTIF DENGAN METODE WEIGHTED-SUM DAN METODE ε-CONSTRAINT | Lain-lain | 2017 |
15 | Penyelesaian Colored Traveling Salesman Problem Menggunakan Algoritma Genetika Hill-Climbing | Lain-lain | 2019 |
16 | Art Gallery Problem Untuk 1-Guarded Guards Dan 2-Guarded Guards Pada Poligon Orthogonal | Lain-lain | 2020 |
17 | Automatic voice activity detection using fuzzy-neuro classifier | Lain-lain | 2020 |
18 | Penyelesaian Masalah Perencanaan Produksi Dengan Pendekatan Fuzzy Goal Programming (Studi Kasus: Perusahaan Kaos Kaki di Kabupaten Majalengka) | Lain-lain | 2020 |
19 | NIP. 198009182008122002 | Lain-lain | 2023 |
20 | Analysis of students' errors in solving word problems viewed from mathematical resilience | Jurnal nasional terakreditasi | 2021 |
21 | Penyelesaian Masalah Pendistribusian Barang Menggunakan Algoritma Bee Colony Optimization | Jurnal nasional | 2008 |
22 | Model Optimasi Penjadwalan Kereta Api (Studi Kasus pada Jadwal Kereta Api di PT Kereta Api Indonesia (Persero) Daop 2 Bandung Lintasan Bandung-Cicalengka) | Jurnal nasional | 2013 |
23 | SOFTWARE FOR DETERMINING THE BEST CELL PHONE PROVIDER AND PLAN | Jurnal nasional | 2013 |
24 | Penyelesaian Masalah Penjadwalan Perkuliahan Menggunakan Algoritma Genetika (Studi Kasus Di Departemen Pendidikan Matematika Fpmipa Universitas Pendidikan Indonesia) | Jurnal nasional | 2018 |
25 | PENYELESAIAN MASALAH PENJADWALAN PERKULIAHAN MENGGUNAKAN ALGORITMA GENETIKA (STUDI KASUS DI DEPARTEMEN PENDIDIKAN MATEMATIKA FPMIPA UNIVERSITAS PENDIDIKAN INDONESIA) | Jurnal nasional | 2019 |
26 | OPTIMASI DELAY LAMPU HIJAU LALU LINTAS MENGGUNAKAN FUZZY METODE MAMDANI DAN METODE SUGENO | Jurnal nasional | 2020 |
27 | Penyelesaian Capacitated Vehicle Routing Problem dengan Menggunakan Gabungan Algoritma Genetika dan Simulated Annealing | Jurnal nasional | 2021 |
28 | Analysis of Students' Errors in Solving Word Problems Viewed from Mathematical Resilience | Jurnal nasional | 2021 |
29 | Optimisasi Pendistribusian Dana Bantuan Operasional Sekolah (BOS) dengan Pendekatan Fuzzy Goal Programming | Jurnal nasional | 2022 |
30 | Optimisasi Portofolio Saham Syariah dengan Pendekatan Fuzzy Goal Programming | Jurnal nasional | 2023 |
31 | Penyelesaian Capacitated Vehicle Routing Problem Menggunakan Gabungan Algoritma Genetika dan Simulated Annealing | Jurnal nasional | 2023 |
32 | PENYELESAIAN MASALAH CUTTING STOCK DENGAN PENGELASAN MENGGUNAKAN TEKNIK COLUMN GENERATION | Jurnal nasional | 2023 |
33 | Upaya Meningkatkan Keterampilan Berhitung Cepat Menggunakan Jarimatika pada Anak-Anak Yayasan Yatim dan Dhuafa Daarul Husna Parompong Kabupaten Bandung Barat | Jurnal nasional | 2023 |
34 | Implementasi Model Goal Programming untuk Menganalisis Kinerja Keuangan Perusahaan | Jurnal nasional | 2024 |
35 | Penyelesaian Multi Depot Vehicle Routing Problem with Time Windows Menggunakan Particle Swarm Optimization Algorithm | Jurnal nasional | 2024 |
36 | Seminar Multimedia Interaktif Tim Dosen Multimedia dan Mahasiswa untuk Guru Matematika | Jurnal nasional | 2024 |
37 | Column Generation Technique for Solving Two-Dimensional Cutting Stock Problems: method of stripe approach | Jurnal internasional | 2007 |
38 | Improving the Robustness of Flight Schedule by Flight Re-timing and Imposing a New Crew Base | Jurnal internasional | 2013 |
39 | Optimization model for an airline crew rostering problem: Case of garuda Indonesia | Jurnal internasional | 2014 |
40 | A Solution Method for Airline Crew Recovery Problems | Jurnal internasional | 2015 |
41 | Flight re-timing models to improve the robustness of airline schedules | Jurnal internasional | 2016 |
42 | Rainwater Pressure Electic Generator Model Using Piezoelectric | Jurnal internasional | 2021 |
43 | Model Optimisasi Robust Pada Masalah Penjadwalan di Maskapai Penerbangan | Buku referensi | 2020 |
Research
No. | Research Title | Year |
---|---|---|
1 | MODEL OPTIMISASI DAN SIMULASI PERENCANAAN JALUR EVAKUASI BERBASIS VEHICLE ROUTING PROBLEM DAN PERP1NDAHAN MANDIRI PENGUNGSI | 2024 |
2 | Model Optimisasi Recovery Jadwal Penerbangan, Jadwal Kru Pesawat, Dan Rotasi Pesawat Untuk Meminimumkan Dampak Delay Penerbangan | 2024 |
3 | Model Optimisasi dan Simulasi Perencanaan Jalur Evakuasi di Gedung Bertingkat dengan Pendekatan Quickest Maximum Dynamic Flows | 2023 |
4 | Model Optimisasi Recovery Jadwal Penerbangan, Jadwal Kru Pesawat, Dan Rotasi Pesawat Untuk Meminimumkan Dampak Delay Penerbangan | 2023 |
5 | PENGEMBANGAN MODUL DIGITAL MATEMATIKA KOMBINATORIK BERORIENTASI PENGUATAN HIGHER ORDER THINKING SKILLS MAHASISWA MATEMATIKA | 2022 |
6 | Model Distribusi Delay pada Maskapai Penerbangan | 2014 |
Community Services
No. | Community Service Title | Year |
---|---|---|
1 | Pembinaan ONMIPA PT 2022 | 2022 |
2 | Kegiatan Pengabdian kepada Masyarakat | 2020 |