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All Journal JURNAL MATEMATIKA STATISTIKA DAN KOMPUTASI Jurnal Sains Dasar PYTHAGORAS: Jurnal Program Studi Pendidikan Matematika AKSIOMA JURNAL ILMIAH MATEMATIKA DAN TERAPAN Indonesian Journal of Applied Statistics MUST: Journal of Mathematics Education, Science and Technology BAREKENG: Jurnal Ilmu Matematika dan Terapan JTAM (Jurnal Teori dan Aplikasi Matematika) MATAPPA: Jurnal Pengabdian Kepada Masyarakat Teorema: Teori dan Riset Matematika Journal of Education Technology JURNAL SILOGISME : Kajian Ilmu Matematika dan Pembelajarannya Jambura Journal of Mathematics Jurnal Matematika UNAND Transformasi : Jurnal Pendidikan Matematika dan Matematika Jurnal Saintika Unpam : Jurnal Sains dan Matematika Unpam Mandalika Mathematics and Educations Journal ESTIMASI: Journal of Statistics and Its Application Majalah Ilmiah Matematika dan Statistika (MIMS) Jambura Journal of Mathematics Education Jambura Journal of Biomathematics (JJBM) Euler : Jurnal Ilmiah Matematika, Sains dan Teknologi Journal of Science and Technology JES-MAT (Jurnal Edukasi dan Sains Matematika) MATHunesa: Jurnal Ilmiah Matematika Pedagogy : Jurnal Pendidikan Matematika METIKS: Jurnal Teknik Mesin, Elektro, Informatika, Kelautan & Sains Research Review: Jurnal Ilmiah Multidisiplin Pattimura International Journal of Mathematics (PIJMath) Jurnal Sintak Jurnal Multidisiplin Sahombu Jurnal Matematika Integratif Sciencestatistics: Journal of Statistics, Probability, and Its Application Parameter: Jurnal Matematika, Statistika dan Terapannya Journal of Mathematics, Computation and Statistics (JMATHCOS) Bilangan: Jurnal Ilmiah Matematika, Kebumian dan Angkasa Algoritma: Jurnal Matematika, Ilmu Pengetahuan Alam, Kebumian dan Angkasa Indonesian Journal of Computational and Applied Mathematics
Agusyarif Rezka Nuha
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Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Automotive Engineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Mechanical Engineering Physics Social Sciences Transportation Other

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Determination of Premium Price for Rice Crop Insurance in Gorontalo Province Based on Rainfall Index with Black Scholes Method Ana Nadiyyah; Emli Rahmi; Salmun K. Nasib; Agusyarif Rezka Nuha; Nisky Imansyah Yahya; La Ode Nashar
Pattimura International Journal of Mathematics (PIJMath) Vol 3 No 2 (2024): Pattimura International Journal of Mathematics (PIJMath)
Publisher : Pattimura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/pijmathvol3iss2pp51-62

Abstract

With its complex topography, Gorontalo Province experiences significant rainfall variations that impact the agricultural sector, particularly rice crops. These variations can cause substantial losses for farmers. One way to address uncertain probabilities caused by rainfall is through agricultural insurance. This research aims to calculate the value of agricultural insurance premiums based on the rainfall index. The Black- Scholes method is used to calculate the premiums, while the Burn Analysis method is employed to determine the rainfall index. The research results classify the rainfall index values in Gorontalo Province into 7 (seven) percentiles. The lowest is at the 20th percentile, with 17.37 mm and a premium value of IDR 1,574,190, while the highest is at the 80th percentile, with 17.65 mm and a premium value of IDR 2,154,574. This indicates that the higher the rainfall, the greater the premium to be paid.
Empirical Mode Decomposition with Swarm-Optimized Support Vector Regression for Natural Gas Price Forecasting Fajar Putrawan Djabar; Agusyarif Rezka Nuha; Siti Nurmardia Abdussamad
Sciencestatistics: Journal of Statistics, Probability, and Its Application Vol. 4 No. 2 (2026): JULY
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/sciencestatistics.v4i2.12276

Abstract

Natural gas is a strategic energy commodity exhibiting nonlinear and highly volatile price movements due to supply-demand fluctuations, market dynamics, and geopolitical influences. These factors complicate accurate forecasting and necessitate advanced methods capable of modeling complex data patterns. This study proposes a hybrid forecasting model that integrates Empirical Mode Decomposition (EMD), Support Vector Regression (SVR), and Particle Swarm Optimization (PSO) to predict natural gas prices and assess predictive performance. The analysis utilizes a dataset of 1,575 daily closing prices from January 2020 to December 2025. EMD decomposes the original time series into seven Intrinsic Mode Functions (IMFs) and one residual component. Each component is modeled using SVR with a Radial Basis Function (RBF) kernel, and PSO is used to optimize model parameters. Forecasting performance is evaluated using Mean Absolute Percentage Error (MAPE) across three data partitioning schemes. Results indicate that the 70:15:15 partition yields the most accurate model, achieving a MAPE of 2.2641%. The 90-day forecast projects a gradual decline in natural gas prices after a peak in mid-January 2026, followed by relative price stability through March 2026. These findings suggest that the hybrid EMD-SVR-PSO model effectively captures the nonlinear dynamics of natural gas price data and delivers accurate forecasts, positioning it as a valuable decision-support tool for policymakers, industry stakeholders, and investors.
Analysis of Premium Reserves in Whole Life and Term Life Insurance Using the New Jersey Prospective Method Cabelita Husuna; Novianita Achmad; Agusyarif Rezka Nuha; Nisky Imansyah Yahya; Muhammad Yahya Ayyasy
Parameter: Jurnal Matematika, Statistika dan Terapannya Vol 4 No 3 (2025): Parameter: Jurnal Matematika, Statistika dan Terapannya
Publisher : Jurusan Matematika FMIPA Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/parameterv4i3pp509-520

Abstract

Human life is constantly exposed to risks such as illness, accidents, and death, which create financial uncertainties for individuals and families. Life insurance serves as an essential financial instrument to mitigate these risks by transferring potential liabilities to insurance companies. This study analyzes premium reserves for whole life and term life insurance using the New Jersey Prospective Method, applying a 6% interest rate and the 2023 Indonesian Mortality Table (TMPI) as the basis of calculation. Actuarial commutation functions are employed to compute annuity values, single net premiums, annual net premiums, and reserve allocations across different ages. The results indicate that reserve values increase with age, reflecting higher mortality risks, with whole life insurance showing a sharper escalation compared to term life insurance. The New Jersey Prospective Method demonstrates accuracy and consistency in reserve estimation, particularly by setting zero reserves in the first policy year, thereby supporting initial liquidity. These findings highlight the method’s effectiveness in maintaining financial stability and readiness of insurance companies to meet future claims and long-term obligations to policyholders.
KEMAMPUAN KOMUNIKASI TULIS DALAM PEMECAHAN MASALAH MATEMATIS SISWA KELAS VIII SMP NEGERI 16 GORONTALO Ferawati Mardjun; Majid Majid; Agusyarif Rezka Nuha
Pedagogy: Jurnal Pendidikan Matematika Vol. 11 No. 2 (2026): Pedagogy : Jurnal Pendidikan Matematika
Publisher : Universitas Cokroaminoto Palopo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30605/ne714580

Abstract

Kemampuan komunikasi tulis merupakan keterampilan penting yang harus dimiliki siswa untuk menyelesaikan permasalahan matematis, khususnya pada materi SPLDV. Namun, kemampuan komunikasi tulis siswa belum berkembang secara maksimal. Penelitian ini bertujuan untuk mendeskripsikan kemampuan komunikasi tulis siswa dalam pemecahan masalah matematis berdasarkan tahapan Polya dan indikator completeness, clarity, simplicity, dan correctness. Penelitian ini menggunakan metode kualitatif deskriptif dengan jenis studi kasus pada siswa kelas VIII SMP Negeri 16 Gorontalo. Subjek penelitian terdiri atas enam siswa yang dipilih berdasarkan kategori kemampuan komunikasi tulis tinggi, sedang, dan rendah. Instrumen penelitian meliputi tes kemampuan komunikasi tulis, wawancara semi-terstruktur, dan dokumentasi. Data dianalisis menurut Miles dan Huberman yaitu reduksi data, penyajian data, dan penarikan kesimpulan, sedangkan keabsahan data diuji melalui triangulasi teknik. Hasil penelitian menunjukkan bahwa siswa kategori tinggi mampu menyajikan penyelesaian secara relatif lengkap, jelas, sederhana, dan tepat, meskipun masih terdapat kekurangan pada beberapa bagian tertentu. Siswa kategori sedang mampu menyelesaikan masalah, tetapi belum konsisten dalam kelengkapan langkah, keterurutan penyelesaian, serta ketepatan simbol dan perhitungan. Sementara itu, siswa kategori rendah belum mampu menampilkan penyelesaian secara utuh sehingga indikator komunikasi tulis belum tampak secara optimal. Dengan demikian, kemampuan komunikasi tulis berperan penting dalam mendukung kualitas pemecahan masalah matematis siswa.
Pengembangan Media Pembelajaran Interaktif Berbasis Geogebra Yang Menggabungkan Visualisasi Dan Evaluasi Quizzep Pada Materi Fungsi Kuadrat Di SMA Negeri 2 Limboto Mutmaina D. Maku; Perry Zakaria; Agusyarif Rezka Nuha
Jurnal Silogisme : Kajian Ilmu Matematika dan Pembelajarannya Vol 11 No 1 (2026): Juni
Publisher : Universitas Muhammadiyah Ponorogo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24269/silogisme.v11i1.13974

Abstract

Pembelajaran fungsi kuadrat masih mengandalkan buku cetak dan papan tulis sehingga siswa mengalami kesulitan dalam memahami konsep grafik parabola. Penelitian ini bertujuan untuk mengembangkan media interaktif berbasis GeoGebra terintegrasi QuizZep serta menguji validitas dan kepraktisannya. Metode yang digunakan adalah penelitian pengembangan model 4D yang dilaksanakan hingga tahap pengembangan. Uji coba melibatkan satu guru matematika dan dua puluh siswa kelas X.5 di SMA Negeri 2 Limboto. Data dikumpulkan melalui lembar validasi ahli dan angket respon pengguna. Hasil penelitian menunjukkan bahwa media Adventure of Quadratic memperoleh tingkat validitas sebesar 87,5% dengan kategori sangat valid. Tingkat kepraktisan oleh guru mencapai 100%, sedangkan respon siswa memperoleh rata-rata 93,6%. Rata-rata keseluruhan sebesar 96,8% menunjukkan bahwa media tergolong sangat praktis. Dengan demikian, media yang dikembangkan valid dan praktis digunakan dalam pembelajaran fungsi kuadrat di SMA
Co-Authors Abdul, Nur Safitri Abubakar, Agung Sucipto Adib Rizal Kundju Agung, Andi Aliwu, Randa Resvitasari Ana Nadiyyah Andi Agung Andi Agung Anggraini, Fitriana Anissa Dwi Wijayanti Aprina Manggarai Armayani Arsal Armayani Arsal Armayani Arsal Asriadi Asriadi Asriadi Asriadi Asriadi Asriadi Asriadi Asriadi Aswata Wisnuadji Bela Cintiya Samwan Bertu Rianto Takaendengan Biga, Azril Saputra Cabelita Husuna Chasanah, Sri Istiyarti Uswatun Dewi Rahmawaty Isa Djibran, Fahrudin Djihad Wungguli Djuma, Clara Anggriani Eko Sulistyono Sulistyono Fajar Putrawan Djabar Fajri Ikhsan Feni Elliyin Ferawati Kai Ferawati Mardjun Franky Alfrits Oroh Ghivahri Sidik Mokoagow Hasan S. Panigoro Hasan S. Panigoro Hasan, Riyanto Hendri, Excel Muhammad Hinelo, Ikrar Prasetyo Ibrahim, Novita Ipal Rahmat Jaya Ismail Djakaria Isran K Hasan Janna, Miftahul K. Nasib, Salmun Kasim, Ranan La Ode Nashar La Ode Nashar La Ode Nashar Lailany Yahya Lailany Yahya Laita, Nazrilla Hasan Lindrawati Abdjul Mahmud, Sri Lestari Majid Majid Melasarah Deswita Rahmadi Miftahul Huda Moh Dody Afandi Rauf Mohamad, Regina Mohammad Dwitiar Nalole Muhammad Ikhlas Muhammad Rifai Katili Muhammad Yahya Ayyasy Mutmaina D. Maku Nento, Abdul Djabar Nina Valentika Nisky Imansyah Yahya Nisky Imansyah Yahya Nisky Imansyah Yahya Novianita Achmad Nur Siyam Djibu NUR ’AIN SUPU Nursiya Bito Nurwan Nurwan NURWAN NURWAN Nurwan Nurwan Nurwan, Nurwan Pakaya, Revandi S. Patra Lasantu Perry Zakaria Rahman, Gusti Arviana Rahmi, Emli Randy Ferdiansyah Rasmawati Rasmawati Rasyid, Kamelia Rauf, Moh Dody Afandi Resmawan Resmawan Rozikin, Muhammad Rusniwati S. Imran Salmun K. Nasib Saltina, Saltina Sari, Lia Nanda Sidik Susilo Sigar, Leidi Siti Nurmardia Abdussamad Siti Nurmardia Abdussamad Sri Istiyarti Uswatun Chasanah Sri Istiyarti Uswatun Chasanah Sri Lestari Mahmud Sri Meylanti S. Ali Suci Tilome Sugito Mahendra Imran Syafrudin, Marisa Syarif Abdullah Taulia Damayanti Usfita Kiftiyani Usman, Nunung Usman, Sri Adiningsi B. Valentika, Nina Wafa, Moh. Shohibul Widyastutifajri Nuha Yazid Rukmayadi Zaqiyah, Arfatuz