Garuda - Garba Rujukan Digital

p-Index From 2020 - 2025

7.397

P-Index

This Author published in this journals

Jefri Marzal

Universitas Jambi

Author-ID : 2512256

Religion Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Library & Information Science Mathematics Public Health Social Sciences Transportation Other

Published : 66 Documents Claim Missing Document

Claim Missing Document

Articles

3 4 5 6 7

Pengembangan Sistem Informasi Agenda Terintegrasi Menggunakan Framework Design Science Research Cycles Aryani, Reni; Marzal, Jefri; Utomo, Pradita Eko Prasetyo; Chit, Suwannit Chareen
Jurnal SAINTIKOM (Jurnal Sains Manajemen Informatika dan Komputer) Vol 24 No 1 (2025): Februari 2025
Publisher : PRPM STMIK TRIGUNA DHARMA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53513/jis.v24i1.10766

terutama dalam konteks transformasi digital. Ketiadaan sistem manajemen agenda yang terintegrasi seringkali menyebabkan tumpang tindih jadwal dan ketidakpatuhan terhadap janji yang telah ditetapkan. Penelitian ini bertujuan untuk mengembangkan dan mengimplementasikan sistem informasi agenda terintegrasi berbasis web dan mobile dengan menggunakan Framework Design Science Research Cycles (DSRC). Studi ini menangani masalah spesifik yang dihadapi oleh pimpinan institusi melalui penciptaan artefak inovatif. Selain itu, fungsionalitas sistem diuji dengan pendekatan Black Box. Hasil penelitian menunjukkan bahwa framework DSRC berhasil diterapkan, dengan siklus relevance, rigor, dan design yang diimplementasikan selama pengembangan sistem. Pendekatan yang digunakan mengikuti kerangka kerja User-Centered Design (UCD). Pengujian fungsional mengonfirmasi bahwa tujuh menu yang dikembangkan telah memenuhi kebutuhan manajemen agenda, memfasilitasi pimpinan universitas dalam mengakses, mengelola, dan memantau agenda, serta memberikan akses lebih luas kepada pihak terkait untuk melihat jadwal rapat dan kegiatan pimpinan. Namun, penelitian ini menemukan bahwa metrik kegunaan artefak dan dampaknya terhadap manajemen agenda di Universitas Jambi belum diukur. Untuk itu, penelitian selanjutnya perlu fokus pada evaluasi efisiensi, efektivitas, dan kepuasan pengguna terhadap sistem.

Exploring Pre-Service Mathematics Teachers' Reasoning Skills in Solving Route Travel Problems: A Real-Life Application of Numeracy Sri Winarni; Kamid Kamid; Jefri Marzal; Asrial Asrial
Jurnal Pendidikan MIPA Vol 25, No 2 (2024): Jurnal Pendidikan MIPA
Publisher : FKIP Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar

This research highlights the importance of numeracy as one of the indicators in assessing a country's progress. Numeracy bridges mathematical theory with practical application and can be used in everyday decision-making, such as financial decisions, health literacy, and risk assessment. However, the Minimum Competency Assessment results show that more than 50% of students still need to be in the low numeracy competency category. This research aims to explore the mathematical reasoning processes of pre-service mathematics teachers in solving travel route problems to understand their analytical skills. This research uses a qualitative descriptive approach with data collected from 30 fifth-semester mathematics education students at the University of Jambi. Data were obtained through numeracy tests, observations, and semi-structured interviews, allowing in-depth analysis of the participants' mathematical reasoning processes in solving contextual problems. Participants were asked to solve problems related to the context of travel routes, focusing on time and cost efficiency in choosing travel routes. The research results show that most participants can understand and model the problem, although there are differences in their approaches to solving it, ranging from very analytical to simple. Some participants initially misunderstood the problem, but after being given the opportunity for reflection, they were able to improve their understanding and the solutions produced. This research concludes that fostering mathematical reasoning in teacher training programs is crucial for improving numeracy skills. Sustained practice, reflection, and a structured problem-solving approach are necessary to help prospective teachers analyze and interpret mathematical problems more effectively. Keywords: mathematical reasoning, problem-solving, route travel, and pre-service mathematics teachers. DOI: http://dx.doi.org/10.23960/jpmipa/v25i2.pp712-727

Comparison of K-Nearest Neighbor and Support Vector Machine Methods in Sentiment Analysis of Offline Courses Bimbe, Muhammad Arrazi Alghifari; Marzal, Jefri; Khaira , Ulfa
Internet of Things and Artificial Intelligence Journal Vol. 5 No. 1 (2025): Volume 5 Issue 1, 2025 [February]
Publisher : Association for Scientific Computing, Electronics, and Engineering (ASCEE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31763/iota.v5i1.898

The implementation of the New Normal policy triggers various responses from the community regarding offline learning. Some students accept this system well and have a positive view towards the adaptation of new habits. To understand public opinion on this policy, sentiment analysis is used to categorize opinions into positive or negative categories. This method is very useful in extracting opinions from social media and analyzing public responses to an issue. In sentiment analysis, two methods that are often used are K-nearest neighbor (KNN) and Support Vector Machine (SVM). KNN classifies data based on the closest distance, but this method is quite susceptible to noise. In contrast, SVM works by determining the optimal hyperplane to separate data classes, making it more stable in classification. In this research, tests were conducted using a 90:10 split data scenario. The analysis shows that the accuracy of the Support Vector Machine is higher than K-Nearest Neighbors.SVM recorded an accuracy of 63.39%, while KNN only reached 38.80%. In addition, based on performance evaluation, SVM excels in Precision, Recall, and F1-Score aspects when compared to KNN. Based on these results, it can be concluded that in sentiment analysis related to offline learning after the New Normal policy, the Support Vector Machine method is more effective than the K-Nearest Neighbor, both in terms of accuracy and overall model performance.

Comparative Analysis of Triangulation Methods for Optimal Solutions to the Art Gallery Problem Marzal, Jefri; Niken Rarasati; Waladi, Akhiyar; Perdana, Yogi
PIKSEL : Penelitian Ilmu Komputer Sistem Embedded and Logic Vol. 13 No. 1 (2025): Maret 2025
Publisher : LPPM Universitas Islam 45 Bekasi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33558/piksel.v13i1.10749

Triangulation is the process of breaking down an n-sided polygon into triangles and it is necessary in deciding the optimal count and the position of guards in the Art Gallery Problem (AGP) There is a theoretical limit that has been established which states that the number of required guards needed to keep an eye on such a polygon is ⌊n/3⌋ and this research considers this as the limit. Among various triangulation methods, Ear Clipping and Minimum Weight are two primary approaches frequently used to achieve optimal solutions. Nonetheless, its comparison with other methods, more particularly the amount of guards required for the maximum theoretical figure, is still a gap in literature. The aim of this research is to create an AGP simulation program and test it against the theoretical upper bound, determining the number of guards required. 228 simple polygons with vertices varying between 10 and 110 were utilized in this research. The polygons were classified into three groups based on the ratio of convex to concave vertices: less concave vertices, equal amount of concave and convex vertices and vice versa. Result study shows that the Ear Clipping method is significantly superior to Minimum Weight in reducing guard requirements. Practically speaking, these advancements are important for the design of engineering systems such as surveillance systems and the surveillance of public spaces. In the context of building security system design and monitoring of large areas, these conclusions are of utmost importance.

Numeracy skill development in prospective mathematics teachers: Challenges and opportunities in real-world contexts Winarni, Sri; Kamid; Marzal, Jefri; Asrial
Journal on Mathematics Education Vol. 16 No. 1 (2025): Journal on Mathematics Education
Publisher : Universitas Sriwijaya in collaboration with Indonesian Mathematical Society (IndoMS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22342/jme.v16i1.pp91-110

Numeracy skills are essential for prospective mathematics teachers as they bridge mathematical concepts with real-life applications. However, many prospective mathematics teachers face challenges in applying these concepts to practical situations. This study aims to analyze the conceptual and procedural errors made by prospective mathematics teachers when solving numeracy problems within the context of "Save Our Water." A descriptive research design was employed, utilizing a numeracy test adapted from the Minimum Competency Assessment (MCA) and semi-structured interviews as research instruments. The study involved 30 prospective mathematics teachers from the University of Jambi, Indonesia. The findings revealed that conceptual errors primarily stemmed from reliance on rote memorization of formulas without a deeper conceptual understanding. Procedural errors were attributed to difficulties in unit conversion, incorrect formula application, and improper manipulation of formulas. To address these issues, the study recommends incorporating contextual approaches, problem-based learning, and project-based learning strategies that connect mathematical concepts to real-world contexts. Additionally, the use of visual aids, such as diagrams and 3D models, is suggested to enhance conceptual understanding and strengthen the connection between abstract concepts and practical applications. Future research should investigate the effectiveness of these instructional approaches in improving numeracy skills and enhancing the teaching readiness of prospective mathematics teachers.

Exploring the Life and Academic Experiences of International Students at the University of Jambi, Indonesia: A Case Study Saharudin; Reli Handayani; Ahmad Syauqi Harsyah; Jefri Marzal; Regita Riani Putri
VELES Voices of English Language Education Society Vol 8 No 2 (2024): August 2024
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/veles.v8i2.25847

The increasing number of international students in Indonesia's higher education sector urges institutions to improve the quality of their services, facilities, and education. The teaching and learning environment is critical, encompassing the effectiveness of instructional methods, classroom interactions, and the academic support systems provided by the university. Additionally, their socio-experiences, including integration into the campus community and interactions with peers, play a crucial role in their overall well-being and academic success. This study aims to explore the life and academic experiences of international students in undergraduate International Programs at the University of Jambi in Indonesia. This research employed a mixed-method approach, combining a questionnaire adapted from the Strategy Inventory for Language Learning (SILL) and in-depth interviews, with a total of 13 international students from international classrooms participating in the study. The research highlights significant challenges for international students at the University of Jambi, including inadequate classroom and laboratory facilities, poor lighting, and insufficient resources, particularly in Animal Sciences and Agriculture. Language barriers due to Indonesian being the primary medium of instruction further hinder learning. Students express high dissatisfaction with services such as insurance, health facilities, extracurricular activities, and counseling, though library services are well-regarded. Recommendations include adopting English for instruction, providing bilingual training for lecturers, and improving infrastructure and student services to enhance the overall academic experience for international students

Efektivitas Pengembangan Multimedia Pembelajaran Matematika Berbasis Teori Apos pada Materi Statistika dan Peluang muhammad maki; Jefri Marzal; Saharudin Saharudin
Edumatica : Jurnal Pendidikan Matematika Vol 8 No 2 (2018): Edumatica | Jurnal Pendidikan Matematika (Oktober 2018)
Publisher : Department of Mathematics Education, Faculty of Teacher Training and Education, Universitas Jambi

Multimedia pembelajaran merupakan suatu kombinasi dari berbagai media yang dirancang atau diprogram secara terstruktur dan interaktif untuk menyajikan konsep pembelajaran. Hendaknya dipersiapkan multimedia pembelajaranuntuk membantu memudahkan pembelajaran agar siswadapat memahamikonsepdanmerepresentasikan konsep pembelajaran matematika.Tujuan penelitian ini adalah mengembangkan multimedia pembelajaran matematika berbasis teori APOS (aksi, proses, objek dan skema) dan efektivitasnya terhadap pembelajaran pada materi statistika dan peluang yang valid menurut ahli. Efektivitas pembelajaran diukur denganpeningkatan kemampuan representasi matematis dan multimedia dipersepsikan dengan baik oleh siswa. Jenis penelitian ini adalah penelitian pengembangan yang mengembangkan multimedia pembelajaranmatematika dan instrumen yang digunakan adalah angket penilaianahli materi dan ahli desain pembelajaran, angket tanggapan guru dan siswa, persepsi siswa, dan tes hasil kemampuan representasi matematis siswa. Dari hasil analisis tes kemampuan representasi didapat peningkatan kemampuan representasi matematis siswa pada kategori tinggi, berdasarkan uji gain untuk materi statistika skor yang diperoleh 0,7 dan materi peluang skor uji gain diperoleh 1,3. Dan hasil analisis dari angket persepsi siswa didapat persentase 95% menunjukkan kategori â€œsangat positifâ€. Dapat disimpulkan multimedia pembelajaran yang dikembangkan sangat baik dan dapat meningkatkan kemampuan representasi matematis siswa. Sehingga multimedia pembelajaran efektiv digunakan oleh guru dan siswa SMA khususnya pada pembelajaran materi statistika dan peluang.Kata Kunci : Multimedia Pembelajaran, Teori APOS, Efektivitas Multimedia learning is a combination of various media that are designed or programmed in a structured and interactive way to present the concept of learning. Multimedia learning should be prepared to help facilitate learning so students can understand the concept and represent the concept of mathematics learning. The purpose of this study was to develop a multimedia learning mathematics based on APOS theory (actions, processes, objects and schemes) and its effectiveness on learning in statistical materials and valid opportunities according to experts. The effectiveness of learning is measured by increasing the ability of mathematical representations and multimedia are well perceived by students. This type of research is development research that develops multimedia mathematics learning and the instruments used are questionnaires for assessment of material experts and expert learning design, questionnaires of teacher and student responses, student perceptions and test results of studentsmathematical representation abilities. From the results of the analysis of the representation ability test obtained an increase in students mathematical representation ability in the high category, based on the gain test for statistical material the score obtained was 0,7 and the probability material gain test score was 1,3. And the results of the analysis of the student perception questionnaire obtained a percentage of 95% showed the category â€œvery positiveâ€. It can be concluded that multimedia learning that is developed is very good and can improve students mathematical representation abilities. So that effective multimedia learning is used by teachers and high school students, especially in learning statistical materials and opportunities.Keywords: Learning Multimedia, APOS Theory, Effectiveness

Pengembangan Perangkat Pembelajaran Trigonometri Model Flipped Classroom untuk Meningkatkan Kemampuan Komunikasi Matematis Siswa Ayudita Ardila; Jefri Marzal; Jodion Siburian
Edumatica : Jurnal Pendidikan Matematika Vol 11 No 3 (2021): Edumatica: Jurnal Pendidikan Matematika (Desember 2022)
Publisher : Department of Mathematics Education, Faculty of Teacher Training and Education, Universitas Jambi

The purpose of this research is to produce valid, practical and effective Flipped Classroom-based mathematics learning tools and to improve students' mathematical communication skills. The method used in this research is the Ploom development model. The development of the Plomp model is namely the initial investigation phase, the development phase, and the assessment phase. Learning tools developed in the form of lesson plans, student worksheets and learning videos. The subjects of the field test were students and educators in class X of SMAN 3 Jambi for the 2020-2021 academic year. The research instruments used were instruments at the initial investigation stage, validity test instruments, practicality test instruments and effectiveness test instruments. The results of the validation of the Flipped Classroom-based mathematics learning device were valid in terms of construct and content. The validity values obtained for lesson plans, learning videos, and worksheets are 3.41; 3.17; and 3,4. Flipped Classroom-based math learning tools are practical in terms of implementation and ease of use. The results of the questionnaire analysis of the student's practicality data showed a figure of 81% so that it was categorized as practical from the observation data on the implementation of learning and interviews. The resulting learning devices are effective in improving students' mathematical communication. The results of the final test of students' mathematical communication skills are 77.78% of students who have scored above the KKM.

The Effect of the Implementation of Learning Models Student Teams Achievement Division (Stad) Stem Based on Mathematical Critical Thinking Ability Reviewed from Mathematics Learning Styles Rezki Amalia, Nosa; Marzal, Jefri; Kamid, Kamid
Enrichment: Journal of Multidisciplinary Research and Development Vol. 2 No. 10 (2025): Enrichment: Journal of Multidisciplinary Research and Development
Publisher : International Journal Labs

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55324/enrichment.v2i10.268

In initial observations, it was seen that students did not write down what they knew (interpretation), were not precise in making mathematical models (analysis), were less precise in using strategies to solve problems (evaluation), and had no conclusions (inference). After paying attention, students have different learning styles. However, the learning model used has not been able to improve mathematical critical thinking skills in terms of learning style. This research aims to find out how mathematical critical thinking skills are treated with the STEM-based STAD learning model in terms of learning styles. This type of research is quantitative research with research subjects namely class X students at MAN 1 Muaro Jambi. The research design used was a posttest only control design. The population was 115 students from 4 classes and the sample consisted of 3 classes, namely experimental class I (29 students), experimental class II (29 students), and control (28 students). The sampling technique was carried out using the cluster random sampling technique. The instruments in this research were observation sheets, learning style questionnaires, and mathematical critical thinking ability tests. The data obtained in this study were analyzed using a two-way ANOVA test. The results of the research show that: 1) There is an influence of the application of the STEM-based STAD model on mathematical critical thinking skills where the significance value of the learning model is , so is rejected or is accepted, 2) There is no influence of learning style on mathematical critical thinking skills with The significance value for learning style is , so is rejected or is accepted, and 3) There is no interaction between the application of the STEM-based STAD model and learning style on mathematical critical thinking skills with a significance value of , so is rejected or accepted. The results of the research concluded that the STEM-based STAD learning model applied in experimental class I was more effective for mathematical critical thinking skills, as evidenced by the average mathematical critical thinking ability of the STEM-based STAD learning model of which is greater than the average. using STAD and direct instruction.

Pengembangan Landing Page untuk Mendukung Digitalisasi PT Kosa Group Indonesia Menggunakan Platform Low-Code Irawan, Arswenda Jameci; Marzal, Jefri; Fadhila Putri, Mutia
Journal Software, Hardware and Information Technology Vol 5 No 2 (2025)
Publisher : Jurusan Sistem Informasi Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/shift.v5i2.196

This study aims to develop a landing page as part of the digitalization strategy of PT Kosa Group Indonesia, a culinary company consisting of three main divisions: Kosarasa, Kosa Team, and Risafood. The development followed the waterfall method through observation, literature review, system design, implementation, and testing. The Framer platform was selected as a low-code solution due to its efficiency in building responsive, maintainable interfaces without the need for complex programming. This initiative was driven by the limitations of previously used platforms such as LinkTree, which lacked the capability for visual customization and did not effectively unify multi-division information. Performance testing using Google PageSpeed Insights showed an increase from 44 to 54 on mobile and from 44 to 55 on desktop after visual and structural optimizations. Usability testing using the System Usability Scale (SUS) yielded an average score of 87.25, which is categorized as excellent. The results indicate that low-code-based landing page development offers an effective solution to support business digitalization in the culinary sector, while maintaining development efficiency, strong visual identity, and user-friendly experience.

Co-Authors -, Maison Abidin Abidin Ahmad Fahrudin Ahmad Syauqi Harsyah Ahmad Syukri Ahmad Syukri Akhiyar Waladi Ali Idrus Alya Hanifah Setiawan Amelya Permata Sari Amin Asri Yati Ana Rasyidah Antok Kurniawan Antok Kurniawan Ari Frianto Aryani, Reni Asni Johari Asrial Asrial Ayudita Ardila Benetika F. Hutabarat Bimbe, Muhammad Arrazi Alghifari Bj. Nofrian Kurni Chit, Suwannit Chareen Christin Lovyantika Damris Muhammad Debby Arisandy Dwi Agus Kurniawan Dwiki Prasetya Subakti Eko Kuntarto Elisa, Edi Elsa Novyarti Fauzi Khoirul Mahfi Fera Zulainy Feri Tiona Pasaribu Gunawan Gunawan Haryanto Haryanto Haryanto Haryanto Hasibuan , Muhammad Haris Effendi Hazar Kusmayanti Hefri Asra Omika Hendra Sofyan Husni Sabil Husnul Khatimah Idhar Khaira Indra Weni Intan Iklima Irawan, Arswenda Jameci Isnania Isnania Jodion Siburian Kamid , Kamid Kamid Kamid Khaira , Ulfa Khaira, Ulfa Kurniawan, Antok Kurniawan, Antok Lovyantika, Christin M Nasiruddin Fa M Rusdi M Rusdi Miko Pratama Muhaimin Muhaimin Muhaimin Muhaimin Muhammad Haris Effendi Hasibuan Muhammad Iqbal muhammad maki Muhammad Rafiq Muhammad Rusdi mutia fadhila putri, mutia fadhila Mutiara Siska Nabila Hayatul Husna Nice Anggraini niken rarasati Nizlel Huda Nofyta Arlianti, Nofyta novferma, novferma Nugroho Ardy Pramono Nur Zaharah Nurjanah Nurjanah Nurjanah Nurjanah Oktarino, Randy Perdana, Yogi Ratumas Feby Purniance Regita Riani Putri Reli Handayani Rezki Amalia, Nosa Riana Teofani Rina Kusuma Dewi Rini Mariani Riza Maiyusriani Rizka Apriyani Putri Rizqa Raaiqa Bintana Rohati Rohati Rohati Rohati Romundza, Febbry Roni Handika Putra Rusdi Rusdi Saharudin Saharudin Saharudin Saharudin Saharudin Sariyani SN Sri Purwaningsih Sri Winarni Sri Winarni Sridewi Anggraeni Wiyono Sutrisno Sutrisno Syaiful Syaiful Syaiful Syaiful Syamsurizal - - syamsurizal syamsurizal Utomo, Pradita Eko Prasetyo Wahyu Budiman Wahyu Fitroh Wardi Syafmen Wardi Syafmen Wawan Kurniawan Yantoro, Y Yelli Ramalisa Yuliarni, Ike Zurweni Zurweni

Title

Found 66 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 66 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 66 Documents
Search