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All Journal BULETIN FISIKA Jurnal Penelitian Pendidikan IPA (JPPIPA) JURNAL PENDIDIKAN TAMBUSAI Jurnal Ilmu Fisika Eksakta : Berkala Ilmiah Bidang MIPA MANAZHIM Pelita Eksakta Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal) Pillar of Physics Education : Jurnal Berkala Ilmiah Pendidikan Fisika Pillar of Physics: Jurnal Berkala Ilmiah Fisika Indo-MathEdu Intellectuals Journal Georest: Geoscience, Remote Sensing, and Technology Journal of Climate Change Society Time in Physics: Journal for Theoretical, Instrumentation, Material-Molecular, and Education Physics Journal of Experimental and Applied Physics
Harman Amir
Universitas Negeri Padang
Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences Other

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Needs Analysis for the Development of an E-Worksheet on Global Warming Integrated with Ethno-PBL to Facilitate Students' Knowledge and Creative Thinking Skills Wardatul Fajriyaty; Asrizal; Harman Amir; Hayyu Yumna
TIME in Physics Vol. 3 No. 2 (2025): September (INPRESS)
Publisher : Universitas Mandiri

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Abstract

The mastery of 21st-century skills, particularly the 4Cs (critical thinking, creativity, communication, and collaboration), is not yet optimally supported by conventional learning approaches. The Ethno-PBL approach is considered effective in enhancing the relevance and meaningfulness of learning by linking scientific concepts with local context and indigenous knowledge. This study employed a descriptive statistical analysis, with data collected through questionnaires administrated to teacher and student. The research revealed four main findings from the needs analysis: students' knowledge was categorized as fairly good, with an average score of 56.11, while their creative thinking skills remained low, with an average score of 30.1. The use of E-Worksheets in school learning was classified as fairly good, with a score of 41.67. The integration of ethnoscience in learning was rated as poor, with a score of 36.25. The integration of the problem-based learning (PBL) model was considered fairly good, with a score of 41.3. These results indicate that the development of an Ethno-PBL integrated E-Worksheet is urgently needed by both teachers and students to improve creative thinking skills.
Analysis of the Need for E-SWS Development Integrated Ethnoscience and PBL Models for Global Warming to Facilitate Students' Knowledge and Communication Skills Hermanda, Richi Junia; Asrizal; Harman Amir; Suherman, Dea Stivani
TIME in Physics Vol. 3 No. 2 (2025): September (INPRESS)
Publisher : Universitas Mandiri

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Abstract

21st-century education demans learning that enchances knowledge and develops communication skills. This study aims to analyze the need for developing an integrated ethnoscience-based E-LKPD on global warming, using a Problem-Based Learning (PBL) model to facilitate students’ knowledge acquisition and communication skills. The preliminary study was conducted at SMAN 1 Enam Lingkung, involving two physics teachers and 32 tenth-grade students in Phase E. A descriptive statistical analysis method was employed, utilizing questionnaire data, written performance assessments, and documentation of Mid-Semester Assessment (MSA) scores. The results show that the learning process still relies on conventional media and has not yet incorporated ICT effectively. Students demonstrated low levels of knowledge (average 42.59%) and communication skills (average 41.29%). Furthermore, teachers have not optimally integrated the ethnoscience approach and the PBL model into their instruction. Based on these findings, an E-LKPD design was developed as an innovative solution to enhance the quality of 21st-century learning, particularly in delivering contextual and meaningful content on global warming.
Analisis Kebutuhan Pengembangan E-LKPD Pencemaran Lingkungan Terintegrasi PjBL untuk Memfasilitasi Pengetahuan dan Keterampilan Berpikir Kreatif Siswa Nabila, Yafiatul; Asrizal, Asrizal; Amir, Harman; Novitra, Fuja
Jurnal Pendidikan Tambusai Vol. 9 No. 2 (2025): Agustus
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai, Riau, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jptam.v9i2.30955

Abstract

Penelitian ini berfokus pada analisis kebutuhan untuk mengembangankan E-LKPD terintegrasi model Project Based Learning (PjBL) khususnya untuk materi pencemaran lingkungan.Tujuan utamanya adalah menciptakan E-LKPD yang meningkatkan pengetahuan dan keterampilan berpikir kreatif. Kondisi awal di SMAN 1 Lembah Gumanti menunjukkan bahwa LKPD yang digunakan belum memenuhi krateria LKPD yang baik, serta belum mendukung pengembangan pengetahuan dan keterampilan berpikir kreatif siswa. Selain itu, guru disekolah tersebut belum menerapkan pembelajaran terintegrasi PjBL. Penelitian ini mengadopsi jenis penelitian pengembangan dengan menggunkanan model Hannafin & Peck sebagai kerangka kerjanya. Hasil analisis awal mengidentifikasi bahwa pengetahuan dan keterampilan berpikir kreatif masih tergolong rendah. Hal ini diperkuat dengan nilai rata-rata ujian akhir semester fisika yang hanya 63,25, dibawah krateria ketuntasan minimum 75. Rata-rata indikator berpikir kreatif yang masih rendah dengan persentase masing masing indikatornya yaitu keluwesan 39%, kelancaran 37%, keaslian 23%, dan elaborasi 29%. Oleh karena itu, pengembangan E-LKPD terintegrasi PjBL menjadi solusi untuk meningkatkan pengetahuan dan keterampilan berpikir kreatif siswa, serta mendukung inovasi pembelajaran sesuai Kurikulum Merdeka.
Threshold Value of Atmospheric Stability Indices During Thunderstorm Events at Minangkabau International Airport Ari Nuryadi; Sudiar, Nofi Yendri; Hamdi, Hamdi; Amir, Harman
Jurnal Ilmu Fisika Vol 17 No 2 (2025): September 2025
Publisher : Jurusan Fisika FMIPA Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jif.17.2.201-213.2025

Abstract

Thunderstorms are a significant challenge for aviation operations, especially in tropical regions such as West Sumatra. This study aims to determine threshold values for six atmospheric stability indices—Convective Available Potential Energy (CAPE), K-Index (KI), Lifted Index (LI), Showalter Index (SI), Severe Weather Threat Index (SWEAT), and Total-totals Index (TTI)—to predict thunderstorm events at Minangkabau International Airport (MIA). Radiosonde and daily synoptic reports from 2018–2022 were analyzed using Rawinsonde Observation Programs (RAOB) and Statistical Package for the Social Sciences (SPSS) with a dummy regression approach. The model was validated using a confusion matrix, measuring accuracy, precision, and recall. Results show that the use of locally calibrated thresholds leads to higher and more consistent accuracy, precision, and recall values compared to global benchmarks, due to better adaptation to local weather parameters such as vertical humidity, mid-layer temperature, and wind structure. KI, SI, and TTI showed high sensitivity (recall >88%), while LI and CAPE performed moderately. Monthly variation in index performance was observed, with KI, SI, and TTI dominant in the wet and transition seasons, and SWEAT effective in the dry season when shear-driven convection increases. Thus, locally calibrated indices are recommended for thunderstorm early warning systems in aviation.
Analysis Of Seismic Rate Change Based On Spatial Distribution Of Seismotectonics And Deformation Extension In West Nusa Tenggara Aprimanda Mulya Rizki, Rifa; Syafriani; Amir, Harman; Zulhendra, Zulhendra
Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal) Vol. 6 No. 1 (2025): Februari
Publisher : Mataram University

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Abstract

Wilayah Nusa Tenggara Barat memiliki aktivitas kegempaan yang tinggi. Sebelum terjadinya suatu kejadian gempa bumi, terlebih dahulu didahului oleh keadaan seismik tenang. Tujuan dari penelitian ini untuk mengetahui perubahan laju seismik yang diamati dari fenomena seismik tenang dan luas deformasi. Metode perubahan laju seismik yang digunakan adalah distribusi spasial z-value. Dan metode luas deformasi yang digunakan adalah rumusan Utsu dan Seki untuk gempa bumi M7,0 pada tanggal 5 Agustus 2018 dengan input magnitudo permukaan. Penelitian ini menggunakan data dari website USGS periode 1983-2023. Pada penelitian ini terdapat tiga zona fokus penelitian yaitu gempa bumi tahun 2009 (M6,6), gempa bumi tahun 2018 (M7,0) dan gempa bumi tahun 2018 (M6,9). Dengan menggunakan metode distribusi spasial z-value, wilayah dibagi menjadi beberapa grid. Nilai z dihitung pada setiap grid dan menggambarkan perubahan laju seismik. Fenomena tersebut dapat dilihat berdasarkan perubahan laju seismik yang telah diperoleh. Hasil yang diperoleh, pada zona pertama terjadi peningkatan aktivitas seismik sebelum gempa bumi 2009, zona kedua dan zona ketiga terjadi fenomena seismic quiescence yang mendahului gempa bumi 2018. Berdasarkan sebaran spasial z-value awal tahun 2023, terjadi fenomena penurunan aktivitas seismik di sebagian wilayah Nusa Tenggara Barat. Serta terjadi deformasi sebesar 1.091,44 km2 pada gempa bumi M7,0 tanggal 5 Agustus 2018. Hal ini patut diduga sebagai awal gejala gempa bumi di masa mendatang .
Geophysics Quantitative Research Mapping of Geomagnetic Method Implementation for Geothermal Exploration: A Bibliometric Analysis Magribi, Fatin; Asrizal, Asrizal; Amir, Harman; Fitri, Leni
Journal of Experimental and Applied Physics Vol 3 No 3 (2025): September Edition
Publisher : Department of Physics, Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jeap.v3i3.106

Abstract

Indonesia is the second country with the largest geothermal potential in the world because Indonesia has many volcanoes and active tectonic activity causes the formation of geothermal energy around the mountain. The population growth rate in Indonesia is soaring, this condition is inversely proportional to the availability of non-renewable energy in Indonesia. The solution is to look for alternative energy substitutes, namely renewable energy, for example geothermal. This study aims to see the development and trends in the use of geomagnetic methods for geothermal exploration. The method used is bibliometric with a quantitative approach. Data retrieval and processing used the publish or perish application integrated with Google Scholar. The data used were 200 articles published on Google Scholar during 2015-2025 and 80 keywords found. Data analysis techniques by looking at the development of article trends each year, data network visualization, data overlay visualization and data density visualization. The results obtained from publications with the topic of geomagnetic method utilization trends for geothermal exploration in 2015-2025 increased every year. For the results of data network visualization, not only Indonesia but various international countries have also begun to utilize geothermal. The results of the visualization of Indonesia's geothermal data overlay were much sought after in 2019.
Hydroponic Plant Nutrition Measurements System using Display Smartphone Internet Based of Things Dwina Melisa; Asrizal, Asrizal; Yulkifli, Yulkifli; Hufri, Hufri; Amir, Harman
Journal of Experimental and Applied Physics Vol 2 No 1 (2024): March Edition
Publisher : Department of Physics, Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jeap.v2i1.38

Abstract

Hydroponics is an alternative for people who want to garden, but don't have enough space to grow crops. The most important issue that must be considered in cultivation is the provision of sufficient nutrients for plants. Lack of nutritional value results in less maximum yields. Nutritional measurements can be carried out without having to go to the cultivation site. The purpose of this study was to determine the performance specifications of the nutrient measurement system components for hydroponic plants. Determine the precision and accuracy of the nutrient measurement system on the results of limited-scale tests and field-scale test results. This type of research is engineering research. The data analysis technique used is descriptive data analysis and error analysis. From the data analysis it can be stated that three research results are first, the specification of system components includes sensor performance, ESP8266, LCD, Blynk. Second, the precision of the average nutrition on a limited scale is 99.97% and the average accuracy is 99.14%. Third, precision of nutrition on a field scale is 99.47% and the average accuracy is 99.14%. Field-scale test results were carried out for 3 days to obtain varied data. For cultivators of hydroponic plants it is useful for measuring nutritional value so they no longer make measurements manually.
Design of a modeling tool for wheel connected with a belt using speed and time control for video tracker analysis Sari, Reza Novita; Asrizal, Asrizal; Amir, Harman; Mairizwan, Mairizwan
Journal of Experimental and Applied Physics Vol 2 No 3 (2024): September Edition
Publisher : Department of Physics, Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jeap.v2i3.63

Abstract

The influence of the advances of science produces technological innovations that leverage on education, economics, social and self-development. In education, design of laboratory experimental modeling tools continues to be carried out by researchers to improve learning effectiveness. Wheel movement experiments related to belts include one of physic learning activities. The parameter measured from the creation of modeling tool is the wheel speed and analysis of wheel motion related to the belt. The system can be controlled in speed and time using Blynk application. Video recordings are used as circular motion analysis material on Tracker applications. The design of system is a box size 35 cm in length, 20 cm in width and 18 in height consisting of one switch, LCD, and two wheels connected by a belt. Wheel 1 has a diameter of 15 cm and wheel 2 is 10 cm. Based on data analysis, the results of physical parameters were obtained with high accuracy and precision values using standard measuring instruments, namely tachometers, calculation of the theoretical formula. The system's precision was 98.84% and speed accuracy for 30 rpm, 50 rpm and 80 rpm were 99.3%, 99.19% and 99.93%. Frequency values increased according to the increase in input speed and compared to the reverse period.  The angle speed will increase as the wheel spokes become smaller. So, the wheel modeling tool related to the belt using speed and time control with the Blynk application as well as the Tracker video alysis can work effectively and validly.
Design and Build an Automatic Feeding System for Catfish Farming based-on Internet of Things (IoT) Fajri, Mukhlis Surito; Asrizal, Asrizal; Amir, Harman; Mairizwan, Mairizwan
Journal of Experimental and Applied Physics Vol 2 No 4 (2024): December Edition
Publisher : Department of Physics, Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jeap.v2i4.64

Abstract

Fish farming represents a sector aimed at boosting the national economy. The Ministry of Marine Affairs and Fisheries has prioritized programs to support the growth of catfish farming.. However, there are still obstacles experienced by cultivators such as irregularities in feeding time and uneven distribution of feed. Therefore, a solution is needed in the form of designing an efficient system in providing fish feed. The system is developed using ESP32 microcontroller, servo motor, stepper motor, loadcell, and connected to the website for remote control. The system utilizes a motor, load cell, and is integrated with a website for remote operation. This research employs an engineering approach, focusing on system design and testing. The findings indicate that the system achieves an average feed weight measurement accuracy of 98.31%, demonstrating reliable performance in both laboratory and field-scale tests. This system is expected to increase efficiency, practicality, and effectiveness in catfish farming, as well as providing real-time information about feed and feeding schedules.
Design and Construction of a Mathematical Pendulum Harmonic Motion Experiment System Using Arduino Based E18-D80Nk Proximity Sensor Mulyadi, Endri; Asrizal, Asrizal; Amir, Harman; Sari, Mona Berlian
Journal of Experimental and Applied Physics Vol 2 No 3 (2024): September Edition
Publisher : Department of Physics, Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jeap.v2i3.68

Abstract

Experimentation is part of the stages of the scientific method that has a big role to test a phenomenon that occurs. One of the physics lessons proven through experiments is the harmonic motion of a mathematical pendulum. One of the problems with the existing experimental equipment is the variation in rope length and the manual measurement of rope length. One solution to overcome this problem is to create a Mathematical Pendulum Harmonic Motion Experiment System Using the Arduino-based E18-D80NK Proximity Sensor. This tool is designed to facilitate practitioners when conducting experiments and save practicum time. Research was conducted to determine the accuracy and precision of the tool. The experimental results of the device can be displayed on the LCD.  The precision and accuracy of the experimental system with the following details: Average error of 0.65% for comparison of system t value and standard t and average error of 0.55% for comparison of system gravitational acceleration value with theoretical gravitational acceleration for variation of rope length. As for the average value of accuracy of 0.9990583 or 99.9% for a fixed rope length, and the average accuracy of 0.99793367 or 99.7% for a fixed number of oscillations.
Co-Authors - Afrizal - Hamdi Aditio, Rama Aflah Zaharo Akmam Akmam Amali Putra Amirullah, Fajar Fikri Anzuye, Ivo Jihan Aprimanda Mulya Rizki, Rifa Ari Nuryadi Asrizal Asrizal Aulia Fitri Bana, Vrielsha Bavitra, Bavitra Chyntia Arman Daya, Ellen Kurniawati Denandra, Alza Desi Anriani Dwina Melisa Fadhila Ulfa Jhora Fajri, Mukhlis Surito Fatni Mufit Fauziah Fauziah Fitri, Leni Fitri, Mutiara Nurul Fuja Novitra Hamdi , Hamdi Hamdi Hamdi Hamdi Hamdi Hamdi Rifai Handayani, Silvia Sri Hayyu Yumna Hermanda, Richi Junia Hidayati Hidayati Hidayati Hidayati Hufri Hufri Iing Pebrika Janna, Anisa Juliana Dekriani Letmi Dwiridal Letmi Dwiridal Madinah, Nur Magribi, Fatin Mahrizal Mahrizal Mairizwan, Mairizwan Masril Masril Maulida, Yulia Mia Azhari Miftahul Arrazi Mona Trisna Cahyati Muhammad Hafiz Mulyadi, Endri Murtiani Murtiani Mutiara Novichri, Viona Nabila, Yafiatul Nanda, Popi Nira Aslinda Nofi Yendri Sudiar Pakhrur Razi Pramita Syafrina Putri, Shinta Maharani Rahmat Hidayat Ratnawulan Ratnawulan . Rifqa Hayati Rinadi, Aulia Riri Jonuarti Risky Wahyuni Riyasni, Selma Rozi, Hanifsyah Saint Saputra Salsabila, Salsabila Saqilah, Alya Sari, Mona Berlian Sari, Reza Novita Sendi Mutia Solly Aryza Sovia Marsilin Suci Khairani Suherman, Dea Stivani Sumanti, Syahputri Syaflita, Dina Syafriani Syafriani Syafriani, Syafriani Syafriani, - Syerly Kumala Vera Yunita Wardatul Fajriyaty Wulandari, Mia Yelvi Elia Yendri Sudiar, Nofi Yenni Darvina Yosi Elsa Wahyuny Yulkifli Yulkifli Zatil Ismah, Amirah Zikri, Ahmad Raihan Zulhendra Zulhendra Zulhendra Zulhendra Zulhendra, Zulhendra