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All Journal SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Riemann : Research of Mathematics and Mathematics Education
Suprapto
Universitas PGRI Ronggolawe
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Sosialisasi literasi digital cakap dan bijak menggunakan dompet elektronik di SMK Sunan Bejagung Tuban Andik Adi Suryanto; Amaludin Arifia; Alfian Nurlifa; Asfan Muqtadir; Fitroh Amaluddin; Aris Wijayanti; Andy Haryoko; Suprapto Suprapto; Miftahul Ulum; Nurul Hidayah; Layla Ayu Mustika Putri; Dhoni Prasetya; Syahrul Andrian Setia Budi; Rachmalia Vinda Kusuma; Miftahul Munir; Saeful Mizan; Yosia Dian Purnama Windrayadi; Mardi Widodo; Tabhita Sri Hartati Wulandari; Guruh Putro Dirgantoro
SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Vol 10, No 3 (2026): June
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jpmb.v10i3.38805

Abstract

Abstrak Perkembangan transaksi keuangan digital di kalangan pelajar menuntut peningkatan literasi keamanan finansial digital. Kegiatan pengabdian masyarakat ini bertujuan meningkatkan pemahaman siswa kelas XII SMK Sunan Bejagung Tuban terkait penggunaan dompet elektronik secara aman, pencegahan kejahatan siber, serta verifikasi legalitas layanan keuangan digital. Metode yang digunakan berupa sosialisasi, simulasi praktik keamanan akun, diskusi interaktif, serta evaluasi melalui pretest, posttest, dan angket respon. Kegiatan melibatkan 68 siswa dan menunjukkan peningkatan pemahaman signifikan dari kategori kurang menjadi sangat baik setelah kegiatan. Respon peserta juga sangat positif sehingga kegiatan dinilai efektif meningkatkan literasi keamanan finansial digital. Secara kuantitatif, hasil analisis deskriptif menunjukkan peningkatan kategori pemahaman sangat baik dari 1,7% (pretest) menjadi 82,8% (posttest), serta penurunan kategori kurang dari 66,8% menjadi 0%, yang dihitung berdasarkan persentase jumlah responden pada tiap skala penilaian instrumen pretest dan posttest (N=68). Kata kunci: literasi digital; dompet elektronik; keamanan siber; pelajar SMK; pengabdian masyarakat. AbstractThe rapid growth of digital financial transactions among students has increased the need for stronger digital financial security literacy. This community service program aimed to enhance the understanding of Grade 12 students at SMK Sunan Bejagung Tuban regarding the safe use of electronic wallets (e-wallets), cybercrime prevention, and verification of the legitimacy of digital financial services. The program employed educational sessions, hands-on simulations of account security practices, interactive discussions, and evaluations using pretests, posttests, and participant response questionnaires. A total of 68 students participated in the program. The findings demonstrated a substantial improvement in participants’ understanding, shifting from a poor level before the program to a very good level after its completion. Participants also provided highly positive responses, indicating that the program was effective in strengthening digital financial security literacy. Quantitatively, descriptive analysis showed that the proportion of participants in the very good understanding category increased from 1.7% in the pretest to 82.8% in the posttest, while the proportion in the poor category decreased from 66.8% to 0%. These percentages were calculated based on the number of respondents within each rating category of the pretest and posttest instruments (N = 68). Keywords: digital literacy; electronic wallets; cybersecurity; vocational high school students; community service.
Pareto-TSP Decision Support Framework for Cafe Location Selection in Tuban Regency Andy Haryoko; Gusti Uripno; Suprapto; Mario Fahmi Syahrial
Riemann: Research of Mathematics and Mathematics Education Vol. 8 No. 2 (2026): EDISI AGUSTUS
Publisher : Program Studi Pendidikan Matematika Universitas Katolik Santo Agustinus Hippo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38114/riemann.v8i2.210

Abstract

The cafe industry in Indonesia faces a business failure rate of 60-70% within the first three years, primarily caused by poor location selection, lacking systematic, data-driven methods (Lahindah et al., 2020; Nugraheni & Suparna, 2024). Existing studies tend to address location selection and route optimization independently. This separation leaves a gap in integrated multi-objective frameworks applicable to the Indonesian small-to-medium enterprise (SME) context. Unlike prior single-domain approaches, this study contributes a unified, replicable Decision Support System (DSS) that simultaneously integrates the Analytic Hierarchy Process (AHP), Pareto Multi-Objective Optimization, and the Traveling Salesman Problem (TSP) heuristic for optimal cafe location selection and logistics route efficiency. A sequential explanatory mixed-method design was applied, combining quantitative computational modeling with qualitative expert validation, across eight candidate locations in Tuban Regency, East Java, using spatial data from the Central Bureau of Statistics, OpenStreetMap, and Google Places API. Seven weighted criteria were evaluated via AHP (consistency ratio < 0.1), Pareto frontier analysis was conducted to identify non-dominated solutions, and three TSP algorithms (Nearest Neighbor, 2-Opt, Simulated Annealing) were implemented and compared. Results indicate that location L01 (Jl. Basuki Rahmat) achieved the highest DSS score of 0.797, a ranking that remained stable across the full sensitivity range of DSS weightings scenarios tested. The Simulated Annealing algorithm produced the most efficient distribution route of 4.22 km, reducing travel distance by 5.2% compared to the Nearest Neighbor baseline. Empirical validation against real-world Tuban data, measured as the proportion of parameters matching field observations within a 10% deviation threshold, demonstrated an 87.5% agreementrate. The proposed framework provides a replicable, transparent, and data-driven decision tool for SME cafe investors and municipal spatial planners.
Co-Authors Alfian Nurlifa Amaludin Arifia Andik Adi Suryanto Andy Haryoko Aris Wijayanti Asfan Muqtadir Dhoni Prasetya Fitroh Amaluddin Guruh Putro Dirgantoro Gusti Uripno Layla Ayu Mustika Putri Mardi Widodo Mario Fahmi Syahrial Miftahul Munir Miftahul Ulum Nurul Hidayah Rachmalia Vinda Kusuma Saeful Mizan, Saeful Syahrul Andrian Setia Budi Tabhita Sri Hartati Wulandari Yosia Dian Purnama Windrayadi