ARRUS Journal of Mathematics and Applied Science, Vol. 4 No. 2 (2024) (December 2024) – 9 articles

This issue has been available online for the regular issue of Vol. 4 No. 2 (2024). All accepted articles in this issue were authored/co-authored from 1 countries (Indonesia).

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Geographically Weighted Regression with Bi-Square Kernel Weights for Life Expectancy Data in East Java Province

by Sitti Masyitah Meliyana, R. Rusli, Abdul Rahman
ARRUS Journal of Mathematics and Applied Science 4(2), 56-62; https://doi.org/10.35877/mathscience3396 - 2024-12-31
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Abstract This study explores the application of Geographically Weighted Regression (GWR) using a Bi-Square Kernel weighting function to analyze life expectancy data across East Java Province. By incorporating spatial heterogeneity, the GWR model provides more accurate and localized insights compared [...] Read more.
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Mathematical Representation Ability of Algebraic Form Material of Class VII Students at SMPN 7 Makassar

by R. Rusli, Awi Dassa, Nurafni Pebrianty, Hastuty Musa
ARRUS Journal of Mathematics and Applied Science 4(2), 63-68; https://doi.org/10.35877/mathscience3402 - 2024-12-31
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Abstract This study aims to determine how the mathematical representation ability of seventh grade students at SMPN 7 Makassar in solving algebraic form problems. This type of research is qualitative research with a descriptive approach. The subjects of this study were 3 students from class VII.8 [...] Read more.
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The Influence of the Self-Directed Learning Approach on the Independence and Learning Outcomes of Grade 10 Students at SMAN 2 Bulukumba in Mathematics Learning

by Abdul Rahman, Sutamrin, Ade Irma Zetyani Syakir
ARRUS Journal of Mathematics and Applied Science 4(2), 69-77; https://doi.org/10.35877/mathscience3411 - 2024-12-31
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Abstract This research aims to determine the influence of the Self-Directed Learning approach on the independence and learning outcomes of grade 10 students at SMAN 2 Bulukumba in mathematics learning. This research is a pre-experimental study using a one-group pre-test-post-test method. The [...] Read more.
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Forecasting the Total of Paddy Production in Indonesia Using Time Series Regression Model

by Ahmad Rizky Kesuma, Meiliyani Siringoringo, Siti Mahmuda
ARRUS Journal of Mathematics and Applied Science 4(2), 78-88; https://doi.org/10.35877/mathscience3175 - 2024-12-31
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Abstract Time series regression (TSR) is a forecasting model that can be used when there are trend and seasonal patterns. Paddy is a source of rice, which is a staple food for the Indonesian people. Paddy has a seasonal pattern because its cultivation depends on the rainy season. This study forecasts [...] Read more.
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The Modeling Maximum Water Level in Sangkuliman East Borneo using Singular Spectrum Analysis

by Andrea Tri Rian Dani, Mislan Mislan, Fachrian Bimantoro Putra
ARRUS Journal of Mathematics and Applied Science 4(2), 89-98; https://doi.org/10.35877/mathscience2945 - 2024-12-31
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Abstract Penelitian ini bertujuan untuk memodelkan rata-rata tinggi muka air maksimum di danau Sangkuliman dengan menggunakan data runtun waktu yang dikumpulkan sejak Januari 2015 – Desember 2022. Metode yang digunakan adalah Singular Spectrum Analysis (SSA). SSA adalah salah satu metode analisis [...] Read more.
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Metabolite-Group Selection On Temu Ireng (Curcuma Aeruginosa) Contains Related To Toxicity Activity By Using Group Lasso Regression

by Rahmat H S, Farit Mochamad Afendi, Hari Wijayanto
ARRUS Journal of Mathematics and Applied Science 4(2), 99-107; https://doi.org/10.35877/mathscience3626 - 2024-12-31
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Abstract Metabolites are expressed in mass-to-charge ratio (m/z) on mass spectrometry experiments. They can be identified more than once. Some of m/z representing same metabolites can be considered as a group of metabolites. Evaluation of metabolite effects can be considered based on the groups. [...] Read more.
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The Analysis of Students' Creative Thinking Abilities in View of Mathematics Anxiety Levels in Class IX of Junior High Schools

by Indah Sari, Abdul Rahman, Rosidah
ARRUS Journal of Mathematics and Applied Science 4(2), 108-117; https://doi.org/10.35877/mathscience3625 - 2024-12-31
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Abstract This research is qualitative research with phenomenological research methods. Phenomenological research is a type of qualitative research that deeply examines individuals' explanations and understandings of their experiences. The subjects of this study were 4 (four) grade IX students. Data [...] Read more.
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Bifurcation Analysis of an Infectious Respiratory Disease with Lockdown and Social Distancing

by Henry Wanjala, Mark Okongo, Jimrise Ochwach
ARRUS Journal of Mathematics and Applied Science 4(2), 118-134; https://doi.org/10.35877/mathscience3033 - 2024-12-31
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Abstract This paper analyzes the impact of lockdown, social distancing, and isolation of symptomatic patients on the transmission of infectious respiratory diseases. The study uses predictive mathematical models to explore disease progression and evaluate control strategies. The results show that the [...] Read more.
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Comparison of R-Forecasting and V-Forecasting Singular Spectrum Analysis in Forecasting Farmers' Exchange Rates in Indonesia

by Muhammad Fahmuddin S., Ruliana, Ahmad Imdad
ARRUS Journal of Mathematics and Applied Science 4(2), 135-149; https://doi.org/10.35877/mathscience3905 - 2024-12-31
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Abstract Indonesia is an agricultural country where one of the main sources of income comes from the agricultural sector. One of the indicators often used to assess farmer welfare is the Farmer Exchange Rate (FER) index. Research on FER forecasting using the Singular Spectrum Analysis (SSA) method [...] Read more.
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