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All Journal Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi) Jurnal Penelitian Pendidikan IPA (JPPIPA) Pendas : Jurnah Ilmiah Pendidikan Dasar Jurnal Teknoif Teknik Informatika Institut Teknologi Padang
Rayendra
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Education Engineering Materials Science & Nanotechnology Physics Other

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Optimizing Sensitivity in Machine Learning Models for Pediatric Post-operative Kyphosis Prediction Raja Ayu Mahessya; Dian Eka Putra; Rostam Ahmad Efendi; Rayendra; Rozi Meri; Riyan Ikhbal Salam; Dedi Mardianto; Ikhsan; Ismael; Arif Rizki Marsa
Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi) Vol 9 No 3 (2025): June 2025
Publisher : Ikatan Ahli Informatika Indonesia (IAII)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29207/resti.v9i3.6606

Abstract

Post-operative kyphosis represents a significant complication following pediatric spinal corrective surgery, necessitating sophisticated prediction methods to identify high-risk patients. This study developed and evaluated machine learning models for kyphosis prediction using a dataset of 81 pediatric patients by comparing the logistic regression and decision tree approaches. Despite achieving a higher overall accuracy (82%), the logistic regression model failed to identify any kyphosis cases, rendering it clinically ineffective. Conversely, the decision tree model demonstrated superior clinical utility by successfully identifying 33% of kyphosis cases while maintaining 71% accuracy. Feature importance analysis established starting vertebral position as the dominant predictor (importance=0.554), followed by patient age (0.416), with vertebrae count contributing minimally (0.030). The decision tree identified critical thresholds for risk stratification: operations beginning at or above T8-T9, particularly in children aged 5-9 years, carried a substantially elevated kyphosis risk. Our methodological approach emphasizes sensitivity over conventional accuracy metrics, recognizing that missing high-risk patients have greater clinical consequences than unnecessary monitoring. This study demonstrates the capacity of decision tree models to extract clinically meaningful patterns from small, imbalanced surgical datasets that elude conventional statistical approaches.
IMPLEMENTASI INCREMENTAL METHOD PADA RANCANG BANGUN WEBSITE PENERBIT PNP PRESS Ikhbal Salam, Riyan; Ikhsan; Rayendra; Ismael; Eka Putra, Dian; Ramadhani
Jurnal Teknoif Teknik Informatika Institut Teknologi Padang Vol 13 No 1 (2025): TEKNOIF APRIL 2025
Publisher : ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtif.2025.V13.1.1-7

Abstract

PNP Press publisher is one of the publishers in Indonesia which is under the auspices of the Padang State Polytechnic State University. This publisher publishes two publishing models, namely magazines and books. The types of books published at PNP Press are scientific books, texts, and references. Meanwhile, the types of articles published in magazines are popular articles and articles from several columns. With the increasing demand for book and magazine publications at this publisher, a system is needed that can manage the publication process effectively and efficiently. This research aims to design and implement a website that can facilitate the publication and distribution process of magazines and books at PNP Press using the Incremental method. This method was chosen because it can accommodate various needs during the system development process. Using the Incremental Method in building publisher websites has proven capable of producing PNP Press publisher websites that suit user needs and ensure the system can be implemented effectively, namely in the form of books published using the open monograph press (OMP) and magazines using the open journal system (OJS).
Development of E-Modules Integrate with PBL (Problem Base Learning) in High School Physicts Subject Class XI Sikumbang, Nurhasnah; Jasrial; Ridwan; Rayendra
Jurnal Penelitian Pendidikan IPA Vol 11 No 6 (2025): June
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i6.11627

Abstract

This study aims to test the feasibility, practicality and effectiveness of the development of e-modules based on Problem Based Learning (PBL) on sound wave material in Physics class XI at SMA Pertiwi 1 Padang. The method used in this research is Research and Development (R&D) with the 4D model (Define, Design, Develop, Disseminate). The sample used in this study was class XI students at SMA Pertiwi 1 Padang totaling 33 students. The instrument used in the study was a questionnaire sheet for validation of feasibility and practicality. Data collection techniques in this study include tests in the form of pre-test and post-test work while non-tests include observation, questionnaire filling, interviews and documentation. The results showed that the feasibility value of developing e-modules with PBL syntax provided by media, material and language experts met the criteria with an average validity of 82.53%, 88.51%, and 100% respectively (very valid category). The practicality test by students showed an average practicality level of 93.87% (very practical category). Based on the results of the pre-test and post-test, the development of e-modules with PBL syntax meets the effective criteria, this can be seen from the effectiveness analyzed with the results of a significant increase based on the t test (t_hitung = 5.51 > t_table = 2.037). Thus, this PBL-integrated e-module is declared valid, practical, and effective as Physics learning media, and is able to significantly improve students' concept understanding of sound waves material.
Development of E-LKPD Based on Technology Pedagogical and Content Knowledge (TPACK) in High School Mathematics Subjects Syafrudin; Rayendra; Zen, Zelhendri; Zuwirna
Jurnal Penelitian Pendidikan IPA Vol 11 No 7 (2025): July
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i7.11361

Abstract

Mathematics learning in Class X SMAN 1 Pelangiran remains suboptimal due to the dominance of lecture-based methods and conventional teaching materials, resulting in passive student engagement and low learning outcomes (only 41.38% completeness). This study aimed to develop a TPACK-based Electronic Student Worksheet (E-LKPD) for geometry materials to enhance learning effectiveness. TPACK integrates technological, pedagogical, and content knowledge, while E-LKPD promotes interactive, technology-assisted learning. Using a Research and Development (R&D) approach with the ADDIE model (Analysis, Design, Development, Implementation, Evaluation), the E-LKPD was designed with multimedia elements such as videos, quizzes, and digital navigation. Expert validation results indicated high feasibility: material (95.4%), media (80%), and language (90.55%). Practicality tests showed the E-LKPD was very practical for teachers (90.95%) and students (85.25%). Effectiveness was demonstrated through an increase in students’ average scores from 17.31 in pre-test to 61.21 in post-test, with and N-Gain of 57%. The findings conclude that the TPACK-based E-LKPD is valid, practical, and effective in supporting more interactive and adaptive mathematics learning.
Development of E-modules Based on Quantum Learning in Projek IPAS for Class X Vocational High School Deviana, Betty; Zen, Zelhendri; Rayendra; J, Fetri Yeni; Mirshad, Emilham; Desky, Abdul Habib Arrasyidi
Jurnal Penelitian Pendidikan IPA Vol 11 No 9 (2025): September
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i9.12179

Abstract

This study aims to develop a Quantum Learning-based e-module for the subject of Natural and Social Science Projects (IPAS) in class X Vocational High School, focusing on Economic Behavior and Social Welfare material. The development employed the ADDIE model (analysis, design, development, implementation, and evaluation). Expert validation results show that the e-module is very valid in material (89.70%) and language (96.70%), and valid in media (78%). Practicality tests indicate the module is practical (79% by teachers) and very practical (82% by students). Effectiveness was assessed through pre-test and post-test with 31 students, analyzed using the t-test. The results show a t-count of 16.17, exceeding the t-table value of 1.697 at a 0.05 significance level, indicating a significant improvement in student learning outcomes after using the module. In conclusion, the Quantum Learning-based e-module meets the criteria of validity, practicality, and effectiveness, and can be used as a quality learning resource to enhance student engagement and achievement.
Media in Improving Teachers Professional Competence at SMAN 5 Batam Ermawalis; J, Fetri Yeni; Darmansyah; Rayendra; Mirshad, Emilham; Desky, Abdul Habib Arrasyidi
Jurnal Penelitian Pendidikan IPA Vol 11 No 9 (2025): September
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i9.12180

Abstract

This study aims to analyze the use of digital-based media in enhancing the professional competence of teachers at SMAN 5 Batam. Teacher competence is crucial for improving the quality of learning, and digital technology offers potential strategies for professional development. The research employed a quantitative approach, using descriptive and inferential analyses, with simple linear regression to examine the relationship between digital media use and teacher competence. The results show that integrating digital media positively impacts teachers’ knowledge, pedagogical skills, and learning innovation. The study found a strong correlation between digital media use and professional competence (r = 0.770) and a coefficient of determination of 58.83%, indicating that digital media contributes significantly to competence improvement. Despite these positive outcomes, several challenges were identified, including limited infrastructure, insufficient ongoing training, and resistance to adopting new technologies. The findings suggest that the effective use of digital media can enhance teacher competence when supported by proper policies, continuous training, and capacity-building programs. This research highlights the strategic role of digital technology in teacher development and provides empirical evidence that supports the integration of digital media as a tool to foster professional growth and innovation in education.
Interactive Multimedia Development Based on TPACK IPAS Subjects for Grade IV Elementary School Students Nelwideri, Rini; Rayendra; J, Fetri Yeni; Hakim, Ramalis
Jurnal Penelitian Pendidikan IPA Vol 11 No 9 (2025): September
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i9.12221

Abstract

This research aimed to develop an interactive multimedia based on TPACK (Technological Pedagogical Content Knowledge) for the IPAS (Science and Social Studies) subject in Grade IV at SDN 22 Cacang Randah, Kabupaten Agam. The study employed the ADDIE model (Analysis, Design, Development, Implementation, Evaluation) for the development process. The results showed that the developed multimedia was valid, practical, and effective for use in the classroom. The validation process, carried out by education experts, indicated that the multimedia met the learning goals and was well-designed. The practical implementation of the multimedia, as assessed by both teachers and students, confirmed its ease of use and accessibility. Additionally, effectiveness tests conducted through pretests and posttests revealed a significant improvement in students' understanding of the material, with an average N-gain score of 85.90%, categorized as high. The multimedia supported the development of critical thinking and enhanced student engagement, aligning with the principles of Kurikulum Merdeka. In conclusion, the interactive multimedia based on TPACK is a valid, practical, and effective tool for enhancing the learning experience in elementary school education. Further studies with larger sample sizes and broader topics are recommended to explore its long-term effectiveness.
ANALISIS PENERAPAN PEMBELAJARAN BERDIFERENSIASI DALAM KURIKULUM MERDEKA DI SMAN 7 PADANG Hikmah, Sri Hikmah Putri; Abna Hidayati; Rayendra; Mutiara Felicita Amsal
Pendas : Jurnal Ilmiah Pendidikan Dasar Vol. 10 No. 02 (2025): Volume 10 No. 02 Juni 2025
Publisher : Program Studi Pendidikan Guru Sekolah Dasar FKIP Universitas Pasundan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23969/jp.v10i02.25236

Abstract

The study aims to analyze the application of differentiated learning consisting of content differentiation, process differentiation, product differentiation, and learning environment differentiation carried out at SMAN 7 Padang. The method used is Mixed Method with the Concurrent Embedded Strategy model. This model uses quantitative methods and qualitative methods. In this model, there are those who act as quantitative data, namely subject teachers of grade XI phase F of SMAN 7 Padang and students of phase F with a sample size of 15 teachers and 56 students and qualitative data using the Miles and Huberman Model. The results of the study showed that the application of differentiated learning carried out at SMAN 7 Padang on content differentiation was in the "Very Good" category with an average percentage of teachers of 82.50% and students of 81.25%, process differentiation was in the "Good" category with an average percentage of teachers of 80.93% and students of 76.64%, product differentiation was in the "Good" category with an average percentage of teachers of 86.67% and students of 80.63%. and the differentiation of the learning environment is in the "Good" category with an average percentage of teachers of 82.78% and students of 78.13%. Based on these results, it is concluded that overall the implementation of differentiated learning has been going well. However, obstacles were encountered including limited facilities in several classes and there were still teachers who were in the stage of understanding and learning the concept of differentiated learning.
Development of Physics Learning E-Module for Class X High School Students Harahap, Nur Indriati; Hakim, Ramalis; Rayendra; Ridwan
Jurnal Penelitian Pendidikan IPA Vol 10 No 7 (2024): July
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v10i7.7548

Abstract

This research aims to determine the validity of the physics e-module for grade X Senior High School students. The type of research used is research and development (R&D) by adopting the ADDIE development model. The stages of the ADDIE development model consist of Analysis, Design, Development, Implementation, and Evaluation. Data analysis was conducted to assess the validity of the physics e-module in three aspects: media, content, and language. Validity was evaluated by six experts: two media experts, two content experts, and two language experts. The results of the validity test of the physics e-module obtained from media experts was 79% with the category "Valid", from content experts was 94% with the category "Very Valid", and from language experts was an average of 90% with the category "Very Valid". It can be concluded that the physics e-module is valid and suitable for use in physics learning for grade X Senior High School students.
Development of Virtual Laboratory in Physics Subject for Senior High School Phase-F Pratiwi, Maharini Rizky; Hakim, Ramalis; Zen, Zelhendri; Rayendra; Yeni J, Fetri; Hardika, Jodi
Jurnal Penelitian Pendidikan IPA Vol 10 No 12 (2024): December
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v10i12.9406

Abstract

This study aims to develop a valid, practical, and effective virtual laboratory as a solution to overcome limitations in physics education, with the expectation of improving both teaching quality and students' understanding of physics concepts. The research follows a Research and Development (R&D) approach using the 4-D model, which includes four stages: define, design, develop, and disseminate. The subjects of this study were 28 Phase-F students at SMA Negeri 11 Padang. The results include a virtual laboratory for Phase-F high school physics, validated with high scores: 89% for content validity, 97% for media validity, and 92% for language validity, all categorized as highly feasible. The trial for practicality among students scored 80.39%, categorized as practical, while the teacher trial scored 97%, categorized as highly practical. The effectiveness test showed significant improvement in student performance, with the average score increasing from 38.39 to 79.64. The N-gain score was 0.67, indicating moderate improvement. Based on the development and trials, it can be concluded that the virtual laboratory product for Phase-F high school physics is valid, practical, and effective for use in learning activities.
Co-Authors Abna Hidayati Amini, Marina Arif Rizki Marsa Armadhani, Dhea Boyusta, Winda Darmansyah Dedi Mardianto Desky, Abdul Habib Arrasyidi Desyandri Desyandri Deviana, Betty Dian Eka Putra Eka Putra, Dian Ermawalis Fetri Yeni J Harahap, Nur Indriati Hardika, Jodi Hikmah, Sri Hikmah Putri Ikhbal Salam, Riyan Ikhsan Ismael Jasrial Leni Zahara Mirshad, Emilham Mutiara Felicita Amsal Nelwideri, Rini Novita Sari Pratiwi, Maharini Rizky Putri, Ellsy Rahmadani Raja Ayu Mahessya Ramadhani Ramalis Hakim Ridwan Rostam Ahmad Efendi Rozi Meri Sikumbang, Nurhasnah Syafrudin Waldi, Agus Zen, Zelhendri Zuwirna