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All Journal Jurnal Matematika dan Statistika serta Aplikasinya (Jurnal MSA) Journal of Natural Sciences and Mathematics Research Jurnal Matematika UNAND Jurnal Diferensial LOSARI: Jurnal Pengabdian Kepada Masyarakat ARRUS Jurnal Pengabdian Kepada Masyarakat Jurnal Hasil-Hasil Pengabdian dan Pemberdayaan Masyarakat Journal of Mathematics, Computation and Statistics (JMATHCOS) Journal of Mathematics, Statistics, and Applications Limits: Journal of Mathematics and Its Applications Journal of Community Services and Development
Yusuf Ramadana
Universitas Negeri Makassar
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Environmental Science Health Professions Languange, Linguistic, Communication & Media Library & Information Science Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Physics Public Health Social Sciences Transportation Other

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Pendampingan Persiapan OSN Matematika 2025 bagi Siswa dan guru SMP pada materi Aljabar Yusuf Ramadana; Syamsuddin Mas’ud; Rahmat Hidayat; Andika Saputra; Muhammad Syarifuddin Rahman
ARRUS Jurnal Pengabdian Kepada Masyarakat Vol. 4 No. 2 (2025)
Publisher : PT ARRUS Intelektual Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35877/454RI.abdiku3978

Abstract

Olimpiade Sains Nasional (OSN) tingkat Sekolah Menengah Pertama (SMP) merupakan ajang kompetisi ilmiah yang menuntut penguasaan konsep matematika secara mendalam serta kemampuan berpikir kritis dan analitis. Untuk mendukung peningkatan kualitas peserta dari wilayah Sulawesi Selatan, telah dilaksanakan kegiatan pendampingan persiapan OSN 2025 pada bidang Matematika untuk materi Aljabar. Tujuan kegiatan ini adalah untuk memperkuat pemahaman materi, melatih keterampilan problem solving, serta membekali guru pembimbing dengan strategi pembinaan yang efektif. Kegiatan dilaksanakan secara daring melalui platform Zoom pada tanggal 31 Mei 2025 dan diikuti oleh 23 peserta yang terdiri atas siswa dan guru pembimbing dari berbagai sekolah. Pendampingan berlangsung dalam dua sesi, masing-masing berdurasi dua jam, dengan materi disampaikan oleh mentor berpengalaman. Hasil kegiatan menunjukkan bahwa peserta cukup memahami materi yang disampaikan, meskipun interaksi berupa pertanyaan masih terbatas. Kendati demikian, keterlibatan peserta tetap aktif, terlihat dari respons terhadap kesalahan penulisan yang muncul selama sesi berlangsung. Kegiatan ini diharapkan dapat berkontribusi pada peningkatan kesiapan peserta menghadapi OSN serta mendorong keberlanjutan program pembinaan di daerah.
A Mathematical Model with Time Delay for Addressing Online Game Addiction Through Family Time Intervention Based on Local Wisdom in South Sulawesi Muhammad Abdy; Syafruddin Side; Yusuf Ramadana; Andi Muh. Ridho Yusuf SAP
Journal of Mathematics, Computations and Statistics Vol. 9 No. 2 (2026): Volume 09 Issue 02 (June 2026)
Publisher : Jurusan Matematika FMIPA UNM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35580/Jmathcos9676

Abstract

This study analyzes the dynamics of online game addiction among FMIPA UNM students using a modified time-delayed SEAFR (Susceptible–Exposed–Addicted–Family time–Recovered) mathematical model. Online game addiction is a growing concern that threatens academic performance and social well-being. The research applies a five-stage methodology: (1) literature review of SIR-based models and digital addiction studies to identify compartments and parameters; (2) data collection from 400 students through proportionate stratified random sampling; (3) model development incorporating time delay, cultural norms, and family-based interventions; (4) equilibrium and stability analysis using Jacobian matrices and Routh–Hurwitz criteria; and (5) numerical simulations with MATLAB to evaluate intervention strategies. The analysis yields a basic reproduction number, R₀ = 0.5, indicating that addictive behavior tends to decline without reinforcement of exposure. However, the endemic equilibrium remains locally asymptotically stable, suggesting addiction may persist if interventions are weak. Simulation results highlight that reducing exposure (β), enhancing recovery through awareness and cultural support (γ), and strengthening family-based activities significantly reduce addiction prevalence. These findings show the usefulness of mathematical modeling as a decision-support tool contextualized by local wisdom, offering practical insights for policymakers and educators in designing effective interventions to address student addiction.
BOUNDEDNESS OF GENERALIZED FRACTIONAL INTEGRALS ON GENERALIZED WEIGHTED MORREY SPACES OVER METRIC MEASURE SPACES AND APPLICATIONS Yusuf Ramadana
Jurnal Matematika UNAND Vol. 15 No. 1 (2026)
Publisher : Departemen Matematika dan Sains Data FMIPA Universitas Andalas Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jmua.15.1.1-16.2026

Abstract

In this paper we investigate the boundedness properties of generalized fractional integral on generalized weighted Morrey spaces over metric measure spaces. The measure used in this paper is a doubling measure which satisfies the growth condition. The results show that the generalized fractional integral is bounded from one generalized weighted Morrey spaces to another generalized weighted Morrey space over metric measure spaces either with the same or with the different parameters. Our results extend the known results for fractional integrals on generalized Morrey spaces. We then investigate the regularity of the solution of Dirichlet problem with the data in generalized weighted Morrey spaces by using the boundedness properties of the generalized fractional integral on generalized weighted Morrey space.
Optimalisasi Manajemen Inventori melalui Pelatihan dan Peningkatan Kemampuan Memanfaatkan Olsera dalam Pencatatan Stok Barang pada UMKM secara Online Syamsuddin Mas'ud; Yusuf Ramadana
LOSARI: Jurnal Pengabdian Kepada Masyarakat Vol. 7 No. 1 (2025): Juni 2025
Publisher : LOSARI DIGITAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53860/losari.v7i1.473

Abstract

Inventory data inaccuracy is a common issue faced by many UMKM, especially those operating in the food and beverage (F&B) industry. One effective solution to address this problem is implementing proper inventory management using digital tools such as the Olsera application. This community service project aimed to optimize inventory management by providing training and improving employees' skills in using Olsera for inventory recording. The project was carried out in four stages: discussions with the partner, preparation, training implementation, and monitoring and evaluation. As a result of these activities, the partner’s ability to use Olsera improved significantly, a standardized inventory recording process was established, and inventory data inaccuracies were reduced.
On The Boundedness Properties of the Generalized Fractional Integrals on the Generalized Weighted Morrey Spaces Yusuf Ramadana
Journal of Mathematics, Computations and Statistics Vol. 5 No. 2 (2022): Volume 05 Nomor 02 (Oktober 2022)
Publisher : Jurusan Matematika FMIPA UNM

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Morrey Spaces were first introduced by C.B. Morrey in 1938. Morrey space can be considered as a generalization of the Lebesgue spaces. Morrey spaces were then generalized become the generalized Morrey spaces, the weighted Morrey spaces, and the generalized weighted Morrey spaces. One of the studies on Morrey spaces is the boundedness of certain operators on the spaces. One of the operators is the fractional integral. The boundedness of fractional integrals on the classical Morrey spaces, the weighted Morrey spaces, the generalized Morrey spaces, and the generalized weighted Morrey spaces had been known. One of the extensions of fractional integrals is generalized fractional integral. The operator was bounded on the generalized Morrey spaces. The purpose of this study is to investigate the boundedness of generalized fractional integrals on the generalized weighted Morrey spaces. The weight used is Muckenhoupt class. The results obtained show that the generalized fractional integral is bounded from generalized weighted Morrey space to another generalized weighted Morrey space under some assumptions. The main result obtained then implies the boundedness of the generalized fractional maximal operator on generalized weighted Morrey spaces under the same assumptions.
Co-Authors Agusalim Juhari Andi Muh. Ridho Yusuf SAP Andika Saputra ANDIKA SAPUTRA Dwi Fitriani Rosali Izzulhaq, Agung Muhammad Abdy Muhammad Abdy Muhammad Syarifuddin Rahman Nuratika Rahmat Kalla Rahmat Hidayat Rosali, Dwi Fitriani Syafruddin Side Syamsuddin Mas'ud Syamsuddin Mas'ud Syamsuddin Mas’ud