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All Journal Pendidikan Matematika BAREKENG: Jurnal Ilmu Matematika dan Terapan Jambura Journal of Mathematics Jurnal Pengabdian Masyarakat Multidisiplin Unri Conference Series: Community Engagement Euler : Jurnal Ilmiah Matematika, Sains dan Teknologi Journal of Fundamental Mathematics and Applications (JFMA) SAINSTEK Jurnal Matematika Integratif
Rike Marjulisa
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Aerospace Engineering Humanities Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology 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 Immunology & microbiology Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences Transportation Other

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PENGARUH PENERAPAN STRATEGI PEMBELAJARAN AKTIF TIPE COLLEGE BALL TERHADAP PEMAHAMAN KONSEP MATEMATIS SISWA KELAS XI IPS SMA ADABIAH 2 PADANG Marjulisa, Rike; Rismen, Sefna; Mardiyah, Ainil
Pendidikan Matematika Vol 1, No 1 (2014): Jurnal Wisuda Ke 48 Mahasiswa Prodi Pendidikan Matematika
Publisher : STKIP PGRI Sumbar

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Abstract

ABSTRACT This research was conducted based on the fact indicating that the students’ understanding on mathematic concept was still low, the students seemed to be less active and unable to complete the tasks given by themselves. The aim of this research was to improve the students’ activity and understanding on mathematic concept by using College Ball strategy in class XI IPS of SMA Adabiah 2 Padang. This was an experimental research whose sample was chosen by random. The instruments of the research were observation sheets and a test on the students’ understanding on mathematic  concept with reliability r11= 0,91. The result of the research revealed that after the strategy applied, the students’ activity improved, and their understanding on mathematic  concept was better than that of students treating by using conventional learning strategy. This could be seen from the P-Value (0,001) which was smaller than α (0,05), Thus it was concluded that the use of College Ball strategy could improve the students’ understanding on mathematic concept better than that of the conventional learning.
Metode Newton-Cotes Tertutup Terkoreksi Berdasarkan Turunan Rata-Rata Aritmatika Rike Marjulisa; Muhammad Natsir
Sainstek (e-Journal) Vol. 9 No. 2 (2021)
Publisher : Sekolah Tinggi Teknologi Pekanbaru

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Abstract

Pada makalah ini dibahas metode Newton-Cotes tertutup terkoreksi berdasarkan turunan rata-rata aritmatika yang merupakan modifikasi dari metode Newton-Cotes tertutup terkoreksi. Metode ini dimofikasi dengan tujuan untuk memperoleh metode yang menghasilkan solusi hampiran yang mendekati solusi eksak dalam mengaproksimasi integral tentu.. Bentuk eror diperoleh dengan menggunakan konsep ketelitian antara kuadratur dan nilai eksak. Selanjutnya hasil komputasi menunjukkan bahwa metode yang diajukan menghasilkan eror lebih kecil daripada metode Newton-Cotes tertutup terkoreksi.
Aturan Titik Tengah \textit{Double} untuk Mengaproksimasi Integral Riemann-Stieltjes Rike Marjulisa; Imran M
Jurnal Matematika Integratif Vol 19, No 1: April 2023
Publisher : Department of Matematics, Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (327.018 KB) | DOI: 10.24198/jmi.v19.n1.45399.29-39

Abstract

Aturan titik tengah double dimodifikasi untuk mengaproksimasi integral RiemannStieltjes. Koefisien dari metode ini didapat dengan menyelesaikannya sistem persamaan nonlinear yang didapat dari penerapan fungsi monomial sampai pangkat tertentu. Selanjutnya dibahas bentuk error dari metode yang diusulkan. Pada bagian akhir diberikan hasil komputasi numerik dari metode yang diusulkan dan dibandingkan dengan metode-metode sebelumnya.
MODIFIED HOUSEHOLDER METHOD OF FIFTH ORDER OF CONVERGENCE AND ITS DYNAMICS ON COMPLEX PLANE Putri, Ayunda; Imran, M; Marjulisa, Rike
Journal of Fundamental Mathematics and Applications (JFMA) Vol 6, No 2 (2023)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jfma.v6i2.20554

Abstract

In this paper, a modified Householder method of fifth order is proposed for solving nonlinear equations. The modification is done by adapting a cubic interpolation polynomial to approximate the second derivative in the Householder method. Weprovide a theorem to prove the order of convergence of the proposed method. The simulations reveal that the proposed method needs fewer iterations, even with challenging initial guesses, and excels in sending a large portion of initial points to convergence and exhibits rapid convergence.
Optimalisasi Kinerja Aparat Desa di Desa Mekong Melalui Pelatihan Teknologi Informasi Gemawati, Sri; Marjulisa, M Rike; Putri, Ayunda; Ali, Irsan Taufik; Rasdana, Oki
Unri Conference Series: Community Engagement Vol 6 (2024): Seminar Nasional Pemberdayaan Masyarakat
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/unricsce.6.389-393

Abstract

In the digital era, skills in using Microsoft Office are very important for village officials. This is the background of the Microsoft Office training for village officials in Desa Mekong, Kecamatan Tebing Tinggi Barat, Kepualauan Meranti. The training materials include Microsoft Word, Excel, and Power Point. This training uses the “Learning by Doing” method which allows participants to immediately engage in practice after the presentation of the material. Participating village officials showed significant improvement in knowledge and skills using Microsoft Office. The enthusiasm of the participants and the assistance by the students also enriched the learning process, making it more interactive and in-depth. This training has positive implications for improving the competence of village officials and the quality of public services in Desa Mekong.
T-IDEAL AND α-IDEAL OF BP-ALGEBRAS Gemawati, Sri; M, Musraini; Putri, Ayunda; Marjulisa, Rike; Fitria, Elsi
BAREKENG: Jurnal Ilmu Matematika dan Terapan Vol 18 No 2 (2024): BAREKENG: Journal of Mathematics and Its Application
Publisher : PATTIMURA UNIVERSITY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/barekengvol18iss2pp1129-1134

Abstract

This paper explores the characteristics of two distinct ideal types within BP-algebra, specifically T-ideal and -ideal. Initially, we elucidate the characteristics of the T-ideal in BP-algebra, establishing its connections with the perfect, normal, and normal ideal in BP-algebra. Subsequently, we demonstrate that the kernel of a homomorphism in BP-algebra constitutes a T-ideal. Moving forward, we delineate the properties of -ideal in BP-algebra, highlighting its relationships with ideal and filter in the context of BP-algebra. Additionally, we explore the characteristics of -ideal and subalgebra in 0-commutative BP-algebra. Finally, it is proven that the kernel of a homomorphism in 0-commutative BP-algebra can be identified as an -ideal.
Arithmetic Mean Derivative-Based Quartet Midpoint Rule Marjulisa, Rike; Putri, Ayunda
Euler : Jurnal Ilmiah Matematika, Sains dan Teknologi EULER: Volume 11 Issue 2 December 2023
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/euler.v11i2.22961

Abstract

A definite integral that is difficult to solve analytically can be calculated using the numerical integration methods. The midpoint rule is a prominent rule for approximating definite integrals. This article discusses a version of the quartet midpoint rule that includes the derivative of the arithmetic mean . The proposed rule increases precision over the previous rules. Furthermore, the error term is obtained by using the concept of precision between quadrature and exact values. Finally, the proposed rule is more effective than the present rule, according to numerical simulation results.
A Four-Step High-Order Iterative Method for Nonlinear Equations with Scientific Applications Putra, Supriadi; Putri, Ayunda; Zulkarnain, Zulkarnain; Marjulisa, Rike; Novita, Devi
Jambura Journal of Mathematics Vol 8, No 1: February 2026
Publisher : Department of Mathematics, Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jjom.v8i1.35161

Abstract

In this paper, we propose a new four-step iterative method for solving nonlinear equations based on a predictor–corrector framework that combines Newton’s, Ostrowski’s, and Householder’s methods. To avoid explicit evaluation of higher derivatives, particularly the second derivative, polynomial interpolation is employed to approximate derivative information in the higher-order step, while retaining first-derivative evaluations where required. The resulting scheme attains an optimal convergence order of fourteen using six function evaluations per iteration. Numerical experiments on several benchmark functions and two classical application problems, namely the computation of libration points and a Fibonacci-type root-finding problem, demonstrate improved accuracy and robust convergence behavior. In the reported tests, the method achieves the expected computational order of convergence and typically converges within a small number of iterations. The convergence properties are further examined through residual errors, step differences, and the observed computational order of convergence.
PELATIHAN MICROSOFT OFFICE UNTUK MENINGKATKAN KOMPETENSI GURU DI DESA MEKONG Sri Gemawati; Musraini, M; Rike Marjulisa; Ayunda Putri; Irsan Taufik Ali
Jurnal Pengabdian Masyarakat Multidisiplin Vol 8 No 1 (2024): Oktober
Publisher : LPPM Universitas Abdurrab

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36341/jpm.v8i1.5253

Abstract

Microsoft Office training for teachers in Mekong Village, West Tebing Tinggi District, aims to enhance teachers' technical competence in using software that is essential for the modern educational process. Skills in Microsoft Word, Excel, and PowerPoint are expected to help teachers optimize the learning process, prepare teaching materials, and carry out administrative tasks more effectively. This training is highly relevant, especially for teachers in remote areas where the use of technology is often limited but very much needed to support more interactive learning and better-organized administration. The training is conducted face-to-face with a combination of lectures and hands-on practice, designed to ensure participants can understand and apply the material well. The training is conducted face-to-face with a combination of lectures and hands-on practice, designed to ensure participants can understand and apply the material well. Teachers are trained in the use of important Microsoft Office features, such as creating mass mailings using mail merge in Word, analyzing student grade data in Excel with formulas like IF, VLOOKUP, and HLOOKUP, and creating interactive presentations in PowerPoint. With this method, the transfer of knowledge and skills occurs optimally, and participants can immediately apply the knowledge they have gained in the context of their daily work. The evaluation of the training results shows a significant improvement in participants' competencies, with an average increase of 25% based on pre-test and post-test results. In conclusion, face-to-face Microsoft Office training has proven effective in enhancing teachers' technical skills. For further development, it is recommended to have advanced training with a longer duration and more in-depth material, so that teachers are better prepared to face technological challenges in the world of education.
OPTIMALISASI PEMBELAJARAN MATEMATIKA SECARA DIGITAL MELALUI WEBSITE MATHEXIA.ORG: OPTIMIZING DIGITAL MATHEMATICS LEARNING THROUGH THE MATHEXIA.ORG WEBSITE Rike Marjulisa; Ayunda Putri; Yusa Putra; Nanditya Syahmi Khan; Devan Aptinsyah
Jurnal Pengabdian Masyarakat Multidisiplin Vol 9 No 1 (2025): Oktober
Publisher : LPPM Universitas Abdurrab

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36341/jpm.v9i1.6879

Abstract

The utilization of digital technology in mathematics learning is very important to improve the quality of the learning process. This service activity aims to introduce and implement Mathexia.org, a digital question bank website, for he Senior High School Mathematics Teacher Forum (MGMP) of Pelalawan Regency. This platform allows teachers to input questions and materials, access question banks between schools, and organize token and time-based exams. Students can access materials, take exams, view results, and review questions for further study. Implementation methods included teacher training and the use of a student questionnaire with a four-point Likert scale, which was analyzed descriptively quantitatively. Results from 140 students showed positive improvements in learning motivation, digital literacy, and effectiveness of material comprehension after using Mathexia.org. This activity proves that this website can be an innovative solution in supporting more modern math learning in Kabupaten Pelalawan.  
Co-Authors Ainil Mardiyah Ayunda Putri Ayunda Putri Devan Aptinsyah Elsi Fitria IRSAN TAUFIK ALI M. Imran Muhammad Natsir Musraini M Musraini, M Nanditya Syahmi Khan Novita, Devi Oki Rasdana Sefna Rismen Sri Gemawati Supriadi Putra Yusa Putra Zulkarnain Zulkarnain