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All Journal SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Jurnal Teori dan Aplikasi Fisika
Syafriadi Syafriadi
Universitas Lampung
Agriculture, Biological Sciences & Forestry Astronomy Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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Penerapan model inverted class sebagai upaya peningkatana kualitas pembelajaran matematika untuk mahasiswa baru di Jurusan Fisika Universitas Lampung Ayu Aprilia; Gurum Ahmad Pauzi; Amir Supriyanto; Ahmad Faruq Abdurrahman; Syafriadi Syafriadi; Pulung Karo-karo; Suprihatin Suprihatin; Posman Manurung
SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Vol 9, No 3 (2025): May
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jpmb.v9i3.30205

Abstract

Abstrak Matematika merupakan fondasi utama dalam penyelesaian berbagai masalah dalam bidang ilmu fisika. Namun, banyak mahasiswa mengalami kesulitan dalam mengusasai konsep-konsep dasar matematika sehingga menganggu prestasi akademik mahasiswa. Pengabdian ini bertujuan mengimplementasi metode inverted class untuk melihat bagaimana keberhasilannya dalam menyelesaikan permasalahan ini. Kegiatan pengabdian dilaksanakan pada minggu ke 3 dan 4 bulan Januari 2025. Kegiatan ini  dibagi menjadi menjadi tiga kegiatan yaitu persiapan kegiatan, pelaksanan kegiatan di kelas serta evaluasi keberhasilan dengan sasaran 55 mahasiswa baru Fisika Unila. Dalam masa persiapakan disusun modul interaktif, menarik dan modern. Lalu dilakukan test pemahaman awal konsep matematika dengan hasil 42,9%. Selanjutnya dilakukan 2 kali pembelajaran dengan inverted class. Pada tahap evaluasi diperoleh peningkatan pemahaman mahasiswa menjadi 60.5%. Dengan tambahan kesan positif terhadap pelaksanaan kegiatan dan modul yang diberikan. Pengabdian ini berhasil menunjukkan bahwa inverted class dapat menjadi solusi untuk mencarik pendekatan yang efektif dalam meningkatkan pemahaman konsep sekaligus melatih kemandirian belajar mahasiswa.  Kata kunci: fisika; inverted class ; mahasiswa baru; pemahaman matematika AbstractHowever, many students struggle to grasp basic mathematical concepts, which negatively impacts their academic performance. This community service program aims to implement the Inverted Class method to evaluate its effectiveness in addressing this issue. The program activities were carried out in 3th dan 4th weeks of January 2025. This program was divided into three stages: preparation, classroom implementation, and evaluation of its success, involving 55 first-year physics students at Universitas Lampung. During the preparation phase, an interactive, engaging, and modern module was developed. An initial test was conducted to assess students' understanding of basic mathematical concepts, yielding an average score of 42.9%. The implementation phase involved two Inverted Class learning sessions. In the evaluation phase, the students' understanding improved significantly, with an average score increase to 60.5%. Additionally, students provided positive feedback on the learning process and the module used. This program successfully demonstrated that the Inverted Class method can serve as an effective approach to improving conceptual understanding while fostering students' independent learning skills. Keywords: inverted class; first-year students; physics; mathematical understanding; independence
Analisis Kecelakaan Reaktor Transient Over Power (TOP) Reaktor SCWR (Supercritical Cooled Water Reactor) Abdullah Haris; Yanti Yulianti; Syafriadi Syafriadi
Jurnal Teori dan Aplikasi Fisika Vol. 6 No. 1 (2018): Jurnal Teori dan Aplikasi Fisika
Publisher : Department of Physics, Faculty of Mathematics and Natural Sciences, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtaf.v6i1.168

Abstract

Analisis Termal-hidrolik Reaktor Air Bertekanan (Pressurized Water Reactor) Menggunakan Metode LU Faktorisasi Dewi Efendi; Yanti Yulianti; Syafriadi Syafriadi
Jurnal Teori dan Aplikasi Fisika Vol. 6 No. 2 (2018): Jurnal Teori dan Aplikasi Fisika
Publisher : Department of Physics, Faculty of Mathematics and Natural Sciences, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtaf.v6i2.182

Abstract

PERHITUNGAN LAJU REAKSI NEUTRON MODEL PERANGKAT ANNULAR PADA JENIS REAKTOR SCWR (SUPERCRITICAL WATER REACTOR) BAHAN BAKAR THORIUM ismatul lisa; Yanti Yulianti; Syafriadi Syafriadi
Jurnal Teori dan Aplikasi Fisika Vol. 6 No. 2 (2018): Jurnal Teori dan Aplikasi Fisika
Publisher : Department of Physics, Faculty of Mathematics and Natural Sciences, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtaf.v6i2.184

Abstract

The calculation of fission reaction rate and capture reaction with and without filters have been done using the REACT of SRAC. The calculation of fission rate on fuel 1 and 2 were 5,39 x 10-2 reaction/cm3s with filter and 6,35 x 10-2 reaction/cm3s without filter, then of capture reaction rate with filter on fuel 1 and 2 were 2,91 x 10-2 reaction/cm3s, without filter on fuel 1 was 3,9 x 10-2reaction/cm3s and fuel 2 was 3,78 x 10-2 reaction/cm3s. The calculation of capture reaction on cladding with filter was higher than without filter was 2,15 x 10-3 reaction/cm3s, on moderator with filter was lower than without filter was 3,18 x 10-3 reaction/cm3s. The highest neutron spectrum with 1% enrichment of experiment 1 in thermal energy was 6,31 x 10-6 MeV-1 and in fast energy was 6,44 x 10-6 MeV-1, and decreased constantly. Meanwhile of experiment 2, neutron spectrum in thermal energy was 1,37 x 10-5 MeV-1 and in fast energy was 6,91 x 10-6 MeV-1, and decreased significantly from 1% to 2% enrichment then decreases constantly until 5% enrichment
Efektivitas Ekstrak Daun Pepaya (Carica papaya L.) sebagai Inhibitor pada Baja Karbon AISI 1020 dalam Medium Korosif NaCl 3% Repangga Yudi Aditama; Ediman Ginting Suka; Syafriadi Syafriadi
Jurnal Teori dan Aplikasi Fisika Vol. 7 No. 1 (2019): Jurnal Teori dan Aplikasi Fisika
Publisher : Department of Physics, Faculty of Mathematics and Natural Sciences, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtaf.v7i1.202

Abstract

Papaya leaf extract used as an inhibitor in carbon steel sample AISI 1020, was immersed in a 3% carboxy NaCl medium. By varying the immersion time of 4 days and 8 days, and also the concentration of inhibitor 0%, 3%, 5% and 7%. After the treatment of the sample obtained the slowest corrosion rate calculation results in AISI 1020 4.5 samples and the fastest in the AISI 1020 8.7 sample. The inhibitor used has the most efficient efficiency value in the AISI 1020 4.5 sample and the inefficient value in the AISI 1020 4.7 sample. The XRD characterization results show that the crystalline structure formed is BBC with pure Fe phase. The SEM characterization shows the surface morphology of the steel sample, visible in the sample without the addition of more inhibitors than the sample with the added inhibitor. In addition, cracks do not appear on the AISI 1020 4.5 sample. Characterization of EDS in the sample seen elements of Oxygen (O) and Clorin (Cl) which indicates that the sample has been corroded.
Pengaruh Variasi Konsentrasi Ekstrak Daun Alpukat (Persea americana M.) Sebagai Inhibitor Pada Baja Tahan Karat SS-304 Dalam Medium Korosif HCl 1M Windy Mustika Sari; Syafriadi Syafriadi; Ediman Ginting Suka
Jurnal Teori dan Aplikasi Fisika Vol. 7 No. 2 (2019): Jurnal Teori dan Aplikasi Fisika
Publisher : Department of Physics, Faculty of Mathematics and Natural Sciences, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtaf.v7i2.222

Abstract

Efektivitas Ekstrak Kulit Buah Maja Sebagai Inhibitor pada Baja Karbon Aisi 1020 dalam Medium Korosif Nacl 3% dengan Variasi Waktu Perendaman Ismi Nurhayati; Pulung Karo Karo; Syafriadi Syafriadi
Jurnal Teori dan Aplikasi Fisika Vol. 8 No. 2 (2020): Jurnal Teori dan Aplikasi Fisika
Publisher : Department of Physics, Faculty of Mathematics and Natural Sciences, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtaf.v8i2.253

Abstract

Research has been conducted on the effectiveness of maja fruit skin extract as an inhibitor of carbon steel AISI 1020 in a corrosive medium NaCl 3% with variations in immersion time. The samples carbon steel AISI 1020 were immersed in corrosive medium NaCl 3% without being given and given the inhibitor of maja skin extract with a concentration of 0.8% for 5, 15, 25, 35, and 45 days. Calculation of reduction in corrosion rate is carried out by the method of weight loss. The results showed that the addition of the maja fruit skin extract inhibitor was effective in reducing the corrosion rate of the sample with the greatest efficiency at 35 days immersion, which was equal to 72.35%. The results of XRD characterization show that the phase formed is pure Fe and Fe3O4 phase which is a corrosion product is immersed without inhibitor. The results of SEM characterization showed that the microstructure of the surface of the sample after immersion was there were cracks, holes, and lumps which indicated that the sample had been corroded. The results of EDS characterization show that in the soaked sample there were corrosion products in the form of FeO compounds whose magnitude increased every time immersion.
Pengujian Gugus Fungsi Silika Berbasis Sekam Padi Dengan Variasi Suhu & Konsentrasi Cetyltrimethylammonium Bromide Sebagai Bahan Baku Mesoporous Silica Leni Rumiyanti; Catur Destiana; Ria Oktaviani; Simon Sembiring; Syafriadi Syafriadi; Ni Luh Gede Ratna Juliasih
Jurnal Teori dan Aplikasi Fisika Vol. 9 No. 2 (2021): Jurnal Teori dan Aplikasi Fisika
Publisher : Department of Physics, Faculty of Mathematics and Natural Sciences, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtaf.v9i2.357

Abstract

Co-Authors Abdullah Haris Ahmad Faruq Abdurrahman Amir Supriyanto Ayu Aprilia Catur Destiana Dewi Efendi Ediman Ginting Suka Gurum Ahmad Pauzi ismatul lisa Ismi Nurhayati Leni Rumiyanti Ni Luh Gede Ratna Juliasih Posman Manurung Pulung Karo-Karo Repangga Yudi Aditama Ria Oktaviani Riandini Pratiwi Simon Sembiring suprihatin suprihatin Suprihatin Suprihatin Windy Mustika Sari Yanti Yulianti