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All Journal Jurnal Sains Materi Indonesia JURNAL FISIKA Sainteknol : Jurnal Sains dan Teknologi JURNAL ILMIAH PENDIDIKAN FISIKA AL BIRUNI Journal of Natural Sciences and Mathematics Research JPSE (Journal of Physical Science and Engineering) Unnes Science Education Journal REiD (Research and Evaluation in Education) JIPF (Jurnal Ilmu Pendidikan Fisika) Jurnal Penelitian Pendidikan IPA (JPPIPA) INDONESIAN JOURNAL OF APPLIED PHYSICS UPEJ Unnes Physics Education Journal Journal of Innovative Science Education Journal of Primary Education Journal of Creativity Student Abdimasku : Jurnal Pengabdian Masyarakat Physics Communication Proceeding Seminar Nasional IPA Physics Communication
Mahardika Prasetya Aji
Universitas Negeri Semarang
Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Health Professions Industrial & Manufacturing Engineering Materials Science & Nanotechnology Physics Social Sciences

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Pengembangan Assessment as learning berbasis Strategi Metakognitif ISCACoRe untuk meningkatkan kemampuan pemecahan masalah Desy Widaningrum; Budi Naini Mindyarto; Mahardika Prasetya Aji
Jurnal Penelitian Pendidikan IPA Vol 9 No 5 (2023): May
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i5.2441

Abstract

The purpose of this study is to develop an evaluation instrument for Dynamic Fluid materials with characteristics based on the ISCACoRe metacognitive strategy and determine the quality of the instrument to improve physics problem-solving skills. This study used research and development methods. The subjects of this developing study were 11th grade students at a senior high school in Yogyakarta. The ISCACoRe metacognitive strategy-based physics learning evaluation instrument was prepared in flip modules using the assessment-as-learning model, with characteristics of being independent, flexible, stimulating, and based on digital media. The instrument's validity is 86.25%, and the assessment as learning model's validity is 93.34%, indicating that the expert instrument is appropriate for use in learning evaluation activities. The level of an item's internal consistency is declared valid if  > 0.3961, a total of 8 items are accepted because  > 0.3961, and 2 items are rejected because   < 0.3961.  The Cronbach's alpha method of 0.817 and split-half of 0.875, with very high criteria, were used to obtain the results of the instrument reliability test. The experimental and control group obtained an average score of the normalized gain test (N-Gain) of 56.83%, and 44.10% respectively
Rasch Model Analysis: Development of Literacy Numeracy Assessment Instrument of Electromagnetic Induction Nurul Apriani Susanti; Sarwi Sarwi; Mahardika Prasetya Aji
Physics Communication Vol 7, No 2 (2023): August 2023
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/physcomm.v7i2.46019

Abstract

This research aimed to describe the validity of a numeracy literacy assessment instrument of electromagnetic induction based on minimum capability assessment (MCA) which was develop using Rasch model analysis assisted by Winstep software. The research employed the research and development design with a modified Mardapi model. The instrument was constructed by developing fifteen questions. The analysis of the instrument was utilized to measure the construct and item validity, reliability, item difficulty level, and item discriminatory. This research involved 32 participants in the small-scale test and 206 participants in the large-scale trial. The test result showed that the fifteen questions were suitable to use because it has values that meet the criteria for all measurement variables both on small scale and large-scale tests and could be assess students' numeracy literacy skills.
Application of the Global Warming Learning System (GWLS) as an Effort to Improve Student’s Learning Outcomes and Critical Thinking Ability Astuti, Adina Widi; Mindyarto, Budi Naini; Aji, Mahardika Prasetya; Astuti, Budi; Atun, Cholis
Physics Communication Vol 8, No 1 (2024): February 2024
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/physcomm.v8i1.44920

Abstract

This Classroom Action Research (CAR) aims to improve learning outcomes and critical thinking skills of class X-K SMA Negeri 6 Semarang, through the application of adaptive teaching materials Global Warming Learning System. The learning model used is Problem Based Learning with group investigation method (cycle I) and Project Based Learning with product differentiation (cycle II). CAR is carried out in two cycles, where each cycle consists of four activities, namely action planning, action implementation, observation and reflection which adopts the Kemmis and Taggart models. Data collection techniques used in this study were observation, tests, questionnaires and interviews. Data analysis used a qualitative descriptive approach based on educational outcomes and improving students' critical thinking skills. The results show that there has been an increase in educational outcomes and critical thinking skills (pre-cycle to cycle I) and (cycle I to cycle II). Evidenced by the results of studying at first cycle, which was completed by 15 students (41.67%) and the students' critical thinking skills, the average 71.59% was high category. Meanwhile the educational outcomes of physics cycle II which were completed were 28 students (77.78%) and the ability to think critically with an average 78.88% was high category
Study on the Effect of Sulfuric Acid Addition on the Porosity and Permeability Properties of Nata De Soya Porous Membranes Lailatul Qodriyah, Nur; Masturi, Masturi; Harnina Bintari, Siti; Aji, Mahardika Prasetya
JPSE (Journal of Physical Science and Engineering) Vol 9, No 1 (2024): JPSE (Journal of Physical Science and Engineering)
Publisher : Universitas Negeri Malang

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Abstract

Porous nata de soya membranes are a promising filtration material due to their good mechanical and chemical properties. However, further modifications are necessary to enhance their filtration performance, one of which involves the addition of sulfuric acid. Therefore, the objective of this study is to investigate the effect of sulfuric acid addition on the porosity and permeability properties of porous nata de soya membranes. Porosity tests using Scanning Electron Microscope (SEM) were conducted to analyze the microstructure of the nata de soya membranes. The SEM characterization results provide detailed images of the membrane's pore structure, including size, distribution, surface area, and pore density. Additionally, permeability analysis was performed using Darcy's law. The results indicate that the addition of sulfuric acid affects the porosity and permeability of the membranes. Increasing the sulfuric acid concentration from 15% to 25% resulted in a decrease in porosity from 51% to 47%. The pore size increased from 0.35 µm at 15% to 0.86 µm at 25%. Furthermore, the surface area and pore density decreased with the increasing concentration of sulfuric acid, indicating a reduction in membrane effectiveness in filtration processes. The membrane's permeability decreased drastically from 2.55287 x 10-9 m² at 15% to 2.12739 x 10-12 m² at 25%, demonstrating that sulfuric acid causes pore closure and structural damage to the membrane, reducing its ability to allow fluid to pass through. The implications of this research suggest that porous nata de soya membranes are effective for microfiltration of bacteria (such as E. coli) and wastewater filtration.
[RETRACTED] Identifikasi Gerakan Tanah Longsor Dengan Pendekatan Ground Shear Strain Menggunakan Pengukuran Mikroseismik di Graha Taman Nirwana Kota Semarang Supriyadi Supriyadi; Rahmad Hafid Hidayatullah; Mahardika Prasetya Aji; Taufik Nur Fitrianto; Rini Kusumawardani
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 10, No 01 (2020): April
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (594.638 KB) | DOI: 10.13057/ijap.v10i01.24674

Abstract

This article was retracted due to the following reasons :Article: Identifikasi Gerakan Tanah Longsor dengan Pendekatan Ground Shear Strain Menggunakan Pengukuran Mikroseismik di Graha Taman Nirwana Kota Semarang, Vol. 10 No.1 (2020), pp: 32-36 Author: Supriyadi, R.H, Hidayatullah, Mahardika Prasetya Aji, Taufik Nur Fitrianto, Rini KusumawardaniThis article has been retracted by Publisher with the reason of improper data and error in data processing. All authors of the paper agreed with the reason.
Pelatihan Pembuatan Sabun Cair Ramah Lingkungan Berbahan Buah Lerak dan Daun Waru Mahatmanti, Fransisca Widhi; Sutikno, Sutikno; Susanti, R; Dewi, Nuriana Rahmani; Adhi, Nino; Aji, Mahardika Prasetya
ABDIMASKU : JURNAL PENGABDIAN MASYARAKAT Vol 8, No 2 (2025): MEI 2025
Publisher : LPPM UNIVERSITAS DIAN NUSWANTORO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62411/ja.v8i2.2914

Abstract

Salah satu permasalahan lingkungan yang dominan saat ini adalah limbah deterjen dari kegiatan pencucian. Kebanyakan deterjen konvensional menggunakan surfaktan  dalam bentuk fosfat, alkil benzena sulfonat, dietanolamin, alkil fenoksi.  Semua senyawa tersebut merupakan  senyawa yang berasal dari sumber daya tak terbarukan, beracun, dan berbahaya bagi lingkungan.  Bahan alternatif sumber surfaktan yang ramah lingkungan adalah biji lerak dan daun waru. Kandungan utama lerak adalah saponin yang berfungsi sebagai detergen. Daun waru dapat digunakan sebagai detergen alami, karena memiliki kandungan saponin, flavonoid, polifenol, dan tanin. Saponin pada daun waru dan biji lerak menghasilkan busa yang berfungsi sebagai bahan pencuci dan berperan sebagai surfaktan pada pembuatan detergen yang            ramah lingkungan. Tujuan kegiatan ini adalah melakukan edukasi dan memberdayaan masyarakat dengan membuat sabun cair ramah lingkungan, pengemasan serta pemasaran produk. Metode kegiatan yang akan dilakukan adalah sosialisasi, pembuatan sabun cair, memberikan ketrampilan dan mempraktekkan pembuatan sabun cair, pengemasan dan pemasaran. Para Ibu-ibu menunjukkan antusiasme yang tinggi dalam menerima materi yang disampaikan, terutama dalam pemahaman mengenai materi penyuluhan. Oleh karena itu pemakaian sabun lerak ini menjadi pilihan yang tepat bagi warga PKK RT 01 untuk beralih ke hidup ramah lingkaran dan lebih sehat karena pembuatan sabun ini sangat mudah dibuat sendiri, murah dan memiliki banyak manfaat.
Critical thinking in physics: Momentum critical thinking test for pre-service teacher Negoro, Ridho Adi; Rusilowati, Ani; Aji, Mahardika Prasetya; Jaafar, Rosly
Jurnal Ilmiah Pendidikan Fisika Al-Biruni Vol 9 No 1 (2020): Jurnal Ilmiah Pendidikan Fisika Al-Biruni
Publisher : Universitas Islam Negeri Raden Intan Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/jipfalbiruni.v9i1.4834

Abstract

The debate in the making of critical thinking evaluation tests among researchers and practitioners still exists. Problems come from definition and aspects segmentation which represents critical skills to be measured. According to the problems, the specific critical thinking instruments to physics content such as momentum are still hard to find. The instrument of critical thinking can support the learning evaluation to improve the critical power of Pre-Service. This study aims to develop the instrument of momentum critical thinking (MCT) test for Pre-service teachers. The MCT consisted of 8 questions representing 17 objective items. Based on the content validity test, it obtained a total percentage of 81.25% with the eligibility criteria. The reliability test demonstrated by the result of 28 pre-service teacher tests. The MCT instrument which tested was 17 objective items. The reliability test’s results showed Cronbach's alpha value of 0.716 with a high category. Research findings show that the CTM test can be used to measure the CT-specific domain of pre-service teachers in momentum, and relevant material for the consideration of university preparation for pre-service teacher learning in the 21st century
FABRIKASI DAN KARAKTERISASI WAVEGUIDE POLYMETHIL METHACRYLATE (PMMA) DENGAN CORE MATERIAL EXPANDED POLYSTYRENE (EPS) DAN UNSATURATED POLYESTER RESIN (UPR) Mufatihah, Nishfa; Yulianto, Agus; Aji, Mahardika Prasetya; Yulianti, Ian
Proceeding Seminar Nasional IPA 2025
Publisher : LPPM UNNES

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Telah dilakukan penelitian dengan karakterisasi dan fabrikasi waveguide berbasis polymethyl methacrylate (PMMA). Material inti yang digunakan adalah Expanded Polyestyre (EPS) dengan Unsaturated Polyester Resin (UPR) sebagai upaya meningkatkan keefisienan waktu dalam fabrikasi waveguide. Fabrikasi waveguide dilakukan dengan memahat PMMA berbentuk lurus dibagian tengah menggunakan computer numerical control (CNC), kemudian diisi material inti dan disambungkan dengan polymer optical fiber (POF) dan ditutup kembali menggunakan PMMA yang belum dipahat. Waveguide difabrikasi dengan variasi konsentrasi EPS dan UPR sebanyak enam variasi konsentrasi.. Karakterisasi dilakukan dengan cara melewatkan cahaya LED berwarna merah dengan panjang gelombang 660 nm ke dalam waveguide. Pengukuran tegangan keluaran pada waveguide dilakukan menggunakan detektor fotodioda yang disambungkan dengan multimeter. Untuk hasil karakterisasi, waveguide yang memiliki loss arus dan tegangan paling kecil adalah waveguide F dengan konsentrasi EPS dan UPR sebesar 70% dan 30%. Waveguide yang memiliki efisiensi dalam pembuatan adalah waveguide A dengan konsentrasi EPS dan UPR sebesar 20% dan 80%.
PENGGUNAAN SISTEM INFORMASI GEOGRAFIS (SIG) UNTUK MEMETAKAN DAERAH RAWAN LONGSOR DI KABUPATEN SUMEDANG Nugraha, Abdurrohman Khotim; Yulianto, Agus; Aji, Mahardika Prasetya
Proceeding Seminar Nasional IPA 2025
Publisher : LPPM UNNES

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Kabupaten Sumedang merupakan salah satu kabupaten di Jawa Barat dengan jumlah bencana longsor yang tinggi. Hal ini menjadi indikator perlunya pemetaan daerah rawan longsor sebagai bentuk mitigasi bencana. Tujuan penelitian ini adalah untuk memetakan daerah rawan longsor di Kabupaten Sumedang berdasarkan pedoman PVMBG 2015. Metode yang digunakan adalah metode weighted overlay. Data yang digunakan adalah data spasial dari 2 parameter utama pemicu longsor yaitu curah hujan dan kemiringan lereng. Berdasarkan penelitian yang telah dilakukan menunjukkan bahwa Kabupaten Sumedang memiliki curah hujan tahunan tinggi (2.000 – 3.000 mm) dan kemiringan lereng curam (30-50%). Hasil pemetaan didapatkan bahwa Kabupaten Sumedang memiliki tingkat kerawanan longsor rendah sampai sedang.
Evaluating ICT literacy: Physics ICT test based on Scratch Programming for high school students Rusilowati, Ani; Negoro, Ridho Adi; Subali, Bambang; Aji, Mahardika Prasetya
REID (Research and Evaluation in Education) Vol. 8 No. 2 (2022)
Publisher : Graduate School of Universitas Negeri Yogyakarta & Himpunan Evaluasi Pendidikan Indonesia (HEPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/reid.v8i2.49093

Abstract

The integration of various learning content is important in the education process to develop the multi-competences of graduates. This is a response to the Industrial Revolution 4.0. ICT helps graduates compete and master the competencies needed in various scientific fields, especially physics. Efforts to build ICT literacy in learning Physics must complete an evaluation tool containing comprehensive Physics content. The ICT literacy test instrument as an evaluation tool can be packaged with scratch programming activities to help uncover ICT literacy based on computational physics concepts. This study aims to develop an ICT literacy test instrument with physics content based on Scratch programming for middle-level students. This research is development research with a research stage adapted from the development stage by Borg and Gall, including (1) Potential and problem analysis; (2) Data collection; (3) Product design; (4) Design validation and design revision; (5) Product trial; (6) Analysis and reporting. The test subjects were 106 students. The Physics ICT questions were developed to consist of 20 questions. Based on the validity test, a total percentage of 85.33% is obtained with proper criteria. The reliability of the test is shown by the results of calculations with Alpha Cron of 0.716 high categories. Overall, the PICT test is feasible to be used as an ICT literacy test for Physics content.
Co-Authors - Sulhadi - Susanto Abdurrohman Khotim Nugraha Adhi, Nino Agus Yulianto Agus Yulianto Aisyah, Siti Ali Sunarso Andya Satya Purnomo Putro Andya Satya Purnomo Putro, Andya Satya Purnomo Ani Rusilowati Antika, Dian Ayu Arik Pujiyanti Astuti, Adina Widi Ati, Laras Atun, Cholis Aulia Litsa Ariffiyah Bambang Subali Budi Astuti Budi Naini Mindyarto, Budi Naini Budiyanto, Saraswati Putri D.R, Priyandika Desy Widaningrum Dewi, Nuriana Rahmani Didik Aryanto Dody Rahayu Prasetyo, Dody Rahayu DWI YULIANTI Eko Nugroho Yuliono, Eko Nugroho F Widhi Mahatmanti Fadhiila, Hayunita Niki Fauzi, Adi Ahmad Fauzi, Adi Ahmad Fitrianto, Taufik Nur Frilisa Dliyaul Haya Gelu, Afrianus Harnina Bintari, Siti Hidayah, Husnul Ian Yulianti, Ian Imtinan, Nisrina Jaafar, Rosly Junaedi Harmiansyah, Junaedi Lailatul Qodriyah, Nur Lasiani, Lasiani Martien Herna Susanti Masturi Masturi Mufatihah, Nishfa Muh. Afis Nur Said Muh. Afis Nur Said, Muh. Afis Nur Nita Rosita Nita Rosita Nita Rosita, Nita Noviana Noviana Nurul Apriani Susanti Nuzulina, Khoirun Pradita Ajeng Wiguna Pradita Ajeng Wiguna, Pradita Ajeng Prayogi, Devin Sidiq Prayogi, Devin Sidiq Putut Marwoto Ragil Meita Alfathy Rahmad Hafid Hidayatullah Rahmawan Wicaksono Rahmawan Wicaksono Ramadhani, Amanda Dhyan Purna Riameinda Br. Bangun Riameinda Br. Bangun, Riameinda Br. Ridho Adi Negoro Rini Kusumawardani, Rini Rosita, Nita Rosly Jaafar S Sulhadi Sari, Ane Armitha Permata Sarwi - Sarwi Sarwi Satria Bijaksana Siti Aisyah St. Budi Waluya Suciningtyas Suciningtyas, Suciningtyas Suciningtyas, Suciningtyas Suharto Linuwih Sulhadi - Sulhadi, Sulhadi Supriyadi - Supriyadi Supriyadi Susanto Susanto Susanto Susanto, Susanto Sutikno Sutikno Toto Sudiro Wati, Annisa Lidia Wati, Annisa Lidia Widaningrum, Desy Wiguna, Pradita Ajeng Yeni Rima Liana