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All Journal Jurnal Pendidikan Matematika Jurnal Pendidikan Matematika dan IPA Tadris: Jurnal keguruan dan Ilmu Tarbiyah AL-TA´LIM JURNAL ILMIAH PENDIDIKAN FISIKA AL BIRUNI Indonesian Journal of Science and Technology Al-Jabar : Jurnal Pendidikan Matematika JMPM: Jurnal Matematika dan Pendidikan Matematika PRISMA Desimal: Jurnal Matematika MUST: Journal of Mathematics Education, Science and Technology Triple S (Journals of Mathematics Education) International Journal of Supply Chain Management Jurnal Pengabdian Magister Pendidikan IPA Al-Ta'lim Transformasi : Jurnal Pendidikan Matematika dan Matematika Sehat Rakyat: Jurnal Kesehatan Masyarakat Islamic Journal of Integrated Science Education International Journal of Applied Mathematics, Sciences, and Technology for National Defense Mathematics Education Journal
Muhamad Syazali
Universitas Pertahanan
Religion Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Dentistry Earth & Planetary Sciences Education Electrical & Electronics Engineering Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Mathematics Medicine & Pharmacology Nursing Physics Public Health Social Sciences Transportation Veterinary Other

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Daily Profit Analysis: Daily Productivity Scheduling with Multiple Linear Regression Putra, Fredi Ganda; Syazali, Muhamad
Desimal: Jurnal Matematika Vol. 3 No. 3 (2020): Desimal: Jurnal Matematika
Publisher : Universitas Islam Negeri Raden Intan Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/djm.v3i3.11451

Abstract

The purpose of this study was to see which day factors (Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday) had the greatest impact on the net income of a store. The method used is a quantitative method using multiple linear analysis. The results show that Monday is the most influential on profits
SAVI and DLPS learning models on mathematical problem solving Syazali, Muhamad; Afandi, Kiki; Ramadhani, Rahmi
Desimal: Jurnal Matematika Vol. 5 No. 1 (2022): Desimal: Jurnal Matematika
Publisher : Universitas Islam Negeri Raden Intan Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/djm.v5i1.12810

Abstract

Problem-solving ability is an skills related to mathematical characteristics which instructors need to encourage educators to be able to solve problems. This process certainly uses the right learning model to reach the target in accordance with the curriculum. This study aims to compare the influence of Somatic, Auditory, Visualization, and Intellectually (SAVI) and Double-loop Problem-solving (DLPS) methods in influencing mathematical problem solving skills. This study uses quantitative types with data analysis techniques using the T test. The results of this study are that there is an average value in the SAVI learning model of 77.7 while the average value of the DLPS learning model is 77.3. The conclusion can be drawn that the SAVI and DLPS learning models have the same effect on problem solving skills. 
The optimal portfolio of islamic stocks using the markowitz and black-litterman models Azis, Irfani; Syazali, Muhamad; Manurung, Elise Nathalia
Desimal: Jurnal Matematika Vol. 6 No. 1 (2023): Desimal: Jurnal Matematika
Publisher : Universitas Islam Negeri Raden Intan Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/djm.v6i1.14499

Abstract

The portfolio with the best combination of profit and risk or the investor's choice is called the optimal portfolio. The Black-Litterman and Markowitz models were used to determine the optimal portfolio during the covid-19 pandemic. Sharia stock data, that is consistent with the Jakarta Islamic Index for the 2019-2021 period, is used in this research. The stock combination of the Markowitz model is better than the Black-Litterman model. The expected value of the portfolio obtained is 0.0066, which is greater than the risk-free asset return of 0.0011 on the day of broadcast. The portfolio risk of the Markowitz model is smaller than the Black-Litterman model, which are 0.0010972 and 0.0013917, respectively. so it can be said that the Markowitz model is better than the Black-Litterman model in the formation of a Sharia stock portfolio during the covid-19 pandemic.
The estimation of the hazard function of earthquakes in aceh province with likelihood approach Maulidi, Ikhsan; Novika, Fanny; Mahmudi, Mahmudi; Apriliani, Vina; Syazali, Muhamad
Desimal: Jurnal Matematika Vol. 7 No. 3 (2024): Desimal: Jurnal Matematika
Publisher : Universitas Islam Negeri Raden Intan Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/djm.v7i3.21489

Abstract

In this article, we propose a novel application of the single decrement method with a likelihood approach to estimate the hazard function of earthquake events in Aceh province. While this method has traditionally been used in actuarial sciences for mortality table estimation, its application in seismic hazard estimation represents a new perspective in the field of earthquake risk analysis. To enhance the accuracy of the model, we applied the Box-Cox transformation to normalize the data and used simple regression to formulate the hazard function. Our results demonstrate that a cubic equation provides a more accurate model compared to linear and quadratic equations, as evidenced by the lower Mean Square Error (MSE). This study offers a new approach to hazard rate estimation that surpasses conventional methods by providing more informative and interpretable results for earthquake risk assessment.
Bibliometric analysis: Spatial skills and gender in education Raditya, Aji; Syazali, Muhamad
Desimal: Jurnal Matematika Vol. 7 No. 1 (2024): Desimal: Jurnal Matematika
Publisher : Universitas Islam Negeri Raden Intan Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/djm.v7i1.23211

Abstract

Spatial skills, the ability to perceive, understand, and manipulate shapes and spatial relationships, are fundamental to human cognition and have a significant impact on success in STEM (Science, Technology, Engineering, and Mathematics) career. The purpose of this study is to analyze the scientific research related to spatial skills and gender in education on Scopus database. This research also reveals the current research trends and research gaps on this subject. Bibliometric analysis is used to answer those objectives, with platforms such as R packages (Bibliometrix) and Vos Viewer software to help the analysis. This study addresses four research issues as follows: (i) the landscape of research on spatial skills and gender; (ii) the leading countries and institutions on spatial skills and gender research; (iii) the most cited journal; and (iv) the most cited authors; (v) the most cited articles; (vi) the most popular and least popular keywords.
Teaching and learning mathematics with problem solving approach: Learning activities and instructional practice Noura, Karim; Pradana, Kenny Candra; Syazali, Muhamad
Desimal: Jurnal Matematika Vol. 8 No. 1 (2025): Desimal: Jurnal Matematika
Publisher : Universitas Islam Negeri Raden Intan Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/djm.v8i1.26004

Abstract

This study examined the implementation of problem-solving-based learning in mathematics education within schools in Victoria, Australia. It aimed to evaluate its effectiveness in enhancing students' critical, logical, and creative thinking skills while identifying challenges in integrating this approach into the curriculum. A qualitative descriptive method was employed, involving literature review, classroom observations, and informal interviews with teachers and students. Data collection focused on exploring instructional practices and their alignment with curriculum objectives. Results indicated that problem-solving activities fostered conceptual understanding and practical application of mathematics in real-life scenarios. Examples, such as measuring distances using average steps and solving optimization problems, demonstrated increased student engagement and comprehension of mathematical concepts. However, challenges included teachers' limited understanding of problem-solving strategies, insufficient resources, and language barriers in interpreting real-world problems. Despite these obstacles, integrating structured activities and diverse instructional strategies proved to be a promising method for improving mathematical learning outcomes. These findings underscore the importance of aligning pedagogical practices with curriculum goals to enhance mathematics education.
The conceptual model to improve failure risk management water distribution system using ordinary differential equation model to support water resilience in military residential facilities Al Husein, Fulkan Kafilah; Syazali, Muhamad; Saidat, Suhaila; Irsalinda, Nursyiva; Farid, Fajri
International Journal of Applied Mathematics, Sciences, and Technology for National Defense Vol 2, No 3 (2024): International Journal of Applied Mathematics, Sciences, and Technology for Natio
Publisher : FoundAE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58524/app.sci.def..v2i3.341

Abstract

Water resilience is still big problem in Indonesia.  In border and underdeveloped areas in Indonesia, the use of water sources is still considered not resilience. Especially in military context, where water needs are bigger and also more fundamental, this water resilience problem demanding a comprehensive solution. To address this issue, this research proposes the use of ordinary differential equations as a mathematical tool to model the dynamics of system damage over time, consumption, maintenance scheme, water crisis scheme, and other factors affecting water distribution resilience in military facilities. This journal presents a conceptual model of failure risk management water distribution system using a differential equation model approach to support water resilience. Specifically, the derivation of failure equation in the “reliability and maintenance system technical” textbook will be the basic reference for generating mathematical model. It is used because our model will be focused in improving failure risk management. By using the model, there are a lot of problem will be tackled such as Identify and manage failure risks in the water supply system, design an efficient water distribution maintenance scheme, and predict how strong the system to face water crisis. But before the model applied, the prediction of model will be tested by applying it in form of computer program. The case study of this research will be focused in testing the model in form of computer program with some simplicity and assumption. Through this approach, it is expected to find solutions that improve water usage efficiency, support the well-being of military personnel, and contribute to national water resilience to bolster national defense especially in case of water crisis happened. This research holds significant benefits for scientific advancement by providing a conceptual model that can serve as a reference for future research. It has the potential to make a tangible contribution but also still need so much development especially for application in real data, adding others variables that can be included for next research, conducting the interpretation, and better defining the measurement boundaries.
Integration of Qur'anic Values in Mathematics Learning: A Bibliometric Analysis Lestari, Fitria; Farid, Fajri; Syazali, Muhamad; Putra, Fredi Ganda; Maulidi, Ikhsan; Apriliani, Vina
Islamic Journal of Integrated Science Education (IJISE) Vol. 4 No. 2 (2025): July
Publisher : Program Studi Tadris IPA, Fakultas Tarbiyah (IAIN) Kediri, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30762/ijise.v4i2.5921

Abstract

The integration of Qur'anic values in learning is an increasingly popular field in Education, therefore this research aims to determine the integration of Qur'anic values in Mathematics Learning This research uses a descriptive qualitative method through literature study research techniques. The data obtained based on 12 journal articles analyzed is based on a critical analysis of the available literature (articles based on scientific novelty content from 2017 to 2024 indexed on Google Scholar) data analysis techniques using VOS viewer software version 1.6.16 for graphical bibliometric mapping. Based on the data obtained Research shows the importance of combining Islamic values with mathematics to build character and advance education. Various models are proposed to integrate mathematical concepts from the Quran, such as numbers, relationships, operations, and measurements, in learning. This integration not only improves students' understanding of mathematics, but also creates a well-rounded educational experience. Therefore, it is highly recommended for teachers to teach mathematics by integrating with the values or verses of the Quran. So that students feel that learning mathematics useful for the development of student competencies.
Co-Authors Abd. Rasyid Syamsuri Abdurahman Abdurrahman Abdurrazzaq, Achmad Achi Rinaldi Adi, Langit Cahya Afandi, Kiki Aisyah, Mutiara Aghnyn Aji Arif Nugroho Al Husein, Fulkan Kafilah Alkahfi, Cahya Amarullah, M Ridhwan Amir Machmud, Amir Andika Eko Prasetiyo Andika Eko Prasetiyo, Andika Eko Antomi Saregar Avissa Purnama Yanti Avissa Purnama Yanti, Avissa Purnama Azis, Irfani Azzahra, Kirana Bella Dwi Lestari Chandra, Yoshua Dewi, Eva Sima Dian Purnama Sari Dian Purnamasari Dixit, Aparna Elise Nathalia Manurung Endah Kinarya Palupi Eva Sima Dewi Farid, Fajri Farida Farida Farida, Farida Fitria Lestari Fredi Ganda Putra Hasan Said Tortop Hasan Said Tortop Hermana, Nabila Swarna Puspa Iip Sugiharta Ikhsan Maulidi Irfani Azis Irfani Azis Irsalinda, Nursyiva Irzaman, Irzaman Jermsittiparsert, Kittisak Junoh, Ahmad Kadri bin Kenny Candra Pradana Kiki Afandi Kittisak Jermsittiparsert Kittisak Jermsittiparsert Lailatul Siamy Lestari, Bella Dwi Lingga Afriansyah Mardani Lintang Fitra Utami Lusi Anggraini Lusi Anggraini Mahmudi Mahmudi Manurung, Elise Nathalia Mardani, Lingga Afriansyah Maskur, Ruhban Masykur, Rubhan Maulidi, Ikhsan Mohammad Liwa Ilhamdi Muawanah Muawanah Mujib Mujib Mujib Mujib, Mujib Nanang Supriadi Nilawati Tadjuddin Nina Valentika Nining Ratnasari Nofrizal Nofrizal Nofrizal Nofrizal Noura, Karim Novalia Novalia Novalia Novalia Novika, Fanny Nugroho, Aji Arif NUR HASANAH Palupi, Endah Kinarya Putri, Devita Amalia Rachmawati, Ro'fah Nur Raditya, Aji Rahayu, Tiara Rahmad Junaidi, Rahmad Rahmawati, Yasinta Rahmi Ramadhani Ratnasari, Nining Ratnasari, Nining Riawan Syahrul Haz, Habban Rizka Dwi Saputri Rizki Wahyu Yunian Putra Rizqi Prastowo Rofiqul Umam Ruhban Maskur Saidat, Suhaila Sakti Aktarim Siamy, Lailatul Siamy, Lailatul Siska Andriani Syamsul Huda Syamsul Huda Syarif Abdullah Tadjudin, Nilawati Tortop, Hasan Said Umi Azizatul Mubaroh Umi Azizatul Mubaroh, Umi Azizatul Venita Syavera Vina Apriliani Vivi Iswanti Nursyirwan Wahyudianto, Benny Watcharin Joemsittiprasert Yabansabra, Alexander Yasinta Rahmawati Zakiy, Muhammad Abdurrahman