Article Per Year (5 Year)
p-Index From 2021 - 2026
0.444
P-Index
This Author published in this journals
All Journal FARABI: Jurnal Matematika dan Pendidikan Matematika Journal of Mathematics, Computation and Statistics (JMATHCOS)
Sahrudin Sahrudin
Universitas Islam Negeri Sumatera Utara
Computer Science & IT Decision Sciences, Operations Research & Management Mathematics

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
Pengaruh Mobilitas Penduduk Terhadap Penyebaran HIV dengan Menerapkan Model Seir Sahrudin Sahrudin; Dwi Andini; Sandrina Malakiano Ritonga; Intan Janurianty; Ade Widya
FARABI: Jurnal Matematika dan Pendidikan Matematika Vol 8 No 1 (2025): FARABI: Jurnal Matematika dan Pendidikan Matematika
Publisher : Program Studi Pendidikan Matematika FKIP UNIVA Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47662/farabi.v8i1.1019

Abstract

Human Immunodeficiency Virus (HIV) is a virus that causes Acquired Immunodeficiency Syndrome (AIDS). This virus attacks the immune system by destroying one of its important elements, namely white blood cells known as T lymphocytes or lymphocyte cells. This study aims to analyze the influence of population mobility on the spread of HIV in North Sumatra Province using the SEIR (Susceptible, Exposed, Infected, Recovered) model. The data used includes the population and new HIV cases in 2023 in 33 districts/cities in this region. The SEIR model was modified to take into account the level of population mobility to calculate the disease transmission rate. The results of the analysis show that areas with high levels of mobility, such as Medan and Deli Serdang, have a significant number of new HIV cases, 1,200 and 144 cases respectively. In contrast, areas with small populations and low mobility, such as Pakpak Bharat and North Nias, recorded low or no HIV cases. This research shows a correlation between population mobility and the spread of HIV, so prevention strategies are needed that focus on areas with high levels of mobility.
Robust Multi-Criteria Optimization for Energy Stocks Selection on the Indonesian Stock Exchange Using a Weighted Scoring Model Sahrudin Sahrudin; Hendra Cipta
Journal of Mathematics, Computations and Statistics Vol. 9 No. 3 (2026): Volume 09 Issue 03 (September 2026)
Publisher : Jurusan Matematika FMIPA UNM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35580/j2sk2n30

Abstract

Pemilihan saham terbaik merupakan masalah pengambilan keputusan multi-kriteria yang dipengaruhi oleh ketidakpastian data keuangan. Studi ini bertujuan untuk menentukan saham terbaik di sektor energi yang terdaftar di Bursa Efek Indonesia menggunakan Weighted Scoring Model (WSM) dan pendekatan Robust Multi-Criteria Optimization. Studi ini menggunakan lima kriteria fundamental, yaitu Laba Per Saham (EPS), Rasio Harga terhadap Laba (PER), Return on Equity (ROE), Rasio Utang terhadap Ekuitas (DER), dan Dividend Yield (DY). Bobot kriteria ditentukan berdasarkan tingkat pertumbuhannya selama periode observasi, diikuti dengan normalisasi dan perhitungan nilai preferensi menggunakan WSM. Pendekatan robust diterapkan pada tingkat ketidakpastian ±5%, ±10%, dan ±15%. Hasil menunjukkan bahwa ITMG menempati peringkat pertama dalam model deterministik dengan nilai preferensi 0,4722 dan mempertahankan peringkat pertama di semua skenario robust. Hasil ini menunjukkan bahwa ITMG adalah alternatif saham terbaik dan menunjukkan ketahanan terhadap perubahan data dalam tingkat ketidakpastian yang diuji.
Co-Authors Ade Widya Dwi Andini Hendra Cipta Intan Janurianty Sandrina Malakiano Ritonga