JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah)
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Pengaruh Ketebalan Lapisan Tipis ZnO terhadap Kinerja Sel Surya Perovskit Fleksibel
No full textPhotoelectrode preparation that requires high heating temperatures will hinder the future development of PSCs on flexible plastic substrates. Therefore, ZnO is a viable alternative for flexible PSCs because it can be processed at low temperatures. This research focuses on the influence of ZnO photoelectrode layer thickness on the optical properties and performance of PSCs. The transmittance of ZnO thin films was found to be more than 50% in each sample. In addition, the bandgap obtained ranged from 3.12 to 3.20 eV. The efficiency results are 0.90×10-5% at a thickness of 10 µm, 1.09×10-5% at a thickness of 8 µm, 2.68×10-5% at a thickness of 6 µm, and the best efficiency is 4.31×10-5% at 4 µm thickness. Based on the results of research that has been carried out, reducing the thickness of the ZnO photoelectrode layer can increase the transmittance and efficiency of solar cells so that solar cell performance increases
Virtual Laboratory in Physics Education: Penguasaan Konsep Mahasiswa dalam Mata Kuliah Fisika Inti
No full textVirtual Laboratory (V-Lab) is a media platform for interaction and visualization of learning for practicum-based courses. V-Lab is a solution to learning problems due to the lack of real laboratory facilities as well as an alternative for practicums that require a high level of safety. The purpose of this study was to determine students' mastery of concepts after using the V-Lab in the core Physics course. The method used is quasi-experimental. The research subjects were 15 Unuha physics education students. The data collection technique is a concept mastery test. The results showed that the increase in mastery of the concept was 0.432 with moderate criteria, while based on the paired sample test, it was known that the sig. (2-tailed) is 0.000 <0.05, then Ho is rejected and Ha is accepted. So it can be concluded that there is an average difference between pre-test and post-test concept mastery, which means that there is an influence of V-Lab application in increasing mastery of core physics concepts. The data shows that the Virtual Laboratory is effectively used to improve mastery of the concepts of core physics courses
Pengembangan Majalah Fisika Pada Materi Usaha dan Energi Terintegrasi Islam
No full textReading is one of the most important efforts in the learning process. Student learning outcomes, especially business and energy materials, are still low due to the low interest in reading/student literacy, so media is needed that can increase students' reading interest. The purpose of this research is the development of learning media in the form of physics magazines that Islamic Integrated. The development of Islamic integrated magazine media is proceeds using the ADDIE development model. The results showed the results of material expert assessment with a percentage of 72.2% (feasible), media expert assessment with a percentage of 84% (feasible), and interpretation expert assessment with a percentage of 73.3% (feasible). In the trial, students obtained a good and positive response, by obtaining an average percentage of 79.54% with good and decent criteria. From the data from the expert assessment, the learning media for Islamic integrated physics magazines developed is declared feasible and can be used as a learning medium in Business and Energy materials
Profil Awal Kemampuan Representasi Ilmiah Calon Guru Fisika pada Pembelajaran Fisika Modern
No full textThis research was conducted with the aim of determining the ability to learn physics in physics education students in solving physics problems using various types of representation modes. This research was conducted using descriptive qualitative approach. A descriptive qualitative approach was carried out by conducting literature studies in previous research journals to support the validity of this research. The results showed that physics education students are easier to solve problems about modern physics by using the image and graph representation mode than other representation mode
Pengujian Validasi Alat Peraga Instalasi Listrik 1 Phase dalam Perkuliahan Fisika Dasar 2
No full textThis study describes specifically the feasibility testing procedure of the 1-phase electrical installation teaching aids that have been developed for the Basic Physics 2 course, Physics Education Study Program, Faculty of Teaching and Education, University of Muhammadiyah Prof. Dr. HAMKA. The instrument used in this study was a response questionnaire for material experts and media experts (lecturers and physics teachers). Feasibility testing is carried out through validation to material experts and media experts. The steps taken in carrying out the validation test are determining the type of instrument, referring to expert theory in compiling a questionnaire grid, compiling a questionnaire grid, and conducting data analysis. The final result of the due diligence test was 87.69% by material experts which consisted of aspects of material relevance, material organization and learning. While the final result for media experts is 86.15% consisting of aspects of media form, media quality and media function. Thus the teaching aids that have been developed have fulfilled the validity procedure with a very valid category
Studi Awal Sonifikasi Pada Data Gerak Parabola Berbantuan Arduino Uno R3 Atmega328
No full textParabolic motion is the typical phenomenon in classical mechanics. The students are able to understand the concept by reading the data in the parabolic function. However, there is limited material for visual impaired students to study the parabolic motion data. One of the solutions to overcome this problem is the parabolic motion experiment development using sonification method. Research has been carried out to analyze the accuracy of the frequency produced by the speakers in data conversion assisted by Arduino Uno. The research also analyzes the effect of elevation angle variations on the resulting frequency changes. The data collection process is carried out by analyzing the percentage of accuracy using the average technique of the data recorded by the Phyphox application. The data analysis of the Phyphox application is compared with the data obtained from the Tracker application. From the results of data analysis obtained the percentage value of the velocity for the angle 30o, 45o, and 70o were 99.92%, 99.67%, and 98.42%, respectively. Therefore, it can be said that the preliminary sonification study is feasible to be used in physics experiments on parabolic motion learning, especially for visual impaired students. The final plotting result of this research shows that the frequency versus time at each angle produces a graph in the parabolic form. While the effect of angle variations on frequency changes is that the larger the angle, the slower it will reach the peak frequency
Analisis Nilai Kalor dan Laju Pembakaran Arang Cangkang Buah Karet
No full textRubber fruit shells are found as agricultural waste. Many farmers have not used rubber fruit shells. Therefore, the researchers made alternative fuels from rubber fruit shells containing 60-80% cellulose and 5-20% lignin. The research objective was to analyze the calorific value and burning rate of rubber fruit shell charcoal. The combustion rate test is carried out by burning charcoal and measuring how long it takes to turn into ash, and the mass of the burned ash. The heating value is done by making a simple furnace from a can filled with charcoal with a mass of 5g, 10g, 15g, 20g, 25g and 30g. 200ml of water is placed on the stove until it boils, measure the time and temperature when it boils. The result of the longest burning rate is 2.12g / minute. The heating value that results in high temperatures and large coals is 332.4 kJ. The conclusion of this study is that rubber fruit shells which have a large mass are very good to be used as an alternative fuel with a very high combustion rate and calorific value
Learning Management System Acceptance Rate Among Vocational School Physics’ Student
No full textLearning management systems (LMS) have become a key component of teaching and learning in schools. However, the evaluation of student acceptance rates on its implementation so far has not been widely reported. Therefore, this study aims to evaluate the acceptance rate of LMS among students in terms of gender and grade level. The level of student acceptance of the LMS in administration through an online survey using Google forms. A total of 141 students who took physics subjects from class XI and XII, one of the vocational high schools were involved. Acceptance of the LMS uses a 21-item LMSAS (Learning Management System Acceptability Scale) developed by Sezer and Yilmaz in 2019. The LMSAS uses a 5-point Likert scale, from 1 (Strongly Disagree) to 5 (Strongly Agree). LMS acceptance components include Performance Expectancy (PE), Effort Expectancy (EE), Facilitating Condition (FC), and Social Influence (SI). Wright map and Logit Value of Person (LVP) were used to assess LMS acceptance among students. The analysis results show that student acceptance of the LMS is distributed chiefly at a good level of acceptance. As many as 84% of students received the LMS. Based on gender, 65% of male students are quite accepting of the LMS. Based on class, class XII students are more dominant (35.5%) receiving LMS. Thus, most students in public vocational high schools welcome the LMS well
Analisis Persepsi Kebutuhan Guru SMA dalam Mengimplementasikan Model Project Based Learning (PjBL) Terintegrasi Budaya Lokal
No full textThe problem faced by secondary education is the low ability in 3 fields, namely mathematics, science, and literacy. Therefore, it is necessary to innovate a project-based learning (PjBL) model integrated with local culture. The PjBL learning model can collaborate on several abilities of students, namely abilities in the fields of science, mathematics, and literacy simultaneously. Local culture is carried out to raise local wisdom in learning. This study aims to analyze the needs of high school physics teachers in developing an integrated project-based learning (PjBL) model for local culture. The research method used is descriptive qualitative. Research data were collected through interviews and observations. The interview was conducted by a high school physics teacher in the Depok area. From the results of the study, it was obtained that the project-based learning (PjBL) model integrated with local culture needs to be applied in physics learning in high schools in the Depok region. Teachers also need training on the application of the project-based learning (PjBL) model integrated with local culture to improve the quality of physics learning models in schools
Prediksi Perubahan Iklim Ekstrem di Kota Palembang dan Kaitannya dengan Fenomena El Niño-Southern Oscillation (ENSO) Berbasis Machine Learning
No full textThe purpose of this study is to provide predictions of climate conditions and trend of temperature rise in the city of Palembang in the 21st century. The BMKG station data used, namely SK Palembang and SM SMB II from the 2000-2020 period were analyzed based on the agreement of the Expert Team for Climate Change Detection and Indices (ETCCDI). ). Analysis using google colab shows that rainfall in the city of Palembang has a fairly high variability and a decrease in the number of rainy days that occur in the city of Palembang with the trend of air temperature, namely TMAXmean and TMINmean, has increased significantly by 2.40C for 50 years. Based on the correlation analysis between rainfall and El Niño-Southern Oscillation (ENSO) with Google Colab, a negative relationship was found. The El Niño-Southern Oscillation (ENSO) index used is the Niño 3.4 index. The study concluded that although the geographical location of Palembang city is located in the Asian Monsoon area, the ENSO phenomenon does not significantly affect rainfall variability in Palembang city