Presentations

1. The 10th International Conference on Research, Implementation, and Education of Mathematics and Science 2023 (ICRIEMS), Yogyakarta, 10-11 August 2023
   Contributed paper: The SI1S1I2S-Type Epidemiological Model to Determine Important Parameters for COVID-19 Transmission with Reinfection in Indonesia 

2. Seminar Nasional Pendidikan Matematika (SNPM) 2023, Universitas PGRI Adi Buana Surabaya, 3 Juni 2023

Contributed paper: Guru Belajar Matematika: Inovasi Pembelajaran Matematika pada Kurikulum Merdeka di Era Society 5.0 Melalui Pemecahan Masalah Matematika

3. Seminar Nasional Pendidikan Matematika (SNPM) 2022, Universitas PGRI Adi Buana Surabaya, 11 Juni 2022

Contributed paper: Guru Belajar Matematika: Implementasi Kurikulum Merdeka dengan Pembelajaran Matematika Berbasis Perangkat Lunak   

4. The 3rd International Conference on Natural Sciences, Mathematics, Applications, Research, and Technology (ICON SMART), Bali, 3-4 June 2022 

Contributed paper: A Comparative Study on Numerical Stability for Solutions of Epidemiological Models with Standard Finite Difference and Nonstandard Finite Difference Schemes

5. The 3rd International Conference on Natural Sciences, Mathematics, Applications, Research, and Technology (ICON SMART), Bali, 3-4 June 2022 

Contributed paper: The Importance of a High Cautiousness Level and the Use of High-Efficacy Vaccines for Resolving The Pandemic of COVID-19

6. The 4th International Conference on Statistics, Mathematics, Teaching, and Research (ICSMTR), Makassar, 9-10 Oktober 2021 

Contributed paper: Effect of undecided and swing voters on the dynamics voters model in presidential elections

7. The 4th International Conference on Statistics, Mathematics, Teaching, and Research (ICSMTR), Makassar, 9-10 Oktober 2021
   Contributed paper: Modelling the dynamics of voters model of two political fanaticism figures with the interaction between voters in Indonesian presidential elections

8. The 6th Seminar Nasional Matematika dan Pendidikan Matematika (SENATIK), Semarang, 11-12 Agustus 2021
   Contributed paper: Use of Mathematical Cryptanalysis on Magic Tricks

9. Seminar Terpusat Penelitian dan Pengabdian kepada Masyarakat Universitas Katolik Parahyangan, Bandung, 10-11 November 2020
   Contributed paper: Analisis Model Penyebaran Virus Komputer dengan Peluang Transisi Melibatkan Faktor Kontrol pada Kompartemen Komputer Rentan dan Terinfeksi   

10. The 5th Seminar Nasional Matematika dan Pendidikan Matematika (SENATIK), Semarang, 12-13 Agustus 2020
    Contributed paper: Model Dinamika Penyebaran Pemilih dengan Menggunakan Pendekatan Epidemiologi

11. 3rd International Conference on Statistics, Mathematics, Teaching, and Research (ICSMTR), Makassar, 9-10 Oktober 2019
    Contributed paper: A Mathematical Modelling and Numerical Simulation of The SIRS Political Fanaticism Figure Voters Model with Presence of Media in Indonesian Presidential Elections

12. Seminar Nasional dan Workshop Pendidikan Matematika, UNPATTI, Ambon, 22-23 Agustus 2019
    Keynote speaker: Mengembangkan Kemampuan Literasi Matematika Melalui HOTS dan Non-Routine Problem Solving untuk Menyiapkan Guru Matematika Menghadapi Tantangan Revolusi Industri 4.0 dengan Menggunakan Metode Computational Thinking

13. 2nd International Seminar on Innovation in Mathematics and Mathematics Education (ISIMMED), Yogyakarta, 20-24 November 2018
    Contributed paper: Application of Analytic Approximation Method Using HAM for Solving The Democratic Elections Model   

14. The 3rd International Conference on Mathematics, Science, Education, and Technology (ICOMSET), Padang, 4-5 October 2018
    Contributed paper: The Comparison of Fourth Order Runge-Kutta and Homotopy Analysis Methods for Solving Three Basic Epidemic Models

15. Seminar Nasional Matematika 2018, UNPAR, Bandung, 22 September 2018
    Contributed paper: Model Stokastik Penyebaran Penyakit Menggunakan Metode Euler-Maruyama

16. Konferensi Nasional Matematika XIX, UB, Malang, 24-26 Juli 2018
    Contributed paper: Pengaruh Media Sosial terhadap Dinamika Penyebaran Pemilih pada Pemilu Langsung di Indonesia   

17. The 8th Annual Basic Science International Conference (BASIC), Malang, 6-7 Maret 2018
    Contributed paper: Solutions of The Democratic Elections Model by Homotopy Analysis Method 

18. 2nd International Joint Conference Science and Technology (IJCST), Bali, 27-28 September 2017
    Contributed paper: The SIR Political Figure Fever Model for Voters Mapping of Presidential Elections in Indonesia 

19. Seminar Nasional Matematika 2017, UNPAR, Bandung, 23 September 2017
    Keynote speaker: Dinamika Penyebaran Pemilih dengan Pengaruh Media Sosial pada Pemilu di Indonesia 

20. International Conference on Applied Sciences Mathematics and Informatics (ICASMI), UNILA, Lampung, 13-15 July 2017
    Contributed paper: A Comparative Analysis of Fourth Order Runge-Kutta and Homotopy Analysis Methods to Solve Three Basic Epidemic Models

21. Konferensi Nasional Matematika XVIII, UR, Pekanbaru, 2-4 November 2016
    Contributed paper: Pendekatan Model Markowitz dalam Menentukan Besarnya Alokasi Dana untuk Mengurangi Jumlah Kasus Dengue di Kota Bandung   

22. Mathematics, Science, and Computer Science Education International Seminar (MSCEIS), UPI, Bandung, 15 October 2016
    Contributed paper: Optimization Model using Markowitz Model Approach for Reducing the Number of Dengue Cases in Bandung 

23. Seminar Nasional MIPA 2016, UNDIKSHA, Bali, 30 Juli 2016
    Contributed paper: Model Optimasi untuk Mengontrol Banyaknya Kasus Dengue (Data Penyakit Demam Dengue di Kota Bandung)

24. Asian Mathematical Conference (AMC), Bali, 25-29 July 2016
    Contributed paper: Relative Risk Estimation of Dengue Disease in Bandung, Indonesia Using Poisson-gamma and BYM Models Considering The Level of The Severity 

25. International Conference on Mathematics: Pure, Applied, and Computation (ICoMPAC), ITS, Surabaya, 3 December 2015
    Contributed paper: A Mathematical Model for The Spread of Two-Political Figures Fever

26. International Symposium on Science and Mathematics (ISySM), MALTESAS-UTM, Bandung, 24-26 November 2015
    Contributed paper: Analysis of Voters Mapping on 2014 Presidential Election in Indonesia Based on Standardized Incidence Ratio Method

27. 7th South East Asian Mathematical Society (SEAMS), UGM, Yogyakarta, 18-21 Agustus 2015
    Contributed paper: Effect of (Social) Media on The Political Figure Fever Model: Jokowi Fever Model

28. International Conference on Arts, Management, Science, and Social Science (ICAMSSc), IPN Network, Bandung, 5-6 Desember 2014
    Contributed paper: A SIR Transmission Model of Political Figure Fever

29. International Conference on Statistics and Mathematics (ICSM), ITS, Surabaya, 27-28 Nopember 2014
    Contributed paper: Analysis of the political figure fever model with media using epidemiological approach: in case of Jokowi

30. International Postgraduate Conference on Science and Mathematics (IPCSM), UPSI, Tanjong Malim, Perak, Malaysia, 18-19 Oktober 2014
    Contributed paper: A Mathematical Model of Political Figure Fever: Jokowi Effect

31. Konferensi Nasional Matematika XVII, ITS, Surabaya, 11-14 Juni 2014
    Contributed paper: Peluang Suatu Tim untuk Mencapai Peringkat Tertentu dalam Suatu Turnamen

32. Konferensi Nasional Pendidikan Matematika V, UM, Malang, 27-29 Juni 2013
    Contributed paper: Matematika Rekreasi Melalui Permainan Kartu

33. Konferensi Nasional Matematika XIV, UNSRI, Palembang, 24-27 Juli 2008
    Contributed paper: Efek Dilusi pada Nilai Waran

34. Konferensi Nasional Matematika XIII, UNNES, Semarang, 24-27 Juli 2006
    Contributed paper: Analisis Perioda Waktu Jatuh Tempo pada Nilai Waran

35. Seminar Nasional Statistika VII, ITS, Surabaya, 26 November 2005
    Contributed paper: Hedging Portfolio pada Opsi Call Eropa dan Opsi Call Asia

36. Seminar Nasional Matematika, UI, Depok, 30 Juli 2005
    Contributed paper: Aplikasi Distribusi Gauss Invers untuk Mengkonstruksi Hedging Portfolio pada Asian Call Option