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All Journal Pendas : Jurnah Ilmiah Pendidikan Dasar JURNAL PENELITIAN PENDIDIKAN MIPA Fisitek : Jurnal Ilmu Fisika dan Teknologi JURNAL PENDIDIKAN TAMBUSAI Jurnal Review Pendidikan dan Pengajaran (JRPP) Jurnal Eduscience (JES) Didaktik : Jurnal Ilmiah PGSD STKIP Subang Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal) EINSTEIN (E-JOURNAL) FARMASAINKES Jurnal Penelitian Pendidikan MIPA ASIAN: Indonesian Journal of Learning Development and Innovation Journal of Golden Generation Education
Juliandi Siregar
Universitas Muslim Nusantara Al Washliyah
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Health Professions Immunology & microbiology Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Physics Public Health Social Sciences Other

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Journal : Jurnal Eduscience (JES)

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Analisis Simulasi Hubungan Suhu Sintering Dengan Nilai Kekerasan Dan Kekuatan Patah Keramik Alumina Siregar, Juliandi; Seragih, Marnanda; Lubis, Sahara
JURNAL EDUSCIENCE (JES) Vol 7, No 1 (2020): Jurnal Eduscience (JES)
Publisher : Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jes.v7i1.1676

Abstract

This research uses variable sintering temperature of 1300 0C, 1400 0C, 1500 0C and 1600 0C mixed with mullite additives 0%, 10%, 15%, 20% and 25%. As parameters of the study are the vickers hardness and bending strength. In this study a computational simulation has been designed with the Matlab program to analyze the relationship between the Vickers Hardness and bending strength to the sintering temperature of alumina ceramics (Al2O3) with variations in the addition of mullite additives.The best result of the hardness value which is close to the literature value is the 25 % mullite additive composition at a sintering temperature of 1600 0C which is 475 kgf / mm2. The best results of fracture strength values close to the literature value is the composition of the mullite additive 20% at a sintering temperature of 1600 0C which is 45,800 lbf / in2. From the results of simulation analysis for hardness and strength of the fractures can be obtained a constant change due to the constant increase in sintering temperature.Keywords: Matlab, Vickers Hardness and Bending Strength, Alumina Ceramics, Mullit.
Analisis Simulasi Hubungan Suhu Sintering Dengan Nilai Kekerasan Dan Kekuatan Patah Keramik Alumina Marnanda Seragih; Sahara Lubis; Juliandi Siregar
JURNAL EDUSCIENCE (JES) Vol 7, No 1 (2020): Jurnal Eduscience (JES)
Publisher : Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jes.v7i1.1676

Abstract

This research uses variable sintering temperature of 1300 0C, 1400 0C, 1500 0C and 1600 0C mixed with mullite additives 0%, 10%, 15%, 20% and 25%. As parameters of the study are the vickers hardness and bending strength. In this study a computational simulation has been designed with the Matlab program to analyze the relationship between the Vickers Hardness and bending strength to the sintering temperature of alumina ceramics (Al2O3) with variations in the addition of mullite additives.The best result of the hardness value which is close to the literature value is the 25 % mullite additive composition at a sintering temperature of 1600 0C which is 475 kgf / mm2. The best results of fracture strength values close to the literature value is the composition of the mullite additive 20% at a sintering temperature of 1600 0C which is 45,800 lbf / in2. From the results of simulation analysis for hardness and strength of the fractures can be obtained a constant change due to the constant increase in sintering temperature.Keywords: Matlab, Vickers Hardness and Bending Strength, Alumina Ceramics, Mullit.
EXPLORATION OF THE USE OF PHET SIMULATION ON NEWTON'S LAW MATERIALS TO IMPROVE STUDENT PHYSICS LEARNING OUTCOMES Siregar, Juliandi; Mawaddah, Hajar; Khairiah, Khairiah; Berliani, Halimah; Nasution, Lia Afriyanti; Putri, Nur Amelia; Derlina, Derlina; Pramudito, Rafaza; Ehkan, Phaklen
JURNAL EDUSCIENCE Vol 11, No 3 (2024): Jurnal Eduscience (JES), (Authors from Hungary, South Africa, Malaysia, and Ind
Publisher : Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jes.v11i3.6590

Abstract

AbstractThe background to this research is that physics lessons are often considered difficult and less interesting by students, especially because of their abstract nature, the complexity of mathematical calculations, and the difficulty in connecting theory with practice. One of the challenging topics is Newton's Law of motion, which includes the relationship between force, mass and acceleration. This research was carried out at MA Muallimin UNIVA Medan, by applying the Problem Based Learning (PBL) learning model, an innovative learning media that is relevant to development. technology. This research utilizes PHET (Physics Education Technology), an interactive simulation platform developed by the University of Colorado Boulder, to support learning Newton's Laws. PHET allows students to carry out virtual experiments independently with various variables, such as mass, force and surface type, so that student learning outcomes increase. The research method used is quantitative in class X-G. The instrument used is a written test (essay) with a total of 10 questions. It is known that the pretest and posttest data are normally distributed with a significance value of Pretest (0), Posttest (0,), and are declared homogeneous with a significance value Based on Mean (0.245) where the normality and homogeneity test values exceed (>) the real level used in the measurement namely α = 0.05 or 5%. With the help of SPSS, it is known that the average posttest student learning outcomes (85.93) are higher than the pretest (58.80), so it can be concluded that the hypothesis is accepted.  
EFFECTIVENESS OF STELLARIUM APPLICATION IN ENHANCING STUDENT'S UNDERSTANDING: ASTRONOMY CONCEPTS IN PHYSICS EDUCATION Nasution, Lia Afriyanti; Khairiah, Khairiah; Siregar, Juliandi; Destini, Rita; Kurniawan, Chandra; Rusli, Roslinda binti
JURNAL EDUSCIENCE Vol 12, No 4 (2025): Jurnal Eduscience (JES), (Authors from Malaysia, Thailand, and Indonesia)
Publisher : Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jes.v12i4.7274

Abstract

Purpose -This study aims to address the challenges of teaching astronomy in higher education, particularly in institutions with limited observational infrastructure and urban light pollution. The purpose of this research is to investigate the effectiveness of Stellarium, a digital planetarium application, in enhancing students' conceptual understanding of astronomy concepts in Physics Education.Methodology - A quasi-experimental research design was employed, utilizing a pretest-posttest control group format. The sample consisted of 30 undergraduate students enrolled in the astronomy course, who were purposively selected and divided into an experimental group and a control group. The research procedure involved the development of Stellarium-integrated instructional materials, the implementation of teaching interventions, and the administration of pretests and post-tests to assess conceptual understanding. Additional instruments included a questionnaire to capture students' perceptions and documentation of classroom activities. Data were analyzed using paired sample t-tests, independent sample tests, and descriptive statistics.Findings - The results of the initial and final trials showed a significant increase in the experimental group's understanding of astronomical concepts. In contrast, the control group showed minimal improvement. The findings revealed a significant improvement in the experimental group's test scores, with an average gain of 16.6 points (p < 0.05). Students also expressed highly positive perceptions of Stellarium in terms of visual appeal, ease of use, learning motivation, and comprehension of celestial motion. These results suggest that Stellarium is an effective pedagogical tool for enhancing conceptual understanding of astronomy and fostering student engagement.Contribution- The study contributes to the growing body of research on simulation-based learning and offers practical insights into integrating digital technologies in science education, particularly in resource-constrained institutions. It also offers a model for adapting global digital tools to local educational contexts, thereby supporting curriculum innovation in Indonesian higher education.
Co-Authors Andini, Andini Apridayanti, Lisa Asidah Hasibuan Berliani, Halimah Beta Rapita Silalahi Chandra Kurniawan, Chandra Cici Hayati Nasution D. Elysa Putri Mambang Derlina . Elia Putri Husna, Tiflatul Khairiah Khairiah, Khairiah Lia Afriyanti Lia Afriyanti Lia Afriyanti Nasution Lubis, Sahara M Gade M. Gade Mannawasalwa, Zulaika Marnanda Seragih Mawaddah, Hajar Muhammad Rizki Ridwan Rambe Nikma Hanna Mariana Hutabarat Novika, Sutri Nur satriani Sembiring Nurul Huda Hasanah Phaklen Ehkan, Phaklen Pramudito, Rafaza Putri, Nur Amelia Rita Destini Rizki Maulida Rofiqoh Hasan Harahap Rusli, Roslinda binti Safrida Napitupulu Sahara Lubis Seragih, Marnanda Siregar, Masdewani Siregar, Salwina Angraini Siregar, Shinta Marito Sitinjak, Welrino Sujarwo Sutriono Wardani, Hizmi