ARRUS Journal of Mathematics and Applied Science, Vol. 6 No. 1 (2026) (March 2026) – 7 articles

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A Public Sector Innovation: Determinants analysis of sustainability for Examining the Role of User Impact Mediation in the Dolan Banyumas Application

by Suci Lestari, Tobirin, Arif Muhamad Nurdin, Siti Balqis Huriyah
ARRUS Journal of Mathematics and Applied Science 6(1), 1-12; https://doi.org/10.35877/mathscience4785 - 2026-03-31
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Abstract This study examines the determinants of sustainability of public sector innovation by examining the mediating role of user innovation impact in the Dolan Banyumas application. This study uses a quantitative approach with  the Structural Equation Modeling method based on Partial Least [...] Read more.
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Application of LASSO Regression for the Identification of Underdeveloped Regions in Central Sulawesi

by Muh. Qodri Alfairus, Husnul Amira, Agung Tri Utomo, Nur Abshari Abbas
ARRUS Journal of Mathematics and Applied Science 6(1), 13-19; https://doi.org/10.35877/mathscience4813 - 2026-03-31
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Abstract This study aims to identify the main factors influencing regional underdevelopment in Central Sulawesi through Human Development Index (HDI) modeling and to develop a robust predictive model. To address the challenges of multicollinearity and the limited number of observations (13 [...] Read more.
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Factors Associated with Monocyte and SuPAR Levels in Pulmonary Tuberculosis Patients: A Longitudinal Study

by Lalu Ramzy Rahmanda, Agung Tri Utomo, Nur Ikhwana, Annisa Syalsabila
ARRUS Journal of Mathematics and Applied Science 6(1), 20-28; https://doi.org/10.35877/mathscience4851 - 2026-03-31
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Abstract Tuberculosis in Indonesia had the second highest TB burden globally, after India. 92% of the estimated cases were confirmed to be pulmonary tuberculosis. However, controlling pulmonary tuberculosis relies heavily on accurate diagnosis, appropriate treatment, effective monitoring, and [...] Read more.
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Body Composition Indicators and Cardiovascular Health Score among Young Adults: An Early Cardiovascular Aging Perspective

by Rayhani Ichsan, Nurul Mufidah Damry, Nurul Mutiah Aminuddin, Aida Ayu Chandrawati, Bhirau Wilaksono, Okto Sofyan
ARRUS Journal of Mathematics and Applied Science 6(1), 29-42; https://doi.org/10.35877/mathscience4868 - 2026-03-31
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Abstract This study examined the association between body composition indicators and cardiovascular health score among young adults from an early cardiovascular aging perspective. A cross-sectional analytic study was conducted using de-identified data from 44 young adults, consisting of 35 females [...] Read more.
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Exploration of the Role of Mathematical Connections in Developing Creative Thinking Ability: A Study on Problem-Based Learning

by Nurfaida Tasni, Andi Syukriani, Hamzah Upu
ARRUS Journal of Mathematics and Applied Science 6(1), 43-57; https://doi.org/10.35877/mathscience4888 - 2026-03-31
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Abstract This study aims to explore the role of mathematical connections in developing students' creative thinking abilities through problem-based learning. The research used an exploratory qualitative approach with a case study design involving 6 purposively selected Grade XI high school students. [...] Read more.
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Kaplan–Meier Survival Analysis of Breast Cancer Patients by Estrogen Receptor Status

by Ayu Rahayu
ARRUS Journal of Mathematics and Applied Science 6(1), 58-68; https://doi.org/10.35877/mathscience4862 - 2026-03-31
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Abstract Breast cancer is one of the leading causes of death among women worldwide, making survival analysis essential in evaluating patient survival probabilities. This study aims to estimate the survival function of breast cancer patients based on Estrogen Receptor Status using the nonparametric [...] Read more.
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Forecasting Monthly Red Chili Prices in South Sulawesi Using Prophet Model with Time Series Cross-Validation

by Nur Ikhwana , Agung Triutomo, Annisa Syalsabila, Lalu Ramzy Rahmanda
ARRUS Journal of Mathematics and Applied Science 6(1), 69-76; https://doi.org/10.35877/mathscience4893 - 2026-03-31
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Abstract This study examines monthly red chili price movements in South Sulawesi using the Prophet forecasting model. Daily price data from the National Strategic Food Price Information Center (PIHPS) covering January 2020 to May 2026 were aggregated into 77 monthly observations. Missing values were [...] Read more.
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