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POTENSI SEKAM PADI DAN JERAMI SEBAGAI ALTERNATIF MATERIAL AKUSTIK Rohim, Ahmad Minanur; Fianti, Fianti; Nurbaiti, Upik
Physics Education Research Journal Vol 2, No 1 (2020)
Publisher : Faculty of Science and Education, UIN Walisongo Semarang

Technology that is increasingly developing produces equipments in the form of information, communication, production, transportation and entertainment facilities. Most of the equipments produce noises. Noise can be reduced by using acoustic dampers. This study aims to determine the potential for sound absorption from rice husks and straw as natural acoustic materials. Materials used include rice husks, rice straw, and resin. 12 cylindrical samples were made. Samples that have been made are tested using a sound absorption measuring instrument that is the impedance tube to measure the value of the sample sound absorption coefficient. The test results show the value of the sound absorption coefficient (?) can be influenced by the thickness. At a frequency of 500 Hz the value of the sound absorption coefficient (?) for each sample is 0.034dB; 0.030dB; 0.030dB; 0.027dB; 0.026dB; 0.027dB; 0.025dB; 0.025dB; 0.025dB; 0.024dB; 0.024dB; 0.023dB; 0.023dB. The sample material is good in research on materials 1 and 2 which have a sound absorption of 0.034 dB and 0.030 dB.

Changes in Students' Cognitive Structure on the Concept of Diffraction and Light Interference Using PhET Virtual Simulation Syifa, Almira; Darma Putra, Ngurah Made; Darsono, Teguh; Rohim, Ahmad Minanur
Physics Education Research Journal Vol 5, No 1 (2023)
Publisher : Faculty of Science and Education, UIN Walisongo Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/perj.2023.5.1.13658

The concept of diffraction and interference of light is one of the abstract concepts of physics. The process of light diffraction and interference occurs in the abstract. Learning about diffraction and light interference requires media that represent the events. Cognitive structures can represent the quality of students' understanding. Learning Physics is easier to understand through direct experience in the form of practicum. Abstract Physics concepts will be easier to learn with the appropriate visualization. One of the virtual practicums' media uses PhET virtual simulations to improve students' cognitive structure is measured using concept map questions and supported by description questions. The purpose of this research is to increase the cognitive structure of students by using PhET. This research is quantitative research and the experimental design used the experiment method. There are three groups in the experiment, that is a virtual simulation, a real practicum as an experiment class, and a control class. The results of the one-way ANOVA test on the concept map questions showed a significance value (p) 0.05, meaning that there were differences in cognitive structure between groups. The significance value (p) between the virtual simulation group and the real practicum group was 0.014, while the significance value between the virtual simulation group and the control class was 0.00, meaning that there was a significant difference in learning effectiveness between groups. Based on the data of the research concluded that physics learning assisted by virtual simulations can develop students' cognitive structures on the concepts of diffraction and light interference.

Design and Implementation of Siprakfis (Physics Laboratory Practical Management Information System) to Optimize Practical Services in Higher Education Widyastuti, Widyastuti; Rofiudin, Muhammad; Rohim, Ahmad Minanur
Physics Education Research Journal Vol. 6 No. 2 (2024)
Publisher : Faculty of Science and Education, UIN Walisongo Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/perj.2024.6.2.21570

Physics laboratories often face difficulties managing practicums, especially in scheduling, equipment tracking, assessment, and evaluation of practicum results. The mismatch between practicum needs and resource availability usually results in delays, administrative errors, and increased workload of laboratory staff. This study proposes the development of a Physics Laboratory Practicum Management Information System (SIPRAKFIS) to optimize practicum management in physics laboratories. The research method used is R&D with a waterfall development model, which includes communication, planning, modeling, construction, and deployment stages. SIPRAKFIS was developed using the PHP MySQL programming language. System testing was done through unit testing, functionality, usability, and implementation. The study results indicate that SIPRAKFIS is feasible to use in practicum management and can be accessed online via www.labfisikauin.com. Unit testing on the login system was declared victorious. Functional testing obtained good results, namely a functional value of 1. Usability testing obtained a value of 82.59%. Deployment testing showed that the system can be run on various browsers, namely Mozilla Firefox, Google Chrome, and Internet Explorer. SIPRAKFIS can help facilitate the management of practicum services, reduce administrative errors, speed up the practicum scheduling process, and facilitate equipment monitoring and reporting of practicum values. The results of this study can also be further developed for research and testing services.

Changes in Students' Cognitive Structure on the Concept of Diffraction and Light Interference Using PhET Virtual Simulation Syifa, Almira; Darma Putra, Ngurah Made; Darsono, Teguh; Rohim, Ahmad Minanur
Physics Education Research Journal Vol. 5 No. 1 (2023)
Publisher : Faculty of Science and Education, UIN Walisongo Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/perj.2023.5.1.13658

The concept of diffraction and interference of light is one of the abstract concepts of physics. The process of light diffraction and interference occurs in the abstract. Learning about diffraction and light interference requires media that represent the events. Cognitive structures can represent the quality of students' understanding. Learning Physics is easier to understand through direct experience in the form of practicum. Abstract Physics concepts will be easier to learn with the appropriate visualization. One of the virtual practicums' media uses PhET virtual simulations to improve students' cognitive structure is measured using concept map questions and supported by description questions. The purpose of this research is to increase the cognitive structure of students by using PhET. This research is quantitative research and the experimental design used the experiment method. There are three groups in the experiment, that is a virtual simulation, a real practicum as an experiment class, and a control class. The results of the one-way ANOVA test on the concept map questions showed a significance value (p) <0.05, meaning that there were differences in cognitive structure between groups. The significance value (p) between the virtual simulation group and the real practicum group was 0.014, while the significance value between the virtual simulation group and the control class was 0.00, meaning that there was a significant difference in learning effectiveness between groups. Based on the data of the research concluded that physics learning assisted by virtual simulations can develop students' cognitive structures on the concepts of diffraction and light interference.

Design and Implementation of Siprakfis (Physics Laboratory Practical Management Information System) to Optimize Practical Services in Higher Education Widyastuti, Widyastuti; Rofiudin, Muhammad; Rohim, Ahmad Minanur
Physics Education Research Journal Vol. 6 No. 2 (2024)
Publisher : Faculty of Science and Education, UIN Walisongo Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/perj.2024.6.2.21570

Physics laboratories often face difficulties managing practicums, especially in scheduling, equipment tracking, assessment, and evaluation of practicum results. The mismatch between practicum needs and resource availability usually results in delays, administrative errors, and increased workload of laboratory staff. This study proposes the development of a Physics Laboratory Practicum Management Information System (SIPRAKFIS) to optimize practicum management in physics laboratories. The research method used is R&D with a waterfall development model, which includes communication, planning, modeling, construction, and deployment stages. SIPRAKFIS was developed using the PHP MySQL programming language. System testing was done through unit testing, functionality, usability, and implementation. The study results indicate that SIPRAKFIS is feasible to use in practicum management and can be accessed online via www.labfisikauin.com. Unit testing on the login system was declared victorious. Functional testing obtained good results, namely a functional value of 1. Usability testing obtained a value of 82.59%. Deployment testing showed that the system can be run on various browsers, namely Mozilla Firefox, Google Chrome, and Internet Explorer. SIPRAKFIS can help facilitate the management of practicum services, reduce administrative errors, speed up the practicum scheduling process, and facilitate equipment monitoring and reporting of practicum values. The results of this study can also be further developed for research and testing services.

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