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JRFES
Published by Universitas PGRI Sumatera Barat
ISSN : 24073563     EISSN : 25033425     DOI : https://doi.org/10.22202/jrfes.2022.v9i2
Core Subject : Science, Education,
Education Physics Other
JRFES scopes are the result of research on physics research and physics education. JRFES is focused on publishing original research results that have not been published anywhere. Issues published by JRFES cover the areas of education namely planning, implementation, and evaluation of Education and the field of physics. This journal publishes original articles on the latest issues and trends occurring internationally in science curriculum, instruction, learning, policy, and preparation of science teachers with the aim to advance our knowledge of science education theory and practice. Moreover, this journal also covers the issues concerned with environmental education & environmental science. JRFES is dedicated to all physics education practitioners. The coverage of JRFES includes: experimental research, action research, qualitative research, quantitative research, and development research (model, media, and learning evaluation) aimed to improving the quality and building innovation in Physics Education, includes: Experimental Research Class Action Research Qualitative Research Quantitative Research Model Learning Development Media Learning Development Additional Learning Materials Development Learning Evaluation Literature Study    The articles in JRFES also include developments and researches in Classical Physics, and Modern Physics (theoretical studies, experiments, and its applications). Subject areas suitable for publication include, but are not limited tothe following fields: Nuclear and Radiation Physics Electronics and Instrumentation Physics Materials Physics Theoretical and Computational Physics
Arjuna Subject : Fisika dan Astronomi - Fisika dan Astronomi (Lain-Lain)
Articles 5 Documents
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Search results for , issue "Vol 10, No 2 (2023): Jurnal Riset Fisika Edukasi dan Sains" : 5 Documents clear
STUDENT SCIENTIFIC ATTITUDES TO THE VESTA SOFTWARE AS LEARNING MEDIA OF CRYSTAL STRUCTURE Nadiyyah, Khoirotun; Aprianti, Rika; Nisa, Uliya Khoirun; Gusti, Valeria Yekti Kwasaning
JRFES (Jurnal Riset Fisika Edukasi dan Sains) Vol 10, No 2 (2023): Jurnal Riset Fisika Edukasi dan Sains
Publisher : Universitas PGRI Sumatera Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22202/jrfes.2023.v10i2.6583

Abstract

In solid-state physics, the crystal structure was the subject that one must learn and understand. In providing an understanding of the concept, educators need to use learning media. At this time, learning media has developed rapidly, especially digital visual media. Vesta Software is a media that can visualize and simulate crystal structures in 3D. This research aimed to analyze students' scientific attitudes to the Vesta software as a learning media of crystal structure. Data collection used a Likert scale with a scientific attitude questionnaire on curiosity, honesty, perseverance, critical thinking, open-mind, cooperation, and creativity. The method in this research was descriptive qualitative using data triangulation. That was obtained, the seven students' scientific attitudes were "very good", and the most dominant was "curiosity" with 88.03%. Furthermore, Vesta software could be an alternative learning media to crystal structures because it was easy to use and learn, increasing the student’s knowledge and understanding. 
EFFORTS TO INCREASE THE COMPETENCE OF PROSPECTIVE PHYSICS TEACHERS IN THE FACE OF THE MERDEKA BELAJAR CURRICULUM AT THE MADRASAH ALIYAH LEVEL juita, dewi
JRFES (Jurnal Riset Fisika Edukasi dan Sains) Vol 10, No 2 (2023): Jurnal Riset Fisika Edukasi dan Sains
Publisher : Universitas PGRI Sumatera Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22202/jrfes.2023.v10i2.7013

Abstract

This study aims to find out what efforts can be made by micro teaching lecturers in their lecture classes to increase the competence of prospective physics teachers and to determine the level of student satisfaction with the efforts made by micro teaching lecturers. . This study uses a quantitative and qualitative approach with descriptive methods. Quantitative descriptive method is used to present student satisfaction data in the form of percentages and then a qualitative approach is used to explain what efforts have been made by micro teaching lecturers for the students they teach. The sample in the study were 9 students who took the micro teaching course. This research resulted in several efforts that could be made by teachers in improving the competence of prospective physics teacher students, namely conducting material presentations related to the Merdeka Belajar curriculum material, providing instructions regarding how to make teaching modules along with examples, examples of learning videos in the Merdeka Belajar curriculum, and criticizing practice. Teach on an ongoing basis. The overall level of student satisfaction with the efforts made by lecturers in the micro teaching course is 83.33%. The most satisfying effort for students is the criticism given by supporting lecturers and colleagues on student teaching performances which are carried out three times in one semester.
NANO STRUCTURE AND MAGNETIC PROPERTIES OF Zn FERRITE AND ZnCuNi FERRITE USING THE Co-PRECIPITATION METHOD SAGALA, LIDIA PUSPITA SARI
JRFES (Jurnal Riset Fisika Edukasi dan Sains) Vol 10, No 2 (2023): Jurnal Riset Fisika Edukasi dan Sains
Publisher : Universitas PGRI Sumatera Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22202/jrfes.2023.v10i2.7647

Abstract

AbstractZn Ferrite and ZnCuNi Ferrite with a composition of ZnFe2O4 and Zn0.9Cu0.05Ni0.05 Fe2O4 have been synthesis using the co-precipitation method. Zn Ferrite and ZnCuNi Ferrite have been synthesized at 100 oC. Structure, morphology and magnetic properties were obtained by the characterization of  X-ray Difraction (XRD), Field Emission-Scanning Electron Microscope (FE-SEM) and Vibrating Sample Magnetometer (VSM). The X-Ray Diffraction (XRD) characterization showed the cubic spinel structure of Zn Ferrite and ZnCuNi Ferrite. The microstructure and magnetic properties have been changed with the addition of Cu2+ and Ni2+ to ZnFe2O4. The grain size increased from 13.4098 nm to 13.7184 nm. The VSM test results also showed an increase in saturation mangetization from 14.76 emu/g to 26.67 emu/g. Meanwhile, the magnetic coercivity value experienced the opposite, which decreased from 87.85 Oe to 87.65 Oe. The addition of Cu2+ and Ni2+ increases the magnetization of the spinel ferrite and decreases its magnetic coercivity.  Keywords: FE-SEM; Magnetic Properties; Microstructure; VSM; XRDAbstrakZn ferit dan ZnCuNi ferit dengan komposisi ZnFe2O4 dan Zn0.9Cu0.05Ni0.05Fe2O4 masing-masing telah disintesis dengan menggunakan metode kopresipitasi. Zn ferit dan ZnCuNi ferit tersebut telah disintesis pada suhu 100 oC. Struktur, morfologi dan sifat kemagnetannya diperoleh dari karakterisasi X-ray Diffraction (XRD), Field Emission – Scanning Electron Microscope (FE-SEM) dan Vibrating Sample Magnetometer (VSM). Karakterisasi X-ray Diffraction (XRD) menunjukkan struktur spinel kubik pada Zn ferit dan ZnCuNi ferit.  Mikrostruktur dan sifat magnetik mengalami perubahan dengan adanya penambahan Cu2+ dan Ni2+ pada ZnFe2O4. Ukuran butir meningkat dari 13,409 nm menjadi 13,718 nm. Dari hasil uji VSM juga menunjukkan adanya peningkatan mangetisasi saturasi dari 14,76 emu/g menjadi 26,67 emu/g. Sementara nilai koersivitas magnet mengalami sebaliknya, yaitu menurun dari 87,85 Oe menjadi 87,65 Oe. Penambahan Cu2+ dan Ni2+ meningkatkan magnetisasi spinel ferit dan menurunkan nilai koersivitas magnetnya.  Kata kunci : FE-SEM; Sifat Magnetik; Mikrostruktur; VSM; XRD  
ANALYSIS OF PTKIN SCIENCE LABORATORY NEEDS IN WEST SUMATRA Zulpadrianto, Zulpadrianto
JRFES (Jurnal Riset Fisika Edukasi dan Sains) Vol 10, No 2 (2023): Jurnal Riset Fisika Edukasi dan Sains
Publisher : Universitas PGRI Sumatera Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22202/jrfes.2023.v10i2.7487

Abstract

Science laboratory needs analysis research has been conducted. This study aims to analyze the laboratory needs of PTKIN in West Sumatra. This analysis includes organizational structure, management personnel needs and laboratory development. The results showed that the organizational structure of the science laboratory at PTKIN West Sumatra had been arranged. However, PTKIN in West Sumatra still lacks laboratory management personnel so that a formula is developed to calculate personnel needs. Furthermore, the laboratory needs to evaluate the governance and development of laboratory functions. The function that was previously only as a place of education needs to be improved as a place of research. The development of research laboratories is in line with increasing the volume of research equipment, K3 laboratories and professional personnel in their fields.
CLUSTERING NACL SOLUTION CONCENTRATION BASED ON IMPEDANCE, CONDUCTIVITY, AND TDS PARAMETERS USING A PCA APPROACH WITH K-MEANS CLUSTERING Wismaya, Herenda Sela; Sugianto, Wahyu
JRFES (Jurnal Riset Fisika Edukasi dan Sains) Vol 10, No 2 (2023): Jurnal Riset Fisika Edukasi dan Sains
Publisher : Universitas PGRI Sumatera Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22202/jrfes.2023.v10i2.7548

Abstract

A research study requires an approach to implement research data more optimally and be easily interpretable. The PCA approach with K-means clustering is an appropriate method for clustering NaCl solution concentrations based on impedance, TDS, and conductivity parameters. The results of this method indicate that the first and second principal components with eigenvalues of 2.7208 and 1.2728, respectively, represent 68.0% and 31.8% of the total variability. Cumulatively, these two principal components account for 99.8% of the total variance. This suggests that the approach used aligns well with the tested parameters. Therefore, it can be concluded that the PCA approach with K-means clustering can be used to cluster NaCl solution concentrations, distinguishing between low and high concentrations of NaCl solutions

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